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revision 1.519 by heimbach, Thu Jul 28 14:35:47 2005 UTC revision 1.930 by atn, Fri Dec 21 02:54:34 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/kpp: added saltplume diagnostics
8  o moved ptracer ctrl index 17 -> 32  o pkg/obcs and pkg/seaice:
9      - do not set uice and vice to zero when OB*icefile are unspecified
10      - OBCS_SEAICE_AVOID_CONVERGENCE is undefined by default
11      - moved seaice tracer obcs after call to seaice_growth
12    o pkg/salt_plume: added various options for salt plume depth
13      criterion and for vertical distribution of the salt
14    
15    checkpoint59l
16    o pkg/ptracers: new version of ptracers pickup:
17      read meta file and write only fields which are needed to restart.
18      ( same logic as main pickup file ; also using pickupStrictlyMatch )
19    o pkg/seaice:
20      - add timescale for melting due to warm mixed layer as a means of
21        setting SEAICE_availHeatFrac more conveniently
22      - add a CPP-flag/runtime parameter check for flooding algorithm
23      - reformulated availHeat in seaice_growth.F to be independent of AREA
24    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
25      unit changes
26    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
27    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
28      SX vector computer.
29    o pkg/seaice:
30      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
31        seaice forcing fields can now be read only through pkg/exf
32      - removed some unused halos
33    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
34    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
35      or U/VICE from U/VWIND before computing U/VSTRESS
36    
37    checkpoint59k
38    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
39      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
40    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
41      all experiments pass when compile with un-initialised var. checking option.
42    o added pkg/salt_plume
43    o script to test restart (for now, in MITgcm_contrib/jmc_script)
44    o pkg/seaice: new read/write pickup version.
45      read meta file and write only fields which are needed to restart.
46      ( same logic as main pickup file ; also using pickupStrictlyMatch )
47    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
48    o lab_sea.hb87: modify the domain & update output.hb87.txt :
49      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
50      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
51      process. Fixed here by closing the domain at the Northern boundary.
52    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
53    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
54      a set of consecutive levels in/from a 3-D array.
55    o pkg/ptracers:
56      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
57      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
58    
59    checkpoint59j
60    o in pkgs: dic, obcs, offline, rbcs:
61      standard way to compute coeff. for time interpolation between 2 time reccords
62      which retains full precision (& make results less dependent on compiler).
63      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
64    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
65      packages instead of reading ice cover and wind speed separately
66    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
67     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
68      to allow to compile customized code before the update)
69    o cleaning-up:
70      - fix CPP instruction syntax in pkg/obcs
71      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
72        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
73      - fix some threads issue in IO parts.
74    o pkg/dic:
75      - add tons of "_d 0" (--> much better testreports !)
76       and then update outputs of tutorial_global_oce_biogeo
77    o pkg/mom_fluxform:
78      add a special version of momentum advection intended to conserve momentum
79      next to a bathymetry step or a coastline edge. (default = off = #undef)
80    o new read/write pickup version:
81      - for now, only implemented for main (mdsio) pickup file.
82      - write out only what is needed to restart; merge pickup_nh , pickup_ph
83        and main pickup together.
84      - read meta file; read only what is needed to restart; stop if a field
85        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
86        if it make sense (even if the restart is not perfect).
87      - if no meta file, assume that pickup to read corresponds exactly to
88        a pickup that would currently be written.
89      - read pickup written in the old format (until checkpoint59i) if it
90        recognizes an old meta file (no field-list).
91      - add a meta file in exp. which starts from a pickup: 2 cases:
92        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
93         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
94        b) a meta file describing the content of the associated pickup file
95         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
96    o pkg/mdsio & pkg/rw:
97      - new routine to read a meta file ; new set of routine to read
98        Multiple-fields file (with meta file).
99    o added open boundary conditions capability for seaice
100        HSNOW, HSALT, UICE, and VICE
101    
102    checkpoint59i
103    o adjoint:
104      * fix multiDimAdvection adjoint
105        (partial recomputation problem by TAF for fVerT(:,:,kDown)
106        and comlev1 size definition (maxpass vs. max. number of tracers)
107      * verification/global_ocean.90x45x15 adjoint now tests
108        NLFS and multiDimAdvection using DST3 (=30)
109      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
110    o pkg/kpp: add "_d 0" to real constant (if missing);
111      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
112      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
113    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
114      for internal parameters related to restart process (formerly from PARAMS.h)
115      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
116    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
117      as argument. (only atm2d & obcs write_pickup have not yet been updated)
118    o pkg/monitor:
119      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
120      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
121      - account for deep Atmosphere factor and density factor (anelastic)
122    o added open boundary conditions capability for seaice HEFF and AREA
123    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
124      thermodynamics
125      - requires a little reorganization, which affects the testreport results
126        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
127        so that now the conservative form is tested
128      - add a few comments
129    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
130    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
131    o add new diagnostics to seaice: advective, diffusive fluxes (only for
132      multidim-advection, for scheme 2 they are not filled) and transports,
133      thermodynamic growth rates
134    o change units of EmPmR (inside the code, + within coupling interface)
135      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
136      Affects results @ truncation level (cg2d match) and update output of
137       experiments: lab_sea(6), global_ocean.90x40x15(10),
138      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
139      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
140      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
141      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
142    
143    checkpoint59h
144    o pkg/exf:
145      - improve vectorization by moving if-statement out of loops in
146        exf_mapfields, exf_radiation
147      - exf_bulkformulae.F: introduce 2D fields and vectorize code
148    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
149    o testreport:
150      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
151        monitor & update offline_exf_seaice exp. output.
152      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
153    o pkg/seaice:
154      - bug fix in the evp solver: boundary conditions were affected be
155        masking of zMax/zMin (changes results)
156      - minor bug fix in boundary conditions in seaice_calc_strainrates
157        (changes results for no_slip)
158      - seaice_lsr.F: make interpolation of eta dependent on boundaries
159      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
160      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
161        stress formulation and no-slip boundary conditions
162    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
163      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
164    o pkg/seaice: a first HSALT time stepping equation has been checked in
165    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
166      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
167      without requiring DO-IF statements
168    o pkg/thsice:
169      use continuous power-law function for partition of energy between lateral
170      melting/freezing and thinning/thickening ; old code using step function
171      still available with #undef THSICE_FRACEN_POWERLAW
172      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
173    o testreport: change AD testing : check against results/output_adm.txt
174      using same scripts as for forward test.
175    
176    checkpoint59g
177    o adjoint testing: in preparation for changing testreport:
178      - output format: cost and grad written on separated lines
179      - ad output results in directory "results" (instead of "results_ad")
180    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
181    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
182    o pkg/ecco: allow user defined cost function contributions
183    o testreport:
184      Allow to choose (per experiment) the list of tested output variables
185       and the main variable (used to issue a pass/FAIL ) ;
186      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
187      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
188      Also modify printing of summary:
189       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
190       b) echo the list of tested variables in the individual summary.txt of
191          each experiment.
192    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
193      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
194      (but still depend on the tile decompostion of the domain).
195    o pkg/seaice: change a discretization detail to make the B-grid code
196      "more symmetric". This change is likely to remove all "ridges/leads" that
197      where quasi-aligned with the grid in B-grid solutions. It may also be
198      the solution to the stress coupling issues with the B-grid.
199    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
200      remove .cvsignore from input dir. (since testreport no longer run here).
201    o pkg/thsice:
202     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
203     - fix reshaping of sea-ice just after advection:
204       melt all the ice only if ice-volume is too small.
205     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
206       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
207     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
208    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
209      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
210    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
211      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
212      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
213      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
214      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
215      -> update output.txt
216    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
217     this affects truncation error: -> update output.txt of exp:
218      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
219      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
220    
221    checkpoint59f
222    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
223    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
224      a bounded range (in forward mode)
225    o pkg/ecco, ctrl, autodiff and mom_common:
226     internal parameter controls, completements of implementations
227    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
228    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
229      (not seem any difference in testing results).
230    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
231       at face corners.
232    o pkg/generic_advdiff:
233     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
234      loop range indices for computing vertical advection tendency
235      and do the calculation in the interior only (no overlap) ;
236      for now, only implemented for SOM advection (to save CPU time).
237     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
238    o exch2 adjoint
239      First set of changes:
240      - add exch2 hand-written adjoint templates
241      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
242        This will require cleanup in pkg/autodiff/*.F
243        (changed routines currently kept separate in verif. code/)
244      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
245        that used to hide exch2 or cubed-sphere specific code
246        (commented via 'cph-exch2')
247    o pkg/seaice
248      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
249    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
250       output of global_ocean.cs32x15.thsice .
251    
252    checkpoint59e
253    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
254      for B-grid vector (not yet tested) and C-grid vector (<- only used
255      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
256    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
257      (#ifdef ALLOW_SALT_PLUME)
258    o gather_2d/scatter_2d: removed halo regions
259    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
260      scheme and the corresponding test case (under front_relax dir). For now,
261      only available with Skew-flux form and not yet tested in realistic set-up.
262      adjoint: store directives updated, but gradient checks deteriorated,
263      so maybe GM/Redi adjoint is now broken.
264    o seaice adjoint
265      * add AREA, HEFF, HSNOW as control variable
266        (should not change lab_sea results)
267      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
268    o pkg/seaice:
269      * added computation of saltFlux in seaice_growth;
270        For time being, sea ice salinity is assumed constant
271        contribution of snow flooding to freshening of sea ice is neglected.
272        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
273        defaults to 0.0 in order to maintain backward compatibility.
274        Typical values for SEAICE_salinity are 4 to 10 g/kg.
275      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
276      * added SEAICE_availHeatFrac, which specifies fraction of surface level
277        heat content used to melt or grow ice
278      * commented out cap of HICE: it helps keep ice thinner
279      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
280      * applied OBCS T/S mask to HEFFM sea ice mask
281    
282    checkpoint59d
283    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
284     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
285     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
286    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
287     and change default value of parameter "GM_Small_Number";
288     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
289       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
290       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
291    o pkg/ecco: cost function when applying pkg/smooth to controls
292    o pkg/ctrl: add forcingPrecond run time parameter
293    o pkg/seaice:
294     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
295     - fix bug in metric terms of u-equation in LSR solver (implicit part),
296       changes verification/lab_sea
297     - rearrange implicit part of u-equation in LSR solver to make it easier to
298       read, understand, and debug. This causes changes at the truncation level.
299     - fix (serious) bug in the boundary conditions (sign error in the implicit
300       part) of the LSR solver. Changes all LSR results.
301     - fixed problem with HSNOW initialization to avoid thick snow when AREA
302       is initilized with small values - does not change lab_sea results.
303     - added HsnowFile initialization capability
304    o pkg/smooth: addition to model/src and pkg/ctrl so allow
305     initialization of pkg/smooth and application to control vector
306    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
307    o dependencies: pkg/profiles requires pkg/cal
308    o pkg/profiles:
309     - added option ALLOW_PROFILES_GENERICGRID
310         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
311         that interpolation information (grid points and coefficients) is provided
312         within the netcdf input files.
313         -> sample matlab scripts can be found in MITgcm_contrib/gael
314         that allow you to prepare netcdf input files.
315     - also modified: cleaner include statements, cleaner error print statements,
316       cleaner stops when error, and more tests of the netcdf input files consistency.
317    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
318    o pkg/seaice:
319     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
320       requires a new routine: seaice_diagnostics_fill.F
321     - make sure that seaice does not move if not forced (pressure replacement
322       method, Hibler and Ip, 1995), changes results
323     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
324     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
325       It is turned off by default (=-1.), because it changes the results.
326     - make it possible to read AREA from a file, too.
327    
328    checkpoint59c
329    o add S/R and diagnostics for oceanic mixed-layer depth
330    o move GMRedi call after all vertical mixing schemes (including KPP)
331    o pkg/thsice:
332     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
333      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
334    o pkg/obcs:
335     - bug fix for balance code
336    o pkg/seaice:
337      - allow values of SEAICE_elasticParm > 1
338      - add new parameter SEAICE_evpTauRelax as an alternative
339        to SEAICE_elasticParm
340      - make lsr boundary conditions free slip (by default), changes result
341      - add code for no slip boundary conditions for lsr
342      - set minimum of zeta to zero (and not 4e8) (changes results)
343      - add a cap on AREA after advecting AREA if seaice_growth is not called
344    o change calculation of Visbeck K:
345      - no longer depend on tapering scheme; instead, compute slope (limited
346        by GM_maxSlope). this is equivalent to what was comuted before with
347        clipping or linear tappering.
348      - fix vertical averaging (wrong by 1/2 level)
349      - leave the old version (but will not be maintained) within
350        #ifdef OLD_VISBECK_CALC / #endif
351      - update output of exp. ideal_2D_oce
352    o change error catch in calc_r_star to improve vectorization
353    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
354      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
355    o adjoint:
356      Re-organized adjoint checkpointing according to Matt Mazloff
357      (but with modifs/completions/cleanups)
358      Storing is now bundled into large arrays to optimized I/O
359      (and second step in cleanup of the_main_loop)
360    
361    checkpoint59b
362    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
363      - export/import (between ocean & coupler) fields needed for ocean DIC.
364    o pkg/seaice:
365      - get rid of three more exchanges seaice_calc_viscosities (required
366        different loop boundaries in seaice_lsr and seaice_ocean_stress)
367      - bug fix in seaice_ocean_stress (update of lab_sea required)
368      - reduce loop boundaries to necessary minimum also in seaice_evp
369      - go back to the old way of computing deltaC/Z as the adjoint likes that
370        better
371    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
372      passive tracer to an Age Tracer) + update output.txt
373    o pkg/exf:
374      - implement A-grid / C-grid selection for wind-stress input files.
375      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
376      for now, in exf_bulk_largeyeager04.F only :
377      - change implementation for case where windspeed + 2. components wind-stress
378        are read-in. AND use rhoConstFresh to convert evap.
379    o pkg/seaice:
380      - use correct EXCH_UV for wind-forcing (on A-grid).
381      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
382        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
383    o pkg/exf:
384      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
385      EXF_INTERPOLATION:
386      - merge global_with_exf/code version of exf_interp_read.F
387        to the main code ;
388      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
389        reading the file ; Important: This options needs to be defined to recover
390        previous code.
391        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
392      - no longer loose real*8 precision along the way when using exf_iprec=64.
393    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
394      - change discretisation of evp-solver in order to avoid another exchange
395        (changes lab_sea) and clean up a little
396      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
397        help the adjoint (this also changes the results slightly)
398      - add a few "_d 0" where they had been missing in seaice_evp.F
399      - cleaning up: remove unused seaice_calc_rhs.F
400    o pkg/exf: some cleaning-up:
401      - change various "constants" into runtime parameters
402      - cleaned-up Large&Yeager04 routine which should eventually
403        replace exf_bulkformulae.F (changed names of S/R and CPP)
404        and merged various ALLOW_ATM_WIND options
405     only used with thsice pkg (in thsice_get_exf.F):
406      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
407        which are used when useStabilityFct_overIce=TRUE (= the default)
408      - change default values of ice & snow emissivity and scale downward LW
409        by ice & snow emissivity.
410    o pkg/thsice:
411     fix few little problems, in thsice_calc_thickn.F:
412      - growth vertically (and not laterally) if iceFrac == iceMaskMax
413      - melt only laterally if hIce < hThinIce (as the comments say)
414      and in thsice_extend.F:
415      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
416      - start to form ice as soon as the minimum ice-volume is reachable.
417     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
418      and cpl_aim+ocn
419    o pkg/kpp
420     - move computation of surface related input fields to KPP into a new
421       subroutine kpp_forcing_surf.F
422     - remove wrong (within bi,bj loops) EXCH calls.
423     - little cleaning (add argument myThid in last position, cvs header ...)
424     - for now, fix conservation problem by exchanging KPPviscAz (may not
425       be the best fix)
426    o pkg/seaice
427     - check for inconsistent evp parameter/cpp-flag combination
428     - remove leftover errIO flat for obsolete name list error handling
429    o OpenAD
430     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
431    
432    checkpoint59a
433    o pkg/seaice: some parameter clarifications and a little bit of clean up
434    o pkg/thsice: rename run-time parameters:
435       himin       -> hIceMin
436       himin0      -> hThinIce
437       hihig       -> hThickIce
438       i0          -> i0swFrac
439       transCoef   -> bMeltCoef
440       frac_energy -> fracMelting
441      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
442       with default values (for now) that do not change the results.
443      remove old version of thsice vars advection in pkg/seaice.
444    o in FFIELDS.h:
445      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
446      - make pLoad & sIceLoad always available (but still only used if
447         ATMOSPHERIC_LOADING is #define).
448    o pkg/kpp: replaced _KPP_RL with _RL
449    o bug fixes for vertical diffusivity computations when both KPP and
450        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
451        are no longer updating the vertical diffusivity array
452        (passed as argument) but are (re-) setting those arrays.
453    o pkg/seaice: fix bug in evp solver, while doing that
454      - change (improve?) discretization of stress computations for both
455        cgrid-lsr and evp solver
456      - add a new routine to compute strain rates
457      - the above changes lab_sea results
458      - add no slip conditions for evp solver (off by default), lsr-version
459        may follow
460      - fix exchange for shear at Z-points (does not change lab_sea)
461      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
462        (to force the user to pick a time step since there is not "safe" way
463        of choosing it)
464      - add principal stress diagnostics
465      - rearrange fields for evp a little to avoid having to call a: too many
466        exchanges and b: exchanges for stress trensor components which we do
467        not have.
468      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
469        of evp, complete rewrite for lsr case (latter is does not yet work
470        in all cases)
471    o pkg/kpp: add code to have mixing in shelf ice caverns
472      - add myThid to all kpp routines (long overdue)
473    
474    checkpoint59
475    o pkg/exf:
476      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
477        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
478      - move exf header files from lower_case.h to UPPER_CASE.h ;
479        add missing cvs Header & Name
480      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
481      - add namelist param. selectStressGridPosition, exf_monFreq
482      - retire many _CLIM routines, and remove data.exf_clim
483        + params moved to data.exf
484        + climsst, climsss now handled by exf_set_gen, i.e.
485          climss?period=0 refers to constant field,
486          climss?period=-12 to monthly forcing
487      - split up namelists in data.exf
488    o pkg/seaice:
489      - remove seaice_exch and seaice_exch_uv
490      - remove superfluous exchange of theta
491      - add myThid to seaice_budget_ocean/ice
492      - add new interface for atmospheric wind forcing (C-grid only)
493        + new routine
494        + two new field (taux, tauy for stress over ice)
495        + removed one global field (DAIRN) for C-grid case only
496    o pkg/thsise
497      - 2nd set of modifs for thsice adjoint in conjunction with exf
498    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
499    
500    checkpoint58y_post
501    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
502      vertical diffusivity, similar to that in MOM4; turned on using
503      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
504      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
505    o Added capability for 3D specification of background vertical diffusion
506      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
507      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
508      "data" file that contains the 3D vertical diffusivity coefficients.
509    o ice dynamics (pkg/seaice) with thsice thermodynamics:
510      - add code within pkg thsice to advect & diffuse sea-ice fields
511      similar to (and will replace) what has been added in  seaice_advdiff.F,
512      but: - conserving Mass, Heat & Salt.
513           - better when using non-linear advection scheme (not yet fully tested)
514           - can also be used in atmospheric set-up (for now, only the diffusion).
515    
516    checkpoint58x_post
517    o IO option for global-file compact format:
518      - add options when generating topology (utils/exch2/matlab-topology-generator)
519      - add I/O capability (pkg/mdsio).
520      - adapt utils/matlab/rdmds.m to read this format.
521      for now long-line format not yet supported by pkg/mdsio (& exch2).
522    o shelfice: add a few diagnostics
523    
524    checkpoint58w_post
525    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
526      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
527      (and replace horiVertRatio in NH code).
528      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
529                         and tutorial_plume_on_slope (sensitive to truncation)
530    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
531      directly to drive seaice model (C-grid only)
532    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
533     - reintroduce computation of wind from stress,
534     - compute tau (in exf_bulkformulae.F) from windstress averaged to
535       mass points to avoid tau = 0
536     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
537    o rdmnc.m: make it work with "global" files created with gluemnc
538    o rdmnc.m : some improvements in dealing with singleton dimension
539      (tested on all testreport mnc output files).
540    o genmake2: disable pkg/profiles if netcdf test fails.
541    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
542    o move call to cal_readparms up to make calendar parameters/variable available
543      to all packages
544    
545    checkpoint58v_post
546    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
547      useDynP_inEos_Zc tested.
548    o pkg/exf: changes to properly interpolate/mask/scale initial fields
549    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
550      and portions thereof.  See read_cs.txt for description and examples.
551    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
552      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
553      following the great-circle arc between those 2 points.
554    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
555      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
556    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
557     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
558     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
559     - still needs work (not working with some options ; efficiency to improve)
560       and serious testing.
561     - use this scheme for temperature & salinity in 2 advection test exp.:
562       advect_xy & advect_xz, respectively.
563    
564    checkpoint58u_post
565    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
566    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
567    o testreport: add option "-skipdir" to skip some test.
568    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
569      momentum calculation.
570    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
571    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
572      remove checkpoint.F and the_correction_step.F (no longer used);
573      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
574    o add option (linFSConserveTr) to correct for tracer source/sink due to
575      Linear Free surface
576    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
577    o pkg/thsice: fix reading mnc-pickups
578    
579    checkpoint58t_post
580    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
581    o pkg/mdsio:
582     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
583       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
584       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
585     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
586     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
587       either MDS_READ_FIELD or MDS_WRITE_FIELD )
588     - new S/R (to replace MDSWRITEMETA), which allows to write more
589       informations (variable names, time ...) to meta files.
590     - modify rdmds.m to give back the meta file content.
591    o pkg/diagnostics: change vertical interpolation to be safer, and more
592       flexible (define p-levels to interpolate to in data.diagnostics);
593      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
594       diagnostic pointer.
595    o pkg/seaice: more cleaning up of seaice_growth, added many comments
596    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
597    o fix multi-category seaice:
598     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
599       SEAICE_MULTICATEGORY
600     - fix short wave heat flux
601    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
602       and allow to use EVP solver. Change forward lab_sea: test both EVP
603       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
604    o Initial check-in of lab_sea adjoint
605      (very similar to natl_box_adjoint/code_seaice)
606      * used C-grid and EVP solver
607      * used KPP, GM/Redi
608      * uses inAdExact=.TRUE.
609      * gradient checks fail for both ADM and TLM
610        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
611        f.d. gradients actually seem more problematic than ADM, TLM gradients;
612        issue is related to forward mismatch between g77 an ifort
613    o pkg/seaice: overhaul of thermodynamics
614     - growth.F and groatb.F are replaced by new routine seaice_growth.F
615     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
616     - move a few global fields out of SEAICE.h into seaice_growth.F and
617       make them 2D (FICE/QNETO/ ...)
618     - remove FO (it is the same as QNETO)
619     - introduce a few local fields to avoid modifying external fields such
620       as atemp, etc.
621    
622    checkpoint58s_post
623    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
624      changed exf_set_gen.F so that
625        genperiod=0 means input file is one time-constant field and
626        genperiod=-12 means input file contains 12 monthly means
627    o CG2D: use pre-computed solver main-diagonal (stored in common block);
628      this affects truncation error ; generate new output file for exp. which
629      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
630        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
631        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
632        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
633        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
634        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
635    o start implementation of deep-atmosphere and anelastic formulation
636    o verification: remove 2nd copy of input files and use script "prepare_run"
637      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
638    o mom_common/vecinv/fluxform: fix a few initialisation isssues
639    o profiles: fix for multithreaded case
640    
641    o diagnostics: rename few diags:
642      s/'PRESSURE'/'RCENTER '/g
643      s/'TICE    '/'oceFreez'/g
644      s/'TAUX    '/'oceTAUX '/g
645      s/'TAUY    '/'oceTAUY '/g
646      s/'SWFLUX  '/'oceQsw  '/g
647      s/DIFx/DFxE/g
648      s/DIFy/DFyE/g
649      and add few ocean-forcing diagnostics:
650      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
651    o modifications to pkg/seaice/growth.F and budget.F, which change results of
652      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
653      as actual snow thickness.  It now refers everywhere to effective snow
654      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
655    
656    checkpoint58r_post
657    o modifications to pkg/seaice/growth.F, which change results of
658      lab_sea experiment: fixes pertain to melting snow over open water, to
659      masking EVAP under sea ice, and to using the correct AREA variable for
660      computations of EVAP, PRECIP, HSNOW, and GHEFF
661    o add ability to read bathy, salt, and theta using MNC (off by def)
662    o add flooding algorithm and advection of HSNOW for pkg/seaice;
663      both are turned off by default and do no change any results
664    o seaice advection with pkg/thsice: a step toward the use of non-linear
665      advection scheme, but #ifdef or commented out for now (requires more EXCH).
666    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
667      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
668      in natl_box (affects results @ truncation level: update output.txt)
669    o multi-threading and IO:
670      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
671      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
672        (needed to work with SingleCpuIO): tested in all verif. exp.
673    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
674      affects the results (but none of the verification test uses this scheme).
675    o Adding some pkg/diagnostics capability to pkg/seaice
676      (will certainly be subject to changes)
677    o ctrl: adding new control variables:
678      lwflux, lwdown, evap, snowprecip, apressure, runoff
679    
680    checkpoint58q_post
681    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
682      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
683      high_res_cube configuration by 4% on Columbia.
684    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
685      add (in global_with_exf/code) a version of EXF_INTERP_READ without
686      dynamical allocation (seems to work in multi-threaded).
687    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
688      single CPU io) so that TAF does not have to see EESUPPORT.h
689    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
690    
691    checkpoint58p_post
692    o obcs: stop if obcs is used with useCDscheme = .true.
693    o shelfice:
694     - fix a sign error so that no slip at shelfice interface works
695     - remove stop for combination non-hydrostatic code and shelfice. That does
696       not mean, that the results are correct, but at least they are numerically
697       stable
698    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
699    o added adjoint exch routined for all exch*3d* routines
700      and updated flow directives
701    
702    checkpoint58o_post
703    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
704      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
705    o change controling S/R for writing pickup file (new S/R do_write_pickup)
706      and clean-up reading/writing of pickup files.
707    o fix local version of read/write pickup (NH part) in rotating_tank/code
708    o simplify EXCH interface:
709     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
710     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
711    o added the regrid package
712    o shelfice:
713     - add a simple boundary layer scheme to reduce noise
714     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
715    
716    checkpoint58n_post
717    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
718       local variable (not in common block).
719    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
720      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
721      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
722        to work with SingleCpuIO.
723    o add "_d 0" to real constant of pkg/cfc subroutines ;
724       update exp. cfc_exemple & tutorial_cfc_offline output files.
725    o multi-threading and IO:
726      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
727        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
728      - barrier before and after reading.
729      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
730      - avoid using MDS_WRITELOCAL for LAND pkg output.
731      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
732        common-block variables ; Allows multi-threading with master-thread IO.
733    o change default MAX_NO_THREADS from 32 to 4 ;
734      and stop cleanly when MAX_NO_THREADS is too small.
735    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
736    
737    checkpoint58m_post
738    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
739       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
740    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
741       keep global_ocean.90x40x15 (for AD testing) with former secondary test
742       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
743    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
744        add MITgcm_tutorials (= code + all the tutorials)
745    o ecco, option to compute cost for total ssh (mean+anom)
746    o consistent with addition of ptracer and ssh in pkg/profiles
747    o profiles: adding ptracer and ssh
748    o testreport: change multi-test output-file name
749      (from output.txt.{name} to output.{name}.txt)
750    o profiles: now ok for mutli-tiles case
751    o seaice: add 4 parameters for different advection schemes for area,
752      (effective) seaice thickness, enthalphy, and snow height. Their default
753      is the standard parameter SEAICEadvScheme
754    o calc_gw:
755     - add cosFacU in zonal viscous flux (harmonic.visc.).
756     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
757       of tutorial_plume_on_slope.
758    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
759    o calc_gw: true flux-form, account for horizontal grid spacing.
760      update rotating_tank results, but not plume_on_slope (affected at
761      truncation level, 11 digits).
762    
763    checkpoint58l_post
764    o calc_gw:
765     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
766     - remove side-drag for now (need to fix it); update plume_on_slope results.
767     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
768    o commit code to make SST/SSS weights spatially variable
769      (based on either variable in-situ or variable initial T/S weights)
770    o pkg/ecco:
771      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
772        now based on horizontally varying weights wthetaLev, wsaltLev
773      * cost_averagesflags now returns year indices in addition to day, month
774      * sflux balance is performed on annual basis
775        (sflxumm, sfluxmm2, bal_sfluxmm)
776      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
777        including separate counting and multipliers
778    o pkg/rbcs
779      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
780    
781    checkpoint58k_post
782    o testreport:
783     - always build in dir. "build" (if not there, mkdir build instead of building
784       & running in input)
785     - run in dir run (if it exists), in build otherwise.
786     - call prepare_run (if input/prepare_run exists)
787     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
788    o pkg/exf modifications to interpolation and rotation routines for more
789       reasonable treatment of North Pole singularity: for tracers North Pole
790       value is set to northernmost zonal-mean value, for zonal velocity it is
791       set to zero, and for meridional velocity it is set to northernmost value.
792    o pkg/exf/exf_check_range.F
793     - add tile index to diagnostics and move stop statement to the very
794       end of the routine.
795    o pkg/diagnostics: (diagnostics_main_init.F)
796      define title of isomorphic variables according to the current config.
797    o pkg/thsice with pkg/seaice dynamics:
798    - fix domain of computation (interior only, required for exf) and do exchanges
799    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
800    o towards a standard way of dealing with multi-threading in MONITOR
801      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
802    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
803       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
804    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
805    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
806    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
807       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
808    o tracer advection:
809     - clean-up and simplify calc_common_factors.F
810     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
811       advection subroutine (but still not used within DST advection S/R)
812    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
813    
814    checkpoint58j_post
815    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
816      from file (collects calls previously in FORWARD_STEP)
817    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
818    o adjoint store dir. adjusted accordingly
819    o genmake2
820      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
821    
822    checkpoint58i_post
823    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
824      on wind stress (SEAICEstressFactor defaults to 1.)
825    o Total number of Timers is finite (<=40): comment out 2 non-essential one
826      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
827    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
828      on CS-grid: no longer loosing mass.
829    o exf & curvilinear-grid: no longer modify longitude xC & xG.
830    o pkg/ggl90: fix sloppy output and fix a bug
831    o pkg/seaice: added SEAICEuseEVPpickup parameter
832      - Set to false in order to start EVP solver with
833        non-EVP pickup files when using SEAICEuseEVP
834      - fix sign error in diffusion in seaice_calc_rhs
835    
836    checkpoint58h_post
837    * Modifications for bottom topography control
838      o replace hFacC by _hFacC at various places
839      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
840      o add non-self-adjoint cg2d_nsa
841      o update autodiff support routines
842      o re-initialise hfac after ctrl_depth_ini
843      o works for 5x5 box, doesnt work for global_ocean.90x40x15
844    * Adding verification for 5x5 box (4-layer) bottom topography control
845    
846    checkpoint58g_post
847    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
848       used for mean seasonal cycle, mean diurnal cycle); add an example
849       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
850    o pkg/ggl90:
851      - add parameter (minimum surface kinetic energy)
852      - fix bug (avoiding division by zero)
853    o couple pkg/thsice to pkg/seaice:
854      - modify advection in seaice to accomodate new scalar fields to be advected
855      - only muliDimAdection scheme work with seaice/thsice
856      - mapping of thsice-variables to seaice-variables, back and forth
857      - does not break the verification experiments, but does not give the
858        desired results either
859    o pkg/seaice
860      - make (default) second order advection a bit less confusing?
861    
862    checkpoint58f_post
863    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
864      to pkg/seaice):
865      - new routines thsice_map_exf and thsice_get_exf provide the interface
866      - add an additional formal parameter to thsice_solve4temp
867    o pkg/exf:
868      - add new fields wspeed, snowprecip (to be able to couple to thsice)
869      - correct Stefan-Boltzmann constant
870      - new parameter for longwave surface emittance
871      - separate some stuff from exf_bulkformulae into new routines  
872        exf_radiation, exf_wind
873      - add new parameters and constants: longwave emissivity for ocean, ice
874        and snow, evaporation parameters over ice
875      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
876        either wind from stress or stress from wind
877    o pkg/thSIce:
878    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
879    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
880       and THSICE_CALC_THICKN
881    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
882    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
883      to make debugging easier.
884    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
885    o pkg/bulk_force:
886      - clean-up comments and parameters ;
887      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
888    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
889      generate new output for test-experiment: aim.5l_cs.thSI
890    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
891      testreport accordingly
892    
893    checkpoint58e_post
894    o SEAICE_CGRID adjoint done
895    o R_STAR adjoint implemented.
896      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
897      * need to sort out init. of h0facc, etc.
898    o Make pkg/profile fully independent of ecco,cost, etc. stuff
899      to be able to use it in pure forward.
900    
901    checkpoint58d_post
902    o upgrade simple test-experiment to tutorial example:
903     step.1: duplicate the experiment and (step.2) will remove the old copy.
904      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
905      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
906      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
907      tutorial_global_oce_biogeo    <- copy of dic_example
908      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
909      tutorial_plume_on_slope       <- copy of plume_on_slope
910      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
911      tutorial_global_oce_optim     <- empty for now (David ?)
912      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
913     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
914    o correct a sign problem in cost_scat.F
915    o obcs and ptracers: fix boundary conditions for advections schemes
916      with larger stencil
917    o thsice adjoint: start
918    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
919      completeness
920    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
921      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
922    o ptracers adjoint:
923      * avoid extensive recomputatations
924      * fix missing re-init. of gptr (missed by TAF)
925    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
926      me to turn off the excessive output to STDOUT that this package produces
927    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
928      and add those terms in Vector-Invariant formulation.
929    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
930      if the control period (xx_hfluxperiod etc) is 0
931    o in profiles pkg, clean routines and fix details
932    o in ecco pkg, reading ssh data:
933      fix problem in case the model does not start at iter0=0
934    o fix mnc-pickup/restart for ptracers
935    o new package prifiles:
936      code to compute profile-based cost by Gael Forget
937      (modifs in ecco, ctrl, autodiff)
938    o Benign bug fix in initialization (spotted by M. Mazloff) of
939      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
940    
941    checkpoint58c_post
942    o adjoint: finish NLFS adjoint and provide reference output in
943      verification/global_ocean.90x40x15/results_ad_nlfs
944    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
945      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
946      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
947      with SEAICE_CGRID defined.
948    o move calendarDumps from "data" to "data.cal" and clean-up the code
949      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
950    o add useEXF & useCAL flags (for now, set in hard-coded way)
951    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
952      (were missing in NH mode, and wrong in quasihydrostatic mode).
953      waiting for Chris updated version of calc_gw to add those CALLs.
954    o fix bug in quasihydrostatic S/R ;
955      add a test for this option: global_ocean.90x40x15.qshyd
956    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
957      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
958    o add on/off flag useOffLine for package OFFLINE
959    o seaice:
960      - modify advection so that it works also on the C-grid
961      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
962        problem in multi-tile runs with C-grid
963      - add flags for clipping ice velocities and/or masking solver forcing
964      - fix drag (ocean on ice) formulation and a bug that caused noise in the
965        C-grid solver
966      - added a few comments to seaice_diffusion.F
967      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
968        are now exclusive)
969      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
970        required re-ordering the code a little:
971       + make DAIRN global variable (defined in SEAICE)
972       + move computation of the viscosities eta and zeta into a new separate
973         routine (because I need to recompute them in seaice_ocean_stress.F)
974    
975    checkpoint58b_post
976    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
977      update output.txt of exp. aim.5l_cs.thSI
978    o various mnc cleanups and improvements:
979      + shrink lookup tables by factor of ~4
980      + better error reporting when running out of lookup space
981      + able to handle longer path/file names (up to 500 chars)
982    o adjoint:
983      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
984      - TBD: "hidden" mom_vecinv recomp. in dynamics
985    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
986     (allow to differentiate between forcing components using new integer flags:
987      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
988     and add new flag to put Dissipation tendency out of Adams-Bashforth.
989    o ecco
990      - enable trend removal from SSH anomaly obs.
991    o adjoint
992      - a fix for PmEpR when #undef EXACT_CONSERV
993      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
994      - try to fix "hidden" recomp. in forward_step for NLFS
995        (NLFS seems broken sometimes after I checked it in)
996    o seaice:
997     - add c-grid version of the dynamic solver:
998       + three new routines that are the c-grid substitute lsr, dynsolver
999         and ostres
1000       + put a few fields that were local to dynsolver into global common
1001         blocks, so that I can move the computation of stresses etc into
1002         seaice_lsr (saves coding but may break the adjoint).
1003     - replace more hardwired parameters by runtime parameters
1004     - add ice masks that mask the rhs of the implicit solvers where there
1005       is no ice (commented out in seaice_dynsolver, because i am not sure
1006       if this works properly), eventually this should replace the clipping
1007       of ice velocities in seaice_dynsolver to +/-40cm/s.
1008    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
1009      include it only where its needed
1010    o move balancing of fluxes before the call of external_forcing_surf
1011    o seaice:
1012      - correct units of turning angles (now they are really in degrees)
1013      - move computation of GWATX/Y out of main routine into dynsolver
1014      - initialize GWATX/Y in seaice_init
1015    o Apply mask on Fresh-Water flux (needed for SSH forcing).
1016      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
1017    o seaice: add runtime flags for turning angles (default to zero)
1018    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
1019      and trend from exf forcing and ctrl control adjustments
1020    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
1021      (since checkpoint57x_post)
1022    o change the default rotation period to 86164.s = the Earth rotation
1023    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
1024      and based on a reference stratification. Tested within hs94.cs-32x32x5.
1025    o seaice advection: add code for choosing between the default (2nd order
1026      central differences) and multiDim advection schemes provided by
1027      pkg/generic_advdiff
1028    o seaice:
1029      - removed all references to SEAICE_GRID.h fields from
1030        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
1031        (cubed-sphere configuration will change a little)
1032      - grid computations in seaice_init are obsolete now.
1033      - cleaned up code a little so that is easier to read (hopefully).
1034      - added new (better?) discretizations of default advection and diffusion
1035        (turn on with SEAICEuseFluxForm)
1036      - replace 1 in 3d global fields by kSurface in growth.F
1037      
1038    checkpoint58a_post
1039    o seaice:
1040      - bug fix in advect.F
1041    o shelfice:
1042      - separate shelfice load anomaly from pload (breaks with time
1043        dependent forcing), => introduce constant field shelficeLoadAnomaly.
1044        Its default is 0., but it may be computed more cleverly from (unknown)
1045        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
1046        done offline. A good approximation of the pressure load anomaly is
1047        necessary to avoid large initial adjustment processes underneath
1048        deep-reaching shelfice.
1049      - small fix in ISOMIP shelfice_thermodynamics
1050      - add more sophisticated thermodynamics of Hellmer (1989), this is
1051        now the default
1052      - give a few constants more intuitive names
1053    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
1054      if bulk formulae are used in long integration (especially EmPmR). Turn
1055      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
1056      if balancePrintMean, the imbalance that is substracted is printed to
1057      STDOUT.
1058    o fix bug (typo) in obcs_apply_eta.F
1059    o add a new package shelfice which enables us to model the circulation
1060      underneath shelf-ice with draughts of hundreds of meters.
1061     - works
1062     - to do: + include improved thermodynamics
1063              + check whether kSurfC (from model/inc/SURFACE.h) can be used
1064                instead of new field kTopC
1065              + can we use topoFile, Ro_surf and existing code in ini_depth.F
1066                instead of new field R_shelfIce and new code in ini_depth.F
1067                and ini_mask_etc.F?
1068              + adjust vertical mixing schemes?
1069    o seaice pkg:
1070     - add a cpp-flag to include a simple formula for a salinity dependent
1071       freezing point of sea water at the surface
1072     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
1073       meridional stresses are now different (and hopefully correct)
1074    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
1075       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
1076       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
1077    o pkg/diagnostics: add options and parameters for regional-statistics
1078       diagnostics ; define regions by reading a region-mask from a file
1079       (might add other options later)
1080    o pkg/bulk_force:
1081     - add option and parameters to use AIM surface-flux formulae.
1082     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
1083       others forcing fields (defined in PARM05, parameter file "data") are loaded
1084       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
1085     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
1086     - use the right EXCH call for uwind,vwind (to work on CS-grid).
1087     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
1088       and parameters (note: calcWindStress replaces .NOT.readwindstress).
1089     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
1090    
1091    checkpoint58
1092    o add "--embed-source" option to genmake2 which, when the supporting
1093      tools can be compiled (as determined by genmake2) will turn on the
1094      embed_files package which then embeds the entire MITgcm source code
1095      (*.[fFhc] + Makefile) used for the build within the executable
1096      - requested by CNH but off by default
1097      - adds a paltry <9MB to the mitgcmuv executable in most cases
1098      - only writes the output when useEMBEDSRC in eedata is true
1099    o clean up 3-dim. relaxation codes:
1100      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
1101      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
1102      * Thanks to Tom Haine for testing!
1103    
1104    checkpoint57z_post
1105    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
1106      affects output (@ truncation level) of exp. plume_on_slope ; updated.
1107    o fix the pickup behavior for obcs in combination with ptracers
1108    o fix a bug in ptracers_external_fields_load
1109    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
1110      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
1111    o transfered surface NH pressure to eta field (if exactConserv).
1112    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
1113         and update lab_sea output.txt file.
1114    o completing 3-dim. relaxation code: additional term
1115         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
1116      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
1117      * At compile time, in "EXF_OPTIONS.h" set
1118          #define  ALLOW_CLIMTEMP_RELAXATION
1119          #define  ALLOW_CLIMSALT_RELAXATION
1120      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
1121          tauThetaClimRelax3Dim = 15552000.0,
1122          tauSaltClimRelax3Dim  = 15552000.0,
1123      * 3 cases:
1124          1) Use a constant-in-time 3-dim. field
1125          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
1126          3) Real-time relax. to time-evolving prescribed field
1127    o Adding Laplacian-type smoothness constraint on
1128      initial and boundary (forcing) controls (ic, bc)
1129      * enable at compile-time via
1130        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
1131      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
1132      * Absolute scale somewhat unclear so far
1133      * no area weighting was included since no other cost term does so far
1134    
1135    checkpoint57y_post
1136    First step for a NLFS adjoint
1137    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
1138    o new init. routines for calc_r_star, calc_surf_dr
1139    o still need to deal with ini_masks_etc
1140    o testreport seemed happy
1141    checkpoint57y_pre
1142    
1143    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
1144    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
1145    o add new offset feature to offline pkg (plus minor cleanup)
1146    o cfc fixes for final year of integration
1147    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
1148      be in GCHEM_OPTIONS).
1149    
1150    checkpoint57x_post
1151    o fix testreport Pb in multiple test experiment.
1152    o cleanup our namelist syntax in verification:
1153      - make it more F95 standards compliant (some work still needed)
1154      - allows the vast majority of our tests to work with gfortran
1155    o Non-Hydrostatic:
1156     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
1157     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
1158    o Allow to apply AB on T,S rather than on AB(gT,gS):
1159     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
1160     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
1161       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
1162     - need a "clever" read_pickup to restart from the other AB formulation
1163    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
1164    o remove some unused variables (reduces number of compiler warnings)
1165    o adjoint
1166      * Disable useVariableViscosity for adjoint for time being
1167        (there are a number of extensive recomputations)
1168      * Initialize certain variables needed for adjoint
1169    
1170    checkpoint57w_post
1171    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
1172                 fix the singleCpuIO RS version of MDSWRITEFIELD
1173       and add a WARNING if using globalFiles=T with multi-processors.
1174    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
1175      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
1176    o tracer advection scheme:
1177      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
1178       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
1179       was not very convenient).
1180      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
1181       (further tests needed for the implicit DST & Flux-Limiter schemes).
1182    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
1183      and sRef for convenience, handy, when you want to initialize
1184      ptracers in a large domain with a constant non-zero value. Also,
1185      untangle ptracers_init.F a little.
1186    
1187    checkpoint57v_post
1188    o change dome exp. to use variable viscosity in side-drag terms.
1189    o remove all the files from the cfc_offline test since they are now
1190      incorporated into tutorial_cfc_offline which has been producing
1191      identical results for a few days of testing
1192    o add new parameter: sideDragFactor to enable half-slip-side BC
1193      and change side-drag S/R to use viscosity from mom_calc_visc
1194      (can switch back by setting sideDragFactor=0.); affects results at
1195      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
1196       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
1197    o vorticity & strain are now computed without masking, to account for
1198      no-slip-side BC in variable viscosity calculation ; mask is applied
1199      anyway later on, before computing advection/coriolis terms.
1200    o modify exp4 to test new obcs support for reading from external files
1201      and for passive tracers
1202    o fix behavior of ptracers_monitor when monitor output is written to a
1203      netcdf-file; still not independent of monitor.F (writes in the same
1204      file).
1205    o change default value of tRef (put a uniform, meaningful value for ocean
1206      & atmos) and initialize sRef (was missing, as Martin mentioned).
1207    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
1208      to be proportional to enstrophy dissipation length.  Thus,
1209       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
1210      This is now consistent with Smagorinsky and with the manual.
1211    
1212    checkpoint57u_post
1213    o OBCS and PTRACERS: add open boundary support for passive tracers
1214      - either use homogenous (pseudo) v.Neumann conditions or prescribe
1215        OB-values from file; this is not different from the way theta and salinity
1216        are treated
1217      - however, Orlanski-radiation conditions are not supported, and the model
1218        will stop if you use pTracers and Orlanski at the same time.
1219      - beefed up the rountine obcs_external_fields_load: now only those open
1220        boundary values are overwritten with values from files for which there
1221        are really files, otherwise the OB-fields remain untouched. This makes
1222        it possible to use different OBs at different ends of the domain (as
1223        with EXF)
1224    o reduce number of exch calls in shap_filt (s2).
1225    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
1226      truncation level) 4/5 MLAdjust test results (11&12 digits match).
1227    
1228    checkpoint57t_post
1229    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
1230    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
1231      same truncation, independent of the face number: affects affects several
1232      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
1233    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
1234      note that biharmonic viscosity + no-slip was not tested in any experiment.
1235    o fix bug in non-linear free-surf side-drag ; generate new output for
1236      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
1237    o make mnc honor the writeBinaryPrec flag for most kinds of output
1238    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
1239    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
1240      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
1241    o add brackets in multi-terms sum to get same truncation, independent of
1242      the face number (manage to get exactly same value of gU,gV at the cs-edge)
1243      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
1244    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
1245      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
1246      a maximum grid-scale Reynolds number.  Also, changes all length calculations
1247      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
1248      Suggested values of viscosity parameters found in mom_calc_visc.
1249      Many new viscosity diagnostics available.
1250    
1251    checkpoint57s_post
1252    o Add clearing-house for viscosity calculations, mom_calc_visc and
1253      correct numerous bugs in LeithD and Smagorinsky discretizations.  
1254      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
1255      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
1256      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
1257      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
1258      The Strain-Tension form is now called with useStrainTensonVisc=.true.
1259      ViscAhStrain and viscAhTension are now retired.
1260    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
1261    o In response to JMC's bug report, genmake2 now ignores any soft-links
1262      that it finds in the *current* directory when searching for files.
1263      Soft-links found in any other source directories will still work as
1264      they did before.
1265    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
1266      a C routine to unlimit the stack size
1267    o mnc-ify pkg/aim snapshot vars
1268    o mnc-ify pkg/land as requested by Daniel
1269    o various changes to mnc including:
1270      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
1271      - output can now be grouped so that all files within a group
1272          change the ITER portion of their names in lock-step together
1273      - can now read ("global") PER-FACE (in addition to PER-TILE) files
1274          and works with both EXCH1 and EXCH2 (but needs more testing)
1275      - writing works for all verification test cases w/ g77 on Linux
1276    
1277    checkpoint57r_post
1278    o make MNC variable initialization happen earlier
1279    o add diagnostics for (almost) each term of the momentum Eq.
1280    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
1281    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
1282    o remove MINIMAL_TAVE_OUTPUT option ;
1283      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
1284    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
1285      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
1286    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
1287    o add time-dependent SST, SSS control
1288    o cost terms in ecco/ modularized (new cost_generic.F)
1289    o cost_averages routines are modularized (new cost_averagesgeneric.F)
1290    o new infrastructure for seaice model vs. obs misfits in seaice/
1291      * driver from the_main_loop.F is seaice_cost_driver.F
1292      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
1293      * gradient check in Exp. 6a of natl_box_adjoint/
1294    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
1295      (see README file)
1296    
1297    checkpoint57q_post
1298    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
1299    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
1300      - bug was reported by Jean-Michel and Ian Fenty
1301    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
1302      update exp. cpl_aim+ocn output.
1303    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
1304      Needed for high-res. runs with large global files
1305      to be able to limit tapelev size
1306    o Changed some tests for adjoint:
1307      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
1308      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
1309      * global_ocean.90x40x15/ back to default 3-level checkpointing
1310    o Modifications to enable scripted COMMON to MODULE conversion
1311      * verification/OpenAD/code/ has necessary scripts and description;
1312      * converts, compiles and runs successfully;
1313    
1314    checkpoint57p_post
1315    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
1316    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
1317      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
1318    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
1319    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
1320      (was already the case for dissipation with mom_vecinv,
1321       and also the case for grad.PhiHyd when staggered-timeStep)
1322      This will allow to put dissipation out-off the AB time-stepping.
1323     Unfortunately, affects truncation error. Update output of exp. that "fails"
1324      (cg2d matching number) and leave the others for later: front_relax(10),
1325      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
1326      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
1327    
1328    checkpoint57o_post
1329    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
1330      (2) its ready to be documented during the 20050801 DocFest
1331    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
1332      for ideal_2D_oce and lab_sea on linux_ia32_g77
1333    o set to #undef CTRL_SET_OLD_MAXCVARS_30
1334      in global1x1_tot/code_seaice_adj to access indices 32, 33
1335      (worth another tag)
1336    
1337    checkpoint57n_post
1338    o adding precip control xx_precip 32
1339    o adding swflux control xx_swflux 33
1340    o Replacing 10 forcing penalty cost routines by 1 generic.
1341    o Implementing partitioning in time-mean and variable adjustment
1342      for atmos. state.
1343    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
1344  o in natl_box_adjoint:  o in natl_box_adjoint:
1345    * updated: results_bulk/    * updated exp 1 to 10
1346    * not yet updated: results/, results_seaice/      (but does not have time-mean vs. variable split results yet)
1347    o updated global1x1/*_seaice_adj/
1348      to incorporate latest changes
1349    o enable useSingleCpuIO for mdsio vector routines
1350      (applies in particular to tapelev I/O)
1351    o removed inefficient K-loop in all active_file*control*.F
1352    
1353  checkpoint57m_post  checkpoint57m_post
1354  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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