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revision 1.730 by cnh, Wed Oct 11 19:30:01 2006 UTC revision 1.964 by mlosch, Fri Feb 29 01:31:34 2008 UTC
# Line 4  $Name$ Line 4  $Name$
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    o change the loop ordering in most gad_*_adv_x.F to improve vectorization:
8      move a few statemens out the main loop into separate loops
9    o pkg/shelfice:
10      - sort out freshwater flux; convert freshwater fluxes to mass fluxes
11        (kg/m^2/s), does not break tests, because in verification/isomip,
12        rhoConstFresh=rhoConst (by accident)
13      - rearrange computation of tLoc, sLoc, pLoc to make code more efficient
14      - move S/R find_rho_scalar, pkg/ecco/sw_ptmp.F, pkg/ecco/sw_adtg.F into
15        new file model/src/seawater.F, so that they are available for all pkgs.
16      - convert potential temperature into in-situ temperature. This changes the
17        isomip tests => update tests
18    o add a flag writePickupAtEnd (default=true) to be able to suppress
19      writing a pickup at the last timestep
20    o pkg/profiles:
21      rename profiles_interp_mean_genericgrid as profiles_interp_mean_gg
22      (for "less than 32 characters name" compiler requirement)
23    o pkg/obcs and pkg/exf: added capability to specify seaice open boundary
24      conditions that have a different sampling frequency than S/T/U/V obcs
25    o pkg/diagnostics (stats-diags):
26      - fix global Min/Max in case 1 processor get only empty tiles
27    o genmake2: replace (4 times)
28         make genmake_tc_1.o >> genmake_warnings 2>&1
29      with
30         COMM="$CC $CFLAGS -c genmake_tc_1.c"
31         echo $COMM >> genmake_warnings
32         $COMM >> genmake_warnings 2>&1
33      to make genmake2 always see the value of CC as specified in the optfile.
34    o generic_advdiff: - prather advection scheme (SOM) coded for CS-grid.
35      - add diagnostics for 1srt & 2nd Order moments and sub-grid variance.
36      - modify verification advect_cs test to test SOM-advection on CS-grid.
37    o pkg/ctrl:
38      - Rewrite of ctrl_map_ini_ecco.F,
39        introducing a generic routine (ctrl_map_ini_gen.F).
40      - Modification of ctrl_bound/adctrl_bound handling control vector bounds.
41    
42    checkpoint59n
43    o pkg/diagnostics: for large number of diagnostics, store diagnostic mate
44      number in dedicate array "hdiag":
45      - new version of S/R DIAGNOSTICS_ADD2LIST : DIAGNOSTICS_ADDTOLIST
46        with 1 more argument (mate number); modify old version DIAGNOSTICS_ADD2LIST.
47      - many small changes (integer format) for large number of diagnostics
48      - start to use DIAGNOSTICS_ADDTOLIST (necessary for diagnostics with
49        a counter mate) in pkg diagnostics, ptracers, thsice & aim_v23.
50    o add parameter rotateGrid and Euler angles EulerPhi/Theta/Psi. For
51      usingSphericalGrid, this allows to define the rotated grid coordinates
52      via phiMin/thetaMin/dxSpacing/dySpacing, etc., but then re-compute the
53      geographical coordinates according to the inverse of the rotation defined
54      by the Euler angles, so that Coriolis parameter and online-interpolation by
55      exf works with the geographical coordinates on XC/YC/XG/YG.
56      Naturally, this feature does not work with all packages, so some
57      combinations are prohibited in config_summary (flt, flt_zonal, ecco,
58      profiles), because there the coordinates are assumed to be regular
59      spherical grid coordinates.
60    o pkg/gmredi,ctrl,ecco,autodiff,grdchk and model/src,inc:
61      - introduce isopycnal diffusion coefficient control.
62    o tools/adjoint_options:
63      - additional control vector components.
64    o pkg/mnc: have mnc create marginally meaning full coordinate variables
65      (that is the grid indices) if usingCurvilinearGrid and NOT EXCH2
66    o pkg/mypackage:
67      - add example of read/write pickup for state-var ;
68      - add entry points to the main code for state-vars diags & write-pickup.
69    o pkg/exf: rewrite of exf_getffieldrec.F to properly deal with year
70      transitions for useExfYearlyFields
71      - add new subroutine that determines the file to read from for
72        use*YearlyFields = .TRUE. and .FALSE.
73      - add a verification experiment to global_with_exf that tests
74        useExfYearlyFields with USE_EXF_INTERPOLATION defined
75    o pkg/obcs/exf: add useOBCSYearlyFields (=.FALSE.) to obcs with exf in
76      analogy to useExfYearlyFields; rearrange obcs_prescribe_read: two new
77      subroutines (which could be generated from a template, because they are
78      almost identical), for now they are included in obcs_prescribe_read.F for
79      simplicity
80    o pkg/exf:
81      - add a little more diagnostic to exf_interp_read (in analogy to
82        mds_read_field, can be turned off with debugLevel < debugLevA=1)
83      - improve vectorizability of exf_interp for TARGET_NEC_SX, makes code
84        ugly but fast by unrolling short inner loops, inserting a unroll=8
85        directive in routine lagran, and splitting a loop and making do while the
86        outermost loop (the latter requires the intoduction of index arrays)
87    o pkg/obcs: replace obcs_apply_area/heff/hsalt/hsnow with obcs_apply_seaice
88    o pkg/seaice: moved DIFFERENT_MULTIPLE from seaice_model to seaice_dynsolver
89      http://forge.csail.mit.edu/pipermail/mitgcm-devel/2008-January/003173.html
90    o verification/seaice_obcs: updated for restart test and latest options
91    o pkg/seaice: add a new flag SEAICEuseTEM to use a slightly different
92      ice rheology (so-called truncated ellipse, that gets rid of tensile stress);
93      for now this is only available for the C-grid code and also within
94      #ifdef SEAICE_ALLOW_TEM, because this option may slow down the EVP code
95    
96    checkpoint59m
97    o pkg/seaice: use different time constant for melting (SEAICE_gamma_t)
98      and freezing (SEAICE_gamma_t_frz) ice due to mixed layer temperature
99    o gad_som : fix flux output (& diagnostics) to have same units as other  
100      advection scheme fluxes (was previously multiplied by deltaT).  
101    o added verification/seaice_obcs both to test seaice open boundaries
102      and to provide an example matlab scrpt for generating them
103    o added verification/lab_sea/input.salt_plume for testing pkg/salt_plume
104    o pkg/salt_plume: clean up salt_plume_frac.F to
105      remove redundancy in PlumeMethod 1 and 4
106    o pkg/kpp: added saltplume diagnostics
107    o pkg/obcs and pkg/seaice:
108      - do not set uice and vice to zero when OB*icefile are unspecified
109      - OBCS_SEAICE_AVOID_CONVERGENCE is undefined by default
110      - moved seaice tracer obcs after call to seaice_growth
111    o pkg/salt_plume: added various options for salt plume depth
112      criterion and for vertical distribution of the salt
113    
114    checkpoint59l
115    o pkg/ptracers: new version of ptracers pickup:
116      read meta file and write only fields which are needed to restart.
117      ( same logic as main pickup file ; also using pickupStrictlyMatch )
118    o pkg/seaice:
119      - add timescale for melting due to warm mixed layer as a means of
120        setting SEAICE_availHeatFrac more conveniently
121      - add a CPP-flag/runtime parameter check for flooding algorithm
122      - reformulated availHeat in seaice_growth.F to be independent of AREA
123    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
124      unit changes
125    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
126    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
127      SX vector computer.
128    o pkg/seaice:
129      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
130        seaice forcing fields can now be read only through pkg/exf
131      - removed some unused halos
132    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
133    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
134      or U/VICE from U/VWIND before computing U/VSTRESS
135    
136    checkpoint59k
137    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
138      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
139    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
140      all experiments pass when compile with un-initialised var. checking option.
141    o added pkg/salt_plume
142    o script to test restart (for now, in MITgcm_contrib/jmc_script)
143    o pkg/seaice: new read/write pickup version.
144      read meta file and write only fields which are needed to restart.
145      ( same logic as main pickup file ; also using pickupStrictlyMatch )
146    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
147    o lab_sea.hb87: modify the domain & update output.hb87.txt :
148      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
149      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
150      process. Fixed here by closing the domain at the Northern boundary.
151    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
152    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
153      a set of consecutive levels in/from a 3-D array.
154    o pkg/ptracers:
155      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
156      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
157    
158    checkpoint59j
159    o in pkgs: dic, obcs, offline, rbcs:
160      standard way to compute coeff. for time interpolation between 2 time reccords
161      which retains full precision (& make results less dependent on compiler).
162      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
163    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
164      packages instead of reading ice cover and wind speed separately
165    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
166     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
167      to allow to compile customized code before the update)
168    o cleaning-up:
169      - fix CPP instruction syntax in pkg/obcs
170      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
171        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
172      - fix some threads issue in IO parts.
173    o pkg/dic:
174      - add tons of "_d 0" (--> much better testreports !)
175       and then update outputs of tutorial_global_oce_biogeo
176    o pkg/mom_fluxform:
177      add a special version of momentum advection intended to conserve momentum
178      next to a bathymetry step or a coastline edge. (default = off = #undef)
179    o new read/write pickup version:
180      - for now, only implemented for main (mdsio) pickup file.
181      - write out only what is needed to restart; merge pickup_nh , pickup_ph
182        and main pickup together.
183      - read meta file; read only what is needed to restart; stop if a field
184        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
185        if it make sense (even if the restart is not perfect).
186      - if no meta file, assume that pickup to read corresponds exactly to
187        a pickup that would currently be written.
188      - read pickup written in the old format (until checkpoint59i) if it
189        recognizes an old meta file (no field-list).
190      - add a meta file in exp. which starts from a pickup: 2 cases:
191        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
192         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
193        b) a meta file describing the content of the associated pickup file
194         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
195    o pkg/mdsio & pkg/rw:
196      - new routine to read a meta file ; new set of routine to read
197        Multiple-fields file (with meta file).
198    o added open boundary conditions capability for seaice
199        HSNOW, HSALT, UICE, and VICE
200    
201    checkpoint59i
202    o adjoint:
203      * fix multiDimAdvection adjoint
204        (partial recomputation problem by TAF for fVerT(:,:,kDown)
205        and comlev1 size definition (maxpass vs. max. number of tracers)
206      * verification/global_ocean.90x45x15 adjoint now tests
207        NLFS and multiDimAdvection using DST3 (=30)
208      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
209    o pkg/kpp: add "_d 0" to real constant (if missing);
210      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
211      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
212    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
213      for internal parameters related to restart process (formerly from PARAMS.h)
214      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
215    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
216      as argument. (only atm2d & obcs write_pickup have not yet been updated)
217    o pkg/monitor:
218      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
219      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
220      - account for deep Atmosphere factor and density factor (anelastic)
221    o added open boundary conditions capability for seaice HEFF and AREA
222    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
223      thermodynamics
224      - requires a little reorganization, which affects the testreport results
225        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
226        so that now the conservative form is tested
227      - add a few comments
228    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
229    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
230    o add new diagnostics to seaice: advective, diffusive fluxes (only for
231      multidim-advection, for scheme 2 they are not filled) and transports,
232      thermodynamic growth rates
233    o change units of EmPmR (inside the code, + within coupling interface)
234      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
235      Affects results @ truncation level (cg2d match) and update output of
236       experiments: lab_sea(6), global_ocean.90x40x15(10),
237      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
238      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
239      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
240      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
241    
242    checkpoint59h
243    o pkg/exf:
244      - improve vectorization by moving if-statement out of loops in
245        exf_mapfields, exf_radiation
246      - exf_bulkformulae.F: introduce 2D fields and vectorize code
247    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
248    o testreport:
249      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
250        monitor & update offline_exf_seaice exp. output.
251      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
252    o pkg/seaice:
253      - bug fix in the evp solver: boundary conditions were affected be
254        masking of zMax/zMin (changes results)
255      - minor bug fix in boundary conditions in seaice_calc_strainrates
256        (changes results for no_slip)
257      - seaice_lsr.F: make interpolation of eta dependent on boundaries
258      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
259      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
260        stress formulation and no-slip boundary conditions
261    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
262      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
263    o pkg/seaice: a first HSALT time stepping equation has been checked in
264    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
265      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
266      without requiring DO-IF statements
267    o pkg/thsice:
268      use continuous power-law function for partition of energy between lateral
269      melting/freezing and thinning/thickening ; old code using step function
270      still available with #undef THSICE_FRACEN_POWERLAW
271      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
272    o testreport: change AD testing : check against results/output_adm.txt
273      using same scripts as for forward test.
274    
275    checkpoint59g
276    o adjoint testing: in preparation for changing testreport:
277      - output format: cost and grad written on separated lines
278      - ad output results in directory "results" (instead of "results_ad")
279    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
280    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
281    o pkg/ecco: allow user defined cost function contributions
282    o testreport:
283      Allow to choose (per experiment) the list of tested output variables
284       and the main variable (used to issue a pass/FAIL ) ;
285      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
286      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
287      Also modify printing of summary:
288       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
289       b) echo the list of tested variables in the individual summary.txt of
290          each experiment.
291    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
292      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
293      (but still depend on the tile decompostion of the domain).
294    o pkg/seaice: change a discretization detail to make the B-grid code
295      "more symmetric". This change is likely to remove all "ridges/leads" that
296      where quasi-aligned with the grid in B-grid solutions. It may also be
297      the solution to the stress coupling issues with the B-grid.
298    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
299      remove .cvsignore from input dir. (since testreport no longer run here).
300    o pkg/thsice:
301     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
302     - fix reshaping of sea-ice just after advection:
303       melt all the ice only if ice-volume is too small.
304     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
305       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
306     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
307    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
308      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
309    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
310      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
311      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
312      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
313      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
314      -> update output.txt
315    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
316     this affects truncation error: -> update output.txt of exp:
317      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
318      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
319    
320    checkpoint59f
321    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
322    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
323      a bounded range (in forward mode)
324    o pkg/ecco, ctrl, autodiff and mom_common:
325     internal parameter controls, completements of implementations
326    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
327    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
328      (not seem any difference in testing results).
329    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
330       at face corners.
331    o pkg/generic_advdiff:
332     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
333      loop range indices for computing vertical advection tendency
334      and do the calculation in the interior only (no overlap) ;
335      for now, only implemented for SOM advection (to save CPU time).
336     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
337    o exch2 adjoint
338      First set of changes:
339      - add exch2 hand-written adjoint templates
340      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
341        This will require cleanup in pkg/autodiff/*.F
342        (changed routines currently kept separate in verif. code/)
343      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
344        that used to hide exch2 or cubed-sphere specific code
345        (commented via 'cph-exch2')
346    o pkg/seaice
347      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
348    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
349       output of global_ocean.cs32x15.thsice .
350    
351    checkpoint59e
352    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
353      for B-grid vector (not yet tested) and C-grid vector (<- only used
354      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
355    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
356      (#ifdef ALLOW_SALT_PLUME)
357    o gather_2d/scatter_2d: removed halo regions
358    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
359      scheme and the corresponding test case (under front_relax dir). For now,
360      only available with Skew-flux form and not yet tested in realistic set-up.
361      adjoint: store directives updated, but gradient checks deteriorated,
362      so maybe GM/Redi adjoint is now broken.
363    o seaice adjoint
364      * add AREA, HEFF, HSNOW as control variable
365        (should not change lab_sea results)
366      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
367    o pkg/seaice:
368      * added computation of saltFlux in seaice_growth;
369        For time being, sea ice salinity is assumed constant
370        contribution of snow flooding to freshening of sea ice is neglected.
371        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
372        defaults to 0.0 in order to maintain backward compatibility.
373        Typical values for SEAICE_salinity are 4 to 10 g/kg.
374      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
375      * added SEAICE_availHeatFrac, which specifies fraction of surface level
376        heat content used to melt or grow ice
377      * commented out cap of HICE: it helps keep ice thinner
378      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
379      * applied OBCS T/S mask to HEFFM sea ice mask
380    
381    checkpoint59d
382    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
383     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
384     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
385    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
386     and change default value of parameter "GM_Small_Number";
387     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
388       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
389       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
390    o pkg/ecco: cost function when applying pkg/smooth to controls
391    o pkg/ctrl: add forcingPrecond run time parameter
392    o pkg/seaice:
393     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
394     - fix bug in metric terms of u-equation in LSR solver (implicit part),
395       changes verification/lab_sea
396     - rearrange implicit part of u-equation in LSR solver to make it easier to
397       read, understand, and debug. This causes changes at the truncation level.
398     - fix (serious) bug in the boundary conditions (sign error in the implicit
399       part) of the LSR solver. Changes all LSR results.
400     - fixed problem with HSNOW initialization to avoid thick snow when AREA
401       is initilized with small values - does not change lab_sea results.
402     - added HsnowFile initialization capability
403    o pkg/smooth: addition to model/src and pkg/ctrl so allow
404     initialization of pkg/smooth and application to control vector
405    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
406    o dependencies: pkg/profiles requires pkg/cal
407    o pkg/profiles:
408     - added option ALLOW_PROFILES_GENERICGRID
409         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
410         that interpolation information (grid points and coefficients) is provided
411         within the netcdf input files.
412         -> sample matlab scripts can be found in MITgcm_contrib/gael
413         that allow you to prepare netcdf input files.
414     - also modified: cleaner include statements, cleaner error print statements,
415       cleaner stops when error, and more tests of the netcdf input files consistency.
416    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
417    o pkg/seaice:
418     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
419       requires a new routine: seaice_diagnostics_fill.F
420     - make sure that seaice does not move if not forced (pressure replacement
421       method, Hibler and Ip, 1995), changes results
422     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
423     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
424       It is turned off by default (=-1.), because it changes the results.
425     - make it possible to read AREA from a file, too.
426    
427    checkpoint59c
428    o add S/R and diagnostics for oceanic mixed-layer depth
429    o move GMRedi call after all vertical mixing schemes (including KPP)
430    o pkg/thsice:
431     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
432      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
433    o pkg/obcs:
434     - bug fix for balance code
435    o pkg/seaice:
436      - allow values of SEAICE_elasticParm > 1
437      - add new parameter SEAICE_evpTauRelax as an alternative
438        to SEAICE_elasticParm
439      - make lsr boundary conditions free slip (by default), changes result
440      - add code for no slip boundary conditions for lsr
441      - set minimum of zeta to zero (and not 4e8) (changes results)
442      - add a cap on AREA after advecting AREA if seaice_growth is not called
443    o change calculation of Visbeck K:
444      - no longer depend on tapering scheme; instead, compute slope (limited
445        by GM_maxSlope). this is equivalent to what was comuted before with
446        clipping or linear tappering.
447      - fix vertical averaging (wrong by 1/2 level)
448      - leave the old version (but will not be maintained) within
449        #ifdef OLD_VISBECK_CALC / #endif
450      - update output of exp. ideal_2D_oce
451    o change error catch in calc_r_star to improve vectorization
452    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
453      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
454    o adjoint:
455      Re-organized adjoint checkpointing according to Matt Mazloff
456      (but with modifs/completions/cleanups)
457      Storing is now bundled into large arrays to optimized I/O
458      (and second step in cleanup of the_main_loop)
459    
460    checkpoint59b
461    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
462      - export/import (between ocean & coupler) fields needed for ocean DIC.
463    o pkg/seaice:
464      - get rid of three more exchanges seaice_calc_viscosities (required
465        different loop boundaries in seaice_lsr and seaice_ocean_stress)
466      - bug fix in seaice_ocean_stress (update of lab_sea required)
467      - reduce loop boundaries to necessary minimum also in seaice_evp
468      - go back to the old way of computing deltaC/Z as the adjoint likes that
469        better
470    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
471      passive tracer to an Age Tracer) + update output.txt
472    o pkg/exf:
473      - implement A-grid / C-grid selection for wind-stress input files.
474      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
475      for now, in exf_bulk_largeyeager04.F only :
476      - change implementation for case where windspeed + 2. components wind-stress
477        are read-in. AND use rhoConstFresh to convert evap.
478    o pkg/seaice:
479      - use correct EXCH_UV for wind-forcing (on A-grid).
480      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
481        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
482    o pkg/exf:
483      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
484      EXF_INTERPOLATION:
485      - merge global_with_exf/code version of exf_interp_read.F
486        to the main code ;
487      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
488        reading the file ; Important: This options needs to be defined to recover
489        previous code.
490        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
491      - no longer loose real*8 precision along the way when using exf_iprec=64.
492    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
493      - change discretisation of evp-solver in order to avoid another exchange
494        (changes lab_sea) and clean up a little
495      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
496        help the adjoint (this also changes the results slightly)
497      - add a few "_d 0" where they had been missing in seaice_evp.F
498      - cleaning up: remove unused seaice_calc_rhs.F
499    o pkg/exf: some cleaning-up:
500      - change various "constants" into runtime parameters
501      - cleaned-up Large&Yeager04 routine which should eventually
502        replace exf_bulkformulae.F (changed names of S/R and CPP)
503        and merged various ALLOW_ATM_WIND options
504     only used with thsice pkg (in thsice_get_exf.F):
505      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
506        which are used when useStabilityFct_overIce=TRUE (= the default)
507      - change default values of ice & snow emissivity and scale downward LW
508        by ice & snow emissivity.
509    o pkg/thsice:
510     fix few little problems, in thsice_calc_thickn.F:
511      - growth vertically (and not laterally) if iceFrac == iceMaskMax
512      - melt only laterally if hIce < hThinIce (as the comments say)
513      and in thsice_extend.F:
514      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
515      - start to form ice as soon as the minimum ice-volume is reachable.
516     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
517      and cpl_aim+ocn
518    o pkg/kpp
519     - move computation of surface related input fields to KPP into a new
520       subroutine kpp_forcing_surf.F
521     - remove wrong (within bi,bj loops) EXCH calls.
522     - little cleaning (add argument myThid in last position, cvs header ...)
523     - for now, fix conservation problem by exchanging KPPviscAz (may not
524       be the best fix)
525    o pkg/seaice
526     - check for inconsistent evp parameter/cpp-flag combination
527     - remove leftover errIO flat for obsolete name list error handling
528    o OpenAD
529     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
530    
531    checkpoint59a
532    o pkg/seaice: some parameter clarifications and a little bit of clean up
533    o pkg/thsice: rename run-time parameters:
534       himin       -> hIceMin
535       himin0      -> hThinIce
536       hihig       -> hThickIce
537       i0          -> i0swFrac
538       transCoef   -> bMeltCoef
539       frac_energy -> fracMelting
540      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
541       with default values (for now) that do not change the results.
542      remove old version of thsice vars advection in pkg/seaice.
543    o in FFIELDS.h:
544      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
545      - make pLoad & sIceLoad always available (but still only used if
546         ATMOSPHERIC_LOADING is #define).
547    o pkg/kpp: replaced _KPP_RL with _RL
548    o bug fixes for vertical diffusivity computations when both KPP and
549        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
550        are no longer updating the vertical diffusivity array
551        (passed as argument) but are (re-) setting those arrays.
552    o pkg/seaice: fix bug in evp solver, while doing that
553      - change (improve?) discretization of stress computations for both
554        cgrid-lsr and evp solver
555      - add a new routine to compute strain rates
556      - the above changes lab_sea results
557      - add no slip conditions for evp solver (off by default), lsr-version
558        may follow
559      - fix exchange for shear at Z-points (does not change lab_sea)
560      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
561        (to force the user to pick a time step since there is not "safe" way
562        of choosing it)
563      - add principal stress diagnostics
564      - rearrange fields for evp a little to avoid having to call a: too many
565        exchanges and b: exchanges for stress trensor components which we do
566        not have.
567      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
568        of evp, complete rewrite for lsr case (latter is does not yet work
569        in all cases)
570    o pkg/kpp: add code to have mixing in shelf ice caverns
571      - add myThid to all kpp routines (long overdue)
572    
573    checkpoint59
574    o pkg/exf:
575      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
576        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
577      - move exf header files from lower_case.h to UPPER_CASE.h ;
578        add missing cvs Header & Name
579      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
580      - add namelist param. selectStressGridPosition, exf_monFreq
581      - retire many _CLIM routines, and remove data.exf_clim
582        + params moved to data.exf
583        + climsst, climsss now handled by exf_set_gen, i.e.
584          climss?period=0 refers to constant field,
585          climss?period=-12 to monthly forcing
586      - split up namelists in data.exf
587    o pkg/seaice:
588      - remove seaice_exch and seaice_exch_uv
589      - remove superfluous exchange of theta
590      - add myThid to seaice_budget_ocean/ice
591      - add new interface for atmospheric wind forcing (C-grid only)
592        + new routine
593        + two new field (taux, tauy for stress over ice)
594        + removed one global field (DAIRN) for C-grid case only
595    o pkg/thsise
596      - 2nd set of modifs for thsice adjoint in conjunction with exf
597    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
598    
599    checkpoint58y_post
600    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
601      vertical diffusivity, similar to that in MOM4; turned on using
602      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
603      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
604    o Added capability for 3D specification of background vertical diffusion
605      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
606      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
607      "data" file that contains the 3D vertical diffusivity coefficients.
608    o ice dynamics (pkg/seaice) with thsice thermodynamics:
609      - add code within pkg thsice to advect & diffuse sea-ice fields
610      similar to (and will replace) what has been added in  seaice_advdiff.F,
611      but: - conserving Mass, Heat & Salt.
612           - better when using non-linear advection scheme (not yet fully tested)
613           - can also be used in atmospheric set-up (for now, only the diffusion).
614    
615    checkpoint58x_post
616    o IO option for global-file compact format:
617      - add options when generating topology (utils/exch2/matlab-topology-generator)
618      - add I/O capability (pkg/mdsio).
619      - adapt utils/matlab/rdmds.m to read this format.
620      for now long-line format not yet supported by pkg/mdsio (& exch2).
621    o shelfice: add a few diagnostics
622    
623    checkpoint58w_post
624    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
625      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
626      (and replace horiVertRatio in NH code).
627      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
628                         and tutorial_plume_on_slope (sensitive to truncation)
629    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
630      directly to drive seaice model (C-grid only)
631    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
632     - reintroduce computation of wind from stress,
633     - compute tau (in exf_bulkformulae.F) from windstress averaged to
634       mass points to avoid tau = 0
635     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
636    o rdmnc.m: make it work with "global" files created with gluemnc
637    o rdmnc.m : some improvements in dealing with singleton dimension
638      (tested on all testreport mnc output files).
639    o genmake2: disable pkg/profiles if netcdf test fails.
640    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
641    o move call to cal_readparms up to make calendar parameters/variable available
642      to all packages
643    
644    checkpoint58v_post
645    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
646      useDynP_inEos_Zc tested.
647    o pkg/exf: changes to properly interpolate/mask/scale initial fields
648    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
649      and portions thereof.  See read_cs.txt for description and examples.
650    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
651      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
652      following the great-circle arc between those 2 points.
653    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
654      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
655    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
656     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
657     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
658     - still needs work (not working with some options ; efficiency to improve)
659       and serious testing.
660     - use this scheme for temperature & salinity in 2 advection test exp.:
661       advect_xy & advect_xz, respectively.
662    
663    checkpoint58u_post
664    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
665    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
666    o testreport: add option "-skipdir" to skip some test.
667    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
668      momentum calculation.
669    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
670    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
671      remove checkpoint.F and the_correction_step.F (no longer used);
672      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
673    o add option (linFSConserveTr) to correct for tracer source/sink due to
674      Linear Free surface
675    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
676    o pkg/thsice: fix reading mnc-pickups
677    
678    checkpoint58t_post
679    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
680    o pkg/mdsio:
681     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
682       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
683       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
684     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
685     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
686       either MDS_READ_FIELD or MDS_WRITE_FIELD )
687     - new S/R (to replace MDSWRITEMETA), which allows to write more
688       informations (variable names, time ...) to meta files.
689     - modify rdmds.m to give back the meta file content.
690    o pkg/diagnostics: change vertical interpolation to be safer, and more
691       flexible (define p-levels to interpolate to in data.diagnostics);
692      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
693       diagnostic pointer.
694    o pkg/seaice: more cleaning up of seaice_growth, added many comments
695    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
696    o fix multi-category seaice:
697     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
698       SEAICE_MULTICATEGORY
699     - fix short wave heat flux
700    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
701       and allow to use EVP solver. Change forward lab_sea: test both EVP
702       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
703    o Initial check-in of lab_sea adjoint
704      (very similar to natl_box_adjoint/code_seaice)
705      * used C-grid and EVP solver
706      * used KPP, GM/Redi
707      * uses inAdExact=.TRUE.
708      * gradient checks fail for both ADM and TLM
709        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
710        f.d. gradients actually seem more problematic than ADM, TLM gradients;
711        issue is related to forward mismatch between g77 an ifort
712    o pkg/seaice: overhaul of thermodynamics
713     - growth.F and groatb.F are replaced by new routine seaice_growth.F
714     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
715     - move a few global fields out of SEAICE.h into seaice_growth.F and
716       make them 2D (FICE/QNETO/ ...)
717     - remove FO (it is the same as QNETO)
718     - introduce a few local fields to avoid modifying external fields such
719       as atemp, etc.
720    
721    checkpoint58s_post
722    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
723      changed exf_set_gen.F so that
724        genperiod=0 means input file is one time-constant field and
725        genperiod=-12 means input file contains 12 monthly means
726    o CG2D: use pre-computed solver main-diagonal (stored in common block);
727      this affects truncation error ; generate new output file for exp. which
728      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
729        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
730        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
731        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
732        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
733        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
734    o start implementation of deep-atmosphere and anelastic formulation
735    o verification: remove 2nd copy of input files and use script "prepare_run"
736      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
737    o mom_common/vecinv/fluxform: fix a few initialisation isssues
738    o profiles: fix for multithreaded case
739    
740    o diagnostics: rename few diags:
741      s/'PRESSURE'/'RCENTER '/g
742      s/'TICE    '/'oceFreez'/g
743      s/'TAUX    '/'oceTAUX '/g
744      s/'TAUY    '/'oceTAUY '/g
745      s/'SWFLUX  '/'oceQsw  '/g
746      s/DIFx/DFxE/g
747      s/DIFy/DFyE/g
748      and add few ocean-forcing diagnostics:
749      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
750    o modifications to pkg/seaice/growth.F and budget.F, which change results of
751      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
752      as actual snow thickness.  It now refers everywhere to effective snow
753      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
754    
755    checkpoint58r_post
756    o modifications to pkg/seaice/growth.F, which change results of
757      lab_sea experiment: fixes pertain to melting snow over open water, to
758      masking EVAP under sea ice, and to using the correct AREA variable for
759      computations of EVAP, PRECIP, HSNOW, and GHEFF
760    o add ability to read bathy, salt, and theta using MNC (off by def)
761    o add flooding algorithm and advection of HSNOW for pkg/seaice;
762      both are turned off by default and do no change any results
763    o seaice advection with pkg/thsice: a step toward the use of non-linear
764      advection scheme, but #ifdef or commented out for now (requires more EXCH).
765    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
766      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
767      in natl_box (affects results @ truncation level: update output.txt)
768    o multi-threading and IO:
769      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
770      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
771        (needed to work with SingleCpuIO): tested in all verif. exp.
772    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
773      affects the results (but none of the verification test uses this scheme).
774    o Adding some pkg/diagnostics capability to pkg/seaice
775      (will certainly be subject to changes)
776    o ctrl: adding new control variables:
777      lwflux, lwdown, evap, snowprecip, apressure, runoff
778    
779    checkpoint58q_post
780    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
781      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
782      high_res_cube configuration by 4% on Columbia.
783    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
784      add (in global_with_exf/code) a version of EXF_INTERP_READ without
785      dynamical allocation (seems to work in multi-threaded).
786    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
787      single CPU io) so that TAF does not have to see EESUPPORT.h
788  o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)  o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
789    
790  checkpoint58p_post  checkpoint58p_post

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