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revision 1.125 by jmc, Mon Jan 27 21:42:19 2003 UTC revision 1.934 by jmc, Tue Jan 8 23:33:59 2008 UTC
# Line 1  Line 1 
1  $Header$  $Header$
2    $Name$
3    
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    o gad_som : fix flux output (& diagnostics) to have same units as other
8      advection scheme fluxes (was previously multiplied by deltaT).
9    o added verification/seaice_obcs both to test seaice open boundaries
10      and to provide an example matlab scrpt for generating them
11    o added verification/lab_sea/input.salt_plume for testing pkg/salt_plume
12    o pkg/salt_plume: clean up salt_plume_frac.F to
13      remove redundancy in PlumeMethod 1 and 4
14    o pkg/kpp: added saltplume diagnostics
15    o pkg/obcs and pkg/seaice:
16      - do not set uice and vice to zero when OB*icefile are unspecified
17      - OBCS_SEAICE_AVOID_CONVERGENCE is undefined by default
18      - moved seaice tracer obcs after call to seaice_growth
19    o pkg/salt_plume: added various options for salt plume depth
20      criterion and for vertical distribution of the salt
21    
22    checkpoint59l
23    o pkg/ptracers: new version of ptracers pickup:
24      read meta file and write only fields which are needed to restart.
25      ( same logic as main pickup file ; also using pickupStrictlyMatch )
26    o pkg/seaice:
27      - add timescale for melting due to warm mixed layer as a means of
28        setting SEAICE_availHeatFrac more conveniently
29      - add a CPP-flag/runtime parameter check for flooding algorithm
30      - reformulated availHeat in seaice_growth.F to be independent of AREA
31    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
32      unit changes
33    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
34    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
35      SX vector computer.
36    o pkg/seaice:
37      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
38        seaice forcing fields can now be read only through pkg/exf
39      - removed some unused halos
40    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
41    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
42      or U/VICE from U/VWIND before computing U/VSTRESS
43    
44    checkpoint59k
45    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
46      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
47    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
48      all experiments pass when compile with un-initialised var. checking option.
49    o added pkg/salt_plume
50    o script to test restart (for now, in MITgcm_contrib/jmc_script)
51    o pkg/seaice: new read/write pickup version.
52      read meta file and write only fields which are needed to restart.
53      ( same logic as main pickup file ; also using pickupStrictlyMatch )
54    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
55    o lab_sea.hb87: modify the domain & update output.hb87.txt :
56      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
57      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
58      process. Fixed here by closing the domain at the Northern boundary.
59    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
60    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
61      a set of consecutive levels in/from a 3-D array.
62    o pkg/ptracers:
63      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
64      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
65    
66    checkpoint59j
67    o in pkgs: dic, obcs, offline, rbcs:
68      standard way to compute coeff. for time interpolation between 2 time reccords
69      which retains full precision (& make results less dependent on compiler).
70      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
71    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
72      packages instead of reading ice cover and wind speed separately
73    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
74     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
75      to allow to compile customized code before the update)
76    o cleaning-up:
77      - fix CPP instruction syntax in pkg/obcs
78      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
79        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
80      - fix some threads issue in IO parts.
81    o pkg/dic:
82      - add tons of "_d 0" (--> much better testreports !)
83       and then update outputs of tutorial_global_oce_biogeo
84    o pkg/mom_fluxform:
85      add a special version of momentum advection intended to conserve momentum
86      next to a bathymetry step or a coastline edge. (default = off = #undef)
87    o new read/write pickup version:
88      - for now, only implemented for main (mdsio) pickup file.
89      - write out only what is needed to restart; merge pickup_nh , pickup_ph
90        and main pickup together.
91      - read meta file; read only what is needed to restart; stop if a field
92        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
93        if it make sense (even if the restart is not perfect).
94      - if no meta file, assume that pickup to read corresponds exactly to
95        a pickup that would currently be written.
96      - read pickup written in the old format (until checkpoint59i) if it
97        recognizes an old meta file (no field-list).
98      - add a meta file in exp. which starts from a pickup: 2 cases:
99        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
100         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
101        b) a meta file describing the content of the associated pickup file
102         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
103    o pkg/mdsio & pkg/rw:
104      - new routine to read a meta file ; new set of routine to read
105        Multiple-fields file (with meta file).
106    o added open boundary conditions capability for seaice
107        HSNOW, HSALT, UICE, and VICE
108    
109    checkpoint59i
110    o adjoint:
111      * fix multiDimAdvection adjoint
112        (partial recomputation problem by TAF for fVerT(:,:,kDown)
113        and comlev1 size definition (maxpass vs. max. number of tracers)
114      * verification/global_ocean.90x45x15 adjoint now tests
115        NLFS and multiDimAdvection using DST3 (=30)
116      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
117    o pkg/kpp: add "_d 0" to real constant (if missing);
118      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
119      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
120    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
121      for internal parameters related to restart process (formerly from PARAMS.h)
122      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
123    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
124      as argument. (only atm2d & obcs write_pickup have not yet been updated)
125    o pkg/monitor:
126      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
127      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
128      - account for deep Atmosphere factor and density factor (anelastic)
129    o added open boundary conditions capability for seaice HEFF and AREA
130    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
131      thermodynamics
132      - requires a little reorganization, which affects the testreport results
133        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
134        so that now the conservative form is tested
135      - add a few comments
136    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
137    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
138    o add new diagnostics to seaice: advective, diffusive fluxes (only for
139      multidim-advection, for scheme 2 they are not filled) and transports,
140      thermodynamic growth rates
141    o change units of EmPmR (inside the code, + within coupling interface)
142      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
143      Affects results @ truncation level (cg2d match) and update output of
144       experiments: lab_sea(6), global_ocean.90x40x15(10),
145      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
146      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
147      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
148      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
149    
150    checkpoint59h
151    o pkg/exf:
152      - improve vectorization by moving if-statement out of loops in
153        exf_mapfields, exf_radiation
154      - exf_bulkformulae.F: introduce 2D fields and vectorize code
155    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
156    o testreport:
157      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
158        monitor & update offline_exf_seaice exp. output.
159      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
160    o pkg/seaice:
161      - bug fix in the evp solver: boundary conditions were affected be
162        masking of zMax/zMin (changes results)
163      - minor bug fix in boundary conditions in seaice_calc_strainrates
164        (changes results for no_slip)
165      - seaice_lsr.F: make interpolation of eta dependent on boundaries
166      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
167      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
168        stress formulation and no-slip boundary conditions
169    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
170      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
171    o pkg/seaice: a first HSALT time stepping equation has been checked in
172    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
173      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
174      without requiring DO-IF statements
175    o pkg/thsice:
176      use continuous power-law function for partition of energy between lateral
177      melting/freezing and thinning/thickening ; old code using step function
178      still available with #undef THSICE_FRACEN_POWERLAW
179      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
180    o testreport: change AD testing : check against results/output_adm.txt
181      using same scripts as for forward test.
182    
183    checkpoint59g
184    o adjoint testing: in preparation for changing testreport:
185      - output format: cost and grad written on separated lines
186      - ad output results in directory "results" (instead of "results_ad")
187    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
188    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
189    o pkg/ecco: allow user defined cost function contributions
190    o testreport:
191      Allow to choose (per experiment) the list of tested output variables
192       and the main variable (used to issue a pass/FAIL ) ;
193      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
194      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
195      Also modify printing of summary:
196       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
197       b) echo the list of tested variables in the individual summary.txt of
198          each experiment.
199    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
200      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
201      (but still depend on the tile decompostion of the domain).
202    o pkg/seaice: change a discretization detail to make the B-grid code
203      "more symmetric". This change is likely to remove all "ridges/leads" that
204      where quasi-aligned with the grid in B-grid solutions. It may also be
205      the solution to the stress coupling issues with the B-grid.
206    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
207      remove .cvsignore from input dir. (since testreport no longer run here).
208    o pkg/thsice:
209     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
210     - fix reshaping of sea-ice just after advection:
211       melt all the ice only if ice-volume is too small.
212     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
213       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
214     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
215    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
216      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
217    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
218      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
219      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
220      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
221      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
222      -> update output.txt
223    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
224     this affects truncation error: -> update output.txt of exp:
225      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
226      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
227    
228    checkpoint59f
229    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
230    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
231      a bounded range (in forward mode)
232    o pkg/ecco, ctrl, autodiff and mom_common:
233     internal parameter controls, completements of implementations
234    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
235    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
236      (not seem any difference in testing results).
237    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
238       at face corners.
239    o pkg/generic_advdiff:
240     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
241      loop range indices for computing vertical advection tendency
242      and do the calculation in the interior only (no overlap) ;
243      for now, only implemented for SOM advection (to save CPU time).
244     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
245    o exch2 adjoint
246      First set of changes:
247      - add exch2 hand-written adjoint templates
248      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
249        This will require cleanup in pkg/autodiff/*.F
250        (changed routines currently kept separate in verif. code/)
251      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
252        that used to hide exch2 or cubed-sphere specific code
253        (commented via 'cph-exch2')
254    o pkg/seaice
255      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
256    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
257       output of global_ocean.cs32x15.thsice .
258    
259    checkpoint59e
260    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
261      for B-grid vector (not yet tested) and C-grid vector (<- only used
262      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
263    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
264      (#ifdef ALLOW_SALT_PLUME)
265    o gather_2d/scatter_2d: removed halo regions
266    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
267      scheme and the corresponding test case (under front_relax dir). For now,
268      only available with Skew-flux form and not yet tested in realistic set-up.
269      adjoint: store directives updated, but gradient checks deteriorated,
270      so maybe GM/Redi adjoint is now broken.
271    o seaice adjoint
272      * add AREA, HEFF, HSNOW as control variable
273        (should not change lab_sea results)
274      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
275    o pkg/seaice:
276      * added computation of saltFlux in seaice_growth;
277        For time being, sea ice salinity is assumed constant
278        contribution of snow flooding to freshening of sea ice is neglected.
279        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
280        defaults to 0.0 in order to maintain backward compatibility.
281        Typical values for SEAICE_salinity are 4 to 10 g/kg.
282      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
283      * added SEAICE_availHeatFrac, which specifies fraction of surface level
284        heat content used to melt or grow ice
285      * commented out cap of HICE: it helps keep ice thinner
286      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
287      * applied OBCS T/S mask to HEFFM sea ice mask
288    
289    checkpoint59d
290    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
291     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
292     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
293    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
294     and change default value of parameter "GM_Small_Number";
295     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
296       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
297       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
298    o pkg/ecco: cost function when applying pkg/smooth to controls
299    o pkg/ctrl: add forcingPrecond run time parameter
300    o pkg/seaice:
301     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
302     - fix bug in metric terms of u-equation in LSR solver (implicit part),
303       changes verification/lab_sea
304     - rearrange implicit part of u-equation in LSR solver to make it easier to
305       read, understand, and debug. This causes changes at the truncation level.
306     - fix (serious) bug in the boundary conditions (sign error in the implicit
307       part) of the LSR solver. Changes all LSR results.
308     - fixed problem with HSNOW initialization to avoid thick snow when AREA
309       is initilized with small values - does not change lab_sea results.
310     - added HsnowFile initialization capability
311    o pkg/smooth: addition to model/src and pkg/ctrl so allow
312     initialization of pkg/smooth and application to control vector
313    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
314    o dependencies: pkg/profiles requires pkg/cal
315    o pkg/profiles:
316     - added option ALLOW_PROFILES_GENERICGRID
317         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
318         that interpolation information (grid points and coefficients) is provided
319         within the netcdf input files.
320         -> sample matlab scripts can be found in MITgcm_contrib/gael
321         that allow you to prepare netcdf input files.
322     - also modified: cleaner include statements, cleaner error print statements,
323       cleaner stops when error, and more tests of the netcdf input files consistency.
324    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
325    o pkg/seaice:
326     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
327       requires a new routine: seaice_diagnostics_fill.F
328     - make sure that seaice does not move if not forced (pressure replacement
329       method, Hibler and Ip, 1995), changes results
330     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
331     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
332       It is turned off by default (=-1.), because it changes the results.
333     - make it possible to read AREA from a file, too.
334    
335    checkpoint59c
336    o add S/R and diagnostics for oceanic mixed-layer depth
337    o move GMRedi call after all vertical mixing schemes (including KPP)
338    o pkg/thsice:
339     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
340      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
341    o pkg/obcs:
342     - bug fix for balance code
343    o pkg/seaice:
344      - allow values of SEAICE_elasticParm > 1
345      - add new parameter SEAICE_evpTauRelax as an alternative
346        to SEAICE_elasticParm
347      - make lsr boundary conditions free slip (by default), changes result
348      - add code for no slip boundary conditions for lsr
349      - set minimum of zeta to zero (and not 4e8) (changes results)
350      - add a cap on AREA after advecting AREA if seaice_growth is not called
351    o change calculation of Visbeck K:
352      - no longer depend on tapering scheme; instead, compute slope (limited
353        by GM_maxSlope). this is equivalent to what was comuted before with
354        clipping or linear tappering.
355      - fix vertical averaging (wrong by 1/2 level)
356      - leave the old version (but will not be maintained) within
357        #ifdef OLD_VISBECK_CALC / #endif
358      - update output of exp. ideal_2D_oce
359    o change error catch in calc_r_star to improve vectorization
360    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
361      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
362    o adjoint:
363      Re-organized adjoint checkpointing according to Matt Mazloff
364      (but with modifs/completions/cleanups)
365      Storing is now bundled into large arrays to optimized I/O
366      (and second step in cleanup of the_main_loop)
367    
368    checkpoint59b
369    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
370      - export/import (between ocean & coupler) fields needed for ocean DIC.
371    o pkg/seaice:
372      - get rid of three more exchanges seaice_calc_viscosities (required
373        different loop boundaries in seaice_lsr and seaice_ocean_stress)
374      - bug fix in seaice_ocean_stress (update of lab_sea required)
375      - reduce loop boundaries to necessary minimum also in seaice_evp
376      - go back to the old way of computing deltaC/Z as the adjoint likes that
377        better
378    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
379      passive tracer to an Age Tracer) + update output.txt
380    o pkg/exf:
381      - implement A-grid / C-grid selection for wind-stress input files.
382      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
383      for now, in exf_bulk_largeyeager04.F only :
384      - change implementation for case where windspeed + 2. components wind-stress
385        are read-in. AND use rhoConstFresh to convert evap.
386    o pkg/seaice:
387      - use correct EXCH_UV for wind-forcing (on A-grid).
388      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
389        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
390    o pkg/exf:
391      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
392      EXF_INTERPOLATION:
393      - merge global_with_exf/code version of exf_interp_read.F
394        to the main code ;
395      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
396        reading the file ; Important: This options needs to be defined to recover
397        previous code.
398        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
399      - no longer loose real*8 precision along the way when using exf_iprec=64.
400    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
401      - change discretisation of evp-solver in order to avoid another exchange
402        (changes lab_sea) and clean up a little
403      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
404        help the adjoint (this also changes the results slightly)
405      - add a few "_d 0" where they had been missing in seaice_evp.F
406      - cleaning up: remove unused seaice_calc_rhs.F
407    o pkg/exf: some cleaning-up:
408      - change various "constants" into runtime parameters
409      - cleaned-up Large&Yeager04 routine which should eventually
410        replace exf_bulkformulae.F (changed names of S/R and CPP)
411        and merged various ALLOW_ATM_WIND options
412     only used with thsice pkg (in thsice_get_exf.F):
413      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
414        which are used when useStabilityFct_overIce=TRUE (= the default)
415      - change default values of ice & snow emissivity and scale downward LW
416        by ice & snow emissivity.
417    o pkg/thsice:
418     fix few little problems, in thsice_calc_thickn.F:
419      - growth vertically (and not laterally) if iceFrac == iceMaskMax
420      - melt only laterally if hIce < hThinIce (as the comments say)
421      and in thsice_extend.F:
422      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
423      - start to form ice as soon as the minimum ice-volume is reachable.
424     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
425      and cpl_aim+ocn
426    o pkg/kpp
427     - move computation of surface related input fields to KPP into a new
428       subroutine kpp_forcing_surf.F
429     - remove wrong (within bi,bj loops) EXCH calls.
430     - little cleaning (add argument myThid in last position, cvs header ...)
431     - for now, fix conservation problem by exchanging KPPviscAz (may not
432       be the best fix)
433    o pkg/seaice
434     - check for inconsistent evp parameter/cpp-flag combination
435     - remove leftover errIO flat for obsolete name list error handling
436    o OpenAD
437     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
438    
439    checkpoint59a
440    o pkg/seaice: some parameter clarifications and a little bit of clean up
441    o pkg/thsice: rename run-time parameters:
442       himin       -> hIceMin
443       himin0      -> hThinIce
444       hihig       -> hThickIce
445       i0          -> i0swFrac
446       transCoef   -> bMeltCoef
447       frac_energy -> fracMelting
448      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
449       with default values (for now) that do not change the results.
450      remove old version of thsice vars advection in pkg/seaice.
451    o in FFIELDS.h:
452      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
453      - make pLoad & sIceLoad always available (but still only used if
454         ATMOSPHERIC_LOADING is #define).
455    o pkg/kpp: replaced _KPP_RL with _RL
456    o bug fixes for vertical diffusivity computations when both KPP and
457        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
458        are no longer updating the vertical diffusivity array
459        (passed as argument) but are (re-) setting those arrays.
460    o pkg/seaice: fix bug in evp solver, while doing that
461      - change (improve?) discretization of stress computations for both
462        cgrid-lsr and evp solver
463      - add a new routine to compute strain rates
464      - the above changes lab_sea results
465      - add no slip conditions for evp solver (off by default), lsr-version
466        may follow
467      - fix exchange for shear at Z-points (does not change lab_sea)
468      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
469        (to force the user to pick a time step since there is not "safe" way
470        of choosing it)
471      - add principal stress diagnostics
472      - rearrange fields for evp a little to avoid having to call a: too many
473        exchanges and b: exchanges for stress trensor components which we do
474        not have.
475      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
476        of evp, complete rewrite for lsr case (latter is does not yet work
477        in all cases)
478    o pkg/kpp: add code to have mixing in shelf ice caverns
479      - add myThid to all kpp routines (long overdue)
480    
481    checkpoint59
482    o pkg/exf:
483      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
484        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
485      - move exf header files from lower_case.h to UPPER_CASE.h ;
486        add missing cvs Header & Name
487      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
488      - add namelist param. selectStressGridPosition, exf_monFreq
489      - retire many _CLIM routines, and remove data.exf_clim
490        + params moved to data.exf
491        + climsst, climsss now handled by exf_set_gen, i.e.
492          climss?period=0 refers to constant field,
493          climss?period=-12 to monthly forcing
494      - split up namelists in data.exf
495    o pkg/seaice:
496      - remove seaice_exch and seaice_exch_uv
497      - remove superfluous exchange of theta
498      - add myThid to seaice_budget_ocean/ice
499      - add new interface for atmospheric wind forcing (C-grid only)
500        + new routine
501        + two new field (taux, tauy for stress over ice)
502        + removed one global field (DAIRN) for C-grid case only
503    o pkg/thsise
504      - 2nd set of modifs for thsice adjoint in conjunction with exf
505    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
506    
507    checkpoint58y_post
508    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
509      vertical diffusivity, similar to that in MOM4; turned on using
510      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
511      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
512    o Added capability for 3D specification of background vertical diffusion
513      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
514      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
515      "data" file that contains the 3D vertical diffusivity coefficients.
516    o ice dynamics (pkg/seaice) with thsice thermodynamics:
517      - add code within pkg thsice to advect & diffuse sea-ice fields
518      similar to (and will replace) what has been added in  seaice_advdiff.F,
519      but: - conserving Mass, Heat & Salt.
520           - better when using non-linear advection scheme (not yet fully tested)
521           - can also be used in atmospheric set-up (for now, only the diffusion).
522    
523    checkpoint58x_post
524    o IO option for global-file compact format:
525      - add options when generating topology (utils/exch2/matlab-topology-generator)
526      - add I/O capability (pkg/mdsio).
527      - adapt utils/matlab/rdmds.m to read this format.
528      for now long-line format not yet supported by pkg/mdsio (& exch2).
529    o shelfice: add a few diagnostics
530    
531    checkpoint58w_post
532    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
533      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
534      (and replace horiVertRatio in NH code).
535      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
536                         and tutorial_plume_on_slope (sensitive to truncation)
537    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
538      directly to drive seaice model (C-grid only)
539    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
540     - reintroduce computation of wind from stress,
541     - compute tau (in exf_bulkformulae.F) from windstress averaged to
542       mass points to avoid tau = 0
543     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
544    o rdmnc.m: make it work with "global" files created with gluemnc
545    o rdmnc.m : some improvements in dealing with singleton dimension
546      (tested on all testreport mnc output files).
547    o genmake2: disable pkg/profiles if netcdf test fails.
548    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
549    o move call to cal_readparms up to make calendar parameters/variable available
550      to all packages
551    
552    checkpoint58v_post
553    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
554      useDynP_inEos_Zc tested.
555    o pkg/exf: changes to properly interpolate/mask/scale initial fields
556    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
557      and portions thereof.  See read_cs.txt for description and examples.
558    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
559      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
560      following the great-circle arc between those 2 points.
561    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
562      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
563    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
564     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
565     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
566     - still needs work (not working with some options ; efficiency to improve)
567       and serious testing.
568     - use this scheme for temperature & salinity in 2 advection test exp.:
569       advect_xy & advect_xz, respectively.
570    
571    checkpoint58u_post
572    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
573    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
574    o testreport: add option "-skipdir" to skip some test.
575    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
576      momentum calculation.
577    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
578    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
579      remove checkpoint.F and the_correction_step.F (no longer used);
580      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
581    o add option (linFSConserveTr) to correct for tracer source/sink due to
582      Linear Free surface
583    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
584    o pkg/thsice: fix reading mnc-pickups
585    
586    checkpoint58t_post
587    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
588    o pkg/mdsio:
589     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
590       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
591       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
592     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
593     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
594       either MDS_READ_FIELD or MDS_WRITE_FIELD )
595     - new S/R (to replace MDSWRITEMETA), which allows to write more
596       informations (variable names, time ...) to meta files.
597     - modify rdmds.m to give back the meta file content.
598    o pkg/diagnostics: change vertical interpolation to be safer, and more
599       flexible (define p-levels to interpolate to in data.diagnostics);
600      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
601       diagnostic pointer.
602    o pkg/seaice: more cleaning up of seaice_growth, added many comments
603    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
604    o fix multi-category seaice:
605     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
606       SEAICE_MULTICATEGORY
607     - fix short wave heat flux
608    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
609       and allow to use EVP solver. Change forward lab_sea: test both EVP
610       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
611    o Initial check-in of lab_sea adjoint
612      (very similar to natl_box_adjoint/code_seaice)
613      * used C-grid and EVP solver
614      * used KPP, GM/Redi
615      * uses inAdExact=.TRUE.
616      * gradient checks fail for both ADM and TLM
617        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
618        f.d. gradients actually seem more problematic than ADM, TLM gradients;
619        issue is related to forward mismatch between g77 an ifort
620    o pkg/seaice: overhaul of thermodynamics
621     - growth.F and groatb.F are replaced by new routine seaice_growth.F
622     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
623     - move a few global fields out of SEAICE.h into seaice_growth.F and
624       make them 2D (FICE/QNETO/ ...)
625     - remove FO (it is the same as QNETO)
626     - introduce a few local fields to avoid modifying external fields such
627       as atemp, etc.
628    
629    checkpoint58s_post
630    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
631      changed exf_set_gen.F so that
632        genperiod=0 means input file is one time-constant field and
633        genperiod=-12 means input file contains 12 monthly means
634    o CG2D: use pre-computed solver main-diagonal (stored in common block);
635      this affects truncation error ; generate new output file for exp. which
636      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
637        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
638        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
639        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
640        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
641        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
642    o start implementation of deep-atmosphere and anelastic formulation
643    o verification: remove 2nd copy of input files and use script "prepare_run"
644      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
645    o mom_common/vecinv/fluxform: fix a few initialisation isssues
646    o profiles: fix for multithreaded case
647    
648    o diagnostics: rename few diags:
649      s/'PRESSURE'/'RCENTER '/g
650      s/'TICE    '/'oceFreez'/g
651      s/'TAUX    '/'oceTAUX '/g
652      s/'TAUY    '/'oceTAUY '/g
653      s/'SWFLUX  '/'oceQsw  '/g
654      s/DIFx/DFxE/g
655      s/DIFy/DFyE/g
656      and add few ocean-forcing diagnostics:
657      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
658    o modifications to pkg/seaice/growth.F and budget.F, which change results of
659      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
660      as actual snow thickness.  It now refers everywhere to effective snow
661      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
662    
663    checkpoint58r_post
664    o modifications to pkg/seaice/growth.F, which change results of
665      lab_sea experiment: fixes pertain to melting snow over open water, to
666      masking EVAP under sea ice, and to using the correct AREA variable for
667      computations of EVAP, PRECIP, HSNOW, and GHEFF
668    o add ability to read bathy, salt, and theta using MNC (off by def)
669    o add flooding algorithm and advection of HSNOW for pkg/seaice;
670      both are turned off by default and do no change any results
671    o seaice advection with pkg/thsice: a step toward the use of non-linear
672      advection scheme, but #ifdef or commented out for now (requires more EXCH).
673    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
674      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
675      in natl_box (affects results @ truncation level: update output.txt)
676    o multi-threading and IO:
677      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
678      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
679        (needed to work with SingleCpuIO): tested in all verif. exp.
680    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
681      affects the results (but none of the verification test uses this scheme).
682    o Adding some pkg/diagnostics capability to pkg/seaice
683      (will certainly be subject to changes)
684    o ctrl: adding new control variables:
685      lwflux, lwdown, evap, snowprecip, apressure, runoff
686    
687    checkpoint58q_post
688    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
689      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
690      high_res_cube configuration by 4% on Columbia.
691    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
692      add (in global_with_exf/code) a version of EXF_INTERP_READ without
693      dynamical allocation (seems to work in multi-threaded).
694    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
695      single CPU io) so that TAF does not have to see EESUPPORT.h
696    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
697    
698    checkpoint58p_post
699    o obcs: stop if obcs is used with useCDscheme = .true.
700    o shelfice:
701     - fix a sign error so that no slip at shelfice interface works
702     - remove stop for combination non-hydrostatic code and shelfice. That does
703       not mean, that the results are correct, but at least they are numerically
704       stable
705    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
706    o added adjoint exch routined for all exch*3d* routines
707      and updated flow directives
708    
709    checkpoint58o_post
710    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
711      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
712    o change controling S/R for writing pickup file (new S/R do_write_pickup)
713      and clean-up reading/writing of pickup files.
714    o fix local version of read/write pickup (NH part) in rotating_tank/code
715    o simplify EXCH interface:
716     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
717     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
718    o added the regrid package
719    o shelfice:
720     - add a simple boundary layer scheme to reduce noise
721     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
722    
723    checkpoint58n_post
724    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
725       local variable (not in common block).
726    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
727      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
728      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
729        to work with SingleCpuIO.
730    o add "_d 0" to real constant of pkg/cfc subroutines ;
731       update exp. cfc_exemple & tutorial_cfc_offline output files.
732    o multi-threading and IO:
733      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
734        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
735      - barrier before and after reading.
736      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
737      - avoid using MDS_WRITELOCAL for LAND pkg output.
738      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
739        common-block variables ; Allows multi-threading with master-thread IO.
740    o change default MAX_NO_THREADS from 32 to 4 ;
741      and stop cleanly when MAX_NO_THREADS is too small.
742    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
743    
744    checkpoint58m_post
745    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
746       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
747    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
748       keep global_ocean.90x40x15 (for AD testing) with former secondary test
749       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
750    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
751        add MITgcm_tutorials (= code + all the tutorials)
752    o ecco, option to compute cost for total ssh (mean+anom)
753    o consistent with addition of ptracer and ssh in pkg/profiles
754    o profiles: adding ptracer and ssh
755    o testreport: change multi-test output-file name
756      (from output.txt.{name} to output.{name}.txt)
757    o profiles: now ok for mutli-tiles case
758    o seaice: add 4 parameters for different advection schemes for area,
759      (effective) seaice thickness, enthalphy, and snow height. Their default
760      is the standard parameter SEAICEadvScheme
761    o calc_gw:
762     - add cosFacU in zonal viscous flux (harmonic.visc.).
763     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
764       of tutorial_plume_on_slope.
765    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
766    o calc_gw: true flux-form, account for horizontal grid spacing.
767      update rotating_tank results, but not plume_on_slope (affected at
768      truncation level, 11 digits).
769    
770    checkpoint58l_post
771    o calc_gw:
772     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
773     - remove side-drag for now (need to fix it); update plume_on_slope results.
774     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
775    o commit code to make SST/SSS weights spatially variable
776      (based on either variable in-situ or variable initial T/S weights)
777    o pkg/ecco:
778      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
779        now based on horizontally varying weights wthetaLev, wsaltLev
780      * cost_averagesflags now returns year indices in addition to day, month
781      * sflux balance is performed on annual basis
782        (sflxumm, sfluxmm2, bal_sfluxmm)
783      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
784        including separate counting and multipliers
785    o pkg/rbcs
786      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
787    
788    checkpoint58k_post
789    o testreport:
790     - always build in dir. "build" (if not there, mkdir build instead of building
791       & running in input)
792     - run in dir run (if it exists), in build otherwise.
793     - call prepare_run (if input/prepare_run exists)
794     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
795    o pkg/exf modifications to interpolation and rotation routines for more
796       reasonable treatment of North Pole singularity: for tracers North Pole
797       value is set to northernmost zonal-mean value, for zonal velocity it is
798       set to zero, and for meridional velocity it is set to northernmost value.
799    o pkg/exf/exf_check_range.F
800     - add tile index to diagnostics and move stop statement to the very
801       end of the routine.
802    o pkg/diagnostics: (diagnostics_main_init.F)
803      define title of isomorphic variables according to the current config.
804    o pkg/thsice with pkg/seaice dynamics:
805    - fix domain of computation (interior only, required for exf) and do exchanges
806    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
807    o towards a standard way of dealing with multi-threading in MONITOR
808      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
809    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
810       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
811    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
812    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
813    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
814       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
815    o tracer advection:
816     - clean-up and simplify calc_common_factors.F
817     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
818       advection subroutine (but still not used within DST advection S/R)
819    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
820    
821    checkpoint58j_post
822    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
823      from file (collects calls previously in FORWARD_STEP)
824    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
825    o adjoint store dir. adjusted accordingly
826    o genmake2
827      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
828    
829    checkpoint58i_post
830    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
831      on wind stress (SEAICEstressFactor defaults to 1.)
832    o Total number of Timers is finite (<=40): comment out 2 non-essential one
833      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
834    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
835      on CS-grid: no longer loosing mass.
836    o exf & curvilinear-grid: no longer modify longitude xC & xG.
837    o pkg/ggl90: fix sloppy output and fix a bug
838    o pkg/seaice: added SEAICEuseEVPpickup parameter
839      - Set to false in order to start EVP solver with
840        non-EVP pickup files when using SEAICEuseEVP
841      - fix sign error in diffusion in seaice_calc_rhs
842    
843    checkpoint58h_post
844    * Modifications for bottom topography control
845      o replace hFacC by _hFacC at various places
846      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
847      o add non-self-adjoint cg2d_nsa
848      o update autodiff support routines
849      o re-initialise hfac after ctrl_depth_ini
850      o works for 5x5 box, doesnt work for global_ocean.90x40x15
851    * Adding verification for 5x5 box (4-layer) bottom topography control
852    
853    checkpoint58g_post
854    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
855       used for mean seasonal cycle, mean diurnal cycle); add an example
856       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
857    o pkg/ggl90:
858      - add parameter (minimum surface kinetic energy)
859      - fix bug (avoiding division by zero)
860    o couple pkg/thsice to pkg/seaice:
861      - modify advection in seaice to accomodate new scalar fields to be advected
862      - only muliDimAdection scheme work with seaice/thsice
863      - mapping of thsice-variables to seaice-variables, back and forth
864      - does not break the verification experiments, but does not give the
865        desired results either
866    o pkg/seaice
867      - make (default) second order advection a bit less confusing?
868    
869    checkpoint58f_post
870    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
871      to pkg/seaice):
872      - new routines thsice_map_exf and thsice_get_exf provide the interface
873      - add an additional formal parameter to thsice_solve4temp
874    o pkg/exf:
875      - add new fields wspeed, snowprecip (to be able to couple to thsice)
876      - correct Stefan-Boltzmann constant
877      - new parameter for longwave surface emittance
878      - separate some stuff from exf_bulkformulae into new routines  
879        exf_radiation, exf_wind
880      - add new parameters and constants: longwave emissivity for ocean, ice
881        and snow, evaporation parameters over ice
882      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
883        either wind from stress or stress from wind
884    o pkg/thSIce:
885    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
886    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
887       and THSICE_CALC_THICKN
888    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
889    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
890      to make debugging easier.
891    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
892    o pkg/bulk_force:
893      - clean-up comments and parameters ;
894      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
895    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
896      generate new output for test-experiment: aim.5l_cs.thSI
897    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
898      testreport accordingly
899    
900    checkpoint58e_post
901    o SEAICE_CGRID adjoint done
902    o R_STAR adjoint implemented.
903      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
904      * need to sort out init. of h0facc, etc.
905    o Make pkg/profile fully independent of ecco,cost, etc. stuff
906      to be able to use it in pure forward.
907    
908    checkpoint58d_post
909    o upgrade simple test-experiment to tutorial example:
910     step.1: duplicate the experiment and (step.2) will remove the old copy.
911      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
912      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
913      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
914      tutorial_global_oce_biogeo    <- copy of dic_example
915      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
916      tutorial_plume_on_slope       <- copy of plume_on_slope
917      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
918      tutorial_global_oce_optim     <- empty for now (David ?)
919      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
920     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
921    o correct a sign problem in cost_scat.F
922    o obcs and ptracers: fix boundary conditions for advections schemes
923      with larger stencil
924    o thsice adjoint: start
925    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
926      completeness
927    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
928      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
929    o ptracers adjoint:
930      * avoid extensive recomputatations
931      * fix missing re-init. of gptr (missed by TAF)
932    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
933      me to turn off the excessive output to STDOUT that this package produces
934    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
935      and add those terms in Vector-Invariant formulation.
936    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
937      if the control period (xx_hfluxperiod etc) is 0
938    o in profiles pkg, clean routines and fix details
939    o in ecco pkg, reading ssh data:
940      fix problem in case the model does not start at iter0=0
941    o fix mnc-pickup/restart for ptracers
942    o new package prifiles:
943      code to compute profile-based cost by Gael Forget
944      (modifs in ecco, ctrl, autodiff)
945    o Benign bug fix in initialization (spotted by M. Mazloff) of
946      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
947    
948    checkpoint58c_post
949    o adjoint: finish NLFS adjoint and provide reference output in
950      verification/global_ocean.90x40x15/results_ad_nlfs
951    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
952      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
953      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
954      with SEAICE_CGRID defined.
955    o move calendarDumps from "data" to "data.cal" and clean-up the code
956      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
957    o add useEXF & useCAL flags (for now, set in hard-coded way)
958    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
959      (were missing in NH mode, and wrong in quasihydrostatic mode).
960      waiting for Chris updated version of calc_gw to add those CALLs.
961    o fix bug in quasihydrostatic S/R ;
962      add a test for this option: global_ocean.90x40x15.qshyd
963    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
964      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
965    o add on/off flag useOffLine for package OFFLINE
966    o seaice:
967      - modify advection so that it works also on the C-grid
968      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
969        problem in multi-tile runs with C-grid
970      - add flags for clipping ice velocities and/or masking solver forcing
971      - fix drag (ocean on ice) formulation and a bug that caused noise in the
972        C-grid solver
973      - added a few comments to seaice_diffusion.F
974      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
975        are now exclusive)
976      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
977        required re-ordering the code a little:
978       + make DAIRN global variable (defined in SEAICE)
979       + move computation of the viscosities eta and zeta into a new separate
980         routine (because I need to recompute them in seaice_ocean_stress.F)
981    
982    checkpoint58b_post
983    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
984      update output.txt of exp. aim.5l_cs.thSI
985    o various mnc cleanups and improvements:
986      + shrink lookup tables by factor of ~4
987      + better error reporting when running out of lookup space
988      + able to handle longer path/file names (up to 500 chars)
989    o adjoint:
990      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
991      - TBD: "hidden" mom_vecinv recomp. in dynamics
992    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
993     (allow to differentiate between forcing components using new integer flags:
994      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
995     and add new flag to put Dissipation tendency out of Adams-Bashforth.
996    o ecco
997      - enable trend removal from SSH anomaly obs.
998    o adjoint
999      - a fix for PmEpR when #undef EXACT_CONSERV
1000      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
1001      - try to fix "hidden" recomp. in forward_step for NLFS
1002        (NLFS seems broken sometimes after I checked it in)
1003    o seaice:
1004     - add c-grid version of the dynamic solver:
1005       + three new routines that are the c-grid substitute lsr, dynsolver
1006         and ostres
1007       + put a few fields that were local to dynsolver into global common
1008         blocks, so that I can move the computation of stresses etc into
1009         seaice_lsr (saves coding but may break the adjoint).
1010     - replace more hardwired parameters by runtime parameters
1011     - add ice masks that mask the rhs of the implicit solvers where there
1012       is no ice (commented out in seaice_dynsolver, because i am not sure
1013       if this works properly), eventually this should replace the clipping
1014       of ice velocities in seaice_dynsolver to +/-40cm/s.
1015    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
1016      include it only where its needed
1017    o move balancing of fluxes before the call of external_forcing_surf
1018    o seaice:
1019      - correct units of turning angles (now they are really in degrees)
1020      - move computation of GWATX/Y out of main routine into dynsolver
1021      - initialize GWATX/Y in seaice_init
1022    o Apply mask on Fresh-Water flux (needed for SSH forcing).
1023      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
1024    o seaice: add runtime flags for turning angles (default to zero)
1025    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
1026      and trend from exf forcing and ctrl control adjustments
1027    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
1028      (since checkpoint57x_post)
1029    o change the default rotation period to 86164.s = the Earth rotation
1030    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
1031      and based on a reference stratification. Tested within hs94.cs-32x32x5.
1032    o seaice advection: add code for choosing between the default (2nd order
1033      central differences) and multiDim advection schemes provided by
1034      pkg/generic_advdiff
1035    o seaice:
1036      - removed all references to SEAICE_GRID.h fields from
1037        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
1038        (cubed-sphere configuration will change a little)
1039      - grid computations in seaice_init are obsolete now.
1040      - cleaned up code a little so that is easier to read (hopefully).
1041      - added new (better?) discretizations of default advection and diffusion
1042        (turn on with SEAICEuseFluxForm)
1043      - replace 1 in 3d global fields by kSurface in growth.F
1044      
1045    checkpoint58a_post
1046    o seaice:
1047      - bug fix in advect.F
1048    o shelfice:
1049      - separate shelfice load anomaly from pload (breaks with time
1050        dependent forcing), => introduce constant field shelficeLoadAnomaly.
1051        Its default is 0., but it may be computed more cleverly from (unknown)
1052        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
1053        done offline. A good approximation of the pressure load anomaly is
1054        necessary to avoid large initial adjustment processes underneath
1055        deep-reaching shelfice.
1056      - small fix in ISOMIP shelfice_thermodynamics
1057      - add more sophisticated thermodynamics of Hellmer (1989), this is
1058        now the default
1059      - give a few constants more intuitive names
1060    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
1061      if bulk formulae are used in long integration (especially EmPmR). Turn
1062      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
1063      if balancePrintMean, the imbalance that is substracted is printed to
1064      STDOUT.
1065    o fix bug (typo) in obcs_apply_eta.F
1066    o add a new package shelfice which enables us to model the circulation
1067      underneath shelf-ice with draughts of hundreds of meters.
1068     - works
1069     - to do: + include improved thermodynamics
1070              + check whether kSurfC (from model/inc/SURFACE.h) can be used
1071                instead of new field kTopC
1072              + can we use topoFile, Ro_surf and existing code in ini_depth.F
1073                instead of new field R_shelfIce and new code in ini_depth.F
1074                and ini_mask_etc.F?
1075              + adjust vertical mixing schemes?
1076    o seaice pkg:
1077     - add a cpp-flag to include a simple formula for a salinity dependent
1078       freezing point of sea water at the surface
1079     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
1080       meridional stresses are now different (and hopefully correct)
1081    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
1082       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
1083       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
1084    o pkg/diagnostics: add options and parameters for regional-statistics
1085       diagnostics ; define regions by reading a region-mask from a file
1086       (might add other options later)
1087    o pkg/bulk_force:
1088     - add option and parameters to use AIM surface-flux formulae.
1089     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
1090       others forcing fields (defined in PARM05, parameter file "data") are loaded
1091       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
1092     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
1093     - use the right EXCH call for uwind,vwind (to work on CS-grid).
1094     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
1095       and parameters (note: calcWindStress replaces .NOT.readwindstress).
1096     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
1097    
1098    checkpoint58
1099    o add "--embed-source" option to genmake2 which, when the supporting
1100      tools can be compiled (as determined by genmake2) will turn on the
1101      embed_files package which then embeds the entire MITgcm source code
1102      (*.[fFhc] + Makefile) used for the build within the executable
1103      - requested by CNH but off by default
1104      - adds a paltry <9MB to the mitgcmuv executable in most cases
1105      - only writes the output when useEMBEDSRC in eedata is true
1106    o clean up 3-dim. relaxation codes:
1107      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
1108      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
1109      * Thanks to Tom Haine for testing!
1110    
1111    checkpoint57z_post
1112    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
1113      affects output (@ truncation level) of exp. plume_on_slope ; updated.
1114    o fix the pickup behavior for obcs in combination with ptracers
1115    o fix a bug in ptracers_external_fields_load
1116    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
1117      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
1118    o transfered surface NH pressure to eta field (if exactConserv).
1119    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
1120         and update lab_sea output.txt file.
1121    o completing 3-dim. relaxation code: additional term
1122         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
1123      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
1124      * At compile time, in "EXF_OPTIONS.h" set
1125          #define  ALLOW_CLIMTEMP_RELAXATION
1126          #define  ALLOW_CLIMSALT_RELAXATION
1127      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
1128          tauThetaClimRelax3Dim = 15552000.0,
1129          tauSaltClimRelax3Dim  = 15552000.0,
1130      * 3 cases:
1131          1) Use a constant-in-time 3-dim. field
1132          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
1133          3) Real-time relax. to time-evolving prescribed field
1134    o Adding Laplacian-type smoothness constraint on
1135      initial and boundary (forcing) controls (ic, bc)
1136      * enable at compile-time via
1137        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
1138      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
1139      * Absolute scale somewhat unclear so far
1140      * no area weighting was included since no other cost term does so far
1141    
1142    checkpoint57y_post
1143    First step for a NLFS adjoint
1144    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
1145    o new init. routines for calc_r_star, calc_surf_dr
1146    o still need to deal with ini_masks_etc
1147    o testreport seemed happy
1148    checkpoint57y_pre
1149    
1150    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
1151    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
1152    o add new offset feature to offline pkg (plus minor cleanup)
1153    o cfc fixes for final year of integration
1154    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
1155      be in GCHEM_OPTIONS).
1156    
1157    checkpoint57x_post
1158    o fix testreport Pb in multiple test experiment.
1159    o cleanup our namelist syntax in verification:
1160      - make it more F95 standards compliant (some work still needed)
1161      - allows the vast majority of our tests to work with gfortran
1162    o Non-Hydrostatic:
1163     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
1164     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
1165    o Allow to apply AB on T,S rather than on AB(gT,gS):
1166     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
1167     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
1168       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
1169     - need a "clever" read_pickup to restart from the other AB formulation
1170    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
1171    o remove some unused variables (reduces number of compiler warnings)
1172    o adjoint
1173      * Disable useVariableViscosity for adjoint for time being
1174        (there are a number of extensive recomputations)
1175      * Initialize certain variables needed for adjoint
1176    
1177    checkpoint57w_post
1178    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
1179                 fix the singleCpuIO RS version of MDSWRITEFIELD
1180       and add a WARNING if using globalFiles=T with multi-processors.
1181    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
1182      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
1183    o tracer advection scheme:
1184      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
1185       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
1186       was not very convenient).
1187      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
1188       (further tests needed for the implicit DST & Flux-Limiter schemes).
1189    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
1190      and sRef for convenience, handy, when you want to initialize
1191      ptracers in a large domain with a constant non-zero value. Also,
1192      untangle ptracers_init.F a little.
1193    
1194    checkpoint57v_post
1195    o change dome exp. to use variable viscosity in side-drag terms.
1196    o remove all the files from the cfc_offline test since they are now
1197      incorporated into tutorial_cfc_offline which has been producing
1198      identical results for a few days of testing
1199    o add new parameter: sideDragFactor to enable half-slip-side BC
1200      and change side-drag S/R to use viscosity from mom_calc_visc
1201      (can switch back by setting sideDragFactor=0.); affects results at
1202      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
1203       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
1204    o vorticity & strain are now computed without masking, to account for
1205      no-slip-side BC in variable viscosity calculation ; mask is applied
1206      anyway later on, before computing advection/coriolis terms.
1207    o modify exp4 to test new obcs support for reading from external files
1208      and for passive tracers
1209    o fix behavior of ptracers_monitor when monitor output is written to a
1210      netcdf-file; still not independent of monitor.F (writes in the same
1211      file).
1212    o change default value of tRef (put a uniform, meaningful value for ocean
1213      & atmos) and initialize sRef (was missing, as Martin mentioned).
1214    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
1215      to be proportional to enstrophy dissipation length.  Thus,
1216       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
1217      This is now consistent with Smagorinsky and with the manual.
1218    
1219    checkpoint57u_post
1220    o OBCS and PTRACERS: add open boundary support for passive tracers
1221      - either use homogenous (pseudo) v.Neumann conditions or prescribe
1222        OB-values from file; this is not different from the way theta and salinity
1223        are treated
1224      - however, Orlanski-radiation conditions are not supported, and the model
1225        will stop if you use pTracers and Orlanski at the same time.
1226      - beefed up the rountine obcs_external_fields_load: now only those open
1227        boundary values are overwritten with values from files for which there
1228        are really files, otherwise the OB-fields remain untouched. This makes
1229        it possible to use different OBs at different ends of the domain (as
1230        with EXF)
1231    o reduce number of exch calls in shap_filt (s2).
1232    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
1233      truncation level) 4/5 MLAdjust test results (11&12 digits match).
1234    
1235    checkpoint57t_post
1236    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
1237    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
1238      same truncation, independent of the face number: affects affects several
1239      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
1240    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
1241      note that biharmonic viscosity + no-slip was not tested in any experiment.
1242    o fix bug in non-linear free-surf side-drag ; generate new output for
1243      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
1244    o make mnc honor the writeBinaryPrec flag for most kinds of output
1245    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
1246    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
1247      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
1248    o add brackets in multi-terms sum to get same truncation, independent of
1249      the face number (manage to get exactly same value of gU,gV at the cs-edge)
1250      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
1251    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
1252      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
1253      a maximum grid-scale Reynolds number.  Also, changes all length calculations
1254      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
1255      Suggested values of viscosity parameters found in mom_calc_visc.
1256      Many new viscosity diagnostics available.
1257    
1258    checkpoint57s_post
1259    o Add clearing-house for viscosity calculations, mom_calc_visc and
1260      correct numerous bugs in LeithD and Smagorinsky discretizations.  
1261      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
1262      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
1263      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
1264      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
1265      The Strain-Tension form is now called with useStrainTensonVisc=.true.
1266      ViscAhStrain and viscAhTension are now retired.
1267    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
1268    o In response to JMC's bug report, genmake2 now ignores any soft-links
1269      that it finds in the *current* directory when searching for files.
1270      Soft-links found in any other source directories will still work as
1271      they did before.
1272    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
1273      a C routine to unlimit the stack size
1274    o mnc-ify pkg/aim snapshot vars
1275    o mnc-ify pkg/land as requested by Daniel
1276    o various changes to mnc including:
1277      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
1278      - output can now be grouped so that all files within a group
1279          change the ITER portion of their names in lock-step together
1280      - can now read ("global") PER-FACE (in addition to PER-TILE) files
1281          and works with both EXCH1 and EXCH2 (but needs more testing)
1282      - writing works for all verification test cases w/ g77 on Linux
1283    
1284    checkpoint57r_post
1285    o make MNC variable initialization happen earlier
1286    o add diagnostics for (almost) each term of the momentum Eq.
1287    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
1288    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
1289    o remove MINIMAL_TAVE_OUTPUT option ;
1290      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
1291    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
1292      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
1293    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
1294    o add time-dependent SST, SSS control
1295    o cost terms in ecco/ modularized (new cost_generic.F)
1296    o cost_averages routines are modularized (new cost_averagesgeneric.F)
1297    o new infrastructure for seaice model vs. obs misfits in seaice/
1298      * driver from the_main_loop.F is seaice_cost_driver.F
1299      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
1300      * gradient check in Exp. 6a of natl_box_adjoint/
1301    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
1302      (see README file)
1303    
1304    checkpoint57q_post
1305    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
1306    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
1307      - bug was reported by Jean-Michel and Ian Fenty
1308    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
1309      update exp. cpl_aim+ocn output.
1310    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
1311      Needed for high-res. runs with large global files
1312      to be able to limit tapelev size
1313    o Changed some tests for adjoint:
1314      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
1315      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
1316      * global_ocean.90x40x15/ back to default 3-level checkpointing
1317    o Modifications to enable scripted COMMON to MODULE conversion
1318      * verification/OpenAD/code/ has necessary scripts and description;
1319      * converts, compiles and runs successfully;
1320    
1321    checkpoint57p_post
1322    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
1323    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
1324      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
1325    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
1326    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
1327      (was already the case for dissipation with mom_vecinv,
1328       and also the case for grad.PhiHyd when staggered-timeStep)
1329      This will allow to put dissipation out-off the AB time-stepping.
1330     Unfortunately, affects truncation error. Update output of exp. that "fails"
1331      (cg2d matching number) and leave the others for later: front_relax(10),
1332      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
1333      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
1334    
1335    checkpoint57o_post
1336    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
1337      (2) its ready to be documented during the 20050801 DocFest
1338    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
1339      for ideal_2D_oce and lab_sea on linux_ia32_g77
1340    o set to #undef CTRL_SET_OLD_MAXCVARS_30
1341      in global1x1_tot/code_seaice_adj to access indices 32, 33
1342      (worth another tag)
1343    
1344    checkpoint57n_post
1345    o adding precip control xx_precip 32
1346    o adding swflux control xx_swflux 33
1347    o Replacing 10 forcing penalty cost routines by 1 generic.
1348    o Implementing partitioning in time-mean and variable adjustment
1349      for atmos. state.
1350    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
1351    o in natl_box_adjoint:
1352      * updated exp 1 to 10
1353        (but does not have time-mean vs. variable split results yet)
1354    o updated global1x1/*_seaice_adj/
1355      to incorporate latest changes
1356    o enable useSingleCpuIO for mdsio vector routines
1357      (applies in particular to tapelev I/O)
1358    o removed inefficient K-loop in all active_file*control*.F
1359    
1360    checkpoint57m_post
1361    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
1362      and advect_cs (use EXCH-2 and standard cs-32 grid files).
1363    o pkg/exch2: filling of face-corner halo regions is optional
1364      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
1365    
1366    checkpoint57l_post
1367     tag before updating tutorials (pre-release-2)
1368    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
1369       for output and interpolation of input fields onto model grid)
1370    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
1371       Affects results of exp. rotating_tank ; update output.txt.
1372    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
1373          and taking the square quantity and/or using a fraction-weight field.
1374    o fix aim_diagnostics_init.F mate numbers.
1375    o add mnc output capability to diagnostics/diagstat and update
1376      our cvsignore files for the ACSII output generated
1377    
1378    checkpoint57k_post
1379    o lab_sea now uses diagnostics package and provides a suite of
1380      new EXF diagnostics output.
1381    
1382    checkpoint57j_post
1383    o exf
1384      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
1385        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
1386        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
1387      * extended diagnostics output
1388        - now includes all EXF variables
1389        - hs, hl moved to common block
1390        - separate S/R for diagnostics, called after ctrl vector is added
1391        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
1392        - EXFqnet contains true Qnet (i.e. includes qsw)
1393      * updated verif. lab_sea, global_with_exf
1394      * Rearranging hflux (exf_mapfields -> exf_getforcing)
1395        to ensure that diagnostics sees a true EXFqnet
1396    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
1397    o diagnostics pkg: change pointers so that 1 diagnostic can be used
1398      several times with different frequencies.
1399    o mnc-ify the thsice package as requested by Daniel Enderton
1400      - the monitor--MNC output needs work
1401      - many attributes need to be added (most are currently blank)
1402    o mnc-ify theaim_v23 package as requested by Daniel Enderton
1403      - many attributes need to be added (most are currently blank)
1404    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
1405    o add Sadourny like discretization to the 4th.O vorticity advection scheme
1406    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
1407      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
1408         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
1409    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
1410     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
1411    
1412    checkpoint57i_post
1413    o Diagnostics package was changed: diagnostic allocation is now deactivated
1414      by setting an empty file name in the namelist (used to be by setting 0 frequency)
1415    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
1416      add 1rst Order upwind vertical Shear.
1417    o add a quick fix for A/B checkpointing in OFFLINE mode
1418    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
1419      end-run around the C/Fortran linking horror in eesup/src/timers.F
1420    o added pkg/runclock: allows user to terminate run based on wall clock
1421    o added non-hydrostatic scaling parameter: nh_am2
1422    o pkg/my82: futile attempt to make results compiler-independent by adding
1423      some "_d 0", etc. no effect.
1424    o for mnc output, fill the 'T' coordinate var with myTime and create a
1425      separate 'iter' variable for iteration count
1426    o pkg/diagnostics:
1427      add new capability: output of Global/Regional & per-level statistics ;
1428      tested against monitor output (including land & thSIce) on various exp.
1429    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
1430    
1431    checkpoint57h_done
1432      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
1433      data.diagnostics, data.gchem, data.ptracers) is done.
1434    
1435    o pkg/diagnostics: prepare for Global/Regional statistics.
1436      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
1437    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
1438      and rename it: DIFFERENT_MULTIPLE
1439    
1440    checkpoint57h_post
1441    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
1442    o pkg/diagnostics: change output frequency, now in seconds (instead
1443      of Nb of iterations). This requires to change data.diagnostics.
1444    checkpoint57h_pre
1445    
1446    o in mnc, let the user create the output dir if both mnc_outdir_date
1447      and mnc_outdir_num are false
1448    o add fflags() to pkg/diagnostics which allows one to specify, on a
1449      per-file basis, the file precision [default behavior is unchanged]
1450    o added diagnostics to pkg/kpp, including computation of mixed layer
1451      depth based on a temperature/density criterion
1452    o updated verification/natl_box to test the new pkg/kpp diagnostics
1453    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
1454    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
1455    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
1456      not mnc -- this mistake was found by JMC and is now corrected
1457    
1458    checkpoint57g_post
1459    o add Adams-Bashforth 3rd Order time stepping:
1460      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
1461      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
1462    checkpoint57g_pre
1463    
1464    o make lambda[Theta,Salt]ClimRelax spatially varying
1465      (default remains spatially uniform constant based on tau)
1466    o added new control variables
1467      * init. uVel, vVel, etanN
1468      * lambda[Theta,Salt]ClimRelax
1469    o separate masks used for ctrl_pack/unpack 'from write_grid' output
1470      (suggested by G. Forget)
1471    
1472    checkpoint57f_post
1473    o add parameter "baseTime" = model base time = time at iteration zero
1474      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
1475      account for baseTime shift
1476    o move Coriolis arrays from PARAMS.h to GRID.h
1477    checkpoint57f_pre
1478    
1479    o mnc-ifying the seaice package
1480    o introduced an alternative length scale calculation for use in the limiting
1481      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
1482    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
1483    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
1484      as well as grad(vort3).  Made it compatible with both approximate form
1485      for the cubed sphere and full form of these gradients.  Added flag
1486      useFullLeith to select between approximate and full form.  
1487    o add "d0" in getcon.F to reduce differences between compilers/platforms
1488      update output.txt of exp. fizhi-gridalt-hs
1489    o change port_rand funtion to allow to set the seed.
1490    o fix obscure MNC bug involving conversion between reals and integers
1491      - it caused no problems with certain (eg. gcc, ifc) compilers but the
1492        new version is now more standards-compliant
1493    o adjoint-related modifications
1494      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
1495      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
1496      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
1497    
1498    checkpoint57e_post
1499    o Adding eddy stress controls a la Ferreira et al.
1500    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
1501    
1502    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
1503      update output.txt of exp. fizhi-gridalt-hs
1504    o add more "Z" dimensions and associated coordinate vars to MNC
1505    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
1506    o parameter calendarDumps: when set, approximate months (30-31 days) and years
1507      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
1508      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
1509      months and years.  Requires pkg/cal.
1510    o diagnostics: add pickup functionality
1511      - off by default for backwards compatibility
1512      - current version only uses MDSIO -- MNC will be added
1513    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
1514    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
1515    
1516    checkpoint57d_post
1517    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
1518    o modify verification/ideal_2D_oce so that it tests the creation of mnc
1519      output from the diagnostics package
1520    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
1521    o make genmake2 more portable by using ".$FS" instead of ".f" for more
1522      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
1523    o add coordinate variables to the MNC output from the diagnostics package
1524    o change MNC-flags default value: true when useMNC=TRUE
1525    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
1526      the ability (off by default) to read the grid information using MNC
1527    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
1528    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
1529    o do snap-shot diagnostics at the middle of the time-interval (instead of
1530      at the end).
1531    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
1532      new test for AIM with thSIce + slab-ocean
1533    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
1534    o move state variable diagnostics to the beginning of the time step ;
1535      (note: still needs some work specially for snap-shot diagnostics)
1536      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
1537    
1538    checkpoint57c_post
1539    o Change testing option (-ieee) to get closer agreement between g77 & ifort
1540    o generate new output.txt files on faulks with g77 & the new -ieee option
1541    checkpoint57c_pre
1542    
1543    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
1544      update output.txt of exp. global_ocean.90x40x15
1545    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
1546      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
1547    o add saltFlux(+File) forcing capability with periodicExternalForcing
1548    o allow to use pkg diagnostics for GM-Redi & ThSIce output
1549    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
1550    o improvements for the MNC output from DIAGNOSTICS:
1551      - correct handling of the unlimitied dimension
1552      - all dims now have associated coordinate variables
1553      - variables located at U, V, and Corner ("Z") points are now written
1554        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
1555        *all* data points are output
1556    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
1557    o added pkg/seaice/seaice_monitor.F
1558    o mdsio_readfield.F can now read files visible only to master MPI process.
1559    o pkg/seaice: some test code for ice-modified ocean stress
1560    o exf_getffields interpolation defaults to bilinear for all scalar forcing
1561      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
1562      spurious negative numbers for precipitation and humidity.  Will cause
1563      some small numerical differences for integrations using pkg/exf/exf_interp.F.
1564    o pkg/ctrl/
1565      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
1566        May be enabled via doPackDiag
1567      *  introduce z-scaling of
1568         + gradient (doZscalePack) and
1569         + control (doZscaleUnpack)
1570    o pkg/mdsio/
1571      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
1572      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
1573    
1574    checkpoint57b_post
1575    o simplify options in diagnostics_fill arguments (remove weird combinations)
1576    o fix MNC coordinate variables so that they now contain per-face index
1577      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
1578      general, EXCH2 grids are only aligned to a "local" coordinate system
1579    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
1580    o Implement instantaneous output within pkg diagnostics:
1581      setting a negative frequency in data.diagnostics produces
1582     "snap-shot" output (as opposed to time-average if freq > 0)
1583    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
1584      NOTE: change ptracer diagnostics name: use 2 characters to work with
1585            more than 9 tracers. Add also diagnostics of advect & diffus flux.
1586    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
1587      becomes the coordinate variable for the 'T' dimension
1588    o add CF-style coordinate variables to MNC
1589      - just a first cut:  numbers are meaningless on the cubesphere and
1590        missing along the T axis but otherwise it works!
1591    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
1592    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
1593    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
1594      this is based directly on what the model compute, so that the content of
1595      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
1596    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
1597    o clean up build options files for SunOS, in particular
1598      - remove -traditional from xmakedepend
1599      - change -xarch=v9 to -xarch=native for f77
1600      - restore use of make (not gmake)
1601      - add CC=gcc if using g77
1602    o changes per discussion of AM, JMC, & EH3 today:
1603      - move redundant "grid" variables out of "state" -- in preparation of
1604        creating proper CF-style coordinate variables and in recognition
1605        that any/all grid variables can be easily copied (eg. w/NCO) from
1606        the grid files into any of the other NetCDF files
1607      - *always* output grid variables with MDSIO (this will eventually be
1608        changed)
1609      - output MNC grid file if useMNC is true
1610    o every instance of _END_MASTER() has been found and replaced with
1611      _END_MASTER( myThid ) in order to satisfy certain picky Sun
1612      preprocessors
1613    o re-arrange diagnostics pkg initialisation:
1614     - allow each package to extend the available diagnostics list
1615     - add some checking and fix small problems (multi-threaded, ...)
1616     - new S/R diagnostics_fill (replace fill_diagnostics):
1617       look through the short list of active diag. (instead of the long list)
1618       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
1619    
1620    checkpoint57a_post
1621    o this set of changes restores TAMC compatibility
1622      tested for global_ocean.90x40x15 adjoint on trough
1623      (what a pain)
1624    
1625    checkpoint57a_pre
1626    o some modifs in tools/build_options for sunos
1627    o call ctrl_pack for ctrl at end for optimcycle=0
1628    
1629    checkpoint57
1630    o add horizontal bi-harmonic viscosity for vertical velocity
1631      - new parameter viscA4W (defaults to viscA4)
1632      - affects only non-hydrostatic code
1633      - to be done: no-slip lateral boundary conditions
1634    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
1635    o implement Implicit Vertical advection for pTracers
1636    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
1637      (implemented also for implicit vertical diffusion & advection)
1638    o OBCS: extend application of tracer open boundary conditions
1639      to a strip beyond the boundary of width Olx/Oly
1640    o add call monitor to TAF set of required calls (flow directives)
1641      and include in natl_box_adjoint
1642    o untangle a few ifdefs related to cost, ctrl, autodiff
1643      untangel a few ALLOW_ECCO_OPTIMIZATION
1644    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
1645      (theta2, salt2 in ecco_cost_weights)
1646    
1647    checkpoint56c_post
1648    o OBCS as control variables
1649      - update ctrl_ad_diff.list, obcs_ad_diff.list
1650      - remove balance of obcs controls from default
1651      - fix index bug nobcs in ctrl_init
1652      - fix dummy fields filen in ctrl_pack
1653      - add dummy weights for obcs
1654    o lsopt: comment out fort.94 output
1655    o optim:
1656      - remove unnecessary header files
1657      - adjusted namelists
1658      - add xerbla.F to Makefile
1659    o exf:
1660      - multiple modifications of exf_check_range
1661      - unit change in exf_init_runoff from [m/year] to [m/s]
1662    o mdsio:
1663      - i/o-vector change debugLevel from debLevA to debLevB
1664    
1665    checkpoint56b_post
1666    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
1667      is called from DO_THE_MODEL_IO
1668      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
1669      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
1670      - clean up PTRACERS_WRITE_TIMEAVE a little
1671    o add another verification experiment that tests both the cfc-pkg and
1672      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
1673      reactive tendencies treated inline with regular timestepping
1674    o testreport previously did a lousy job of comparing small numbers, so
1675      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
1676      implemented in the little c-progam tmp_cmpnum.c which is embedded in
1677      testreport.
1678    o ptracers_monitor: bug fix for MPI
1679    
1680    checkpoint56a_post
1681    o GCHEM: finish reorganizating the package
1682      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
1683        (introduces another 3D-array for each passive tracer, but only if
1684        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
1685        gchemTendency is not needed because the timestep is done separately)
1686      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
1687      - GCHEM is now---more or less cleanly---separate from PTRACERS
1688      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
1689        so clear to me how that should be done in a general way.
1690    o CFC: improve formatting of output in CFC_ATMOS
1691    o PTRACERS:
1692      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
1693        that ALL experiments with ptracers enable can be checked. This makes
1694        GCHEM_MONITOR obsolete.
1695      - include a runtime parameter PTRACERS_monitorFreq that defaults to
1696        monitorFreq
1697      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
1698    o add PTRACERS (PTR0[1-5]) to testreport output
1699    o exf_check_range:
1700      * default changed to .TRUE.
1701      * will check values for niter0 if debLevA, every timestep if debLevB
1702      * STOP in exf_check_range if 'out of range'
1703      * range chosen generous to allow for potential extema
1704      TBD: a version with stricter range
1705           permitted range would be runtime parameters
1706    o GMredi:
1707      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
1708      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
1709      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
1710    o GCHEM:
1711      - move call to GCHEM_FORCING_SEP, so that it is now called before
1712        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
1713      - introduced a useGCHEM runtime flag and applied it everywhere.
1714      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
1715        this flag is now only visible within GCHEM-pkg routines.
1716      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
1717        be replaced by a 3D array that is computed before thermodynamics; for
1718        this, the tracer ID iTracer had to be included into the parameter list
1719        of ptracers_forcing
1720      - set up forward_step to call gchem_forcing, that will replace
1721        gchem_forcing_int in ptracers_forcing
1722      - cleaning up
1723    o small cleaning of exch2: remove files that are also in eesupp/src
1724    
1725    checkpoint56
1726    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
1727    o mnc: cleanup "full" files--fixes out-of-memory problem
1728    o ECCO-GODAE
1729      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
1730      * fully merged and updated from SIO code
1731        windstress sign change affects
1732        - exf_inscal_[u/v]stress
1733        - sign of xx_tau[u/v] adjustments
1734        - signs in cost_scat
1735      * ctrl_get_gen: avoid update of tau[u/v] for first few days
1736      * natl_box_adjoint updated and compressed
1737      * 2-level checkpoint switch added
1738        (tested in EXP. 1 of natl_box_adjoint)
1739      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
1740    o SVD
1741      * first complete, non-hacked version for SVD calculations
1742      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
1743        performed via direct access files admtlm_vector.it????
1744        (via ctrl_[un]pack)
1745      * optimcycle is used for ARPACK iteration counter
1746        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
1747      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
1748        and add linear transforms where necessary
1749      * controls are initial/final SST, SSS (can be extended; need to check
1750        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
1751    o mdsio: filename info to both stderr, stdout
1752    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
1753      from sign change
1754    
1755    checkpoint55j_post
1756    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
1757      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1758    o add consistent build directories and .cvsignore files to verification
1759    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
1760    o make all subroutines 30 or less characters in length for certain older
1761      compilers to work (a thorough search only turns up two routines in
1762      pkg/ptracers)
1763    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
1764      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1765    
1766    checkpoint55i_post
1767    o change arrays for total vertical diffusivity (2.D if explicit,
1768      3.D if implicit) ; each ptracer uses its own background value.
1769    o added mnc/NetCDF output capability to ocn_compon_interf
1770      - added bits to verification/cpl_aim+ocn so that it can run on
1771        ITRDA and other clusters without the mpirun "-wd" option
1772    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
1773      configuration
1774    o give MNC the ability to create additional files rather than
1775      exceeding a specified file size limit "MNC_MAX_FILESIZE"
1776      - the default is just less than 2GB which is a practical limit
1777        on many systems
1778    o Compute the non-local term using either KPP vertical diffusivity (=default)
1779       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
1780    
1781    checkpoint55h_post
1782    o add verification test "vermix"
1783    o remove all the *_ioinc flags and replace with the single global
1784      outputTypesInclusive flag
1785    o allow to set a vertical profile of vertical diffusivity for T & S
1786    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
1787    o useMNC moved from data.mnc to data.pkg
1788    
1789    checkpoint55g_post
1790    o Renaming carbon AD experiments to comply with testreport conventions
1791    o Updating adjoint of Held-Suarez hs94.1x64x5
1792    o Fixing directives for non-ECCO forward_step, after ECCO directives
1793      have been fixed to avoid recomp. of do_oceanic_phys
1794      Works well for global_ocean.90x40x15,
1795      but recomp. issue remains for carbon
1796    o Updating adjoint output for natl_box_adjoint after
1797      pkg/ecco has been modified (see taga c55d_post)
1798    
1799    checkpoint55f_post
1800    o rename to timeave_init_fixed
1801    
1802    checkpoint55e_post
1803    o some delicate re-shuffle of store directives to avoid one
1804      extra call of do_oceanic_physics
1805      affects ecco_the_main_loop.F, do_oceanic_physics.F
1806      checkpoint_lev1_directives.h
1807    o NB: this may break global_ocean adjoint temporarily,
1808      but it is clear how to fix it. Will do later, need this now.
1809    
1810    checkpoint55d_post
1811    o ECCO specific cost function terms (up-to-date with 1x1 runs)
1812    o ecco_cost_weights is modified to 1x1 runs
1813    o modifs to allow observations to be read in as
1814      single file or yearly files
1815    o enable to read exf forcing fields as either
1816      single file or yearly files (flag useExfYearlyFields)
1817    checkpoint55d_pre
1818    
1819    o switch between 2-level and 3-level checkpointing
1820    o add ability of MNC to write local and "partial" (eg. 2D slices where
1821      the full 3D field is never actually stored) arrays to NetCDF files
1822      with the correct (that is, the complete multi-dimensional) set of
1823      array indicies
1824      - used in mom_vecinv() to write the diagFreq output
1825      - tested (demonstrated) in verification/aim.5l_cs
1826    o further mnc-ification
1827      - add verification/lab_sea to the list with mnc setups
1828      - fix undefined mnc v-names in cd_code
1829      - add kpp to mnc output (both snapshot and timeave)
1830    o non-hydrostatic code
1831      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
1832        in calc_gw.F
1833      - defaults to viscAh
1834      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
1835        friction or Leith) in non-hydrostatic mode, as long as there is
1836        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
1837    o pkg/cost
1838      extend simple cost functions to treat time mean quantities
1839      (T,U,V) via cost_accumulate_state from cost_tile
1840    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
1841        be 2 times larger than the minimum size the advection scheme requires.
1842        now get a perfect conservation of salt in advect_cs test-exp (updated)
1843    o GGL90 (Gaspar's TKE mixed layer)
1844      - add horizontal diffusion of TKE, requires exchanges in
1845        do_fields_blocking_exchanges, horizontal diffusivity is zero by
1846        default. In OPA there is no horizontal diffusion of TKE but the
1847        mixing coefficients are computed from a horizontal average of TKE of
1848        6 points or so. I think that diffusion has a little more physical
1849        justification.
1850      - clean up ggl90_calc in the hope of reducing memory usage (this hope
1851        was in vain)
1852      - mask tke-variable in ggl90_init
1853    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
1854    o fix biharmonic diffusion on CS-grid.
1855    o more obcs stuff
1856      - added obcs_external_fields_load as an alternative to the EXF-pkg option
1857        for reading boundary values. This routine is called from
1858        obcs_prescribe_read
1859      - updated obcs_check
1860      - changed sponge layer relaxation parameter units for days to seconds
1861      - turned off sponge layer by default
1862      - changed argument list of OBCS_CALC to myTime+deltaTclock
1863      - fixed about 35 bugs in obcs_external_fields_load
1864    
1865    checkpoint55c_post
1866    o obcs stuff
1867      - new runtime flags useOBCSprescribe, useOBCSbalance
1868      - re-arranged obcs_calc
1869      - moved exf_getobcs to obcs_prescibe_read
1870        obcs_prescibe_read is called after ORLANSKI stuff
1871        and independent of it (executable can contain all).
1872      - updated obcs_check
1873      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
1874        These may be necessary only if tangential velocities are
1875        prescribed at OB, not sure, needs testing.
1876    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
1877      which simplifies the calls and passes the ifc check-bounds test
1878    
1879    checkpoint55b_post
1880    o add a 2D scalar, Z location, exchange_2 routine.
1881    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
1882      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
1883      affects advect_cs results (for the wrong reason): update output.txt
1884    o use a more standard discretization for biharmonic viscosity ;
1885     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
1886      affects results of dome set-up: update output.txt
1887    o fix gad_advection.F (CubedSphere part), back to version 1.23
1888    o fix bug in mom_vi_del2uv.F (CubedSphere part).
1889    
1890    checkpoint55a_post
1891    o merged code to
1892      * prescribe/read time-dependent open boundaries
1893        (works in conjunction with exf, cal)
1894      * sponge layer code for open boundaries
1895      * each boundary N/S/E/W now has its own CPP option
1896        (healthy for the adjoint)
1897    
1898    checkpoint55
1899    o up-to-date adjoint of previous breaks
1900      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
1901      - global_ocean_ebm: adjoint still needs fix (TLM ok)
1902      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
1903      - carbon: * remove tr1-related adjoint verification
1904                * add ptracer as control variable
1905    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
1906      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
1907    
1908    checkpoint54f_post
1909    o in verification/carbin/ remove experiment related to
1910      ALLOW_PASSIVE_TRACER (array tr1 etc)
1911      code_ad/ input_ad/ results_ad
1912    
1913    o add two new packages
1914      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
1915        + subject to optimization (memory)
1916      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
1917        + subject to reordering (many GOTOs in the original code)
1918        + so far opps is called for every (i,j) point, and then operates in
1919          the vertical; one may want to reorder the scheme in order operate in
1920          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
1921          fields)
1922    o overhaul of IO so that we now have flags for MDSIO and/or MNC
1923      - all verification tests compile and run with linux_ia32_g77
1924      - defaults are compatible with current input files--nothing
1925        should change if you were not previously using MNC
1926      - MNC output has been added in numerous places (eg. timeave)
1927        but there are still a few writes not yet do-able with MNC
1928        (this is in progress)
1929      - flags now allow for either/or/both use of MDSIO and MNC and
1930        documentation will soon follow
1931      - numerous small formatting cleanups for ProTeX
1932    o add version info (via BUILD_INFO.h) to MNC and stdout
1933    
1934    checkpoint54e_post
1935    o add two new packages
1936      - pp81 (Packanowski and Philander, 1981), Richardson number and
1937        stratification dependent mixing
1938      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
1939      - these scheme operate in a similar manner as KPP (without ghat, of
1940        course), however there is only one diffusivity that is used for both
1941        temperature and salinity (and passive tracers)ç
1942    o add offline package
1943    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
1944      provided by Stephanie Dutkiewicz
1945    o genmake2: add ability to search for C compilers and cleanup test output
1946      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
1947    
1948    checkpoint54d_post
1949    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
1950    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
1951      leading to additional shift by 5 days each year of integration
1952       (i.e. leading to considerable offset over the years)
1953    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
1954    o start with no AB and no initial filtering (staggerTimeStep):
1955      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
1956    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
1957      (external loading & cpl import/export stay in forward_step.F)
1958    o update coupling interface to work with new staggerTimeStep
1959    o change MDSIO ptracers_pickup.
1960    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
1961    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
1962    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
1963    
1964    checkpoint54c_post
1965    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
1966      this affects (truncation error) output.txt of test-exp:
1967       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
1968    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
1969    o change Qnet to always be the net heat flux, (+upward).
1970      affects (truncation error) output of natl_box exp.: updated
1971    o define the max number of passive tracers in PTRACERS_SIZE.h
1972    o start to test mnc routinely in exp0
1973    o add sea-ice loading (sIceLoad) as a new forcing field.
1974    
1975    checkpoint54b_post
1976    o add testreport "-j JOBS" option for parallel builds (tested and pretty
1977       impressive on Altix and Opteron systems)
1978    o diagnostics can now write NetCDF files through the mnc package
1979    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
1980    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
1981    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
1982      affects (truncation error) output of lab_sea & natl_box exp.: updated
1983    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
1984    
1985    checkpoint54a_post
1986    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
1987    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
1988    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
1989    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
1990      + internal_wave (shift in writing cg2d_ini_res)
1991    checkpoint54a_pre
1992    
1993    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
1994      - modified verification/lab_sea and natl_box_adjoint accordingly
1995    
1996    checkpoint54
1997    checkpoint53g_post
1998    o prepare splitting of thermodynamics: store convect.counter in common block
1999    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
2000      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
2001    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
2002    o new parameter "nShapS": allow to treat differently S from T (nShapT)
2003    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
2004    o restore adjointability
2005    
2006    checkpoint53f_post
2007    o modifications that affect AIM experiment results (update output.txt):
2008      - no advection of S at top interface Nr (pkg/generic_advdiff)
2009      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
2010    o AIM pkg:
2011      - include stability function into surf.Flux derivative relative to Tsurf
2012      - calculate clear-sky radiation & surface temp. change (for diagnostics)
2013    
2014    checkpoint53e_post
2015    o merged cylindrical coord configuration
2016    o added rotating_tank experiment
2017    checkpoint53e_pre
2018    
2019    checkpoint53d_post
2020    o faulks upgraded: re-generate output.txt that have changed:
2021       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
2022    o Added Bryan and Lewis, 1979, vertical diffusivity profile
2023    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
2024    o added Sadourny discretization of Coriolis
2025      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
2026      - re-enabled use of omega3 (useAbsVorticity)
2027    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
2028      vector-invariant equations
2029      - note: does *NOT* yet use same variable visc. for no-slip BC's.
2030    o recoded the lateral boundary conditions for non-hydrostatic w, this time
2031      hopefully without new bugs
2032      - still to do: biharmonic friction for non-hydrostatic w
2033    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
2034    o regenerated output for global_ocean_ebm (using -ieee)
2035    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
2036      of mom_common/
2037      - simple re-arrangement of instructions within computing loop
2038    checkpoint53d_pre
2039    
2040    checkpoint53c_post
2041    o new version of coupler for AIM+thSIce and Ocean models
2042     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
2043     - land: change Evaporation of snow
2044     - aim with thSIce: fix bug in snow-precip.
2045    o changes to calc_gw.F
2046     - bug fix for w^2 term near the bottom boundary
2047     - (hopefully) improve the lateral slip boundary condtions for use with
2048        partial/looped cells
2049      - because the bug fix changes two verification experiments anyway (exp5
2050        and plume on slope), change the lateral boundary condition from half slip
2051        to the value of no_slip_sides
2052    o ebm package wasnt quite up to the parallel task. Fixed that.
2053    o Adjoint of EBM package + verification
2054      * TLM OK
2055      * ADM not sufficient accuracy yet (needs further testing)
2056    
2057    checkpoint53b_post
2058    o Commiting new energy balance model to repository
2059      * package is pkg/ebm
2060      * verif. is verification/global_ocean_ebm
2061      * references are in ebm_driver.F
2062    C      * X. Wang, P. Stone and J. Marotzke, 1999:
2063    C        Global thermohaline circulation. Part I:
2064    C        Sensitivity to atmospheric moisture transport.
2065    C        J. Climate 12(1), 71-82
2066    C      * X. Wang, P. Stone and J. Marotzke, 1999:
2067    C        Global thermohaline circulation. Part II:
2068    C        Sensitivity with interactive transport.
2069    C        J. Climate 12(1), 83-91
2070    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
2071    C        Destabilization of the thermohaline circulation
2072    C        by atmospheric eddy transports.
2073    C        J. Climate 7(12), 1870-1882
2074    o Will need long integration testing.
2075    checkpoint53b_pre
2076    
2077    o created pkg/mom_common in preparation for variable viscosity code
2078    o renamed and split ini_mnc_io
2079    o pkg/land: only liquid water can diffuse or run-off
2080    o AIM using land: soil wetness availability account for snow
2081    o added printMapIncludesZeros to EEPARMS namelist
2082    
2083    checkpoint53a_post
2084    o restore TAMC compatiility for exf_constants.h
2085      (no usage of _d in .h)
2086    o Additional storing in KPP in an attempt to fix
2087      TAMC problem with adjoint of KPP code.
2088      (no success...)
2089      Identical code works fine with TAF.
2090    o Fixed verification/natl_box_adjoint experiments.
2091      Initial conditions for Experiments 4 and 5 are now
2092      set to "SEAICE_initialHEFF=0", which is more reasonable,
2093      and hence gives results closer to that of Experiment 2.
2094      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
2095    
2096    checkpoint53
2097    o stable checkpoint with up to date adjoint
2098      TLM tests only run for 1st grdchk at the moment. Its unclear if
2099      this is a code problem or a problem with resetting code for g_
2100      variables that is being autogenerated wrong.
2101      Otherwise:
2102       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
2103       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
2104         are both still in chaos following their security messes.
2105    
2106    checkpoint52n_post
2107    o various build (mostly genmake2) changes including:
2108      - ability to build/run more easily within Cygwin and MacOS X
2109      - more complicated Makefiles with a stronger dependence on Gnu Make
2110    o pkg/seaice modifications
2111      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
2112        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
2113        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
2114      - changed proxy for geostrophic velocity and updated
2115        verification/lab_sea/results/* accordingly
2116      - removed ADI dynamic solver from pkg/seaice
2117      - replaced all occurrences of 1/CSTICE or 1/CSUICE
2118        they caused a segmentation fault under certain circumstances
2119      - removed unused field WATR
2120    o bug fix in exf-package:
2121      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
2122         now reflect that.
2123    o small fixes in the cal-package:
2124      - set reference date to first of January for the 'model'-calendar
2125      - failing of cal_CheckDate in cal_FullDate now actually results in a
2126        warning
2127    o small modifications in exf-package to increase flexibility:
2128      - change climtempfreeze from a constant to a runtime parameter that
2129        is specified in data.exf_clim (default = -1.9)
2130      - introduce runtime parameter windstressmax (default = 2.0) that is
2131        specified in data.exf
2132    o fix in pkg/thsice:
2133      - update Evap (Tsf changes) to be consistent with Latent heat flux
2134      - maintain snow precipitation unchanged (even if Tsf >=0).
2135     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
2136    
2137    checkpoint52m_post
2138    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
2139      this does not change any of the results, because myIter=0 in swfrac always
2140      lead to jwtype=2 (the default anyway), but the call makes little sense
2141      as a default
2142    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
2143    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
2144      atmospheric model (AIM) to use it ; add a "slab ocean" component.
2145    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
2146    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
2147    o extending useSingleCpuIO option to work with new exch2 I/O format
2148      - old-style, missing-tile I/O is still accessible by defining CPP
2149        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
2150    o monitor package can write to NetCDF files and/or STDOUT
2151    o fix re-definition bug in MNC_GRID_INIT_ALL()
2152    o doc/api_reference added
2153      - a framework for building an API Reference Manual using all
2154        the "protex" comments embedded in the code
2155      - see pkg/generic_advdiff, pkg/mnc for examples
2156    o MNC:
2157      - make myThid the last argument for all subroutines
2158      - new default for the grid files: NO halos
2159      - add useMNC and other run-time flags
2160      - separate per-file-group handling of the unlimited dimension
2161      - early initialization of MNC w/ flags read at the eeboot stage
2162        and lookup tables set in initialize_fixed
2163      - write all MNC output to a freshly-created directory
2164    o thermodynamics sea-ice (thsice) is now tested with testreport.
2165    o test exp. advect_cs: use the standard cs32 grid ; update output.
2166    o Added functionality to grdchk:
2167      pick global i,j,k position (or nearest wet) where to perform check.
2168    
2169    checkpoint52l_post
2170    o new land formulation:
2171      a) use ground enthalpy as prognostic variable to ensure exact
2172         energy conservation.
2173      b) account for water temperature and for latent heat of freezing
2174         in all processes (rain, run-off, ground storage)
2175      c) compute surface and ground temperature implicitly.
2176    o aim_v23 modification for new land model:
2177      a) Treat separately land / ocean / sea-ice surface fluxes
2178         to allow implicit computation of land & sea-ice surface temp.
2179      b) add snow precipitation.
2180    checkpoint52l_pre
2181    
2182    o fix problem (when 1 tile is empty) in min/max monitor.
2183    o fix bug in timeAve (u,vZetatave in common block)
2184    o no restoring terms under ice for pkg/seaice
2185    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
2186    o bug fix for pkg/seaice pickups
2187    o change MNC call locations and add coordinate attributes
2188    o mask vorticity at the corner ; affects global_ocean.cs output
2189    o fix ini_curvilinear_grid ; test CS experiments with mpi
2190    o aim.5l_cs: modify sea-ice fraction input file ; update output
2191    o exf: Adding simple range check routine for exf fields after read
2192    
2193    checkpoint52k_post
2194    o removed top-level directory "diags"
2195      - we migrated these functions to pkg/timeave a long time ago
2196    o fixed bug introduced in pkg/monitor
2197    o accuracy ctrlprec = 32 insuffient for gradient checks using
2198      averaged fields (I/O via cost_averages)
2199      -> use ctrl.h in active_file*.F to control I/O precision.
2200    o paramter list of CALL ADTHE_MAIN_LOOP
2201    o added initial do_the_model_io to ecco
2202    o set all ...Freq to zero after cost_final
2203      taveFreq, dumpFreq, pChkptFreq
2204    o MAIN and ECCO differentiability restored
2205    
2206    checkpoint52j_post
2207    o fix nchklev in tamc.h for global_ocean...
2208    o Bringing flow and store directives up-to-date
2209    o Really weird thing!
2210      call do_the_model_io from the_main_loop with parameters
2211      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
2212      TAF places a faulty re-call of initialise_varia
2213      after cost_final call which should not be there!
2214    checkpoint52j_pre
2215    
2216    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
2217      error messages
2218    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
2219    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
2220      debug output
2221    o modfied mdsio_writefield.F to handle non-global files under exch2
2222    o update AIM Cubed-Sphere exp (aim.5l_cs):
2223      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
2224    o update AIM Equatorial Channel exp:
2225      use standard aim_v23 pkg and change the SST fields to be more realistic.
2226    o globalFile now works with exch2
2227    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
2228      mon_vort3.F to make exch2 friendly with >1 tile per cube face
2229    o limit timeave output for hi-res integrations
2230    
2231    checkpoint52i_post
2232    o removed CPP_EEOPTIONS.h from verification/*/code
2233    o updated the tiling for global_ocean_pressure
2234    checkpoint52i_pre
2235    
2236    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
2237      the old pkg/aim).
2238    
2239    checkpoint52h_pre
2240    o shortened offending lines in exch2_send_rx?.template
2241    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
2242    o genmake2: add build & execute test for NetCDF code
2243    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
2244      old grid files, moved CPP_EEMACROS.h to pkg/exch2
2245    o added useSingleCPUIO flag to monitor.F and mon_out.F
2246    o added temporary hack for sea-ice dynamics on the cube:
2247      metric terms are ignored and it is assumed that
2248      there is no sea-ice on cube faces 1, 2, 4, and 5.
2249    
2250    checkpoint52f_post
2251    o added exch2 cube routines to pkg/exch2
2252    o modified hs94.cs-32x32x5 to use it
2253    o added new grid files to hs94.cs-32x32x5
2254    checkpoint52f_pre
2255    
2256    checkpoint52e_post
2257    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
2258      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
2259    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
2260      to work with implicit vertical advection and AB ;
2261    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
2262    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
2263     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
2264    checkpoint52e_pre
2265    
2266    o fix bug in impldiff when Nr=1 or Nr=2.
2267    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
2268    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
2269    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
2270      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
2271    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
2272    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
2273    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
2274    
2275    checkpoint52d_post
2276    o re-tiled many expts to allow comparison in multi-processor mode
2277      - updated output accordingly
2278      - changed hs94.128x64x5 to use intial T from file rather than use the
2279        random number generator
2280    o add infrastructure in model routines for fizhi and gridalt packages
2281    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
2282    o changes to permit hi-res, cubed-sphere, configuration
2283      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
2284      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
2285      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
2286        of surface winds for the cube
2287      (A verification experiment, based on global_ocean.cs32x15, but with
2288       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
2289       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
2290       complete with example surface forcing files and matlab scripts to look
2291       at the output and compare it with that of global_ocean.cs32x15.)
2292    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
2293       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
2294       to conform to the common rule.
2295    o check-in the first version of the coupler + interfaces for multi-components
2296       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
2297       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
2298       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
2299       - ocean and atmos. share the same horizontal grid (no interpolation).
2300       - exchanges between component and coupler is done in forward_step
2301    o new verification experiment, cpl_aim+ocn:
2302       coupled ocean - AIM atmosphere on cs32 grid.
2303    
2304    checkpoint52d_pre
2305    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
2306    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
2307    
2308    checkpoint52c_post
2309    o Fixing OPTIONS files for use of exf:
2310      - ALLOW_ECCO not needed
2311      - ECCO_CPPOPTIONS.h should not be included from
2312        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
2313        as has been the case in the past
2314      - All cal/exf related options are currently set in
2315        single header file. Should remain so until we
2316        agree on a consistent new policy.
2317    o Removed all CPP options for cal package.
2318      cal has no more CPP options.
2319    o modified STOREs in GAD_ADVECTION
2320    o corrected key comp. for passkey
2321    
2322    checkpoint52b_post
2323    o new version: "thsice" of thermodynamic sea-ice pkg:
2324     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
2325     - modify fluxes but do not change theta directly;
2326     - light cleaning of bulk_force pkg (still needed with thsice).
2327     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
2328       + output_thsice.txt to test thsice & bulk_force pkgs.
2329    o put back grid & coriolis monitor output.
2330    checkpoint52b_pre
2331    
2332    o call "do_the_model_io" at the beginning (=> dump initial state)
2333    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
2334    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
2335      (need info on NUMBER_OF_PTRACERS)
2336    o missing PTRACERS headers in some routines
2337    o default tamc.h in pkg/autodiff supposed to crash
2338      to ensure proper customization
2339    
2340    checkpoint52a_post
2341    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
2342      - moved surfaceTendencyTice from pkg/seaice to main code
2343      - subroutine FREEZE_SURFACE now limits only surface temperature
2344        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
2345        => new output.txt for global_ocean.cs32x15 & global_with_exf
2346      - keep the old version of FREEZE for backward compatibility;
2347        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
2348      - corresponding modifs for TAF directives
2349    o added surface flux output variables to TIMEAVE_STATVARS
2350    o time-averaged output for pkg/ptracers
2351    o fix problem with ECCO-related divided adjoint
2352      snapshot file was missing some ad-variables,
2353      but no warning issued by TAF
2354    
2355    checkpoint52a_pre
2356    o some bug fixes for #undef REAL4_IS_SLOW
2357    
2358    checkpoint52 = ecco_c52_e35
2359    o after testing adjoints of checkpoint51u_post
2360    
2361    checkpoint51u_post
2362    o this is the post-merge tag of the ecco-branch
2363      (needs another clean checkout and re-testing)
2364    o various natl_box_adjoint configs and results
2365      but no input fields
2366    o obcs adjoint not yet merged!
2367    o adding ECCO global 1x1 and 2x2 degree configs
2368    o updated/extended some store directives for seaice
2369    o pkg/ecco now containes ecco-specific part of cost function
2370    o top level routines the_main_loop, forward_step
2371      supersede those in model/src/
2372      previous input data.cost now in data.ecco
2373      (new namelist ecco_cost_nml)
2374    o in ctrl/ cleaned some cross-dependencies and updated CPP options
2375    
2376    checkpoint51t_post
2377    o this is the pre-merge tag of the ecco-branch
2378    
2379    checkpoint51s_post
2380    o cleanup: removed various obsolete #define-s
2381    o pkg/grdchk
2382      - renamed 'ph-grd 3' to 'grad-res'
2383      - merged from ecco-branch
2384        (remaining bug fixes for obcs gradient checks)
2385      - additional high-precision output for testreport
2386        (grep for 'precision_grdchk_result')
2387    
2388    checkpoint51r_post
2389    o cleaned up or removed CPP_OPTIONS.h files
2390    o updated results for some of the tests to reflect the new
2391      optfiles (-ieee: -O0 instead of -O3)
2392    
2393    checkpoint51q_post
2394    o cd_code:
2395      - moved cd_scheme.F -> cd_code_scheme.F
2396      - separate read_checkpoint from cd_code_ini_vars.F
2397      - separated cd_code part from write_checkpoint
2398      - updated AD_SOURCE, generated .flow
2399      - added CD_CODE_VARS.h to the_main_loop
2400      - Moving cd_code specific store dir.s to pkg/cd_code
2401    o ctrl package totally restructured
2402      - pack/unpack now optional and decoupled from
2403        xx_/adxx_ I/O
2404      - ctrl_pack/unpack cleaned
2405        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
2406      - confined inclusion of AD_CONFIG.h to where necessary.
2407    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
2408    
2409    checkpoint51p_post
2410    o create initial cd_code package
2411      - WARNING: the initialization of fields within packages
2412        is broken because INI_FIELDS (where READ_CHECKPOINT is
2413        called) is called *before* PACKAGES_INIT_VARIABLES.
2414        This seems to be backwards since
2415        1) its important to initially zero the entire field including
2416           the "halo" region
2417        2) zeroing needs to be done *before* reading pickup info
2418           and the pickup call might or might not happen in any
2419           particular run
2420      - this needs an overhaul for R2
2421    o cleanup verification/*/code/GMREDI_OPTIONS.h
2422    o cleanup testreport
2423    
2424    checkpoint51o_post
2425    o bringing AD-related verif's up to date with genmake2
2426      - carbon/
2427      - global_ocean.90x40x15/
2428      - hs.94.1x64x5/
2429      - (front_relax/ )
2430    o (more) consistent directory structure for AD-related verif.'s
2431    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
2432    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
2433    o bug fix in find_alpha.F for MDJWF:
2434      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
2435        change rho -> rho-rhoConst
2436      - replace call find_rho to find_rhonum
2437    o initialisation of rFlx extended to full array (required by TAF)
2438      and shifted to thermodynamics
2439    o removed PTRACERS.h in ptracers routine
2440    o added surfacetendencyPtr to S/R parameter list pracers_forcing
2441    o Correcting initialisations for fVerU, fVerV.
2442    o helping TAF to recognize dependency on kUp for
2443      fVerU, fVerV
2444    o Replacing delZ by delR in pkg/ctrl/
2445    checkpoint51o_pre
2446    
2447    o undid all of cp51 pending some cleanups and discussion
2448    o added the [#include "AD_CONFIG.h"] statement to all files that need
2449       it for adjoint/tl #defines
2450     o re-worked the build logic in genmake2 to support AD_CONFIG.h
2451     o removed tools/genmake since it no longer works
2452    
2453    checkpoint51n_post
2454    o modifications to make FREEZE flux visible to pkg/kpp
2455      - moved surfaceTendencyTice from pkg/seaice to main code
2456      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
2457      - subroutine FREEZE now limits only surface temperature
2458        (this means new output.txt for global_ocean.90x40x15,
2459         global_ocean.cs32x15, and global_with_exf)
2460    o added surface flux output variables to TIMEAVE_STATVARS
2461    
2462    checkpoint51n_pre
2463    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
2464    o added [#include "AD_CONFIG.h"] to all files that use the following
2465      defines:
2466      - ALLOW_ADJOINT_RUN
2467      - ALLOW_TANGENTLINEAR_RUN
2468      - ALLOW_ECCO_OPTIMIZATION
2469    
2470    checkpoint51m_post
2471    o incorporating changes to get TAMC/TAF working in genmake2
2472      - added new TAMC/TAF targets to the Makefile
2473      - various cleanups related to package handling
2474      - these changes should have no impact on the forward model
2475    
2476    checkpoint51l_post
2477    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
2478     - faster algorithm for cal_addtime.F
2479     - higher precision arithmetic, where needed
2480     - pkg/exf *startdate variables changed from calendar date to
2481       model integration time
2482    
2483    checkpoint51l_pre
2484    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
2485    o enable to apply restoring on S & T only in a latitude band.
2486    o update output (external_forcing_surf modif. change truncation errors)
2487       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
2488    
2489    checkpoint51k_post
2490    o change default to: useNHMTerms=.FALSE.
2491     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
2492       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
2493     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
2494        exp1, ideal_2D_oce
2495     - change data file of oceanic exp (leave the results unchanged for now)
2496       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
2497    o set gravitySign automatically according to the vertical coordinate used
2498      (and change sign: back to "logical" value: +1 when R increases downward)
2499    o added an include barrier to the default CPP_OPTIONS.h and
2500      removed the #include "PACKAGES_CONFIG.h" from it
2501    o fix a bug in mom_fluxform (from chk51j_post)
2502    
2503    checkpoint51j_post
2504    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
2505    o adjusted some flow directives (dynamics, thermodynamics)
2506    o added cubed-sphere case to test cost function
2507    o heckpoint_lev?_directives.h now include
2508      pkg-specific directives, whenever those are enabled.
2509    o Moving pkg-specific flow directives to corresponding pkg
2510      Moving pkg-specific differentiation list to corresponding pkg
2511      Moving pkg-specific checkpoint-lev storing to corresponding pkg
2512      ---> conventions are
2513           - pkg_ad.flow
2514           - pkg_ad_diff.list
2515           - pkg_ad_check_lev?_dir.h
2516    
2517    checkpoint51i_post
2518    o merge of the branch-genmake2
2519      - knowingly breaks the older genmake
2520      - automatic generation of all ALLOW_${PKG_NAME} defines
2521      - new testreport supersedes older testscript
2522    o large number of package inclusion and header cleanups
2523    checkpoint51i_pre
2524    
2525    o new output for adjoin of global ocean vector invariant
2526    o fix for checkpoint of thermodynamic seaice and bulk_force
2527    o Steph gchem various cleanups
2528    
2529    checkpoint 51h_pre
2530    o fixed some single quotes
2531    o modify gchem pkg to be more versatile
2532    o modifications to clean up dic pkg
2533    o add pkg/cfc
2534    
2535    checkpoint51g_post
2536    o provide links for ARPACK and ADM*TLM
2537    o start removing verification/vero/
2538    o update AD-related stuff
2539      (in particular some IF-statements in model/src/ routines)
2540    o adding to verification/global_ocean.90x40x15/ adjoint of
2541      vector invariant setup
2542    
2543    checkpoint51f_post
2544    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
2545    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
2546      of tracer Green's fucntions for ocean inversion project.
2547    
2548    checkpoint51f_pre
2549    o Added on-the-fly spatial interpolation capability
2550        "USE_EXF_INTERPOLATION" to pkg/exf.
2551      - This is a temporary Cartesian-grid hack until
2552        the super-duper ESMF coupler becomes available.
2553      - See verification/global_with_exf/README for usage example.
2554      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
2555        flags and modified pkg/seaice accordingly.
2556    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
2557        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
2558        non-local transport term.
2559    
2560    checkpoint51e_post
2561    o pkg/mom_vecinv:
2562      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
2563      - add time-ave diagnostic of vorticity advection.
2564    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
2565    o atmospheric geopotential: - include water vapor effect;
2566                                - use p^kappa in p* scaling.
2567    o land pkg: read initial state from files.
2568    o AIM : add stratospheric drag in the upper level
2569    
2570    checkpoint51d_post
2571    o change function ILNBLNK (=> last non-blank char.) to return zero
2572      (instead of the string length) when the string. char is empty
2573    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
2574    o modif's to restore TAMC compatibility
2575      - avoid "_d" constructs in PARAMETER declarations
2576      - avoid interrupting lines by comment lines
2577    o Use cluster local disks for purely local I/O
2578      vs. globally visible disks needed for ctrl stuff
2579      (merged from ecco-branch)
2580      - new active_file_loc... and mdsio_..._loc routines
2581      - affected packages: autodiff, ctrl, grdchk, mdsio
2582    
2583    checkpoint51c_post
2584    o introducing integer flag debugLevel
2585      - debLevZero: suppress all output
2586      - debLevA: standard
2587      - debLevB: equivalent to current debugMode=.TRUE.
2588    o introducing pathname variable mdsioLocalDir for mdsio
2589      that can be specified at runtime
2590      (relevant for cluster I/O to local disk)
2591    `
2592    >>>checkpoint51b_post
2593    adjoint of ptracers
2594    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
2595    o extended state in checkpoint_lev?, etc.
2596    o alternative ctrl/cost with tr1 or ptracer
2597    o new comlev1_bibj_ptracers
2598    o new ptracers.flow
2599    o made ptracers_forcing same as external_forcing_s
2600    o added verification for adjoint with ptracers
2601      - adm. grdchk fail so far
2602      - tlm. grdchk OK
2603      - checked tapelev/comlev recomputations: OK
2604    <<<checkpoint51b_pre
2605    
2606    checkpoint51a_post
2607    o added code for biogeochemistry package
2608      - new pkgs: dic, gchem
2609      - new subroutine in ptracers
2610    o modify code for biogeo packages
2611      - in model/src and pkg/ptracers
2612    
2613    checkpoint51
2614    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
2615      - autodiff, ctrl, exf, grdchk, seaice
2616      kept separate packages
2617      - cost, ecco, obcs
2618    o updating verification/internal_wave, verification/lab_sea
2619      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
2620    
2621    checkpoint50i_post
2622    o Preparing next differentiable checkpoint and sync
2623      of MAIN vs. ecco-branch
2624      - 1st step: this one is differentiable
2625      - 2nd step: next(! not this) checkpoint will have updated packages
2626                  from ecco-branch)
2627    
2628    checkpoint50h_post
2629    o new package "land": provide surface BC for AIM.
2630    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
2631    o AIM: use true log-P extrapolation for near surface temp (= as in
2632        F.Molteni paper) ; update aim.5l_cs output.
2633    o New variable in PARM03 for more flexible pickups
2634    o somewhat cleaned package initialisation sequence for
2635      ctrl/ cost/ ecco/ in packages_... routines
2636    
2637    checkpoint50g_post
2638    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
2639      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
2640      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
2641        made the default because of faster convergence than ADI
2642    
2643    checkpoint50f_post
2644    o exf totally restructured
2645      - replaced all exf_set_ routines by one generic exf_set_gen.F
2646        and made sure it's still differentiable
2647      - split exf_getffields.F into new exf_bulkformulae.F
2648      - exf_inscal_/exf_outscal_ suffixes consistent with field names
2649      - updated adjoint/makefile and relevant verif. accordingly
2650    
2651    checkpoint50f_pre
2652     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
2653          + change Evap over land. (update aim.5l_cs output)
2654     o added missing .cvsignores and made uniform across expts
2655     o changed configuration of tidal_basin_2d expt
2656     o added pkg/debug functions for tracing code in fatal crashes
2657     o tidied pkg/monitor to use MONITOR_OPTIONS.h
2658     o new fn in pkg/monitor to stop model if solution grows too big
2659     o removed lots of single quotes from comments
2660    
2661    checkpoint50e_post
2662    o make KPP work with PTRACERS
2663     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
2664       nearly a copy of kpp_transport_s
2665     - there is no analogue to SurfaceTendencyS, so I have to use
2666       gPtr(of the surface layer) instead
2667    o add a new platform SunFire+mpi (SunFire 15000) to genmake
2668    checkpoint50e_pre
2669    
2670    checkpoint50d_post
2671    o change kpp output from multiple-record state files to single-record state
2672      files analogous to write_state.F
2673    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
2674      analogous to the cg2d-related output.
2675    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
2676      so that writing to internal file fn (with length 512) fails.
2677    checkpoint50d_pre
2678    
2679    checkpoint50c_post
2680    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
2681    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
2682    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
2683    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
2684    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
2685    
2686    checkpoint50c_pre
2687    Merging from release1_p13:
2688    o bug fix for pkg/seaice dynamic solver
2689    o Added SEAICE_initialHEFF to pkg/seaice
2690    
2691    checkpoint50b_post
2692    o store u*,v* in gU,V instead of in guNm1,gvNm1
2693    o in order to put the momForcing out of the Adams-Bashforth:
2694      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
2695      to timestep.F
2696    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
2697    o re-generate output for highly sensitive test-exp:
2698       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
2699    
2700    checkpoint50b_pre
2701    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
2702    o corrected CPP option mismatch in exf_Bulk... functions for case
2703      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
2704    
2705    checkpoint50a_post
2706    o Bug fix for merging between c50 and KPP.
2707      ikey was passed from thermodynamics to kpp_calc via
2708      common block rather than being recomputed in kpp_calc,
2709      in contradiction with new key itdkey.
2710      New key ikppkey created, and tamc.h headers updated.
2711    
2712    checkpoint50
2713    - 2nd step of merge with ecco-branch:
2714      merge changes in ecco-branch back into main trunk
2715    - bug fix in find_alpha
2716    - more storing in gmredi_calc_tensor.F, kpp_routines.F
2717    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
2718    - merged some sliced AD support routines
2719    
2720    checkpoint49
2721    merged from ecco-branch:
2722    o exf:
2723      - Enable initialisation of forcing fields to constant
2724        (runtime) values.
2725      - in exf_getffields.F
2726        Reduce i-/j-loop to interior domain, discarding overlaps.
2727        That also fixes wrong TAF-key computations for key_1, key_2
2728        with bulf formulae.
2729      - exf_init.F modify #ifdef for exf_init_evap
2730      - exf_getffieldrec.F, ctrl_getrec.F
2731        The following INT-usages are not safe:
2732          fldsecs  = int(fldsecs/fldperiod)*fldperiod
2733          fldcount = int(fldsecs/fldperiod) + 1
2734        and were modified.
2735    o autodiff: checkpoint_lev...
2736      - updated storing for bulk formulae (some arrays were missing)
2737      - added state for seaice package
2738      - synchronized with main branch
2739    o DIVA:
2740      Modif.s in
2741      - the_main_loop.F
2742      - the_model_main.F
2743      and added cost_final_restore.F cost_final_store.F
2744      o With these changes, it is possible to fully separate
2745        the first forward run to compute the cost function (mdthe_main_loop)
2746        and adjoint runs over individual DIVA intervals (adthe_main_loop)
2747        into separate model executions.
2748        This enables better tuning of DIVA to given queue sizes.
2749      o Loss of cost function value in consecutive DIVA runs is
2750        fixed by storing to 'costfinal' file.
2751      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
2752        beginning/end of adjoint integration is accounted for.
2753      The current changes apply to TAF-1.4.26.
2754      TAF has one remaining bug, requiring one manual change
2755      (see MITgcm manual).
2756    o cal: synchronized between MAIN and ecco-branch
2757    
2758    checkpoint48i_post
2759    o Changes to restore differentiability of code w.r.t. previous tag
2760      (mostly adding new routines to make list and replacing
2761      pressure by totPhiHyd).
2762    o Updated and merged grdchk package
2763      - has both ADM and TLM checks
2764      - works for single- and multi-proc.
2765      - output cleaned
2766      - worked successfully for parallel DIVA
2767    o genmake:
2768      - Adding -platform=SP4
2769      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
2770    o Modif. for DIVA:
2771      ctrl_unpack should not be called in intermediate DIVA interval.
2772      (similar thing would apply for active files such as
2773      tbar, sbar, psbar, which should not be reinitialised;
2774      only relevant for ecco-branch)
2775    
2776    checkpoint48h_post
2777    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
2778    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
2779    o Added SEAICE_initialHEFF to pkg/seaice
2780    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
2781    
2782    checkpoint48g_post
2783    --- EOS:
2784    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
2785      store total Potential in totPhyHyd for diagnostics & EOS.
2786    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
2787    --- Pressure/geopotential gradient:
2788    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
2789    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
2790      ( changes results of global_ocean_pressure )
2791    o NLFS + z-coord.: add eta*Rho' contribution.
2792    o accurate phiHyd when using interface-W at the middle between 2 centers
2793     ( changes results of ideal_2D_oce )
2794    o includes r* 2nd term in potential gradient.
2795    
2796    checkpoint48f_post
2797    Merging from release1_p12:
2798    o Modifications for using pkg/exf with pkg/seaice
2799      - improved description of the various forcing configurations
2800      - added basic radiation bulk formulae to pkg/exf
2801      - units/sign fix for evap computation in exf_getffields.F
2802      - updated verification/global_with_exf/results/output.txt
2803    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
2804      (SBO) core products, including oceanic mass, center-of-mass,
2805      angular, and bottom pressure (see pkg/sbo/README.sbo).
2806    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
2807      to avoid negative values in shallow regions.
2808      - updated verification/natl_box/results/output.txt
2809      - updated verification/lab_sea/results/output.txt
2810    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
2811    o Added useSingleCpuIO option (see PARAMS.h).
2812    o Updated useSingleCpuIO option in mdsio_writefield.F to
2813      work with multi-field files, e.g., for single-file pickup.
2814    o pkg/seaice:
2815      - bug fix in growth.F: QNET for no shortwave case
2816      - added HeffFile for specifying initial sea-ice thickness
2817      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
2818    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
2819      kpp_transport_t.F, forward_step.F, and the_main_loop.F
2820    o pkg/seaice:
2821      - adjoint-friendly modifications
2822      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
2823    
2824    checkpoint48e_post
2825    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
2826    o dynamics: change definition of computational domain & adapt mom_fluxform
2827      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
2828    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
2829        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
2830        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
2831        global_ocean.90x40x15 global_with_exf global_ocean_pressure
2832        inverted_barometer solid-body.cs-32x32x1
2833      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
2834    
2835    checkpoint48d_post
2836    o in preparation for r*:
2837     a) use pre-computed gradient of hydrostatic potential:
2838        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
2839     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
2840        => affects results of glob_oce_pressure (different truncation error)  
2841      update output.txt of ideal_2D_oce & global_ocean_pressure
2842    
2843    checkpoint48d_pre
2844    o in preparation for r*:
2845      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
2846      pass the 2 comp. of the grad. as arguments to momentum S/R.
2847      but for the moment, only used if it does not change the results.
2848    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
2849    
2850    checkpoint48c_post
2851    Modifications in treatment of initial flux forcing controls
2852    to avoid extra storing of flux fields.
2853    
2854    checkpoint48c_pre
2855    o Added tidal_basin_2d experiment (currently 1D!)
2856    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
2857    
2858  checkpoint48b_post  checkpoint48b_post
2859  o r* coordinate added in #ifdef NONLIN_FRSURF block.  o r* coordinate added in #ifdef NONLIN_FRSURF block.
2860   (modification to pressure gradient not yet implemented)   (modification to pressure gradient not yet implemented)

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