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revision 1.519 by heimbach, Thu Jul 28 14:35:47 2005 UTC revision 1.924 by dimitri, Fri Dec 14 21:52:01 2007 UTC
# Line 4  $Name$ Line 4  $Name$
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7  o adding precip control xx_precip  o pkg/seaice:
8  o moved ptracer ctrl index 17 -> 32    - add timescale for melting due to warm mixed layer as a means of
9        setting SEAICE_availHeatFrac more conveniently
10      - add a CPP-flag/runtime parameter check for flooding algorithm
11      - reformulated availHeat in seaice_growth.F to be independent of AREA
12    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
13      unit changes
14    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
15    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
16      SX vector computer.
17    o pkg/seaice:
18      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
19        seaice forcing fields can now be read only through pkg/exf
20      - removed some unused halos
21    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
22    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
23      or U/VICE from U/VWIND before computing U/VSTRESS
24    
25    checkpoint59k
26    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
27      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
28    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
29      all experiments pass when compile with un-initilised var. checking option.
30    o added pkg/salt_plume
31    o script to test restart (for now, in MITgcm_contrib/jmc_script)
32    o pkg/seaice: new read/write pickup version.
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: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
36    o lab_sea.hb87: modify the domain & update output.hb87.txt :
37      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
38      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
39      process. Fixed here by closing the domain at the Northern boundary.
40    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
41    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
42      a set of consecutive levels in/from a 3-D array.
43    o pkg/ptracers:
44      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
45      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
46    
47    checkpoint59j
48    o in pkgs: dic, obcs, offline, rbcs:
49      standard way to compute coeff. for time interpolation between 2 time reccords
50      which retains full precision (& make results less dependent on compiler).
51      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
52    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
53      packages instead of reading ice cover and wind speed separately
54    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
55     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
56      to allow to compile customized code before the update)
57    o cleaning-up:
58      - fix CPP instruction syntax in pkg/obcs
59      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
60        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
61      - fix some threads issue in IO parts.
62    o pkg/dic:
63      - add tons of "_d 0" (--> much better testreports !)
64       and then update outputs of tutorial_global_oce_biogeo
65    o pkg/mom_fluxform:
66      add a special version of momentum advection intended to conserve momentum
67      next to a bathymetry step or a coastline edge. (default = off = #undef)
68    o new read/write pickup version:
69      - for now, only implemented for main (mdsio) pickup file.
70      - write out only what is needed to restart; merge pickup_nh , pickup_ph
71        and main pickup together.
72      - read meta file; read only what is needed to restart; stop if a field
73        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
74        if it make sense (even if the restart is not perfect).
75      - if no meta file, assume that pickup to read corresponds exactly to
76        a pickup that would currently be written.
77      - read pickup written in the old format (until checkpoint59i) if it
78        recognizes an old meta file (no field-list).
79      - add a meta file in exp. which starts from a pickup: 2 cases:
80        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
81         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
82        b) a meta file describing the content of the associated pickup file
83         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
84    o pkg/mdsio & pkg/rw:
85      - new routine to read a meta file ; new set of routine to read
86        Multiple-fields file (with meta file).
87    o added open boundary conditions capability for seaice
88        HSNOW, HSALT, UICE, and VICE
89    
90    checkpoint59i
91    o adjoint:
92      * fix multiDimAdvection adjoint
93        (partial recomputation problem by TAF for fVerT(:,:,kDown)
94        and comlev1 size definition (maxpass vs. max. number of tracers)
95      * verification/global_ocean.90x45x15 adjoint now tests
96        NLFS and multiDimAdvection using DST3 (=30)
97      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
98    o pkg/kpp: add "_d 0" to real constant (if missing);
99      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
100      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
101    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
102      for internal parameters related to restart process (formerly from PARAMS.h)
103      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
104    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
105      as argument. (only atm2d & obcs write_pickup have not yet been updated)
106    o pkg/monitor:
107      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
108      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
109      - account for deep Atmosphere factor and density factor (anelastic)
110    o added open boundary conditions capability for seaice HEFF and AREA
111    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
112      thermodynamics
113      - requires a little reorganization, which affects the testreport results
114        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
115        so that now the conservative form is tested
116      - add a few comments
117    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
118    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
119    o add new diagnostics to seaice: advective, diffusive fluxes (only for
120      multidim-advection, for scheme 2 they are not filled) and transports,
121      thermodynamic growth rates
122    o change units of EmPmR (inside the code, + within coupling interface)
123      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
124      Affects results @ truncation level (cg2d match) and update output of
125       experiments: lab_sea(6), global_ocean.90x40x15(10),
126      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
127      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
128      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
129      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
130    
131    checkpoint59h
132    o pkg/exf:
133      - improve vectorization by moving if-statement out of loops in
134        exf_mapfields, exf_radiation
135      - exf_bulkformulae.F: introduce 2D fields and vectorize code
136    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
137    o testreport:
138      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
139        monitor & update offline_exf_seaice exp. output.
140      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
141    o pkg/seaice:
142      - bug fix in the evp solver: boundary conditions were affected be
143        masking of zMax/zMin (changes results)
144      - minor bug fix in boundary conditions in seaice_calc_strainrates
145        (changes results for no_slip)
146      - seaice_lsr.F: make interpolation of eta dependent on boundaries
147      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
148      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
149        stress formulation and no-slip boundary conditions
150    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
151      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
152    o pkg/seaice: a first HSALT time stepping equation has been checked in
153    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
154      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
155      without requiring DO-IF statements
156    o pkg/thsice:
157      use continuous power-law function for partition of energy between lateral
158      melting/freezing and thinning/thickening ; old code using step function
159      still available with #undef THSICE_FRACEN_POWERLAW
160      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
161    o testreport: change AD testing : check against results/output_adm.txt
162      using same scripts as for forward test.
163    
164    checkpoint59g
165    o adjoint testing: in preparation for changing testreport:
166      - output format: cost and grad written on separated lines
167      - ad output results in directory "results" (instead of "results_ad")
168    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
169    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
170    o pkg/ecco: allow user defined cost function contributions
171    o testreport:
172      Allow to choose (per experiment) the list of tested output variables
173       and the main variable (used to issue a pass/FAIL ) ;
174      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
175      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
176      Also modify printing of summary:
177       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
178       b) echo the list of tested variables in the individual summary.txt of
179          each experiment.
180    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
181      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
182      (but still depend on the tile decompostion of the domain).
183    o pkg/seaice: change a discretization detail to make the B-grid code
184      "more symmetric". This change is likely to remove all "ridges/leads" that
185      where quasi-aligned with the grid in B-grid solutions. It may also be
186      the solution to the stress coupling issues with the B-grid.
187    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
188      remove .cvsignore from input dir. (since testreport no longer run here).
189    o pkg/thsice:
190     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
191     - fix reshaping of sea-ice just after advection:
192       melt all the ice only if ice-volume is too small.
193     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
194       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
195     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
196    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
197      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
198    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
199      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
200      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
201      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
202      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
203      -> update output.txt
204    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
205     this affects truncation error: -> update output.txt of exp:
206      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
207      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
208    
209    checkpoint59f
210    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
211    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
212      a bounded range (in forward mode)
213    o pkg/ecco, ctrl, autodiff and mom_common:
214     internal parameter controls, completements of implementations
215    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
216    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
217      (not seem any difference in testing results).
218    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
219       at face corners.
220    o pkg/generic_advdiff:
221     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
222      loop range indices for computing vertical advection tendency
223      and do the calculation in the interior only (no overlap) ;
224      for now, only implemented for SOM advection (to save CPU time).
225     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
226    o exch2 adjoint
227      First set of changes:
228      - add exch2 hand-written adjoint templates
229      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
230        This will require cleanup in pkg/autodiff/*.F
231        (changed routines currently kept separate in verif. code/)
232      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
233        that used to hide exch2 or cubed-sphere specific code
234        (commented via 'cph-exch2')
235    o pkg/seaice
236      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
237    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
238       output of global_ocean.cs32x15.thsice .
239    
240    checkpoint59e
241    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
242      for B-grid vector (not yet tested) and C-grid vector (<- only used
243      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
244    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
245      (#ifdef ALLOW_SALT_PLUME)
246    o gather_2d/scatter_2d: removed halo regions
247    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
248      scheme and the corresponding test case (under front_relax dir). For now,
249      only available with Skew-flux form and not yet tested in realistic set-up.
250      adjoint: store directives updated, but gradient checks deteriorated,
251      so maybe GM/Redi adjoint is now broken.
252    o seaice adjoint
253      * add AREA, HEFF, HSNOW as control variable
254        (should not change lab_sea results)
255      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
256    o pkg/seaice:
257      * added computation of saltFlux in seaice_growth;
258        For time being, sea ice salinity is assumed constant
259        contribution of snow flooding to freshening of sea ice is neglected.
260        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
261        defaults to 0.0 in order to maintain backward compatibility.
262        Typical values for SEAICE_salinity are 4 to 10 g/kg.
263      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
264      * added SEAICE_availHeatFrac, which specifies fraction of surface level
265        heat content used to melt or grow ice
266      * commented out cap of HICE: it helps keep ice thinner
267      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
268      * applied OBCS T/S mask to HEFFM sea ice mask
269    
270    checkpoint59d
271    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
272     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
273     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
274    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
275     and change default value of parameter "GM_Small_Number";
276     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
277       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
278       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
279    o pkg/ecco: cost function when applying pkg/smooth to controls
280    o pkg/ctrl: add forcingPrecond run time parameter
281    o pkg/seaice:
282     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
283     - fix bug in metric terms of u-equation in LSR solver (implicit part),
284       changes verification/lab_sea
285     - rearrange implicit part of u-equation in LSR solver to make it easier to
286       read, understand, and debug. This causes changes at the truncation level.
287     - fix (serious) bug in the boundary conditions (sign error in the implicit
288       part) of the LSR solver. Changes all LSR results.
289     - fixed problem with HSNOW initialization to avoid thick snow when AREA
290       is initilized with small values - does not change lab_sea results.
291     - added HsnowFile initialization capability
292    o pkg/smooth: addition to model/src and pkg/ctrl so allow
293     initialization of pkg/smooth and application to control vector
294    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
295    o dependencies: pkg/profiles requires pkg/cal
296    o pkg/profiles:
297     - added option ALLOW_PROFILES_GENERICGRID
298         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
299         that interpolation information (grid points and coefficients) is provided
300         within the netcdf input files.
301         -> sample matlab scripts can be found in MITgcm_contrib/gael
302         that allow you to prepare netcdf input files.
303     - also modified: cleaner include statements, cleaner error print statements,
304       cleaner stops when error, and more tests of the netcdf input files consistency.
305    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
306    o pkg/seaice:
307     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
308       requires a new routine: seaice_diagnostics_fill.F
309     - make sure that seaice does not move if not forced (pressure replacement
310       method, Hibler and Ip, 1995), changes results
311     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
312     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
313       It is turned off by default (=-1.), because it changes the results.
314     - make it possible to read AREA from a file, too.
315    
316    checkpoint59c
317    o add S/R and diagnostics for oceanic mixed-layer depth
318    o move GMRedi call after all vertical mixing schemes (including KPP)
319    o pkg/thsice:
320     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
321      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
322    o pkg/obcs:
323     - bug fix for balance code
324    o pkg/seaice:
325      - allow values of SEAICE_elasticParm > 1
326      - add new parameter SEAICE_evpTauRelax as an alternative
327        to SEAICE_elasticParm
328      - make lsr boundary conditions free slip (by default), changes result
329      - add code for no slip boundary conditions for lsr
330      - set minimum of zeta to zero (and not 4e8) (changes results)
331      - add a cap on AREA after advecting AREA if seaice_growth is not called
332    o change calculation of Visbeck K:
333      - no longer depend on tapering scheme; instead, compute slope (limited
334        by GM_maxSlope). this is equivalent to what was comuted before with
335        clipping or linear tappering.
336      - fix vertical averaging (wrong by 1/2 level)
337      - leave the old version (but will not be maintained) within
338        #ifdef OLD_VISBECK_CALC / #endif
339      - update output of exp. ideal_2D_oce
340    o change error catch in calc_r_star to improve vectorization
341    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
342      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
343    o adjoint:
344      Re-organized adjoint checkpointing according to Matt Mazloff
345      (but with modifs/completions/cleanups)
346      Storing is now bundled into large arrays to optimized I/O
347      (and second step in cleanup of the_main_loop)
348    
349    checkpoint59b
350    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
351      - export/import (between ocean & coupler) fields needed for ocean DIC.
352    o pkg/seaice:
353      - get rid of three more exchanges seaice_calc_viscosities (required
354        different loop boundaries in seaice_lsr and seaice_ocean_stress)
355      - bug fix in seaice_ocean_stress (update of lab_sea required)
356      - reduce loop boundaries to necessary minimum also in seaice_evp
357      - go back to the old way of computing deltaC/Z as the adjoint likes that
358        better
359    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
360      passive tracer to an Age Tracer) + update output.txt
361    o pkg/exf:
362      - implement A-grid / C-grid selection for wind-stress input files.
363      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
364      for now, in exf_bulk_largeyeager04.F only :
365      - change implementation for case where windspeed + 2. components wind-stress
366        are read-in. AND use rhoConstFresh to convert evap.
367    o pkg/seaice:
368      - use correct EXCH_UV for wind-forcing (on A-grid).
369      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
370        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
371    o pkg/exf:
372      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
373      EXF_INTERPOLATION:
374      - merge global_with_exf/code version of exf_interp_read.F
375        to the main code ;
376      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
377        reading the file ; Important: This options needs to be defined to recover
378        previous code.
379        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
380      - no longer loose real*8 precision along the way when using exf_iprec=64.
381    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
382      - change discretisation of evp-solver in order to avoid another exchange
383        (changes lab_sea) and clean up a little
384      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
385        help the adjoint (this also changes the results slightly)
386      - add a few "_d 0" where they had been missing in seaice_evp.F
387      - cleaning up: remove unused seaice_calc_rhs.F
388    o pkg/exf: some cleaning-up:
389      - change various "constants" into runtime parameters
390      - cleaned-up Large&Yeager04 routine which should eventually
391        replace exf_bulkformulae.F (changed names of S/R and CPP)
392        and merged various ALLOW_ATM_WIND options
393     only used with thsice pkg (in thsice_get_exf.F):
394      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
395        which are used when useStabilityFct_overIce=TRUE (= the default)
396      - change default values of ice & snow emissivity and scale downward LW
397        by ice & snow emissivity.
398    o pkg/thsice:
399     fix few little problems, in thsice_calc_thickn.F:
400      - growth vertically (and not laterally) if iceFrac == iceMaskMax
401      - melt only laterally if hIce < hThinIce (as the comments say)
402      and in thsice_extend.F:
403      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
404      - start to form ice as soon as the minimum ice-volume is reachable.
405     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
406      and cpl_aim+ocn
407    o pkg/kpp
408     - move computation of surface related input fields to KPP into a new
409       subroutine kpp_forcing_surf.F
410     - remove wrong (within bi,bj loops) EXCH calls.
411     - little cleaning (add argument myThid in last position, cvs header ...)
412     - for now, fix conservation problem by exchanging KPPviscAz (may not
413       be the best fix)
414    o pkg/seaice
415     - check for inconsistent evp parameter/cpp-flag combination
416     - remove leftover errIO flat for obsolete name list error handling
417    o OpenAD
418     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
419    
420    checkpoint59a
421    o pkg/seaice: some parameter clarifications and a little bit of clean up
422    o pkg/thsice: rename run-time parameters:
423       himin       -> hIceMin
424       himin0      -> hThinIce
425       hihig       -> hThickIce
426       i0          -> i0swFrac
427       transCoef   -> bMeltCoef
428       frac_energy -> fracMelting
429      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
430       with default values (for now) that do not change the results.
431      remove old version of thsice vars advection in pkg/seaice.
432    o in FFIELDS.h:
433      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
434      - make pLoad & sIceLoad always available (but still only used if
435         ATMOSPHERIC_LOADING is #define).
436    o pkg/kpp: replaced _KPP_RL with _RL
437    o bug fixes for vertical diffusivity computations when both KPP and
438        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
439        are no longer updating the vertical diffusivity array
440        (passed as argument) but are (re-) setting those arrays.
441    o pkg/seaice: fix bug in evp solver, while doing that
442      - change (improve?) discretization of stress computations for both
443        cgrid-lsr and evp solver
444      - add a new routine to compute strain rates
445      - the above changes lab_sea results
446      - add no slip conditions for evp solver (off by default), lsr-version
447        may follow
448      - fix exchange for shear at Z-points (does not change lab_sea)
449      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
450        (to force the user to pick a time step since there is not "safe" way
451        of choosing it)
452      - add principal stress diagnostics
453      - rearrange fields for evp a little to avoid having to call a: too many
454        exchanges and b: exchanges for stress trensor components which we do
455        not have.
456      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
457        of evp, complete rewrite for lsr case (latter is does not yet work
458        in all cases)
459    o pkg/kpp: add code to have mixing in shelf ice caverns
460      - add myThid to all kpp routines (long overdue)
461    
462    checkpoint59
463    o pkg/exf:
464      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
465        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
466      - move exf header files from lower_case.h to UPPER_CASE.h ;
467        add missing cvs Header & Name
468      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
469      - add namelist param. selectStressGridPosition, exf_monFreq
470      - retire many _CLIM routines, and remove data.exf_clim
471        + params moved to data.exf
472        + climsst, climsss now handled by exf_set_gen, i.e.
473          climss?period=0 refers to constant field,
474          climss?period=-12 to monthly forcing
475      - split up namelists in data.exf
476    o pkg/seaice:
477      - remove seaice_exch and seaice_exch_uv
478      - remove superfluous exchange of theta
479      - add myThid to seaice_budget_ocean/ice
480      - add new interface for atmospheric wind forcing (C-grid only)
481        + new routine
482        + two new field (taux, tauy for stress over ice)
483        + removed one global field (DAIRN) for C-grid case only
484    o pkg/thsise
485      - 2nd set of modifs for thsice adjoint in conjunction with exf
486    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
487    
488    checkpoint58y_post
489    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
490      vertical diffusivity, similar to that in MOM4; turned on using
491      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
492      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
493    o Added capability for 3D specification of background vertical diffusion
494      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
495      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
496      "data" file that contains the 3D vertical diffusivity coefficients.
497    o ice dynamics (pkg/seaice) with thsice thermodynamics:
498      - add code within pkg thsice to advect & diffuse sea-ice fields
499      similar to (and will replace) what has been added in  seaice_advdiff.F,
500      but: - conserving Mass, Heat & Salt.
501           - better when using non-linear advection scheme (not yet fully tested)
502           - can also be used in atmospheric set-up (for now, only the diffusion).
503    
504    checkpoint58x_post
505    o IO option for global-file compact format:
506      - add options when generating topology (utils/exch2/matlab-topology-generator)
507      - add I/O capability (pkg/mdsio).
508      - adapt utils/matlab/rdmds.m to read this format.
509      for now long-line format not yet supported by pkg/mdsio (& exch2).
510    o shelfice: add a few diagnostics
511    
512    checkpoint58w_post
513    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
514      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
515      (and replace horiVertRatio in NH code).
516      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
517                         and tutorial_plume_on_slope (sensitive to truncation)
518    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
519      directly to drive seaice model (C-grid only)
520    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
521     - reintroduce computation of wind from stress,
522     - compute tau (in exf_bulkformulae.F) from windstress averaged to
523       mass points to avoid tau = 0
524     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
525    o rdmnc.m: make it work with "global" files created with gluemnc
526    o rdmnc.m : some improvements in dealing with singleton dimension
527      (tested on all testreport mnc output files).
528    o genmake2: disable pkg/profiles if netcdf test fails.
529    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
530    o move call to cal_readparms up to make calendar parameters/variable available
531      to all packages
532    
533    checkpoint58v_post
534    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
535      useDynP_inEos_Zc tested.
536    o pkg/exf: changes to properly interpolate/mask/scale initial fields
537    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
538      and portions thereof.  See read_cs.txt for description and examples.
539    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
540      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
541      following the great-circle arc between those 2 points.
542    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
543      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
544    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
545     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
546     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
547     - still needs work (not working with some options ; efficiency to improve)
548       and serious testing.
549     - use this scheme for temperature & salinity in 2 advection test exp.:
550       advect_xy & advect_xz, respectively.
551    
552    checkpoint58u_post
553    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
554    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
555    o testreport: add option "-skipdir" to skip some test.
556    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
557      momentum calculation.
558    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
559    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
560      remove checkpoint.F and the_correction_step.F (no longer used);
561      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
562    o add option (linFSConserveTr) to correct for tracer source/sink due to
563      Linear Free surface
564    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
565    o pkg/thsice: fix reading mnc-pickups
566    
567    checkpoint58t_post
568    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
569    o pkg/mdsio:
570     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
571       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
572       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
573     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
574     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
575       either MDS_READ_FIELD or MDS_WRITE_FIELD )
576     - new S/R (to replace MDSWRITEMETA), which allows to write more
577       informations (variable names, time ...) to meta files.
578     - modify rdmds.m to give back the meta file content.
579    o pkg/diagnostics: change vertical interpolation to be safer, and more
580       flexible (define p-levels to interpolate to in data.diagnostics);
581      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
582       diagnostic pointer.
583    o pkg/seaice: more cleaning up of seaice_growth, added many comments
584    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
585    o fix multi-category seaice:
586     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
587       SEAICE_MULTICATEGORY
588     - fix short wave heat flux
589    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
590       and allow to use EVP solver. Change forward lab_sea: test both EVP
591       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
592    o Initial check-in of lab_sea adjoint
593      (very similar to natl_box_adjoint/code_seaice)
594      * used C-grid and EVP solver
595      * used KPP, GM/Redi
596      * uses inAdExact=.TRUE.
597      * gradient checks fail for both ADM and TLM
598        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
599        f.d. gradients actually seem more problematic than ADM, TLM gradients;
600        issue is related to forward mismatch between g77 an ifort
601    o pkg/seaice: overhaul of thermodynamics
602     - growth.F and groatb.F are replaced by new routine seaice_growth.F
603     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
604     - move a few global fields out of SEAICE.h into seaice_growth.F and
605       make them 2D (FICE/QNETO/ ...)
606     - remove FO (it is the same as QNETO)
607     - introduce a few local fields to avoid modifying external fields such
608       as atemp, etc.
609    
610    checkpoint58s_post
611    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
612      changed exf_set_gen.F so that
613        genperiod=0 means input file is one time-constant field and
614        genperiod=-12 means input file contains 12 monthly means
615    o CG2D: use pre-computed solver main-diagonal (stored in common block);
616      this affects truncation error ; generate new output file for exp. which
617      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
618        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
619        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
620        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
621        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
622        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
623    o start implementation of deep-atmosphere and anelastic formulation
624    o verification: remove 2nd copy of input files and use script "prepare_run"
625      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
626    o mom_common/vecinv/fluxform: fix a few initialisation isssues
627    o profiles: fix for multithreaded case
628    
629    o diagnostics: rename few diags:
630      s/'PRESSURE'/'RCENTER '/g
631      s/'TICE    '/'oceFreez'/g
632      s/'TAUX    '/'oceTAUX '/g
633      s/'TAUY    '/'oceTAUY '/g
634      s/'SWFLUX  '/'oceQsw  '/g
635      s/DIFx/DFxE/g
636      s/DIFy/DFyE/g
637      and add few ocean-forcing diagnostics:
638      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
639    o modifications to pkg/seaice/growth.F and budget.F, which change results of
640      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
641      as actual snow thickness.  It now refers everywhere to effective snow
642      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
643    
644    checkpoint58r_post
645    o modifications to pkg/seaice/growth.F, which change results of
646      lab_sea experiment: fixes pertain to melting snow over open water, to
647      masking EVAP under sea ice, and to using the correct AREA variable for
648      computations of EVAP, PRECIP, HSNOW, and GHEFF
649    o add ability to read bathy, salt, and theta using MNC (off by def)
650    o add flooding algorithm and advection of HSNOW for pkg/seaice;
651      both are turned off by default and do no change any results
652    o seaice advection with pkg/thsice: a step toward the use of non-linear
653      advection scheme, but #ifdef or commented out for now (requires more EXCH).
654    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
655      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
656      in natl_box (affects results @ truncation level: update output.txt)
657    o multi-threading and IO:
658      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
659      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
660        (needed to work with SingleCpuIO): tested in all verif. exp.
661    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
662      affects the results (but none of the verification test uses this scheme).
663    o Adding some pkg/diagnostics capability to pkg/seaice
664      (will certainly be subject to changes)
665    o ctrl: adding new control variables:
666      lwflux, lwdown, evap, snowprecip, apressure, runoff
667    
668    checkpoint58q_post
669    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
670      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
671      high_res_cube configuration by 4% on Columbia.
672    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
673      add (in global_with_exf/code) a version of EXF_INTERP_READ without
674      dynamical allocation (seems to work in multi-threaded).
675    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
676      single CPU io) so that TAF does not have to see EESUPPORT.h
677    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
678    
679    checkpoint58p_post
680    o obcs: stop if obcs is used with useCDscheme = .true.
681    o shelfice:
682     - fix a sign error so that no slip at shelfice interface works
683     - remove stop for combination non-hydrostatic code and shelfice. That does
684       not mean, that the results are correct, but at least they are numerically
685       stable
686    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
687    o added adjoint exch routined for all exch*3d* routines
688      and updated flow directives
689    
690    checkpoint58o_post
691    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
692      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
693    o change controling S/R for writing pickup file (new S/R do_write_pickup)
694      and clean-up reading/writing of pickup files.
695    o fix local version of read/write pickup (NH part) in rotating_tank/code
696    o simplify EXCH interface:
697     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
698     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
699    o added the regrid package
700    o shelfice:
701     - add a simple boundary layer scheme to reduce noise
702     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
703    
704    checkpoint58n_post
705    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
706       local variable (not in common block).
707    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
708      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
709      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
710        to work with SingleCpuIO.
711    o add "_d 0" to real constant of pkg/cfc subroutines ;
712       update exp. cfc_exemple & tutorial_cfc_offline output files.
713    o multi-threading and IO:
714      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
715        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
716      - barrier before and after reading.
717      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
718      - avoid using MDS_WRITELOCAL for LAND pkg output.
719      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
720        common-block variables ; Allows multi-threading with master-thread IO.
721    o change default MAX_NO_THREADS from 32 to 4 ;
722      and stop cleanly when MAX_NO_THREADS is too small.
723    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
724    
725    checkpoint58m_post
726    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
727       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
728    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
729       keep global_ocean.90x40x15 (for AD testing) with former secondary test
730       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
731    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
732        add MITgcm_tutorials (= code + all the tutorials)
733    o ecco, option to compute cost for total ssh (mean+anom)
734    o consistent with addition of ptracer and ssh in pkg/profiles
735    o profiles: adding ptracer and ssh
736    o testreport: change multi-test output-file name
737      (from output.txt.{name} to output.{name}.txt)
738    o profiles: now ok for mutli-tiles case
739    o seaice: add 4 parameters for different advection schemes for area,
740      (effective) seaice thickness, enthalphy, and snow height. Their default
741      is the standard parameter SEAICEadvScheme
742    o calc_gw:
743     - add cosFacU in zonal viscous flux (harmonic.visc.).
744     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
745       of tutorial_plume_on_slope.
746    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
747    o calc_gw: true flux-form, account for horizontal grid spacing.
748      update rotating_tank results, but not plume_on_slope (affected at
749      truncation level, 11 digits).
750    
751    checkpoint58l_post
752    o calc_gw:
753     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
754     - remove side-drag for now (need to fix it); update plume_on_slope results.
755     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
756    o commit code to make SST/SSS weights spatially variable
757      (based on either variable in-situ or variable initial T/S weights)
758    o pkg/ecco:
759      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
760        now based on horizontally varying weights wthetaLev, wsaltLev
761      * cost_averagesflags now returns year indices in addition to day, month
762      * sflux balance is performed on annual basis
763        (sflxumm, sfluxmm2, bal_sfluxmm)
764      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
765        including separate counting and multipliers
766    o pkg/rbcs
767      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
768    
769    checkpoint58k_post
770    o testreport:
771     - always build in dir. "build" (if not there, mkdir build instead of building
772       & running in input)
773     - run in dir run (if it exists), in build otherwise.
774     - call prepare_run (if input/prepare_run exists)
775     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
776    o pkg/exf modifications to interpolation and rotation routines for more
777       reasonable treatment of North Pole singularity: for tracers North Pole
778       value is set to northernmost zonal-mean value, for zonal velocity it is
779       set to zero, and for meridional velocity it is set to northernmost value.
780    o pkg/exf/exf_check_range.F
781     - add tile index to diagnostics and move stop statement to the very
782       end of the routine.
783    o pkg/diagnostics: (diagnostics_main_init.F)
784      define title of isomorphic variables according to the current config.
785    o pkg/thsice with pkg/seaice dynamics:
786    - fix domain of computation (interior only, required for exf) and do exchanges
787    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
788    o towards a standard way of dealing with multi-threading in MONITOR
789      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
790    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
791       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
792    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
793    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
794    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
795       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
796    o tracer advection:
797     - clean-up and simplify calc_common_factors.F
798     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
799       advection subroutine (but still not used within DST advection S/R)
800    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
801    
802    checkpoint58j_post
803    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
804      from file (collects calls previously in FORWARD_STEP)
805    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
806    o adjoint store dir. adjusted accordingly
807    o genmake2
808      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
809    
810    checkpoint58i_post
811    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
812      on wind stress (SEAICEstressFactor defaults to 1.)
813    o Total number of Timers is finite (<=40): comment out 2 non-essential one
814      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
815    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
816      on CS-grid: no longer loosing mass.
817    o exf & curvilinear-grid: no longer modify longitude xC & xG.
818    o pkg/ggl90: fix sloppy output and fix a bug
819    o pkg/seaice: added SEAICEuseEVPpickup parameter
820      - Set to false in order to start EVP solver with
821        non-EVP pickup files when using SEAICEuseEVP
822      - fix sign error in diffusion in seaice_calc_rhs
823    
824    checkpoint58h_post
825    * Modifications for bottom topography control
826      o replace hFacC by _hFacC at various places
827      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
828      o add non-self-adjoint cg2d_nsa
829      o update autodiff support routines
830      o re-initialise hfac after ctrl_depth_ini
831      o works for 5x5 box, doesnt work for global_ocean.90x40x15
832    * Adding verification for 5x5 box (4-layer) bottom topography control
833    
834    checkpoint58g_post
835    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
836       used for mean seasonal cycle, mean diurnal cycle); add an example
837       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
838    o pkg/ggl90:
839      - add parameter (minimum surface kinetic energy)
840      - fix bug (avoiding division by zero)
841    o couple pkg/thsice to pkg/seaice:
842      - modify advection in seaice to accomodate new scalar fields to be advected
843      - only muliDimAdection scheme work with seaice/thsice
844      - mapping of thsice-variables to seaice-variables, back and forth
845      - does not break the verification experiments, but does not give the
846        desired results either
847    o pkg/seaice
848      - make (default) second order advection a bit less confusing?
849    
850    checkpoint58f_post
851    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
852      to pkg/seaice):
853      - new routines thsice_map_exf and thsice_get_exf provide the interface
854      - add an additional formal parameter to thsice_solve4temp
855    o pkg/exf:
856      - add new fields wspeed, snowprecip (to be able to couple to thsice)
857      - correct Stefan-Boltzmann constant
858      - new parameter for longwave surface emittance
859      - separate some stuff from exf_bulkformulae into new routines  
860        exf_radiation, exf_wind
861      - add new parameters and constants: longwave emissivity for ocean, ice
862        and snow, evaporation parameters over ice
863      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
864        either wind from stress or stress from wind
865    o pkg/thSIce:
866    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
867    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
868       and THSICE_CALC_THICKN
869    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
870    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
871      to make debugging easier.
872    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
873    o pkg/bulk_force:
874      - clean-up comments and parameters ;
875      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
876    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
877      generate new output for test-experiment: aim.5l_cs.thSI
878    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
879      testreport accordingly
880    
881    checkpoint58e_post
882    o SEAICE_CGRID adjoint done
883    o R_STAR adjoint implemented.
884      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
885      * need to sort out init. of h0facc, etc.
886    o Make pkg/profile fully independent of ecco,cost, etc. stuff
887      to be able to use it in pure forward.
888    
889    checkpoint58d_post
890    o upgrade simple test-experiment to tutorial example:
891     step.1: duplicate the experiment and (step.2) will remove the old copy.
892      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
893      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
894      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
895      tutorial_global_oce_biogeo    <- copy of dic_example
896      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
897      tutorial_plume_on_slope       <- copy of plume_on_slope
898      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
899      tutorial_global_oce_optim     <- empty for now (David ?)
900      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
901     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
902    o correct a sign problem in cost_scat.F
903    o obcs and ptracers: fix boundary conditions for advections schemes
904      with larger stencil
905    o thsice adjoint: start
906    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
907      completeness
908    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
909      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
910    o ptracers adjoint:
911      * avoid extensive recomputatations
912      * fix missing re-init. of gptr (missed by TAF)
913    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
914      me to turn off the excessive output to STDOUT that this package produces
915    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
916      and add those terms in Vector-Invariant formulation.
917    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
918      if the control period (xx_hfluxperiod etc) is 0
919    o in profiles pkg, clean routines and fix details
920    o in ecco pkg, reading ssh data:
921      fix problem in case the model does not start at iter0=0
922    o fix mnc-pickup/restart for ptracers
923    o new package prifiles:
924      code to compute profile-based cost by Gael Forget
925      (modifs in ecco, ctrl, autodiff)
926    o Benign bug fix in initialization (spotted by M. Mazloff) of
927      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
928    
929    checkpoint58c_post
930    o adjoint: finish NLFS adjoint and provide reference output in
931      verification/global_ocean.90x40x15/results_ad_nlfs
932    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
933      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
934      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
935      with SEAICE_CGRID defined.
936    o move calendarDumps from "data" to "data.cal" and clean-up the code
937      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
938    o add useEXF & useCAL flags (for now, set in hard-coded way)
939    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
940      (were missing in NH mode, and wrong in quasihydrostatic mode).
941      waiting for Chris updated version of calc_gw to add those CALLs.
942    o fix bug in quasihydrostatic S/R ;
943      add a test for this option: global_ocean.90x40x15.qshyd
944    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
945      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
946    o add on/off flag useOffLine for package OFFLINE
947    o seaice:
948      - modify advection so that it works also on the C-grid
949      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
950        problem in multi-tile runs with C-grid
951      - add flags for clipping ice velocities and/or masking solver forcing
952      - fix drag (ocean on ice) formulation and a bug that caused noise in the
953        C-grid solver
954      - added a few comments to seaice_diffusion.F
955      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
956        are now exclusive)
957      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
958        required re-ordering the code a little:
959       + make DAIRN global variable (defined in SEAICE)
960       + move computation of the viscosities eta and zeta into a new separate
961         routine (because I need to recompute them in seaice_ocean_stress.F)
962    
963    checkpoint58b_post
964    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
965      update output.txt of exp. aim.5l_cs.thSI
966    o various mnc cleanups and improvements:
967      + shrink lookup tables by factor of ~4
968      + better error reporting when running out of lookup space
969      + able to handle longer path/file names (up to 500 chars)
970    o adjoint:
971      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
972      - TBD: "hidden" mom_vecinv recomp. in dynamics
973    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
974     (allow to differentiate between forcing components using new integer flags:
975      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
976     and add new flag to put Dissipation tendency out of Adams-Bashforth.
977    o ecco
978      - enable trend removal from SSH anomaly obs.
979    o adjoint
980      - a fix for PmEpR when #undef EXACT_CONSERV
981      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
982      - try to fix "hidden" recomp. in forward_step for NLFS
983        (NLFS seems broken sometimes after I checked it in)
984    o seaice:
985     - add c-grid version of the dynamic solver:
986       + three new routines that are the c-grid substitute lsr, dynsolver
987         and ostres
988       + put a few fields that were local to dynsolver into global common
989         blocks, so that I can move the computation of stresses etc into
990         seaice_lsr (saves coding but may break the adjoint).
991     - replace more hardwired parameters by runtime parameters
992     - add ice masks that mask the rhs of the implicit solvers where there
993       is no ice (commented out in seaice_dynsolver, because i am not sure
994       if this works properly), eventually this should replace the clipping
995       of ice velocities in seaice_dynsolver to +/-40cm/s.
996    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
997      include it only where its needed
998    o move balancing of fluxes before the call of external_forcing_surf
999    o seaice:
1000      - correct units of turning angles (now they are really in degrees)
1001      - move computation of GWATX/Y out of main routine into dynsolver
1002      - initialize GWATX/Y in seaice_init
1003    o Apply mask on Fresh-Water flux (needed for SSH forcing).
1004      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
1005    o seaice: add runtime flags for turning angles (default to zero)
1006    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
1007      and trend from exf forcing and ctrl control adjustments
1008    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
1009      (since checkpoint57x_post)
1010    o change the default rotation period to 86164.s = the Earth rotation
1011    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
1012      and based on a reference stratification. Tested within hs94.cs-32x32x5.
1013    o seaice advection: add code for choosing between the default (2nd order
1014      central differences) and multiDim advection schemes provided by
1015      pkg/generic_advdiff
1016    o seaice:
1017      - removed all references to SEAICE_GRID.h fields from
1018        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
1019        (cubed-sphere configuration will change a little)
1020      - grid computations in seaice_init are obsolete now.
1021      - cleaned up code a little so that is easier to read (hopefully).
1022      - added new (better?) discretizations of default advection and diffusion
1023        (turn on with SEAICEuseFluxForm)
1024      - replace 1 in 3d global fields by kSurface in growth.F
1025      
1026    checkpoint58a_post
1027    o seaice:
1028      - bug fix in advect.F
1029    o shelfice:
1030      - separate shelfice load anomaly from pload (breaks with time
1031        dependent forcing), => introduce constant field shelficeLoadAnomaly.
1032        Its default is 0., but it may be computed more cleverly from (unknown)
1033        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
1034        done offline. A good approximation of the pressure load anomaly is
1035        necessary to avoid large initial adjustment processes underneath
1036        deep-reaching shelfice.
1037      - small fix in ISOMIP shelfice_thermodynamics
1038      - add more sophisticated thermodynamics of Hellmer (1989), this is
1039        now the default
1040      - give a few constants more intuitive names
1041    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
1042      if bulk formulae are used in long integration (especially EmPmR). Turn
1043      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
1044      if balancePrintMean, the imbalance that is substracted is printed to
1045      STDOUT.
1046    o fix bug (typo) in obcs_apply_eta.F
1047    o add a new package shelfice which enables us to model the circulation
1048      underneath shelf-ice with draughts of hundreds of meters.
1049     - works
1050     - to do: + include improved thermodynamics
1051              + check whether kSurfC (from model/inc/SURFACE.h) can be used
1052                instead of new field kTopC
1053              + can we use topoFile, Ro_surf and existing code in ini_depth.F
1054                instead of new field R_shelfIce and new code in ini_depth.F
1055                and ini_mask_etc.F?
1056              + adjust vertical mixing schemes?
1057    o seaice pkg:
1058     - add a cpp-flag to include a simple formula for a salinity dependent
1059       freezing point of sea water at the surface
1060     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
1061       meridional stresses are now different (and hopefully correct)
1062    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
1063       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
1064       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
1065    o pkg/diagnostics: add options and parameters for regional-statistics
1066       diagnostics ; define regions by reading a region-mask from a file
1067       (might add other options later)
1068    o pkg/bulk_force:
1069     - add option and parameters to use AIM surface-flux formulae.
1070     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
1071       others forcing fields (defined in PARM05, parameter file "data") are loaded
1072       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
1073     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
1074     - use the right EXCH call for uwind,vwind (to work on CS-grid).
1075     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
1076       and parameters (note: calcWindStress replaces .NOT.readwindstress).
1077     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
1078    
1079    checkpoint58
1080    o add "--embed-source" option to genmake2 which, when the supporting
1081      tools can be compiled (as determined by genmake2) will turn on the
1082      embed_files package which then embeds the entire MITgcm source code
1083      (*.[fFhc] + Makefile) used for the build within the executable
1084      - requested by CNH but off by default
1085      - adds a paltry <9MB to the mitgcmuv executable in most cases
1086      - only writes the output when useEMBEDSRC in eedata is true
1087    o clean up 3-dim. relaxation codes:
1088      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
1089      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
1090      * Thanks to Tom Haine for testing!
1091    
1092    checkpoint57z_post
1093    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
1094      affects output (@ truncation level) of exp. plume_on_slope ; updated.
1095    o fix the pickup behavior for obcs in combination with ptracers
1096    o fix a bug in ptracers_external_fields_load
1097    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
1098      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
1099    o transfered surface NH pressure to eta field (if exactConserv).
1100    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
1101         and update lab_sea output.txt file.
1102    o completing 3-dim. relaxation code: additional term
1103         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
1104      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
1105      * At compile time, in "EXF_OPTIONS.h" set
1106          #define  ALLOW_CLIMTEMP_RELAXATION
1107          #define  ALLOW_CLIMSALT_RELAXATION
1108      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
1109          tauThetaClimRelax3Dim = 15552000.0,
1110          tauSaltClimRelax3Dim  = 15552000.0,
1111      * 3 cases:
1112          1) Use a constant-in-time 3-dim. field
1113          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
1114          3) Real-time relax. to time-evolving prescribed field
1115    o Adding Laplacian-type smoothness constraint on
1116      initial and boundary (forcing) controls (ic, bc)
1117      * enable at compile-time via
1118        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
1119      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
1120      * Absolute scale somewhat unclear so far
1121      * no area weighting was included since no other cost term does so far
1122    
1123    checkpoint57y_post
1124    First step for a NLFS adjoint
1125    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
1126    o new init. routines for calc_r_star, calc_surf_dr
1127    o still need to deal with ini_masks_etc
1128    o testreport seemed happy
1129    checkpoint57y_pre
1130    
1131    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
1132    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
1133    o add new offset feature to offline pkg (plus minor cleanup)
1134    o cfc fixes for final year of integration
1135    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
1136      be in GCHEM_OPTIONS).
1137    
1138    checkpoint57x_post
1139    o fix testreport Pb in multiple test experiment.
1140    o cleanup our namelist syntax in verification:
1141      - make it more F95 standards compliant (some work still needed)
1142      - allows the vast majority of our tests to work with gfortran
1143    o Non-Hydrostatic:
1144     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
1145     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
1146    o Allow to apply AB on T,S rather than on AB(gT,gS):
1147     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
1148     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
1149       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
1150     - need a "clever" read_pickup to restart from the other AB formulation
1151    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
1152    o remove some unused variables (reduces number of compiler warnings)
1153    o adjoint
1154      * Disable useVariableViscosity for adjoint for time being
1155        (there are a number of extensive recomputations)
1156      * Initialize certain variables needed for adjoint
1157    
1158    checkpoint57w_post
1159    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
1160                 fix the singleCpuIO RS version of MDSWRITEFIELD
1161       and add a WARNING if using globalFiles=T with multi-processors.
1162    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
1163      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
1164    o tracer advection scheme:
1165      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
1166       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
1167       was not very convenient).
1168      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
1169       (further tests needed for the implicit DST & Flux-Limiter schemes).
1170    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
1171      and sRef for convenience, handy, when you want to initialize
1172      ptracers in a large domain with a constant non-zero value. Also,
1173      untangle ptracers_init.F a little.
1174    
1175    checkpoint57v_post
1176    o change dome exp. to use variable viscosity in side-drag terms.
1177    o remove all the files from the cfc_offline test since they are now
1178      incorporated into tutorial_cfc_offline which has been producing
1179      identical results for a few days of testing
1180    o add new parameter: sideDragFactor to enable half-slip-side BC
1181      and change side-drag S/R to use viscosity from mom_calc_visc
1182      (can switch back by setting sideDragFactor=0.); affects results at
1183      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
1184       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
1185    o vorticity & strain are now computed without masking, to account for
1186      no-slip-side BC in variable viscosity calculation ; mask is applied
1187      anyway later on, before computing advection/coriolis terms.
1188    o modify exp4 to test new obcs support for reading from external files
1189      and for passive tracers
1190    o fix behavior of ptracers_monitor when monitor output is written to a
1191      netcdf-file; still not independent of monitor.F (writes in the same
1192      file).
1193    o change default value of tRef (put a uniform, meaningful value for ocean
1194      & atmos) and initialize sRef (was missing, as Martin mentioned).
1195    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
1196      to be proportional to enstrophy dissipation length.  Thus,
1197       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
1198      This is now consistent with Smagorinsky and with the manual.
1199    
1200    checkpoint57u_post
1201    o OBCS and PTRACERS: add open boundary support for passive tracers
1202      - either use homogenous (pseudo) v.Neumann conditions or prescribe
1203        OB-values from file; this is not different from the way theta and salinity
1204        are treated
1205      - however, Orlanski-radiation conditions are not supported, and the model
1206        will stop if you use pTracers and Orlanski at the same time.
1207      - beefed up the rountine obcs_external_fields_load: now only those open
1208        boundary values are overwritten with values from files for which there
1209        are really files, otherwise the OB-fields remain untouched. This makes
1210        it possible to use different OBs at different ends of the domain (as
1211        with EXF)
1212    o reduce number of exch calls in shap_filt (s2).
1213    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
1214      truncation level) 4/5 MLAdjust test results (11&12 digits match).
1215    
1216    checkpoint57t_post
1217    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
1218    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
1219      same truncation, independent of the face number: affects affects several
1220      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
1221    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
1222      note that biharmonic viscosity + no-slip was not tested in any experiment.
1223    o fix bug in non-linear free-surf side-drag ; generate new output for
1224      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
1225    o make mnc honor the writeBinaryPrec flag for most kinds of output
1226    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
1227    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
1228      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
1229    o add brackets in multi-terms sum to get same truncation, independent of
1230      the face number (manage to get exactly same value of gU,gV at the cs-edge)
1231      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
1232    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
1233      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
1234      a maximum grid-scale Reynolds number.  Also, changes all length calculations
1235      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
1236      Suggested values of viscosity parameters found in mom_calc_visc.
1237      Many new viscosity diagnostics available.
1238    
1239    checkpoint57s_post
1240    o Add clearing-house for viscosity calculations, mom_calc_visc and
1241      correct numerous bugs in LeithD and Smagorinsky discretizations.  
1242      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
1243      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
1244      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
1245      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
1246      The Strain-Tension form is now called with useStrainTensonVisc=.true.
1247      ViscAhStrain and viscAhTension are now retired.
1248    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
1249    o In response to JMC's bug report, genmake2 now ignores any soft-links
1250      that it finds in the *current* directory when searching for files.
1251      Soft-links found in any other source directories will still work as
1252      they did before.
1253    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
1254      a C routine to unlimit the stack size
1255    o mnc-ify pkg/aim snapshot vars
1256    o mnc-ify pkg/land as requested by Daniel
1257    o various changes to mnc including:
1258      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
1259      - output can now be grouped so that all files within a group
1260          change the ITER portion of their names in lock-step together
1261      - can now read ("global") PER-FACE (in addition to PER-TILE) files
1262          and works with both EXCH1 and EXCH2 (but needs more testing)
1263      - writing works for all verification test cases w/ g77 on Linux
1264    
1265    checkpoint57r_post
1266    o make MNC variable initialization happen earlier
1267    o add diagnostics for (almost) each term of the momentum Eq.
1268    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
1269    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
1270    o remove MINIMAL_TAVE_OUTPUT option ;
1271      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
1272    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
1273      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
1274    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
1275    o add time-dependent SST, SSS control
1276    o cost terms in ecco/ modularized (new cost_generic.F)
1277    o cost_averages routines are modularized (new cost_averagesgeneric.F)
1278    o new infrastructure for seaice model vs. obs misfits in seaice/
1279      * driver from the_main_loop.F is seaice_cost_driver.F
1280      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
1281      * gradient check in Exp. 6a of natl_box_adjoint/
1282    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
1283      (see README file)
1284    
1285    checkpoint57q_post
1286    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
1287    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
1288      - bug was reported by Jean-Michel and Ian Fenty
1289    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
1290      update exp. cpl_aim+ocn output.
1291    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
1292      Needed for high-res. runs with large global files
1293      to be able to limit tapelev size
1294    o Changed some tests for adjoint:
1295      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
1296      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
1297      * global_ocean.90x40x15/ back to default 3-level checkpointing
1298    o Modifications to enable scripted COMMON to MODULE conversion
1299      * verification/OpenAD/code/ has necessary scripts and description;
1300      * converts, compiles and runs successfully;
1301    
1302    checkpoint57p_post
1303    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
1304    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
1305      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
1306    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
1307    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
1308      (was already the case for dissipation with mom_vecinv,
1309       and also the case for grad.PhiHyd when staggered-timeStep)
1310      This will allow to put dissipation out-off the AB time-stepping.
1311     Unfortunately, affects truncation error. Update output of exp. that "fails"
1312      (cg2d matching number) and leave the others for later: front_relax(10),
1313      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
1314      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
1315    
1316    checkpoint57o_post
1317    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
1318      (2) its ready to be documented during the 20050801 DocFest
1319    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
1320      for ideal_2D_oce and lab_sea on linux_ia32_g77
1321    o set to #undef CTRL_SET_OLD_MAXCVARS_30
1322      in global1x1_tot/code_seaice_adj to access indices 32, 33
1323      (worth another tag)
1324    
1325    checkpoint57n_post
1326    o adding precip control xx_precip 32
1327    o adding swflux control xx_swflux 33
1328    o Replacing 10 forcing penalty cost routines by 1 generic.
1329    o Implementing partitioning in time-mean and variable adjustment
1330      for atmos. state.
1331    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
1332  o in natl_box_adjoint:  o in natl_box_adjoint:
1333    * updated: results_bulk/    * updated exp 1 to 10
1334    * not yet updated: results/, results_seaice/      (but does not have time-mean vs. variable split results yet)
1335    o updated global1x1/*_seaice_adj/
1336      to incorporate latest changes
1337    o enable useSingleCpuIO for mdsio vector routines
1338      (applies in particular to tapelev I/O)
1339    o removed inefficient K-loop in all active_file*control*.F
1340    
1341  checkpoint57m_post  checkpoint57m_post
1342  o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)  o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)

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