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revision 1.763 by mlosch, Tue Jan 9 13:36:19 2007 UTC revision 1.973 by jmc, Thu Apr 10 13:56:08 2008 UTC
# Line 4  $Name$ Line 4  $Name$
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    checkpoint59p
8    o gchem / dic / cfc :
9      - add useDIC, useCFC , read from "data.gchem" (& hold in GCHEM.h);
10      - add new parameter files: "data.dic" & "data.cfc" ;
11      - various re-arrangement in initialisation & header file ;
12      - fix tutorial_global_oce_biogeo for multi-threaded test.
13    o pkg/dic: test for "pickup_dic" file when restarting ;
14      if no pickup-file, can restart with a re-initialised pH (same as it did
15      before) providing pickupStrictlyMatch is set to False.
16    o change argument list of S/R PTRACERS_WRITE_PICKUP & MYPACKAGE_WRITE_PICKUP
17      + fix call to S/R GGL90_WRITE_PICKUP & DIC_WRITE_PICKUP
18    o add a "warning" (to Error msg file) when an Active Tracer is not using AB-2
19      and staggerTimeStep is off (needed for stability of Internal-wave dynamics).
20    o move out of PARAMS.h & data the last pieces of old-ptracer code: tauTr1ClimRelax,
21     & lambdaTr1ClimRelax ; put those 2 params in PTRACERS_PARAMS.h & data.ptracers
22       (note: not clear to me what lambdaTr1ClimRelax is still used for ...)
23    o pkg/mom_vecinv: - new parameter "selectVortScheme" to select which
24       scheme to use for vorticty-term ;
25     - compute upwindVorticity=T case within mom_vi_u/v_coriolis_c4.F
26       (with default selectVortScheme, return to original discretisation)
27     - remove weird combination (e.g.: upwindVorticity & highOrderVorticity)
28    o pkg/seaice: add a line to the summary to indicate grid type (B/C)
29    o in mom_calc_visc, fix average value of viscAh_W & viscA4_W next to the
30      bottom ; only used with variable horizontal viscosity and non-hydrostatic.
31      also fix diagnostics VISCAHW & VISCA4W.
32    
33    checkpoint59o
34    o dome/code/obcs_calc.F: avoid division by zero (detected using gfortran).
35    o change the loop ordering in most gad_*_adv_x.F to improve vectorization:
36      move a few statemens out the main loop into separate loops
37    o pkg/shelfice:
38      - sort out freshwater flux; convert freshwater fluxes to mass fluxes
39        (kg/m^2/s), does not break tests, because in verification/isomip,
40        rhoConstFresh=rhoConst (by accident)
41      - rearrange computation of tLoc, sLoc, pLoc to make code more efficient
42      - move S/R find_rho_scalar, pkg/ecco/sw_ptmp.F, pkg/ecco/sw_adtg.F into
43        new file model/src/seawater.F, so that they are available for all pkgs.
44      - convert potential temperature into in-situ temperature. This changes the
45        isomip tests => update tests
46    o add a flag writePickupAtEnd (default=true) to be able to suppress
47      writing a pickup at the last timestep
48    o tools/mpack-1.6 :
49      - disable automake (not working) and autoconf (not needed).
50      - update to version 1.6.4 which fix MD5 code on some 64 bits platforms
51        also cleaner with much less compilation warnings.
52    o pkg/profiles:
53      rename profiles_interp_mean_genericgrid as profiles_interp_mean_gg
54      (for "less than 32 characters name" compiler requirement)
55    o pkg/obcs and pkg/exf: added capability to specify seaice open boundary
56      conditions that have a different sampling frequency than S/T/U/V obcs
57    o pkg/diagnostics (stats-diags):
58      - fix global Min/Max in case 1 processor get only empty tiles
59    o genmake2: replace (4 times)
60         make genmake_tc_1.o >> genmake_warnings 2>&1
61      with
62         COMM="$CC $CFLAGS -c genmake_tc_1.c"
63         echo $COMM >> genmake_warnings
64         $COMM >> genmake_warnings 2>&1
65      to make genmake2 always see the value of CC as specified in the optfile.
66    o generic_advdiff: - prather advection scheme (SOM) coded for CS-grid.
67      - add diagnostics for 1srt & 2nd Order moments and sub-grid variance.
68      - modify verification advect_cs test to test SOM-advection on CS-grid.
69    o pkg/ctrl:
70      - Rewrite of ctrl_map_ini_ecco.F,
71        introducing a generic routine (ctrl_map_ini_gen.F).
72      - Modification of ctrl_bound/adctrl_bound handling control vector bounds.
73    
74    checkpoint59n
75    o pkg/diagnostics: for large number of diagnostics, store diagnostic mate
76      number in dedicate array "hdiag":
77      - new version of S/R DIAGNOSTICS_ADD2LIST : DIAGNOSTICS_ADDTOLIST
78        with 1 more argument (mate number); modify old version DIAGNOSTICS_ADD2LIST.
79      - many small changes (integer format) for large number of diagnostics
80      - start to use DIAGNOSTICS_ADDTOLIST (necessary for diagnostics with
81        a counter mate) in pkg diagnostics, ptracers, thsice & aim_v23.
82    o add parameter rotateGrid and Euler angles EulerPhi/Theta/Psi. For
83      usingSphericalGrid, this allows to define the rotated grid coordinates
84      via phiMin/thetaMin/dxSpacing/dySpacing, etc., but then re-compute the
85      geographical coordinates according to the inverse of the rotation defined
86      by the Euler angles, so that Coriolis parameter and online-interpolation by
87      exf works with the geographical coordinates on XC/YC/XG/YG.
88      Naturally, this feature does not work with all packages, so some
89      combinations are prohibited in config_summary (flt, flt_zonal, ecco,
90      profiles), because there the coordinates are assumed to be regular
91      spherical grid coordinates.
92    o pkg/gmredi,ctrl,ecco,autodiff,grdchk and model/src,inc:
93      - introduce isopycnal diffusion coefficient control.
94    o tools/adjoint_options:
95      - additional control vector components.
96    o pkg/mnc: have mnc create marginally meaning full coordinate variables
97      (that is the grid indices) if usingCurvilinearGrid and NOT EXCH2
98    o pkg/mypackage:
99      - add example of read/write pickup for state-var ;
100      - add entry points to the main code for state-vars diags & write-pickup.
101    o pkg/exf: rewrite of exf_getffieldrec.F to properly deal with year
102      transitions for useExfYearlyFields
103      - add new subroutine that determines the file to read from for
104        use*YearlyFields = .TRUE. and .FALSE.
105      - add a verification experiment to global_with_exf that tests
106        useExfYearlyFields with USE_EXF_INTERPOLATION defined
107    o pkg/obcs/exf: add useOBCSYearlyFields (=.FALSE.) to obcs with exf in
108      analogy to useExfYearlyFields; rearrange obcs_prescribe_read: two new
109      subroutines (which could be generated from a template, because they are
110      almost identical), for now they are included in obcs_prescribe_read.F for
111      simplicity
112    o pkg/exf:
113      - add a little more diagnostic to exf_interp_read (in analogy to
114        mds_read_field, can be turned off with debugLevel < debugLevA=1)
115      - improve vectorizability of exf_interp for TARGET_NEC_SX, makes code
116        ugly but fast by unrolling short inner loops, inserting a unroll=8
117        directive in routine lagran, and splitting a loop and making do while the
118        outermost loop (the latter requires the intoduction of index arrays)
119    o pkg/obcs: replace obcs_apply_area/heff/hsalt/hsnow with obcs_apply_seaice
120    o pkg/seaice: moved DIFFERENT_MULTIPLE from seaice_model to seaice_dynsolver
121      http://forge.csail.mit.edu/pipermail/mitgcm-devel/2008-January/003173.html
122    o verification/seaice_obcs: updated for restart test and latest options
123    o pkg/seaice: add a new flag SEAICEuseTEM to use a slightly different
124      ice rheology (so-called truncated ellipse, that gets rid of tensile stress);
125      for now this is only available for the C-grid code and also within
126      #ifdef SEAICE_ALLOW_TEM, because this option may slow down the EVP code
127    
128    checkpoint59m
129    o pkg/seaice: use different time constant for melting (SEAICE_gamma_t)
130      and freezing (SEAICE_gamma_t_frz) ice due to mixed layer temperature
131    o gad_som : fix flux output (& diagnostics) to have same units as other  
132      advection scheme fluxes (was previously multiplied by deltaT).  
133    o added verification/seaice_obcs both to test seaice open boundaries
134      and to provide an example matlab scrpt for generating them
135    o added verification/lab_sea/input.salt_plume for testing pkg/salt_plume
136    o pkg/salt_plume: clean up salt_plume_frac.F to
137      remove redundancy in PlumeMethod 1 and 4
138    o pkg/kpp: added saltplume diagnostics
139    o pkg/obcs and pkg/seaice:
140      - do not set uice and vice to zero when OB*icefile are unspecified
141      - OBCS_SEAICE_AVOID_CONVERGENCE is undefined by default
142      - moved seaice tracer obcs after call to seaice_growth
143    o pkg/salt_plume: added various options for salt plume depth
144      criterion and for vertical distribution of the salt
145    
146    checkpoint59l
147    o pkg/ptracers: new version of ptracers pickup:
148      read meta file and write only fields which are needed to restart.
149      ( same logic as main pickup file ; also using pickupStrictlyMatch )
150    o pkg/seaice:
151      - add timescale for melting due to warm mixed layer as a means of
152        setting SEAICE_availHeatFrac more conveniently
153      - add a CPP-flag/runtime parameter check for flooding algorithm
154      - reformulated availHeat in seaice_growth.F to be independent of AREA
155    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
156      unit changes
157    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
158    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
159      SX vector computer.
160    o pkg/seaice:
161      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
162        seaice forcing fields can now be read only through pkg/exf
163      - removed some unused halos
164    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
165    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
166      or U/VICE from U/VWIND before computing U/VSTRESS
167    
168    checkpoint59k
169    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
170      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
171    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
172      all experiments pass when compile with un-initialised var. checking option.
173    o added pkg/salt_plume
174    o script to test restart (for now, in MITgcm_contrib/jmc_script)
175    o pkg/seaice: new read/write pickup version.
176      read meta file and write only fields which are needed to restart.
177      ( same logic as main pickup file ; also using pickupStrictlyMatch )
178    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
179    o lab_sea.hb87: modify the domain & update output.hb87.txt :
180      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
181      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
182      process. Fixed here by closing the domain at the Northern boundary.
183    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
184    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
185      a set of consecutive levels in/from a 3-D array.
186    o pkg/ptracers:
187      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
188      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
189    
190    checkpoint59j
191    o in pkgs: dic, obcs, offline, rbcs:
192      standard way to compute coeff. for time interpolation between 2 time reccords
193      which retains full precision (& make results less dependent on compiler).
194      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
195    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
196      packages instead of reading ice cover and wind speed separately
197    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
198     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
199      to allow to compile customized code before the update)
200    o cleaning-up:
201      - fix CPP instruction syntax in pkg/obcs
202      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
203        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
204      - fix some threads issue in IO parts.
205    o pkg/dic:
206      - add tons of "_d 0" (--> much better testreports !)
207       and then update outputs of tutorial_global_oce_biogeo
208    o pkg/mom_fluxform:
209      add a special version of momentum advection intended to conserve momentum
210      next to a bathymetry step or a coastline edge. (default = off = #undef)
211    o new read/write pickup version:
212      - for now, only implemented for main (mdsio) pickup file.
213      - write out only what is needed to restart; merge pickup_nh , pickup_ph
214        and main pickup together.
215      - read meta file; read only what is needed to restart; stop if a field
216        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
217        if it make sense (even if the restart is not perfect).
218      - if no meta file, assume that pickup to read corresponds exactly to
219        a pickup that would currently be written.
220      - read pickup written in the old format (until checkpoint59i) if it
221        recognizes an old meta file (no field-list).
222      - add a meta file in exp. which starts from a pickup: 2 cases:
223        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
224         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
225        b) a meta file describing the content of the associated pickup file
226         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
227    o pkg/mdsio & pkg/rw:
228      - new routine to read a meta file ; new set of routine to read
229        Multiple-fields file (with meta file).
230    o added open boundary conditions capability for seaice
231        HSNOW, HSALT, UICE, and VICE
232    
233    checkpoint59i
234    o adjoint:
235      * fix multiDimAdvection adjoint
236        (partial recomputation problem by TAF for fVerT(:,:,kDown)
237        and comlev1 size definition (maxpass vs. max. number of tracers)
238      * verification/global_ocean.90x45x15 adjoint now tests
239        NLFS and multiDimAdvection using DST3 (=30)
240      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
241    o pkg/kpp: add "_d 0" to real constant (if missing);
242      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
243      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
244    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
245      for internal parameters related to restart process (formerly from PARAMS.h)
246      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
247    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
248      as argument. (only atm2d & obcs write_pickup have not yet been updated)
249    o pkg/monitor:
250      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
251      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
252      - account for deep Atmosphere factor and density factor (anelastic)
253    o added open boundary conditions capability for seaice HEFF and AREA
254    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
255      thermodynamics
256      - requires a little reorganization, which affects the testreport results
257        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
258        so that now the conservative form is tested
259      - add a few comments
260    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
261    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
262    o add new diagnostics to seaice: advective, diffusive fluxes (only for
263      multidim-advection, for scheme 2 they are not filled) and transports,
264      thermodynamic growth rates
265    o change units of EmPmR (inside the code, + within coupling interface)
266      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
267      Affects results @ truncation level (cg2d match) and update output of
268       experiments: lab_sea(6), global_ocean.90x40x15(10),
269      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
270      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
271      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
272      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
273    
274    checkpoint59h
275    o pkg/exf:
276      - improve vectorization by moving if-statement out of loops in
277        exf_mapfields, exf_radiation
278      - exf_bulkformulae.F: introduce 2D fields and vectorize code
279    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
280    o testreport:
281      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
282        monitor & update offline_exf_seaice exp. output.
283      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
284    o pkg/seaice:
285      - bug fix in the evp solver: boundary conditions were affected be
286        masking of zMax/zMin (changes results)
287      - minor bug fix in boundary conditions in seaice_calc_strainrates
288        (changes results for no_slip)
289      - seaice_lsr.F: make interpolation of eta dependent on boundaries
290      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
291      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
292        stress formulation and no-slip boundary conditions
293    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
294      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
295    o pkg/seaice: a first HSALT time stepping equation has been checked in
296    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
297      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
298      without requiring DO-IF statements
299    o pkg/thsice:
300      use continuous power-law function for partition of energy between lateral
301      melting/freezing and thinning/thickening ; old code using step function
302      still available with #undef THSICE_FRACEN_POWERLAW
303      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
304    o testreport: change AD testing : check against results/output_adm.txt
305      using same scripts as for forward test.
306    
307    checkpoint59g
308    o adjoint testing: in preparation for changing testreport:
309      - output format: cost and grad written on separated lines
310      - ad output results in directory "results" (instead of "results_ad")
311    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
312    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
313    o pkg/ecco: allow user defined cost function contributions
314    o testreport:
315      Allow to choose (per experiment) the list of tested output variables
316       and the main variable (used to issue a pass/FAIL ) ;
317      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
318      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
319      Also modify printing of summary:
320       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
321       b) echo the list of tested variables in the individual summary.txt of
322          each experiment.
323    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
324      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
325      (but still depend on the tile decompostion of the domain).
326    o pkg/seaice: change a discretization detail to make the B-grid code
327      "more symmetric". This change is likely to remove all "ridges/leads" that
328      where quasi-aligned with the grid in B-grid solutions. It may also be
329      the solution to the stress coupling issues with the B-grid.
330    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
331      remove .cvsignore from input dir. (since testreport no longer run here).
332    o pkg/thsice:
333     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
334     - fix reshaping of sea-ice just after advection:
335       melt all the ice only if ice-volume is too small.
336     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
337       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
338     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
339    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
340      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
341    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
342      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
343      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
344      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
345      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
346      -> update output.txt
347    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
348     this affects truncation error: -> update output.txt of exp:
349      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
350      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
351    
352    checkpoint59f
353    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
354    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
355      a bounded range (in forward mode)
356    o pkg/ecco, ctrl, autodiff and mom_common:
357     internal parameter controls, completements of implementations
358    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
359    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
360      (not seem any difference in testing results).
361    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
362       at face corners.
363    o pkg/generic_advdiff:
364     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
365      loop range indices for computing vertical advection tendency
366      and do the calculation in the interior only (no overlap) ;
367      for now, only implemented for SOM advection (to save CPU time).
368     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
369    o exch2 adjoint
370      First set of changes:
371      - add exch2 hand-written adjoint templates
372      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
373        This will require cleanup in pkg/autodiff/*.F
374        (changed routines currently kept separate in verif. code/)
375      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
376        that used to hide exch2 or cubed-sphere specific code
377        (commented via 'cph-exch2')
378    o pkg/seaice
379      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
380    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
381       output of global_ocean.cs32x15.thsice .
382    
383    checkpoint59e
384    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
385      for B-grid vector (not yet tested) and C-grid vector (<- only used
386      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
387    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
388      (#ifdef ALLOW_SALT_PLUME)
389    o gather_2d/scatter_2d: removed halo regions
390    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
391      scheme and the corresponding test case (under front_relax dir). For now,
392      only available with Skew-flux form and not yet tested in realistic set-up.
393      adjoint: store directives updated, but gradient checks deteriorated,
394      so maybe GM/Redi adjoint is now broken.
395    o seaice adjoint
396      * add AREA, HEFF, HSNOW as control variable
397        (should not change lab_sea results)
398      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
399    o pkg/seaice:
400      * added computation of saltFlux in seaice_growth;
401        For time being, sea ice salinity is assumed constant
402        contribution of snow flooding to freshening of sea ice is neglected.
403        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
404        defaults to 0.0 in order to maintain backward compatibility.
405        Typical values for SEAICE_salinity are 4 to 10 g/kg.
406      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
407      * added SEAICE_availHeatFrac, which specifies fraction of surface level
408        heat content used to melt or grow ice
409      * commented out cap of HICE: it helps keep ice thinner
410      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
411      * applied OBCS T/S mask to HEFFM sea ice mask
412    
413    checkpoint59d
414    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
415     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
416     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
417    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
418     and change default value of parameter "GM_Small_Number";
419     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
420       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
421       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
422    o pkg/ecco: cost function when applying pkg/smooth to controls
423    o pkg/ctrl: add forcingPrecond run time parameter
424    o pkg/seaice:
425     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
426     - fix bug in metric terms of u-equation in LSR solver (implicit part),
427       changes verification/lab_sea
428     - rearrange implicit part of u-equation in LSR solver to make it easier to
429       read, understand, and debug. This causes changes at the truncation level.
430     - fix (serious) bug in the boundary conditions (sign error in the implicit
431       part) of the LSR solver. Changes all LSR results.
432     - fixed problem with HSNOW initialization to avoid thick snow when AREA
433       is initilized with small values - does not change lab_sea results.
434     - added HsnowFile initialization capability
435    o pkg/smooth: addition to model/src and pkg/ctrl so allow
436     initialization of pkg/smooth and application to control vector
437    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
438    o dependencies: pkg/profiles requires pkg/cal
439    o pkg/profiles:
440     - added option ALLOW_PROFILES_GENERICGRID
441         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
442         that interpolation information (grid points and coefficients) is provided
443         within the netcdf input files.
444         -> sample matlab scripts can be found in MITgcm_contrib/gael
445         that allow you to prepare netcdf input files.
446     - also modified: cleaner include statements, cleaner error print statements,
447       cleaner stops when error, and more tests of the netcdf input files consistency.
448    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
449    o pkg/seaice:
450     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
451       requires a new routine: seaice_diagnostics_fill.F
452     - make sure that seaice does not move if not forced (pressure replacement
453       method, Hibler and Ip, 1995), changes results
454     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
455     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
456       It is turned off by default (=-1.), because it changes the results.
457     - make it possible to read AREA from a file, too.
458    
459    checkpoint59c
460    o add S/R and diagnostics for oceanic mixed-layer depth
461    o move GMRedi call after all vertical mixing schemes (including KPP)
462    o pkg/thsice:
463     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
464      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
465    o pkg/obcs:
466     - bug fix for balance code
467    o pkg/seaice:
468      - allow values of SEAICE_elasticParm > 1
469      - add new parameter SEAICE_evpTauRelax as an alternative
470        to SEAICE_elasticParm
471      - make lsr boundary conditions free slip (by default), changes result
472      - add code for no slip boundary conditions for lsr
473      - set minimum of zeta to zero (and not 4e8) (changes results)
474      - add a cap on AREA after advecting AREA if seaice_growth is not called
475    o change calculation of Visbeck K:
476      - no longer depend on tapering scheme; instead, compute slope (limited
477        by GM_maxSlope). this is equivalent to what was comuted before with
478        clipping or linear tappering.
479      - fix vertical averaging (wrong by 1/2 level)
480      - leave the old version (but will not be maintained) within
481        #ifdef OLD_VISBECK_CALC / #endif
482      - update output of exp. ideal_2D_oce
483    o change error catch in calc_r_star to improve vectorization
484    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
485      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
486    o adjoint:
487      Re-organized adjoint checkpointing according to Matt Mazloff
488      (but with modifs/completions/cleanups)
489      Storing is now bundled into large arrays to optimized I/O
490      (and second step in cleanup of the_main_loop)
491    
492    checkpoint59b
493    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
494      - export/import (between ocean & coupler) fields needed for ocean DIC.
495    o pkg/seaice:
496      - get rid of three more exchanges seaice_calc_viscosities (required
497        different loop boundaries in seaice_lsr and seaice_ocean_stress)
498      - bug fix in seaice_ocean_stress (update of lab_sea required)
499      - reduce loop boundaries to necessary minimum also in seaice_evp
500      - go back to the old way of computing deltaC/Z as the adjoint likes that
501        better
502    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
503      passive tracer to an Age Tracer) + update output.txt
504    o pkg/exf:
505      - implement A-grid / C-grid selection for wind-stress input files.
506      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
507      for now, in exf_bulk_largeyeager04.F only :
508      - change implementation for case where windspeed + 2. components wind-stress
509        are read-in. AND use rhoConstFresh to convert evap.
510    o pkg/seaice:
511      - use correct EXCH_UV for wind-forcing (on A-grid).
512      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
513        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
514    o pkg/exf:
515      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
516      EXF_INTERPOLATION:
517      - merge global_with_exf/code version of exf_interp_read.F
518        to the main code ;
519      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
520        reading the file ; Important: This options needs to be defined to recover
521        previous code.
522        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
523      - no longer loose real*8 precision along the way when using exf_iprec=64.
524    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
525      - change discretisation of evp-solver in order to avoid another exchange
526        (changes lab_sea) and clean up a little
527      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
528        help the adjoint (this also changes the results slightly)
529      - add a few "_d 0" where they had been missing in seaice_evp.F
530      - cleaning up: remove unused seaice_calc_rhs.F
531    o pkg/exf: some cleaning-up:
532      - change various "constants" into runtime parameters
533      - cleaned-up Large&Yeager04 routine which should eventually
534        replace exf_bulkformulae.F (changed names of S/R and CPP)
535        and merged various ALLOW_ATM_WIND options
536     only used with thsice pkg (in thsice_get_exf.F):
537      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
538        which are used when useStabilityFct_overIce=TRUE (= the default)
539      - change default values of ice & snow emissivity and scale downward LW
540        by ice & snow emissivity.
541    o pkg/thsice:
542     fix few little problems, in thsice_calc_thickn.F:
543      - growth vertically (and not laterally) if iceFrac == iceMaskMax
544      - melt only laterally if hIce < hThinIce (as the comments say)
545      and in thsice_extend.F:
546      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
547      - start to form ice as soon as the minimum ice-volume is reachable.
548     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
549      and cpl_aim+ocn
550    o pkg/kpp
551     - move computation of surface related input fields to KPP into a new
552       subroutine kpp_forcing_surf.F
553     - remove wrong (within bi,bj loops) EXCH calls.
554     - little cleaning (add argument myThid in last position, cvs header ...)
555     - for now, fix conservation problem by exchanging KPPviscAz (may not
556       be the best fix)
557    o pkg/seaice
558     - check for inconsistent evp parameter/cpp-flag combination
559     - remove leftover errIO flat for obsolete name list error handling
560    o OpenAD
561     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
562    
563    checkpoint59a
564    o pkg/seaice: some parameter clarifications and a little bit of clean up
565    o pkg/thsice: rename run-time parameters:
566       himin       -> hIceMin
567       himin0      -> hThinIce
568       hihig       -> hThickIce
569       i0          -> i0swFrac
570       transCoef   -> bMeltCoef
571       frac_energy -> fracMelting
572      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
573       with default values (for now) that do not change the results.
574      remove old version of thsice vars advection in pkg/seaice.
575    o in FFIELDS.h:
576      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
577      - make pLoad & sIceLoad always available (but still only used if
578         ATMOSPHERIC_LOADING is #define).
579    o pkg/kpp: replaced _KPP_RL with _RL
580    o bug fixes for vertical diffusivity computations when both KPP and
581        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
582        are no longer updating the vertical diffusivity array
583        (passed as argument) but are (re-) setting those arrays.
584    o pkg/seaice: fix bug in evp solver, while doing that
585      - change (improve?) discretization of stress computations for both
586        cgrid-lsr and evp solver
587      - add a new routine to compute strain rates
588      - the above changes lab_sea results
589      - add no slip conditions for evp solver (off by default), lsr-version
590        may follow
591      - fix exchange for shear at Z-points (does not change lab_sea)
592      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
593        (to force the user to pick a time step since there is not "safe" way
594        of choosing it)
595      - add principal stress diagnostics
596      - rearrange fields for evp a little to avoid having to call a: too many
597        exchanges and b: exchanges for stress trensor components which we do
598        not have.
599      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
600        of evp, complete rewrite for lsr case (latter is does not yet work
601        in all cases)
602    o pkg/kpp: add code to have mixing in shelf ice caverns
603      - add myThid to all kpp routines (long overdue)
604    
605    checkpoint59
606    o pkg/exf:
607      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
608        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
609      - move exf header files from lower_case.h to UPPER_CASE.h ;
610        add missing cvs Header & Name
611      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
612      - add namelist param. selectStressGridPosition, exf_monFreq
613      - retire many _CLIM routines, and remove data.exf_clim
614        + params moved to data.exf
615        + climsst, climsss now handled by exf_set_gen, i.e.
616          climss?period=0 refers to constant field,
617          climss?period=-12 to monthly forcing
618      - split up namelists in data.exf
619    o pkg/seaice:
620      - remove seaice_exch and seaice_exch_uv
621      - remove superfluous exchange of theta
622      - add myThid to seaice_budget_ocean/ice
623      - add new interface for atmospheric wind forcing (C-grid only)
624        + new routine
625        + two new field (taux, tauy for stress over ice)
626        + removed one global field (DAIRN) for C-grid case only
627    o pkg/thsise
628      - 2nd set of modifs for thsice adjoint in conjunction with exf
629    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
630    
631    checkpoint58y_post
632    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
633      vertical diffusivity, similar to that in MOM4; turned on using
634      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
635      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
636    o Added capability for 3D specification of background vertical diffusion
637      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
638      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
639      "data" file that contains the 3D vertical diffusivity coefficients.
640    o ice dynamics (pkg/seaice) with thsice thermodynamics:
641      - add code within pkg thsice to advect & diffuse sea-ice fields
642      similar to (and will replace) what has been added in  seaice_advdiff.F,
643      but: - conserving Mass, Heat & Salt.
644           - better when using non-linear advection scheme (not yet fully tested)
645           - can also be used in atmospheric set-up (for now, only the diffusion).
646    
647    checkpoint58x_post
648    o IO option for global-file compact format:
649      - add options when generating topology (utils/exch2/matlab-topology-generator)
650      - add I/O capability (pkg/mdsio).
651      - adapt utils/matlab/rdmds.m to read this format.
652      for now long-line format not yet supported by pkg/mdsio (& exch2).
653    o shelfice: add a few diagnostics
654    
655    checkpoint58w_post
656    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
657      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
658      (and replace horiVertRatio in NH code).
659      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
660                         and tutorial_plume_on_slope (sensitive to truncation)
661    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
662      directly to drive seaice model (C-grid only)
663    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
664     - reintroduce computation of wind from stress,
665     - compute tau (in exf_bulkformulae.F) from windstress averaged to
666       mass points to avoid tau = 0
667     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
668    o rdmnc.m: make it work with "global" files created with gluemnc
669    o rdmnc.m : some improvements in dealing with singleton dimension
670      (tested on all testreport mnc output files).
671    o genmake2: disable pkg/profiles if netcdf test fails.
672    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
673    o move call to cal_readparms up to make calendar parameters/variable available
674      to all packages
675    
676    checkpoint58v_post
677    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
678      useDynP_inEos_Zc tested.
679    o pkg/exf: changes to properly interpolate/mask/scale initial fields
680    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
681      and portions thereof.  See read_cs.txt for description and examples.
682    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
683      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
684      following the great-circle arc between those 2 points.
685    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
686      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
687    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
688     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
689     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
690     - still needs work (not working with some options ; efficiency to improve)
691       and serious testing.
692     - use this scheme for temperature & salinity in 2 advection test exp.:
693       advect_xy & advect_xz, respectively.
694    
695    checkpoint58u_post
696    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
697    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
698    o testreport: add option "-skipdir" to skip some test.
699    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
700      momentum calculation.
701    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
702    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
703      remove checkpoint.F and the_correction_step.F (no longer used);
704      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
705    o add option (linFSConserveTr) to correct for tracer source/sink due to
706      Linear Free surface
707  o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine  o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
708  o pkg/thsice: fix reading mnc-pickups  o pkg/thsice: fix reading mnc-pickups
709    

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