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revision 1.682 by jmc, Mon Jun 19 01:06:57 2006 UTC revision 1.978 by jmc, Thu Apr 24 03:25:11 2008 UTC
# Line 4  $Name$ Line 4  $Name$
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    o tutorial_deep_convection :
8      update the set-up and increase resolution and domain size ; start
9      from pseudo initial conditions = output at t=120mn in order to see
10      something happening when running testreport.
11    o pkg/seaice: add os7mp as an advection scheme
12                  add check for advection schemes
13                  add a flag for restoring T and S underneath sea ice
14    o pkg/my82: add netcdf-support and diagnostics
15    o thsice pkg:
16      - Now hsMax limits snow heitght by turning it into ice following
17        flooding scheme (and now conserving energy)
18      - Slight rewriting of the formula in thsice_calc_thick.F
19      - Parameter rhowi eliminated to be replaced by floodFac = (rhosw-rhoi)/rhos
20        --> changes results of global_ocean.cs32x15.icedyn and global_ocean.cs32x15.thsice
21    
22    checkpoint59p
23    o gchem / dic / cfc :
24      - add useDIC, useCFC , read from "data.gchem" (& hold in GCHEM.h);
25      - add new parameter files: "data.dic" & "data.cfc" ;
26      - various re-arrangement in initialisation & header file ;
27      - fix tutorial_global_oce_biogeo for multi-threaded test.
28    o pkg/dic: test for "pickup_dic" file when restarting ;
29      if no pickup-file, can restart with a re-initialised pH (same as it did
30      before) providing pickupStrictlyMatch is set to False.
31    o change argument list of S/R PTRACERS_WRITE_PICKUP & MYPACKAGE_WRITE_PICKUP
32      + fix call to S/R GGL90_WRITE_PICKUP & DIC_WRITE_PICKUP
33    o add a "warning" (to Error msg file) when an Active Tracer is not using AB-2
34      and staggerTimeStep is off (needed for stability of Internal-wave dynamics).
35    o move out of PARAMS.h & data the last pieces of old-ptracer code: tauTr1ClimRelax,
36     & lambdaTr1ClimRelax ; put those 2 params in PTRACERS_PARAMS.h & data.ptracers
37       (note: not clear to me what lambdaTr1ClimRelax is still used for ...)
38    o pkg/mom_vecinv: - new parameter "selectVortScheme" to select which
39       scheme to use for vorticty-term ;
40     - compute upwindVorticity=T case within mom_vi_u/v_coriolis_c4.F
41       (with default selectVortScheme, return to original discretisation)
42     - remove weird combination (e.g.: upwindVorticity & highOrderVorticity)
43    o pkg/seaice: add a line to the summary to indicate grid type (B/C)
44    o in mom_calc_visc, fix average value of viscAh_W & viscA4_W next to the
45      bottom ; only used with variable horizontal viscosity and non-hydrostatic.
46      also fix diagnostics VISCAHW & VISCA4W.
47    
48    checkpoint59o
49    o dome/code/obcs_calc.F: avoid division by zero (detected using gfortran).
50    o change the loop ordering in most gad_*_adv_x.F to improve vectorization:
51      move a few statemens out the main loop into separate loops
52    o pkg/shelfice:
53      - sort out freshwater flux; convert freshwater fluxes to mass fluxes
54        (kg/m^2/s), does not break tests, because in verification/isomip,
55        rhoConstFresh=rhoConst (by accident)
56      - rearrange computation of tLoc, sLoc, pLoc to make code more efficient
57      - move S/R find_rho_scalar, pkg/ecco/sw_ptmp.F, pkg/ecco/sw_adtg.F into
58        new file model/src/seawater.F, so that they are available for all pkgs.
59      - convert potential temperature into in-situ temperature. This changes the
60        isomip tests => update tests
61    o add a flag writePickupAtEnd (default=true) to be able to suppress
62      writing a pickup at the last timestep
63    o tools/mpack-1.6 :
64      - disable automake (not working) and autoconf (not needed).
65      - update to version 1.6.4 which fix MD5 code on some 64 bits platforms
66        also cleaner with much less compilation warnings.
67    o pkg/profiles:
68      rename profiles_interp_mean_genericgrid as profiles_interp_mean_gg
69      (for "less than 32 characters name" compiler requirement)
70    o pkg/obcs and pkg/exf: added capability to specify seaice open boundary
71      conditions that have a different sampling frequency than S/T/U/V obcs
72    o pkg/diagnostics (stats-diags):
73      - fix global Min/Max in case 1 processor get only empty tiles
74    o genmake2: replace (4 times)
75         make genmake_tc_1.o >> genmake_warnings 2>&1
76      with
77         COMM="$CC $CFLAGS -c genmake_tc_1.c"
78         echo $COMM >> genmake_warnings
79         $COMM >> genmake_warnings 2>&1
80      to make genmake2 always see the value of CC as specified in the optfile.
81    o generic_advdiff: - prather advection scheme (SOM) coded for CS-grid.
82      - add diagnostics for 1srt & 2nd Order moments and sub-grid variance.
83      - modify verification advect_cs test to test SOM-advection on CS-grid.
84    o pkg/ctrl:
85      - Rewrite of ctrl_map_ini_ecco.F,
86        introducing a generic routine (ctrl_map_ini_gen.F).
87      - Modification of ctrl_bound/adctrl_bound handling control vector bounds.
88    
89    checkpoint59n
90    o pkg/diagnostics: for large number of diagnostics, store diagnostic mate
91      number in dedicate array "hdiag":
92      - new version of S/R DIAGNOSTICS_ADD2LIST : DIAGNOSTICS_ADDTOLIST
93        with 1 more argument (mate number); modify old version DIAGNOSTICS_ADD2LIST.
94      - many small changes (integer format) for large number of diagnostics
95      - start to use DIAGNOSTICS_ADDTOLIST (necessary for diagnostics with
96        a counter mate) in pkg diagnostics, ptracers, thsice & aim_v23.
97    o add parameter rotateGrid and Euler angles EulerPhi/Theta/Psi. For
98      usingSphericalGrid, this allows to define the rotated grid coordinates
99      via phiMin/thetaMin/dxSpacing/dySpacing, etc., but then re-compute the
100      geographical coordinates according to the inverse of the rotation defined
101      by the Euler angles, so that Coriolis parameter and online-interpolation by
102      exf works with the geographical coordinates on XC/YC/XG/YG.
103      Naturally, this feature does not work with all packages, so some
104      combinations are prohibited in config_summary (flt, flt_zonal, ecco,
105      profiles), because there the coordinates are assumed to be regular
106      spherical grid coordinates.
107    o pkg/gmredi,ctrl,ecco,autodiff,grdchk and model/src,inc:
108      - introduce isopycnal diffusion coefficient control.
109    o tools/adjoint_options:
110      - additional control vector components.
111    o pkg/mnc: have mnc create marginally meaning full coordinate variables
112      (that is the grid indices) if usingCurvilinearGrid and NOT EXCH2
113    o pkg/mypackage:
114      - add example of read/write pickup for state-var ;
115      - add entry points to the main code for state-vars diags & write-pickup.
116    o pkg/exf: rewrite of exf_getffieldrec.F to properly deal with year
117      transitions for useExfYearlyFields
118      - add new subroutine that determines the file to read from for
119        use*YearlyFields = .TRUE. and .FALSE.
120      - add a verification experiment to global_with_exf that tests
121        useExfYearlyFields with USE_EXF_INTERPOLATION defined
122    o pkg/obcs/exf: add useOBCSYearlyFields (=.FALSE.) to obcs with exf in
123      analogy to useExfYearlyFields; rearrange obcs_prescribe_read: two new
124      subroutines (which could be generated from a template, because they are
125      almost identical), for now they are included in obcs_prescribe_read.F for
126      simplicity
127    o pkg/exf:
128      - add a little more diagnostic to exf_interp_read (in analogy to
129        mds_read_field, can be turned off with debugLevel < debugLevA=1)
130      - improve vectorizability of exf_interp for TARGET_NEC_SX, makes code
131        ugly but fast by unrolling short inner loops, inserting a unroll=8
132        directive in routine lagran, and splitting a loop and making do while the
133        outermost loop (the latter requires the intoduction of index arrays)
134    o pkg/obcs: replace obcs_apply_area/heff/hsalt/hsnow with obcs_apply_seaice
135    o pkg/seaice: moved DIFFERENT_MULTIPLE from seaice_model to seaice_dynsolver
136      http://forge.csail.mit.edu/pipermail/mitgcm-devel/2008-January/003173.html
137    o verification/seaice_obcs: updated for restart test and latest options
138    o pkg/seaice: add a new flag SEAICEuseTEM to use a slightly different
139      ice rheology (so-called truncated ellipse, that gets rid of tensile stress);
140      for now this is only available for the C-grid code and also within
141      #ifdef SEAICE_ALLOW_TEM, because this option may slow down the EVP code
142    
143    checkpoint59m
144    o pkg/seaice: use different time constant for melting (SEAICE_gamma_t)
145      and freezing (SEAICE_gamma_t_frz) ice due to mixed layer temperature
146    o gad_som : fix flux output (& diagnostics) to have same units as other  
147      advection scheme fluxes (was previously multiplied by deltaT).  
148    o added verification/seaice_obcs both to test seaice open boundaries
149      and to provide an example matlab scrpt for generating them
150    o added verification/lab_sea/input.salt_plume for testing pkg/salt_plume
151    o pkg/salt_plume: clean up salt_plume_frac.F to
152      remove redundancy in PlumeMethod 1 and 4
153    o pkg/kpp: added saltplume diagnostics
154    o pkg/obcs and pkg/seaice:
155      - do not set uice and vice to zero when OB*icefile are unspecified
156      - OBCS_SEAICE_AVOID_CONVERGENCE is undefined by default
157      - moved seaice tracer obcs after call to seaice_growth
158    o pkg/salt_plume: added various options for salt plume depth
159      criterion and for vertical distribution of the salt
160    
161    checkpoint59l
162    o pkg/ptracers: new version of ptracers pickup:
163      read meta file and write only fields which are needed to restart.
164      ( same logic as main pickup file ; also using pickupStrictlyMatch )
165    o pkg/seaice:
166      - add timescale for melting due to warm mixed layer as a means of
167        setting SEAICE_availHeatFrac more conveniently
168      - add a CPP-flag/runtime parameter check for flooding algorithm
169      - reformulated availHeat in seaice_growth.F to be independent of AREA
170    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
171      unit changes
172    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
173    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
174      SX vector computer.
175    o pkg/seaice:
176      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
177        seaice forcing fields can now be read only through pkg/exf
178      - removed some unused halos
179    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
180    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
181      or U/VICE from U/VWIND before computing U/VSTRESS
182    
183    checkpoint59k
184    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
185      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
186    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
187      all experiments pass when compile with un-initialised var. checking option.
188    o added pkg/salt_plume
189    o script to test restart (for now, in MITgcm_contrib/jmc_script)
190    o pkg/seaice: new read/write pickup version.
191      read meta file and write only fields which are needed to restart.
192      ( same logic as main pickup file ; also using pickupStrictlyMatch )
193    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
194    o lab_sea.hb87: modify the domain & update output.hb87.txt :
195      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
196      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
197      process. Fixed here by closing the domain at the Northern boundary.
198    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
199    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
200      a set of consecutive levels in/from a 3-D array.
201    o pkg/ptracers:
202      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
203      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
204    
205    checkpoint59j
206    o in pkgs: dic, obcs, offline, rbcs:
207      standard way to compute coeff. for time interpolation between 2 time reccords
208      which retains full precision (& make results less dependent on compiler).
209      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
210    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
211      packages instead of reading ice cover and wind speed separately
212    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
213     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
214      to allow to compile customized code before the update)
215    o cleaning-up:
216      - fix CPP instruction syntax in pkg/obcs
217      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
218        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
219      - fix some threads issue in IO parts.
220    o pkg/dic:
221      - add tons of "_d 0" (--> much better testreports !)
222       and then update outputs of tutorial_global_oce_biogeo
223    o pkg/mom_fluxform:
224      add a special version of momentum advection intended to conserve momentum
225      next to a bathymetry step or a coastline edge. (default = off = #undef)
226    o new read/write pickup version:
227      - for now, only implemented for main (mdsio) pickup file.
228      - write out only what is needed to restart; merge pickup_nh , pickup_ph
229        and main pickup together.
230      - read meta file; read only what is needed to restart; stop if a field
231        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
232        if it make sense (even if the restart is not perfect).
233      - if no meta file, assume that pickup to read corresponds exactly to
234        a pickup that would currently be written.
235      - read pickup written in the old format (until checkpoint59i) if it
236        recognizes an old meta file (no field-list).
237      - add a meta file in exp. which starts from a pickup: 2 cases:
238        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
239         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
240        b) a meta file describing the content of the associated pickup file
241         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
242    o pkg/mdsio & pkg/rw:
243      - new routine to read a meta file ; new set of routine to read
244        Multiple-fields file (with meta file).
245    o added open boundary conditions capability for seaice
246        HSNOW, HSALT, UICE, and VICE
247    
248    checkpoint59i
249    o adjoint:
250      * fix multiDimAdvection adjoint
251        (partial recomputation problem by TAF for fVerT(:,:,kDown)
252        and comlev1 size definition (maxpass vs. max. number of tracers)
253      * verification/global_ocean.90x45x15 adjoint now tests
254        NLFS and multiDimAdvection using DST3 (=30)
255      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
256    o pkg/kpp: add "_d 0" to real constant (if missing);
257      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
258      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
259    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
260      for internal parameters related to restart process (formerly from PARAMS.h)
261      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
262    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
263      as argument. (only atm2d & obcs write_pickup have not yet been updated)
264    o pkg/monitor:
265      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
266      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
267      - account for deep Atmosphere factor and density factor (anelastic)
268    o added open boundary conditions capability for seaice HEFF and AREA
269    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
270      thermodynamics
271      - requires a little reorganization, which affects the testreport results
272        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
273        so that now the conservative form is tested
274      - add a few comments
275    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
276    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
277    o add new diagnostics to seaice: advective, diffusive fluxes (only for
278      multidim-advection, for scheme 2 they are not filled) and transports,
279      thermodynamic growth rates
280    o change units of EmPmR (inside the code, + within coupling interface)
281      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
282      Affects results @ truncation level (cg2d match) and update output of
283       experiments: lab_sea(6), global_ocean.90x40x15(10),
284      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
285      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
286      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
287      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
288    
289    checkpoint59h
290    o pkg/exf:
291      - improve vectorization by moving if-statement out of loops in
292        exf_mapfields, exf_radiation
293      - exf_bulkformulae.F: introduce 2D fields and vectorize code
294    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
295    o testreport:
296      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
297        monitor & update offline_exf_seaice exp. output.
298      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
299    o pkg/seaice:
300      - bug fix in the evp solver: boundary conditions were affected be
301        masking of zMax/zMin (changes results)
302      - minor bug fix in boundary conditions in seaice_calc_strainrates
303        (changes results for no_slip)
304      - seaice_lsr.F: make interpolation of eta dependent on boundaries
305      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
306      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
307        stress formulation and no-slip boundary conditions
308    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
309      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
310    o pkg/seaice: a first HSALT time stepping equation has been checked in
311    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
312      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
313      without requiring DO-IF statements
314    o pkg/thsice:
315      use continuous power-law function for partition of energy between lateral
316      melting/freezing and thinning/thickening ; old code using step function
317      still available with #undef THSICE_FRACEN_POWERLAW
318      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
319    o testreport: change AD testing : check against results/output_adm.txt
320      using same scripts as for forward test.
321    
322    checkpoint59g
323    o adjoint testing: in preparation for changing testreport:
324      - output format: cost and grad written on separated lines
325      - ad output results in directory "results" (instead of "results_ad")
326    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
327    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
328    o pkg/ecco: allow user defined cost function contributions
329    o testreport:
330      Allow to choose (per experiment) the list of tested output variables
331       and the main variable (used to issue a pass/FAIL ) ;
332      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
333      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
334      Also modify printing of summary:
335       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
336       b) echo the list of tested variables in the individual summary.txt of
337          each experiment.
338    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
339      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
340      (but still depend on the tile decompostion of the domain).
341    o pkg/seaice: change a discretization detail to make the B-grid code
342      "more symmetric". This change is likely to remove all "ridges/leads" that
343      where quasi-aligned with the grid in B-grid solutions. It may also be
344      the solution to the stress coupling issues with the B-grid.
345    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
346      remove .cvsignore from input dir. (since testreport no longer run here).
347    o pkg/thsice:
348     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
349     - fix reshaping of sea-ice just after advection:
350       melt all the ice only if ice-volume is too small.
351     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
352       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
353     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
354    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
355      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
356    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
357      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
358      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
359      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
360      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
361      -> update output.txt
362    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
363     this affects truncation error: -> update output.txt of exp:
364      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
365      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
366    
367    checkpoint59f
368    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
369    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
370      a bounded range (in forward mode)
371    o pkg/ecco, ctrl, autodiff and mom_common:
372     internal parameter controls, completements of implementations
373    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
374    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
375      (not seem any difference in testing results).
376    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
377       at face corners.
378    o pkg/generic_advdiff:
379     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
380      loop range indices for computing vertical advection tendency
381      and do the calculation in the interior only (no overlap) ;
382      for now, only implemented for SOM advection (to save CPU time).
383     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
384    o exch2 adjoint
385      First set of changes:
386      - add exch2 hand-written adjoint templates
387      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
388        This will require cleanup in pkg/autodiff/*.F
389        (changed routines currently kept separate in verif. code/)
390      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
391        that used to hide exch2 or cubed-sphere specific code
392        (commented via 'cph-exch2')
393    o pkg/seaice
394      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
395    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
396       output of global_ocean.cs32x15.thsice .
397    
398    checkpoint59e
399    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
400      for B-grid vector (not yet tested) and C-grid vector (<- only used
401      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
402    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
403      (#ifdef ALLOW_SALT_PLUME)
404    o gather_2d/scatter_2d: removed halo regions
405    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
406      scheme and the corresponding test case (under front_relax dir). For now,
407      only available with Skew-flux form and not yet tested in realistic set-up.
408      adjoint: store directives updated, but gradient checks deteriorated,
409      so maybe GM/Redi adjoint is now broken.
410    o seaice adjoint
411      * add AREA, HEFF, HSNOW as control variable
412        (should not change lab_sea results)
413      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
414    o pkg/seaice:
415      * added computation of saltFlux in seaice_growth;
416        For time being, sea ice salinity is assumed constant
417        contribution of snow flooding to freshening of sea ice is neglected.
418        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
419        defaults to 0.0 in order to maintain backward compatibility.
420        Typical values for SEAICE_salinity are 4 to 10 g/kg.
421      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
422      * added SEAICE_availHeatFrac, which specifies fraction of surface level
423        heat content used to melt or grow ice
424      * commented out cap of HICE: it helps keep ice thinner
425      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
426      * applied OBCS T/S mask to HEFFM sea ice mask
427    
428    checkpoint59d
429    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
430     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
431     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
432    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
433     and change default value of parameter "GM_Small_Number";
434     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
435       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
436       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
437    o pkg/ecco: cost function when applying pkg/smooth to controls
438    o pkg/ctrl: add forcingPrecond run time parameter
439    o pkg/seaice:
440     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
441     - fix bug in metric terms of u-equation in LSR solver (implicit part),
442       changes verification/lab_sea
443     - rearrange implicit part of u-equation in LSR solver to make it easier to
444       read, understand, and debug. This causes changes at the truncation level.
445     - fix (serious) bug in the boundary conditions (sign error in the implicit
446       part) of the LSR solver. Changes all LSR results.
447     - fixed problem with HSNOW initialization to avoid thick snow when AREA
448       is initilized with small values - does not change lab_sea results.
449     - added HsnowFile initialization capability
450    o pkg/smooth: addition to model/src and pkg/ctrl so allow
451     initialization of pkg/smooth and application to control vector
452    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
453    o dependencies: pkg/profiles requires pkg/cal
454    o pkg/profiles:
455     - added option ALLOW_PROFILES_GENERICGRID
456         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
457         that interpolation information (grid points and coefficients) is provided
458         within the netcdf input files.
459         -> sample matlab scripts can be found in MITgcm_contrib/gael
460         that allow you to prepare netcdf input files.
461     - also modified: cleaner include statements, cleaner error print statements,
462       cleaner stops when error, and more tests of the netcdf input files consistency.
463    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
464    o pkg/seaice:
465     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
466       requires a new routine: seaice_diagnostics_fill.F
467     - make sure that seaice does not move if not forced (pressure replacement
468       method, Hibler and Ip, 1995), changes results
469     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
470     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
471       It is turned off by default (=-1.), because it changes the results.
472     - make it possible to read AREA from a file, too.
473    
474    checkpoint59c
475    o add S/R and diagnostics for oceanic mixed-layer depth
476    o move GMRedi call after all vertical mixing schemes (including KPP)
477    o pkg/thsice:
478     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
479      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
480    o pkg/obcs:
481     - bug fix for balance code
482    o pkg/seaice:
483      - allow values of SEAICE_elasticParm > 1
484      - add new parameter SEAICE_evpTauRelax as an alternative
485        to SEAICE_elasticParm
486      - make lsr boundary conditions free slip (by default), changes result
487      - add code for no slip boundary conditions for lsr
488      - set minimum of zeta to zero (and not 4e8) (changes results)
489      - add a cap on AREA after advecting AREA if seaice_growth is not called
490    o change calculation of Visbeck K:
491      - no longer depend on tapering scheme; instead, compute slope (limited
492        by GM_maxSlope). this is equivalent to what was comuted before with
493        clipping or linear tappering.
494      - fix vertical averaging (wrong by 1/2 level)
495      - leave the old version (but will not be maintained) within
496        #ifdef OLD_VISBECK_CALC / #endif
497      - update output of exp. ideal_2D_oce
498    o change error catch in calc_r_star to improve vectorization
499    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
500      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
501    o adjoint:
502      Re-organized adjoint checkpointing according to Matt Mazloff
503      (but with modifs/completions/cleanups)
504      Storing is now bundled into large arrays to optimized I/O
505      (and second step in cleanup of the_main_loop)
506    
507    checkpoint59b
508    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
509      - export/import (between ocean & coupler) fields needed for ocean DIC.
510    o pkg/seaice:
511      - get rid of three more exchanges seaice_calc_viscosities (required
512        different loop boundaries in seaice_lsr and seaice_ocean_stress)
513      - bug fix in seaice_ocean_stress (update of lab_sea required)
514      - reduce loop boundaries to necessary minimum also in seaice_evp
515      - go back to the old way of computing deltaC/Z as the adjoint likes that
516        better
517    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
518      passive tracer to an Age Tracer) + update output.txt
519    o pkg/exf:
520      - implement A-grid / C-grid selection for wind-stress input files.
521      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
522      for now, in exf_bulk_largeyeager04.F only :
523      - change implementation for case where windspeed + 2. components wind-stress
524        are read-in. AND use rhoConstFresh to convert evap.
525    o pkg/seaice:
526      - use correct EXCH_UV for wind-forcing (on A-grid).
527      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
528        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
529    o pkg/exf:
530      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
531      EXF_INTERPOLATION:
532      - merge global_with_exf/code version of exf_interp_read.F
533        to the main code ;
534      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
535        reading the file ; Important: This options needs to be defined to recover
536        previous code.
537        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
538      - no longer loose real*8 precision along the way when using exf_iprec=64.
539    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
540      - change discretisation of evp-solver in order to avoid another exchange
541        (changes lab_sea) and clean up a little
542      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
543        help the adjoint (this also changes the results slightly)
544      - add a few "_d 0" where they had been missing in seaice_evp.F
545      - cleaning up: remove unused seaice_calc_rhs.F
546    o pkg/exf: some cleaning-up:
547      - change various "constants" into runtime parameters
548      - cleaned-up Large&Yeager04 routine which should eventually
549        replace exf_bulkformulae.F (changed names of S/R and CPP)
550        and merged various ALLOW_ATM_WIND options
551     only used with thsice pkg (in thsice_get_exf.F):
552      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
553        which are used when useStabilityFct_overIce=TRUE (= the default)
554      - change default values of ice & snow emissivity and scale downward LW
555        by ice & snow emissivity.
556    o pkg/thsice:
557     fix few little problems, in thsice_calc_thickn.F:
558      - growth vertically (and not laterally) if iceFrac == iceMaskMax
559      - melt only laterally if hIce < hThinIce (as the comments say)
560      and in thsice_extend.F:
561      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
562      - start to form ice as soon as the minimum ice-volume is reachable.
563     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
564      and cpl_aim+ocn
565    o pkg/kpp
566     - move computation of surface related input fields to KPP into a new
567       subroutine kpp_forcing_surf.F
568     - remove wrong (within bi,bj loops) EXCH calls.
569     - little cleaning (add argument myThid in last position, cvs header ...)
570     - for now, fix conservation problem by exchanging KPPviscAz (may not
571       be the best fix)
572    o pkg/seaice
573     - check for inconsistent evp parameter/cpp-flag combination
574     - remove leftover errIO flat for obsolete name list error handling
575    o OpenAD
576     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
577    
578    checkpoint59a
579    o pkg/seaice: some parameter clarifications and a little bit of clean up
580    o pkg/thsice: rename run-time parameters:
581       himin       -> hIceMin
582       himin0      -> hThinIce
583       hihig       -> hThickIce
584       i0          -> i0swFrac
585       transCoef   -> bMeltCoef
586       frac_energy -> fracMelting
587      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
588       with default values (for now) that do not change the results.
589      remove old version of thsice vars advection in pkg/seaice.
590    o in FFIELDS.h:
591      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
592      - make pLoad & sIceLoad always available (but still only used if
593         ATMOSPHERIC_LOADING is #define).
594    o pkg/kpp: replaced _KPP_RL with _RL
595    o bug fixes for vertical diffusivity computations when both KPP and
596        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
597        are no longer updating the vertical diffusivity array
598        (passed as argument) but are (re-) setting those arrays.
599    o pkg/seaice: fix bug in evp solver, while doing that
600      - change (improve?) discretization of stress computations for both
601        cgrid-lsr and evp solver
602      - add a new routine to compute strain rates
603      - the above changes lab_sea results
604      - add no slip conditions for evp solver (off by default), lsr-version
605        may follow
606      - fix exchange for shear at Z-points (does not change lab_sea)
607      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
608        (to force the user to pick a time step since there is not "safe" way
609        of choosing it)
610      - add principal stress diagnostics
611      - rearrange fields for evp a little to avoid having to call a: too many
612        exchanges and b: exchanges for stress trensor components which we do
613        not have.
614      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
615        of evp, complete rewrite for lsr case (latter is does not yet work
616        in all cases)
617    o pkg/kpp: add code to have mixing in shelf ice caverns
618      - add myThid to all kpp routines (long overdue)
619    
620    checkpoint59
621    o pkg/exf:
622      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
623        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
624      - move exf header files from lower_case.h to UPPER_CASE.h ;
625        add missing cvs Header & Name
626      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
627      - add namelist param. selectStressGridPosition, exf_monFreq
628      - retire many _CLIM routines, and remove data.exf_clim
629        + params moved to data.exf
630        + climsst, climsss now handled by exf_set_gen, i.e.
631          climss?period=0 refers to constant field,
632          climss?period=-12 to monthly forcing
633      - split up namelists in data.exf
634    o pkg/seaice:
635      - remove seaice_exch and seaice_exch_uv
636      - remove superfluous exchange of theta
637      - add myThid to seaice_budget_ocean/ice
638      - add new interface for atmospheric wind forcing (C-grid only)
639        + new routine
640        + two new field (taux, tauy for stress over ice)
641        + removed one global field (DAIRN) for C-grid case only
642    o pkg/thsise
643      - 2nd set of modifs for thsice adjoint in conjunction with exf
644    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
645    
646    checkpoint58y_post
647    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
648      vertical diffusivity, similar to that in MOM4; turned on using
649      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
650      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
651    o Added capability for 3D specification of background vertical diffusion
652      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
653      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
654      "data" file that contains the 3D vertical diffusivity coefficients.
655    o ice dynamics (pkg/seaice) with thsice thermodynamics:
656      - add code within pkg thsice to advect & diffuse sea-ice fields
657      similar to (and will replace) what has been added in  seaice_advdiff.F,
658      but: - conserving Mass, Heat & Salt.
659           - better when using non-linear advection scheme (not yet fully tested)
660           - can also be used in atmospheric set-up (for now, only the diffusion).
661    
662    checkpoint58x_post
663    o IO option for global-file compact format:
664      - add options when generating topology (utils/exch2/matlab-topology-generator)
665      - add I/O capability (pkg/mdsio).
666      - adapt utils/matlab/rdmds.m to read this format.
667      for now long-line format not yet supported by pkg/mdsio (& exch2).
668    o shelfice: add a few diagnostics
669    
670    checkpoint58w_post
671    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
672      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
673      (and replace horiVertRatio in NH code).
674      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
675                         and tutorial_plume_on_slope (sensitive to truncation)
676    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
677      directly to drive seaice model (C-grid only)
678    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
679     - reintroduce computation of wind from stress,
680     - compute tau (in exf_bulkformulae.F) from windstress averaged to
681       mass points to avoid tau = 0
682     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
683    o rdmnc.m: make it work with "global" files created with gluemnc
684    o rdmnc.m : some improvements in dealing with singleton dimension
685      (tested on all testreport mnc output files).
686    o genmake2: disable pkg/profiles if netcdf test fails.
687    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
688    o move call to cal_readparms up to make calendar parameters/variable available
689      to all packages
690    
691    checkpoint58v_post
692    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
693      useDynP_inEos_Zc tested.
694    o pkg/exf: changes to properly interpolate/mask/scale initial fields
695    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
696      and portions thereof.  See read_cs.txt for description and examples.
697    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
698      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
699      following the great-circle arc between those 2 points.
700    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
701      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
702    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
703     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
704     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
705     - still needs work (not working with some options ; efficiency to improve)
706       and serious testing.
707     - use this scheme for temperature & salinity in 2 advection test exp.:
708       advect_xy & advect_xz, respectively.
709    
710    checkpoint58u_post
711    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
712    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
713    o testreport: add option "-skipdir" to skip some test.
714    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
715      momentum calculation.
716    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
717    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
718      remove checkpoint.F and the_correction_step.F (no longer used);
719      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
720    o add option (linFSConserveTr) to correct for tracer source/sink due to
721      Linear Free surface
722    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
723    o pkg/thsice: fix reading mnc-pickups
724    
725    checkpoint58t_post
726    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
727    o pkg/mdsio:
728     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
729       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
730       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
731     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
732     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
733       either MDS_READ_FIELD or MDS_WRITE_FIELD )
734     - new S/R (to replace MDSWRITEMETA), which allows to write more
735       informations (variable names, time ...) to meta files.
736     - modify rdmds.m to give back the meta file content.
737    o pkg/diagnostics: change vertical interpolation to be safer, and more
738       flexible (define p-levels to interpolate to in data.diagnostics);
739      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
740       diagnostic pointer.
741    o pkg/seaice: more cleaning up of seaice_growth, added many comments
742    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
743    o fix multi-category seaice:
744     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
745       SEAICE_MULTICATEGORY
746     - fix short wave heat flux
747    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
748       and allow to use EVP solver. Change forward lab_sea: test both EVP
749       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
750    o Initial check-in of lab_sea adjoint
751      (very similar to natl_box_adjoint/code_seaice)
752      * used C-grid and EVP solver
753      * used KPP, GM/Redi
754      * uses inAdExact=.TRUE.
755      * gradient checks fail for both ADM and TLM
756        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
757        f.d. gradients actually seem more problematic than ADM, TLM gradients;
758        issue is related to forward mismatch between g77 an ifort
759    o pkg/seaice: overhaul of thermodynamics
760     - growth.F and groatb.F are replaced by new routine seaice_growth.F
761     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
762     - move a few global fields out of SEAICE.h into seaice_growth.F and
763       make them 2D (FICE/QNETO/ ...)
764     - remove FO (it is the same as QNETO)
765     - introduce a few local fields to avoid modifying external fields such
766       as atemp, etc.
767    
768    checkpoint58s_post
769    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
770      changed exf_set_gen.F so that
771        genperiod=0 means input file is one time-constant field and
772        genperiod=-12 means input file contains 12 monthly means
773    o CG2D: use pre-computed solver main-diagonal (stored in common block);
774      this affects truncation error ; generate new output file for exp. which
775      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
776        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
777        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
778        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
779        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
780        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
781    o start implementation of deep-atmosphere and anelastic formulation
782    o verification: remove 2nd copy of input files and use script "prepare_run"
783      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
784    o mom_common/vecinv/fluxform: fix a few initialisation isssues
785    o profiles: fix for multithreaded case
786    
787    o diagnostics: rename few diags:
788      s/'PRESSURE'/'RCENTER '/g
789      s/'TICE    '/'oceFreez'/g
790      s/'TAUX    '/'oceTAUX '/g
791      s/'TAUY    '/'oceTAUY '/g
792      s/'SWFLUX  '/'oceQsw  '/g
793      s/DIFx/DFxE/g
794      s/DIFy/DFyE/g
795      and add few ocean-forcing diagnostics:
796      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
797    o modifications to pkg/seaice/growth.F and budget.F, which change results of
798      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
799      as actual snow thickness.  It now refers everywhere to effective snow
800      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
801    
802    checkpoint58r_post
803    o modifications to pkg/seaice/growth.F, which change results of
804      lab_sea experiment: fixes pertain to melting snow over open water, to
805      masking EVAP under sea ice, and to using the correct AREA variable for
806      computations of EVAP, PRECIP, HSNOW, and GHEFF
807    o add ability to read bathy, salt, and theta using MNC (off by def)
808    o add flooding algorithm and advection of HSNOW for pkg/seaice;
809      both are turned off by default and do no change any results
810    o seaice advection with pkg/thsice: a step toward the use of non-linear
811      advection scheme, but #ifdef or commented out for now (requires more EXCH).
812    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
813      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
814      in natl_box (affects results @ truncation level: update output.txt)
815    o multi-threading and IO:
816      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
817      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
818        (needed to work with SingleCpuIO): tested in all verif. exp.
819    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
820      affects the results (but none of the verification test uses this scheme).
821    o Adding some pkg/diagnostics capability to pkg/seaice
822      (will certainly be subject to changes)
823    o ctrl: adding new control variables:
824      lwflux, lwdown, evap, snowprecip, apressure, runoff
825    
826    checkpoint58q_post
827    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
828      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
829      high_res_cube configuration by 4% on Columbia.
830    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
831      add (in global_with_exf/code) a version of EXF_INTERP_READ without
832      dynamical allocation (seems to work in multi-threaded).
833    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
834      single CPU io) so that TAF does not have to see EESUPPORT.h
835    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
836    
837    checkpoint58p_post
838    o obcs: stop if obcs is used with useCDscheme = .true.
839    o shelfice:
840     - fix a sign error so that no slip at shelfice interface works
841     - remove stop for combination non-hydrostatic code and shelfice. That does
842       not mean, that the results are correct, but at least they are numerically
843       stable
844    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
845    o added adjoint exch routined for all exch*3d* routines
846      and updated flow directives
847    
848    checkpoint58o_post
849    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
850      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
851    o change controling S/R for writing pickup file (new S/R do_write_pickup)
852      and clean-up reading/writing of pickup files.
853    o fix local version of read/write pickup (NH part) in rotating_tank/code
854    o simplify EXCH interface:
855     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
856     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
857    o added the regrid package
858    o shelfice:
859     - add a simple boundary layer scheme to reduce noise
860     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
861    
862    checkpoint58n_post
863    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
864       local variable (not in common block).
865    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
866      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
867      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
868        to work with SingleCpuIO.
869    o add "_d 0" to real constant of pkg/cfc subroutines ;
870       update exp. cfc_exemple & tutorial_cfc_offline output files.
871    o multi-threading and IO:
872      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
873        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
874      - barrier before and after reading.
875      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
876      - avoid using MDS_WRITELOCAL for LAND pkg output.
877      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
878        common-block variables ; Allows multi-threading with master-thread IO.
879    o change default MAX_NO_THREADS from 32 to 4 ;
880      and stop cleanly when MAX_NO_THREADS is too small.
881    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
882    
883    checkpoint58m_post
884    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
885       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
886    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
887       keep global_ocean.90x40x15 (for AD testing) with former secondary test
888       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
889    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
890        add MITgcm_tutorials (= code + all the tutorials)
891    o ecco, option to compute cost for total ssh (mean+anom)
892    o consistent with addition of ptracer and ssh in pkg/profiles
893    o profiles: adding ptracer and ssh
894    o testreport: change multi-test output-file name
895      (from output.txt.{name} to output.{name}.txt)
896    o profiles: now ok for mutli-tiles case
897    o seaice: add 4 parameters for different advection schemes for area,
898      (effective) seaice thickness, enthalphy, and snow height. Their default
899      is the standard parameter SEAICEadvScheme
900    o calc_gw:
901     - add cosFacU in zonal viscous flux (harmonic.visc.).
902     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
903       of tutorial_plume_on_slope.
904    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
905    o calc_gw: true flux-form, account for horizontal grid spacing.
906      update rotating_tank results, but not plume_on_slope (affected at
907      truncation level, 11 digits).
908    
909    checkpoint58l_post
910    o calc_gw:
911     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
912     - remove side-drag for now (need to fix it); update plume_on_slope results.
913     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
914    o commit code to make SST/SSS weights spatially variable
915      (based on either variable in-situ or variable initial T/S weights)
916    o pkg/ecco:
917      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
918        now based on horizontally varying weights wthetaLev, wsaltLev
919      * cost_averagesflags now returns year indices in addition to day, month
920      * sflux balance is performed on annual basis
921        (sflxumm, sfluxmm2, bal_sfluxmm)
922      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
923        including separate counting and multipliers
924    o pkg/rbcs
925      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
926    
927    checkpoint58k_post
928    o testreport:
929     - always build in dir. "build" (if not there, mkdir build instead of building
930       & running in input)
931     - run in dir run (if it exists), in build otherwise.
932     - call prepare_run (if input/prepare_run exists)
933     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
934    o pkg/exf modifications to interpolation and rotation routines for more
935       reasonable treatment of North Pole singularity: for tracers North Pole
936       value is set to northernmost zonal-mean value, for zonal velocity it is
937       set to zero, and for meridional velocity it is set to northernmost value.
938    o pkg/exf/exf_check_range.F
939     - add tile index to diagnostics and move stop statement to the very
940       end of the routine.
941    o pkg/diagnostics: (diagnostics_main_init.F)
942      define title of isomorphic variables according to the current config.
943    o pkg/thsice with pkg/seaice dynamics:
944    - fix domain of computation (interior only, required for exf) and do exchanges
945    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
946    o towards a standard way of dealing with multi-threading in MONITOR
947      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
948    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
949       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
950    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
951    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
952    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
953       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
954  o tracer advection:  o tracer advection:
955   - clean-up and simplify calc_common_factors.F   - clean-up and simplify calc_common_factors.F
956   - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer   - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer

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