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revision 1.8 by adcroft, Wed Jul 1 22:49:29 1998 UTC revision 1.1018 by jmc, Sun Aug 24 22:03:51 2008 UTC
# Line 1  Line 1 
1  $Header$  $Header$
2    $Name$
3    
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    o add option ALLOW_ADDFLUID and run-time selector "selectAddFluid"
8      to add mass source/sink of fluid in the interior (3-D generalisation
9      of oceanic real-fresh water flux).
10    o pkg/monitor: fix recip_dr argument in mon_advcflw2 call (-> advcfl_W_hf_max)
11    o vermix test experiment: switch from LINEAR EOS to MDJWF (not tested before)
12    o new pkg: down_slope
13      density-driven downsloping flow parameterisation (Tellus, 1999, 412-430).
14      - presently, modify T & S inland (dwnslp_calc_rho.F).
15        can be avoided if rho was stored in common bloc and used in calc_phi_hyd.
16      - implementation for ocean in P-coords not tested.
17      - add secondary test to global_ocean.90x40x15 (input.dwnslp) to check this pkg.
18    o move kSurfC,kSurfW & kSurfS from SURFACE.h to GRID.h (next to kLowC)
19      (to facilitate conversion of oceanic pkg to p-coordinate).
20    o change FIND_RHO to FIND_RHO_2D :
21      pass arguments tFld & sFld as local (tile) 2D-arrays ; +fix EOS_CHECK.
22    o new pkg: cheapaml
23    
24    checkpoint61b
25    o exch2:
26      change index bounds in rx2_cube exchanges (new S/R: EXCH2_GET_UV_BOUNDS)
27      - no longer depend on the order sequence (N,S,E,W).
28      - 3rd exchange no longer needed (tested with 24 tiles).
29      - same modif to hand-written adjoint S/R (global_ocean.cs32x15: zero diff)
30      - exch_UV_A-grid readily available (but not yet tested).
31      comment out 3rd exch call and remove copy of V to U at SE & NE face-corners
32      (both are no longer needed) in exch_uv: no effect in forward run; but
33       get truncation error differences with adjoint exch.
34    o exch2:
35     - change index-bounds storage (moved from target to local tile,
36       more intuitive this way) ; rename/remove some variables.
37     - change utils/exch2/matlab-topology-generator & code_mods accordingly.
38    
39    checkpoint61a
40    o exch2/matlab-topology-generator:
41      fix bug in index bounds for N-S internal exchange (hard to tell if this
42      had any effect on the solution).
43    o pkg/mnc: small fix in mnc_handle_err: make sure that length of msgbuf
44      is exceeded
45    o testreport: modify syntax of awk, so that it works also with
46      awk, and not only with nawk and gawk
47    
48    checkpoint61
49    o autodiff
50      Change default for TAF usage by removing argument '-nonew_arg'
51      This changes TAF subroutine argument list (ordering of active var.)
52      Omission of this flag leads to incompatibility w.r.t. TAMC
53      To restore TAMC-compatibility, need following modifs:
54      * use adoptfile tools/adjoint_options/adjoint_tamc_compatibility
55      * use CPP option #define AUTODIFF_TAMC_COMPATIBILITY
56      Tested TAF version is 1.9.22
57      N.B.: exch2 hand-written adjoint code currently not TAMC compatible
58    
59    checkpoint60
60    --->>> This is the last checkpoint for which generating the adjoint
61    --->>> is done via the TAMC-compatibility TAF-flag "-nonewarg"
62    --->>> by default.
63    --->>> Future checkpoints will ommit this flag by default.
64    o pkg/generic_advdiff, os7mp: simplify and avoid division by zero.
65    o pkg/grdchk: Add gradient check to etan0 perturbations.
66    o pkg/exf: read ice area from file (#ifdef ALLOW_ICE_AREAMASK).
67    o pkg/autodiff: more flexibility in zeroadj.
68      model/src: modifying do_oceanic_phys.F accordingly.
69    o pkg/ctrl: Bounds for (kapgm,kapredi,eddypsi) parameter estimation.
70    o model/src and pkg/gmredi: GMREDI_WITH_STABLE_ADJOINT CPP option
71      special setup of gmredi for which the adjoint is stable
72      enough for parameter optimization.
73    o bridging the gap between eddy stress and GM.
74      -> eddyTau is replaced with eddyPsi (eddyTau = f x rho0 x eddyPsi)
75          along with a change in CPP option (now ALLOW_EDDYPSI).
76      -> when using GM w/ GM_AdvForm:
77          The total eddy streamfunction (Psi = eddyPsi + K x Slope)
78          is applied either in the tracer Eq. or in momentum Eq.
79          depending on data.gmredi (intro. GM_InMomAsStress).
80      -> ALLOW_EDDYPSI_CONTROL for estimation purpose.
81      The key modifications are in model/src/taueddy_external_forcing.F
82      pkg/gmredi/gmredi_calc_*F pkg/gmredi/gmredi_*transport.F
83    
84    checkpoint59r
85    o new S/R (pkg/mdsio/mdsio_facef_read.F) reading of sNx+1 x sNy+1 array
86      from per-face file (take S/R READSYMTILE_RS out of ini_curvilinear_grid.F);
87      fix option to read coriolis(@ cell-corner) from files with CS-grid.
88    o pkg/mnc: add some attributes to standard 1D-coordinate variables
89    o pkg/diagnostics: enforce missing_value attribute for scalar variables at
90      mass points, when using mnc for output
91      - add runtime parameter (missing_value, missing_value_int) to override
92        default (which is the value of getcon('UNDEF'))
93    o pkg/mnc: prepare mnc for the actual use of missing values with the
94      diagnostics package: small fix in mnc_cw_readwrite.template and more
95      initialisation of never used fields
96      - replace mnc_common.h and mnc_id_header.h with corresponding upper case
97      versions
98    o pkg/thsice/thsice_ini_vars.F added default initial values so that
99      thermodynamics sea ice solver does not blow up when some initial fields
100      are missing.
101    o move from external_forcing_surf.F to ini_forcing.F
102      the p-coord. hack consisting in using pLoad to set phi0surf ;
103      update output of tutorial_global_oce_in_p (affected @ truncation level).
104    o Freshen up a bit hs94.1x64x5, notably:
105      remove rotationPeriod and tRef=5*0. (adjoint only), and add
106      exactConserv=.TRUE.
107    o pkg/generic_advdiff:
108      change option GAD_ALLOW_SOM_ADVECT to GAD_ALLOW_TS_SOM_ADV which only
109      applies to files where Temperature & Salinity 2nd Order moments are used.
110    o pkg/ptracers: add second-order moment advection schemes (80 and 81);
111      this uses a dynamically allocated internal state data structure
112      (#define PTRACERS_ALLOW_DYN_STATE in PTRACERS_OPTIONS.h)
113      and requires a fortran 90 compiler
114    
115    checkpoint59q
116    o pkg/mom_vecinv: Add energy & enstrophy conserving scheme (selectVortScheme=3)
117       (from Sadourny, described by Burridge & Haseler, ECMWF Rep.4, 1977)
118    o Refresh tutorial_global_oce_biogeo, notably:
119      - change bathymetry (put back seamounts in ACC, use hFacs)
120      - change EOS (POLY3 --> JMD95Z)
121      - use Bryan-Lewis vertical diffusivity
122      - use multidimensional advection
123      - remove old virtual virtual in dic pkg, now done through ptracer pkg
124      - change a couple of parameters in dic pkg
125    o pkg/ctrl: change formula in adctrl_bound.F and add a parameter to ctrl_map_ini_gen.F
126    o pkg/obcs: change default to OBCSfixTopo = .true.,
127      - set OBCSfixTopo=.false. in exp4/input/data.obcs to reproduce old result
128      - replace "debugMode" with "debugLevel .GE. debLevB"
129    o implementation of TAF directives for gchem,cfc,dic
130    o remove "exp5" (replaced by tutorial_deep_convection).
131    o pkg/obcs: add code to fix topography gradients normal to open boundaries;
132      this requires computing the index fields OB_Jn/Js/Ie/Iw in obcs_readparms;
133      the code can be turned on by setting OBCSfixTopo = .true. in data.obcs
134      --> changes results in exp4, seaice_obcs
135    o tutorial_deep_convection :
136      update the set-up and increase resolution and domain size ; start
137      from pseudo initial conditions = output at t=120mn in order to see
138      something happening when running testreport.
139    o pkg/seaice: add os7mp as an advection scheme
140                  add check for advection schemes
141                  add a flag for restoring T and S underneath sea ice
142    o pkg/my82: add netcdf-support and diagnostics
143    o thsice pkg:
144      - Now hsMax limits snow height by turning it into ice following
145        flooding scheme (and now conserving energy)
146      - Slight rewriting of the formula in thsice_calc_thick.F
147      - Parameter rhowi eliminated to be replaced by floodFac = (rhosw-rhoi)/rhos
148      --> changes results of global_ocean.cs32x15.icedyn and global_ocean.cs32x15.thsice
149    
150    checkpoint59p
151    o gchem / dic / cfc :
152      - add useDIC, useCFC , read from "data.gchem" (& hold in GCHEM.h);
153      - add new parameter files: "data.dic" & "data.cfc" ;
154      - various re-arrangement in initialisation & header file ;
155      - fix tutorial_global_oce_biogeo for multi-threaded test.
156    o pkg/dic: test for "pickup_dic" file when restarting ;
157      if no pickup-file, can restart with a re-initialised pH (same as it did
158      before) providing pickupStrictlyMatch is set to False.
159    o change argument list of S/R PTRACERS_WRITE_PICKUP & MYPACKAGE_WRITE_PICKUP
160      + fix call to S/R GGL90_WRITE_PICKUP & DIC_WRITE_PICKUP
161    o add a "warning" (to Error msg file) when an Active Tracer is not using AB-2
162      and staggerTimeStep is off (needed for stability of Internal-wave dynamics).
163    o move out of PARAMS.h & data the last pieces of old-ptracer code: tauTr1ClimRelax,
164     & lambdaTr1ClimRelax ; put those 2 params in PTRACERS_PARAMS.h & data.ptracers
165       (note: not clear to me what lambdaTr1ClimRelax is still used for ...)
166    o pkg/mom_vecinv: - new parameter "selectVortScheme" to select which
167       scheme to use for vorticty-term ;
168     - compute upwindVorticity=T case within mom_vi_u/v_coriolis_c4.F
169       (with default selectVortScheme, return to original discretisation)
170     - remove weird combination (e.g.: upwindVorticity & highOrderVorticity)
171    o pkg/seaice: add a line to the summary to indicate grid type (B/C)
172    o in mom_calc_visc, fix average value of viscAh_W & viscA4_W next to the
173      bottom ; only used with variable horizontal viscosity and non-hydrostatic.
174      also fix diagnostics VISCAHW & VISCA4W.
175    
176    checkpoint59o
177    o dome/code/obcs_calc.F: avoid division by zero (detected using gfortran).
178    o change the loop ordering in most gad_*_adv_x.F to improve vectorization:
179      move a few statemens out the main loop into separate loops
180    o pkg/shelfice:
181      - sort out freshwater flux; convert freshwater fluxes to mass fluxes
182        (kg/m^2/s), does not break tests, because in verification/isomip,
183        rhoConstFresh=rhoConst (by accident)
184      - rearrange computation of tLoc, sLoc, pLoc to make code more efficient
185      - move S/R find_rho_scalar, pkg/ecco/sw_ptmp.F, pkg/ecco/sw_adtg.F into
186        new file model/src/seawater.F, so that they are available for all pkgs.
187      - convert potential temperature into in-situ temperature. This changes the
188        isomip tests => update tests
189    o add a flag writePickupAtEnd (default=true) to be able to suppress
190      writing a pickup at the last timestep
191    o tools/mpack-1.6 :
192      - disable automake (not working) and autoconf (not needed).
193      - update to version 1.6.4 which fix MD5 code on some 64 bits platforms
194        also cleaner with much less compilation warnings.
195    o pkg/profiles:
196      rename profiles_interp_mean_genericgrid as profiles_interp_mean_gg
197      (for "less than 32 characters name" compiler requirement)
198    o pkg/obcs and pkg/exf: added capability to specify seaice open boundary
199      conditions that have a different sampling frequency than S/T/U/V obcs
200    o pkg/diagnostics (stats-diags):
201      - fix global Min/Max in case 1 processor get only empty tiles
202    o genmake2: replace (4 times)
203         make genmake_tc_1.o >> genmake_warnings 2>&1
204      with
205         COMM="$CC $CFLAGS -c genmake_tc_1.c"
206         echo $COMM >> genmake_warnings
207         $COMM >> genmake_warnings 2>&1
208      to make genmake2 always see the value of CC as specified in the optfile.
209    o generic_advdiff: - prather advection scheme (SOM) coded for CS-grid.
210      - add diagnostics for 1srt & 2nd Order moments and sub-grid variance.
211      - modify verification advect_cs test to test SOM-advection on CS-grid.
212    o pkg/ctrl:
213      - Rewrite of ctrl_map_ini_ecco.F,
214        introducing a generic routine (ctrl_map_ini_gen.F).
215      - Modification of ctrl_bound/adctrl_bound handling control vector bounds.
216    
217    checkpoint59n
218    o pkg/diagnostics: for large number of diagnostics, store diagnostic mate
219      number in dedicate array "hdiag":
220      - new version of S/R DIAGNOSTICS_ADD2LIST : DIAGNOSTICS_ADDTOLIST
221        with 1 more argument (mate number); modify old version DIAGNOSTICS_ADD2LIST.
222      - many small changes (integer format) for large number of diagnostics
223      - start to use DIAGNOSTICS_ADDTOLIST (necessary for diagnostics with
224        a counter mate) in pkg diagnostics, ptracers, thsice & aim_v23.
225    o add parameter rotateGrid and Euler angles EulerPhi/Theta/Psi. For
226      usingSphericalGrid, this allows to define the rotated grid coordinates
227      via phiMin/thetaMin/dxSpacing/dySpacing, etc., but then re-compute the
228      geographical coordinates according to the inverse of the rotation defined
229      by the Euler angles, so that Coriolis parameter and online-interpolation by
230      exf works with the geographical coordinates on XC/YC/XG/YG.
231      Naturally, this feature does not work with all packages, so some
232      combinations are prohibited in config_summary (flt, flt_zonal, ecco,
233      profiles), because there the coordinates are assumed to be regular
234      spherical grid coordinates.
235    o pkg/gmredi,ctrl,ecco,autodiff,grdchk and model/src,inc:
236      - introduce isopycnal diffusion coefficient control.
237    o tools/adjoint_options:
238      - additional control vector components.
239    o pkg/mnc: have mnc create marginally meaning full coordinate variables
240      (that is the grid indices) if usingCurvilinearGrid and NOT EXCH2
241    o pkg/mypackage:
242      - add example of read/write pickup for state-var ;
243      - add entry points to the main code for state-vars diags & write-pickup.
244    o pkg/exf: rewrite of exf_getffieldrec.F to properly deal with year
245      transitions for useExfYearlyFields
246      - add new subroutine that determines the file to read from for
247        use*YearlyFields = .TRUE. and .FALSE.
248      - add a verification experiment to global_with_exf that tests
249        useExfYearlyFields with USE_EXF_INTERPOLATION defined
250    o pkg/obcs/exf: add useOBCSYearlyFields (=.FALSE.) to obcs with exf in
251      analogy to useExfYearlyFields; rearrange obcs_prescribe_read: two new
252      subroutines (which could be generated from a template, because they are
253      almost identical), for now they are included in obcs_prescribe_read.F for
254      simplicity
255    o pkg/exf:
256      - add a little more diagnostic to exf_interp_read (in analogy to
257        mds_read_field, can be turned off with debugLevel < debugLevA=1)
258      - improve vectorizability of exf_interp for TARGET_NEC_SX, makes code
259        ugly but fast by unrolling short inner loops, inserting a unroll=8
260        directive in routine lagran, and splitting a loop and making do while the
261        outermost loop (the latter requires the intoduction of index arrays)
262    o pkg/obcs: replace obcs_apply_area/heff/hsalt/hsnow with obcs_apply_seaice
263    o pkg/seaice: moved DIFFERENT_MULTIPLE from seaice_model to seaice_dynsolver
264      http://forge.csail.mit.edu/pipermail/mitgcm-devel/2008-January/003173.html
265    o verification/seaice_obcs: updated for restart test and latest options
266    o pkg/seaice: add a new flag SEAICEuseTEM to use a slightly different
267      ice rheology (so-called truncated ellipse, that gets rid of tensile stress);
268      for now this is only available for the C-grid code and also within
269      #ifdef SEAICE_ALLOW_TEM, because this option may slow down the EVP code
270    
271    checkpoint59m
272    o pkg/seaice: use different time constant for melting (SEAICE_gamma_t)
273      and freezing (SEAICE_gamma_t_frz) ice due to mixed layer temperature
274    o gad_som : fix flux output (& diagnostics) to have same units as other  
275      advection scheme fluxes (was previously multiplied by deltaT).  
276    o added verification/seaice_obcs both to test seaice open boundaries
277      and to provide an example matlab scrpt for generating them
278    o added verification/lab_sea/input.salt_plume for testing pkg/salt_plume
279    o pkg/salt_plume: clean up salt_plume_frac.F to
280      remove redundancy in PlumeMethod 1 and 4
281    o pkg/kpp: added saltplume diagnostics
282    o pkg/obcs and pkg/seaice:
283      - do not set uice and vice to zero when OB*icefile are unspecified
284      - OBCS_SEAICE_AVOID_CONVERGENCE is undefined by default
285      - moved seaice tracer obcs after call to seaice_growth
286    o pkg/salt_plume: added various options for salt plume depth
287      criterion and for vertical distribution of the salt
288    
289    checkpoint59l
290    o pkg/ptracers: new version of ptracers pickup:
291      read meta file and write only fields which are needed to restart.
292      ( same logic as main pickup file ; also using pickupStrictlyMatch )
293    o pkg/seaice:
294      - add timescale for melting due to warm mixed layer as a means of
295        setting SEAICE_availHeatFrac more conveniently
296      - add a CPP-flag/runtime parameter check for flooding algorithm
297      - reformulated availHeat in seaice_growth.F to be independent of AREA
298    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
299      unit changes
300    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
301    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
302      SX vector computer.
303    o pkg/seaice:
304      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
305        seaice forcing fields can now be read only through pkg/exf
306      - removed some unused halos
307    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
308    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
309      or U/VICE from U/VWIND before computing U/VSTRESS
310    
311    checkpoint59k
312    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
313      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
314    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
315      all experiments pass when compile with un-initialised var. checking option.
316    o added pkg/salt_plume
317    o script to test restart (for now, in MITgcm_contrib/jmc_script)
318    o pkg/seaice: new read/write pickup version.
319      read meta file and write only fields which are needed to restart.
320      ( same logic as main pickup file ; also using pickupStrictlyMatch )
321    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
322    o lab_sea.hb87: modify the domain & update output.hb87.txt :
323      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
324      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
325      process. Fixed here by closing the domain at the Northern boundary.
326    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
327    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
328      a set of consecutive levels in/from a 3-D array.
329    o pkg/ptracers:
330      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
331      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
332    
333    checkpoint59j
334    o in pkgs: dic, obcs, offline, rbcs:
335      standard way to compute coeff. for time interpolation between 2 time reccords
336      which retains full precision (& make results less dependent on compiler).
337      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
338    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
339      packages instead of reading ice cover and wind speed separately
340    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
341     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
342      to allow to compile customized code before the update)
343    o cleaning-up:
344      - fix CPP instruction syntax in pkg/obcs
345      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
346        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
347      - fix some threads issue in IO parts.
348    o pkg/dic:
349      - add tons of "_d 0" (--> much better testreports !)
350       and then update outputs of tutorial_global_oce_biogeo
351    o pkg/mom_fluxform:
352      add a special version of momentum advection intended to conserve momentum
353      next to a bathymetry step or a coastline edge. (default = off = #undef)
354    o new read/write pickup version:
355      - for now, only implemented for main (mdsio) pickup file.
356      - write out only what is needed to restart; merge pickup_nh , pickup_ph
357        and main pickup together.
358      - read meta file; read only what is needed to restart; stop if a field
359        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
360        if it make sense (even if the restart is not perfect).
361      - if no meta file, assume that pickup to read corresponds exactly to
362        a pickup that would currently be written.
363      - read pickup written in the old format (until checkpoint59i) if it
364        recognizes an old meta file (no field-list).
365      - add a meta file in exp. which starts from a pickup: 2 cases:
366        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
367         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
368        b) a meta file describing the content of the associated pickup file
369         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
370    o pkg/mdsio & pkg/rw:
371      - new routine to read a meta file ; new set of routine to read
372        Multiple-fields file (with meta file).
373    o added open boundary conditions capability for seaice
374        HSNOW, HSALT, UICE, and VICE
375    
376    checkpoint59i
377    o adjoint:
378      * fix multiDimAdvection adjoint
379        (partial recomputation problem by TAF for fVerT(:,:,kDown)
380        and comlev1 size definition (maxpass vs. max. number of tracers)
381      * verification/global_ocean.90x45x15 adjoint now tests
382        NLFS and multiDimAdvection using DST3 (=30)
383      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
384    o pkg/kpp: add "_d 0" to real constant (if missing);
385      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
386      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
387    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
388      for internal parameters related to restart process (formerly from PARAMS.h)
389      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
390    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
391      as argument. (only atm2d & obcs write_pickup have not yet been updated)
392    o pkg/monitor:
393      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
394      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
395      - account for deep Atmosphere factor and density factor (anelastic)
396    o added open boundary conditions capability for seaice HEFF and AREA
397    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
398      thermodynamics
399      - requires a little reorganization, which affects the testreport results
400        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
401        so that now the conservative form is tested
402      - add a few comments
403    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
404    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
405    o add new diagnostics to seaice: advective, diffusive fluxes (only for
406      multidim-advection, for scheme 2 they are not filled) and transports,
407      thermodynamic growth rates
408    o change units of EmPmR (inside the code, + within coupling interface)
409      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
410      Affects results @ truncation level (cg2d match) and update output of
411       experiments: lab_sea(6), global_ocean.90x40x15(10),
412      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
413      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
414      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
415      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
416    
417    checkpoint59h
418    o pkg/exf:
419      - improve vectorization by moving if-statement out of loops in
420        exf_mapfields, exf_radiation
421      - exf_bulkformulae.F: introduce 2D fields and vectorize code
422    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
423    o testreport:
424      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
425        monitor & update offline_exf_seaice exp. output.
426      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
427    o pkg/seaice:
428      - bug fix in the evp solver: boundary conditions were affected be
429        masking of zMax/zMin (changes results)
430      - minor bug fix in boundary conditions in seaice_calc_strainrates
431        (changes results for no_slip)
432      - seaice_lsr.F: make interpolation of eta dependent on boundaries
433      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
434      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
435        stress formulation and no-slip boundary conditions
436    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
437      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
438    o pkg/seaice: a first HSALT time stepping equation has been checked in
439    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
440      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
441      without requiring DO-IF statements
442    o pkg/thsice:
443      use continuous power-law function for partition of energy between lateral
444      melting/freezing and thinning/thickening ; old code using step function
445      still available with #undef THSICE_FRACEN_POWERLAW
446      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
447    o testreport: change AD testing : check against results/output_adm.txt
448      using same scripts as for forward test.
449    
450    checkpoint59g
451    o adjoint testing: in preparation for changing testreport:
452      - output format: cost and grad written on separated lines
453      - ad output results in directory "results" (instead of "results_ad")
454    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
455    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
456    o pkg/ecco: allow user defined cost function contributions
457    o testreport:
458      Allow to choose (per experiment) the list of tested output variables
459       and the main variable (used to issue a pass/FAIL ) ;
460      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
461      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
462      Also modify printing of summary:
463       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
464       b) echo the list of tested variables in the individual summary.txt of
465          each experiment.
466    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
467      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
468      (but still depend on the tile decompostion of the domain).
469    o pkg/seaice: change a discretization detail to make the B-grid code
470      "more symmetric". This change is likely to remove all "ridges/leads" that
471      where quasi-aligned with the grid in B-grid solutions. It may also be
472      the solution to the stress coupling issues with the B-grid.
473    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
474      remove .cvsignore from input dir. (since testreport no longer run here).
475    o pkg/thsice:
476     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
477     - fix reshaping of sea-ice just after advection:
478       melt all the ice only if ice-volume is too small.
479     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
480       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
481     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
482    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
483      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
484    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
485      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
486      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
487      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
488      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
489      -> update output.txt
490    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
491     this affects truncation error: -> update output.txt of exp:
492      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
493      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
494    
495    checkpoint59f
496    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
497    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
498      a bounded range (in forward mode)
499    o pkg/ecco, ctrl, autodiff and mom_common:
500     internal parameter controls, completements of implementations
501    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
502    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
503      (not seem any difference in testing results).
504    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
505       at face corners.
506    o pkg/generic_advdiff:
507     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
508      loop range indices for computing vertical advection tendency
509      and do the calculation in the interior only (no overlap) ;
510      for now, only implemented for SOM advection (to save CPU time).
511     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
512    o exch2 adjoint
513      First set of changes:
514      - add exch2 hand-written adjoint templates
515      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
516        This will require cleanup in pkg/autodiff/*.F
517        (changed routines currently kept separate in verif. code/)
518      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
519        that used to hide exch2 or cubed-sphere specific code
520        (commented via 'cph-exch2')
521    o pkg/seaice
522      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
523    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
524       output of global_ocean.cs32x15.thsice .
525    
526    checkpoint59e
527    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
528      for B-grid vector (not yet tested) and C-grid vector (<- only used
529      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
530    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
531      (#ifdef ALLOW_SALT_PLUME)
532    o gather_2d/scatter_2d: removed halo regions
533    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
534      scheme and the corresponding test case (under front_relax dir). For now,
535      only available with Skew-flux form and not yet tested in realistic set-up.
536      adjoint: store directives updated, but gradient checks deteriorated,
537      so maybe GM/Redi adjoint is now broken.
538    o seaice adjoint
539      * add AREA, HEFF, HSNOW as control variable
540        (should not change lab_sea results)
541      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
542    o pkg/seaice:
543      * added computation of saltFlux in seaice_growth;
544        For time being, sea ice salinity is assumed constant
545        contribution of snow flooding to freshening of sea ice is neglected.
546        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
547        defaults to 0.0 in order to maintain backward compatibility.
548        Typical values for SEAICE_salinity are 4 to 10 g/kg.
549      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
550      * added SEAICE_availHeatFrac, which specifies fraction of surface level
551        heat content used to melt or grow ice
552      * commented out cap of HICE: it helps keep ice thinner
553      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
554      * applied OBCS T/S mask to HEFFM sea ice mask
555    
556    checkpoint59d
557    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
558     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
559     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
560    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
561     and change default value of parameter "GM_Small_Number";
562     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
563       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
564       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
565    o pkg/ecco: cost function when applying pkg/smooth to controls
566    o pkg/ctrl: add forcingPrecond run time parameter
567    o pkg/seaice:
568     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
569     - fix bug in metric terms of u-equation in LSR solver (implicit part),
570       changes verification/lab_sea
571     - rearrange implicit part of u-equation in LSR solver to make it easier to
572       read, understand, and debug. This causes changes at the truncation level.
573     - fix (serious) bug in the boundary conditions (sign error in the implicit
574       part) of the LSR solver. Changes all LSR results.
575     - fixed problem with HSNOW initialization to avoid thick snow when AREA
576       is initilized with small values - does not change lab_sea results.
577     - added HsnowFile initialization capability
578    o pkg/smooth: addition to model/src and pkg/ctrl so allow
579     initialization of pkg/smooth and application to control vector
580    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
581    o dependencies: pkg/profiles requires pkg/cal
582    o pkg/profiles:
583     - added option ALLOW_PROFILES_GENERICGRID
584         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
585         that interpolation information (grid points and coefficients) is provided
586         within the netcdf input files.
587         -> sample matlab scripts can be found in MITgcm_contrib/gael
588         that allow you to prepare netcdf input files.
589     - also modified: cleaner include statements, cleaner error print statements,
590       cleaner stops when error, and more tests of the netcdf input files consistency.
591    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
592    o pkg/seaice:
593     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
594       requires a new routine: seaice_diagnostics_fill.F
595     - make sure that seaice does not move if not forced (pressure replacement
596       method, Hibler and Ip, 1995), changes results
597     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
598     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
599       It is turned off by default (=-1.), because it changes the results.
600     - make it possible to read AREA from a file, too.
601    
602    checkpoint59c
603    o add S/R and diagnostics for oceanic mixed-layer depth
604    o move GMRedi call after all vertical mixing schemes (including KPP)
605    o pkg/thsice:
606     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
607      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
608    o pkg/obcs:
609     - bug fix for balance code
610    o pkg/seaice:
611      - allow values of SEAICE_elasticParm > 1
612      - add new parameter SEAICE_evpTauRelax as an alternative
613        to SEAICE_elasticParm
614      - make lsr boundary conditions free slip (by default), changes result
615      - add code for no slip boundary conditions for lsr
616      - set minimum of zeta to zero (and not 4e8) (changes results)
617      - add a cap on AREA after advecting AREA if seaice_growth is not called
618    o change calculation of Visbeck K:
619      - no longer depend on tapering scheme; instead, compute slope (limited
620        by GM_maxSlope). this is equivalent to what was comuted before with
621        clipping or linear tappering.
622      - fix vertical averaging (wrong by 1/2 level)
623      - leave the old version (but will not be maintained) within
624        #ifdef OLD_VISBECK_CALC / #endif
625      - update output of exp. ideal_2D_oce
626    o change error catch in calc_r_star to improve vectorization
627    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
628      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
629    o adjoint:
630      Re-organized adjoint checkpointing according to Matt Mazloff
631      (but with modifs/completions/cleanups)
632      Storing is now bundled into large arrays to optimized I/O
633      (and second step in cleanup of the_main_loop)
634    
635    checkpoint59b
636    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
637      - export/import (between ocean & coupler) fields needed for ocean DIC.
638    o pkg/seaice:
639      - get rid of three more exchanges seaice_calc_viscosities (required
640        different loop boundaries in seaice_lsr and seaice_ocean_stress)
641      - bug fix in seaice_ocean_stress (update of lab_sea required)
642      - reduce loop boundaries to necessary minimum also in seaice_evp
643      - go back to the old way of computing deltaC/Z as the adjoint likes that
644        better
645    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
646      passive tracer to an Age Tracer) + update output.txt
647    o pkg/exf:
648      - implement A-grid / C-grid selection for wind-stress input files.
649      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
650      for now, in exf_bulk_largeyeager04.F only :
651      - change implementation for case where windspeed + 2. components wind-stress
652        are read-in. AND use rhoConstFresh to convert evap.
653    o pkg/seaice:
654      - use correct EXCH_UV for wind-forcing (on A-grid).
655      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
656        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
657    o pkg/exf:
658      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
659      EXF_INTERPOLATION:
660      - merge global_with_exf/code version of exf_interp_read.F
661        to the main code ;
662      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
663        reading the file ; Important: This options needs to be defined to recover
664        previous code.
665        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
666      - no longer loose real*8 precision along the way when using exf_iprec=64.
667    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
668      - change discretisation of evp-solver in order to avoid another exchange
669        (changes lab_sea) and clean up a little
670      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
671        help the adjoint (this also changes the results slightly)
672      - add a few "_d 0" where they had been missing in seaice_evp.F
673      - cleaning up: remove unused seaice_calc_rhs.F
674    o pkg/exf: some cleaning-up:
675      - change various "constants" into runtime parameters
676      - cleaned-up Large&Yeager04 routine which should eventually
677        replace exf_bulkformulae.F (changed names of S/R and CPP)
678        and merged various ALLOW_ATM_WIND options
679     only used with thsice pkg (in thsice_get_exf.F):
680      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
681        which are used when useStabilityFct_overIce=TRUE (= the default)
682      - change default values of ice & snow emissivity and scale downward LW
683        by ice & snow emissivity.
684    o pkg/thsice:
685     fix few little problems, in thsice_calc_thickn.F:
686      - growth vertically (and not laterally) if iceFrac == iceMaskMax
687      - melt only laterally if hIce < hThinIce (as the comments say)
688      and in thsice_extend.F:
689      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
690      - start to form ice as soon as the minimum ice-volume is reachable.
691     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
692      and cpl_aim+ocn
693    o pkg/kpp
694     - move computation of surface related input fields to KPP into a new
695       subroutine kpp_forcing_surf.F
696     - remove wrong (within bi,bj loops) EXCH calls.
697     - little cleaning (add argument myThid in last position, cvs header ...)
698     - for now, fix conservation problem by exchanging KPPviscAz (may not
699       be the best fix)
700    o pkg/seaice
701     - check for inconsistent evp parameter/cpp-flag combination
702     - remove leftover errIO flat for obsolete name list error handling
703    o OpenAD
704     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
705    
706    checkpoint59a
707    o pkg/seaice: some parameter clarifications and a little bit of clean up
708    o pkg/thsice: rename run-time parameters:
709       himin       -> hIceMin
710       himin0      -> hThinIce
711       hihig       -> hThickIce
712       i0          -> i0swFrac
713       transCoef   -> bMeltCoef
714       frac_energy -> fracMelting
715      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
716       with default values (for now) that do not change the results.
717      remove old version of thsice vars advection in pkg/seaice.
718    o in FFIELDS.h:
719      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
720      - make pLoad & sIceLoad always available (but still only used if
721         ATMOSPHERIC_LOADING is #define).
722    o pkg/kpp: replaced _KPP_RL with _RL
723    o bug fixes for vertical diffusivity computations when both KPP and
724        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
725        are no longer updating the vertical diffusivity array
726        (passed as argument) but are (re-) setting those arrays.
727    o pkg/seaice: fix bug in evp solver, while doing that
728      - change (improve?) discretization of stress computations for both
729        cgrid-lsr and evp solver
730      - add a new routine to compute strain rates
731      - the above changes lab_sea results
732      - add no slip conditions for evp solver (off by default), lsr-version
733        may follow
734      - fix exchange for shear at Z-points (does not change lab_sea)
735      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
736        (to force the user to pick a time step since there is not "safe" way
737        of choosing it)
738      - add principal stress diagnostics
739      - rearrange fields for evp a little to avoid having to call a: too many
740        exchanges and b: exchanges for stress trensor components which we do
741        not have.
742      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
743        of evp, complete rewrite for lsr case (latter is does not yet work
744        in all cases)
745    o pkg/kpp: add code to have mixing in shelf ice caverns
746      - add myThid to all kpp routines (long overdue)
747    
748    checkpoint59
749    o pkg/exf:
750      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
751        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
752      - move exf header files from lower_case.h to UPPER_CASE.h ;
753        add missing cvs Header & Name
754      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
755      - add namelist param. selectStressGridPosition, exf_monFreq
756      - retire many _CLIM routines, and remove data.exf_clim
757        + params moved to data.exf
758        + climsst, climsss now handled by exf_set_gen, i.e.
759          climss?period=0 refers to constant field,
760          climss?period=-12 to monthly forcing
761      - split up namelists in data.exf
762    o pkg/seaice:
763      - remove seaice_exch and seaice_exch_uv
764      - remove superfluous exchange of theta
765      - add myThid to seaice_budget_ocean/ice
766      - add new interface for atmospheric wind forcing (C-grid only)
767        + new routine
768        + two new field (taux, tauy for stress over ice)
769        + removed one global field (DAIRN) for C-grid case only
770    o pkg/thsise
771      - 2nd set of modifs for thsice adjoint in conjunction with exf
772    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
773    
774    checkpoint58y_post
775    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
776      vertical diffusivity, similar to that in MOM4; turned on using
777      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
778      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
779    o Added capability for 3D specification of background vertical diffusion
780      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
781      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
782      "data" file that contains the 3D vertical diffusivity coefficients.
783    o ice dynamics (pkg/seaice) with thsice thermodynamics:
784      - add code within pkg thsice to advect & diffuse sea-ice fields
785      similar to (and will replace) what has been added in  seaice_advdiff.F,
786      but: - conserving Mass, Heat & Salt.
787           - better when using non-linear advection scheme (not yet fully tested)
788           - can also be used in atmospheric set-up (for now, only the diffusion).
789    
790    checkpoint58x_post
791    o IO option for global-file compact format:
792      - add options when generating topology (utils/exch2/matlab-topology-generator)
793      - add I/O capability (pkg/mdsio).
794      - adapt utils/matlab/rdmds.m to read this format.
795      for now long-line format not yet supported by pkg/mdsio (& exch2).
796    o shelfice: add a few diagnostics
797    
798    checkpoint58w_post
799    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
800      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
801      (and replace horiVertRatio in NH code).
802      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
803                         and tutorial_plume_on_slope (sensitive to truncation)
804    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
805      directly to drive seaice model (C-grid only)
806    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
807     - reintroduce computation of wind from stress,
808     - compute tau (in exf_bulkformulae.F) from windstress averaged to
809       mass points to avoid tau = 0
810     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
811    o rdmnc.m: make it work with "global" files created with gluemnc
812    o rdmnc.m : some improvements in dealing with singleton dimension
813      (tested on all testreport mnc output files).
814    o genmake2: disable pkg/profiles if netcdf test fails.
815    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
816    o move call to cal_readparms up to make calendar parameters/variable available
817      to all packages
818    
819    checkpoint58v_post
820    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
821      useDynP_inEos_Zc tested.
822    o pkg/exf: changes to properly interpolate/mask/scale initial fields
823    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
824      and portions thereof.  See read_cs.txt for description and examples.
825    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
826      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
827      following the great-circle arc between those 2 points.
828    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
829      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
830    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
831     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
832     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
833     - still needs work (not working with some options ; efficiency to improve)
834       and serious testing.
835     - use this scheme for temperature & salinity in 2 advection test exp.:
836       advect_xy & advect_xz, respectively.
837    
838    checkpoint58u_post
839    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
840    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
841    o testreport: add option "-skipdir" to skip some test.
842    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
843      momentum calculation.
844    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
845    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
846      remove checkpoint.F and the_correction_step.F (no longer used);
847      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
848    o add option (linFSConserveTr) to correct for tracer source/sink due to
849      Linear Free surface
850    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
851    o pkg/thsice: fix reading mnc-pickups
852    
853    checkpoint58t_post
854    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
855    o pkg/mdsio:
856     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
857       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
858       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
859     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
860     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
861       either MDS_READ_FIELD or MDS_WRITE_FIELD )
862     - new S/R (to replace MDSWRITEMETA), which allows to write more
863       informations (variable names, time ...) to meta files.
864     - modify rdmds.m to give back the meta file content.
865    o pkg/diagnostics: change vertical interpolation to be safer, and more
866       flexible (define p-levels to interpolate to in data.diagnostics);
867      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
868       diagnostic pointer.
869    o pkg/seaice: more cleaning up of seaice_growth, added many comments
870    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
871    o fix multi-category seaice:
872     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
873       SEAICE_MULTICATEGORY
874     - fix short wave heat flux
875    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
876       and allow to use EVP solver. Change forward lab_sea: test both EVP
877       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
878    o Initial check-in of lab_sea adjoint
879      (very similar to natl_box_adjoint/code_seaice)
880      * used C-grid and EVP solver
881      * used KPP, GM/Redi
882      * uses inAdExact=.TRUE.
883      * gradient checks fail for both ADM and TLM
884        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
885        f.d. gradients actually seem more problematic than ADM, TLM gradients;
886        issue is related to forward mismatch between g77 an ifort
887    o pkg/seaice: overhaul of thermodynamics
888     - growth.F and groatb.F are replaced by new routine seaice_growth.F
889     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
890     - move a few global fields out of SEAICE.h into seaice_growth.F and
891       make them 2D (FICE/QNETO/ ...)
892     - remove FO (it is the same as QNETO)
893     - introduce a few local fields to avoid modifying external fields such
894       as atemp, etc.
895    
896    checkpoint58s_post
897    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
898      changed exf_set_gen.F so that
899        genperiod=0 means input file is one time-constant field and
900        genperiod=-12 means input file contains 12 monthly means
901    o CG2D: use pre-computed solver main-diagonal (stored in common block);
902      this affects truncation error ; generate new output file for exp. which
903      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
904        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
905        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
906        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
907        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
908        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
909    o start implementation of deep-atmosphere and anelastic formulation
910    o verification: remove 2nd copy of input files and use script "prepare_run"
911      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
912    o mom_common/vecinv/fluxform: fix a few initialisation isssues
913    o profiles: fix for multithreaded case
914    
915    o diagnostics: rename few diags:
916      s/'PRESSURE'/'RCENTER '/g
917      s/'TICE    '/'oceFreez'/g
918      s/'TAUX    '/'oceTAUX '/g
919      s/'TAUY    '/'oceTAUY '/g
920      s/'SWFLUX  '/'oceQsw  '/g
921      s/DIFx/DFxE/g
922      s/DIFy/DFyE/g
923      and add few ocean-forcing diagnostics:
924      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
925    o modifications to pkg/seaice/growth.F and budget.F, which change results of
926      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
927      as actual snow thickness.  It now refers everywhere to effective snow
928      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
929    
930    checkpoint58r_post
931    o modifications to pkg/seaice/growth.F, which change results of
932      lab_sea experiment: fixes pertain to melting snow over open water, to
933      masking EVAP under sea ice, and to using the correct AREA variable for
934      computations of EVAP, PRECIP, HSNOW, and GHEFF
935    o add ability to read bathy, salt, and theta using MNC (off by def)
936    o add flooding algorithm and advection of HSNOW for pkg/seaice;
937      both are turned off by default and do no change any results
938    o seaice advection with pkg/thsice: a step toward the use of non-linear
939      advection scheme, but #ifdef or commented out for now (requires more EXCH).
940    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
941      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
942      in natl_box (affects results @ truncation level: update output.txt)
943    o multi-threading and IO:
944      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
945      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
946        (needed to work with SingleCpuIO): tested in all verif. exp.
947    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
948      affects the results (but none of the verification test uses this scheme).
949    o Adding some pkg/diagnostics capability to pkg/seaice
950      (will certainly be subject to changes)
951    o ctrl: adding new control variables:
952      lwflux, lwdown, evap, snowprecip, apressure, runoff
953    
954    checkpoint58q_post
955    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
956      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
957      high_res_cube configuration by 4% on Columbia.
958    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
959      add (in global_with_exf/code) a version of EXF_INTERP_READ without
960      dynamical allocation (seems to work in multi-threaded).
961    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
962      single CPU io) so that TAF does not have to see EESUPPORT.h
963    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
964    
965    checkpoint58p_post
966    o obcs: stop if obcs is used with useCDscheme = .true.
967    o shelfice:
968     - fix a sign error so that no slip at shelfice interface works
969     - remove stop for combination non-hydrostatic code and shelfice. That does
970       not mean, that the results are correct, but at least they are numerically
971       stable
972    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
973    o added adjoint exch routined for all exch*3d* routines
974      and updated flow directives
975    
976    checkpoint58o_post
977    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
978      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
979    o change controling S/R for writing pickup file (new S/R do_write_pickup)
980      and clean-up reading/writing of pickup files.
981    o fix local version of read/write pickup (NH part) in rotating_tank/code
982    o simplify EXCH interface:
983     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
984     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
985    o added the regrid package
986    o shelfice:
987     - add a simple boundary layer scheme to reduce noise
988     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
989    
990    checkpoint58n_post
991    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
992       local variable (not in common block).
993    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
994      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
995      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
996        to work with SingleCpuIO.
997    o add "_d 0" to real constant of pkg/cfc subroutines ;
998       update exp. cfc_exemple & tutorial_cfc_offline output files.
999    o multi-threading and IO:
1000      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
1001        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
1002      - barrier before and after reading.
1003      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
1004      - avoid using MDS_WRITELOCAL for LAND pkg output.
1005      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
1006        common-block variables ; Allows multi-threading with master-thread IO.
1007    o change default MAX_NO_THREADS from 32 to 4 ;
1008      and stop cleanly when MAX_NO_THREADS is too small.
1009    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
1010    
1011    checkpoint58m_post
1012    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
1013       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
1014    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
1015       keep global_ocean.90x40x15 (for AD testing) with former secondary test
1016       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
1017    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
1018        add MITgcm_tutorials (= code + all the tutorials)
1019    o ecco, option to compute cost for total ssh (mean+anom)
1020    o consistent with addition of ptracer and ssh in pkg/profiles
1021    o profiles: adding ptracer and ssh
1022    o testreport: change multi-test output-file name
1023      (from output.txt.{name} to output.{name}.txt)
1024    o profiles: now ok for mutli-tiles case
1025    o seaice: add 4 parameters for different advection schemes for area,
1026      (effective) seaice thickness, enthalphy, and snow height. Their default
1027      is the standard parameter SEAICEadvScheme
1028    o calc_gw:
1029     - add cosFacU in zonal viscous flux (harmonic.visc.).
1030     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
1031       of tutorial_plume_on_slope.
1032    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
1033    o calc_gw: true flux-form, account for horizontal grid spacing.
1034      update rotating_tank results, but not plume_on_slope (affected at
1035      truncation level, 11 digits).
1036    
1037    checkpoint58l_post
1038    o calc_gw:
1039     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
1040     - remove side-drag for now (need to fix it); update plume_on_slope results.
1041     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
1042    o commit code to make SST/SSS weights spatially variable
1043      (based on either variable in-situ or variable initial T/S weights)
1044    o pkg/ecco:
1045      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
1046        now based on horizontally varying weights wthetaLev, wsaltLev
1047      * cost_averagesflags now returns year indices in addition to day, month
1048      * sflux balance is performed on annual basis
1049        (sflxumm, sfluxmm2, bal_sfluxmm)
1050      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
1051        including separate counting and multipliers
1052    o pkg/rbcs
1053      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
1054    
1055    checkpoint58k_post
1056    o testreport:
1057     - always build in dir. "build" (if not there, mkdir build instead of building
1058       & running in input)
1059     - run in dir run (if it exists), in build otherwise.
1060     - call prepare_run (if input/prepare_run exists)
1061     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
1062    o pkg/exf modifications to interpolation and rotation routines for more
1063       reasonable treatment of North Pole singularity: for tracers North Pole
1064       value is set to northernmost zonal-mean value, for zonal velocity it is
1065       set to zero, and for meridional velocity it is set to northernmost value.
1066    o pkg/exf/exf_check_range.F
1067     - add tile index to diagnostics and move stop statement to the very
1068       end of the routine.
1069    o pkg/diagnostics: (diagnostics_main_init.F)
1070      define title of isomorphic variables according to the current config.
1071    o pkg/thsice with pkg/seaice dynamics:
1072    - fix domain of computation (interior only, required for exf) and do exchanges
1073    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
1074    o towards a standard way of dealing with multi-threading in MONITOR
1075      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
1076    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
1077       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
1078    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
1079    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
1080    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
1081       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
1082    o tracer advection:
1083     - clean-up and simplify calc_common_factors.F
1084     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
1085       advection subroutine (but still not used within DST advection S/R)
1086    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
1087    
1088    checkpoint58j_post
1089    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
1090      from file (collects calls previously in FORWARD_STEP)
1091    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
1092    o adjoint store dir. adjusted accordingly
1093    o genmake2
1094      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
1095    
1096    checkpoint58i_post
1097    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
1098      on wind stress (SEAICEstressFactor defaults to 1.)
1099    o Total number of Timers is finite (<=40): comment out 2 non-essential one
1100      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
1101    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
1102      on CS-grid: no longer loosing mass.
1103    o exf & curvilinear-grid: no longer modify longitude xC & xG.
1104    o pkg/ggl90: fix sloppy output and fix a bug
1105    o pkg/seaice: added SEAICEuseEVPpickup parameter
1106      - Set to false in order to start EVP solver with
1107        non-EVP pickup files when using SEAICEuseEVP
1108      - fix sign error in diffusion in seaice_calc_rhs
1109    
1110    checkpoint58h_post
1111    * Modifications for bottom topography control
1112      o replace hFacC by _hFacC at various places
1113      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
1114      o add non-self-adjoint cg2d_nsa
1115      o update autodiff support routines
1116      o re-initialise hfac after ctrl_depth_ini
1117      o works for 5x5 box, doesnt work for global_ocean.90x40x15
1118    * Adding verification for 5x5 box (4-layer) bottom topography control
1119    
1120    checkpoint58g_post
1121    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
1122       used for mean seasonal cycle, mean diurnal cycle); add an example
1123       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
1124    o pkg/ggl90:
1125      - add parameter (minimum surface kinetic energy)
1126      - fix bug (avoiding division by zero)
1127    o couple pkg/thsice to pkg/seaice:
1128      - modify advection in seaice to accomodate new scalar fields to be advected
1129      - only muliDimAdection scheme work with seaice/thsice
1130      - mapping of thsice-variables to seaice-variables, back and forth
1131      - does not break the verification experiments, but does not give the
1132        desired results either
1133    o pkg/seaice
1134      - make (default) second order advection a bit less confusing?
1135    
1136    checkpoint58f_post
1137    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
1138      to pkg/seaice):
1139      - new routines thsice_map_exf and thsice_get_exf provide the interface
1140      - add an additional formal parameter to thsice_solve4temp
1141    o pkg/exf:
1142      - add new fields wspeed, snowprecip (to be able to couple to thsice)
1143      - correct Stefan-Boltzmann constant
1144      - new parameter for longwave surface emittance
1145      - separate some stuff from exf_bulkformulae into new routines  
1146        exf_radiation, exf_wind
1147      - add new parameters and constants: longwave emissivity for ocean, ice
1148        and snow, evaporation parameters over ice
1149      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
1150        either wind from stress or stress from wind
1151    o pkg/thSIce:
1152    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
1153    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
1154       and THSICE_CALC_THICKN
1155    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
1156    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
1157      to make debugging easier.
1158    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
1159    o pkg/bulk_force:
1160      - clean-up comments and parameters ;
1161      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
1162    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
1163      generate new output for test-experiment: aim.5l_cs.thSI
1164    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
1165      testreport accordingly
1166    
1167    checkpoint58e_post
1168    o SEAICE_CGRID adjoint done
1169    o R_STAR adjoint implemented.
1170      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
1171      * need to sort out init. of h0facc, etc.
1172    o Make pkg/profile fully independent of ecco,cost, etc. stuff
1173      to be able to use it in pure forward.
1174    
1175    checkpoint58d_post
1176    o upgrade simple test-experiment to tutorial example:
1177     step.1: duplicate the experiment and (step.2) will remove the old copy.
1178      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
1179      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
1180      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
1181      tutorial_global_oce_biogeo    <- copy of dic_example
1182      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
1183      tutorial_plume_on_slope       <- copy of plume_on_slope
1184      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
1185      tutorial_global_oce_optim     <- empty for now (David ?)
1186      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
1187     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
1188    o correct a sign problem in cost_scat.F
1189    o obcs and ptracers: fix boundary conditions for advections schemes
1190      with larger stencil
1191    o thsice adjoint: start
1192    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
1193      completeness
1194    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
1195      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
1196    o ptracers adjoint:
1197      * avoid extensive recomputatations
1198      * fix missing re-init. of gptr (missed by TAF)
1199    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
1200      me to turn off the excessive output to STDOUT that this package produces
1201    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
1202      and add those terms in Vector-Invariant formulation.
1203    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
1204      if the control period (xx_hfluxperiod etc) is 0
1205    o in profiles pkg, clean routines and fix details
1206    o in ecco pkg, reading ssh data:
1207      fix problem in case the model does not start at iter0=0
1208    o fix mnc-pickup/restart for ptracers
1209    o new package prifiles:
1210      code to compute profile-based cost by Gael Forget
1211      (modifs in ecco, ctrl, autodiff)
1212    o Benign bug fix in initialization (spotted by M. Mazloff) of
1213      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
1214    
1215    checkpoint58c_post
1216    o adjoint: finish NLFS adjoint and provide reference output in
1217      verification/global_ocean.90x40x15/results_ad_nlfs
1218    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
1219      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
1220      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
1221      with SEAICE_CGRID defined.
1222    o move calendarDumps from "data" to "data.cal" and clean-up the code
1223      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
1224    o add useEXF & useCAL flags (for now, set in hard-coded way)
1225    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
1226      (were missing in NH mode, and wrong in quasihydrostatic mode).
1227      waiting for Chris updated version of calc_gw to add those CALLs.
1228    o fix bug in quasihydrostatic S/R ;
1229      add a test for this option: global_ocean.90x40x15.qshyd
1230    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
1231      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
1232    o add on/off flag useOffLine for package OFFLINE
1233    o seaice:
1234      - modify advection so that it works also on the C-grid
1235      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
1236        problem in multi-tile runs with C-grid
1237      - add flags for clipping ice velocities and/or masking solver forcing
1238      - fix drag (ocean on ice) formulation and a bug that caused noise in the
1239        C-grid solver
1240      - added a few comments to seaice_diffusion.F
1241      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
1242        are now exclusive)
1243      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
1244        required re-ordering the code a little:
1245       + make DAIRN global variable (defined in SEAICE)
1246       + move computation of the viscosities eta and zeta into a new separate
1247         routine (because I need to recompute them in seaice_ocean_stress.F)
1248    
1249    checkpoint58b_post
1250    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
1251      update output.txt of exp. aim.5l_cs.thSI
1252    o various mnc cleanups and improvements:
1253      + shrink lookup tables by factor of ~4
1254      + better error reporting when running out of lookup space
1255      + able to handle longer path/file names (up to 500 chars)
1256    o adjoint:
1257      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
1258      - TBD: "hidden" mom_vecinv recomp. in dynamics
1259    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
1260     (allow to differentiate between forcing components using new integer flags:
1261      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
1262     and add new flag to put Dissipation tendency out of Adams-Bashforth.
1263    o ecco
1264      - enable trend removal from SSH anomaly obs.
1265    o adjoint
1266      - a fix for PmEpR when #undef EXACT_CONSERV
1267      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
1268      - try to fix "hidden" recomp. in forward_step for NLFS
1269        (NLFS seems broken sometimes after I checked it in)
1270    o seaice:
1271     - add c-grid version of the dynamic solver:
1272       + three new routines that are the c-grid substitute lsr, dynsolver
1273         and ostres
1274       + put a few fields that were local to dynsolver into global common
1275         blocks, so that I can move the computation of stresses etc into
1276         seaice_lsr (saves coding but may break the adjoint).
1277     - replace more hardwired parameters by runtime parameters
1278     - add ice masks that mask the rhs of the implicit solvers where there
1279       is no ice (commented out in seaice_dynsolver, because i am not sure
1280       if this works properly), eventually this should replace the clipping
1281       of ice velocities in seaice_dynsolver to +/-40cm/s.
1282    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
1283      include it only where its needed
1284    o move balancing of fluxes before the call of external_forcing_surf
1285    o seaice:
1286      - correct units of turning angles (now they are really in degrees)
1287      - move computation of GWATX/Y out of main routine into dynsolver
1288      - initialize GWATX/Y in seaice_init
1289    o Apply mask on Fresh-Water flux (needed for SSH forcing).
1290      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
1291    o seaice: add runtime flags for turning angles (default to zero)
1292    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
1293      and trend from exf forcing and ctrl control adjustments
1294    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
1295      (since checkpoint57x_post)
1296    o change the default rotation period to 86164.s = the Earth rotation
1297    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
1298      and based on a reference stratification. Tested within hs94.cs-32x32x5.
1299    o seaice advection: add code for choosing between the default (2nd order
1300      central differences) and multiDim advection schemes provided by
1301      pkg/generic_advdiff
1302    o seaice:
1303      - removed all references to SEAICE_GRID.h fields from
1304        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
1305        (cubed-sphere configuration will change a little)
1306      - grid computations in seaice_init are obsolete now.
1307      - cleaned up code a little so that is easier to read (hopefully).
1308      - added new (better?) discretizations of default advection and diffusion
1309        (turn on with SEAICEuseFluxForm)
1310      - replace 1 in 3d global fields by kSurface in growth.F
1311      
1312    checkpoint58a_post
1313    o seaice:
1314      - bug fix in advect.F
1315    o shelfice:
1316      - separate shelfice load anomaly from pload (breaks with time
1317        dependent forcing), => introduce constant field shelficeLoadAnomaly.
1318        Its default is 0., but it may be computed more cleverly from (unknown)
1319        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
1320        done offline. A good approximation of the pressure load anomaly is
1321        necessary to avoid large initial adjustment processes underneath
1322        deep-reaching shelfice.
1323      - small fix in ISOMIP shelfice_thermodynamics
1324      - add more sophisticated thermodynamics of Hellmer (1989), this is
1325        now the default
1326      - give a few constants more intuitive names
1327    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
1328      if bulk formulae are used in long integration (especially EmPmR). Turn
1329      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
1330      if balancePrintMean, the imbalance that is substracted is printed to
1331      STDOUT.
1332    o fix bug (typo) in obcs_apply_eta.F
1333    o add a new package shelfice which enables us to model the circulation
1334      underneath shelf-ice with draughts of hundreds of meters.
1335     - works
1336     - to do: + include improved thermodynamics
1337              + check whether kSurfC (from model/inc/SURFACE.h) can be used
1338                instead of new field kTopC
1339              + can we use topoFile, Ro_surf and existing code in ini_depth.F
1340                instead of new field R_shelfIce and new code in ini_depth.F
1341                and ini_mask_etc.F?
1342              + adjust vertical mixing schemes?
1343    o seaice pkg:
1344     - add a cpp-flag to include a simple formula for a salinity dependent
1345       freezing point of sea water at the surface
1346     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
1347       meridional stresses are now different (and hopefully correct)
1348    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
1349       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
1350       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
1351    o pkg/diagnostics: add options and parameters for regional-statistics
1352       diagnostics ; define regions by reading a region-mask from a file
1353       (might add other options later)
1354    o pkg/bulk_force:
1355     - add option and parameters to use AIM surface-flux formulae.
1356     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
1357       others forcing fields (defined in PARM05, parameter file "data") are loaded
1358       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
1359     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
1360     - use the right EXCH call for uwind,vwind (to work on CS-grid).
1361     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
1362       and parameters (note: calcWindStress replaces .NOT.readwindstress).
1363     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
1364    
1365    checkpoint58
1366    o add "--embed-source" option to genmake2 which, when the supporting
1367      tools can be compiled (as determined by genmake2) will turn on the
1368      embed_files package which then embeds the entire MITgcm source code
1369      (*.[fFhc] + Makefile) used for the build within the executable
1370      - requested by CNH but off by default
1371      - adds a paltry <9MB to the mitgcmuv executable in most cases
1372      - only writes the output when useEMBEDSRC in eedata is true
1373    o clean up 3-dim. relaxation codes:
1374      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
1375      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
1376      * Thanks to Tom Haine for testing!
1377    
1378    checkpoint57z_post
1379    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
1380      affects output (@ truncation level) of exp. plume_on_slope ; updated.
1381    o fix the pickup behavior for obcs in combination with ptracers
1382    o fix a bug in ptracers_external_fields_load
1383    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
1384      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
1385    o transfered surface NH pressure to eta field (if exactConserv).
1386    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
1387         and update lab_sea output.txt file.
1388    o completing 3-dim. relaxation code: additional term
1389         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
1390      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
1391      * At compile time, in "EXF_OPTIONS.h" set
1392          #define  ALLOW_CLIMTEMP_RELAXATION
1393          #define  ALLOW_CLIMSALT_RELAXATION
1394      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
1395          tauThetaClimRelax3Dim = 15552000.0,
1396          tauSaltClimRelax3Dim  = 15552000.0,
1397      * 3 cases:
1398          1) Use a constant-in-time 3-dim. field
1399          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
1400          3) Real-time relax. to time-evolving prescribed field
1401    o Adding Laplacian-type smoothness constraint on
1402      initial and boundary (forcing) controls (ic, bc)
1403      * enable at compile-time via
1404        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
1405      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
1406      * Absolute scale somewhat unclear so far
1407      * no area weighting was included since no other cost term does so far
1408    
1409    checkpoint57y_post
1410    First step for a NLFS adjoint
1411    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
1412    o new init. routines for calc_r_star, calc_surf_dr
1413    o still need to deal with ini_masks_etc
1414    o testreport seemed happy
1415    checkpoint57y_pre
1416    
1417    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
1418    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
1419    o add new offset feature to offline pkg (plus minor cleanup)
1420    o cfc fixes for final year of integration
1421    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
1422      be in GCHEM_OPTIONS).
1423    
1424    checkpoint57x_post
1425    o fix testreport Pb in multiple test experiment.
1426    o cleanup our namelist syntax in verification:
1427      - make it more F95 standards compliant (some work still needed)
1428      - allows the vast majority of our tests to work with gfortran
1429    o Non-Hydrostatic:
1430     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
1431     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
1432    o Allow to apply AB on T,S rather than on AB(gT,gS):
1433     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
1434     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
1435       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
1436     - need a "clever" read_pickup to restart from the other AB formulation
1437    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
1438    o remove some unused variables (reduces number of compiler warnings)
1439    o adjoint
1440      * Disable useVariableViscosity for adjoint for time being
1441        (there are a number of extensive recomputations)
1442      * Initialize certain variables needed for adjoint
1443    
1444    checkpoint57w_post
1445    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
1446                 fix the singleCpuIO RS version of MDSWRITEFIELD
1447       and add a WARNING if using globalFiles=T with multi-processors.
1448    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
1449      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
1450    o tracer advection scheme:
1451      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
1452       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
1453       was not very convenient).
1454      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
1455       (further tests needed for the implicit DST & Flux-Limiter schemes).
1456    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
1457      and sRef for convenience, handy, when you want to initialize
1458      ptracers in a large domain with a constant non-zero value. Also,
1459      untangle ptracers_init.F a little.
1460    
1461    checkpoint57v_post
1462    o change dome exp. to use variable viscosity in side-drag terms.
1463    o remove all the files from the cfc_offline test since they are now
1464      incorporated into tutorial_cfc_offline which has been producing
1465      identical results for a few days of testing
1466    o add new parameter: sideDragFactor to enable half-slip-side BC
1467      and change side-drag S/R to use viscosity from mom_calc_visc
1468      (can switch back by setting sideDragFactor=0.); affects results at
1469      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
1470       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
1471    o vorticity & strain are now computed without masking, to account for
1472      no-slip-side BC in variable viscosity calculation ; mask is applied
1473      anyway later on, before computing advection/coriolis terms.
1474    o modify exp4 to test new obcs support for reading from external files
1475      and for passive tracers
1476    o fix behavior of ptracers_monitor when monitor output is written to a
1477      netcdf-file; still not independent of monitor.F (writes in the same
1478      file).
1479    o change default value of tRef (put a uniform, meaningful value for ocean
1480      & atmos) and initialize sRef (was missing, as Martin mentioned).
1481    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
1482      to be proportional to enstrophy dissipation length.  Thus,
1483       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
1484      This is now consistent with Smagorinsky and with the manual.
1485    
1486    checkpoint57u_post
1487    o OBCS and PTRACERS: add open boundary support for passive tracers
1488      - either use homogenous (pseudo) v.Neumann conditions or prescribe
1489        OB-values from file; this is not different from the way theta and salinity
1490        are treated
1491      - however, Orlanski-radiation conditions are not supported, and the model
1492        will stop if you use pTracers and Orlanski at the same time.
1493      - beefed up the rountine obcs_external_fields_load: now only those open
1494        boundary values are overwritten with values from files for which there
1495        are really files, otherwise the OB-fields remain untouched. This makes
1496        it possible to use different OBs at different ends of the domain (as
1497        with EXF)
1498    o reduce number of exch calls in shap_filt (s2).
1499    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
1500      truncation level) 4/5 MLAdjust test results (11&12 digits match).
1501    
1502    checkpoint57t_post
1503    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
1504    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
1505      same truncation, independent of the face number: affects affects several
1506      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
1507    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
1508      note that biharmonic viscosity + no-slip was not tested in any experiment.
1509    o fix bug in non-linear free-surf side-drag ; generate new output for
1510      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
1511    o make mnc honor the writeBinaryPrec flag for most kinds of output
1512    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
1513    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
1514      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
1515    o add brackets in multi-terms sum to get same truncation, independent of
1516      the face number (manage to get exactly same value of gU,gV at the cs-edge)
1517      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
1518    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
1519      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
1520      a maximum grid-scale Reynolds number.  Also, changes all length calculations
1521      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
1522      Suggested values of viscosity parameters found in mom_calc_visc.
1523      Many new viscosity diagnostics available.
1524    
1525    checkpoint57s_post
1526    o Add clearing-house for viscosity calculations, mom_calc_visc and
1527      correct numerous bugs in LeithD and Smagorinsky discretizations.  
1528      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
1529      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
1530      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
1531      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
1532      The Strain-Tension form is now called with useStrainTensonVisc=.true.
1533      ViscAhStrain and viscAhTension are now retired.
1534    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
1535    o In response to JMC's bug report, genmake2 now ignores any soft-links
1536      that it finds in the *current* directory when searching for files.
1537      Soft-links found in any other source directories will still work as
1538      they did before.
1539    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
1540      a C routine to unlimit the stack size
1541    o mnc-ify pkg/aim snapshot vars
1542    o mnc-ify pkg/land as requested by Daniel
1543    o various changes to mnc including:
1544      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
1545      - output can now be grouped so that all files within a group
1546          change the ITER portion of their names in lock-step together
1547      - can now read ("global") PER-FACE (in addition to PER-TILE) files
1548          and works with both EXCH1 and EXCH2 (but needs more testing)
1549      - writing works for all verification test cases w/ g77 on Linux
1550    
1551    checkpoint57r_post
1552    o make MNC variable initialization happen earlier
1553    o add diagnostics for (almost) each term of the momentum Eq.
1554    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
1555    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
1556    o remove MINIMAL_TAVE_OUTPUT option ;
1557      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
1558    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
1559      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
1560    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
1561    o add time-dependent SST, SSS control
1562    o cost terms in ecco/ modularized (new cost_generic.F)
1563    o cost_averages routines are modularized (new cost_averagesgeneric.F)
1564    o new infrastructure for seaice model vs. obs misfits in seaice/
1565      * driver from the_main_loop.F is seaice_cost_driver.F
1566      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
1567      * gradient check in Exp. 6a of natl_box_adjoint/
1568    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
1569      (see README file)
1570    
1571    checkpoint57q_post
1572    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
1573    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
1574      - bug was reported by Jean-Michel and Ian Fenty
1575    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
1576      update exp. cpl_aim+ocn output.
1577    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
1578      Needed for high-res. runs with large global files
1579      to be able to limit tapelev size
1580    o Changed some tests for adjoint:
1581      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
1582      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
1583      * global_ocean.90x40x15/ back to default 3-level checkpointing
1584    o Modifications to enable scripted COMMON to MODULE conversion
1585      * verification/OpenAD/code/ has necessary scripts and description;
1586      * converts, compiles and runs successfully;
1587    
1588    checkpoint57p_post
1589    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
1590    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
1591      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
1592    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
1593    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
1594      (was already the case for dissipation with mom_vecinv,
1595       and also the case for grad.PhiHyd when staggered-timeStep)
1596      This will allow to put dissipation out-off the AB time-stepping.
1597     Unfortunately, affects truncation error. Update output of exp. that "fails"
1598      (cg2d matching number) and leave the others for later: front_relax(10),
1599      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
1600      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
1601    
1602    checkpoint57o_post
1603    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
1604      (2) its ready to be documented during the 20050801 DocFest
1605    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
1606      for ideal_2D_oce and lab_sea on linux_ia32_g77
1607    o set to #undef CTRL_SET_OLD_MAXCVARS_30
1608      in global1x1_tot/code_seaice_adj to access indices 32, 33
1609      (worth another tag)
1610    
1611    checkpoint57n_post
1612    o adding precip control xx_precip 32
1613    o adding swflux control xx_swflux 33
1614    o Replacing 10 forcing penalty cost routines by 1 generic.
1615    o Implementing partitioning in time-mean and variable adjustment
1616      for atmos. state.
1617    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
1618    o in natl_box_adjoint:
1619      * updated exp 1 to 10
1620        (but does not have time-mean vs. variable split results yet)
1621    o updated global1x1/*_seaice_adj/
1622      to incorporate latest changes
1623    o enable useSingleCpuIO for mdsio vector routines
1624      (applies in particular to tapelev I/O)
1625    o removed inefficient K-loop in all active_file*control*.F
1626    
1627    checkpoint57m_post
1628    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
1629      and advect_cs (use EXCH-2 and standard cs-32 grid files).
1630    o pkg/exch2: filling of face-corner halo regions is optional
1631      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
1632    
1633    checkpoint57l_post
1634     tag before updating tutorials (pre-release-2)
1635    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
1636       for output and interpolation of input fields onto model grid)
1637    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
1638       Affects results of exp. rotating_tank ; update output.txt.
1639    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
1640          and taking the square quantity and/or using a fraction-weight field.
1641    o fix aim_diagnostics_init.F mate numbers.
1642    o add mnc output capability to diagnostics/diagstat and update
1643      our cvsignore files for the ACSII output generated
1644    
1645    checkpoint57k_post
1646    o lab_sea now uses diagnostics package and provides a suite of
1647      new EXF diagnostics output.
1648    
1649    checkpoint57j_post
1650    o exf
1651      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
1652        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
1653        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
1654      * extended diagnostics output
1655        - now includes all EXF variables
1656        - hs, hl moved to common block
1657        - separate S/R for diagnostics, called after ctrl vector is added
1658        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
1659        - EXFqnet contains true Qnet (i.e. includes qsw)
1660      * updated verif. lab_sea, global_with_exf
1661      * Rearranging hflux (exf_mapfields -> exf_getforcing)
1662        to ensure that diagnostics sees a true EXFqnet
1663    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
1664    o diagnostics pkg: change pointers so that 1 diagnostic can be used
1665      several times with different frequencies.
1666    o mnc-ify the thsice package as requested by Daniel Enderton
1667      - the monitor--MNC output needs work
1668      - many attributes need to be added (most are currently blank)
1669    o mnc-ify theaim_v23 package as requested by Daniel Enderton
1670      - many attributes need to be added (most are currently blank)
1671    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
1672    o add Sadourny like discretization to the 4th.O vorticity advection scheme
1673    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
1674      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
1675         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
1676    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
1677     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
1678    
1679    checkpoint57i_post
1680    o Diagnostics package was changed: diagnostic allocation is now deactivated
1681      by setting an empty file name in the namelist (used to be by setting 0 frequency)
1682    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
1683      add 1rst Order upwind vertical Shear.
1684    o add a quick fix for A/B checkpointing in OFFLINE mode
1685    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
1686      end-run around the C/Fortran linking horror in eesup/src/timers.F
1687    o added pkg/runclock: allows user to terminate run based on wall clock
1688    o added non-hydrostatic scaling parameter: nh_am2
1689    o pkg/my82: futile attempt to make results compiler-independent by adding
1690      some "_d 0", etc. no effect.
1691    o for mnc output, fill the 'T' coordinate var with myTime and create a
1692      separate 'iter' variable for iteration count
1693    o pkg/diagnostics:
1694      add new capability: output of Global/Regional & per-level statistics ;
1695      tested against monitor output (including land & thSIce) on various exp.
1696    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
1697    
1698    checkpoint57h_done
1699      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
1700      data.diagnostics, data.gchem, data.ptracers) is done.
1701    
1702    o pkg/diagnostics: prepare for Global/Regional statistics.
1703      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
1704    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
1705      and rename it: DIFFERENT_MULTIPLE
1706    
1707    checkpoint57h_post
1708    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
1709    o pkg/diagnostics: change output frequency, now in seconds (instead
1710      of Nb of iterations). This requires to change data.diagnostics.
1711    checkpoint57h_pre
1712    
1713    o in mnc, let the user create the output dir if both mnc_outdir_date
1714      and mnc_outdir_num are false
1715    o add fflags() to pkg/diagnostics which allows one to specify, on a
1716      per-file basis, the file precision [default behavior is unchanged]
1717    o added diagnostics to pkg/kpp, including computation of mixed layer
1718      depth based on a temperature/density criterion
1719    o updated verification/natl_box to test the new pkg/kpp diagnostics
1720    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
1721    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
1722    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
1723      not mnc -- this mistake was found by JMC and is now corrected
1724    
1725    checkpoint57g_post
1726    o add Adams-Bashforth 3rd Order time stepping:
1727      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
1728      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
1729    checkpoint57g_pre
1730    
1731    o make lambda[Theta,Salt]ClimRelax spatially varying
1732      (default remains spatially uniform constant based on tau)
1733    o added new control variables
1734      * init. uVel, vVel, etanN
1735      * lambda[Theta,Salt]ClimRelax
1736    o separate masks used for ctrl_pack/unpack 'from write_grid' output
1737      (suggested by G. Forget)
1738    
1739    checkpoint57f_post
1740    o add parameter "baseTime" = model base time = time at iteration zero
1741      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
1742      account for baseTime shift
1743    o move Coriolis arrays from PARAMS.h to GRID.h
1744    checkpoint57f_pre
1745    
1746    o mnc-ifying the seaice package
1747    o introduced an alternative length scale calculation for use in the limiting
1748      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
1749    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
1750    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
1751      as well as grad(vort3).  Made it compatible with both approximate form
1752      for the cubed sphere and full form of these gradients.  Added flag
1753      useFullLeith to select between approximate and full form.  
1754    o add "d0" in getcon.F to reduce differences between compilers/platforms
1755      update output.txt of exp. fizhi-gridalt-hs
1756    o change port_rand funtion to allow to set the seed.
1757    o fix obscure MNC bug involving conversion between reals and integers
1758      - it caused no problems with certain (eg. gcc, ifc) compilers but the
1759        new version is now more standards-compliant
1760    o adjoint-related modifications
1761      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
1762      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
1763      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
1764    
1765    checkpoint57e_post
1766    o Adding eddy stress controls a la Ferreira et al.
1767    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
1768    
1769    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
1770      update output.txt of exp. fizhi-gridalt-hs
1771    o add more "Z" dimensions and associated coordinate vars to MNC
1772    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
1773    o parameter calendarDumps: when set, approximate months (30-31 days) and years
1774      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
1775      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
1776      months and years.  Requires pkg/cal.
1777    o diagnostics: add pickup functionality
1778      - off by default for backwards compatibility
1779      - current version only uses MDSIO -- MNC will be added
1780    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
1781    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
1782    
1783    checkpoint57d_post
1784    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
1785    o modify verification/ideal_2D_oce so that it tests the creation of mnc
1786      output from the diagnostics package
1787    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
1788    o make genmake2 more portable by using ".$FS" instead of ".f" for more
1789      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
1790    o add coordinate variables to the MNC output from the diagnostics package
1791    o change MNC-flags default value: true when useMNC=TRUE
1792    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
1793      the ability (off by default) to read the grid information using MNC
1794    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
1795    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
1796    o do snap-shot diagnostics at the middle of the time-interval (instead of
1797      at the end).
1798    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
1799      new test for AIM with thSIce + slab-ocean
1800    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
1801    o move state variable diagnostics to the beginning of the time step ;
1802      (note: still needs some work specially for snap-shot diagnostics)
1803      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
1804    
1805    checkpoint57c_post
1806    o Change testing option (-ieee) to get closer agreement between g77 & ifort
1807    o generate new output.txt files on faulks with g77 & the new -ieee option
1808    checkpoint57c_pre
1809    
1810    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
1811      update output.txt of exp. global_ocean.90x40x15
1812    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
1813      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
1814    o add saltFlux(+File) forcing capability with periodicExternalForcing
1815    o allow to use pkg diagnostics for GM-Redi & ThSIce output
1816    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
1817    o improvements for the MNC output from DIAGNOSTICS:
1818      - correct handling of the unlimitied dimension
1819      - all dims now have associated coordinate variables
1820      - variables located at U, V, and Corner ("Z") points are now written
1821        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
1822        *all* data points are output
1823    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
1824    o added pkg/seaice/seaice_monitor.F
1825    o mdsio_readfield.F can now read files visible only to master MPI process.
1826    o pkg/seaice: some test code for ice-modified ocean stress
1827    o exf_getffields interpolation defaults to bilinear for all scalar forcing
1828      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
1829      spurious negative numbers for precipitation and humidity.  Will cause
1830      some small numerical differences for integrations using pkg/exf/exf_interp.F.
1831    o pkg/ctrl/
1832      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
1833        May be enabled via doPackDiag
1834      *  introduce z-scaling of
1835         + gradient (doZscalePack) and
1836         + control (doZscaleUnpack)
1837    o pkg/mdsio/
1838      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
1839      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
1840    
1841    checkpoint57b_post
1842    o simplify options in diagnostics_fill arguments (remove weird combinations)
1843    o fix MNC coordinate variables so that they now contain per-face index
1844      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
1845      general, EXCH2 grids are only aligned to a "local" coordinate system
1846    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
1847    o Implement instantaneous output within pkg diagnostics:
1848      setting a negative frequency in data.diagnostics produces
1849     "snap-shot" output (as opposed to time-average if freq > 0)
1850    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
1851      NOTE: change ptracer diagnostics name: use 2 characters to work with
1852            more than 9 tracers. Add also diagnostics of advect & diffus flux.
1853    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
1854      becomes the coordinate variable for the 'T' dimension
1855    o add CF-style coordinate variables to MNC
1856      - just a first cut:  numbers are meaningless on the cubesphere and
1857        missing along the T axis but otherwise it works!
1858    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
1859    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
1860    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
1861      this is based directly on what the model compute, so that the content of
1862      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
1863    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
1864    o clean up build options files for SunOS, in particular
1865      - remove -traditional from xmakedepend
1866      - change -xarch=v9 to -xarch=native for f77
1867      - restore use of make (not gmake)
1868      - add CC=gcc if using g77
1869    o changes per discussion of AM, JMC, & EH3 today:
1870      - move redundant "grid" variables out of "state" -- in preparation of
1871        creating proper CF-style coordinate variables and in recognition
1872        that any/all grid variables can be easily copied (eg. w/NCO) from
1873        the grid files into any of the other NetCDF files
1874      - *always* output grid variables with MDSIO (this will eventually be
1875        changed)
1876      - output MNC grid file if useMNC is true
1877    o every instance of _END_MASTER() has been found and replaced with
1878      _END_MASTER( myThid ) in order to satisfy certain picky Sun
1879      preprocessors
1880    o re-arrange diagnostics pkg initialisation:
1881     - allow each package to extend the available diagnostics list
1882     - add some checking and fix small problems (multi-threaded, ...)
1883     - new S/R diagnostics_fill (replace fill_diagnostics):
1884       look through the short list of active diag. (instead of the long list)
1885       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
1886    
1887    checkpoint57a_post
1888    o this set of changes restores TAMC compatibility
1889      tested for global_ocean.90x40x15 adjoint on trough
1890      (what a pain)
1891    
1892    checkpoint57a_pre
1893    o some modifs in tools/build_options for sunos
1894    o call ctrl_pack for ctrl at end for optimcycle=0
1895    
1896    checkpoint57
1897    o add horizontal bi-harmonic viscosity for vertical velocity
1898      - new parameter viscA4W (defaults to viscA4)
1899      - affects only non-hydrostatic code
1900      - to be done: no-slip lateral boundary conditions
1901    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
1902    o implement Implicit Vertical advection for pTracers
1903    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
1904      (implemented also for implicit vertical diffusion & advection)
1905    o OBCS: extend application of tracer open boundary conditions
1906      to a strip beyond the boundary of width Olx/Oly
1907    o add call monitor to TAF set of required calls (flow directives)
1908      and include in natl_box_adjoint
1909    o untangle a few ifdefs related to cost, ctrl, autodiff
1910      untangel a few ALLOW_ECCO_OPTIMIZATION
1911    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
1912      (theta2, salt2 in ecco_cost_weights)
1913    
1914    checkpoint56c_post
1915    o OBCS as control variables
1916      - update ctrl_ad_diff.list, obcs_ad_diff.list
1917      - remove balance of obcs controls from default
1918      - fix index bug nobcs in ctrl_init
1919      - fix dummy fields filen in ctrl_pack
1920      - add dummy weights for obcs
1921    o lsopt: comment out fort.94 output
1922    o optim:
1923      - remove unnecessary header files
1924      - adjusted namelists
1925      - add xerbla.F to Makefile
1926    o exf:
1927      - multiple modifications of exf_check_range
1928      - unit change in exf_init_runoff from [m/year] to [m/s]
1929    o mdsio:
1930      - i/o-vector change debugLevel from debLevA to debLevB
1931    
1932    checkpoint56b_post
1933    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
1934      is called from DO_THE_MODEL_IO
1935      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
1936      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
1937      - clean up PTRACERS_WRITE_TIMEAVE a little
1938    o add another verification experiment that tests both the cfc-pkg and
1939      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
1940      reactive tendencies treated inline with regular timestepping
1941    o testreport previously did a lousy job of comparing small numbers, so
1942      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
1943      implemented in the little c-progam tmp_cmpnum.c which is embedded in
1944      testreport.
1945    o ptracers_monitor: bug fix for MPI
1946    
1947    checkpoint56a_post
1948    o GCHEM: finish reorganizating the package
1949      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
1950        (introduces another 3D-array for each passive tracer, but only if
1951        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
1952        gchemTendency is not needed because the timestep is done separately)
1953      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
1954      - GCHEM is now---more or less cleanly---separate from PTRACERS
1955      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
1956        so clear to me how that should be done in a general way.
1957    o CFC: improve formatting of output in CFC_ATMOS
1958    o PTRACERS:
1959      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
1960        that ALL experiments with ptracers enable can be checked. This makes
1961        GCHEM_MONITOR obsolete.
1962      - include a runtime parameter PTRACERS_monitorFreq that defaults to
1963        monitorFreq
1964      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
1965    o add PTRACERS (PTR0[1-5]) to testreport output
1966    o exf_check_range:
1967      * default changed to .TRUE.
1968      * will check values for niter0 if debLevA, every timestep if debLevB
1969      * STOP in exf_check_range if 'out of range'
1970      * range chosen generous to allow for potential extema
1971      TBD: a version with stricter range
1972           permitted range would be runtime parameters
1973    o GMredi:
1974      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
1975      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
1976      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
1977    o GCHEM:
1978      - move call to GCHEM_FORCING_SEP, so that it is now called before
1979        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
1980      - introduced a useGCHEM runtime flag and applied it everywhere.
1981      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
1982        this flag is now only visible within GCHEM-pkg routines.
1983      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
1984        be replaced by a 3D array that is computed before thermodynamics; for
1985        this, the tracer ID iTracer had to be included into the parameter list
1986        of ptracers_forcing
1987      - set up forward_step to call gchem_forcing, that will replace
1988        gchem_forcing_int in ptracers_forcing
1989      - cleaning up
1990    o small cleaning of exch2: remove files that are also in eesupp/src
1991    
1992    checkpoint56
1993    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
1994    o mnc: cleanup "full" files--fixes out-of-memory problem
1995    o ECCO-GODAE
1996      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
1997      * fully merged and updated from SIO code
1998        windstress sign change affects
1999        - exf_inscal_[u/v]stress
2000        - sign of xx_tau[u/v] adjustments
2001        - signs in cost_scat
2002      * ctrl_get_gen: avoid update of tau[u/v] for first few days
2003      * natl_box_adjoint updated and compressed
2004      * 2-level checkpoint switch added
2005        (tested in EXP. 1 of natl_box_adjoint)
2006      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
2007    o SVD
2008      * first complete, non-hacked version for SVD calculations
2009      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
2010        performed via direct access files admtlm_vector.it????
2011        (via ctrl_[un]pack)
2012      * optimcycle is used for ARPACK iteration counter
2013        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
2014      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
2015        and add linear transforms where necessary
2016      * controls are initial/final SST, SSS (can be extended; need to check
2017        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
2018    o mdsio: filename info to both stderr, stdout
2019    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
2020      from sign change
2021    
2022    checkpoint55j_post
2023    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
2024      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
2025    o add consistent build directories and .cvsignore files to verification
2026    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
2027    o make all subroutines 30 or less characters in length for certain older
2028      compilers to work (a thorough search only turns up two routines in
2029      pkg/ptracers)
2030    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
2031      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
2032    
2033    checkpoint55i_post
2034    o change arrays for total vertical diffusivity (2.D if explicit,
2035      3.D if implicit) ; each ptracer uses its own background value.
2036    o added mnc/NetCDF output capability to ocn_compon_interf
2037      - added bits to verification/cpl_aim+ocn so that it can run on
2038        ITRDA and other clusters without the mpirun "-wd" option
2039    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
2040      configuration
2041    o give MNC the ability to create additional files rather than
2042      exceeding a specified file size limit "MNC_MAX_FILESIZE"
2043      - the default is just less than 2GB which is a practical limit
2044        on many systems
2045    o Compute the non-local term using either KPP vertical diffusivity (=default)
2046       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
2047    
2048    checkpoint55h_post
2049    o add verification test "vermix"
2050    o remove all the *_ioinc flags and replace with the single global
2051      outputTypesInclusive flag
2052    o allow to set a vertical profile of vertical diffusivity for T & S
2053    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
2054    o useMNC moved from data.mnc to data.pkg
2055    
2056    checkpoint55g_post
2057    o Renaming carbon AD experiments to comply with testreport conventions
2058    o Updating adjoint of Held-Suarez hs94.1x64x5
2059    o Fixing directives for non-ECCO forward_step, after ECCO directives
2060      have been fixed to avoid recomp. of do_oceanic_phys
2061      Works well for global_ocean.90x40x15,
2062      but recomp. issue remains for carbon
2063    o Updating adjoint output for natl_box_adjoint after
2064      pkg/ecco has been modified (see taga c55d_post)
2065    
2066    checkpoint55f_post
2067    o rename to timeave_init_fixed
2068    
2069    checkpoint55e_post
2070    o some delicate re-shuffle of store directives to avoid one
2071      extra call of do_oceanic_physics
2072      affects ecco_the_main_loop.F, do_oceanic_physics.F
2073      checkpoint_lev1_directives.h
2074    o NB: this may break global_ocean adjoint temporarily,
2075      but it is clear how to fix it. Will do later, need this now.
2076    
2077    checkpoint55d_post
2078    o ECCO specific cost function terms (up-to-date with 1x1 runs)
2079    o ecco_cost_weights is modified to 1x1 runs
2080    o modifs to allow observations to be read in as
2081      single file or yearly files
2082    o enable to read exf forcing fields as either
2083      single file or yearly files (flag useExfYearlyFields)
2084    checkpoint55d_pre
2085    
2086    o switch between 2-level and 3-level checkpointing
2087    o add ability of MNC to write local and "partial" (eg. 2D slices where
2088      the full 3D field is never actually stored) arrays to NetCDF files
2089      with the correct (that is, the complete multi-dimensional) set of
2090      array indicies
2091      - used in mom_vecinv() to write the diagFreq output
2092      - tested (demonstrated) in verification/aim.5l_cs
2093    o further mnc-ification
2094      - add verification/lab_sea to the list with mnc setups
2095      - fix undefined mnc v-names in cd_code
2096      - add kpp to mnc output (both snapshot and timeave)
2097    o non-hydrostatic code
2098      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
2099        in calc_gw.F
2100      - defaults to viscAh
2101      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
2102        friction or Leith) in non-hydrostatic mode, as long as there is
2103        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
2104    o pkg/cost
2105      extend simple cost functions to treat time mean quantities
2106      (T,U,V) via cost_accumulate_state from cost_tile
2107    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
2108        be 2 times larger than the minimum size the advection scheme requires.
2109        now get a perfect conservation of salt in advect_cs test-exp (updated)
2110    o GGL90 (Gaspar's TKE mixed layer)
2111      - add horizontal diffusion of TKE, requires exchanges in
2112        do_fields_blocking_exchanges, horizontal diffusivity is zero by
2113        default. In OPA there is no horizontal diffusion of TKE but the
2114        mixing coefficients are computed from a horizontal average of TKE of
2115        6 points or so. I think that diffusion has a little more physical
2116        justification.
2117      - clean up ggl90_calc in the hope of reducing memory usage (this hope
2118        was in vain)
2119      - mask tke-variable in ggl90_init
2120    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
2121    o fix biharmonic diffusion on CS-grid.
2122    o more obcs stuff
2123      - added obcs_external_fields_load as an alternative to the EXF-pkg option
2124        for reading boundary values. This routine is called from
2125        obcs_prescribe_read
2126      - updated obcs_check
2127      - changed sponge layer relaxation parameter units for days to seconds
2128      - turned off sponge layer by default
2129      - changed argument list of OBCS_CALC to myTime+deltaTclock
2130      - fixed about 35 bugs in obcs_external_fields_load
2131    
2132    checkpoint55c_post
2133    o obcs stuff
2134      - new runtime flags useOBCSprescribe, useOBCSbalance
2135      - re-arranged obcs_calc
2136      - moved exf_getobcs to obcs_prescibe_read
2137        obcs_prescibe_read is called after ORLANSKI stuff
2138        and independent of it (executable can contain all).
2139      - updated obcs_check
2140      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
2141        These may be necessary only if tangential velocities are
2142        prescribed at OB, not sure, needs testing.
2143    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
2144      which simplifies the calls and passes the ifc check-bounds test
2145    
2146    checkpoint55b_post
2147    o add a 2D scalar, Z location, exchange_2 routine.
2148    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
2149      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
2150      affects advect_cs results (for the wrong reason): update output.txt
2151    o use a more standard discretization for biharmonic viscosity ;
2152     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
2153      affects results of dome set-up: update output.txt
2154    o fix gad_advection.F (CubedSphere part), back to version 1.23
2155    o fix bug in mom_vi_del2uv.F (CubedSphere part).
2156    
2157    checkpoint55a_post
2158    o merged code to
2159      * prescribe/read time-dependent open boundaries
2160        (works in conjunction with exf, cal)
2161      * sponge layer code for open boundaries
2162      * each boundary N/S/E/W now has its own CPP option
2163        (healthy for the adjoint)
2164    
2165    checkpoint55
2166    o up-to-date adjoint of previous breaks
2167      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
2168      - global_ocean_ebm: adjoint still needs fix (TLM ok)
2169      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
2170      - carbon: * remove tr1-related adjoint verification
2171                * add ptracer as control variable
2172    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
2173      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
2174    
2175    checkpoint54f_post
2176    o in verification/carbin/ remove experiment related to
2177      ALLOW_PASSIVE_TRACER (array tr1 etc)
2178      code_ad/ input_ad/ results_ad
2179    
2180    o add two new packages
2181      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
2182        + subject to optimization (memory)
2183      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
2184        + subject to reordering (many GOTOs in the original code)
2185        + so far opps is called for every (i,j) point, and then operates in
2186          the vertical; one may want to reorder the scheme in order operate in
2187          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
2188          fields)
2189    o overhaul of IO so that we now have flags for MDSIO and/or MNC
2190      - all verification tests compile and run with linux_ia32_g77
2191      - defaults are compatible with current input files--nothing
2192        should change if you were not previously using MNC
2193      - MNC output has been added in numerous places (eg. timeave)
2194        but there are still a few writes not yet do-able with MNC
2195        (this is in progress)
2196      - flags now allow for either/or/both use of MDSIO and MNC and
2197        documentation will soon follow
2198      - numerous small formatting cleanups for ProTeX
2199    o add version info (via BUILD_INFO.h) to MNC and stdout
2200    
2201    checkpoint54e_post
2202    o add two new packages
2203      - pp81 (Packanowski and Philander, 1981), Richardson number and
2204        stratification dependent mixing
2205      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
2206      - these scheme operate in a similar manner as KPP (without ghat, of
2207        course), however there is only one diffusivity that is used for both
2208        temperature and salinity (and passive tracers)ç
2209    o add offline package
2210    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
2211      provided by Stephanie Dutkiewicz
2212    o genmake2: add ability to search for C compilers and cleanup test output
2213      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
2214    
2215    checkpoint54d_post
2216    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
2217    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
2218      leading to additional shift by 5 days each year of integration
2219       (i.e. leading to considerable offset over the years)
2220    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
2221    o start with no AB and no initial filtering (staggerTimeStep):
2222      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
2223    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
2224      (external loading & cpl import/export stay in forward_step.F)
2225    o update coupling interface to work with new staggerTimeStep
2226    o change MDSIO ptracers_pickup.
2227    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
2228    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
2229    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
2230    
2231    checkpoint54c_post
2232    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
2233      this affects (truncation error) output.txt of test-exp:
2234       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
2235    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
2236    o change Qnet to always be the net heat flux, (+upward).
2237      affects (truncation error) output of natl_box exp.: updated
2238    o define the max number of passive tracers in PTRACERS_SIZE.h
2239    o start to test mnc routinely in exp0
2240    o add sea-ice loading (sIceLoad) as a new forcing field.
2241    
2242    checkpoint54b_post
2243    o add testreport "-j JOBS" option for parallel builds (tested and pretty
2244       impressive on Altix and Opteron systems)
2245    o diagnostics can now write NetCDF files through the mnc package
2246    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
2247    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
2248    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
2249      affects (truncation error) output of lab_sea & natl_box exp.: updated
2250    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
2251    
2252    checkpoint54a_post
2253    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
2254    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
2255    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
2256    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
2257      + internal_wave (shift in writing cg2d_ini_res)
2258    checkpoint54a_pre
2259    
2260    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
2261      - modified verification/lab_sea and natl_box_adjoint accordingly
2262    
2263    checkpoint54
2264    checkpoint53g_post
2265    o prepare splitting of thermodynamics: store convect.counter in common block
2266    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
2267      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
2268    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
2269    o new parameter "nShapS": allow to treat differently S from T (nShapT)
2270    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
2271    o restore adjointability
2272    
2273    checkpoint53f_post
2274    o modifications that affect AIM experiment results (update output.txt):
2275      - no advection of S at top interface Nr (pkg/generic_advdiff)
2276      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
2277    o AIM pkg:
2278      - include stability function into surf.Flux derivative relative to Tsurf
2279      - calculate clear-sky radiation & surface temp. change (for diagnostics)
2280    
2281    checkpoint53e_post
2282    o merged cylindrical coord configuration
2283    o added rotating_tank experiment
2284    checkpoint53e_pre
2285    
2286    checkpoint53d_post
2287    o faulks upgraded: re-generate output.txt that have changed:
2288       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
2289    o Added Bryan and Lewis, 1979, vertical diffusivity profile
2290    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
2291    o added Sadourny discretization of Coriolis
2292      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
2293      - re-enabled use of omega3 (useAbsVorticity)
2294    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
2295      vector-invariant equations
2296      - note: does *NOT* yet use same variable visc. for no-slip BC's.
2297    o recoded the lateral boundary conditions for non-hydrostatic w, this time
2298      hopefully without new bugs
2299      - still to do: biharmonic friction for non-hydrostatic w
2300    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
2301    o regenerated output for global_ocean_ebm (using -ieee)
2302    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
2303      of mom_common/
2304      - simple re-arrangement of instructions within computing loop
2305    checkpoint53d_pre
2306    
2307    checkpoint53c_post
2308    o new version of coupler for AIM+thSIce and Ocean models
2309     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
2310     - land: change Evaporation of snow
2311     - aim with thSIce: fix bug in snow-precip.
2312    o changes to calc_gw.F
2313     - bug fix for w^2 term near the bottom boundary
2314     - (hopefully) improve the lateral slip boundary condtions for use with
2315        partial/looped cells
2316      - because the bug fix changes two verification experiments anyway (exp5
2317        and plume on slope), change the lateral boundary condition from half slip
2318        to the value of no_slip_sides
2319    o ebm package wasnt quite up to the parallel task. Fixed that.
2320    o Adjoint of EBM package + verification
2321      * TLM OK
2322      * ADM not sufficient accuracy yet (needs further testing)
2323    
2324    checkpoint53b_post
2325    o Commiting new energy balance model to repository
2326      * package is pkg/ebm
2327      * verif. is verification/global_ocean_ebm
2328      * references are in ebm_driver.F
2329    C      * X. Wang, P. Stone and J. Marotzke, 1999:
2330    C        Global thermohaline circulation. Part I:
2331    C        Sensitivity to atmospheric moisture transport.
2332    C        J. Climate 12(1), 71-82
2333    C      * X. Wang, P. Stone and J. Marotzke, 1999:
2334    C        Global thermohaline circulation. Part II:
2335    C        Sensitivity with interactive transport.
2336    C        J. Climate 12(1), 83-91
2337    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
2338    C        Destabilization of the thermohaline circulation
2339    C        by atmospheric eddy transports.
2340    C        J. Climate 7(12), 1870-1882
2341    o Will need long integration testing.
2342    checkpoint53b_pre
2343    
2344    o created pkg/mom_common in preparation for variable viscosity code
2345    o renamed and split ini_mnc_io
2346    o pkg/land: only liquid water can diffuse or run-off
2347    o AIM using land: soil wetness availability account for snow
2348    o added printMapIncludesZeros to EEPARMS namelist
2349    
2350    checkpoint53a_post
2351    o restore TAMC compatiility for exf_constants.h
2352      (no usage of _d in .h)
2353    o Additional storing in KPP in an attempt to fix
2354      TAMC problem with adjoint of KPP code.
2355      (no success...)
2356      Identical code works fine with TAF.
2357    o Fixed verification/natl_box_adjoint experiments.
2358      Initial conditions for Experiments 4 and 5 are now
2359      set to "SEAICE_initialHEFF=0", which is more reasonable,
2360      and hence gives results closer to that of Experiment 2.
2361      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
2362    
2363    checkpoint53
2364    o stable checkpoint with up to date adjoint
2365      TLM tests only run for 1st grdchk at the moment. Its unclear if
2366      this is a code problem or a problem with resetting code for g_
2367      variables that is being autogenerated wrong.
2368      Otherwise:
2369       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
2370       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
2371         are both still in chaos following their security messes.
2372    
2373    checkpoint52n_post
2374    o various build (mostly genmake2) changes including:
2375      - ability to build/run more easily within Cygwin and MacOS X
2376      - more complicated Makefiles with a stronger dependence on Gnu Make
2377    o pkg/seaice modifications
2378      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
2379        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
2380        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
2381      - changed proxy for geostrophic velocity and updated
2382        verification/lab_sea/results/* accordingly
2383      - removed ADI dynamic solver from pkg/seaice
2384      - replaced all occurrences of 1/CSTICE or 1/CSUICE
2385        they caused a segmentation fault under certain circumstances
2386      - removed unused field WATR
2387    o bug fix in exf-package:
2388      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
2389         now reflect that.
2390    o small fixes in the cal-package:
2391      - set reference date to first of January for the 'model'-calendar
2392      - failing of cal_CheckDate in cal_FullDate now actually results in a
2393        warning
2394    o small modifications in exf-package to increase flexibility:
2395      - change climtempfreeze from a constant to a runtime parameter that
2396        is specified in data.exf_clim (default = -1.9)
2397      - introduce runtime parameter windstressmax (default = 2.0) that is
2398        specified in data.exf
2399    o fix in pkg/thsice:
2400      - update Evap (Tsf changes) to be consistent with Latent heat flux
2401      - maintain snow precipitation unchanged (even if Tsf >=0).
2402     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
2403    
2404    checkpoint52m_post
2405    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
2406      this does not change any of the results, because myIter=0 in swfrac always
2407      lead to jwtype=2 (the default anyway), but the call makes little sense
2408      as a default
2409    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
2410    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
2411      atmospheric model (AIM) to use it ; add a "slab ocean" component.
2412    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
2413    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
2414    o extending useSingleCpuIO option to work with new exch2 I/O format
2415      - old-style, missing-tile I/O is still accessible by defining CPP
2416        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
2417    o monitor package can write to NetCDF files and/or STDOUT
2418    o fix re-definition bug in MNC_GRID_INIT_ALL()
2419    o doc/api_reference added
2420      - a framework for building an API Reference Manual using all
2421        the "protex" comments embedded in the code
2422      - see pkg/generic_advdiff, pkg/mnc for examples
2423    o MNC:
2424      - make myThid the last argument for all subroutines
2425      - new default for the grid files: NO halos
2426      - add useMNC and other run-time flags
2427      - separate per-file-group handling of the unlimited dimension
2428      - early initialization of MNC w/ flags read at the eeboot stage
2429        and lookup tables set in initialize_fixed
2430      - write all MNC output to a freshly-created directory
2431    o thermodynamics sea-ice (thsice) is now tested with testreport.
2432    o test exp. advect_cs: use the standard cs32 grid ; update output.
2433    o Added functionality to grdchk:
2434      pick global i,j,k position (or nearest wet) where to perform check.
2435    
2436    checkpoint52l_post
2437    o new land formulation:
2438      a) use ground enthalpy as prognostic variable to ensure exact
2439         energy conservation.
2440      b) account for water temperature and for latent heat of freezing
2441         in all processes (rain, run-off, ground storage)
2442      c) compute surface and ground temperature implicitly.
2443    o aim_v23 modification for new land model:
2444      a) Treat separately land / ocean / sea-ice surface fluxes
2445         to allow implicit computation of land & sea-ice surface temp.
2446      b) add snow precipitation.
2447    checkpoint52l_pre
2448    
2449    o fix problem (when 1 tile is empty) in min/max monitor.
2450    o fix bug in timeAve (u,vZetatave in common block)
2451    o no restoring terms under ice for pkg/seaice
2452    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
2453    o bug fix for pkg/seaice pickups
2454    o change MNC call locations and add coordinate attributes
2455    o mask vorticity at the corner ; affects global_ocean.cs output
2456    o fix ini_curvilinear_grid ; test CS experiments with mpi
2457    o aim.5l_cs: modify sea-ice fraction input file ; update output
2458    o exf: Adding simple range check routine for exf fields after read
2459    
2460    checkpoint52k_post
2461    o removed top-level directory "diags"
2462      - we migrated these functions to pkg/timeave a long time ago
2463    o fixed bug introduced in pkg/monitor
2464    o accuracy ctrlprec = 32 insuffient for gradient checks using
2465      averaged fields (I/O via cost_averages)
2466      -> use ctrl.h in active_file*.F to control I/O precision.
2467    o paramter list of CALL ADTHE_MAIN_LOOP
2468    o added initial do_the_model_io to ecco
2469    o set all ...Freq to zero after cost_final
2470      taveFreq, dumpFreq, pChkptFreq
2471    o MAIN and ECCO differentiability restored
2472    
2473    checkpoint52j_post
2474    o fix nchklev in tamc.h for global_ocean...
2475    o Bringing flow and store directives up-to-date
2476    o Really weird thing!
2477      call do_the_model_io from the_main_loop with parameters
2478      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
2479      TAF places a faulty re-call of initialise_varia
2480      after cost_final call which should not be there!
2481    checkpoint52j_pre
2482    
2483    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
2484      error messages
2485    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
2486    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
2487      debug output
2488    o modfied mdsio_writefield.F to handle non-global files under exch2
2489    o update AIM Cubed-Sphere exp (aim.5l_cs):
2490      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
2491    o update AIM Equatorial Channel exp:
2492      use standard aim_v23 pkg and change the SST fields to be more realistic.
2493    o globalFile now works with exch2
2494    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
2495      mon_vort3.F to make exch2 friendly with >1 tile per cube face
2496    o limit timeave output for hi-res integrations
2497    
2498    checkpoint52i_post
2499    o removed CPP_EEOPTIONS.h from verification/*/code
2500    o updated the tiling for global_ocean_pressure
2501    checkpoint52i_pre
2502    
2503    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
2504      the old pkg/aim).
2505    
2506    checkpoint52h_pre
2507    o shortened offending lines in exch2_send_rx?.template
2508    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
2509    o genmake2: add build & execute test for NetCDF code
2510    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
2511      old grid files, moved CPP_EEMACROS.h to pkg/exch2
2512    o added useSingleCPUIO flag to monitor.F and mon_out.F
2513    o added temporary hack for sea-ice dynamics on the cube:
2514      metric terms are ignored and it is assumed that
2515      there is no sea-ice on cube faces 1, 2, 4, and 5.
2516    
2517    checkpoint52f_post
2518    o added exch2 cube routines to pkg/exch2
2519    o modified hs94.cs-32x32x5 to use it
2520    o added new grid files to hs94.cs-32x32x5
2521    checkpoint52f_pre
2522    
2523    checkpoint52e_post
2524    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
2525      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
2526    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
2527      to work with implicit vertical advection and AB ;
2528    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
2529    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
2530     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
2531    checkpoint52e_pre
2532    
2533    o fix bug in impldiff when Nr=1 or Nr=2.
2534    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
2535    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
2536    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
2537      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
2538    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
2539    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
2540    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
2541    
2542    checkpoint52d_post
2543    o re-tiled many expts to allow comparison in multi-processor mode
2544      - updated output accordingly
2545      - changed hs94.128x64x5 to use intial T from file rather than use the
2546        random number generator
2547    o add infrastructure in model routines for fizhi and gridalt packages
2548    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
2549    o changes to permit hi-res, cubed-sphere, configuration
2550      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
2551      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
2552      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
2553        of surface winds for the cube
2554      (A verification experiment, based on global_ocean.cs32x15, but with
2555       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
2556       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
2557       complete with example surface forcing files and matlab scripts to look
2558       at the output and compare it with that of global_ocean.cs32x15.)
2559    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
2560       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
2561       to conform to the common rule.
2562    o check-in the first version of the coupler + interfaces for multi-components
2563       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
2564       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
2565       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
2566       - ocean and atmos. share the same horizontal grid (no interpolation).
2567       - exchanges between component and coupler is done in forward_step
2568    o new verification experiment, cpl_aim+ocn:
2569       coupled ocean - AIM atmosphere on cs32 grid.
2570    
2571    checkpoint52d_pre
2572    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
2573    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
2574    
2575    checkpoint52c_post
2576    o Fixing OPTIONS files for use of exf:
2577      - ALLOW_ECCO not needed
2578      - ECCO_CPPOPTIONS.h should not be included from
2579        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
2580        as has been the case in the past
2581      - All cal/exf related options are currently set in
2582        single header file. Should remain so until we
2583        agree on a consistent new policy.
2584    o Removed all CPP options for cal package.
2585      cal has no more CPP options.
2586    o modified STOREs in GAD_ADVECTION
2587    o corrected key comp. for passkey
2588    
2589    checkpoint52b_post
2590    o new version: "thsice" of thermodynamic sea-ice pkg:
2591     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
2592     - modify fluxes but do not change theta directly;
2593     - light cleaning of bulk_force pkg (still needed with thsice).
2594     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
2595       + output_thsice.txt to test thsice & bulk_force pkgs.
2596    o put back grid & coriolis monitor output.
2597    checkpoint52b_pre
2598    
2599    o call "do_the_model_io" at the beginning (=> dump initial state)
2600    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
2601    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
2602      (need info on NUMBER_OF_PTRACERS)
2603    o missing PTRACERS headers in some routines
2604    o default tamc.h in pkg/autodiff supposed to crash
2605      to ensure proper customization
2606    
2607    checkpoint52a_post
2608    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
2609      - moved surfaceTendencyTice from pkg/seaice to main code
2610      - subroutine FREEZE_SURFACE now limits only surface temperature
2611        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
2612        => new output.txt for global_ocean.cs32x15 & global_with_exf
2613      - keep the old version of FREEZE for backward compatibility;
2614        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
2615      - corresponding modifs for TAF directives
2616    o added surface flux output variables to TIMEAVE_STATVARS
2617    o time-averaged output for pkg/ptracers
2618    o fix problem with ECCO-related divided adjoint
2619      snapshot file was missing some ad-variables,
2620      but no warning issued by TAF
2621    
2622    checkpoint52a_pre
2623    o some bug fixes for #undef REAL4_IS_SLOW
2624    
2625    checkpoint52 = ecco_c52_e35
2626    o after testing adjoints of checkpoint51u_post
2627    
2628    checkpoint51u_post
2629    o this is the post-merge tag of the ecco-branch
2630      (needs another clean checkout and re-testing)
2631    o various natl_box_adjoint configs and results
2632      but no input fields
2633    o obcs adjoint not yet merged!
2634    o adding ECCO global 1x1 and 2x2 degree configs
2635    o updated/extended some store directives for seaice
2636    o pkg/ecco now containes ecco-specific part of cost function
2637    o top level routines the_main_loop, forward_step
2638      supersede those in model/src/
2639      previous input data.cost now in data.ecco
2640      (new namelist ecco_cost_nml)
2641    o in ctrl/ cleaned some cross-dependencies and updated CPP options
2642    
2643    checkpoint51t_post
2644    o this is the pre-merge tag of the ecco-branch
2645    
2646    checkpoint51s_post
2647    o cleanup: removed various obsolete #define-s
2648    o pkg/grdchk
2649      - renamed 'ph-grd 3' to 'grad-res'
2650      - merged from ecco-branch
2651        (remaining bug fixes for obcs gradient checks)
2652      - additional high-precision output for testreport
2653        (grep for 'precision_grdchk_result')
2654    
2655    checkpoint51r_post
2656    o cleaned up or removed CPP_OPTIONS.h files
2657    o updated results for some of the tests to reflect the new
2658      optfiles (-ieee: -O0 instead of -O3)
2659    
2660    checkpoint51q_post
2661    o cd_code:
2662      - moved cd_scheme.F -> cd_code_scheme.F
2663      - separate read_checkpoint from cd_code_ini_vars.F
2664      - separated cd_code part from write_checkpoint
2665      - updated AD_SOURCE, generated .flow
2666      - added CD_CODE_VARS.h to the_main_loop
2667      - Moving cd_code specific store dir.s to pkg/cd_code
2668    o ctrl package totally restructured
2669      - pack/unpack now optional and decoupled from
2670        xx_/adxx_ I/O
2671      - ctrl_pack/unpack cleaned
2672        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
2673      - confined inclusion of AD_CONFIG.h to where necessary.
2674    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
2675    
2676    checkpoint51p_post
2677    o create initial cd_code package
2678      - WARNING: the initialization of fields within packages
2679        is broken because INI_FIELDS (where READ_CHECKPOINT is
2680        called) is called *before* PACKAGES_INIT_VARIABLES.
2681        This seems to be backwards since
2682        1) its important to initially zero the entire field including
2683           the "halo" region
2684        2) zeroing needs to be done *before* reading pickup info
2685           and the pickup call might or might not happen in any
2686           particular run
2687      - this needs an overhaul for R2
2688    o cleanup verification/*/code/GMREDI_OPTIONS.h
2689    o cleanup testreport
2690    
2691    checkpoint51o_post
2692    o bringing AD-related verif's up to date with genmake2
2693      - carbon/
2694      - global_ocean.90x40x15/
2695      - hs.94.1x64x5/
2696      - (front_relax/ )
2697    o (more) consistent directory structure for AD-related verif.'s
2698    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
2699    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
2700    o bug fix in find_alpha.F for MDJWF:
2701      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
2702        change rho -> rho-rhoConst
2703      - replace call find_rho to find_rhonum
2704    o initialisation of rFlx extended to full array (required by TAF)
2705      and shifted to thermodynamics
2706    o removed PTRACERS.h in ptracers routine
2707    o added surfacetendencyPtr to S/R parameter list pracers_forcing
2708    o Correcting initialisations for fVerU, fVerV.
2709    o helping TAF to recognize dependency on kUp for
2710      fVerU, fVerV
2711    o Replacing delZ by delR in pkg/ctrl/
2712    checkpoint51o_pre
2713    
2714    o undid all of cp51 pending some cleanups and discussion
2715    o added the [#include "AD_CONFIG.h"] statement to all files that need
2716       it for adjoint/tl #defines
2717     o re-worked the build logic in genmake2 to support AD_CONFIG.h
2718     o removed tools/genmake since it no longer works
2719    
2720    checkpoint51n_post
2721    o modifications to make FREEZE flux visible to pkg/kpp
2722      - moved surfaceTendencyTice from pkg/seaice to main code
2723      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
2724      - subroutine FREEZE now limits only surface temperature
2725        (this means new output.txt for global_ocean.90x40x15,
2726         global_ocean.cs32x15, and global_with_exf)
2727    o added surface flux output variables to TIMEAVE_STATVARS
2728    
2729    checkpoint51n_pre
2730    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
2731    o added [#include "AD_CONFIG.h"] to all files that use the following
2732      defines:
2733      - ALLOW_ADJOINT_RUN
2734      - ALLOW_TANGENTLINEAR_RUN
2735      - ALLOW_ECCO_OPTIMIZATION
2736    
2737    checkpoint51m_post
2738    o incorporating changes to get TAMC/TAF working in genmake2
2739      - added new TAMC/TAF targets to the Makefile
2740      - various cleanups related to package handling
2741      - these changes should have no impact on the forward model
2742    
2743    checkpoint51l_post
2744    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
2745     - faster algorithm for cal_addtime.F
2746     - higher precision arithmetic, where needed
2747     - pkg/exf *startdate variables changed from calendar date to
2748       model integration time
2749    
2750    checkpoint51l_pre
2751    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
2752    o enable to apply restoring on S & T only in a latitude band.
2753    o update output (external_forcing_surf modif. change truncation errors)
2754       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
2755    
2756    checkpoint51k_post
2757    o change default to: useNHMTerms=.FALSE.
2758     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
2759       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
2760     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
2761        exp1, ideal_2D_oce
2762     - change data file of oceanic exp (leave the results unchanged for now)
2763       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
2764    o set gravitySign automatically according to the vertical coordinate used
2765      (and change sign: back to "logical" value: +1 when R increases downward)
2766    o added an include barrier to the default CPP_OPTIONS.h and
2767      removed the #include "PACKAGES_CONFIG.h" from it
2768    o fix a bug in mom_fluxform (from chk51j_post)
2769    
2770    checkpoint51j_post
2771    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
2772    o adjusted some flow directives (dynamics, thermodynamics)
2773    o added cubed-sphere case to test cost function
2774    o heckpoint_lev?_directives.h now include
2775      pkg-specific directives, whenever those are enabled.
2776    o Moving pkg-specific flow directives to corresponding pkg
2777      Moving pkg-specific differentiation list to corresponding pkg
2778      Moving pkg-specific checkpoint-lev storing to corresponding pkg
2779      ---> conventions are
2780           - pkg_ad.flow
2781           - pkg_ad_diff.list
2782           - pkg_ad_check_lev?_dir.h
2783    
2784    checkpoint51i_post
2785    o merge of the branch-genmake2
2786      - knowingly breaks the older genmake
2787      - automatic generation of all ALLOW_${PKG_NAME} defines
2788      - new testreport supersedes older testscript
2789    o large number of package inclusion and header cleanups
2790    checkpoint51i_pre
2791    
2792    o new output for adjoin of global ocean vector invariant
2793    o fix for checkpoint of thermodynamic seaice and bulk_force
2794    o Steph gchem various cleanups
2795    
2796    checkpoint 51h_pre
2797    o fixed some single quotes
2798    o modify gchem pkg to be more versatile
2799    o modifications to clean up dic pkg
2800    o add pkg/cfc
2801    
2802    checkpoint51g_post
2803    o provide links for ARPACK and ADM*TLM
2804    o start removing verification/vero/
2805    o update AD-related stuff
2806      (in particular some IF-statements in model/src/ routines)
2807    o adding to verification/global_ocean.90x40x15/ adjoint of
2808      vector invariant setup
2809    
2810    checkpoint51f_post
2811    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
2812    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
2813      of tracer Green's fucntions for ocean inversion project.
2814    
2815    checkpoint51f_pre
2816    o Added on-the-fly spatial interpolation capability
2817        "USE_EXF_INTERPOLATION" to pkg/exf.
2818      - This is a temporary Cartesian-grid hack until
2819        the super-duper ESMF coupler becomes available.
2820      - See verification/global_with_exf/README for usage example.
2821      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
2822        flags and modified pkg/seaice accordingly.
2823    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
2824        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
2825        non-local transport term.
2826    
2827    checkpoint51e_post
2828    o pkg/mom_vecinv:
2829      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
2830      - add time-ave diagnostic of vorticity advection.
2831    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
2832    o atmospheric geopotential: - include water vapor effect;
2833                                - use p^kappa in p* scaling.
2834    o land pkg: read initial state from files.
2835    o AIM : add stratospheric drag in the upper level
2836    
2837    checkpoint51d_post
2838    o change function ILNBLNK (=> last non-blank char.) to return zero
2839      (instead of the string length) when the string. char is empty
2840    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
2841    o modif's to restore TAMC compatibility
2842      - avoid "_d" constructs in PARAMETER declarations
2843      - avoid interrupting lines by comment lines
2844    o Use cluster local disks for purely local I/O
2845      vs. globally visible disks needed for ctrl stuff
2846      (merged from ecco-branch)
2847      - new active_file_loc... and mdsio_..._loc routines
2848      - affected packages: autodiff, ctrl, grdchk, mdsio
2849    
2850    checkpoint51c_post
2851    o introducing integer flag debugLevel
2852      - debLevZero: suppress all output
2853      - debLevA: standard
2854      - debLevB: equivalent to current debugMode=.TRUE.
2855    o introducing pathname variable mdsioLocalDir for mdsio
2856      that can be specified at runtime
2857      (relevant for cluster I/O to local disk)
2858    `
2859    >>>checkpoint51b_post
2860    adjoint of ptracers
2861    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
2862    o extended state in checkpoint_lev?, etc.
2863    o alternative ctrl/cost with tr1 or ptracer
2864    o new comlev1_bibj_ptracers
2865    o new ptracers.flow
2866    o made ptracers_forcing same as external_forcing_s
2867    o added verification for adjoint with ptracers
2868      - adm. grdchk fail so far
2869      - tlm. grdchk OK
2870      - checked tapelev/comlev recomputations: OK
2871    <<<checkpoint51b_pre
2872    
2873    checkpoint51a_post
2874    o added code for biogeochemistry package
2875      - new pkgs: dic, gchem
2876      - new subroutine in ptracers
2877    o modify code for biogeo packages
2878      - in model/src and pkg/ptracers
2879    
2880    checkpoint51
2881    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
2882      - autodiff, ctrl, exf, grdchk, seaice
2883      kept separate packages
2884      - cost, ecco, obcs
2885    o updating verification/internal_wave, verification/lab_sea
2886      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
2887    
2888    checkpoint50i_post
2889    o Preparing next differentiable checkpoint and sync
2890      of MAIN vs. ecco-branch
2891      - 1st step: this one is differentiable
2892      - 2nd step: next(! not this) checkpoint will have updated packages
2893                  from ecco-branch)
2894    
2895    checkpoint50h_post
2896    o new package "land": provide surface BC for AIM.
2897    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
2898    o AIM: use true log-P extrapolation for near surface temp (= as in
2899        F.Molteni paper) ; update aim.5l_cs output.
2900    o New variable in PARM03 for more flexible pickups
2901    o somewhat cleaned package initialisation sequence for
2902      ctrl/ cost/ ecco/ in packages_... routines
2903    
2904    checkpoint50g_post
2905    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
2906      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
2907      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
2908        made the default because of faster convergence than ADI
2909    
2910    checkpoint50f_post
2911    o exf totally restructured
2912      - replaced all exf_set_ routines by one generic exf_set_gen.F
2913        and made sure it's still differentiable
2914      - split exf_getffields.F into new exf_bulkformulae.F
2915      - exf_inscal_/exf_outscal_ suffixes consistent with field names
2916      - updated adjoint/makefile and relevant verif. accordingly
2917    
2918    checkpoint50f_pre
2919     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
2920          + change Evap over land. (update aim.5l_cs output)
2921     o added missing .cvsignores and made uniform across expts
2922     o changed configuration of tidal_basin_2d expt
2923     o added pkg/debug functions for tracing code in fatal crashes
2924     o tidied pkg/monitor to use MONITOR_OPTIONS.h
2925     o new fn in pkg/monitor to stop model if solution grows too big
2926     o removed lots of single quotes from comments
2927    
2928    checkpoint50e_post
2929    o make KPP work with PTRACERS
2930     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
2931       nearly a copy of kpp_transport_s
2932     - there is no analogue to SurfaceTendencyS, so I have to use
2933       gPtr(of the surface layer) instead
2934    o add a new platform SunFire+mpi (SunFire 15000) to genmake
2935    checkpoint50e_pre
2936    
2937    checkpoint50d_post
2938    o change kpp output from multiple-record state files to single-record state
2939      files analogous to write_state.F
2940    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
2941      analogous to the cg2d-related output.
2942    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
2943      so that writing to internal file fn (with length 512) fails.
2944    checkpoint50d_pre
2945    
2946    checkpoint50c_post
2947    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
2948    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
2949    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
2950    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
2951    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
2952    
2953    checkpoint50c_pre
2954    Merging from release1_p13:
2955    o bug fix for pkg/seaice dynamic solver
2956    o Added SEAICE_initialHEFF to pkg/seaice
2957    
2958    checkpoint50b_post
2959    o store u*,v* in gU,V instead of in guNm1,gvNm1
2960    o in order to put the momForcing out of the Adams-Bashforth:
2961      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
2962      to timestep.F
2963    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
2964    o re-generate output for highly sensitive test-exp:
2965       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
2966    
2967    checkpoint50b_pre
2968    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
2969    o corrected CPP option mismatch in exf_Bulk... functions for case
2970      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
2971    
2972    checkpoint50a_post
2973    o Bug fix for merging between c50 and KPP.
2974      ikey was passed from thermodynamics to kpp_calc via
2975      common block rather than being recomputed in kpp_calc,
2976      in contradiction with new key itdkey.
2977      New key ikppkey created, and tamc.h headers updated.
2978    
2979    checkpoint50
2980    - 2nd step of merge with ecco-branch:
2981      merge changes in ecco-branch back into main trunk
2982    - bug fix in find_alpha
2983    - more storing in gmredi_calc_tensor.F, kpp_routines.F
2984    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
2985    - merged some sliced AD support routines
2986    
2987    checkpoint49
2988    merged from ecco-branch:
2989    o exf:
2990      - Enable initialisation of forcing fields to constant
2991        (runtime) values.
2992      - in exf_getffields.F
2993        Reduce i-/j-loop to interior domain, discarding overlaps.
2994        That also fixes wrong TAF-key computations for key_1, key_2
2995        with bulf formulae.
2996      - exf_init.F modify #ifdef for exf_init_evap
2997      - exf_getffieldrec.F, ctrl_getrec.F
2998        The following INT-usages are not safe:
2999          fldsecs  = int(fldsecs/fldperiod)*fldperiod
3000          fldcount = int(fldsecs/fldperiod) + 1
3001        and were modified.
3002    o autodiff: checkpoint_lev...
3003      - updated storing for bulk formulae (some arrays were missing)
3004      - added state for seaice package
3005      - synchronized with main branch
3006    o DIVA:
3007      Modif.s in
3008      - the_main_loop.F
3009      - the_model_main.F
3010      and added cost_final_restore.F cost_final_store.F
3011      o With these changes, it is possible to fully separate
3012        the first forward run to compute the cost function (mdthe_main_loop)
3013        and adjoint runs over individual DIVA intervals (adthe_main_loop)
3014        into separate model executions.
3015        This enables better tuning of DIVA to given queue sizes.
3016      o Loss of cost function value in consecutive DIVA runs is
3017        fixed by storing to 'costfinal' file.
3018      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
3019        beginning/end of adjoint integration is accounted for.
3020      The current changes apply to TAF-1.4.26.
3021      TAF has one remaining bug, requiring one manual change
3022      (see MITgcm manual).
3023    o cal: synchronized between MAIN and ecco-branch
3024    
3025    checkpoint48i_post
3026    o Changes to restore differentiability of code w.r.t. previous tag
3027      (mostly adding new routines to make list and replacing
3028      pressure by totPhiHyd).
3029    o Updated and merged grdchk package
3030      - has both ADM and TLM checks
3031      - works for single- and multi-proc.
3032      - output cleaned
3033      - worked successfully for parallel DIVA
3034    o genmake:
3035      - Adding -platform=SP4
3036      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
3037    o Modif. for DIVA:
3038      ctrl_unpack should not be called in intermediate DIVA interval.
3039      (similar thing would apply for active files such as
3040      tbar, sbar, psbar, which should not be reinitialised;
3041      only relevant for ecco-branch)
3042    
3043    checkpoint48h_post
3044    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
3045    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
3046    o Added SEAICE_initialHEFF to pkg/seaice
3047    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
3048    
3049    checkpoint48g_post
3050    --- EOS:
3051    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
3052      store total Potential in totPhyHyd for diagnostics & EOS.
3053    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
3054    --- Pressure/geopotential gradient:
3055    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
3056    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
3057      ( changes results of global_ocean_pressure )
3058    o NLFS + z-coord.: add eta*Rho' contribution.
3059    o accurate phiHyd when using interface-W at the middle between 2 centers
3060     ( changes results of ideal_2D_oce )
3061    o includes r* 2nd term in potential gradient.
3062    
3063    checkpoint48f_post
3064    Merging from release1_p12:
3065    o Modifications for using pkg/exf with pkg/seaice
3066      - improved description of the various forcing configurations
3067      - added basic radiation bulk formulae to pkg/exf
3068      - units/sign fix for evap computation in exf_getffields.F
3069      - updated verification/global_with_exf/results/output.txt
3070    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
3071      (SBO) core products, including oceanic mass, center-of-mass,
3072      angular, and bottom pressure (see pkg/sbo/README.sbo).
3073    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
3074      to avoid negative values in shallow regions.
3075      - updated verification/natl_box/results/output.txt
3076      - updated verification/lab_sea/results/output.txt
3077    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
3078    o Added useSingleCpuIO option (see PARAMS.h).
3079    o Updated useSingleCpuIO option in mdsio_writefield.F to
3080      work with multi-field files, e.g., for single-file pickup.
3081    o pkg/seaice:
3082      - bug fix in growth.F: QNET for no shortwave case
3083      - added HeffFile for specifying initial sea-ice thickness
3084      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
3085    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
3086      kpp_transport_t.F, forward_step.F, and the_main_loop.F
3087    o pkg/seaice:
3088      - adjoint-friendly modifications
3089      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
3090    
3091    checkpoint48e_post
3092    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
3093    o dynamics: change definition of computational domain & adapt mom_fluxform
3094      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
3095    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
3096        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
3097        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
3098        global_ocean.90x40x15 global_with_exf global_ocean_pressure
3099        inverted_barometer solid-body.cs-32x32x1
3100      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
3101    
3102    checkpoint48d_post
3103    o in preparation for r*:
3104     a) use pre-computed gradient of hydrostatic potential:
3105        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
3106     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
3107        => affects results of glob_oce_pressure (different truncation error)  
3108      update output.txt of ideal_2D_oce & global_ocean_pressure
3109    
3110    checkpoint48d_pre
3111    o in preparation for r*:
3112      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
3113      pass the 2 comp. of the grad. as arguments to momentum S/R.
3114      but for the moment, only used if it does not change the results.
3115    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
3116    
3117    checkpoint48c_post
3118    Modifications in treatment of initial flux forcing controls
3119    to avoid extra storing of flux fields.
3120    
3121    checkpoint48c_pre
3122    o Added tidal_basin_2d experiment (currently 1D!)
3123    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
3124    
3125    checkpoint48b_post
3126    o r* coordinate added in #ifdef NONLIN_FRSURF block.
3127     (modification to pressure gradient not yet implemented)
3128    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
3129      (for U & V) that are used for vertical advection of momentum.
3130    
3131    checkpoint48a_post
3132    o In preparation for r*, use temp. array to compute vertical transport
3133       in flux-form momentum pkg. => change results of few test-exp.
3134      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
3135                        lab_sea, natl_box & plume_on_slope
3136    
3137    checkpoint48
3138    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
3139    
3140    checkpoint47j_post
3141    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
3142    o moved adexch from forward_step to addummy_in_stepping
3143    o added exch in ctrl_map_...
3144    o aveFreq.=0. at end of cost_final to avoid overwrite in
3145      reverse checkpointing loop
3146    o Yet more changes in gmredi:
3147      * adgmredi_calc_tensor
3148        avoiding all recomputation of gmredi_slope_limit
3149      * adgmredi_x/y/rtransport
3150        added flag for excessive storing to avoid recomp. of
3151        u/v/rtans, dTdx/y/z
3152        -> this is not really necessary and very memory-consuming
3153      * adgmredi_slope_psi:
3154        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
3155      * gmredi_slope_limit
3156        re-activated full calculation of taperfct for case 'ac02'
3157    o updating verification/ adjoints of carbon, global_ocean.90x40x15
3158    
3159    checkpoint47i_post
3160    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
3161    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
3162      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
3163    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
3164    o gmredi: fix few bugs.
3165    
3166    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
3167    This will be a good checkpoint to plug into the ecco-branch.
3168    o few modif.'s to get latest version adjointed
3169      (mainly kick out code in ini_linear_phisurf)
3170    o modif's to run adjoint with exactConserv
3171    o case GM_BOLUS_ADVEC should be cleaned
3172      S/R gmredi_slope_psi should be cleaned
3173    o verification/carbon now has exactConserv=.TRUE.
3174    
3175    checkpoint47g_post
3176    o time-average AIM output: becomes independent from statvars time-average
3177      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
3178    o After TAF bug fix:
3179      Tested adjoint of gmredi package.
3180      Tests were done with checkpoint47 rather than with latest
3181      checkpoint47f_post since the latter is broken for the adjoint
3182      verification/carbon/ contains both ADM and TLM gradient checks.
3183    Here they are, before they get changed/lost/stolen.
3184    Mostly modif.'s to fix numerical sensitivities.
3185    Gradient checks OK for
3186    - GM_taper_scheme:
3187      * clipping
3188      * ac02
3189      * linear
3190      * glw91
3191      * dm95
3192      * ldd97
3193    - GMREDI_OPTIONS:
3194      * GM_VISBECK_VARIABLE_K
3195      * GM_NON_UNITY_DIAGONAL
3196      * GM_EXTRA_DIAGONAL
3197      * GM_BOLUS_ADVEC
3198    in conjunction with data.gmredi parameters to be checked in
3199    in a few minutes under verification/carbon/code/
3200    
3201    checkpoint47f_post
3202    Merging from release1_p10:
3203    o modifications for using pkg/exf with pkg/seaice
3204      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
3205        and SEAICE_EXTERNAL_FLUXES
3206      - pkg/exf CPP options EXF_READ_EVAP and
3207        EXF_NO_BULK_COMPUTATIONS
3208      - usage examples are Experiments 8 and 9 in
3209        verification/lab_sea/README
3210      - verification/lab_sea default experiment now uses
3211        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
3212    
3213    checkpoint47e_post
3214    o created a tag prior to creating a branch
3215    
3216    checkpoint47d_post
3217    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
3218      at the bottom boundary had an erroneous half slip boundary condition
3219    o added bottom drag and no slip boundary condition capabilities to
3220      oceanic pressure coordinates code
3221    o added new verification experiment global_ocean_pressure, this experiment is
3222      also described in the tutorial section of the manual
3223    checkpoint47d_pre
3224    
3225    checkpoint47c_post
3226    o Added a verification experiment for a global cubed-sphere ocean run
3227      -  verification/global_ocean.cubed32x32x30
3228      -  uses pkg/therm_seaice and pkg/bulk_forcing
3229    
3230    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
3231    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
3232      when using P-coordinate; only implemented for atmospheric config.
3233    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
3234      NOTES: requires option NONLIN_FRSURF to be "#define".
3235    o update advect_xz/results/output.txt (left from checkpoint44g_post)
3236    
3237    checkpoint47b_post
3238    Merging from release1_p9:
3239    o pkg/seaice
3240      - removed GOTO's and added taf directives
3241      - double precision constants to reduce the g77 (Linux)
3242        to F77 (SGI) differences reported in release1_p8
3243    o tools/genmake
3244      - added SGI options
3245    o verification/testscript
3246      - updated to that of checkpoint47a_post
3247    o verification/global_ocean.90x40x15/input/eedata
3248      - modified for SGI f77 compatibility
3249    o verification/lab_sea
3250      - added description of sea-ice model
3251      - added missing matlab routines
3252      - added test of thermodynamics parallelization
3253    
3254    checkpoint47a_post
3255    o new pkg: aim_v23
3256     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
3257       for now, keep the same surface forcing as before.
3258     - Part-Cell implemented into AIM; check that Heat & Water are conserved
3259     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
3260     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
3261    o add diagnostic of surface correction term in monitor output
3262    
3263    o bulk_force and therm_seaice
3264    - Two packages:  bulk_force (Bulk forcing)
3265      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
3266    - Earlier integration from Stephaine Dutkiewicz
3267      and Patrick Heimbach.
3268    - Two ifdef statements for compile time,
3269       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
3270    
3271    checkpoint47
3272    differentiable version of checkpoint46n_post
3273    o bug fix in quasihydrostaticterms
3274    o * "clean" adjoint code (in terms of extensive recomputations)
3275        can now be obtained for all GMREDI options (i.e. for
3276        - GM_VISBECK_VARIABLE_K
3277        - GM_NON_UNITY_DIAGONAL
3278        - GM_EXTRA_DIAGONAL
3279        - GM_BOLUS_ADVEC )
3280      * However, wrong gradient check problem remains unsolved.
3281      * New CPP options have been introduced for different
3282        tapering schemes
3283    o external_fields_load now part of differentiation list
3284    o pressure needs multiple storing;
3285      would be nice to have store_pressure at beginning or
3286      end of forward_step, e.g. by having phiHyd global (5-dim.)
3287      (NB: pressure is needed for certain cases in find_rho,
3288      which is also invoked through convective_adjustment).
3289    o recomputations in find_rho for cases
3290     'JMD95'/'UNESCO' or 'MDJWF' are OK.
3291    o #define ATMOSPHERIC_LOADING should be differentiable
3292    o ini_forcing shifted to begining of initialise_varia
3293    o Incorporating QNVS line search routines into MITgcm
3294      (this is separate code, and therefore not under pkg)
3295      lsopt/, optim/
3296    o Updated verification/carbon/
3297      - #define GM_VISBECK_VARIABLE_K
3298      - GM_taper_scheme    = 'ldd97'    
3299    
3300    checkpoint46n_post
3301    Merging from release1_p8:
3302    o verification/natl_box:
3303      updating new external_fields_load routine
3304    o New package: pkg/seaice
3305      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
3306      The sea-ice code is based on Hibler (1979-1980).
3307      Two sea-ice dynamic solvers, ADI and LSR, are included.
3308      In addition to computing prognostic sea-ice variables and diagnosing
3309      the forcing/external data fields that drive the ocean model,
3310      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
3311      The implied surface heat flux is then stored in variable
3312      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
3313      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
3314      non-local transport term.  Because this call precedes model
3315      thermodynamics, temperature under sea-ice may not be "exactly" at
3316      the freezing point by the time theta is dumped or time-averaged.
3317      N.B.: fairly large differences in accuracy occur across
3318            different platforms/compilers; comparison between
3319            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
3320            generated output gives:
3321       T           S           U           V
3322      C D M    c        m  s        m  s        m  s        m  s
3323      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
3324      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
3325      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
3326    
3327      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
3328    o GAD:
3329      - generated new common blocks to account for call of
3330        same gad routines with differing traceridentities
3331        (needed to modify tracerIdentity indices in GAD.h)
3332      - generated separate common blocks for case useCubedSphereExchange
3333        (Department of Futurology)
3334      - parameter lists to gmredi_?transport: added tracerIdentity
3335      - added new key indices to tamc.h
3336    o external_fields_load:
3337      - added this routine to TAF list
3338      - needed to make some common blocks global and additional storing
3339        along the same lines as exf package (checkpoint_lev?_directives.h)
3340    o exf:
3341      updated external forcing package
3342      - bug fixes carried over from ecco-branch
3343        (missing OBCS_OPTIONS.h in two routines)
3344      - enable easy to use "no forcing".
3345      - added exf I/O for atmospheric loading
3346      - added exf I/O for runoff data
3347      - transfered scaling between exf <-> MITgcm to exf namelist
3348    o Adding new verification experiment global_with_exf.
3349      This verification experiment is almost identical to the
3350      global_ocean.90x40x15 experiment, except that it uses
3351      the exf (and cal) package instead of the
3352      external_fields_load routine (cf README file).
3353    
3354    checkpoint46m_post
3355    o modified testscript to return -- when there are no lines of "%MON" output
3356    o added new flag "quasiHydrostatic" for QH mode
3357      and new routine quasihydrostaticterms()
3358    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
3359      New routine: mom_u_coriolis_nh()
3360    o fixed sign of non-hydrostatic metric terms in u and v equations.
3361      Depend on correct sign of gravitySign.
3362    o added work.pc* to .cvsignore in aim directories using ifc
3363    o introduced flag for controllin non-hydrostatic metric terms
3364    o removed gravitySign from PARM04
3365    o switched to g77/ifc from pgf77 in aim experiments
3366    
3367    checkpoint46l_post
3368    o made convective adjustment work with pressure coordinates:
3369     - changed the direction of k-loop in convective_adjustment.F for the
3370       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
3371     - adjusted the reference pressure k-index in convective_adjustment.F
3372     - adjusted the convection condition in convect.F (in analogy to
3373       calc_ivdc.F)
3374     - convective_adjustment no longer computes anything on the halos
3375     - removed the warnings about negative salinity from find_rho.F and
3376       find_alpha.F; instead the new routine look_for_neg_salinity, called
3377       at the beginning of find_rho, find_alpha, and find_beta, does a
3378       check of the entire slice, if CPP-option
3379       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
3380    checkpoint46l_pre
3381    
3382    checkpoint46k_post
3383    o fixed the verification/global_ocean.90x40x15 experiment:
3384     - new bathymetry (the world according to A., JMC, and M.)
3385     - new initial fields and forcing fields (*.bin files)
3386     - new POLY3.COEFFS (for the next release one should switch to a full
3387       equation of state: JMD95P or MDJWF)
3388     - fixed several errors and redundancies in the data file
3389     - experiment uses looped cells
3390     - added matlab directory with diagnostic scripts for plotting of output
3391    
3392    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
3393     - read AIM physics parameters from a file (data.aimphys)
3394     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
3395    
3396    checkpoint46j_post
3397    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
3398    o move wVel computation at the end of the time step, in S/R integr_continuity
3399    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
3400    o update timeave pkg for wVel diagnostic.
3401    checkpoint46j_pre
3402    
3403    checkpoint46i_post
3404    o Clean up AIM package (and keep the results unchanged):
3405      include CPP_OPTION and use IMPLICT NONE in all routines ;
3406      declare all the variables _RL ; use _d 0 for all numerical constants.
3407      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
3408    
3409    checkpoint46h_post
3410    o cleaned up the use of rhoNil and rhoConst.
3411      - rhoNil should only appear in the LINEAR equation of state, everywhere
3412        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
3413        and the dynamical equations are all divided by rhoConst
3414    o introduced new parameter rhoConstFresh, a reference density of fresh
3415      water, to remove the fresh water flux's dependence on rhoNil. The default
3416      value is 999.8 kg/m^3
3417    o cleanup up external_forcing.F and external_forcing_surf.F
3418      - can now be used by both OCEANIC and OCEANICP
3419    checkpoint46h_pre
3420    
3421     Added code to convert surface volume flux (fresh water) into
3422     a mass flux when using P coordinates in the ocean (OCEANICP).
3423     Note: It assumes you have set rho0=rhoConst=density of fresh water.
3424    
3425    checkpoint46g_post
3426    o Include a new diagnostic variable phiHydLow for the ocean model
3427      - in z-coordinates, it is the bottom pressure anomaly
3428      - in p-coordinates, it is the sea surface elevation
3429      - in both cases, these variable have global drift, reflecting the mass
3430        drift in z-coordinates and the volume drift in p-coordinates
3431      - included time averaging for phiHydLow, be aware of the drift!
3432    o depth-dependent computation of Bo_surf for pressure coordinates
3433      in the ocean (buoyancyRelation='OCEANICP')
3434      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
3435        Theta, Salinity, and Pressure in the parameter list. This routine is
3436        presently contained in find_rho.F. This routine does not give the
3437        correct density for 'POLY3', which would be a z-dependent reference
3438        density.
3439    o cleaned up find_rho
3440      - removed obsolete 'eqn' from the parameter list.
3441    o added two new verification experiments: gop and goz
3442      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
3443    checkpoint46g_pre
3444    
3445    checkpoint46f_post
3446    o Enable tangent linear (forward mode) gradient checks:
3447      - extended active file handling to g_... files
3448      - added TANGENT_SIMULATION to theSimulationMode
3449      - extended grdchk package accordingly
3450    o added tangent linear setup in verification/carbon/code_ftl
3451    o added adjoint setup in verification/front_relax/code_ad
3452    
3453    checkpoint46e_post
3454    o Added new equation of state -> MDJWF
3455      - EOS of McDougall et al., 2002, JAOT, submitted
3456      - caveat: the equation of state is only valid for a smaller (more
3457        realistic?) range of values than JMD95P/Z and UNESCO
3458      - added masks to the calculation of pressure in store_pressure
3459      - added more check values for density in check_eos (ini_eos.F), some of
3460        the old check values are out of the range of the MDJWF-eos, so don't
3461        expect perfect matches for those
3462    checkpoint46e_pre
3463    
3464    checkpoint46d_post
3465    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
3466      'OCEANICP', also initialised field pressure correctly in ini_eos in the
3467      case of pressure coordinates. eosType='JMD95Z' in
3468      combination with buoyancyRelation='OCEANICP' now causes an error.
3469    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
3470      in find_alpha/beta.
3471    checkpoint46d_pre
3472    
3473    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
3474      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
3475    
3476    checkpoint46c_post
3477    o Changes necessary for ocean in p-coordinates
3478     -  Added new buoyancy relation = 'OCEANICP'
3479     -  Added new parameters = gravitySign (this used to be contained inside
3480        the factor dRdZ which I added when we first switched to R coordinates).
3481     X GM/Redi is not compatible (yet)
3482     X bottom drag and no-slip need to be debugged.
3483    checkpoint46c_pre
3484    
3485    checkpoint46b_post
3486    o Added new equation of state -> JMD95Z and JMD95P
3487      - EOS of Jackett and McDougall, 1995, JAOT
3488      - moved all EOS parameters into EOS.h
3489      - new routines ini_eos.F, store_pressure.F
3490    o Added UNESCO EOS, but not recommended because it requires
3491      in-situ temperature (see JMD95)
3492    o Modified formatting for knudsen2.f in utils/knudsen2 and added
3493      unesco.f to be used with POLY3
3494    checkpoint46b_pre
3495    
3496    checkpoint46a_post
3497    o Added (atmospheric) pressure loading
3498      - new field in FFIELDS.h, etc...
3499      - new cpp flag ATMOSPHERIC_LOADING
3500    o Changed hFacC to _hFacC in calc_phi_hyd.F
3501    o Added SHORTWAVE_HEATING to some files for consistency
3502    checkpoint46a_pre
3503    
3504    checkpoint46
3505    further merges from release1_p5
3506    o new ctrl package
3507      - adopted from ECCO environment to enable optimization
3508      - added Eliassen Palm fluxes to controls
3509    o added Eliassen Palm flux controls to gradient check package
3510    o cost package
3511      - Compatible with new ctrl package
3512      - added Eliassen Palm cost hooks
3513      - modif's of existing cost functions
3514    o Adjoint-related bug fixes in kpp:
3515      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
3516      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
3517    o autodiff package
3518      - flow directives:
3519        + new for S/R do_the_model_io
3520        + enhanced for S/R checkpoint
3521        + new gmredi.flow
3522      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
3523        disable adcommon.h/g_common.h by default.
3524      - fixed problem for adjoint of global_max
3525    o modified verification/carbon/
3526    o New setup for adjoint of global_ocean
3527    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
3528    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
3529    o incorporated hooks for sponge layer code (external_forcing.F)
3530    
3531    checkpoint45d_post
3532    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
3533    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
3534      (affects plume_on_slope "cg2d" output)
3535    o add new parameter deltaTfreesurf for free-surface time stepping
3536    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
3537    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
3538    o change phiMin in exp1 (to agree with documentation)
3539    o add new flags:
3540     - T,S forcing inside/outside Adams-Bashforth
3541     - turn off temp,salt advection and/or forcing
3542     - for each tracer, define internal flag for multiDimAdvection & A-B
3543    o monitor: change definition of KE to check conservation of Energy
3544    
3545    checkpoint45c_post
3546    o Removed f90 comments ("!")
3547    o Modified initialisations to enable exf package for MITgcm
3548      (without invoking ECCO_PACKAGE).
3549    o modifications to gradient check package (Martin Losch)
3550      - enable centered differences
3551      - modified format of standard output
3552    
3553    checkpoint45b_post
3554    o cleaned exchange calls in cg2d
3555    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
3556    o included CPP option SINGLE_LAYER_MODE in thermodynamics
3557      to configure barotropic setup (Martin Losch)
3558    o moved some initialisations within bi,bj loop in dynamics
3559      (TAF flow dependency)
3560    o in initialise_varia, moved call packages_init_variables
3561      before convective_adjustment_init
3562      (corresponding adjustment of TAF tape initialisation).
3563    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
3564    
3565    checkpoint45a_post
3566    o compute Rho over the whole domain (extend iMin,jMin indices)
3567    o specific exchange for X-slice domain (case Ny=1)
3568    o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
3569    o solve_for_pressure : set cg2d_x to zero where OBCS are applied
3570    
3571    checkpoint44h_post = checkpoint45
3572    o Fix to restore differentiability:
3573      place at which packages_init_variables is called in
3574      initialise_varia is crucial for reverse control flow.
3575    o modifications in GMRedi to enable stable adjoint
3576      (corresponding modif's in thermodynamics, dynamics)
3577    o added missing hook for sponge layer code in external_forcing
3578    o modified test cost functions
3579    o storing in gad_advection (plus removal of write(0,*)!
3580    o missing headers TR1.h added in convective_adjustment routines
3581    o errorMessageUnit set non-equal zero in eeboot
3582      (conflict on some platforms, e.g. IBM SP3)
3583    o modified carbon verif.
3584    
3585    checkpoint44h_pre
3586    o vertical grid option: allow to put the Interface at the middle between
3587      2 cell-centers ; replace delZ in pkg/kpp by drF.
3588    o GM Advective form: Tracers are advected using the residual transport (=
3589      Euler+GM-bolus); set param GM_AdvSeparate=T to return to previous form.
3590    
3591    checkpoint44g_post
3592    o fix surface correction term in multiDimAdvection (affects plume_on_slope
3593      results) ; ifdef missing in thermodynamics.F
3594    
3595    checkpoint44f_pre,checkpoint44f_post
3596    o added PTRACERS package
3597      This allows an arbitrary number of passive tracers to be integrated
3598      forward simultaneously with the dynamicaly model.
3599      + Implemented so far:
3600        - basic forward algorithm (time-stepping, advection, diffusion, convection)
3601        - I/O and checkpointing
3602        - GM/Redi  *but*  using the GM/Redi coefficient of Salt
3603      + Not implemented so far:
3604        - KPP
3605        - OBCS
3606      + No specific example supplied (yet) but global_ocean.90x40x15 has the
3607        necessary data.ptracer file. Simply use -enable=ptracers and uncomment
3608        line in data.pkg.
3609      + This package is disabled by default since it increases storage.
3610    
3611    
3612    o testscript: added -cleanup option
3613    o Shap_filt: a) new shap_filt S/R to use no-slip BC with S2 filter
3614                 b) enable to filter 2D fields.
3615    
3616    checkpoint44e_pre,post
3617    o re-wrote convective adjustment to use pre-calculated weights
3618      Affects: model/src/convective_adjustment.F, convective_adjustment_ini.F
3619      Adds:    model/src/convective_weights.F, convectively_mixtracer.F
3620      Original calls to convect() still in place.
3621    
3622    chkpt44d_pre,post
3623    o added missing EXCLUDE_MONITOR flags
3624    o changed "e" to "_d" in gmredi_slope_limit, gmredi_slope_psi
3625      (incompatible typ in MIN/MAX expressions caused problems
3626      on IBM SP3)
3627    o in genmake added variable MAKEDEPEND
3628      plus resetting for case SunOS
3629    o added timer_stats.c routine for IBM SP3
3630    o removed variables in dynamics
3631    !!! I forgot to create tag chkpt44d_pre !!!
3632    !!! But chkpt44d_pre = chkpt44c_post    !!!
3633    
3634    o real fresh water flux implemented with non-linear free-surface.
3635    
3636    chkpt44c_pre,post
3637    o few fix (mask in shap_s2, EmPmR in external_field_load,
3638      USE_NATURAL_BCS in solve_for_P);
3639    o add arguments myIter & myTime to S/R obcs_calc & solve_for_P
3640    
3641    checkpoint44b_pre/_post
3642    o merge of relevant stuff from the ecco-branch:
3643      - genmake: removed $S64 overwrite for case SunOS
3644      - pkg/exf: update and corrections for field swapping and obcs
3645      - pkg/ecco: parameter lists for the_model_main, the_main_loop
3646                  harmonized between ECCO and MITgcm
3647      - pkg/autodiff: added flow directives for obcs, mdsio_gl_slice
3648                      updated checkpointing_lev... lists for obcs
3649      - model/src: minor changes in forward_step, plot_field
3650                   added directive for divided adjoint in the_main_loop
3651      - pkg/mdsio: added mdsio_gl_slice
3652    
3653    o check parameters & config (chkpt44a_pre,post)
3654    o OBC and NonLin_FrSurf.
3655    
3656    checkpoint44
3657    o fix bug in mom_vi_del2uv
3658    o select when filters are applied ; add options to zonal_filter (data.zonfilt)
3659    o gmredi: fix Pb in the adiabatic form ; add options (.e.g. Bolus advection)
3660    o update AIM experiments (NCEP input files)
3661    o improve and extend diagnostics (Monitor, TimeAve with NonLin-FrSurf)
3662    o added some stuff for AD
3663    
3664    checkpoint43
3665    o added two new advection tests
3666    o added global 4x4 degree ocean test
3667    o added test of H&S94 with free surface on cube
3668    o some final mods for gradient check, adjoint,...
3669    
3670    checkpoint42
3671      Fixed AD-related problems:
3672    o Store directives up-to-date with re-arranged Adams-Bashforth
3673      (mainly thermodynamics.F)
3674    o New store directives for multi-dim. advection schemes
3675      * new CPP flag ALLOW_MULTI_DIM_ADVECTION
3676      * new common block and key passkey
3677      (mainly gad_advection.F)
3678    o Modified store directives for split of dynamics/thermodynamics
3679      for the case ALLOW_KPP
3680    o Cleaned argument list for timestep_tracer.F
3681    
3682    checkpoint41
3683    o re-formatted/added comments in prologues of key subroutines
3684      to work with protex
3685    
3686    checkpoint40
3687    o moved calc_gs, calc_gt and calc_tr1 back to model/src
3688    o added FLT (floats) package from Arne along with demo. experiment
3689    o re-arranged Adams-Bashforth scheme for tracers to allow easier
3690      implementation of forward-in-time forcing terms
3691    o more mods for non-linear free-surface including new variable
3692    o modified multi-dim method to work on cube
3693    o bug fix in KPP (from DM)
3694    
3695    checkpoint40pre9
3696    o added DST advection schemes
3697    o fix MPI bug on SGI's
3698    o modifications for non-linear free-surface
3699    o fixed conditionals for fixed flow/passive tracer only mode
3700    o added tension/strain form of stress tensor
3701    o changes to commenting of arguments for TAF/TAMC
3702    o added/updated many matlab scripts
3703    o added multi-dimensional advection method for tracers
3704      
3705    checkpoint40pre8
3706    o new package rw/
3707      Added method for dumping intermediate local arrays:
3708      mdsio_writetile - same as mdsio_writefield except works from inside
3709                        bi,bj loop
3710      mdsio_writelocal - same as mdsio_writetile except works for local
3711                         arrays
3712      write_local_r? - higher-level wrapper for mdsio_writelocal
3713      Controlled by diagFreq. Defaults to zero (ie. no dumps)
3714      Example given at end of mom_vecinv.F that dumps some local arrays.
3715    o replaced calc_mom_rhs.F by mom_fluxform.F/mom_vecinc.F to
3716      control flux-form versus vector invariant code.
3717      Switch is runtime flag vectorInvariantMomentum (defaults to false)
3718      or genmake -DISABLE ...
3719    o TAMC-related update to cope with mom_fluxform.F/mom_vecinc.F
3720      (additional storing is now needed for case vecinv;
3721      currently nothing implemented to switch this storing off
3722      in case fluxform is used since no CPP flag available).
3723    
3724    checkpoint40pre7
3725    o bug fix in dynamics.F
3726      calc_viscosity called before k=1,Nr loop.
3727    o added some #ifdef's ALLOW_PASSIVE_TRACER
3728    o cleaned initialisations in ctrl_map_ini
3729      related to TAF
3730    
3731    checkpoint40pre6
3732    o split dynamics into thermodynamics & dynamics
3733    o corresponding split of calc_diffusivity into
3734      calc_diffusivity, calc_viscosity
3735      (kpp_calc_diff, kpp_calc_visc).
3736    o Added diffkr, kapgm to control variables
3737    o bug fix in gmredi_slope_limit for ldd97
3738    
3739    checkpoint40pre5
3740    o proper initialization of Adams-Bashforth time stepping
3741      + uses forward step for very first step of model (iter=0)
3742    o re-generated *all* output since almost all output is modified by this
3743      change (sorry but we've been putting this one off for about 2 years)
3744      + natl_box, aim.5l_Equatorial_Channel and aim.5l_zon-ave were
3745        *not* regenerated since they are already out of date and I don't
3746        want to create the impression that they are suddenly working.
3747    o removed KAP stuff for DEC's
3748    o modified/added many .cvsignore files in */code and */input
3749    o added new expt "solid-body.cs-32x32x1"
3750      + this uses an alternative form of ini_curvilinear_grid.F which
3751        is not necessarily any better than the current one...
3752    
3753    checkpoint40pre4
3754    o added re-initialisations of utrans,vtrans,rtrans in
3755      calc_common_factors which are crucial for TAF.
3756    o extended iMin,jMin range for calc_common_factors,
3757      calc_diffusivity
3758    o added option ALLOW_PASSIVE_TRACER
3759    o a few minor updates and fixes
3760    
3761    checkpoint40pre3
3762    o created calc_gtr1.F for gad package
3763    o split the_main_loop and re-introduced forward_step
3764    o some recomputations of nIter0 for TAMC
3765    
3766    checkpoint40pre2
3767    o Updated to latest branch of AJA, JMC
3768    o Added gradient check package
3769    o Added routines for passive tracer handling
3770    o Added carbon sequestration sensitivity experiment
3771    
3772    checkpoint39
3773     o Modifications and fixes to support TAMC
3774       (mainly missing or wrong directives)
3775     o Corrected common blocks when fooling TAMC to produce adjoint I/O
3776       in addummy_in_stepping
3777     o Updated verification/vero/ (bug fixes in code/, correct pickups in input/)
3778     o Enabled "sliced" (xz-,yz-) exchanges, needed for obcs.
3779     o Included following packages:
3780       cal: calendar
3781       exf: external forcing
3782       ecco: essential routines to control use of cal, exf
3783             (NB: this is not the full ECCO environment)
3784     o disabled some packages by default in genmake
3785    
3786    checkpoint38
3787     o see notes_c37_adj.txt
3788     o corrected wrong layer index in external_forcing_t
3789     o replaced the_main_loop/forward_step by the_main_loop
3790     o removed forceoutput from write_state
3791       (replaced criteria for initial/final state)
3792     o added runtime flag for pre-C35 pickups: usePickupBeforeC35
3793    
3794    checkpoint37
3795     o mdsio.F routine split and packaged in pkg/mdsio
3796       (mdsio.F and mdsio_gl.F still exist in eesupp/src but are not
3797        used unless genmake -disable=mdsio)
3798     o allow a more precise surface-geopotential gradient for the atmosphere
3799       taking into account the change in space of Alpha (=1/rho) at the surface.
3800     o variable "etaN" (replace cg2d_x) is the surface R-anomaly [r unit]
3801       (ocean: sea surface height [m] / atmos: surface pressure anomaly [Pa])
3802     o Change units: Phi_Hydrostatic (=phiHyd), Phi_Surface(=cg2d_x) and
3803       Phi_NonHydrostatic (=cg3d_x), all have now the dimension of a potential
3804       [m2/s2] (pressure/rhoConst in the ocean ; Geo-Potential in the atmosphere).
3805     o Time-Average diagnostics defined as a pseudo package "timeave".
3806     o pickup files : old pickup (before c35) did not work with new code (c35
3807       and after) unless activating 2 commented lines in initialise-varia.
3808     o Non-Hydrostatic pickup file Pb fixed.
3809     o bug with Rigid-lid version (since c35) fixed.  
3810    
3811    checkpoint36
3812     o implement Crank-Nickelson barotropic time-stepping
3813     o recover Time-Average diagnostics
3814     o fix Pb in checkpoint (PR#19)
3815     o AIM become a standard package ; clean unused CPP_kees
3816    
3817    checkpoint35
3818     o subtantial rewrite of dynamics.f
3819     o allows staggered time-stepping
3820     o packaged obcs, aim (Atmospheric Physics), zonal_filt, shap_filt
3821     o added bottom drag (linear + quadratic)
3822    
3823    checkpoint34
3824     o Modified exchange routines for correct reverse simulation.
3825     o Added verification output to comply with bug fix in impldiff.F
3826       as of c33 (exp2, natl_box).
3827     o Corrected store directives in dynamics.F
3828     o Corrected array boundaries in impldiff.F
3829     o Corrected array dimensions in gmredi.
3830       Added temporary scalars to avoid storage by TAMC (gmredi, kpp).
3831     o Added routine GLOBAL_SUM_INT to global_sum.F
3832     o Added mdsio_gl.F for ECCO purposes.
3833    
3834    checkpoint33
3835     o Fixed bug in lower BC in impldiff.F
3836     o Fixed confusion about units of forcing arrays in FFIELDS.h
3837       namely Fu,Fv,Qnet,Qsw,EmPmR:
3838       - Removed verification/natl_box/code/external_fields_scale.F
3839         (did not differ from that in model/src)
3840       - Changed units of fu,fv,Qnet,Qsw,EmPmR back to proper units
3841         (see FFIELDS.h for description)
3842       - Scale fu,fv,Qnet,Qsw,EmPmR when used in external_forcing_surf.F,
3843         kpp_calc.F and kpp_transport_t.F
3844       - Removed model/src/external_fields_scale.F and calls to it
3845       - verification/natl_box uses flux data with "atmospheric" sign so
3846         a special version of external_fields_load.F is used to
3847         change the data as it's read in. This way, the arrays
3848         have the right units and signs at all times tha a user could
3849         possibly use them.
3850     o Corrected genmake to delete a temporary file during configuration
3851    
3852    checkpoint32
3853     o Scaling of forcing fields moved from external_forcing.F to
3854       external_fields_scale.F, called directly after loading fields.
3855     o Surface relaxation terms added to surface tendency fields in
3856       extra subroutine.
3857     o impldiff.F changed to avoid storing by TAMC of huge intermediate
3858       fields.
3859     o Changes in GMRedi to comply with packaging structure.
3860     o Modifications and bug fixes in KPP package.
3861     o Verification experiment for KPP added (verification/nat_box/)
3862    
3863    checkpoint31
3864     o Packages interface brought in line with defined standard
3865       -> new routines packages_...F
3866       -> changes in initialise_fixed.F, initialise_varia.F
3867       -> enables initialisation interface for ECCO package
3868     o Rescaling of external forcing fields immediately after read
3869       (removed from external_forcing.F)
3870       -> new: surface_fields_scale.F
3871       -> affects ini_foorcing.F, external_fields_load.F
3872     o Computation of surface tendencies before tendency updates.
3873       -> new: external_forcing_surf.F
3874     o Change of variable names useGMRedi, useKPP, useECCO
3875     o Further changes in dynamics.F, impldiff.F for TAMC
3876     o Tested for experiments 0, 2, 4.
3877       - not yet tested for GMRedi.
3878       - not yet tested for KPP.
3879    
3880    checkpoint30
3881     o Updates for OBCs
3882     o New experiment for test OBCs (internal_wave)
3883     o New output.txt in verification/exp4/results/
3884     o Updates for KPP: calculation of viscosity corrected, new variables
3885       kpp_dumpFreq and kpp_taveFreq
3886     o CPP'd calls to system routines for TARGET_CRAY_VECTOR (P.H.)
3887       and entry for T90 in genmake
3888    
3889    checkpoint29
3890     o packaged KPP and GM/Redi
3891    
3892    checkpoint28
3893     o Corrected initialization of hFacMin for difference vertical coordinates
3894     o Modified calculation of partial cell thickness to more robust algorithm
3895     o config_summary.F: replaced write_1D_... by write_0D_...
3896       read_write.F: added subroutines write_0D_...
3897     o routines calc_common_factors, calc_gs, calc_gt, calc_phi_hyd, find_rho:
3898       included some initialisations required for TAMC.
3899     o routine calc_isoslopes: modified sqrt computation to make it
3900       differentiable for zero argument.
3901     o routines dynamics, impldiff:
3902       included store directives and tape key computations required for TAMC.
3903     o ALL TAMC related changes are between ifdef ALLOW_AUTODIFF_TAMC
3904    
3905    checkpoint27
3906     o fixed calc_isoslopes() to so that cancellation of terms in tensor
3907       formulation works properly with variable resolution.
3908     o restructured the calling tree between the_model_main() and dynamics()
3909     o split initialise() into initialise_fixed() and initialise_varia()
3910     o introduced initialization file pSurfInitFile for free surface (cg2d_x)
3911       in new routine ini_psurf()
3912    
3913    checkpoint26
3914     o moved some #ifdef in optional routines to encompass everything
3915       except the argument declarations. This was using up some memory.
3916     o fixed macros like _ADT to work with both versions of Linux cpp
3917     o cleaned up some unused and uninitialized variables
3918       (helps when debugging with strict compile options)
3919     o split up CPP_EEOPTIONS.h into options and macros
3920       (macros are now in eesupp/inc/CPP_EEMACROS.h)
3921     o patch for 2 processor JAM mode
3922    
3923    checkpoint25
3924     o updates for OBCs and NH
3925     o dramatically reduced memory usage
3926     o added "JAM" routines for use on Artic network
3927     o parameterization of convection by implicit vertical diffusion
3928     o added a diagnostic of convective index
3929     o moved call to calc_divg_hat() from dynamics() to solve_for_pressure()
3930       (this is was partly for OBCs and NH but also in anticipation of
3931        an explicit free-surface option)
3932     o initial state input files for U and V
3933    
3934    checkpoint24
3935     o Removed some spurious "REAL"s
3936     o Updated KPP to latest version from JPL
3937     o Added a COS(latitude) in horizontal viscosity
3938    
3939    checkpoint23
3940     o Added del^4 diffusion for salt and temperature
3941     o Multiple minor fixes (implicit none's, arguments to global_sum, etc.)
3942    
3943    checkpoint22
3944     o Made many small changes: implicit none, format(i5), etc...
3945     o Introduced KPP mixing scheme (compiles and runs but *not* tested)
3946    
3947    checkpoint21
3948     o Introduced new I/O package that supports direct-access records (mdsio.F)
3949     o Split-up mid-level I/O routines
3950     o Updated input data for experiments 0,1,2,4 and 5
3951     o Finally removed the genmake.* scripts (everyone seems happy with genmake)
3952    
3953    checkpoint20
3954     o Tidied up open-boundaries some more
3955     o Added non-hydrostatic code
3956     o Fixed some input data
3957     o Modified MPI start-up to work in "coupled" context.
3958    
3959    checkpoint19
3960     o Tidied up directory structure for verification experiments.
3961     o Added new code for open boundaries.
3962     o Corrected advective terms near boundaries.
3963     o Added CPP flag for "old UV" geometry and corrected spherical geometry.
3964     o Implemented free-slip/no-slip BCs and del^4 dissipation.
3965     o Split default parameters out of ini_parms.F into set_defaults.F.
3966    
3967    checkpoint18
3968     o Further changes for optional code generation with
3969       CPP - ugh!
3970    
3971    checkpoint17
3972     o Beginning to incorporating modularity
3973       for supporting atmos. and ocean configs.
3974     o Small changes for TAMC complinace
3975     o New ultra simple test case. Barotropic box
3976       configuration "exp0".
3977    
3978    checkpoint16
3979     o Minor changes to exchange routines to support
3980       accumulation in reverse mode. Adjoint of an
3981       assignment is an addition.
3982     o Changes to support compilation by TAMC (LR(1)
3983       syntax) and by g77 under Linux ( 72 character
3984       limit ).
3985    
3986    checkpoint15
3987     Rewrote exchange routines to allow
3988     o General tile <-> tile connectivity.
3989     o TAMC reverse mode flag ( is this really needed? )
3990     o Variable width overlap and exchange region widths.
3991     o Hooks for sharing data via DMA, Arctic, Memory Channel,
3992       shmput/shmget, VIA, SYSV shmem and every other cool
3993       communication method.
3994    
3995    checkpoint14
3996     Consistent isomorphism chages made. These allow dynamical core
3997     to support both pressure and meters as a vertical coordinate.
3998    
3999    checkpoint13
4000     Release which corrects global_max problem and a couple
4001     of KGM time-averaging diagnostic errors. Also contains
4002     a double-gyre experiment setup as well as the baseline
4003     4 degree global template. The double gyre template is
4004     organised to allow it to be applied automatically to
4005     the baseline configuration.
4006    
4007    branch-point-rdot
4008     A few tidy-ups have been made bt the real point of this
4009     check-point (excuse the pun) is to allow a branch to be
4010     made for the purposes of adding the rDot alterations.
4011     I don't want to commit the rDot to the main-trunk until
4012     we've actually tested it...
4013    
4014    checkpoint12
4015     Tidy up and added generic genmake script (formerly
4016     configure script).
4017     Released to testers.
4018    
4019    checkpoint11
4020     Re-arranged initialise() and introduced ini_vertical_grid()
4021     and ini_masks_etc().
4022    
4023  checkpoint10  checkpoint10
4024   Introduced the configure script.   Introduced the configure script.
4025   Separated out the diags package.   Separated out the diags package.

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