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revision 1.740 by heimbach, Fri Oct 27 05:19:42 2006 UTC revision 1.910 by mlosch, Wed Nov 14 16:01:11 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 pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
8    o lab_sea.hb87: modify the domain & update output.hb87.txt :
9      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
10      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
11      process. Fixed here by closing the domain at the Northern boundary.
12    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
13    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
14      a set of consecutive levels in/from a 3-D array.
15    o pkg/ptracers:
16      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
17      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
18    
19    checkpoint59j
20    o in pkgs: dic, obcs, offline, rbcs:
21      standard way to compute coeff. for time interpolation between 2 time reccords
22      which retains full precision (& make results less dependent on compiler).
23      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
24    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
25      packages instead of reading ice cover and wind speed separately
26    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
27     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
28      to allow to compile customized code before the update)
29    o cleaning-up:
30      - fix CPP instruction syntax in pkg/obcs
31      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
32        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
33      - fix some threads issue in IO parts.
34    o pkg/dic:
35      - add tons of "_d 0" (--> much better testreports !)
36       and then update outputs of tutorial_global_oce_biogeo
37    o pkg/mom_fluxform:
38      add a special version of momentum advection intended to conserve momentum
39      next to a bathymetry step or a coastline edge. (default = off = #undef)
40    o new read/write pickup version:
41      - for now, only implemented for main (mdsio) pickup file.
42      - write out only what is needed to restart; merge pickup_nh , pickup_ph
43        and main pickup together.
44      - read meta file; read only what is needed to restart; stop if a field
45        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
46        if it make sense (even if the restart is not perfect).
47      - if no meta file, assume that pickup to read corresponds exactly to
48        a pickup that would currently be written.
49      - read pickup written in the old format (until checkpoint59i) if it
50        recognizes an old meta file (no field-list).
51      - add a meta file in exp. which starts from a pickup: 2 cases:
52        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
53         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
54        b) a meta file describing the content of the associated pickup file
55         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
56    o pkg/mdsio & pkg/rw:
57      - new routine to read a meta file ; new set of routine to read
58        Multiple-fields file (with meta file).
59    o added open boundary conditions capability for seaice
60        HSNOW, HSALT, UICE, and VICE
61    
62    checkpoint59i
63    o adjoint:
64      * fix multiDimAdvection adjoint
65        (partial recomputation problem by TAF for fVerT(:,:,kDown)
66        and comlev1 size definition (maxpass vs. max. number of tracers)
67      * verification/global_ocean.90x45x15 adjoint now tests
68        NLFS and multiDimAdvection using DST3 (=30)
69      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
70    o pkg/kpp: add "_d 0" to real constant (if missing);
71      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
72      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
73    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
74      for internal parameters related to restart process (formerly from PARAMS.h)
75      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
76    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
77      as argument. (only atm2d & obcs write_pickup have not yet been updated)
78    o pkg/monitor:
79      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
80      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
81      - account for deep Atmosphere factor and density factor (anelastic)
82    o added open boundary conditions capability for seaice HEFF and AREA
83    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
84      thermodynamics
85      - requires a little reorganization, which affects the testreport results
86        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
87        so that now the conservative form is tested
88      - add a few comments
89    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
90    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
91    o add new diagnostics to seaice: advective, diffusive fluxes (only for
92      multidim-advection, for scheme 2 they are not filled) and transports,
93      thermodynamic growth rates
94    o change units of EmPmR (inside the code, + within coupling interface)
95      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
96      Affects results @ truncation level (cg2d match) and update output of
97       experiments: lab_sea(6), global_ocean.90x40x15(10),
98      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
99      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
100      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
101      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
102    
103    checkpoint59h
104    o pkg/exf:
105      - improve vectorization by moving if-statement out of loops in
106        exf_mapfields, exf_radiation
107      - exf_bulkformulae.F: introduce 2D fields and vectorize code
108    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
109    o testreport:
110      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
111        monitor & update offline_exf_seaice exp. output.
112      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
113    o pkg/seaice:
114      - bug fix in the evp solver: boundary conditions were affected be
115        masking of zMax/zMin (changes results)
116      - minor bug fix in boundary conditions in seaice_calc_strainrates
117        (changes results for no_slip)
118      - seaice_lsr.F: make interpolation of eta dependent on boundaries
119      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
120      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
121        stress formulation and no-slip boundary conditions
122    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
123      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
124    o pkg/seaice: a first HSALT time stepping equation has been checked in
125    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
126      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
127      without requiring DO-IF statements
128    o pkg/thsice:
129      use continuous power-law function for partition of energy between lateral
130      melting/freezing and thinning/thickening ; old code using step function
131      still available with #undef THSICE_FRACEN_POWERLAW
132      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
133    o testreport: change AD testing : check against results/output_adm.txt
134      using same scripts as for forward test.
135    
136    checkpoint59g
137    o adjoint testing: in preparation for changing testreport:
138      - output format: cost and grad written on separated lines
139      - ad output results in directory "results" (instead of "results_ad")
140    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
141    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
142    o pkg/ecco: allow user defined cost function contributions
143    o testreport:
144      Allow to choose (per experiment) the list of tested output variables
145       and the main variable (used to issue a pass/FAIL ) ;
146      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
147      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
148      Also modify printing of summary:
149       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
150       b) echo the list of tested variables in the individual summary.txt of
151          each experiment.
152    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
153      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
154      (but still depend on the tile decompostion of the domain).
155    o pkg/seaice: change a discretization detail to make the B-grid code
156      "more symmetric". This change is likely to remove all "ridges/leads" that
157      where quasi-aligned with the grid in B-grid solutions. It may also be
158      the solution to the stress coupling issues with the B-grid.
159    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
160      remove .cvsignore from input dir. (since testreport no longer run here).
161    o pkg/thsice:
162     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
163     - fix reshaping of sea-ice just after advection:
164       melt all the ice only if ice-volume is too small.
165     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
166       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
167     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
168    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
169      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
170    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
171      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
172      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
173      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
174      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
175      -> update output.txt
176    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
177     this affects truncation error: -> update output.txt of exp:
178      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
179      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
180    
181    checkpoint59f
182    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
183    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
184      a bounded range (in forward mode)
185    o pkg/ecco, ctrl, autodiff and mom_common:
186     internal parameter controls, completements of implementations
187    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
188    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
189      (not seem any difference in testing results).
190    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
191       at face corners.
192    o pkg/generic_advdiff:
193     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
194      loop range indices for computing vertical advection tendency
195      and do the calculation in the interior only (no overlap) ;
196      for now, only implemented for SOM advection (to save CPU time).
197     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
198    o exch2 adjoint
199      First set of changes:
200      - add exch2 hand-written adjoint templates
201      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
202        This will require cleanup in pkg/autodiff/*.F
203        (changed routines currently kept separate in verif. code/)
204      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
205        that used to hide exch2 or cubed-sphere specific code
206        (commented via 'cph-exch2')
207    o pkg/seaice
208      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
209    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
210       output of global_ocean.cs32x15.thsice .
211    
212    checkpoint59e
213    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
214      for B-grid vector (not yet tested) and C-grid vector (<- only used
215      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
216    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
217      (#ifdef ALLOW_SALT_PLUME)
218    o gather_2d/scatter_2d: removed halo regions
219    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
220      scheme and the corresponding test case (under front_relax dir). For now,
221      only available with Skew-flux form and not yet tested in realistic set-up.
222      adjoint: store directives updated, but gradient checks deteriorated,
223      so maybe GM/Redi adjoint is now broken.
224    o seaice adjoint
225      * add AREA, HEFF, HSNOW as control variable
226        (should not change lab_sea results)
227      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
228    o pkg/seaice:
229      * added computation of saltFlux in seaice_growth;
230        For time being, sea ice salinity is assumed constant
231        contribution of snow flooding to freshening of sea ice is neglected.
232        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
233        defaults to 0.0 in order to maintain backward compatibility.
234        Typical values for SEAICE_salinity are 4 to 10 g/kg.
235      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
236      * added SEAICE_availHeatFrac, which specifies fraction of surface level
237        heat content used to melt or grow ice
238      * commented out cap of HICE: it helps keep ice thinner
239      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
240      * applied OBCS T/S mask to HEFFM sea ice mask
241    
242    checkpoint59d
243    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
244     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
245     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
246    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
247     and change default value of parameter "GM_Small_Number";
248     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
249       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
250       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
251    o pkg/ecco: cost function when applying pkg/smooth to controls
252    o pkg/ctrl: add forcingPrecond run time parameter
253    o pkg/seaice:
254     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
255     - fix bug in metric terms of u-equation in LSR solver (implicit part),
256       changes verification/lab_sea
257     - rearrange implicit part of u-equation in LSR solver to make it easier to
258       read, understand, and debug. This causes changes at the truncation level.
259     - fix (serious) bug in the boundary conditions (sign error in the implicit
260       part) of the LSR solver. Changes all LSR results.
261     - fixed problem with HSNOW initialization to avoid thick snow when AREA
262       is initilized with small values - does not change lab_sea results.
263     - added HsnowFile initialization capability
264    o pkg/smooth: addition to model/src and pkg/ctrl so allow
265     initialization of pkg/smooth and application to control vector
266    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
267    o dependencies: pkg/profiles requires pkg/cal
268    o pkg/profiles:
269     - added option ALLOW_PROFILES_GENERICGRID
270         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
271         that interpolation information (grid points and coefficients) is provided
272         within the netcdf input files.
273         -> sample matlab scripts can be found in MITgcm_contrib/gael
274         that allow you to prepare netcdf input files.
275     - also modified: cleaner include statements, cleaner error print statements,
276       cleaner stops when error, and more tests of the netcdf input files consistency.
277    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
278    o pkg/seaice:
279     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
280       requires a new routine: seaice_diagnostics_fill.F
281     - make sure that seaice does not move if not forced (pressure replacement
282       method, Hibler and Ip, 1995), changes results
283     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
284     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
285       It is turned off by default (=-1.), because it changes the results.
286     - make it possible to read AREA from a file, too.
287    
288    checkpoint59c
289    o add S/R and diagnostics for oceanic mixed-layer depth
290    o move GMRedi call after all vertical mixing schemes (including KPP)
291    o pkg/thsice:
292     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
293      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
294    o pkg/obcs:
295     - bug fix for balance code
296    o pkg/seaice:
297      - allow values of SEAICE_elasticParm > 1
298      - add new parameter SEAICE_evpTauRelax as an alternative
299        to SEAICE_elasticParm
300      - make lsr boundary conditions free slip (by default), changes result
301      - add code for no slip boundary conditions for lsr
302      - set minimum of zeta to zero (and not 4e8) (changes results)
303      - add a cap on AREA after advecting AREA if seaice_growth is not called
304    o change calculation of Visbeck K:
305      - no longer depend on tapering scheme; instead, compute slope (limited
306        by GM_maxSlope). this is equivalent to what was comuted before with
307        clipping or linear tappering.
308      - fix vertical averaging (wrong by 1/2 level)
309      - leave the old version (but will not be maintained) within
310        #ifdef OLD_VISBECK_CALC / #endif
311      - update output of exp. ideal_2D_oce
312    o change error catch in calc_r_star to improve vectorization
313    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
314      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
315    o adjoint:
316      Re-organized adjoint checkpointing according to Matt Mazloff
317      (but with modifs/completions/cleanups)
318      Storing is now bundled into large arrays to optimized I/O
319      (and second step in cleanup of the_main_loop)
320    
321    checkpoint59b
322    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
323      - export/import (between ocean & coupler) fields needed for ocean DIC.
324    o pkg/seaice:
325      - get rid of three more exchanges seaice_calc_viscosities (required
326        different loop boundaries in seaice_lsr and seaice_ocean_stress)
327      - bug fix in seaice_ocean_stress (update of lab_sea required)
328      - reduce loop boundaries to necessary minimum also in seaice_evp
329      - go back to the old way of computing deltaC/Z as the adjoint likes that
330        better
331    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
332      passive tracer to an Age Tracer) + update output.txt
333    o pkg/exf:
334      - implement A-grid / C-grid selection for wind-stress input files.
335      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
336      for now, in exf_bulk_largeyeager04.F only :
337      - change implementation for case where windspeed + 2. components wind-stress
338        are read-in. AND use rhoConstFresh to convert evap.
339    o pkg/seaice:
340      - use correct EXCH_UV for wind-forcing (on A-grid).
341      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
342        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
343    o pkg/exf:
344      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
345      EXF_INTERPOLATION:
346      - merge global_with_exf/code version of exf_interp_read.F
347        to the main code ;
348      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
349        reading the file ; Important: This options needs to be defined to recover
350        previous code.
351        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
352      - no longer loose real*8 precision along the way when using exf_iprec=64.
353    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
354      - change discretisation of evp-solver in order to avoid another exchange
355        (changes lab_sea) and clean up a little
356      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
357        help the adjoint (this also changes the results slightly)
358      - add a few "_d 0" where they had been missing in seaice_evp.F
359      - cleaning up: remove unused seaice_calc_rhs.F
360    o pkg/exf: some cleaning-up:
361      - change various "constants" into runtime parameters
362      - cleaned-up Large&Yeager04 routine which should eventually
363        replace exf_bulkformulae.F (changed names of S/R and CPP)
364        and merged various ALLOW_ATM_WIND options
365     only used with thsice pkg (in thsice_get_exf.F):
366      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
367        which are used when useStabilityFct_overIce=TRUE (= the default)
368      - change default values of ice & snow emissivity and scale downward LW
369        by ice & snow emissivity.
370    o pkg/thsice:
371     fix few little problems, in thsice_calc_thickn.F:
372      - growth vertically (and not laterally) if iceFrac == iceMaskMax
373      - melt only laterally if hIce < hThinIce (as the comments say)
374      and in thsice_extend.F:
375      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
376      - start to form ice as soon as the minimum ice-volume is reachable.
377     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
378      and cpl_aim+ocn
379    o pkg/kpp
380     - move computation of surface related input fields to KPP into a new
381       subroutine kpp_forcing_surf.F
382     - remove wrong (within bi,bj loops) EXCH calls.
383     - little cleaning (add argument myThid in last position, cvs header ...)
384     - for now, fix conservation problem by exchanging KPPviscAz (may not
385       be the best fix)
386    o pkg/seaice
387     - check for inconsistent evp parameter/cpp-flag combination
388     - remove leftover errIO flat for obsolete name list error handling
389    o OpenAD
390     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
391    
392    checkpoint59a
393    o pkg/seaice: some parameter clarifications and a little bit of clean up
394    o pkg/thsice: rename run-time parameters:
395       himin       -> hIceMin
396       himin0      -> hThinIce
397       hihig       -> hThickIce
398       i0          -> i0swFrac
399       transCoef   -> bMeltCoef
400       frac_energy -> fracMelting
401      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
402       with default values (for now) that do not change the results.
403      remove old version of thsice vars advection in pkg/seaice.
404    o in FFIELDS.h:
405      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
406      - make pLoad & sIceLoad always available (but still only used if
407         ATMOSPHERIC_LOADING is #define).
408    o pkg/kpp: replaced _KPP_RL with _RL
409    o bug fixes for vertical diffusivity computations when both KPP and
410        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
411        are no longer updating the vertical diffusivity array
412        (passed as argument) but are (re-) setting those arrays.
413    o pkg/seaice: fix bug in evp solver, while doing that
414      - change (improve?) discretization of stress computations for both
415        cgrid-lsr and evp solver
416      - add a new routine to compute strain rates
417      - the above changes lab_sea results
418      - add no slip conditions for evp solver (off by default), lsr-version
419        may follow
420      - fix exchange for shear at Z-points (does not change lab_sea)
421      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
422        (to force the user to pick a time step since there is not "safe" way
423        of choosing it)
424      - add principal stress diagnostics
425      - rearrange fields for evp a little to avoid having to call a: too many
426        exchanges and b: exchanges for stress trensor components which we do
427        not have.
428      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
429        of evp, complete rewrite for lsr case (latter is does not yet work
430        in all cases)
431    o pkg/kpp: add code to have mixing in shelf ice caverns
432      - add myThid to all kpp routines (long overdue)
433    
434    checkpoint59
435    o pkg/exf:
436      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
437        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
438      - move exf header files from lower_case.h to UPPER_CASE.h ;
439        add missing cvs Header & Name
440      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
441      - add namelist param. selectStressGridPosition, exf_monFreq
442      - retire many _CLIM routines, and remove data.exf_clim
443        + params moved to data.exf
444        + climsst, climsss now handled by exf_set_gen, i.e.
445          climss?period=0 refers to constant field,
446          climss?period=-12 to monthly forcing
447      - split up namelists in data.exf
448    o pkg/seaice:
449      - remove seaice_exch and seaice_exch_uv
450      - remove superfluous exchange of theta
451      - add myThid to seaice_budget_ocean/ice
452      - add new interface for atmospheric wind forcing (C-grid only)
453        + new routine
454        + two new field (taux, tauy for stress over ice)
455        + removed one global field (DAIRN) for C-grid case only
456    o pkg/thsise
457      - 2nd set of modifs for thsice adjoint in conjunction with exf
458    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
459    
460    checkpoint58y_post
461    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
462      vertical diffusivity, similar to that in MOM4; turned on using
463      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
464      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
465    o Added capability for 3D specification of background vertical diffusion
466      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
467      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
468      "data" file that contains the 3D vertical diffusivity coefficients.
469    o ice dynamics (pkg/seaice) with thsice thermodynamics:
470      - add code within pkg thsice to advect & diffuse sea-ice fields
471      similar to (and will replace) what has been added in  seaice_advdiff.F,
472      but: - conserving Mass, Heat & Salt.
473           - better when using non-linear advection scheme (not yet fully tested)
474           - can also be used in atmospheric set-up (for now, only the diffusion).
475    
476    checkpoint58x_post
477    o IO option for global-file compact format:
478      - add options when generating topology (utils/exch2/matlab-topology-generator)
479      - add I/O capability (pkg/mdsio).
480      - adapt utils/matlab/rdmds.m to read this format.
481      for now long-line format not yet supported by pkg/mdsio (& exch2).
482    o shelfice: add a few diagnostics
483    
484    checkpoint58w_post
485    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
486      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
487      (and replace horiVertRatio in NH code).
488      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
489                         and tutorial_plume_on_slope (sensitive to truncation)
490    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
491      directly to drive seaice model (C-grid only)
492    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
493     - reintroduce computation of wind from stress,
494     - compute tau (in exf_bulkformulae.F) from windstress averaged to
495       mass points to avoid tau = 0
496     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
497    o rdmnc.m: make it work with "global" files created with gluemnc
498    o rdmnc.m : some improvements in dealing with singleton dimension
499      (tested on all testreport mnc output files).
500    o genmake2: disable pkg/profiles if netcdf test fails.
501    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
502    o move call to cal_readparms up to make calendar parameters/variable available
503      to all packages
504    
505    checkpoint58v_post
506    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
507      useDynP_inEos_Zc tested.
508    o pkg/exf: changes to properly interpolate/mask/scale initial fields
509    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
510      and portions thereof.  See read_cs.txt for description and examples.
511    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
512      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
513      following the great-circle arc between those 2 points.
514    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
515      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
516    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
517     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
518     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
519     - still needs work (not working with some options ; efficiency to improve)
520       and serious testing.
521     - use this scheme for temperature & salinity in 2 advection test exp.:
522       advect_xy & advect_xz, respectively.
523    
524    checkpoint58u_post
525    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
526    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
527    o testreport: add option "-skipdir" to skip some test.
528    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
529      momentum calculation.
530    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
531    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
532      remove checkpoint.F and the_correction_step.F (no longer used);
533      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
534    o add option (linFSConserveTr) to correct for tracer source/sink due to
535      Linear Free surface
536    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
537    o pkg/thsice: fix reading mnc-pickups
538    
539    checkpoint58t_post
540    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
541    o pkg/mdsio:
542     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
543       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
544       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
545     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
546     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
547       either MDS_READ_FIELD or MDS_WRITE_FIELD )
548     - new S/R (to replace MDSWRITEMETA), which allows to write more
549       informations (variable names, time ...) to meta files.
550     - modify rdmds.m to give back the meta file content.
551    o pkg/diagnostics: change vertical interpolation to be safer, and more
552       flexible (define p-levels to interpolate to in data.diagnostics);
553      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
554       diagnostic pointer.
555    o pkg/seaice: more cleaning up of seaice_growth, added many comments
556    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
557    o fix multi-category seaice:
558     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
559       SEAICE_MULTICATEGORY
560     - fix short wave heat flux
561    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
562       and allow to use EVP solver. Change forward lab_sea: test both EVP
563       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
564    o Initial check-in of lab_sea adjoint
565      (very similar to natl_box_adjoint/code_seaice)
566      * used C-grid and EVP solver
567      * used KPP, GM/Redi
568      * uses inAdExact=.TRUE.
569      * gradient checks fail for both ADM and TLM
570        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
571        f.d. gradients actually seem more problematic than ADM, TLM gradients;
572        issue is related to forward mismatch between g77 an ifort
573    o pkg/seaice: overhaul of thermodynamics
574     - growth.F and groatb.F are replaced by new routine seaice_growth.F
575     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
576     - move a few global fields out of SEAICE.h into seaice_growth.F and
577       make them 2D (FICE/QNETO/ ...)
578     - remove FO (it is the same as QNETO)
579     - introduce a few local fields to avoid modifying external fields such
580       as atemp, etc.
581    
582    checkpoint58s_post
583    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
584      changed exf_set_gen.F so that
585        genperiod=0 means input file is one time-constant field and
586        genperiod=-12 means input file contains 12 monthly means
587    o CG2D: use pre-computed solver main-diagonal (stored in common block);
588      this affects truncation error ; generate new output file for exp. which
589      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
590        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
591        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
592        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
593        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
594        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
595    o start implementation of deep-atmosphere and anelastic formulation
596    o verification: remove 2nd copy of input files and use script "prepare_run"
597      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
598    o mom_common/vecinv/fluxform: fix a few initialisation isssues
599    o profiles: fix for multithreaded case
600    
601    o diagnostics: rename few diags:
602      s/'PRESSURE'/'RCENTER '/g
603      s/'TICE    '/'oceFreez'/g
604      s/'TAUX    '/'oceTAUX '/g
605      s/'TAUY    '/'oceTAUY '/g
606      s/'SWFLUX  '/'oceQsw  '/g
607      s/DIFx/DFxE/g
608      s/DIFy/DFyE/g
609      and add few ocean-forcing diagnostics:
610      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
611    o modifications to pkg/seaice/growth.F and budget.F, which change results of
612      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
613      as actual snow thickness.  It now refers everywhere to effective snow
614      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
615    
616    checkpoint58r_post
617    o modifications to pkg/seaice/growth.F, which change results of
618      lab_sea experiment: fixes pertain to melting snow over open water, to
619      masking EVAP under sea ice, and to using the correct AREA variable for
620      computations of EVAP, PRECIP, HSNOW, and GHEFF
621    o add ability to read bathy, salt, and theta using MNC (off by def)
622    o add flooding algorithm and advection of HSNOW for pkg/seaice;
623      both are turned off by default and do no change any results
624    o seaice advection with pkg/thsice: a step toward the use of non-linear
625      advection scheme, but #ifdef or commented out for now (requires more EXCH).
626  o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens  o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
627    (identical results) and the standard version of EXTERNAL_FIELDS_LOAD    (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
628    in natl_box (affects results @ truncation level: update output.txt)    in natl_box (affects results @ truncation level: update output.txt)

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