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revision 1.636 by jmc, Mon Mar 20 21:54:37 2006 UTC revision 1.951 by gforget, Sat Feb 2 02:41:43 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/gmredi,ctrl,ecco,autodiff,grdchk and model/src,inc:
8      - introduce isopycnal diffusion coefficient control.
9    o tools/adjoint_options:
10      - additional control vector components.
11    o pkg/mnc: have mnc create marginally meaning full coordinate variables
12      (that is the grid indices) if usingCurvilinearGrid and NOT EXCH2
13    o pkg/mypackage:
14      - add example of read/write pickup for state-var ;
15      - add entry points to the main code for state-vars diags & write-pickup.
16    o pkg/exf: rewrite of exf_getffieldrec.F to properly deal with year
17      transitions for useExfYearlyFields
18      - add new subroutine that determines the file to read from for
19        use*YearlyFields = .TRUE. and .FALSE.
20      - add a verification experiment to global_with_exf that tests
21        useExfYearlyFields with USE_EXF_INTERPOLATION defined
22    o pkg/obcs/exf: add useOBCSYearlyFields (=.FALSE.) to obcs with exf in
23      analogy to useExfYearlyFields; rearrange obcs_prescribe_read: two new
24      subroutines (which could be generated from a template, because they are
25      almost identical), for now they are included in obcs_prescribe_read.F for
26      simplicity
27    o pkg/exf:
28      - add a little more diagnostic to exf_interp_read (in analogy to
29        mds_read_field, can be turned off with debugLevel < debugLevA=1)
30      - improve vectorizability of exf_interp for TARGET_NEC_SX, makes code
31        ugly but fast by unrolling short inner loops, inserting a unroll=8
32        directive in routine lagran, and splitting a loop and making do while the
33        outermost loop (the latter requires the intoduction of index arrays)
34    o pkg/obcs: replace obcs_apply_area/heff/hsalt/hsnow with obcs_apply_seaice
35    o pkg/seaice: moved DIFFERENT_MULTIPLE from seaice_model to seaice_dynsolver
36      http://forge.csail.mit.edu/pipermail/mitgcm-devel/2008-January/003173.html
37    o verification/seaice_obcs: updated for restart test and latest options
38    o pkg/seaice: add a new flag SEAICEuseTEM to use a slightly different
39      ice rheology (so-called truncated ellipse, that gets rid of tensile stress);
40      for now this is only available for the C-grid code and also within
41      #ifdef SEAICE_ALLOW_TEM, because this option may slow down the EVP code
42    
43    checkpoint59m
44    o pkg/seaice: use different time constant for melting (SEAICE_gamma_t)
45      and freezing (SEAICE_gamma_t_frz) ice due to mixed layer temperature
46    o gad_som : fix flux output (& diagnostics) to have same units as other  
47      advection scheme fluxes (was previously multiplied by deltaT).  
48    o added verification/seaice_obcs both to test seaice open boundaries
49      and to provide an example matlab scrpt for generating them
50    o added verification/lab_sea/input.salt_plume for testing pkg/salt_plume
51    o pkg/salt_plume: clean up salt_plume_frac.F to
52      remove redundancy in PlumeMethod 1 and 4
53    o pkg/kpp: added saltplume diagnostics
54    o pkg/obcs and pkg/seaice:
55      - do not set uice and vice to zero when OB*icefile are unspecified
56      - OBCS_SEAICE_AVOID_CONVERGENCE is undefined by default
57      - moved seaice tracer obcs after call to seaice_growth
58    o pkg/salt_plume: added various options for salt plume depth
59      criterion and for vertical distribution of the salt
60    
61    checkpoint59l
62    o pkg/ptracers: new version of ptracers pickup:
63      read meta file and write only fields which are needed to restart.
64      ( same logic as main pickup file ; also using pickupStrictlyMatch )
65    o pkg/seaice:
66      - add timescale for melting due to warm mixed layer as a means of
67        setting SEAICE_availHeatFrac more conveniently
68      - add a CPP-flag/runtime parameter check for flooding algorithm
69      - reformulated availHeat in seaice_growth.F to be independent of AREA
70    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
71      unit changes
72    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
73    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
74      SX vector computer.
75    o pkg/seaice:
76      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
77        seaice forcing fields can now be read only through pkg/exf
78      - removed some unused halos
79    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
80    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
81      or U/VICE from U/VWIND before computing U/VSTRESS
82    
83    checkpoint59k
84    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
85      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
86    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
87      all experiments pass when compile with un-initialised var. checking option.
88    o added pkg/salt_plume
89    o script to test restart (for now, in MITgcm_contrib/jmc_script)
90    o pkg/seaice: new read/write pickup version.
91      read meta file and write only fields which are needed to restart.
92      ( same logic as main pickup file ; also using pickupStrictlyMatch )
93    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
94    o lab_sea.hb87: modify the domain & update output.hb87.txt :
95      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
96      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
97      process. Fixed here by closing the domain at the Northern boundary.
98    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
99    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
100      a set of consecutive levels in/from a 3-D array.
101    o pkg/ptracers:
102      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
103      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
104    
105    checkpoint59j
106    o in pkgs: dic, obcs, offline, rbcs:
107      standard way to compute coeff. for time interpolation between 2 time reccords
108      which retains full precision (& make results less dependent on compiler).
109      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
110    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
111      packages instead of reading ice cover and wind speed separately
112    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
113     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
114      to allow to compile customized code before the update)
115    o cleaning-up:
116      - fix CPP instruction syntax in pkg/obcs
117      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
118        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
119      - fix some threads issue in IO parts.
120    o pkg/dic:
121      - add tons of "_d 0" (--> much better testreports !)
122       and then update outputs of tutorial_global_oce_biogeo
123    o pkg/mom_fluxform:
124      add a special version of momentum advection intended to conserve momentum
125      next to a bathymetry step or a coastline edge. (default = off = #undef)
126    o new read/write pickup version:
127      - for now, only implemented for main (mdsio) pickup file.
128      - write out only what is needed to restart; merge pickup_nh , pickup_ph
129        and main pickup together.
130      - read meta file; read only what is needed to restart; stop if a field
131        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
132        if it make sense (even if the restart is not perfect).
133      - if no meta file, assume that pickup to read corresponds exactly to
134        a pickup that would currently be written.
135      - read pickup written in the old format (until checkpoint59i) if it
136        recognizes an old meta file (no field-list).
137      - add a meta file in exp. which starts from a pickup: 2 cases:
138        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
139         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
140        b) a meta file describing the content of the associated pickup file
141         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
142    o pkg/mdsio & pkg/rw:
143      - new routine to read a meta file ; new set of routine to read
144        Multiple-fields file (with meta file).
145    o added open boundary conditions capability for seaice
146        HSNOW, HSALT, UICE, and VICE
147    
148    checkpoint59i
149    o adjoint:
150      * fix multiDimAdvection adjoint
151        (partial recomputation problem by TAF for fVerT(:,:,kDown)
152        and comlev1 size definition (maxpass vs. max. number of tracers)
153      * verification/global_ocean.90x45x15 adjoint now tests
154        NLFS and multiDimAdvection using DST3 (=30)
155      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
156    o pkg/kpp: add "_d 0" to real constant (if missing);
157      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
158      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
159    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
160      for internal parameters related to restart process (formerly from PARAMS.h)
161      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
162    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
163      as argument. (only atm2d & obcs write_pickup have not yet been updated)
164    o pkg/monitor:
165      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
166      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
167      - account for deep Atmosphere factor and density factor (anelastic)
168    o added open boundary conditions capability for seaice HEFF and AREA
169    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
170      thermodynamics
171      - requires a little reorganization, which affects the testreport results
172        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
173        so that now the conservative form is tested
174      - add a few comments
175    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
176    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
177    o add new diagnostics to seaice: advective, diffusive fluxes (only for
178      multidim-advection, for scheme 2 they are not filled) and transports,
179      thermodynamic growth rates
180    o change units of EmPmR (inside the code, + within coupling interface)
181      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
182      Affects results @ truncation level (cg2d match) and update output of
183       experiments: lab_sea(6), global_ocean.90x40x15(10),
184      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
185      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
186      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
187      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
188    
189    checkpoint59h
190    o pkg/exf:
191      - improve vectorization by moving if-statement out of loops in
192        exf_mapfields, exf_radiation
193      - exf_bulkformulae.F: introduce 2D fields and vectorize code
194    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
195    o testreport:
196      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
197        monitor & update offline_exf_seaice exp. output.
198      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
199    o pkg/seaice:
200      - bug fix in the evp solver: boundary conditions were affected be
201        masking of zMax/zMin (changes results)
202      - minor bug fix in boundary conditions in seaice_calc_strainrates
203        (changes results for no_slip)
204      - seaice_lsr.F: make interpolation of eta dependent on boundaries
205      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
206      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
207        stress formulation and no-slip boundary conditions
208    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
209      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
210    o pkg/seaice: a first HSALT time stepping equation has been checked in
211    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
212      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
213      without requiring DO-IF statements
214    o pkg/thsice:
215      use continuous power-law function for partition of energy between lateral
216      melting/freezing and thinning/thickening ; old code using step function
217      still available with #undef THSICE_FRACEN_POWERLAW
218      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
219    o testreport: change AD testing : check against results/output_adm.txt
220      using same scripts as for forward test.
221    
222    checkpoint59g
223    o adjoint testing: in preparation for changing testreport:
224      - output format: cost and grad written on separated lines
225      - ad output results in directory "results" (instead of "results_ad")
226    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
227    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
228    o pkg/ecco: allow user defined cost function contributions
229    o testreport:
230      Allow to choose (per experiment) the list of tested output variables
231       and the main variable (used to issue a pass/FAIL ) ;
232      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
233      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
234      Also modify printing of summary:
235       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
236       b) echo the list of tested variables in the individual summary.txt of
237          each experiment.
238    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
239      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
240      (but still depend on the tile decompostion of the domain).
241    o pkg/seaice: change a discretization detail to make the B-grid code
242      "more symmetric". This change is likely to remove all "ridges/leads" that
243      where quasi-aligned with the grid in B-grid solutions. It may also be
244      the solution to the stress coupling issues with the B-grid.
245    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
246      remove .cvsignore from input dir. (since testreport no longer run here).
247    o pkg/thsice:
248     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
249     - fix reshaping of sea-ice just after advection:
250       melt all the ice only if ice-volume is too small.
251     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
252       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
253     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
254    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
255      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
256    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
257      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
258      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
259      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
260      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
261      -> update output.txt
262    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
263     this affects truncation error: -> update output.txt of exp:
264      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
265      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
266    
267    checkpoint59f
268    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
269    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
270      a bounded range (in forward mode)
271    o pkg/ecco, ctrl, autodiff and mom_common:
272     internal parameter controls, completements of implementations
273    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
274    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
275      (not seem any difference in testing results).
276    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
277       at face corners.
278    o pkg/generic_advdiff:
279     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
280      loop range indices for computing vertical advection tendency
281      and do the calculation in the interior only (no overlap) ;
282      for now, only implemented for SOM advection (to save CPU time).
283     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
284    o exch2 adjoint
285      First set of changes:
286      - add exch2 hand-written adjoint templates
287      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
288        This will require cleanup in pkg/autodiff/*.F
289        (changed routines currently kept separate in verif. code/)
290      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
291        that used to hide exch2 or cubed-sphere specific code
292        (commented via 'cph-exch2')
293    o pkg/seaice
294      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
295    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
296       output of global_ocean.cs32x15.thsice .
297    
298    checkpoint59e
299    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
300      for B-grid vector (not yet tested) and C-grid vector (<- only used
301      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
302    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
303      (#ifdef ALLOW_SALT_PLUME)
304    o gather_2d/scatter_2d: removed halo regions
305    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
306      scheme and the corresponding test case (under front_relax dir). For now,
307      only available with Skew-flux form and not yet tested in realistic set-up.
308      adjoint: store directives updated, but gradient checks deteriorated,
309      so maybe GM/Redi adjoint is now broken.
310    o seaice adjoint
311      * add AREA, HEFF, HSNOW as control variable
312        (should not change lab_sea results)
313      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
314    o pkg/seaice:
315      * added computation of saltFlux in seaice_growth;
316        For time being, sea ice salinity is assumed constant
317        contribution of snow flooding to freshening of sea ice is neglected.
318        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
319        defaults to 0.0 in order to maintain backward compatibility.
320        Typical values for SEAICE_salinity are 4 to 10 g/kg.
321      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
322      * added SEAICE_availHeatFrac, which specifies fraction of surface level
323        heat content used to melt or grow ice
324      * commented out cap of HICE: it helps keep ice thinner
325      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
326      * applied OBCS T/S mask to HEFFM sea ice mask
327    
328    checkpoint59d
329    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
330     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
331     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
332    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
333     and change default value of parameter "GM_Small_Number";
334     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
335       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
336       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
337    o pkg/ecco: cost function when applying pkg/smooth to controls
338    o pkg/ctrl: add forcingPrecond run time parameter
339    o pkg/seaice:
340     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
341     - fix bug in metric terms of u-equation in LSR solver (implicit part),
342       changes verification/lab_sea
343     - rearrange implicit part of u-equation in LSR solver to make it easier to
344       read, understand, and debug. This causes changes at the truncation level.
345     - fix (serious) bug in the boundary conditions (sign error in the implicit
346       part) of the LSR solver. Changes all LSR results.
347     - fixed problem with HSNOW initialization to avoid thick snow when AREA
348       is initilized with small values - does not change lab_sea results.
349     - added HsnowFile initialization capability
350    o pkg/smooth: addition to model/src and pkg/ctrl so allow
351     initialization of pkg/smooth and application to control vector
352    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
353    o dependencies: pkg/profiles requires pkg/cal
354    o pkg/profiles:
355     - added option ALLOW_PROFILES_GENERICGRID
356         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
357         that interpolation information (grid points and coefficients) is provided
358         within the netcdf input files.
359         -> sample matlab scripts can be found in MITgcm_contrib/gael
360         that allow you to prepare netcdf input files.
361     - also modified: cleaner include statements, cleaner error print statements,
362       cleaner stops when error, and more tests of the netcdf input files consistency.
363    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
364    o pkg/seaice:
365     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
366       requires a new routine: seaice_diagnostics_fill.F
367     - make sure that seaice does not move if not forced (pressure replacement
368       method, Hibler and Ip, 1995), changes results
369     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
370     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
371       It is turned off by default (=-1.), because it changes the results.
372     - make it possible to read AREA from a file, too.
373    
374    checkpoint59c
375    o add S/R and diagnostics for oceanic mixed-layer depth
376    o move GMRedi call after all vertical mixing schemes (including KPP)
377    o pkg/thsice:
378     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
379      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
380    o pkg/obcs:
381     - bug fix for balance code
382    o pkg/seaice:
383      - allow values of SEAICE_elasticParm > 1
384      - add new parameter SEAICE_evpTauRelax as an alternative
385        to SEAICE_elasticParm
386      - make lsr boundary conditions free slip (by default), changes result
387      - add code for no slip boundary conditions for lsr
388      - set minimum of zeta to zero (and not 4e8) (changes results)
389      - add a cap on AREA after advecting AREA if seaice_growth is not called
390    o change calculation of Visbeck K:
391      - no longer depend on tapering scheme; instead, compute slope (limited
392        by GM_maxSlope). this is equivalent to what was comuted before with
393        clipping or linear tappering.
394      - fix vertical averaging (wrong by 1/2 level)
395      - leave the old version (but will not be maintained) within
396        #ifdef OLD_VISBECK_CALC / #endif
397      - update output of exp. ideal_2D_oce
398    o change error catch in calc_r_star to improve vectorization
399    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
400      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
401    o adjoint:
402      Re-organized adjoint checkpointing according to Matt Mazloff
403      (but with modifs/completions/cleanups)
404      Storing is now bundled into large arrays to optimized I/O
405      (and second step in cleanup of the_main_loop)
406    
407    checkpoint59b
408    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
409      - export/import (between ocean & coupler) fields needed for ocean DIC.
410    o pkg/seaice:
411      - get rid of three more exchanges seaice_calc_viscosities (required
412        different loop boundaries in seaice_lsr and seaice_ocean_stress)
413      - bug fix in seaice_ocean_stress (update of lab_sea required)
414      - reduce loop boundaries to necessary minimum also in seaice_evp
415      - go back to the old way of computing deltaC/Z as the adjoint likes that
416        better
417    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
418      passive tracer to an Age Tracer) + update output.txt
419    o pkg/exf:
420      - implement A-grid / C-grid selection for wind-stress input files.
421      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
422      for now, in exf_bulk_largeyeager04.F only :
423      - change implementation for case where windspeed + 2. components wind-stress
424        are read-in. AND use rhoConstFresh to convert evap.
425    o pkg/seaice:
426      - use correct EXCH_UV for wind-forcing (on A-grid).
427      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
428        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
429    o pkg/exf:
430      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
431      EXF_INTERPOLATION:
432      - merge global_with_exf/code version of exf_interp_read.F
433        to the main code ;
434      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
435        reading the file ; Important: This options needs to be defined to recover
436        previous code.
437        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
438      - no longer loose real*8 precision along the way when using exf_iprec=64.
439    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
440      - change discretisation of evp-solver in order to avoid another exchange
441        (changes lab_sea) and clean up a little
442      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
443        help the adjoint (this also changes the results slightly)
444      - add a few "_d 0" where they had been missing in seaice_evp.F
445      - cleaning up: remove unused seaice_calc_rhs.F
446    o pkg/exf: some cleaning-up:
447      - change various "constants" into runtime parameters
448      - cleaned-up Large&Yeager04 routine which should eventually
449        replace exf_bulkformulae.F (changed names of S/R and CPP)
450        and merged various ALLOW_ATM_WIND options
451     only used with thsice pkg (in thsice_get_exf.F):
452      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
453        which are used when useStabilityFct_overIce=TRUE (= the default)
454      - change default values of ice & snow emissivity and scale downward LW
455        by ice & snow emissivity.
456    o pkg/thsice:
457     fix few little problems, in thsice_calc_thickn.F:
458      - growth vertically (and not laterally) if iceFrac == iceMaskMax
459      - melt only laterally if hIce < hThinIce (as the comments say)
460      and in thsice_extend.F:
461      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
462      - start to form ice as soon as the minimum ice-volume is reachable.
463     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
464      and cpl_aim+ocn
465    o pkg/kpp
466     - move computation of surface related input fields to KPP into a new
467       subroutine kpp_forcing_surf.F
468     - remove wrong (within bi,bj loops) EXCH calls.
469     - little cleaning (add argument myThid in last position, cvs header ...)
470     - for now, fix conservation problem by exchanging KPPviscAz (may not
471       be the best fix)
472    o pkg/seaice
473     - check for inconsistent evp parameter/cpp-flag combination
474     - remove leftover errIO flat for obsolete name list error handling
475    o OpenAD
476     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
477    
478    checkpoint59a
479    o pkg/seaice: some parameter clarifications and a little bit of clean up
480    o pkg/thsice: rename run-time parameters:
481       himin       -> hIceMin
482       himin0      -> hThinIce
483       hihig       -> hThickIce
484       i0          -> i0swFrac
485       transCoef   -> bMeltCoef
486       frac_energy -> fracMelting
487      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
488       with default values (for now) that do not change the results.
489      remove old version of thsice vars advection in pkg/seaice.
490    o in FFIELDS.h:
491      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
492      - make pLoad & sIceLoad always available (but still only used if
493         ATMOSPHERIC_LOADING is #define).
494    o pkg/kpp: replaced _KPP_RL with _RL
495    o bug fixes for vertical diffusivity computations when both KPP and
496        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
497        are no longer updating the vertical diffusivity array
498        (passed as argument) but are (re-) setting those arrays.
499    o pkg/seaice: fix bug in evp solver, while doing that
500      - change (improve?) discretization of stress computations for both
501        cgrid-lsr and evp solver
502      - add a new routine to compute strain rates
503      - the above changes lab_sea results
504      - add no slip conditions for evp solver (off by default), lsr-version
505        may follow
506      - fix exchange for shear at Z-points (does not change lab_sea)
507      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
508        (to force the user to pick a time step since there is not "safe" way
509        of choosing it)
510      - add principal stress diagnostics
511      - rearrange fields for evp a little to avoid having to call a: too many
512        exchanges and b: exchanges for stress trensor components which we do
513        not have.
514      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
515        of evp, complete rewrite for lsr case (latter is does not yet work
516        in all cases)
517    o pkg/kpp: add code to have mixing in shelf ice caverns
518      - add myThid to all kpp routines (long overdue)
519    
520    checkpoint59
521    o pkg/exf:
522      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
523        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
524      - move exf header files from lower_case.h to UPPER_CASE.h ;
525        add missing cvs Header & Name
526      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
527      - add namelist param. selectStressGridPosition, exf_monFreq
528      - retire many _CLIM routines, and remove data.exf_clim
529        + params moved to data.exf
530        + climsst, climsss now handled by exf_set_gen, i.e.
531          climss?period=0 refers to constant field,
532          climss?period=-12 to monthly forcing
533      - split up namelists in data.exf
534    o pkg/seaice:
535      - remove seaice_exch and seaice_exch_uv
536      - remove superfluous exchange of theta
537      - add myThid to seaice_budget_ocean/ice
538      - add new interface for atmospheric wind forcing (C-grid only)
539        + new routine
540        + two new field (taux, tauy for stress over ice)
541        + removed one global field (DAIRN) for C-grid case only
542    o pkg/thsise
543      - 2nd set of modifs for thsice adjoint in conjunction with exf
544    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
545    
546    checkpoint58y_post
547    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
548      vertical diffusivity, similar to that in MOM4; turned on using
549      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
550      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
551    o Added capability for 3D specification of background vertical diffusion
552      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
553      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
554      "data" file that contains the 3D vertical diffusivity coefficients.
555    o ice dynamics (pkg/seaice) with thsice thermodynamics:
556      - add code within pkg thsice to advect & diffuse sea-ice fields
557      similar to (and will replace) what has been added in  seaice_advdiff.F,
558      but: - conserving Mass, Heat & Salt.
559           - better when using non-linear advection scheme (not yet fully tested)
560           - can also be used in atmospheric set-up (for now, only the diffusion).
561    
562    checkpoint58x_post
563    o IO option for global-file compact format:
564      - add options when generating topology (utils/exch2/matlab-topology-generator)
565      - add I/O capability (pkg/mdsio).
566      - adapt utils/matlab/rdmds.m to read this format.
567      for now long-line format not yet supported by pkg/mdsio (& exch2).
568    o shelfice: add a few diagnostics
569    
570    checkpoint58w_post
571    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
572      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
573      (and replace horiVertRatio in NH code).
574      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
575                         and tutorial_plume_on_slope (sensitive to truncation)
576    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
577      directly to drive seaice model (C-grid only)
578    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
579     - reintroduce computation of wind from stress,
580     - compute tau (in exf_bulkformulae.F) from windstress averaged to
581       mass points to avoid tau = 0
582     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
583    o rdmnc.m: make it work with "global" files created with gluemnc
584    o rdmnc.m : some improvements in dealing with singleton dimension
585      (tested on all testreport mnc output files).
586    o genmake2: disable pkg/profiles if netcdf test fails.
587    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
588    o move call to cal_readparms up to make calendar parameters/variable available
589      to all packages
590    
591    checkpoint58v_post
592    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
593      useDynP_inEos_Zc tested.
594    o pkg/exf: changes to properly interpolate/mask/scale initial fields
595    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
596      and portions thereof.  See read_cs.txt for description and examples.
597    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
598      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
599      following the great-circle arc between those 2 points.
600    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
601      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
602    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
603     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
604     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
605     - still needs work (not working with some options ; efficiency to improve)
606       and serious testing.
607     - use this scheme for temperature & salinity in 2 advection test exp.:
608       advect_xy & advect_xz, respectively.
609    
610    checkpoint58u_post
611    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
612    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
613    o testreport: add option "-skipdir" to skip some test.
614    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
615      momentum calculation.
616    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
617    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
618      remove checkpoint.F and the_correction_step.F (no longer used);
619      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
620    o add option (linFSConserveTr) to correct for tracer source/sink due to
621      Linear Free surface
622    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
623    o pkg/thsice: fix reading mnc-pickups
624    
625    checkpoint58t_post
626    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
627    o pkg/mdsio:
628     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
629       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
630       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
631     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
632     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
633       either MDS_READ_FIELD or MDS_WRITE_FIELD )
634     - new S/R (to replace MDSWRITEMETA), which allows to write more
635       informations (variable names, time ...) to meta files.
636     - modify rdmds.m to give back the meta file content.
637    o pkg/diagnostics: change vertical interpolation to be safer, and more
638       flexible (define p-levels to interpolate to in data.diagnostics);
639      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
640       diagnostic pointer.
641    o pkg/seaice: more cleaning up of seaice_growth, added many comments
642    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
643    o fix multi-category seaice:
644     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
645       SEAICE_MULTICATEGORY
646     - fix short wave heat flux
647    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
648       and allow to use EVP solver. Change forward lab_sea: test both EVP
649       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
650    o Initial check-in of lab_sea adjoint
651      (very similar to natl_box_adjoint/code_seaice)
652      * used C-grid and EVP solver
653      * used KPP, GM/Redi
654      * uses inAdExact=.TRUE.
655      * gradient checks fail for both ADM and TLM
656        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
657        f.d. gradients actually seem more problematic than ADM, TLM gradients;
658        issue is related to forward mismatch between g77 an ifort
659    o pkg/seaice: overhaul of thermodynamics
660     - growth.F and groatb.F are replaced by new routine seaice_growth.F
661     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
662     - move a few global fields out of SEAICE.h into seaice_growth.F and
663       make them 2D (FICE/QNETO/ ...)
664     - remove FO (it is the same as QNETO)
665     - introduce a few local fields to avoid modifying external fields such
666       as atemp, etc.
667    
668    checkpoint58s_post
669    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
670      changed exf_set_gen.F so that
671        genperiod=0 means input file is one time-constant field and
672        genperiod=-12 means input file contains 12 monthly means
673    o CG2D: use pre-computed solver main-diagonal (stored in common block);
674      this affects truncation error ; generate new output file for exp. which
675      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
676        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
677        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
678        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
679        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
680        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
681    o start implementation of deep-atmosphere and anelastic formulation
682    o verification: remove 2nd copy of input files and use script "prepare_run"
683      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
684    o mom_common/vecinv/fluxform: fix a few initialisation isssues
685    o profiles: fix for multithreaded case
686    
687    o diagnostics: rename few diags:
688      s/'PRESSURE'/'RCENTER '/g
689      s/'TICE    '/'oceFreez'/g
690      s/'TAUX    '/'oceTAUX '/g
691      s/'TAUY    '/'oceTAUY '/g
692      s/'SWFLUX  '/'oceQsw  '/g
693      s/DIFx/DFxE/g
694      s/DIFy/DFyE/g
695      and add few ocean-forcing diagnostics:
696      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
697    o modifications to pkg/seaice/growth.F and budget.F, which change results of
698      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
699      as actual snow thickness.  It now refers everywhere to effective snow
700      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
701    
702    checkpoint58r_post
703    o modifications to pkg/seaice/growth.F, which change results of
704      lab_sea experiment: fixes pertain to melting snow over open water, to
705      masking EVAP under sea ice, and to using the correct AREA variable for
706      computations of EVAP, PRECIP, HSNOW, and GHEFF
707    o add ability to read bathy, salt, and theta using MNC (off by def)
708    o add flooding algorithm and advection of HSNOW for pkg/seaice;
709      both are turned off by default and do no change any results
710    o seaice advection with pkg/thsice: a step toward the use of non-linear
711      advection scheme, but #ifdef or commented out for now (requires more EXCH).
712    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
713      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
714      in natl_box (affects results @ truncation level: update output.txt)
715    o multi-threading and IO:
716      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
717      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
718        (needed to work with SingleCpuIO): tested in all verif. exp.
719    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
720      affects the results (but none of the verification test uses this scheme).
721    o Adding some pkg/diagnostics capability to pkg/seaice
722      (will certainly be subject to changes)
723    o ctrl: adding new control variables:
724      lwflux, lwdown, evap, snowprecip, apressure, runoff
725    
726    checkpoint58q_post
727    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
728      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
729      high_res_cube configuration by 4% on Columbia.
730    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
731      add (in global_with_exf/code) a version of EXF_INTERP_READ without
732      dynamical allocation (seems to work in multi-threaded).
733    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
734      single CPU io) so that TAF does not have to see EESUPPORT.h
735    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
736    
737    checkpoint58p_post
738    o obcs: stop if obcs is used with useCDscheme = .true.
739    o shelfice:
740     - fix a sign error so that no slip at shelfice interface works
741     - remove stop for combination non-hydrostatic code and shelfice. That does
742       not mean, that the results are correct, but at least they are numerically
743       stable
744    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
745    o added adjoint exch routined for all exch*3d* routines
746      and updated flow directives
747    
748    checkpoint58o_post
749    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
750      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
751    o change controling S/R for writing pickup file (new S/R do_write_pickup)
752      and clean-up reading/writing of pickup files.
753    o fix local version of read/write pickup (NH part) in rotating_tank/code
754    o simplify EXCH interface:
755     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
756     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
757    o added the regrid package
758    o shelfice:
759     - add a simple boundary layer scheme to reduce noise
760     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
761    
762    checkpoint58n_post
763    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
764       local variable (not in common block).
765    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
766      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
767      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
768        to work with SingleCpuIO.
769    o add "_d 0" to real constant of pkg/cfc subroutines ;
770       update exp. cfc_exemple & tutorial_cfc_offline output files.
771    o multi-threading and IO:
772      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
773        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
774      - barrier before and after reading.
775      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
776      - avoid using MDS_WRITELOCAL for LAND pkg output.
777      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
778        common-block variables ; Allows multi-threading with master-thread IO.
779    o change default MAX_NO_THREADS from 32 to 4 ;
780      and stop cleanly when MAX_NO_THREADS is too small.
781    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
782    
783    checkpoint58m_post
784    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
785       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
786    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
787       keep global_ocean.90x40x15 (for AD testing) with former secondary test
788       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
789    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
790        add MITgcm_tutorials (= code + all the tutorials)
791    o ecco, option to compute cost for total ssh (mean+anom)
792    o consistent with addition of ptracer and ssh in pkg/profiles
793    o profiles: adding ptracer and ssh
794    o testreport: change multi-test output-file name
795      (from output.txt.{name} to output.{name}.txt)
796    o profiles: now ok for mutli-tiles case
797    o seaice: add 4 parameters for different advection schemes for area,
798      (effective) seaice thickness, enthalphy, and snow height. Their default
799      is the standard parameter SEAICEadvScheme
800    o calc_gw:
801     - add cosFacU in zonal viscous flux (harmonic.visc.).
802     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
803       of tutorial_plume_on_slope.
804    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
805    o calc_gw: true flux-form, account for horizontal grid spacing.
806      update rotating_tank results, but not plume_on_slope (affected at
807      truncation level, 11 digits).
808    
809    checkpoint58l_post
810    o calc_gw:
811     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
812     - remove side-drag for now (need to fix it); update plume_on_slope results.
813     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
814    o commit code to make SST/SSS weights spatially variable
815      (based on either variable in-situ or variable initial T/S weights)
816    o pkg/ecco:
817      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
818        now based on horizontally varying weights wthetaLev, wsaltLev
819      * cost_averagesflags now returns year indices in addition to day, month
820      * sflux balance is performed on annual basis
821        (sflxumm, sfluxmm2, bal_sfluxmm)
822      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
823        including separate counting and multipliers
824    o pkg/rbcs
825      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
826    
827    checkpoint58k_post
828    o testreport:
829     - always build in dir. "build" (if not there, mkdir build instead of building
830       & running in input)
831     - run in dir run (if it exists), in build otherwise.
832     - call prepare_run (if input/prepare_run exists)
833     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
834    o pkg/exf modifications to interpolation and rotation routines for more
835       reasonable treatment of North Pole singularity: for tracers North Pole
836       value is set to northernmost zonal-mean value, for zonal velocity it is
837       set to zero, and for meridional velocity it is set to northernmost value.
838    o pkg/exf/exf_check_range.F
839     - add tile index to diagnostics and move stop statement to the very
840       end of the routine.
841    o pkg/diagnostics: (diagnostics_main_init.F)
842      define title of isomorphic variables according to the current config.
843    o pkg/thsice with pkg/seaice dynamics:
844    - fix domain of computation (interior only, required for exf) and do exchanges
845    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
846    o towards a standard way of dealing with multi-threading in MONITOR
847      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
848    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
849       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
850    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
851    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
852    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
853       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
854    o tracer advection:
855     - clean-up and simplify calc_common_factors.F
856     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
857       advection subroutine (but still not used within DST advection S/R)
858    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
859    
860    checkpoint58j_post
861    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
862      from file (collects calls previously in FORWARD_STEP)
863    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
864    o adjoint store dir. adjusted accordingly
865    o genmake2
866      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
867    
868    checkpoint58i_post
869    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
870      on wind stress (SEAICEstressFactor defaults to 1.)
871    o Total number of Timers is finite (<=40): comment out 2 non-essential one
872      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
873    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
874      on CS-grid: no longer loosing mass.
875    o exf & curvilinear-grid: no longer modify longitude xC & xG.
876    o pkg/ggl90: fix sloppy output and fix a bug
877    o pkg/seaice: added SEAICEuseEVPpickup parameter
878      - Set to false in order to start EVP solver with
879        non-EVP pickup files when using SEAICEuseEVP
880      - fix sign error in diffusion in seaice_calc_rhs
881    
882    checkpoint58h_post
883    * Modifications for bottom topography control
884      o replace hFacC by _hFacC at various places
885      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
886      o add non-self-adjoint cg2d_nsa
887      o update autodiff support routines
888      o re-initialise hfac after ctrl_depth_ini
889      o works for 5x5 box, doesnt work for global_ocean.90x40x15
890    * Adding verification for 5x5 box (4-layer) bottom topography control
891    
892    checkpoint58g_post
893    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
894       used for mean seasonal cycle, mean diurnal cycle); add an example
895       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
896    o pkg/ggl90:
897      - add parameter (minimum surface kinetic energy)
898      - fix bug (avoiding division by zero)
899    o couple pkg/thsice to pkg/seaice:
900      - modify advection in seaice to accomodate new scalar fields to be advected
901      - only muliDimAdection scheme work with seaice/thsice
902      - mapping of thsice-variables to seaice-variables, back and forth
903      - does not break the verification experiments, but does not give the
904        desired results either
905    o pkg/seaice
906      - make (default) second order advection a bit less confusing?
907    
908    checkpoint58f_post
909    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
910      to pkg/seaice):
911      - new routines thsice_map_exf and thsice_get_exf provide the interface
912      - add an additional formal parameter to thsice_solve4temp
913    o pkg/exf:
914      - add new fields wspeed, snowprecip (to be able to couple to thsice)
915      - correct Stefan-Boltzmann constant
916      - new parameter for longwave surface emittance
917      - separate some stuff from exf_bulkformulae into new routines  
918        exf_radiation, exf_wind
919      - add new parameters and constants: longwave emissivity for ocean, ice
920        and snow, evaporation parameters over ice
921      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
922        either wind from stress or stress from wind
923    o pkg/thSIce:
924    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
925    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
926       and THSICE_CALC_THICKN
927    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
928    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
929      to make debugging easier.
930    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
931    o pkg/bulk_force:
932      - clean-up comments and parameters ;
933      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
934    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
935      generate new output for test-experiment: aim.5l_cs.thSI
936    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
937      testreport accordingly
938    
939    checkpoint58e_post
940    o SEAICE_CGRID adjoint done
941    o R_STAR adjoint implemented.
942      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
943      * need to sort out init. of h0facc, etc.
944    o Make pkg/profile fully independent of ecco,cost, etc. stuff
945      to be able to use it in pure forward.
946    
947    checkpoint58d_post
948    o upgrade simple test-experiment to tutorial example:
949     step.1: duplicate the experiment and (step.2) will remove the old copy.
950      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
951      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
952      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
953      tutorial_global_oce_biogeo    <- copy of dic_example
954      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
955      tutorial_plume_on_slope       <- copy of plume_on_slope
956      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
957      tutorial_global_oce_optim     <- empty for now (David ?)
958      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
959     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
960    o correct a sign problem in cost_scat.F
961    o obcs and ptracers: fix boundary conditions for advections schemes
962      with larger stencil
963    o thsice adjoint: start
964    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
965      completeness
966    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
967      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
968    o ptracers adjoint:
969      * avoid extensive recomputatations
970      * fix missing re-init. of gptr (missed by TAF)
971    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
972      me to turn off the excessive output to STDOUT that this package produces
973    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
974      and add those terms in Vector-Invariant formulation.
975    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
976      if the control period (xx_hfluxperiod etc) is 0
977    o in profiles pkg, clean routines and fix details
978    o in ecco pkg, reading ssh data:
979      fix problem in case the model does not start at iter0=0
980    o fix mnc-pickup/restart for ptracers
981    o new package prifiles:
982      code to compute profile-based cost by Gael Forget
983      (modifs in ecco, ctrl, autodiff)
984    o Benign bug fix in initialization (spotted by M. Mazloff) of
985      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
986    
987    checkpoint58c_post
988    o adjoint: finish NLFS adjoint and provide reference output in
989      verification/global_ocean.90x40x15/results_ad_nlfs
990    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
991      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
992      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
993      with SEAICE_CGRID defined.
994  o move calendarDumps from "data" to "data.cal" and clean-up the code  o move calendarDumps from "data" to "data.cal" and clean-up the code
995    with a simple call to pkg/cal S/R: CAL_TIME2WRITE    with a simple call to pkg/cal S/R: CAL_TIME2WRITE
996  o add useEXF & useCAL flags (for now, set in hard-coded way)  o add useEXF & useCAL flags (for now, set in hard-coded way)

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