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revision 1.757 by mlosch, Wed Dec 20 12:27:02 2006 UTC revision 1.966 by jmc, Fri Mar 7 19:25:48 2008 UTC
# Line 4  $Name$ Line 4  $Name$
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    checkpoint59o
8    o dome/code/obcs_calc.F: avoid division by zero (detected using gfortran).
9    o change the loop ordering in most gad_*_adv_x.F to improve vectorization:
10      move a few statemens out the main loop into separate loops
11    o pkg/shelfice:
12      - sort out freshwater flux; convert freshwater fluxes to mass fluxes
13        (kg/m^2/s), does not break tests, because in verification/isomip,
14        rhoConstFresh=rhoConst (by accident)
15      - rearrange computation of tLoc, sLoc, pLoc to make code more efficient
16      - move S/R find_rho_scalar, pkg/ecco/sw_ptmp.F, pkg/ecco/sw_adtg.F into
17        new file model/src/seawater.F, so that they are available for all pkgs.
18      - convert potential temperature into in-situ temperature. This changes the
19        isomip tests => update tests
20    o add a flag writePickupAtEnd (default=true) to be able to suppress
21      writing a pickup at the last timestep
22    o tools/mpack-1.6 :
23      - disable automake (not working) and autoconf (not needed).
24      - update to version 1.6.4 which fix MD5 code on some 64 bits platforms
25        also cleaner with much less compilation warnings.
26    o pkg/profiles:
27      rename profiles_interp_mean_genericgrid as profiles_interp_mean_gg
28      (for "less than 32 characters name" compiler requirement)
29    o pkg/obcs and pkg/exf: added capability to specify seaice open boundary
30      conditions that have a different sampling frequency than S/T/U/V obcs
31    o pkg/diagnostics (stats-diags):
32      - fix global Min/Max in case 1 processor get only empty tiles
33    o genmake2: replace (4 times)
34         make genmake_tc_1.o >> genmake_warnings 2>&1
35      with
36         COMM="$CC $CFLAGS -c genmake_tc_1.c"
37         echo $COMM >> genmake_warnings
38         $COMM >> genmake_warnings 2>&1
39      to make genmake2 always see the value of CC as specified in the optfile.
40    o generic_advdiff: - prather advection scheme (SOM) coded for CS-grid.
41      - add diagnostics for 1srt & 2nd Order moments and sub-grid variance.
42      - modify verification advect_cs test to test SOM-advection on CS-grid.
43    o pkg/ctrl:
44      - Rewrite of ctrl_map_ini_ecco.F,
45        introducing a generic routine (ctrl_map_ini_gen.F).
46      - Modification of ctrl_bound/adctrl_bound handling control vector bounds.
47    
48    checkpoint59n
49    o pkg/diagnostics: for large number of diagnostics, store diagnostic mate
50      number in dedicate array "hdiag":
51      - new version of S/R DIAGNOSTICS_ADD2LIST : DIAGNOSTICS_ADDTOLIST
52        with 1 more argument (mate number); modify old version DIAGNOSTICS_ADD2LIST.
53      - many small changes (integer format) for large number of diagnostics
54      - start to use DIAGNOSTICS_ADDTOLIST (necessary for diagnostics with
55        a counter mate) in pkg diagnostics, ptracers, thsice & aim_v23.
56    o add parameter rotateGrid and Euler angles EulerPhi/Theta/Psi. For
57      usingSphericalGrid, this allows to define the rotated grid coordinates
58      via phiMin/thetaMin/dxSpacing/dySpacing, etc., but then re-compute the
59      geographical coordinates according to the inverse of the rotation defined
60      by the Euler angles, so that Coriolis parameter and online-interpolation by
61      exf works with the geographical coordinates on XC/YC/XG/YG.
62      Naturally, this feature does not work with all packages, so some
63      combinations are prohibited in config_summary (flt, flt_zonal, ecco,
64      profiles), because there the coordinates are assumed to be regular
65      spherical grid coordinates.
66    o pkg/gmredi,ctrl,ecco,autodiff,grdchk and model/src,inc:
67      - introduce isopycnal diffusion coefficient control.
68    o tools/adjoint_options:
69      - additional control vector components.
70    o pkg/mnc: have mnc create marginally meaning full coordinate variables
71      (that is the grid indices) if usingCurvilinearGrid and NOT EXCH2
72    o pkg/mypackage:
73      - add example of read/write pickup for state-var ;
74      - add entry points to the main code for state-vars diags & write-pickup.
75    o pkg/exf: rewrite of exf_getffieldrec.F to properly deal with year
76      transitions for useExfYearlyFields
77      - add new subroutine that determines the file to read from for
78        use*YearlyFields = .TRUE. and .FALSE.
79      - add a verification experiment to global_with_exf that tests
80        useExfYearlyFields with USE_EXF_INTERPOLATION defined
81    o pkg/obcs/exf: add useOBCSYearlyFields (=.FALSE.) to obcs with exf in
82      analogy to useExfYearlyFields; rearrange obcs_prescribe_read: two new
83      subroutines (which could be generated from a template, because they are
84      almost identical), for now they are included in obcs_prescribe_read.F for
85      simplicity
86    o pkg/exf:
87      - add a little more diagnostic to exf_interp_read (in analogy to
88        mds_read_field, can be turned off with debugLevel < debugLevA=1)
89      - improve vectorizability of exf_interp for TARGET_NEC_SX, makes code
90        ugly but fast by unrolling short inner loops, inserting a unroll=8
91        directive in routine lagran, and splitting a loop and making do while the
92        outermost loop (the latter requires the intoduction of index arrays)
93    o pkg/obcs: replace obcs_apply_area/heff/hsalt/hsnow with obcs_apply_seaice
94    o pkg/seaice: moved DIFFERENT_MULTIPLE from seaice_model to seaice_dynsolver
95      http://forge.csail.mit.edu/pipermail/mitgcm-devel/2008-January/003173.html
96    o verification/seaice_obcs: updated for restart test and latest options
97    o pkg/seaice: add a new flag SEAICEuseTEM to use a slightly different
98      ice rheology (so-called truncated ellipse, that gets rid of tensile stress);
99      for now this is only available for the C-grid code and also within
100      #ifdef SEAICE_ALLOW_TEM, because this option may slow down the EVP code
101    
102    checkpoint59m
103    o pkg/seaice: use different time constant for melting (SEAICE_gamma_t)
104      and freezing (SEAICE_gamma_t_frz) ice due to mixed layer temperature
105    o gad_som : fix flux output (& diagnostics) to have same units as other  
106      advection scheme fluxes (was previously multiplied by deltaT).  
107    o added verification/seaice_obcs both to test seaice open boundaries
108      and to provide an example matlab scrpt for generating them
109    o added verification/lab_sea/input.salt_plume for testing pkg/salt_plume
110    o pkg/salt_plume: clean up salt_plume_frac.F to
111      remove redundancy in PlumeMethod 1 and 4
112    o pkg/kpp: added saltplume diagnostics
113    o pkg/obcs and pkg/seaice:
114      - do not set uice and vice to zero when OB*icefile are unspecified
115      - OBCS_SEAICE_AVOID_CONVERGENCE is undefined by default
116      - moved seaice tracer obcs after call to seaice_growth
117    o pkg/salt_plume: added various options for salt plume depth
118      criterion and for vertical distribution of the salt
119    
120    checkpoint59l
121    o pkg/ptracers: new version of ptracers pickup:
122      read meta file and write only fields which are needed to restart.
123      ( same logic as main pickup file ; also using pickupStrictlyMatch )
124    o pkg/seaice:
125      - add timescale for melting due to warm mixed layer as a means of
126        setting SEAICE_availHeatFrac more conveniently
127      - add a CPP-flag/runtime parameter check for flooding algorithm
128      - reformulated availHeat in seaice_growth.F to be independent of AREA
129    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
130      unit changes
131    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
132    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
133      SX vector computer.
134    o pkg/seaice:
135      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
136        seaice forcing fields can now be read only through pkg/exf
137      - removed some unused halos
138    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
139    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
140      or U/VICE from U/VWIND before computing U/VSTRESS
141    
142    checkpoint59k
143    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
144      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
145    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
146      all experiments pass when compile with un-initialised var. checking option.
147    o added pkg/salt_plume
148    o script to test restart (for now, in MITgcm_contrib/jmc_script)
149    o pkg/seaice: new read/write pickup version.
150      read meta file and write only fields which are needed to restart.
151      ( same logic as main pickup file ; also using pickupStrictlyMatch )
152    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
153    o lab_sea.hb87: modify the domain & update output.hb87.txt :
154      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
155      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
156      process. Fixed here by closing the domain at the Northern boundary.
157    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
158    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
159      a set of consecutive levels in/from a 3-D array.
160    o pkg/ptracers:
161      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
162      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
163    
164    checkpoint59j
165    o in pkgs: dic, obcs, offline, rbcs:
166      standard way to compute coeff. for time interpolation between 2 time reccords
167      which retains full precision (& make results less dependent on compiler).
168      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
169    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
170      packages instead of reading ice cover and wind speed separately
171    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
172     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
173      to allow to compile customized code before the update)
174    o cleaning-up:
175      - fix CPP instruction syntax in pkg/obcs
176      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
177        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
178      - fix some threads issue in IO parts.
179    o pkg/dic:
180      - add tons of "_d 0" (--> much better testreports !)
181       and then update outputs of tutorial_global_oce_biogeo
182    o pkg/mom_fluxform:
183      add a special version of momentum advection intended to conserve momentum
184      next to a bathymetry step or a coastline edge. (default = off = #undef)
185    o new read/write pickup version:
186      - for now, only implemented for main (mdsio) pickup file.
187      - write out only what is needed to restart; merge pickup_nh , pickup_ph
188        and main pickup together.
189      - read meta file; read only what is needed to restart; stop if a field
190        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
191        if it make sense (even if the restart is not perfect).
192      - if no meta file, assume that pickup to read corresponds exactly to
193        a pickup that would currently be written.
194      - read pickup written in the old format (until checkpoint59i) if it
195        recognizes an old meta file (no field-list).
196      - add a meta file in exp. which starts from a pickup: 2 cases:
197        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
198         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
199        b) a meta file describing the content of the associated pickup file
200         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
201    o pkg/mdsio & pkg/rw:
202      - new routine to read a meta file ; new set of routine to read
203        Multiple-fields file (with meta file).
204    o added open boundary conditions capability for seaice
205        HSNOW, HSALT, UICE, and VICE
206    
207    checkpoint59i
208    o adjoint:
209      * fix multiDimAdvection adjoint
210        (partial recomputation problem by TAF for fVerT(:,:,kDown)
211        and comlev1 size definition (maxpass vs. max. number of tracers)
212      * verification/global_ocean.90x45x15 adjoint now tests
213        NLFS and multiDimAdvection using DST3 (=30)
214      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
215    o pkg/kpp: add "_d 0" to real constant (if missing);
216      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
217      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
218    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
219      for internal parameters related to restart process (formerly from PARAMS.h)
220      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
221    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
222      as argument. (only atm2d & obcs write_pickup have not yet been updated)
223    o pkg/monitor:
224      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
225      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
226      - account for deep Atmosphere factor and density factor (anelastic)
227    o added open boundary conditions capability for seaice HEFF and AREA
228    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
229      thermodynamics
230      - requires a little reorganization, which affects the testreport results
231        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
232        so that now the conservative form is tested
233      - add a few comments
234    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
235    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
236    o add new diagnostics to seaice: advective, diffusive fluxes (only for
237      multidim-advection, for scheme 2 they are not filled) and transports,
238      thermodynamic growth rates
239    o change units of EmPmR (inside the code, + within coupling interface)
240      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
241      Affects results @ truncation level (cg2d match) and update output of
242       experiments: lab_sea(6), global_ocean.90x40x15(10),
243      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
244      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
245      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
246      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
247    
248    checkpoint59h
249    o pkg/exf:
250      - improve vectorization by moving if-statement out of loops in
251        exf_mapfields, exf_radiation
252      - exf_bulkformulae.F: introduce 2D fields and vectorize code
253    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
254    o testreport:
255      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
256        monitor & update offline_exf_seaice exp. output.
257      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
258    o pkg/seaice:
259      - bug fix in the evp solver: boundary conditions were affected be
260        masking of zMax/zMin (changes results)
261      - minor bug fix in boundary conditions in seaice_calc_strainrates
262        (changes results for no_slip)
263      - seaice_lsr.F: make interpolation of eta dependent on boundaries
264      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
265      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
266        stress formulation and no-slip boundary conditions
267    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
268      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
269    o pkg/seaice: a first HSALT time stepping equation has been checked in
270    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
271      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
272      without requiring DO-IF statements
273    o pkg/thsice:
274      use continuous power-law function for partition of energy between lateral
275      melting/freezing and thinning/thickening ; old code using step function
276      still available with #undef THSICE_FRACEN_POWERLAW
277      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
278    o testreport: change AD testing : check against results/output_adm.txt
279      using same scripts as for forward test.
280    
281    checkpoint59g
282    o adjoint testing: in preparation for changing testreport:
283      - output format: cost and grad written on separated lines
284      - ad output results in directory "results" (instead of "results_ad")
285    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
286    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
287    o pkg/ecco: allow user defined cost function contributions
288    o testreport:
289      Allow to choose (per experiment) the list of tested output variables
290       and the main variable (used to issue a pass/FAIL ) ;
291      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
292      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
293      Also modify printing of summary:
294       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
295       b) echo the list of tested variables in the individual summary.txt of
296          each experiment.
297    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
298      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
299      (but still depend on the tile decompostion of the domain).
300    o pkg/seaice: change a discretization detail to make the B-grid code
301      "more symmetric". This change is likely to remove all "ridges/leads" that
302      where quasi-aligned with the grid in B-grid solutions. It may also be
303      the solution to the stress coupling issues with the B-grid.
304    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
305      remove .cvsignore from input dir. (since testreport no longer run here).
306    o pkg/thsice:
307     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
308     - fix reshaping of sea-ice just after advection:
309       melt all the ice only if ice-volume is too small.
310     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
311       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
312     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
313    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
314      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
315    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
316      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
317      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
318      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
319      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
320      -> update output.txt
321    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
322     this affects truncation error: -> update output.txt of exp:
323      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
324      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
325    
326    checkpoint59f
327    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
328    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
329      a bounded range (in forward mode)
330    o pkg/ecco, ctrl, autodiff and mom_common:
331     internal parameter controls, completements of implementations
332    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
333    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
334      (not seem any difference in testing results).
335    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
336       at face corners.
337    o pkg/generic_advdiff:
338     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
339      loop range indices for computing vertical advection tendency
340      and do the calculation in the interior only (no overlap) ;
341      for now, only implemented for SOM advection (to save CPU time).
342     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
343    o exch2 adjoint
344      First set of changes:
345      - add exch2 hand-written adjoint templates
346      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
347        This will require cleanup in pkg/autodiff/*.F
348        (changed routines currently kept separate in verif. code/)
349      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
350        that used to hide exch2 or cubed-sphere specific code
351        (commented via 'cph-exch2')
352    o pkg/seaice
353      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
354    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
355       output of global_ocean.cs32x15.thsice .
356    
357    checkpoint59e
358    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
359      for B-grid vector (not yet tested) and C-grid vector (<- only used
360      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
361    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
362      (#ifdef ALLOW_SALT_PLUME)
363    o gather_2d/scatter_2d: removed halo regions
364    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
365      scheme and the corresponding test case (under front_relax dir). For now,
366      only available with Skew-flux form and not yet tested in realistic set-up.
367      adjoint: store directives updated, but gradient checks deteriorated,
368      so maybe GM/Redi adjoint is now broken.
369    o seaice adjoint
370      * add AREA, HEFF, HSNOW as control variable
371        (should not change lab_sea results)
372      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
373    o pkg/seaice:
374      * added computation of saltFlux in seaice_growth;
375        For time being, sea ice salinity is assumed constant
376        contribution of snow flooding to freshening of sea ice is neglected.
377        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
378        defaults to 0.0 in order to maintain backward compatibility.
379        Typical values for SEAICE_salinity are 4 to 10 g/kg.
380      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
381      * added SEAICE_availHeatFrac, which specifies fraction of surface level
382        heat content used to melt or grow ice
383      * commented out cap of HICE: it helps keep ice thinner
384      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
385      * applied OBCS T/S mask to HEFFM sea ice mask
386    
387    checkpoint59d
388    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
389     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
390     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
391    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
392     and change default value of parameter "GM_Small_Number";
393     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
394       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
395       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
396    o pkg/ecco: cost function when applying pkg/smooth to controls
397    o pkg/ctrl: add forcingPrecond run time parameter
398    o pkg/seaice:
399     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
400     - fix bug in metric terms of u-equation in LSR solver (implicit part),
401       changes verification/lab_sea
402     - rearrange implicit part of u-equation in LSR solver to make it easier to
403       read, understand, and debug. This causes changes at the truncation level.
404     - fix (serious) bug in the boundary conditions (sign error in the implicit
405       part) of the LSR solver. Changes all LSR results.
406     - fixed problem with HSNOW initialization to avoid thick snow when AREA
407       is initilized with small values - does not change lab_sea results.
408     - added HsnowFile initialization capability
409    o pkg/smooth: addition to model/src and pkg/ctrl so allow
410     initialization of pkg/smooth and application to control vector
411    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
412    o dependencies: pkg/profiles requires pkg/cal
413    o pkg/profiles:
414     - added option ALLOW_PROFILES_GENERICGRID
415         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
416         that interpolation information (grid points and coefficients) is provided
417         within the netcdf input files.
418         -> sample matlab scripts can be found in MITgcm_contrib/gael
419         that allow you to prepare netcdf input files.
420     - also modified: cleaner include statements, cleaner error print statements,
421       cleaner stops when error, and more tests of the netcdf input files consistency.
422    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
423    o pkg/seaice:
424     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
425       requires a new routine: seaice_diagnostics_fill.F
426     - make sure that seaice does not move if not forced (pressure replacement
427       method, Hibler and Ip, 1995), changes results
428     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
429     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
430       It is turned off by default (=-1.), because it changes the results.
431     - make it possible to read AREA from a file, too.
432    
433    checkpoint59c
434    o add S/R and diagnostics for oceanic mixed-layer depth
435    o move GMRedi call after all vertical mixing schemes (including KPP)
436    o pkg/thsice:
437     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
438      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
439    o pkg/obcs:
440     - bug fix for balance code
441    o pkg/seaice:
442      - allow values of SEAICE_elasticParm > 1
443      - add new parameter SEAICE_evpTauRelax as an alternative
444        to SEAICE_elasticParm
445      - make lsr boundary conditions free slip (by default), changes result
446      - add code for no slip boundary conditions for lsr
447      - set minimum of zeta to zero (and not 4e8) (changes results)
448      - add a cap on AREA after advecting AREA if seaice_growth is not called
449    o change calculation of Visbeck K:
450      - no longer depend on tapering scheme; instead, compute slope (limited
451        by GM_maxSlope). this is equivalent to what was comuted before with
452        clipping or linear tappering.
453      - fix vertical averaging (wrong by 1/2 level)
454      - leave the old version (but will not be maintained) within
455        #ifdef OLD_VISBECK_CALC / #endif
456      - update output of exp. ideal_2D_oce
457    o change error catch in calc_r_star to improve vectorization
458    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
459      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
460    o adjoint:
461      Re-organized adjoint checkpointing according to Matt Mazloff
462      (but with modifs/completions/cleanups)
463      Storing is now bundled into large arrays to optimized I/O
464      (and second step in cleanup of the_main_loop)
465    
466    checkpoint59b
467    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
468      - export/import (between ocean & coupler) fields needed for ocean DIC.
469    o pkg/seaice:
470      - get rid of three more exchanges seaice_calc_viscosities (required
471        different loop boundaries in seaice_lsr and seaice_ocean_stress)
472      - bug fix in seaice_ocean_stress (update of lab_sea required)
473      - reduce loop boundaries to necessary minimum also in seaice_evp
474      - go back to the old way of computing deltaC/Z as the adjoint likes that
475        better
476    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
477      passive tracer to an Age Tracer) + update output.txt
478    o pkg/exf:
479      - implement A-grid / C-grid selection for wind-stress input files.
480      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
481      for now, in exf_bulk_largeyeager04.F only :
482      - change implementation for case where windspeed + 2. components wind-stress
483        are read-in. AND use rhoConstFresh to convert evap.
484    o pkg/seaice:
485      - use correct EXCH_UV for wind-forcing (on A-grid).
486      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
487        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
488    o pkg/exf:
489      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
490      EXF_INTERPOLATION:
491      - merge global_with_exf/code version of exf_interp_read.F
492        to the main code ;
493      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
494        reading the file ; Important: This options needs to be defined to recover
495        previous code.
496        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
497      - no longer loose real*8 precision along the way when using exf_iprec=64.
498    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
499      - change discretisation of evp-solver in order to avoid another exchange
500        (changes lab_sea) and clean up a little
501      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
502        help the adjoint (this also changes the results slightly)
503      - add a few "_d 0" where they had been missing in seaice_evp.F
504      - cleaning up: remove unused seaice_calc_rhs.F
505    o pkg/exf: some cleaning-up:
506      - change various "constants" into runtime parameters
507      - cleaned-up Large&Yeager04 routine which should eventually
508        replace exf_bulkformulae.F (changed names of S/R and CPP)
509        and merged various ALLOW_ATM_WIND options
510     only used with thsice pkg (in thsice_get_exf.F):
511      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
512        which are used when useStabilityFct_overIce=TRUE (= the default)
513      - change default values of ice & snow emissivity and scale downward LW
514        by ice & snow emissivity.
515    o pkg/thsice:
516     fix few little problems, in thsice_calc_thickn.F:
517      - growth vertically (and not laterally) if iceFrac == iceMaskMax
518      - melt only laterally if hIce < hThinIce (as the comments say)
519      and in thsice_extend.F:
520      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
521      - start to form ice as soon as the minimum ice-volume is reachable.
522     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
523      and cpl_aim+ocn
524    o pkg/kpp
525     - move computation of surface related input fields to KPP into a new
526       subroutine kpp_forcing_surf.F
527     - remove wrong (within bi,bj loops) EXCH calls.
528     - little cleaning (add argument myThid in last position, cvs header ...)
529     - for now, fix conservation problem by exchanging KPPviscAz (may not
530       be the best fix)
531    o pkg/seaice
532     - check for inconsistent evp parameter/cpp-flag combination
533     - remove leftover errIO flat for obsolete name list error handling
534    o OpenAD
535     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
536    
537    checkpoint59a
538    o pkg/seaice: some parameter clarifications and a little bit of clean up
539    o pkg/thsice: rename run-time parameters:
540       himin       -> hIceMin
541       himin0      -> hThinIce
542       hihig       -> hThickIce
543       i0          -> i0swFrac
544       transCoef   -> bMeltCoef
545       frac_energy -> fracMelting
546      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
547       with default values (for now) that do not change the results.
548      remove old version of thsice vars advection in pkg/seaice.
549    o in FFIELDS.h:
550      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
551      - make pLoad & sIceLoad always available (but still only used if
552         ATMOSPHERIC_LOADING is #define).
553    o pkg/kpp: replaced _KPP_RL with _RL
554    o bug fixes for vertical diffusivity computations when both KPP and
555        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
556        are no longer updating the vertical diffusivity array
557        (passed as argument) but are (re-) setting those arrays.
558    o pkg/seaice: fix bug in evp solver, while doing that
559      - change (improve?) discretization of stress computations for both
560        cgrid-lsr and evp solver
561      - add a new routine to compute strain rates
562      - the above changes lab_sea results
563      - add no slip conditions for evp solver (off by default), lsr-version
564        may follow
565      - fix exchange for shear at Z-points (does not change lab_sea)
566      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
567        (to force the user to pick a time step since there is not "safe" way
568        of choosing it)
569      - add principal stress diagnostics
570      - rearrange fields for evp a little to avoid having to call a: too many
571        exchanges and b: exchanges for stress trensor components which we do
572        not have.
573      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
574        of evp, complete rewrite for lsr case (latter is does not yet work
575        in all cases)
576    o pkg/kpp: add code to have mixing in shelf ice caverns
577      - add myThid to all kpp routines (long overdue)
578    
579    checkpoint59
580    o pkg/exf:
581      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
582        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
583      - move exf header files from lower_case.h to UPPER_CASE.h ;
584        add missing cvs Header & Name
585      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
586      - add namelist param. selectStressGridPosition, exf_monFreq
587      - retire many _CLIM routines, and remove data.exf_clim
588        + params moved to data.exf
589        + climsst, climsss now handled by exf_set_gen, i.e.
590          climss?period=0 refers to constant field,
591          climss?period=-12 to monthly forcing
592      - split up namelists in data.exf
593    o pkg/seaice:
594      - remove seaice_exch and seaice_exch_uv
595      - remove superfluous exchange of theta
596      - add myThid to seaice_budget_ocean/ice
597      - add new interface for atmospheric wind forcing (C-grid only)
598        + new routine
599        + two new field (taux, tauy for stress over ice)
600        + removed one global field (DAIRN) for C-grid case only
601    o pkg/thsise
602      - 2nd set of modifs for thsice adjoint in conjunction with exf
603    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
604    
605    checkpoint58y_post
606    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
607      vertical diffusivity, similar to that in MOM4; turned on using
608      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
609      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
610    o Added capability for 3D specification of background vertical diffusion
611      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
612      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
613      "data" file that contains the 3D vertical diffusivity coefficients.
614    o ice dynamics (pkg/seaice) with thsice thermodynamics:
615      - add code within pkg thsice to advect & diffuse sea-ice fields
616      similar to (and will replace) what has been added in  seaice_advdiff.F,
617      but: - conserving Mass, Heat & Salt.
618           - better when using non-linear advection scheme (not yet fully tested)
619           - can also be used in atmospheric set-up (for now, only the diffusion).
620    
621    checkpoint58x_post
622    o IO option for global-file compact format:
623      - add options when generating topology (utils/exch2/matlab-topology-generator)
624      - add I/O capability (pkg/mdsio).
625      - adapt utils/matlab/rdmds.m to read this format.
626      for now long-line format not yet supported by pkg/mdsio (& exch2).
627    o shelfice: add a few diagnostics
628    
629    checkpoint58w_post
630    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
631      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
632      (and replace horiVertRatio in NH code).
633      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
634                         and tutorial_plume_on_slope (sensitive to truncation)
635    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
636      directly to drive seaice model (C-grid only)
637    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
638     - reintroduce computation of wind from stress,
639     - compute tau (in exf_bulkformulae.F) from windstress averaged to
640       mass points to avoid tau = 0
641     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
642    o rdmnc.m: make it work with "global" files created with gluemnc
643    o rdmnc.m : some improvements in dealing with singleton dimension
644      (tested on all testreport mnc output files).
645    o genmake2: disable pkg/profiles if netcdf test fails.
646    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
647    o move call to cal_readparms up to make calendar parameters/variable available
648      to all packages
649    
650    checkpoint58v_post
651    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
652      useDynP_inEos_Zc tested.
653    o pkg/exf: changes to properly interpolate/mask/scale initial fields
654    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
655      and portions thereof.  See read_cs.txt for description and examples.
656    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
657      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
658      following the great-circle arc between those 2 points.
659    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
660      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
661    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
662     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
663     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
664     - still needs work (not working with some options ; efficiency to improve)
665       and serious testing.
666     - use this scheme for temperature & salinity in 2 advection test exp.:
667       advect_xy & advect_xz, respectively.
668    
669    checkpoint58u_post
670    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
671    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
672    o testreport: add option "-skipdir" to skip some test.
673    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
674      momentum calculation.
675    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
676    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
677      remove checkpoint.F and the_correction_step.F (no longer used);
678      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
679    o add option (linFSConserveTr) to correct for tracer source/sink due to
680      Linear Free surface
681    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
682    o pkg/thsice: fix reading mnc-pickups
683    
684    checkpoint58t_post
685    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
686    o pkg/mdsio:
687     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
688       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
689       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
690     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
691     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
692       either MDS_READ_FIELD or MDS_WRITE_FIELD )
693     - new S/R (to replace MDSWRITEMETA), which allows to write more
694       informations (variable names, time ...) to meta files.
695     - modify rdmds.m to give back the meta file content.
696    o pkg/diagnostics: change vertical interpolation to be safer, and more
697       flexible (define p-levels to interpolate to in data.diagnostics);
698      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
699       diagnostic pointer.
700    o pkg/seaice: more cleaning up of seaice_growth, added many comments
701    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
702  o fix multi-category seaice:  o fix multi-category seaice:
703   - change cpp flag SEAICE_MULTILEVEL to more meaningful name:   - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
704     SEAICE_MULTICATEGORY     SEAICE_MULTICATEGORY
705   - fix short wave heat flux   - fix short wave heat flux
706    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
707       and allow to use EVP solver. Change forward lab_sea: test both EVP
708       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
709  o Initial check-in of lab_sea adjoint  o Initial check-in of lab_sea adjoint
710    (very similar to natl_box_adjoint/code_seaice)    (very similar to natl_box_adjoint/code_seaice)
711    * used C-grid and EVP solver    * used C-grid and EVP solver

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