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revision 1.742 by mlosch, Wed Nov 1 09:50:43 2006 UTC revision 1.969 by jmc, Tue Apr 1 02:06:54 2008 UTC
# Line 3  $Name$ Line 3  $Name$
3    
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    o pkg/mom_vecinv: - new parameter "selectVortScheme" to select which
8       scheme to use for vorticty-term ;
9     - compute upwindVorticity=T case within mom_vi_u/v_coriolis_c4.F
10       (with default selectVortScheme, return to original discretisation)
11     - remove weird combination (e.g.: upwindVorticity & highOrderVorticity)
12    o pkg/seaice: add a line to the summary to indicate grid type (B/C)
13    o in mom_calc_visc, fix average value of viscAh_W & viscA4_W next to the
14      bottom ; only used with variable horizontal viscosity and non-hydrostatic.
15      also fix diagnostics VISCAHW & VISCA4W.
16    
17    checkpoint59o
18    o dome/code/obcs_calc.F: avoid division by zero (detected using gfortran).
19    o change the loop ordering in most gad_*_adv_x.F to improve vectorization:
20      move a few statemens out the main loop into separate loops
21    o pkg/shelfice:
22      - sort out freshwater flux; convert freshwater fluxes to mass fluxes
23        (kg/m^2/s), does not break tests, because in verification/isomip,
24        rhoConstFresh=rhoConst (by accident)
25      - rearrange computation of tLoc, sLoc, pLoc to make code more efficient
26      - move S/R find_rho_scalar, pkg/ecco/sw_ptmp.F, pkg/ecco/sw_adtg.F into
27        new file model/src/seawater.F, so that they are available for all pkgs.
28      - convert potential temperature into in-situ temperature. This changes the
29        isomip tests => update tests
30    o add a flag writePickupAtEnd (default=true) to be able to suppress
31      writing a pickup at the last timestep
32    o tools/mpack-1.6 :
33      - disable automake (not working) and autoconf (not needed).
34      - update to version 1.6.4 which fix MD5 code on some 64 bits platforms
35        also cleaner with much less compilation warnings.
36    o pkg/profiles:
37      rename profiles_interp_mean_genericgrid as profiles_interp_mean_gg
38      (for "less than 32 characters name" compiler requirement)
39    o pkg/obcs and pkg/exf: added capability to specify seaice open boundary
40      conditions that have a different sampling frequency than S/T/U/V obcs
41    o pkg/diagnostics (stats-diags):
42      - fix global Min/Max in case 1 processor get only empty tiles
43    o genmake2: replace (4 times)
44         make genmake_tc_1.o >> genmake_warnings 2>&1
45      with
46         COMM="$CC $CFLAGS -c genmake_tc_1.c"
47         echo $COMM >> genmake_warnings
48         $COMM >> genmake_warnings 2>&1
49      to make genmake2 always see the value of CC as specified in the optfile.
50    o generic_advdiff: - prather advection scheme (SOM) coded for CS-grid.
51      - add diagnostics for 1srt & 2nd Order moments and sub-grid variance.
52      - modify verification advect_cs test to test SOM-advection on CS-grid.
53    o pkg/ctrl:
54      - Rewrite of ctrl_map_ini_ecco.F,
55        introducing a generic routine (ctrl_map_ini_gen.F).
56      - Modification of ctrl_bound/adctrl_bound handling control vector bounds.
57    
58    checkpoint59n
59    o pkg/diagnostics: for large number of diagnostics, store diagnostic mate
60      number in dedicate array "hdiag":
61      - new version of S/R DIAGNOSTICS_ADD2LIST : DIAGNOSTICS_ADDTOLIST
62        with 1 more argument (mate number); modify old version DIAGNOSTICS_ADD2LIST.
63      - many small changes (integer format) for large number of diagnostics
64      - start to use DIAGNOSTICS_ADDTOLIST (necessary for diagnostics with
65        a counter mate) in pkg diagnostics, ptracers, thsice & aim_v23.
66    o add parameter rotateGrid and Euler angles EulerPhi/Theta/Psi. For
67      usingSphericalGrid, this allows to define the rotated grid coordinates
68      via phiMin/thetaMin/dxSpacing/dySpacing, etc., but then re-compute the
69      geographical coordinates according to the inverse of the rotation defined
70      by the Euler angles, so that Coriolis parameter and online-interpolation by
71      exf works with the geographical coordinates on XC/YC/XG/YG.
72      Naturally, this feature does not work with all packages, so some
73      combinations are prohibited in config_summary (flt, flt_zonal, ecco,
74      profiles), because there the coordinates are assumed to be regular
75      spherical grid coordinates.
76    o pkg/gmredi,ctrl,ecco,autodiff,grdchk and model/src,inc:
77      - introduce isopycnal diffusion coefficient control.
78    o tools/adjoint_options:
79      - additional control vector components.
80    o pkg/mnc: have mnc create marginally meaning full coordinate variables
81      (that is the grid indices) if usingCurvilinearGrid and NOT EXCH2
82    o pkg/mypackage:
83      - add example of read/write pickup for state-var ;
84      - add entry points to the main code for state-vars diags & write-pickup.
85    o pkg/exf: rewrite of exf_getffieldrec.F to properly deal with year
86      transitions for useExfYearlyFields
87      - add new subroutine that determines the file to read from for
88        use*YearlyFields = .TRUE. and .FALSE.
89      - add a verification experiment to global_with_exf that tests
90        useExfYearlyFields with USE_EXF_INTERPOLATION defined
91    o pkg/obcs/exf: add useOBCSYearlyFields (=.FALSE.) to obcs with exf in
92      analogy to useExfYearlyFields; rearrange obcs_prescribe_read: two new
93      subroutines (which could be generated from a template, because they are
94      almost identical), for now they are included in obcs_prescribe_read.F for
95      simplicity
96    o pkg/exf:
97      - add a little more diagnostic to exf_interp_read (in analogy to
98        mds_read_field, can be turned off with debugLevel < debugLevA=1)
99      - improve vectorizability of exf_interp for TARGET_NEC_SX, makes code
100        ugly but fast by unrolling short inner loops, inserting a unroll=8
101        directive in routine lagran, and splitting a loop and making do while the
102        outermost loop (the latter requires the intoduction of index arrays)
103    o pkg/obcs: replace obcs_apply_area/heff/hsalt/hsnow with obcs_apply_seaice
104    o pkg/seaice: moved DIFFERENT_MULTIPLE from seaice_model to seaice_dynsolver
105      http://forge.csail.mit.edu/pipermail/mitgcm-devel/2008-January/003173.html
106    o verification/seaice_obcs: updated for restart test and latest options
107    o pkg/seaice: add a new flag SEAICEuseTEM to use a slightly different
108      ice rheology (so-called truncated ellipse, that gets rid of tensile stress);
109      for now this is only available for the C-grid code and also within
110      #ifdef SEAICE_ALLOW_TEM, because this option may slow down the EVP code
111    
112    checkpoint59m
113    o pkg/seaice: use different time constant for melting (SEAICE_gamma_t)
114      and freezing (SEAICE_gamma_t_frz) ice due to mixed layer temperature
115    o gad_som : fix flux output (& diagnostics) to have same units as other  
116      advection scheme fluxes (was previously multiplied by deltaT).  
117    o added verification/seaice_obcs both to test seaice open boundaries
118      and to provide an example matlab scrpt for generating them
119    o added verification/lab_sea/input.salt_plume for testing pkg/salt_plume
120    o pkg/salt_plume: clean up salt_plume_frac.F to
121      remove redundancy in PlumeMethod 1 and 4
122    o pkg/kpp: added saltplume diagnostics
123    o pkg/obcs and pkg/seaice:
124      - do not set uice and vice to zero when OB*icefile are unspecified
125      - OBCS_SEAICE_AVOID_CONVERGENCE is undefined by default
126      - moved seaice tracer obcs after call to seaice_growth
127    o pkg/salt_plume: added various options for salt plume depth
128      criterion and for vertical distribution of the salt
129    
130    checkpoint59l
131    o pkg/ptracers: new version of ptracers pickup:
132      read meta file and write only fields which are needed to restart.
133      ( same logic as main pickup file ; also using pickupStrictlyMatch )
134    o pkg/seaice:
135      - add timescale for melting due to warm mixed layer as a means of
136        setting SEAICE_availHeatFrac more conveniently
137      - add a CPP-flag/runtime parameter check for flooding algorithm
138      - reformulated availHeat in seaice_growth.F to be independent of AREA
139    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
140      unit changes
141    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
142    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
143      SX vector computer.
144    o pkg/seaice:
145      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
146        seaice forcing fields can now be read only through pkg/exf
147      - removed some unused halos
148    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
149    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
150      or U/VICE from U/VWIND before computing U/VSTRESS
151    
152    checkpoint59k
153    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
154      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
155    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
156      all experiments pass when compile with un-initialised var. checking option.
157    o added pkg/salt_plume
158    o script to test restart (for now, in MITgcm_contrib/jmc_script)
159    o pkg/seaice: new read/write pickup version.
160      read meta file and write only fields which are needed to restart.
161      ( same logic as main pickup file ; also using pickupStrictlyMatch )
162    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
163    o lab_sea.hb87: modify the domain & update output.hb87.txt :
164      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
165      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
166      process. Fixed here by closing the domain at the Northern boundary.
167    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
168    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
169      a set of consecutive levels in/from a 3-D array.
170    o pkg/ptracers:
171      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
172      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
173    
174    checkpoint59j
175    o in pkgs: dic, obcs, offline, rbcs:
176      standard way to compute coeff. for time interpolation between 2 time reccords
177      which retains full precision (& make results less dependent on compiler).
178      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
179    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
180      packages instead of reading ice cover and wind speed separately
181    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
182     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
183      to allow to compile customized code before the update)
184    o cleaning-up:
185      - fix CPP instruction syntax in pkg/obcs
186      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
187        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
188      - fix some threads issue in IO parts.
189    o pkg/dic:
190      - add tons of "_d 0" (--> much better testreports !)
191       and then update outputs of tutorial_global_oce_biogeo
192    o pkg/mom_fluxform:
193      add a special version of momentum advection intended to conserve momentum
194      next to a bathymetry step or a coastline edge. (default = off = #undef)
195    o new read/write pickup version:
196      - for now, only implemented for main (mdsio) pickup file.
197      - write out only what is needed to restart; merge pickup_nh , pickup_ph
198        and main pickup together.
199      - read meta file; read only what is needed to restart; stop if a field
200        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
201        if it make sense (even if the restart is not perfect).
202      - if no meta file, assume that pickup to read corresponds exactly to
203        a pickup that would currently be written.
204      - read pickup written in the old format (until checkpoint59i) if it
205        recognizes an old meta file (no field-list).
206      - add a meta file in exp. which starts from a pickup: 2 cases:
207        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
208         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
209        b) a meta file describing the content of the associated pickup file
210         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
211    o pkg/mdsio & pkg/rw:
212      - new routine to read a meta file ; new set of routine to read
213        Multiple-fields file (with meta file).
214    o added open boundary conditions capability for seaice
215        HSNOW, HSALT, UICE, and VICE
216    
217    checkpoint59i
218    o adjoint:
219      * fix multiDimAdvection adjoint
220        (partial recomputation problem by TAF for fVerT(:,:,kDown)
221        and comlev1 size definition (maxpass vs. max. number of tracers)
222      * verification/global_ocean.90x45x15 adjoint now tests
223        NLFS and multiDimAdvection using DST3 (=30)
224      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
225    o pkg/kpp: add "_d 0" to real constant (if missing);
226      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
227      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
228    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
229      for internal parameters related to restart process (formerly from PARAMS.h)
230      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
231    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
232      as argument. (only atm2d & obcs write_pickup have not yet been updated)
233    o pkg/monitor:
234      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
235      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
236      - account for deep Atmosphere factor and density factor (anelastic)
237    o added open boundary conditions capability for seaice HEFF and AREA
238    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
239      thermodynamics
240      - requires a little reorganization, which affects the testreport results
241        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
242        so that now the conservative form is tested
243      - add a few comments
244    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
245    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
246    o add new diagnostics to seaice: advective, diffusive fluxes (only for
247      multidim-advection, for scheme 2 they are not filled) and transports,
248      thermodynamic growth rates
249    o change units of EmPmR (inside the code, + within coupling interface)
250      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
251      Affects results @ truncation level (cg2d match) and update output of
252       experiments: lab_sea(6), global_ocean.90x40x15(10),
253      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
254      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
255      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
256      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
257    
258    checkpoint59h
259    o pkg/exf:
260      - improve vectorization by moving if-statement out of loops in
261        exf_mapfields, exf_radiation
262      - exf_bulkformulae.F: introduce 2D fields and vectorize code
263    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
264    o testreport:
265      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
266        monitor & update offline_exf_seaice exp. output.
267      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
268    o pkg/seaice:
269      - bug fix in the evp solver: boundary conditions were affected be
270        masking of zMax/zMin (changes results)
271      - minor bug fix in boundary conditions in seaice_calc_strainrates
272        (changes results for no_slip)
273      - seaice_lsr.F: make interpolation of eta dependent on boundaries
274      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
275      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
276        stress formulation and no-slip boundary conditions
277    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
278      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
279    o pkg/seaice: a first HSALT time stepping equation has been checked in
280    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
281      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
282      without requiring DO-IF statements
283    o pkg/thsice:
284      use continuous power-law function for partition of energy between lateral
285      melting/freezing and thinning/thickening ; old code using step function
286      still available with #undef THSICE_FRACEN_POWERLAW
287      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
288    o testreport: change AD testing : check against results/output_adm.txt
289      using same scripts as for forward test.
290    
291    checkpoint59g
292    o adjoint testing: in preparation for changing testreport:
293      - output format: cost and grad written on separated lines
294      - ad output results in directory "results" (instead of "results_ad")
295    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
296    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
297    o pkg/ecco: allow user defined cost function contributions
298    o testreport:
299      Allow to choose (per experiment) the list of tested output variables
300       and the main variable (used to issue a pass/FAIL ) ;
301      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
302      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
303      Also modify printing of summary:
304       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
305       b) echo the list of tested variables in the individual summary.txt of
306          each experiment.
307    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
308      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
309      (but still depend on the tile decompostion of the domain).
310    o pkg/seaice: change a discretization detail to make the B-grid code
311      "more symmetric". This change is likely to remove all "ridges/leads" that
312      where quasi-aligned with the grid in B-grid solutions. It may also be
313      the solution to the stress coupling issues with the B-grid.
314    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
315      remove .cvsignore from input dir. (since testreport no longer run here).
316    o pkg/thsice:
317     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
318     - fix reshaping of sea-ice just after advection:
319       melt all the ice only if ice-volume is too small.
320     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
321       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
322     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
323    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
324      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
325    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
326      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
327      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
328      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
329      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
330      -> update output.txt
331    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
332     this affects truncation error: -> update output.txt of exp:
333      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
334      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
335    
336    checkpoint59f
337    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
338    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
339      a bounded range (in forward mode)
340    o pkg/ecco, ctrl, autodiff and mom_common:
341     internal parameter controls, completements of implementations
342    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
343    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
344      (not seem any difference in testing results).
345    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
346       at face corners.
347    o pkg/generic_advdiff:
348     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
349      loop range indices for computing vertical advection tendency
350      and do the calculation in the interior only (no overlap) ;
351      for now, only implemented for SOM advection (to save CPU time).
352     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
353    o exch2 adjoint
354      First set of changes:
355      - add exch2 hand-written adjoint templates
356      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
357        This will require cleanup in pkg/autodiff/*.F
358        (changed routines currently kept separate in verif. code/)
359      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
360        that used to hide exch2 or cubed-sphere specific code
361        (commented via 'cph-exch2')
362    o pkg/seaice
363      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
364    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
365       output of global_ocean.cs32x15.thsice .
366    
367    checkpoint59e
368    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
369      for B-grid vector (not yet tested) and C-grid vector (<- only used
370      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
371    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
372      (#ifdef ALLOW_SALT_PLUME)
373    o gather_2d/scatter_2d: removed halo regions
374    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
375      scheme and the corresponding test case (under front_relax dir). For now,
376      only available with Skew-flux form and not yet tested in realistic set-up.
377      adjoint: store directives updated, but gradient checks deteriorated,
378      so maybe GM/Redi adjoint is now broken.
379    o seaice adjoint
380      * add AREA, HEFF, HSNOW as control variable
381        (should not change lab_sea results)
382      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
383    o pkg/seaice:
384      * added computation of saltFlux in seaice_growth;
385        For time being, sea ice salinity is assumed constant
386        contribution of snow flooding to freshening of sea ice is neglected.
387        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
388        defaults to 0.0 in order to maintain backward compatibility.
389        Typical values for SEAICE_salinity are 4 to 10 g/kg.
390      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
391      * added SEAICE_availHeatFrac, which specifies fraction of surface level
392        heat content used to melt or grow ice
393      * commented out cap of HICE: it helps keep ice thinner
394      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
395      * applied OBCS T/S mask to HEFFM sea ice mask
396    
397    checkpoint59d
398    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
399     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
400     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
401    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
402     and change default value of parameter "GM_Small_Number";
403     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
404       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
405       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
406    o pkg/ecco: cost function when applying pkg/smooth to controls
407    o pkg/ctrl: add forcingPrecond run time parameter
408    o pkg/seaice:
409     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
410     - fix bug in metric terms of u-equation in LSR solver (implicit part),
411       changes verification/lab_sea
412     - rearrange implicit part of u-equation in LSR solver to make it easier to
413       read, understand, and debug. This causes changes at the truncation level.
414     - fix (serious) bug in the boundary conditions (sign error in the implicit
415       part) of the LSR solver. Changes all LSR results.
416     - fixed problem with HSNOW initialization to avoid thick snow when AREA
417       is initilized with small values - does not change lab_sea results.
418     - added HsnowFile initialization capability
419    o pkg/smooth: addition to model/src and pkg/ctrl so allow
420     initialization of pkg/smooth and application to control vector
421    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
422    o dependencies: pkg/profiles requires pkg/cal
423    o pkg/profiles:
424     - added option ALLOW_PROFILES_GENERICGRID
425         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
426         that interpolation information (grid points and coefficients) is provided
427         within the netcdf input files.
428         -> sample matlab scripts can be found in MITgcm_contrib/gael
429         that allow you to prepare netcdf input files.
430     - also modified: cleaner include statements, cleaner error print statements,
431       cleaner stops when error, and more tests of the netcdf input files consistency.
432    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
433    o pkg/seaice:
434     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
435       requires a new routine: seaice_diagnostics_fill.F
436     - make sure that seaice does not move if not forced (pressure replacement
437       method, Hibler and Ip, 1995), changes results
438     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
439     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
440       It is turned off by default (=-1.), because it changes the results.
441     - make it possible to read AREA from a file, too.
442    
443    checkpoint59c
444    o add S/R and diagnostics for oceanic mixed-layer depth
445    o move GMRedi call after all vertical mixing schemes (including KPP)
446    o pkg/thsice:
447     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
448      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
449    o pkg/obcs:
450     - bug fix for balance code
451    o pkg/seaice:
452      - allow values of SEAICE_elasticParm > 1
453      - add new parameter SEAICE_evpTauRelax as an alternative
454        to SEAICE_elasticParm
455      - make lsr boundary conditions free slip (by default), changes result
456      - add code for no slip boundary conditions for lsr
457      - set minimum of zeta to zero (and not 4e8) (changes results)
458      - add a cap on AREA after advecting AREA if seaice_growth is not called
459    o change calculation of Visbeck K:
460      - no longer depend on tapering scheme; instead, compute slope (limited
461        by GM_maxSlope). this is equivalent to what was comuted before with
462        clipping or linear tappering.
463      - fix vertical averaging (wrong by 1/2 level)
464      - leave the old version (but will not be maintained) within
465        #ifdef OLD_VISBECK_CALC / #endif
466      - update output of exp. ideal_2D_oce
467    o change error catch in calc_r_star to improve vectorization
468    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
469      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
470    o adjoint:
471      Re-organized adjoint checkpointing according to Matt Mazloff
472      (but with modifs/completions/cleanups)
473      Storing is now bundled into large arrays to optimized I/O
474      (and second step in cleanup of the_main_loop)
475    
476    checkpoint59b
477    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
478      - export/import (between ocean & coupler) fields needed for ocean DIC.
479    o pkg/seaice:
480      - get rid of three more exchanges seaice_calc_viscosities (required
481        different loop boundaries in seaice_lsr and seaice_ocean_stress)
482      - bug fix in seaice_ocean_stress (update of lab_sea required)
483      - reduce loop boundaries to necessary minimum also in seaice_evp
484      - go back to the old way of computing deltaC/Z as the adjoint likes that
485        better
486    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
487      passive tracer to an Age Tracer) + update output.txt
488    o pkg/exf:
489      - implement A-grid / C-grid selection for wind-stress input files.
490      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
491      for now, in exf_bulk_largeyeager04.F only :
492      - change implementation for case where windspeed + 2. components wind-stress
493        are read-in. AND use rhoConstFresh to convert evap.
494    o pkg/seaice:
495      - use correct EXCH_UV for wind-forcing (on A-grid).
496      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
497        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
498    o pkg/exf:
499      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
500      EXF_INTERPOLATION:
501      - merge global_with_exf/code version of exf_interp_read.F
502        to the main code ;
503      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
504        reading the file ; Important: This options needs to be defined to recover
505        previous code.
506        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
507      - no longer loose real*8 precision along the way when using exf_iprec=64.
508    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
509      - change discretisation of evp-solver in order to avoid another exchange
510        (changes lab_sea) and clean up a little
511      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
512        help the adjoint (this also changes the results slightly)
513      - add a few "_d 0" where they had been missing in seaice_evp.F
514      - cleaning up: remove unused seaice_calc_rhs.F
515    o pkg/exf: some cleaning-up:
516      - change various "constants" into runtime parameters
517      - cleaned-up Large&Yeager04 routine which should eventually
518        replace exf_bulkformulae.F (changed names of S/R and CPP)
519        and merged various ALLOW_ATM_WIND options
520     only used with thsice pkg (in thsice_get_exf.F):
521      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
522        which are used when useStabilityFct_overIce=TRUE (= the default)
523      - change default values of ice & snow emissivity and scale downward LW
524        by ice & snow emissivity.
525    o pkg/thsice:
526     fix few little problems, in thsice_calc_thickn.F:
527      - growth vertically (and not laterally) if iceFrac == iceMaskMax
528      - melt only laterally if hIce < hThinIce (as the comments say)
529      and in thsice_extend.F:
530      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
531      - start to form ice as soon as the minimum ice-volume is reachable.
532     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
533      and cpl_aim+ocn
534    o pkg/kpp
535     - move computation of surface related input fields to KPP into a new
536       subroutine kpp_forcing_surf.F
537     - remove wrong (within bi,bj loops) EXCH calls.
538     - little cleaning (add argument myThid in last position, cvs header ...)
539     - for now, fix conservation problem by exchanging KPPviscAz (may not
540       be the best fix)
541    o pkg/seaice
542     - check for inconsistent evp parameter/cpp-flag combination
543     - remove leftover errIO flat for obsolete name list error handling
544    o OpenAD
545     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
546    
547    checkpoint59a
548    o pkg/seaice: some parameter clarifications and a little bit of clean up
549    o pkg/thsice: rename run-time parameters:
550       himin       -> hIceMin
551       himin0      -> hThinIce
552       hihig       -> hThickIce
553       i0          -> i0swFrac
554       transCoef   -> bMeltCoef
555       frac_energy -> fracMelting
556      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
557       with default values (for now) that do not change the results.
558      remove old version of thsice vars advection in pkg/seaice.
559    o in FFIELDS.h:
560      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
561      - make pLoad & sIceLoad always available (but still only used if
562         ATMOSPHERIC_LOADING is #define).
563    o pkg/kpp: replaced _KPP_RL with _RL
564    o bug fixes for vertical diffusivity computations when both KPP and
565        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
566        are no longer updating the vertical diffusivity array
567        (passed as argument) but are (re-) setting those arrays.
568    o pkg/seaice: fix bug in evp solver, while doing that
569      - change (improve?) discretization of stress computations for both
570        cgrid-lsr and evp solver
571      - add a new routine to compute strain rates
572      - the above changes lab_sea results
573      - add no slip conditions for evp solver (off by default), lsr-version
574        may follow
575      - fix exchange for shear at Z-points (does not change lab_sea)
576      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
577        (to force the user to pick a time step since there is not "safe" way
578        of choosing it)
579      - add principal stress diagnostics
580      - rearrange fields for evp a little to avoid having to call a: too many
581        exchanges and b: exchanges for stress trensor components which we do
582        not have.
583      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
584        of evp, complete rewrite for lsr case (latter is does not yet work
585        in all cases)
586    o pkg/kpp: add code to have mixing in shelf ice caverns
587      - add myThid to all kpp routines (long overdue)
588    
589    checkpoint59
590    o pkg/exf:
591      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
592        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
593      - move exf header files from lower_case.h to UPPER_CASE.h ;
594        add missing cvs Header & Name
595      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
596      - add namelist param. selectStressGridPosition, exf_monFreq
597      - retire many _CLIM routines, and remove data.exf_clim
598        + params moved to data.exf
599        + climsst, climsss now handled by exf_set_gen, i.e.
600          climss?period=0 refers to constant field,
601          climss?period=-12 to monthly forcing
602      - split up namelists in data.exf
603    o pkg/seaice:
604      - remove seaice_exch and seaice_exch_uv
605      - remove superfluous exchange of theta
606      - add myThid to seaice_budget_ocean/ice
607      - add new interface for atmospheric wind forcing (C-grid only)
608        + new routine
609        + two new field (taux, tauy for stress over ice)
610        + removed one global field (DAIRN) for C-grid case only
611    o pkg/thsise
612      - 2nd set of modifs for thsice adjoint in conjunction with exf
613    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
614    
615    checkpoint58y_post
616    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
617      vertical diffusivity, similar to that in MOM4; turned on using
618      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
619      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
620    o Added capability for 3D specification of background vertical diffusion
621      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
622      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
623      "data" file that contains the 3D vertical diffusivity coefficients.
624    o ice dynamics (pkg/seaice) with thsice thermodynamics:
625      - add code within pkg thsice to advect & diffuse sea-ice fields
626      similar to (and will replace) what has been added in  seaice_advdiff.F,
627      but: - conserving Mass, Heat & Salt.
628           - better when using non-linear advection scheme (not yet fully tested)
629           - can also be used in atmospheric set-up (for now, only the diffusion).
630    
631    checkpoint58x_post
632    o IO option for global-file compact format:
633      - add options when generating topology (utils/exch2/matlab-topology-generator)
634      - add I/O capability (pkg/mdsio).
635      - adapt utils/matlab/rdmds.m to read this format.
636      for now long-line format not yet supported by pkg/mdsio (& exch2).
637    o shelfice: add a few diagnostics
638    
639    checkpoint58w_post
640    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
641      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
642      (and replace horiVertRatio in NH code).
643      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
644                         and tutorial_plume_on_slope (sensitive to truncation)
645    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
646      directly to drive seaice model (C-grid only)
647    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
648     - reintroduce computation of wind from stress,
649     - compute tau (in exf_bulkformulae.F) from windstress averaged to
650       mass points to avoid tau = 0
651     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
652    o rdmnc.m: make it work with "global" files created with gluemnc
653    o rdmnc.m : some improvements in dealing with singleton dimension
654      (tested on all testreport mnc output files).
655    o genmake2: disable pkg/profiles if netcdf test fails.
656    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
657    o move call to cal_readparms up to make calendar parameters/variable available
658      to all packages
659    
660    checkpoint58v_post
661    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
662      useDynP_inEos_Zc tested.
663    o pkg/exf: changes to properly interpolate/mask/scale initial fields
664    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
665      and portions thereof.  See read_cs.txt for description and examples.
666    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
667      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
668      following the great-circle arc between those 2 points.
669    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
670      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
671    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
672     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
673     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
674     - still needs work (not working with some options ; efficiency to improve)
675       and serious testing.
676     - use this scheme for temperature & salinity in 2 advection test exp.:
677       advect_xy & advect_xz, respectively.
678    
679    checkpoint58u_post
680    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
681    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
682    o testreport: add option "-skipdir" to skip some test.
683    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
684      momentum calculation.
685    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
686    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
687      remove checkpoint.F and the_correction_step.F (no longer used);
688      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
689    o add option (linFSConserveTr) to correct for tracer source/sink due to
690      Linear Free surface
691    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
692    o pkg/thsice: fix reading mnc-pickups
693    
694    checkpoint58t_post
695    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
696    o pkg/mdsio:
697     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
698       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
699       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
700     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
701     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
702       either MDS_READ_FIELD or MDS_WRITE_FIELD )
703     - new S/R (to replace MDSWRITEMETA), which allows to write more
704       informations (variable names, time ...) to meta files.
705     - modify rdmds.m to give back the meta file content.
706    o pkg/diagnostics: change vertical interpolation to be safer, and more
707       flexible (define p-levels to interpolate to in data.diagnostics);
708      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
709       diagnostic pointer.
710    o pkg/seaice: more cleaning up of seaice_growth, added many comments
711    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
712    o fix multi-category seaice:
713     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
714       SEAICE_MULTICATEGORY
715     - fix short wave heat flux
716    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
717       and allow to use EVP solver. Change forward lab_sea: test both EVP
718       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
719    o Initial check-in of lab_sea adjoint
720      (very similar to natl_box_adjoint/code_seaice)
721      * used C-grid and EVP solver
722      * used KPP, GM/Redi
723      * uses inAdExact=.TRUE.
724      * gradient checks fail for both ADM and TLM
725        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
726        f.d. gradients actually seem more problematic than ADM, TLM gradients;
727        issue is related to forward mismatch between g77 an ifort
728    o pkg/seaice: overhaul of thermodynamics
729     - growth.F and groatb.F are replaced by new routine seaice_growth.F
730     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
731     - move a few global fields out of SEAICE.h into seaice_growth.F and
732       make them 2D (FICE/QNETO/ ...)
733     - remove FO (it is the same as QNETO)
734     - introduce a few local fields to avoid modifying external fields such
735       as atemp, etc.
736    
737    checkpoint58s_post
738    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
739      changed exf_set_gen.F so that
740        genperiod=0 means input file is one time-constant field and
741        genperiod=-12 means input file contains 12 monthly means
742    o CG2D: use pre-computed solver main-diagonal (stored in common block);
743      this affects truncation error ; generate new output file for exp. which
744      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
745        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
746        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
747        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
748        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
749        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
750    o start implementation of deep-atmosphere and anelastic formulation
751    o verification: remove 2nd copy of input files and use script "prepare_run"
752      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
753    o mom_common/vecinv/fluxform: fix a few initialisation isssues
754    o profiles: fix for multithreaded case
755    
756    o diagnostics: rename few diags:
757      s/'PRESSURE'/'RCENTER '/g
758      s/'TICE    '/'oceFreez'/g
759      s/'TAUX    '/'oceTAUX '/g
760      s/'TAUY    '/'oceTAUY '/g
761      s/'SWFLUX  '/'oceQsw  '/g
762      s/DIFx/DFxE/g
763      s/DIFy/DFyE/g
764      and add few ocean-forcing diagnostics:
765      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
766    o modifications to pkg/seaice/growth.F and budget.F, which change results of
767      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
768      as actual snow thickness.  It now refers everywhere to effective snow
769      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
770    
771    checkpoint58r_post
772    o modifications to pkg/seaice/growth.F, which change results of
773      lab_sea experiment: fixes pertain to melting snow over open water, to
774      masking EVAP under sea ice, and to using the correct AREA variable for
775      computations of EVAP, PRECIP, HSNOW, and GHEFF
776    o add ability to read bathy, salt, and theta using MNC (off by def)
777  o add flooding algorithm and advection of HSNOW for pkg/seaice;  o add flooding algorithm and advection of HSNOW for pkg/seaice;
778    both are turned off by default and do no change any results    both are turned off by default and do no change any results
779  o seaice advection with pkg/thsice: a step toward the use of non-linear  o seaice advection with pkg/thsice: a step toward the use of non-linear

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