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revision 1.703 by gforget, Fri Jul 14 22:14:28 2006 UTC revision 1.975 by mlosch, Mon Apr 14 09:45:35 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 pkg/my82: add netcdf-support and diagnostics
8    o thsice pkg:
9      - Now hsMax limits snow heitght by turning it into ice following
10        flooding scheme (and now conserving energy)
11      - Slight rewriting of the formula in thsice_calc_thick.F
12      - Parameter rhowi eliminated to be replaced by floodFac = (rhosw-rhoi)/rhos
13        --> changes results of global_ocean.cs32x15.icedyn and global_ocean.cs32x15.thsice
14    
15    checkpoint59p
16    o gchem / dic / cfc :
17      - add useDIC, useCFC , read from "data.gchem" (& hold in GCHEM.h);
18      - add new parameter files: "data.dic" & "data.cfc" ;
19      - various re-arrangement in initialisation & header file ;
20      - fix tutorial_global_oce_biogeo for multi-threaded test.
21    o pkg/dic: test for "pickup_dic" file when restarting ;
22      if no pickup-file, can restart with a re-initialised pH (same as it did
23      before) providing pickupStrictlyMatch is set to False.
24    o change argument list of S/R PTRACERS_WRITE_PICKUP & MYPACKAGE_WRITE_PICKUP
25      + fix call to S/R GGL90_WRITE_PICKUP & DIC_WRITE_PICKUP
26    o add a "warning" (to Error msg file) when an Active Tracer is not using AB-2
27      and staggerTimeStep is off (needed for stability of Internal-wave dynamics).
28    o move out of PARAMS.h & data the last pieces of old-ptracer code: tauTr1ClimRelax,
29     & lambdaTr1ClimRelax ; put those 2 params in PTRACERS_PARAMS.h & data.ptracers
30       (note: not clear to me what lambdaTr1ClimRelax is still used for ...)
31    o pkg/mom_vecinv: - new parameter "selectVortScheme" to select which
32       scheme to use for vorticty-term ;
33     - compute upwindVorticity=T case within mom_vi_u/v_coriolis_c4.F
34       (with default selectVortScheme, return to original discretisation)
35     - remove weird combination (e.g.: upwindVorticity & highOrderVorticity)
36    o pkg/seaice: add a line to the summary to indicate grid type (B/C)
37    o in mom_calc_visc, fix average value of viscAh_W & viscA4_W next to the
38      bottom ; only used with variable horizontal viscosity and non-hydrostatic.
39      also fix diagnostics VISCAHW & VISCA4W.
40    
41    checkpoint59o
42    o dome/code/obcs_calc.F: avoid division by zero (detected using gfortran).
43    o change the loop ordering in most gad_*_adv_x.F to improve vectorization:
44      move a few statemens out the main loop into separate loops
45    o pkg/shelfice:
46      - sort out freshwater flux; convert freshwater fluxes to mass fluxes
47        (kg/m^2/s), does not break tests, because in verification/isomip,
48        rhoConstFresh=rhoConst (by accident)
49      - rearrange computation of tLoc, sLoc, pLoc to make code more efficient
50      - move S/R find_rho_scalar, pkg/ecco/sw_ptmp.F, pkg/ecco/sw_adtg.F into
51        new file model/src/seawater.F, so that they are available for all pkgs.
52      - convert potential temperature into in-situ temperature. This changes the
53        isomip tests => update tests
54    o add a flag writePickupAtEnd (default=true) to be able to suppress
55      writing a pickup at the last timestep
56    o tools/mpack-1.6 :
57      - disable automake (not working) and autoconf (not needed).
58      - update to version 1.6.4 which fix MD5 code on some 64 bits platforms
59        also cleaner with much less compilation warnings.
60    o pkg/profiles:
61      rename profiles_interp_mean_genericgrid as profiles_interp_mean_gg
62      (for "less than 32 characters name" compiler requirement)
63    o pkg/obcs and pkg/exf: added capability to specify seaice open boundary
64      conditions that have a different sampling frequency than S/T/U/V obcs
65    o pkg/diagnostics (stats-diags):
66      - fix global Min/Max in case 1 processor get only empty tiles
67    o genmake2: replace (4 times)
68         make genmake_tc_1.o >> genmake_warnings 2>&1
69      with
70         COMM="$CC $CFLAGS -c genmake_tc_1.c"
71         echo $COMM >> genmake_warnings
72         $COMM >> genmake_warnings 2>&1
73      to make genmake2 always see the value of CC as specified in the optfile.
74    o generic_advdiff: - prather advection scheme (SOM) coded for CS-grid.
75      - add diagnostics for 1srt & 2nd Order moments and sub-grid variance.
76      - modify verification advect_cs test to test SOM-advection on CS-grid.
77    o pkg/ctrl:
78      - Rewrite of ctrl_map_ini_ecco.F,
79        introducing a generic routine (ctrl_map_ini_gen.F).
80      - Modification of ctrl_bound/adctrl_bound handling control vector bounds.
81    
82    checkpoint59n
83    o pkg/diagnostics: for large number of diagnostics, store diagnostic mate
84      number in dedicate array "hdiag":
85      - new version of S/R DIAGNOSTICS_ADD2LIST : DIAGNOSTICS_ADDTOLIST
86        with 1 more argument (mate number); modify old version DIAGNOSTICS_ADD2LIST.
87      - many small changes (integer format) for large number of diagnostics
88      - start to use DIAGNOSTICS_ADDTOLIST (necessary for diagnostics with
89        a counter mate) in pkg diagnostics, ptracers, thsice & aim_v23.
90    o add parameter rotateGrid and Euler angles EulerPhi/Theta/Psi. For
91      usingSphericalGrid, this allows to define the rotated grid coordinates
92      via phiMin/thetaMin/dxSpacing/dySpacing, etc., but then re-compute the
93      geographical coordinates according to the inverse of the rotation defined
94      by the Euler angles, so that Coriolis parameter and online-interpolation by
95      exf works with the geographical coordinates on XC/YC/XG/YG.
96      Naturally, this feature does not work with all packages, so some
97      combinations are prohibited in config_summary (flt, flt_zonal, ecco,
98      profiles), because there the coordinates are assumed to be regular
99      spherical grid coordinates.
100    o pkg/gmredi,ctrl,ecco,autodiff,grdchk and model/src,inc:
101      - introduce isopycnal diffusion coefficient control.
102    o tools/adjoint_options:
103      - additional control vector components.
104    o pkg/mnc: have mnc create marginally meaning full coordinate variables
105      (that is the grid indices) if usingCurvilinearGrid and NOT EXCH2
106    o pkg/mypackage:
107      - add example of read/write pickup for state-var ;
108      - add entry points to the main code for state-vars diags & write-pickup.
109    o pkg/exf: rewrite of exf_getffieldrec.F to properly deal with year
110      transitions for useExfYearlyFields
111      - add new subroutine that determines the file to read from for
112        use*YearlyFields = .TRUE. and .FALSE.
113      - add a verification experiment to global_with_exf that tests
114        useExfYearlyFields with USE_EXF_INTERPOLATION defined
115    o pkg/obcs/exf: add useOBCSYearlyFields (=.FALSE.) to obcs with exf in
116      analogy to useExfYearlyFields; rearrange obcs_prescribe_read: two new
117      subroutines (which could be generated from a template, because they are
118      almost identical), for now they are included in obcs_prescribe_read.F for
119      simplicity
120    o pkg/exf:
121      - add a little more diagnostic to exf_interp_read (in analogy to
122        mds_read_field, can be turned off with debugLevel < debugLevA=1)
123      - improve vectorizability of exf_interp for TARGET_NEC_SX, makes code
124        ugly but fast by unrolling short inner loops, inserting a unroll=8
125        directive in routine lagran, and splitting a loop and making do while the
126        outermost loop (the latter requires the intoduction of index arrays)
127    o pkg/obcs: replace obcs_apply_area/heff/hsalt/hsnow with obcs_apply_seaice
128    o pkg/seaice: moved DIFFERENT_MULTIPLE from seaice_model to seaice_dynsolver
129      http://forge.csail.mit.edu/pipermail/mitgcm-devel/2008-January/003173.html
130    o verification/seaice_obcs: updated for restart test and latest options
131    o pkg/seaice: add a new flag SEAICEuseTEM to use a slightly different
132      ice rheology (so-called truncated ellipse, that gets rid of tensile stress);
133      for now this is only available for the C-grid code and also within
134      #ifdef SEAICE_ALLOW_TEM, because this option may slow down the EVP code
135    
136    checkpoint59m
137    o pkg/seaice: use different time constant for melting (SEAICE_gamma_t)
138      and freezing (SEAICE_gamma_t_frz) ice due to mixed layer temperature
139    o gad_som : fix flux output (& diagnostics) to have same units as other  
140      advection scheme fluxes (was previously multiplied by deltaT).  
141    o added verification/seaice_obcs both to test seaice open boundaries
142      and to provide an example matlab scrpt for generating them
143    o added verification/lab_sea/input.salt_plume for testing pkg/salt_plume
144    o pkg/salt_plume: clean up salt_plume_frac.F to
145      remove redundancy in PlumeMethod 1 and 4
146    o pkg/kpp: added saltplume diagnostics
147    o pkg/obcs and pkg/seaice:
148      - do not set uice and vice to zero when OB*icefile are unspecified
149      - OBCS_SEAICE_AVOID_CONVERGENCE is undefined by default
150      - moved seaice tracer obcs after call to seaice_growth
151    o pkg/salt_plume: added various options for salt plume depth
152      criterion and for vertical distribution of the salt
153    
154    checkpoint59l
155    o pkg/ptracers: new version of ptracers pickup:
156      read meta file and write only fields which are needed to restart.
157      ( same logic as main pickup file ; also using pickupStrictlyMatch )
158    o pkg/seaice:
159      - add timescale for melting due to warm mixed layer as a means of
160        setting SEAICE_availHeatFrac more conveniently
161      - add a CPP-flag/runtime parameter check for flooding algorithm
162      - reformulated availHeat in seaice_growth.F to be independent of AREA
163    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
164      unit changes
165    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
166    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
167      SX vector computer.
168    o pkg/seaice:
169      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
170        seaice forcing fields can now be read only through pkg/exf
171      - removed some unused halos
172    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
173    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
174      or U/VICE from U/VWIND before computing U/VSTRESS
175    
176    checkpoint59k
177    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
178      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
179    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
180      all experiments pass when compile with un-initialised var. checking option.
181    o added pkg/salt_plume
182    o script to test restart (for now, in MITgcm_contrib/jmc_script)
183    o pkg/seaice: new read/write pickup version.
184      read meta file and write only fields which are needed to restart.
185      ( same logic as main pickup file ; also using pickupStrictlyMatch )
186    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
187    o lab_sea.hb87: modify the domain & update output.hb87.txt :
188      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
189      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
190      process. Fixed here by closing the domain at the Northern boundary.
191    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
192    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
193      a set of consecutive levels in/from a 3-D array.
194    o pkg/ptracers:
195      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
196      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
197    
198    checkpoint59j
199    o in pkgs: dic, obcs, offline, rbcs:
200      standard way to compute coeff. for time interpolation between 2 time reccords
201      which retains full precision (& make results less dependent on compiler).
202      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
203    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
204      packages instead of reading ice cover and wind speed separately
205    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
206     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
207      to allow to compile customized code before the update)
208    o cleaning-up:
209      - fix CPP instruction syntax in pkg/obcs
210      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
211        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
212      - fix some threads issue in IO parts.
213    o pkg/dic:
214      - add tons of "_d 0" (--> much better testreports !)
215       and then update outputs of tutorial_global_oce_biogeo
216    o pkg/mom_fluxform:
217      add a special version of momentum advection intended to conserve momentum
218      next to a bathymetry step or a coastline edge. (default = off = #undef)
219    o new read/write pickup version:
220      - for now, only implemented for main (mdsio) pickup file.
221      - write out only what is needed to restart; merge pickup_nh , pickup_ph
222        and main pickup together.
223      - read meta file; read only what is needed to restart; stop if a field
224        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
225        if it make sense (even if the restart is not perfect).
226      - if no meta file, assume that pickup to read corresponds exactly to
227        a pickup that would currently be written.
228      - read pickup written in the old format (until checkpoint59i) if it
229        recognizes an old meta file (no field-list).
230      - add a meta file in exp. which starts from a pickup: 2 cases:
231        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
232         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
233        b) a meta file describing the content of the associated pickup file
234         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
235    o pkg/mdsio & pkg/rw:
236      - new routine to read a meta file ; new set of routine to read
237        Multiple-fields file (with meta file).
238    o added open boundary conditions capability for seaice
239        HSNOW, HSALT, UICE, and VICE
240    
241    checkpoint59i
242    o adjoint:
243      * fix multiDimAdvection adjoint
244        (partial recomputation problem by TAF for fVerT(:,:,kDown)
245        and comlev1 size definition (maxpass vs. max. number of tracers)
246      * verification/global_ocean.90x45x15 adjoint now tests
247        NLFS and multiDimAdvection using DST3 (=30)
248      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
249    o pkg/kpp: add "_d 0" to real constant (if missing);
250      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
251      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
252    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
253      for internal parameters related to restart process (formerly from PARAMS.h)
254      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
255    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
256      as argument. (only atm2d & obcs write_pickup have not yet been updated)
257    o pkg/monitor:
258      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
259      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
260      - account for deep Atmosphere factor and density factor (anelastic)
261    o added open boundary conditions capability for seaice HEFF and AREA
262    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
263      thermodynamics
264      - requires a little reorganization, which affects the testreport results
265        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
266        so that now the conservative form is tested
267      - add a few comments
268    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
269    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
270    o add new diagnostics to seaice: advective, diffusive fluxes (only for
271      multidim-advection, for scheme 2 they are not filled) and transports,
272      thermodynamic growth rates
273    o change units of EmPmR (inside the code, + within coupling interface)
274      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
275      Affects results @ truncation level (cg2d match) and update output of
276       experiments: lab_sea(6), global_ocean.90x40x15(10),
277      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
278      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
279      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
280      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
281    
282    checkpoint59h
283    o pkg/exf:
284      - improve vectorization by moving if-statement out of loops in
285        exf_mapfields, exf_radiation
286      - exf_bulkformulae.F: introduce 2D fields and vectorize code
287    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
288    o testreport:
289      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
290        monitor & update offline_exf_seaice exp. output.
291      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
292    o pkg/seaice:
293      - bug fix in the evp solver: boundary conditions were affected be
294        masking of zMax/zMin (changes results)
295      - minor bug fix in boundary conditions in seaice_calc_strainrates
296        (changes results for no_slip)
297      - seaice_lsr.F: make interpolation of eta dependent on boundaries
298      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
299      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
300        stress formulation and no-slip boundary conditions
301    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
302      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
303    o pkg/seaice: a first HSALT time stepping equation has been checked in
304    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
305      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
306      without requiring DO-IF statements
307    o pkg/thsice:
308      use continuous power-law function for partition of energy between lateral
309      melting/freezing and thinning/thickening ; old code using step function
310      still available with #undef THSICE_FRACEN_POWERLAW
311      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
312    o testreport: change AD testing : check against results/output_adm.txt
313      using same scripts as for forward test.
314    
315    checkpoint59g
316    o adjoint testing: in preparation for changing testreport:
317      - output format: cost and grad written on separated lines
318      - ad output results in directory "results" (instead of "results_ad")
319    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
320    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
321    o pkg/ecco: allow user defined cost function contributions
322    o testreport:
323      Allow to choose (per experiment) the list of tested output variables
324       and the main variable (used to issue a pass/FAIL ) ;
325      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
326      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
327      Also modify printing of summary:
328       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
329       b) echo the list of tested variables in the individual summary.txt of
330          each experiment.
331    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
332      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
333      (but still depend on the tile decompostion of the domain).
334    o pkg/seaice: change a discretization detail to make the B-grid code
335      "more symmetric". This change is likely to remove all "ridges/leads" that
336      where quasi-aligned with the grid in B-grid solutions. It may also be
337      the solution to the stress coupling issues with the B-grid.
338    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
339      remove .cvsignore from input dir. (since testreport no longer run here).
340    o pkg/thsice:
341     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
342     - fix reshaping of sea-ice just after advection:
343       melt all the ice only if ice-volume is too small.
344     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
345       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
346     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
347    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
348      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
349    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
350      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
351      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
352      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
353      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
354      -> update output.txt
355    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
356     this affects truncation error: -> update output.txt of exp:
357      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
358      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
359    
360    checkpoint59f
361    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
362    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
363      a bounded range (in forward mode)
364    o pkg/ecco, ctrl, autodiff and mom_common:
365     internal parameter controls, completements of implementations
366    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
367    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
368      (not seem any difference in testing results).
369    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
370       at face corners.
371    o pkg/generic_advdiff:
372     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
373      loop range indices for computing vertical advection tendency
374      and do the calculation in the interior only (no overlap) ;
375      for now, only implemented for SOM advection (to save CPU time).
376     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
377    o exch2 adjoint
378      First set of changes:
379      - add exch2 hand-written adjoint templates
380      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
381        This will require cleanup in pkg/autodiff/*.F
382        (changed routines currently kept separate in verif. code/)
383      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
384        that used to hide exch2 or cubed-sphere specific code
385        (commented via 'cph-exch2')
386    o pkg/seaice
387      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
388    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
389       output of global_ocean.cs32x15.thsice .
390    
391    checkpoint59e
392    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
393      for B-grid vector (not yet tested) and C-grid vector (<- only used
394      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
395    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
396      (#ifdef ALLOW_SALT_PLUME)
397    o gather_2d/scatter_2d: removed halo regions
398    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
399      scheme and the corresponding test case (under front_relax dir). For now,
400      only available with Skew-flux form and not yet tested in realistic set-up.
401      adjoint: store directives updated, but gradient checks deteriorated,
402      so maybe GM/Redi adjoint is now broken.
403    o seaice adjoint
404      * add AREA, HEFF, HSNOW as control variable
405        (should not change lab_sea results)
406      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
407    o pkg/seaice:
408      * added computation of saltFlux in seaice_growth;
409        For time being, sea ice salinity is assumed constant
410        contribution of snow flooding to freshening of sea ice is neglected.
411        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
412        defaults to 0.0 in order to maintain backward compatibility.
413        Typical values for SEAICE_salinity are 4 to 10 g/kg.
414      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
415      * added SEAICE_availHeatFrac, which specifies fraction of surface level
416        heat content used to melt or grow ice
417      * commented out cap of HICE: it helps keep ice thinner
418      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
419      * applied OBCS T/S mask to HEFFM sea ice mask
420    
421    checkpoint59d
422    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
423     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
424     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
425    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
426     and change default value of parameter "GM_Small_Number";
427     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
428       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
429       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
430    o pkg/ecco: cost function when applying pkg/smooth to controls
431    o pkg/ctrl: add forcingPrecond run time parameter
432    o pkg/seaice:
433     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
434     - fix bug in metric terms of u-equation in LSR solver (implicit part),
435       changes verification/lab_sea
436     - rearrange implicit part of u-equation in LSR solver to make it easier to
437       read, understand, and debug. This causes changes at the truncation level.
438     - fix (serious) bug in the boundary conditions (sign error in the implicit
439       part) of the LSR solver. Changes all LSR results.
440     - fixed problem with HSNOW initialization to avoid thick snow when AREA
441       is initilized with small values - does not change lab_sea results.
442     - added HsnowFile initialization capability
443    o pkg/smooth: addition to model/src and pkg/ctrl so allow
444     initialization of pkg/smooth and application to control vector
445    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
446    o dependencies: pkg/profiles requires pkg/cal
447    o pkg/profiles:
448     - added option ALLOW_PROFILES_GENERICGRID
449         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
450         that interpolation information (grid points and coefficients) is provided
451         within the netcdf input files.
452         -> sample matlab scripts can be found in MITgcm_contrib/gael
453         that allow you to prepare netcdf input files.
454     - also modified: cleaner include statements, cleaner error print statements,
455       cleaner stops when error, and more tests of the netcdf input files consistency.
456    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
457    o pkg/seaice:
458     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
459       requires a new routine: seaice_diagnostics_fill.F
460     - make sure that seaice does not move if not forced (pressure replacement
461       method, Hibler and Ip, 1995), changes results
462     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
463     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
464       It is turned off by default (=-1.), because it changes the results.
465     - make it possible to read AREA from a file, too.
466    
467    checkpoint59c
468    o add S/R and diagnostics for oceanic mixed-layer depth
469    o move GMRedi call after all vertical mixing schemes (including KPP)
470    o pkg/thsice:
471     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
472      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
473    o pkg/obcs:
474     - bug fix for balance code
475    o pkg/seaice:
476      - allow values of SEAICE_elasticParm > 1
477      - add new parameter SEAICE_evpTauRelax as an alternative
478        to SEAICE_elasticParm
479      - make lsr boundary conditions free slip (by default), changes result
480      - add code for no slip boundary conditions for lsr
481      - set minimum of zeta to zero (and not 4e8) (changes results)
482      - add a cap on AREA after advecting AREA if seaice_growth is not called
483    o change calculation of Visbeck K:
484      - no longer depend on tapering scheme; instead, compute slope (limited
485        by GM_maxSlope). this is equivalent to what was comuted before with
486        clipping or linear tappering.
487      - fix vertical averaging (wrong by 1/2 level)
488      - leave the old version (but will not be maintained) within
489        #ifdef OLD_VISBECK_CALC / #endif
490      - update output of exp. ideal_2D_oce
491    o change error catch in calc_r_star to improve vectorization
492    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
493      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
494    o adjoint:
495      Re-organized adjoint checkpointing according to Matt Mazloff
496      (but with modifs/completions/cleanups)
497      Storing is now bundled into large arrays to optimized I/O
498      (and second step in cleanup of the_main_loop)
499    
500    checkpoint59b
501    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
502      - export/import (between ocean & coupler) fields needed for ocean DIC.
503    o pkg/seaice:
504      - get rid of three more exchanges seaice_calc_viscosities (required
505        different loop boundaries in seaice_lsr and seaice_ocean_stress)
506      - bug fix in seaice_ocean_stress (update of lab_sea required)
507      - reduce loop boundaries to necessary minimum also in seaice_evp
508      - go back to the old way of computing deltaC/Z as the adjoint likes that
509        better
510    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
511      passive tracer to an Age Tracer) + update output.txt
512    o pkg/exf:
513      - implement A-grid / C-grid selection for wind-stress input files.
514      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
515      for now, in exf_bulk_largeyeager04.F only :
516      - change implementation for case where windspeed + 2. components wind-stress
517        are read-in. AND use rhoConstFresh to convert evap.
518    o pkg/seaice:
519      - use correct EXCH_UV for wind-forcing (on A-grid).
520      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
521        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
522    o pkg/exf:
523      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
524      EXF_INTERPOLATION:
525      - merge global_with_exf/code version of exf_interp_read.F
526        to the main code ;
527      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
528        reading the file ; Important: This options needs to be defined to recover
529        previous code.
530        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
531      - no longer loose real*8 precision along the way when using exf_iprec=64.
532    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
533      - change discretisation of evp-solver in order to avoid another exchange
534        (changes lab_sea) and clean up a little
535      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
536        help the adjoint (this also changes the results slightly)
537      - add a few "_d 0" where they had been missing in seaice_evp.F
538      - cleaning up: remove unused seaice_calc_rhs.F
539    o pkg/exf: some cleaning-up:
540      - change various "constants" into runtime parameters
541      - cleaned-up Large&Yeager04 routine which should eventually
542        replace exf_bulkformulae.F (changed names of S/R and CPP)
543        and merged various ALLOW_ATM_WIND options
544     only used with thsice pkg (in thsice_get_exf.F):
545      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
546        which are used when useStabilityFct_overIce=TRUE (= the default)
547      - change default values of ice & snow emissivity and scale downward LW
548        by ice & snow emissivity.
549    o pkg/thsice:
550     fix few little problems, in thsice_calc_thickn.F:
551      - growth vertically (and not laterally) if iceFrac == iceMaskMax
552      - melt only laterally if hIce < hThinIce (as the comments say)
553      and in thsice_extend.F:
554      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
555      - start to form ice as soon as the minimum ice-volume is reachable.
556     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
557      and cpl_aim+ocn
558    o pkg/kpp
559     - move computation of surface related input fields to KPP into a new
560       subroutine kpp_forcing_surf.F
561     - remove wrong (within bi,bj loops) EXCH calls.
562     - little cleaning (add argument myThid in last position, cvs header ...)
563     - for now, fix conservation problem by exchanging KPPviscAz (may not
564       be the best fix)
565    o pkg/seaice
566     - check for inconsistent evp parameter/cpp-flag combination
567     - remove leftover errIO flat for obsolete name list error handling
568    o OpenAD
569     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
570    
571    checkpoint59a
572    o pkg/seaice: some parameter clarifications and a little bit of clean up
573    o pkg/thsice: rename run-time parameters:
574       himin       -> hIceMin
575       himin0      -> hThinIce
576       hihig       -> hThickIce
577       i0          -> i0swFrac
578       transCoef   -> bMeltCoef
579       frac_energy -> fracMelting
580      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
581       with default values (for now) that do not change the results.
582      remove old version of thsice vars advection in pkg/seaice.
583    o in FFIELDS.h:
584      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
585      - make pLoad & sIceLoad always available (but still only used if
586         ATMOSPHERIC_LOADING is #define).
587    o pkg/kpp: replaced _KPP_RL with _RL
588    o bug fixes for vertical diffusivity computations when both KPP and
589        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
590        are no longer updating the vertical diffusivity array
591        (passed as argument) but are (re-) setting those arrays.
592    o pkg/seaice: fix bug in evp solver, while doing that
593      - change (improve?) discretization of stress computations for both
594        cgrid-lsr and evp solver
595      - add a new routine to compute strain rates
596      - the above changes lab_sea results
597      - add no slip conditions for evp solver (off by default), lsr-version
598        may follow
599      - fix exchange for shear at Z-points (does not change lab_sea)
600      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
601        (to force the user to pick a time step since there is not "safe" way
602        of choosing it)
603      - add principal stress diagnostics
604      - rearrange fields for evp a little to avoid having to call a: too many
605        exchanges and b: exchanges for stress trensor components which we do
606        not have.
607      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
608        of evp, complete rewrite for lsr case (latter is does not yet work
609        in all cases)
610    o pkg/kpp: add code to have mixing in shelf ice caverns
611      - add myThid to all kpp routines (long overdue)
612    
613    checkpoint59
614    o pkg/exf:
615      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
616        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
617      - move exf header files from lower_case.h to UPPER_CASE.h ;
618        add missing cvs Header & Name
619      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
620      - add namelist param. selectStressGridPosition, exf_monFreq
621      - retire many _CLIM routines, and remove data.exf_clim
622        + params moved to data.exf
623        + climsst, climsss now handled by exf_set_gen, i.e.
624          climss?period=0 refers to constant field,
625          climss?period=-12 to monthly forcing
626      - split up namelists in data.exf
627    o pkg/seaice:
628      - remove seaice_exch and seaice_exch_uv
629      - remove superfluous exchange of theta
630      - add myThid to seaice_budget_ocean/ice
631      - add new interface for atmospheric wind forcing (C-grid only)
632        + new routine
633        + two new field (taux, tauy for stress over ice)
634        + removed one global field (DAIRN) for C-grid case only
635    o pkg/thsise
636      - 2nd set of modifs for thsice adjoint in conjunction with exf
637    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
638    
639    checkpoint58y_post
640    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
641      vertical diffusivity, similar to that in MOM4; turned on using
642      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
643      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
644    o Added capability for 3D specification of background vertical diffusion
645      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
646      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
647      "data" file that contains the 3D vertical diffusivity coefficients.
648    o ice dynamics (pkg/seaice) with thsice thermodynamics:
649      - add code within pkg thsice to advect & diffuse sea-ice fields
650      similar to (and will replace) what has been added in  seaice_advdiff.F,
651      but: - conserving Mass, Heat & Salt.
652           - better when using non-linear advection scheme (not yet fully tested)
653           - can also be used in atmospheric set-up (for now, only the diffusion).
654    
655    checkpoint58x_post
656    o IO option for global-file compact format:
657      - add options when generating topology (utils/exch2/matlab-topology-generator)
658      - add I/O capability (pkg/mdsio).
659      - adapt utils/matlab/rdmds.m to read this format.
660      for now long-line format not yet supported by pkg/mdsio (& exch2).
661    o shelfice: add a few diagnostics
662    
663    checkpoint58w_post
664    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
665      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
666      (and replace horiVertRatio in NH code).
667      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
668                         and tutorial_plume_on_slope (sensitive to truncation)
669    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
670      directly to drive seaice model (C-grid only)
671    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
672     - reintroduce computation of wind from stress,
673     - compute tau (in exf_bulkformulae.F) from windstress averaged to
674       mass points to avoid tau = 0
675     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
676    o rdmnc.m: make it work with "global" files created with gluemnc
677    o rdmnc.m : some improvements in dealing with singleton dimension
678      (tested on all testreport mnc output files).
679    o genmake2: disable pkg/profiles if netcdf test fails.
680    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
681    o move call to cal_readparms up to make calendar parameters/variable available
682      to all packages
683    
684    checkpoint58v_post
685    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
686      useDynP_inEos_Zc tested.
687    o pkg/exf: changes to properly interpolate/mask/scale initial fields
688    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
689      and portions thereof.  See read_cs.txt for description and examples.
690    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
691      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
692      following the great-circle arc between those 2 points.
693    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
694      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
695    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
696     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
697     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
698     - still needs work (not working with some options ; efficiency to improve)
699       and serious testing.
700     - use this scheme for temperature & salinity in 2 advection test exp.:
701       advect_xy & advect_xz, respectively.
702    
703    checkpoint58u_post
704    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
705    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
706    o testreport: add option "-skipdir" to skip some test.
707    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
708      momentum calculation.
709    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
710    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
711      remove checkpoint.F and the_correction_step.F (no longer used);
712      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
713    o add option (linFSConserveTr) to correct for tracer source/sink due to
714      Linear Free surface
715    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
716    o pkg/thsice: fix reading mnc-pickups
717    
718    checkpoint58t_post
719    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
720    o pkg/mdsio:
721     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
722       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
723       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
724     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
725     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
726       either MDS_READ_FIELD or MDS_WRITE_FIELD )
727     - new S/R (to replace MDSWRITEMETA), which allows to write more
728       informations (variable names, time ...) to meta files.
729     - modify rdmds.m to give back the meta file content.
730    o pkg/diagnostics: change vertical interpolation to be safer, and more
731       flexible (define p-levels to interpolate to in data.diagnostics);
732      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
733       diagnostic pointer.
734    o pkg/seaice: more cleaning up of seaice_growth, added many comments
735    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
736    o fix multi-category seaice:
737     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
738       SEAICE_MULTICATEGORY
739     - fix short wave heat flux
740    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
741       and allow to use EVP solver. Change forward lab_sea: test both EVP
742       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
743    o Initial check-in of lab_sea adjoint
744      (very similar to natl_box_adjoint/code_seaice)
745      * used C-grid and EVP solver
746      * used KPP, GM/Redi
747      * uses inAdExact=.TRUE.
748      * gradient checks fail for both ADM and TLM
749        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
750        f.d. gradients actually seem more problematic than ADM, TLM gradients;
751        issue is related to forward mismatch between g77 an ifort
752    o pkg/seaice: overhaul of thermodynamics
753     - growth.F and groatb.F are replaced by new routine seaice_growth.F
754     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
755     - move a few global fields out of SEAICE.h into seaice_growth.F and
756       make them 2D (FICE/QNETO/ ...)
757     - remove FO (it is the same as QNETO)
758     - introduce a few local fields to avoid modifying external fields such
759       as atemp, etc.
760    
761    checkpoint58s_post
762    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
763      changed exf_set_gen.F so that
764        genperiod=0 means input file is one time-constant field and
765        genperiod=-12 means input file contains 12 monthly means
766    o CG2D: use pre-computed solver main-diagonal (stored in common block);
767      this affects truncation error ; generate new output file for exp. which
768      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
769        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
770        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
771        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
772        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
773        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
774    o start implementation of deep-atmosphere and anelastic formulation
775    o verification: remove 2nd copy of input files and use script "prepare_run"
776      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
777    o mom_common/vecinv/fluxform: fix a few initialisation isssues
778    o profiles: fix for multithreaded case
779    
780    o diagnostics: rename few diags:
781      s/'PRESSURE'/'RCENTER '/g
782      s/'TICE    '/'oceFreez'/g
783      s/'TAUX    '/'oceTAUX '/g
784      s/'TAUY    '/'oceTAUY '/g
785      s/'SWFLUX  '/'oceQsw  '/g
786      s/DIFx/DFxE/g
787      s/DIFy/DFyE/g
788      and add few ocean-forcing diagnostics:
789      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
790    o modifications to pkg/seaice/growth.F and budget.F, which change results of
791      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
792      as actual snow thickness.  It now refers everywhere to effective snow
793      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
794    
795    checkpoint58r_post
796    o modifications to pkg/seaice/growth.F, which change results of
797      lab_sea experiment: fixes pertain to melting snow over open water, to
798      masking EVAP under sea ice, and to using the correct AREA variable for
799      computations of EVAP, PRECIP, HSNOW, and GHEFF
800    o add ability to read bathy, salt, and theta using MNC (off by def)
801    o add flooding algorithm and advection of HSNOW for pkg/seaice;
802      both are turned off by default and do no change any results
803    o seaice advection with pkg/thsice: a step toward the use of non-linear
804      advection scheme, but #ifdef or commented out for now (requires more EXCH).
805    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
806      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
807      in natl_box (affects results @ truncation level: update output.txt)
808    o multi-threading and IO:
809      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
810      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
811        (needed to work with SingleCpuIO): tested in all verif. exp.
812    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
813      affects the results (but none of the verification test uses this scheme).
814    o Adding some pkg/diagnostics capability to pkg/seaice
815      (will certainly be subject to changes)
816    o ctrl: adding new control variables:
817      lwflux, lwdown, evap, snowprecip, apressure, runoff
818    
819    checkpoint58q_post
820    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
821      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
822      high_res_cube configuration by 4% on Columbia.
823    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
824      add (in global_with_exf/code) a version of EXF_INTERP_READ without
825      dynamical allocation (seems to work in multi-threaded).
826    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
827      single CPU io) so that TAF does not have to see EESUPPORT.h
828    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
829    
830    checkpoint58p_post
831    o obcs: stop if obcs is used with useCDscheme = .true.
832    o shelfice:
833     - fix a sign error so that no slip at shelfice interface works
834     - remove stop for combination non-hydrostatic code and shelfice. That does
835       not mean, that the results are correct, but at least they are numerically
836       stable
837    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
838    o added adjoint exch routined for all exch*3d* routines
839      and updated flow directives
840    
841    checkpoint58o_post
842    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
843      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
844    o change controling S/R for writing pickup file (new S/R do_write_pickup)
845      and clean-up reading/writing of pickup files.
846    o fix local version of read/write pickup (NH part) in rotating_tank/code
847    o simplify EXCH interface:
848     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
849     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
850    o added the regrid package
851    o shelfice:
852     - add a simple boundary layer scheme to reduce noise
853     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
854    
855    checkpoint58n_post
856    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
857       local variable (not in common block).
858    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
859      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
860      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
861        to work with SingleCpuIO.
862    o add "_d 0" to real constant of pkg/cfc subroutines ;
863       update exp. cfc_exemple & tutorial_cfc_offline output files.
864    o multi-threading and IO:
865      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
866        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
867      - barrier before and after reading.
868      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
869      - avoid using MDS_WRITELOCAL for LAND pkg output.
870      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
871        common-block variables ; Allows multi-threading with master-thread IO.
872    o change default MAX_NO_THREADS from 32 to 4 ;
873      and stop cleanly when MAX_NO_THREADS is too small.
874    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
875    
876    checkpoint58m_post
877    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
878       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
879    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
880       keep global_ocean.90x40x15 (for AD testing) with former secondary test
881       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
882    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
883        add MITgcm_tutorials (= code + all the tutorials)
884    o ecco, option to compute cost for total ssh (mean+anom)
885    o consistent with addition of ptracer and ssh in pkg/profiles
886  o profiles: adding ptracer and ssh  o profiles: adding ptracer and ssh
887  o testreport: change multi-test output-file name  o testreport: change multi-test output-file name
888    (from output.txt.{name} to output.{name}.txt)    (from output.txt.{name} to output.{name}.txt)
889  o profiles: now ok for mutli-threaded case  o profiles: now ok for mutli-tiles case
890  o seaice: add 4 parameters for different advection schemes for area,  o seaice: add 4 parameters for different advection schemes for area,
891    (effective) seaice thickness, enthalphy, and snow height. Their default    (effective) seaice thickness, enthalphy, and snow height. Their default
892    is the standard parameter SEAICEadvScheme    is the standard parameter SEAICEadvScheme

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