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revision 1.733 by jmc, Tue Oct 17 19:08:57 2006 UTC revision 1.962 by mlosch, Wed Feb 27 04:35:59 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/shelfice:
8      - sort out freshwater flux; convert freshwater fluxes to mass fluxes
9        (kg/m^2/s), does not break tests, because in verification/isomip,
10        rhoConstFresh=rhoConst (by accident)
11    o add a flag writePickupAtEnd (default=true) to be able to suppress
12      writing a pickup at the last timestep
13    o pkg/profiles:
14      rename profiles_interp_mean_genericgrid as profiles_interp_mean_gg
15      (for "less than 32 characters name" compiler requirement)
16    o pkg/obcs and pkg/exf: added capability to specify seaice open boundary
17      conditions that have a different sampling frequency than S/T/U/V obcs
18    o pkg/diagnostics (stats-diags):
19      - fix global Min/Max in case 1 processor get only empty tiles
20    o genmake2: replace (4 times)
21         make genmake_tc_1.o >> genmake_warnings 2>&1
22      with
23         COMM="$CC $CFLAGS -c genmake_tc_1.c"
24         echo $COMM >> genmake_warnings
25         $COMM >> genmake_warnings 2>&1
26      to make genmake2 always see the value of CC as specified in the optfile.
27    o generic_advdiff: - prather advection scheme (SOM) coded for CS-grid.
28      - add diagnostics for 1srt & 2nd Order moments and sub-grid variance.
29      - modify verification advect_cs test to test SOM-advection on CS-grid.
30    o pkg/ctrl:
31      - Rewrite of ctrl_map_ini_ecco.F,
32        introducing a generic routine (ctrl_map_ini_gen.F).
33      - Modification of ctrl_bound/adctrl_bound handling control vector bounds.
34    
35    checkpoint59n
36    o pkg/diagnostics: for large number of diagnostics, store diagnostic mate
37      number in dedicate array "hdiag":
38      - new version of S/R DIAGNOSTICS_ADD2LIST : DIAGNOSTICS_ADDTOLIST
39        with 1 more argument (mate number); modify old version DIAGNOSTICS_ADD2LIST.
40      - many small changes (integer format) for large number of diagnostics
41      - start to use DIAGNOSTICS_ADDTOLIST (necessary for diagnostics with
42        a counter mate) in pkg diagnostics, ptracers, thsice & aim_v23.
43    o add parameter rotateGrid and Euler angles EulerPhi/Theta/Psi. For
44      usingSphericalGrid, this allows to define the rotated grid coordinates
45      via phiMin/thetaMin/dxSpacing/dySpacing, etc., but then re-compute the
46      geographical coordinates according to the inverse of the rotation defined
47      by the Euler angles, so that Coriolis parameter and online-interpolation by
48      exf works with the geographical coordinates on XC/YC/XG/YG.
49      Naturally, this feature does not work with all packages, so some
50      combinations are prohibited in config_summary (flt, flt_zonal, ecco,
51      profiles), because there the coordinates are assumed to be regular
52      spherical grid coordinates.
53    o pkg/gmredi,ctrl,ecco,autodiff,grdchk and model/src,inc:
54      - introduce isopycnal diffusion coefficient control.
55    o tools/adjoint_options:
56      - additional control vector components.
57    o pkg/mnc: have mnc create marginally meaning full coordinate variables
58      (that is the grid indices) if usingCurvilinearGrid and NOT EXCH2
59    o pkg/mypackage:
60      - add example of read/write pickup for state-var ;
61      - add entry points to the main code for state-vars diags & write-pickup.
62    o pkg/exf: rewrite of exf_getffieldrec.F to properly deal with year
63      transitions for useExfYearlyFields
64      - add new subroutine that determines the file to read from for
65        use*YearlyFields = .TRUE. and .FALSE.
66      - add a verification experiment to global_with_exf that tests
67        useExfYearlyFields with USE_EXF_INTERPOLATION defined
68    o pkg/obcs/exf: add useOBCSYearlyFields (=.FALSE.) to obcs with exf in
69      analogy to useExfYearlyFields; rearrange obcs_prescribe_read: two new
70      subroutines (which could be generated from a template, because they are
71      almost identical), for now they are included in obcs_prescribe_read.F for
72      simplicity
73    o pkg/exf:
74      - add a little more diagnostic to exf_interp_read (in analogy to
75        mds_read_field, can be turned off with debugLevel < debugLevA=1)
76      - improve vectorizability of exf_interp for TARGET_NEC_SX, makes code
77        ugly but fast by unrolling short inner loops, inserting a unroll=8
78        directive in routine lagran, and splitting a loop and making do while the
79        outermost loop (the latter requires the intoduction of index arrays)
80    o pkg/obcs: replace obcs_apply_area/heff/hsalt/hsnow with obcs_apply_seaice
81    o pkg/seaice: moved DIFFERENT_MULTIPLE from seaice_model to seaice_dynsolver
82      http://forge.csail.mit.edu/pipermail/mitgcm-devel/2008-January/003173.html
83    o verification/seaice_obcs: updated for restart test and latest options
84    o pkg/seaice: add a new flag SEAICEuseTEM to use a slightly different
85      ice rheology (so-called truncated ellipse, that gets rid of tensile stress);
86      for now this is only available for the C-grid code and also within
87      #ifdef SEAICE_ALLOW_TEM, because this option may slow down the EVP code
88    
89    checkpoint59m
90    o pkg/seaice: use different time constant for melting (SEAICE_gamma_t)
91      and freezing (SEAICE_gamma_t_frz) ice due to mixed layer temperature
92    o gad_som : fix flux output (& diagnostics) to have same units as other  
93      advection scheme fluxes (was previously multiplied by deltaT).  
94    o added verification/seaice_obcs both to test seaice open boundaries
95      and to provide an example matlab scrpt for generating them
96    o added verification/lab_sea/input.salt_plume for testing pkg/salt_plume
97    o pkg/salt_plume: clean up salt_plume_frac.F to
98      remove redundancy in PlumeMethod 1 and 4
99    o pkg/kpp: added saltplume diagnostics
100    o pkg/obcs and pkg/seaice:
101      - do not set uice and vice to zero when OB*icefile are unspecified
102      - OBCS_SEAICE_AVOID_CONVERGENCE is undefined by default
103      - moved seaice tracer obcs after call to seaice_growth
104    o pkg/salt_plume: added various options for salt plume depth
105      criterion and for vertical distribution of the salt
106    
107    checkpoint59l
108    o pkg/ptracers: new version of ptracers pickup:
109      read meta file and write only fields which are needed to restart.
110      ( same logic as main pickup file ; also using pickupStrictlyMatch )
111    o pkg/seaice:
112      - add timescale for melting due to warm mixed layer as a means of
113        setting SEAICE_availHeatFrac more conveniently
114      - add a CPP-flag/runtime parameter check for flooding algorithm
115      - reformulated availHeat in seaice_growth.F to be independent of AREA
116    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
117      unit changes
118    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
119    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
120      SX vector computer.
121    o pkg/seaice:
122      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
123        seaice forcing fields can now be read only through pkg/exf
124      - removed some unused halos
125    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
126    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
127      or U/VICE from U/VWIND before computing U/VSTRESS
128    
129    checkpoint59k
130    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
131      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
132    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
133      all experiments pass when compile with un-initialised var. checking option.
134    o added pkg/salt_plume
135    o script to test restart (for now, in MITgcm_contrib/jmc_script)
136    o pkg/seaice: new read/write pickup version.
137      read meta file and write only fields which are needed to restart.
138      ( same logic as main pickup file ; also using pickupStrictlyMatch )
139    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
140    o lab_sea.hb87: modify the domain & update output.hb87.txt :
141      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
142      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
143      process. Fixed here by closing the domain at the Northern boundary.
144    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
145    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
146      a set of consecutive levels in/from a 3-D array.
147    o pkg/ptracers:
148      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
149      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
150    
151    checkpoint59j
152    o in pkgs: dic, obcs, offline, rbcs:
153      standard way to compute coeff. for time interpolation between 2 time reccords
154      which retains full precision (& make results less dependent on compiler).
155      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
156    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
157      packages instead of reading ice cover and wind speed separately
158    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
159     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
160      to allow to compile customized code before the update)
161    o cleaning-up:
162      - fix CPP instruction syntax in pkg/obcs
163      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
164        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
165      - fix some threads issue in IO parts.
166    o pkg/dic:
167      - add tons of "_d 0" (--> much better testreports !)
168       and then update outputs of tutorial_global_oce_biogeo
169    o pkg/mom_fluxform:
170      add a special version of momentum advection intended to conserve momentum
171      next to a bathymetry step or a coastline edge. (default = off = #undef)
172    o new read/write pickup version:
173      - for now, only implemented for main (mdsio) pickup file.
174      - write out only what is needed to restart; merge pickup_nh , pickup_ph
175        and main pickup together.
176      - read meta file; read only what is needed to restart; stop if a field
177        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
178        if it make sense (even if the restart is not perfect).
179      - if no meta file, assume that pickup to read corresponds exactly to
180        a pickup that would currently be written.
181      - read pickup written in the old format (until checkpoint59i) if it
182        recognizes an old meta file (no field-list).
183      - add a meta file in exp. which starts from a pickup: 2 cases:
184        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
185         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
186        b) a meta file describing the content of the associated pickup file
187         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
188    o pkg/mdsio & pkg/rw:
189      - new routine to read a meta file ; new set of routine to read
190        Multiple-fields file (with meta file).
191    o added open boundary conditions capability for seaice
192        HSNOW, HSALT, UICE, and VICE
193    
194    checkpoint59i
195    o adjoint:
196      * fix multiDimAdvection adjoint
197        (partial recomputation problem by TAF for fVerT(:,:,kDown)
198        and comlev1 size definition (maxpass vs. max. number of tracers)
199      * verification/global_ocean.90x45x15 adjoint now tests
200        NLFS and multiDimAdvection using DST3 (=30)
201      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
202    o pkg/kpp: add "_d 0" to real constant (if missing);
203      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
204      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
205    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
206      for internal parameters related to restart process (formerly from PARAMS.h)
207      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
208    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
209      as argument. (only atm2d & obcs write_pickup have not yet been updated)
210    o pkg/monitor:
211      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
212      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
213      - account for deep Atmosphere factor and density factor (anelastic)
214    o added open boundary conditions capability for seaice HEFF and AREA
215    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
216      thermodynamics
217      - requires a little reorganization, which affects the testreport results
218        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
219        so that now the conservative form is tested
220      - add a few comments
221    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
222    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
223    o add new diagnostics to seaice: advective, diffusive fluxes (only for
224      multidim-advection, for scheme 2 they are not filled) and transports,
225      thermodynamic growth rates
226    o change units of EmPmR (inside the code, + within coupling interface)
227      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
228      Affects results @ truncation level (cg2d match) and update output of
229       experiments: lab_sea(6), global_ocean.90x40x15(10),
230      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
231      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
232      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
233      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
234    
235    checkpoint59h
236    o pkg/exf:
237      - improve vectorization by moving if-statement out of loops in
238        exf_mapfields, exf_radiation
239      - exf_bulkformulae.F: introduce 2D fields and vectorize code
240    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
241    o testreport:
242      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
243        monitor & update offline_exf_seaice exp. output.
244      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
245    o pkg/seaice:
246      - bug fix in the evp solver: boundary conditions were affected be
247        masking of zMax/zMin (changes results)
248      - minor bug fix in boundary conditions in seaice_calc_strainrates
249        (changes results for no_slip)
250      - seaice_lsr.F: make interpolation of eta dependent on boundaries
251      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
252      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
253        stress formulation and no-slip boundary conditions
254    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
255      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
256    o pkg/seaice: a first HSALT time stepping equation has been checked in
257    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
258      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
259      without requiring DO-IF statements
260    o pkg/thsice:
261      use continuous power-law function for partition of energy between lateral
262      melting/freezing and thinning/thickening ; old code using step function
263      still available with #undef THSICE_FRACEN_POWERLAW
264      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
265    o testreport: change AD testing : check against results/output_adm.txt
266      using same scripts as for forward test.
267    
268    checkpoint59g
269    o adjoint testing: in preparation for changing testreport:
270      - output format: cost and grad written on separated lines
271      - ad output results in directory "results" (instead of "results_ad")
272    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
273    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
274    o pkg/ecco: allow user defined cost function contributions
275    o testreport:
276      Allow to choose (per experiment) the list of tested output variables
277       and the main variable (used to issue a pass/FAIL ) ;
278      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
279      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
280      Also modify printing of summary:
281       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
282       b) echo the list of tested variables in the individual summary.txt of
283          each experiment.
284    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
285      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
286      (but still depend on the tile decompostion of the domain).
287    o pkg/seaice: change a discretization detail to make the B-grid code
288      "more symmetric". This change is likely to remove all "ridges/leads" that
289      where quasi-aligned with the grid in B-grid solutions. It may also be
290      the solution to the stress coupling issues with the B-grid.
291    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
292      remove .cvsignore from input dir. (since testreport no longer run here).
293    o pkg/thsice:
294     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
295     - fix reshaping of sea-ice just after advection:
296       melt all the ice only if ice-volume is too small.
297     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
298       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
299     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
300    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
301      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
302    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
303      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
304      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
305      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
306      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
307      -> update output.txt
308    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
309     this affects truncation error: -> update output.txt of exp:
310      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
311      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
312    
313    checkpoint59f
314    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
315    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
316      a bounded range (in forward mode)
317    o pkg/ecco, ctrl, autodiff and mom_common:
318     internal parameter controls, completements of implementations
319    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
320    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
321      (not seem any difference in testing results).
322    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
323       at face corners.
324    o pkg/generic_advdiff:
325     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
326      loop range indices for computing vertical advection tendency
327      and do the calculation in the interior only (no overlap) ;
328      for now, only implemented for SOM advection (to save CPU time).
329     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
330    o exch2 adjoint
331      First set of changes:
332      - add exch2 hand-written adjoint templates
333      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
334        This will require cleanup in pkg/autodiff/*.F
335        (changed routines currently kept separate in verif. code/)
336      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
337        that used to hide exch2 or cubed-sphere specific code
338        (commented via 'cph-exch2')
339    o pkg/seaice
340      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
341    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
342       output of global_ocean.cs32x15.thsice .
343    
344    checkpoint59e
345    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
346      for B-grid vector (not yet tested) and C-grid vector (<- only used
347      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
348    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
349      (#ifdef ALLOW_SALT_PLUME)
350    o gather_2d/scatter_2d: removed halo regions
351    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
352      scheme and the corresponding test case (under front_relax dir). For now,
353      only available with Skew-flux form and not yet tested in realistic set-up.
354      adjoint: store directives updated, but gradient checks deteriorated,
355      so maybe GM/Redi adjoint is now broken.
356    o seaice adjoint
357      * add AREA, HEFF, HSNOW as control variable
358        (should not change lab_sea results)
359      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
360    o pkg/seaice:
361      * added computation of saltFlux in seaice_growth;
362        For time being, sea ice salinity is assumed constant
363        contribution of snow flooding to freshening of sea ice is neglected.
364        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
365        defaults to 0.0 in order to maintain backward compatibility.
366        Typical values for SEAICE_salinity are 4 to 10 g/kg.
367      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
368      * added SEAICE_availHeatFrac, which specifies fraction of surface level
369        heat content used to melt or grow ice
370      * commented out cap of HICE: it helps keep ice thinner
371      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
372      * applied OBCS T/S mask to HEFFM sea ice mask
373    
374    checkpoint59d
375    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
376     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
377     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
378    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
379     and change default value of parameter "GM_Small_Number";
380     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
381       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
382       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
383    o pkg/ecco: cost function when applying pkg/smooth to controls
384    o pkg/ctrl: add forcingPrecond run time parameter
385    o pkg/seaice:
386     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
387     - fix bug in metric terms of u-equation in LSR solver (implicit part),
388       changes verification/lab_sea
389     - rearrange implicit part of u-equation in LSR solver to make it easier to
390       read, understand, and debug. This causes changes at the truncation level.
391     - fix (serious) bug in the boundary conditions (sign error in the implicit
392       part) of the LSR solver. Changes all LSR results.
393     - fixed problem with HSNOW initialization to avoid thick snow when AREA
394       is initilized with small values - does not change lab_sea results.
395     - added HsnowFile initialization capability
396    o pkg/smooth: addition to model/src and pkg/ctrl so allow
397     initialization of pkg/smooth and application to control vector
398    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
399    o dependencies: pkg/profiles requires pkg/cal
400    o pkg/profiles:
401     - added option ALLOW_PROFILES_GENERICGRID
402         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
403         that interpolation information (grid points and coefficients) is provided
404         within the netcdf input files.
405         -> sample matlab scripts can be found in MITgcm_contrib/gael
406         that allow you to prepare netcdf input files.
407     - also modified: cleaner include statements, cleaner error print statements,
408       cleaner stops when error, and more tests of the netcdf input files consistency.
409    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
410    o pkg/seaice:
411     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
412       requires a new routine: seaice_diagnostics_fill.F
413     - make sure that seaice does not move if not forced (pressure replacement
414       method, Hibler and Ip, 1995), changes results
415     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
416     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
417       It is turned off by default (=-1.), because it changes the results.
418     - make it possible to read AREA from a file, too.
419    
420    checkpoint59c
421    o add S/R and diagnostics for oceanic mixed-layer depth
422    o move GMRedi call after all vertical mixing schemes (including KPP)
423    o pkg/thsice:
424     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
425      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
426    o pkg/obcs:
427     - bug fix for balance code
428    o pkg/seaice:
429      - allow values of SEAICE_elasticParm > 1
430      - add new parameter SEAICE_evpTauRelax as an alternative
431        to SEAICE_elasticParm
432      - make lsr boundary conditions free slip (by default), changes result
433      - add code for no slip boundary conditions for lsr
434      - set minimum of zeta to zero (and not 4e8) (changes results)
435      - add a cap on AREA after advecting AREA if seaice_growth is not called
436    o change calculation of Visbeck K:
437      - no longer depend on tapering scheme; instead, compute slope (limited
438        by GM_maxSlope). this is equivalent to what was comuted before with
439        clipping or linear tappering.
440      - fix vertical averaging (wrong by 1/2 level)
441      - leave the old version (but will not be maintained) within
442        #ifdef OLD_VISBECK_CALC / #endif
443      - update output of exp. ideal_2D_oce
444    o change error catch in calc_r_star to improve vectorization
445    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
446      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
447    o adjoint:
448      Re-organized adjoint checkpointing according to Matt Mazloff
449      (but with modifs/completions/cleanups)
450      Storing is now bundled into large arrays to optimized I/O
451      (and second step in cleanup of the_main_loop)
452    
453    checkpoint59b
454    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
455      - export/import (between ocean & coupler) fields needed for ocean DIC.
456    o pkg/seaice:
457      - get rid of three more exchanges seaice_calc_viscosities (required
458        different loop boundaries in seaice_lsr and seaice_ocean_stress)
459      - bug fix in seaice_ocean_stress (update of lab_sea required)
460      - reduce loop boundaries to necessary minimum also in seaice_evp
461      - go back to the old way of computing deltaC/Z as the adjoint likes that
462        better
463    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
464      passive tracer to an Age Tracer) + update output.txt
465    o pkg/exf:
466      - implement A-grid / C-grid selection for wind-stress input files.
467      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
468      for now, in exf_bulk_largeyeager04.F only :
469      - change implementation for case where windspeed + 2. components wind-stress
470        are read-in. AND use rhoConstFresh to convert evap.
471    o pkg/seaice:
472      - use correct EXCH_UV for wind-forcing (on A-grid).
473      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
474        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
475    o pkg/exf:
476      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
477      EXF_INTERPOLATION:
478      - merge global_with_exf/code version of exf_interp_read.F
479        to the main code ;
480      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
481        reading the file ; Important: This options needs to be defined to recover
482        previous code.
483        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
484      - no longer loose real*8 precision along the way when using exf_iprec=64.
485    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
486      - change discretisation of evp-solver in order to avoid another exchange
487        (changes lab_sea) and clean up a little
488      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
489        help the adjoint (this also changes the results slightly)
490      - add a few "_d 0" where they had been missing in seaice_evp.F
491      - cleaning up: remove unused seaice_calc_rhs.F
492    o pkg/exf: some cleaning-up:
493      - change various "constants" into runtime parameters
494      - cleaned-up Large&Yeager04 routine which should eventually
495        replace exf_bulkformulae.F (changed names of S/R and CPP)
496        and merged various ALLOW_ATM_WIND options
497     only used with thsice pkg (in thsice_get_exf.F):
498      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
499        which are used when useStabilityFct_overIce=TRUE (= the default)
500      - change default values of ice & snow emissivity and scale downward LW
501        by ice & snow emissivity.
502    o pkg/thsice:
503     fix few little problems, in thsice_calc_thickn.F:
504      - growth vertically (and not laterally) if iceFrac == iceMaskMax
505      - melt only laterally if hIce < hThinIce (as the comments say)
506      and in thsice_extend.F:
507      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
508      - start to form ice as soon as the minimum ice-volume is reachable.
509     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
510      and cpl_aim+ocn
511    o pkg/kpp
512     - move computation of surface related input fields to KPP into a new
513       subroutine kpp_forcing_surf.F
514     - remove wrong (within bi,bj loops) EXCH calls.
515     - little cleaning (add argument myThid in last position, cvs header ...)
516     - for now, fix conservation problem by exchanging KPPviscAz (may not
517       be the best fix)
518    o pkg/seaice
519     - check for inconsistent evp parameter/cpp-flag combination
520     - remove leftover errIO flat for obsolete name list error handling
521    o OpenAD
522     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
523    
524    checkpoint59a
525    o pkg/seaice: some parameter clarifications and a little bit of clean up
526    o pkg/thsice: rename run-time parameters:
527       himin       -> hIceMin
528       himin0      -> hThinIce
529       hihig       -> hThickIce
530       i0          -> i0swFrac
531       transCoef   -> bMeltCoef
532       frac_energy -> fracMelting
533      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
534       with default values (for now) that do not change the results.
535      remove old version of thsice vars advection in pkg/seaice.
536    o in FFIELDS.h:
537      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
538      - make pLoad & sIceLoad always available (but still only used if
539         ATMOSPHERIC_LOADING is #define).
540    o pkg/kpp: replaced _KPP_RL with _RL
541    o bug fixes for vertical diffusivity computations when both KPP and
542        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
543        are no longer updating the vertical diffusivity array
544        (passed as argument) but are (re-) setting those arrays.
545    o pkg/seaice: fix bug in evp solver, while doing that
546      - change (improve?) discretization of stress computations for both
547        cgrid-lsr and evp solver
548      - add a new routine to compute strain rates
549      - the above changes lab_sea results
550      - add no slip conditions for evp solver (off by default), lsr-version
551        may follow
552      - fix exchange for shear at Z-points (does not change lab_sea)
553      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
554        (to force the user to pick a time step since there is not "safe" way
555        of choosing it)
556      - add principal stress diagnostics
557      - rearrange fields for evp a little to avoid having to call a: too many
558        exchanges and b: exchanges for stress trensor components which we do
559        not have.
560      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
561        of evp, complete rewrite for lsr case (latter is does not yet work
562        in all cases)
563    o pkg/kpp: add code to have mixing in shelf ice caverns
564      - add myThid to all kpp routines (long overdue)
565    
566    checkpoint59
567    o pkg/exf:
568      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
569        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
570      - move exf header files from lower_case.h to UPPER_CASE.h ;
571        add missing cvs Header & Name
572      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
573      - add namelist param. selectStressGridPosition, exf_monFreq
574      - retire many _CLIM routines, and remove data.exf_clim
575        + params moved to data.exf
576        + climsst, climsss now handled by exf_set_gen, i.e.
577          climss?period=0 refers to constant field,
578          climss?period=-12 to monthly forcing
579      - split up namelists in data.exf
580    o pkg/seaice:
581      - remove seaice_exch and seaice_exch_uv
582      - remove superfluous exchange of theta
583      - add myThid to seaice_budget_ocean/ice
584      - add new interface for atmospheric wind forcing (C-grid only)
585        + new routine
586        + two new field (taux, tauy for stress over ice)
587        + removed one global field (DAIRN) for C-grid case only
588    o pkg/thsise
589      - 2nd set of modifs for thsice adjoint in conjunction with exf
590    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
591    
592    checkpoint58y_post
593    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
594      vertical diffusivity, similar to that in MOM4; turned on using
595      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
596      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
597    o Added capability for 3D specification of background vertical diffusion
598      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
599      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
600      "data" file that contains the 3D vertical diffusivity coefficients.
601    o ice dynamics (pkg/seaice) with thsice thermodynamics:
602      - add code within pkg thsice to advect & diffuse sea-ice fields
603      similar to (and will replace) what has been added in  seaice_advdiff.F,
604      but: - conserving Mass, Heat & Salt.
605           - better when using non-linear advection scheme (not yet fully tested)
606           - can also be used in atmospheric set-up (for now, only the diffusion).
607    
608    checkpoint58x_post
609    o IO option for global-file compact format:
610      - add options when generating topology (utils/exch2/matlab-topology-generator)
611      - add I/O capability (pkg/mdsio).
612      - adapt utils/matlab/rdmds.m to read this format.
613      for now long-line format not yet supported by pkg/mdsio (& exch2).
614    o shelfice: add a few diagnostics
615    
616    checkpoint58w_post
617    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
618      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
619      (and replace horiVertRatio in NH code).
620      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
621                         and tutorial_plume_on_slope (sensitive to truncation)
622    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
623      directly to drive seaice model (C-grid only)
624    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
625     - reintroduce computation of wind from stress,
626     - compute tau (in exf_bulkformulae.F) from windstress averaged to
627       mass points to avoid tau = 0
628     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
629    o rdmnc.m: make it work with "global" files created with gluemnc
630    o rdmnc.m : some improvements in dealing with singleton dimension
631      (tested on all testreport mnc output files).
632    o genmake2: disable pkg/profiles if netcdf test fails.
633    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
634    o move call to cal_readparms up to make calendar parameters/variable available
635      to all packages
636    
637    checkpoint58v_post
638    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
639      useDynP_inEos_Zc tested.
640    o pkg/exf: changes to properly interpolate/mask/scale initial fields
641    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
642      and portions thereof.  See read_cs.txt for description and examples.
643    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
644      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
645      following the great-circle arc between those 2 points.
646    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
647      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
648    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
649     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
650     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
651     - still needs work (not working with some options ; efficiency to improve)
652       and serious testing.
653     - use this scheme for temperature & salinity in 2 advection test exp.:
654       advect_xy & advect_xz, respectively.
655    
656    checkpoint58u_post
657    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
658    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
659    o testreport: add option "-skipdir" to skip some test.
660    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
661      momentum calculation.
662    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
663    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
664      remove checkpoint.F and the_correction_step.F (no longer used);
665      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
666    o add option (linFSConserveTr) to correct for tracer source/sink due to
667      Linear Free surface
668    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
669    o pkg/thsice: fix reading mnc-pickups
670    
671    checkpoint58t_post
672    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
673    o pkg/mdsio:
674     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
675       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
676       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
677     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
678     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
679       either MDS_READ_FIELD or MDS_WRITE_FIELD )
680     - new S/R (to replace MDSWRITEMETA), which allows to write more
681       informations (variable names, time ...) to meta files.
682     - modify rdmds.m to give back the meta file content.
683    o pkg/diagnostics: change vertical interpolation to be safer, and more
684       flexible (define p-levels to interpolate to in data.diagnostics);
685      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
686       diagnostic pointer.
687    o pkg/seaice: more cleaning up of seaice_growth, added many comments
688    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
689    o fix multi-category seaice:
690     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
691       SEAICE_MULTICATEGORY
692     - fix short wave heat flux
693    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
694       and allow to use EVP solver. Change forward lab_sea: test both EVP
695       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
696    o Initial check-in of lab_sea adjoint
697      (very similar to natl_box_adjoint/code_seaice)
698      * used C-grid and EVP solver
699      * used KPP, GM/Redi
700      * uses inAdExact=.TRUE.
701      * gradient checks fail for both ADM and TLM
702        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
703        f.d. gradients actually seem more problematic than ADM, TLM gradients;
704        issue is related to forward mismatch between g77 an ifort
705    o pkg/seaice: overhaul of thermodynamics
706     - growth.F and groatb.F are replaced by new routine seaice_growth.F
707     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
708     - move a few global fields out of SEAICE.h into seaice_growth.F and
709       make them 2D (FICE/QNETO/ ...)
710     - remove FO (it is the same as QNETO)
711     - introduce a few local fields to avoid modifying external fields such
712       as atemp, etc.
713    
714    checkpoint58s_post
715    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
716      changed exf_set_gen.F so that
717        genperiod=0 means input file is one time-constant field and
718        genperiod=-12 means input file contains 12 monthly means
719    o CG2D: use pre-computed solver main-diagonal (stored in common block);
720      this affects truncation error ; generate new output file for exp. which
721      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
722        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
723        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
724        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
725        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
726        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
727    o start implementation of deep-atmosphere and anelastic formulation
728    o verification: remove 2nd copy of input files and use script "prepare_run"
729      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
730    o mom_common/vecinv/fluxform: fix a few initialisation isssues
731    o profiles: fix for multithreaded case
732    
733    o diagnostics: rename few diags:
734      s/'PRESSURE'/'RCENTER '/g
735      s/'TICE    '/'oceFreez'/g
736      s/'TAUX    '/'oceTAUX '/g
737      s/'TAUY    '/'oceTAUY '/g
738      s/'SWFLUX  '/'oceQsw  '/g
739      s/DIFx/DFxE/g
740      s/DIFy/DFyE/g
741      and add few ocean-forcing diagnostics:
742      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
743    o modifications to pkg/seaice/growth.F and budget.F, which change results of
744      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
745      as actual snow thickness.  It now refers everywhere to effective snow
746      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
747    
748    checkpoint58r_post
749    o modifications to pkg/seaice/growth.F, which change results of
750      lab_sea experiment: fixes pertain to melting snow over open water, to
751      masking EVAP under sea ice, and to using the correct AREA variable for
752      computations of EVAP, PRECIP, HSNOW, and GHEFF
753    o add ability to read bathy, salt, and theta using MNC (off by def)
754    o add flooding algorithm and advection of HSNOW for pkg/seaice;
755      both are turned off by default and do no change any results
756    o seaice advection with pkg/thsice: a step toward the use of non-linear
757      advection scheme, but #ifdef or commented out for now (requires more EXCH).
758    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
759      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
760      in natl_box (affects results @ truncation level: update output.txt)
761    o multi-threading and IO:
762      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
763      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
764        (needed to work with SingleCpuIO): tested in all verif. exp.
765    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
766      affects the results (but none of the verification test uses this scheme).
767    o Adding some pkg/diagnostics capability to pkg/seaice
768      (will certainly be subject to changes)
769    o ctrl: adding new control variables:
770      lwflux, lwdown, evap, snowprecip, apressure, runoff
771    
772    checkpoint58q_post
773    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
774      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
775      high_res_cube configuration by 4% on Columbia.
776  o clean-up multi-threaded problems (reported by debugger tcheck on ACES);  o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
777    add (in global_with_exf/code) a version of EXF_INTERP_READ without    add (in global_with_exf/code) a version of EXF_INTERP_READ without
778    dynamical allocation (seems to work in multi-threaded).    dynamical allocation (seems to work in multi-threaded).

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