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revision 1.770 by jmc, Thu Feb 8 00:12:37 2007 UTC revision 1.964 by mlosch, Fri Feb 29 01:31:34 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 change the loop ordering in most gad_*_adv_x.F to improve vectorization:
8      move a few statemens out the main loop into separate loops
9    o pkg/shelfice:
10      - sort out freshwater flux; convert freshwater fluxes to mass fluxes
11        (kg/m^2/s), does not break tests, because in verification/isomip,
12        rhoConstFresh=rhoConst (by accident)
13      - rearrange computation of tLoc, sLoc, pLoc to make code more efficient
14      - move S/R find_rho_scalar, pkg/ecco/sw_ptmp.F, pkg/ecco/sw_adtg.F into
15        new file model/src/seawater.F, so that they are available for all pkgs.
16      - convert potential temperature into in-situ temperature. This changes the
17        isomip tests => update tests
18    o add a flag writePickupAtEnd (default=true) to be able to suppress
19      writing a pickup at the last timestep
20    o pkg/profiles:
21      rename profiles_interp_mean_genericgrid as profiles_interp_mean_gg
22      (for "less than 32 characters name" compiler requirement)
23    o pkg/obcs and pkg/exf: added capability to specify seaice open boundary
24      conditions that have a different sampling frequency than S/T/U/V obcs
25    o pkg/diagnostics (stats-diags):
26      - fix global Min/Max in case 1 processor get only empty tiles
27    o genmake2: replace (4 times)
28         make genmake_tc_1.o >> genmake_warnings 2>&1
29      with
30         COMM="$CC $CFLAGS -c genmake_tc_1.c"
31         echo $COMM >> genmake_warnings
32         $COMM >> genmake_warnings 2>&1
33      to make genmake2 always see the value of CC as specified in the optfile.
34    o generic_advdiff: - prather advection scheme (SOM) coded for CS-grid.
35      - add diagnostics for 1srt & 2nd Order moments and sub-grid variance.
36      - modify verification advect_cs test to test SOM-advection on CS-grid.
37    o pkg/ctrl:
38      - Rewrite of ctrl_map_ini_ecco.F,
39        introducing a generic routine (ctrl_map_ini_gen.F).
40      - Modification of ctrl_bound/adctrl_bound handling control vector bounds.
41    
42    checkpoint59n
43    o pkg/diagnostics: for large number of diagnostics, store diagnostic mate
44      number in dedicate array "hdiag":
45      - new version of S/R DIAGNOSTICS_ADD2LIST : DIAGNOSTICS_ADDTOLIST
46        with 1 more argument (mate number); modify old version DIAGNOSTICS_ADD2LIST.
47      - many small changes (integer format) for large number of diagnostics
48      - start to use DIAGNOSTICS_ADDTOLIST (necessary for diagnostics with
49        a counter mate) in pkg diagnostics, ptracers, thsice & aim_v23.
50    o add parameter rotateGrid and Euler angles EulerPhi/Theta/Psi. For
51      usingSphericalGrid, this allows to define the rotated grid coordinates
52      via phiMin/thetaMin/dxSpacing/dySpacing, etc., but then re-compute the
53      geographical coordinates according to the inverse of the rotation defined
54      by the Euler angles, so that Coriolis parameter and online-interpolation by
55      exf works with the geographical coordinates on XC/YC/XG/YG.
56      Naturally, this feature does not work with all packages, so some
57      combinations are prohibited in config_summary (flt, flt_zonal, ecco,
58      profiles), because there the coordinates are assumed to be regular
59      spherical grid coordinates.
60    o pkg/gmredi,ctrl,ecco,autodiff,grdchk and model/src,inc:
61      - introduce isopycnal diffusion coefficient control.
62    o tools/adjoint_options:
63      - additional control vector components.
64    o pkg/mnc: have mnc create marginally meaning full coordinate variables
65      (that is the grid indices) if usingCurvilinearGrid and NOT EXCH2
66    o pkg/mypackage:
67      - add example of read/write pickup for state-var ;
68      - add entry points to the main code for state-vars diags & write-pickup.
69    o pkg/exf: rewrite of exf_getffieldrec.F to properly deal with year
70      transitions for useExfYearlyFields
71      - add new subroutine that determines the file to read from for
72        use*YearlyFields = .TRUE. and .FALSE.
73      - add a verification experiment to global_with_exf that tests
74        useExfYearlyFields with USE_EXF_INTERPOLATION defined
75    o pkg/obcs/exf: add useOBCSYearlyFields (=.FALSE.) to obcs with exf in
76      analogy to useExfYearlyFields; rearrange obcs_prescribe_read: two new
77      subroutines (which could be generated from a template, because they are
78      almost identical), for now they are included in obcs_prescribe_read.F for
79      simplicity
80    o pkg/exf:
81      - add a little more diagnostic to exf_interp_read (in analogy to
82        mds_read_field, can be turned off with debugLevel < debugLevA=1)
83      - improve vectorizability of exf_interp for TARGET_NEC_SX, makes code
84        ugly but fast by unrolling short inner loops, inserting a unroll=8
85        directive in routine lagran, and splitting a loop and making do while the
86        outermost loop (the latter requires the intoduction of index arrays)
87    o pkg/obcs: replace obcs_apply_area/heff/hsalt/hsnow with obcs_apply_seaice
88    o pkg/seaice: moved DIFFERENT_MULTIPLE from seaice_model to seaice_dynsolver
89      http://forge.csail.mit.edu/pipermail/mitgcm-devel/2008-January/003173.html
90    o verification/seaice_obcs: updated for restart test and latest options
91    o pkg/seaice: add a new flag SEAICEuseTEM to use a slightly different
92      ice rheology (so-called truncated ellipse, that gets rid of tensile stress);
93      for now this is only available for the C-grid code and also within
94      #ifdef SEAICE_ALLOW_TEM, because this option may slow down the EVP code
95    
96    checkpoint59m
97    o pkg/seaice: use different time constant for melting (SEAICE_gamma_t)
98      and freezing (SEAICE_gamma_t_frz) ice due to mixed layer temperature
99    o gad_som : fix flux output (& diagnostics) to have same units as other  
100      advection scheme fluxes (was previously multiplied by deltaT).  
101    o added verification/seaice_obcs both to test seaice open boundaries
102      and to provide an example matlab scrpt for generating them
103    o added verification/lab_sea/input.salt_plume for testing pkg/salt_plume
104    o pkg/salt_plume: clean up salt_plume_frac.F to
105      remove redundancy in PlumeMethod 1 and 4
106    o pkg/kpp: added saltplume diagnostics
107    o pkg/obcs and pkg/seaice:
108      - do not set uice and vice to zero when OB*icefile are unspecified
109      - OBCS_SEAICE_AVOID_CONVERGENCE is undefined by default
110      - moved seaice tracer obcs after call to seaice_growth
111    o pkg/salt_plume: added various options for salt plume depth
112      criterion and for vertical distribution of the salt
113    
114    checkpoint59l
115    o pkg/ptracers: new version of ptracers pickup:
116      read meta file and write only fields which are needed to restart.
117      ( same logic as main pickup file ; also using pickupStrictlyMatch )
118    o pkg/seaice:
119      - add timescale for melting due to warm mixed layer as a means of
120        setting SEAICE_availHeatFrac more conveniently
121      - add a CPP-flag/runtime parameter check for flooding algorithm
122      - reformulated availHeat in seaice_growth.F to be independent of AREA
123    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
124      unit changes
125    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
126    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
127      SX vector computer.
128    o pkg/seaice:
129      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
130        seaice forcing fields can now be read only through pkg/exf
131      - removed some unused halos
132    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
133    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
134      or U/VICE from U/VWIND before computing U/VSTRESS
135    
136    checkpoint59k
137    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
138      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
139    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
140      all experiments pass when compile with un-initialised var. checking option.
141    o added pkg/salt_plume
142    o script to test restart (for now, in MITgcm_contrib/jmc_script)
143    o pkg/seaice: new read/write pickup version.
144      read meta file and write only fields which are needed to restart.
145      ( same logic as main pickup file ; also using pickupStrictlyMatch )
146    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
147    o lab_sea.hb87: modify the domain & update output.hb87.txt :
148      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
149      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
150      process. Fixed here by closing the domain at the Northern boundary.
151    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
152    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
153      a set of consecutive levels in/from a 3-D array.
154    o pkg/ptracers:
155      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
156      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
157    
158    checkpoint59j
159    o in pkgs: dic, obcs, offline, rbcs:
160      standard way to compute coeff. for time interpolation between 2 time reccords
161      which retains full precision (& make results less dependent on compiler).
162      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
163    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
164      packages instead of reading ice cover and wind speed separately
165    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
166     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
167      to allow to compile customized code before the update)
168    o cleaning-up:
169      - fix CPP instruction syntax in pkg/obcs
170      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
171        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
172      - fix some threads issue in IO parts.
173    o pkg/dic:
174      - add tons of "_d 0" (--> much better testreports !)
175       and then update outputs of tutorial_global_oce_biogeo
176    o pkg/mom_fluxform:
177      add a special version of momentum advection intended to conserve momentum
178      next to a bathymetry step or a coastline edge. (default = off = #undef)
179    o new read/write pickup version:
180      - for now, only implemented for main (mdsio) pickup file.
181      - write out only what is needed to restart; merge pickup_nh , pickup_ph
182        and main pickup together.
183      - read meta file; read only what is needed to restart; stop if a field
184        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
185        if it make sense (even if the restart is not perfect).
186      - if no meta file, assume that pickup to read corresponds exactly to
187        a pickup that would currently be written.
188      - read pickup written in the old format (until checkpoint59i) if it
189        recognizes an old meta file (no field-list).
190      - add a meta file in exp. which starts from a pickup: 2 cases:
191        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
192         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
193        b) a meta file describing the content of the associated pickup file
194         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
195    o pkg/mdsio & pkg/rw:
196      - new routine to read a meta file ; new set of routine to read
197        Multiple-fields file (with meta file).
198    o added open boundary conditions capability for seaice
199        HSNOW, HSALT, UICE, and VICE
200    
201    checkpoint59i
202    o adjoint:
203      * fix multiDimAdvection adjoint
204        (partial recomputation problem by TAF for fVerT(:,:,kDown)
205        and comlev1 size definition (maxpass vs. max. number of tracers)
206      * verification/global_ocean.90x45x15 adjoint now tests
207        NLFS and multiDimAdvection using DST3 (=30)
208      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
209    o pkg/kpp: add "_d 0" to real constant (if missing);
210      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
211      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
212    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
213      for internal parameters related to restart process (formerly from PARAMS.h)
214      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
215    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
216      as argument. (only atm2d & obcs write_pickup have not yet been updated)
217    o pkg/monitor:
218      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
219      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
220      - account for deep Atmosphere factor and density factor (anelastic)
221    o added open boundary conditions capability for seaice HEFF and AREA
222    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
223      thermodynamics
224      - requires a little reorganization, which affects the testreport results
225        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
226        so that now the conservative form is tested
227      - add a few comments
228    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
229    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
230    o add new diagnostics to seaice: advective, diffusive fluxes (only for
231      multidim-advection, for scheme 2 they are not filled) and transports,
232      thermodynamic growth rates
233    o change units of EmPmR (inside the code, + within coupling interface)
234      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
235      Affects results @ truncation level (cg2d match) and update output of
236       experiments: lab_sea(6), global_ocean.90x40x15(10),
237      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
238      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
239      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
240      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
241    
242    checkpoint59h
243    o pkg/exf:
244      - improve vectorization by moving if-statement out of loops in
245        exf_mapfields, exf_radiation
246      - exf_bulkformulae.F: introduce 2D fields and vectorize code
247    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
248    o testreport:
249      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
250        monitor & update offline_exf_seaice exp. output.
251      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
252    o pkg/seaice:
253      - bug fix in the evp solver: boundary conditions were affected be
254        masking of zMax/zMin (changes results)
255      - minor bug fix in boundary conditions in seaice_calc_strainrates
256        (changes results for no_slip)
257      - seaice_lsr.F: make interpolation of eta dependent on boundaries
258      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
259      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
260        stress formulation and no-slip boundary conditions
261    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
262      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
263    o pkg/seaice: a first HSALT time stepping equation has been checked in
264    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
265      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
266      without requiring DO-IF statements
267    o pkg/thsice:
268      use continuous power-law function for partition of energy between lateral
269      melting/freezing and thinning/thickening ; old code using step function
270      still available with #undef THSICE_FRACEN_POWERLAW
271      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
272    o testreport: change AD testing : check against results/output_adm.txt
273      using same scripts as for forward test.
274    
275    checkpoint59g
276    o adjoint testing: in preparation for changing testreport:
277      - output format: cost and grad written on separated lines
278      - ad output results in directory "results" (instead of "results_ad")
279    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
280    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
281    o pkg/ecco: allow user defined cost function contributions
282    o testreport:
283      Allow to choose (per experiment) the list of tested output variables
284       and the main variable (used to issue a pass/FAIL ) ;
285      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
286      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
287      Also modify printing of summary:
288       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
289       b) echo the list of tested variables in the individual summary.txt of
290          each experiment.
291    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
292      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
293      (but still depend on the tile decompostion of the domain).
294    o pkg/seaice: change a discretization detail to make the B-grid code
295      "more symmetric". This change is likely to remove all "ridges/leads" that
296      where quasi-aligned with the grid in B-grid solutions. It may also be
297      the solution to the stress coupling issues with the B-grid.
298    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
299      remove .cvsignore from input dir. (since testreport no longer run here).
300    o pkg/thsice:
301     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
302     - fix reshaping of sea-ice just after advection:
303       melt all the ice only if ice-volume is too small.
304     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
305       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
306     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
307    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
308      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
309    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
310      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
311      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
312      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
313      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
314      -> update output.txt
315    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
316     this affects truncation error: -> update output.txt of exp:
317      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
318      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
319    
320    checkpoint59f
321    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
322    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
323      a bounded range (in forward mode)
324    o pkg/ecco, ctrl, autodiff and mom_common:
325     internal parameter controls, completements of implementations
326    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
327    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
328      (not seem any difference in testing results).
329    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
330       at face corners.
331    o pkg/generic_advdiff:
332     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
333      loop range indices for computing vertical advection tendency
334      and do the calculation in the interior only (no overlap) ;
335      for now, only implemented for SOM advection (to save CPU time).
336     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
337    o exch2 adjoint
338      First set of changes:
339      - add exch2 hand-written adjoint templates
340      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
341        This will require cleanup in pkg/autodiff/*.F
342        (changed routines currently kept separate in verif. code/)
343      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
344        that used to hide exch2 or cubed-sphere specific code
345        (commented via 'cph-exch2')
346    o pkg/seaice
347      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
348    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
349       output of global_ocean.cs32x15.thsice .
350    
351    checkpoint59e
352    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
353      for B-grid vector (not yet tested) and C-grid vector (<- only used
354      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
355    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
356      (#ifdef ALLOW_SALT_PLUME)
357    o gather_2d/scatter_2d: removed halo regions
358    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
359      scheme and the corresponding test case (under front_relax dir). For now,
360      only available with Skew-flux form and not yet tested in realistic set-up.
361      adjoint: store directives updated, but gradient checks deteriorated,
362      so maybe GM/Redi adjoint is now broken.
363    o seaice adjoint
364      * add AREA, HEFF, HSNOW as control variable
365        (should not change lab_sea results)
366      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
367    o pkg/seaice:
368      * added computation of saltFlux in seaice_growth;
369        For time being, sea ice salinity is assumed constant
370        contribution of snow flooding to freshening of sea ice is neglected.
371        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
372        defaults to 0.0 in order to maintain backward compatibility.
373        Typical values for SEAICE_salinity are 4 to 10 g/kg.
374      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
375      * added SEAICE_availHeatFrac, which specifies fraction of surface level
376        heat content used to melt or grow ice
377      * commented out cap of HICE: it helps keep ice thinner
378      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
379      * applied OBCS T/S mask to HEFFM sea ice mask
380    
381    checkpoint59d
382    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
383     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
384     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
385    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
386     and change default value of parameter "GM_Small_Number";
387     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
388       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
389       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
390    o pkg/ecco: cost function when applying pkg/smooth to controls
391    o pkg/ctrl: add forcingPrecond run time parameter
392    o pkg/seaice:
393     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
394     - fix bug in metric terms of u-equation in LSR solver (implicit part),
395       changes verification/lab_sea
396     - rearrange implicit part of u-equation in LSR solver to make it easier to
397       read, understand, and debug. This causes changes at the truncation level.
398     - fix (serious) bug in the boundary conditions (sign error in the implicit
399       part) of the LSR solver. Changes all LSR results.
400     - fixed problem with HSNOW initialization to avoid thick snow when AREA
401       is initilized with small values - does not change lab_sea results.
402     - added HsnowFile initialization capability
403    o pkg/smooth: addition to model/src and pkg/ctrl so allow
404     initialization of pkg/smooth and application to control vector
405    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
406    o dependencies: pkg/profiles requires pkg/cal
407    o pkg/profiles:
408     - added option ALLOW_PROFILES_GENERICGRID
409         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
410         that interpolation information (grid points and coefficients) is provided
411         within the netcdf input files.
412         -> sample matlab scripts can be found in MITgcm_contrib/gael
413         that allow you to prepare netcdf input files.
414     - also modified: cleaner include statements, cleaner error print statements,
415       cleaner stops when error, and more tests of the netcdf input files consistency.
416    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
417    o pkg/seaice:
418     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
419       requires a new routine: seaice_diagnostics_fill.F
420     - make sure that seaice does not move if not forced (pressure replacement
421       method, Hibler and Ip, 1995), changes results
422     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
423     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
424       It is turned off by default (=-1.), because it changes the results.
425     - make it possible to read AREA from a file, too.
426    
427    checkpoint59c
428    o add S/R and diagnostics for oceanic mixed-layer depth
429    o move GMRedi call after all vertical mixing schemes (including KPP)
430    o pkg/thsice:
431     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
432      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
433    o pkg/obcs:
434     - bug fix for balance code
435    o pkg/seaice:
436      - allow values of SEAICE_elasticParm > 1
437      - add new parameter SEAICE_evpTauRelax as an alternative
438        to SEAICE_elasticParm
439      - make lsr boundary conditions free slip (by default), changes result
440      - add code for no slip boundary conditions for lsr
441      - set minimum of zeta to zero (and not 4e8) (changes results)
442      - add a cap on AREA after advecting AREA if seaice_growth is not called
443    o change calculation of Visbeck K:
444      - no longer depend on tapering scheme; instead, compute slope (limited
445        by GM_maxSlope). this is equivalent to what was comuted before with
446        clipping or linear tappering.
447      - fix vertical averaging (wrong by 1/2 level)
448      - leave the old version (but will not be maintained) within
449        #ifdef OLD_VISBECK_CALC / #endif
450      - update output of exp. ideal_2D_oce
451    o change error catch in calc_r_star to improve vectorization
452    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
453      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
454    o adjoint:
455      Re-organized adjoint checkpointing according to Matt Mazloff
456      (but with modifs/completions/cleanups)
457      Storing is now bundled into large arrays to optimized I/O
458      (and second step in cleanup of the_main_loop)
459    
460    checkpoint59b
461    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
462      - export/import (between ocean & coupler) fields needed for ocean DIC.
463    o pkg/seaice:
464      - get rid of three more exchanges seaice_calc_viscosities (required
465        different loop boundaries in seaice_lsr and seaice_ocean_stress)
466      - bug fix in seaice_ocean_stress (update of lab_sea required)
467      - reduce loop boundaries to necessary minimum also in seaice_evp
468      - go back to the old way of computing deltaC/Z as the adjoint likes that
469        better
470    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
471      passive tracer to an Age Tracer) + update output.txt
472    o pkg/exf:
473      - implement A-grid / C-grid selection for wind-stress input files.
474      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
475      for now, in exf_bulk_largeyeager04.F only :
476      - change implementation for case where windspeed + 2. components wind-stress
477        are read-in. AND use rhoConstFresh to convert evap.
478    o pkg/seaice:
479      - use correct EXCH_UV for wind-forcing (on A-grid).
480      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
481        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
482    o pkg/exf:
483      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
484      EXF_INTERPOLATION:
485      - merge global_with_exf/code version of exf_interp_read.F
486        to the main code ;
487      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
488        reading the file ; Important: This options needs to be defined to recover
489        previous code.
490        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
491      - no longer loose real*8 precision along the way when using exf_iprec=64.
492    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
493      - change discretisation of evp-solver in order to avoid another exchange
494        (changes lab_sea) and clean up a little
495      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
496        help the adjoint (this also changes the results slightly)
497      - add a few "_d 0" where they had been missing in seaice_evp.F
498      - cleaning up: remove unused seaice_calc_rhs.F
499    o pkg/exf: some cleaning-up:
500      - change various "constants" into runtime parameters
501      - cleaned-up Large&Yeager04 routine which should eventually
502        replace exf_bulkformulae.F (changed names of S/R and CPP)
503        and merged various ALLOW_ATM_WIND options
504     only used with thsice pkg (in thsice_get_exf.F):
505      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
506        which are used when useStabilityFct_overIce=TRUE (= the default)
507      - change default values of ice & snow emissivity and scale downward LW
508        by ice & snow emissivity.
509    o pkg/thsice:
510     fix few little problems, in thsice_calc_thickn.F:
511      - growth vertically (and not laterally) if iceFrac == iceMaskMax
512      - melt only laterally if hIce < hThinIce (as the comments say)
513      and in thsice_extend.F:
514      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
515      - start to form ice as soon as the minimum ice-volume is reachable.
516     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
517      and cpl_aim+ocn
518    o pkg/kpp
519     - move computation of surface related input fields to KPP into a new
520       subroutine kpp_forcing_surf.F
521     - remove wrong (within bi,bj loops) EXCH calls.
522     - little cleaning (add argument myThid in last position, cvs header ...)
523     - for now, fix conservation problem by exchanging KPPviscAz (may not
524       be the best fix)
525    o pkg/seaice
526     - check for inconsistent evp parameter/cpp-flag combination
527     - remove leftover errIO flat for obsolete name list error handling
528    o OpenAD
529     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
530    
531    checkpoint59a
532    o pkg/seaice: some parameter clarifications and a little bit of clean up
533    o pkg/thsice: rename run-time parameters:
534       himin       -> hIceMin
535       himin0      -> hThinIce
536       hihig       -> hThickIce
537       i0          -> i0swFrac
538       transCoef   -> bMeltCoef
539       frac_energy -> fracMelting
540      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
541       with default values (for now) that do not change the results.
542      remove old version of thsice vars advection in pkg/seaice.
543    o in FFIELDS.h:
544      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
545      - make pLoad & sIceLoad always available (but still only used if
546         ATMOSPHERIC_LOADING is #define).
547    o pkg/kpp: replaced _KPP_RL with _RL
548    o bug fixes for vertical diffusivity computations when both KPP and
549        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
550        are no longer updating the vertical diffusivity array
551        (passed as argument) but are (re-) setting those arrays.
552    o pkg/seaice: fix bug in evp solver, while doing that
553      - change (improve?) discretization of stress computations for both
554        cgrid-lsr and evp solver
555      - add a new routine to compute strain rates
556      - the above changes lab_sea results
557      - add no slip conditions for evp solver (off by default), lsr-version
558        may follow
559      - fix exchange for shear at Z-points (does not change lab_sea)
560      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
561        (to force the user to pick a time step since there is not "safe" way
562        of choosing it)
563      - add principal stress diagnostics
564      - rearrange fields for evp a little to avoid having to call a: too many
565        exchanges and b: exchanges for stress trensor components which we do
566        not have.
567      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
568        of evp, complete rewrite for lsr case (latter is does not yet work
569        in all cases)
570    o pkg/kpp: add code to have mixing in shelf ice caverns
571      - add myThid to all kpp routines (long overdue)
572    
573    checkpoint59
574    o pkg/exf:
575      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
576        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
577      - move exf header files from lower_case.h to UPPER_CASE.h ;
578        add missing cvs Header & Name
579      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
580      - add namelist param. selectStressGridPosition, exf_monFreq
581      - retire many _CLIM routines, and remove data.exf_clim
582        + params moved to data.exf
583        + climsst, climsss now handled by exf_set_gen, i.e.
584          climss?period=0 refers to constant field,
585          climss?period=-12 to monthly forcing
586      - split up namelists in data.exf
587    o pkg/seaice:
588      - remove seaice_exch and seaice_exch_uv
589      - remove superfluous exchange of theta
590      - add myThid to seaice_budget_ocean/ice
591      - add new interface for atmospheric wind forcing (C-grid only)
592        + new routine
593        + two new field (taux, tauy for stress over ice)
594        + removed one global field (DAIRN) for C-grid case only
595    o pkg/thsise
596      - 2nd set of modifs for thsice adjoint in conjunction with exf
597    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
598    
599    checkpoint58y_post
600    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
601      vertical diffusivity, similar to that in MOM4; turned on using
602      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
603      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
604    o Added capability for 3D specification of background vertical diffusion
605      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
606      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
607      "data" file that contains the 3D vertical diffusivity coefficients.
608    o ice dynamics (pkg/seaice) with thsice thermodynamics:
609      - add code within pkg thsice to advect & diffuse sea-ice fields
610      similar to (and will replace) what has been added in  seaice_advdiff.F,
611      but: - conserving Mass, Heat & Salt.
612           - better when using non-linear advection scheme (not yet fully tested)
613           - can also be used in atmospheric set-up (for now, only the diffusion).
614    
615    checkpoint58x_post
616    o IO option for global-file compact format:
617      - add options when generating topology (utils/exch2/matlab-topology-generator)
618      - add I/O capability (pkg/mdsio).
619      - adapt utils/matlab/rdmds.m to read this format.
620      for now long-line format not yet supported by pkg/mdsio (& exch2).
621    o shelfice: add a few diagnostics
622    
623    checkpoint58w_post
624    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
625      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
626      (and replace horiVertRatio in NH code).
627      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
628                         and tutorial_plume_on_slope (sensitive to truncation)
629    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
630      directly to drive seaice model (C-grid only)
631    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
632     - reintroduce computation of wind from stress,
633     - compute tau (in exf_bulkformulae.F) from windstress averaged to
634       mass points to avoid tau = 0
635     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
636    o rdmnc.m: make it work with "global" files created with gluemnc
637    o rdmnc.m : some improvements in dealing with singleton dimension
638      (tested on all testreport mnc output files).
639    o genmake2: disable pkg/profiles if netcdf test fails.
640    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
641    o move call to cal_readparms up to make calendar parameters/variable available
642      to all packages
643    
644  checkpoint58v_post  checkpoint58v_post
645  o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get  o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
646    useDynP_inEos_Zc tested.    useDynP_inEos_Zc tested.

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