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revision 1.76 by jmc, Fri Jul 12 14:52:08 2002 UTC revision 1.1019 by jmc, Sat Aug 30 16:37:48 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    checkpoint61c
8    o add option ALLOW_ADDFLUID and run-time selector "selectAddFluid"
9      to add mass source/sink of fluid in the interior (3-D generalisation
10      of oceanic real-fresh water flux).
11    o pkg/monitor: fix recip_dr argument in mon_advcflw2 call (-> advcfl_W_hf_max)
12    o vermix test experiment: switch from LINEAR EOS to MDJWF (not tested before)
13    o new pkg: down_slope
14      density-driven downsloping flow parameterisation (Tellus, 1999, 412-430).
15      - presently, modify T & S inland (dwnslp_calc_rho.F).
16        can be avoided if rho was stored in common bloc and used in calc_phi_hyd.
17      - implementation for ocean in P-coords not tested.
18      - add secondary test to global_ocean.90x40x15 (input.dwnslp) to check this pkg.
19    o move kSurfC,kSurfW & kSurfS from SURFACE.h to GRID.h (next to kLowC)
20      (to facilitate conversion of oceanic pkg to p-coordinate).
21    o change FIND_RHO to FIND_RHO_2D :
22      pass arguments tFld & sFld as local (tile) 2D-arrays ; +fix EOS_CHECK.
23    o new pkg: cheapaml
24    
25    checkpoint61b
26    o exch2:
27      change index bounds in rx2_cube exchanges (new S/R: EXCH2_GET_UV_BOUNDS)
28      - no longer depend on the order sequence (N,S,E,W).
29      - 3rd exchange no longer needed (tested with 24 tiles).
30      - same modif to hand-written adjoint S/R (global_ocean.cs32x15: zero diff)
31      - exch_UV_A-grid readily available (but not yet tested).
32      comment out 3rd exch call and remove copy of V to U at SE & NE face-corners
33      (both are no longer needed) in exch_uv: no effect in forward run; but
34       get truncation error differences with adjoint exch.
35    o exch2:
36     - change index-bounds storage (moved from target to local tile,
37       more intuitive this way) ; rename/remove some variables.
38     - change utils/exch2/matlab-topology-generator & code_mods accordingly.
39    
40    checkpoint61a
41    o exch2/matlab-topology-generator:
42      fix bug in index bounds for N-S internal exchange (hard to tell if this
43      had any effect on the solution).
44    o pkg/mnc: small fix in mnc_handle_err: make sure that length of msgbuf
45      is exceeded
46    o testreport: modify syntax of awk, so that it works also with
47      awk, and not only with nawk and gawk
48    
49    checkpoint61
50    o autodiff
51      Change default for TAF usage by removing argument '-nonew_arg'
52      This changes TAF subroutine argument list (ordering of active var.)
53      Omission of this flag leads to incompatibility w.r.t. TAMC
54      To restore TAMC-compatibility, need following modifs:
55      * use adoptfile tools/adjoint_options/adjoint_tamc_compatibility
56      * use CPP option #define AUTODIFF_TAMC_COMPATIBILITY
57      Tested TAF version is 1.9.22
58      N.B.: exch2 hand-written adjoint code currently not TAMC compatible
59    
60    checkpoint60
61    --->>> This is the last checkpoint for which generating the adjoint
62    --->>> is done via the TAMC-compatibility TAF-flag "-nonewarg"
63    --->>> by default.
64    --->>> Future checkpoints will ommit this flag by default.
65    o pkg/generic_advdiff, os7mp: simplify and avoid division by zero.
66    o pkg/grdchk: Add gradient check to etan0 perturbations.
67    o pkg/exf: read ice area from file (#ifdef ALLOW_ICE_AREAMASK).
68    o pkg/autodiff: more flexibility in zeroadj.
69      model/src: modifying do_oceanic_phys.F accordingly.
70    o pkg/ctrl: Bounds for (kapgm,kapredi,eddypsi) parameter estimation.
71    o model/src and pkg/gmredi: GMREDI_WITH_STABLE_ADJOINT CPP option
72      special setup of gmredi for which the adjoint is stable
73      enough for parameter optimization.
74    o bridging the gap between eddy stress and GM.
75      -> eddyTau is replaced with eddyPsi (eddyTau = f x rho0 x eddyPsi)
76          along with a change in CPP option (now ALLOW_EDDYPSI).
77      -> when using GM w/ GM_AdvForm:
78          The total eddy streamfunction (Psi = eddyPsi + K x Slope)
79          is applied either in the tracer Eq. or in momentum Eq.
80          depending on data.gmredi (intro. GM_InMomAsStress).
81      -> ALLOW_EDDYPSI_CONTROL for estimation purpose.
82      The key modifications are in model/src/taueddy_external_forcing.F
83      pkg/gmredi/gmredi_calc_*F pkg/gmredi/gmredi_*transport.F
84    
85    checkpoint59r
86    o new S/R (pkg/mdsio/mdsio_facef_read.F) reading of sNx+1 x sNy+1 array
87      from per-face file (take S/R READSYMTILE_RS out of ini_curvilinear_grid.F);
88      fix option to read coriolis(@ cell-corner) from files with CS-grid.
89    o pkg/mnc: add some attributes to standard 1D-coordinate variables
90    o pkg/diagnostics: enforce missing_value attribute for scalar variables at
91      mass points, when using mnc for output
92      - add runtime parameter (missing_value, missing_value_int) to override
93        default (which is the value of getcon('UNDEF'))
94    o pkg/mnc: prepare mnc for the actual use of missing values with the
95      diagnostics package: small fix in mnc_cw_readwrite.template and more
96      initialisation of never used fields
97      - replace mnc_common.h and mnc_id_header.h with corresponding upper case
98      versions
99    o pkg/thsice/thsice_ini_vars.F added default initial values so that
100      thermodynamics sea ice solver does not blow up when some initial fields
101      are missing.
102    o move from external_forcing_surf.F to ini_forcing.F
103      the p-coord. hack consisting in using pLoad to set phi0surf ;
104      update output of tutorial_global_oce_in_p (affected @ truncation level).
105    o Freshen up a bit hs94.1x64x5, notably:
106      remove rotationPeriod and tRef=5*0. (adjoint only), and add
107      exactConserv=.TRUE.
108    o pkg/generic_advdiff:
109      change option GAD_ALLOW_SOM_ADVECT to GAD_ALLOW_TS_SOM_ADV which only
110      applies to files where Temperature & Salinity 2nd Order moments are used.
111    o pkg/ptracers: add second-order moment advection schemes (80 and 81);
112      this uses a dynamically allocated internal state data structure
113      (#define PTRACERS_ALLOW_DYN_STATE in PTRACERS_OPTIONS.h)
114      and requires a fortran 90 compiler
115    
116    checkpoint59q
117    o pkg/mom_vecinv: Add energy & enstrophy conserving scheme (selectVortScheme=3)
118       (from Sadourny, described by Burridge & Haseler, ECMWF Rep.4, 1977)
119    o Refresh tutorial_global_oce_biogeo, notably:
120      - change bathymetry (put back seamounts in ACC, use hFacs)
121      - change EOS (POLY3 --> JMD95Z)
122      - use Bryan-Lewis vertical diffusivity
123      - use multidimensional advection
124      - remove old virtual virtual in dic pkg, now done through ptracer pkg
125      - change a couple of parameters in dic pkg
126    o pkg/ctrl: change formula in adctrl_bound.F and add a parameter to ctrl_map_ini_gen.F
127    o pkg/obcs: change default to OBCSfixTopo = .true.,
128      - set OBCSfixTopo=.false. in exp4/input/data.obcs to reproduce old result
129      - replace "debugMode" with "debugLevel .GE. debLevB"
130    o implementation of TAF directives for gchem,cfc,dic
131    o remove "exp5" (replaced by tutorial_deep_convection).
132    o pkg/obcs: add code to fix topography gradients normal to open boundaries;
133      this requires computing the index fields OB_Jn/Js/Ie/Iw in obcs_readparms;
134      the code can be turned on by setting OBCSfixTopo = .true. in data.obcs
135      --> changes results in exp4, seaice_obcs
136    o tutorial_deep_convection :
137      update the set-up and increase resolution and domain size ; start
138      from pseudo initial conditions = output at t=120mn in order to see
139      something happening when running testreport.
140    o pkg/seaice: add os7mp as an advection scheme
141                  add check for advection schemes
142                  add a flag for restoring T and S underneath sea ice
143    o pkg/my82: add netcdf-support and diagnostics
144    o thsice pkg:
145      - Now hsMax limits snow height by turning it into ice following
146        flooding scheme (and now conserving energy)
147      - Slight rewriting of the formula in thsice_calc_thick.F
148      - Parameter rhowi eliminated to be replaced by floodFac = (rhosw-rhoi)/rhos
149      --> changes results of global_ocean.cs32x15.icedyn and global_ocean.cs32x15.thsice
150    
151    checkpoint59p
152    o gchem / dic / cfc :
153      - add useDIC, useCFC , read from "data.gchem" (& hold in GCHEM.h);
154      - add new parameter files: "data.dic" & "data.cfc" ;
155      - various re-arrangement in initialisation & header file ;
156      - fix tutorial_global_oce_biogeo for multi-threaded test.
157    o pkg/dic: test for "pickup_dic" file when restarting ;
158      if no pickup-file, can restart with a re-initialised pH (same as it did
159      before) providing pickupStrictlyMatch is set to False.
160    o change argument list of S/R PTRACERS_WRITE_PICKUP & MYPACKAGE_WRITE_PICKUP
161      + fix call to S/R GGL90_WRITE_PICKUP & DIC_WRITE_PICKUP
162    o add a "warning" (to Error msg file) when an Active Tracer is not using AB-2
163      and staggerTimeStep is off (needed for stability of Internal-wave dynamics).
164    o move out of PARAMS.h & data the last pieces of old-ptracer code: tauTr1ClimRelax,
165     & lambdaTr1ClimRelax ; put those 2 params in PTRACERS_PARAMS.h & data.ptracers
166       (note: not clear to me what lambdaTr1ClimRelax is still used for ...)
167    o pkg/mom_vecinv: - new parameter "selectVortScheme" to select which
168       scheme to use for vorticty-term ;
169     - compute upwindVorticity=T case within mom_vi_u/v_coriolis_c4.F
170       (with default selectVortScheme, return to original discretisation)
171     - remove weird combination (e.g.: upwindVorticity & highOrderVorticity)
172    o pkg/seaice: add a line to the summary to indicate grid type (B/C)
173    o in mom_calc_visc, fix average value of viscAh_W & viscA4_W next to the
174      bottom ; only used with variable horizontal viscosity and non-hydrostatic.
175      also fix diagnostics VISCAHW & VISCA4W.
176    
177    checkpoint59o
178    o dome/code/obcs_calc.F: avoid division by zero (detected using gfortran).
179    o change the loop ordering in most gad_*_adv_x.F to improve vectorization:
180      move a few statemens out the main loop into separate loops
181    o pkg/shelfice:
182      - sort out freshwater flux; convert freshwater fluxes to mass fluxes
183        (kg/m^2/s), does not break tests, because in verification/isomip,
184        rhoConstFresh=rhoConst (by accident)
185      - rearrange computation of tLoc, sLoc, pLoc to make code more efficient
186      - move S/R find_rho_scalar, pkg/ecco/sw_ptmp.F, pkg/ecco/sw_adtg.F into
187        new file model/src/seawater.F, so that they are available for all pkgs.
188      - convert potential temperature into in-situ temperature. This changes the
189        isomip tests => update tests
190    o add a flag writePickupAtEnd (default=true) to be able to suppress
191      writing a pickup at the last timestep
192    o tools/mpack-1.6 :
193      - disable automake (not working) and autoconf (not needed).
194      - update to version 1.6.4 which fix MD5 code on some 64 bits platforms
195        also cleaner with much less compilation warnings.
196    o pkg/profiles:
197      rename profiles_interp_mean_genericgrid as profiles_interp_mean_gg
198      (for "less than 32 characters name" compiler requirement)
199    o pkg/obcs and pkg/exf: added capability to specify seaice open boundary
200      conditions that have a different sampling frequency than S/T/U/V obcs
201    o pkg/diagnostics (stats-diags):
202      - fix global Min/Max in case 1 processor get only empty tiles
203    o genmake2: replace (4 times)
204         make genmake_tc_1.o >> genmake_warnings 2>&1
205      with
206         COMM="$CC $CFLAGS -c genmake_tc_1.c"
207         echo $COMM >> genmake_warnings
208         $COMM >> genmake_warnings 2>&1
209      to make genmake2 always see the value of CC as specified in the optfile.
210    o generic_advdiff: - prather advection scheme (SOM) coded for CS-grid.
211      - add diagnostics for 1srt & 2nd Order moments and sub-grid variance.
212      - modify verification advect_cs test to test SOM-advection on CS-grid.
213    o pkg/ctrl:
214      - Rewrite of ctrl_map_ini_ecco.F,
215        introducing a generic routine (ctrl_map_ini_gen.F).
216      - Modification of ctrl_bound/adctrl_bound handling control vector bounds.
217    
218    checkpoint59n
219    o pkg/diagnostics: for large number of diagnostics, store diagnostic mate
220      number in dedicate array "hdiag":
221      - new version of S/R DIAGNOSTICS_ADD2LIST : DIAGNOSTICS_ADDTOLIST
222        with 1 more argument (mate number); modify old version DIAGNOSTICS_ADD2LIST.
223      - many small changes (integer format) for large number of diagnostics
224      - start to use DIAGNOSTICS_ADDTOLIST (necessary for diagnostics with
225        a counter mate) in pkg diagnostics, ptracers, thsice & aim_v23.
226    o add parameter rotateGrid and Euler angles EulerPhi/Theta/Psi. For
227      usingSphericalGrid, this allows to define the rotated grid coordinates
228      via phiMin/thetaMin/dxSpacing/dySpacing, etc., but then re-compute the
229      geographical coordinates according to the inverse of the rotation defined
230      by the Euler angles, so that Coriolis parameter and online-interpolation by
231      exf works with the geographical coordinates on XC/YC/XG/YG.
232      Naturally, this feature does not work with all packages, so some
233      combinations are prohibited in config_summary (flt, flt_zonal, ecco,
234      profiles), because there the coordinates are assumed to be regular
235      spherical grid coordinates.
236    o pkg/gmredi,ctrl,ecco,autodiff,grdchk and model/src,inc:
237      - introduce isopycnal diffusion coefficient control.
238    o tools/adjoint_options:
239      - additional control vector components.
240    o pkg/mnc: have mnc create marginally meaning full coordinate variables
241      (that is the grid indices) if usingCurvilinearGrid and NOT EXCH2
242    o pkg/mypackage:
243      - add example of read/write pickup for state-var ;
244      - add entry points to the main code for state-vars diags & write-pickup.
245    o pkg/exf: rewrite of exf_getffieldrec.F to properly deal with year
246      transitions for useExfYearlyFields
247      - add new subroutine that determines the file to read from for
248        use*YearlyFields = .TRUE. and .FALSE.
249      - add a verification experiment to global_with_exf that tests
250        useExfYearlyFields with USE_EXF_INTERPOLATION defined
251    o pkg/obcs/exf: add useOBCSYearlyFields (=.FALSE.) to obcs with exf in
252      analogy to useExfYearlyFields; rearrange obcs_prescribe_read: two new
253      subroutines (which could be generated from a template, because they are
254      almost identical), for now they are included in obcs_prescribe_read.F for
255      simplicity
256    o pkg/exf:
257      - add a little more diagnostic to exf_interp_read (in analogy to
258        mds_read_field, can be turned off with debugLevel < debugLevA=1)
259      - improve vectorizability of exf_interp for TARGET_NEC_SX, makes code
260        ugly but fast by unrolling short inner loops, inserting a unroll=8
261        directive in routine lagran, and splitting a loop and making do while the
262        outermost loop (the latter requires the intoduction of index arrays)
263    o pkg/obcs: replace obcs_apply_area/heff/hsalt/hsnow with obcs_apply_seaice
264    o pkg/seaice: moved DIFFERENT_MULTIPLE from seaice_model to seaice_dynsolver
265      http://forge.csail.mit.edu/pipermail/mitgcm-devel/2008-January/003173.html
266    o verification/seaice_obcs: updated for restart test and latest options
267    o pkg/seaice: add a new flag SEAICEuseTEM to use a slightly different
268      ice rheology (so-called truncated ellipse, that gets rid of tensile stress);
269      for now this is only available for the C-grid code and also within
270      #ifdef SEAICE_ALLOW_TEM, because this option may slow down the EVP code
271    
272    checkpoint59m
273    o pkg/seaice: use different time constant for melting (SEAICE_gamma_t)
274      and freezing (SEAICE_gamma_t_frz) ice due to mixed layer temperature
275    o gad_som : fix flux output (& diagnostics) to have same units as other  
276      advection scheme fluxes (was previously multiplied by deltaT).  
277    o added verification/seaice_obcs both to test seaice open boundaries
278      and to provide an example matlab scrpt for generating them
279    o added verification/lab_sea/input.salt_plume for testing pkg/salt_plume
280    o pkg/salt_plume: clean up salt_plume_frac.F to
281      remove redundancy in PlumeMethod 1 and 4
282    o pkg/kpp: added saltplume diagnostics
283    o pkg/obcs and pkg/seaice:
284      - do not set uice and vice to zero when OB*icefile are unspecified
285      - OBCS_SEAICE_AVOID_CONVERGENCE is undefined by default
286      - moved seaice tracer obcs after call to seaice_growth
287    o pkg/salt_plume: added various options for salt plume depth
288      criterion and for vertical distribution of the salt
289    
290    checkpoint59l
291    o pkg/ptracers: new version of ptracers pickup:
292      read meta file and write only fields which are needed to restart.
293      ( same logic as main pickup file ; also using pickupStrictlyMatch )
294    o pkg/seaice:
295      - add timescale for melting due to warm mixed layer as a means of
296        setting SEAICE_availHeatFrac more conveniently
297      - add a CPP-flag/runtime parameter check for flooding algorithm
298      - reformulated availHeat in seaice_growth.F to be independent of AREA
299    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
300      unit changes
301    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
302    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
303      SX vector computer.
304    o pkg/seaice:
305      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
306        seaice forcing fields can now be read only through pkg/exf
307      - removed some unused halos
308    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
309    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
310      or U/VICE from U/VWIND before computing U/VSTRESS
311    
312    checkpoint59k
313    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
314      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
315    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
316      all experiments pass when compile with un-initialised var. checking option.
317    o added pkg/salt_plume
318    o script to test restart (for now, in MITgcm_contrib/jmc_script)
319    o pkg/seaice: new read/write pickup version.
320      read meta file and write only fields which are needed to restart.
321      ( same logic as main pickup file ; also using pickupStrictlyMatch )
322    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
323    o lab_sea.hb87: modify the domain & update output.hb87.txt :
324      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
325      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
326      process. Fixed here by closing the domain at the Northern boundary.
327    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
328    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
329      a set of consecutive levels in/from a 3-D array.
330    o pkg/ptracers:
331      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
332      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
333    
334    checkpoint59j
335    o in pkgs: dic, obcs, offline, rbcs:
336      standard way to compute coeff. for time interpolation between 2 time reccords
337      which retains full precision (& make results less dependent on compiler).
338      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
339    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
340      packages instead of reading ice cover and wind speed separately
341    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
342     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
343      to allow to compile customized code before the update)
344    o cleaning-up:
345      - fix CPP instruction syntax in pkg/obcs
346      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
347        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
348      - fix some threads issue in IO parts.
349    o pkg/dic:
350      - add tons of "_d 0" (--> much better testreports !)
351       and then update outputs of tutorial_global_oce_biogeo
352    o pkg/mom_fluxform:
353      add a special version of momentum advection intended to conserve momentum
354      next to a bathymetry step or a coastline edge. (default = off = #undef)
355    o new read/write pickup version:
356      - for now, only implemented for main (mdsio) pickup file.
357      - write out only what is needed to restart; merge pickup_nh , pickup_ph
358        and main pickup together.
359      - read meta file; read only what is needed to restart; stop if a field
360        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
361        if it make sense (even if the restart is not perfect).
362      - if no meta file, assume that pickup to read corresponds exactly to
363        a pickup that would currently be written.
364      - read pickup written in the old format (until checkpoint59i) if it
365        recognizes an old meta file (no field-list).
366      - add a meta file in exp. which starts from a pickup: 2 cases:
367        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
368         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
369        b) a meta file describing the content of the associated pickup file
370         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
371    o pkg/mdsio & pkg/rw:
372      - new routine to read a meta file ; new set of routine to read
373        Multiple-fields file (with meta file).
374    o added open boundary conditions capability for seaice
375        HSNOW, HSALT, UICE, and VICE
376    
377    checkpoint59i
378    o adjoint:
379      * fix multiDimAdvection adjoint
380        (partial recomputation problem by TAF for fVerT(:,:,kDown)
381        and comlev1 size definition (maxpass vs. max. number of tracers)
382      * verification/global_ocean.90x45x15 adjoint now tests
383        NLFS and multiDimAdvection using DST3 (=30)
384      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
385    o pkg/kpp: add "_d 0" to real constant (if missing);
386      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
387      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
388    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
389      for internal parameters related to restart process (formerly from PARAMS.h)
390      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
391    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
392      as argument. (only atm2d & obcs write_pickup have not yet been updated)
393    o pkg/monitor:
394      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
395      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
396      - account for deep Atmosphere factor and density factor (anelastic)
397    o added open boundary conditions capability for seaice HEFF and AREA
398    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
399      thermodynamics
400      - requires a little reorganization, which affects the testreport results
401        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
402        so that now the conservative form is tested
403      - add a few comments
404    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
405    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
406    o add new diagnostics to seaice: advective, diffusive fluxes (only for
407      multidim-advection, for scheme 2 they are not filled) and transports,
408      thermodynamic growth rates
409    o change units of EmPmR (inside the code, + within coupling interface)
410      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
411      Affects results @ truncation level (cg2d match) and update output of
412       experiments: lab_sea(6), global_ocean.90x40x15(10),
413      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
414      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
415      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
416      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
417    
418    checkpoint59h
419    o pkg/exf:
420      - improve vectorization by moving if-statement out of loops in
421        exf_mapfields, exf_radiation
422      - exf_bulkformulae.F: introduce 2D fields and vectorize code
423    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
424    o testreport:
425      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
426        monitor & update offline_exf_seaice exp. output.
427      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
428    o pkg/seaice:
429      - bug fix in the evp solver: boundary conditions were affected be
430        masking of zMax/zMin (changes results)
431      - minor bug fix in boundary conditions in seaice_calc_strainrates
432        (changes results for no_slip)
433      - seaice_lsr.F: make interpolation of eta dependent on boundaries
434      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
435      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
436        stress formulation and no-slip boundary conditions
437    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
438      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
439    o pkg/seaice: a first HSALT time stepping equation has been checked in
440    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
441      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
442      without requiring DO-IF statements
443    o pkg/thsice:
444      use continuous power-law function for partition of energy between lateral
445      melting/freezing and thinning/thickening ; old code using step function
446      still available with #undef THSICE_FRACEN_POWERLAW
447      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
448    o testreport: change AD testing : check against results/output_adm.txt
449      using same scripts as for forward test.
450    
451    checkpoint59g
452    o adjoint testing: in preparation for changing testreport:
453      - output format: cost and grad written on separated lines
454      - ad output results in directory "results" (instead of "results_ad")
455    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
456    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
457    o pkg/ecco: allow user defined cost function contributions
458    o testreport:
459      Allow to choose (per experiment) the list of tested output variables
460       and the main variable (used to issue a pass/FAIL ) ;
461      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
462      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
463      Also modify printing of summary:
464       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
465       b) echo the list of tested variables in the individual summary.txt of
466          each experiment.
467    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
468      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
469      (but still depend on the tile decompostion of the domain).
470    o pkg/seaice: change a discretization detail to make the B-grid code
471      "more symmetric". This change is likely to remove all "ridges/leads" that
472      where quasi-aligned with the grid in B-grid solutions. It may also be
473      the solution to the stress coupling issues with the B-grid.
474    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
475      remove .cvsignore from input dir. (since testreport no longer run here).
476    o pkg/thsice:
477     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
478     - fix reshaping of sea-ice just after advection:
479       melt all the ice only if ice-volume is too small.
480     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
481       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
482     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
483    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
484      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
485    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
486      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
487      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
488      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
489      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
490      -> update output.txt
491    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
492     this affects truncation error: -> update output.txt of exp:
493      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
494      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
495    
496    checkpoint59f
497    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
498    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
499      a bounded range (in forward mode)
500    o pkg/ecco, ctrl, autodiff and mom_common:
501     internal parameter controls, completements of implementations
502    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
503    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
504      (not seem any difference in testing results).
505    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
506       at face corners.
507    o pkg/generic_advdiff:
508     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
509      loop range indices for computing vertical advection tendency
510      and do the calculation in the interior only (no overlap) ;
511      for now, only implemented for SOM advection (to save CPU time).
512     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
513    o exch2 adjoint
514      First set of changes:
515      - add exch2 hand-written adjoint templates
516      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
517        This will require cleanup in pkg/autodiff/*.F
518        (changed routines currently kept separate in verif. code/)
519      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
520        that used to hide exch2 or cubed-sphere specific code
521        (commented via 'cph-exch2')
522    o pkg/seaice
523      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
524    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
525       output of global_ocean.cs32x15.thsice .
526    
527    checkpoint59e
528    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
529      for B-grid vector (not yet tested) and C-grid vector (<- only used
530      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
531    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
532      (#ifdef ALLOW_SALT_PLUME)
533    o gather_2d/scatter_2d: removed halo regions
534    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
535      scheme and the corresponding test case (under front_relax dir). For now,
536      only available with Skew-flux form and not yet tested in realistic set-up.
537      adjoint: store directives updated, but gradient checks deteriorated,
538      so maybe GM/Redi adjoint is now broken.
539    o seaice adjoint
540      * add AREA, HEFF, HSNOW as control variable
541        (should not change lab_sea results)
542      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
543    o pkg/seaice:
544      * added computation of saltFlux in seaice_growth;
545        For time being, sea ice salinity is assumed constant
546        contribution of snow flooding to freshening of sea ice is neglected.
547        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
548        defaults to 0.0 in order to maintain backward compatibility.
549        Typical values for SEAICE_salinity are 4 to 10 g/kg.
550      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
551      * added SEAICE_availHeatFrac, which specifies fraction of surface level
552        heat content used to melt or grow ice
553      * commented out cap of HICE: it helps keep ice thinner
554      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
555      * applied OBCS T/S mask to HEFFM sea ice mask
556    
557    checkpoint59d
558    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
559     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
560     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
561    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
562     and change default value of parameter "GM_Small_Number";
563     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
564       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
565       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
566    o pkg/ecco: cost function when applying pkg/smooth to controls
567    o pkg/ctrl: add forcingPrecond run time parameter
568    o pkg/seaice:
569     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
570     - fix bug in metric terms of u-equation in LSR solver (implicit part),
571       changes verification/lab_sea
572     - rearrange implicit part of u-equation in LSR solver to make it easier to
573       read, understand, and debug. This causes changes at the truncation level.
574     - fix (serious) bug in the boundary conditions (sign error in the implicit
575       part) of the LSR solver. Changes all LSR results.
576     - fixed problem with HSNOW initialization to avoid thick snow when AREA
577       is initilized with small values - does not change lab_sea results.
578     - added HsnowFile initialization capability
579    o pkg/smooth: addition to model/src and pkg/ctrl so allow
580     initialization of pkg/smooth and application to control vector
581    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
582    o dependencies: pkg/profiles requires pkg/cal
583    o pkg/profiles:
584     - added option ALLOW_PROFILES_GENERICGRID
585         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
586         that interpolation information (grid points and coefficients) is provided
587         within the netcdf input files.
588         -> sample matlab scripts can be found in MITgcm_contrib/gael
589         that allow you to prepare netcdf input files.
590     - also modified: cleaner include statements, cleaner error print statements,
591       cleaner stops when error, and more tests of the netcdf input files consistency.
592    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
593    o pkg/seaice:
594     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
595       requires a new routine: seaice_diagnostics_fill.F
596     - make sure that seaice does not move if not forced (pressure replacement
597       method, Hibler and Ip, 1995), changes results
598     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
599     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
600       It is turned off by default (=-1.), because it changes the results.
601     - make it possible to read AREA from a file, too.
602    
603    checkpoint59c
604    o add S/R and diagnostics for oceanic mixed-layer depth
605    o move GMRedi call after all vertical mixing schemes (including KPP)
606    o pkg/thsice:
607     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
608      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
609    o pkg/obcs:
610     - bug fix for balance code
611    o pkg/seaice:
612      - allow values of SEAICE_elasticParm > 1
613      - add new parameter SEAICE_evpTauRelax as an alternative
614        to SEAICE_elasticParm
615      - make lsr boundary conditions free slip (by default), changes result
616      - add code for no slip boundary conditions for lsr
617      - set minimum of zeta to zero (and not 4e8) (changes results)
618      - add a cap on AREA after advecting AREA if seaice_growth is not called
619    o change calculation of Visbeck K:
620      - no longer depend on tapering scheme; instead, compute slope (limited
621        by GM_maxSlope). this is equivalent to what was comuted before with
622        clipping or linear tappering.
623      - fix vertical averaging (wrong by 1/2 level)
624      - leave the old version (but will not be maintained) within
625        #ifdef OLD_VISBECK_CALC / #endif
626      - update output of exp. ideal_2D_oce
627    o change error catch in calc_r_star to improve vectorization
628    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
629      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
630    o adjoint:
631      Re-organized adjoint checkpointing according to Matt Mazloff
632      (but with modifs/completions/cleanups)
633      Storing is now bundled into large arrays to optimized I/O
634      (and second step in cleanup of the_main_loop)
635    
636    checkpoint59b
637    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
638      - export/import (between ocean & coupler) fields needed for ocean DIC.
639    o pkg/seaice:
640      - get rid of three more exchanges seaice_calc_viscosities (required
641        different loop boundaries in seaice_lsr and seaice_ocean_stress)
642      - bug fix in seaice_ocean_stress (update of lab_sea required)
643      - reduce loop boundaries to necessary minimum also in seaice_evp
644      - go back to the old way of computing deltaC/Z as the adjoint likes that
645        better
646    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
647      passive tracer to an Age Tracer) + update output.txt
648    o pkg/exf:
649      - implement A-grid / C-grid selection for wind-stress input files.
650      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
651      for now, in exf_bulk_largeyeager04.F only :
652      - change implementation for case where windspeed + 2. components wind-stress
653        are read-in. AND use rhoConstFresh to convert evap.
654    o pkg/seaice:
655      - use correct EXCH_UV for wind-forcing (on A-grid).
656      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
657        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
658    o pkg/exf:
659      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
660      EXF_INTERPOLATION:
661      - merge global_with_exf/code version of exf_interp_read.F
662        to the main code ;
663      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
664        reading the file ; Important: This options needs to be defined to recover
665        previous code.
666        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
667      - no longer loose real*8 precision along the way when using exf_iprec=64.
668    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
669      - change discretisation of evp-solver in order to avoid another exchange
670        (changes lab_sea) and clean up a little
671      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
672        help the adjoint (this also changes the results slightly)
673      - add a few "_d 0" where they had been missing in seaice_evp.F
674      - cleaning up: remove unused seaice_calc_rhs.F
675    o pkg/exf: some cleaning-up:
676      - change various "constants" into runtime parameters
677      - cleaned-up Large&Yeager04 routine which should eventually
678        replace exf_bulkformulae.F (changed names of S/R and CPP)
679        and merged various ALLOW_ATM_WIND options
680     only used with thsice pkg (in thsice_get_exf.F):
681      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
682        which are used when useStabilityFct_overIce=TRUE (= the default)
683      - change default values of ice & snow emissivity and scale downward LW
684        by ice & snow emissivity.
685    o pkg/thsice:
686     fix few little problems, in thsice_calc_thickn.F:
687      - growth vertically (and not laterally) if iceFrac == iceMaskMax
688      - melt only laterally if hIce < hThinIce (as the comments say)
689      and in thsice_extend.F:
690      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
691      - start to form ice as soon as the minimum ice-volume is reachable.
692     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
693      and cpl_aim+ocn
694    o pkg/kpp
695     - move computation of surface related input fields to KPP into a new
696       subroutine kpp_forcing_surf.F
697     - remove wrong (within bi,bj loops) EXCH calls.
698     - little cleaning (add argument myThid in last position, cvs header ...)
699     - for now, fix conservation problem by exchanging KPPviscAz (may not
700       be the best fix)
701    o pkg/seaice
702     - check for inconsistent evp parameter/cpp-flag combination
703     - remove leftover errIO flat for obsolete name list error handling
704    o OpenAD
705     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
706    
707    checkpoint59a
708    o pkg/seaice: some parameter clarifications and a little bit of clean up
709    o pkg/thsice: rename run-time parameters:
710       himin       -> hIceMin
711       himin0      -> hThinIce
712       hihig       -> hThickIce
713       i0          -> i0swFrac
714       transCoef   -> bMeltCoef
715       frac_energy -> fracMelting
716      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
717       with default values (for now) that do not change the results.
718      remove old version of thsice vars advection in pkg/seaice.
719    o in FFIELDS.h:
720      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
721      - make pLoad & sIceLoad always available (but still only used if
722         ATMOSPHERIC_LOADING is #define).
723    o pkg/kpp: replaced _KPP_RL with _RL
724    o bug fixes for vertical diffusivity computations when both KPP and
725        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
726        are no longer updating the vertical diffusivity array
727        (passed as argument) but are (re-) setting those arrays.
728    o pkg/seaice: fix bug in evp solver, while doing that
729      - change (improve?) discretization of stress computations for both
730        cgrid-lsr and evp solver
731      - add a new routine to compute strain rates
732      - the above changes lab_sea results
733      - add no slip conditions for evp solver (off by default), lsr-version
734        may follow
735      - fix exchange for shear at Z-points (does not change lab_sea)
736      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
737        (to force the user to pick a time step since there is not "safe" way
738        of choosing it)
739      - add principal stress diagnostics
740      - rearrange fields for evp a little to avoid having to call a: too many
741        exchanges and b: exchanges for stress trensor components which we do
742        not have.
743      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
744        of evp, complete rewrite for lsr case (latter is does not yet work
745        in all cases)
746    o pkg/kpp: add code to have mixing in shelf ice caverns
747      - add myThid to all kpp routines (long overdue)
748    
749    checkpoint59
750    o pkg/exf:
751      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
752        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
753      - move exf header files from lower_case.h to UPPER_CASE.h ;
754        add missing cvs Header & Name
755      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
756      - add namelist param. selectStressGridPosition, exf_monFreq
757      - retire many _CLIM routines, and remove data.exf_clim
758        + params moved to data.exf
759        + climsst, climsss now handled by exf_set_gen, i.e.
760          climss?period=0 refers to constant field,
761          climss?period=-12 to monthly forcing
762      - split up namelists in data.exf
763    o pkg/seaice:
764      - remove seaice_exch and seaice_exch_uv
765      - remove superfluous exchange of theta
766      - add myThid to seaice_budget_ocean/ice
767      - add new interface for atmospheric wind forcing (C-grid only)
768        + new routine
769        + two new field (taux, tauy for stress over ice)
770        + removed one global field (DAIRN) for C-grid case only
771    o pkg/thsise
772      - 2nd set of modifs for thsice adjoint in conjunction with exf
773    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
774    
775    checkpoint58y_post
776    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
777      vertical diffusivity, similar to that in MOM4; turned on using
778      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
779      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
780    o Added capability for 3D specification of background vertical diffusion
781      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
782      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
783      "data" file that contains the 3D vertical diffusivity coefficients.
784    o ice dynamics (pkg/seaice) with thsice thermodynamics:
785      - add code within pkg thsice to advect & diffuse sea-ice fields
786      similar to (and will replace) what has been added in  seaice_advdiff.F,
787      but: - conserving Mass, Heat & Salt.
788           - better when using non-linear advection scheme (not yet fully tested)
789           - can also be used in atmospheric set-up (for now, only the diffusion).
790    
791    checkpoint58x_post
792    o IO option for global-file compact format:
793      - add options when generating topology (utils/exch2/matlab-topology-generator)
794      - add I/O capability (pkg/mdsio).
795      - adapt utils/matlab/rdmds.m to read this format.
796      for now long-line format not yet supported by pkg/mdsio (& exch2).
797    o shelfice: add a few diagnostics
798    
799    checkpoint58w_post
800    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
801      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
802      (and replace horiVertRatio in NH code).
803      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
804                         and tutorial_plume_on_slope (sensitive to truncation)
805    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
806      directly to drive seaice model (C-grid only)
807    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
808     - reintroduce computation of wind from stress,
809     - compute tau (in exf_bulkformulae.F) from windstress averaged to
810       mass points to avoid tau = 0
811     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
812    o rdmnc.m: make it work with "global" files created with gluemnc
813    o rdmnc.m : some improvements in dealing with singleton dimension
814      (tested on all testreport mnc output files).
815    o genmake2: disable pkg/profiles if netcdf test fails.
816    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
817    o move call to cal_readparms up to make calendar parameters/variable available
818      to all packages
819    
820    checkpoint58v_post
821    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
822      useDynP_inEos_Zc tested.
823    o pkg/exf: changes to properly interpolate/mask/scale initial fields
824    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
825      and portions thereof.  See read_cs.txt for description and examples.
826    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
827      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
828      following the great-circle arc between those 2 points.
829    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
830      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
831    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
832     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
833     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
834     - still needs work (not working with some options ; efficiency to improve)
835       and serious testing.
836     - use this scheme for temperature & salinity in 2 advection test exp.:
837       advect_xy & advect_xz, respectively.
838    
839    checkpoint58u_post
840    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
841    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
842    o testreport: add option "-skipdir" to skip some test.
843    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
844      momentum calculation.
845    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
846    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
847      remove checkpoint.F and the_correction_step.F (no longer used);
848      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
849    o add option (linFSConserveTr) to correct for tracer source/sink due to
850      Linear Free surface
851    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
852    o pkg/thsice: fix reading mnc-pickups
853    
854    checkpoint58t_post
855    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
856    o pkg/mdsio:
857     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
858       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
859       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
860     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
861     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
862       either MDS_READ_FIELD or MDS_WRITE_FIELD )
863     - new S/R (to replace MDSWRITEMETA), which allows to write more
864       informations (variable names, time ...) to meta files.
865     - modify rdmds.m to give back the meta file content.
866    o pkg/diagnostics: change vertical interpolation to be safer, and more
867       flexible (define p-levels to interpolate to in data.diagnostics);
868      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
869       diagnostic pointer.
870    o pkg/seaice: more cleaning up of seaice_growth, added many comments
871    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
872    o fix multi-category seaice:
873     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
874       SEAICE_MULTICATEGORY
875     - fix short wave heat flux
876    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
877       and allow to use EVP solver. Change forward lab_sea: test both EVP
878       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
879    o Initial check-in of lab_sea adjoint
880      (very similar to natl_box_adjoint/code_seaice)
881      * used C-grid and EVP solver
882      * used KPP, GM/Redi
883      * uses inAdExact=.TRUE.
884      * gradient checks fail for both ADM and TLM
885        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
886        f.d. gradients actually seem more problematic than ADM, TLM gradients;
887        issue is related to forward mismatch between g77 an ifort
888    o pkg/seaice: overhaul of thermodynamics
889     - growth.F and groatb.F are replaced by new routine seaice_growth.F
890     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
891     - move a few global fields out of SEAICE.h into seaice_growth.F and
892       make them 2D (FICE/QNETO/ ...)
893     - remove FO (it is the same as QNETO)
894     - introduce a few local fields to avoid modifying external fields such
895       as atemp, etc.
896    
897    checkpoint58s_post
898    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
899      changed exf_set_gen.F so that
900        genperiod=0 means input file is one time-constant field and
901        genperiod=-12 means input file contains 12 monthly means
902    o CG2D: use pre-computed solver main-diagonal (stored in common block);
903      this affects truncation error ; generate new output file for exp. which
904      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
905        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
906        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
907        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
908        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
909        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
910    o start implementation of deep-atmosphere and anelastic formulation
911    o verification: remove 2nd copy of input files and use script "prepare_run"
912      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
913    o mom_common/vecinv/fluxform: fix a few initialisation isssues
914    o profiles: fix for multithreaded case
915    
916    o diagnostics: rename few diags:
917      s/'PRESSURE'/'RCENTER '/g
918      s/'TICE    '/'oceFreez'/g
919      s/'TAUX    '/'oceTAUX '/g
920      s/'TAUY    '/'oceTAUY '/g
921      s/'SWFLUX  '/'oceQsw  '/g
922      s/DIFx/DFxE/g
923      s/DIFy/DFyE/g
924      and add few ocean-forcing diagnostics:
925      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
926    o modifications to pkg/seaice/growth.F and budget.F, which change results of
927      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
928      as actual snow thickness.  It now refers everywhere to effective snow
929      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
930    
931    checkpoint58r_post
932    o modifications to pkg/seaice/growth.F, which change results of
933      lab_sea experiment: fixes pertain to melting snow over open water, to
934      masking EVAP under sea ice, and to using the correct AREA variable for
935      computations of EVAP, PRECIP, HSNOW, and GHEFF
936    o add ability to read bathy, salt, and theta using MNC (off by def)
937    o add flooding algorithm and advection of HSNOW for pkg/seaice;
938      both are turned off by default and do no change any results
939    o seaice advection with pkg/thsice: a step toward the use of non-linear
940      advection scheme, but #ifdef or commented out for now (requires more EXCH).
941    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
942      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
943      in natl_box (affects results @ truncation level: update output.txt)
944    o multi-threading and IO:
945      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
946      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
947        (needed to work with SingleCpuIO): tested in all verif. exp.
948    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
949      affects the results (but none of the verification test uses this scheme).
950    o Adding some pkg/diagnostics capability to pkg/seaice
951      (will certainly be subject to changes)
952    o ctrl: adding new control variables:
953      lwflux, lwdown, evap, snowprecip, apressure, runoff
954    
955    checkpoint58q_post
956    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
957      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
958      high_res_cube configuration by 4% on Columbia.
959    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
960      add (in global_with_exf/code) a version of EXF_INTERP_READ without
961      dynamical allocation (seems to work in multi-threaded).
962    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
963      single CPU io) so that TAF does not have to see EESUPPORT.h
964    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
965    
966    checkpoint58p_post
967    o obcs: stop if obcs is used with useCDscheme = .true.
968    o shelfice:
969     - fix a sign error so that no slip at shelfice interface works
970     - remove stop for combination non-hydrostatic code and shelfice. That does
971       not mean, that the results are correct, but at least they are numerically
972       stable
973    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
974    o added adjoint exch routined for all exch*3d* routines
975      and updated flow directives
976    
977    checkpoint58o_post
978    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
979      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
980    o change controling S/R for writing pickup file (new S/R do_write_pickup)
981      and clean-up reading/writing of pickup files.
982    o fix local version of read/write pickup (NH part) in rotating_tank/code
983    o simplify EXCH interface:
984     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
985     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
986    o added the regrid package
987    o shelfice:
988     - add a simple boundary layer scheme to reduce noise
989     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
990    
991    checkpoint58n_post
992    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
993       local variable (not in common block).
994    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
995      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
996      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
997        to work with SingleCpuIO.
998    o add "_d 0" to real constant of pkg/cfc subroutines ;
999       update exp. cfc_exemple & tutorial_cfc_offline output files.
1000    o multi-threading and IO:
1001      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
1002        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
1003      - barrier before and after reading.
1004      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
1005      - avoid using MDS_WRITELOCAL for LAND pkg output.
1006      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
1007        common-block variables ; Allows multi-threading with master-thread IO.
1008    o change default MAX_NO_THREADS from 32 to 4 ;
1009      and stop cleanly when MAX_NO_THREADS is too small.
1010    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
1011    
1012    checkpoint58m_post
1013    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
1014       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
1015    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
1016       keep global_ocean.90x40x15 (for AD testing) with former secondary test
1017       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
1018    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
1019        add MITgcm_tutorials (= code + all the tutorials)
1020    o ecco, option to compute cost for total ssh (mean+anom)
1021    o consistent with addition of ptracer and ssh in pkg/profiles
1022    o profiles: adding ptracer and ssh
1023    o testreport: change multi-test output-file name
1024      (from output.txt.{name} to output.{name}.txt)
1025    o profiles: now ok for mutli-tiles case
1026    o seaice: add 4 parameters for different advection schemes for area,
1027      (effective) seaice thickness, enthalphy, and snow height. Their default
1028      is the standard parameter SEAICEadvScheme
1029    o calc_gw:
1030     - add cosFacU in zonal viscous flux (harmonic.visc.).
1031     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
1032       of tutorial_plume_on_slope.
1033    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
1034    o calc_gw: true flux-form, account for horizontal grid spacing.
1035      update rotating_tank results, but not plume_on_slope (affected at
1036      truncation level, 11 digits).
1037    
1038    checkpoint58l_post
1039    o calc_gw:
1040     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
1041     - remove side-drag for now (need to fix it); update plume_on_slope results.
1042     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
1043    o commit code to make SST/SSS weights spatially variable
1044      (based on either variable in-situ or variable initial T/S weights)
1045    o pkg/ecco:
1046      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
1047        now based on horizontally varying weights wthetaLev, wsaltLev
1048      * cost_averagesflags now returns year indices in addition to day, month
1049      * sflux balance is performed on annual basis
1050        (sflxumm, sfluxmm2, bal_sfluxmm)
1051      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
1052        including separate counting and multipliers
1053    o pkg/rbcs
1054      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
1055    
1056    checkpoint58k_post
1057    o testreport:
1058     - always build in dir. "build" (if not there, mkdir build instead of building
1059       & running in input)
1060     - run in dir run (if it exists), in build otherwise.
1061     - call prepare_run (if input/prepare_run exists)
1062     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
1063    o pkg/exf modifications to interpolation and rotation routines for more
1064       reasonable treatment of North Pole singularity: for tracers North Pole
1065       value is set to northernmost zonal-mean value, for zonal velocity it is
1066       set to zero, and for meridional velocity it is set to northernmost value.
1067    o pkg/exf/exf_check_range.F
1068     - add tile index to diagnostics and move stop statement to the very
1069       end of the routine.
1070    o pkg/diagnostics: (diagnostics_main_init.F)
1071      define title of isomorphic variables according to the current config.
1072    o pkg/thsice with pkg/seaice dynamics:
1073    - fix domain of computation (interior only, required for exf) and do exchanges
1074    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
1075    o towards a standard way of dealing with multi-threading in MONITOR
1076      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
1077    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
1078       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
1079    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
1080    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
1081    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
1082       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
1083    o tracer advection:
1084     - clean-up and simplify calc_common_factors.F
1085     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
1086       advection subroutine (but still not used within DST advection S/R)
1087    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
1088    
1089    checkpoint58j_post
1090    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
1091      from file (collects calls previously in FORWARD_STEP)
1092    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
1093    o adjoint store dir. adjusted accordingly
1094    o genmake2
1095      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
1096    
1097    checkpoint58i_post
1098    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
1099      on wind stress (SEAICEstressFactor defaults to 1.)
1100    o Total number of Timers is finite (<=40): comment out 2 non-essential one
1101      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
1102    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
1103      on CS-grid: no longer loosing mass.
1104    o exf & curvilinear-grid: no longer modify longitude xC & xG.
1105    o pkg/ggl90: fix sloppy output and fix a bug
1106    o pkg/seaice: added SEAICEuseEVPpickup parameter
1107      - Set to false in order to start EVP solver with
1108        non-EVP pickup files when using SEAICEuseEVP
1109      - fix sign error in diffusion in seaice_calc_rhs
1110    
1111    checkpoint58h_post
1112    * Modifications for bottom topography control
1113      o replace hFacC by _hFacC at various places
1114      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
1115      o add non-self-adjoint cg2d_nsa
1116      o update autodiff support routines
1117      o re-initialise hfac after ctrl_depth_ini
1118      o works for 5x5 box, doesnt work for global_ocean.90x40x15
1119    * Adding verification for 5x5 box (4-layer) bottom topography control
1120    
1121    checkpoint58g_post
1122    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
1123       used for mean seasonal cycle, mean diurnal cycle); add an example
1124       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
1125    o pkg/ggl90:
1126      - add parameter (minimum surface kinetic energy)
1127      - fix bug (avoiding division by zero)
1128    o couple pkg/thsice to pkg/seaice:
1129      - modify advection in seaice to accomodate new scalar fields to be advected
1130      - only muliDimAdection scheme work with seaice/thsice
1131      - mapping of thsice-variables to seaice-variables, back and forth
1132      - does not break the verification experiments, but does not give the
1133        desired results either
1134    o pkg/seaice
1135      - make (default) second order advection a bit less confusing?
1136    
1137    checkpoint58f_post
1138    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
1139      to pkg/seaice):
1140      - new routines thsice_map_exf and thsice_get_exf provide the interface
1141      - add an additional formal parameter to thsice_solve4temp
1142    o pkg/exf:
1143      - add new fields wspeed, snowprecip (to be able to couple to thsice)
1144      - correct Stefan-Boltzmann constant
1145      - new parameter for longwave surface emittance
1146      - separate some stuff from exf_bulkformulae into new routines  
1147        exf_radiation, exf_wind
1148      - add new parameters and constants: longwave emissivity for ocean, ice
1149        and snow, evaporation parameters over ice
1150      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
1151        either wind from stress or stress from wind
1152    o pkg/thSIce:
1153    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
1154    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
1155       and THSICE_CALC_THICKN
1156    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
1157    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
1158      to make debugging easier.
1159    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
1160    o pkg/bulk_force:
1161      - clean-up comments and parameters ;
1162      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
1163    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
1164      generate new output for test-experiment: aim.5l_cs.thSI
1165    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
1166      testreport accordingly
1167    
1168    checkpoint58e_post
1169    o SEAICE_CGRID adjoint done
1170    o R_STAR adjoint implemented.
1171      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
1172      * need to sort out init. of h0facc, etc.
1173    o Make pkg/profile fully independent of ecco,cost, etc. stuff
1174      to be able to use it in pure forward.
1175    
1176    checkpoint58d_post
1177    o upgrade simple test-experiment to tutorial example:
1178     step.1: duplicate the experiment and (step.2) will remove the old copy.
1179      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
1180      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
1181      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
1182      tutorial_global_oce_biogeo    <- copy of dic_example
1183      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
1184      tutorial_plume_on_slope       <- copy of plume_on_slope
1185      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
1186      tutorial_global_oce_optim     <- empty for now (David ?)
1187      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
1188     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
1189    o correct a sign problem in cost_scat.F
1190    o obcs and ptracers: fix boundary conditions for advections schemes
1191      with larger stencil
1192    o thsice adjoint: start
1193    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
1194      completeness
1195    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
1196      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
1197    o ptracers adjoint:
1198      * avoid extensive recomputatations
1199      * fix missing re-init. of gptr (missed by TAF)
1200    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
1201      me to turn off the excessive output to STDOUT that this package produces
1202    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
1203      and add those terms in Vector-Invariant formulation.
1204    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
1205      if the control period (xx_hfluxperiod etc) is 0
1206    o in profiles pkg, clean routines and fix details
1207    o in ecco pkg, reading ssh data:
1208      fix problem in case the model does not start at iter0=0
1209    o fix mnc-pickup/restart for ptracers
1210    o new package prifiles:
1211      code to compute profile-based cost by Gael Forget
1212      (modifs in ecco, ctrl, autodiff)
1213    o Benign bug fix in initialization (spotted by M. Mazloff) of
1214      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
1215    
1216    checkpoint58c_post
1217    o adjoint: finish NLFS adjoint and provide reference output in
1218      verification/global_ocean.90x40x15/results_ad_nlfs
1219    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
1220      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
1221      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
1222      with SEAICE_CGRID defined.
1223    o move calendarDumps from "data" to "data.cal" and clean-up the code
1224      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
1225    o add useEXF & useCAL flags (for now, set in hard-coded way)
1226    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
1227      (were missing in NH mode, and wrong in quasihydrostatic mode).
1228      waiting for Chris updated version of calc_gw to add those CALLs.
1229    o fix bug in quasihydrostatic S/R ;
1230      add a test for this option: global_ocean.90x40x15.qshyd
1231    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
1232      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
1233    o add on/off flag useOffLine for package OFFLINE
1234    o seaice:
1235      - modify advection so that it works also on the C-grid
1236      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
1237        problem in multi-tile runs with C-grid
1238      - add flags for clipping ice velocities and/or masking solver forcing
1239      - fix drag (ocean on ice) formulation and a bug that caused noise in the
1240        C-grid solver
1241      - added a few comments to seaice_diffusion.F
1242      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
1243        are now exclusive)
1244      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
1245        required re-ordering the code a little:
1246       + make DAIRN global variable (defined in SEAICE)
1247       + move computation of the viscosities eta and zeta into a new separate
1248         routine (because I need to recompute them in seaice_ocean_stress.F)
1249    
1250    checkpoint58b_post
1251    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
1252      update output.txt of exp. aim.5l_cs.thSI
1253    o various mnc cleanups and improvements:
1254      + shrink lookup tables by factor of ~4
1255      + better error reporting when running out of lookup space
1256      + able to handle longer path/file names (up to 500 chars)
1257    o adjoint:
1258      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
1259      - TBD: "hidden" mom_vecinv recomp. in dynamics
1260    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
1261     (allow to differentiate between forcing components using new integer flags:
1262      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
1263     and add new flag to put Dissipation tendency out of Adams-Bashforth.
1264    o ecco
1265      - enable trend removal from SSH anomaly obs.
1266    o adjoint
1267      - a fix for PmEpR when #undef EXACT_CONSERV
1268      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
1269      - try to fix "hidden" recomp. in forward_step for NLFS
1270        (NLFS seems broken sometimes after I checked it in)
1271    o seaice:
1272     - add c-grid version of the dynamic solver:
1273       + three new routines that are the c-grid substitute lsr, dynsolver
1274         and ostres
1275       + put a few fields that were local to dynsolver into global common
1276         blocks, so that I can move the computation of stresses etc into
1277         seaice_lsr (saves coding but may break the adjoint).
1278     - replace more hardwired parameters by runtime parameters
1279     - add ice masks that mask the rhs of the implicit solvers where there
1280       is no ice (commented out in seaice_dynsolver, because i am not sure
1281       if this works properly), eventually this should replace the clipping
1282       of ice velocities in seaice_dynsolver to +/-40cm/s.
1283    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
1284      include it only where its needed
1285    o move balancing of fluxes before the call of external_forcing_surf
1286    o seaice:
1287      - correct units of turning angles (now they are really in degrees)
1288      - move computation of GWATX/Y out of main routine into dynsolver
1289      - initialize GWATX/Y in seaice_init
1290    o Apply mask on Fresh-Water flux (needed for SSH forcing).
1291      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
1292    o seaice: add runtime flags for turning angles (default to zero)
1293    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
1294      and trend from exf forcing and ctrl control adjustments
1295    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
1296      (since checkpoint57x_post)
1297    o change the default rotation period to 86164.s = the Earth rotation
1298    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
1299      and based on a reference stratification. Tested within hs94.cs-32x32x5.
1300    o seaice advection: add code for choosing between the default (2nd order
1301      central differences) and multiDim advection schemes provided by
1302      pkg/generic_advdiff
1303    o seaice:
1304      - removed all references to SEAICE_GRID.h fields from
1305        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
1306        (cubed-sphere configuration will change a little)
1307      - grid computations in seaice_init are obsolete now.
1308      - cleaned up code a little so that is easier to read (hopefully).
1309      - added new (better?) discretizations of default advection and diffusion
1310        (turn on with SEAICEuseFluxForm)
1311      - replace 1 in 3d global fields by kSurface in growth.F
1312      
1313    checkpoint58a_post
1314    o seaice:
1315      - bug fix in advect.F
1316    o shelfice:
1317      - separate shelfice load anomaly from pload (breaks with time
1318        dependent forcing), => introduce constant field shelficeLoadAnomaly.
1319        Its default is 0., but it may be computed more cleverly from (unknown)
1320        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
1321        done offline. A good approximation of the pressure load anomaly is
1322        necessary to avoid large initial adjustment processes underneath
1323        deep-reaching shelfice.
1324      - small fix in ISOMIP shelfice_thermodynamics
1325      - add more sophisticated thermodynamics of Hellmer (1989), this is
1326        now the default
1327      - give a few constants more intuitive names
1328    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
1329      if bulk formulae are used in long integration (especially EmPmR). Turn
1330      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
1331      if balancePrintMean, the imbalance that is substracted is printed to
1332      STDOUT.
1333    o fix bug (typo) in obcs_apply_eta.F
1334    o add a new package shelfice which enables us to model the circulation
1335      underneath shelf-ice with draughts of hundreds of meters.
1336     - works
1337     - to do: + include improved thermodynamics
1338              + check whether kSurfC (from model/inc/SURFACE.h) can be used
1339                instead of new field kTopC
1340              + can we use topoFile, Ro_surf and existing code in ini_depth.F
1341                instead of new field R_shelfIce and new code in ini_depth.F
1342                and ini_mask_etc.F?
1343              + adjust vertical mixing schemes?
1344    o seaice pkg:
1345     - add a cpp-flag to include a simple formula for a salinity dependent
1346       freezing point of sea water at the surface
1347     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
1348       meridional stresses are now different (and hopefully correct)
1349    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
1350       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
1351       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
1352    o pkg/diagnostics: add options and parameters for regional-statistics
1353       diagnostics ; define regions by reading a region-mask from a file
1354       (might add other options later)
1355    o pkg/bulk_force:
1356     - add option and parameters to use AIM surface-flux formulae.
1357     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
1358       others forcing fields (defined in PARM05, parameter file "data") are loaded
1359       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
1360     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
1361     - use the right EXCH call for uwind,vwind (to work on CS-grid).
1362     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
1363       and parameters (note: calcWindStress replaces .NOT.readwindstress).
1364     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
1365    
1366    checkpoint58
1367    o add "--embed-source" option to genmake2 which, when the supporting
1368      tools can be compiled (as determined by genmake2) will turn on the
1369      embed_files package which then embeds the entire MITgcm source code
1370      (*.[fFhc] + Makefile) used for the build within the executable
1371      - requested by CNH but off by default
1372      - adds a paltry <9MB to the mitgcmuv executable in most cases
1373      - only writes the output when useEMBEDSRC in eedata is true
1374    o clean up 3-dim. relaxation codes:
1375      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
1376      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
1377      * Thanks to Tom Haine for testing!
1378    
1379    checkpoint57z_post
1380    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
1381      affects output (@ truncation level) of exp. plume_on_slope ; updated.
1382    o fix the pickup behavior for obcs in combination with ptracers
1383    o fix a bug in ptracers_external_fields_load
1384    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
1385      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
1386    o transfered surface NH pressure to eta field (if exactConserv).
1387    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
1388         and update lab_sea output.txt file.
1389    o completing 3-dim. relaxation code: additional term
1390         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
1391      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
1392      * At compile time, in "EXF_OPTIONS.h" set
1393          #define  ALLOW_CLIMTEMP_RELAXATION
1394          #define  ALLOW_CLIMSALT_RELAXATION
1395      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
1396          tauThetaClimRelax3Dim = 15552000.0,
1397          tauSaltClimRelax3Dim  = 15552000.0,
1398      * 3 cases:
1399          1) Use a constant-in-time 3-dim. field
1400          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
1401          3) Real-time relax. to time-evolving prescribed field
1402    o Adding Laplacian-type smoothness constraint on
1403      initial and boundary (forcing) controls (ic, bc)
1404      * enable at compile-time via
1405        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
1406      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
1407      * Absolute scale somewhat unclear so far
1408      * no area weighting was included since no other cost term does so far
1409    
1410    checkpoint57y_post
1411    First step for a NLFS adjoint
1412    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
1413    o new init. routines for calc_r_star, calc_surf_dr
1414    o still need to deal with ini_masks_etc
1415    o testreport seemed happy
1416    checkpoint57y_pre
1417    
1418    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
1419    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
1420    o add new offset feature to offline pkg (plus minor cleanup)
1421    o cfc fixes for final year of integration
1422    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
1423      be in GCHEM_OPTIONS).
1424    
1425    checkpoint57x_post
1426    o fix testreport Pb in multiple test experiment.
1427    o cleanup our namelist syntax in verification:
1428      - make it more F95 standards compliant (some work still needed)
1429      - allows the vast majority of our tests to work with gfortran
1430    o Non-Hydrostatic:
1431     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
1432     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
1433    o Allow to apply AB on T,S rather than on AB(gT,gS):
1434     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
1435     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
1436       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
1437     - need a "clever" read_pickup to restart from the other AB formulation
1438    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
1439    o remove some unused variables (reduces number of compiler warnings)
1440    o adjoint
1441      * Disable useVariableViscosity for adjoint for time being
1442        (there are a number of extensive recomputations)
1443      * Initialize certain variables needed for adjoint
1444    
1445    checkpoint57w_post
1446    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
1447                 fix the singleCpuIO RS version of MDSWRITEFIELD
1448       and add a WARNING if using globalFiles=T with multi-processors.
1449    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
1450      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
1451    o tracer advection scheme:
1452      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
1453       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
1454       was not very convenient).
1455      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
1456       (further tests needed for the implicit DST & Flux-Limiter schemes).
1457    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
1458      and sRef for convenience, handy, when you want to initialize
1459      ptracers in a large domain with a constant non-zero value. Also,
1460      untangle ptracers_init.F a little.
1461    
1462    checkpoint57v_post
1463    o change dome exp. to use variable viscosity in side-drag terms.
1464    o remove all the files from the cfc_offline test since they are now
1465      incorporated into tutorial_cfc_offline which has been producing
1466      identical results for a few days of testing
1467    o add new parameter: sideDragFactor to enable half-slip-side BC
1468      and change side-drag S/R to use viscosity from mom_calc_visc
1469      (can switch back by setting sideDragFactor=0.); affects results at
1470      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
1471       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
1472    o vorticity & strain are now computed without masking, to account for
1473      no-slip-side BC in variable viscosity calculation ; mask is applied
1474      anyway later on, before computing advection/coriolis terms.
1475    o modify exp4 to test new obcs support for reading from external files
1476      and for passive tracers
1477    o fix behavior of ptracers_monitor when monitor output is written to a
1478      netcdf-file; still not independent of monitor.F (writes in the same
1479      file).
1480    o change default value of tRef (put a uniform, meaningful value for ocean
1481      & atmos) and initialize sRef (was missing, as Martin mentioned).
1482    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
1483      to be proportional to enstrophy dissipation length.  Thus,
1484       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
1485      This is now consistent with Smagorinsky and with the manual.
1486    
1487    checkpoint57u_post
1488    o OBCS and PTRACERS: add open boundary support for passive tracers
1489      - either use homogenous (pseudo) v.Neumann conditions or prescribe
1490        OB-values from file; this is not different from the way theta and salinity
1491        are treated
1492      - however, Orlanski-radiation conditions are not supported, and the model
1493        will stop if you use pTracers and Orlanski at the same time.
1494      - beefed up the rountine obcs_external_fields_load: now only those open
1495        boundary values are overwritten with values from files for which there
1496        are really files, otherwise the OB-fields remain untouched. This makes
1497        it possible to use different OBs at different ends of the domain (as
1498        with EXF)
1499    o reduce number of exch calls in shap_filt (s2).
1500    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
1501      truncation level) 4/5 MLAdjust test results (11&12 digits match).
1502    
1503    checkpoint57t_post
1504    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
1505    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
1506      same truncation, independent of the face number: affects affects several
1507      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
1508    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
1509      note that biharmonic viscosity + no-slip was not tested in any experiment.
1510    o fix bug in non-linear free-surf side-drag ; generate new output for
1511      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
1512    o make mnc honor the writeBinaryPrec flag for most kinds of output
1513    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
1514    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
1515      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
1516    o add brackets in multi-terms sum to get same truncation, independent of
1517      the face number (manage to get exactly same value of gU,gV at the cs-edge)
1518      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
1519    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
1520      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
1521      a maximum grid-scale Reynolds number.  Also, changes all length calculations
1522      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
1523      Suggested values of viscosity parameters found in mom_calc_visc.
1524      Many new viscosity diagnostics available.
1525    
1526    checkpoint57s_post
1527    o Add clearing-house for viscosity calculations, mom_calc_visc and
1528      correct numerous bugs in LeithD and Smagorinsky discretizations.  
1529      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
1530      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
1531      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
1532      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
1533      The Strain-Tension form is now called with useStrainTensonVisc=.true.
1534      ViscAhStrain and viscAhTension are now retired.
1535    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
1536    o In response to JMC's bug report, genmake2 now ignores any soft-links
1537      that it finds in the *current* directory when searching for files.
1538      Soft-links found in any other source directories will still work as
1539      they did before.
1540    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
1541      a C routine to unlimit the stack size
1542    o mnc-ify pkg/aim snapshot vars
1543    o mnc-ify pkg/land as requested by Daniel
1544    o various changes to mnc including:
1545      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
1546      - output can now be grouped so that all files within a group
1547          change the ITER portion of their names in lock-step together
1548      - can now read ("global") PER-FACE (in addition to PER-TILE) files
1549          and works with both EXCH1 and EXCH2 (but needs more testing)
1550      - writing works for all verification test cases w/ g77 on Linux
1551    
1552    checkpoint57r_post
1553    o make MNC variable initialization happen earlier
1554    o add diagnostics for (almost) each term of the momentum Eq.
1555    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
1556    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
1557    o remove MINIMAL_TAVE_OUTPUT option ;
1558      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
1559    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
1560      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
1561    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
1562    o add time-dependent SST, SSS control
1563    o cost terms in ecco/ modularized (new cost_generic.F)
1564    o cost_averages routines are modularized (new cost_averagesgeneric.F)
1565    o new infrastructure for seaice model vs. obs misfits in seaice/
1566      * driver from the_main_loop.F is seaice_cost_driver.F
1567      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
1568      * gradient check in Exp. 6a of natl_box_adjoint/
1569    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
1570      (see README file)
1571    
1572    checkpoint57q_post
1573    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
1574    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
1575      - bug was reported by Jean-Michel and Ian Fenty
1576    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
1577      update exp. cpl_aim+ocn output.
1578    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
1579      Needed for high-res. runs with large global files
1580      to be able to limit tapelev size
1581    o Changed some tests for adjoint:
1582      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
1583      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
1584      * global_ocean.90x40x15/ back to default 3-level checkpointing
1585    o Modifications to enable scripted COMMON to MODULE conversion
1586      * verification/OpenAD/code/ has necessary scripts and description;
1587      * converts, compiles and runs successfully;
1588    
1589    checkpoint57p_post
1590    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
1591    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
1592      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
1593    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
1594    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
1595      (was already the case for dissipation with mom_vecinv,
1596       and also the case for grad.PhiHyd when staggered-timeStep)
1597      This will allow to put dissipation out-off the AB time-stepping.
1598     Unfortunately, affects truncation error. Update output of exp. that "fails"
1599      (cg2d matching number) and leave the others for later: front_relax(10),
1600      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
1601      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
1602    
1603    checkpoint57o_post
1604    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
1605      (2) its ready to be documented during the 20050801 DocFest
1606    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
1607      for ideal_2D_oce and lab_sea on linux_ia32_g77
1608    o set to #undef CTRL_SET_OLD_MAXCVARS_30
1609      in global1x1_tot/code_seaice_adj to access indices 32, 33
1610      (worth another tag)
1611    
1612    checkpoint57n_post
1613    o adding precip control xx_precip 32
1614    o adding swflux control xx_swflux 33
1615    o Replacing 10 forcing penalty cost routines by 1 generic.
1616    o Implementing partitioning in time-mean and variable adjustment
1617      for atmos. state.
1618    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
1619    o in natl_box_adjoint:
1620      * updated exp 1 to 10
1621        (but does not have time-mean vs. variable split results yet)
1622    o updated global1x1/*_seaice_adj/
1623      to incorporate latest changes
1624    o enable useSingleCpuIO for mdsio vector routines
1625      (applies in particular to tapelev I/O)
1626    o removed inefficient K-loop in all active_file*control*.F
1627    
1628    checkpoint57m_post
1629    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
1630      and advect_cs (use EXCH-2 and standard cs-32 grid files).
1631    o pkg/exch2: filling of face-corner halo regions is optional
1632      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
1633    
1634    checkpoint57l_post
1635     tag before updating tutorials (pre-release-2)
1636    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
1637       for output and interpolation of input fields onto model grid)
1638    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
1639       Affects results of exp. rotating_tank ; update output.txt.
1640    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
1641          and taking the square quantity and/or using a fraction-weight field.
1642    o fix aim_diagnostics_init.F mate numbers.
1643    o add mnc output capability to diagnostics/diagstat and update
1644      our cvsignore files for the ACSII output generated
1645    
1646    checkpoint57k_post
1647    o lab_sea now uses diagnostics package and provides a suite of
1648      new EXF diagnostics output.
1649    
1650    checkpoint57j_post
1651    o exf
1652      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
1653        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
1654        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
1655      * extended diagnostics output
1656        - now includes all EXF variables
1657        - hs, hl moved to common block
1658        - separate S/R for diagnostics, called after ctrl vector is added
1659        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
1660        - EXFqnet contains true Qnet (i.e. includes qsw)
1661      * updated verif. lab_sea, global_with_exf
1662      * Rearranging hflux (exf_mapfields -> exf_getforcing)
1663        to ensure that diagnostics sees a true EXFqnet
1664    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
1665    o diagnostics pkg: change pointers so that 1 diagnostic can be used
1666      several times with different frequencies.
1667    o mnc-ify the thsice package as requested by Daniel Enderton
1668      - the monitor--MNC output needs work
1669      - many attributes need to be added (most are currently blank)
1670    o mnc-ify theaim_v23 package as requested by Daniel Enderton
1671      - many attributes need to be added (most are currently blank)
1672    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
1673    o add Sadourny like discretization to the 4th.O vorticity advection scheme
1674    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
1675      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
1676         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
1677    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
1678     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
1679    
1680    checkpoint57i_post
1681    o Diagnostics package was changed: diagnostic allocation is now deactivated
1682      by setting an empty file name in the namelist (used to be by setting 0 frequency)
1683    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
1684      add 1rst Order upwind vertical Shear.
1685    o add a quick fix for A/B checkpointing in OFFLINE mode
1686    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
1687      end-run around the C/Fortran linking horror in eesup/src/timers.F
1688    o added pkg/runclock: allows user to terminate run based on wall clock
1689    o added non-hydrostatic scaling parameter: nh_am2
1690    o pkg/my82: futile attempt to make results compiler-independent by adding
1691      some "_d 0", etc. no effect.
1692    o for mnc output, fill the 'T' coordinate var with myTime and create a
1693      separate 'iter' variable for iteration count
1694    o pkg/diagnostics:
1695      add new capability: output of Global/Regional & per-level statistics ;
1696      tested against monitor output (including land & thSIce) on various exp.
1697    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
1698    
1699    checkpoint57h_done
1700      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
1701      data.diagnostics, data.gchem, data.ptracers) is done.
1702    
1703    o pkg/diagnostics: prepare for Global/Regional statistics.
1704      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
1705    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
1706      and rename it: DIFFERENT_MULTIPLE
1707    
1708    checkpoint57h_post
1709    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
1710    o pkg/diagnostics: change output frequency, now in seconds (instead
1711      of Nb of iterations). This requires to change data.diagnostics.
1712    checkpoint57h_pre
1713    
1714    o in mnc, let the user create the output dir if both mnc_outdir_date
1715      and mnc_outdir_num are false
1716    o add fflags() to pkg/diagnostics which allows one to specify, on a
1717      per-file basis, the file precision [default behavior is unchanged]
1718    o added diagnostics to pkg/kpp, including computation of mixed layer
1719      depth based on a temperature/density criterion
1720    o updated verification/natl_box to test the new pkg/kpp diagnostics
1721    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
1722    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
1723    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
1724      not mnc -- this mistake was found by JMC and is now corrected
1725    
1726    checkpoint57g_post
1727    o add Adams-Bashforth 3rd Order time stepping:
1728      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
1729      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
1730    checkpoint57g_pre
1731    
1732    o make lambda[Theta,Salt]ClimRelax spatially varying
1733      (default remains spatially uniform constant based on tau)
1734    o added new control variables
1735      * init. uVel, vVel, etanN
1736      * lambda[Theta,Salt]ClimRelax
1737    o separate masks used for ctrl_pack/unpack 'from write_grid' output
1738      (suggested by G. Forget)
1739    
1740    checkpoint57f_post
1741    o add parameter "baseTime" = model base time = time at iteration zero
1742      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
1743      account for baseTime shift
1744    o move Coriolis arrays from PARAMS.h to GRID.h
1745    checkpoint57f_pre
1746    
1747    o mnc-ifying the seaice package
1748    o introduced an alternative length scale calculation for use in the limiting
1749      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
1750    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
1751    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
1752      as well as grad(vort3).  Made it compatible with both approximate form
1753      for the cubed sphere and full form of these gradients.  Added flag
1754      useFullLeith to select between approximate and full form.  
1755    o add "d0" in getcon.F to reduce differences between compilers/platforms
1756      update output.txt of exp. fizhi-gridalt-hs
1757    o change port_rand funtion to allow to set the seed.
1758    o fix obscure MNC bug involving conversion between reals and integers
1759      - it caused no problems with certain (eg. gcc, ifc) compilers but the
1760        new version is now more standards-compliant
1761    o adjoint-related modifications
1762      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
1763      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
1764      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
1765    
1766    checkpoint57e_post
1767    o Adding eddy stress controls a la Ferreira et al.
1768    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
1769    
1770    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
1771      update output.txt of exp. fizhi-gridalt-hs
1772    o add more "Z" dimensions and associated coordinate vars to MNC
1773    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
1774    o parameter calendarDumps: when set, approximate months (30-31 days) and years
1775      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
1776      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
1777      months and years.  Requires pkg/cal.
1778    o diagnostics: add pickup functionality
1779      - off by default for backwards compatibility
1780      - current version only uses MDSIO -- MNC will be added
1781    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
1782    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
1783    
1784    checkpoint57d_post
1785    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
1786    o modify verification/ideal_2D_oce so that it tests the creation of mnc
1787      output from the diagnostics package
1788    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
1789    o make genmake2 more portable by using ".$FS" instead of ".f" for more
1790      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
1791    o add coordinate variables to the MNC output from the diagnostics package
1792    o change MNC-flags default value: true when useMNC=TRUE
1793    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
1794      the ability (off by default) to read the grid information using MNC
1795    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
1796    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
1797    o do snap-shot diagnostics at the middle of the time-interval (instead of
1798      at the end).
1799    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
1800      new test for AIM with thSIce + slab-ocean
1801    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
1802    o move state variable diagnostics to the beginning of the time step ;
1803      (note: still needs some work specially for snap-shot diagnostics)
1804      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
1805    
1806    checkpoint57c_post
1807    o Change testing option (-ieee) to get closer agreement between g77 & ifort
1808    o generate new output.txt files on faulks with g77 & the new -ieee option
1809    checkpoint57c_pre
1810    
1811    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
1812      update output.txt of exp. global_ocean.90x40x15
1813    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
1814      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
1815    o add saltFlux(+File) forcing capability with periodicExternalForcing
1816    o allow to use pkg diagnostics for GM-Redi & ThSIce output
1817    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
1818    o improvements for the MNC output from DIAGNOSTICS:
1819      - correct handling of the unlimitied dimension
1820      - all dims now have associated coordinate variables
1821      - variables located at U, V, and Corner ("Z") points are now written
1822        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
1823        *all* data points are output
1824    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
1825    o added pkg/seaice/seaice_monitor.F
1826    o mdsio_readfield.F can now read files visible only to master MPI process.
1827    o pkg/seaice: some test code for ice-modified ocean stress
1828    o exf_getffields interpolation defaults to bilinear for all scalar forcing
1829      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
1830      spurious negative numbers for precipitation and humidity.  Will cause
1831      some small numerical differences for integrations using pkg/exf/exf_interp.F.
1832    o pkg/ctrl/
1833      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
1834        May be enabled via doPackDiag
1835      *  introduce z-scaling of
1836         + gradient (doZscalePack) and
1837         + control (doZscaleUnpack)
1838    o pkg/mdsio/
1839      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
1840      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
1841    
1842    checkpoint57b_post
1843    o simplify options in diagnostics_fill arguments (remove weird combinations)
1844    o fix MNC coordinate variables so that they now contain per-face index
1845      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
1846      general, EXCH2 grids are only aligned to a "local" coordinate system
1847    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
1848    o Implement instantaneous output within pkg diagnostics:
1849      setting a negative frequency in data.diagnostics produces
1850     "snap-shot" output (as opposed to time-average if freq > 0)
1851    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
1852      NOTE: change ptracer diagnostics name: use 2 characters to work with
1853            more than 9 tracers. Add also diagnostics of advect & diffus flux.
1854    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
1855      becomes the coordinate variable for the 'T' dimension
1856    o add CF-style coordinate variables to MNC
1857      - just a first cut:  numbers are meaningless on the cubesphere and
1858        missing along the T axis but otherwise it works!
1859    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
1860    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
1861    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
1862      this is based directly on what the model compute, so that the content of
1863      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
1864    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
1865    o clean up build options files for SunOS, in particular
1866      - remove -traditional from xmakedepend
1867      - change -xarch=v9 to -xarch=native for f77
1868      - restore use of make (not gmake)
1869      - add CC=gcc if using g77
1870    o changes per discussion of AM, JMC, & EH3 today:
1871      - move redundant "grid" variables out of "state" -- in preparation of
1872        creating proper CF-style coordinate variables and in recognition
1873        that any/all grid variables can be easily copied (eg. w/NCO) from
1874        the grid files into any of the other NetCDF files
1875      - *always* output grid variables with MDSIO (this will eventually be
1876        changed)
1877      - output MNC grid file if useMNC is true
1878    o every instance of _END_MASTER() has been found and replaced with
1879      _END_MASTER( myThid ) in order to satisfy certain picky Sun
1880      preprocessors
1881    o re-arrange diagnostics pkg initialisation:
1882     - allow each package to extend the available diagnostics list
1883     - add some checking and fix small problems (multi-threaded, ...)
1884     - new S/R diagnostics_fill (replace fill_diagnostics):
1885       look through the short list of active diag. (instead of the long list)
1886       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
1887    
1888    checkpoint57a_post
1889    o this set of changes restores TAMC compatibility
1890      tested for global_ocean.90x40x15 adjoint on trough
1891      (what a pain)
1892    
1893    checkpoint57a_pre
1894    o some modifs in tools/build_options for sunos
1895    o call ctrl_pack for ctrl at end for optimcycle=0
1896    
1897    checkpoint57
1898    o add horizontal bi-harmonic viscosity for vertical velocity
1899      - new parameter viscA4W (defaults to viscA4)
1900      - affects only non-hydrostatic code
1901      - to be done: no-slip lateral boundary conditions
1902    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
1903    o implement Implicit Vertical advection for pTracers
1904    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
1905      (implemented also for implicit vertical diffusion & advection)
1906    o OBCS: extend application of tracer open boundary conditions
1907      to a strip beyond the boundary of width Olx/Oly
1908    o add call monitor to TAF set of required calls (flow directives)
1909      and include in natl_box_adjoint
1910    o untangle a few ifdefs related to cost, ctrl, autodiff
1911      untangel a few ALLOW_ECCO_OPTIMIZATION
1912    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
1913      (theta2, salt2 in ecco_cost_weights)
1914    
1915    checkpoint56c_post
1916    o OBCS as control variables
1917      - update ctrl_ad_diff.list, obcs_ad_diff.list
1918      - remove balance of obcs controls from default
1919      - fix index bug nobcs in ctrl_init
1920      - fix dummy fields filen in ctrl_pack
1921      - add dummy weights for obcs
1922    o lsopt: comment out fort.94 output
1923    o optim:
1924      - remove unnecessary header files
1925      - adjusted namelists
1926      - add xerbla.F to Makefile
1927    o exf:
1928      - multiple modifications of exf_check_range
1929      - unit change in exf_init_runoff from [m/year] to [m/s]
1930    o mdsio:
1931      - i/o-vector change debugLevel from debLevA to debLevB
1932    
1933    checkpoint56b_post
1934    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
1935      is called from DO_THE_MODEL_IO
1936      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
1937      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
1938      - clean up PTRACERS_WRITE_TIMEAVE a little
1939    o add another verification experiment that tests both the cfc-pkg and
1940      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
1941      reactive tendencies treated inline with regular timestepping
1942    o testreport previously did a lousy job of comparing small numbers, so
1943      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
1944      implemented in the little c-progam tmp_cmpnum.c which is embedded in
1945      testreport.
1946    o ptracers_monitor: bug fix for MPI
1947    
1948    checkpoint56a_post
1949    o GCHEM: finish reorganizating the package
1950      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
1951        (introduces another 3D-array for each passive tracer, but only if
1952        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
1953        gchemTendency is not needed because the timestep is done separately)
1954      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
1955      - GCHEM is now---more or less cleanly---separate from PTRACERS
1956      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
1957        so clear to me how that should be done in a general way.
1958    o CFC: improve formatting of output in CFC_ATMOS
1959    o PTRACERS:
1960      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
1961        that ALL experiments with ptracers enable can be checked. This makes
1962        GCHEM_MONITOR obsolete.
1963      - include a runtime parameter PTRACERS_monitorFreq that defaults to
1964        monitorFreq
1965      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
1966    o add PTRACERS (PTR0[1-5]) to testreport output
1967    o exf_check_range:
1968      * default changed to .TRUE.
1969      * will check values for niter0 if debLevA, every timestep if debLevB
1970      * STOP in exf_check_range if 'out of range'
1971      * range chosen generous to allow for potential extema
1972      TBD: a version with stricter range
1973           permitted range would be runtime parameters
1974    o GMredi:
1975      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
1976      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
1977      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
1978    o GCHEM:
1979      - move call to GCHEM_FORCING_SEP, so that it is now called before
1980        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
1981      - introduced a useGCHEM runtime flag and applied it everywhere.
1982      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
1983        this flag is now only visible within GCHEM-pkg routines.
1984      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
1985        be replaced by a 3D array that is computed before thermodynamics; for
1986        this, the tracer ID iTracer had to be included into the parameter list
1987        of ptracers_forcing
1988      - set up forward_step to call gchem_forcing, that will replace
1989        gchem_forcing_int in ptracers_forcing
1990      - cleaning up
1991    o small cleaning of exch2: remove files that are also in eesupp/src
1992    
1993    checkpoint56
1994    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
1995    o mnc: cleanup "full" files--fixes out-of-memory problem
1996    o ECCO-GODAE
1997      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
1998      * fully merged and updated from SIO code
1999        windstress sign change affects
2000        - exf_inscal_[u/v]stress
2001        - sign of xx_tau[u/v] adjustments
2002        - signs in cost_scat
2003      * ctrl_get_gen: avoid update of tau[u/v] for first few days
2004      * natl_box_adjoint updated and compressed
2005      * 2-level checkpoint switch added
2006        (tested in EXP. 1 of natl_box_adjoint)
2007      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
2008    o SVD
2009      * first complete, non-hacked version for SVD calculations
2010      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
2011        performed via direct access files admtlm_vector.it????
2012        (via ctrl_[un]pack)
2013      * optimcycle is used for ARPACK iteration counter
2014        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
2015      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
2016        and add linear transforms where necessary
2017      * controls are initial/final SST, SSS (can be extended; need to check
2018        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
2019    o mdsio: filename info to both stderr, stdout
2020    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
2021      from sign change
2022    
2023    checkpoint55j_post
2024    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
2025      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
2026    o add consistent build directories and .cvsignore files to verification
2027    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
2028    o make all subroutines 30 or less characters in length for certain older
2029      compilers to work (a thorough search only turns up two routines in
2030      pkg/ptracers)
2031    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
2032      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
2033    
2034    checkpoint55i_post
2035    o change arrays for total vertical diffusivity (2.D if explicit,
2036      3.D if implicit) ; each ptracer uses its own background value.
2037    o added mnc/NetCDF output capability to ocn_compon_interf
2038      - added bits to verification/cpl_aim+ocn so that it can run on
2039        ITRDA and other clusters without the mpirun "-wd" option
2040    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
2041      configuration
2042    o give MNC the ability to create additional files rather than
2043      exceeding a specified file size limit "MNC_MAX_FILESIZE"
2044      - the default is just less than 2GB which is a practical limit
2045        on many systems
2046    o Compute the non-local term using either KPP vertical diffusivity (=default)
2047       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
2048    
2049    checkpoint55h_post
2050    o add verification test "vermix"
2051    o remove all the *_ioinc flags and replace with the single global
2052      outputTypesInclusive flag
2053    o allow to set a vertical profile of vertical diffusivity for T & S
2054    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
2055    o useMNC moved from data.mnc to data.pkg
2056    
2057    checkpoint55g_post
2058    o Renaming carbon AD experiments to comply with testreport conventions
2059    o Updating adjoint of Held-Suarez hs94.1x64x5
2060    o Fixing directives for non-ECCO forward_step, after ECCO directives
2061      have been fixed to avoid recomp. of do_oceanic_phys
2062      Works well for global_ocean.90x40x15,
2063      but recomp. issue remains for carbon
2064    o Updating adjoint output for natl_box_adjoint after
2065      pkg/ecco has been modified (see taga c55d_post)
2066    
2067    checkpoint55f_post
2068    o rename to timeave_init_fixed
2069    
2070    checkpoint55e_post
2071    o some delicate re-shuffle of store directives to avoid one
2072      extra call of do_oceanic_physics
2073      affects ecco_the_main_loop.F, do_oceanic_physics.F
2074      checkpoint_lev1_directives.h
2075    o NB: this may break global_ocean adjoint temporarily,
2076      but it is clear how to fix it. Will do later, need this now.
2077    
2078    checkpoint55d_post
2079    o ECCO specific cost function terms (up-to-date with 1x1 runs)
2080    o ecco_cost_weights is modified to 1x1 runs
2081    o modifs to allow observations to be read in as
2082      single file or yearly files
2083    o enable to read exf forcing fields as either
2084      single file or yearly files (flag useExfYearlyFields)
2085    checkpoint55d_pre
2086    
2087    o switch between 2-level and 3-level checkpointing
2088    o add ability of MNC to write local and "partial" (eg. 2D slices where
2089      the full 3D field is never actually stored) arrays to NetCDF files
2090      with the correct (that is, the complete multi-dimensional) set of
2091      array indicies
2092      - used in mom_vecinv() to write the diagFreq output
2093      - tested (demonstrated) in verification/aim.5l_cs
2094    o further mnc-ification
2095      - add verification/lab_sea to the list with mnc setups
2096      - fix undefined mnc v-names in cd_code
2097      - add kpp to mnc output (both snapshot and timeave)
2098    o non-hydrostatic code
2099      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
2100        in calc_gw.F
2101      - defaults to viscAh
2102      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
2103        friction or Leith) in non-hydrostatic mode, as long as there is
2104        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
2105    o pkg/cost
2106      extend simple cost functions to treat time mean quantities
2107      (T,U,V) via cost_accumulate_state from cost_tile
2108    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
2109        be 2 times larger than the minimum size the advection scheme requires.
2110        now get a perfect conservation of salt in advect_cs test-exp (updated)
2111    o GGL90 (Gaspar's TKE mixed layer)
2112      - add horizontal diffusion of TKE, requires exchanges in
2113        do_fields_blocking_exchanges, horizontal diffusivity is zero by
2114        default. In OPA there is no horizontal diffusion of TKE but the
2115        mixing coefficients are computed from a horizontal average of TKE of
2116        6 points or so. I think that diffusion has a little more physical
2117        justification.
2118      - clean up ggl90_calc in the hope of reducing memory usage (this hope
2119        was in vain)
2120      - mask tke-variable in ggl90_init
2121    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
2122    o fix biharmonic diffusion on CS-grid.
2123    o more obcs stuff
2124      - added obcs_external_fields_load as an alternative to the EXF-pkg option
2125        for reading boundary values. This routine is called from
2126        obcs_prescribe_read
2127      - updated obcs_check
2128      - changed sponge layer relaxation parameter units for days to seconds
2129      - turned off sponge layer by default
2130      - changed argument list of OBCS_CALC to myTime+deltaTclock
2131      - fixed about 35 bugs in obcs_external_fields_load
2132    
2133    checkpoint55c_post
2134    o obcs stuff
2135      - new runtime flags useOBCSprescribe, useOBCSbalance
2136      - re-arranged obcs_calc
2137      - moved exf_getobcs to obcs_prescibe_read
2138        obcs_prescibe_read is called after ORLANSKI stuff
2139        and independent of it (executable can contain all).
2140      - updated obcs_check
2141      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
2142        These may be necessary only if tangential velocities are
2143        prescribed at OB, not sure, needs testing.
2144    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
2145      which simplifies the calls and passes the ifc check-bounds test
2146    
2147    checkpoint55b_post
2148    o add a 2D scalar, Z location, exchange_2 routine.
2149    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
2150      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
2151      affects advect_cs results (for the wrong reason): update output.txt
2152    o use a more standard discretization for biharmonic viscosity ;
2153     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
2154      affects results of dome set-up: update output.txt
2155    o fix gad_advection.F (CubedSphere part), back to version 1.23
2156    o fix bug in mom_vi_del2uv.F (CubedSphere part).
2157    
2158    checkpoint55a_post
2159    o merged code to
2160      * prescribe/read time-dependent open boundaries
2161        (works in conjunction with exf, cal)
2162      * sponge layer code for open boundaries
2163      * each boundary N/S/E/W now has its own CPP option
2164        (healthy for the adjoint)
2165    
2166    checkpoint55
2167    o up-to-date adjoint of previous breaks
2168      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
2169      - global_ocean_ebm: adjoint still needs fix (TLM ok)
2170      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
2171      - carbon: * remove tr1-related adjoint verification
2172                * add ptracer as control variable
2173    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
2174      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
2175    
2176    checkpoint54f_post
2177    o in verification/carbin/ remove experiment related to
2178      ALLOW_PASSIVE_TRACER (array tr1 etc)
2179      code_ad/ input_ad/ results_ad
2180    
2181    o add two new packages
2182      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
2183        + subject to optimization (memory)
2184      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
2185        + subject to reordering (many GOTOs in the original code)
2186        + so far opps is called for every (i,j) point, and then operates in
2187          the vertical; one may want to reorder the scheme in order operate in
2188          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
2189          fields)
2190    o overhaul of IO so that we now have flags for MDSIO and/or MNC
2191      - all verification tests compile and run with linux_ia32_g77
2192      - defaults are compatible with current input files--nothing
2193        should change if you were not previously using MNC
2194      - MNC output has been added in numerous places (eg. timeave)
2195        but there are still a few writes not yet do-able with MNC
2196        (this is in progress)
2197      - flags now allow for either/or/both use of MDSIO and MNC and
2198        documentation will soon follow
2199      - numerous small formatting cleanups for ProTeX
2200    o add version info (via BUILD_INFO.h) to MNC and stdout
2201    
2202    checkpoint54e_post
2203    o add two new packages
2204      - pp81 (Packanowski and Philander, 1981), Richardson number and
2205        stratification dependent mixing
2206      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
2207      - these scheme operate in a similar manner as KPP (without ghat, of
2208        course), however there is only one diffusivity that is used for both
2209        temperature and salinity (and passive tracers)ç
2210    o add offline package
2211    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
2212      provided by Stephanie Dutkiewicz
2213    o genmake2: add ability to search for C compilers and cleanup test output
2214      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
2215    
2216    checkpoint54d_post
2217    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
2218    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
2219      leading to additional shift by 5 days each year of integration
2220       (i.e. leading to considerable offset over the years)
2221    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
2222    o start with no AB and no initial filtering (staggerTimeStep):
2223      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
2224    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
2225      (external loading & cpl import/export stay in forward_step.F)
2226    o update coupling interface to work with new staggerTimeStep
2227    o change MDSIO ptracers_pickup.
2228    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
2229    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
2230    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
2231    
2232    checkpoint54c_post
2233    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
2234      this affects (truncation error) output.txt of test-exp:
2235       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
2236    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
2237    o change Qnet to always be the net heat flux, (+upward).
2238      affects (truncation error) output of natl_box exp.: updated
2239    o define the max number of passive tracers in PTRACERS_SIZE.h
2240    o start to test mnc routinely in exp0
2241    o add sea-ice loading (sIceLoad) as a new forcing field.
2242    
2243    checkpoint54b_post
2244    o add testreport "-j JOBS" option for parallel builds (tested and pretty
2245       impressive on Altix and Opteron systems)
2246    o diagnostics can now write NetCDF files through the mnc package
2247    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
2248    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
2249    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
2250      affects (truncation error) output of lab_sea & natl_box exp.: updated
2251    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
2252    
2253    checkpoint54a_post
2254    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
2255    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
2256    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
2257    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
2258      + internal_wave (shift in writing cg2d_ini_res)
2259    checkpoint54a_pre
2260    
2261    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
2262      - modified verification/lab_sea and natl_box_adjoint accordingly
2263    
2264    checkpoint54
2265    checkpoint53g_post
2266    o prepare splitting of thermodynamics: store convect.counter in common block
2267    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
2268      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
2269    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
2270    o new parameter "nShapS": allow to treat differently S from T (nShapT)
2271    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
2272    o restore adjointability
2273    
2274    checkpoint53f_post
2275    o modifications that affect AIM experiment results (update output.txt):
2276      - no advection of S at top interface Nr (pkg/generic_advdiff)
2277      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
2278    o AIM pkg:
2279      - include stability function into surf.Flux derivative relative to Tsurf
2280      - calculate clear-sky radiation & surface temp. change (for diagnostics)
2281    
2282    checkpoint53e_post
2283    o merged cylindrical coord configuration
2284    o added rotating_tank experiment
2285    checkpoint53e_pre
2286    
2287    checkpoint53d_post
2288    o faulks upgraded: re-generate output.txt that have changed:
2289       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
2290    o Added Bryan and Lewis, 1979, vertical diffusivity profile
2291    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
2292    o added Sadourny discretization of Coriolis
2293      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
2294      - re-enabled use of omega3 (useAbsVorticity)
2295    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
2296      vector-invariant equations
2297      - note: does *NOT* yet use same variable visc. for no-slip BC's.
2298    o recoded the lateral boundary conditions for non-hydrostatic w, this time
2299      hopefully without new bugs
2300      - still to do: biharmonic friction for non-hydrostatic w
2301    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
2302    o regenerated output for global_ocean_ebm (using -ieee)
2303    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
2304      of mom_common/
2305      - simple re-arrangement of instructions within computing loop
2306    checkpoint53d_pre
2307    
2308    checkpoint53c_post
2309    o new version of coupler for AIM+thSIce and Ocean models
2310     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
2311     - land: change Evaporation of snow
2312     - aim with thSIce: fix bug in snow-precip.
2313    o changes to calc_gw.F
2314     - bug fix for w^2 term near the bottom boundary
2315     - (hopefully) improve the lateral slip boundary condtions for use with
2316        partial/looped cells
2317      - because the bug fix changes two verification experiments anyway (exp5
2318        and plume on slope), change the lateral boundary condition from half slip
2319        to the value of no_slip_sides
2320    o ebm package wasnt quite up to the parallel task. Fixed that.
2321    o Adjoint of EBM package + verification
2322      * TLM OK
2323      * ADM not sufficient accuracy yet (needs further testing)
2324    
2325    checkpoint53b_post
2326    o Commiting new energy balance model to repository
2327      * package is pkg/ebm
2328      * verif. is verification/global_ocean_ebm
2329      * references are in ebm_driver.F
2330    C      * X. Wang, P. Stone and J. Marotzke, 1999:
2331    C        Global thermohaline circulation. Part I:
2332    C        Sensitivity to atmospheric moisture transport.
2333    C        J. Climate 12(1), 71-82
2334    C      * X. Wang, P. Stone and J. Marotzke, 1999:
2335    C        Global thermohaline circulation. Part II:
2336    C        Sensitivity with interactive transport.
2337    C        J. Climate 12(1), 83-91
2338    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
2339    C        Destabilization of the thermohaline circulation
2340    C        by atmospheric eddy transports.
2341    C        J. Climate 7(12), 1870-1882
2342    o Will need long integration testing.
2343    checkpoint53b_pre
2344    
2345    o created pkg/mom_common in preparation for variable viscosity code
2346    o renamed and split ini_mnc_io
2347    o pkg/land: only liquid water can diffuse or run-off
2348    o AIM using land: soil wetness availability account for snow
2349    o added printMapIncludesZeros to EEPARMS namelist
2350    
2351    checkpoint53a_post
2352    o restore TAMC compatiility for exf_constants.h
2353      (no usage of _d in .h)
2354    o Additional storing in KPP in an attempt to fix
2355      TAMC problem with adjoint of KPP code.
2356      (no success...)
2357      Identical code works fine with TAF.
2358    o Fixed verification/natl_box_adjoint experiments.
2359      Initial conditions for Experiments 4 and 5 are now
2360      set to "SEAICE_initialHEFF=0", which is more reasonable,
2361      and hence gives results closer to that of Experiment 2.
2362      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
2363    
2364    checkpoint53
2365    o stable checkpoint with up to date adjoint
2366      TLM tests only run for 1st grdchk at the moment. Its unclear if
2367      this is a code problem or a problem with resetting code for g_
2368      variables that is being autogenerated wrong.
2369      Otherwise:
2370       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
2371       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
2372         are both still in chaos following their security messes.
2373    
2374    checkpoint52n_post
2375    o various build (mostly genmake2) changes including:
2376      - ability to build/run more easily within Cygwin and MacOS X
2377      - more complicated Makefiles with a stronger dependence on Gnu Make
2378    o pkg/seaice modifications
2379      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
2380        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
2381        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
2382      - changed proxy for geostrophic velocity and updated
2383        verification/lab_sea/results/* accordingly
2384      - removed ADI dynamic solver from pkg/seaice
2385      - replaced all occurrences of 1/CSTICE or 1/CSUICE
2386        they caused a segmentation fault under certain circumstances
2387      - removed unused field WATR
2388    o bug fix in exf-package:
2389      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
2390         now reflect that.
2391    o small fixes in the cal-package:
2392      - set reference date to first of January for the 'model'-calendar
2393      - failing of cal_CheckDate in cal_FullDate now actually results in a
2394        warning
2395    o small modifications in exf-package to increase flexibility:
2396      - change climtempfreeze from a constant to a runtime parameter that
2397        is specified in data.exf_clim (default = -1.9)
2398      - introduce runtime parameter windstressmax (default = 2.0) that is
2399        specified in data.exf
2400    o fix in pkg/thsice:
2401      - update Evap (Tsf changes) to be consistent with Latent heat flux
2402      - maintain snow precipitation unchanged (even if Tsf >=0).
2403     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
2404    
2405    checkpoint52m_post
2406    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
2407      this does not change any of the results, because myIter=0 in swfrac always
2408      lead to jwtype=2 (the default anyway), but the call makes little sense
2409      as a default
2410    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
2411    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
2412      atmospheric model (AIM) to use it ; add a "slab ocean" component.
2413    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
2414    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
2415    o extending useSingleCpuIO option to work with new exch2 I/O format
2416      - old-style, missing-tile I/O is still accessible by defining CPP
2417        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
2418    o monitor package can write to NetCDF files and/or STDOUT
2419    o fix re-definition bug in MNC_GRID_INIT_ALL()
2420    o doc/api_reference added
2421      - a framework for building an API Reference Manual using all
2422        the "protex" comments embedded in the code
2423      - see pkg/generic_advdiff, pkg/mnc for examples
2424    o MNC:
2425      - make myThid the last argument for all subroutines
2426      - new default for the grid files: NO halos
2427      - add useMNC and other run-time flags
2428      - separate per-file-group handling of the unlimited dimension
2429      - early initialization of MNC w/ flags read at the eeboot stage
2430        and lookup tables set in initialize_fixed
2431      - write all MNC output to a freshly-created directory
2432    o thermodynamics sea-ice (thsice) is now tested with testreport.
2433    o test exp. advect_cs: use the standard cs32 grid ; update output.
2434    o Added functionality to grdchk:
2435      pick global i,j,k position (or nearest wet) where to perform check.
2436    
2437    checkpoint52l_post
2438    o new land formulation:
2439      a) use ground enthalpy as prognostic variable to ensure exact
2440         energy conservation.
2441      b) account for water temperature and for latent heat of freezing
2442         in all processes (rain, run-off, ground storage)
2443      c) compute surface and ground temperature implicitly.
2444    o aim_v23 modification for new land model:
2445      a) Treat separately land / ocean / sea-ice surface fluxes
2446         to allow implicit computation of land & sea-ice surface temp.
2447      b) add snow precipitation.
2448    checkpoint52l_pre
2449    
2450    o fix problem (when 1 tile is empty) in min/max monitor.
2451    o fix bug in timeAve (u,vZetatave in common block)
2452    o no restoring terms under ice for pkg/seaice
2453    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
2454    o bug fix for pkg/seaice pickups
2455    o change MNC call locations and add coordinate attributes
2456    o mask vorticity at the corner ; affects global_ocean.cs output
2457    o fix ini_curvilinear_grid ; test CS experiments with mpi
2458    o aim.5l_cs: modify sea-ice fraction input file ; update output
2459    o exf: Adding simple range check routine for exf fields after read
2460    
2461    checkpoint52k_post
2462    o removed top-level directory "diags"
2463      - we migrated these functions to pkg/timeave a long time ago
2464    o fixed bug introduced in pkg/monitor
2465    o accuracy ctrlprec = 32 insuffient for gradient checks using
2466      averaged fields (I/O via cost_averages)
2467      -> use ctrl.h in active_file*.F to control I/O precision.
2468    o paramter list of CALL ADTHE_MAIN_LOOP
2469    o added initial do_the_model_io to ecco
2470    o set all ...Freq to zero after cost_final
2471      taveFreq, dumpFreq, pChkptFreq
2472    o MAIN and ECCO differentiability restored
2473    
2474    checkpoint52j_post
2475    o fix nchklev in tamc.h for global_ocean...
2476    o Bringing flow and store directives up-to-date
2477    o Really weird thing!
2478      call do_the_model_io from the_main_loop with parameters
2479      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
2480      TAF places a faulty re-call of initialise_varia
2481      after cost_final call which should not be there!
2482    checkpoint52j_pre
2483    
2484    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
2485      error messages
2486    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
2487    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
2488      debug output
2489    o modfied mdsio_writefield.F to handle non-global files under exch2
2490    o update AIM Cubed-Sphere exp (aim.5l_cs):
2491      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
2492    o update AIM Equatorial Channel exp:
2493      use standard aim_v23 pkg and change the SST fields to be more realistic.
2494    o globalFile now works with exch2
2495    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
2496      mon_vort3.F to make exch2 friendly with >1 tile per cube face
2497    o limit timeave output for hi-res integrations
2498    
2499    checkpoint52i_post
2500    o removed CPP_EEOPTIONS.h from verification/*/code
2501    o updated the tiling for global_ocean_pressure
2502    checkpoint52i_pre
2503    
2504    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
2505      the old pkg/aim).
2506    
2507    checkpoint52h_pre
2508    o shortened offending lines in exch2_send_rx?.template
2509    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
2510    o genmake2: add build & execute test for NetCDF code
2511    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
2512      old grid files, moved CPP_EEMACROS.h to pkg/exch2
2513    o added useSingleCPUIO flag to monitor.F and mon_out.F
2514    o added temporary hack for sea-ice dynamics on the cube:
2515      metric terms are ignored and it is assumed that
2516      there is no sea-ice on cube faces 1, 2, 4, and 5.
2517    
2518    checkpoint52f_post
2519    o added exch2 cube routines to pkg/exch2
2520    o modified hs94.cs-32x32x5 to use it
2521    o added new grid files to hs94.cs-32x32x5
2522    checkpoint52f_pre
2523    
2524    checkpoint52e_post
2525    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
2526      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
2527    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
2528      to work with implicit vertical advection and AB ;
2529    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
2530    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
2531     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
2532    checkpoint52e_pre
2533    
2534    o fix bug in impldiff when Nr=1 or Nr=2.
2535    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
2536    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
2537    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
2538      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
2539    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
2540    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
2541    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
2542    
2543    checkpoint52d_post
2544    o re-tiled many expts to allow comparison in multi-processor mode
2545      - updated output accordingly
2546      - changed hs94.128x64x5 to use intial T from file rather than use the
2547        random number generator
2548    o add infrastructure in model routines for fizhi and gridalt packages
2549    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
2550    o changes to permit hi-res, cubed-sphere, configuration
2551      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
2552      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
2553      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
2554        of surface winds for the cube
2555      (A verification experiment, based on global_ocean.cs32x15, but with
2556       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
2557       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
2558       complete with example surface forcing files and matlab scripts to look
2559       at the output and compare it with that of global_ocean.cs32x15.)
2560    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
2561       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
2562       to conform to the common rule.
2563    o check-in the first version of the coupler + interfaces for multi-components
2564       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
2565       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
2566       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
2567       - ocean and atmos. share the same horizontal grid (no interpolation).
2568       - exchanges between component and coupler is done in forward_step
2569    o new verification experiment, cpl_aim+ocn:
2570       coupled ocean - AIM atmosphere on cs32 grid.
2571    
2572    checkpoint52d_pre
2573    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
2574    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
2575    
2576    checkpoint52c_post
2577    o Fixing OPTIONS files for use of exf:
2578      - ALLOW_ECCO not needed
2579      - ECCO_CPPOPTIONS.h should not be included from
2580        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
2581        as has been the case in the past
2582      - All cal/exf related options are currently set in
2583        single header file. Should remain so until we
2584        agree on a consistent new policy.
2585    o Removed all CPP options for cal package.
2586      cal has no more CPP options.
2587    o modified STOREs in GAD_ADVECTION
2588    o corrected key comp. for passkey
2589    
2590    checkpoint52b_post
2591    o new version: "thsice" of thermodynamic sea-ice pkg:
2592     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
2593     - modify fluxes but do not change theta directly;
2594     - light cleaning of bulk_force pkg (still needed with thsice).
2595     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
2596       + output_thsice.txt to test thsice & bulk_force pkgs.
2597    o put back grid & coriolis monitor output.
2598    checkpoint52b_pre
2599    
2600    o call "do_the_model_io" at the beginning (=> dump initial state)
2601    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
2602    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
2603      (need info on NUMBER_OF_PTRACERS)
2604    o missing PTRACERS headers in some routines
2605    o default tamc.h in pkg/autodiff supposed to crash
2606      to ensure proper customization
2607    
2608    checkpoint52a_post
2609    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
2610      - moved surfaceTendencyTice from pkg/seaice to main code
2611      - subroutine FREEZE_SURFACE now limits only surface temperature
2612        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
2613        => new output.txt for global_ocean.cs32x15 & global_with_exf
2614      - keep the old version of FREEZE for backward compatibility;
2615        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
2616      - corresponding modifs for TAF directives
2617    o added surface flux output variables to TIMEAVE_STATVARS
2618    o time-averaged output for pkg/ptracers
2619    o fix problem with ECCO-related divided adjoint
2620      snapshot file was missing some ad-variables,
2621      but no warning issued by TAF
2622    
2623    checkpoint52a_pre
2624    o some bug fixes for #undef REAL4_IS_SLOW
2625    
2626    checkpoint52 = ecco_c52_e35
2627    o after testing adjoints of checkpoint51u_post
2628    
2629    checkpoint51u_post
2630    o this is the post-merge tag of the ecco-branch
2631      (needs another clean checkout and re-testing)
2632    o various natl_box_adjoint configs and results
2633      but no input fields
2634    o obcs adjoint not yet merged!
2635    o adding ECCO global 1x1 and 2x2 degree configs
2636    o updated/extended some store directives for seaice
2637    o pkg/ecco now containes ecco-specific part of cost function
2638    o top level routines the_main_loop, forward_step
2639      supersede those in model/src/
2640      previous input data.cost now in data.ecco
2641      (new namelist ecco_cost_nml)
2642    o in ctrl/ cleaned some cross-dependencies and updated CPP options
2643    
2644    checkpoint51t_post
2645    o this is the pre-merge tag of the ecco-branch
2646    
2647    checkpoint51s_post
2648    o cleanup: removed various obsolete #define-s
2649    o pkg/grdchk
2650      - renamed 'ph-grd 3' to 'grad-res'
2651      - merged from ecco-branch
2652        (remaining bug fixes for obcs gradient checks)
2653      - additional high-precision output for testreport
2654        (grep for 'precision_grdchk_result')
2655    
2656    checkpoint51r_post
2657    o cleaned up or removed CPP_OPTIONS.h files
2658    o updated results for some of the tests to reflect the new
2659      optfiles (-ieee: -O0 instead of -O3)
2660    
2661    checkpoint51q_post
2662    o cd_code:
2663      - moved cd_scheme.F -> cd_code_scheme.F
2664      - separate read_checkpoint from cd_code_ini_vars.F
2665      - separated cd_code part from write_checkpoint
2666      - updated AD_SOURCE, generated .flow
2667      - added CD_CODE_VARS.h to the_main_loop
2668      - Moving cd_code specific store dir.s to pkg/cd_code
2669    o ctrl package totally restructured
2670      - pack/unpack now optional and decoupled from
2671        xx_/adxx_ I/O
2672      - ctrl_pack/unpack cleaned
2673        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
2674      - confined inclusion of AD_CONFIG.h to where necessary.
2675    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
2676    
2677    checkpoint51p_post
2678    o create initial cd_code package
2679      - WARNING: the initialization of fields within packages
2680        is broken because INI_FIELDS (where READ_CHECKPOINT is
2681        called) is called *before* PACKAGES_INIT_VARIABLES.
2682        This seems to be backwards since
2683        1) its important to initially zero the entire field including
2684           the "halo" region
2685        2) zeroing needs to be done *before* reading pickup info
2686           and the pickup call might or might not happen in any
2687           particular run
2688      - this needs an overhaul for R2
2689    o cleanup verification/*/code/GMREDI_OPTIONS.h
2690    o cleanup testreport
2691    
2692    checkpoint51o_post
2693    o bringing AD-related verif's up to date with genmake2
2694      - carbon/
2695      - global_ocean.90x40x15/
2696      - hs.94.1x64x5/
2697      - (front_relax/ )
2698    o (more) consistent directory structure for AD-related verif.'s
2699    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
2700    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
2701    o bug fix in find_alpha.F for MDJWF:
2702      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
2703        change rho -> rho-rhoConst
2704      - replace call find_rho to find_rhonum
2705    o initialisation of rFlx extended to full array (required by TAF)
2706      and shifted to thermodynamics
2707    o removed PTRACERS.h in ptracers routine
2708    o added surfacetendencyPtr to S/R parameter list pracers_forcing
2709    o Correcting initialisations for fVerU, fVerV.
2710    o helping TAF to recognize dependency on kUp for
2711      fVerU, fVerV
2712    o Replacing delZ by delR in pkg/ctrl/
2713    checkpoint51o_pre
2714    
2715    o undid all of cp51 pending some cleanups and discussion
2716    o added the [#include "AD_CONFIG.h"] statement to all files that need
2717       it for adjoint/tl #defines
2718     o re-worked the build logic in genmake2 to support AD_CONFIG.h
2719     o removed tools/genmake since it no longer works
2720    
2721    checkpoint51n_post
2722    o modifications to make FREEZE flux visible to pkg/kpp
2723      - moved surfaceTendencyTice from pkg/seaice to main code
2724      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
2725      - subroutine FREEZE now limits only surface temperature
2726        (this means new output.txt for global_ocean.90x40x15,
2727         global_ocean.cs32x15, and global_with_exf)
2728    o added surface flux output variables to TIMEAVE_STATVARS
2729    
2730    checkpoint51n_pre
2731    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
2732    o added [#include "AD_CONFIG.h"] to all files that use the following
2733      defines:
2734      - ALLOW_ADJOINT_RUN
2735      - ALLOW_TANGENTLINEAR_RUN
2736      - ALLOW_ECCO_OPTIMIZATION
2737    
2738    checkpoint51m_post
2739    o incorporating changes to get TAMC/TAF working in genmake2
2740      - added new TAMC/TAF targets to the Makefile
2741      - various cleanups related to package handling
2742      - these changes should have no impact on the forward model
2743    
2744    checkpoint51l_post
2745    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
2746     - faster algorithm for cal_addtime.F
2747     - higher precision arithmetic, where needed
2748     - pkg/exf *startdate variables changed from calendar date to
2749       model integration time
2750    
2751    checkpoint51l_pre
2752    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
2753    o enable to apply restoring on S & T only in a latitude band.
2754    o update output (external_forcing_surf modif. change truncation errors)
2755       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
2756    
2757    checkpoint51k_post
2758    o change default to: useNHMTerms=.FALSE.
2759     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
2760       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
2761     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
2762        exp1, ideal_2D_oce
2763     - change data file of oceanic exp (leave the results unchanged for now)
2764       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
2765    o set gravitySign automatically according to the vertical coordinate used
2766      (and change sign: back to "logical" value: +1 when R increases downward)
2767    o added an include barrier to the default CPP_OPTIONS.h and
2768      removed the #include "PACKAGES_CONFIG.h" from it
2769    o fix a bug in mom_fluxform (from chk51j_post)
2770    
2771    checkpoint51j_post
2772    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
2773    o adjusted some flow directives (dynamics, thermodynamics)
2774    o added cubed-sphere case to test cost function
2775    o heckpoint_lev?_directives.h now include
2776      pkg-specific directives, whenever those are enabled.
2777    o Moving pkg-specific flow directives to corresponding pkg
2778      Moving pkg-specific differentiation list to corresponding pkg
2779      Moving pkg-specific checkpoint-lev storing to corresponding pkg
2780      ---> conventions are
2781           - pkg_ad.flow
2782           - pkg_ad_diff.list
2783           - pkg_ad_check_lev?_dir.h
2784    
2785    checkpoint51i_post
2786    o merge of the branch-genmake2
2787      - knowingly breaks the older genmake
2788      - automatic generation of all ALLOW_${PKG_NAME} defines
2789      - new testreport supersedes older testscript
2790    o large number of package inclusion and header cleanups
2791    checkpoint51i_pre
2792    
2793    o new output for adjoin of global ocean vector invariant
2794    o fix for checkpoint of thermodynamic seaice and bulk_force
2795    o Steph gchem various cleanups
2796    
2797    checkpoint 51h_pre
2798    o fixed some single quotes
2799    o modify gchem pkg to be more versatile
2800    o modifications to clean up dic pkg
2801    o add pkg/cfc
2802    
2803    checkpoint51g_post
2804    o provide links for ARPACK and ADM*TLM
2805    o start removing verification/vero/
2806    o update AD-related stuff
2807      (in particular some IF-statements in model/src/ routines)
2808    o adding to verification/global_ocean.90x40x15/ adjoint of
2809      vector invariant setup
2810    
2811    checkpoint51f_post
2812    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
2813    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
2814      of tracer Green's fucntions for ocean inversion project.
2815    
2816    checkpoint51f_pre
2817    o Added on-the-fly spatial interpolation capability
2818        "USE_EXF_INTERPOLATION" to pkg/exf.
2819      - This is a temporary Cartesian-grid hack until
2820        the super-duper ESMF coupler becomes available.
2821      - See verification/global_with_exf/README for usage example.
2822      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
2823        flags and modified pkg/seaice accordingly.
2824    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
2825        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
2826        non-local transport term.
2827    
2828    checkpoint51e_post
2829    o pkg/mom_vecinv:
2830      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
2831      - add time-ave diagnostic of vorticity advection.
2832    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
2833    o atmospheric geopotential: - include water vapor effect;
2834                                - use p^kappa in p* scaling.
2835    o land pkg: read initial state from files.
2836    o AIM : add stratospheric drag in the upper level
2837    
2838    checkpoint51d_post
2839    o change function ILNBLNK (=> last non-blank char.) to return zero
2840      (instead of the string length) when the string. char is empty
2841    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
2842    o modif's to restore TAMC compatibility
2843      - avoid "_d" constructs in PARAMETER declarations
2844      - avoid interrupting lines by comment lines
2845    o Use cluster local disks for purely local I/O
2846      vs. globally visible disks needed for ctrl stuff
2847      (merged from ecco-branch)
2848      - new active_file_loc... and mdsio_..._loc routines
2849      - affected packages: autodiff, ctrl, grdchk, mdsio
2850    
2851    checkpoint51c_post
2852    o introducing integer flag debugLevel
2853      - debLevZero: suppress all output
2854      - debLevA: standard
2855      - debLevB: equivalent to current debugMode=.TRUE.
2856    o introducing pathname variable mdsioLocalDir for mdsio
2857      that can be specified at runtime
2858      (relevant for cluster I/O to local disk)
2859    `
2860    >>>checkpoint51b_post
2861    adjoint of ptracers
2862    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
2863    o extended state in checkpoint_lev?, etc.
2864    o alternative ctrl/cost with tr1 or ptracer
2865    o new comlev1_bibj_ptracers
2866    o new ptracers.flow
2867    o made ptracers_forcing same as external_forcing_s
2868    o added verification for adjoint with ptracers
2869      - adm. grdchk fail so far
2870      - tlm. grdchk OK
2871      - checked tapelev/comlev recomputations: OK
2872    <<<checkpoint51b_pre
2873    
2874    checkpoint51a_post
2875    o added code for biogeochemistry package
2876      - new pkgs: dic, gchem
2877      - new subroutine in ptracers
2878    o modify code for biogeo packages
2879      - in model/src and pkg/ptracers
2880    
2881    checkpoint51
2882    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
2883      - autodiff, ctrl, exf, grdchk, seaice
2884      kept separate packages
2885      - cost, ecco, obcs
2886    o updating verification/internal_wave, verification/lab_sea
2887      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
2888    
2889    checkpoint50i_post
2890    o Preparing next differentiable checkpoint and sync
2891      of MAIN vs. ecco-branch
2892      - 1st step: this one is differentiable
2893      - 2nd step: next(! not this) checkpoint will have updated packages
2894                  from ecco-branch)
2895    
2896    checkpoint50h_post
2897    o new package "land": provide surface BC for AIM.
2898    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
2899    o AIM: use true log-P extrapolation for near surface temp (= as in
2900        F.Molteni paper) ; update aim.5l_cs output.
2901    o New variable in PARM03 for more flexible pickups
2902    o somewhat cleaned package initialisation sequence for
2903      ctrl/ cost/ ecco/ in packages_... routines
2904    
2905    checkpoint50g_post
2906    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
2907      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
2908      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
2909        made the default because of faster convergence than ADI
2910    
2911    checkpoint50f_post
2912    o exf totally restructured
2913      - replaced all exf_set_ routines by one generic exf_set_gen.F
2914        and made sure it's still differentiable
2915      - split exf_getffields.F into new exf_bulkformulae.F
2916      - exf_inscal_/exf_outscal_ suffixes consistent with field names
2917      - updated adjoint/makefile and relevant verif. accordingly
2918    
2919    checkpoint50f_pre
2920     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
2921          + change Evap over land. (update aim.5l_cs output)
2922     o added missing .cvsignores and made uniform across expts
2923     o changed configuration of tidal_basin_2d expt
2924     o added pkg/debug functions for tracing code in fatal crashes
2925     o tidied pkg/monitor to use MONITOR_OPTIONS.h
2926     o new fn in pkg/monitor to stop model if solution grows too big
2927     o removed lots of single quotes from comments
2928    
2929    checkpoint50e_post
2930    o make KPP work with PTRACERS
2931     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
2932       nearly a copy of kpp_transport_s
2933     - there is no analogue to SurfaceTendencyS, so I have to use
2934       gPtr(of the surface layer) instead
2935    o add a new platform SunFire+mpi (SunFire 15000) to genmake
2936    checkpoint50e_pre
2937    
2938    checkpoint50d_post
2939    o change kpp output from multiple-record state files to single-record state
2940      files analogous to write_state.F
2941    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
2942      analogous to the cg2d-related output.
2943    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
2944      so that writing to internal file fn (with length 512) fails.
2945    checkpoint50d_pre
2946    
2947    checkpoint50c_post
2948    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
2949    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
2950    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
2951    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
2952    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
2953    
2954    checkpoint50c_pre
2955    Merging from release1_p13:
2956    o bug fix for pkg/seaice dynamic solver
2957    o Added SEAICE_initialHEFF to pkg/seaice
2958    
2959    checkpoint50b_post
2960    o store u*,v* in gU,V instead of in guNm1,gvNm1
2961    o in order to put the momForcing out of the Adams-Bashforth:
2962      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
2963      to timestep.F
2964    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
2965    o re-generate output for highly sensitive test-exp:
2966       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
2967    
2968    checkpoint50b_pre
2969    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
2970    o corrected CPP option mismatch in exf_Bulk... functions for case
2971      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
2972    
2973    checkpoint50a_post
2974    o Bug fix for merging between c50 and KPP.
2975      ikey was passed from thermodynamics to kpp_calc via
2976      common block rather than being recomputed in kpp_calc,
2977      in contradiction with new key itdkey.
2978      New key ikppkey created, and tamc.h headers updated.
2979    
2980    checkpoint50
2981    - 2nd step of merge with ecco-branch:
2982      merge changes in ecco-branch back into main trunk
2983    - bug fix in find_alpha
2984    - more storing in gmredi_calc_tensor.F, kpp_routines.F
2985    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
2986    - merged some sliced AD support routines
2987    
2988    checkpoint49
2989    merged from ecco-branch:
2990    o exf:
2991      - Enable initialisation of forcing fields to constant
2992        (runtime) values.
2993      - in exf_getffields.F
2994        Reduce i-/j-loop to interior domain, discarding overlaps.
2995        That also fixes wrong TAF-key computations for key_1, key_2
2996        with bulf formulae.
2997      - exf_init.F modify #ifdef for exf_init_evap
2998      - exf_getffieldrec.F, ctrl_getrec.F
2999        The following INT-usages are not safe:
3000          fldsecs  = int(fldsecs/fldperiod)*fldperiod
3001          fldcount = int(fldsecs/fldperiod) + 1
3002        and were modified.
3003    o autodiff: checkpoint_lev...
3004      - updated storing for bulk formulae (some arrays were missing)
3005      - added state for seaice package
3006      - synchronized with main branch
3007    o DIVA:
3008      Modif.s in
3009      - the_main_loop.F
3010      - the_model_main.F
3011      and added cost_final_restore.F cost_final_store.F
3012      o With these changes, it is possible to fully separate
3013        the first forward run to compute the cost function (mdthe_main_loop)
3014        and adjoint runs over individual DIVA intervals (adthe_main_loop)
3015        into separate model executions.
3016        This enables better tuning of DIVA to given queue sizes.
3017      o Loss of cost function value in consecutive DIVA runs is
3018        fixed by storing to 'costfinal' file.
3019      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
3020        beginning/end of adjoint integration is accounted for.
3021      The current changes apply to TAF-1.4.26.
3022      TAF has one remaining bug, requiring one manual change
3023      (see MITgcm manual).
3024    o cal: synchronized between MAIN and ecco-branch
3025    
3026    checkpoint48i_post
3027    o Changes to restore differentiability of code w.r.t. previous tag
3028      (mostly adding new routines to make list and replacing
3029      pressure by totPhiHyd).
3030    o Updated and merged grdchk package
3031      - has both ADM and TLM checks
3032      - works for single- and multi-proc.
3033      - output cleaned
3034      - worked successfully for parallel DIVA
3035    o genmake:
3036      - Adding -platform=SP4
3037      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
3038    o Modif. for DIVA:
3039      ctrl_unpack should not be called in intermediate DIVA interval.
3040      (similar thing would apply for active files such as
3041      tbar, sbar, psbar, which should not be reinitialised;
3042      only relevant for ecco-branch)
3043    
3044    checkpoint48h_post
3045    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
3046    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
3047    o Added SEAICE_initialHEFF to pkg/seaice
3048    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
3049    
3050    checkpoint48g_post
3051    --- EOS:
3052    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
3053      store total Potential in totPhyHyd for diagnostics & EOS.
3054    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
3055    --- Pressure/geopotential gradient:
3056    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
3057    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
3058      ( changes results of global_ocean_pressure )
3059    o NLFS + z-coord.: add eta*Rho' contribution.
3060    o accurate phiHyd when using interface-W at the middle between 2 centers
3061     ( changes results of ideal_2D_oce )
3062    o includes r* 2nd term in potential gradient.
3063    
3064    checkpoint48f_post
3065    Merging from release1_p12:
3066    o Modifications for using pkg/exf with pkg/seaice
3067      - improved description of the various forcing configurations
3068      - added basic radiation bulk formulae to pkg/exf
3069      - units/sign fix for evap computation in exf_getffields.F
3070      - updated verification/global_with_exf/results/output.txt
3071    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
3072      (SBO) core products, including oceanic mass, center-of-mass,
3073      angular, and bottom pressure (see pkg/sbo/README.sbo).
3074    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
3075      to avoid negative values in shallow regions.
3076      - updated verification/natl_box/results/output.txt
3077      - updated verification/lab_sea/results/output.txt
3078    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
3079    o Added useSingleCpuIO option (see PARAMS.h).
3080    o Updated useSingleCpuIO option in mdsio_writefield.F to
3081      work with multi-field files, e.g., for single-file pickup.
3082    o pkg/seaice:
3083      - bug fix in growth.F: QNET for no shortwave case
3084      - added HeffFile for specifying initial sea-ice thickness
3085      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
3086    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
3087      kpp_transport_t.F, forward_step.F, and the_main_loop.F
3088    o pkg/seaice:
3089      - adjoint-friendly modifications
3090      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
3091    
3092    checkpoint48e_post
3093    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
3094    o dynamics: change definition of computational domain & adapt mom_fluxform
3095      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
3096    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
3097        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
3098        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
3099        global_ocean.90x40x15 global_with_exf global_ocean_pressure
3100        inverted_barometer solid-body.cs-32x32x1
3101      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
3102    
3103    checkpoint48d_post
3104    o in preparation for r*:
3105     a) use pre-computed gradient of hydrostatic potential:
3106        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
3107     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
3108        => affects results of glob_oce_pressure (different truncation error)  
3109      update output.txt of ideal_2D_oce & global_ocean_pressure
3110    
3111    checkpoint48d_pre
3112    o in preparation for r*:
3113      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
3114      pass the 2 comp. of the grad. as arguments to momentum S/R.
3115      but for the moment, only used if it does not change the results.
3116    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
3117    
3118    checkpoint48c_post
3119    Modifications in treatment of initial flux forcing controls
3120    to avoid extra storing of flux fields.
3121    
3122    checkpoint48c_pre
3123    o Added tidal_basin_2d experiment (currently 1D!)
3124    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
3125    
3126    checkpoint48b_post
3127    o r* coordinate added in #ifdef NONLIN_FRSURF block.
3128     (modification to pressure gradient not yet implemented)
3129    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
3130      (for U & V) that are used for vertical advection of momentum.
3131    
3132    checkpoint48a_post
3133    o In preparation for r*, use temp. array to compute vertical transport
3134       in flux-form momentum pkg. => change results of few test-exp.
3135      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
3136                        lab_sea, natl_box & plume_on_slope
3137    
3138    checkpoint48
3139    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
3140    
3141    checkpoint47j_post
3142    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
3143    o moved adexch from forward_step to addummy_in_stepping
3144    o added exch in ctrl_map_...
3145    o aveFreq.=0. at end of cost_final to avoid overwrite in
3146      reverse checkpointing loop
3147    o Yet more changes in gmredi:
3148      * adgmredi_calc_tensor
3149        avoiding all recomputation of gmredi_slope_limit
3150      * adgmredi_x/y/rtransport
3151        added flag for excessive storing to avoid recomp. of
3152        u/v/rtans, dTdx/y/z
3153        -> this is not really necessary and very memory-consuming
3154      * adgmredi_slope_psi:
3155        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
3156      * gmredi_slope_limit
3157        re-activated full calculation of taperfct for case 'ac02'
3158    o updating verification/ adjoints of carbon, global_ocean.90x40x15
3159    
3160    checkpoint47i_post
3161    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
3162    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
3163      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
3164    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
3165    o gmredi: fix few bugs.
3166    
3167    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
3168    This will be a good checkpoint to plug into the ecco-branch.
3169    o few modif.'s to get latest version adjointed
3170      (mainly kick out code in ini_linear_phisurf)
3171    o modif's to run adjoint with exactConserv
3172    o case GM_BOLUS_ADVEC should be cleaned
3173      S/R gmredi_slope_psi should be cleaned
3174    o verification/carbon now has exactConserv=.TRUE.
3175    
3176    checkpoint47g_post
3177    o time-average AIM output: becomes independent from statvars time-average
3178      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
3179    o After TAF bug fix:
3180      Tested adjoint of gmredi package.
3181      Tests were done with checkpoint47 rather than with latest
3182      checkpoint47f_post since the latter is broken for the adjoint
3183      verification/carbon/ contains both ADM and TLM gradient checks.
3184    Here they are, before they get changed/lost/stolen.
3185    Mostly modif.'s to fix numerical sensitivities.
3186    Gradient checks OK for
3187    - GM_taper_scheme:
3188      * clipping
3189      * ac02
3190      * linear
3191      * glw91
3192      * dm95
3193      * ldd97
3194    - GMREDI_OPTIONS:
3195      * GM_VISBECK_VARIABLE_K
3196      * GM_NON_UNITY_DIAGONAL
3197      * GM_EXTRA_DIAGONAL
3198      * GM_BOLUS_ADVEC
3199    in conjunction with data.gmredi parameters to be checked in
3200    in a few minutes under verification/carbon/code/
3201    
3202    checkpoint47f_post
3203    Merging from release1_p10:
3204    o modifications for using pkg/exf with pkg/seaice
3205      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
3206        and SEAICE_EXTERNAL_FLUXES
3207      - pkg/exf CPP options EXF_READ_EVAP and
3208        EXF_NO_BULK_COMPUTATIONS
3209      - usage examples are Experiments 8 and 9 in
3210        verification/lab_sea/README
3211      - verification/lab_sea default experiment now uses
3212        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
3213    
3214    checkpoint47e_post
3215    o created a tag prior to creating a branch
3216    
3217    checkpoint47d_post
3218    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
3219      at the bottom boundary had an erroneous half slip boundary condition
3220    o added bottom drag and no slip boundary condition capabilities to
3221      oceanic pressure coordinates code
3222    o added new verification experiment global_ocean_pressure, this experiment is
3223      also described in the tutorial section of the manual
3224    checkpoint47d_pre
3225    
3226    checkpoint47c_post
3227    o Added a verification experiment for a global cubed-sphere ocean run
3228      -  verification/global_ocean.cubed32x32x30
3229      -  uses pkg/therm_seaice and pkg/bulk_forcing
3230    
3231    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
3232    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
3233      when using P-coordinate; only implemented for atmospheric config.
3234    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
3235      NOTES: requires option NONLIN_FRSURF to be "#define".
3236    o update advect_xz/results/output.txt (left from checkpoint44g_post)
3237    
3238    checkpoint47b_post
3239    Merging from release1_p9:
3240    o pkg/seaice
3241      - removed GOTO's and added taf directives
3242      - double precision constants to reduce the g77 (Linux)
3243        to F77 (SGI) differences reported in release1_p8
3244    o tools/genmake
3245      - added SGI options
3246    o verification/testscript
3247      - updated to that of checkpoint47a_post
3248    o verification/global_ocean.90x40x15/input/eedata
3249      - modified for SGI f77 compatibility
3250    o verification/lab_sea
3251      - added description of sea-ice model
3252      - added missing matlab routines
3253      - added test of thermodynamics parallelization
3254    
3255    checkpoint47a_post
3256    o new pkg: aim_v23
3257     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
3258       for now, keep the same surface forcing as before.
3259     - Part-Cell implemented into AIM; check that Heat & Water are conserved
3260     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
3261     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
3262    o add diagnostic of surface correction term in monitor output
3263    
3264    o bulk_force and therm_seaice
3265    - Two packages:  bulk_force (Bulk forcing)
3266      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
3267    - Earlier integration from Stephaine Dutkiewicz
3268      and Patrick Heimbach.
3269    - Two ifdef statements for compile time,
3270       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
3271    
3272    checkpoint47
3273    differentiable version of checkpoint46n_post
3274    o bug fix in quasihydrostaticterms
3275    o * "clean" adjoint code (in terms of extensive recomputations)
3276        can now be obtained for all GMREDI options (i.e. for
3277        - GM_VISBECK_VARIABLE_K
3278        - GM_NON_UNITY_DIAGONAL
3279        - GM_EXTRA_DIAGONAL
3280        - GM_BOLUS_ADVEC )
3281      * However, wrong gradient check problem remains unsolved.
3282      * New CPP options have been introduced for different
3283        tapering schemes
3284    o external_fields_load now part of differentiation list
3285    o pressure needs multiple storing;
3286      would be nice to have store_pressure at beginning or
3287      end of forward_step, e.g. by having phiHyd global (5-dim.)
3288      (NB: pressure is needed for certain cases in find_rho,
3289      which is also invoked through convective_adjustment).
3290    o recomputations in find_rho for cases
3291     'JMD95'/'UNESCO' or 'MDJWF' are OK.
3292    o #define ATMOSPHERIC_LOADING should be differentiable
3293    o ini_forcing shifted to begining of initialise_varia
3294    o Incorporating QNVS line search routines into MITgcm
3295      (this is separate code, and therefore not under pkg)
3296      lsopt/, optim/
3297    o Updated verification/carbon/
3298      - #define GM_VISBECK_VARIABLE_K
3299      - GM_taper_scheme    = 'ldd97'    
3300    
3301    checkpoint46n_post
3302    Merging from release1_p8:
3303    o verification/natl_box:
3304      updating new external_fields_load routine
3305    o New package: pkg/seaice
3306      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
3307      The sea-ice code is based on Hibler (1979-1980).
3308      Two sea-ice dynamic solvers, ADI and LSR, are included.
3309      In addition to computing prognostic sea-ice variables and diagnosing
3310      the forcing/external data fields that drive the ocean model,
3311      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
3312      The implied surface heat flux is then stored in variable
3313      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
3314      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
3315      non-local transport term.  Because this call precedes model
3316      thermodynamics, temperature under sea-ice may not be "exactly" at
3317      the freezing point by the time theta is dumped or time-averaged.
3318      N.B.: fairly large differences in accuracy occur across
3319            different platforms/compilers; comparison between
3320            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
3321            generated output gives:
3322       T           S           U           V
3323      C D M    c        m  s        m  s        m  s        m  s
3324      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
3325      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
3326      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
3327    
3328      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
3329    o GAD:
3330      - generated new common blocks to account for call of
3331        same gad routines with differing traceridentities
3332        (needed to modify tracerIdentity indices in GAD.h)
3333      - generated separate common blocks for case useCubedSphereExchange
3334        (Department of Futurology)
3335      - parameter lists to gmredi_?transport: added tracerIdentity
3336      - added new key indices to tamc.h
3337    o external_fields_load:
3338      - added this routine to TAF list
3339      - needed to make some common blocks global and additional storing
3340        along the same lines as exf package (checkpoint_lev?_directives.h)
3341    o exf:
3342      updated external forcing package
3343      - bug fixes carried over from ecco-branch
3344        (missing OBCS_OPTIONS.h in two routines)
3345      - enable easy to use "no forcing".
3346      - added exf I/O for atmospheric loading
3347      - added exf I/O for runoff data
3348      - transfered scaling between exf <-> MITgcm to exf namelist
3349    o Adding new verification experiment global_with_exf.
3350      This verification experiment is almost identical to the
3351      global_ocean.90x40x15 experiment, except that it uses
3352      the exf (and cal) package instead of the
3353      external_fields_load routine (cf README file).
3354    
3355    checkpoint46m_post
3356    o modified testscript to return -- when there are no lines of "%MON" output
3357    o added new flag "quasiHydrostatic" for QH mode
3358      and new routine quasihydrostaticterms()
3359    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
3360      New routine: mom_u_coriolis_nh()
3361    o fixed sign of non-hydrostatic metric terms in u and v equations.
3362      Depend on correct sign of gravitySign.
3363    o added work.pc* to .cvsignore in aim directories using ifc
3364    o introduced flag for controllin non-hydrostatic metric terms
3365    o removed gravitySign from PARM04
3366    o switched to g77/ifc from pgf77 in aim experiments
3367    
3368    checkpoint46l_post
3369    o made convective adjustment work with pressure coordinates:
3370     - changed the direction of k-loop in convective_adjustment.F for the
3371       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
3372     - adjusted the reference pressure k-index in convective_adjustment.F
3373     - adjusted the convection condition in convect.F (in analogy to
3374       calc_ivdc.F)
3375     - convective_adjustment no longer computes anything on the halos
3376     - removed the warnings about negative salinity from find_rho.F and
3377       find_alpha.F; instead the new routine look_for_neg_salinity, called
3378       at the beginning of find_rho, find_alpha, and find_beta, does a
3379       check of the entire slice, if CPP-option
3380       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
3381    checkpoint46l_pre
3382    
3383    checkpoint46k_post
3384    o fixed the verification/global_ocean.90x40x15 experiment:
3385     - new bathymetry (the world according to A., JMC, and M.)
3386     - new initial fields and forcing fields (*.bin files)
3387     - new POLY3.COEFFS (for the next release one should switch to a full
3388       equation of state: JMD95P or MDJWF)
3389     - fixed several errors and redundancies in the data file
3390     - experiment uses looped cells
3391     - added matlab directory with diagnostic scripts for plotting of output
3392    
3393    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
3394     - read AIM physics parameters from a file (data.aimphys)
3395     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
3396    
3397    checkpoint46j_post
3398    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
3399    o move wVel computation at the end of the time step, in S/R integr_continuity
3400    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
3401    o update timeave pkg for wVel diagnostic.
3402    checkpoint46j_pre
3403    
3404    checkpoint46i_post
3405    o Clean up AIM package (and keep the results unchanged):
3406      include CPP_OPTION and use IMPLICT NONE in all routines ;
3407      declare all the variables _RL ; use _d 0 for all numerical constants.
3408      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
3409    
3410    checkpoint46h_post
3411    o cleaned up the use of rhoNil and rhoConst.
3412      - rhoNil should only appear in the LINEAR equation of state, everywhere
3413        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
3414        and the dynamical equations are all divided by rhoConst
3415    o introduced new parameter rhoConstFresh, a reference density of fresh
3416      water, to remove the fresh water flux's dependence on rhoNil. The default
3417      value is 999.8 kg/m^3
3418    o cleanup up external_forcing.F and external_forcing_surf.F
3419      - can now be used by both OCEANIC and OCEANICP
3420    checkpoint46h_pre
3421    
3422     Added code to convert surface volume flux (fresh water) into
3423     a mass flux when using P coordinates in the ocean (OCEANICP).
3424     Note: It assumes you have set rho0=rhoConst=density of fresh water.
3425    
3426    checkpoint46g_post
3427    o Include a new diagnostic variable phiHydLow for the ocean model
3428      - in z-coordinates, it is the bottom pressure anomaly
3429      - in p-coordinates, it is the sea surface elevation
3430      - in both cases, these variable have global drift, reflecting the mass
3431        drift in z-coordinates and the volume drift in p-coordinates
3432      - included time averaging for phiHydLow, be aware of the drift!
3433    o depth-dependent computation of Bo_surf for pressure coordinates
3434      in the ocean (buoyancyRelation='OCEANICP')
3435      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
3436        Theta, Salinity, and Pressure in the parameter list. This routine is
3437        presently contained in find_rho.F. This routine does not give the
3438        correct density for 'POLY3', which would be a z-dependent reference
3439        density.
3440    o cleaned up find_rho
3441      - removed obsolete 'eqn' from the parameter list.
3442    o added two new verification experiments: gop and goz
3443      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
3444    checkpoint46g_pre
3445    
3446    checkpoint46f_post
3447    o Enable tangent linear (forward mode) gradient checks:
3448      - extended active file handling to g_... files
3449      - added TANGENT_SIMULATION to theSimulationMode
3450      - extended grdchk package accordingly
3451    o added tangent linear setup in verification/carbon/code_ftl
3452    o added adjoint setup in verification/front_relax/code_ad
3453    
3454    checkpoint46e_post
3455    o Added new equation of state -> MDJWF
3456      - EOS of McDougall et al., 2002, JAOT, submitted
3457      - caveat: the equation of state is only valid for a smaller (more
3458        realistic?) range of values than JMD95P/Z and UNESCO
3459      - added masks to the calculation of pressure in store_pressure
3460      - added more check values for density in check_eos (ini_eos.F), some of
3461        the old check values are out of the range of the MDJWF-eos, so don't
3462        expect perfect matches for those
3463    checkpoint46e_pre
3464    
3465    checkpoint46d_post
3466    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
3467      'OCEANICP', also initialised field pressure correctly in ini_eos in the
3468      case of pressure coordinates. eosType='JMD95Z' in
3469      combination with buoyancyRelation='OCEANICP' now causes an error.
3470    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
3471      in find_alpha/beta.
3472    checkpoint46d_pre
3473    
3474    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
3475      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
3476    
3477    checkpoint46c_post
3478    o Changes necessary for ocean in p-coordinates
3479     -  Added new buoyancy relation = 'OCEANICP'
3480     -  Added new parameters = gravitySign (this used to be contained inside
3481        the factor dRdZ which I added when we first switched to R coordinates).
3482     X GM/Redi is not compatible (yet)
3483     X bottom drag and no-slip need to be debugged.
3484    checkpoint46c_pre
3485    
3486    checkpoint46b_post
3487    o Added new equation of state -> JMD95Z and JMD95P
3488      - EOS of Jackett and McDougall, 1995, JAOT
3489      - moved all EOS parameters into EOS.h
3490      - new routines ini_eos.F, store_pressure.F
3491    o Added UNESCO EOS, but not recommended because it requires
3492      in-situ temperature (see JMD95)
3493    o Modified formatting for knudsen2.f in utils/knudsen2 and added
3494      unesco.f to be used with POLY3
3495    checkpoint46b_pre
3496    
3497    checkpoint46a_post
3498    o Added (atmospheric) pressure loading
3499      - new field in FFIELDS.h, etc...
3500      - new cpp flag ATMOSPHERIC_LOADING
3501    o Changed hFacC to _hFacC in calc_phi_hyd.F
3502    o Added SHORTWAVE_HEATING to some files for consistency
3503    checkpoint46a_pre
3504    
3505    checkpoint46
3506    further merges from release1_p5
3507    o new ctrl package
3508      - adopted from ECCO environment to enable optimization
3509      - added Eliassen Palm fluxes to controls
3510    o added Eliassen Palm flux controls to gradient check package
3511    o cost package
3512      - Compatible with new ctrl package
3513      - added Eliassen Palm cost hooks
3514      - modif's of existing cost functions
3515    o Adjoint-related bug fixes in kpp:
3516      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
3517      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
3518    o autodiff package
3519      - flow directives:
3520        + new for S/R do_the_model_io
3521        + enhanced for S/R checkpoint
3522        + new gmredi.flow
3523      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
3524        disable adcommon.h/g_common.h by default.
3525      - fixed problem for adjoint of global_max
3526    o modified verification/carbon/
3527    o New setup for adjoint of global_ocean
3528    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
3529    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
3530    o incorporated hooks for sponge layer code (external_forcing.F)
3531    
3532    checkpoint45d_post
3533    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
3534  o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S  o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
3535    (affects plume_on_slope "cg2d" output)    (affects plume_on_slope "cg2d" output)
3536    o add new parameter deltaTfreesurf for free-surface time stepping
3537    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
3538  o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B  o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
3539  o change phiMin in exp1 (to agree with documentation)  o change phiMin in exp1 (to agree with documentation)
3540  o add new flags:  o add new flags:

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