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revision 1.519 by heimbach, Thu Jul 28 14:35:47 2005 UTC revision 1.938 by jmc, Mon Jan 14 02:29:20 2008 UTC
# Line 4  $Name$ Line 4  $Name$
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7  o adding precip control xx_precip  checkpoint59m
8  o moved ptracer ctrl index 17 -> 32  o pkg/seaice: use different time constant for melting (SEAICE_gamma_t)
9      and freezing (SEAICE_gamma_t_frz) ice due to mixed layer temperature
10    o gad_som : fix flux output (& diagnostics) to have same units as other  
11      advection scheme fluxes (was previously multiplied by deltaT).  
12    o added verification/seaice_obcs both to test seaice open boundaries
13      and to provide an example matlab scrpt for generating them
14    o added verification/lab_sea/input.salt_plume for testing pkg/salt_plume
15    o pkg/salt_plume: clean up salt_plume_frac.F to
16      remove redundancy in PlumeMethod 1 and 4
17    o pkg/kpp: added saltplume diagnostics
18    o pkg/obcs and pkg/seaice:
19      - do not set uice and vice to zero when OB*icefile are unspecified
20      - OBCS_SEAICE_AVOID_CONVERGENCE is undefined by default
21      - moved seaice tracer obcs after call to seaice_growth
22    o pkg/salt_plume: added various options for salt plume depth
23      criterion and for vertical distribution of the salt
24    
25    checkpoint59l
26    o pkg/ptracers: new version of ptracers pickup:
27      read meta file and write only fields which are needed to restart.
28      ( same logic as main pickup file ; also using pickupStrictlyMatch )
29    o pkg/seaice:
30      - add timescale for melting due to warm mixed layer as a means of
31        setting SEAICE_availHeatFrac more conveniently
32      - add a CPP-flag/runtime parameter check for flooding algorithm
33      - reformulated availHeat in seaice_growth.F to be independent of AREA
34    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
35      unit changes
36    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
37    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
38      SX vector computer.
39    o pkg/seaice:
40      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
41        seaice forcing fields can now be read only through pkg/exf
42      - removed some unused halos
43    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
44    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
45      or U/VICE from U/VWIND before computing U/VSTRESS
46    
47    checkpoint59k
48    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
49      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
50    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
51      all experiments pass when compile with un-initialised var. checking option.
52    o added pkg/salt_plume
53    o script to test restart (for now, in MITgcm_contrib/jmc_script)
54    o pkg/seaice: new read/write pickup version.
55      read meta file and write only fields which are needed to restart.
56      ( same logic as main pickup file ; also using pickupStrictlyMatch )
57    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
58    o lab_sea.hb87: modify the domain & update output.hb87.txt :
59      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
60      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
61      process. Fixed here by closing the domain at the Northern boundary.
62    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
63    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
64      a set of consecutive levels in/from a 3-D array.
65    o pkg/ptracers:
66      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
67      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
68    
69    checkpoint59j
70    o in pkgs: dic, obcs, offline, rbcs:
71      standard way to compute coeff. for time interpolation between 2 time reccords
72      which retains full precision (& make results less dependent on compiler).
73      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
74    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
75      packages instead of reading ice cover and wind speed separately
76    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
77     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
78      to allow to compile customized code before the update)
79    o cleaning-up:
80      - fix CPP instruction syntax in pkg/obcs
81      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
82        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
83      - fix some threads issue in IO parts.
84    o pkg/dic:
85      - add tons of "_d 0" (--> much better testreports !)
86       and then update outputs of tutorial_global_oce_biogeo
87    o pkg/mom_fluxform:
88      add a special version of momentum advection intended to conserve momentum
89      next to a bathymetry step or a coastline edge. (default = off = #undef)
90    o new read/write pickup version:
91      - for now, only implemented for main (mdsio) pickup file.
92      - write out only what is needed to restart; merge pickup_nh , pickup_ph
93        and main pickup together.
94      - read meta file; read only what is needed to restart; stop if a field
95        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
96        if it make sense (even if the restart is not perfect).
97      - if no meta file, assume that pickup to read corresponds exactly to
98        a pickup that would currently be written.
99      - read pickup written in the old format (until checkpoint59i) if it
100        recognizes an old meta file (no field-list).
101      - add a meta file in exp. which starts from a pickup: 2 cases:
102        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
103         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
104        b) a meta file describing the content of the associated pickup file
105         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
106    o pkg/mdsio & pkg/rw:
107      - new routine to read a meta file ; new set of routine to read
108        Multiple-fields file (with meta file).
109    o added open boundary conditions capability for seaice
110        HSNOW, HSALT, UICE, and VICE
111    
112    checkpoint59i
113    o adjoint:
114      * fix multiDimAdvection adjoint
115        (partial recomputation problem by TAF for fVerT(:,:,kDown)
116        and comlev1 size definition (maxpass vs. max. number of tracers)
117      * verification/global_ocean.90x45x15 adjoint now tests
118        NLFS and multiDimAdvection using DST3 (=30)
119      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
120    o pkg/kpp: add "_d 0" to real constant (if missing);
121      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
122      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
123    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
124      for internal parameters related to restart process (formerly from PARAMS.h)
125      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
126    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
127      as argument. (only atm2d & obcs write_pickup have not yet been updated)
128    o pkg/monitor:
129      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
130      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
131      - account for deep Atmosphere factor and density factor (anelastic)
132    o added open boundary conditions capability for seaice HEFF and AREA
133    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
134      thermodynamics
135      - requires a little reorganization, which affects the testreport results
136        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
137        so that now the conservative form is tested
138      - add a few comments
139    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
140    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
141    o add new diagnostics to seaice: advective, diffusive fluxes (only for
142      multidim-advection, for scheme 2 they are not filled) and transports,
143      thermodynamic growth rates
144    o change units of EmPmR (inside the code, + within coupling interface)
145      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
146      Affects results @ truncation level (cg2d match) and update output of
147       experiments: lab_sea(6), global_ocean.90x40x15(10),
148      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
149      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
150      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
151      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
152    
153    checkpoint59h
154    o pkg/exf:
155      - improve vectorization by moving if-statement out of loops in
156        exf_mapfields, exf_radiation
157      - exf_bulkformulae.F: introduce 2D fields and vectorize code
158    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
159    o testreport:
160      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
161        monitor & update offline_exf_seaice exp. output.
162      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
163    o pkg/seaice:
164      - bug fix in the evp solver: boundary conditions were affected be
165        masking of zMax/zMin (changes results)
166      - minor bug fix in boundary conditions in seaice_calc_strainrates
167        (changes results for no_slip)
168      - seaice_lsr.F: make interpolation of eta dependent on boundaries
169      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
170      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
171        stress formulation and no-slip boundary conditions
172    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
173      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
174    o pkg/seaice: a first HSALT time stepping equation has been checked in
175    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
176      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
177      without requiring DO-IF statements
178    o pkg/thsice:
179      use continuous power-law function for partition of energy between lateral
180      melting/freezing and thinning/thickening ; old code using step function
181      still available with #undef THSICE_FRACEN_POWERLAW
182      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
183    o testreport: change AD testing : check against results/output_adm.txt
184      using same scripts as for forward test.
185    
186    checkpoint59g
187    o adjoint testing: in preparation for changing testreport:
188      - output format: cost and grad written on separated lines
189      - ad output results in directory "results" (instead of "results_ad")
190    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
191    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
192    o pkg/ecco: allow user defined cost function contributions
193    o testreport:
194      Allow to choose (per experiment) the list of tested output variables
195       and the main variable (used to issue a pass/FAIL ) ;
196      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
197      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
198      Also modify printing of summary:
199       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
200       b) echo the list of tested variables in the individual summary.txt of
201          each experiment.
202    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
203      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
204      (but still depend on the tile decompostion of the domain).
205    o pkg/seaice: change a discretization detail to make the B-grid code
206      "more symmetric". This change is likely to remove all "ridges/leads" that
207      where quasi-aligned with the grid in B-grid solutions. It may also be
208      the solution to the stress coupling issues with the B-grid.
209    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
210      remove .cvsignore from input dir. (since testreport no longer run here).
211    o pkg/thsice:
212     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
213     - fix reshaping of sea-ice just after advection:
214       melt all the ice only if ice-volume is too small.
215     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
216       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
217     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
218    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
219      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
220    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
221      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
222      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
223      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
224      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
225      -> update output.txt
226    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
227     this affects truncation error: -> update output.txt of exp:
228      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
229      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
230    
231    checkpoint59f
232    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
233    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
234      a bounded range (in forward mode)
235    o pkg/ecco, ctrl, autodiff and mom_common:
236     internal parameter controls, completements of implementations
237    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
238    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
239      (not seem any difference in testing results).
240    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
241       at face corners.
242    o pkg/generic_advdiff:
243     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
244      loop range indices for computing vertical advection tendency
245      and do the calculation in the interior only (no overlap) ;
246      for now, only implemented for SOM advection (to save CPU time).
247     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
248    o exch2 adjoint
249      First set of changes:
250      - add exch2 hand-written adjoint templates
251      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
252        This will require cleanup in pkg/autodiff/*.F
253        (changed routines currently kept separate in verif. code/)
254      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
255        that used to hide exch2 or cubed-sphere specific code
256        (commented via 'cph-exch2')
257    o pkg/seaice
258      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
259    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
260       output of global_ocean.cs32x15.thsice .
261    
262    checkpoint59e
263    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
264      for B-grid vector (not yet tested) and C-grid vector (<- only used
265      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
266    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
267      (#ifdef ALLOW_SALT_PLUME)
268    o gather_2d/scatter_2d: removed halo regions
269    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
270      scheme and the corresponding test case (under front_relax dir). For now,
271      only available with Skew-flux form and not yet tested in realistic set-up.
272      adjoint: store directives updated, but gradient checks deteriorated,
273      so maybe GM/Redi adjoint is now broken.
274    o seaice adjoint
275      * add AREA, HEFF, HSNOW as control variable
276        (should not change lab_sea results)
277      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
278    o pkg/seaice:
279      * added computation of saltFlux in seaice_growth;
280        For time being, sea ice salinity is assumed constant
281        contribution of snow flooding to freshening of sea ice is neglected.
282        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
283        defaults to 0.0 in order to maintain backward compatibility.
284        Typical values for SEAICE_salinity are 4 to 10 g/kg.
285      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
286      * added SEAICE_availHeatFrac, which specifies fraction of surface level
287        heat content used to melt or grow ice
288      * commented out cap of HICE: it helps keep ice thinner
289      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
290      * applied OBCS T/S mask to HEFFM sea ice mask
291    
292    checkpoint59d
293    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
294     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
295     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
296    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
297     and change default value of parameter "GM_Small_Number";
298     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
299       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
300       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
301    o pkg/ecco: cost function when applying pkg/smooth to controls
302    o pkg/ctrl: add forcingPrecond run time parameter
303    o pkg/seaice:
304     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
305     - fix bug in metric terms of u-equation in LSR solver (implicit part),
306       changes verification/lab_sea
307     - rearrange implicit part of u-equation in LSR solver to make it easier to
308       read, understand, and debug. This causes changes at the truncation level.
309     - fix (serious) bug in the boundary conditions (sign error in the implicit
310       part) of the LSR solver. Changes all LSR results.
311     - fixed problem with HSNOW initialization to avoid thick snow when AREA
312       is initilized with small values - does not change lab_sea results.
313     - added HsnowFile initialization capability
314    o pkg/smooth: addition to model/src and pkg/ctrl so allow
315     initialization of pkg/smooth and application to control vector
316    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
317    o dependencies: pkg/profiles requires pkg/cal
318    o pkg/profiles:
319     - added option ALLOW_PROFILES_GENERICGRID
320         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
321         that interpolation information (grid points and coefficients) is provided
322         within the netcdf input files.
323         -> sample matlab scripts can be found in MITgcm_contrib/gael
324         that allow you to prepare netcdf input files.
325     - also modified: cleaner include statements, cleaner error print statements,
326       cleaner stops when error, and more tests of the netcdf input files consistency.
327    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
328    o pkg/seaice:
329     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
330       requires a new routine: seaice_diagnostics_fill.F
331     - make sure that seaice does not move if not forced (pressure replacement
332       method, Hibler and Ip, 1995), changes results
333     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
334     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
335       It is turned off by default (=-1.), because it changes the results.
336     - make it possible to read AREA from a file, too.
337    
338    checkpoint59c
339    o add S/R and diagnostics for oceanic mixed-layer depth
340    o move GMRedi call after all vertical mixing schemes (including KPP)
341    o pkg/thsice:
342     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
343      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
344    o pkg/obcs:
345     - bug fix for balance code
346    o pkg/seaice:
347      - allow values of SEAICE_elasticParm > 1
348      - add new parameter SEAICE_evpTauRelax as an alternative
349        to SEAICE_elasticParm
350      - make lsr boundary conditions free slip (by default), changes result
351      - add code for no slip boundary conditions for lsr
352      - set minimum of zeta to zero (and not 4e8) (changes results)
353      - add a cap on AREA after advecting AREA if seaice_growth is not called
354    o change calculation of Visbeck K:
355      - no longer depend on tapering scheme; instead, compute slope (limited
356        by GM_maxSlope). this is equivalent to what was comuted before with
357        clipping or linear tappering.
358      - fix vertical averaging (wrong by 1/2 level)
359      - leave the old version (but will not be maintained) within
360        #ifdef OLD_VISBECK_CALC / #endif
361      - update output of exp. ideal_2D_oce
362    o change error catch in calc_r_star to improve vectorization
363    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
364      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
365    o adjoint:
366      Re-organized adjoint checkpointing according to Matt Mazloff
367      (but with modifs/completions/cleanups)
368      Storing is now bundled into large arrays to optimized I/O
369      (and second step in cleanup of the_main_loop)
370    
371    checkpoint59b
372    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
373      - export/import (between ocean & coupler) fields needed for ocean DIC.
374    o pkg/seaice:
375      - get rid of three more exchanges seaice_calc_viscosities (required
376        different loop boundaries in seaice_lsr and seaice_ocean_stress)
377      - bug fix in seaice_ocean_stress (update of lab_sea required)
378      - reduce loop boundaries to necessary minimum also in seaice_evp
379      - go back to the old way of computing deltaC/Z as the adjoint likes that
380        better
381    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
382      passive tracer to an Age Tracer) + update output.txt
383    o pkg/exf:
384      - implement A-grid / C-grid selection for wind-stress input files.
385      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
386      for now, in exf_bulk_largeyeager04.F only :
387      - change implementation for case where windspeed + 2. components wind-stress
388        are read-in. AND use rhoConstFresh to convert evap.
389    o pkg/seaice:
390      - use correct EXCH_UV for wind-forcing (on A-grid).
391      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
392        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
393    o pkg/exf:
394      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
395      EXF_INTERPOLATION:
396      - merge global_with_exf/code version of exf_interp_read.F
397        to the main code ;
398      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
399        reading the file ; Important: This options needs to be defined to recover
400        previous code.
401        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
402      - no longer loose real*8 precision along the way when using exf_iprec=64.
403    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
404      - change discretisation of evp-solver in order to avoid another exchange
405        (changes lab_sea) and clean up a little
406      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
407        help the adjoint (this also changes the results slightly)
408      - add a few "_d 0" where they had been missing in seaice_evp.F
409      - cleaning up: remove unused seaice_calc_rhs.F
410    o pkg/exf: some cleaning-up:
411      - change various "constants" into runtime parameters
412      - cleaned-up Large&Yeager04 routine which should eventually
413        replace exf_bulkformulae.F (changed names of S/R and CPP)
414        and merged various ALLOW_ATM_WIND options
415     only used with thsice pkg (in thsice_get_exf.F):
416      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
417        which are used when useStabilityFct_overIce=TRUE (= the default)
418      - change default values of ice & snow emissivity and scale downward LW
419        by ice & snow emissivity.
420    o pkg/thsice:
421     fix few little problems, in thsice_calc_thickn.F:
422      - growth vertically (and not laterally) if iceFrac == iceMaskMax
423      - melt only laterally if hIce < hThinIce (as the comments say)
424      and in thsice_extend.F:
425      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
426      - start to form ice as soon as the minimum ice-volume is reachable.
427     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
428      and cpl_aim+ocn
429    o pkg/kpp
430     - move computation of surface related input fields to KPP into a new
431       subroutine kpp_forcing_surf.F
432     - remove wrong (within bi,bj loops) EXCH calls.
433     - little cleaning (add argument myThid in last position, cvs header ...)
434     - for now, fix conservation problem by exchanging KPPviscAz (may not
435       be the best fix)
436    o pkg/seaice
437     - check for inconsistent evp parameter/cpp-flag combination
438     - remove leftover errIO flat for obsolete name list error handling
439    o OpenAD
440     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
441    
442    checkpoint59a
443    o pkg/seaice: some parameter clarifications and a little bit of clean up
444    o pkg/thsice: rename run-time parameters:
445       himin       -> hIceMin
446       himin0      -> hThinIce
447       hihig       -> hThickIce
448       i0          -> i0swFrac
449       transCoef   -> bMeltCoef
450       frac_energy -> fracMelting
451      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
452       with default values (for now) that do not change the results.
453      remove old version of thsice vars advection in pkg/seaice.
454    o in FFIELDS.h:
455      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
456      - make pLoad & sIceLoad always available (but still only used if
457         ATMOSPHERIC_LOADING is #define).
458    o pkg/kpp: replaced _KPP_RL with _RL
459    o bug fixes for vertical diffusivity computations when both KPP and
460        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
461        are no longer updating the vertical diffusivity array
462        (passed as argument) but are (re-) setting those arrays.
463    o pkg/seaice: fix bug in evp solver, while doing that
464      - change (improve?) discretization of stress computations for both
465        cgrid-lsr and evp solver
466      - add a new routine to compute strain rates
467      - the above changes lab_sea results
468      - add no slip conditions for evp solver (off by default), lsr-version
469        may follow
470      - fix exchange for shear at Z-points (does not change lab_sea)
471      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
472        (to force the user to pick a time step since there is not "safe" way
473        of choosing it)
474      - add principal stress diagnostics
475      - rearrange fields for evp a little to avoid having to call a: too many
476        exchanges and b: exchanges for stress trensor components which we do
477        not have.
478      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
479        of evp, complete rewrite for lsr case (latter is does not yet work
480        in all cases)
481    o pkg/kpp: add code to have mixing in shelf ice caverns
482      - add myThid to all kpp routines (long overdue)
483    
484    checkpoint59
485    o pkg/exf:
486      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
487        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
488      - move exf header files from lower_case.h to UPPER_CASE.h ;
489        add missing cvs Header & Name
490      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
491      - add namelist param. selectStressGridPosition, exf_monFreq
492      - retire many _CLIM routines, and remove data.exf_clim
493        + params moved to data.exf
494        + climsst, climsss now handled by exf_set_gen, i.e.
495          climss?period=0 refers to constant field,
496          climss?period=-12 to monthly forcing
497      - split up namelists in data.exf
498    o pkg/seaice:
499      - remove seaice_exch and seaice_exch_uv
500      - remove superfluous exchange of theta
501      - add myThid to seaice_budget_ocean/ice
502      - add new interface for atmospheric wind forcing (C-grid only)
503        + new routine
504        + two new field (taux, tauy for stress over ice)
505        + removed one global field (DAIRN) for C-grid case only
506    o pkg/thsise
507      - 2nd set of modifs for thsice adjoint in conjunction with exf
508    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
509    
510    checkpoint58y_post
511    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
512      vertical diffusivity, similar to that in MOM4; turned on using
513      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
514      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
515    o Added capability for 3D specification of background vertical diffusion
516      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
517      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
518      "data" file that contains the 3D vertical diffusivity coefficients.
519    o ice dynamics (pkg/seaice) with thsice thermodynamics:
520      - add code within pkg thsice to advect & diffuse sea-ice fields
521      similar to (and will replace) what has been added in  seaice_advdiff.F,
522      but: - conserving Mass, Heat & Salt.
523           - better when using non-linear advection scheme (not yet fully tested)
524           - can also be used in atmospheric set-up (for now, only the diffusion).
525    
526    checkpoint58x_post
527    o IO option for global-file compact format:
528      - add options when generating topology (utils/exch2/matlab-topology-generator)
529      - add I/O capability (pkg/mdsio).
530      - adapt utils/matlab/rdmds.m to read this format.
531      for now long-line format not yet supported by pkg/mdsio (& exch2).
532    o shelfice: add a few diagnostics
533    
534    checkpoint58w_post
535    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
536      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
537      (and replace horiVertRatio in NH code).
538      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
539                         and tutorial_plume_on_slope (sensitive to truncation)
540    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
541      directly to drive seaice model (C-grid only)
542    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
543     - reintroduce computation of wind from stress,
544     - compute tau (in exf_bulkformulae.F) from windstress averaged to
545       mass points to avoid tau = 0
546     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
547    o rdmnc.m: make it work with "global" files created with gluemnc
548    o rdmnc.m : some improvements in dealing with singleton dimension
549      (tested on all testreport mnc output files).
550    o genmake2: disable pkg/profiles if netcdf test fails.
551    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
552    o move call to cal_readparms up to make calendar parameters/variable available
553      to all packages
554    
555    checkpoint58v_post
556    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
557      useDynP_inEos_Zc tested.
558    o pkg/exf: changes to properly interpolate/mask/scale initial fields
559    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
560      and portions thereof.  See read_cs.txt for description and examples.
561    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
562      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
563      following the great-circle arc between those 2 points.
564    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
565      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
566    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
567     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
568     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
569     - still needs work (not working with some options ; efficiency to improve)
570       and serious testing.
571     - use this scheme for temperature & salinity in 2 advection test exp.:
572       advect_xy & advect_xz, respectively.
573    
574    checkpoint58u_post
575    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
576    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
577    o testreport: add option "-skipdir" to skip some test.
578    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
579      momentum calculation.
580    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
581    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
582      remove checkpoint.F and the_correction_step.F (no longer used);
583      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
584    o add option (linFSConserveTr) to correct for tracer source/sink due to
585      Linear Free surface
586    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
587    o pkg/thsice: fix reading mnc-pickups
588    
589    checkpoint58t_post
590    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
591    o pkg/mdsio:
592     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
593       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
594       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
595     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
596     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
597       either MDS_READ_FIELD or MDS_WRITE_FIELD )
598     - new S/R (to replace MDSWRITEMETA), which allows to write more
599       informations (variable names, time ...) to meta files.
600     - modify rdmds.m to give back the meta file content.
601    o pkg/diagnostics: change vertical interpolation to be safer, and more
602       flexible (define p-levels to interpolate to in data.diagnostics);
603      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
604       diagnostic pointer.
605    o pkg/seaice: more cleaning up of seaice_growth, added many comments
606    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
607    o fix multi-category seaice:
608     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
609       SEAICE_MULTICATEGORY
610     - fix short wave heat flux
611    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
612       and allow to use EVP solver. Change forward lab_sea: test both EVP
613       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
614    o Initial check-in of lab_sea adjoint
615      (very similar to natl_box_adjoint/code_seaice)
616      * used C-grid and EVP solver
617      * used KPP, GM/Redi
618      * uses inAdExact=.TRUE.
619      * gradient checks fail for both ADM and TLM
620        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
621        f.d. gradients actually seem more problematic than ADM, TLM gradients;
622        issue is related to forward mismatch between g77 an ifort
623    o pkg/seaice: overhaul of thermodynamics
624     - growth.F and groatb.F are replaced by new routine seaice_growth.F
625     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
626     - move a few global fields out of SEAICE.h into seaice_growth.F and
627       make them 2D (FICE/QNETO/ ...)
628     - remove FO (it is the same as QNETO)
629     - introduce a few local fields to avoid modifying external fields such
630       as atemp, etc.
631    
632    checkpoint58s_post
633    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
634      changed exf_set_gen.F so that
635        genperiod=0 means input file is one time-constant field and
636        genperiod=-12 means input file contains 12 monthly means
637    o CG2D: use pre-computed solver main-diagonal (stored in common block);
638      this affects truncation error ; generate new output file for exp. which
639      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
640        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
641        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
642        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
643        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
644        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
645    o start implementation of deep-atmosphere and anelastic formulation
646    o verification: remove 2nd copy of input files and use script "prepare_run"
647      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
648    o mom_common/vecinv/fluxform: fix a few initialisation isssues
649    o profiles: fix for multithreaded case
650    
651    o diagnostics: rename few diags:
652      s/'PRESSURE'/'RCENTER '/g
653      s/'TICE    '/'oceFreez'/g
654      s/'TAUX    '/'oceTAUX '/g
655      s/'TAUY    '/'oceTAUY '/g
656      s/'SWFLUX  '/'oceQsw  '/g
657      s/DIFx/DFxE/g
658      s/DIFy/DFyE/g
659      and add few ocean-forcing diagnostics:
660      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
661    o modifications to pkg/seaice/growth.F and budget.F, which change results of
662      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
663      as actual snow thickness.  It now refers everywhere to effective snow
664      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
665    
666    checkpoint58r_post
667    o modifications to pkg/seaice/growth.F, which change results of
668      lab_sea experiment: fixes pertain to melting snow over open water, to
669      masking EVAP under sea ice, and to using the correct AREA variable for
670      computations of EVAP, PRECIP, HSNOW, and GHEFF
671    o add ability to read bathy, salt, and theta using MNC (off by def)
672    o add flooding algorithm and advection of HSNOW for pkg/seaice;
673      both are turned off by default and do no change any results
674    o seaice advection with pkg/thsice: a step toward the use of non-linear
675      advection scheme, but #ifdef or commented out for now (requires more EXCH).
676    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
677      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
678      in natl_box (affects results @ truncation level: update output.txt)
679    o multi-threading and IO:
680      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
681      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
682        (needed to work with SingleCpuIO): tested in all verif. exp.
683    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
684      affects the results (but none of the verification test uses this scheme).
685    o Adding some pkg/diagnostics capability to pkg/seaice
686      (will certainly be subject to changes)
687    o ctrl: adding new control variables:
688      lwflux, lwdown, evap, snowprecip, apressure, runoff
689    
690    checkpoint58q_post
691    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
692      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
693      high_res_cube configuration by 4% on Columbia.
694    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
695      add (in global_with_exf/code) a version of EXF_INTERP_READ without
696      dynamical allocation (seems to work in multi-threaded).
697    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
698      single CPU io) so that TAF does not have to see EESUPPORT.h
699    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
700    
701    checkpoint58p_post
702    o obcs: stop if obcs is used with useCDscheme = .true.
703    o shelfice:
704     - fix a sign error so that no slip at shelfice interface works
705     - remove stop for combination non-hydrostatic code and shelfice. That does
706       not mean, that the results are correct, but at least they are numerically
707       stable
708    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
709    o added adjoint exch routined for all exch*3d* routines
710      and updated flow directives
711    
712    checkpoint58o_post
713    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
714      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
715    o change controling S/R for writing pickup file (new S/R do_write_pickup)
716      and clean-up reading/writing of pickup files.
717    o fix local version of read/write pickup (NH part) in rotating_tank/code
718    o simplify EXCH interface:
719     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
720     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
721    o added the regrid package
722    o shelfice:
723     - add a simple boundary layer scheme to reduce noise
724     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
725    
726    checkpoint58n_post
727    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
728       local variable (not in common block).
729    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
730      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
731      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
732        to work with SingleCpuIO.
733    o add "_d 0" to real constant of pkg/cfc subroutines ;
734       update exp. cfc_exemple & tutorial_cfc_offline output files.
735    o multi-threading and IO:
736      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
737        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
738      - barrier before and after reading.
739      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
740      - avoid using MDS_WRITELOCAL for LAND pkg output.
741      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
742        common-block variables ; Allows multi-threading with master-thread IO.
743    o change default MAX_NO_THREADS from 32 to 4 ;
744      and stop cleanly when MAX_NO_THREADS is too small.
745    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
746    
747    checkpoint58m_post
748    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
749       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
750    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
751       keep global_ocean.90x40x15 (for AD testing) with former secondary test
752       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
753    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
754        add MITgcm_tutorials (= code + all the tutorials)
755    o ecco, option to compute cost for total ssh (mean+anom)
756    o consistent with addition of ptracer and ssh in pkg/profiles
757    o profiles: adding ptracer and ssh
758    o testreport: change multi-test output-file name
759      (from output.txt.{name} to output.{name}.txt)
760    o profiles: now ok for mutli-tiles case
761    o seaice: add 4 parameters for different advection schemes for area,
762      (effective) seaice thickness, enthalphy, and snow height. Their default
763      is the standard parameter SEAICEadvScheme
764    o calc_gw:
765     - add cosFacU in zonal viscous flux (harmonic.visc.).
766     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
767       of tutorial_plume_on_slope.
768    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
769    o calc_gw: true flux-form, account for horizontal grid spacing.
770      update rotating_tank results, but not plume_on_slope (affected at
771      truncation level, 11 digits).
772    
773    checkpoint58l_post
774    o calc_gw:
775     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
776     - remove side-drag for now (need to fix it); update plume_on_slope results.
777     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
778    o commit code to make SST/SSS weights spatially variable
779      (based on either variable in-situ or variable initial T/S weights)
780    o pkg/ecco:
781      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
782        now based on horizontally varying weights wthetaLev, wsaltLev
783      * cost_averagesflags now returns year indices in addition to day, month
784      * sflux balance is performed on annual basis
785        (sflxumm, sfluxmm2, bal_sfluxmm)
786      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
787        including separate counting and multipliers
788    o pkg/rbcs
789      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
790    
791    checkpoint58k_post
792    o testreport:
793     - always build in dir. "build" (if not there, mkdir build instead of building
794       & running in input)
795     - run in dir run (if it exists), in build otherwise.
796     - call prepare_run (if input/prepare_run exists)
797     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
798    o pkg/exf modifications to interpolation and rotation routines for more
799       reasonable treatment of North Pole singularity: for tracers North Pole
800       value is set to northernmost zonal-mean value, for zonal velocity it is
801       set to zero, and for meridional velocity it is set to northernmost value.
802    o pkg/exf/exf_check_range.F
803     - add tile index to diagnostics and move stop statement to the very
804       end of the routine.
805    o pkg/diagnostics: (diagnostics_main_init.F)
806      define title of isomorphic variables according to the current config.
807    o pkg/thsice with pkg/seaice dynamics:
808    - fix domain of computation (interior only, required for exf) and do exchanges
809    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
810    o towards a standard way of dealing with multi-threading in MONITOR
811      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
812    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
813       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
814    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
815    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
816    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
817       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
818    o tracer advection:
819     - clean-up and simplify calc_common_factors.F
820     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
821       advection subroutine (but still not used within DST advection S/R)
822    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
823    
824    checkpoint58j_post
825    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
826      from file (collects calls previously in FORWARD_STEP)
827    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
828    o adjoint store dir. adjusted accordingly
829    o genmake2
830      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
831    
832    checkpoint58i_post
833    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
834      on wind stress (SEAICEstressFactor defaults to 1.)
835    o Total number of Timers is finite (<=40): comment out 2 non-essential one
836      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
837    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
838      on CS-grid: no longer loosing mass.
839    o exf & curvilinear-grid: no longer modify longitude xC & xG.
840    o pkg/ggl90: fix sloppy output and fix a bug
841    o pkg/seaice: added SEAICEuseEVPpickup parameter
842      - Set to false in order to start EVP solver with
843        non-EVP pickup files when using SEAICEuseEVP
844      - fix sign error in diffusion in seaice_calc_rhs
845    
846    checkpoint58h_post
847    * Modifications for bottom topography control
848      o replace hFacC by _hFacC at various places
849      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
850      o add non-self-adjoint cg2d_nsa
851      o update autodiff support routines
852      o re-initialise hfac after ctrl_depth_ini
853      o works for 5x5 box, doesnt work for global_ocean.90x40x15
854    * Adding verification for 5x5 box (4-layer) bottom topography control
855    
856    checkpoint58g_post
857    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
858       used for mean seasonal cycle, mean diurnal cycle); add an example
859       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
860    o pkg/ggl90:
861      - add parameter (minimum surface kinetic energy)
862      - fix bug (avoiding division by zero)
863    o couple pkg/thsice to pkg/seaice:
864      - modify advection in seaice to accomodate new scalar fields to be advected
865      - only muliDimAdection scheme work with seaice/thsice
866      - mapping of thsice-variables to seaice-variables, back and forth
867      - does not break the verification experiments, but does not give the
868        desired results either
869    o pkg/seaice
870      - make (default) second order advection a bit less confusing?
871    
872    checkpoint58f_post
873    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
874      to pkg/seaice):
875      - new routines thsice_map_exf and thsice_get_exf provide the interface
876      - add an additional formal parameter to thsice_solve4temp
877    o pkg/exf:
878      - add new fields wspeed, snowprecip (to be able to couple to thsice)
879      - correct Stefan-Boltzmann constant
880      - new parameter for longwave surface emittance
881      - separate some stuff from exf_bulkformulae into new routines  
882        exf_radiation, exf_wind
883      - add new parameters and constants: longwave emissivity for ocean, ice
884        and snow, evaporation parameters over ice
885      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
886        either wind from stress or stress from wind
887    o pkg/thSIce:
888    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
889    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
890       and THSICE_CALC_THICKN
891    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
892    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
893      to make debugging easier.
894    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
895    o pkg/bulk_force:
896      - clean-up comments and parameters ;
897      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
898    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
899      generate new output for test-experiment: aim.5l_cs.thSI
900    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
901      testreport accordingly
902    
903    checkpoint58e_post
904    o SEAICE_CGRID adjoint done
905    o R_STAR adjoint implemented.
906      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
907      * need to sort out init. of h0facc, etc.
908    o Make pkg/profile fully independent of ecco,cost, etc. stuff
909      to be able to use it in pure forward.
910    
911    checkpoint58d_post
912    o upgrade simple test-experiment to tutorial example:
913     step.1: duplicate the experiment and (step.2) will remove the old copy.
914      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
915      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
916      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
917      tutorial_global_oce_biogeo    <- copy of dic_example
918      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
919      tutorial_plume_on_slope       <- copy of plume_on_slope
920      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
921      tutorial_global_oce_optim     <- empty for now (David ?)
922      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
923     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
924    o correct a sign problem in cost_scat.F
925    o obcs and ptracers: fix boundary conditions for advections schemes
926      with larger stencil
927    o thsice adjoint: start
928    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
929      completeness
930    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
931      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
932    o ptracers adjoint:
933      * avoid extensive recomputatations
934      * fix missing re-init. of gptr (missed by TAF)
935    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
936      me to turn off the excessive output to STDOUT that this package produces
937    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
938      and add those terms in Vector-Invariant formulation.
939    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
940      if the control period (xx_hfluxperiod etc) is 0
941    o in profiles pkg, clean routines and fix details
942    o in ecco pkg, reading ssh data:
943      fix problem in case the model does not start at iter0=0
944    o fix mnc-pickup/restart for ptracers
945    o new package prifiles:
946      code to compute profile-based cost by Gael Forget
947      (modifs in ecco, ctrl, autodiff)
948    o Benign bug fix in initialization (spotted by M. Mazloff) of
949      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
950    
951    checkpoint58c_post
952    o adjoint: finish NLFS adjoint and provide reference output in
953      verification/global_ocean.90x40x15/results_ad_nlfs
954    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
955      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
956      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
957      with SEAICE_CGRID defined.
958    o move calendarDumps from "data" to "data.cal" and clean-up the code
959      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
960    o add useEXF & useCAL flags (for now, set in hard-coded way)
961    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
962      (were missing in NH mode, and wrong in quasihydrostatic mode).
963      waiting for Chris updated version of calc_gw to add those CALLs.
964    o fix bug in quasihydrostatic S/R ;
965      add a test for this option: global_ocean.90x40x15.qshyd
966    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
967      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
968    o add on/off flag useOffLine for package OFFLINE
969    o seaice:
970      - modify advection so that it works also on the C-grid
971      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
972        problem in multi-tile runs with C-grid
973      - add flags for clipping ice velocities and/or masking solver forcing
974      - fix drag (ocean on ice) formulation and a bug that caused noise in the
975        C-grid solver
976      - added a few comments to seaice_diffusion.F
977      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
978        are now exclusive)
979      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
980        required re-ordering the code a little:
981       + make DAIRN global variable (defined in SEAICE)
982       + move computation of the viscosities eta and zeta into a new separate
983         routine (because I need to recompute them in seaice_ocean_stress.F)
984    
985    checkpoint58b_post
986    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
987      update output.txt of exp. aim.5l_cs.thSI
988    o various mnc cleanups and improvements:
989      + shrink lookup tables by factor of ~4
990      + better error reporting when running out of lookup space
991      + able to handle longer path/file names (up to 500 chars)
992    o adjoint:
993      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
994      - TBD: "hidden" mom_vecinv recomp. in dynamics
995    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
996     (allow to differentiate between forcing components using new integer flags:
997      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
998     and add new flag to put Dissipation tendency out of Adams-Bashforth.
999    o ecco
1000      - enable trend removal from SSH anomaly obs.
1001    o adjoint
1002      - a fix for PmEpR when #undef EXACT_CONSERV
1003      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
1004      - try to fix "hidden" recomp. in forward_step for NLFS
1005        (NLFS seems broken sometimes after I checked it in)
1006    o seaice:
1007     - add c-grid version of the dynamic solver:
1008       + three new routines that are the c-grid substitute lsr, dynsolver
1009         and ostres
1010       + put a few fields that were local to dynsolver into global common
1011         blocks, so that I can move the computation of stresses etc into
1012         seaice_lsr (saves coding but may break the adjoint).
1013     - replace more hardwired parameters by runtime parameters
1014     - add ice masks that mask the rhs of the implicit solvers where there
1015       is no ice (commented out in seaice_dynsolver, because i am not sure
1016       if this works properly), eventually this should replace the clipping
1017       of ice velocities in seaice_dynsolver to +/-40cm/s.
1018    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
1019      include it only where its needed
1020    o move balancing of fluxes before the call of external_forcing_surf
1021    o seaice:
1022      - correct units of turning angles (now they are really in degrees)
1023      - move computation of GWATX/Y out of main routine into dynsolver
1024      - initialize GWATX/Y in seaice_init
1025    o Apply mask on Fresh-Water flux (needed for SSH forcing).
1026      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
1027    o seaice: add runtime flags for turning angles (default to zero)
1028    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
1029      and trend from exf forcing and ctrl control adjustments
1030    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
1031      (since checkpoint57x_post)
1032    o change the default rotation period to 86164.s = the Earth rotation
1033    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
1034      and based on a reference stratification. Tested within hs94.cs-32x32x5.
1035    o seaice advection: add code for choosing between the default (2nd order
1036      central differences) and multiDim advection schemes provided by
1037      pkg/generic_advdiff
1038    o seaice:
1039      - removed all references to SEAICE_GRID.h fields from
1040        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
1041        (cubed-sphere configuration will change a little)
1042      - grid computations in seaice_init are obsolete now.
1043      - cleaned up code a little so that is easier to read (hopefully).
1044      - added new (better?) discretizations of default advection and diffusion
1045        (turn on with SEAICEuseFluxForm)
1046      - replace 1 in 3d global fields by kSurface in growth.F
1047      
1048    checkpoint58a_post
1049    o seaice:
1050      - bug fix in advect.F
1051    o shelfice:
1052      - separate shelfice load anomaly from pload (breaks with time
1053        dependent forcing), => introduce constant field shelficeLoadAnomaly.
1054        Its default is 0., but it may be computed more cleverly from (unknown)
1055        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
1056        done offline. A good approximation of the pressure load anomaly is
1057        necessary to avoid large initial adjustment processes underneath
1058        deep-reaching shelfice.
1059      - small fix in ISOMIP shelfice_thermodynamics
1060      - add more sophisticated thermodynamics of Hellmer (1989), this is
1061        now the default
1062      - give a few constants more intuitive names
1063    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
1064      if bulk formulae are used in long integration (especially EmPmR). Turn
1065      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
1066      if balancePrintMean, the imbalance that is substracted is printed to
1067      STDOUT.
1068    o fix bug (typo) in obcs_apply_eta.F
1069    o add a new package shelfice which enables us to model the circulation
1070      underneath shelf-ice with draughts of hundreds of meters.
1071     - works
1072     - to do: + include improved thermodynamics
1073              + check whether kSurfC (from model/inc/SURFACE.h) can be used
1074                instead of new field kTopC
1075              + can we use topoFile, Ro_surf and existing code in ini_depth.F
1076                instead of new field R_shelfIce and new code in ini_depth.F
1077                and ini_mask_etc.F?
1078              + adjust vertical mixing schemes?
1079    o seaice pkg:
1080     - add a cpp-flag to include a simple formula for a salinity dependent
1081       freezing point of sea water at the surface
1082     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
1083       meridional stresses are now different (and hopefully correct)
1084    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
1085       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
1086       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
1087    o pkg/diagnostics: add options and parameters for regional-statistics
1088       diagnostics ; define regions by reading a region-mask from a file
1089       (might add other options later)
1090    o pkg/bulk_force:
1091     - add option and parameters to use AIM surface-flux formulae.
1092     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
1093       others forcing fields (defined in PARM05, parameter file "data") are loaded
1094       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
1095     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
1096     - use the right EXCH call for uwind,vwind (to work on CS-grid).
1097     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
1098       and parameters (note: calcWindStress replaces .NOT.readwindstress).
1099     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
1100    
1101    checkpoint58
1102    o add "--embed-source" option to genmake2 which, when the supporting
1103      tools can be compiled (as determined by genmake2) will turn on the
1104      embed_files package which then embeds the entire MITgcm source code
1105      (*.[fFhc] + Makefile) used for the build within the executable
1106      - requested by CNH but off by default
1107      - adds a paltry <9MB to the mitgcmuv executable in most cases
1108      - only writes the output when useEMBEDSRC in eedata is true
1109    o clean up 3-dim. relaxation codes:
1110      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
1111      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
1112      * Thanks to Tom Haine for testing!
1113    
1114    checkpoint57z_post
1115    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
1116      affects output (@ truncation level) of exp. plume_on_slope ; updated.
1117    o fix the pickup behavior for obcs in combination with ptracers
1118    o fix a bug in ptracers_external_fields_load
1119    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
1120      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
1121    o transfered surface NH pressure to eta field (if exactConserv).
1122    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
1123         and update lab_sea output.txt file.
1124    o completing 3-dim. relaxation code: additional term
1125         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
1126      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
1127      * At compile time, in "EXF_OPTIONS.h" set
1128          #define  ALLOW_CLIMTEMP_RELAXATION
1129          #define  ALLOW_CLIMSALT_RELAXATION
1130      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
1131          tauThetaClimRelax3Dim = 15552000.0,
1132          tauSaltClimRelax3Dim  = 15552000.0,
1133      * 3 cases:
1134          1) Use a constant-in-time 3-dim. field
1135          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
1136          3) Real-time relax. to time-evolving prescribed field
1137    o Adding Laplacian-type smoothness constraint on
1138      initial and boundary (forcing) controls (ic, bc)
1139      * enable at compile-time via
1140        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
1141      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
1142      * Absolute scale somewhat unclear so far
1143      * no area weighting was included since no other cost term does so far
1144    
1145    checkpoint57y_post
1146    First step for a NLFS adjoint
1147    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
1148    o new init. routines for calc_r_star, calc_surf_dr
1149    o still need to deal with ini_masks_etc
1150    o testreport seemed happy
1151    checkpoint57y_pre
1152    
1153    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
1154    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
1155    o add new offset feature to offline pkg (plus minor cleanup)
1156    o cfc fixes for final year of integration
1157    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
1158      be in GCHEM_OPTIONS).
1159    
1160    checkpoint57x_post
1161    o fix testreport Pb in multiple test experiment.
1162    o cleanup our namelist syntax in verification:
1163      - make it more F95 standards compliant (some work still needed)
1164      - allows the vast majority of our tests to work with gfortran
1165    o Non-Hydrostatic:
1166     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
1167     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
1168    o Allow to apply AB on T,S rather than on AB(gT,gS):
1169     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
1170     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
1171       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
1172     - need a "clever" read_pickup to restart from the other AB formulation
1173    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
1174    o remove some unused variables (reduces number of compiler warnings)
1175    o adjoint
1176      * Disable useVariableViscosity for adjoint for time being
1177        (there are a number of extensive recomputations)
1178      * Initialize certain variables needed for adjoint
1179    
1180    checkpoint57w_post
1181    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
1182                 fix the singleCpuIO RS version of MDSWRITEFIELD
1183       and add a WARNING if using globalFiles=T with multi-processors.
1184    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
1185      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
1186    o tracer advection scheme:
1187      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
1188       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
1189       was not very convenient).
1190      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
1191       (further tests needed for the implicit DST & Flux-Limiter schemes).
1192    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
1193      and sRef for convenience, handy, when you want to initialize
1194      ptracers in a large domain with a constant non-zero value. Also,
1195      untangle ptracers_init.F a little.
1196    
1197    checkpoint57v_post
1198    o change dome exp. to use variable viscosity in side-drag terms.
1199    o remove all the files from the cfc_offline test since they are now
1200      incorporated into tutorial_cfc_offline which has been producing
1201      identical results for a few days of testing
1202    o add new parameter: sideDragFactor to enable half-slip-side BC
1203      and change side-drag S/R to use viscosity from mom_calc_visc
1204      (can switch back by setting sideDragFactor=0.); affects results at
1205      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
1206       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
1207    o vorticity & strain are now computed without masking, to account for
1208      no-slip-side BC in variable viscosity calculation ; mask is applied
1209      anyway later on, before computing advection/coriolis terms.
1210    o modify exp4 to test new obcs support for reading from external files
1211      and for passive tracers
1212    o fix behavior of ptracers_monitor when monitor output is written to a
1213      netcdf-file; still not independent of monitor.F (writes in the same
1214      file).
1215    o change default value of tRef (put a uniform, meaningful value for ocean
1216      & atmos) and initialize sRef (was missing, as Martin mentioned).
1217    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
1218      to be proportional to enstrophy dissipation length.  Thus,
1219       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
1220      This is now consistent with Smagorinsky and with the manual.
1221    
1222    checkpoint57u_post
1223    o OBCS and PTRACERS: add open boundary support for passive tracers
1224      - either use homogenous (pseudo) v.Neumann conditions or prescribe
1225        OB-values from file; this is not different from the way theta and salinity
1226        are treated
1227      - however, Orlanski-radiation conditions are not supported, and the model
1228        will stop if you use pTracers and Orlanski at the same time.
1229      - beefed up the rountine obcs_external_fields_load: now only those open
1230        boundary values are overwritten with values from files for which there
1231        are really files, otherwise the OB-fields remain untouched. This makes
1232        it possible to use different OBs at different ends of the domain (as
1233        with EXF)
1234    o reduce number of exch calls in shap_filt (s2).
1235    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
1236      truncation level) 4/5 MLAdjust test results (11&12 digits match).
1237    
1238    checkpoint57t_post
1239    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
1240    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
1241      same truncation, independent of the face number: affects affects several
1242      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
1243    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
1244      note that biharmonic viscosity + no-slip was not tested in any experiment.
1245    o fix bug in non-linear free-surf side-drag ; generate new output for
1246      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
1247    o make mnc honor the writeBinaryPrec flag for most kinds of output
1248    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
1249    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
1250      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
1251    o add brackets in multi-terms sum to get same truncation, independent of
1252      the face number (manage to get exactly same value of gU,gV at the cs-edge)
1253      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
1254    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
1255      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
1256      a maximum grid-scale Reynolds number.  Also, changes all length calculations
1257      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
1258      Suggested values of viscosity parameters found in mom_calc_visc.
1259      Many new viscosity diagnostics available.
1260    
1261    checkpoint57s_post
1262    o Add clearing-house for viscosity calculations, mom_calc_visc and
1263      correct numerous bugs in LeithD and Smagorinsky discretizations.  
1264      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
1265      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
1266      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
1267      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
1268      The Strain-Tension form is now called with useStrainTensonVisc=.true.
1269      ViscAhStrain and viscAhTension are now retired.
1270    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
1271    o In response to JMC's bug report, genmake2 now ignores any soft-links
1272      that it finds in the *current* directory when searching for files.
1273      Soft-links found in any other source directories will still work as
1274      they did before.
1275    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
1276      a C routine to unlimit the stack size
1277    o mnc-ify pkg/aim snapshot vars
1278    o mnc-ify pkg/land as requested by Daniel
1279    o various changes to mnc including:
1280      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
1281      - output can now be grouped so that all files within a group
1282          change the ITER portion of their names in lock-step together
1283      - can now read ("global") PER-FACE (in addition to PER-TILE) files
1284          and works with both EXCH1 and EXCH2 (but needs more testing)
1285      - writing works for all verification test cases w/ g77 on Linux
1286    
1287    checkpoint57r_post
1288    o make MNC variable initialization happen earlier
1289    o add diagnostics for (almost) each term of the momentum Eq.
1290    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
1291    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
1292    o remove MINIMAL_TAVE_OUTPUT option ;
1293      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
1294    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
1295      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
1296    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
1297    o add time-dependent SST, SSS control
1298    o cost terms in ecco/ modularized (new cost_generic.F)
1299    o cost_averages routines are modularized (new cost_averagesgeneric.F)
1300    o new infrastructure for seaice model vs. obs misfits in seaice/
1301      * driver from the_main_loop.F is seaice_cost_driver.F
1302      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
1303      * gradient check in Exp. 6a of natl_box_adjoint/
1304    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
1305      (see README file)
1306    
1307    checkpoint57q_post
1308    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
1309    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
1310      - bug was reported by Jean-Michel and Ian Fenty
1311    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
1312      update exp. cpl_aim+ocn output.
1313    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
1314      Needed for high-res. runs with large global files
1315      to be able to limit tapelev size
1316    o Changed some tests for adjoint:
1317      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
1318      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
1319      * global_ocean.90x40x15/ back to default 3-level checkpointing
1320    o Modifications to enable scripted COMMON to MODULE conversion
1321      * verification/OpenAD/code/ has necessary scripts and description;
1322      * converts, compiles and runs successfully;
1323    
1324    checkpoint57p_post
1325    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
1326    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
1327      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
1328    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
1329    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
1330      (was already the case for dissipation with mom_vecinv,
1331       and also the case for grad.PhiHyd when staggered-timeStep)
1332      This will allow to put dissipation out-off the AB time-stepping.
1333     Unfortunately, affects truncation error. Update output of exp. that "fails"
1334      (cg2d matching number) and leave the others for later: front_relax(10),
1335      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
1336      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
1337    
1338    checkpoint57o_post
1339    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
1340      (2) its ready to be documented during the 20050801 DocFest
1341    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
1342      for ideal_2D_oce and lab_sea on linux_ia32_g77
1343    o set to #undef CTRL_SET_OLD_MAXCVARS_30
1344      in global1x1_tot/code_seaice_adj to access indices 32, 33
1345      (worth another tag)
1346    
1347    checkpoint57n_post
1348    o adding precip control xx_precip 32
1349    o adding swflux control xx_swflux 33
1350    o Replacing 10 forcing penalty cost routines by 1 generic.
1351    o Implementing partitioning in time-mean and variable adjustment
1352      for atmos. state.
1353    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
1354  o in natl_box_adjoint:  o in natl_box_adjoint:
1355    * updated: results_bulk/    * updated exp 1 to 10
1356    * not yet updated: results/, results_seaice/      (but does not have time-mean vs. variable split results yet)
1357    o updated global1x1/*_seaice_adj/
1358      to incorporate latest changes
1359    o enable useSingleCpuIO for mdsio vector routines
1360      (applies in particular to tapelev I/O)
1361    o removed inefficient K-loop in all active_file*control*.F
1362    
1363  checkpoint57m_post  checkpoint57m_post
1364  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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