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revision 1.82 by mlosch, Mon Aug 19 14:21:30 2002 UTC revision 1.948 by jmc, Sun Jan 27 22:55:34 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 pkg/mypackage:
8      - add example of read/write pickup for state-var ;
9      - add entry points to the main code for state-vars diags & write-pickup.
10    o pkg/exf: rewrite of exf_getffieldrec.F to properly deal with year
11      transitions for useExfYearlyFields
12      - add new subroutine that determines the file to read from for
13        use*YearlyFields = .TRUE. and .FALSE.
14    o pkg/obcs/exf: add useOBCSYearlyFields (=.FALSE.) to obcs with exf in
15      analogy to useExfYearlyFields; rearrange obcs_prescribe_read: two new
16      subroutines (which could be generated from a template, because they are
17      almost identical), for now they are included in obcs_prescribe_read.F for
18      simplicity
19    o pkg/exf:
20      - add a little more diagnostic to exf_interp_read (in analogy to
21        mds_read_field, can be turned off with debugLevel < debugLevA=1)
22      - improve vectorizability of exf_interp for TARGET_NEC_SX, makes code
23        ugly but fast by unrolling short inner loops, inserting a unroll=8
24        directive in routine lagran, and splitting a loop and making do while the
25        outermost loop (the latter requires the intoduction of index arrays)
26    o pkg/obcs: replace obcs_apply_area/heff/hsalt/hsnow with obcs_apply_seaice
27    o pkg/seaice: moved DIFFERENT_MULTIPLE from seaice_model to seaice_dynsolver
28      http://forge.csail.mit.edu/pipermail/mitgcm-devel/2008-January/003173.html
29    o verification/seaice_obcs: updated for restart test and latest options
30    o pkg/seaice: add a new flag SEAICEuseTEM to use a slightly different
31      ice rheology (so-called truncated ellipse, that gets rid of tensile stress);
32      for now this is only available for the C-grid code and also within
33      #ifdef SEAICE_ALLOW_TEM, because this option may slow down the EVP code
34    
35    checkpoint59m
36    o pkg/seaice: use different time constant for melting (SEAICE_gamma_t)
37      and freezing (SEAICE_gamma_t_frz) ice due to mixed layer temperature
38    o gad_som : fix flux output (& diagnostics) to have same units as other  
39      advection scheme fluxes (was previously multiplied by deltaT).  
40    o added verification/seaice_obcs both to test seaice open boundaries
41      and to provide an example matlab scrpt for generating them
42    o added verification/lab_sea/input.salt_plume for testing pkg/salt_plume
43    o pkg/salt_plume: clean up salt_plume_frac.F to
44      remove redundancy in PlumeMethod 1 and 4
45    o pkg/kpp: added saltplume diagnostics
46    o pkg/obcs and pkg/seaice:
47      - do not set uice and vice to zero when OB*icefile are unspecified
48      - OBCS_SEAICE_AVOID_CONVERGENCE is undefined by default
49      - moved seaice tracer obcs after call to seaice_growth
50    o pkg/salt_plume: added various options for salt plume depth
51      criterion and for vertical distribution of the salt
52    
53    checkpoint59l
54    o pkg/ptracers: new version of ptracers pickup:
55      read meta file and write only fields which are needed to restart.
56      ( same logic as main pickup file ; also using pickupStrictlyMatch )
57    o pkg/seaice:
58      - add timescale for melting due to warm mixed layer as a means of
59        setting SEAICE_availHeatFrac more conveniently
60      - add a CPP-flag/runtime parameter check for flooding algorithm
61      - reformulated availHeat in seaice_growth.F to be independent of AREA
62    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
63      unit changes
64    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
65    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
66      SX vector computer.
67    o pkg/seaice:
68      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
69        seaice forcing fields can now be read only through pkg/exf
70      - removed some unused halos
71    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
72    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
73      or U/VICE from U/VWIND before computing U/VSTRESS
74    
75    checkpoint59k
76    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
77      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
78    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
79      all experiments pass when compile with un-initialised var. checking option.
80    o added pkg/salt_plume
81    o script to test restart (for now, in MITgcm_contrib/jmc_script)
82    o pkg/seaice: new read/write pickup version.
83      read meta file and write only fields which are needed to restart.
84      ( same logic as main pickup file ; also using pickupStrictlyMatch )
85    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
86    o lab_sea.hb87: modify the domain & update output.hb87.txt :
87      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
88      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
89      process. Fixed here by closing the domain at the Northern boundary.
90    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
91    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
92      a set of consecutive levels in/from a 3-D array.
93    o pkg/ptracers:
94      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
95      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
96    
97    checkpoint59j
98    o in pkgs: dic, obcs, offline, rbcs:
99      standard way to compute coeff. for time interpolation between 2 time reccords
100      which retains full precision (& make results less dependent on compiler).
101      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
102    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
103      packages instead of reading ice cover and wind speed separately
104    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
105     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
106      to allow to compile customized code before the update)
107    o cleaning-up:
108      - fix CPP instruction syntax in pkg/obcs
109      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
110        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
111      - fix some threads issue in IO parts.
112    o pkg/dic:
113      - add tons of "_d 0" (--> much better testreports !)
114       and then update outputs of tutorial_global_oce_biogeo
115    o pkg/mom_fluxform:
116      add a special version of momentum advection intended to conserve momentum
117      next to a bathymetry step or a coastline edge. (default = off = #undef)
118    o new read/write pickup version:
119      - for now, only implemented for main (mdsio) pickup file.
120      - write out only what is needed to restart; merge pickup_nh , pickup_ph
121        and main pickup together.
122      - read meta file; read only what is needed to restart; stop if a field
123        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
124        if it make sense (even if the restart is not perfect).
125      - if no meta file, assume that pickup to read corresponds exactly to
126        a pickup that would currently be written.
127      - read pickup written in the old format (until checkpoint59i) if it
128        recognizes an old meta file (no field-list).
129      - add a meta file in exp. which starts from a pickup: 2 cases:
130        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
131         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
132        b) a meta file describing the content of the associated pickup file
133         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
134    o pkg/mdsio & pkg/rw:
135      - new routine to read a meta file ; new set of routine to read
136        Multiple-fields file (with meta file).
137    o added open boundary conditions capability for seaice
138        HSNOW, HSALT, UICE, and VICE
139    
140    checkpoint59i
141    o adjoint:
142      * fix multiDimAdvection adjoint
143        (partial recomputation problem by TAF for fVerT(:,:,kDown)
144        and comlev1 size definition (maxpass vs. max. number of tracers)
145      * verification/global_ocean.90x45x15 adjoint now tests
146        NLFS and multiDimAdvection using DST3 (=30)
147      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
148    o pkg/kpp: add "_d 0" to real constant (if missing);
149      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
150      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
151    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
152      for internal parameters related to restart process (formerly from PARAMS.h)
153      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
154    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
155      as argument. (only atm2d & obcs write_pickup have not yet been updated)
156    o pkg/monitor:
157      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
158      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
159      - account for deep Atmosphere factor and density factor (anelastic)
160    o added open boundary conditions capability for seaice HEFF and AREA
161    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
162      thermodynamics
163      - requires a little reorganization, which affects the testreport results
164        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
165        so that now the conservative form is tested
166      - add a few comments
167    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
168    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
169    o add new diagnostics to seaice: advective, diffusive fluxes (only for
170      multidim-advection, for scheme 2 they are not filled) and transports,
171      thermodynamic growth rates
172    o change units of EmPmR (inside the code, + within coupling interface)
173      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
174      Affects results @ truncation level (cg2d match) and update output of
175       experiments: lab_sea(6), global_ocean.90x40x15(10),
176      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
177      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
178      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
179      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
180    
181    checkpoint59h
182    o pkg/exf:
183      - improve vectorization by moving if-statement out of loops in
184        exf_mapfields, exf_radiation
185      - exf_bulkformulae.F: introduce 2D fields and vectorize code
186    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
187    o testreport:
188      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
189        monitor & update offline_exf_seaice exp. output.
190      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
191    o pkg/seaice:
192      - bug fix in the evp solver: boundary conditions were affected be
193        masking of zMax/zMin (changes results)
194      - minor bug fix in boundary conditions in seaice_calc_strainrates
195        (changes results for no_slip)
196      - seaice_lsr.F: make interpolation of eta dependent on boundaries
197      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
198      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
199        stress formulation and no-slip boundary conditions
200    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
201      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
202    o pkg/seaice: a first HSALT time stepping equation has been checked in
203    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
204      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
205      without requiring DO-IF statements
206    o pkg/thsice:
207      use continuous power-law function for partition of energy between lateral
208      melting/freezing and thinning/thickening ; old code using step function
209      still available with #undef THSICE_FRACEN_POWERLAW
210      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
211    o testreport: change AD testing : check against results/output_adm.txt
212      using same scripts as for forward test.
213    
214    checkpoint59g
215    o adjoint testing: in preparation for changing testreport:
216      - output format: cost and grad written on separated lines
217      - ad output results in directory "results" (instead of "results_ad")
218    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
219    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
220    o pkg/ecco: allow user defined cost function contributions
221    o testreport:
222      Allow to choose (per experiment) the list of tested output variables
223       and the main variable (used to issue a pass/FAIL ) ;
224      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
225      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
226      Also modify printing of summary:
227       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
228       b) echo the list of tested variables in the individual summary.txt of
229          each experiment.
230    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
231      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
232      (but still depend on the tile decompostion of the domain).
233    o pkg/seaice: change a discretization detail to make the B-grid code
234      "more symmetric". This change is likely to remove all "ridges/leads" that
235      where quasi-aligned with the grid in B-grid solutions. It may also be
236      the solution to the stress coupling issues with the B-grid.
237    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
238      remove .cvsignore from input dir. (since testreport no longer run here).
239    o pkg/thsice:
240     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
241     - fix reshaping of sea-ice just after advection:
242       melt all the ice only if ice-volume is too small.
243     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
244       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
245     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
246    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
247      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
248    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
249      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
250      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
251      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
252      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
253      -> update output.txt
254    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
255     this affects truncation error: -> update output.txt of exp:
256      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
257      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
258    
259    checkpoint59f
260    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
261    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
262      a bounded range (in forward mode)
263    o pkg/ecco, ctrl, autodiff and mom_common:
264     internal parameter controls, completements of implementations
265    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
266    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
267      (not seem any difference in testing results).
268    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
269       at face corners.
270    o pkg/generic_advdiff:
271     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
272      loop range indices for computing vertical advection tendency
273      and do the calculation in the interior only (no overlap) ;
274      for now, only implemented for SOM advection (to save CPU time).
275     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
276    o exch2 adjoint
277      First set of changes:
278      - add exch2 hand-written adjoint templates
279      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
280        This will require cleanup in pkg/autodiff/*.F
281        (changed routines currently kept separate in verif. code/)
282      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
283        that used to hide exch2 or cubed-sphere specific code
284        (commented via 'cph-exch2')
285    o pkg/seaice
286      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
287    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
288       output of global_ocean.cs32x15.thsice .
289    
290    checkpoint59e
291    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
292      for B-grid vector (not yet tested) and C-grid vector (<- only used
293      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
294    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
295      (#ifdef ALLOW_SALT_PLUME)
296    o gather_2d/scatter_2d: removed halo regions
297    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
298      scheme and the corresponding test case (under front_relax dir). For now,
299      only available with Skew-flux form and not yet tested in realistic set-up.
300      adjoint: store directives updated, but gradient checks deteriorated,
301      so maybe GM/Redi adjoint is now broken.
302    o seaice adjoint
303      * add AREA, HEFF, HSNOW as control variable
304        (should not change lab_sea results)
305      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
306    o pkg/seaice:
307      * added computation of saltFlux in seaice_growth;
308        For time being, sea ice salinity is assumed constant
309        contribution of snow flooding to freshening of sea ice is neglected.
310        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
311        defaults to 0.0 in order to maintain backward compatibility.
312        Typical values for SEAICE_salinity are 4 to 10 g/kg.
313      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
314      * added SEAICE_availHeatFrac, which specifies fraction of surface level
315        heat content used to melt or grow ice
316      * commented out cap of HICE: it helps keep ice thinner
317      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
318      * applied OBCS T/S mask to HEFFM sea ice mask
319    
320    checkpoint59d
321    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
322     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
323     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
324    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
325     and change default value of parameter "GM_Small_Number";
326     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
327       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
328       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
329    o pkg/ecco: cost function when applying pkg/smooth to controls
330    o pkg/ctrl: add forcingPrecond run time parameter
331    o pkg/seaice:
332     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
333     - fix bug in metric terms of u-equation in LSR solver (implicit part),
334       changes verification/lab_sea
335     - rearrange implicit part of u-equation in LSR solver to make it easier to
336       read, understand, and debug. This causes changes at the truncation level.
337     - fix (serious) bug in the boundary conditions (sign error in the implicit
338       part) of the LSR solver. Changes all LSR results.
339     - fixed problem with HSNOW initialization to avoid thick snow when AREA
340       is initilized with small values - does not change lab_sea results.
341     - added HsnowFile initialization capability
342    o pkg/smooth: addition to model/src and pkg/ctrl so allow
343     initialization of pkg/smooth and application to control vector
344    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
345    o dependencies: pkg/profiles requires pkg/cal
346    o pkg/profiles:
347     - added option ALLOW_PROFILES_GENERICGRID
348         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
349         that interpolation information (grid points and coefficients) is provided
350         within the netcdf input files.
351         -> sample matlab scripts can be found in MITgcm_contrib/gael
352         that allow you to prepare netcdf input files.
353     - also modified: cleaner include statements, cleaner error print statements,
354       cleaner stops when error, and more tests of the netcdf input files consistency.
355    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
356    o pkg/seaice:
357     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
358       requires a new routine: seaice_diagnostics_fill.F
359     - make sure that seaice does not move if not forced (pressure replacement
360       method, Hibler and Ip, 1995), changes results
361     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
362     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
363       It is turned off by default (=-1.), because it changes the results.
364     - make it possible to read AREA from a file, too.
365    
366    checkpoint59c
367    o add S/R and diagnostics for oceanic mixed-layer depth
368    o move GMRedi call after all vertical mixing schemes (including KPP)
369    o pkg/thsice:
370     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
371      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
372    o pkg/obcs:
373     - bug fix for balance code
374    o pkg/seaice:
375      - allow values of SEAICE_elasticParm > 1
376      - add new parameter SEAICE_evpTauRelax as an alternative
377        to SEAICE_elasticParm
378      - make lsr boundary conditions free slip (by default), changes result
379      - add code for no slip boundary conditions for lsr
380      - set minimum of zeta to zero (and not 4e8) (changes results)
381      - add a cap on AREA after advecting AREA if seaice_growth is not called
382    o change calculation of Visbeck K:
383      - no longer depend on tapering scheme; instead, compute slope (limited
384        by GM_maxSlope). this is equivalent to what was comuted before with
385        clipping or linear tappering.
386      - fix vertical averaging (wrong by 1/2 level)
387      - leave the old version (but will not be maintained) within
388        #ifdef OLD_VISBECK_CALC / #endif
389      - update output of exp. ideal_2D_oce
390    o change error catch in calc_r_star to improve vectorization
391    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
392      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
393    o adjoint:
394      Re-organized adjoint checkpointing according to Matt Mazloff
395      (but with modifs/completions/cleanups)
396      Storing is now bundled into large arrays to optimized I/O
397      (and second step in cleanup of the_main_loop)
398    
399    checkpoint59b
400    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
401      - export/import (between ocean & coupler) fields needed for ocean DIC.
402    o pkg/seaice:
403      - get rid of three more exchanges seaice_calc_viscosities (required
404        different loop boundaries in seaice_lsr and seaice_ocean_stress)
405      - bug fix in seaice_ocean_stress (update of lab_sea required)
406      - reduce loop boundaries to necessary minimum also in seaice_evp
407      - go back to the old way of computing deltaC/Z as the adjoint likes that
408        better
409    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
410      passive tracer to an Age Tracer) + update output.txt
411    o pkg/exf:
412      - implement A-grid / C-grid selection for wind-stress input files.
413      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
414      for now, in exf_bulk_largeyeager04.F only :
415      - change implementation for case where windspeed + 2. components wind-stress
416        are read-in. AND use rhoConstFresh to convert evap.
417    o pkg/seaice:
418      - use correct EXCH_UV for wind-forcing (on A-grid).
419      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
420        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
421    o pkg/exf:
422      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
423      EXF_INTERPOLATION:
424      - merge global_with_exf/code version of exf_interp_read.F
425        to the main code ;
426      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
427        reading the file ; Important: This options needs to be defined to recover
428        previous code.
429        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
430      - no longer loose real*8 precision along the way when using exf_iprec=64.
431    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
432      - change discretisation of evp-solver in order to avoid another exchange
433        (changes lab_sea) and clean up a little
434      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
435        help the adjoint (this also changes the results slightly)
436      - add a few "_d 0" where they had been missing in seaice_evp.F
437      - cleaning up: remove unused seaice_calc_rhs.F
438    o pkg/exf: some cleaning-up:
439      - change various "constants" into runtime parameters
440      - cleaned-up Large&Yeager04 routine which should eventually
441        replace exf_bulkformulae.F (changed names of S/R and CPP)
442        and merged various ALLOW_ATM_WIND options
443     only used with thsice pkg (in thsice_get_exf.F):
444      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
445        which are used when useStabilityFct_overIce=TRUE (= the default)
446      - change default values of ice & snow emissivity and scale downward LW
447        by ice & snow emissivity.
448    o pkg/thsice:
449     fix few little problems, in thsice_calc_thickn.F:
450      - growth vertically (and not laterally) if iceFrac == iceMaskMax
451      - melt only laterally if hIce < hThinIce (as the comments say)
452      and in thsice_extend.F:
453      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
454      - start to form ice as soon as the minimum ice-volume is reachable.
455     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
456      and cpl_aim+ocn
457    o pkg/kpp
458     - move computation of surface related input fields to KPP into a new
459       subroutine kpp_forcing_surf.F
460     - remove wrong (within bi,bj loops) EXCH calls.
461     - little cleaning (add argument myThid in last position, cvs header ...)
462     - for now, fix conservation problem by exchanging KPPviscAz (may not
463       be the best fix)
464    o pkg/seaice
465     - check for inconsistent evp parameter/cpp-flag combination
466     - remove leftover errIO flat for obsolete name list error handling
467    o OpenAD
468     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
469    
470    checkpoint59a
471    o pkg/seaice: some parameter clarifications and a little bit of clean up
472    o pkg/thsice: rename run-time parameters:
473       himin       -> hIceMin
474       himin0      -> hThinIce
475       hihig       -> hThickIce
476       i0          -> i0swFrac
477       transCoef   -> bMeltCoef
478       frac_energy -> fracMelting
479      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
480       with default values (for now) that do not change the results.
481      remove old version of thsice vars advection in pkg/seaice.
482    o in FFIELDS.h:
483      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
484      - make pLoad & sIceLoad always available (but still only used if
485         ATMOSPHERIC_LOADING is #define).
486    o pkg/kpp: replaced _KPP_RL with _RL
487    o bug fixes for vertical diffusivity computations when both KPP and
488        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
489        are no longer updating the vertical diffusivity array
490        (passed as argument) but are (re-) setting those arrays.
491    o pkg/seaice: fix bug in evp solver, while doing that
492      - change (improve?) discretization of stress computations for both
493        cgrid-lsr and evp solver
494      - add a new routine to compute strain rates
495      - the above changes lab_sea results
496      - add no slip conditions for evp solver (off by default), lsr-version
497        may follow
498      - fix exchange for shear at Z-points (does not change lab_sea)
499      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
500        (to force the user to pick a time step since there is not "safe" way
501        of choosing it)
502      - add principal stress diagnostics
503      - rearrange fields for evp a little to avoid having to call a: too many
504        exchanges and b: exchanges for stress trensor components which we do
505        not have.
506      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
507        of evp, complete rewrite for lsr case (latter is does not yet work
508        in all cases)
509    o pkg/kpp: add code to have mixing in shelf ice caverns
510      - add myThid to all kpp routines (long overdue)
511    
512    checkpoint59
513    o pkg/exf:
514      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
515        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
516      - move exf header files from lower_case.h to UPPER_CASE.h ;
517        add missing cvs Header & Name
518      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
519      - add namelist param. selectStressGridPosition, exf_monFreq
520      - retire many _CLIM routines, and remove data.exf_clim
521        + params moved to data.exf
522        + climsst, climsss now handled by exf_set_gen, i.e.
523          climss?period=0 refers to constant field,
524          climss?period=-12 to monthly forcing
525      - split up namelists in data.exf
526    o pkg/seaice:
527      - remove seaice_exch and seaice_exch_uv
528      - remove superfluous exchange of theta
529      - add myThid to seaice_budget_ocean/ice
530      - add new interface for atmospheric wind forcing (C-grid only)
531        + new routine
532        + two new field (taux, tauy for stress over ice)
533        + removed one global field (DAIRN) for C-grid case only
534    o pkg/thsise
535      - 2nd set of modifs for thsice adjoint in conjunction with exf
536    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
537    
538    checkpoint58y_post
539    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
540      vertical diffusivity, similar to that in MOM4; turned on using
541      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
542      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
543    o Added capability for 3D specification of background vertical diffusion
544      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
545      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
546      "data" file that contains the 3D vertical diffusivity coefficients.
547    o ice dynamics (pkg/seaice) with thsice thermodynamics:
548      - add code within pkg thsice to advect & diffuse sea-ice fields
549      similar to (and will replace) what has been added in  seaice_advdiff.F,
550      but: - conserving Mass, Heat & Salt.
551           - better when using non-linear advection scheme (not yet fully tested)
552           - can also be used in atmospheric set-up (for now, only the diffusion).
553    
554    checkpoint58x_post
555    o IO option for global-file compact format:
556      - add options when generating topology (utils/exch2/matlab-topology-generator)
557      - add I/O capability (pkg/mdsio).
558      - adapt utils/matlab/rdmds.m to read this format.
559      for now long-line format not yet supported by pkg/mdsio (& exch2).
560    o shelfice: add a few diagnostics
561    
562    checkpoint58w_post
563    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
564      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
565      (and replace horiVertRatio in NH code).
566      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
567                         and tutorial_plume_on_slope (sensitive to truncation)
568    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
569      directly to drive seaice model (C-grid only)
570    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
571     - reintroduce computation of wind from stress,
572     - compute tau (in exf_bulkformulae.F) from windstress averaged to
573       mass points to avoid tau = 0
574     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
575    o rdmnc.m: make it work with "global" files created with gluemnc
576    o rdmnc.m : some improvements in dealing with singleton dimension
577      (tested on all testreport mnc output files).
578    o genmake2: disable pkg/profiles if netcdf test fails.
579    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
580    o move call to cal_readparms up to make calendar parameters/variable available
581      to all packages
582    
583    checkpoint58v_post
584    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
585      useDynP_inEos_Zc tested.
586    o pkg/exf: changes to properly interpolate/mask/scale initial fields
587    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
588      and portions thereof.  See read_cs.txt for description and examples.
589    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
590      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
591      following the great-circle arc between those 2 points.
592    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
593      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
594    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
595     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
596     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
597     - still needs work (not working with some options ; efficiency to improve)
598       and serious testing.
599     - use this scheme for temperature & salinity in 2 advection test exp.:
600       advect_xy & advect_xz, respectively.
601    
602    checkpoint58u_post
603    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
604    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
605    o testreport: add option "-skipdir" to skip some test.
606    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
607      momentum calculation.
608    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
609    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
610      remove checkpoint.F and the_correction_step.F (no longer used);
611      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
612    o add option (linFSConserveTr) to correct for tracer source/sink due to
613      Linear Free surface
614    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
615    o pkg/thsice: fix reading mnc-pickups
616    
617    checkpoint58t_post
618    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
619    o pkg/mdsio:
620     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
621       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
622       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
623     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
624     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
625       either MDS_READ_FIELD or MDS_WRITE_FIELD )
626     - new S/R (to replace MDSWRITEMETA), which allows to write more
627       informations (variable names, time ...) to meta files.
628     - modify rdmds.m to give back the meta file content.
629    o pkg/diagnostics: change vertical interpolation to be safer, and more
630       flexible (define p-levels to interpolate to in data.diagnostics);
631      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
632       diagnostic pointer.
633    o pkg/seaice: more cleaning up of seaice_growth, added many comments
634    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
635    o fix multi-category seaice:
636     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
637       SEAICE_MULTICATEGORY
638     - fix short wave heat flux
639    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
640       and allow to use EVP solver. Change forward lab_sea: test both EVP
641       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
642    o Initial check-in of lab_sea adjoint
643      (very similar to natl_box_adjoint/code_seaice)
644      * used C-grid and EVP solver
645      * used KPP, GM/Redi
646      * uses inAdExact=.TRUE.
647      * gradient checks fail for both ADM and TLM
648        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
649        f.d. gradients actually seem more problematic than ADM, TLM gradients;
650        issue is related to forward mismatch between g77 an ifort
651    o pkg/seaice: overhaul of thermodynamics
652     - growth.F and groatb.F are replaced by new routine seaice_growth.F
653     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
654     - move a few global fields out of SEAICE.h into seaice_growth.F and
655       make them 2D (FICE/QNETO/ ...)
656     - remove FO (it is the same as QNETO)
657     - introduce a few local fields to avoid modifying external fields such
658       as atemp, etc.
659    
660    checkpoint58s_post
661    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
662      changed exf_set_gen.F so that
663        genperiod=0 means input file is one time-constant field and
664        genperiod=-12 means input file contains 12 monthly means
665    o CG2D: use pre-computed solver main-diagonal (stored in common block);
666      this affects truncation error ; generate new output file for exp. which
667      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
668        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
669        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
670        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
671        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
672        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
673    o start implementation of deep-atmosphere and anelastic formulation
674    o verification: remove 2nd copy of input files and use script "prepare_run"
675      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
676    o mom_common/vecinv/fluxform: fix a few initialisation isssues
677    o profiles: fix for multithreaded case
678    
679    o diagnostics: rename few diags:
680      s/'PRESSURE'/'RCENTER '/g
681      s/'TICE    '/'oceFreez'/g
682      s/'TAUX    '/'oceTAUX '/g
683      s/'TAUY    '/'oceTAUY '/g
684      s/'SWFLUX  '/'oceQsw  '/g
685      s/DIFx/DFxE/g
686      s/DIFy/DFyE/g
687      and add few ocean-forcing diagnostics:
688      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
689    o modifications to pkg/seaice/growth.F and budget.F, which change results of
690      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
691      as actual snow thickness.  It now refers everywhere to effective snow
692      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
693    
694    checkpoint58r_post
695    o modifications to pkg/seaice/growth.F, which change results of
696      lab_sea experiment: fixes pertain to melting snow over open water, to
697      masking EVAP under sea ice, and to using the correct AREA variable for
698      computations of EVAP, PRECIP, HSNOW, and GHEFF
699    o add ability to read bathy, salt, and theta using MNC (off by def)
700    o add flooding algorithm and advection of HSNOW for pkg/seaice;
701      both are turned off by default and do no change any results
702    o seaice advection with pkg/thsice: a step toward the use of non-linear
703      advection scheme, but #ifdef or commented out for now (requires more EXCH).
704    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
705      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
706      in natl_box (affects results @ truncation level: update output.txt)
707    o multi-threading and IO:
708      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
709      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
710        (needed to work with SingleCpuIO): tested in all verif. exp.
711    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
712      affects the results (but none of the verification test uses this scheme).
713    o Adding some pkg/diagnostics capability to pkg/seaice
714      (will certainly be subject to changes)
715    o ctrl: adding new control variables:
716      lwflux, lwdown, evap, snowprecip, apressure, runoff
717    
718    checkpoint58q_post
719    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
720      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
721      high_res_cube configuration by 4% on Columbia.
722    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
723      add (in global_with_exf/code) a version of EXF_INTERP_READ without
724      dynamical allocation (seems to work in multi-threaded).
725    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
726      single CPU io) so that TAF does not have to see EESUPPORT.h
727    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
728    
729    checkpoint58p_post
730    o obcs: stop if obcs is used with useCDscheme = .true.
731    o shelfice:
732     - fix a sign error so that no slip at shelfice interface works
733     - remove stop for combination non-hydrostatic code and shelfice. That does
734       not mean, that the results are correct, but at least they are numerically
735       stable
736    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
737    o added adjoint exch routined for all exch*3d* routines
738      and updated flow directives
739    
740    checkpoint58o_post
741    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
742      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
743    o change controling S/R for writing pickup file (new S/R do_write_pickup)
744      and clean-up reading/writing of pickup files.
745    o fix local version of read/write pickup (NH part) in rotating_tank/code
746    o simplify EXCH interface:
747     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
748     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
749    o added the regrid package
750    o shelfice:
751     - add a simple boundary layer scheme to reduce noise
752     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
753    
754    checkpoint58n_post
755    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
756       local variable (not in common block).
757    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
758      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
759      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
760        to work with SingleCpuIO.
761    o add "_d 0" to real constant of pkg/cfc subroutines ;
762       update exp. cfc_exemple & tutorial_cfc_offline output files.
763    o multi-threading and IO:
764      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
765        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
766      - barrier before and after reading.
767      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
768      - avoid using MDS_WRITELOCAL for LAND pkg output.
769      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
770        common-block variables ; Allows multi-threading with master-thread IO.
771    o change default MAX_NO_THREADS from 32 to 4 ;
772      and stop cleanly when MAX_NO_THREADS is too small.
773    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
774    
775    checkpoint58m_post
776    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
777       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
778    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
779       keep global_ocean.90x40x15 (for AD testing) with former secondary test
780       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
781    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
782        add MITgcm_tutorials (= code + all the tutorials)
783    o ecco, option to compute cost for total ssh (mean+anom)
784    o consistent with addition of ptracer and ssh in pkg/profiles
785    o profiles: adding ptracer and ssh
786    o testreport: change multi-test output-file name
787      (from output.txt.{name} to output.{name}.txt)
788    o profiles: now ok for mutli-tiles case
789    o seaice: add 4 parameters for different advection schemes for area,
790      (effective) seaice thickness, enthalphy, and snow height. Their default
791      is the standard parameter SEAICEadvScheme
792    o calc_gw:
793     - add cosFacU in zonal viscous flux (harmonic.visc.).
794     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
795       of tutorial_plume_on_slope.
796    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
797    o calc_gw: true flux-form, account for horizontal grid spacing.
798      update rotating_tank results, but not plume_on_slope (affected at
799      truncation level, 11 digits).
800    
801    checkpoint58l_post
802    o calc_gw:
803     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
804     - remove side-drag for now (need to fix it); update plume_on_slope results.
805     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
806    o commit code to make SST/SSS weights spatially variable
807      (based on either variable in-situ or variable initial T/S weights)
808    o pkg/ecco:
809      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
810        now based on horizontally varying weights wthetaLev, wsaltLev
811      * cost_averagesflags now returns year indices in addition to day, month
812      * sflux balance is performed on annual basis
813        (sflxumm, sfluxmm2, bal_sfluxmm)
814      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
815        including separate counting and multipliers
816    o pkg/rbcs
817      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
818    
819    checkpoint58k_post
820    o testreport:
821     - always build in dir. "build" (if not there, mkdir build instead of building
822       & running in input)
823     - run in dir run (if it exists), in build otherwise.
824     - call prepare_run (if input/prepare_run exists)
825     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
826    o pkg/exf modifications to interpolation and rotation routines for more
827       reasonable treatment of North Pole singularity: for tracers North Pole
828       value is set to northernmost zonal-mean value, for zonal velocity it is
829       set to zero, and for meridional velocity it is set to northernmost value.
830    o pkg/exf/exf_check_range.F
831     - add tile index to diagnostics and move stop statement to the very
832       end of the routine.
833    o pkg/diagnostics: (diagnostics_main_init.F)
834      define title of isomorphic variables according to the current config.
835    o pkg/thsice with pkg/seaice dynamics:
836    - fix domain of computation (interior only, required for exf) and do exchanges
837    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
838    o towards a standard way of dealing with multi-threading in MONITOR
839      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
840    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
841       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
842    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
843    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
844    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
845       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
846    o tracer advection:
847     - clean-up and simplify calc_common_factors.F
848     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
849       advection subroutine (but still not used within DST advection S/R)
850    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
851    
852    checkpoint58j_post
853    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
854      from file (collects calls previously in FORWARD_STEP)
855    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
856    o adjoint store dir. adjusted accordingly
857    o genmake2
858      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
859    
860    checkpoint58i_post
861    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
862      on wind stress (SEAICEstressFactor defaults to 1.)
863    o Total number of Timers is finite (<=40): comment out 2 non-essential one
864      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
865    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
866      on CS-grid: no longer loosing mass.
867    o exf & curvilinear-grid: no longer modify longitude xC & xG.
868    o pkg/ggl90: fix sloppy output and fix a bug
869    o pkg/seaice: added SEAICEuseEVPpickup parameter
870      - Set to false in order to start EVP solver with
871        non-EVP pickup files when using SEAICEuseEVP
872      - fix sign error in diffusion in seaice_calc_rhs
873    
874    checkpoint58h_post
875    * Modifications for bottom topography control
876      o replace hFacC by _hFacC at various places
877      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
878      o add non-self-adjoint cg2d_nsa
879      o update autodiff support routines
880      o re-initialise hfac after ctrl_depth_ini
881      o works for 5x5 box, doesnt work for global_ocean.90x40x15
882    * Adding verification for 5x5 box (4-layer) bottom topography control
883    
884    checkpoint58g_post
885    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
886       used for mean seasonal cycle, mean diurnal cycle); add an example
887       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
888    o pkg/ggl90:
889      - add parameter (minimum surface kinetic energy)
890      - fix bug (avoiding division by zero)
891    o couple pkg/thsice to pkg/seaice:
892      - modify advection in seaice to accomodate new scalar fields to be advected
893      - only muliDimAdection scheme work with seaice/thsice
894      - mapping of thsice-variables to seaice-variables, back and forth
895      - does not break the verification experiments, but does not give the
896        desired results either
897    o pkg/seaice
898      - make (default) second order advection a bit less confusing?
899    
900    checkpoint58f_post
901    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
902      to pkg/seaice):
903      - new routines thsice_map_exf and thsice_get_exf provide the interface
904      - add an additional formal parameter to thsice_solve4temp
905    o pkg/exf:
906      - add new fields wspeed, snowprecip (to be able to couple to thsice)
907      - correct Stefan-Boltzmann constant
908      - new parameter for longwave surface emittance
909      - separate some stuff from exf_bulkformulae into new routines  
910        exf_radiation, exf_wind
911      - add new parameters and constants: longwave emissivity for ocean, ice
912        and snow, evaporation parameters over ice
913      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
914        either wind from stress or stress from wind
915    o pkg/thSIce:
916    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
917    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
918       and THSICE_CALC_THICKN
919    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
920    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
921      to make debugging easier.
922    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
923    o pkg/bulk_force:
924      - clean-up comments and parameters ;
925      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
926    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
927      generate new output for test-experiment: aim.5l_cs.thSI
928    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
929      testreport accordingly
930    
931    checkpoint58e_post
932    o SEAICE_CGRID adjoint done
933    o R_STAR adjoint implemented.
934      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
935      * need to sort out init. of h0facc, etc.
936    o Make pkg/profile fully independent of ecco,cost, etc. stuff
937      to be able to use it in pure forward.
938    
939    checkpoint58d_post
940    o upgrade simple test-experiment to tutorial example:
941     step.1: duplicate the experiment and (step.2) will remove the old copy.
942      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
943      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
944      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
945      tutorial_global_oce_biogeo    <- copy of dic_example
946      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
947      tutorial_plume_on_slope       <- copy of plume_on_slope
948      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
949      tutorial_global_oce_optim     <- empty for now (David ?)
950      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
951     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
952    o correct a sign problem in cost_scat.F
953    o obcs and ptracers: fix boundary conditions for advections schemes
954      with larger stencil
955    o thsice adjoint: start
956    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
957      completeness
958    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
959      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
960    o ptracers adjoint:
961      * avoid extensive recomputatations
962      * fix missing re-init. of gptr (missed by TAF)
963    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
964      me to turn off the excessive output to STDOUT that this package produces
965    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
966      and add those terms in Vector-Invariant formulation.
967    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
968      if the control period (xx_hfluxperiod etc) is 0
969    o in profiles pkg, clean routines and fix details
970    o in ecco pkg, reading ssh data:
971      fix problem in case the model does not start at iter0=0
972    o fix mnc-pickup/restart for ptracers
973    o new package prifiles:
974      code to compute profile-based cost by Gael Forget
975      (modifs in ecco, ctrl, autodiff)
976    o Benign bug fix in initialization (spotted by M. Mazloff) of
977      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
978    
979    checkpoint58c_post
980    o adjoint: finish NLFS adjoint and provide reference output in
981      verification/global_ocean.90x40x15/results_ad_nlfs
982    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
983      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
984      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
985      with SEAICE_CGRID defined.
986    o move calendarDumps from "data" to "data.cal" and clean-up the code
987      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
988    o add useEXF & useCAL flags (for now, set in hard-coded way)
989    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
990      (were missing in NH mode, and wrong in quasihydrostatic mode).
991      waiting for Chris updated version of calc_gw to add those CALLs.
992    o fix bug in quasihydrostatic S/R ;
993      add a test for this option: global_ocean.90x40x15.qshyd
994    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
995      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
996    o add on/off flag useOffLine for package OFFLINE
997    o seaice:
998      - modify advection so that it works also on the C-grid
999      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
1000        problem in multi-tile runs with C-grid
1001      - add flags for clipping ice velocities and/or masking solver forcing
1002      - fix drag (ocean on ice) formulation and a bug that caused noise in the
1003        C-grid solver
1004      - added a few comments to seaice_diffusion.F
1005      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
1006        are now exclusive)
1007      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
1008        required re-ordering the code a little:
1009       + make DAIRN global variable (defined in SEAICE)
1010       + move computation of the viscosities eta and zeta into a new separate
1011         routine (because I need to recompute them in seaice_ocean_stress.F)
1012    
1013    checkpoint58b_post
1014    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
1015      update output.txt of exp. aim.5l_cs.thSI
1016    o various mnc cleanups and improvements:
1017      + shrink lookup tables by factor of ~4
1018      + better error reporting when running out of lookup space
1019      + able to handle longer path/file names (up to 500 chars)
1020    o adjoint:
1021      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
1022      - TBD: "hidden" mom_vecinv recomp. in dynamics
1023    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
1024     (allow to differentiate between forcing components using new integer flags:
1025      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
1026     and add new flag to put Dissipation tendency out of Adams-Bashforth.
1027    o ecco
1028      - enable trend removal from SSH anomaly obs.
1029    o adjoint
1030      - a fix for PmEpR when #undef EXACT_CONSERV
1031      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
1032      - try to fix "hidden" recomp. in forward_step for NLFS
1033        (NLFS seems broken sometimes after I checked it in)
1034    o seaice:
1035     - add c-grid version of the dynamic solver:
1036       + three new routines that are the c-grid substitute lsr, dynsolver
1037         and ostres
1038       + put a few fields that were local to dynsolver into global common
1039         blocks, so that I can move the computation of stresses etc into
1040         seaice_lsr (saves coding but may break the adjoint).
1041     - replace more hardwired parameters by runtime parameters
1042     - add ice masks that mask the rhs of the implicit solvers where there
1043       is no ice (commented out in seaice_dynsolver, because i am not sure
1044       if this works properly), eventually this should replace the clipping
1045       of ice velocities in seaice_dynsolver to +/-40cm/s.
1046    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
1047      include it only where its needed
1048    o move balancing of fluxes before the call of external_forcing_surf
1049    o seaice:
1050      - correct units of turning angles (now they are really in degrees)
1051      - move computation of GWATX/Y out of main routine into dynsolver
1052      - initialize GWATX/Y in seaice_init
1053    o Apply mask on Fresh-Water flux (needed for SSH forcing).
1054      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
1055    o seaice: add runtime flags for turning angles (default to zero)
1056    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
1057      and trend from exf forcing and ctrl control adjustments
1058    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
1059      (since checkpoint57x_post)
1060    o change the default rotation period to 86164.s = the Earth rotation
1061    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
1062      and based on a reference stratification. Tested within hs94.cs-32x32x5.
1063    o seaice advection: add code for choosing between the default (2nd order
1064      central differences) and multiDim advection schemes provided by
1065      pkg/generic_advdiff
1066    o seaice:
1067      - removed all references to SEAICE_GRID.h fields from
1068        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
1069        (cubed-sphere configuration will change a little)
1070      - grid computations in seaice_init are obsolete now.
1071      - cleaned up code a little so that is easier to read (hopefully).
1072      - added new (better?) discretizations of default advection and diffusion
1073        (turn on with SEAICEuseFluxForm)
1074      - replace 1 in 3d global fields by kSurface in growth.F
1075      
1076    checkpoint58a_post
1077    o seaice:
1078      - bug fix in advect.F
1079    o shelfice:
1080      - separate shelfice load anomaly from pload (breaks with time
1081        dependent forcing), => introduce constant field shelficeLoadAnomaly.
1082        Its default is 0., but it may be computed more cleverly from (unknown)
1083        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
1084        done offline. A good approximation of the pressure load anomaly is
1085        necessary to avoid large initial adjustment processes underneath
1086        deep-reaching shelfice.
1087      - small fix in ISOMIP shelfice_thermodynamics
1088      - add more sophisticated thermodynamics of Hellmer (1989), this is
1089        now the default
1090      - give a few constants more intuitive names
1091    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
1092      if bulk formulae are used in long integration (especially EmPmR). Turn
1093      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
1094      if balancePrintMean, the imbalance that is substracted is printed to
1095      STDOUT.
1096    o fix bug (typo) in obcs_apply_eta.F
1097    o add a new package shelfice which enables us to model the circulation
1098      underneath shelf-ice with draughts of hundreds of meters.
1099     - works
1100     - to do: + include improved thermodynamics
1101              + check whether kSurfC (from model/inc/SURFACE.h) can be used
1102                instead of new field kTopC
1103              + can we use topoFile, Ro_surf and existing code in ini_depth.F
1104                instead of new field R_shelfIce and new code in ini_depth.F
1105                and ini_mask_etc.F?
1106              + adjust vertical mixing schemes?
1107    o seaice pkg:
1108     - add a cpp-flag to include a simple formula for a salinity dependent
1109       freezing point of sea water at the surface
1110     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
1111       meridional stresses are now different (and hopefully correct)
1112    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
1113       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
1114       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
1115    o pkg/diagnostics: add options and parameters for regional-statistics
1116       diagnostics ; define regions by reading a region-mask from a file
1117       (might add other options later)
1118    o pkg/bulk_force:
1119     - add option and parameters to use AIM surface-flux formulae.
1120     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
1121       others forcing fields (defined in PARM05, parameter file "data") are loaded
1122       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
1123     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
1124     - use the right EXCH call for uwind,vwind (to work on CS-grid).
1125     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
1126       and parameters (note: calcWindStress replaces .NOT.readwindstress).
1127     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
1128    
1129    checkpoint58
1130    o add "--embed-source" option to genmake2 which, when the supporting
1131      tools can be compiled (as determined by genmake2) will turn on the
1132      embed_files package which then embeds the entire MITgcm source code
1133      (*.[fFhc] + Makefile) used for the build within the executable
1134      - requested by CNH but off by default
1135      - adds a paltry <9MB to the mitgcmuv executable in most cases
1136      - only writes the output when useEMBEDSRC in eedata is true
1137    o clean up 3-dim. relaxation codes:
1138      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
1139      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
1140      * Thanks to Tom Haine for testing!
1141    
1142    checkpoint57z_post
1143    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
1144      affects output (@ truncation level) of exp. plume_on_slope ; updated.
1145    o fix the pickup behavior for obcs in combination with ptracers
1146    o fix a bug in ptracers_external_fields_load
1147    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
1148      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
1149    o transfered surface NH pressure to eta field (if exactConserv).
1150    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
1151         and update lab_sea output.txt file.
1152    o completing 3-dim. relaxation code: additional term
1153         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
1154      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
1155      * At compile time, in "EXF_OPTIONS.h" set
1156          #define  ALLOW_CLIMTEMP_RELAXATION
1157          #define  ALLOW_CLIMSALT_RELAXATION
1158      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
1159          tauThetaClimRelax3Dim = 15552000.0,
1160          tauSaltClimRelax3Dim  = 15552000.0,
1161      * 3 cases:
1162          1) Use a constant-in-time 3-dim. field
1163          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
1164          3) Real-time relax. to time-evolving prescribed field
1165    o Adding Laplacian-type smoothness constraint on
1166      initial and boundary (forcing) controls (ic, bc)
1167      * enable at compile-time via
1168        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
1169      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
1170      * Absolute scale somewhat unclear so far
1171      * no area weighting was included since no other cost term does so far
1172    
1173    checkpoint57y_post
1174    First step for a NLFS adjoint
1175    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
1176    o new init. routines for calc_r_star, calc_surf_dr
1177    o still need to deal with ini_masks_etc
1178    o testreport seemed happy
1179    checkpoint57y_pre
1180    
1181    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
1182    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
1183    o add new offset feature to offline pkg (plus minor cleanup)
1184    o cfc fixes for final year of integration
1185    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
1186      be in GCHEM_OPTIONS).
1187    
1188    checkpoint57x_post
1189    o fix testreport Pb in multiple test experiment.
1190    o cleanup our namelist syntax in verification:
1191      - make it more F95 standards compliant (some work still needed)
1192      - allows the vast majority of our tests to work with gfortran
1193    o Non-Hydrostatic:
1194     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
1195     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
1196    o Allow to apply AB on T,S rather than on AB(gT,gS):
1197     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
1198     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
1199       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
1200     - need a "clever" read_pickup to restart from the other AB formulation
1201    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
1202    o remove some unused variables (reduces number of compiler warnings)
1203    o adjoint
1204      * Disable useVariableViscosity for adjoint for time being
1205        (there are a number of extensive recomputations)
1206      * Initialize certain variables needed for adjoint
1207    
1208    checkpoint57w_post
1209    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
1210                 fix the singleCpuIO RS version of MDSWRITEFIELD
1211       and add a WARNING if using globalFiles=T with multi-processors.
1212    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
1213      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
1214    o tracer advection scheme:
1215      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
1216       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
1217       was not very convenient).
1218      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
1219       (further tests needed for the implicit DST & Flux-Limiter schemes).
1220    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
1221      and sRef for convenience, handy, when you want to initialize
1222      ptracers in a large domain with a constant non-zero value. Also,
1223      untangle ptracers_init.F a little.
1224    
1225    checkpoint57v_post
1226    o change dome exp. to use variable viscosity in side-drag terms.
1227    o remove all the files from the cfc_offline test since they are now
1228      incorporated into tutorial_cfc_offline which has been producing
1229      identical results for a few days of testing
1230    o add new parameter: sideDragFactor to enable half-slip-side BC
1231      and change side-drag S/R to use viscosity from mom_calc_visc
1232      (can switch back by setting sideDragFactor=0.); affects results at
1233      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
1234       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
1235    o vorticity & strain are now computed without masking, to account for
1236      no-slip-side BC in variable viscosity calculation ; mask is applied
1237      anyway later on, before computing advection/coriolis terms.
1238    o modify exp4 to test new obcs support for reading from external files
1239      and for passive tracers
1240    o fix behavior of ptracers_monitor when monitor output is written to a
1241      netcdf-file; still not independent of monitor.F (writes in the same
1242      file).
1243    o change default value of tRef (put a uniform, meaningful value for ocean
1244      & atmos) and initialize sRef (was missing, as Martin mentioned).
1245    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
1246      to be proportional to enstrophy dissipation length.  Thus,
1247       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
1248      This is now consistent with Smagorinsky and with the manual.
1249    
1250    checkpoint57u_post
1251    o OBCS and PTRACERS: add open boundary support for passive tracers
1252      - either use homogenous (pseudo) v.Neumann conditions or prescribe
1253        OB-values from file; this is not different from the way theta and salinity
1254        are treated
1255      - however, Orlanski-radiation conditions are not supported, and the model
1256        will stop if you use pTracers and Orlanski at the same time.
1257      - beefed up the rountine obcs_external_fields_load: now only those open
1258        boundary values are overwritten with values from files for which there
1259        are really files, otherwise the OB-fields remain untouched. This makes
1260        it possible to use different OBs at different ends of the domain (as
1261        with EXF)
1262    o reduce number of exch calls in shap_filt (s2).
1263    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
1264      truncation level) 4/5 MLAdjust test results (11&12 digits match).
1265    
1266    checkpoint57t_post
1267    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
1268    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
1269      same truncation, independent of the face number: affects affects several
1270      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
1271    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
1272      note that biharmonic viscosity + no-slip was not tested in any experiment.
1273    o fix bug in non-linear free-surf side-drag ; generate new output for
1274      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
1275    o make mnc honor the writeBinaryPrec flag for most kinds of output
1276    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
1277    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
1278      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
1279    o add brackets in multi-terms sum to get same truncation, independent of
1280      the face number (manage to get exactly same value of gU,gV at the cs-edge)
1281      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
1282    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
1283      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
1284      a maximum grid-scale Reynolds number.  Also, changes all length calculations
1285      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
1286      Suggested values of viscosity parameters found in mom_calc_visc.
1287      Many new viscosity diagnostics available.
1288    
1289    checkpoint57s_post
1290    o Add clearing-house for viscosity calculations, mom_calc_visc and
1291      correct numerous bugs in LeithD and Smagorinsky discretizations.  
1292      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
1293      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
1294      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
1295      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
1296      The Strain-Tension form is now called with useStrainTensonVisc=.true.
1297      ViscAhStrain and viscAhTension are now retired.
1298    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
1299    o In response to JMC's bug report, genmake2 now ignores any soft-links
1300      that it finds in the *current* directory when searching for files.
1301      Soft-links found in any other source directories will still work as
1302      they did before.
1303    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
1304      a C routine to unlimit the stack size
1305    o mnc-ify pkg/aim snapshot vars
1306    o mnc-ify pkg/land as requested by Daniel
1307    o various changes to mnc including:
1308      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
1309      - output can now be grouped so that all files within a group
1310          change the ITER portion of their names in lock-step together
1311      - can now read ("global") PER-FACE (in addition to PER-TILE) files
1312          and works with both EXCH1 and EXCH2 (but needs more testing)
1313      - writing works for all verification test cases w/ g77 on Linux
1314    
1315    checkpoint57r_post
1316    o make MNC variable initialization happen earlier
1317    o add diagnostics for (almost) each term of the momentum Eq.
1318    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
1319    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
1320    o remove MINIMAL_TAVE_OUTPUT option ;
1321      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
1322    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
1323      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
1324    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
1325    o add time-dependent SST, SSS control
1326    o cost terms in ecco/ modularized (new cost_generic.F)
1327    o cost_averages routines are modularized (new cost_averagesgeneric.F)
1328    o new infrastructure for seaice model vs. obs misfits in seaice/
1329      * driver from the_main_loop.F is seaice_cost_driver.F
1330      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
1331      * gradient check in Exp. 6a of natl_box_adjoint/
1332    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
1333      (see README file)
1334    
1335    checkpoint57q_post
1336    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
1337    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
1338      - bug was reported by Jean-Michel and Ian Fenty
1339    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
1340      update exp. cpl_aim+ocn output.
1341    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
1342      Needed for high-res. runs with large global files
1343      to be able to limit tapelev size
1344    o Changed some tests for adjoint:
1345      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
1346      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
1347      * global_ocean.90x40x15/ back to default 3-level checkpointing
1348    o Modifications to enable scripted COMMON to MODULE conversion
1349      * verification/OpenAD/code/ has necessary scripts and description;
1350      * converts, compiles and runs successfully;
1351    
1352    checkpoint57p_post
1353    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
1354    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
1355      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
1356    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
1357    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
1358      (was already the case for dissipation with mom_vecinv,
1359       and also the case for grad.PhiHyd when staggered-timeStep)
1360      This will allow to put dissipation out-off the AB time-stepping.
1361     Unfortunately, affects truncation error. Update output of exp. that "fails"
1362      (cg2d matching number) and leave the others for later: front_relax(10),
1363      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
1364      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
1365    
1366    checkpoint57o_post
1367    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
1368      (2) its ready to be documented during the 20050801 DocFest
1369    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
1370      for ideal_2D_oce and lab_sea on linux_ia32_g77
1371    o set to #undef CTRL_SET_OLD_MAXCVARS_30
1372      in global1x1_tot/code_seaice_adj to access indices 32, 33
1373      (worth another tag)
1374    
1375    checkpoint57n_post
1376    o adding precip control xx_precip 32
1377    o adding swflux control xx_swflux 33
1378    o Replacing 10 forcing penalty cost routines by 1 generic.
1379    o Implementing partitioning in time-mean and variable adjustment
1380      for atmos. state.
1381    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
1382    o in natl_box_adjoint:
1383      * updated exp 1 to 10
1384        (but does not have time-mean vs. variable split results yet)
1385    o updated global1x1/*_seaice_adj/
1386      to incorporate latest changes
1387    o enable useSingleCpuIO for mdsio vector routines
1388      (applies in particular to tapelev I/O)
1389    o removed inefficient K-loop in all active_file*control*.F
1390    
1391    checkpoint57m_post
1392    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
1393      and advect_cs (use EXCH-2 and standard cs-32 grid files).
1394    o pkg/exch2: filling of face-corner halo regions is optional
1395      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
1396    
1397    checkpoint57l_post
1398     tag before updating tutorials (pre-release-2)
1399    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
1400       for output and interpolation of input fields onto model grid)
1401    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
1402       Affects results of exp. rotating_tank ; update output.txt.
1403    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
1404          and taking the square quantity and/or using a fraction-weight field.
1405    o fix aim_diagnostics_init.F mate numbers.
1406    o add mnc output capability to diagnostics/diagstat and update
1407      our cvsignore files for the ACSII output generated
1408    
1409    checkpoint57k_post
1410    o lab_sea now uses diagnostics package and provides a suite of
1411      new EXF diagnostics output.
1412    
1413    checkpoint57j_post
1414    o exf
1415      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
1416        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
1417        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
1418      * extended diagnostics output
1419        - now includes all EXF variables
1420        - hs, hl moved to common block
1421        - separate S/R for diagnostics, called after ctrl vector is added
1422        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
1423        - EXFqnet contains true Qnet (i.e. includes qsw)
1424      * updated verif. lab_sea, global_with_exf
1425      * Rearranging hflux (exf_mapfields -> exf_getforcing)
1426        to ensure that diagnostics sees a true EXFqnet
1427    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
1428    o diagnostics pkg: change pointers so that 1 diagnostic can be used
1429      several times with different frequencies.
1430    o mnc-ify the thsice package as requested by Daniel Enderton
1431      - the monitor--MNC output needs work
1432      - many attributes need to be added (most are currently blank)
1433    o mnc-ify theaim_v23 package as requested by Daniel Enderton
1434      - many attributes need to be added (most are currently blank)
1435    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
1436    o add Sadourny like discretization to the 4th.O vorticity advection scheme
1437    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
1438      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
1439         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
1440    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
1441     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
1442    
1443    checkpoint57i_post
1444    o Diagnostics package was changed: diagnostic allocation is now deactivated
1445      by setting an empty file name in the namelist (used to be by setting 0 frequency)
1446    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
1447      add 1rst Order upwind vertical Shear.
1448    o add a quick fix for A/B checkpointing in OFFLINE mode
1449    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
1450      end-run around the C/Fortran linking horror in eesup/src/timers.F
1451    o added pkg/runclock: allows user to terminate run based on wall clock
1452    o added non-hydrostatic scaling parameter: nh_am2
1453    o pkg/my82: futile attempt to make results compiler-independent by adding
1454      some "_d 0", etc. no effect.
1455    o for mnc output, fill the 'T' coordinate var with myTime and create a
1456      separate 'iter' variable for iteration count
1457    o pkg/diagnostics:
1458      add new capability: output of Global/Regional & per-level statistics ;
1459      tested against monitor output (including land & thSIce) on various exp.
1460    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
1461    
1462    checkpoint57h_done
1463      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
1464      data.diagnostics, data.gchem, data.ptracers) is done.
1465    
1466    o pkg/diagnostics: prepare for Global/Regional statistics.
1467      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
1468    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
1469      and rename it: DIFFERENT_MULTIPLE
1470    
1471    checkpoint57h_post
1472    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
1473    o pkg/diagnostics: change output frequency, now in seconds (instead
1474      of Nb of iterations). This requires to change data.diagnostics.
1475    checkpoint57h_pre
1476    
1477    o in mnc, let the user create the output dir if both mnc_outdir_date
1478      and mnc_outdir_num are false
1479    o add fflags() to pkg/diagnostics which allows one to specify, on a
1480      per-file basis, the file precision [default behavior is unchanged]
1481    o added diagnostics to pkg/kpp, including computation of mixed layer
1482      depth based on a temperature/density criterion
1483    o updated verification/natl_box to test the new pkg/kpp diagnostics
1484    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
1485    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
1486    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
1487      not mnc -- this mistake was found by JMC and is now corrected
1488    
1489    checkpoint57g_post
1490    o add Adams-Bashforth 3rd Order time stepping:
1491      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
1492      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
1493    checkpoint57g_pre
1494    
1495    o make lambda[Theta,Salt]ClimRelax spatially varying
1496      (default remains spatially uniform constant based on tau)
1497    o added new control variables
1498      * init. uVel, vVel, etanN
1499      * lambda[Theta,Salt]ClimRelax
1500    o separate masks used for ctrl_pack/unpack 'from write_grid' output
1501      (suggested by G. Forget)
1502    
1503    checkpoint57f_post
1504    o add parameter "baseTime" = model base time = time at iteration zero
1505      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
1506      account for baseTime shift
1507    o move Coriolis arrays from PARAMS.h to GRID.h
1508    checkpoint57f_pre
1509    
1510    o mnc-ifying the seaice package
1511    o introduced an alternative length scale calculation for use in the limiting
1512      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
1513    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
1514    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
1515      as well as grad(vort3).  Made it compatible with both approximate form
1516      for the cubed sphere and full form of these gradients.  Added flag
1517      useFullLeith to select between approximate and full form.  
1518    o add "d0" in getcon.F to reduce differences between compilers/platforms
1519      update output.txt of exp. fizhi-gridalt-hs
1520    o change port_rand funtion to allow to set the seed.
1521    o fix obscure MNC bug involving conversion between reals and integers
1522      - it caused no problems with certain (eg. gcc, ifc) compilers but the
1523        new version is now more standards-compliant
1524    o adjoint-related modifications
1525      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
1526      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
1527      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
1528    
1529    checkpoint57e_post
1530    o Adding eddy stress controls a la Ferreira et al.
1531    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
1532    
1533    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
1534      update output.txt of exp. fizhi-gridalt-hs
1535    o add more "Z" dimensions and associated coordinate vars to MNC
1536    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
1537    o parameter calendarDumps: when set, approximate months (30-31 days) and years
1538      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
1539      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
1540      months and years.  Requires pkg/cal.
1541    o diagnostics: add pickup functionality
1542      - off by default for backwards compatibility
1543      - current version only uses MDSIO -- MNC will be added
1544    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
1545    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
1546    
1547    checkpoint57d_post
1548    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
1549    o modify verification/ideal_2D_oce so that it tests the creation of mnc
1550      output from the diagnostics package
1551    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
1552    o make genmake2 more portable by using ".$FS" instead of ".f" for more
1553      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
1554    o add coordinate variables to the MNC output from the diagnostics package
1555    o change MNC-flags default value: true when useMNC=TRUE
1556    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
1557      the ability (off by default) to read the grid information using MNC
1558    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
1559    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
1560    o do snap-shot diagnostics at the middle of the time-interval (instead of
1561      at the end).
1562    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
1563      new test for AIM with thSIce + slab-ocean
1564    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
1565    o move state variable diagnostics to the beginning of the time step ;
1566      (note: still needs some work specially for snap-shot diagnostics)
1567      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
1568    
1569    checkpoint57c_post
1570    o Change testing option (-ieee) to get closer agreement between g77 & ifort
1571    o generate new output.txt files on faulks with g77 & the new -ieee option
1572    checkpoint57c_pre
1573    
1574    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
1575      update output.txt of exp. global_ocean.90x40x15
1576    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
1577      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
1578    o add saltFlux(+File) forcing capability with periodicExternalForcing
1579    o allow to use pkg diagnostics for GM-Redi & ThSIce output
1580    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
1581    o improvements for the MNC output from DIAGNOSTICS:
1582      - correct handling of the unlimitied dimension
1583      - all dims now have associated coordinate variables
1584      - variables located at U, V, and Corner ("Z") points are now written
1585        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
1586        *all* data points are output
1587    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
1588    o added pkg/seaice/seaice_monitor.F
1589    o mdsio_readfield.F can now read files visible only to master MPI process.
1590    o pkg/seaice: some test code for ice-modified ocean stress
1591    o exf_getffields interpolation defaults to bilinear for all scalar forcing
1592      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
1593      spurious negative numbers for precipitation and humidity.  Will cause
1594      some small numerical differences for integrations using pkg/exf/exf_interp.F.
1595    o pkg/ctrl/
1596      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
1597        May be enabled via doPackDiag
1598      *  introduce z-scaling of
1599         + gradient (doZscalePack) and
1600         + control (doZscaleUnpack)
1601    o pkg/mdsio/
1602      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
1603      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
1604    
1605    checkpoint57b_post
1606    o simplify options in diagnostics_fill arguments (remove weird combinations)
1607    o fix MNC coordinate variables so that they now contain per-face index
1608      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
1609      general, EXCH2 grids are only aligned to a "local" coordinate system
1610    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
1611    o Implement instantaneous output within pkg diagnostics:
1612      setting a negative frequency in data.diagnostics produces
1613     "snap-shot" output (as opposed to time-average if freq > 0)
1614    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
1615      NOTE: change ptracer diagnostics name: use 2 characters to work with
1616            more than 9 tracers. Add also diagnostics of advect & diffus flux.
1617    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
1618      becomes the coordinate variable for the 'T' dimension
1619    o add CF-style coordinate variables to MNC
1620      - just a first cut:  numbers are meaningless on the cubesphere and
1621        missing along the T axis but otherwise it works!
1622    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
1623    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
1624    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
1625      this is based directly on what the model compute, so that the content of
1626      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
1627    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
1628    o clean up build options files for SunOS, in particular
1629      - remove -traditional from xmakedepend
1630      - change -xarch=v9 to -xarch=native for f77
1631      - restore use of make (not gmake)
1632      - add CC=gcc if using g77
1633    o changes per discussion of AM, JMC, & EH3 today:
1634      - move redundant "grid" variables out of "state" -- in preparation of
1635        creating proper CF-style coordinate variables and in recognition
1636        that any/all grid variables can be easily copied (eg. w/NCO) from
1637        the grid files into any of the other NetCDF files
1638      - *always* output grid variables with MDSIO (this will eventually be
1639        changed)
1640      - output MNC grid file if useMNC is true
1641    o every instance of _END_MASTER() has been found and replaced with
1642      _END_MASTER( myThid ) in order to satisfy certain picky Sun
1643      preprocessors
1644    o re-arrange diagnostics pkg initialisation:
1645     - allow each package to extend the available diagnostics list
1646     - add some checking and fix small problems (multi-threaded, ...)
1647     - new S/R diagnostics_fill (replace fill_diagnostics):
1648       look through the short list of active diag. (instead of the long list)
1649       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
1650    
1651    checkpoint57a_post
1652    o this set of changes restores TAMC compatibility
1653      tested for global_ocean.90x40x15 adjoint on trough
1654      (what a pain)
1655    
1656    checkpoint57a_pre
1657    o some modifs in tools/build_options for sunos
1658    o call ctrl_pack for ctrl at end for optimcycle=0
1659    
1660    checkpoint57
1661    o add horizontal bi-harmonic viscosity for vertical velocity
1662      - new parameter viscA4W (defaults to viscA4)
1663      - affects only non-hydrostatic code
1664      - to be done: no-slip lateral boundary conditions
1665    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
1666    o implement Implicit Vertical advection for pTracers
1667    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
1668      (implemented also for implicit vertical diffusion & advection)
1669    o OBCS: extend application of tracer open boundary conditions
1670      to a strip beyond the boundary of width Olx/Oly
1671    o add call monitor to TAF set of required calls (flow directives)
1672      and include in natl_box_adjoint
1673    o untangle a few ifdefs related to cost, ctrl, autodiff
1674      untangel a few ALLOW_ECCO_OPTIMIZATION
1675    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
1676      (theta2, salt2 in ecco_cost_weights)
1677    
1678    checkpoint56c_post
1679    o OBCS as control variables
1680      - update ctrl_ad_diff.list, obcs_ad_diff.list
1681      - remove balance of obcs controls from default
1682      - fix index bug nobcs in ctrl_init
1683      - fix dummy fields filen in ctrl_pack
1684      - add dummy weights for obcs
1685    o lsopt: comment out fort.94 output
1686    o optim:
1687      - remove unnecessary header files
1688      - adjusted namelists
1689      - add xerbla.F to Makefile
1690    o exf:
1691      - multiple modifications of exf_check_range
1692      - unit change in exf_init_runoff from [m/year] to [m/s]
1693    o mdsio:
1694      - i/o-vector change debugLevel from debLevA to debLevB
1695    
1696    checkpoint56b_post
1697    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
1698      is called from DO_THE_MODEL_IO
1699      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
1700      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
1701      - clean up PTRACERS_WRITE_TIMEAVE a little
1702    o add another verification experiment that tests both the cfc-pkg and
1703      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
1704      reactive tendencies treated inline with regular timestepping
1705    o testreport previously did a lousy job of comparing small numbers, so
1706      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
1707      implemented in the little c-progam tmp_cmpnum.c which is embedded in
1708      testreport.
1709    o ptracers_monitor: bug fix for MPI
1710    
1711    checkpoint56a_post
1712    o GCHEM: finish reorganizating the package
1713      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
1714        (introduces another 3D-array for each passive tracer, but only if
1715        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
1716        gchemTendency is not needed because the timestep is done separately)
1717      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
1718      - GCHEM is now---more or less cleanly---separate from PTRACERS
1719      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
1720        so clear to me how that should be done in a general way.
1721    o CFC: improve formatting of output in CFC_ATMOS
1722    o PTRACERS:
1723      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
1724        that ALL experiments with ptracers enable can be checked. This makes
1725        GCHEM_MONITOR obsolete.
1726      - include a runtime parameter PTRACERS_monitorFreq that defaults to
1727        monitorFreq
1728      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
1729    o add PTRACERS (PTR0[1-5]) to testreport output
1730    o exf_check_range:
1731      * default changed to .TRUE.
1732      * will check values for niter0 if debLevA, every timestep if debLevB
1733      * STOP in exf_check_range if 'out of range'
1734      * range chosen generous to allow for potential extema
1735      TBD: a version with stricter range
1736           permitted range would be runtime parameters
1737    o GMredi:
1738      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
1739      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
1740      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
1741    o GCHEM:
1742      - move call to GCHEM_FORCING_SEP, so that it is now called before
1743        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
1744      - introduced a useGCHEM runtime flag and applied it everywhere.
1745      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
1746        this flag is now only visible within GCHEM-pkg routines.
1747      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
1748        be replaced by a 3D array that is computed before thermodynamics; for
1749        this, the tracer ID iTracer had to be included into the parameter list
1750        of ptracers_forcing
1751      - set up forward_step to call gchem_forcing, that will replace
1752        gchem_forcing_int in ptracers_forcing
1753      - cleaning up
1754    o small cleaning of exch2: remove files that are also in eesupp/src
1755    
1756    checkpoint56
1757    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
1758    o mnc: cleanup "full" files--fixes out-of-memory problem
1759    o ECCO-GODAE
1760      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
1761      * fully merged and updated from SIO code
1762        windstress sign change affects
1763        - exf_inscal_[u/v]stress
1764        - sign of xx_tau[u/v] adjustments
1765        - signs in cost_scat
1766      * ctrl_get_gen: avoid update of tau[u/v] for first few days
1767      * natl_box_adjoint updated and compressed
1768      * 2-level checkpoint switch added
1769        (tested in EXP. 1 of natl_box_adjoint)
1770      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
1771    o SVD
1772      * first complete, non-hacked version for SVD calculations
1773      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
1774        performed via direct access files admtlm_vector.it????
1775        (via ctrl_[un]pack)
1776      * optimcycle is used for ARPACK iteration counter
1777        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
1778      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
1779        and add linear transforms where necessary
1780      * controls are initial/final SST, SSS (can be extended; need to check
1781        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
1782    o mdsio: filename info to both stderr, stdout
1783    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
1784      from sign change
1785    
1786    checkpoint55j_post
1787    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
1788      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1789    o add consistent build directories and .cvsignore files to verification
1790    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
1791    o make all subroutines 30 or less characters in length for certain older
1792      compilers to work (a thorough search only turns up two routines in
1793      pkg/ptracers)
1794    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
1795      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1796    
1797    checkpoint55i_post
1798    o change arrays for total vertical diffusivity (2.D if explicit,
1799      3.D if implicit) ; each ptracer uses its own background value.
1800    o added mnc/NetCDF output capability to ocn_compon_interf
1801      - added bits to verification/cpl_aim+ocn so that it can run on
1802        ITRDA and other clusters without the mpirun "-wd" option
1803    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
1804      configuration
1805    o give MNC the ability to create additional files rather than
1806      exceeding a specified file size limit "MNC_MAX_FILESIZE"
1807      - the default is just less than 2GB which is a practical limit
1808        on many systems
1809    o Compute the non-local term using either KPP vertical diffusivity (=default)
1810       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
1811    
1812    checkpoint55h_post
1813    o add verification test "vermix"
1814    o remove all the *_ioinc flags and replace with the single global
1815      outputTypesInclusive flag
1816    o allow to set a vertical profile of vertical diffusivity for T & S
1817    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
1818    o useMNC moved from data.mnc to data.pkg
1819    
1820    checkpoint55g_post
1821    o Renaming carbon AD experiments to comply with testreport conventions
1822    o Updating adjoint of Held-Suarez hs94.1x64x5
1823    o Fixing directives for non-ECCO forward_step, after ECCO directives
1824      have been fixed to avoid recomp. of do_oceanic_phys
1825      Works well for global_ocean.90x40x15,
1826      but recomp. issue remains for carbon
1827    o Updating adjoint output for natl_box_adjoint after
1828      pkg/ecco has been modified (see taga c55d_post)
1829    
1830    checkpoint55f_post
1831    o rename to timeave_init_fixed
1832    
1833    checkpoint55e_post
1834    o some delicate re-shuffle of store directives to avoid one
1835      extra call of do_oceanic_physics
1836      affects ecco_the_main_loop.F, do_oceanic_physics.F
1837      checkpoint_lev1_directives.h
1838    o NB: this may break global_ocean adjoint temporarily,
1839      but it is clear how to fix it. Will do later, need this now.
1840    
1841    checkpoint55d_post
1842    o ECCO specific cost function terms (up-to-date with 1x1 runs)
1843    o ecco_cost_weights is modified to 1x1 runs
1844    o modifs to allow observations to be read in as
1845      single file or yearly files
1846    o enable to read exf forcing fields as either
1847      single file or yearly files (flag useExfYearlyFields)
1848    checkpoint55d_pre
1849    
1850    o switch between 2-level and 3-level checkpointing
1851    o add ability of MNC to write local and "partial" (eg. 2D slices where
1852      the full 3D field is never actually stored) arrays to NetCDF files
1853      with the correct (that is, the complete multi-dimensional) set of
1854      array indicies
1855      - used in mom_vecinv() to write the diagFreq output
1856      - tested (demonstrated) in verification/aim.5l_cs
1857    o further mnc-ification
1858      - add verification/lab_sea to the list with mnc setups
1859      - fix undefined mnc v-names in cd_code
1860      - add kpp to mnc output (both snapshot and timeave)
1861    o non-hydrostatic code
1862      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
1863        in calc_gw.F
1864      - defaults to viscAh
1865      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
1866        friction or Leith) in non-hydrostatic mode, as long as there is
1867        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
1868    o pkg/cost
1869      extend simple cost functions to treat time mean quantities
1870      (T,U,V) via cost_accumulate_state from cost_tile
1871    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
1872        be 2 times larger than the minimum size the advection scheme requires.
1873        now get a perfect conservation of salt in advect_cs test-exp (updated)
1874    o GGL90 (Gaspar's TKE mixed layer)
1875      - add horizontal diffusion of TKE, requires exchanges in
1876        do_fields_blocking_exchanges, horizontal diffusivity is zero by
1877        default. In OPA there is no horizontal diffusion of TKE but the
1878        mixing coefficients are computed from a horizontal average of TKE of
1879        6 points or so. I think that diffusion has a little more physical
1880        justification.
1881      - clean up ggl90_calc in the hope of reducing memory usage (this hope
1882        was in vain)
1883      - mask tke-variable in ggl90_init
1884    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
1885    o fix biharmonic diffusion on CS-grid.
1886    o more obcs stuff
1887      - added obcs_external_fields_load as an alternative to the EXF-pkg option
1888        for reading boundary values. This routine is called from
1889        obcs_prescribe_read
1890      - updated obcs_check
1891      - changed sponge layer relaxation parameter units for days to seconds
1892      - turned off sponge layer by default
1893      - changed argument list of OBCS_CALC to myTime+deltaTclock
1894      - fixed about 35 bugs in obcs_external_fields_load
1895    
1896    checkpoint55c_post
1897    o obcs stuff
1898      - new runtime flags useOBCSprescribe, useOBCSbalance
1899      - re-arranged obcs_calc
1900      - moved exf_getobcs to obcs_prescibe_read
1901        obcs_prescibe_read is called after ORLANSKI stuff
1902        and independent of it (executable can contain all).
1903      - updated obcs_check
1904      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
1905        These may be necessary only if tangential velocities are
1906        prescribed at OB, not sure, needs testing.
1907    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
1908      which simplifies the calls and passes the ifc check-bounds test
1909    
1910    checkpoint55b_post
1911    o add a 2D scalar, Z location, exchange_2 routine.
1912    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
1913      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
1914      affects advect_cs results (for the wrong reason): update output.txt
1915    o use a more standard discretization for biharmonic viscosity ;
1916     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
1917      affects results of dome set-up: update output.txt
1918    o fix gad_advection.F (CubedSphere part), back to version 1.23
1919    o fix bug in mom_vi_del2uv.F (CubedSphere part).
1920    
1921    checkpoint55a_post
1922    o merged code to
1923      * prescribe/read time-dependent open boundaries
1924        (works in conjunction with exf, cal)
1925      * sponge layer code for open boundaries
1926      * each boundary N/S/E/W now has its own CPP option
1927        (healthy for the adjoint)
1928    
1929    checkpoint55
1930    o up-to-date adjoint of previous breaks
1931      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
1932      - global_ocean_ebm: adjoint still needs fix (TLM ok)
1933      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
1934      - carbon: * remove tr1-related adjoint verification
1935                * add ptracer as control variable
1936    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
1937      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
1938    
1939    checkpoint54f_post
1940    o in verification/carbin/ remove experiment related to
1941      ALLOW_PASSIVE_TRACER (array tr1 etc)
1942      code_ad/ input_ad/ results_ad
1943    
1944    o add two new packages
1945      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
1946        + subject to optimization (memory)
1947      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
1948        + subject to reordering (many GOTOs in the original code)
1949        + so far opps is called for every (i,j) point, and then operates in
1950          the vertical; one may want to reorder the scheme in order operate in
1951          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
1952          fields)
1953    o overhaul of IO so that we now have flags for MDSIO and/or MNC
1954      - all verification tests compile and run with linux_ia32_g77
1955      - defaults are compatible with current input files--nothing
1956        should change if you were not previously using MNC
1957      - MNC output has been added in numerous places (eg. timeave)
1958        but there are still a few writes not yet do-able with MNC
1959        (this is in progress)
1960      - flags now allow for either/or/both use of MDSIO and MNC and
1961        documentation will soon follow
1962      - numerous small formatting cleanups for ProTeX
1963    o add version info (via BUILD_INFO.h) to MNC and stdout
1964    
1965    checkpoint54e_post
1966    o add two new packages
1967      - pp81 (Packanowski and Philander, 1981), Richardson number and
1968        stratification dependent mixing
1969      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
1970      - these scheme operate in a similar manner as KPP (without ghat, of
1971        course), however there is only one diffusivity that is used for both
1972        temperature and salinity (and passive tracers)ç
1973    o add offline package
1974    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
1975      provided by Stephanie Dutkiewicz
1976    o genmake2: add ability to search for C compilers and cleanup test output
1977      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
1978    
1979    checkpoint54d_post
1980    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
1981    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
1982      leading to additional shift by 5 days each year of integration
1983       (i.e. leading to considerable offset over the years)
1984    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
1985    o start with no AB and no initial filtering (staggerTimeStep):
1986      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
1987    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
1988      (external loading & cpl import/export stay in forward_step.F)
1989    o update coupling interface to work with new staggerTimeStep
1990    o change MDSIO ptracers_pickup.
1991    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
1992    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
1993    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
1994    
1995    checkpoint54c_post
1996    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
1997      this affects (truncation error) output.txt of test-exp:
1998       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
1999    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
2000    o change Qnet to always be the net heat flux, (+upward).
2001      affects (truncation error) output of natl_box exp.: updated
2002    o define the max number of passive tracers in PTRACERS_SIZE.h
2003    o start to test mnc routinely in exp0
2004    o add sea-ice loading (sIceLoad) as a new forcing field.
2005    
2006    checkpoint54b_post
2007    o add testreport "-j JOBS" option for parallel builds (tested and pretty
2008       impressive on Altix and Opteron systems)
2009    o diagnostics can now write NetCDF files through the mnc package
2010    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
2011    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
2012    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
2013      affects (truncation error) output of lab_sea & natl_box exp.: updated
2014    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
2015    
2016    checkpoint54a_post
2017    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
2018    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
2019    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
2020    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
2021      + internal_wave (shift in writing cg2d_ini_res)
2022    checkpoint54a_pre
2023    
2024    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
2025      - modified verification/lab_sea and natl_box_adjoint accordingly
2026    
2027    checkpoint54
2028    checkpoint53g_post
2029    o prepare splitting of thermodynamics: store convect.counter in common block
2030    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
2031      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
2032    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
2033    o new parameter "nShapS": allow to treat differently S from T (nShapT)
2034    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
2035    o restore adjointability
2036    
2037    checkpoint53f_post
2038    o modifications that affect AIM experiment results (update output.txt):
2039      - no advection of S at top interface Nr (pkg/generic_advdiff)
2040      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
2041    o AIM pkg:
2042      - include stability function into surf.Flux derivative relative to Tsurf
2043      - calculate clear-sky radiation & surface temp. change (for diagnostics)
2044    
2045    checkpoint53e_post
2046    o merged cylindrical coord configuration
2047    o added rotating_tank experiment
2048    checkpoint53e_pre
2049    
2050    checkpoint53d_post
2051    o faulks upgraded: re-generate output.txt that have changed:
2052       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
2053    o Added Bryan and Lewis, 1979, vertical diffusivity profile
2054    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
2055    o added Sadourny discretization of Coriolis
2056      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
2057      - re-enabled use of omega3 (useAbsVorticity)
2058    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
2059      vector-invariant equations
2060      - note: does *NOT* yet use same variable visc. for no-slip BC's.
2061    o recoded the lateral boundary conditions for non-hydrostatic w, this time
2062      hopefully without new bugs
2063      - still to do: biharmonic friction for non-hydrostatic w
2064    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
2065    o regenerated output for global_ocean_ebm (using -ieee)
2066    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
2067      of mom_common/
2068      - simple re-arrangement of instructions within computing loop
2069    checkpoint53d_pre
2070    
2071    checkpoint53c_post
2072    o new version of coupler for AIM+thSIce and Ocean models
2073     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
2074     - land: change Evaporation of snow
2075     - aim with thSIce: fix bug in snow-precip.
2076    o changes to calc_gw.F
2077     - bug fix for w^2 term near the bottom boundary
2078     - (hopefully) improve the lateral slip boundary condtions for use with
2079        partial/looped cells
2080      - because the bug fix changes two verification experiments anyway (exp5
2081        and plume on slope), change the lateral boundary condition from half slip
2082        to the value of no_slip_sides
2083    o ebm package wasnt quite up to the parallel task. Fixed that.
2084    o Adjoint of EBM package + verification
2085      * TLM OK
2086      * ADM not sufficient accuracy yet (needs further testing)
2087    
2088    checkpoint53b_post
2089    o Commiting new energy balance model to repository
2090      * package is pkg/ebm
2091      * verif. is verification/global_ocean_ebm
2092      * references are in ebm_driver.F
2093    C      * X. Wang, P. Stone and J. Marotzke, 1999:
2094    C        Global thermohaline circulation. Part I:
2095    C        Sensitivity to atmospheric moisture transport.
2096    C        J. Climate 12(1), 71-82
2097    C      * X. Wang, P. Stone and J. Marotzke, 1999:
2098    C        Global thermohaline circulation. Part II:
2099    C        Sensitivity with interactive transport.
2100    C        J. Climate 12(1), 83-91
2101    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
2102    C        Destabilization of the thermohaline circulation
2103    C        by atmospheric eddy transports.
2104    C        J. Climate 7(12), 1870-1882
2105    o Will need long integration testing.
2106    checkpoint53b_pre
2107    
2108    o created pkg/mom_common in preparation for variable viscosity code
2109    o renamed and split ini_mnc_io
2110    o pkg/land: only liquid water can diffuse or run-off
2111    o AIM using land: soil wetness availability account for snow
2112    o added printMapIncludesZeros to EEPARMS namelist
2113    
2114    checkpoint53a_post
2115    o restore TAMC compatiility for exf_constants.h
2116      (no usage of _d in .h)
2117    o Additional storing in KPP in an attempt to fix
2118      TAMC problem with adjoint of KPP code.
2119      (no success...)
2120      Identical code works fine with TAF.
2121    o Fixed verification/natl_box_adjoint experiments.
2122      Initial conditions for Experiments 4 and 5 are now
2123      set to "SEAICE_initialHEFF=0", which is more reasonable,
2124      and hence gives results closer to that of Experiment 2.
2125      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
2126    
2127    checkpoint53
2128    o stable checkpoint with up to date adjoint
2129      TLM tests only run for 1st grdchk at the moment. Its unclear if
2130      this is a code problem or a problem with resetting code for g_
2131      variables that is being autogenerated wrong.
2132      Otherwise:
2133       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
2134       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
2135         are both still in chaos following their security messes.
2136    
2137    checkpoint52n_post
2138    o various build (mostly genmake2) changes including:
2139      - ability to build/run more easily within Cygwin and MacOS X
2140      - more complicated Makefiles with a stronger dependence on Gnu Make
2141    o pkg/seaice modifications
2142      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
2143        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
2144        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
2145      - changed proxy for geostrophic velocity and updated
2146        verification/lab_sea/results/* accordingly
2147      - removed ADI dynamic solver from pkg/seaice
2148      - replaced all occurrences of 1/CSTICE or 1/CSUICE
2149        they caused a segmentation fault under certain circumstances
2150      - removed unused field WATR
2151    o bug fix in exf-package:
2152      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
2153         now reflect that.
2154    o small fixes in the cal-package:
2155      - set reference date to first of January for the 'model'-calendar
2156      - failing of cal_CheckDate in cal_FullDate now actually results in a
2157        warning
2158    o small modifications in exf-package to increase flexibility:
2159      - change climtempfreeze from a constant to a runtime parameter that
2160        is specified in data.exf_clim (default = -1.9)
2161      - introduce runtime parameter windstressmax (default = 2.0) that is
2162        specified in data.exf
2163    o fix in pkg/thsice:
2164      - update Evap (Tsf changes) to be consistent with Latent heat flux
2165      - maintain snow precipitation unchanged (even if Tsf >=0).
2166     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
2167    
2168    checkpoint52m_post
2169    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
2170      this does not change any of the results, because myIter=0 in swfrac always
2171      lead to jwtype=2 (the default anyway), but the call makes little sense
2172      as a default
2173    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
2174    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
2175      atmospheric model (AIM) to use it ; add a "slab ocean" component.
2176    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
2177    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
2178    o extending useSingleCpuIO option to work with new exch2 I/O format
2179      - old-style, missing-tile I/O is still accessible by defining CPP
2180        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
2181    o monitor package can write to NetCDF files and/or STDOUT
2182    o fix re-definition bug in MNC_GRID_INIT_ALL()
2183    o doc/api_reference added
2184      - a framework for building an API Reference Manual using all
2185        the "protex" comments embedded in the code
2186      - see pkg/generic_advdiff, pkg/mnc for examples
2187    o MNC:
2188      - make myThid the last argument for all subroutines
2189      - new default for the grid files: NO halos
2190      - add useMNC and other run-time flags
2191      - separate per-file-group handling of the unlimited dimension
2192      - early initialization of MNC w/ flags read at the eeboot stage
2193        and lookup tables set in initialize_fixed
2194      - write all MNC output to a freshly-created directory
2195    o thermodynamics sea-ice (thsice) is now tested with testreport.
2196    o test exp. advect_cs: use the standard cs32 grid ; update output.
2197    o Added functionality to grdchk:
2198      pick global i,j,k position (or nearest wet) where to perform check.
2199    
2200    checkpoint52l_post
2201    o new land formulation:
2202      a) use ground enthalpy as prognostic variable to ensure exact
2203         energy conservation.
2204      b) account for water temperature and for latent heat of freezing
2205         in all processes (rain, run-off, ground storage)
2206      c) compute surface and ground temperature implicitly.
2207    o aim_v23 modification for new land model:
2208      a) Treat separately land / ocean / sea-ice surface fluxes
2209         to allow implicit computation of land & sea-ice surface temp.
2210      b) add snow precipitation.
2211    checkpoint52l_pre
2212    
2213    o fix problem (when 1 tile is empty) in min/max monitor.
2214    o fix bug in timeAve (u,vZetatave in common block)
2215    o no restoring terms under ice for pkg/seaice
2216    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
2217    o bug fix for pkg/seaice pickups
2218    o change MNC call locations and add coordinate attributes
2219    o mask vorticity at the corner ; affects global_ocean.cs output
2220    o fix ini_curvilinear_grid ; test CS experiments with mpi
2221    o aim.5l_cs: modify sea-ice fraction input file ; update output
2222    o exf: Adding simple range check routine for exf fields after read
2223    
2224    checkpoint52k_post
2225    o removed top-level directory "diags"
2226      - we migrated these functions to pkg/timeave a long time ago
2227    o fixed bug introduced in pkg/monitor
2228    o accuracy ctrlprec = 32 insuffient for gradient checks using
2229      averaged fields (I/O via cost_averages)
2230      -> use ctrl.h in active_file*.F to control I/O precision.
2231    o paramter list of CALL ADTHE_MAIN_LOOP
2232    o added initial do_the_model_io to ecco
2233    o set all ...Freq to zero after cost_final
2234      taveFreq, dumpFreq, pChkptFreq
2235    o MAIN and ECCO differentiability restored
2236    
2237    checkpoint52j_post
2238    o fix nchklev in tamc.h for global_ocean...
2239    o Bringing flow and store directives up-to-date
2240    o Really weird thing!
2241      call do_the_model_io from the_main_loop with parameters
2242      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
2243      TAF places a faulty re-call of initialise_varia
2244      after cost_final call which should not be there!
2245    checkpoint52j_pre
2246    
2247    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
2248      error messages
2249    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
2250    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
2251      debug output
2252    o modfied mdsio_writefield.F to handle non-global files under exch2
2253    o update AIM Cubed-Sphere exp (aim.5l_cs):
2254      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
2255    o update AIM Equatorial Channel exp:
2256      use standard aim_v23 pkg and change the SST fields to be more realistic.
2257    o globalFile now works with exch2
2258    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
2259      mon_vort3.F to make exch2 friendly with >1 tile per cube face
2260    o limit timeave output for hi-res integrations
2261    
2262    checkpoint52i_post
2263    o removed CPP_EEOPTIONS.h from verification/*/code
2264    o updated the tiling for global_ocean_pressure
2265    checkpoint52i_pre
2266    
2267    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
2268      the old pkg/aim).
2269    
2270    checkpoint52h_pre
2271    o shortened offending lines in exch2_send_rx?.template
2272    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
2273    o genmake2: add build & execute test for NetCDF code
2274    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
2275      old grid files, moved CPP_EEMACROS.h to pkg/exch2
2276    o added useSingleCPUIO flag to monitor.F and mon_out.F
2277    o added temporary hack for sea-ice dynamics on the cube:
2278      metric terms are ignored and it is assumed that
2279      there is no sea-ice on cube faces 1, 2, 4, and 5.
2280    
2281    checkpoint52f_post
2282    o added exch2 cube routines to pkg/exch2
2283    o modified hs94.cs-32x32x5 to use it
2284    o added new grid files to hs94.cs-32x32x5
2285    checkpoint52f_pre
2286    
2287    checkpoint52e_post
2288    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
2289      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
2290    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
2291      to work with implicit vertical advection and AB ;
2292    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
2293    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
2294     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
2295    checkpoint52e_pre
2296    
2297    o fix bug in impldiff when Nr=1 or Nr=2.
2298    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
2299    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
2300    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
2301      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
2302    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
2303    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
2304    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
2305    
2306    checkpoint52d_post
2307    o re-tiled many expts to allow comparison in multi-processor mode
2308      - updated output accordingly
2309      - changed hs94.128x64x5 to use intial T from file rather than use the
2310        random number generator
2311    o add infrastructure in model routines for fizhi and gridalt packages
2312    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
2313    o changes to permit hi-res, cubed-sphere, configuration
2314      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
2315      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
2316      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
2317        of surface winds for the cube
2318      (A verification experiment, based on global_ocean.cs32x15, but with
2319       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
2320       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
2321       complete with example surface forcing files and matlab scripts to look
2322       at the output and compare it with that of global_ocean.cs32x15.)
2323    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
2324       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
2325       to conform to the common rule.
2326    o check-in the first version of the coupler + interfaces for multi-components
2327       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
2328       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
2329       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
2330       - ocean and atmos. share the same horizontal grid (no interpolation).
2331       - exchanges between component and coupler is done in forward_step
2332    o new verification experiment, cpl_aim+ocn:
2333       coupled ocean - AIM atmosphere on cs32 grid.
2334    
2335    checkpoint52d_pre
2336    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
2337    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
2338    
2339    checkpoint52c_post
2340    o Fixing OPTIONS files for use of exf:
2341      - ALLOW_ECCO not needed
2342      - ECCO_CPPOPTIONS.h should not be included from
2343        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
2344        as has been the case in the past
2345      - All cal/exf related options are currently set in
2346        single header file. Should remain so until we
2347        agree on a consistent new policy.
2348    o Removed all CPP options for cal package.
2349      cal has no more CPP options.
2350    o modified STOREs in GAD_ADVECTION
2351    o corrected key comp. for passkey
2352    
2353    checkpoint52b_post
2354    o new version: "thsice" of thermodynamic sea-ice pkg:
2355     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
2356     - modify fluxes but do not change theta directly;
2357     - light cleaning of bulk_force pkg (still needed with thsice).
2358     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
2359       + output_thsice.txt to test thsice & bulk_force pkgs.
2360    o put back grid & coriolis monitor output.
2361    checkpoint52b_pre
2362    
2363    o call "do_the_model_io" at the beginning (=> dump initial state)
2364    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
2365    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
2366      (need info on NUMBER_OF_PTRACERS)
2367    o missing PTRACERS headers in some routines
2368    o default tamc.h in pkg/autodiff supposed to crash
2369      to ensure proper customization
2370    
2371    checkpoint52a_post
2372    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
2373      - moved surfaceTendencyTice from pkg/seaice to main code
2374      - subroutine FREEZE_SURFACE now limits only surface temperature
2375        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
2376        => new output.txt for global_ocean.cs32x15 & global_with_exf
2377      - keep the old version of FREEZE for backward compatibility;
2378        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
2379      - corresponding modifs for TAF directives
2380    o added surface flux output variables to TIMEAVE_STATVARS
2381    o time-averaged output for pkg/ptracers
2382    o fix problem with ECCO-related divided adjoint
2383      snapshot file was missing some ad-variables,
2384      but no warning issued by TAF
2385    
2386    checkpoint52a_pre
2387    o some bug fixes for #undef REAL4_IS_SLOW
2388    
2389    checkpoint52 = ecco_c52_e35
2390    o after testing adjoints of checkpoint51u_post
2391    
2392    checkpoint51u_post
2393    o this is the post-merge tag of the ecco-branch
2394      (needs another clean checkout and re-testing)
2395    o various natl_box_adjoint configs and results
2396      but no input fields
2397    o obcs adjoint not yet merged!
2398    o adding ECCO global 1x1 and 2x2 degree configs
2399    o updated/extended some store directives for seaice
2400    o pkg/ecco now containes ecco-specific part of cost function
2401    o top level routines the_main_loop, forward_step
2402      supersede those in model/src/
2403      previous input data.cost now in data.ecco
2404      (new namelist ecco_cost_nml)
2405    o in ctrl/ cleaned some cross-dependencies and updated CPP options
2406    
2407    checkpoint51t_post
2408    o this is the pre-merge tag of the ecco-branch
2409    
2410    checkpoint51s_post
2411    o cleanup: removed various obsolete #define-s
2412    o pkg/grdchk
2413      - renamed 'ph-grd 3' to 'grad-res'
2414      - merged from ecco-branch
2415        (remaining bug fixes for obcs gradient checks)
2416      - additional high-precision output for testreport
2417        (grep for 'precision_grdchk_result')
2418    
2419    checkpoint51r_post
2420    o cleaned up or removed CPP_OPTIONS.h files
2421    o updated results for some of the tests to reflect the new
2422      optfiles (-ieee: -O0 instead of -O3)
2423    
2424    checkpoint51q_post
2425    o cd_code:
2426      - moved cd_scheme.F -> cd_code_scheme.F
2427      - separate read_checkpoint from cd_code_ini_vars.F
2428      - separated cd_code part from write_checkpoint
2429      - updated AD_SOURCE, generated .flow
2430      - added CD_CODE_VARS.h to the_main_loop
2431      - Moving cd_code specific store dir.s to pkg/cd_code
2432    o ctrl package totally restructured
2433      - pack/unpack now optional and decoupled from
2434        xx_/adxx_ I/O
2435      - ctrl_pack/unpack cleaned
2436        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
2437      - confined inclusion of AD_CONFIG.h to where necessary.
2438    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
2439    
2440    checkpoint51p_post
2441    o create initial cd_code package
2442      - WARNING: the initialization of fields within packages
2443        is broken because INI_FIELDS (where READ_CHECKPOINT is
2444        called) is called *before* PACKAGES_INIT_VARIABLES.
2445        This seems to be backwards since
2446        1) its important to initially zero the entire field including
2447           the "halo" region
2448        2) zeroing needs to be done *before* reading pickup info
2449           and the pickup call might or might not happen in any
2450           particular run
2451      - this needs an overhaul for R2
2452    o cleanup verification/*/code/GMREDI_OPTIONS.h
2453    o cleanup testreport
2454    
2455    checkpoint51o_post
2456    o bringing AD-related verif's up to date with genmake2
2457      - carbon/
2458      - global_ocean.90x40x15/
2459      - hs.94.1x64x5/
2460      - (front_relax/ )
2461    o (more) consistent directory structure for AD-related verif.'s
2462    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
2463    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
2464    o bug fix in find_alpha.F for MDJWF:
2465      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
2466        change rho -> rho-rhoConst
2467      - replace call find_rho to find_rhonum
2468    o initialisation of rFlx extended to full array (required by TAF)
2469      and shifted to thermodynamics
2470    o removed PTRACERS.h in ptracers routine
2471    o added surfacetendencyPtr to S/R parameter list pracers_forcing
2472    o Correcting initialisations for fVerU, fVerV.
2473    o helping TAF to recognize dependency on kUp for
2474      fVerU, fVerV
2475    o Replacing delZ by delR in pkg/ctrl/
2476    checkpoint51o_pre
2477    
2478    o undid all of cp51 pending some cleanups and discussion
2479    o added the [#include "AD_CONFIG.h"] statement to all files that need
2480       it for adjoint/tl #defines
2481     o re-worked the build logic in genmake2 to support AD_CONFIG.h
2482     o removed tools/genmake since it no longer works
2483    
2484    checkpoint51n_post
2485    o modifications to make FREEZE flux visible to pkg/kpp
2486      - moved surfaceTendencyTice from pkg/seaice to main code
2487      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
2488      - subroutine FREEZE now limits only surface temperature
2489        (this means new output.txt for global_ocean.90x40x15,
2490         global_ocean.cs32x15, and global_with_exf)
2491    o added surface flux output variables to TIMEAVE_STATVARS
2492    
2493    checkpoint51n_pre
2494    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
2495    o added [#include "AD_CONFIG.h"] to all files that use the following
2496      defines:
2497      - ALLOW_ADJOINT_RUN
2498      - ALLOW_TANGENTLINEAR_RUN
2499      - ALLOW_ECCO_OPTIMIZATION
2500    
2501    checkpoint51m_post
2502    o incorporating changes to get TAMC/TAF working in genmake2
2503      - added new TAMC/TAF targets to the Makefile
2504      - various cleanups related to package handling
2505      - these changes should have no impact on the forward model
2506    
2507    checkpoint51l_post
2508    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
2509     - faster algorithm for cal_addtime.F
2510     - higher precision arithmetic, where needed
2511     - pkg/exf *startdate variables changed from calendar date to
2512       model integration time
2513    
2514    checkpoint51l_pre
2515    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
2516    o enable to apply restoring on S & T only in a latitude band.
2517    o update output (external_forcing_surf modif. change truncation errors)
2518       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
2519    
2520    checkpoint51k_post
2521    o change default to: useNHMTerms=.FALSE.
2522     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
2523       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
2524     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
2525        exp1, ideal_2D_oce
2526     - change data file of oceanic exp (leave the results unchanged for now)
2527       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
2528    o set gravitySign automatically according to the vertical coordinate used
2529      (and change sign: back to "logical" value: +1 when R increases downward)
2530    o added an include barrier to the default CPP_OPTIONS.h and
2531      removed the #include "PACKAGES_CONFIG.h" from it
2532    o fix a bug in mom_fluxform (from chk51j_post)
2533    
2534    checkpoint51j_post
2535    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
2536    o adjusted some flow directives (dynamics, thermodynamics)
2537    o added cubed-sphere case to test cost function
2538    o heckpoint_lev?_directives.h now include
2539      pkg-specific directives, whenever those are enabled.
2540    o Moving pkg-specific flow directives to corresponding pkg
2541      Moving pkg-specific differentiation list to corresponding pkg
2542      Moving pkg-specific checkpoint-lev storing to corresponding pkg
2543      ---> conventions are
2544           - pkg_ad.flow
2545           - pkg_ad_diff.list
2546           - pkg_ad_check_lev?_dir.h
2547    
2548    checkpoint51i_post
2549    o merge of the branch-genmake2
2550      - knowingly breaks the older genmake
2551      - automatic generation of all ALLOW_${PKG_NAME} defines
2552      - new testreport supersedes older testscript
2553    o large number of package inclusion and header cleanups
2554    checkpoint51i_pre
2555    
2556    o new output for adjoin of global ocean vector invariant
2557    o fix for checkpoint of thermodynamic seaice and bulk_force
2558    o Steph gchem various cleanups
2559    
2560    checkpoint 51h_pre
2561    o fixed some single quotes
2562    o modify gchem pkg to be more versatile
2563    o modifications to clean up dic pkg
2564    o add pkg/cfc
2565    
2566    checkpoint51g_post
2567    o provide links for ARPACK and ADM*TLM
2568    o start removing verification/vero/
2569    o update AD-related stuff
2570      (in particular some IF-statements in model/src/ routines)
2571    o adding to verification/global_ocean.90x40x15/ adjoint of
2572      vector invariant setup
2573    
2574    checkpoint51f_post
2575    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
2576    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
2577      of tracer Green's fucntions for ocean inversion project.
2578    
2579    checkpoint51f_pre
2580    o Added on-the-fly spatial interpolation capability
2581        "USE_EXF_INTERPOLATION" to pkg/exf.
2582      - This is a temporary Cartesian-grid hack until
2583        the super-duper ESMF coupler becomes available.
2584      - See verification/global_with_exf/README for usage example.
2585      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
2586        flags and modified pkg/seaice accordingly.
2587    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
2588        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
2589        non-local transport term.
2590    
2591    checkpoint51e_post
2592    o pkg/mom_vecinv:
2593      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
2594      - add time-ave diagnostic of vorticity advection.
2595    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
2596    o atmospheric geopotential: - include water vapor effect;
2597                                - use p^kappa in p* scaling.
2598    o land pkg: read initial state from files.
2599    o AIM : add stratospheric drag in the upper level
2600    
2601    checkpoint51d_post
2602    o change function ILNBLNK (=> last non-blank char.) to return zero
2603      (instead of the string length) when the string. char is empty
2604    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
2605    o modif's to restore TAMC compatibility
2606      - avoid "_d" constructs in PARAMETER declarations
2607      - avoid interrupting lines by comment lines
2608    o Use cluster local disks for purely local I/O
2609      vs. globally visible disks needed for ctrl stuff
2610      (merged from ecco-branch)
2611      - new active_file_loc... and mdsio_..._loc routines
2612      - affected packages: autodiff, ctrl, grdchk, mdsio
2613    
2614    checkpoint51c_post
2615    o introducing integer flag debugLevel
2616      - debLevZero: suppress all output
2617      - debLevA: standard
2618      - debLevB: equivalent to current debugMode=.TRUE.
2619    o introducing pathname variable mdsioLocalDir for mdsio
2620      that can be specified at runtime
2621      (relevant for cluster I/O to local disk)
2622    `
2623    >>>checkpoint51b_post
2624    adjoint of ptracers
2625    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
2626    o extended state in checkpoint_lev?, etc.
2627    o alternative ctrl/cost with tr1 or ptracer
2628    o new comlev1_bibj_ptracers
2629    o new ptracers.flow
2630    o made ptracers_forcing same as external_forcing_s
2631    o added verification for adjoint with ptracers
2632      - adm. grdchk fail so far
2633      - tlm. grdchk OK
2634      - checked tapelev/comlev recomputations: OK
2635    <<<checkpoint51b_pre
2636    
2637    checkpoint51a_post
2638    o added code for biogeochemistry package
2639      - new pkgs: dic, gchem
2640      - new subroutine in ptracers
2641    o modify code for biogeo packages
2642      - in model/src and pkg/ptracers
2643    
2644    checkpoint51
2645    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
2646      - autodiff, ctrl, exf, grdchk, seaice
2647      kept separate packages
2648      - cost, ecco, obcs
2649    o updating verification/internal_wave, verification/lab_sea
2650      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
2651    
2652    checkpoint50i_post
2653    o Preparing next differentiable checkpoint and sync
2654      of MAIN vs. ecco-branch
2655      - 1st step: this one is differentiable
2656      - 2nd step: next(! not this) checkpoint will have updated packages
2657                  from ecco-branch)
2658    
2659    checkpoint50h_post
2660    o new package "land": provide surface BC for AIM.
2661    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
2662    o AIM: use true log-P extrapolation for near surface temp (= as in
2663        F.Molteni paper) ; update aim.5l_cs output.
2664    o New variable in PARM03 for more flexible pickups
2665    o somewhat cleaned package initialisation sequence for
2666      ctrl/ cost/ ecco/ in packages_... routines
2667    
2668    checkpoint50g_post
2669    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
2670      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
2671      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
2672        made the default because of faster convergence than ADI
2673    
2674    checkpoint50f_post
2675    o exf totally restructured
2676      - replaced all exf_set_ routines by one generic exf_set_gen.F
2677        and made sure it's still differentiable
2678      - split exf_getffields.F into new exf_bulkformulae.F
2679      - exf_inscal_/exf_outscal_ suffixes consistent with field names
2680      - updated adjoint/makefile and relevant verif. accordingly
2681    
2682    checkpoint50f_pre
2683     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
2684          + change Evap over land. (update aim.5l_cs output)
2685     o added missing .cvsignores and made uniform across expts
2686     o changed configuration of tidal_basin_2d expt
2687     o added pkg/debug functions for tracing code in fatal crashes
2688     o tidied pkg/monitor to use MONITOR_OPTIONS.h
2689     o new fn in pkg/monitor to stop model if solution grows too big
2690     o removed lots of single quotes from comments
2691    
2692    checkpoint50e_post
2693    o make KPP work with PTRACERS
2694     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
2695       nearly a copy of kpp_transport_s
2696     - there is no analogue to SurfaceTendencyS, so I have to use
2697       gPtr(of the surface layer) instead
2698    o add a new platform SunFire+mpi (SunFire 15000) to genmake
2699    checkpoint50e_pre
2700    
2701    checkpoint50d_post
2702    o change kpp output from multiple-record state files to single-record state
2703      files analogous to write_state.F
2704    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
2705      analogous to the cg2d-related output.
2706    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
2707      so that writing to internal file fn (with length 512) fails.
2708    checkpoint50d_pre
2709    
2710    checkpoint50c_post
2711    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
2712    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
2713    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
2714    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
2715    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
2716    
2717    checkpoint50c_pre
2718    Merging from release1_p13:
2719    o bug fix for pkg/seaice dynamic solver
2720    o Added SEAICE_initialHEFF to pkg/seaice
2721    
2722    checkpoint50b_post
2723    o store u*,v* in gU,V instead of in guNm1,gvNm1
2724    o in order to put the momForcing out of the Adams-Bashforth:
2725      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
2726      to timestep.F
2727    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
2728    o re-generate output for highly sensitive test-exp:
2729       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
2730    
2731    checkpoint50b_pre
2732    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
2733    o corrected CPP option mismatch in exf_Bulk... functions for case
2734      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
2735    
2736    checkpoint50a_post
2737    o Bug fix for merging between c50 and KPP.
2738      ikey was passed from thermodynamics to kpp_calc via
2739      common block rather than being recomputed in kpp_calc,
2740      in contradiction with new key itdkey.
2741      New key ikppkey created, and tamc.h headers updated.
2742    
2743    checkpoint50
2744    - 2nd step of merge with ecco-branch:
2745      merge changes in ecco-branch back into main trunk
2746    - bug fix in find_alpha
2747    - more storing in gmredi_calc_tensor.F, kpp_routines.F
2748    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
2749    - merged some sliced AD support routines
2750    
2751    checkpoint49
2752    merged from ecco-branch:
2753    o exf:
2754      - Enable initialisation of forcing fields to constant
2755        (runtime) values.
2756      - in exf_getffields.F
2757        Reduce i-/j-loop to interior domain, discarding overlaps.
2758        That also fixes wrong TAF-key computations for key_1, key_2
2759        with bulf formulae.
2760      - exf_init.F modify #ifdef for exf_init_evap
2761      - exf_getffieldrec.F, ctrl_getrec.F
2762        The following INT-usages are not safe:
2763          fldsecs  = int(fldsecs/fldperiod)*fldperiod
2764          fldcount = int(fldsecs/fldperiod) + 1
2765        and were modified.
2766    o autodiff: checkpoint_lev...
2767      - updated storing for bulk formulae (some arrays were missing)
2768      - added state for seaice package
2769      - synchronized with main branch
2770    o DIVA:
2771      Modif.s in
2772      - the_main_loop.F
2773      - the_model_main.F
2774      and added cost_final_restore.F cost_final_store.F
2775      o With these changes, it is possible to fully separate
2776        the first forward run to compute the cost function (mdthe_main_loop)
2777        and adjoint runs over individual DIVA intervals (adthe_main_loop)
2778        into separate model executions.
2779        This enables better tuning of DIVA to given queue sizes.
2780      o Loss of cost function value in consecutive DIVA runs is
2781        fixed by storing to 'costfinal' file.
2782      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
2783        beginning/end of adjoint integration is accounted for.
2784      The current changes apply to TAF-1.4.26.
2785      TAF has one remaining bug, requiring one manual change
2786      (see MITgcm manual).
2787    o cal: synchronized between MAIN and ecco-branch
2788    
2789    checkpoint48i_post
2790    o Changes to restore differentiability of code w.r.t. previous tag
2791      (mostly adding new routines to make list and replacing
2792      pressure by totPhiHyd).
2793    o Updated and merged grdchk package
2794      - has both ADM and TLM checks
2795      - works for single- and multi-proc.
2796      - output cleaned
2797      - worked successfully for parallel DIVA
2798    o genmake:
2799      - Adding -platform=SP4
2800      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
2801    o Modif. for DIVA:
2802      ctrl_unpack should not be called in intermediate DIVA interval.
2803      (similar thing would apply for active files such as
2804      tbar, sbar, psbar, which should not be reinitialised;
2805      only relevant for ecco-branch)
2806    
2807    checkpoint48h_post
2808    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
2809    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
2810    o Added SEAICE_initialHEFF to pkg/seaice
2811    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
2812    
2813    checkpoint48g_post
2814    --- EOS:
2815    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
2816      store total Potential in totPhyHyd for diagnostics & EOS.
2817    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
2818    --- Pressure/geopotential gradient:
2819    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
2820    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
2821      ( changes results of global_ocean_pressure )
2822    o NLFS + z-coord.: add eta*Rho' contribution.
2823    o accurate phiHyd when using interface-W at the middle between 2 centers
2824     ( changes results of ideal_2D_oce )
2825    o includes r* 2nd term in potential gradient.
2826    
2827    checkpoint48f_post
2828    Merging from release1_p12:
2829    o Modifications for using pkg/exf with pkg/seaice
2830      - improved description of the various forcing configurations
2831      - added basic radiation bulk formulae to pkg/exf
2832      - units/sign fix for evap computation in exf_getffields.F
2833      - updated verification/global_with_exf/results/output.txt
2834    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
2835      (SBO) core products, including oceanic mass, center-of-mass,
2836      angular, and bottom pressure (see pkg/sbo/README.sbo).
2837    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
2838      to avoid negative values in shallow regions.
2839      - updated verification/natl_box/results/output.txt
2840      - updated verification/lab_sea/results/output.txt
2841    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
2842    o Added useSingleCpuIO option (see PARAMS.h).
2843    o Updated useSingleCpuIO option in mdsio_writefield.F to
2844      work with multi-field files, e.g., for single-file pickup.
2845    o pkg/seaice:
2846      - bug fix in growth.F: QNET for no shortwave case
2847      - added HeffFile for specifying initial sea-ice thickness
2848      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
2849    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
2850      kpp_transport_t.F, forward_step.F, and the_main_loop.F
2851    o pkg/seaice:
2852      - adjoint-friendly modifications
2853      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
2854    
2855    checkpoint48e_post
2856    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
2857    o dynamics: change definition of computational domain & adapt mom_fluxform
2858      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
2859    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
2860        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
2861        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
2862        global_ocean.90x40x15 global_with_exf global_ocean_pressure
2863        inverted_barometer solid-body.cs-32x32x1
2864      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
2865    
2866    checkpoint48d_post
2867    o in preparation for r*:
2868     a) use pre-computed gradient of hydrostatic potential:
2869        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
2870     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
2871        => affects results of glob_oce_pressure (different truncation error)  
2872      update output.txt of ideal_2D_oce & global_ocean_pressure
2873    
2874    checkpoint48d_pre
2875    o in preparation for r*:
2876      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
2877      pass the 2 comp. of the grad. as arguments to momentum S/R.
2878      but for the moment, only used if it does not change the results.
2879    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
2880    
2881    checkpoint48c_post
2882    Modifications in treatment of initial flux forcing controls
2883    to avoid extra storing of flux fields.
2884    
2885    checkpoint48c_pre
2886    o Added tidal_basin_2d experiment (currently 1D!)
2887    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
2888    
2889    checkpoint48b_post
2890    o r* coordinate added in #ifdef NONLIN_FRSURF block.
2891     (modification to pressure gradient not yet implemented)
2892    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
2893      (for U & V) that are used for vertical advection of momentum.
2894    
2895    checkpoint48a_post
2896    o In preparation for r*, use temp. array to compute vertical transport
2897       in flux-form momentum pkg. => change results of few test-exp.
2898      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
2899                        lab_sea, natl_box & plume_on_slope
2900    
2901    checkpoint48
2902    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
2903    
2904    checkpoint47j_post
2905    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
2906    o moved adexch from forward_step to addummy_in_stepping
2907    o added exch in ctrl_map_...
2908    o aveFreq.=0. at end of cost_final to avoid overwrite in
2909      reverse checkpointing loop
2910    o Yet more changes in gmredi:
2911      * adgmredi_calc_tensor
2912        avoiding all recomputation of gmredi_slope_limit
2913      * adgmredi_x/y/rtransport
2914        added flag for excessive storing to avoid recomp. of
2915        u/v/rtans, dTdx/y/z
2916        -> this is not really necessary and very memory-consuming
2917      * adgmredi_slope_psi:
2918        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
2919      * gmredi_slope_limit
2920        re-activated full calculation of taperfct for case 'ac02'
2921    o updating verification/ adjoints of carbon, global_ocean.90x40x15
2922    
2923    checkpoint47i_post
2924    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
2925    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
2926      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
2927    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
2928    o gmredi: fix few bugs.
2929    
2930    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
2931    This will be a good checkpoint to plug into the ecco-branch.
2932    o few modif.'s to get latest version adjointed
2933      (mainly kick out code in ini_linear_phisurf)
2934    o modif's to run adjoint with exactConserv
2935    o case GM_BOLUS_ADVEC should be cleaned
2936      S/R gmredi_slope_psi should be cleaned
2937    o verification/carbon now has exactConserv=.TRUE.
2938    
2939    checkpoint47g_post
2940    o time-average AIM output: becomes independent from statvars time-average
2941      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
2942    o After TAF bug fix:
2943      Tested adjoint of gmredi package.
2944      Tests were done with checkpoint47 rather than with latest
2945      checkpoint47f_post since the latter is broken for the adjoint
2946      verification/carbon/ contains both ADM and TLM gradient checks.
2947    Here they are, before they get changed/lost/stolen.
2948    Mostly modif.'s to fix numerical sensitivities.
2949    Gradient checks OK for
2950    - GM_taper_scheme:
2951      * clipping
2952      * ac02
2953      * linear
2954      * glw91
2955      * dm95
2956      * ldd97
2957    - GMREDI_OPTIONS:
2958      * GM_VISBECK_VARIABLE_K
2959      * GM_NON_UNITY_DIAGONAL
2960      * GM_EXTRA_DIAGONAL
2961      * GM_BOLUS_ADVEC
2962    in conjunction with data.gmredi parameters to be checked in
2963    in a few minutes under verification/carbon/code/
2964    
2965    checkpoint47f_post
2966    Merging from release1_p10:
2967    o modifications for using pkg/exf with pkg/seaice
2968      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
2969        and SEAICE_EXTERNAL_FLUXES
2970      - pkg/exf CPP options EXF_READ_EVAP and
2971        EXF_NO_BULK_COMPUTATIONS
2972      - usage examples are Experiments 8 and 9 in
2973        verification/lab_sea/README
2974      - verification/lab_sea default experiment now uses
2975        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
2976    
2977    checkpoint47e_post
2978    o created a tag prior to creating a branch
2979    
2980    checkpoint47d_post
2981    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
2982      at the bottom boundary had an erroneous half slip boundary condition
2983    o added bottom drag and no slip boundary condition capabilities to
2984      oceanic pressure coordinates code
2985    o added new verification experiment global_ocean_pressure, this experiment is
2986      also described in the tutorial section of the manual
2987    checkpoint47d_pre
2988    
2989    checkpoint47c_post
2990    o Added a verification experiment for a global cubed-sphere ocean run
2991      -  verification/global_ocean.cubed32x32x30
2992      -  uses pkg/therm_seaice and pkg/bulk_forcing
2993    
2994    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
2995    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
2996      when using P-coordinate; only implemented for atmospheric config.
2997    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
2998      NOTES: requires option NONLIN_FRSURF to be "#define".
2999    o update advect_xz/results/output.txt (left from checkpoint44g_post)
3000    
3001    checkpoint47b_post
3002    Merging from release1_p9:
3003    o pkg/seaice
3004      - removed GOTO's and added taf directives
3005      - double precision constants to reduce the g77 (Linux)
3006        to F77 (SGI) differences reported in release1_p8
3007    o tools/genmake
3008      - added SGI options
3009    o verification/testscript
3010      - updated to that of checkpoint47a_post
3011    o verification/global_ocean.90x40x15/input/eedata
3012      - modified for SGI f77 compatibility
3013    o verification/lab_sea
3014      - added description of sea-ice model
3015      - added missing matlab routines
3016      - added test of thermodynamics parallelization
3017    
3018    checkpoint47a_post
3019    o new pkg: aim_v23
3020     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
3021       for now, keep the same surface forcing as before.
3022     - Part-Cell implemented into AIM; check that Heat & Water are conserved
3023     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
3024     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
3025    o add diagnostic of surface correction term in monitor output
3026    
3027    o bulk_force and therm_seaice
3028    - Two packages:  bulk_force (Bulk forcing)
3029      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
3030    - Earlier integration from Stephaine Dutkiewicz
3031      and Patrick Heimbach.
3032    - Two ifdef statements for compile time,
3033       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
3034    
3035    checkpoint47
3036    differentiable version of checkpoint46n_post
3037    o bug fix in quasihydrostaticterms
3038    o * "clean" adjoint code (in terms of extensive recomputations)
3039        can now be obtained for all GMREDI options (i.e. for
3040        - GM_VISBECK_VARIABLE_K
3041        - GM_NON_UNITY_DIAGONAL
3042        - GM_EXTRA_DIAGONAL
3043        - GM_BOLUS_ADVEC )
3044      * However, wrong gradient check problem remains unsolved.
3045      * New CPP options have been introduced for different
3046        tapering schemes
3047    o external_fields_load now part of differentiation list
3048    o pressure needs multiple storing;
3049      would be nice to have store_pressure at beginning or
3050      end of forward_step, e.g. by having phiHyd global (5-dim.)
3051      (NB: pressure is needed for certain cases in find_rho,
3052      which is also invoked through convective_adjustment).
3053    o recomputations in find_rho for cases
3054     'JMD95'/'UNESCO' or 'MDJWF' are OK.
3055    o #define ATMOSPHERIC_LOADING should be differentiable
3056    o ini_forcing shifted to begining of initialise_varia
3057    o Incorporating QNVS line search routines into MITgcm
3058      (this is separate code, and therefore not under pkg)
3059      lsopt/, optim/
3060    o Updated verification/carbon/
3061      - #define GM_VISBECK_VARIABLE_K
3062      - GM_taper_scheme    = 'ldd97'    
3063    
3064    checkpoint46n_post
3065    Merging from release1_p8:
3066    o verification/natl_box:
3067      updating new external_fields_load routine
3068    o New package: pkg/seaice
3069      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
3070      The sea-ice code is based on Hibler (1979-1980).
3071      Two sea-ice dynamic solvers, ADI and LSR, are included.
3072      In addition to computing prognostic sea-ice variables and diagnosing
3073      the forcing/external data fields that drive the ocean model,
3074      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
3075      The implied surface heat flux is then stored in variable
3076      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
3077      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
3078      non-local transport term.  Because this call precedes model
3079      thermodynamics, temperature under sea-ice may not be "exactly" at
3080      the freezing point by the time theta is dumped or time-averaged.
3081      N.B.: fairly large differences in accuracy occur across
3082            different platforms/compilers; comparison between
3083            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
3084            generated output gives:
3085       T           S           U           V
3086      C D M    c        m  s        m  s        m  s        m  s
3087      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
3088      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
3089      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
3090    
3091      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
3092    o GAD:
3093      - generated new common blocks to account for call of
3094        same gad routines with differing traceridentities
3095        (needed to modify tracerIdentity indices in GAD.h)
3096      - generated separate common blocks for case useCubedSphereExchange
3097        (Department of Futurology)
3098      - parameter lists to gmredi_?transport: added tracerIdentity
3099      - added new key indices to tamc.h
3100    o external_fields_load:
3101      - added this routine to TAF list
3102      - needed to make some common blocks global and additional storing
3103        along the same lines as exf package (checkpoint_lev?_directives.h)
3104    o exf:
3105      updated external forcing package
3106      - bug fixes carried over from ecco-branch
3107        (missing OBCS_OPTIONS.h in two routines)
3108      - enable easy to use "no forcing".
3109      - added exf I/O for atmospheric loading
3110      - added exf I/O for runoff data
3111      - transfered scaling between exf <-> MITgcm to exf namelist
3112    o Adding new verification experiment global_with_exf.
3113      This verification experiment is almost identical to the
3114      global_ocean.90x40x15 experiment, except that it uses
3115      the exf (and cal) package instead of the
3116      external_fields_load routine (cf README file).
3117    
3118    checkpoint46m_post
3119    o modified testscript to return -- when there are no lines of "%MON" output
3120    o added new flag "quasiHydrostatic" for QH mode
3121      and new routine quasihydrostaticterms()
3122    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
3123      New routine: mom_u_coriolis_nh()
3124    o fixed sign of non-hydrostatic metric terms in u and v equations.
3125      Depend on correct sign of gravitySign.
3126    o added work.pc* to .cvsignore in aim directories using ifc
3127    o introduced flag for controllin non-hydrostatic metric terms
3128    o removed gravitySign from PARM04
3129    o switched to g77/ifc from pgf77 in aim experiments
3130    
3131    checkpoint46l_post
3132    o made convective adjustment work with pressure coordinates:
3133     - changed the direction of k-loop in convective_adjustment.F for the
3134       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
3135     - adjusted the reference pressure k-index in convective_adjustment.F
3136     - adjusted the convection condition in convect.F (in analogy to
3137       calc_ivdc.F)
3138     - convective_adjustment no longer computes anything on the halos
3139     - removed the warnings about negative salinity from find_rho.F and
3140       find_alpha.F; instead the new routine look_for_neg_salinity, called
3141       at the beginning of find_rho, find_alpha, and find_beta, does a
3142       check of the entire slice, if CPP-option
3143       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
3144    checkpoint46l_pre
3145    
3146    checkpoint46k_post
3147    o fixed the verification/global_ocean.90x40x15 experiment:
3148     - new bathymetry (the world according to A., JMC, and M.)
3149     - new initial fields and forcing fields (*.bin files)
3150     - new POLY3.COEFFS (for the next release one should switch to a full
3151       equation of state: JMD95P or MDJWF)
3152     - fixed several errors and redundancies in the data file
3153     - experiment uses looped cells
3154     - added matlab directory with diagnostic scripts for plotting of output
3155    
3156    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
3157     - read AIM physics parameters from a file (data.aimphys)
3158     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
3159    
3160    checkpoint46j_post
3161    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
3162    o move wVel computation at the end of the time step, in S/R integr_continuity
3163    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
3164    o update timeave pkg for wVel diagnostic.
3165    checkpoint46j_pre
3166    
3167    checkpoint46i_post
3168    o Clean up AIM package (and keep the results unchanged):
3169      include CPP_OPTION and use IMPLICT NONE in all routines ;
3170      declare all the variables _RL ; use _d 0 for all numerical constants.
3171      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
3172    
3173    checkpoint46h_post
3174    o cleaned up the use of rhoNil and rhoConst.
3175      - rhoNil should only appear in the LINEAR equation of state, everywhere
3176        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
3177        and the dynamical equations are all divided by rhoConst
3178    o introduced new parameter rhoConstFresh, a reference density of fresh
3179      water, to remove the fresh water flux's dependence on rhoNil. The default
3180      value is 999.8 kg/m^3
3181    o cleanup up external_forcing.F and external_forcing_surf.F
3182      - can now be used by both OCEANIC and OCEANICP
3183    checkpoint46h_pre
3184    
3185     Added code to convert surface volume flux (fresh water) into
3186     a mass flux when using P coordinates in the ocean (OCEANICP).
3187     Note: It assumes you have set rho0=rhoConst=density of fresh water.
3188    
3189    checkpoint46g_post
3190    o Include a new diagnostic variable phiHydLow for the ocean model
3191      - in z-coordinates, it is the bottom pressure anomaly
3192      - in p-coordinates, it is the sea surface elevation
3193      - in both cases, these variable have global drift, reflecting the mass
3194        drift in z-coordinates and the volume drift in p-coordinates
3195      - included time averaging for phiHydLow, be aware of the drift!
3196    o depth-dependent computation of Bo_surf for pressure coordinates
3197      in the ocean (buoyancyRelation='OCEANICP')
3198      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
3199        Theta, Salinity, and Pressure in the parameter list. This routine is
3200        presently contained in find_rho.F. This routine does not give the
3201        correct density for 'POLY3', which would be a z-dependent reference
3202        density.
3203    o cleaned up find_rho
3204      - removed obsolete 'eqn' from the parameter list.
3205    o added two new verification experiments: gop and goz
3206      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
3207    checkpoint46g_pre
3208    
3209    checkpoint46f_post
3210    o Enable tangent linear (forward mode) gradient checks:
3211      - extended active file handling to g_... files
3212      - added TANGENT_SIMULATION to theSimulationMode
3213      - extended grdchk package accordingly
3214    o added tangent linear setup in verification/carbon/code_ftl
3215    o added adjoint setup in verification/front_relax/code_ad
3216    
3217    checkpoint46e_post
3218    o Added new equation of state -> MDJWF
3219      - EOS of McDougall et al., 2002, JAOT, submitted
3220      - caveat: the equation of state is only valid for a smaller (more
3221        realistic?) range of values than JMD95P/Z and UNESCO
3222      - added masks to the calculation of pressure in store_pressure
3223      - added more check values for density in check_eos (ini_eos.F), some of
3224        the old check values are out of the range of the MDJWF-eos, so don't
3225        expect perfect matches for those
3226    checkpoint46e_pre
3227    
3228  checkpoint46d_post  checkpoint46d_post
3229  o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and  o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
3230    'OCEANICP', also initialised field pressure correctly in ini_eos in the    'OCEANICP', also initialised field pressure correctly in ini_eos in the
# Line 26  checkpoint46c_pre Line 3248  checkpoint46c_pre
3248    
3249  checkpoint46b_post  checkpoint46b_post
3250  o Added new equation of state -> JMD95Z and JMD95P  o Added new equation of state -> JMD95Z and JMD95P
3251    - EOS of Jackett and McDougall, 1995, JPO    - EOS of Jackett and McDougall, 1995, JAOT
3252    - moved all EOS parameters into EOS.h    - moved all EOS parameters into EOS.h
3253    - new routines ini_eos.F, store_pressure.F    - new routines ini_eos.F, store_pressure.F
3254  o Added UNESCO EOS, but not recommended because it requires  o Added UNESCO EOS, but not recommended because it requires

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