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revision 1.758 by jmc, Wed Dec 20 20:47:30 2006 UTC revision 1.972 by jmc, Sun Apr 6 03:37:44 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 pkg/dic: test for "pickup_dic" file when restarting ;
8      if no pickup-file, can restart with a re-initialised pH (same as it did
9      before) providing pickupStrictlyMatch is set to False.
10    o change argument list of S/R PTRACERS_WRITE_PICKUP & MYPACKAGE_WRITE_PICKUP
11      + fix call to S/R GGL90_WRITE_PICKUP & DIC_WRITE_PICKUP
12    o add a "warning" (to Error msg file) when an Active Tracer is not using AB-2
13      and staggerTimeStep is off (needed for stability of Internal-wave dynamics).
14    o move out of PARAMS.h & data the last pieces of old-ptracer code: tauTr1ClimRelax,
15     & lambdaTr1ClimRelax ; put those 2 params in PTRACERS_PARAMS.h & data.ptracers
16       (note: not clear to me what lambdaTr1ClimRelax is still used for ...)
17    o pkg/mom_vecinv: - new parameter "selectVortScheme" to select which
18       scheme to use for vorticty-term ;
19     - compute upwindVorticity=T case within mom_vi_u/v_coriolis_c4.F
20       (with default selectVortScheme, return to original discretisation)
21     - remove weird combination (e.g.: upwindVorticity & highOrderVorticity)
22    o pkg/seaice: add a line to the summary to indicate grid type (B/C)
23    o in mom_calc_visc, fix average value of viscAh_W & viscA4_W next to the
24      bottom ; only used with variable horizontal viscosity and non-hydrostatic.
25      also fix diagnostics VISCAHW & VISCA4W.
26    
27    checkpoint59o
28    o dome/code/obcs_calc.F: avoid division by zero (detected using gfortran).
29    o change the loop ordering in most gad_*_adv_x.F to improve vectorization:
30      move a few statemens out the main loop into separate loops
31    o pkg/shelfice:
32      - sort out freshwater flux; convert freshwater fluxes to mass fluxes
33        (kg/m^2/s), does not break tests, because in verification/isomip,
34        rhoConstFresh=rhoConst (by accident)
35      - rearrange computation of tLoc, sLoc, pLoc to make code more efficient
36      - move S/R find_rho_scalar, pkg/ecco/sw_ptmp.F, pkg/ecco/sw_adtg.F into
37        new file model/src/seawater.F, so that they are available for all pkgs.
38      - convert potential temperature into in-situ temperature. This changes the
39        isomip tests => update tests
40    o add a flag writePickupAtEnd (default=true) to be able to suppress
41      writing a pickup at the last timestep
42    o tools/mpack-1.6 :
43      - disable automake (not working) and autoconf (not needed).
44      - update to version 1.6.4 which fix MD5 code on some 64 bits platforms
45        also cleaner with much less compilation warnings.
46    o pkg/profiles:
47      rename profiles_interp_mean_genericgrid as profiles_interp_mean_gg
48      (for "less than 32 characters name" compiler requirement)
49    o pkg/obcs and pkg/exf: added capability to specify seaice open boundary
50      conditions that have a different sampling frequency than S/T/U/V obcs
51    o pkg/diagnostics (stats-diags):
52      - fix global Min/Max in case 1 processor get only empty tiles
53    o genmake2: replace (4 times)
54         make genmake_tc_1.o >> genmake_warnings 2>&1
55      with
56         COMM="$CC $CFLAGS -c genmake_tc_1.c"
57         echo $COMM >> genmake_warnings
58         $COMM >> genmake_warnings 2>&1
59      to make genmake2 always see the value of CC as specified in the optfile.
60    o generic_advdiff: - prather advection scheme (SOM) coded for CS-grid.
61      - add diagnostics for 1srt & 2nd Order moments and sub-grid variance.
62      - modify verification advect_cs test to test SOM-advection on CS-grid.
63    o pkg/ctrl:
64      - Rewrite of ctrl_map_ini_ecco.F,
65        introducing a generic routine (ctrl_map_ini_gen.F).
66      - Modification of ctrl_bound/adctrl_bound handling control vector bounds.
67    
68    checkpoint59n
69    o pkg/diagnostics: for large number of diagnostics, store diagnostic mate
70      number in dedicate array "hdiag":
71      - new version of S/R DIAGNOSTICS_ADD2LIST : DIAGNOSTICS_ADDTOLIST
72        with 1 more argument (mate number); modify old version DIAGNOSTICS_ADD2LIST.
73      - many small changes (integer format) for large number of diagnostics
74      - start to use DIAGNOSTICS_ADDTOLIST (necessary for diagnostics with
75        a counter mate) in pkg diagnostics, ptracers, thsice & aim_v23.
76    o add parameter rotateGrid and Euler angles EulerPhi/Theta/Psi. For
77      usingSphericalGrid, this allows to define the rotated grid coordinates
78      via phiMin/thetaMin/dxSpacing/dySpacing, etc., but then re-compute the
79      geographical coordinates according to the inverse of the rotation defined
80      by the Euler angles, so that Coriolis parameter and online-interpolation by
81      exf works with the geographical coordinates on XC/YC/XG/YG.
82      Naturally, this feature does not work with all packages, so some
83      combinations are prohibited in config_summary (flt, flt_zonal, ecco,
84      profiles), because there the coordinates are assumed to be regular
85      spherical grid coordinates.
86    o pkg/gmredi,ctrl,ecco,autodiff,grdchk and model/src,inc:
87      - introduce isopycnal diffusion coefficient control.
88    o tools/adjoint_options:
89      - additional control vector components.
90    o pkg/mnc: have mnc create marginally meaning full coordinate variables
91      (that is the grid indices) if usingCurvilinearGrid and NOT EXCH2
92    o pkg/mypackage:
93      - add example of read/write pickup for state-var ;
94      - add entry points to the main code for state-vars diags & write-pickup.
95    o pkg/exf: rewrite of exf_getffieldrec.F to properly deal with year
96      transitions for useExfYearlyFields
97      - add new subroutine that determines the file to read from for
98        use*YearlyFields = .TRUE. and .FALSE.
99      - add a verification experiment to global_with_exf that tests
100        useExfYearlyFields with USE_EXF_INTERPOLATION defined
101    o pkg/obcs/exf: add useOBCSYearlyFields (=.FALSE.) to obcs with exf in
102      analogy to useExfYearlyFields; rearrange obcs_prescribe_read: two new
103      subroutines (which could be generated from a template, because they are
104      almost identical), for now they are included in obcs_prescribe_read.F for
105      simplicity
106    o pkg/exf:
107      - add a little more diagnostic to exf_interp_read (in analogy to
108        mds_read_field, can be turned off with debugLevel < debugLevA=1)
109      - improve vectorizability of exf_interp for TARGET_NEC_SX, makes code
110        ugly but fast by unrolling short inner loops, inserting a unroll=8
111        directive in routine lagran, and splitting a loop and making do while the
112        outermost loop (the latter requires the intoduction of index arrays)
113    o pkg/obcs: replace obcs_apply_area/heff/hsalt/hsnow with obcs_apply_seaice
114    o pkg/seaice: moved DIFFERENT_MULTIPLE from seaice_model to seaice_dynsolver
115      http://forge.csail.mit.edu/pipermail/mitgcm-devel/2008-January/003173.html
116    o verification/seaice_obcs: updated for restart test and latest options
117    o pkg/seaice: add a new flag SEAICEuseTEM to use a slightly different
118      ice rheology (so-called truncated ellipse, that gets rid of tensile stress);
119      for now this is only available for the C-grid code and also within
120      #ifdef SEAICE_ALLOW_TEM, because this option may slow down the EVP code
121    
122    checkpoint59m
123    o pkg/seaice: use different time constant for melting (SEAICE_gamma_t)
124      and freezing (SEAICE_gamma_t_frz) ice due to mixed layer temperature
125    o gad_som : fix flux output (& diagnostics) to have same units as other  
126      advection scheme fluxes (was previously multiplied by deltaT).  
127    o added verification/seaice_obcs both to test seaice open boundaries
128      and to provide an example matlab scrpt for generating them
129    o added verification/lab_sea/input.salt_plume for testing pkg/salt_plume
130    o pkg/salt_plume: clean up salt_plume_frac.F to
131      remove redundancy in PlumeMethod 1 and 4
132    o pkg/kpp: added saltplume diagnostics
133    o pkg/obcs and pkg/seaice:
134      - do not set uice and vice to zero when OB*icefile are unspecified
135      - OBCS_SEAICE_AVOID_CONVERGENCE is undefined by default
136      - moved seaice tracer obcs after call to seaice_growth
137    o pkg/salt_plume: added various options for salt plume depth
138      criterion and for vertical distribution of the salt
139    
140    checkpoint59l
141    o pkg/ptracers: new version of ptracers pickup:
142      read meta file and write only fields which are needed to restart.
143      ( same logic as main pickup file ; also using pickupStrictlyMatch )
144    o pkg/seaice:
145      - add timescale for melting due to warm mixed layer as a means of
146        setting SEAICE_availHeatFrac more conveniently
147      - add a CPP-flag/runtime parameter check for flooding algorithm
148      - reformulated availHeat in seaice_growth.F to be independent of AREA
149    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
150      unit changes
151    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
152    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
153      SX vector computer.
154    o pkg/seaice:
155      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
156        seaice forcing fields can now be read only through pkg/exf
157      - removed some unused halos
158    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
159    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
160      or U/VICE from U/VWIND before computing U/VSTRESS
161    
162    checkpoint59k
163    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
164      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
165    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
166      all experiments pass when compile with un-initialised var. checking option.
167    o added pkg/salt_plume
168    o script to test restart (for now, in MITgcm_contrib/jmc_script)
169    o pkg/seaice: new read/write pickup version.
170      read meta file and write only fields which are needed to restart.
171      ( same logic as main pickup file ; also using pickupStrictlyMatch )
172    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
173    o lab_sea.hb87: modify the domain & update output.hb87.txt :
174      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
175      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
176      process. Fixed here by closing the domain at the Northern boundary.
177    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
178    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
179      a set of consecutive levels in/from a 3-D array.
180    o pkg/ptracers:
181      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
182      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
183    
184    checkpoint59j
185    o in pkgs: dic, obcs, offline, rbcs:
186      standard way to compute coeff. for time interpolation between 2 time reccords
187      which retains full precision (& make results less dependent on compiler).
188      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
189    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
190      packages instead of reading ice cover and wind speed separately
191    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
192     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
193      to allow to compile customized code before the update)
194    o cleaning-up:
195      - fix CPP instruction syntax in pkg/obcs
196      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
197        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
198      - fix some threads issue in IO parts.
199    o pkg/dic:
200      - add tons of "_d 0" (--> much better testreports !)
201       and then update outputs of tutorial_global_oce_biogeo
202    o pkg/mom_fluxform:
203      add a special version of momentum advection intended to conserve momentum
204      next to a bathymetry step or a coastline edge. (default = off = #undef)
205    o new read/write pickup version:
206      - for now, only implemented for main (mdsio) pickup file.
207      - write out only what is needed to restart; merge pickup_nh , pickup_ph
208        and main pickup together.
209      - read meta file; read only what is needed to restart; stop if a field
210        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
211        if it make sense (even if the restart is not perfect).
212      - if no meta file, assume that pickup to read corresponds exactly to
213        a pickup that would currently be written.
214      - read pickup written in the old format (until checkpoint59i) if it
215        recognizes an old meta file (no field-list).
216      - add a meta file in exp. which starts from a pickup: 2 cases:
217        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
218         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
219        b) a meta file describing the content of the associated pickup file
220         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
221    o pkg/mdsio & pkg/rw:
222      - new routine to read a meta file ; new set of routine to read
223        Multiple-fields file (with meta file).
224    o added open boundary conditions capability for seaice
225        HSNOW, HSALT, UICE, and VICE
226    
227    checkpoint59i
228    o adjoint:
229      * fix multiDimAdvection adjoint
230        (partial recomputation problem by TAF for fVerT(:,:,kDown)
231        and comlev1 size definition (maxpass vs. max. number of tracers)
232      * verification/global_ocean.90x45x15 adjoint now tests
233        NLFS and multiDimAdvection using DST3 (=30)
234      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
235    o pkg/kpp: add "_d 0" to real constant (if missing);
236      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
237      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
238    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
239      for internal parameters related to restart process (formerly from PARAMS.h)
240      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
241    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
242      as argument. (only atm2d & obcs write_pickup have not yet been updated)
243    o pkg/monitor:
244      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
245      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
246      - account for deep Atmosphere factor and density factor (anelastic)
247    o added open boundary conditions capability for seaice HEFF and AREA
248    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
249      thermodynamics
250      - requires a little reorganization, which affects the testreport results
251        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
252        so that now the conservative form is tested
253      - add a few comments
254    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
255    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
256    o add new diagnostics to seaice: advective, diffusive fluxes (only for
257      multidim-advection, for scheme 2 they are not filled) and transports,
258      thermodynamic growth rates
259    o change units of EmPmR (inside the code, + within coupling interface)
260      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
261      Affects results @ truncation level (cg2d match) and update output of
262       experiments: lab_sea(6), global_ocean.90x40x15(10),
263      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
264      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
265      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
266      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
267    
268    checkpoint59h
269    o pkg/exf:
270      - improve vectorization by moving if-statement out of loops in
271        exf_mapfields, exf_radiation
272      - exf_bulkformulae.F: introduce 2D fields and vectorize code
273    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
274    o testreport:
275      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
276        monitor & update offline_exf_seaice exp. output.
277      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
278    o pkg/seaice:
279      - bug fix in the evp solver: boundary conditions were affected be
280        masking of zMax/zMin (changes results)
281      - minor bug fix in boundary conditions in seaice_calc_strainrates
282        (changes results for no_slip)
283      - seaice_lsr.F: make interpolation of eta dependent on boundaries
284      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
285      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
286        stress formulation and no-slip boundary conditions
287    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
288      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
289    o pkg/seaice: a first HSALT time stepping equation has been checked in
290    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
291      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
292      without requiring DO-IF statements
293    o pkg/thsice:
294      use continuous power-law function for partition of energy between lateral
295      melting/freezing and thinning/thickening ; old code using step function
296      still available with #undef THSICE_FRACEN_POWERLAW
297      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
298    o testreport: change AD testing : check against results/output_adm.txt
299      using same scripts as for forward test.
300    
301    checkpoint59g
302    o adjoint testing: in preparation for changing testreport:
303      - output format: cost and grad written on separated lines
304      - ad output results in directory "results" (instead of "results_ad")
305    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
306    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
307    o pkg/ecco: allow user defined cost function contributions
308    o testreport:
309      Allow to choose (per experiment) the list of tested output variables
310       and the main variable (used to issue a pass/FAIL ) ;
311      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
312      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
313      Also modify printing of summary:
314       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
315       b) echo the list of tested variables in the individual summary.txt of
316          each experiment.
317    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
318      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
319      (but still depend on the tile decompostion of the domain).
320    o pkg/seaice: change a discretization detail to make the B-grid code
321      "more symmetric". This change is likely to remove all "ridges/leads" that
322      where quasi-aligned with the grid in B-grid solutions. It may also be
323      the solution to the stress coupling issues with the B-grid.
324    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
325      remove .cvsignore from input dir. (since testreport no longer run here).
326    o pkg/thsice:
327     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
328     - fix reshaping of sea-ice just after advection:
329       melt all the ice only if ice-volume is too small.
330     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
331       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
332     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
333    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
334      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
335    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
336      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
337      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
338      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
339      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
340      -> update output.txt
341    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
342     this affects truncation error: -> update output.txt of exp:
343      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
344      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
345    
346    checkpoint59f
347    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
348    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
349      a bounded range (in forward mode)
350    o pkg/ecco, ctrl, autodiff and mom_common:
351     internal parameter controls, completements of implementations
352    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
353    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
354      (not seem any difference in testing results).
355    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
356       at face corners.
357    o pkg/generic_advdiff:
358     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
359      loop range indices for computing vertical advection tendency
360      and do the calculation in the interior only (no overlap) ;
361      for now, only implemented for SOM advection (to save CPU time).
362     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
363    o exch2 adjoint
364      First set of changes:
365      - add exch2 hand-written adjoint templates
366      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
367        This will require cleanup in pkg/autodiff/*.F
368        (changed routines currently kept separate in verif. code/)
369      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
370        that used to hide exch2 or cubed-sphere specific code
371        (commented via 'cph-exch2')
372    o pkg/seaice
373      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
374    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
375       output of global_ocean.cs32x15.thsice .
376    
377    checkpoint59e
378    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
379      for B-grid vector (not yet tested) and C-grid vector (<- only used
380      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
381    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
382      (#ifdef ALLOW_SALT_PLUME)
383    o gather_2d/scatter_2d: removed halo regions
384    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
385      scheme and the corresponding test case (under front_relax dir). For now,
386      only available with Skew-flux form and not yet tested in realistic set-up.
387      adjoint: store directives updated, but gradient checks deteriorated,
388      so maybe GM/Redi adjoint is now broken.
389    o seaice adjoint
390      * add AREA, HEFF, HSNOW as control variable
391        (should not change lab_sea results)
392      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
393    o pkg/seaice:
394      * added computation of saltFlux in seaice_growth;
395        For time being, sea ice salinity is assumed constant
396        contribution of snow flooding to freshening of sea ice is neglected.
397        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
398        defaults to 0.0 in order to maintain backward compatibility.
399        Typical values for SEAICE_salinity are 4 to 10 g/kg.
400      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
401      * added SEAICE_availHeatFrac, which specifies fraction of surface level
402        heat content used to melt or grow ice
403      * commented out cap of HICE: it helps keep ice thinner
404      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
405      * applied OBCS T/S mask to HEFFM sea ice mask
406    
407    checkpoint59d
408    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
409     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
410     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
411    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
412     and change default value of parameter "GM_Small_Number";
413     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
414       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
415       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
416    o pkg/ecco: cost function when applying pkg/smooth to controls
417    o pkg/ctrl: add forcingPrecond run time parameter
418    o pkg/seaice:
419     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
420     - fix bug in metric terms of u-equation in LSR solver (implicit part),
421       changes verification/lab_sea
422     - rearrange implicit part of u-equation in LSR solver to make it easier to
423       read, understand, and debug. This causes changes at the truncation level.
424     - fix (serious) bug in the boundary conditions (sign error in the implicit
425       part) of the LSR solver. Changes all LSR results.
426     - fixed problem with HSNOW initialization to avoid thick snow when AREA
427       is initilized with small values - does not change lab_sea results.
428     - added HsnowFile initialization capability
429    o pkg/smooth: addition to model/src and pkg/ctrl so allow
430     initialization of pkg/smooth and application to control vector
431    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
432    o dependencies: pkg/profiles requires pkg/cal
433    o pkg/profiles:
434     - added option ALLOW_PROFILES_GENERICGRID
435         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
436         that interpolation information (grid points and coefficients) is provided
437         within the netcdf input files.
438         -> sample matlab scripts can be found in MITgcm_contrib/gael
439         that allow you to prepare netcdf input files.
440     - also modified: cleaner include statements, cleaner error print statements,
441       cleaner stops when error, and more tests of the netcdf input files consistency.
442    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
443    o pkg/seaice:
444     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
445       requires a new routine: seaice_diagnostics_fill.F
446     - make sure that seaice does not move if not forced (pressure replacement
447       method, Hibler and Ip, 1995), changes results
448     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
449     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
450       It is turned off by default (=-1.), because it changes the results.
451     - make it possible to read AREA from a file, too.
452    
453    checkpoint59c
454    o add S/R and diagnostics for oceanic mixed-layer depth
455    o move GMRedi call after all vertical mixing schemes (including KPP)
456    o pkg/thsice:
457     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
458      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
459    o pkg/obcs:
460     - bug fix for balance code
461    o pkg/seaice:
462      - allow values of SEAICE_elasticParm > 1
463      - add new parameter SEAICE_evpTauRelax as an alternative
464        to SEAICE_elasticParm
465      - make lsr boundary conditions free slip (by default), changes result
466      - add code for no slip boundary conditions for lsr
467      - set minimum of zeta to zero (and not 4e8) (changes results)
468      - add a cap on AREA after advecting AREA if seaice_growth is not called
469    o change calculation of Visbeck K:
470      - no longer depend on tapering scheme; instead, compute slope (limited
471        by GM_maxSlope). this is equivalent to what was comuted before with
472        clipping or linear tappering.
473      - fix vertical averaging (wrong by 1/2 level)
474      - leave the old version (but will not be maintained) within
475        #ifdef OLD_VISBECK_CALC / #endif
476      - update output of exp. ideal_2D_oce
477    o change error catch in calc_r_star to improve vectorization
478    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
479      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
480    o adjoint:
481      Re-organized adjoint checkpointing according to Matt Mazloff
482      (but with modifs/completions/cleanups)
483      Storing is now bundled into large arrays to optimized I/O
484      (and second step in cleanup of the_main_loop)
485    
486    checkpoint59b
487    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
488      - export/import (between ocean & coupler) fields needed for ocean DIC.
489    o pkg/seaice:
490      - get rid of three more exchanges seaice_calc_viscosities (required
491        different loop boundaries in seaice_lsr and seaice_ocean_stress)
492      - bug fix in seaice_ocean_stress (update of lab_sea required)
493      - reduce loop boundaries to necessary minimum also in seaice_evp
494      - go back to the old way of computing deltaC/Z as the adjoint likes that
495        better
496    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
497      passive tracer to an Age Tracer) + update output.txt
498    o pkg/exf:
499      - implement A-grid / C-grid selection for wind-stress input files.
500      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
501      for now, in exf_bulk_largeyeager04.F only :
502      - change implementation for case where windspeed + 2. components wind-stress
503        are read-in. AND use rhoConstFresh to convert evap.
504    o pkg/seaice:
505      - use correct EXCH_UV for wind-forcing (on A-grid).
506      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
507        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
508    o pkg/exf:
509      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
510      EXF_INTERPOLATION:
511      - merge global_with_exf/code version of exf_interp_read.F
512        to the main code ;
513      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
514        reading the file ; Important: This options needs to be defined to recover
515        previous code.
516        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
517      - no longer loose real*8 precision along the way when using exf_iprec=64.
518    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
519      - change discretisation of evp-solver in order to avoid another exchange
520        (changes lab_sea) and clean up a little
521      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
522        help the adjoint (this also changes the results slightly)
523      - add a few "_d 0" where they had been missing in seaice_evp.F
524      - cleaning up: remove unused seaice_calc_rhs.F
525    o pkg/exf: some cleaning-up:
526      - change various "constants" into runtime parameters
527      - cleaned-up Large&Yeager04 routine which should eventually
528        replace exf_bulkformulae.F (changed names of S/R and CPP)
529        and merged various ALLOW_ATM_WIND options
530     only used with thsice pkg (in thsice_get_exf.F):
531      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
532        which are used when useStabilityFct_overIce=TRUE (= the default)
533      - change default values of ice & snow emissivity and scale downward LW
534        by ice & snow emissivity.
535    o pkg/thsice:
536     fix few little problems, in thsice_calc_thickn.F:
537      - growth vertically (and not laterally) if iceFrac == iceMaskMax
538      - melt only laterally if hIce < hThinIce (as the comments say)
539      and in thsice_extend.F:
540      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
541      - start to form ice as soon as the minimum ice-volume is reachable.
542     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
543      and cpl_aim+ocn
544    o pkg/kpp
545     - move computation of surface related input fields to KPP into a new
546       subroutine kpp_forcing_surf.F
547     - remove wrong (within bi,bj loops) EXCH calls.
548     - little cleaning (add argument myThid in last position, cvs header ...)
549     - for now, fix conservation problem by exchanging KPPviscAz (may not
550       be the best fix)
551    o pkg/seaice
552     - check for inconsistent evp parameter/cpp-flag combination
553     - remove leftover errIO flat for obsolete name list error handling
554    o OpenAD
555     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
556    
557    checkpoint59a
558    o pkg/seaice: some parameter clarifications and a little bit of clean up
559    o pkg/thsice: rename run-time parameters:
560       himin       -> hIceMin
561       himin0      -> hThinIce
562       hihig       -> hThickIce
563       i0          -> i0swFrac
564       transCoef   -> bMeltCoef
565       frac_energy -> fracMelting
566      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
567       with default values (for now) that do not change the results.
568      remove old version of thsice vars advection in pkg/seaice.
569    o in FFIELDS.h:
570      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
571      - make pLoad & sIceLoad always available (but still only used if
572         ATMOSPHERIC_LOADING is #define).
573    o pkg/kpp: replaced _KPP_RL with _RL
574    o bug fixes for vertical diffusivity computations when both KPP and
575        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
576        are no longer updating the vertical diffusivity array
577        (passed as argument) but are (re-) setting those arrays.
578    o pkg/seaice: fix bug in evp solver, while doing that
579      - change (improve?) discretization of stress computations for both
580        cgrid-lsr and evp solver
581      - add a new routine to compute strain rates
582      - the above changes lab_sea results
583      - add no slip conditions for evp solver (off by default), lsr-version
584        may follow
585      - fix exchange for shear at Z-points (does not change lab_sea)
586      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
587        (to force the user to pick a time step since there is not "safe" way
588        of choosing it)
589      - add principal stress diagnostics
590      - rearrange fields for evp a little to avoid having to call a: too many
591        exchanges and b: exchanges for stress trensor components which we do
592        not have.
593      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
594        of evp, complete rewrite for lsr case (latter is does not yet work
595        in all cases)
596    o pkg/kpp: add code to have mixing in shelf ice caverns
597      - add myThid to all kpp routines (long overdue)
598    
599    checkpoint59
600    o pkg/exf:
601      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
602        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
603      - move exf header files from lower_case.h to UPPER_CASE.h ;
604        add missing cvs Header & Name
605      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
606      - add namelist param. selectStressGridPosition, exf_monFreq
607      - retire many _CLIM routines, and remove data.exf_clim
608        + params moved to data.exf
609        + climsst, climsss now handled by exf_set_gen, i.e.
610          climss?period=0 refers to constant field,
611          climss?period=-12 to monthly forcing
612      - split up namelists in data.exf
613    o pkg/seaice:
614      - remove seaice_exch and seaice_exch_uv
615      - remove superfluous exchange of theta
616      - add myThid to seaice_budget_ocean/ice
617      - add new interface for atmospheric wind forcing (C-grid only)
618        + new routine
619        + two new field (taux, tauy for stress over ice)
620        + removed one global field (DAIRN) for C-grid case only
621    o pkg/thsise
622      - 2nd set of modifs for thsice adjoint in conjunction with exf
623    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
624    
625    checkpoint58y_post
626    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
627      vertical diffusivity, similar to that in MOM4; turned on using
628      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
629      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
630    o Added capability for 3D specification of background vertical diffusion
631      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
632      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
633      "data" file that contains the 3D vertical diffusivity coefficients.
634    o ice dynamics (pkg/seaice) with thsice thermodynamics:
635      - add code within pkg thsice to advect & diffuse sea-ice fields
636      similar to (and will replace) what has been added in  seaice_advdiff.F,
637      but: - conserving Mass, Heat & Salt.
638           - better when using non-linear advection scheme (not yet fully tested)
639           - can also be used in atmospheric set-up (for now, only the diffusion).
640    
641    checkpoint58x_post
642    o IO option for global-file compact format:
643      - add options when generating topology (utils/exch2/matlab-topology-generator)
644      - add I/O capability (pkg/mdsio).
645      - adapt utils/matlab/rdmds.m to read this format.
646      for now long-line format not yet supported by pkg/mdsio (& exch2).
647    o shelfice: add a few diagnostics
648    
649    checkpoint58w_post
650    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
651      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
652      (and replace horiVertRatio in NH code).
653      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
654                         and tutorial_plume_on_slope (sensitive to truncation)
655    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
656      directly to drive seaice model (C-grid only)
657    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
658     - reintroduce computation of wind from stress,
659     - compute tau (in exf_bulkformulae.F) from windstress averaged to
660       mass points to avoid tau = 0
661     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
662    o rdmnc.m: make it work with "global" files created with gluemnc
663    o rdmnc.m : some improvements in dealing with singleton dimension
664      (tested on all testreport mnc output files).
665    o genmake2: disable pkg/profiles if netcdf test fails.
666    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
667    o move call to cal_readparms up to make calendar parameters/variable available
668      to all packages
669    
670    checkpoint58v_post
671    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
672      useDynP_inEos_Zc tested.
673    o pkg/exf: changes to properly interpolate/mask/scale initial fields
674    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
675      and portions thereof.  See read_cs.txt for description and examples.
676    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
677      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
678      following the great-circle arc between those 2 points.
679    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
680      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
681    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
682     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
683     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
684     - still needs work (not working with some options ; efficiency to improve)
685       and serious testing.
686     - use this scheme for temperature & salinity in 2 advection test exp.:
687       advect_xy & advect_xz, respectively.
688    
689    checkpoint58u_post
690    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
691    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
692    o testreport: add option "-skipdir" to skip some test.
693    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
694      momentum calculation.
695    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
696    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
697      remove checkpoint.F and the_correction_step.F (no longer used);
698      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
699    o add option (linFSConserveTr) to correct for tracer source/sink due to
700      Linear Free surface
701    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
702    o pkg/thsice: fix reading mnc-pickups
703    
704    checkpoint58t_post
705    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
706    o pkg/mdsio:
707     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
708       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
709       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
710     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
711     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
712       either MDS_READ_FIELD or MDS_WRITE_FIELD )
713     - new S/R (to replace MDSWRITEMETA), which allows to write more
714       informations (variable names, time ...) to meta files.
715     - modify rdmds.m to give back the meta file content.
716    o pkg/diagnostics: change vertical interpolation to be safer, and more
717       flexible (define p-levels to interpolate to in data.diagnostics);
718      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
719       diagnostic pointer.
720    o pkg/seaice: more cleaning up of seaice_growth, added many comments
721    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
722  o fix multi-category seaice:  o fix multi-category seaice:
723   - change cpp flag SEAICE_MULTILEVEL to more meaningful name:   - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
724     SEAICE_MULTICATEGORY     SEAICE_MULTICATEGORY

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