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revision 1.125 by jmc, Mon Jan 27 21:42:19 2003 UTC revision 1.1014 by jmc, Mon Aug 11 22:45:14 2008 UTC
# Line 1  Line 1 
1  $Header$  $Header$
2    $Name$
3    
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    o change FIND_RHO to FIND_RHO_2D :
8      pass arguments tFld & sFld as local (tile) 2D-arrays ; +fix EOS_CHECK.
9    o new pkg: cheapaml
10    
11    checkpoint61b
12    o exch2:
13      change index bounds in rx2_cube exchanges (new S/R: EXCH2_GET_UV_BOUNDS)
14      - no longer depend on the order sequence (N,S,E,W).
15      - 3rd exchange no longer needed (tested with 24 tiles).
16      - same modif to hand-written adjoint S/R (global_ocean.cs32x15: zero diff)
17      - exch_UV_A-grid readily available (but not yet tested).
18      comment out 3rd exch call and remove copy of V to U at SE & NE face-corners
19      (both are no longer needed) in exch_uv: no effect in forward run; but
20       get truncation error differences with adjoint exch.
21    o exch2:
22     - change index-bounds storage (moved from target to local tile,
23       more intuitive this way) ; rename/remove some variables.
24     - change utils/exch2/matlab-topology-generator & code_mods accordingly.
25    
26    checkpoint61a
27    o exch2/matlab-topology-generator:
28      fix bug in index bounds for N-S internal exchange (hard to tell if this
29      had any effect on the solution).
30    o pkg/mnc: small fix in mnc_handle_err: make sure that length of msgbuf
31      is exceeded
32    o testreport: modify syntax of awk, so that it works also with
33      awk, and not only with nawk and gawk
34    
35    checkpoint61
36    o autodiff
37      Change default for TAF usage by removing argument '-nonew_arg'
38      This changes TAF subroutine argument list (ordering of active var.)
39      Omission of this flag leads to incompatibility w.r.t. TAMC
40      To restore TAMC-compatibility, need following modifs:
41      * use adoptfile tools/adjoint_options/adjoint_tamc_compatibility
42      * use CPP option #define AUTODIFF_TAMC_COMPATIBILITY
43      Tested TAF version is 1.9.22
44      N.B.: exch2 hand-written adjoint code currently not TAMC compatible
45    
46    checkpoint60
47    --->>> This is the last checkpoint for which generating the adjoint
48    --->>> is done via the TAMC-compatibility TAF-flag "-nonewarg"
49    --->>> by default.
50    --->>> Future checkpoints will ommit this flag by default.
51    o pkg/generic_advdiff, os7mp: simplify and avoid division by zero.
52    o pkg/grdchk: Add gradient check to etan0 perturbations.
53    o pkg/exf: read ice area from file (#ifdef ALLOW_ICE_AREAMASK).
54    o pkg/autodiff: more flexibility in zeroadj.
55      model/src: modifying do_oceanic_phys.F accordingly.
56    o pkg/ctrl: Bounds for (kapgm,kapredi,eddypsi) parameter estimation.
57    o model/src and pkg/gmredi: GMREDI_WITH_STABLE_ADJOINT CPP option
58      special setup of gmredi for which the adjoint is stable
59      enough for parameter optimization.
60    o bridging the gap between eddy stress and GM.
61      -> eddyTau is replaced with eddyPsi (eddyTau = f x rho0 x eddyPsi)
62          along with a change in CPP option (now ALLOW_EDDYPSI).
63      -> when using GM w/ GM_AdvForm:
64          The total eddy streamfunction (Psi = eddyPsi + K x Slope)
65          is applied either in the tracer Eq. or in momentum Eq.
66          depending on data.gmredi (intro. GM_InMomAsStress).
67      -> ALLOW_EDDYPSI_CONTROL for estimation purpose.
68      The key modifications are in model/src/taueddy_external_forcing.F
69      pkg/gmredi/gmredi_calc_*F pkg/gmredi/gmredi_*transport.F
70    
71    checkpoint59r
72    o new S/R (pkg/mdsio/mdsio_facef_read.F) reading of sNx+1 x sNy+1 array
73      from per-face file (take S/R READSYMTILE_RS out of ini_curvilinear_grid.F);
74      fix option to read coriolis(@ cell-corner) from files with CS-grid.
75    o pkg/mnc: add some attributes to standard 1D-coordinate variables
76    o pkg/diagnostics: enforce missing_value attribute for scalar variables at
77      mass points, when using mnc for output
78      - add runtime parameter (missing_value, missing_value_int) to override
79        default (which is the value of getcon('UNDEF'))
80    o pkg/mnc: prepare mnc for the actual use of missing values with the
81      diagnostics package: small fix in mnc_cw_readwrite.template and more
82      initialisation of never used fields
83      - replace mnc_common.h and mnc_id_header.h with corresponding upper case
84      versions
85    o pkg/thsice/thsice_ini_vars.F added default initial values so that
86      thermodynamics sea ice solver does not blow up when some initial fields
87      are missing.
88    o move from external_forcing_surf.F to ini_forcing.F
89      the p-coord. hack consisting in using pLoad to set phi0surf ;
90      update output of tutorial_global_oce_in_p (affected @ truncation level).
91    o Freshen up a bit hs94.1x64x5, notably:
92      remove rotationPeriod and tRef=5*0. (adjoint only), and add
93      exactConserv=.TRUE.
94    o pkg/generic_advdiff:
95      change option GAD_ALLOW_SOM_ADVECT to GAD_ALLOW_TS_SOM_ADV which only
96      applies to files where Temperature & Salinity 2nd Order moments are used.
97    o pkg/ptracers: add second-order moment advection schemes (80 and 81);
98      this uses a dynamically allocated internal state data structure
99      (#define PTRACERS_ALLOW_DYN_STATE in PTRACERS_OPTIONS.h)
100      and requires a fortran 90 compiler
101    
102    checkpoint59q
103    o pkg/mom_vecinv: Add energy & enstrophy conserving scheme (selectVortScheme=3)
104       (from Sadourny, described by Burridge & Haseler, ECMWF Rep.4, 1977)
105    o Refresh tutorial_global_oce_biogeo, notably:
106      - change bathymetry (put back seamounts in ACC, use hFacs)
107      - change EOS (POLY3 --> JMD95Z)
108      - use Bryan-Lewis vertical diffusivity
109      - use multidimensional advection
110      - remove old virtual virtual in dic pkg, now done through ptracer pkg
111      - change a couple of parameters in dic pkg
112    o pkg/ctrl: change formula in adctrl_bound.F and add a parameter to ctrl_map_ini_gen.F
113    o pkg/obcs: change default to OBCSfixTopo = .true.,
114      - set OBCSfixTopo=.false. in exp4/input/data.obcs to reproduce old result
115      - replace "debugMode" with "debugLevel .GE. debLevB"
116    o implementation of TAF directives for gchem,cfc,dic
117    o remove "exp5" (replaced by tutorial_deep_convection).
118    o pkg/obcs: add code to fix topography gradients normal to open boundaries;
119      this requires computing the index fields OB_Jn/Js/Ie/Iw in obcs_readparms;
120      the code can be turned on by setting OBCSfixTopo = .true. in data.obcs
121      --> changes results in exp4, seaice_obcs
122    o tutorial_deep_convection :
123      update the set-up and increase resolution and domain size ; start
124      from pseudo initial conditions = output at t=120mn in order to see
125      something happening when running testreport.
126    o pkg/seaice: add os7mp as an advection scheme
127                  add check for advection schemes
128                  add a flag for restoring T and S underneath sea ice
129    o pkg/my82: add netcdf-support and diagnostics
130    o thsice pkg:
131      - Now hsMax limits snow height by turning it into ice following
132        flooding scheme (and now conserving energy)
133      - Slight rewriting of the formula in thsice_calc_thick.F
134      - Parameter rhowi eliminated to be replaced by floodFac = (rhosw-rhoi)/rhos
135      --> changes results of global_ocean.cs32x15.icedyn and global_ocean.cs32x15.thsice
136    
137    checkpoint59p
138    o gchem / dic / cfc :
139      - add useDIC, useCFC , read from "data.gchem" (& hold in GCHEM.h);
140      - add new parameter files: "data.dic" & "data.cfc" ;
141      - various re-arrangement in initialisation & header file ;
142      - fix tutorial_global_oce_biogeo for multi-threaded test.
143    o pkg/dic: test for "pickup_dic" file when restarting ;
144      if no pickup-file, can restart with a re-initialised pH (same as it did
145      before) providing pickupStrictlyMatch is set to False.
146    o change argument list of S/R PTRACERS_WRITE_PICKUP & MYPACKAGE_WRITE_PICKUP
147      + fix call to S/R GGL90_WRITE_PICKUP & DIC_WRITE_PICKUP
148    o add a "warning" (to Error msg file) when an Active Tracer is not using AB-2
149      and staggerTimeStep is off (needed for stability of Internal-wave dynamics).
150    o move out of PARAMS.h & data the last pieces of old-ptracer code: tauTr1ClimRelax,
151     & lambdaTr1ClimRelax ; put those 2 params in PTRACERS_PARAMS.h & data.ptracers
152       (note: not clear to me what lambdaTr1ClimRelax is still used for ...)
153    o pkg/mom_vecinv: - new parameter "selectVortScheme" to select which
154       scheme to use for vorticty-term ;
155     - compute upwindVorticity=T case within mom_vi_u/v_coriolis_c4.F
156       (with default selectVortScheme, return to original discretisation)
157     - remove weird combination (e.g.: upwindVorticity & highOrderVorticity)
158    o pkg/seaice: add a line to the summary to indicate grid type (B/C)
159    o in mom_calc_visc, fix average value of viscAh_W & viscA4_W next to the
160      bottom ; only used with variable horizontal viscosity and non-hydrostatic.
161      also fix diagnostics VISCAHW & VISCA4W.
162    
163    checkpoint59o
164    o dome/code/obcs_calc.F: avoid division by zero (detected using gfortran).
165    o change the loop ordering in most gad_*_adv_x.F to improve vectorization:
166      move a few statemens out the main loop into separate loops
167    o pkg/shelfice:
168      - sort out freshwater flux; convert freshwater fluxes to mass fluxes
169        (kg/m^2/s), does not break tests, because in verification/isomip,
170        rhoConstFresh=rhoConst (by accident)
171      - rearrange computation of tLoc, sLoc, pLoc to make code more efficient
172      - move S/R find_rho_scalar, pkg/ecco/sw_ptmp.F, pkg/ecco/sw_adtg.F into
173        new file model/src/seawater.F, so that they are available for all pkgs.
174      - convert potential temperature into in-situ temperature. This changes the
175        isomip tests => update tests
176    o add a flag writePickupAtEnd (default=true) to be able to suppress
177      writing a pickup at the last timestep
178    o tools/mpack-1.6 :
179      - disable automake (not working) and autoconf (not needed).
180      - update to version 1.6.4 which fix MD5 code on some 64 bits platforms
181        also cleaner with much less compilation warnings.
182    o pkg/profiles:
183      rename profiles_interp_mean_genericgrid as profiles_interp_mean_gg
184      (for "less than 32 characters name" compiler requirement)
185    o pkg/obcs and pkg/exf: added capability to specify seaice open boundary
186      conditions that have a different sampling frequency than S/T/U/V obcs
187    o pkg/diagnostics (stats-diags):
188      - fix global Min/Max in case 1 processor get only empty tiles
189    o genmake2: replace (4 times)
190         make genmake_tc_1.o >> genmake_warnings 2>&1
191      with
192         COMM="$CC $CFLAGS -c genmake_tc_1.c"
193         echo $COMM >> genmake_warnings
194         $COMM >> genmake_warnings 2>&1
195      to make genmake2 always see the value of CC as specified in the optfile.
196    o generic_advdiff: - prather advection scheme (SOM) coded for CS-grid.
197      - add diagnostics for 1srt & 2nd Order moments and sub-grid variance.
198      - modify verification advect_cs test to test SOM-advection on CS-grid.
199    o pkg/ctrl:
200      - Rewrite of ctrl_map_ini_ecco.F,
201        introducing a generic routine (ctrl_map_ini_gen.F).
202      - Modification of ctrl_bound/adctrl_bound handling control vector bounds.
203    
204    checkpoint59n
205    o pkg/diagnostics: for large number of diagnostics, store diagnostic mate
206      number in dedicate array "hdiag":
207      - new version of S/R DIAGNOSTICS_ADD2LIST : DIAGNOSTICS_ADDTOLIST
208        with 1 more argument (mate number); modify old version DIAGNOSTICS_ADD2LIST.
209      - many small changes (integer format) for large number of diagnostics
210      - start to use DIAGNOSTICS_ADDTOLIST (necessary for diagnostics with
211        a counter mate) in pkg diagnostics, ptracers, thsice & aim_v23.
212    o add parameter rotateGrid and Euler angles EulerPhi/Theta/Psi. For
213      usingSphericalGrid, this allows to define the rotated grid coordinates
214      via phiMin/thetaMin/dxSpacing/dySpacing, etc., but then re-compute the
215      geographical coordinates according to the inverse of the rotation defined
216      by the Euler angles, so that Coriolis parameter and online-interpolation by
217      exf works with the geographical coordinates on XC/YC/XG/YG.
218      Naturally, this feature does not work with all packages, so some
219      combinations are prohibited in config_summary (flt, flt_zonal, ecco,
220      profiles), because there the coordinates are assumed to be regular
221      spherical grid coordinates.
222    o pkg/gmredi,ctrl,ecco,autodiff,grdchk and model/src,inc:
223      - introduce isopycnal diffusion coefficient control.
224    o tools/adjoint_options:
225      - additional control vector components.
226    o pkg/mnc: have mnc create marginally meaning full coordinate variables
227      (that is the grid indices) if usingCurvilinearGrid and NOT EXCH2
228    o pkg/mypackage:
229      - add example of read/write pickup for state-var ;
230      - add entry points to the main code for state-vars diags & write-pickup.
231    o pkg/exf: rewrite of exf_getffieldrec.F to properly deal with year
232      transitions for useExfYearlyFields
233      - add new subroutine that determines the file to read from for
234        use*YearlyFields = .TRUE. and .FALSE.
235      - add a verification experiment to global_with_exf that tests
236        useExfYearlyFields with USE_EXF_INTERPOLATION defined
237    o pkg/obcs/exf: add useOBCSYearlyFields (=.FALSE.) to obcs with exf in
238      analogy to useExfYearlyFields; rearrange obcs_prescribe_read: two new
239      subroutines (which could be generated from a template, because they are
240      almost identical), for now they are included in obcs_prescribe_read.F for
241      simplicity
242    o pkg/exf:
243      - add a little more diagnostic to exf_interp_read (in analogy to
244        mds_read_field, can be turned off with debugLevel < debugLevA=1)
245      - improve vectorizability of exf_interp for TARGET_NEC_SX, makes code
246        ugly but fast by unrolling short inner loops, inserting a unroll=8
247        directive in routine lagran, and splitting a loop and making do while the
248        outermost loop (the latter requires the intoduction of index arrays)
249    o pkg/obcs: replace obcs_apply_area/heff/hsalt/hsnow with obcs_apply_seaice
250    o pkg/seaice: moved DIFFERENT_MULTIPLE from seaice_model to seaice_dynsolver
251      http://forge.csail.mit.edu/pipermail/mitgcm-devel/2008-January/003173.html
252    o verification/seaice_obcs: updated for restart test and latest options
253    o pkg/seaice: add a new flag SEAICEuseTEM to use a slightly different
254      ice rheology (so-called truncated ellipse, that gets rid of tensile stress);
255      for now this is only available for the C-grid code and also within
256      #ifdef SEAICE_ALLOW_TEM, because this option may slow down the EVP code
257    
258    checkpoint59m
259    o pkg/seaice: use different time constant for melting (SEAICE_gamma_t)
260      and freezing (SEAICE_gamma_t_frz) ice due to mixed layer temperature
261    o gad_som : fix flux output (& diagnostics) to have same units as other  
262      advection scheme fluxes (was previously multiplied by deltaT).  
263    o added verification/seaice_obcs both to test seaice open boundaries
264      and to provide an example matlab scrpt for generating them
265    o added verification/lab_sea/input.salt_plume for testing pkg/salt_plume
266    o pkg/salt_plume: clean up salt_plume_frac.F to
267      remove redundancy in PlumeMethod 1 and 4
268    o pkg/kpp: added saltplume diagnostics
269    o pkg/obcs and pkg/seaice:
270      - do not set uice and vice to zero when OB*icefile are unspecified
271      - OBCS_SEAICE_AVOID_CONVERGENCE is undefined by default
272      - moved seaice tracer obcs after call to seaice_growth
273    o pkg/salt_plume: added various options for salt plume depth
274      criterion and for vertical distribution of the salt
275    
276    checkpoint59l
277    o pkg/ptracers: new version of ptracers pickup:
278      read meta file and write only fields which are needed to restart.
279      ( same logic as main pickup file ; also using pickupStrictlyMatch )
280    o pkg/seaice:
281      - add timescale for melting due to warm mixed layer as a means of
282        setting SEAICE_availHeatFrac more conveniently
283      - add a CPP-flag/runtime parameter check for flooding algorithm
284      - reformulated availHeat in seaice_growth.F to be independent of AREA
285    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
286      unit changes
287    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
288    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
289      SX vector computer.
290    o pkg/seaice:
291      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
292        seaice forcing fields can now be read only through pkg/exf
293      - removed some unused halos
294    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
295    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
296      or U/VICE from U/VWIND before computing U/VSTRESS
297    
298    checkpoint59k
299    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
300      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
301    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
302      all experiments pass when compile with un-initialised var. checking option.
303    o added pkg/salt_plume
304    o script to test restart (for now, in MITgcm_contrib/jmc_script)
305    o pkg/seaice: new read/write pickup version.
306      read meta file and write only fields which are needed to restart.
307      ( same logic as main pickup file ; also using pickupStrictlyMatch )
308    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
309    o lab_sea.hb87: modify the domain & update output.hb87.txt :
310      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
311      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
312      process. Fixed here by closing the domain at the Northern boundary.
313    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
314    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
315      a set of consecutive levels in/from a 3-D array.
316    o pkg/ptracers:
317      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
318      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
319    
320    checkpoint59j
321    o in pkgs: dic, obcs, offline, rbcs:
322      standard way to compute coeff. for time interpolation between 2 time reccords
323      which retains full precision (& make results less dependent on compiler).
324      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
325    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
326      packages instead of reading ice cover and wind speed separately
327    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
328     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
329      to allow to compile customized code before the update)
330    o cleaning-up:
331      - fix CPP instruction syntax in pkg/obcs
332      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
333        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
334      - fix some threads issue in IO parts.
335    o pkg/dic:
336      - add tons of "_d 0" (--> much better testreports !)
337       and then update outputs of tutorial_global_oce_biogeo
338    o pkg/mom_fluxform:
339      add a special version of momentum advection intended to conserve momentum
340      next to a bathymetry step or a coastline edge. (default = off = #undef)
341    o new read/write pickup version:
342      - for now, only implemented for main (mdsio) pickup file.
343      - write out only what is needed to restart; merge pickup_nh , pickup_ph
344        and main pickup together.
345      - read meta file; read only what is needed to restart; stop if a field
346        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
347        if it make sense (even if the restart is not perfect).
348      - if no meta file, assume that pickup to read corresponds exactly to
349        a pickup that would currently be written.
350      - read pickup written in the old format (until checkpoint59i) if it
351        recognizes an old meta file (no field-list).
352      - add a meta file in exp. which starts from a pickup: 2 cases:
353        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
354         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
355        b) a meta file describing the content of the associated pickup file
356         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
357    o pkg/mdsio & pkg/rw:
358      - new routine to read a meta file ; new set of routine to read
359        Multiple-fields file (with meta file).
360    o added open boundary conditions capability for seaice
361        HSNOW, HSALT, UICE, and VICE
362    
363    checkpoint59i
364    o adjoint:
365      * fix multiDimAdvection adjoint
366        (partial recomputation problem by TAF for fVerT(:,:,kDown)
367        and comlev1 size definition (maxpass vs. max. number of tracers)
368      * verification/global_ocean.90x45x15 adjoint now tests
369        NLFS and multiDimAdvection using DST3 (=30)
370      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
371    o pkg/kpp: add "_d 0" to real constant (if missing);
372      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
373      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
374    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
375      for internal parameters related to restart process (formerly from PARAMS.h)
376      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
377    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
378      as argument. (only atm2d & obcs write_pickup have not yet been updated)
379    o pkg/monitor:
380      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
381      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
382      - account for deep Atmosphere factor and density factor (anelastic)
383    o added open boundary conditions capability for seaice HEFF and AREA
384    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
385      thermodynamics
386      - requires a little reorganization, which affects the testreport results
387        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
388        so that now the conservative form is tested
389      - add a few comments
390    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
391    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
392    o add new diagnostics to seaice: advective, diffusive fluxes (only for
393      multidim-advection, for scheme 2 they are not filled) and transports,
394      thermodynamic growth rates
395    o change units of EmPmR (inside the code, + within coupling interface)
396      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
397      Affects results @ truncation level (cg2d match) and update output of
398       experiments: lab_sea(6), global_ocean.90x40x15(10),
399      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
400      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
401      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
402      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
403    
404    checkpoint59h
405    o pkg/exf:
406      - improve vectorization by moving if-statement out of loops in
407        exf_mapfields, exf_radiation
408      - exf_bulkformulae.F: introduce 2D fields and vectorize code
409    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
410    o testreport:
411      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
412        monitor & update offline_exf_seaice exp. output.
413      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
414    o pkg/seaice:
415      - bug fix in the evp solver: boundary conditions were affected be
416        masking of zMax/zMin (changes results)
417      - minor bug fix in boundary conditions in seaice_calc_strainrates
418        (changes results for no_slip)
419      - seaice_lsr.F: make interpolation of eta dependent on boundaries
420      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
421      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
422        stress formulation and no-slip boundary conditions
423    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
424      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
425    o pkg/seaice: a first HSALT time stepping equation has been checked in
426    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
427      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
428      without requiring DO-IF statements
429    o pkg/thsice:
430      use continuous power-law function for partition of energy between lateral
431      melting/freezing and thinning/thickening ; old code using step function
432      still available with #undef THSICE_FRACEN_POWERLAW
433      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
434    o testreport: change AD testing : check against results/output_adm.txt
435      using same scripts as for forward test.
436    
437    checkpoint59g
438    o adjoint testing: in preparation for changing testreport:
439      - output format: cost and grad written on separated lines
440      - ad output results in directory "results" (instead of "results_ad")
441    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
442    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
443    o pkg/ecco: allow user defined cost function contributions
444    o testreport:
445      Allow to choose (per experiment) the list of tested output variables
446       and the main variable (used to issue a pass/FAIL ) ;
447      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
448      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
449      Also modify printing of summary:
450       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
451       b) echo the list of tested variables in the individual summary.txt of
452          each experiment.
453    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
454      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
455      (but still depend on the tile decompostion of the domain).
456    o pkg/seaice: change a discretization detail to make the B-grid code
457      "more symmetric". This change is likely to remove all "ridges/leads" that
458      where quasi-aligned with the grid in B-grid solutions. It may also be
459      the solution to the stress coupling issues with the B-grid.
460    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
461      remove .cvsignore from input dir. (since testreport no longer run here).
462    o pkg/thsice:
463     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
464     - fix reshaping of sea-ice just after advection:
465       melt all the ice only if ice-volume is too small.
466     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
467       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
468     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
469    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
470      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
471    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
472      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
473      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
474      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
475      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
476      -> update output.txt
477    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
478     this affects truncation error: -> update output.txt of exp:
479      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
480      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
481    
482    checkpoint59f
483    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
484    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
485      a bounded range (in forward mode)
486    o pkg/ecco, ctrl, autodiff and mom_common:
487     internal parameter controls, completements of implementations
488    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
489    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
490      (not seem any difference in testing results).
491    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
492       at face corners.
493    o pkg/generic_advdiff:
494     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
495      loop range indices for computing vertical advection tendency
496      and do the calculation in the interior only (no overlap) ;
497      for now, only implemented for SOM advection (to save CPU time).
498     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
499    o exch2 adjoint
500      First set of changes:
501      - add exch2 hand-written adjoint templates
502      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
503        This will require cleanup in pkg/autodiff/*.F
504        (changed routines currently kept separate in verif. code/)
505      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
506        that used to hide exch2 or cubed-sphere specific code
507        (commented via 'cph-exch2')
508    o pkg/seaice
509      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
510    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
511       output of global_ocean.cs32x15.thsice .
512    
513    checkpoint59e
514    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
515      for B-grid vector (not yet tested) and C-grid vector (<- only used
516      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
517    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
518      (#ifdef ALLOW_SALT_PLUME)
519    o gather_2d/scatter_2d: removed halo regions
520    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
521      scheme and the corresponding test case (under front_relax dir). For now,
522      only available with Skew-flux form and not yet tested in realistic set-up.
523      adjoint: store directives updated, but gradient checks deteriorated,
524      so maybe GM/Redi adjoint is now broken.
525    o seaice adjoint
526      * add AREA, HEFF, HSNOW as control variable
527        (should not change lab_sea results)
528      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
529    o pkg/seaice:
530      * added computation of saltFlux in seaice_growth;
531        For time being, sea ice salinity is assumed constant
532        contribution of snow flooding to freshening of sea ice is neglected.
533        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
534        defaults to 0.0 in order to maintain backward compatibility.
535        Typical values for SEAICE_salinity are 4 to 10 g/kg.
536      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
537      * added SEAICE_availHeatFrac, which specifies fraction of surface level
538        heat content used to melt or grow ice
539      * commented out cap of HICE: it helps keep ice thinner
540      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
541      * applied OBCS T/S mask to HEFFM sea ice mask
542    
543    checkpoint59d
544    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
545     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
546     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
547    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
548     and change default value of parameter "GM_Small_Number";
549     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
550       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
551       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
552    o pkg/ecco: cost function when applying pkg/smooth to controls
553    o pkg/ctrl: add forcingPrecond run time parameter
554    o pkg/seaice:
555     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
556     - fix bug in metric terms of u-equation in LSR solver (implicit part),
557       changes verification/lab_sea
558     - rearrange implicit part of u-equation in LSR solver to make it easier to
559       read, understand, and debug. This causes changes at the truncation level.
560     - fix (serious) bug in the boundary conditions (sign error in the implicit
561       part) of the LSR solver. Changes all LSR results.
562     - fixed problem with HSNOW initialization to avoid thick snow when AREA
563       is initilized with small values - does not change lab_sea results.
564     - added HsnowFile initialization capability
565    o pkg/smooth: addition to model/src and pkg/ctrl so allow
566     initialization of pkg/smooth and application to control vector
567    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
568    o dependencies: pkg/profiles requires pkg/cal
569    o pkg/profiles:
570     - added option ALLOW_PROFILES_GENERICGRID
571         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
572         that interpolation information (grid points and coefficients) is provided
573         within the netcdf input files.
574         -> sample matlab scripts can be found in MITgcm_contrib/gael
575         that allow you to prepare netcdf input files.
576     - also modified: cleaner include statements, cleaner error print statements,
577       cleaner stops when error, and more tests of the netcdf input files consistency.
578    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
579    o pkg/seaice:
580     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
581       requires a new routine: seaice_diagnostics_fill.F
582     - make sure that seaice does not move if not forced (pressure replacement
583       method, Hibler and Ip, 1995), changes results
584     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
585     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
586       It is turned off by default (=-1.), because it changes the results.
587     - make it possible to read AREA from a file, too.
588    
589    checkpoint59c
590    o add S/R and diagnostics for oceanic mixed-layer depth
591    o move GMRedi call after all vertical mixing schemes (including KPP)
592    o pkg/thsice:
593     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
594      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
595    o pkg/obcs:
596     - bug fix for balance code
597    o pkg/seaice:
598      - allow values of SEAICE_elasticParm > 1
599      - add new parameter SEAICE_evpTauRelax as an alternative
600        to SEAICE_elasticParm
601      - make lsr boundary conditions free slip (by default), changes result
602      - add code for no slip boundary conditions for lsr
603      - set minimum of zeta to zero (and not 4e8) (changes results)
604      - add a cap on AREA after advecting AREA if seaice_growth is not called
605    o change calculation of Visbeck K:
606      - no longer depend on tapering scheme; instead, compute slope (limited
607        by GM_maxSlope). this is equivalent to what was comuted before with
608        clipping or linear tappering.
609      - fix vertical averaging (wrong by 1/2 level)
610      - leave the old version (but will not be maintained) within
611        #ifdef OLD_VISBECK_CALC / #endif
612      - update output of exp. ideal_2D_oce
613    o change error catch in calc_r_star to improve vectorization
614    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
615      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
616    o adjoint:
617      Re-organized adjoint checkpointing according to Matt Mazloff
618      (but with modifs/completions/cleanups)
619      Storing is now bundled into large arrays to optimized I/O
620      (and second step in cleanup of the_main_loop)
621    
622    checkpoint59b
623    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
624      - export/import (between ocean & coupler) fields needed for ocean DIC.
625    o pkg/seaice:
626      - get rid of three more exchanges seaice_calc_viscosities (required
627        different loop boundaries in seaice_lsr and seaice_ocean_stress)
628      - bug fix in seaice_ocean_stress (update of lab_sea required)
629      - reduce loop boundaries to necessary minimum also in seaice_evp
630      - go back to the old way of computing deltaC/Z as the adjoint likes that
631        better
632    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
633      passive tracer to an Age Tracer) + update output.txt
634    o pkg/exf:
635      - implement A-grid / C-grid selection for wind-stress input files.
636      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
637      for now, in exf_bulk_largeyeager04.F only :
638      - change implementation for case where windspeed + 2. components wind-stress
639        are read-in. AND use rhoConstFresh to convert evap.
640    o pkg/seaice:
641      - use correct EXCH_UV for wind-forcing (on A-grid).
642      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
643        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
644    o pkg/exf:
645      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
646      EXF_INTERPOLATION:
647      - merge global_with_exf/code version of exf_interp_read.F
648        to the main code ;
649      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
650        reading the file ; Important: This options needs to be defined to recover
651        previous code.
652        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
653      - no longer loose real*8 precision along the way when using exf_iprec=64.
654    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
655      - change discretisation of evp-solver in order to avoid another exchange
656        (changes lab_sea) and clean up a little
657      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
658        help the adjoint (this also changes the results slightly)
659      - add a few "_d 0" where they had been missing in seaice_evp.F
660      - cleaning up: remove unused seaice_calc_rhs.F
661    o pkg/exf: some cleaning-up:
662      - change various "constants" into runtime parameters
663      - cleaned-up Large&Yeager04 routine which should eventually
664        replace exf_bulkformulae.F (changed names of S/R and CPP)
665        and merged various ALLOW_ATM_WIND options
666     only used with thsice pkg (in thsice_get_exf.F):
667      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
668        which are used when useStabilityFct_overIce=TRUE (= the default)
669      - change default values of ice & snow emissivity and scale downward LW
670        by ice & snow emissivity.
671    o pkg/thsice:
672     fix few little problems, in thsice_calc_thickn.F:
673      - growth vertically (and not laterally) if iceFrac == iceMaskMax
674      - melt only laterally if hIce < hThinIce (as the comments say)
675      and in thsice_extend.F:
676      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
677      - start to form ice as soon as the minimum ice-volume is reachable.
678     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
679      and cpl_aim+ocn
680    o pkg/kpp
681     - move computation of surface related input fields to KPP into a new
682       subroutine kpp_forcing_surf.F
683     - remove wrong (within bi,bj loops) EXCH calls.
684     - little cleaning (add argument myThid in last position, cvs header ...)
685     - for now, fix conservation problem by exchanging KPPviscAz (may not
686       be the best fix)
687    o pkg/seaice
688     - check for inconsistent evp parameter/cpp-flag combination
689     - remove leftover errIO flat for obsolete name list error handling
690    o OpenAD
691     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
692    
693    checkpoint59a
694    o pkg/seaice: some parameter clarifications and a little bit of clean up
695    o pkg/thsice: rename run-time parameters:
696       himin       -> hIceMin
697       himin0      -> hThinIce
698       hihig       -> hThickIce
699       i0          -> i0swFrac
700       transCoef   -> bMeltCoef
701       frac_energy -> fracMelting
702      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
703       with default values (for now) that do not change the results.
704      remove old version of thsice vars advection in pkg/seaice.
705    o in FFIELDS.h:
706      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
707      - make pLoad & sIceLoad always available (but still only used if
708         ATMOSPHERIC_LOADING is #define).
709    o pkg/kpp: replaced _KPP_RL with _RL
710    o bug fixes for vertical diffusivity computations when both KPP and
711        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
712        are no longer updating the vertical diffusivity array
713        (passed as argument) but are (re-) setting those arrays.
714    o pkg/seaice: fix bug in evp solver, while doing that
715      - change (improve?) discretization of stress computations for both
716        cgrid-lsr and evp solver
717      - add a new routine to compute strain rates
718      - the above changes lab_sea results
719      - add no slip conditions for evp solver (off by default), lsr-version
720        may follow
721      - fix exchange for shear at Z-points (does not change lab_sea)
722      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
723        (to force the user to pick a time step since there is not "safe" way
724        of choosing it)
725      - add principal stress diagnostics
726      - rearrange fields for evp a little to avoid having to call a: too many
727        exchanges and b: exchanges for stress trensor components which we do
728        not have.
729      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
730        of evp, complete rewrite for lsr case (latter is does not yet work
731        in all cases)
732    o pkg/kpp: add code to have mixing in shelf ice caverns
733      - add myThid to all kpp routines (long overdue)
734    
735    checkpoint59
736    o pkg/exf:
737      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
738        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
739      - move exf header files from lower_case.h to UPPER_CASE.h ;
740        add missing cvs Header & Name
741      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
742      - add namelist param. selectStressGridPosition, exf_monFreq
743      - retire many _CLIM routines, and remove data.exf_clim
744        + params moved to data.exf
745        + climsst, climsss now handled by exf_set_gen, i.e.
746          climss?period=0 refers to constant field,
747          climss?period=-12 to monthly forcing
748      - split up namelists in data.exf
749    o pkg/seaice:
750      - remove seaice_exch and seaice_exch_uv
751      - remove superfluous exchange of theta
752      - add myThid to seaice_budget_ocean/ice
753      - add new interface for atmospheric wind forcing (C-grid only)
754        + new routine
755        + two new field (taux, tauy for stress over ice)
756        + removed one global field (DAIRN) for C-grid case only
757    o pkg/thsise
758      - 2nd set of modifs for thsice adjoint in conjunction with exf
759    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
760    
761    checkpoint58y_post
762    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
763      vertical diffusivity, similar to that in MOM4; turned on using
764      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
765      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
766    o Added capability for 3D specification of background vertical diffusion
767      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
768      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
769      "data" file that contains the 3D vertical diffusivity coefficients.
770    o ice dynamics (pkg/seaice) with thsice thermodynamics:
771      - add code within pkg thsice to advect & diffuse sea-ice fields
772      similar to (and will replace) what has been added in  seaice_advdiff.F,
773      but: - conserving Mass, Heat & Salt.
774           - better when using non-linear advection scheme (not yet fully tested)
775           - can also be used in atmospheric set-up (for now, only the diffusion).
776    
777    checkpoint58x_post
778    o IO option for global-file compact format:
779      - add options when generating topology (utils/exch2/matlab-topology-generator)
780      - add I/O capability (pkg/mdsio).
781      - adapt utils/matlab/rdmds.m to read this format.
782      for now long-line format not yet supported by pkg/mdsio (& exch2).
783    o shelfice: add a few diagnostics
784    
785    checkpoint58w_post
786    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
787      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
788      (and replace horiVertRatio in NH code).
789      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
790                         and tutorial_plume_on_slope (sensitive to truncation)
791    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
792      directly to drive seaice model (C-grid only)
793    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
794     - reintroduce computation of wind from stress,
795     - compute tau (in exf_bulkformulae.F) from windstress averaged to
796       mass points to avoid tau = 0
797     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
798    o rdmnc.m: make it work with "global" files created with gluemnc
799    o rdmnc.m : some improvements in dealing with singleton dimension
800      (tested on all testreport mnc output files).
801    o genmake2: disable pkg/profiles if netcdf test fails.
802    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
803    o move call to cal_readparms up to make calendar parameters/variable available
804      to all packages
805    
806    checkpoint58v_post
807    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
808      useDynP_inEos_Zc tested.
809    o pkg/exf: changes to properly interpolate/mask/scale initial fields
810    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
811      and portions thereof.  See read_cs.txt for description and examples.
812    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
813      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
814      following the great-circle arc between those 2 points.
815    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
816      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
817    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
818     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
819     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
820     - still needs work (not working with some options ; efficiency to improve)
821       and serious testing.
822     - use this scheme for temperature & salinity in 2 advection test exp.:
823       advect_xy & advect_xz, respectively.
824    
825    checkpoint58u_post
826    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
827    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
828    o testreport: add option "-skipdir" to skip some test.
829    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
830      momentum calculation.
831    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
832    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
833      remove checkpoint.F and the_correction_step.F (no longer used);
834      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
835    o add option (linFSConserveTr) to correct for tracer source/sink due to
836      Linear Free surface
837    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
838    o pkg/thsice: fix reading mnc-pickups
839    
840    checkpoint58t_post
841    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
842    o pkg/mdsio:
843     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
844       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
845       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
846     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
847     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
848       either MDS_READ_FIELD or MDS_WRITE_FIELD )
849     - new S/R (to replace MDSWRITEMETA), which allows to write more
850       informations (variable names, time ...) to meta files.
851     - modify rdmds.m to give back the meta file content.
852    o pkg/diagnostics: change vertical interpolation to be safer, and more
853       flexible (define p-levels to interpolate to in data.diagnostics);
854      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
855       diagnostic pointer.
856    o pkg/seaice: more cleaning up of seaice_growth, added many comments
857    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
858    o fix multi-category seaice:
859     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
860       SEAICE_MULTICATEGORY
861     - fix short wave heat flux
862    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
863       and allow to use EVP solver. Change forward lab_sea: test both EVP
864       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
865    o Initial check-in of lab_sea adjoint
866      (very similar to natl_box_adjoint/code_seaice)
867      * used C-grid and EVP solver
868      * used KPP, GM/Redi
869      * uses inAdExact=.TRUE.
870      * gradient checks fail for both ADM and TLM
871        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
872        f.d. gradients actually seem more problematic than ADM, TLM gradients;
873        issue is related to forward mismatch between g77 an ifort
874    o pkg/seaice: overhaul of thermodynamics
875     - growth.F and groatb.F are replaced by new routine seaice_growth.F
876     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
877     - move a few global fields out of SEAICE.h into seaice_growth.F and
878       make them 2D (FICE/QNETO/ ...)
879     - remove FO (it is the same as QNETO)
880     - introduce a few local fields to avoid modifying external fields such
881       as atemp, etc.
882    
883    checkpoint58s_post
884    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
885      changed exf_set_gen.F so that
886        genperiod=0 means input file is one time-constant field and
887        genperiod=-12 means input file contains 12 monthly means
888    o CG2D: use pre-computed solver main-diagonal (stored in common block);
889      this affects truncation error ; generate new output file for exp. which
890      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
891        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
892        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
893        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
894        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
895        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
896    o start implementation of deep-atmosphere and anelastic formulation
897    o verification: remove 2nd copy of input files and use script "prepare_run"
898      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
899    o mom_common/vecinv/fluxform: fix a few initialisation isssues
900    o profiles: fix for multithreaded case
901    
902    o diagnostics: rename few diags:
903      s/'PRESSURE'/'RCENTER '/g
904      s/'TICE    '/'oceFreez'/g
905      s/'TAUX    '/'oceTAUX '/g
906      s/'TAUY    '/'oceTAUY '/g
907      s/'SWFLUX  '/'oceQsw  '/g
908      s/DIFx/DFxE/g
909      s/DIFy/DFyE/g
910      and add few ocean-forcing diagnostics:
911      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
912    o modifications to pkg/seaice/growth.F and budget.F, which change results of
913      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
914      as actual snow thickness.  It now refers everywhere to effective snow
915      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
916    
917    checkpoint58r_post
918    o modifications to pkg/seaice/growth.F, which change results of
919      lab_sea experiment: fixes pertain to melting snow over open water, to
920      masking EVAP under sea ice, and to using the correct AREA variable for
921      computations of EVAP, PRECIP, HSNOW, and GHEFF
922    o add ability to read bathy, salt, and theta using MNC (off by def)
923    o add flooding algorithm and advection of HSNOW for pkg/seaice;
924      both are turned off by default and do no change any results
925    o seaice advection with pkg/thsice: a step toward the use of non-linear
926      advection scheme, but #ifdef or commented out for now (requires more EXCH).
927    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
928      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
929      in natl_box (affects results @ truncation level: update output.txt)
930    o multi-threading and IO:
931      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
932      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
933        (needed to work with SingleCpuIO): tested in all verif. exp.
934    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
935      affects the results (but none of the verification test uses this scheme).
936    o Adding some pkg/diagnostics capability to pkg/seaice
937      (will certainly be subject to changes)
938    o ctrl: adding new control variables:
939      lwflux, lwdown, evap, snowprecip, apressure, runoff
940    
941    checkpoint58q_post
942    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
943      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
944      high_res_cube configuration by 4% on Columbia.
945    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
946      add (in global_with_exf/code) a version of EXF_INTERP_READ without
947      dynamical allocation (seems to work in multi-threaded).
948    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
949      single CPU io) so that TAF does not have to see EESUPPORT.h
950    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
951    
952    checkpoint58p_post
953    o obcs: stop if obcs is used with useCDscheme = .true.
954    o shelfice:
955     - fix a sign error so that no slip at shelfice interface works
956     - remove stop for combination non-hydrostatic code and shelfice. That does
957       not mean, that the results are correct, but at least they are numerically
958       stable
959    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
960    o added adjoint exch routined for all exch*3d* routines
961      and updated flow directives
962    
963    checkpoint58o_post
964    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
965      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
966    o change controling S/R for writing pickup file (new S/R do_write_pickup)
967      and clean-up reading/writing of pickup files.
968    o fix local version of read/write pickup (NH part) in rotating_tank/code
969    o simplify EXCH interface:
970     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
971     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
972    o added the regrid package
973    o shelfice:
974     - add a simple boundary layer scheme to reduce noise
975     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
976    
977    checkpoint58n_post
978    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
979       local variable (not in common block).
980    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
981      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
982      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
983        to work with SingleCpuIO.
984    o add "_d 0" to real constant of pkg/cfc subroutines ;
985       update exp. cfc_exemple & tutorial_cfc_offline output files.
986    o multi-threading and IO:
987      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
988        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
989      - barrier before and after reading.
990      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
991      - avoid using MDS_WRITELOCAL for LAND pkg output.
992      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
993        common-block variables ; Allows multi-threading with master-thread IO.
994    o change default MAX_NO_THREADS from 32 to 4 ;
995      and stop cleanly when MAX_NO_THREADS is too small.
996    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
997    
998    checkpoint58m_post
999    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
1000       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
1001    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
1002       keep global_ocean.90x40x15 (for AD testing) with former secondary test
1003       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
1004    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
1005        add MITgcm_tutorials (= code + all the tutorials)
1006    o ecco, option to compute cost for total ssh (mean+anom)
1007    o consistent with addition of ptracer and ssh in pkg/profiles
1008    o profiles: adding ptracer and ssh
1009    o testreport: change multi-test output-file name
1010      (from output.txt.{name} to output.{name}.txt)
1011    o profiles: now ok for mutli-tiles case
1012    o seaice: add 4 parameters for different advection schemes for area,
1013      (effective) seaice thickness, enthalphy, and snow height. Their default
1014      is the standard parameter SEAICEadvScheme
1015    o calc_gw:
1016     - add cosFacU in zonal viscous flux (harmonic.visc.).
1017     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
1018       of tutorial_plume_on_slope.
1019    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
1020    o calc_gw: true flux-form, account for horizontal grid spacing.
1021      update rotating_tank results, but not plume_on_slope (affected at
1022      truncation level, 11 digits).
1023    
1024    checkpoint58l_post
1025    o calc_gw:
1026     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
1027     - remove side-drag for now (need to fix it); update plume_on_slope results.
1028     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
1029    o commit code to make SST/SSS weights spatially variable
1030      (based on either variable in-situ or variable initial T/S weights)
1031    o pkg/ecco:
1032      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
1033        now based on horizontally varying weights wthetaLev, wsaltLev
1034      * cost_averagesflags now returns year indices in addition to day, month
1035      * sflux balance is performed on annual basis
1036        (sflxumm, sfluxmm2, bal_sfluxmm)
1037      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
1038        including separate counting and multipliers
1039    o pkg/rbcs
1040      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
1041    
1042    checkpoint58k_post
1043    o testreport:
1044     - always build in dir. "build" (if not there, mkdir build instead of building
1045       & running in input)
1046     - run in dir run (if it exists), in build otherwise.
1047     - call prepare_run (if input/prepare_run exists)
1048     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
1049    o pkg/exf modifications to interpolation and rotation routines for more
1050       reasonable treatment of North Pole singularity: for tracers North Pole
1051       value is set to northernmost zonal-mean value, for zonal velocity it is
1052       set to zero, and for meridional velocity it is set to northernmost value.
1053    o pkg/exf/exf_check_range.F
1054     - add tile index to diagnostics and move stop statement to the very
1055       end of the routine.
1056    o pkg/diagnostics: (diagnostics_main_init.F)
1057      define title of isomorphic variables according to the current config.
1058    o pkg/thsice with pkg/seaice dynamics:
1059    - fix domain of computation (interior only, required for exf) and do exchanges
1060    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
1061    o towards a standard way of dealing with multi-threading in MONITOR
1062      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
1063    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
1064       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
1065    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
1066    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
1067    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
1068       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
1069    o tracer advection:
1070     - clean-up and simplify calc_common_factors.F
1071     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
1072       advection subroutine (but still not used within DST advection S/R)
1073    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
1074    
1075    checkpoint58j_post
1076    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
1077      from file (collects calls previously in FORWARD_STEP)
1078    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
1079    o adjoint store dir. adjusted accordingly
1080    o genmake2
1081      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
1082    
1083    checkpoint58i_post
1084    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
1085      on wind stress (SEAICEstressFactor defaults to 1.)
1086    o Total number of Timers is finite (<=40): comment out 2 non-essential one
1087      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
1088    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
1089      on CS-grid: no longer loosing mass.
1090    o exf & curvilinear-grid: no longer modify longitude xC & xG.
1091    o pkg/ggl90: fix sloppy output and fix a bug
1092    o pkg/seaice: added SEAICEuseEVPpickup parameter
1093      - Set to false in order to start EVP solver with
1094        non-EVP pickup files when using SEAICEuseEVP
1095      - fix sign error in diffusion in seaice_calc_rhs
1096    
1097    checkpoint58h_post
1098    * Modifications for bottom topography control
1099      o replace hFacC by _hFacC at various places
1100      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
1101      o add non-self-adjoint cg2d_nsa
1102      o update autodiff support routines
1103      o re-initialise hfac after ctrl_depth_ini
1104      o works for 5x5 box, doesnt work for global_ocean.90x40x15
1105    * Adding verification for 5x5 box (4-layer) bottom topography control
1106    
1107    checkpoint58g_post
1108    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
1109       used for mean seasonal cycle, mean diurnal cycle); add an example
1110       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
1111    o pkg/ggl90:
1112      - add parameter (minimum surface kinetic energy)
1113      - fix bug (avoiding division by zero)
1114    o couple pkg/thsice to pkg/seaice:
1115      - modify advection in seaice to accomodate new scalar fields to be advected
1116      - only muliDimAdection scheme work with seaice/thsice
1117      - mapping of thsice-variables to seaice-variables, back and forth
1118      - does not break the verification experiments, but does not give the
1119        desired results either
1120    o pkg/seaice
1121      - make (default) second order advection a bit less confusing?
1122    
1123    checkpoint58f_post
1124    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
1125      to pkg/seaice):
1126      - new routines thsice_map_exf and thsice_get_exf provide the interface
1127      - add an additional formal parameter to thsice_solve4temp
1128    o pkg/exf:
1129      - add new fields wspeed, snowprecip (to be able to couple to thsice)
1130      - correct Stefan-Boltzmann constant
1131      - new parameter for longwave surface emittance
1132      - separate some stuff from exf_bulkformulae into new routines  
1133        exf_radiation, exf_wind
1134      - add new parameters and constants: longwave emissivity for ocean, ice
1135        and snow, evaporation parameters over ice
1136      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
1137        either wind from stress or stress from wind
1138    o pkg/thSIce:
1139    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
1140    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
1141       and THSICE_CALC_THICKN
1142    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
1143    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
1144      to make debugging easier.
1145    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
1146    o pkg/bulk_force:
1147      - clean-up comments and parameters ;
1148      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
1149    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
1150      generate new output for test-experiment: aim.5l_cs.thSI
1151    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
1152      testreport accordingly
1153    
1154    checkpoint58e_post
1155    o SEAICE_CGRID adjoint done
1156    o R_STAR adjoint implemented.
1157      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
1158      * need to sort out init. of h0facc, etc.
1159    o Make pkg/profile fully independent of ecco,cost, etc. stuff
1160      to be able to use it in pure forward.
1161    
1162    checkpoint58d_post
1163    o upgrade simple test-experiment to tutorial example:
1164     step.1: duplicate the experiment and (step.2) will remove the old copy.
1165      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
1166      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
1167      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
1168      tutorial_global_oce_biogeo    <- copy of dic_example
1169      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
1170      tutorial_plume_on_slope       <- copy of plume_on_slope
1171      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
1172      tutorial_global_oce_optim     <- empty for now (David ?)
1173      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
1174     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
1175    o correct a sign problem in cost_scat.F
1176    o obcs and ptracers: fix boundary conditions for advections schemes
1177      with larger stencil
1178    o thsice adjoint: start
1179    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
1180      completeness
1181    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
1182      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
1183    o ptracers adjoint:
1184      * avoid extensive recomputatations
1185      * fix missing re-init. of gptr (missed by TAF)
1186    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
1187      me to turn off the excessive output to STDOUT that this package produces
1188    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
1189      and add those terms in Vector-Invariant formulation.
1190    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
1191      if the control period (xx_hfluxperiod etc) is 0
1192    o in profiles pkg, clean routines and fix details
1193    o in ecco pkg, reading ssh data:
1194      fix problem in case the model does not start at iter0=0
1195    o fix mnc-pickup/restart for ptracers
1196    o new package prifiles:
1197      code to compute profile-based cost by Gael Forget
1198      (modifs in ecco, ctrl, autodiff)
1199    o Benign bug fix in initialization (spotted by M. Mazloff) of
1200      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
1201    
1202    checkpoint58c_post
1203    o adjoint: finish NLFS adjoint and provide reference output in
1204      verification/global_ocean.90x40x15/results_ad_nlfs
1205    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
1206      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
1207      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
1208      with SEAICE_CGRID defined.
1209    o move calendarDumps from "data" to "data.cal" and clean-up the code
1210      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
1211    o add useEXF & useCAL flags (for now, set in hard-coded way)
1212    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
1213      (were missing in NH mode, and wrong in quasihydrostatic mode).
1214      waiting for Chris updated version of calc_gw to add those CALLs.
1215    o fix bug in quasihydrostatic S/R ;
1216      add a test for this option: global_ocean.90x40x15.qshyd
1217    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
1218      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
1219    o add on/off flag useOffLine for package OFFLINE
1220    o seaice:
1221      - modify advection so that it works also on the C-grid
1222      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
1223        problem in multi-tile runs with C-grid
1224      - add flags for clipping ice velocities and/or masking solver forcing
1225      - fix drag (ocean on ice) formulation and a bug that caused noise in the
1226        C-grid solver
1227      - added a few comments to seaice_diffusion.F
1228      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
1229        are now exclusive)
1230      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
1231        required re-ordering the code a little:
1232       + make DAIRN global variable (defined in SEAICE)
1233       + move computation of the viscosities eta and zeta into a new separate
1234         routine (because I need to recompute them in seaice_ocean_stress.F)
1235    
1236    checkpoint58b_post
1237    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
1238      update output.txt of exp. aim.5l_cs.thSI
1239    o various mnc cleanups and improvements:
1240      + shrink lookup tables by factor of ~4
1241      + better error reporting when running out of lookup space
1242      + able to handle longer path/file names (up to 500 chars)
1243    o adjoint:
1244      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
1245      - TBD: "hidden" mom_vecinv recomp. in dynamics
1246    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
1247     (allow to differentiate between forcing components using new integer flags:
1248      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
1249     and add new flag to put Dissipation tendency out of Adams-Bashforth.
1250    o ecco
1251      - enable trend removal from SSH anomaly obs.
1252    o adjoint
1253      - a fix for PmEpR when #undef EXACT_CONSERV
1254      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
1255      - try to fix "hidden" recomp. in forward_step for NLFS
1256        (NLFS seems broken sometimes after I checked it in)
1257    o seaice:
1258     - add c-grid version of the dynamic solver:
1259       + three new routines that are the c-grid substitute lsr, dynsolver
1260         and ostres
1261       + put a few fields that were local to dynsolver into global common
1262         blocks, so that I can move the computation of stresses etc into
1263         seaice_lsr (saves coding but may break the adjoint).
1264     - replace more hardwired parameters by runtime parameters
1265     - add ice masks that mask the rhs of the implicit solvers where there
1266       is no ice (commented out in seaice_dynsolver, because i am not sure
1267       if this works properly), eventually this should replace the clipping
1268       of ice velocities in seaice_dynsolver to +/-40cm/s.
1269    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
1270      include it only where its needed
1271    o move balancing of fluxes before the call of external_forcing_surf
1272    o seaice:
1273      - correct units of turning angles (now they are really in degrees)
1274      - move computation of GWATX/Y out of main routine into dynsolver
1275      - initialize GWATX/Y in seaice_init
1276    o Apply mask on Fresh-Water flux (needed for SSH forcing).
1277      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
1278    o seaice: add runtime flags for turning angles (default to zero)
1279    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
1280      and trend from exf forcing and ctrl control adjustments
1281    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
1282      (since checkpoint57x_post)
1283    o change the default rotation period to 86164.s = the Earth rotation
1284    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
1285      and based on a reference stratification. Tested within hs94.cs-32x32x5.
1286    o seaice advection: add code for choosing between the default (2nd order
1287      central differences) and multiDim advection schemes provided by
1288      pkg/generic_advdiff
1289    o seaice:
1290      - removed all references to SEAICE_GRID.h fields from
1291        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
1292        (cubed-sphere configuration will change a little)
1293      - grid computations in seaice_init are obsolete now.
1294      - cleaned up code a little so that is easier to read (hopefully).
1295      - added new (better?) discretizations of default advection and diffusion
1296        (turn on with SEAICEuseFluxForm)
1297      - replace 1 in 3d global fields by kSurface in growth.F
1298      
1299    checkpoint58a_post
1300    o seaice:
1301      - bug fix in advect.F
1302    o shelfice:
1303      - separate shelfice load anomaly from pload (breaks with time
1304        dependent forcing), => introduce constant field shelficeLoadAnomaly.
1305        Its default is 0., but it may be computed more cleverly from (unknown)
1306        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
1307        done offline. A good approximation of the pressure load anomaly is
1308        necessary to avoid large initial adjustment processes underneath
1309        deep-reaching shelfice.
1310      - small fix in ISOMIP shelfice_thermodynamics
1311      - add more sophisticated thermodynamics of Hellmer (1989), this is
1312        now the default
1313      - give a few constants more intuitive names
1314    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
1315      if bulk formulae are used in long integration (especially EmPmR). Turn
1316      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
1317      if balancePrintMean, the imbalance that is substracted is printed to
1318      STDOUT.
1319    o fix bug (typo) in obcs_apply_eta.F
1320    o add a new package shelfice which enables us to model the circulation
1321      underneath shelf-ice with draughts of hundreds of meters.
1322     - works
1323     - to do: + include improved thermodynamics
1324              + check whether kSurfC (from model/inc/SURFACE.h) can be used
1325                instead of new field kTopC
1326              + can we use topoFile, Ro_surf and existing code in ini_depth.F
1327                instead of new field R_shelfIce and new code in ini_depth.F
1328                and ini_mask_etc.F?
1329              + adjust vertical mixing schemes?
1330    o seaice pkg:
1331     - add a cpp-flag to include a simple formula for a salinity dependent
1332       freezing point of sea water at the surface
1333     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
1334       meridional stresses are now different (and hopefully correct)
1335    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
1336       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
1337       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
1338    o pkg/diagnostics: add options and parameters for regional-statistics
1339       diagnostics ; define regions by reading a region-mask from a file
1340       (might add other options later)
1341    o pkg/bulk_force:
1342     - add option and parameters to use AIM surface-flux formulae.
1343     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
1344       others forcing fields (defined in PARM05, parameter file "data") are loaded
1345       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
1346     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
1347     - use the right EXCH call for uwind,vwind (to work on CS-grid).
1348     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
1349       and parameters (note: calcWindStress replaces .NOT.readwindstress).
1350     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
1351    
1352    checkpoint58
1353    o add "--embed-source" option to genmake2 which, when the supporting
1354      tools can be compiled (as determined by genmake2) will turn on the
1355      embed_files package which then embeds the entire MITgcm source code
1356      (*.[fFhc] + Makefile) used for the build within the executable
1357      - requested by CNH but off by default
1358      - adds a paltry <9MB to the mitgcmuv executable in most cases
1359      - only writes the output when useEMBEDSRC in eedata is true
1360    o clean up 3-dim. relaxation codes:
1361      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
1362      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
1363      * Thanks to Tom Haine for testing!
1364    
1365    checkpoint57z_post
1366    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
1367      affects output (@ truncation level) of exp. plume_on_slope ; updated.
1368    o fix the pickup behavior for obcs in combination with ptracers
1369    o fix a bug in ptracers_external_fields_load
1370    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
1371      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
1372    o transfered surface NH pressure to eta field (if exactConserv).
1373    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
1374         and update lab_sea output.txt file.
1375    o completing 3-dim. relaxation code: additional term
1376         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
1377      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
1378      * At compile time, in "EXF_OPTIONS.h" set
1379          #define  ALLOW_CLIMTEMP_RELAXATION
1380          #define  ALLOW_CLIMSALT_RELAXATION
1381      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
1382          tauThetaClimRelax3Dim = 15552000.0,
1383          tauSaltClimRelax3Dim  = 15552000.0,
1384      * 3 cases:
1385          1) Use a constant-in-time 3-dim. field
1386          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
1387          3) Real-time relax. to time-evolving prescribed field
1388    o Adding Laplacian-type smoothness constraint on
1389      initial and boundary (forcing) controls (ic, bc)
1390      * enable at compile-time via
1391        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
1392      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
1393      * Absolute scale somewhat unclear so far
1394      * no area weighting was included since no other cost term does so far
1395    
1396    checkpoint57y_post
1397    First step for a NLFS adjoint
1398    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
1399    o new init. routines for calc_r_star, calc_surf_dr
1400    o still need to deal with ini_masks_etc
1401    o testreport seemed happy
1402    checkpoint57y_pre
1403    
1404    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
1405    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
1406    o add new offset feature to offline pkg (plus minor cleanup)
1407    o cfc fixes for final year of integration
1408    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
1409      be in GCHEM_OPTIONS).
1410    
1411    checkpoint57x_post
1412    o fix testreport Pb in multiple test experiment.
1413    o cleanup our namelist syntax in verification:
1414      - make it more F95 standards compliant (some work still needed)
1415      - allows the vast majority of our tests to work with gfortran
1416    o Non-Hydrostatic:
1417     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
1418     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
1419    o Allow to apply AB on T,S rather than on AB(gT,gS):
1420     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
1421     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
1422       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
1423     - need a "clever" read_pickup to restart from the other AB formulation
1424    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
1425    o remove some unused variables (reduces number of compiler warnings)
1426    o adjoint
1427      * Disable useVariableViscosity for adjoint for time being
1428        (there are a number of extensive recomputations)
1429      * Initialize certain variables needed for adjoint
1430    
1431    checkpoint57w_post
1432    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
1433                 fix the singleCpuIO RS version of MDSWRITEFIELD
1434       and add a WARNING if using globalFiles=T with multi-processors.
1435    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
1436      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
1437    o tracer advection scheme:
1438      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
1439       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
1440       was not very convenient).
1441      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
1442       (further tests needed for the implicit DST & Flux-Limiter schemes).
1443    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
1444      and sRef for convenience, handy, when you want to initialize
1445      ptracers in a large domain with a constant non-zero value. Also,
1446      untangle ptracers_init.F a little.
1447    
1448    checkpoint57v_post
1449    o change dome exp. to use variable viscosity in side-drag terms.
1450    o remove all the files from the cfc_offline test since they are now
1451      incorporated into tutorial_cfc_offline which has been producing
1452      identical results for a few days of testing
1453    o add new parameter: sideDragFactor to enable half-slip-side BC
1454      and change side-drag S/R to use viscosity from mom_calc_visc
1455      (can switch back by setting sideDragFactor=0.); affects results at
1456      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
1457       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
1458    o vorticity & strain are now computed without masking, to account for
1459      no-slip-side BC in variable viscosity calculation ; mask is applied
1460      anyway later on, before computing advection/coriolis terms.
1461    o modify exp4 to test new obcs support for reading from external files
1462      and for passive tracers
1463    o fix behavior of ptracers_monitor when monitor output is written to a
1464      netcdf-file; still not independent of monitor.F (writes in the same
1465      file).
1466    o change default value of tRef (put a uniform, meaningful value for ocean
1467      & atmos) and initialize sRef (was missing, as Martin mentioned).
1468    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
1469      to be proportional to enstrophy dissipation length.  Thus,
1470       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
1471      This is now consistent with Smagorinsky and with the manual.
1472    
1473    checkpoint57u_post
1474    o OBCS and PTRACERS: add open boundary support for passive tracers
1475      - either use homogenous (pseudo) v.Neumann conditions or prescribe
1476        OB-values from file; this is not different from the way theta and salinity
1477        are treated
1478      - however, Orlanski-radiation conditions are not supported, and the model
1479        will stop if you use pTracers and Orlanski at the same time.
1480      - beefed up the rountine obcs_external_fields_load: now only those open
1481        boundary values are overwritten with values from files for which there
1482        are really files, otherwise the OB-fields remain untouched. This makes
1483        it possible to use different OBs at different ends of the domain (as
1484        with EXF)
1485    o reduce number of exch calls in shap_filt (s2).
1486    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
1487      truncation level) 4/5 MLAdjust test results (11&12 digits match).
1488    
1489    checkpoint57t_post
1490    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
1491    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
1492      same truncation, independent of the face number: affects affects several
1493      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
1494    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
1495      note that biharmonic viscosity + no-slip was not tested in any experiment.
1496    o fix bug in non-linear free-surf side-drag ; generate new output for
1497      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
1498    o make mnc honor the writeBinaryPrec flag for most kinds of output
1499    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
1500    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
1501      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
1502    o add brackets in multi-terms sum to get same truncation, independent of
1503      the face number (manage to get exactly same value of gU,gV at the cs-edge)
1504      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
1505    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
1506      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
1507      a maximum grid-scale Reynolds number.  Also, changes all length calculations
1508      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
1509      Suggested values of viscosity parameters found in mom_calc_visc.
1510      Many new viscosity diagnostics available.
1511    
1512    checkpoint57s_post
1513    o Add clearing-house for viscosity calculations, mom_calc_visc and
1514      correct numerous bugs in LeithD and Smagorinsky discretizations.  
1515      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
1516      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
1517      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
1518      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
1519      The Strain-Tension form is now called with useStrainTensonVisc=.true.
1520      ViscAhStrain and viscAhTension are now retired.
1521    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
1522    o In response to JMC's bug report, genmake2 now ignores any soft-links
1523      that it finds in the *current* directory when searching for files.
1524      Soft-links found in any other source directories will still work as
1525      they did before.
1526    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
1527      a C routine to unlimit the stack size
1528    o mnc-ify pkg/aim snapshot vars
1529    o mnc-ify pkg/land as requested by Daniel
1530    o various changes to mnc including:
1531      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
1532      - output can now be grouped so that all files within a group
1533          change the ITER portion of their names in lock-step together
1534      - can now read ("global") PER-FACE (in addition to PER-TILE) files
1535          and works with both EXCH1 and EXCH2 (but needs more testing)
1536      - writing works for all verification test cases w/ g77 on Linux
1537    
1538    checkpoint57r_post
1539    o make MNC variable initialization happen earlier
1540    o add diagnostics for (almost) each term of the momentum Eq.
1541    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
1542    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
1543    o remove MINIMAL_TAVE_OUTPUT option ;
1544      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
1545    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
1546      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
1547    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
1548    o add time-dependent SST, SSS control
1549    o cost terms in ecco/ modularized (new cost_generic.F)
1550    o cost_averages routines are modularized (new cost_averagesgeneric.F)
1551    o new infrastructure for seaice model vs. obs misfits in seaice/
1552      * driver from the_main_loop.F is seaice_cost_driver.F
1553      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
1554      * gradient check in Exp. 6a of natl_box_adjoint/
1555    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
1556      (see README file)
1557    
1558    checkpoint57q_post
1559    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
1560    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
1561      - bug was reported by Jean-Michel and Ian Fenty
1562    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
1563      update exp. cpl_aim+ocn output.
1564    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
1565      Needed for high-res. runs with large global files
1566      to be able to limit tapelev size
1567    o Changed some tests for adjoint:
1568      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
1569      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
1570      * global_ocean.90x40x15/ back to default 3-level checkpointing
1571    o Modifications to enable scripted COMMON to MODULE conversion
1572      * verification/OpenAD/code/ has necessary scripts and description;
1573      * converts, compiles and runs successfully;
1574    
1575    checkpoint57p_post
1576    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
1577    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
1578      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
1579    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
1580    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
1581      (was already the case for dissipation with mom_vecinv,
1582       and also the case for grad.PhiHyd when staggered-timeStep)
1583      This will allow to put dissipation out-off the AB time-stepping.
1584     Unfortunately, affects truncation error. Update output of exp. that "fails"
1585      (cg2d matching number) and leave the others for later: front_relax(10),
1586      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
1587      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
1588    
1589    checkpoint57o_post
1590    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
1591      (2) its ready to be documented during the 20050801 DocFest
1592    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
1593      for ideal_2D_oce and lab_sea on linux_ia32_g77
1594    o set to #undef CTRL_SET_OLD_MAXCVARS_30
1595      in global1x1_tot/code_seaice_adj to access indices 32, 33
1596      (worth another tag)
1597    
1598    checkpoint57n_post
1599    o adding precip control xx_precip 32
1600    o adding swflux control xx_swflux 33
1601    o Replacing 10 forcing penalty cost routines by 1 generic.
1602    o Implementing partitioning in time-mean and variable adjustment
1603      for atmos. state.
1604    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
1605    o in natl_box_adjoint:
1606      * updated exp 1 to 10
1607        (but does not have time-mean vs. variable split results yet)
1608    o updated global1x1/*_seaice_adj/
1609      to incorporate latest changes
1610    o enable useSingleCpuIO for mdsio vector routines
1611      (applies in particular to tapelev I/O)
1612    o removed inefficient K-loop in all active_file*control*.F
1613    
1614    checkpoint57m_post
1615    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
1616      and advect_cs (use EXCH-2 and standard cs-32 grid files).
1617    o pkg/exch2: filling of face-corner halo regions is optional
1618      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
1619    
1620    checkpoint57l_post
1621     tag before updating tutorials (pre-release-2)
1622    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
1623       for output and interpolation of input fields onto model grid)
1624    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
1625       Affects results of exp. rotating_tank ; update output.txt.
1626    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
1627          and taking the square quantity and/or using a fraction-weight field.
1628    o fix aim_diagnostics_init.F mate numbers.
1629    o add mnc output capability to diagnostics/diagstat and update
1630      our cvsignore files for the ACSII output generated
1631    
1632    checkpoint57k_post
1633    o lab_sea now uses diagnostics package and provides a suite of
1634      new EXF diagnostics output.
1635    
1636    checkpoint57j_post
1637    o exf
1638      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
1639        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
1640        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
1641      * extended diagnostics output
1642        - now includes all EXF variables
1643        - hs, hl moved to common block
1644        - separate S/R for diagnostics, called after ctrl vector is added
1645        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
1646        - EXFqnet contains true Qnet (i.e. includes qsw)
1647      * updated verif. lab_sea, global_with_exf
1648      * Rearranging hflux (exf_mapfields -> exf_getforcing)
1649        to ensure that diagnostics sees a true EXFqnet
1650    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
1651    o diagnostics pkg: change pointers so that 1 diagnostic can be used
1652      several times with different frequencies.
1653    o mnc-ify the thsice package as requested by Daniel Enderton
1654      - the monitor--MNC output needs work
1655      - many attributes need to be added (most are currently blank)
1656    o mnc-ify theaim_v23 package as requested by Daniel Enderton
1657      - many attributes need to be added (most are currently blank)
1658    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
1659    o add Sadourny like discretization to the 4th.O vorticity advection scheme
1660    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
1661      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
1662         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
1663    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
1664     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
1665    
1666    checkpoint57i_post
1667    o Diagnostics package was changed: diagnostic allocation is now deactivated
1668      by setting an empty file name in the namelist (used to be by setting 0 frequency)
1669    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
1670      add 1rst Order upwind vertical Shear.
1671    o add a quick fix for A/B checkpointing in OFFLINE mode
1672    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
1673      end-run around the C/Fortran linking horror in eesup/src/timers.F
1674    o added pkg/runclock: allows user to terminate run based on wall clock
1675    o added non-hydrostatic scaling parameter: nh_am2
1676    o pkg/my82: futile attempt to make results compiler-independent by adding
1677      some "_d 0", etc. no effect.
1678    o for mnc output, fill the 'T' coordinate var with myTime and create a
1679      separate 'iter' variable for iteration count
1680    o pkg/diagnostics:
1681      add new capability: output of Global/Regional & per-level statistics ;
1682      tested against monitor output (including land & thSIce) on various exp.
1683    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
1684    
1685    checkpoint57h_done
1686      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
1687      data.diagnostics, data.gchem, data.ptracers) is done.
1688    
1689    o pkg/diagnostics: prepare for Global/Regional statistics.
1690      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
1691    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
1692      and rename it: DIFFERENT_MULTIPLE
1693    
1694    checkpoint57h_post
1695    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
1696    o pkg/diagnostics: change output frequency, now in seconds (instead
1697      of Nb of iterations). This requires to change data.diagnostics.
1698    checkpoint57h_pre
1699    
1700    o in mnc, let the user create the output dir if both mnc_outdir_date
1701      and mnc_outdir_num are false
1702    o add fflags() to pkg/diagnostics which allows one to specify, on a
1703      per-file basis, the file precision [default behavior is unchanged]
1704    o added diagnostics to pkg/kpp, including computation of mixed layer
1705      depth based on a temperature/density criterion
1706    o updated verification/natl_box to test the new pkg/kpp diagnostics
1707    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
1708    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
1709    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
1710      not mnc -- this mistake was found by JMC and is now corrected
1711    
1712    checkpoint57g_post
1713    o add Adams-Bashforth 3rd Order time stepping:
1714      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
1715      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
1716    checkpoint57g_pre
1717    
1718    o make lambda[Theta,Salt]ClimRelax spatially varying
1719      (default remains spatially uniform constant based on tau)
1720    o added new control variables
1721      * init. uVel, vVel, etanN
1722      * lambda[Theta,Salt]ClimRelax
1723    o separate masks used for ctrl_pack/unpack 'from write_grid' output
1724      (suggested by G. Forget)
1725    
1726    checkpoint57f_post
1727    o add parameter "baseTime" = model base time = time at iteration zero
1728      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
1729      account for baseTime shift
1730    o move Coriolis arrays from PARAMS.h to GRID.h
1731    checkpoint57f_pre
1732    
1733    o mnc-ifying the seaice package
1734    o introduced an alternative length scale calculation for use in the limiting
1735      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
1736    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
1737    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
1738      as well as grad(vort3).  Made it compatible with both approximate form
1739      for the cubed sphere and full form of these gradients.  Added flag
1740      useFullLeith to select between approximate and full form.  
1741    o add "d0" in getcon.F to reduce differences between compilers/platforms
1742      update output.txt of exp. fizhi-gridalt-hs
1743    o change port_rand funtion to allow to set the seed.
1744    o fix obscure MNC bug involving conversion between reals and integers
1745      - it caused no problems with certain (eg. gcc, ifc) compilers but the
1746        new version is now more standards-compliant
1747    o adjoint-related modifications
1748      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
1749      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
1750      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
1751    
1752    checkpoint57e_post
1753    o Adding eddy stress controls a la Ferreira et al.
1754    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
1755    
1756    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
1757      update output.txt of exp. fizhi-gridalt-hs
1758    o add more "Z" dimensions and associated coordinate vars to MNC
1759    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
1760    o parameter calendarDumps: when set, approximate months (30-31 days) and years
1761      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
1762      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
1763      months and years.  Requires pkg/cal.
1764    o diagnostics: add pickup functionality
1765      - off by default for backwards compatibility
1766      - current version only uses MDSIO -- MNC will be added
1767    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
1768    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
1769    
1770    checkpoint57d_post
1771    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
1772    o modify verification/ideal_2D_oce so that it tests the creation of mnc
1773      output from the diagnostics package
1774    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
1775    o make genmake2 more portable by using ".$FS" instead of ".f" for more
1776      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
1777    o add coordinate variables to the MNC output from the diagnostics package
1778    o change MNC-flags default value: true when useMNC=TRUE
1779    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
1780      the ability (off by default) to read the grid information using MNC
1781    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
1782    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
1783    o do snap-shot diagnostics at the middle of the time-interval (instead of
1784      at the end).
1785    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
1786      new test for AIM with thSIce + slab-ocean
1787    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
1788    o move state variable diagnostics to the beginning of the time step ;
1789      (note: still needs some work specially for snap-shot diagnostics)
1790      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
1791    
1792    checkpoint57c_post
1793    o Change testing option (-ieee) to get closer agreement between g77 & ifort
1794    o generate new output.txt files on faulks with g77 & the new -ieee option
1795    checkpoint57c_pre
1796    
1797    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
1798      update output.txt of exp. global_ocean.90x40x15
1799    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
1800      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
1801    o add saltFlux(+File) forcing capability with periodicExternalForcing
1802    o allow to use pkg diagnostics for GM-Redi & ThSIce output
1803    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
1804    o improvements for the MNC output from DIAGNOSTICS:
1805      - correct handling of the unlimitied dimension
1806      - all dims now have associated coordinate variables
1807      - variables located at U, V, and Corner ("Z") points are now written
1808        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
1809        *all* data points are output
1810    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
1811    o added pkg/seaice/seaice_monitor.F
1812    o mdsio_readfield.F can now read files visible only to master MPI process.
1813    o pkg/seaice: some test code for ice-modified ocean stress
1814    o exf_getffields interpolation defaults to bilinear for all scalar forcing
1815      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
1816      spurious negative numbers for precipitation and humidity.  Will cause
1817      some small numerical differences for integrations using pkg/exf/exf_interp.F.
1818    o pkg/ctrl/
1819      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
1820        May be enabled via doPackDiag
1821      *  introduce z-scaling of
1822         + gradient (doZscalePack) and
1823         + control (doZscaleUnpack)
1824    o pkg/mdsio/
1825      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
1826      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
1827    
1828    checkpoint57b_post
1829    o simplify options in diagnostics_fill arguments (remove weird combinations)
1830    o fix MNC coordinate variables so that they now contain per-face index
1831      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
1832      general, EXCH2 grids are only aligned to a "local" coordinate system
1833    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
1834    o Implement instantaneous output within pkg diagnostics:
1835      setting a negative frequency in data.diagnostics produces
1836     "snap-shot" output (as opposed to time-average if freq > 0)
1837    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
1838      NOTE: change ptracer diagnostics name: use 2 characters to work with
1839            more than 9 tracers. Add also diagnostics of advect & diffus flux.
1840    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
1841      becomes the coordinate variable for the 'T' dimension
1842    o add CF-style coordinate variables to MNC
1843      - just a first cut:  numbers are meaningless on the cubesphere and
1844        missing along the T axis but otherwise it works!
1845    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
1846    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
1847    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
1848      this is based directly on what the model compute, so that the content of
1849      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
1850    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
1851    o clean up build options files for SunOS, in particular
1852      - remove -traditional from xmakedepend
1853      - change -xarch=v9 to -xarch=native for f77
1854      - restore use of make (not gmake)
1855      - add CC=gcc if using g77
1856    o changes per discussion of AM, JMC, & EH3 today:
1857      - move redundant "grid" variables out of "state" -- in preparation of
1858        creating proper CF-style coordinate variables and in recognition
1859        that any/all grid variables can be easily copied (eg. w/NCO) from
1860        the grid files into any of the other NetCDF files
1861      - *always* output grid variables with MDSIO (this will eventually be
1862        changed)
1863      - output MNC grid file if useMNC is true
1864    o every instance of _END_MASTER() has been found and replaced with
1865      _END_MASTER( myThid ) in order to satisfy certain picky Sun
1866      preprocessors
1867    o re-arrange diagnostics pkg initialisation:
1868     - allow each package to extend the available diagnostics list
1869     - add some checking and fix small problems (multi-threaded, ...)
1870     - new S/R diagnostics_fill (replace fill_diagnostics):
1871       look through the short list of active diag. (instead of the long list)
1872       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
1873    
1874    checkpoint57a_post
1875    o this set of changes restores TAMC compatibility
1876      tested for global_ocean.90x40x15 adjoint on trough
1877      (what a pain)
1878    
1879    checkpoint57a_pre
1880    o some modifs in tools/build_options for sunos
1881    o call ctrl_pack for ctrl at end for optimcycle=0
1882    
1883    checkpoint57
1884    o add horizontal bi-harmonic viscosity for vertical velocity
1885      - new parameter viscA4W (defaults to viscA4)
1886      - affects only non-hydrostatic code
1887      - to be done: no-slip lateral boundary conditions
1888    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
1889    o implement Implicit Vertical advection for pTracers
1890    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
1891      (implemented also for implicit vertical diffusion & advection)
1892    o OBCS: extend application of tracer open boundary conditions
1893      to a strip beyond the boundary of width Olx/Oly
1894    o add call monitor to TAF set of required calls (flow directives)
1895      and include in natl_box_adjoint
1896    o untangle a few ifdefs related to cost, ctrl, autodiff
1897      untangel a few ALLOW_ECCO_OPTIMIZATION
1898    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
1899      (theta2, salt2 in ecco_cost_weights)
1900    
1901    checkpoint56c_post
1902    o OBCS as control variables
1903      - update ctrl_ad_diff.list, obcs_ad_diff.list
1904      - remove balance of obcs controls from default
1905      - fix index bug nobcs in ctrl_init
1906      - fix dummy fields filen in ctrl_pack
1907      - add dummy weights for obcs
1908    o lsopt: comment out fort.94 output
1909    o optim:
1910      - remove unnecessary header files
1911      - adjusted namelists
1912      - add xerbla.F to Makefile
1913    o exf:
1914      - multiple modifications of exf_check_range
1915      - unit change in exf_init_runoff from [m/year] to [m/s]
1916    o mdsio:
1917      - i/o-vector change debugLevel from debLevA to debLevB
1918    
1919    checkpoint56b_post
1920    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
1921      is called from DO_THE_MODEL_IO
1922      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
1923      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
1924      - clean up PTRACERS_WRITE_TIMEAVE a little
1925    o add another verification experiment that tests both the cfc-pkg and
1926      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
1927      reactive tendencies treated inline with regular timestepping
1928    o testreport previously did a lousy job of comparing small numbers, so
1929      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
1930      implemented in the little c-progam tmp_cmpnum.c which is embedded in
1931      testreport.
1932    o ptracers_monitor: bug fix for MPI
1933    
1934    checkpoint56a_post
1935    o GCHEM: finish reorganizating the package
1936      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
1937        (introduces another 3D-array for each passive tracer, but only if
1938        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
1939        gchemTendency is not needed because the timestep is done separately)
1940      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
1941      - GCHEM is now---more or less cleanly---separate from PTRACERS
1942      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
1943        so clear to me how that should be done in a general way.
1944    o CFC: improve formatting of output in CFC_ATMOS
1945    o PTRACERS:
1946      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
1947        that ALL experiments with ptracers enable can be checked. This makes
1948        GCHEM_MONITOR obsolete.
1949      - include a runtime parameter PTRACERS_monitorFreq that defaults to
1950        monitorFreq
1951      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
1952    o add PTRACERS (PTR0[1-5]) to testreport output
1953    o exf_check_range:
1954      * default changed to .TRUE.
1955      * will check values for niter0 if debLevA, every timestep if debLevB
1956      * STOP in exf_check_range if 'out of range'
1957      * range chosen generous to allow for potential extema
1958      TBD: a version with stricter range
1959           permitted range would be runtime parameters
1960    o GMredi:
1961      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
1962      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
1963      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
1964    o GCHEM:
1965      - move call to GCHEM_FORCING_SEP, so that it is now called before
1966        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
1967      - introduced a useGCHEM runtime flag and applied it everywhere.
1968      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
1969        this flag is now only visible within GCHEM-pkg routines.
1970      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
1971        be replaced by a 3D array that is computed before thermodynamics; for
1972        this, the tracer ID iTracer had to be included into the parameter list
1973        of ptracers_forcing
1974      - set up forward_step to call gchem_forcing, that will replace
1975        gchem_forcing_int in ptracers_forcing
1976      - cleaning up
1977    o small cleaning of exch2: remove files that are also in eesupp/src
1978    
1979    checkpoint56
1980    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
1981    o mnc: cleanup "full" files--fixes out-of-memory problem
1982    o ECCO-GODAE
1983      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
1984      * fully merged and updated from SIO code
1985        windstress sign change affects
1986        - exf_inscal_[u/v]stress
1987        - sign of xx_tau[u/v] adjustments
1988        - signs in cost_scat
1989      * ctrl_get_gen: avoid update of tau[u/v] for first few days
1990      * natl_box_adjoint updated and compressed
1991      * 2-level checkpoint switch added
1992        (tested in EXP. 1 of natl_box_adjoint)
1993      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
1994    o SVD
1995      * first complete, non-hacked version for SVD calculations
1996      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
1997        performed via direct access files admtlm_vector.it????
1998        (via ctrl_[un]pack)
1999      * optimcycle is used for ARPACK iteration counter
2000        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
2001      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
2002        and add linear transforms where necessary
2003      * controls are initial/final SST, SSS (can be extended; need to check
2004        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
2005    o mdsio: filename info to both stderr, stdout
2006    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
2007      from sign change
2008    
2009    checkpoint55j_post
2010    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
2011      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
2012    o add consistent build directories and .cvsignore files to verification
2013    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
2014    o make all subroutines 30 or less characters in length for certain older
2015      compilers to work (a thorough search only turns up two routines in
2016      pkg/ptracers)
2017    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
2018      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
2019    
2020    checkpoint55i_post
2021    o change arrays for total vertical diffusivity (2.D if explicit,
2022      3.D if implicit) ; each ptracer uses its own background value.
2023    o added mnc/NetCDF output capability to ocn_compon_interf
2024      - added bits to verification/cpl_aim+ocn so that it can run on
2025        ITRDA and other clusters without the mpirun "-wd" option
2026    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
2027      configuration
2028    o give MNC the ability to create additional files rather than
2029      exceeding a specified file size limit "MNC_MAX_FILESIZE"
2030      - the default is just less than 2GB which is a practical limit
2031        on many systems
2032    o Compute the non-local term using either KPP vertical diffusivity (=default)
2033       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
2034    
2035    checkpoint55h_post
2036    o add verification test "vermix"
2037    o remove all the *_ioinc flags and replace with the single global
2038      outputTypesInclusive flag
2039    o allow to set a vertical profile of vertical diffusivity for T & S
2040    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
2041    o useMNC moved from data.mnc to data.pkg
2042    
2043    checkpoint55g_post
2044    o Renaming carbon AD experiments to comply with testreport conventions
2045    o Updating adjoint of Held-Suarez hs94.1x64x5
2046    o Fixing directives for non-ECCO forward_step, after ECCO directives
2047      have been fixed to avoid recomp. of do_oceanic_phys
2048      Works well for global_ocean.90x40x15,
2049      but recomp. issue remains for carbon
2050    o Updating adjoint output for natl_box_adjoint after
2051      pkg/ecco has been modified (see taga c55d_post)
2052    
2053    checkpoint55f_post
2054    o rename to timeave_init_fixed
2055    
2056    checkpoint55e_post
2057    o some delicate re-shuffle of store directives to avoid one
2058      extra call of do_oceanic_physics
2059      affects ecco_the_main_loop.F, do_oceanic_physics.F
2060      checkpoint_lev1_directives.h
2061    o NB: this may break global_ocean adjoint temporarily,
2062      but it is clear how to fix it. Will do later, need this now.
2063    
2064    checkpoint55d_post
2065    o ECCO specific cost function terms (up-to-date with 1x1 runs)
2066    o ecco_cost_weights is modified to 1x1 runs
2067    o modifs to allow observations to be read in as
2068      single file or yearly files
2069    o enable to read exf forcing fields as either
2070      single file or yearly files (flag useExfYearlyFields)
2071    checkpoint55d_pre
2072    
2073    o switch between 2-level and 3-level checkpointing
2074    o add ability of MNC to write local and "partial" (eg. 2D slices where
2075      the full 3D field is never actually stored) arrays to NetCDF files
2076      with the correct (that is, the complete multi-dimensional) set of
2077      array indicies
2078      - used in mom_vecinv() to write the diagFreq output
2079      - tested (demonstrated) in verification/aim.5l_cs
2080    o further mnc-ification
2081      - add verification/lab_sea to the list with mnc setups
2082      - fix undefined mnc v-names in cd_code
2083      - add kpp to mnc output (both snapshot and timeave)
2084    o non-hydrostatic code
2085      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
2086        in calc_gw.F
2087      - defaults to viscAh
2088      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
2089        friction or Leith) in non-hydrostatic mode, as long as there is
2090        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
2091    o pkg/cost
2092      extend simple cost functions to treat time mean quantities
2093      (T,U,V) via cost_accumulate_state from cost_tile
2094    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
2095        be 2 times larger than the minimum size the advection scheme requires.
2096        now get a perfect conservation of salt in advect_cs test-exp (updated)
2097    o GGL90 (Gaspar's TKE mixed layer)
2098      - add horizontal diffusion of TKE, requires exchanges in
2099        do_fields_blocking_exchanges, horizontal diffusivity is zero by
2100        default. In OPA there is no horizontal diffusion of TKE but the
2101        mixing coefficients are computed from a horizontal average of TKE of
2102        6 points or so. I think that diffusion has a little more physical
2103        justification.
2104      - clean up ggl90_calc in the hope of reducing memory usage (this hope
2105        was in vain)
2106      - mask tke-variable in ggl90_init
2107    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
2108    o fix biharmonic diffusion on CS-grid.
2109    o more obcs stuff
2110      - added obcs_external_fields_load as an alternative to the EXF-pkg option
2111        for reading boundary values. This routine is called from
2112        obcs_prescribe_read
2113      - updated obcs_check
2114      - changed sponge layer relaxation parameter units for days to seconds
2115      - turned off sponge layer by default
2116      - changed argument list of OBCS_CALC to myTime+deltaTclock
2117      - fixed about 35 bugs in obcs_external_fields_load
2118    
2119    checkpoint55c_post
2120    o obcs stuff
2121      - new runtime flags useOBCSprescribe, useOBCSbalance
2122      - re-arranged obcs_calc
2123      - moved exf_getobcs to obcs_prescibe_read
2124        obcs_prescibe_read is called after ORLANSKI stuff
2125        and independent of it (executable can contain all).
2126      - updated obcs_check
2127      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
2128        These may be necessary only if tangential velocities are
2129        prescribed at OB, not sure, needs testing.
2130    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
2131      which simplifies the calls and passes the ifc check-bounds test
2132    
2133    checkpoint55b_post
2134    o add a 2D scalar, Z location, exchange_2 routine.
2135    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
2136      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
2137      affects advect_cs results (for the wrong reason): update output.txt
2138    o use a more standard discretization for biharmonic viscosity ;
2139     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
2140      affects results of dome set-up: update output.txt
2141    o fix gad_advection.F (CubedSphere part), back to version 1.23
2142    o fix bug in mom_vi_del2uv.F (CubedSphere part).
2143    
2144    checkpoint55a_post
2145    o merged code to
2146      * prescribe/read time-dependent open boundaries
2147        (works in conjunction with exf, cal)
2148      * sponge layer code for open boundaries
2149      * each boundary N/S/E/W now has its own CPP option
2150        (healthy for the adjoint)
2151    
2152    checkpoint55
2153    o up-to-date adjoint of previous breaks
2154      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
2155      - global_ocean_ebm: adjoint still needs fix (TLM ok)
2156      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
2157      - carbon: * remove tr1-related adjoint verification
2158                * add ptracer as control variable
2159    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
2160      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
2161    
2162    checkpoint54f_post
2163    o in verification/carbin/ remove experiment related to
2164      ALLOW_PASSIVE_TRACER (array tr1 etc)
2165      code_ad/ input_ad/ results_ad
2166    
2167    o add two new packages
2168      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
2169        + subject to optimization (memory)
2170      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
2171        + subject to reordering (many GOTOs in the original code)
2172        + so far opps is called for every (i,j) point, and then operates in
2173          the vertical; one may want to reorder the scheme in order operate in
2174          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
2175          fields)
2176    o overhaul of IO so that we now have flags for MDSIO and/or MNC
2177      - all verification tests compile and run with linux_ia32_g77
2178      - defaults are compatible with current input files--nothing
2179        should change if you were not previously using MNC
2180      - MNC output has been added in numerous places (eg. timeave)
2181        but there are still a few writes not yet do-able with MNC
2182        (this is in progress)
2183      - flags now allow for either/or/both use of MDSIO and MNC and
2184        documentation will soon follow
2185      - numerous small formatting cleanups for ProTeX
2186    o add version info (via BUILD_INFO.h) to MNC and stdout
2187    
2188    checkpoint54e_post
2189    o add two new packages
2190      - pp81 (Packanowski and Philander, 1981), Richardson number and
2191        stratification dependent mixing
2192      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
2193      - these scheme operate in a similar manner as KPP (without ghat, of
2194        course), however there is only one diffusivity that is used for both
2195        temperature and salinity (and passive tracers)ç
2196    o add offline package
2197    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
2198      provided by Stephanie Dutkiewicz
2199    o genmake2: add ability to search for C compilers and cleanup test output
2200      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
2201    
2202    checkpoint54d_post
2203    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
2204    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
2205      leading to additional shift by 5 days each year of integration
2206       (i.e. leading to considerable offset over the years)
2207    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
2208    o start with no AB and no initial filtering (staggerTimeStep):
2209      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
2210    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
2211      (external loading & cpl import/export stay in forward_step.F)
2212    o update coupling interface to work with new staggerTimeStep
2213    o change MDSIO ptracers_pickup.
2214    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
2215    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
2216    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
2217    
2218    checkpoint54c_post
2219    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
2220      this affects (truncation error) output.txt of test-exp:
2221       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
2222    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
2223    o change Qnet to always be the net heat flux, (+upward).
2224      affects (truncation error) output of natl_box exp.: updated
2225    o define the max number of passive tracers in PTRACERS_SIZE.h
2226    o start to test mnc routinely in exp0
2227    o add sea-ice loading (sIceLoad) as a new forcing field.
2228    
2229    checkpoint54b_post
2230    o add testreport "-j JOBS" option for parallel builds (tested and pretty
2231       impressive on Altix and Opteron systems)
2232    o diagnostics can now write NetCDF files through the mnc package
2233    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
2234    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
2235    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
2236      affects (truncation error) output of lab_sea & natl_box exp.: updated
2237    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
2238    
2239    checkpoint54a_post
2240    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
2241    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
2242    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
2243    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
2244      + internal_wave (shift in writing cg2d_ini_res)
2245    checkpoint54a_pre
2246    
2247    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
2248      - modified verification/lab_sea and natl_box_adjoint accordingly
2249    
2250    checkpoint54
2251    checkpoint53g_post
2252    o prepare splitting of thermodynamics: store convect.counter in common block
2253    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
2254      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
2255    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
2256    o new parameter "nShapS": allow to treat differently S from T (nShapT)
2257    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
2258    o restore adjointability
2259    
2260    checkpoint53f_post
2261    o modifications that affect AIM experiment results (update output.txt):
2262      - no advection of S at top interface Nr (pkg/generic_advdiff)
2263      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
2264    o AIM pkg:
2265      - include stability function into surf.Flux derivative relative to Tsurf
2266      - calculate clear-sky radiation & surface temp. change (for diagnostics)
2267    
2268    checkpoint53e_post
2269    o merged cylindrical coord configuration
2270    o added rotating_tank experiment
2271    checkpoint53e_pre
2272    
2273    checkpoint53d_post
2274    o faulks upgraded: re-generate output.txt that have changed:
2275       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
2276    o Added Bryan and Lewis, 1979, vertical diffusivity profile
2277    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
2278    o added Sadourny discretization of Coriolis
2279      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
2280      - re-enabled use of omega3 (useAbsVorticity)
2281    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
2282      vector-invariant equations
2283      - note: does *NOT* yet use same variable visc. for no-slip BC's.
2284    o recoded the lateral boundary conditions for non-hydrostatic w, this time
2285      hopefully without new bugs
2286      - still to do: biharmonic friction for non-hydrostatic w
2287    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
2288    o regenerated output for global_ocean_ebm (using -ieee)
2289    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
2290      of mom_common/
2291      - simple re-arrangement of instructions within computing loop
2292    checkpoint53d_pre
2293    
2294    checkpoint53c_post
2295    o new version of coupler for AIM+thSIce and Ocean models
2296     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
2297     - land: change Evaporation of snow
2298     - aim with thSIce: fix bug in snow-precip.
2299    o changes to calc_gw.F
2300     - bug fix for w^2 term near the bottom boundary
2301     - (hopefully) improve the lateral slip boundary condtions for use with
2302        partial/looped cells
2303      - because the bug fix changes two verification experiments anyway (exp5
2304        and plume on slope), change the lateral boundary condition from half slip
2305        to the value of no_slip_sides
2306    o ebm package wasnt quite up to the parallel task. Fixed that.
2307    o Adjoint of EBM package + verification
2308      * TLM OK
2309      * ADM not sufficient accuracy yet (needs further testing)
2310    
2311    checkpoint53b_post
2312    o Commiting new energy balance model to repository
2313      * package is pkg/ebm
2314      * verif. is verification/global_ocean_ebm
2315      * references are in ebm_driver.F
2316    C      * X. Wang, P. Stone and J. Marotzke, 1999:
2317    C        Global thermohaline circulation. Part I:
2318    C        Sensitivity to atmospheric moisture transport.
2319    C        J. Climate 12(1), 71-82
2320    C      * X. Wang, P. Stone and J. Marotzke, 1999:
2321    C        Global thermohaline circulation. Part II:
2322    C        Sensitivity with interactive transport.
2323    C        J. Climate 12(1), 83-91
2324    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
2325    C        Destabilization of the thermohaline circulation
2326    C        by atmospheric eddy transports.
2327    C        J. Climate 7(12), 1870-1882
2328    o Will need long integration testing.
2329    checkpoint53b_pre
2330    
2331    o created pkg/mom_common in preparation for variable viscosity code
2332    o renamed and split ini_mnc_io
2333    o pkg/land: only liquid water can diffuse or run-off
2334    o AIM using land: soil wetness availability account for snow
2335    o added printMapIncludesZeros to EEPARMS namelist
2336    
2337    checkpoint53a_post
2338    o restore TAMC compatiility for exf_constants.h
2339      (no usage of _d in .h)
2340    o Additional storing in KPP in an attempt to fix
2341      TAMC problem with adjoint of KPP code.
2342      (no success...)
2343      Identical code works fine with TAF.
2344    o Fixed verification/natl_box_adjoint experiments.
2345      Initial conditions for Experiments 4 and 5 are now
2346      set to "SEAICE_initialHEFF=0", which is more reasonable,
2347      and hence gives results closer to that of Experiment 2.
2348      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
2349    
2350    checkpoint53
2351    o stable checkpoint with up to date adjoint
2352      TLM tests only run for 1st grdchk at the moment. Its unclear if
2353      this is a code problem or a problem with resetting code for g_
2354      variables that is being autogenerated wrong.
2355      Otherwise:
2356       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
2357       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
2358         are both still in chaos following their security messes.
2359    
2360    checkpoint52n_post
2361    o various build (mostly genmake2) changes including:
2362      - ability to build/run more easily within Cygwin and MacOS X
2363      - more complicated Makefiles with a stronger dependence on Gnu Make
2364    o pkg/seaice modifications
2365      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
2366        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
2367        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
2368      - changed proxy for geostrophic velocity and updated
2369        verification/lab_sea/results/* accordingly
2370      - removed ADI dynamic solver from pkg/seaice
2371      - replaced all occurrences of 1/CSTICE or 1/CSUICE
2372        they caused a segmentation fault under certain circumstances
2373      - removed unused field WATR
2374    o bug fix in exf-package:
2375      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
2376         now reflect that.
2377    o small fixes in the cal-package:
2378      - set reference date to first of January for the 'model'-calendar
2379      - failing of cal_CheckDate in cal_FullDate now actually results in a
2380        warning
2381    o small modifications in exf-package to increase flexibility:
2382      - change climtempfreeze from a constant to a runtime parameter that
2383        is specified in data.exf_clim (default = -1.9)
2384      - introduce runtime parameter windstressmax (default = 2.0) that is
2385        specified in data.exf
2386    o fix in pkg/thsice:
2387      - update Evap (Tsf changes) to be consistent with Latent heat flux
2388      - maintain snow precipitation unchanged (even if Tsf >=0).
2389     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
2390    
2391    checkpoint52m_post
2392    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
2393      this does not change any of the results, because myIter=0 in swfrac always
2394      lead to jwtype=2 (the default anyway), but the call makes little sense
2395      as a default
2396    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
2397    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
2398      atmospheric model (AIM) to use it ; add a "slab ocean" component.
2399    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
2400    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
2401    o extending useSingleCpuIO option to work with new exch2 I/O format
2402      - old-style, missing-tile I/O is still accessible by defining CPP
2403        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
2404    o monitor package can write to NetCDF files and/or STDOUT
2405    o fix re-definition bug in MNC_GRID_INIT_ALL()
2406    o doc/api_reference added
2407      - a framework for building an API Reference Manual using all
2408        the "protex" comments embedded in the code
2409      - see pkg/generic_advdiff, pkg/mnc for examples
2410    o MNC:
2411      - make myThid the last argument for all subroutines
2412      - new default for the grid files: NO halos
2413      - add useMNC and other run-time flags
2414      - separate per-file-group handling of the unlimited dimension
2415      - early initialization of MNC w/ flags read at the eeboot stage
2416        and lookup tables set in initialize_fixed
2417      - write all MNC output to a freshly-created directory
2418    o thermodynamics sea-ice (thsice) is now tested with testreport.
2419    o test exp. advect_cs: use the standard cs32 grid ; update output.
2420    o Added functionality to grdchk:
2421      pick global i,j,k position (or nearest wet) where to perform check.
2422    
2423    checkpoint52l_post
2424    o new land formulation:
2425      a) use ground enthalpy as prognostic variable to ensure exact
2426         energy conservation.
2427      b) account for water temperature and for latent heat of freezing
2428         in all processes (rain, run-off, ground storage)
2429      c) compute surface and ground temperature implicitly.
2430    o aim_v23 modification for new land model:
2431      a) Treat separately land / ocean / sea-ice surface fluxes
2432         to allow implicit computation of land & sea-ice surface temp.
2433      b) add snow precipitation.
2434    checkpoint52l_pre
2435    
2436    o fix problem (when 1 tile is empty) in min/max monitor.
2437    o fix bug in timeAve (u,vZetatave in common block)
2438    o no restoring terms under ice for pkg/seaice
2439    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
2440    o bug fix for pkg/seaice pickups
2441    o change MNC call locations and add coordinate attributes
2442    o mask vorticity at the corner ; affects global_ocean.cs output
2443    o fix ini_curvilinear_grid ; test CS experiments with mpi
2444    o aim.5l_cs: modify sea-ice fraction input file ; update output
2445    o exf: Adding simple range check routine for exf fields after read
2446    
2447    checkpoint52k_post
2448    o removed top-level directory "diags"
2449      - we migrated these functions to pkg/timeave a long time ago
2450    o fixed bug introduced in pkg/monitor
2451    o accuracy ctrlprec = 32 insuffient for gradient checks using
2452      averaged fields (I/O via cost_averages)
2453      -> use ctrl.h in active_file*.F to control I/O precision.
2454    o paramter list of CALL ADTHE_MAIN_LOOP
2455    o added initial do_the_model_io to ecco
2456    o set all ...Freq to zero after cost_final
2457      taveFreq, dumpFreq, pChkptFreq
2458    o MAIN and ECCO differentiability restored
2459    
2460    checkpoint52j_post
2461    o fix nchklev in tamc.h for global_ocean...
2462    o Bringing flow and store directives up-to-date
2463    o Really weird thing!
2464      call do_the_model_io from the_main_loop with parameters
2465      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
2466      TAF places a faulty re-call of initialise_varia
2467      after cost_final call which should not be there!
2468    checkpoint52j_pre
2469    
2470    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
2471      error messages
2472    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
2473    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
2474      debug output
2475    o modfied mdsio_writefield.F to handle non-global files under exch2
2476    o update AIM Cubed-Sphere exp (aim.5l_cs):
2477      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
2478    o update AIM Equatorial Channel exp:
2479      use standard aim_v23 pkg and change the SST fields to be more realistic.
2480    o globalFile now works with exch2
2481    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
2482      mon_vort3.F to make exch2 friendly with >1 tile per cube face
2483    o limit timeave output for hi-res integrations
2484    
2485    checkpoint52i_post
2486    o removed CPP_EEOPTIONS.h from verification/*/code
2487    o updated the tiling for global_ocean_pressure
2488    checkpoint52i_pre
2489    
2490    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
2491      the old pkg/aim).
2492    
2493    checkpoint52h_pre
2494    o shortened offending lines in exch2_send_rx?.template
2495    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
2496    o genmake2: add build & execute test for NetCDF code
2497    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
2498      old grid files, moved CPP_EEMACROS.h to pkg/exch2
2499    o added useSingleCPUIO flag to monitor.F and mon_out.F
2500    o added temporary hack for sea-ice dynamics on the cube:
2501      metric terms are ignored and it is assumed that
2502      there is no sea-ice on cube faces 1, 2, 4, and 5.
2503    
2504    checkpoint52f_post
2505    o added exch2 cube routines to pkg/exch2
2506    o modified hs94.cs-32x32x5 to use it
2507    o added new grid files to hs94.cs-32x32x5
2508    checkpoint52f_pre
2509    
2510    checkpoint52e_post
2511    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
2512      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
2513    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
2514      to work with implicit vertical advection and AB ;
2515    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
2516    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
2517     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
2518    checkpoint52e_pre
2519    
2520    o fix bug in impldiff when Nr=1 or Nr=2.
2521    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
2522    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
2523    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
2524      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
2525    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
2526    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
2527    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
2528    
2529    checkpoint52d_post
2530    o re-tiled many expts to allow comparison in multi-processor mode
2531      - updated output accordingly
2532      - changed hs94.128x64x5 to use intial T from file rather than use the
2533        random number generator
2534    o add infrastructure in model routines for fizhi and gridalt packages
2535    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
2536    o changes to permit hi-res, cubed-sphere, configuration
2537      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
2538      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
2539      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
2540        of surface winds for the cube
2541      (A verification experiment, based on global_ocean.cs32x15, but with
2542       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
2543       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
2544       complete with example surface forcing files and matlab scripts to look
2545       at the output and compare it with that of global_ocean.cs32x15.)
2546    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
2547       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
2548       to conform to the common rule.
2549    o check-in the first version of the coupler + interfaces for multi-components
2550       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
2551       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
2552       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
2553       - ocean and atmos. share the same horizontal grid (no interpolation).
2554       - exchanges between component and coupler is done in forward_step
2555    o new verification experiment, cpl_aim+ocn:
2556       coupled ocean - AIM atmosphere on cs32 grid.
2557    
2558    checkpoint52d_pre
2559    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
2560    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
2561    
2562    checkpoint52c_post
2563    o Fixing OPTIONS files for use of exf:
2564      - ALLOW_ECCO not needed
2565      - ECCO_CPPOPTIONS.h should not be included from
2566        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
2567        as has been the case in the past
2568      - All cal/exf related options are currently set in
2569        single header file. Should remain so until we
2570        agree on a consistent new policy.
2571    o Removed all CPP options for cal package.
2572      cal has no more CPP options.
2573    o modified STOREs in GAD_ADVECTION
2574    o corrected key comp. for passkey
2575    
2576    checkpoint52b_post
2577    o new version: "thsice" of thermodynamic sea-ice pkg:
2578     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
2579     - modify fluxes but do not change theta directly;
2580     - light cleaning of bulk_force pkg (still needed with thsice).
2581     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
2582       + output_thsice.txt to test thsice & bulk_force pkgs.
2583    o put back grid & coriolis monitor output.
2584    checkpoint52b_pre
2585    
2586    o call "do_the_model_io" at the beginning (=> dump initial state)
2587    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
2588    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
2589      (need info on NUMBER_OF_PTRACERS)
2590    o missing PTRACERS headers in some routines
2591    o default tamc.h in pkg/autodiff supposed to crash
2592      to ensure proper customization
2593    
2594    checkpoint52a_post
2595    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
2596      - moved surfaceTendencyTice from pkg/seaice to main code
2597      - subroutine FREEZE_SURFACE now limits only surface temperature
2598        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
2599        => new output.txt for global_ocean.cs32x15 & global_with_exf
2600      - keep the old version of FREEZE for backward compatibility;
2601        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
2602      - corresponding modifs for TAF directives
2603    o added surface flux output variables to TIMEAVE_STATVARS
2604    o time-averaged output for pkg/ptracers
2605    o fix problem with ECCO-related divided adjoint
2606      snapshot file was missing some ad-variables,
2607      but no warning issued by TAF
2608    
2609    checkpoint52a_pre
2610    o some bug fixes for #undef REAL4_IS_SLOW
2611    
2612    checkpoint52 = ecco_c52_e35
2613    o after testing adjoints of checkpoint51u_post
2614    
2615    checkpoint51u_post
2616    o this is the post-merge tag of the ecco-branch
2617      (needs another clean checkout and re-testing)
2618    o various natl_box_adjoint configs and results
2619      but no input fields
2620    o obcs adjoint not yet merged!
2621    o adding ECCO global 1x1 and 2x2 degree configs
2622    o updated/extended some store directives for seaice
2623    o pkg/ecco now containes ecco-specific part of cost function
2624    o top level routines the_main_loop, forward_step
2625      supersede those in model/src/
2626      previous input data.cost now in data.ecco
2627      (new namelist ecco_cost_nml)
2628    o in ctrl/ cleaned some cross-dependencies and updated CPP options
2629    
2630    checkpoint51t_post
2631    o this is the pre-merge tag of the ecco-branch
2632    
2633    checkpoint51s_post
2634    o cleanup: removed various obsolete #define-s
2635    o pkg/grdchk
2636      - renamed 'ph-grd 3' to 'grad-res'
2637      - merged from ecco-branch
2638        (remaining bug fixes for obcs gradient checks)
2639      - additional high-precision output for testreport
2640        (grep for 'precision_grdchk_result')
2641    
2642    checkpoint51r_post
2643    o cleaned up or removed CPP_OPTIONS.h files
2644    o updated results for some of the tests to reflect the new
2645      optfiles (-ieee: -O0 instead of -O3)
2646    
2647    checkpoint51q_post
2648    o cd_code:
2649      - moved cd_scheme.F -> cd_code_scheme.F
2650      - separate read_checkpoint from cd_code_ini_vars.F
2651      - separated cd_code part from write_checkpoint
2652      - updated AD_SOURCE, generated .flow
2653      - added CD_CODE_VARS.h to the_main_loop
2654      - Moving cd_code specific store dir.s to pkg/cd_code
2655    o ctrl package totally restructured
2656      - pack/unpack now optional and decoupled from
2657        xx_/adxx_ I/O
2658      - ctrl_pack/unpack cleaned
2659        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
2660      - confined inclusion of AD_CONFIG.h to where necessary.
2661    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
2662    
2663    checkpoint51p_post
2664    o create initial cd_code package
2665      - WARNING: the initialization of fields within packages
2666        is broken because INI_FIELDS (where READ_CHECKPOINT is
2667        called) is called *before* PACKAGES_INIT_VARIABLES.
2668        This seems to be backwards since
2669        1) its important to initially zero the entire field including
2670           the "halo" region
2671        2) zeroing needs to be done *before* reading pickup info
2672           and the pickup call might or might not happen in any
2673           particular run
2674      - this needs an overhaul for R2
2675    o cleanup verification/*/code/GMREDI_OPTIONS.h
2676    o cleanup testreport
2677    
2678    checkpoint51o_post
2679    o bringing AD-related verif's up to date with genmake2
2680      - carbon/
2681      - global_ocean.90x40x15/
2682      - hs.94.1x64x5/
2683      - (front_relax/ )
2684    o (more) consistent directory structure for AD-related verif.'s
2685    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
2686    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
2687    o bug fix in find_alpha.F for MDJWF:
2688      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
2689        change rho -> rho-rhoConst
2690      - replace call find_rho to find_rhonum
2691    o initialisation of rFlx extended to full array (required by TAF)
2692      and shifted to thermodynamics
2693    o removed PTRACERS.h in ptracers routine
2694    o added surfacetendencyPtr to S/R parameter list pracers_forcing
2695    o Correcting initialisations for fVerU, fVerV.
2696    o helping TAF to recognize dependency on kUp for
2697      fVerU, fVerV
2698    o Replacing delZ by delR in pkg/ctrl/
2699    checkpoint51o_pre
2700    
2701    o undid all of cp51 pending some cleanups and discussion
2702    o added the [#include "AD_CONFIG.h"] statement to all files that need
2703       it for adjoint/tl #defines
2704     o re-worked the build logic in genmake2 to support AD_CONFIG.h
2705     o removed tools/genmake since it no longer works
2706    
2707    checkpoint51n_post
2708    o modifications to make FREEZE flux visible to pkg/kpp
2709      - moved surfaceTendencyTice from pkg/seaice to main code
2710      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
2711      - subroutine FREEZE now limits only surface temperature
2712        (this means new output.txt for global_ocean.90x40x15,
2713         global_ocean.cs32x15, and global_with_exf)
2714    o added surface flux output variables to TIMEAVE_STATVARS
2715    
2716    checkpoint51n_pre
2717    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
2718    o added [#include "AD_CONFIG.h"] to all files that use the following
2719      defines:
2720      - ALLOW_ADJOINT_RUN
2721      - ALLOW_TANGENTLINEAR_RUN
2722      - ALLOW_ECCO_OPTIMIZATION
2723    
2724    checkpoint51m_post
2725    o incorporating changes to get TAMC/TAF working in genmake2
2726      - added new TAMC/TAF targets to the Makefile
2727      - various cleanups related to package handling
2728      - these changes should have no impact on the forward model
2729    
2730    checkpoint51l_post
2731    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
2732     - faster algorithm for cal_addtime.F
2733     - higher precision arithmetic, where needed
2734     - pkg/exf *startdate variables changed from calendar date to
2735       model integration time
2736    
2737    checkpoint51l_pre
2738    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
2739    o enable to apply restoring on S & T only in a latitude band.
2740    o update output (external_forcing_surf modif. change truncation errors)
2741       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
2742    
2743    checkpoint51k_post
2744    o change default to: useNHMTerms=.FALSE.
2745     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
2746       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
2747     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
2748        exp1, ideal_2D_oce
2749     - change data file of oceanic exp (leave the results unchanged for now)
2750       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
2751    o set gravitySign automatically according to the vertical coordinate used
2752      (and change sign: back to "logical" value: +1 when R increases downward)
2753    o added an include barrier to the default CPP_OPTIONS.h and
2754      removed the #include "PACKAGES_CONFIG.h" from it
2755    o fix a bug in mom_fluxform (from chk51j_post)
2756    
2757    checkpoint51j_post
2758    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
2759    o adjusted some flow directives (dynamics, thermodynamics)
2760    o added cubed-sphere case to test cost function
2761    o heckpoint_lev?_directives.h now include
2762      pkg-specific directives, whenever those are enabled.
2763    o Moving pkg-specific flow directives to corresponding pkg
2764      Moving pkg-specific differentiation list to corresponding pkg
2765      Moving pkg-specific checkpoint-lev storing to corresponding pkg
2766      ---> conventions are
2767           - pkg_ad.flow
2768           - pkg_ad_diff.list
2769           - pkg_ad_check_lev?_dir.h
2770    
2771    checkpoint51i_post
2772    o merge of the branch-genmake2
2773      - knowingly breaks the older genmake
2774      - automatic generation of all ALLOW_${PKG_NAME} defines
2775      - new testreport supersedes older testscript
2776    o large number of package inclusion and header cleanups
2777    checkpoint51i_pre
2778    
2779    o new output for adjoin of global ocean vector invariant
2780    o fix for checkpoint of thermodynamic seaice and bulk_force
2781    o Steph gchem various cleanups
2782    
2783    checkpoint 51h_pre
2784    o fixed some single quotes
2785    o modify gchem pkg to be more versatile
2786    o modifications to clean up dic pkg
2787    o add pkg/cfc
2788    
2789    checkpoint51g_post
2790    o provide links for ARPACK and ADM*TLM
2791    o start removing verification/vero/
2792    o update AD-related stuff
2793      (in particular some IF-statements in model/src/ routines)
2794    o adding to verification/global_ocean.90x40x15/ adjoint of
2795      vector invariant setup
2796    
2797    checkpoint51f_post
2798    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
2799    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
2800      of tracer Green's fucntions for ocean inversion project.
2801    
2802    checkpoint51f_pre
2803    o Added on-the-fly spatial interpolation capability
2804        "USE_EXF_INTERPOLATION" to pkg/exf.
2805      - This is a temporary Cartesian-grid hack until
2806        the super-duper ESMF coupler becomes available.
2807      - See verification/global_with_exf/README for usage example.
2808      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
2809        flags and modified pkg/seaice accordingly.
2810    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
2811        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
2812        non-local transport term.
2813    
2814    checkpoint51e_post
2815    o pkg/mom_vecinv:
2816      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
2817      - add time-ave diagnostic of vorticity advection.
2818    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
2819    o atmospheric geopotential: - include water vapor effect;
2820                                - use p^kappa in p* scaling.
2821    o land pkg: read initial state from files.
2822    o AIM : add stratospheric drag in the upper level
2823    
2824    checkpoint51d_post
2825    o change function ILNBLNK (=> last non-blank char.) to return zero
2826      (instead of the string length) when the string. char is empty
2827    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
2828    o modif's to restore TAMC compatibility
2829      - avoid "_d" constructs in PARAMETER declarations
2830      - avoid interrupting lines by comment lines
2831    o Use cluster local disks for purely local I/O
2832      vs. globally visible disks needed for ctrl stuff
2833      (merged from ecco-branch)
2834      - new active_file_loc... and mdsio_..._loc routines
2835      - affected packages: autodiff, ctrl, grdchk, mdsio
2836    
2837    checkpoint51c_post
2838    o introducing integer flag debugLevel
2839      - debLevZero: suppress all output
2840      - debLevA: standard
2841      - debLevB: equivalent to current debugMode=.TRUE.
2842    o introducing pathname variable mdsioLocalDir for mdsio
2843      that can be specified at runtime
2844      (relevant for cluster I/O to local disk)
2845    `
2846    >>>checkpoint51b_post
2847    adjoint of ptracers
2848    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
2849    o extended state in checkpoint_lev?, etc.
2850    o alternative ctrl/cost with tr1 or ptracer
2851    o new comlev1_bibj_ptracers
2852    o new ptracers.flow
2853    o made ptracers_forcing same as external_forcing_s
2854    o added verification for adjoint with ptracers
2855      - adm. grdchk fail so far
2856      - tlm. grdchk OK
2857      - checked tapelev/comlev recomputations: OK
2858    <<<checkpoint51b_pre
2859    
2860    checkpoint51a_post
2861    o added code for biogeochemistry package
2862      - new pkgs: dic, gchem
2863      - new subroutine in ptracers
2864    o modify code for biogeo packages
2865      - in model/src and pkg/ptracers
2866    
2867    checkpoint51
2868    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
2869      - autodiff, ctrl, exf, grdchk, seaice
2870      kept separate packages
2871      - cost, ecco, obcs
2872    o updating verification/internal_wave, verification/lab_sea
2873      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
2874    
2875    checkpoint50i_post
2876    o Preparing next differentiable checkpoint and sync
2877      of MAIN vs. ecco-branch
2878      - 1st step: this one is differentiable
2879      - 2nd step: next(! not this) checkpoint will have updated packages
2880                  from ecco-branch)
2881    
2882    checkpoint50h_post
2883    o new package "land": provide surface BC for AIM.
2884    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
2885    o AIM: use true log-P extrapolation for near surface temp (= as in
2886        F.Molteni paper) ; update aim.5l_cs output.
2887    o New variable in PARM03 for more flexible pickups
2888    o somewhat cleaned package initialisation sequence for
2889      ctrl/ cost/ ecco/ in packages_... routines
2890    
2891    checkpoint50g_post
2892    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
2893      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
2894      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
2895        made the default because of faster convergence than ADI
2896    
2897    checkpoint50f_post
2898    o exf totally restructured
2899      - replaced all exf_set_ routines by one generic exf_set_gen.F
2900        and made sure it's still differentiable
2901      - split exf_getffields.F into new exf_bulkformulae.F
2902      - exf_inscal_/exf_outscal_ suffixes consistent with field names
2903      - updated adjoint/makefile and relevant verif. accordingly
2904    
2905    checkpoint50f_pre
2906     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
2907          + change Evap over land. (update aim.5l_cs output)
2908     o added missing .cvsignores and made uniform across expts
2909     o changed configuration of tidal_basin_2d expt
2910     o added pkg/debug functions for tracing code in fatal crashes
2911     o tidied pkg/monitor to use MONITOR_OPTIONS.h
2912     o new fn in pkg/monitor to stop model if solution grows too big
2913     o removed lots of single quotes from comments
2914    
2915    checkpoint50e_post
2916    o make KPP work with PTRACERS
2917     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
2918       nearly a copy of kpp_transport_s
2919     - there is no analogue to SurfaceTendencyS, so I have to use
2920       gPtr(of the surface layer) instead
2921    o add a new platform SunFire+mpi (SunFire 15000) to genmake
2922    checkpoint50e_pre
2923    
2924    checkpoint50d_post
2925    o change kpp output from multiple-record state files to single-record state
2926      files analogous to write_state.F
2927    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
2928      analogous to the cg2d-related output.
2929    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
2930      so that writing to internal file fn (with length 512) fails.
2931    checkpoint50d_pre
2932    
2933    checkpoint50c_post
2934    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
2935    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
2936    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
2937    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
2938    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
2939    
2940    checkpoint50c_pre
2941    Merging from release1_p13:
2942    o bug fix for pkg/seaice dynamic solver
2943    o Added SEAICE_initialHEFF to pkg/seaice
2944    
2945    checkpoint50b_post
2946    o store u*,v* in gU,V instead of in guNm1,gvNm1
2947    o in order to put the momForcing out of the Adams-Bashforth:
2948      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
2949      to timestep.F
2950    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
2951    o re-generate output for highly sensitive test-exp:
2952       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
2953    
2954    checkpoint50b_pre
2955    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
2956    o corrected CPP option mismatch in exf_Bulk... functions for case
2957      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
2958    
2959    checkpoint50a_post
2960    o Bug fix for merging between c50 and KPP.
2961      ikey was passed from thermodynamics to kpp_calc via
2962      common block rather than being recomputed in kpp_calc,
2963      in contradiction with new key itdkey.
2964      New key ikppkey created, and tamc.h headers updated.
2965    
2966    checkpoint50
2967    - 2nd step of merge with ecco-branch:
2968      merge changes in ecco-branch back into main trunk
2969    - bug fix in find_alpha
2970    - more storing in gmredi_calc_tensor.F, kpp_routines.F
2971    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
2972    - merged some sliced AD support routines
2973    
2974    checkpoint49
2975    merged from ecco-branch:
2976    o exf:
2977      - Enable initialisation of forcing fields to constant
2978        (runtime) values.
2979      - in exf_getffields.F
2980        Reduce i-/j-loop to interior domain, discarding overlaps.
2981        That also fixes wrong TAF-key computations for key_1, key_2
2982        with bulf formulae.
2983      - exf_init.F modify #ifdef for exf_init_evap
2984      - exf_getffieldrec.F, ctrl_getrec.F
2985        The following INT-usages are not safe:
2986          fldsecs  = int(fldsecs/fldperiod)*fldperiod
2987          fldcount = int(fldsecs/fldperiod) + 1
2988        and were modified.
2989    o autodiff: checkpoint_lev...
2990      - updated storing for bulk formulae (some arrays were missing)
2991      - added state for seaice package
2992      - synchronized with main branch
2993    o DIVA:
2994      Modif.s in
2995      - the_main_loop.F
2996      - the_model_main.F
2997      and added cost_final_restore.F cost_final_store.F
2998      o With these changes, it is possible to fully separate
2999        the first forward run to compute the cost function (mdthe_main_loop)
3000        and adjoint runs over individual DIVA intervals (adthe_main_loop)
3001        into separate model executions.
3002        This enables better tuning of DIVA to given queue sizes.
3003      o Loss of cost function value in consecutive DIVA runs is
3004        fixed by storing to 'costfinal' file.
3005      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
3006        beginning/end of adjoint integration is accounted for.
3007      The current changes apply to TAF-1.4.26.
3008      TAF has one remaining bug, requiring one manual change
3009      (see MITgcm manual).
3010    o cal: synchronized between MAIN and ecco-branch
3011    
3012    checkpoint48i_post
3013    o Changes to restore differentiability of code w.r.t. previous tag
3014      (mostly adding new routines to make list and replacing
3015      pressure by totPhiHyd).
3016    o Updated and merged grdchk package
3017      - has both ADM and TLM checks
3018      - works for single- and multi-proc.
3019      - output cleaned
3020      - worked successfully for parallel DIVA
3021    o genmake:
3022      - Adding -platform=SP4
3023      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
3024    o Modif. for DIVA:
3025      ctrl_unpack should not be called in intermediate DIVA interval.
3026      (similar thing would apply for active files such as
3027      tbar, sbar, psbar, which should not be reinitialised;
3028      only relevant for ecco-branch)
3029    
3030    checkpoint48h_post
3031    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
3032    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
3033    o Added SEAICE_initialHEFF to pkg/seaice
3034    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
3035    
3036    checkpoint48g_post
3037    --- EOS:
3038    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
3039      store total Potential in totPhyHyd for diagnostics & EOS.
3040    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
3041    --- Pressure/geopotential gradient:
3042    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
3043    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
3044      ( changes results of global_ocean_pressure )
3045    o NLFS + z-coord.: add eta*Rho' contribution.
3046    o accurate phiHyd when using interface-W at the middle between 2 centers
3047     ( changes results of ideal_2D_oce )
3048    o includes r* 2nd term in potential gradient.
3049    
3050    checkpoint48f_post
3051    Merging from release1_p12:
3052    o Modifications for using pkg/exf with pkg/seaice
3053      - improved description of the various forcing configurations
3054      - added basic radiation bulk formulae to pkg/exf
3055      - units/sign fix for evap computation in exf_getffields.F
3056      - updated verification/global_with_exf/results/output.txt
3057    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
3058      (SBO) core products, including oceanic mass, center-of-mass,
3059      angular, and bottom pressure (see pkg/sbo/README.sbo).
3060    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
3061      to avoid negative values in shallow regions.
3062      - updated verification/natl_box/results/output.txt
3063      - updated verification/lab_sea/results/output.txt
3064    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
3065    o Added useSingleCpuIO option (see PARAMS.h).
3066    o Updated useSingleCpuIO option in mdsio_writefield.F to
3067      work with multi-field files, e.g., for single-file pickup.
3068    o pkg/seaice:
3069      - bug fix in growth.F: QNET for no shortwave case
3070      - added HeffFile for specifying initial sea-ice thickness
3071      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
3072    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
3073      kpp_transport_t.F, forward_step.F, and the_main_loop.F
3074    o pkg/seaice:
3075      - adjoint-friendly modifications
3076      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
3077    
3078    checkpoint48e_post
3079    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
3080    o dynamics: change definition of computational domain & adapt mom_fluxform
3081      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
3082    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
3083        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
3084        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
3085        global_ocean.90x40x15 global_with_exf global_ocean_pressure
3086        inverted_barometer solid-body.cs-32x32x1
3087      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
3088    
3089    checkpoint48d_post
3090    o in preparation for r*:
3091     a) use pre-computed gradient of hydrostatic potential:
3092        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
3093     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
3094        => affects results of glob_oce_pressure (different truncation error)  
3095      update output.txt of ideal_2D_oce & global_ocean_pressure
3096    
3097    checkpoint48d_pre
3098    o in preparation for r*:
3099      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
3100      pass the 2 comp. of the grad. as arguments to momentum S/R.
3101      but for the moment, only used if it does not change the results.
3102    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
3103    
3104    checkpoint48c_post
3105    Modifications in treatment of initial flux forcing controls
3106    to avoid extra storing of flux fields.
3107    
3108    checkpoint48c_pre
3109    o Added tidal_basin_2d experiment (currently 1D!)
3110    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
3111    
3112  checkpoint48b_post  checkpoint48b_post
3113  o r* coordinate added in #ifdef NONLIN_FRSURF block.  o r* coordinate added in #ifdef NONLIN_FRSURF block.
3114   (modification to pressure gradient not yet implemented)   (modification to pressure gradient not yet implemented)

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