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revision 1.629 by mlosch, Tue Mar 14 11:41:17 2006 UTC revision 1.940 by dimitri, Thu Jan 17 20:48:07 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 seaice: modify advection so that it works also on the C-grid  o verification/seaice_obcs: updated for restart test and latest options
8    o pkg/seaice: add a new flag SEAICEuseTEM to use a slightly different
9      ice rheology (so-called truncated ellipse, that gets rid of tensile stress);
10      for now this is only available for the C-grid code and also within
11      #ifdef SEAICE_ALLOW_TEM, because this option may slow down the EVP code
12    
13    checkpoint59m
14    o pkg/seaice: use different time constant for melting (SEAICE_gamma_t)
15      and freezing (SEAICE_gamma_t_frz) ice due to mixed layer temperature
16    o gad_som : fix flux output (& diagnostics) to have same units as other  
17      advection scheme fluxes (was previously multiplied by deltaT).  
18    o added verification/seaice_obcs both to test seaice open boundaries
19      and to provide an example matlab scrpt for generating them
20    o added verification/lab_sea/input.salt_plume for testing pkg/salt_plume
21    o pkg/salt_plume: clean up salt_plume_frac.F to
22      remove redundancy in PlumeMethod 1 and 4
23    o pkg/kpp: added saltplume diagnostics
24    o pkg/obcs and pkg/seaice:
25      - do not set uice and vice to zero when OB*icefile are unspecified
26      - OBCS_SEAICE_AVOID_CONVERGENCE is undefined by default
27      - moved seaice tracer obcs after call to seaice_growth
28    o pkg/salt_plume: added various options for salt plume depth
29      criterion and for vertical distribution of the salt
30    
31    checkpoint59l
32    o pkg/ptracers: new version of ptracers pickup:
33      read meta file and write only fields which are needed to restart.
34      ( same logic as main pickup file ; also using pickupStrictlyMatch )
35    o pkg/seaice:
36      - add timescale for melting due to warm mixed layer as a means of
37        setting SEAICE_availHeatFrac more conveniently
38      - add a CPP-flag/runtime parameter check for flooding algorithm
39      - reformulated availHeat in seaice_growth.F to be independent of AREA
40    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
41      unit changes
42    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
43    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
44      SX vector computer.
45    o pkg/seaice:
46      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
47        seaice forcing fields can now be read only through pkg/exf
48      - removed some unused halos
49    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
50    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
51      or U/VICE from U/VWIND before computing U/VSTRESS
52    
53    checkpoint59k
54    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
55      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
56    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
57      all experiments pass when compile with un-initialised var. checking option.
58    o added pkg/salt_plume
59    o script to test restart (for now, in MITgcm_contrib/jmc_script)
60    o pkg/seaice: new read/write pickup version.
61      read meta file and write only fields which are needed to restart.
62      ( same logic as main pickup file ; also using pickupStrictlyMatch )
63    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
64    o lab_sea.hb87: modify the domain & update output.hb87.txt :
65      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
66      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
67      process. Fixed here by closing the domain at the Northern boundary.
68    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
69    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
70      a set of consecutive levels in/from a 3-D array.
71    o pkg/ptracers:
72      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
73      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
74    
75    checkpoint59j
76    o in pkgs: dic, obcs, offline, rbcs:
77      standard way to compute coeff. for time interpolation between 2 time reccords
78      which retains full precision (& make results less dependent on compiler).
79      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
80    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
81      packages instead of reading ice cover and wind speed separately
82    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
83     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
84      to allow to compile customized code before the update)
85    o cleaning-up:
86      - fix CPP instruction syntax in pkg/obcs
87      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
88        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
89      - fix some threads issue in IO parts.
90    o pkg/dic:
91      - add tons of "_d 0" (--> much better testreports !)
92       and then update outputs of tutorial_global_oce_biogeo
93    o pkg/mom_fluxform:
94      add a special version of momentum advection intended to conserve momentum
95      next to a bathymetry step or a coastline edge. (default = off = #undef)
96    o new read/write pickup version:
97      - for now, only implemented for main (mdsio) pickup file.
98      - write out only what is needed to restart; merge pickup_nh , pickup_ph
99        and main pickup together.
100      - read meta file; read only what is needed to restart; stop if a field
101        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
102        if it make sense (even if the restart is not perfect).
103      - if no meta file, assume that pickup to read corresponds exactly to
104        a pickup that would currently be written.
105      - read pickup written in the old format (until checkpoint59i) if it
106        recognizes an old meta file (no field-list).
107      - add a meta file in exp. which starts from a pickup: 2 cases:
108        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
109         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
110        b) a meta file describing the content of the associated pickup file
111         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
112    o pkg/mdsio & pkg/rw:
113      - new routine to read a meta file ; new set of routine to read
114        Multiple-fields file (with meta file).
115    o added open boundary conditions capability for seaice
116        HSNOW, HSALT, UICE, and VICE
117    
118    checkpoint59i
119    o adjoint:
120      * fix multiDimAdvection adjoint
121        (partial recomputation problem by TAF for fVerT(:,:,kDown)
122        and comlev1 size definition (maxpass vs. max. number of tracers)
123      * verification/global_ocean.90x45x15 adjoint now tests
124        NLFS and multiDimAdvection using DST3 (=30)
125      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
126    o pkg/kpp: add "_d 0" to real constant (if missing);
127      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
128      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
129    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
130      for internal parameters related to restart process (formerly from PARAMS.h)
131      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
132    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
133      as argument. (only atm2d & obcs write_pickup have not yet been updated)
134    o pkg/monitor:
135      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
136      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
137      - account for deep Atmosphere factor and density factor (anelastic)
138    o added open boundary conditions capability for seaice HEFF and AREA
139    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
140      thermodynamics
141      - requires a little reorganization, which affects the testreport results
142        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
143        so that now the conservative form is tested
144      - add a few comments
145    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
146    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
147    o add new diagnostics to seaice: advective, diffusive fluxes (only for
148      multidim-advection, for scheme 2 they are not filled) and transports,
149      thermodynamic growth rates
150    o change units of EmPmR (inside the code, + within coupling interface)
151      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
152      Affects results @ truncation level (cg2d match) and update output of
153       experiments: lab_sea(6), global_ocean.90x40x15(10),
154      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
155      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
156      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
157      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
158    
159    checkpoint59h
160    o pkg/exf:
161      - improve vectorization by moving if-statement out of loops in
162        exf_mapfields, exf_radiation
163      - exf_bulkformulae.F: introduce 2D fields and vectorize code
164    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
165    o testreport:
166      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
167        monitor & update offline_exf_seaice exp. output.
168      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
169    o pkg/seaice:
170      - bug fix in the evp solver: boundary conditions were affected be
171        masking of zMax/zMin (changes results)
172      - minor bug fix in boundary conditions in seaice_calc_strainrates
173        (changes results for no_slip)
174      - seaice_lsr.F: make interpolation of eta dependent on boundaries
175      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
176      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
177        stress formulation and no-slip boundary conditions
178    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
179      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
180    o pkg/seaice: a first HSALT time stepping equation has been checked in
181    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
182      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
183      without requiring DO-IF statements
184    o pkg/thsice:
185      use continuous power-law function for partition of energy between lateral
186      melting/freezing and thinning/thickening ; old code using step function
187      still available with #undef THSICE_FRACEN_POWERLAW
188      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
189    o testreport: change AD testing : check against results/output_adm.txt
190      using same scripts as for forward test.
191    
192    checkpoint59g
193    o adjoint testing: in preparation for changing testreport:
194      - output format: cost and grad written on separated lines
195      - ad output results in directory "results" (instead of "results_ad")
196    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
197    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
198    o pkg/ecco: allow user defined cost function contributions
199    o testreport:
200      Allow to choose (per experiment) the list of tested output variables
201       and the main variable (used to issue a pass/FAIL ) ;
202      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
203      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
204      Also modify printing of summary:
205       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
206       b) echo the list of tested variables in the individual summary.txt of
207          each experiment.
208    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
209      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
210      (but still depend on the tile decompostion of the domain).
211    o pkg/seaice: change a discretization detail to make the B-grid code
212      "more symmetric". This change is likely to remove all "ridges/leads" that
213      where quasi-aligned with the grid in B-grid solutions. It may also be
214      the solution to the stress coupling issues with the B-grid.
215    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
216      remove .cvsignore from input dir. (since testreport no longer run here).
217    o pkg/thsice:
218     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
219     - fix reshaping of sea-ice just after advection:
220       melt all the ice only if ice-volume is too small.
221     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
222       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
223     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
224    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
225      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
226    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
227      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
228      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
229      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
230      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
231      -> update output.txt
232    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
233     this affects truncation error: -> update output.txt of exp:
234      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
235      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
236    
237    checkpoint59f
238    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
239    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
240      a bounded range (in forward mode)
241    o pkg/ecco, ctrl, autodiff and mom_common:
242     internal parameter controls, completements of implementations
243    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
244    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
245      (not seem any difference in testing results).
246    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
247       at face corners.
248    o pkg/generic_advdiff:
249     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
250      loop range indices for computing vertical advection tendency
251      and do the calculation in the interior only (no overlap) ;
252      for now, only implemented for SOM advection (to save CPU time).
253     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
254    o exch2 adjoint
255      First set of changes:
256      - add exch2 hand-written adjoint templates
257      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
258        This will require cleanup in pkg/autodiff/*.F
259        (changed routines currently kept separate in verif. code/)
260      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
261        that used to hide exch2 or cubed-sphere specific code
262        (commented via 'cph-exch2')
263    o pkg/seaice
264      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
265    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
266       output of global_ocean.cs32x15.thsice .
267    
268    checkpoint59e
269    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
270      for B-grid vector (not yet tested) and C-grid vector (<- only used
271      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
272    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
273      (#ifdef ALLOW_SALT_PLUME)
274    o gather_2d/scatter_2d: removed halo regions
275    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
276      scheme and the corresponding test case (under front_relax dir). For now,
277      only available with Skew-flux form and not yet tested in realistic set-up.
278      adjoint: store directives updated, but gradient checks deteriorated,
279      so maybe GM/Redi adjoint is now broken.
280    o seaice adjoint
281      * add AREA, HEFF, HSNOW as control variable
282        (should not change lab_sea results)
283      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
284    o pkg/seaice:
285      * added computation of saltFlux in seaice_growth;
286        For time being, sea ice salinity is assumed constant
287        contribution of snow flooding to freshening of sea ice is neglected.
288        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
289        defaults to 0.0 in order to maintain backward compatibility.
290        Typical values for SEAICE_salinity are 4 to 10 g/kg.
291      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
292      * added SEAICE_availHeatFrac, which specifies fraction of surface level
293        heat content used to melt or grow ice
294      * commented out cap of HICE: it helps keep ice thinner
295      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
296      * applied OBCS T/S mask to HEFFM sea ice mask
297    
298    checkpoint59d
299    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
300     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
301     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
302    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
303     and change default value of parameter "GM_Small_Number";
304     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
305       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
306       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
307    o pkg/ecco: cost function when applying pkg/smooth to controls
308    o pkg/ctrl: add forcingPrecond run time parameter
309    o pkg/seaice:
310     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
311     - fix bug in metric terms of u-equation in LSR solver (implicit part),
312       changes verification/lab_sea
313     - rearrange implicit part of u-equation in LSR solver to make it easier to
314       read, understand, and debug. This causes changes at the truncation level.
315     - fix (serious) bug in the boundary conditions (sign error in the implicit
316       part) of the LSR solver. Changes all LSR results.
317     - fixed problem with HSNOW initialization to avoid thick snow when AREA
318       is initilized with small values - does not change lab_sea results.
319     - added HsnowFile initialization capability
320    o pkg/smooth: addition to model/src and pkg/ctrl so allow
321     initialization of pkg/smooth and application to control vector
322    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
323    o dependencies: pkg/profiles requires pkg/cal
324    o pkg/profiles:
325     - added option ALLOW_PROFILES_GENERICGRID
326         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
327         that interpolation information (grid points and coefficients) is provided
328         within the netcdf input files.
329         -> sample matlab scripts can be found in MITgcm_contrib/gael
330         that allow you to prepare netcdf input files.
331     - also modified: cleaner include statements, cleaner error print statements,
332       cleaner stops when error, and more tests of the netcdf input files consistency.
333    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
334    o pkg/seaice:
335     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
336       requires a new routine: seaice_diagnostics_fill.F
337     - make sure that seaice does not move if not forced (pressure replacement
338       method, Hibler and Ip, 1995), changes results
339     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
340     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
341       It is turned off by default (=-1.), because it changes the results.
342     - make it possible to read AREA from a file, too.
343    
344    checkpoint59c
345    o add S/R and diagnostics for oceanic mixed-layer depth
346    o move GMRedi call after all vertical mixing schemes (including KPP)
347    o pkg/thsice:
348     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
349      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
350    o pkg/obcs:
351     - bug fix for balance code
352    o pkg/seaice:
353      - allow values of SEAICE_elasticParm > 1
354      - add new parameter SEAICE_evpTauRelax as an alternative
355        to SEAICE_elasticParm
356      - make lsr boundary conditions free slip (by default), changes result
357      - add code for no slip boundary conditions for lsr
358      - set minimum of zeta to zero (and not 4e8) (changes results)
359      - add a cap on AREA after advecting AREA if seaice_growth is not called
360    o change calculation of Visbeck K:
361      - no longer depend on tapering scheme; instead, compute slope (limited
362        by GM_maxSlope). this is equivalent to what was comuted before with
363        clipping or linear tappering.
364      - fix vertical averaging (wrong by 1/2 level)
365      - leave the old version (but will not be maintained) within
366        #ifdef OLD_VISBECK_CALC / #endif
367      - update output of exp. ideal_2D_oce
368    o change error catch in calc_r_star to improve vectorization
369    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
370      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
371    o adjoint:
372      Re-organized adjoint checkpointing according to Matt Mazloff
373      (but with modifs/completions/cleanups)
374      Storing is now bundled into large arrays to optimized I/O
375      (and second step in cleanup of the_main_loop)
376    
377    checkpoint59b
378    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
379      - export/import (between ocean & coupler) fields needed for ocean DIC.
380    o pkg/seaice:
381      - get rid of three more exchanges seaice_calc_viscosities (required
382        different loop boundaries in seaice_lsr and seaice_ocean_stress)
383      - bug fix in seaice_ocean_stress (update of lab_sea required)
384      - reduce loop boundaries to necessary minimum also in seaice_evp
385      - go back to the old way of computing deltaC/Z as the adjoint likes that
386        better
387    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
388      passive tracer to an Age Tracer) + update output.txt
389    o pkg/exf:
390      - implement A-grid / C-grid selection for wind-stress input files.
391      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
392      for now, in exf_bulk_largeyeager04.F only :
393      - change implementation for case where windspeed + 2. components wind-stress
394        are read-in. AND use rhoConstFresh to convert evap.
395    o pkg/seaice:
396      - use correct EXCH_UV for wind-forcing (on A-grid).
397      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
398        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
399    o pkg/exf:
400      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
401      EXF_INTERPOLATION:
402      - merge global_with_exf/code version of exf_interp_read.F
403        to the main code ;
404      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
405        reading the file ; Important: This options needs to be defined to recover
406        previous code.
407        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
408      - no longer loose real*8 precision along the way when using exf_iprec=64.
409    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
410      - change discretisation of evp-solver in order to avoid another exchange
411        (changes lab_sea) and clean up a little
412      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
413        help the adjoint (this also changes the results slightly)
414      - add a few "_d 0" where they had been missing in seaice_evp.F
415      - cleaning up: remove unused seaice_calc_rhs.F
416    o pkg/exf: some cleaning-up:
417      - change various "constants" into runtime parameters
418      - cleaned-up Large&Yeager04 routine which should eventually
419        replace exf_bulkformulae.F (changed names of S/R and CPP)
420        and merged various ALLOW_ATM_WIND options
421     only used with thsice pkg (in thsice_get_exf.F):
422      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
423        which are used when useStabilityFct_overIce=TRUE (= the default)
424      - change default values of ice & snow emissivity and scale downward LW
425        by ice & snow emissivity.
426    o pkg/thsice:
427     fix few little problems, in thsice_calc_thickn.F:
428      - growth vertically (and not laterally) if iceFrac == iceMaskMax
429      - melt only laterally if hIce < hThinIce (as the comments say)
430      and in thsice_extend.F:
431      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
432      - start to form ice as soon as the minimum ice-volume is reachable.
433     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
434      and cpl_aim+ocn
435    o pkg/kpp
436     - move computation of surface related input fields to KPP into a new
437       subroutine kpp_forcing_surf.F
438     - remove wrong (within bi,bj loops) EXCH calls.
439     - little cleaning (add argument myThid in last position, cvs header ...)
440     - for now, fix conservation problem by exchanging KPPviscAz (may not
441       be the best fix)
442    o pkg/seaice
443     - check for inconsistent evp parameter/cpp-flag combination
444     - remove leftover errIO flat for obsolete name list error handling
445    o OpenAD
446     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
447    
448    checkpoint59a
449    o pkg/seaice: some parameter clarifications and a little bit of clean up
450    o pkg/thsice: rename run-time parameters:
451       himin       -> hIceMin
452       himin0      -> hThinIce
453       hihig       -> hThickIce
454       i0          -> i0swFrac
455       transCoef   -> bMeltCoef
456       frac_energy -> fracMelting
457      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
458       with default values (for now) that do not change the results.
459      remove old version of thsice vars advection in pkg/seaice.
460    o in FFIELDS.h:
461      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
462      - make pLoad & sIceLoad always available (but still only used if
463         ATMOSPHERIC_LOADING is #define).
464    o pkg/kpp: replaced _KPP_RL with _RL
465    o bug fixes for vertical diffusivity computations when both KPP and
466        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
467        are no longer updating the vertical diffusivity array
468        (passed as argument) but are (re-) setting those arrays.
469    o pkg/seaice: fix bug in evp solver, while doing that
470      - change (improve?) discretization of stress computations for both
471        cgrid-lsr and evp solver
472      - add a new routine to compute strain rates
473      - the above changes lab_sea results
474      - add no slip conditions for evp solver (off by default), lsr-version
475        may follow
476      - fix exchange for shear at Z-points (does not change lab_sea)
477      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
478        (to force the user to pick a time step since there is not "safe" way
479        of choosing it)
480      - add principal stress diagnostics
481      - rearrange fields for evp a little to avoid having to call a: too many
482        exchanges and b: exchanges for stress trensor components which we do
483        not have.
484      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
485        of evp, complete rewrite for lsr case (latter is does not yet work
486        in all cases)
487    o pkg/kpp: add code to have mixing in shelf ice caverns
488      - add myThid to all kpp routines (long overdue)
489    
490    checkpoint59
491    o pkg/exf:
492      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
493        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
494      - move exf header files from lower_case.h to UPPER_CASE.h ;
495        add missing cvs Header & Name
496      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
497      - add namelist param. selectStressGridPosition, exf_monFreq
498      - retire many _CLIM routines, and remove data.exf_clim
499        + params moved to data.exf
500        + climsst, climsss now handled by exf_set_gen, i.e.
501          climss?period=0 refers to constant field,
502          climss?period=-12 to monthly forcing
503      - split up namelists in data.exf
504    o pkg/seaice:
505      - remove seaice_exch and seaice_exch_uv
506      - remove superfluous exchange of theta
507      - add myThid to seaice_budget_ocean/ice
508      - add new interface for atmospheric wind forcing (C-grid only)
509        + new routine
510        + two new field (taux, tauy for stress over ice)
511        + removed one global field (DAIRN) for C-grid case only
512    o pkg/thsise
513      - 2nd set of modifs for thsice adjoint in conjunction with exf
514    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
515    
516    checkpoint58y_post
517    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
518      vertical diffusivity, similar to that in MOM4; turned on using
519      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
520      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
521    o Added capability for 3D specification of background vertical diffusion
522      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
523      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
524      "data" file that contains the 3D vertical diffusivity coefficients.
525    o ice dynamics (pkg/seaice) with thsice thermodynamics:
526      - add code within pkg thsice to advect & diffuse sea-ice fields
527      similar to (and will replace) what has been added in  seaice_advdiff.F,
528      but: - conserving Mass, Heat & Salt.
529           - better when using non-linear advection scheme (not yet fully tested)
530           - can also be used in atmospheric set-up (for now, only the diffusion).
531    
532    checkpoint58x_post
533    o IO option for global-file compact format:
534      - add options when generating topology (utils/exch2/matlab-topology-generator)
535      - add I/O capability (pkg/mdsio).
536      - adapt utils/matlab/rdmds.m to read this format.
537      for now long-line format not yet supported by pkg/mdsio (& exch2).
538    o shelfice: add a few diagnostics
539    
540    checkpoint58w_post
541    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
542      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
543      (and replace horiVertRatio in NH code).
544      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
545                         and tutorial_plume_on_slope (sensitive to truncation)
546    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
547      directly to drive seaice model (C-grid only)
548    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
549     - reintroduce computation of wind from stress,
550     - compute tau (in exf_bulkformulae.F) from windstress averaged to
551       mass points to avoid tau = 0
552     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
553    o rdmnc.m: make it work with "global" files created with gluemnc
554    o rdmnc.m : some improvements in dealing with singleton dimension
555      (tested on all testreport mnc output files).
556    o genmake2: disable pkg/profiles if netcdf test fails.
557    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
558    o move call to cal_readparms up to make calendar parameters/variable available
559      to all packages
560    
561    checkpoint58v_post
562    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
563      useDynP_inEos_Zc tested.
564    o pkg/exf: changes to properly interpolate/mask/scale initial fields
565    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
566      and portions thereof.  See read_cs.txt for description and examples.
567    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
568      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
569      following the great-circle arc between those 2 points.
570    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
571      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
572    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
573     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
574     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
575     - still needs work (not working with some options ; efficiency to improve)
576       and serious testing.
577     - use this scheme for temperature & salinity in 2 advection test exp.:
578       advect_xy & advect_xz, respectively.
579    
580    checkpoint58u_post
581    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
582    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
583    o testreport: add option "-skipdir" to skip some test.
584    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
585      momentum calculation.
586    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
587    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
588      remove checkpoint.F and the_correction_step.F (no longer used);
589      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
590    o add option (linFSConserveTr) to correct for tracer source/sink due to
591      Linear Free surface
592    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
593    o pkg/thsice: fix reading mnc-pickups
594    
595    checkpoint58t_post
596    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
597    o pkg/mdsio:
598     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
599       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
600       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
601     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
602     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
603       either MDS_READ_FIELD or MDS_WRITE_FIELD )
604     - new S/R (to replace MDSWRITEMETA), which allows to write more
605       informations (variable names, time ...) to meta files.
606     - modify rdmds.m to give back the meta file content.
607    o pkg/diagnostics: change vertical interpolation to be safer, and more
608       flexible (define p-levels to interpolate to in data.diagnostics);
609      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
610       diagnostic pointer.
611    o pkg/seaice: more cleaning up of seaice_growth, added many comments
612    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
613    o fix multi-category seaice:
614     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
615       SEAICE_MULTICATEGORY
616     - fix short wave heat flux
617    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
618       and allow to use EVP solver. Change forward lab_sea: test both EVP
619       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
620    o Initial check-in of lab_sea adjoint
621      (very similar to natl_box_adjoint/code_seaice)
622      * used C-grid and EVP solver
623      * used KPP, GM/Redi
624      * uses inAdExact=.TRUE.
625      * gradient checks fail for both ADM and TLM
626        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
627        f.d. gradients actually seem more problematic than ADM, TLM gradients;
628        issue is related to forward mismatch between g77 an ifort
629    o pkg/seaice: overhaul of thermodynamics
630     - growth.F and groatb.F are replaced by new routine seaice_growth.F
631     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
632     - move a few global fields out of SEAICE.h into seaice_growth.F and
633       make them 2D (FICE/QNETO/ ...)
634     - remove FO (it is the same as QNETO)
635     - introduce a few local fields to avoid modifying external fields such
636       as atemp, etc.
637    
638    checkpoint58s_post
639    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
640      changed exf_set_gen.F so that
641        genperiod=0 means input file is one time-constant field and
642        genperiod=-12 means input file contains 12 monthly means
643    o CG2D: use pre-computed solver main-diagonal (stored in common block);
644      this affects truncation error ; generate new output file for exp. which
645      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
646        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
647        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
648        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
649        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
650        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
651    o start implementation of deep-atmosphere and anelastic formulation
652    o verification: remove 2nd copy of input files and use script "prepare_run"
653      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
654    o mom_common/vecinv/fluxform: fix a few initialisation isssues
655    o profiles: fix for multithreaded case
656    
657    o diagnostics: rename few diags:
658      s/'PRESSURE'/'RCENTER '/g
659      s/'TICE    '/'oceFreez'/g
660      s/'TAUX    '/'oceTAUX '/g
661      s/'TAUY    '/'oceTAUY '/g
662      s/'SWFLUX  '/'oceQsw  '/g
663      s/DIFx/DFxE/g
664      s/DIFy/DFyE/g
665      and add few ocean-forcing diagnostics:
666      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
667    o modifications to pkg/seaice/growth.F and budget.F, which change results of
668      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
669      as actual snow thickness.  It now refers everywhere to effective snow
670      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
671    
672    checkpoint58r_post
673    o modifications to pkg/seaice/growth.F, which change results of
674      lab_sea experiment: fixes pertain to melting snow over open water, to
675      masking EVAP under sea ice, and to using the correct AREA variable for
676      computations of EVAP, PRECIP, HSNOW, and GHEFF
677    o add ability to read bathy, salt, and theta using MNC (off by def)
678    o add flooding algorithm and advection of HSNOW for pkg/seaice;
679      both are turned off by default and do no change any results
680    o seaice advection with pkg/thsice: a step toward the use of non-linear
681      advection scheme, but #ifdef or commented out for now (requires more EXCH).
682    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
683      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
684      in natl_box (affects results @ truncation level: update output.txt)
685    o multi-threading and IO:
686      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
687      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
688        (needed to work with SingleCpuIO): tested in all verif. exp.
689    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
690      affects the results (but none of the verification test uses this scheme).
691    o Adding some pkg/diagnostics capability to pkg/seaice
692      (will certainly be subject to changes)
693    o ctrl: adding new control variables:
694      lwflux, lwdown, evap, snowprecip, apressure, runoff
695    
696    checkpoint58q_post
697    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
698      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
699      high_res_cube configuration by 4% on Columbia.
700    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
701      add (in global_with_exf/code) a version of EXF_INTERP_READ without
702      dynamical allocation (seems to work in multi-threaded).
703    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
704      single CPU io) so that TAF does not have to see EESUPPORT.h
705    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
706    
707    checkpoint58p_post
708    o obcs: stop if obcs is used with useCDscheme = .true.
709    o shelfice:
710     - fix a sign error so that no slip at shelfice interface works
711     - remove stop for combination non-hydrostatic code and shelfice. That does
712       not mean, that the results are correct, but at least they are numerically
713       stable
714    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
715    o added adjoint exch routined for all exch*3d* routines
716      and updated flow directives
717    
718    checkpoint58o_post
719    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
720      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
721    o change controling S/R for writing pickup file (new S/R do_write_pickup)
722      and clean-up reading/writing of pickup files.
723    o fix local version of read/write pickup (NH part) in rotating_tank/code
724    o simplify EXCH interface:
725     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
726     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
727    o added the regrid package
728    o shelfice:
729     - add a simple boundary layer scheme to reduce noise
730     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
731    
732    checkpoint58n_post
733    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
734       local variable (not in common block).
735    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
736      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
737      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
738        to work with SingleCpuIO.
739    o add "_d 0" to real constant of pkg/cfc subroutines ;
740       update exp. cfc_exemple & tutorial_cfc_offline output files.
741    o multi-threading and IO:
742      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
743        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
744      - barrier before and after reading.
745      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
746      - avoid using MDS_WRITELOCAL for LAND pkg output.
747      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
748        common-block variables ; Allows multi-threading with master-thread IO.
749    o change default MAX_NO_THREADS from 32 to 4 ;
750      and stop cleanly when MAX_NO_THREADS is too small.
751    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
752    
753    checkpoint58m_post
754    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
755       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
756    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
757       keep global_ocean.90x40x15 (for AD testing) with former secondary test
758       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
759    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
760        add MITgcm_tutorials (= code + all the tutorials)
761    o ecco, option to compute cost for total ssh (mean+anom)
762    o consistent with addition of ptracer and ssh in pkg/profiles
763    o profiles: adding ptracer and ssh
764    o testreport: change multi-test output-file name
765      (from output.txt.{name} to output.{name}.txt)
766    o profiles: now ok for mutli-tiles case
767    o seaice: add 4 parameters for different advection schemes for area,
768      (effective) seaice thickness, enthalphy, and snow height. Their default
769      is the standard parameter SEAICEadvScheme
770    o calc_gw:
771     - add cosFacU in zonal viscous flux (harmonic.visc.).
772     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
773       of tutorial_plume_on_slope.
774    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
775    o calc_gw: true flux-form, account for horizontal grid spacing.
776      update rotating_tank results, but not plume_on_slope (affected at
777      truncation level, 11 digits).
778    
779    checkpoint58l_post
780    o calc_gw:
781     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
782     - remove side-drag for now (need to fix it); update plume_on_slope results.
783     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
784    o commit code to make SST/SSS weights spatially variable
785      (based on either variable in-situ or variable initial T/S weights)
786    o pkg/ecco:
787      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
788        now based on horizontally varying weights wthetaLev, wsaltLev
789      * cost_averagesflags now returns year indices in addition to day, month
790      * sflux balance is performed on annual basis
791        (sflxumm, sfluxmm2, bal_sfluxmm)
792      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
793        including separate counting and multipliers
794    o pkg/rbcs
795      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
796    
797    checkpoint58k_post
798    o testreport:
799     - always build in dir. "build" (if not there, mkdir build instead of building
800       & running in input)
801     - run in dir run (if it exists), in build otherwise.
802     - call prepare_run (if input/prepare_run exists)
803     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
804    o pkg/exf modifications to interpolation and rotation routines for more
805       reasonable treatment of North Pole singularity: for tracers North Pole
806       value is set to northernmost zonal-mean value, for zonal velocity it is
807       set to zero, and for meridional velocity it is set to northernmost value.
808    o pkg/exf/exf_check_range.F
809     - add tile index to diagnostics and move stop statement to the very
810       end of the routine.
811    o pkg/diagnostics: (diagnostics_main_init.F)
812      define title of isomorphic variables according to the current config.
813    o pkg/thsice with pkg/seaice dynamics:
814    - fix domain of computation (interior only, required for exf) and do exchanges
815    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
816    o towards a standard way of dealing with multi-threading in MONITOR
817      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
818    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
819       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
820    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
821    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
822    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
823       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
824    o tracer advection:
825     - clean-up and simplify calc_common_factors.F
826     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
827       advection subroutine (but still not used within DST advection S/R)
828    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
829    
830    checkpoint58j_post
831    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
832      from file (collects calls previously in FORWARD_STEP)
833    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
834    o adjoint store dir. adjusted accordingly
835    o genmake2
836      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
837    
838    checkpoint58i_post
839    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
840      on wind stress (SEAICEstressFactor defaults to 1.)
841    o Total number of Timers is finite (<=40): comment out 2 non-essential one
842      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
843    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
844      on CS-grid: no longer loosing mass.
845    o exf & curvilinear-grid: no longer modify longitude xC & xG.
846    o pkg/ggl90: fix sloppy output and fix a bug
847    o pkg/seaice: added SEAICEuseEVPpickup parameter
848      - Set to false in order to start EVP solver with
849        non-EVP pickup files when using SEAICEuseEVP
850      - fix sign error in diffusion in seaice_calc_rhs
851    
852    checkpoint58h_post
853    * Modifications for bottom topography control
854      o replace hFacC by _hFacC at various places
855      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
856      o add non-self-adjoint cg2d_nsa
857      o update autodiff support routines
858      o re-initialise hfac after ctrl_depth_ini
859      o works for 5x5 box, doesnt work for global_ocean.90x40x15
860    * Adding verification for 5x5 box (4-layer) bottom topography control
861    
862    checkpoint58g_post
863    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
864       used for mean seasonal cycle, mean diurnal cycle); add an example
865       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
866    o pkg/ggl90:
867      - add parameter (minimum surface kinetic energy)
868      - fix bug (avoiding division by zero)
869    o couple pkg/thsice to pkg/seaice:
870      - modify advection in seaice to accomodate new scalar fields to be advected
871      - only muliDimAdection scheme work with seaice/thsice
872      - mapping of thsice-variables to seaice-variables, back and forth
873      - does not break the verification experiments, but does not give the
874        desired results either
875    o pkg/seaice
876      - make (default) second order advection a bit less confusing?
877    
878    checkpoint58f_post
879    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
880      to pkg/seaice):
881      - new routines thsice_map_exf and thsice_get_exf provide the interface
882      - add an additional formal parameter to thsice_solve4temp
883    o pkg/exf:
884      - add new fields wspeed, snowprecip (to be able to couple to thsice)
885      - correct Stefan-Boltzmann constant
886      - new parameter for longwave surface emittance
887      - separate some stuff from exf_bulkformulae into new routines  
888        exf_radiation, exf_wind
889      - add new parameters and constants: longwave emissivity for ocean, ice
890        and snow, evaporation parameters over ice
891      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
892        either wind from stress or stress from wind
893    o pkg/thSIce:
894    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
895    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
896       and THSICE_CALC_THICKN
897    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
898    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
899      to make debugging easier.
900    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
901    o pkg/bulk_force:
902      - clean-up comments and parameters ;
903      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
904    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
905      generate new output for test-experiment: aim.5l_cs.thSI
906    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
907      testreport accordingly
908    
909    checkpoint58e_post
910    o SEAICE_CGRID adjoint done
911    o R_STAR adjoint implemented.
912      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
913      * need to sort out init. of h0facc, etc.
914    o Make pkg/profile fully independent of ecco,cost, etc. stuff
915      to be able to use it in pure forward.
916    
917    checkpoint58d_post
918    o upgrade simple test-experiment to tutorial example:
919     step.1: duplicate the experiment and (step.2) will remove the old copy.
920      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
921      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
922      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
923      tutorial_global_oce_biogeo    <- copy of dic_example
924      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
925      tutorial_plume_on_slope       <- copy of plume_on_slope
926      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
927      tutorial_global_oce_optim     <- empty for now (David ?)
928      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
929     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
930    o correct a sign problem in cost_scat.F
931    o obcs and ptracers: fix boundary conditions for advections schemes
932      with larger stencil
933    o thsice adjoint: start
934    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
935      completeness
936    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
937      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
938    o ptracers adjoint:
939      * avoid extensive recomputatations
940      * fix missing re-init. of gptr (missed by TAF)
941    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
942      me to turn off the excessive output to STDOUT that this package produces
943    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
944      and add those terms in Vector-Invariant formulation.
945    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
946      if the control period (xx_hfluxperiod etc) is 0
947    o in profiles pkg, clean routines and fix details
948    o in ecco pkg, reading ssh data:
949      fix problem in case the model does not start at iter0=0
950    o fix mnc-pickup/restart for ptracers
951    o new package prifiles:
952      code to compute profile-based cost by Gael Forget
953      (modifs in ecco, ctrl, autodiff)
954    o Benign bug fix in initialization (spotted by M. Mazloff) of
955      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
956    
957    checkpoint58c_post
958    o adjoint: finish NLFS adjoint and provide reference output in
959      verification/global_ocean.90x40x15/results_ad_nlfs
960    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
961      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
962      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
963      with SEAICE_CGRID defined.
964    o move calendarDumps from "data" to "data.cal" and clean-up the code
965      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
966    o add useEXF & useCAL flags (for now, set in hard-coded way)
967    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
968      (were missing in NH mode, and wrong in quasihydrostatic mode).
969      waiting for Chris updated version of calc_gw to add those CALLs.
970    o fix bug in quasihydrostatic S/R ;
971      add a test for this option: global_ocean.90x40x15.qshyd
972    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
973      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
974    o add on/off flag useOffLine for package OFFLINE
975    o seaice:
976      - modify advection so that it works also on the C-grid
977      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
978        problem in multi-tile runs with C-grid
979      - add flags for clipping ice velocities and/or masking solver forcing
980      - fix drag (ocean on ice) formulation and a bug that caused noise in the
981        C-grid solver
982      - added a few comments to seaice_diffusion.F
983      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
984        are now exclusive)
985      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
986        required re-ordering the code a little:
987       + make DAIRN global variable (defined in SEAICE)
988       + move computation of the viscosities eta and zeta into a new separate
989         routine (because I need to recompute them in seaice_ocean_stress.F)
990    
991  checkpoint58b_post  checkpoint58b_post
992  o AIM+thSIce: fix sign of Short-Wave through the Ice ;  o AIM+thSIce: fix sign of Short-Wave through the Ice ;

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