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revision 1.509 by heimbach, Sat Jul 2 16:13:50 2005 UTC revision 1.926 by jmc, Tue Dec 18 02:01:41 2007 UTC
# Line 4  $Name$ Line 4  $Name$
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    checkpoint59l
8    o pkg/ptracers: new version of ptracers pickup:
9      read meta file and write only fields which are needed to restart.
10      ( same logic as main pickup file ; also using pickupStrictlyMatch )
11    o pkg/seaice:
12      - add timescale for melting due to warm mixed layer as a means of
13        setting SEAICE_availHeatFrac more conveniently
14      - add a CPP-flag/runtime parameter check for flooding algorithm
15      - reformulated availHeat in seaice_growth.F to be independent of AREA
16    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
17      unit changes
18    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
19    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
20      SX vector computer.
21    o pkg/seaice:
22      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
23        seaice forcing fields can now be read only through pkg/exf
24      - removed some unused halos
25    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
26    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
27      or U/VICE from U/VWIND before computing U/VSTRESS
28    
29    checkpoint59k
30    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
31      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
32    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
33      all experiments pass when compile with un-initialised var. checking option.
34    o added pkg/salt_plume
35    o script to test restart (for now, in MITgcm_contrib/jmc_script)
36    o pkg/seaice: new read/write pickup version.
37      read meta file and write only fields which are needed to restart.
38      ( same logic as main pickup file ; also using pickupStrictlyMatch )
39    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
40    o lab_sea.hb87: modify the domain & update output.hb87.txt :
41      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
42      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
43      process. Fixed here by closing the domain at the Northern boundary.
44    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
45    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
46      a set of consecutive levels in/from a 3-D array.
47    o pkg/ptracers:
48      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
49      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
50    
51    checkpoint59j
52    o in pkgs: dic, obcs, offline, rbcs:
53      standard way to compute coeff. for time interpolation between 2 time reccords
54      which retains full precision (& make results less dependent on compiler).
55      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
56    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
57      packages instead of reading ice cover and wind speed separately
58    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
59     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
60      to allow to compile customized code before the update)
61    o cleaning-up:
62      - fix CPP instruction syntax in pkg/obcs
63      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
64        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
65      - fix some threads issue in IO parts.
66    o pkg/dic:
67      - add tons of "_d 0" (--> much better testreports !)
68       and then update outputs of tutorial_global_oce_biogeo
69    o pkg/mom_fluxform:
70      add a special version of momentum advection intended to conserve momentum
71      next to a bathymetry step or a coastline edge. (default = off = #undef)
72    o new read/write pickup version:
73      - for now, only implemented for main (mdsio) pickup file.
74      - write out only what is needed to restart; merge pickup_nh , pickup_ph
75        and main pickup together.
76      - read meta file; read only what is needed to restart; stop if a field
77        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
78        if it make sense (even if the restart is not perfect).
79      - if no meta file, assume that pickup to read corresponds exactly to
80        a pickup that would currently be written.
81      - read pickup written in the old format (until checkpoint59i) if it
82        recognizes an old meta file (no field-list).
83      - add a meta file in exp. which starts from a pickup: 2 cases:
84        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
85         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
86        b) a meta file describing the content of the associated pickup file
87         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
88    o pkg/mdsio & pkg/rw:
89      - new routine to read a meta file ; new set of routine to read
90        Multiple-fields file (with meta file).
91    o added open boundary conditions capability for seaice
92        HSNOW, HSALT, UICE, and VICE
93    
94    checkpoint59i
95    o adjoint:
96      * fix multiDimAdvection adjoint
97        (partial recomputation problem by TAF for fVerT(:,:,kDown)
98        and comlev1 size definition (maxpass vs. max. number of tracers)
99      * verification/global_ocean.90x45x15 adjoint now tests
100        NLFS and multiDimAdvection using DST3 (=30)
101      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
102    o pkg/kpp: add "_d 0" to real constant (if missing);
103      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
104      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
105    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
106      for internal parameters related to restart process (formerly from PARAMS.h)
107      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
108    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
109      as argument. (only atm2d & obcs write_pickup have not yet been updated)
110    o pkg/monitor:
111      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
112      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
113      - account for deep Atmosphere factor and density factor (anelastic)
114    o added open boundary conditions capability for seaice HEFF and AREA
115    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
116      thermodynamics
117      - requires a little reorganization, which affects the testreport results
118        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
119        so that now the conservative form is tested
120      - add a few comments
121    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
122    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
123    o add new diagnostics to seaice: advective, diffusive fluxes (only for
124      multidim-advection, for scheme 2 they are not filled) and transports,
125      thermodynamic growth rates
126    o change units of EmPmR (inside the code, + within coupling interface)
127      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
128      Affects results @ truncation level (cg2d match) and update output of
129       experiments: lab_sea(6), global_ocean.90x40x15(10),
130      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
131      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
132      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
133      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
134    
135    checkpoint59h
136    o pkg/exf:
137      - improve vectorization by moving if-statement out of loops in
138        exf_mapfields, exf_radiation
139      - exf_bulkformulae.F: introduce 2D fields and vectorize code
140    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
141    o testreport:
142      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
143        monitor & update offline_exf_seaice exp. output.
144      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
145    o pkg/seaice:
146      - bug fix in the evp solver: boundary conditions were affected be
147        masking of zMax/zMin (changes results)
148      - minor bug fix in boundary conditions in seaice_calc_strainrates
149        (changes results for no_slip)
150      - seaice_lsr.F: make interpolation of eta dependent on boundaries
151      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
152      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
153        stress formulation and no-slip boundary conditions
154    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
155      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
156    o pkg/seaice: a first HSALT time stepping equation has been checked in
157    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
158      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
159      without requiring DO-IF statements
160    o pkg/thsice:
161      use continuous power-law function for partition of energy between lateral
162      melting/freezing and thinning/thickening ; old code using step function
163      still available with #undef THSICE_FRACEN_POWERLAW
164      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
165    o testreport: change AD testing : check against results/output_adm.txt
166      using same scripts as for forward test.
167    
168    checkpoint59g
169    o adjoint testing: in preparation for changing testreport:
170      - output format: cost and grad written on separated lines
171      - ad output results in directory "results" (instead of "results_ad")
172    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
173    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
174    o pkg/ecco: allow user defined cost function contributions
175    o testreport:
176      Allow to choose (per experiment) the list of tested output variables
177       and the main variable (used to issue a pass/FAIL ) ;
178      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
179      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
180      Also modify printing of summary:
181       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
182       b) echo the list of tested variables in the individual summary.txt of
183          each experiment.
184    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
185      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
186      (but still depend on the tile decompostion of the domain).
187    o pkg/seaice: change a discretization detail to make the B-grid code
188      "more symmetric". This change is likely to remove all "ridges/leads" that
189      where quasi-aligned with the grid in B-grid solutions. It may also be
190      the solution to the stress coupling issues with the B-grid.
191    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
192      remove .cvsignore from input dir. (since testreport no longer run here).
193    o pkg/thsice:
194     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
195     - fix reshaping of sea-ice just after advection:
196       melt all the ice only if ice-volume is too small.
197     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
198       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
199     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
200    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
201      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
202    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
203      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
204      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
205      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
206      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
207      -> update output.txt
208    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
209     this affects truncation error: -> update output.txt of exp:
210      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
211      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
212    
213    checkpoint59f
214    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
215    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
216      a bounded range (in forward mode)
217    o pkg/ecco, ctrl, autodiff and mom_common:
218     internal parameter controls, completements of implementations
219    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
220    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
221      (not seem any difference in testing results).
222    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
223       at face corners.
224    o pkg/generic_advdiff:
225     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
226      loop range indices for computing vertical advection tendency
227      and do the calculation in the interior only (no overlap) ;
228      for now, only implemented for SOM advection (to save CPU time).
229     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
230    o exch2 adjoint
231      First set of changes:
232      - add exch2 hand-written adjoint templates
233      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
234        This will require cleanup in pkg/autodiff/*.F
235        (changed routines currently kept separate in verif. code/)
236      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
237        that used to hide exch2 or cubed-sphere specific code
238        (commented via 'cph-exch2')
239    o pkg/seaice
240      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
241    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
242       output of global_ocean.cs32x15.thsice .
243    
244    checkpoint59e
245    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
246      for B-grid vector (not yet tested) and C-grid vector (<- only used
247      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
248    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
249      (#ifdef ALLOW_SALT_PLUME)
250    o gather_2d/scatter_2d: removed halo regions
251    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
252      scheme and the corresponding test case (under front_relax dir). For now,
253      only available with Skew-flux form and not yet tested in realistic set-up.
254      adjoint: store directives updated, but gradient checks deteriorated,
255      so maybe GM/Redi adjoint is now broken.
256    o seaice adjoint
257      * add AREA, HEFF, HSNOW as control variable
258        (should not change lab_sea results)
259      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
260    o pkg/seaice:
261      * added computation of saltFlux in seaice_growth;
262        For time being, sea ice salinity is assumed constant
263        contribution of snow flooding to freshening of sea ice is neglected.
264        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
265        defaults to 0.0 in order to maintain backward compatibility.
266        Typical values for SEAICE_salinity are 4 to 10 g/kg.
267      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
268      * added SEAICE_availHeatFrac, which specifies fraction of surface level
269        heat content used to melt or grow ice
270      * commented out cap of HICE: it helps keep ice thinner
271      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
272      * applied OBCS T/S mask to HEFFM sea ice mask
273    
274    checkpoint59d
275    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
276     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
277     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
278    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
279     and change default value of parameter "GM_Small_Number";
280     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
281       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
282       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
283    o pkg/ecco: cost function when applying pkg/smooth to controls
284    o pkg/ctrl: add forcingPrecond run time parameter
285    o pkg/seaice:
286     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
287     - fix bug in metric terms of u-equation in LSR solver (implicit part),
288       changes verification/lab_sea
289     - rearrange implicit part of u-equation in LSR solver to make it easier to
290       read, understand, and debug. This causes changes at the truncation level.
291     - fix (serious) bug in the boundary conditions (sign error in the implicit
292       part) of the LSR solver. Changes all LSR results.
293     - fixed problem with HSNOW initialization to avoid thick snow when AREA
294       is initilized with small values - does not change lab_sea results.
295     - added HsnowFile initialization capability
296    o pkg/smooth: addition to model/src and pkg/ctrl so allow
297     initialization of pkg/smooth and application to control vector
298    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
299    o dependencies: pkg/profiles requires pkg/cal
300    o pkg/profiles:
301     - added option ALLOW_PROFILES_GENERICGRID
302         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
303         that interpolation information (grid points and coefficients) is provided
304         within the netcdf input files.
305         -> sample matlab scripts can be found in MITgcm_contrib/gael
306         that allow you to prepare netcdf input files.
307     - also modified: cleaner include statements, cleaner error print statements,
308       cleaner stops when error, and more tests of the netcdf input files consistency.
309    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
310    o pkg/seaice:
311     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
312       requires a new routine: seaice_diagnostics_fill.F
313     - make sure that seaice does not move if not forced (pressure replacement
314       method, Hibler and Ip, 1995), changes results
315     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
316     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
317       It is turned off by default (=-1.), because it changes the results.
318     - make it possible to read AREA from a file, too.
319    
320    checkpoint59c
321    o add S/R and diagnostics for oceanic mixed-layer depth
322    o move GMRedi call after all vertical mixing schemes (including KPP)
323    o pkg/thsice:
324     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
325      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
326    o pkg/obcs:
327     - bug fix for balance code
328    o pkg/seaice:
329      - allow values of SEAICE_elasticParm > 1
330      - add new parameter SEAICE_evpTauRelax as an alternative
331        to SEAICE_elasticParm
332      - make lsr boundary conditions free slip (by default), changes result
333      - add code for no slip boundary conditions for lsr
334      - set minimum of zeta to zero (and not 4e8) (changes results)
335      - add a cap on AREA after advecting AREA if seaice_growth is not called
336    o change calculation of Visbeck K:
337      - no longer depend on tapering scheme; instead, compute slope (limited
338        by GM_maxSlope). this is equivalent to what was comuted before with
339        clipping or linear tappering.
340      - fix vertical averaging (wrong by 1/2 level)
341      - leave the old version (but will not be maintained) within
342        #ifdef OLD_VISBECK_CALC / #endif
343      - update output of exp. ideal_2D_oce
344    o change error catch in calc_r_star to improve vectorization
345    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
346      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
347    o adjoint:
348      Re-organized adjoint checkpointing according to Matt Mazloff
349      (but with modifs/completions/cleanups)
350      Storing is now bundled into large arrays to optimized I/O
351      (and second step in cleanup of the_main_loop)
352    
353    checkpoint59b
354    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
355      - export/import (between ocean & coupler) fields needed for ocean DIC.
356    o pkg/seaice:
357      - get rid of three more exchanges seaice_calc_viscosities (required
358        different loop boundaries in seaice_lsr and seaice_ocean_stress)
359      - bug fix in seaice_ocean_stress (update of lab_sea required)
360      - reduce loop boundaries to necessary minimum also in seaice_evp
361      - go back to the old way of computing deltaC/Z as the adjoint likes that
362        better
363    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
364      passive tracer to an Age Tracer) + update output.txt
365    o pkg/exf:
366      - implement A-grid / C-grid selection for wind-stress input files.
367      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
368      for now, in exf_bulk_largeyeager04.F only :
369      - change implementation for case where windspeed + 2. components wind-stress
370        are read-in. AND use rhoConstFresh to convert evap.
371    o pkg/seaice:
372      - use correct EXCH_UV for wind-forcing (on A-grid).
373      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
374        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
375    o pkg/exf:
376      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
377      EXF_INTERPOLATION:
378      - merge global_with_exf/code version of exf_interp_read.F
379        to the main code ;
380      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
381        reading the file ; Important: This options needs to be defined to recover
382        previous code.
383        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
384      - no longer loose real*8 precision along the way when using exf_iprec=64.
385    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
386      - change discretisation of evp-solver in order to avoid another exchange
387        (changes lab_sea) and clean up a little
388      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
389        help the adjoint (this also changes the results slightly)
390      - add a few "_d 0" where they had been missing in seaice_evp.F
391      - cleaning up: remove unused seaice_calc_rhs.F
392    o pkg/exf: some cleaning-up:
393      - change various "constants" into runtime parameters
394      - cleaned-up Large&Yeager04 routine which should eventually
395        replace exf_bulkformulae.F (changed names of S/R and CPP)
396        and merged various ALLOW_ATM_WIND options
397     only used with thsice pkg (in thsice_get_exf.F):
398      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
399        which are used when useStabilityFct_overIce=TRUE (= the default)
400      - change default values of ice & snow emissivity and scale downward LW
401        by ice & snow emissivity.
402    o pkg/thsice:
403     fix few little problems, in thsice_calc_thickn.F:
404      - growth vertically (and not laterally) if iceFrac == iceMaskMax
405      - melt only laterally if hIce < hThinIce (as the comments say)
406      and in thsice_extend.F:
407      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
408      - start to form ice as soon as the minimum ice-volume is reachable.
409     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
410      and cpl_aim+ocn
411    o pkg/kpp
412     - move computation of surface related input fields to KPP into a new
413       subroutine kpp_forcing_surf.F
414     - remove wrong (within bi,bj loops) EXCH calls.
415     - little cleaning (add argument myThid in last position, cvs header ...)
416     - for now, fix conservation problem by exchanging KPPviscAz (may not
417       be the best fix)
418    o pkg/seaice
419     - check for inconsistent evp parameter/cpp-flag combination
420     - remove leftover errIO flat for obsolete name list error handling
421    o OpenAD
422     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
423    
424    checkpoint59a
425    o pkg/seaice: some parameter clarifications and a little bit of clean up
426    o pkg/thsice: rename run-time parameters:
427       himin       -> hIceMin
428       himin0      -> hThinIce
429       hihig       -> hThickIce
430       i0          -> i0swFrac
431       transCoef   -> bMeltCoef
432       frac_energy -> fracMelting
433      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
434       with default values (for now) that do not change the results.
435      remove old version of thsice vars advection in pkg/seaice.
436    o in FFIELDS.h:
437      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
438      - make pLoad & sIceLoad always available (but still only used if
439         ATMOSPHERIC_LOADING is #define).
440    o pkg/kpp: replaced _KPP_RL with _RL
441    o bug fixes for vertical diffusivity computations when both KPP and
442        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
443        are no longer updating the vertical diffusivity array
444        (passed as argument) but are (re-) setting those arrays.
445    o pkg/seaice: fix bug in evp solver, while doing that
446      - change (improve?) discretization of stress computations for both
447        cgrid-lsr and evp solver
448      - add a new routine to compute strain rates
449      - the above changes lab_sea results
450      - add no slip conditions for evp solver (off by default), lsr-version
451        may follow
452      - fix exchange for shear at Z-points (does not change lab_sea)
453      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
454        (to force the user to pick a time step since there is not "safe" way
455        of choosing it)
456      - add principal stress diagnostics
457      - rearrange fields for evp a little to avoid having to call a: too many
458        exchanges and b: exchanges for stress trensor components which we do
459        not have.
460      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
461        of evp, complete rewrite for lsr case (latter is does not yet work
462        in all cases)
463    o pkg/kpp: add code to have mixing in shelf ice caverns
464      - add myThid to all kpp routines (long overdue)
465    
466    checkpoint59
467    o pkg/exf:
468      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
469        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
470      - move exf header files from lower_case.h to UPPER_CASE.h ;
471        add missing cvs Header & Name
472      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
473      - add namelist param. selectStressGridPosition, exf_monFreq
474      - retire many _CLIM routines, and remove data.exf_clim
475        + params moved to data.exf
476        + climsst, climsss now handled by exf_set_gen, i.e.
477          climss?period=0 refers to constant field,
478          climss?period=-12 to monthly forcing
479      - split up namelists in data.exf
480    o pkg/seaice:
481      - remove seaice_exch and seaice_exch_uv
482      - remove superfluous exchange of theta
483      - add myThid to seaice_budget_ocean/ice
484      - add new interface for atmospheric wind forcing (C-grid only)
485        + new routine
486        + two new field (taux, tauy for stress over ice)
487        + removed one global field (DAIRN) for C-grid case only
488    o pkg/thsise
489      - 2nd set of modifs for thsice adjoint in conjunction with exf
490    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
491    
492    checkpoint58y_post
493    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
494      vertical diffusivity, similar to that in MOM4; turned on using
495      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
496      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
497    o Added capability for 3D specification of background vertical diffusion
498      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
499      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
500      "data" file that contains the 3D vertical diffusivity coefficients.
501    o ice dynamics (pkg/seaice) with thsice thermodynamics:
502      - add code within pkg thsice to advect & diffuse sea-ice fields
503      similar to (and will replace) what has been added in  seaice_advdiff.F,
504      but: - conserving Mass, Heat & Salt.
505           - better when using non-linear advection scheme (not yet fully tested)
506           - can also be used in atmospheric set-up (for now, only the diffusion).
507    
508    checkpoint58x_post
509    o IO option for global-file compact format:
510      - add options when generating topology (utils/exch2/matlab-topology-generator)
511      - add I/O capability (pkg/mdsio).
512      - adapt utils/matlab/rdmds.m to read this format.
513      for now long-line format not yet supported by pkg/mdsio (& exch2).
514    o shelfice: add a few diagnostics
515    
516    checkpoint58w_post
517    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
518      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
519      (and replace horiVertRatio in NH code).
520      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
521                         and tutorial_plume_on_slope (sensitive to truncation)
522    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
523      directly to drive seaice model (C-grid only)
524    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
525     - reintroduce computation of wind from stress,
526     - compute tau (in exf_bulkformulae.F) from windstress averaged to
527       mass points to avoid tau = 0
528     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
529    o rdmnc.m: make it work with "global" files created with gluemnc
530    o rdmnc.m : some improvements in dealing with singleton dimension
531      (tested on all testreport mnc output files).
532    o genmake2: disable pkg/profiles if netcdf test fails.
533    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
534    o move call to cal_readparms up to make calendar parameters/variable available
535      to all packages
536    
537    checkpoint58v_post
538    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
539      useDynP_inEos_Zc tested.
540    o pkg/exf: changes to properly interpolate/mask/scale initial fields
541    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
542      and portions thereof.  See read_cs.txt for description and examples.
543    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
544      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
545      following the great-circle arc between those 2 points.
546    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
547      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
548    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
549     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
550     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
551     - still needs work (not working with some options ; efficiency to improve)
552       and serious testing.
553     - use this scheme for temperature & salinity in 2 advection test exp.:
554       advect_xy & advect_xz, respectively.
555    
556    checkpoint58u_post
557    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
558    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
559    o testreport: add option "-skipdir" to skip some test.
560    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
561      momentum calculation.
562    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
563    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
564      remove checkpoint.F and the_correction_step.F (no longer used);
565      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
566    o add option (linFSConserveTr) to correct for tracer source/sink due to
567      Linear Free surface
568    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
569    o pkg/thsice: fix reading mnc-pickups
570    
571    checkpoint58t_post
572    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
573    o pkg/mdsio:
574     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
575       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
576       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
577     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
578     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
579       either MDS_READ_FIELD or MDS_WRITE_FIELD )
580     - new S/R (to replace MDSWRITEMETA), which allows to write more
581       informations (variable names, time ...) to meta files.
582     - modify rdmds.m to give back the meta file content.
583    o pkg/diagnostics: change vertical interpolation to be safer, and more
584       flexible (define p-levels to interpolate to in data.diagnostics);
585      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
586       diagnostic pointer.
587    o pkg/seaice: more cleaning up of seaice_growth, added many comments
588    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
589    o fix multi-category seaice:
590     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
591       SEAICE_MULTICATEGORY
592     - fix short wave heat flux
593    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
594       and allow to use EVP solver. Change forward lab_sea: test both EVP
595       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
596    o Initial check-in of lab_sea adjoint
597      (very similar to natl_box_adjoint/code_seaice)
598      * used C-grid and EVP solver
599      * used KPP, GM/Redi
600      * uses inAdExact=.TRUE.
601      * gradient checks fail for both ADM and TLM
602        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
603        f.d. gradients actually seem more problematic than ADM, TLM gradients;
604        issue is related to forward mismatch between g77 an ifort
605    o pkg/seaice: overhaul of thermodynamics
606     - growth.F and groatb.F are replaced by new routine seaice_growth.F
607     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
608     - move a few global fields out of SEAICE.h into seaice_growth.F and
609       make them 2D (FICE/QNETO/ ...)
610     - remove FO (it is the same as QNETO)
611     - introduce a few local fields to avoid modifying external fields such
612       as atemp, etc.
613    
614    checkpoint58s_post
615    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
616      changed exf_set_gen.F so that
617        genperiod=0 means input file is one time-constant field and
618        genperiod=-12 means input file contains 12 monthly means
619    o CG2D: use pre-computed solver main-diagonal (stored in common block);
620      this affects truncation error ; generate new output file for exp. which
621      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
622        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
623        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
624        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
625        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
626        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
627    o start implementation of deep-atmosphere and anelastic formulation
628    o verification: remove 2nd copy of input files and use script "prepare_run"
629      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
630    o mom_common/vecinv/fluxform: fix a few initialisation isssues
631    o profiles: fix for multithreaded case
632    
633    o diagnostics: rename few diags:
634      s/'PRESSURE'/'RCENTER '/g
635      s/'TICE    '/'oceFreez'/g
636      s/'TAUX    '/'oceTAUX '/g
637      s/'TAUY    '/'oceTAUY '/g
638      s/'SWFLUX  '/'oceQsw  '/g
639      s/DIFx/DFxE/g
640      s/DIFy/DFyE/g
641      and add few ocean-forcing diagnostics:
642      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
643    o modifications to pkg/seaice/growth.F and budget.F, which change results of
644      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
645      as actual snow thickness.  It now refers everywhere to effective snow
646      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
647    
648    checkpoint58r_post
649    o modifications to pkg/seaice/growth.F, which change results of
650      lab_sea experiment: fixes pertain to melting snow over open water, to
651      masking EVAP under sea ice, and to using the correct AREA variable for
652      computations of EVAP, PRECIP, HSNOW, and GHEFF
653    o add ability to read bathy, salt, and theta using MNC (off by def)
654    o add flooding algorithm and advection of HSNOW for pkg/seaice;
655      both are turned off by default and do no change any results
656    o seaice advection with pkg/thsice: a step toward the use of non-linear
657      advection scheme, but #ifdef or commented out for now (requires more EXCH).
658    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
659      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
660      in natl_box (affects results @ truncation level: update output.txt)
661    o multi-threading and IO:
662      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
663      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
664        (needed to work with SingleCpuIO): tested in all verif. exp.
665    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
666      affects the results (but none of the verification test uses this scheme).
667    o Adding some pkg/diagnostics capability to pkg/seaice
668      (will certainly be subject to changes)
669    o ctrl: adding new control variables:
670      lwflux, lwdown, evap, snowprecip, apressure, runoff
671    
672    checkpoint58q_post
673    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
674      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
675      high_res_cube configuration by 4% on Columbia.
676    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
677      add (in global_with_exf/code) a version of EXF_INTERP_READ without
678      dynamical allocation (seems to work in multi-threaded).
679    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
680      single CPU io) so that TAF does not have to see EESUPPORT.h
681    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
682    
683    checkpoint58p_post
684    o obcs: stop if obcs is used with useCDscheme = .true.
685    o shelfice:
686     - fix a sign error so that no slip at shelfice interface works
687     - remove stop for combination non-hydrostatic code and shelfice. That does
688       not mean, that the results are correct, but at least they are numerically
689       stable
690    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
691    o added adjoint exch routined for all exch*3d* routines
692      and updated flow directives
693    
694    checkpoint58o_post
695    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
696      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
697    o change controling S/R for writing pickup file (new S/R do_write_pickup)
698      and clean-up reading/writing of pickup files.
699    o fix local version of read/write pickup (NH part) in rotating_tank/code
700    o simplify EXCH interface:
701     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
702     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
703    o added the regrid package
704    o shelfice:
705     - add a simple boundary layer scheme to reduce noise
706     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
707    
708    checkpoint58n_post
709    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
710       local variable (not in common block).
711    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
712      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
713      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
714        to work with SingleCpuIO.
715    o add "_d 0" to real constant of pkg/cfc subroutines ;
716       update exp. cfc_exemple & tutorial_cfc_offline output files.
717    o multi-threading and IO:
718      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
719        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
720      - barrier before and after reading.
721      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
722      - avoid using MDS_WRITELOCAL for LAND pkg output.
723      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
724        common-block variables ; Allows multi-threading with master-thread IO.
725    o change default MAX_NO_THREADS from 32 to 4 ;
726      and stop cleanly when MAX_NO_THREADS is too small.
727    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
728    
729    checkpoint58m_post
730    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
731       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
732    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
733       keep global_ocean.90x40x15 (for AD testing) with former secondary test
734       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
735    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
736        add MITgcm_tutorials (= code + all the tutorials)
737    o ecco, option to compute cost for total ssh (mean+anom)
738    o consistent with addition of ptracer and ssh in pkg/profiles
739    o profiles: adding ptracer and ssh
740    o testreport: change multi-test output-file name
741      (from output.txt.{name} to output.{name}.txt)
742    o profiles: now ok for mutli-tiles case
743    o seaice: add 4 parameters for different advection schemes for area,
744      (effective) seaice thickness, enthalphy, and snow height. Their default
745      is the standard parameter SEAICEadvScheme
746    o calc_gw:
747     - add cosFacU in zonal viscous flux (harmonic.visc.).
748     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
749       of tutorial_plume_on_slope.
750    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
751    o calc_gw: true flux-form, account for horizontal grid spacing.
752      update rotating_tank results, but not plume_on_slope (affected at
753      truncation level, 11 digits).
754    
755    checkpoint58l_post
756    o calc_gw:
757     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
758     - remove side-drag for now (need to fix it); update plume_on_slope results.
759     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
760    o commit code to make SST/SSS weights spatially variable
761      (based on either variable in-situ or variable initial T/S weights)
762    o pkg/ecco:
763      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
764        now based on horizontally varying weights wthetaLev, wsaltLev
765      * cost_averagesflags now returns year indices in addition to day, month
766      * sflux balance is performed on annual basis
767        (sflxumm, sfluxmm2, bal_sfluxmm)
768      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
769        including separate counting and multipliers
770    o pkg/rbcs
771      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
772    
773    checkpoint58k_post
774    o testreport:
775     - always build in dir. "build" (if not there, mkdir build instead of building
776       & running in input)
777     - run in dir run (if it exists), in build otherwise.
778     - call prepare_run (if input/prepare_run exists)
779     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
780    o pkg/exf modifications to interpolation and rotation routines for more
781       reasonable treatment of North Pole singularity: for tracers North Pole
782       value is set to northernmost zonal-mean value, for zonal velocity it is
783       set to zero, and for meridional velocity it is set to northernmost value.
784    o pkg/exf/exf_check_range.F
785     - add tile index to diagnostics and move stop statement to the very
786       end of the routine.
787    o pkg/diagnostics: (diagnostics_main_init.F)
788      define title of isomorphic variables according to the current config.
789    o pkg/thsice with pkg/seaice dynamics:
790    - fix domain of computation (interior only, required for exf) and do exchanges
791    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
792    o towards a standard way of dealing with multi-threading in MONITOR
793      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
794    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
795       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
796    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
797    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
798    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
799       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
800    o tracer advection:
801     - clean-up and simplify calc_common_factors.F
802     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
803       advection subroutine (but still not used within DST advection S/R)
804    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
805    
806    checkpoint58j_post
807    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
808      from file (collects calls previously in FORWARD_STEP)
809    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
810    o adjoint store dir. adjusted accordingly
811    o genmake2
812      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
813    
814    checkpoint58i_post
815    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
816      on wind stress (SEAICEstressFactor defaults to 1.)
817    o Total number of Timers is finite (<=40): comment out 2 non-essential one
818      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
819    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
820      on CS-grid: no longer loosing mass.
821    o exf & curvilinear-grid: no longer modify longitude xC & xG.
822    o pkg/ggl90: fix sloppy output and fix a bug
823    o pkg/seaice: added SEAICEuseEVPpickup parameter
824      - Set to false in order to start EVP solver with
825        non-EVP pickup files when using SEAICEuseEVP
826      - fix sign error in diffusion in seaice_calc_rhs
827    
828    checkpoint58h_post
829    * Modifications for bottom topography control
830      o replace hFacC by _hFacC at various places
831      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
832      o add non-self-adjoint cg2d_nsa
833      o update autodiff support routines
834      o re-initialise hfac after ctrl_depth_ini
835      o works for 5x5 box, doesnt work for global_ocean.90x40x15
836    * Adding verification for 5x5 box (4-layer) bottom topography control
837    
838    checkpoint58g_post
839    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
840       used for mean seasonal cycle, mean diurnal cycle); add an example
841       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
842    o pkg/ggl90:
843      - add parameter (minimum surface kinetic energy)
844      - fix bug (avoiding division by zero)
845    o couple pkg/thsice to pkg/seaice:
846      - modify advection in seaice to accomodate new scalar fields to be advected
847      - only muliDimAdection scheme work with seaice/thsice
848      - mapping of thsice-variables to seaice-variables, back and forth
849      - does not break the verification experiments, but does not give the
850        desired results either
851    o pkg/seaice
852      - make (default) second order advection a bit less confusing?
853    
854    checkpoint58f_post
855    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
856      to pkg/seaice):
857      - new routines thsice_map_exf and thsice_get_exf provide the interface
858      - add an additional formal parameter to thsice_solve4temp
859    o pkg/exf:
860      - add new fields wspeed, snowprecip (to be able to couple to thsice)
861      - correct Stefan-Boltzmann constant
862      - new parameter for longwave surface emittance
863      - separate some stuff from exf_bulkformulae into new routines  
864        exf_radiation, exf_wind
865      - add new parameters and constants: longwave emissivity for ocean, ice
866        and snow, evaporation parameters over ice
867      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
868        either wind from stress or stress from wind
869    o pkg/thSIce:
870    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
871    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
872       and THSICE_CALC_THICKN
873    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
874    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
875      to make debugging easier.
876    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
877    o pkg/bulk_force:
878      - clean-up comments and parameters ;
879      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
880    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
881      generate new output for test-experiment: aim.5l_cs.thSI
882    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
883      testreport accordingly
884    
885    checkpoint58e_post
886    o SEAICE_CGRID adjoint done
887    o R_STAR adjoint implemented.
888      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
889      * need to sort out init. of h0facc, etc.
890    o Make pkg/profile fully independent of ecco,cost, etc. stuff
891      to be able to use it in pure forward.
892    
893    checkpoint58d_post
894    o upgrade simple test-experiment to tutorial example:
895     step.1: duplicate the experiment and (step.2) will remove the old copy.
896      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
897      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
898      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
899      tutorial_global_oce_biogeo    <- copy of dic_example
900      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
901      tutorial_plume_on_slope       <- copy of plume_on_slope
902      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
903      tutorial_global_oce_optim     <- empty for now (David ?)
904      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
905     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
906    o correct a sign problem in cost_scat.F
907    o obcs and ptracers: fix boundary conditions for advections schemes
908      with larger stencil
909    o thsice adjoint: start
910    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
911      completeness
912    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
913      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
914    o ptracers adjoint:
915      * avoid extensive recomputatations
916      * fix missing re-init. of gptr (missed by TAF)
917    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
918      me to turn off the excessive output to STDOUT that this package produces
919    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
920      and add those terms in Vector-Invariant formulation.
921    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
922      if the control period (xx_hfluxperiod etc) is 0
923    o in profiles pkg, clean routines and fix details
924    o in ecco pkg, reading ssh data:
925      fix problem in case the model does not start at iter0=0
926    o fix mnc-pickup/restart for ptracers
927    o new package prifiles:
928      code to compute profile-based cost by Gael Forget
929      (modifs in ecco, ctrl, autodiff)
930    o Benign bug fix in initialization (spotted by M. Mazloff) of
931      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
932    
933    checkpoint58c_post
934    o adjoint: finish NLFS adjoint and provide reference output in
935      verification/global_ocean.90x40x15/results_ad_nlfs
936    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
937      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
938      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
939      with SEAICE_CGRID defined.
940    o move calendarDumps from "data" to "data.cal" and clean-up the code
941      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
942    o add useEXF & useCAL flags (for now, set in hard-coded way)
943    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
944      (were missing in NH mode, and wrong in quasihydrostatic mode).
945      waiting for Chris updated version of calc_gw to add those CALLs.
946    o fix bug in quasihydrostatic S/R ;
947      add a test for this option: global_ocean.90x40x15.qshyd
948    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
949      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
950    o add on/off flag useOffLine for package OFFLINE
951    o seaice:
952      - modify advection so that it works also on the C-grid
953      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
954        problem in multi-tile runs with C-grid
955      - add flags for clipping ice velocities and/or masking solver forcing
956      - fix drag (ocean on ice) formulation and a bug that caused noise in the
957        C-grid solver
958      - added a few comments to seaice_diffusion.F
959      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
960        are now exclusive)
961      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
962        required re-ordering the code a little:
963       + make DAIRN global variable (defined in SEAICE)
964       + move computation of the viscosities eta and zeta into a new separate
965         routine (because I need to recompute them in seaice_ocean_stress.F)
966    
967    checkpoint58b_post
968    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
969      update output.txt of exp. aim.5l_cs.thSI
970    o various mnc cleanups and improvements:
971      + shrink lookup tables by factor of ~4
972      + better error reporting when running out of lookup space
973      + able to handle longer path/file names (up to 500 chars)
974    o adjoint:
975      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
976      - TBD: "hidden" mom_vecinv recomp. in dynamics
977    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
978     (allow to differentiate between forcing components using new integer flags:
979      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
980     and add new flag to put Dissipation tendency out of Adams-Bashforth.
981    o ecco
982      - enable trend removal from SSH anomaly obs.
983    o adjoint
984      - a fix for PmEpR when #undef EXACT_CONSERV
985      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
986      - try to fix "hidden" recomp. in forward_step for NLFS
987        (NLFS seems broken sometimes after I checked it in)
988    o seaice:
989     - add c-grid version of the dynamic solver:
990       + three new routines that are the c-grid substitute lsr, dynsolver
991         and ostres
992       + put a few fields that were local to dynsolver into global common
993         blocks, so that I can move the computation of stresses etc into
994         seaice_lsr (saves coding but may break the adjoint).
995     - replace more hardwired parameters by runtime parameters
996     - add ice masks that mask the rhs of the implicit solvers where there
997       is no ice (commented out in seaice_dynsolver, because i am not sure
998       if this works properly), eventually this should replace the clipping
999       of ice velocities in seaice_dynsolver to +/-40cm/s.
1000    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
1001      include it only where its needed
1002    o move balancing of fluxes before the call of external_forcing_surf
1003    o seaice:
1004      - correct units of turning angles (now they are really in degrees)
1005      - move computation of GWATX/Y out of main routine into dynsolver
1006      - initialize GWATX/Y in seaice_init
1007    o Apply mask on Fresh-Water flux (needed for SSH forcing).
1008      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
1009    o seaice: add runtime flags for turning angles (default to zero)
1010    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
1011      and trend from exf forcing and ctrl control adjustments
1012    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
1013      (since checkpoint57x_post)
1014    o change the default rotation period to 86164.s = the Earth rotation
1015    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
1016      and based on a reference stratification. Tested within hs94.cs-32x32x5.
1017    o seaice advection: add code for choosing between the default (2nd order
1018      central differences) and multiDim advection schemes provided by
1019      pkg/generic_advdiff
1020    o seaice:
1021      - removed all references to SEAICE_GRID.h fields from
1022        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
1023        (cubed-sphere configuration will change a little)
1024      - grid computations in seaice_init are obsolete now.
1025      - cleaned up code a little so that is easier to read (hopefully).
1026      - added new (better?) discretizations of default advection and diffusion
1027        (turn on with SEAICEuseFluxForm)
1028      - replace 1 in 3d global fields by kSurface in growth.F
1029      
1030    checkpoint58a_post
1031    o seaice:
1032      - bug fix in advect.F
1033    o shelfice:
1034      - separate shelfice load anomaly from pload (breaks with time
1035        dependent forcing), => introduce constant field shelficeLoadAnomaly.
1036        Its default is 0., but it may be computed more cleverly from (unknown)
1037        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
1038        done offline. A good approximation of the pressure load anomaly is
1039        necessary to avoid large initial adjustment processes underneath
1040        deep-reaching shelfice.
1041      - small fix in ISOMIP shelfice_thermodynamics
1042      - add more sophisticated thermodynamics of Hellmer (1989), this is
1043        now the default
1044      - give a few constants more intuitive names
1045    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
1046      if bulk formulae are used in long integration (especially EmPmR). Turn
1047      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
1048      if balancePrintMean, the imbalance that is substracted is printed to
1049      STDOUT.
1050    o fix bug (typo) in obcs_apply_eta.F
1051    o add a new package shelfice which enables us to model the circulation
1052      underneath shelf-ice with draughts of hundreds of meters.
1053     - works
1054     - to do: + include improved thermodynamics
1055              + check whether kSurfC (from model/inc/SURFACE.h) can be used
1056                instead of new field kTopC
1057              + can we use topoFile, Ro_surf and existing code in ini_depth.F
1058                instead of new field R_shelfIce and new code in ini_depth.F
1059                and ini_mask_etc.F?
1060              + adjust vertical mixing schemes?
1061    o seaice pkg:
1062     - add a cpp-flag to include a simple formula for a salinity dependent
1063       freezing point of sea water at the surface
1064     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
1065       meridional stresses are now different (and hopefully correct)
1066    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
1067       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
1068       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
1069    o pkg/diagnostics: add options and parameters for regional-statistics
1070       diagnostics ; define regions by reading a region-mask from a file
1071       (might add other options later)
1072    o pkg/bulk_force:
1073     - add option and parameters to use AIM surface-flux formulae.
1074     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
1075       others forcing fields (defined in PARM05, parameter file "data") are loaded
1076       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
1077     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
1078     - use the right EXCH call for uwind,vwind (to work on CS-grid).
1079     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
1080       and parameters (note: calcWindStress replaces .NOT.readwindstress).
1081     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
1082    
1083    checkpoint58
1084    o add "--embed-source" option to genmake2 which, when the supporting
1085      tools can be compiled (as determined by genmake2) will turn on the
1086      embed_files package which then embeds the entire MITgcm source code
1087      (*.[fFhc] + Makefile) used for the build within the executable
1088      - requested by CNH but off by default
1089      - adds a paltry <9MB to the mitgcmuv executable in most cases
1090      - only writes the output when useEMBEDSRC in eedata is true
1091    o clean up 3-dim. relaxation codes:
1092      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
1093      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
1094      * Thanks to Tom Haine for testing!
1095    
1096    checkpoint57z_post
1097    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
1098      affects output (@ truncation level) of exp. plume_on_slope ; updated.
1099    o fix the pickup behavior for obcs in combination with ptracers
1100    o fix a bug in ptracers_external_fields_load
1101    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
1102      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
1103    o transfered surface NH pressure to eta field (if exactConserv).
1104    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
1105         and update lab_sea output.txt file.
1106    o completing 3-dim. relaxation code: additional term
1107         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
1108      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
1109      * At compile time, in "EXF_OPTIONS.h" set
1110          #define  ALLOW_CLIMTEMP_RELAXATION
1111          #define  ALLOW_CLIMSALT_RELAXATION
1112      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
1113          tauThetaClimRelax3Dim = 15552000.0,
1114          tauSaltClimRelax3Dim  = 15552000.0,
1115      * 3 cases:
1116          1) Use a constant-in-time 3-dim. field
1117          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
1118          3) Real-time relax. to time-evolving prescribed field
1119    o Adding Laplacian-type smoothness constraint on
1120      initial and boundary (forcing) controls (ic, bc)
1121      * enable at compile-time via
1122        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
1123      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
1124      * Absolute scale somewhat unclear so far
1125      * no area weighting was included since no other cost term does so far
1126    
1127    checkpoint57y_post
1128    First step for a NLFS adjoint
1129    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
1130    o new init. routines for calc_r_star, calc_surf_dr
1131    o still need to deal with ini_masks_etc
1132    o testreport seemed happy
1133    checkpoint57y_pre
1134    
1135    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
1136    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
1137    o add new offset feature to offline pkg (plus minor cleanup)
1138    o cfc fixes for final year of integration
1139    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
1140      be in GCHEM_OPTIONS).
1141    
1142    checkpoint57x_post
1143    o fix testreport Pb in multiple test experiment.
1144    o cleanup our namelist syntax in verification:
1145      - make it more F95 standards compliant (some work still needed)
1146      - allows the vast majority of our tests to work with gfortran
1147    o Non-Hydrostatic:
1148     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
1149     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
1150    o Allow to apply AB on T,S rather than on AB(gT,gS):
1151     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
1152     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
1153       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
1154     - need a "clever" read_pickup to restart from the other AB formulation
1155    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
1156    o remove some unused variables (reduces number of compiler warnings)
1157    o adjoint
1158      * Disable useVariableViscosity for adjoint for time being
1159        (there are a number of extensive recomputations)
1160      * Initialize certain variables needed for adjoint
1161    
1162    checkpoint57w_post
1163    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
1164                 fix the singleCpuIO RS version of MDSWRITEFIELD
1165       and add a WARNING if using globalFiles=T with multi-processors.
1166    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
1167      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
1168    o tracer advection scheme:
1169      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
1170       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
1171       was not very convenient).
1172      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
1173       (further tests needed for the implicit DST & Flux-Limiter schemes).
1174    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
1175      and sRef for convenience, handy, when you want to initialize
1176      ptracers in a large domain with a constant non-zero value. Also,
1177      untangle ptracers_init.F a little.
1178    
1179    checkpoint57v_post
1180    o change dome exp. to use variable viscosity in side-drag terms.
1181    o remove all the files from the cfc_offline test since they are now
1182      incorporated into tutorial_cfc_offline which has been producing
1183      identical results for a few days of testing
1184    o add new parameter: sideDragFactor to enable half-slip-side BC
1185      and change side-drag S/R to use viscosity from mom_calc_visc
1186      (can switch back by setting sideDragFactor=0.); affects results at
1187      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
1188       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
1189    o vorticity & strain are now computed without masking, to account for
1190      no-slip-side BC in variable viscosity calculation ; mask is applied
1191      anyway later on, before computing advection/coriolis terms.
1192    o modify exp4 to test new obcs support for reading from external files
1193      and for passive tracers
1194    o fix behavior of ptracers_monitor when monitor output is written to a
1195      netcdf-file; still not independent of monitor.F (writes in the same
1196      file).
1197    o change default value of tRef (put a uniform, meaningful value for ocean
1198      & atmos) and initialize sRef (was missing, as Martin mentioned).
1199    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
1200      to be proportional to enstrophy dissipation length.  Thus,
1201       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
1202      This is now consistent with Smagorinsky and with the manual.
1203    
1204    checkpoint57u_post
1205    o OBCS and PTRACERS: add open boundary support for passive tracers
1206      - either use homogenous (pseudo) v.Neumann conditions or prescribe
1207        OB-values from file; this is not different from the way theta and salinity
1208        are treated
1209      - however, Orlanski-radiation conditions are not supported, and the model
1210        will stop if you use pTracers and Orlanski at the same time.
1211      - beefed up the rountine obcs_external_fields_load: now only those open
1212        boundary values are overwritten with values from files for which there
1213        are really files, otherwise the OB-fields remain untouched. This makes
1214        it possible to use different OBs at different ends of the domain (as
1215        with EXF)
1216    o reduce number of exch calls in shap_filt (s2).
1217    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
1218      truncation level) 4/5 MLAdjust test results (11&12 digits match).
1219    
1220    checkpoint57t_post
1221    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
1222    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
1223      same truncation, independent of the face number: affects affects several
1224      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
1225    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
1226      note that biharmonic viscosity + no-slip was not tested in any experiment.
1227    o fix bug in non-linear free-surf side-drag ; generate new output for
1228      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
1229    o make mnc honor the writeBinaryPrec flag for most kinds of output
1230    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
1231    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
1232      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
1233    o add brackets in multi-terms sum to get same truncation, independent of
1234      the face number (manage to get exactly same value of gU,gV at the cs-edge)
1235      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
1236    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
1237      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
1238      a maximum grid-scale Reynolds number.  Also, changes all length calculations
1239      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
1240      Suggested values of viscosity parameters found in mom_calc_visc.
1241      Many new viscosity diagnostics available.
1242    
1243    checkpoint57s_post
1244    o Add clearing-house for viscosity calculations, mom_calc_visc and
1245      correct numerous bugs in LeithD and Smagorinsky discretizations.  
1246      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
1247      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
1248      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
1249      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
1250      The Strain-Tension form is now called with useStrainTensonVisc=.true.
1251      ViscAhStrain and viscAhTension are now retired.
1252    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
1253    o In response to JMC's bug report, genmake2 now ignores any soft-links
1254      that it finds in the *current* directory when searching for files.
1255      Soft-links found in any other source directories will still work as
1256      they did before.
1257    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
1258      a C routine to unlimit the stack size
1259    o mnc-ify pkg/aim snapshot vars
1260    o mnc-ify pkg/land as requested by Daniel
1261    o various changes to mnc including:
1262      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
1263      - output can now be grouped so that all files within a group
1264          change the ITER portion of their names in lock-step together
1265      - can now read ("global") PER-FACE (in addition to PER-TILE) files
1266          and works with both EXCH1 and EXCH2 (but needs more testing)
1267      - writing works for all verification test cases w/ g77 on Linux
1268    
1269    checkpoint57r_post
1270    o make MNC variable initialization happen earlier
1271    o add diagnostics for (almost) each term of the momentum Eq.
1272    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
1273    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
1274    o remove MINIMAL_TAVE_OUTPUT option ;
1275      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
1276    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
1277      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
1278    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
1279    o add time-dependent SST, SSS control
1280    o cost terms in ecco/ modularized (new cost_generic.F)
1281    o cost_averages routines are modularized (new cost_averagesgeneric.F)
1282    o new infrastructure for seaice model vs. obs misfits in seaice/
1283      * driver from the_main_loop.F is seaice_cost_driver.F
1284      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
1285      * gradient check in Exp. 6a of natl_box_adjoint/
1286    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
1287      (see README file)
1288    
1289    checkpoint57q_post
1290    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
1291    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
1292      - bug was reported by Jean-Michel and Ian Fenty
1293    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
1294      update exp. cpl_aim+ocn output.
1295    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
1296      Needed for high-res. runs with large global files
1297      to be able to limit tapelev size
1298    o Changed some tests for adjoint:
1299      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
1300      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
1301      * global_ocean.90x40x15/ back to default 3-level checkpointing
1302    o Modifications to enable scripted COMMON to MODULE conversion
1303      * verification/OpenAD/code/ has necessary scripts and description;
1304      * converts, compiles and runs successfully;
1305    
1306    checkpoint57p_post
1307    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
1308    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
1309      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
1310    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
1311    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
1312      (was already the case for dissipation with mom_vecinv,
1313       and also the case for grad.PhiHyd when staggered-timeStep)
1314      This will allow to put dissipation out-off the AB time-stepping.
1315     Unfortunately, affects truncation error. Update output of exp. that "fails"
1316      (cg2d matching number) and leave the others for later: front_relax(10),
1317      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
1318      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
1319    
1320    checkpoint57o_post
1321    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
1322      (2) its ready to be documented during the 20050801 DocFest
1323    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
1324      for ideal_2D_oce and lab_sea on linux_ia32_g77
1325    o set to #undef CTRL_SET_OLD_MAXCVARS_30
1326      in global1x1_tot/code_seaice_adj to access indices 32, 33
1327      (worth another tag)
1328    
1329    checkpoint57n_post
1330    o adding precip control xx_precip 32
1331    o adding swflux control xx_swflux 33
1332    o Replacing 10 forcing penalty cost routines by 1 generic.
1333    o Implementing partitioning in time-mean and variable adjustment
1334      for atmos. state.
1335    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
1336    o in natl_box_adjoint:
1337      * updated exp 1 to 10
1338        (but does not have time-mean vs. variable split results yet)
1339    o updated global1x1/*_seaice_adj/
1340      to incorporate latest changes
1341    o enable useSingleCpuIO for mdsio vector routines
1342      (applies in particular to tapelev I/O)
1343    o removed inefficient K-loop in all active_file*control*.F
1344    
1345    checkpoint57m_post
1346    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
1347      and advect_cs (use EXCH-2 and standard cs-32 grid files).
1348    o pkg/exch2: filling of face-corner halo regions is optional
1349      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
1350    
1351    checkpoint57l_post
1352     tag before updating tutorials (pre-release-2)
1353    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
1354       for output and interpolation of input fields onto model grid)
1355    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
1356       Affects results of exp. rotating_tank ; update output.txt.
1357    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
1358          and taking the square quantity and/or using a fraction-weight field.
1359    o fix aim_diagnostics_init.F mate numbers.
1360    o add mnc output capability to diagnostics/diagstat and update
1361      our cvsignore files for the ACSII output generated
1362    
1363  checkpoint57k_post  checkpoint57k_post
1364  o lab_sea now uses diagnostics package and provides a suite of  o lab_sea now uses diagnostics package and provides a suite of
1365    new EXF diagnostics output.    new EXF diagnostics output.

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