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revision 1.672 by dimitri, Thu Jun 8 23:09:55 2006 UTC revision 1.909 by jmc, Tue Nov 13 22:20:29 2007 UTC
# Line 4  $Name$ Line 4  $Name$
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    o lab_sea.hb87: modify the domain & update output.hb87.txt :
8      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
9      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
10      process. Fixed here by closing the domain at the Northern boundary.
11    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
12    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
13      a set of consecutive levels in/from a 3-D array.
14    o pkg/ptracers:
15      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
16      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
17    
18    checkpoint59j
19    o in pkgs: dic, obcs, offline, rbcs:
20      standard way to compute coeff. for time interpolation between 2 time reccords
21      which retains full precision (& make results less dependent on compiler).
22      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
23    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
24      packages instead of reading ice cover and wind speed separately
25    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
26     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
27      to allow to compile customized code before the update)
28    o cleaning-up:
29      - fix CPP instruction syntax in pkg/obcs
30      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
31        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
32      - fix some threads issue in IO parts.
33    o pkg/dic:
34      - add tons of "_d 0" (--> much better testreports !)
35       and then update outputs of tutorial_global_oce_biogeo
36    o pkg/mom_fluxform:
37      add a special version of momentum advection intended to conserve momentum
38      next to a bathymetry step or a coastline edge. (default = off = #undef)
39    o new read/write pickup version:
40      - for now, only implemented for main (mdsio) pickup file.
41      - write out only what is needed to restart; merge pickup_nh , pickup_ph
42        and main pickup together.
43      - read meta file; read only what is needed to restart; stop if a field
44        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
45        if it make sense (even if the restart is not perfect).
46      - if no meta file, assume that pickup to read corresponds exactly to
47        a pickup that would currently be written.
48      - read pickup written in the old format (until checkpoint59i) if it
49        recognizes an old meta file (no field-list).
50      - add a meta file in exp. which starts from a pickup: 2 cases:
51        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
52         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
53        b) a meta file describing the content of the associated pickup file
54         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
55    o pkg/mdsio & pkg/rw:
56      - new routine to read a meta file ; new set of routine to read
57        Multiple-fields file (with meta file).
58    o added open boundary conditions capability for seaice
59        HSNOW, HSALT, UICE, and VICE
60    
61    checkpoint59i
62    o adjoint:
63      * fix multiDimAdvection adjoint
64        (partial recomputation problem by TAF for fVerT(:,:,kDown)
65        and comlev1 size definition (maxpass vs. max. number of tracers)
66      * verification/global_ocean.90x45x15 adjoint now tests
67        NLFS and multiDimAdvection using DST3 (=30)
68      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
69    o pkg/kpp: add "_d 0" to real constant (if missing);
70      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
71      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
72    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
73      for internal parameters related to restart process (formerly from PARAMS.h)
74      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
75    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
76      as argument. (only atm2d & obcs write_pickup have not yet been updated)
77    o pkg/monitor:
78      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
79      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
80      - account for deep Atmosphere factor and density factor (anelastic)
81    o added open boundary conditions capability for seaice HEFF and AREA
82    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
83      thermodynamics
84      - requires a little reorganization, which affects the testreport results
85        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
86        so that now the conservative form is tested
87      - add a few comments
88    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
89    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
90    o add new diagnostics to seaice: advective, diffusive fluxes (only for
91      multidim-advection, for scheme 2 they are not filled) and transports,
92      thermodynamic growth rates
93    o change units of EmPmR (inside the code, + within coupling interface)
94      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
95      Affects results @ truncation level (cg2d match) and update output of
96       experiments: lab_sea(6), global_ocean.90x40x15(10),
97      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
98      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
99      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
100      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
101    
102    checkpoint59h
103    o pkg/exf:
104      - improve vectorization by moving if-statement out of loops in
105        exf_mapfields, exf_radiation
106      - exf_bulkformulae.F: introduce 2D fields and vectorize code
107    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
108    o testreport:
109      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
110        monitor & update offline_exf_seaice exp. output.
111      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
112    o pkg/seaice:
113      - bug fix in the evp solver: boundary conditions were affected be
114        masking of zMax/zMin (changes results)
115      - minor bug fix in boundary conditions in seaice_calc_strainrates
116        (changes results for no_slip)
117      - seaice_lsr.F: make interpolation of eta dependent on boundaries
118      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
119      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
120        stress formulation and no-slip boundary conditions
121    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
122      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
123    o pkg/seaice: a first HSALT time stepping equation has been checked in
124    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
125      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
126      without requiring DO-IF statements
127    o pkg/thsice:
128      use continuous power-law function for partition of energy between lateral
129      melting/freezing and thinning/thickening ; old code using step function
130      still available with #undef THSICE_FRACEN_POWERLAW
131      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
132    o testreport: change AD testing : check against results/output_adm.txt
133      using same scripts as for forward test.
134    
135    checkpoint59g
136    o adjoint testing: in preparation for changing testreport:
137      - output format: cost and grad written on separated lines
138      - ad output results in directory "results" (instead of "results_ad")
139    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
140    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
141    o pkg/ecco: allow user defined cost function contributions
142    o testreport:
143      Allow to choose (per experiment) the list of tested output variables
144       and the main variable (used to issue a pass/FAIL ) ;
145      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
146      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
147      Also modify printing of summary:
148       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
149       b) echo the list of tested variables in the individual summary.txt of
150          each experiment.
151    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
152      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
153      (but still depend on the tile decompostion of the domain).
154    o pkg/seaice: change a discretization detail to make the B-grid code
155      "more symmetric". This change is likely to remove all "ridges/leads" that
156      where quasi-aligned with the grid in B-grid solutions. It may also be
157      the solution to the stress coupling issues with the B-grid.
158    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
159      remove .cvsignore from input dir. (since testreport no longer run here).
160    o pkg/thsice:
161     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
162     - fix reshaping of sea-ice just after advection:
163       melt all the ice only if ice-volume is too small.
164     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
165       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
166     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
167    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
168      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
169    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
170      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
171      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
172      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
173      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
174      -> update output.txt
175    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
176     this affects truncation error: -> update output.txt of exp:
177      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
178      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
179    
180    checkpoint59f
181    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
182    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
183      a bounded range (in forward mode)
184    o pkg/ecco, ctrl, autodiff and mom_common:
185     internal parameter controls, completements of implementations
186    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
187    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
188      (not seem any difference in testing results).
189    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
190       at face corners.
191    o pkg/generic_advdiff:
192     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
193      loop range indices for computing vertical advection tendency
194      and do the calculation in the interior only (no overlap) ;
195      for now, only implemented for SOM advection (to save CPU time).
196     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
197    o exch2 adjoint
198      First set of changes:
199      - add exch2 hand-written adjoint templates
200      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
201        This will require cleanup in pkg/autodiff/*.F
202        (changed routines currently kept separate in verif. code/)
203      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
204        that used to hide exch2 or cubed-sphere specific code
205        (commented via 'cph-exch2')
206    o pkg/seaice
207      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
208    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
209       output of global_ocean.cs32x15.thsice .
210    
211    checkpoint59e
212    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
213      for B-grid vector (not yet tested) and C-grid vector (<- only used
214      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
215    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
216      (#ifdef ALLOW_SALT_PLUME)
217    o gather_2d/scatter_2d: removed halo regions
218    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
219      scheme and the corresponding test case (under front_relax dir). For now,
220      only available with Skew-flux form and not yet tested in realistic set-up.
221      adjoint: store directives updated, but gradient checks deteriorated,
222      so maybe GM/Redi adjoint is now broken.
223    o seaice adjoint
224      * add AREA, HEFF, HSNOW as control variable
225        (should not change lab_sea results)
226      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
227    o pkg/seaice:
228      * added computation of saltFlux in seaice_growth;
229        For time being, sea ice salinity is assumed constant
230        contribution of snow flooding to freshening of sea ice is neglected.
231        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
232        defaults to 0.0 in order to maintain backward compatibility.
233        Typical values for SEAICE_salinity are 4 to 10 g/kg.
234      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
235      * added SEAICE_availHeatFrac, which specifies fraction of surface level
236        heat content used to melt or grow ice
237      * commented out cap of HICE: it helps keep ice thinner
238      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
239      * applied OBCS T/S mask to HEFFM sea ice mask
240    
241    checkpoint59d
242    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
243     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
244     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
245    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
246     and change default value of parameter "GM_Small_Number";
247     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
248       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
249       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
250    o pkg/ecco: cost function when applying pkg/smooth to controls
251    o pkg/ctrl: add forcingPrecond run time parameter
252    o pkg/seaice:
253     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
254     - fix bug in metric terms of u-equation in LSR solver (implicit part),
255       changes verification/lab_sea
256     - rearrange implicit part of u-equation in LSR solver to make it easier to
257       read, understand, and debug. This causes changes at the truncation level.
258     - fix (serious) bug in the boundary conditions (sign error in the implicit
259       part) of the LSR solver. Changes all LSR results.
260     - fixed problem with HSNOW initialization to avoid thick snow when AREA
261       is initilized with small values - does not change lab_sea results.
262     - added HsnowFile initialization capability
263    o pkg/smooth: addition to model/src and pkg/ctrl so allow
264     initialization of pkg/smooth and application to control vector
265    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
266    o dependencies: pkg/profiles requires pkg/cal
267    o pkg/profiles:
268     - added option ALLOW_PROFILES_GENERICGRID
269         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
270         that interpolation information (grid points and coefficients) is provided
271         within the netcdf input files.
272         -> sample matlab scripts can be found in MITgcm_contrib/gael
273         that allow you to prepare netcdf input files.
274     - also modified: cleaner include statements, cleaner error print statements,
275       cleaner stops when error, and more tests of the netcdf input files consistency.
276    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
277    o pkg/seaice:
278     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
279       requires a new routine: seaice_diagnostics_fill.F
280     - make sure that seaice does not move if not forced (pressure replacement
281       method, Hibler and Ip, 1995), changes results
282     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
283     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
284       It is turned off by default (=-1.), because it changes the results.
285     - make it possible to read AREA from a file, too.
286    
287    checkpoint59c
288    o add S/R and diagnostics for oceanic mixed-layer depth
289    o move GMRedi call after all vertical mixing schemes (including KPP)
290    o pkg/thsice:
291     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
292      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
293    o pkg/obcs:
294     - bug fix for balance code
295    o pkg/seaice:
296      - allow values of SEAICE_elasticParm > 1
297      - add new parameter SEAICE_evpTauRelax as an alternative
298        to SEAICE_elasticParm
299      - make lsr boundary conditions free slip (by default), changes result
300      - add code for no slip boundary conditions for lsr
301      - set minimum of zeta to zero (and not 4e8) (changes results)
302      - add a cap on AREA after advecting AREA if seaice_growth is not called
303    o change calculation of Visbeck K:
304      - no longer depend on tapering scheme; instead, compute slope (limited
305        by GM_maxSlope). this is equivalent to what was comuted before with
306        clipping or linear tappering.
307      - fix vertical averaging (wrong by 1/2 level)
308      - leave the old version (but will not be maintained) within
309        #ifdef OLD_VISBECK_CALC / #endif
310      - update output of exp. ideal_2D_oce
311    o change error catch in calc_r_star to improve vectorization
312    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
313      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
314    o adjoint:
315      Re-organized adjoint checkpointing according to Matt Mazloff
316      (but with modifs/completions/cleanups)
317      Storing is now bundled into large arrays to optimized I/O
318      (and second step in cleanup of the_main_loop)
319    
320    checkpoint59b
321    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
322      - export/import (between ocean & coupler) fields needed for ocean DIC.
323    o pkg/seaice:
324      - get rid of three more exchanges seaice_calc_viscosities (required
325        different loop boundaries in seaice_lsr and seaice_ocean_stress)
326      - bug fix in seaice_ocean_stress (update of lab_sea required)
327      - reduce loop boundaries to necessary minimum also in seaice_evp
328      - go back to the old way of computing deltaC/Z as the adjoint likes that
329        better
330    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
331      passive tracer to an Age Tracer) + update output.txt
332    o pkg/exf:
333      - implement A-grid / C-grid selection for wind-stress input files.
334      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
335      for now, in exf_bulk_largeyeager04.F only :
336      - change implementation for case where windspeed + 2. components wind-stress
337        are read-in. AND use rhoConstFresh to convert evap.
338    o pkg/seaice:
339      - use correct EXCH_UV for wind-forcing (on A-grid).
340      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
341        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
342    o pkg/exf:
343      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
344      EXF_INTERPOLATION:
345      - merge global_with_exf/code version of exf_interp_read.F
346        to the main code ;
347      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
348        reading the file ; Important: This options needs to be defined to recover
349        previous code.
350        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
351      - no longer loose real*8 precision along the way when using exf_iprec=64.
352    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
353      - change discretisation of evp-solver in order to avoid another exchange
354        (changes lab_sea) and clean up a little
355      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
356        help the adjoint (this also changes the results slightly)
357      - add a few "_d 0" where they had been missing in seaice_evp.F
358      - cleaning up: remove unused seaice_calc_rhs.F
359    o pkg/exf: some cleaning-up:
360      - change various "constants" into runtime parameters
361      - cleaned-up Large&Yeager04 routine which should eventually
362        replace exf_bulkformulae.F (changed names of S/R and CPP)
363        and merged various ALLOW_ATM_WIND options
364     only used with thsice pkg (in thsice_get_exf.F):
365      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
366        which are used when useStabilityFct_overIce=TRUE (= the default)
367      - change default values of ice & snow emissivity and scale downward LW
368        by ice & snow emissivity.
369    o pkg/thsice:
370     fix few little problems, in thsice_calc_thickn.F:
371      - growth vertically (and not laterally) if iceFrac == iceMaskMax
372      - melt only laterally if hIce < hThinIce (as the comments say)
373      and in thsice_extend.F:
374      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
375      - start to form ice as soon as the minimum ice-volume is reachable.
376     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
377      and cpl_aim+ocn
378    o pkg/kpp
379     - move computation of surface related input fields to KPP into a new
380       subroutine kpp_forcing_surf.F
381     - remove wrong (within bi,bj loops) EXCH calls.
382     - little cleaning (add argument myThid in last position, cvs header ...)
383     - for now, fix conservation problem by exchanging KPPviscAz (may not
384       be the best fix)
385    o pkg/seaice
386     - check for inconsistent evp parameter/cpp-flag combination
387     - remove leftover errIO flat for obsolete name list error handling
388    o OpenAD
389     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
390    
391    checkpoint59a
392    o pkg/seaice: some parameter clarifications and a little bit of clean up
393    o pkg/thsice: rename run-time parameters:
394       himin       -> hIceMin
395       himin0      -> hThinIce
396       hihig       -> hThickIce
397       i0          -> i0swFrac
398       transCoef   -> bMeltCoef
399       frac_energy -> fracMelting
400      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
401       with default values (for now) that do not change the results.
402      remove old version of thsice vars advection in pkg/seaice.
403    o in FFIELDS.h:
404      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
405      - make pLoad & sIceLoad always available (but still only used if
406         ATMOSPHERIC_LOADING is #define).
407    o pkg/kpp: replaced _KPP_RL with _RL
408    o bug fixes for vertical diffusivity computations when both KPP and
409        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
410        are no longer updating the vertical diffusivity array
411        (passed as argument) but are (re-) setting those arrays.
412    o pkg/seaice: fix bug in evp solver, while doing that
413      - change (improve?) discretization of stress computations for both
414        cgrid-lsr and evp solver
415      - add a new routine to compute strain rates
416      - the above changes lab_sea results
417      - add no slip conditions for evp solver (off by default), lsr-version
418        may follow
419      - fix exchange for shear at Z-points (does not change lab_sea)
420      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
421        (to force the user to pick a time step since there is not "safe" way
422        of choosing it)
423      - add principal stress diagnostics
424      - rearrange fields for evp a little to avoid having to call a: too many
425        exchanges and b: exchanges for stress trensor components which we do
426        not have.
427      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
428        of evp, complete rewrite for lsr case (latter is does not yet work
429        in all cases)
430    o pkg/kpp: add code to have mixing in shelf ice caverns
431      - add myThid to all kpp routines (long overdue)
432    
433    checkpoint59
434    o pkg/exf:
435      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
436        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
437      - move exf header files from lower_case.h to UPPER_CASE.h ;
438        add missing cvs Header & Name
439      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
440      - add namelist param. selectStressGridPosition, exf_monFreq
441      - retire many _CLIM routines, and remove data.exf_clim
442        + params moved to data.exf
443        + climsst, climsss now handled by exf_set_gen, i.e.
444          climss?period=0 refers to constant field,
445          climss?period=-12 to monthly forcing
446      - split up namelists in data.exf
447    o pkg/seaice:
448      - remove seaice_exch and seaice_exch_uv
449      - remove superfluous exchange of theta
450      - add myThid to seaice_budget_ocean/ice
451      - add new interface for atmospheric wind forcing (C-grid only)
452        + new routine
453        + two new field (taux, tauy for stress over ice)
454        + removed one global field (DAIRN) for C-grid case only
455    o pkg/thsise
456      - 2nd set of modifs for thsice adjoint in conjunction with exf
457    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
458    
459    checkpoint58y_post
460    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
461      vertical diffusivity, similar to that in MOM4; turned on using
462      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
463      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
464    o Added capability for 3D specification of background vertical diffusion
465      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
466      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
467      "data" file that contains the 3D vertical diffusivity coefficients.
468    o ice dynamics (pkg/seaice) with thsice thermodynamics:
469      - add code within pkg thsice to advect & diffuse sea-ice fields
470      similar to (and will replace) what has been added in  seaice_advdiff.F,
471      but: - conserving Mass, Heat & Salt.
472           - better when using non-linear advection scheme (not yet fully tested)
473           - can also be used in atmospheric set-up (for now, only the diffusion).
474    
475    checkpoint58x_post
476    o IO option for global-file compact format:
477      - add options when generating topology (utils/exch2/matlab-topology-generator)
478      - add I/O capability (pkg/mdsio).
479      - adapt utils/matlab/rdmds.m to read this format.
480      for now long-line format not yet supported by pkg/mdsio (& exch2).
481    o shelfice: add a few diagnostics
482    
483    checkpoint58w_post
484    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
485      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
486      (and replace horiVertRatio in NH code).
487      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
488                         and tutorial_plume_on_slope (sensitive to truncation)
489    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
490      directly to drive seaice model (C-grid only)
491    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
492     - reintroduce computation of wind from stress,
493     - compute tau (in exf_bulkformulae.F) from windstress averaged to
494       mass points to avoid tau = 0
495     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
496    o rdmnc.m: make it work with "global" files created with gluemnc
497    o rdmnc.m : some improvements in dealing with singleton dimension
498      (tested on all testreport mnc output files).
499    o genmake2: disable pkg/profiles if netcdf test fails.
500    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
501    o move call to cal_readparms up to make calendar parameters/variable available
502      to all packages
503    
504    checkpoint58v_post
505    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
506      useDynP_inEos_Zc tested.
507    o pkg/exf: changes to properly interpolate/mask/scale initial fields
508    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
509      and portions thereof.  See read_cs.txt for description and examples.
510    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
511      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
512      following the great-circle arc between those 2 points.
513    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
514      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
515    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
516     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
517     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
518     - still needs work (not working with some options ; efficiency to improve)
519       and serious testing.
520     - use this scheme for temperature & salinity in 2 advection test exp.:
521       advect_xy & advect_xz, respectively.
522    
523    checkpoint58u_post
524    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
525    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
526    o testreport: add option "-skipdir" to skip some test.
527    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
528      momentum calculation.
529    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
530    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
531      remove checkpoint.F and the_correction_step.F (no longer used);
532      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
533    o add option (linFSConserveTr) to correct for tracer source/sink due to
534      Linear Free surface
535    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
536    o pkg/thsice: fix reading mnc-pickups
537    
538    checkpoint58t_post
539    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
540    o pkg/mdsio:
541     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
542       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
543       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
544     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
545     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
546       either MDS_READ_FIELD or MDS_WRITE_FIELD )
547     - new S/R (to replace MDSWRITEMETA), which allows to write more
548       informations (variable names, time ...) to meta files.
549     - modify rdmds.m to give back the meta file content.
550    o pkg/diagnostics: change vertical interpolation to be safer, and more
551       flexible (define p-levels to interpolate to in data.diagnostics);
552      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
553       diagnostic pointer.
554    o pkg/seaice: more cleaning up of seaice_growth, added many comments
555    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
556    o fix multi-category seaice:
557     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
558       SEAICE_MULTICATEGORY
559     - fix short wave heat flux
560    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
561       and allow to use EVP solver. Change forward lab_sea: test both EVP
562       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
563    o Initial check-in of lab_sea adjoint
564      (very similar to natl_box_adjoint/code_seaice)
565      * used C-grid and EVP solver
566      * used KPP, GM/Redi
567      * uses inAdExact=.TRUE.
568      * gradient checks fail for both ADM and TLM
569        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
570        f.d. gradients actually seem more problematic than ADM, TLM gradients;
571        issue is related to forward mismatch between g77 an ifort
572    o pkg/seaice: overhaul of thermodynamics
573     - growth.F and groatb.F are replaced by new routine seaice_growth.F
574     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
575     - move a few global fields out of SEAICE.h into seaice_growth.F and
576       make them 2D (FICE/QNETO/ ...)
577     - remove FO (it is the same as QNETO)
578     - introduce a few local fields to avoid modifying external fields such
579       as atemp, etc.
580    
581    checkpoint58s_post
582    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
583      changed exf_set_gen.F so that
584        genperiod=0 means input file is one time-constant field and
585        genperiod=-12 means input file contains 12 monthly means
586    o CG2D: use pre-computed solver main-diagonal (stored in common block);
587      this affects truncation error ; generate new output file for exp. which
588      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
589        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
590        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
591        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
592        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
593        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
594    o start implementation of deep-atmosphere and anelastic formulation
595    o verification: remove 2nd copy of input files and use script "prepare_run"
596      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
597    o mom_common/vecinv/fluxform: fix a few initialisation isssues
598    o profiles: fix for multithreaded case
599    
600    o diagnostics: rename few diags:
601      s/'PRESSURE'/'RCENTER '/g
602      s/'TICE    '/'oceFreez'/g
603      s/'TAUX    '/'oceTAUX '/g
604      s/'TAUY    '/'oceTAUY '/g
605      s/'SWFLUX  '/'oceQsw  '/g
606      s/DIFx/DFxE/g
607      s/DIFy/DFyE/g
608      and add few ocean-forcing diagnostics:
609      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
610    o modifications to pkg/seaice/growth.F and budget.F, which change results of
611      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
612      as actual snow thickness.  It now refers everywhere to effective snow
613      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
614    
615    checkpoint58r_post
616    o modifications to pkg/seaice/growth.F, which change results of
617      lab_sea experiment: fixes pertain to melting snow over open water, to
618      masking EVAP under sea ice, and to using the correct AREA variable for
619      computations of EVAP, PRECIP, HSNOW, and GHEFF
620    o add ability to read bathy, salt, and theta using MNC (off by def)
621    o add flooding algorithm and advection of HSNOW for pkg/seaice;
622      both are turned off by default and do no change any results
623    o seaice advection with pkg/thsice: a step toward the use of non-linear
624      advection scheme, but #ifdef or commented out for now (requires more EXCH).
625    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
626      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
627      in natl_box (affects results @ truncation level: update output.txt)
628    o multi-threading and IO:
629      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
630      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
631        (needed to work with SingleCpuIO): tested in all verif. exp.
632    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
633      affects the results (but none of the verification test uses this scheme).
634    o Adding some pkg/diagnostics capability to pkg/seaice
635      (will certainly be subject to changes)
636    o ctrl: adding new control variables:
637      lwflux, lwdown, evap, snowprecip, apressure, runoff
638    
639    checkpoint58q_post
640    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
641      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
642      high_res_cube configuration by 4% on Columbia.
643    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
644      add (in global_with_exf/code) a version of EXF_INTERP_READ without
645      dynamical allocation (seems to work in multi-threaded).
646    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
647      single CPU io) so that TAF does not have to see EESUPPORT.h
648    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
649    
650    checkpoint58p_post
651    o obcs: stop if obcs is used with useCDscheme = .true.
652    o shelfice:
653     - fix a sign error so that no slip at shelfice interface works
654     - remove stop for combination non-hydrostatic code and shelfice. That does
655       not mean, that the results are correct, but at least they are numerically
656       stable
657    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
658    o added adjoint exch routined for all exch*3d* routines
659      and updated flow directives
660    
661    checkpoint58o_post
662    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
663      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
664    o change controling S/R for writing pickup file (new S/R do_write_pickup)
665      and clean-up reading/writing of pickup files.
666    o fix local version of read/write pickup (NH part) in rotating_tank/code
667    o simplify EXCH interface:
668     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
669     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
670    o added the regrid package
671    o shelfice:
672     - add a simple boundary layer scheme to reduce noise
673     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
674    
675    checkpoint58n_post
676    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
677       local variable (not in common block).
678    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
679      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
680      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
681        to work with SingleCpuIO.
682    o add "_d 0" to real constant of pkg/cfc subroutines ;
683       update exp. cfc_exemple & tutorial_cfc_offline output files.
684    o multi-threading and IO:
685      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
686        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
687      - barrier before and after reading.
688      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
689      - avoid using MDS_WRITELOCAL for LAND pkg output.
690      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
691        common-block variables ; Allows multi-threading with master-thread IO.
692    o change default MAX_NO_THREADS from 32 to 4 ;
693      and stop cleanly when MAX_NO_THREADS is too small.
694    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
695    
696    checkpoint58m_post
697    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
698       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
699    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
700       keep global_ocean.90x40x15 (for AD testing) with former secondary test
701       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
702    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
703        add MITgcm_tutorials (= code + all the tutorials)
704    o ecco, option to compute cost for total ssh (mean+anom)
705    o consistent with addition of ptracer and ssh in pkg/profiles
706    o profiles: adding ptracer and ssh
707    o testreport: change multi-test output-file name
708      (from output.txt.{name} to output.{name}.txt)
709    o profiles: now ok for mutli-tiles case
710    o seaice: add 4 parameters for different advection schemes for area,
711      (effective) seaice thickness, enthalphy, and snow height. Their default
712      is the standard parameter SEAICEadvScheme
713    o calc_gw:
714     - add cosFacU in zonal viscous flux (harmonic.visc.).
715     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
716       of tutorial_plume_on_slope.
717    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
718    o calc_gw: true flux-form, account for horizontal grid spacing.
719      update rotating_tank results, but not plume_on_slope (affected at
720      truncation level, 11 digits).
721    
722    checkpoint58l_post
723    o calc_gw:
724     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
725     - remove side-drag for now (need to fix it); update plume_on_slope results.
726     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
727    o commit code to make SST/SSS weights spatially variable
728      (based on either variable in-situ or variable initial T/S weights)
729    o pkg/ecco:
730      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
731        now based on horizontally varying weights wthetaLev, wsaltLev
732      * cost_averagesflags now returns year indices in addition to day, month
733      * sflux balance is performed on annual basis
734        (sflxumm, sfluxmm2, bal_sfluxmm)
735      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
736        including separate counting and multipliers
737    o pkg/rbcs
738      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
739    
740    checkpoint58k_post
741    o testreport:
742     - always build in dir. "build" (if not there, mkdir build instead of building
743       & running in input)
744     - run in dir run (if it exists), in build otherwise.
745     - call prepare_run (if input/prepare_run exists)
746     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
747    o pkg/exf modifications to interpolation and rotation routines for more
748       reasonable treatment of North Pole singularity: for tracers North Pole
749       value is set to northernmost zonal-mean value, for zonal velocity it is
750       set to zero, and for meridional velocity it is set to northernmost value.
751    o pkg/exf/exf_check_range.F
752     - add tile index to diagnostics and move stop statement to the very
753       end of the routine.
754    o pkg/diagnostics: (diagnostics_main_init.F)
755      define title of isomorphic variables according to the current config.
756    o pkg/thsice with pkg/seaice dynamics:
757    - fix domain of computation (interior only, required for exf) and do exchanges
758    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
759    o towards a standard way of dealing with multi-threading in MONITOR
760      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
761    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
762       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
763    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
764    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
765    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
766       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
767    o tracer advection:
768     - clean-up and simplify calc_common_factors.F
769     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
770       advection subroutine (but still not used within DST advection S/R)
771    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
772    
773    checkpoint58j_post
774    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
775      from file (collects calls previously in FORWARD_STEP)
776    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
777    o adjoint store dir. adjusted accordingly
778    o genmake2
779      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
780    
781    checkpoint58i_post
782    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
783      on wind stress (SEAICEstressFactor defaults to 1.)
784    o Total number of Timers is finite (<=40): comment out 2 non-essential one
785      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
786    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
787      on CS-grid: no longer loosing mass.
788    o exf & curvilinear-grid: no longer modify longitude xC & xG.
789  o pkg/ggl90: fix sloppy output and fix a bug  o pkg/ggl90: fix sloppy output and fix a bug
790  o pkg/seaice: added SEAICEuseEVPpickup parameter  o pkg/seaice: added SEAICEuseEVPpickup parameter
791    - Set to false in order to start EVP solver with    - Set to false in order to start EVP solver with
792      non-EVP pickup files when using SEAICEuseEVP      non-EVP pickup files when using SEAICEuseEVP
793      - fix sign error in diffusion in seaice_calc_rhs
794    
795  checkpoint58h_post  checkpoint58h_post
796  * Modifications for bottom topography control  * Modifications for bottom topography control

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