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revision 1.8 by adcroft, Wed Jul 1 22:49:29 1998 UTC revision 1.924 by dimitri, Fri Dec 14 21:52:01 2007 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/seaice:
8      - add timescale for melting due to warm mixed layer as a means of
9        setting SEAICE_availHeatFrac more conveniently
10      - add a CPP-flag/runtime parameter check for flooding algorithm
11      - reformulated availHeat in seaice_growth.F to be independent of AREA
12    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
13      unit changes
14    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
15    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
16      SX vector computer.
17    o pkg/seaice:
18      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
19        seaice forcing fields can now be read only through pkg/exf
20      - removed some unused halos
21    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
22    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
23      or U/VICE from U/VWIND before computing U/VSTRESS
24    
25    checkpoint59k
26    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
27      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
28    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
29      all experiments pass when compile with un-initilised var. checking option.
30    o added pkg/salt_plume
31    o script to test restart (for now, in MITgcm_contrib/jmc_script)
32    o pkg/seaice: new read/write pickup version.
33      read meta file and write only fields which are needed to restart.
34      ( same logic as main pickup file ; also using pickupStrictlyMatch )
35    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
36    o lab_sea.hb87: modify the domain & update output.hb87.txt :
37      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
38      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
39      process. Fixed here by closing the domain at the Northern boundary.
40    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
41    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
42      a set of consecutive levels in/from a 3-D array.
43    o pkg/ptracers:
44      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
45      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
46    
47    checkpoint59j
48    o in pkgs: dic, obcs, offline, rbcs:
49      standard way to compute coeff. for time interpolation between 2 time reccords
50      which retains full precision (& make results less dependent on compiler).
51      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
52    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
53      packages instead of reading ice cover and wind speed separately
54    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
55     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
56      to allow to compile customized code before the update)
57    o cleaning-up:
58      - fix CPP instruction syntax in pkg/obcs
59      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
60        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
61      - fix some threads issue in IO parts.
62    o pkg/dic:
63      - add tons of "_d 0" (--> much better testreports !)
64       and then update outputs of tutorial_global_oce_biogeo
65    o pkg/mom_fluxform:
66      add a special version of momentum advection intended to conserve momentum
67      next to a bathymetry step or a coastline edge. (default = off = #undef)
68    o new read/write pickup version:
69      - for now, only implemented for main (mdsio) pickup file.
70      - write out only what is needed to restart; merge pickup_nh , pickup_ph
71        and main pickup together.
72      - read meta file; read only what is needed to restart; stop if a field
73        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
74        if it make sense (even if the restart is not perfect).
75      - if no meta file, assume that pickup to read corresponds exactly to
76        a pickup that would currently be written.
77      - read pickup written in the old format (until checkpoint59i) if it
78        recognizes an old meta file (no field-list).
79      - add a meta file in exp. which starts from a pickup: 2 cases:
80        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
81         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
82        b) a meta file describing the content of the associated pickup file
83         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
84    o pkg/mdsio & pkg/rw:
85      - new routine to read a meta file ; new set of routine to read
86        Multiple-fields file (with meta file).
87    o added open boundary conditions capability for seaice
88        HSNOW, HSALT, UICE, and VICE
89    
90    checkpoint59i
91    o adjoint:
92      * fix multiDimAdvection adjoint
93        (partial recomputation problem by TAF for fVerT(:,:,kDown)
94        and comlev1 size definition (maxpass vs. max. number of tracers)
95      * verification/global_ocean.90x45x15 adjoint now tests
96        NLFS and multiDimAdvection using DST3 (=30)
97      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
98    o pkg/kpp: add "_d 0" to real constant (if missing);
99      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
100      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
101    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
102      for internal parameters related to restart process (formerly from PARAMS.h)
103      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
104    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
105      as argument. (only atm2d & obcs write_pickup have not yet been updated)
106    o pkg/monitor:
107      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
108      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
109      - account for deep Atmosphere factor and density factor (anelastic)
110    o added open boundary conditions capability for seaice HEFF and AREA
111    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
112      thermodynamics
113      - requires a little reorganization, which affects the testreport results
114        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
115        so that now the conservative form is tested
116      - add a few comments
117    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
118    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
119    o add new diagnostics to seaice: advective, diffusive fluxes (only for
120      multidim-advection, for scheme 2 they are not filled) and transports,
121      thermodynamic growth rates
122    o change units of EmPmR (inside the code, + within coupling interface)
123      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
124      Affects results @ truncation level (cg2d match) and update output of
125       experiments: lab_sea(6), global_ocean.90x40x15(10),
126      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
127      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
128      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
129      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
130    
131    checkpoint59h
132    o pkg/exf:
133      - improve vectorization by moving if-statement out of loops in
134        exf_mapfields, exf_radiation
135      - exf_bulkformulae.F: introduce 2D fields and vectorize code
136    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
137    o testreport:
138      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
139        monitor & update offline_exf_seaice exp. output.
140      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
141    o pkg/seaice:
142      - bug fix in the evp solver: boundary conditions were affected be
143        masking of zMax/zMin (changes results)
144      - minor bug fix in boundary conditions in seaice_calc_strainrates
145        (changes results for no_slip)
146      - seaice_lsr.F: make interpolation of eta dependent on boundaries
147      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
148      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
149        stress formulation and no-slip boundary conditions
150    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
151      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
152    o pkg/seaice: a first HSALT time stepping equation has been checked in
153    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
154      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
155      without requiring DO-IF statements
156    o pkg/thsice:
157      use continuous power-law function for partition of energy between lateral
158      melting/freezing and thinning/thickening ; old code using step function
159      still available with #undef THSICE_FRACEN_POWERLAW
160      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
161    o testreport: change AD testing : check against results/output_adm.txt
162      using same scripts as for forward test.
163    
164    checkpoint59g
165    o adjoint testing: in preparation for changing testreport:
166      - output format: cost and grad written on separated lines
167      - ad output results in directory "results" (instead of "results_ad")
168    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
169    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
170    o pkg/ecco: allow user defined cost function contributions
171    o testreport:
172      Allow to choose (per experiment) the list of tested output variables
173       and the main variable (used to issue a pass/FAIL ) ;
174      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
175      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
176      Also modify printing of summary:
177       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
178       b) echo the list of tested variables in the individual summary.txt of
179          each experiment.
180    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
181      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
182      (but still depend on the tile decompostion of the domain).
183    o pkg/seaice: change a discretization detail to make the B-grid code
184      "more symmetric". This change is likely to remove all "ridges/leads" that
185      where quasi-aligned with the grid in B-grid solutions. It may also be
186      the solution to the stress coupling issues with the B-grid.
187    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
188      remove .cvsignore from input dir. (since testreport no longer run here).
189    o pkg/thsice:
190     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
191     - fix reshaping of sea-ice just after advection:
192       melt all the ice only if ice-volume is too small.
193     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
194       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
195     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
196    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
197      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
198    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
199      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
200      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
201      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
202      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
203      -> update output.txt
204    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
205     this affects truncation error: -> update output.txt of exp:
206      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
207      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
208    
209    checkpoint59f
210    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
211    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
212      a bounded range (in forward mode)
213    o pkg/ecco, ctrl, autodiff and mom_common:
214     internal parameter controls, completements of implementations
215    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
216    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
217      (not seem any difference in testing results).
218    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
219       at face corners.
220    o pkg/generic_advdiff:
221     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
222      loop range indices for computing vertical advection tendency
223      and do the calculation in the interior only (no overlap) ;
224      for now, only implemented for SOM advection (to save CPU time).
225     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
226    o exch2 adjoint
227      First set of changes:
228      - add exch2 hand-written adjoint templates
229      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
230        This will require cleanup in pkg/autodiff/*.F
231        (changed routines currently kept separate in verif. code/)
232      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
233        that used to hide exch2 or cubed-sphere specific code
234        (commented via 'cph-exch2')
235    o pkg/seaice
236      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
237    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
238       output of global_ocean.cs32x15.thsice .
239    
240    checkpoint59e
241    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
242      for B-grid vector (not yet tested) and C-grid vector (<- only used
243      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
244    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
245      (#ifdef ALLOW_SALT_PLUME)
246    o gather_2d/scatter_2d: removed halo regions
247    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
248      scheme and the corresponding test case (under front_relax dir). For now,
249      only available with Skew-flux form and not yet tested in realistic set-up.
250      adjoint: store directives updated, but gradient checks deteriorated,
251      so maybe GM/Redi adjoint is now broken.
252    o seaice adjoint
253      * add AREA, HEFF, HSNOW as control variable
254        (should not change lab_sea results)
255      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
256    o pkg/seaice:
257      * added computation of saltFlux in seaice_growth;
258        For time being, sea ice salinity is assumed constant
259        contribution of snow flooding to freshening of sea ice is neglected.
260        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
261        defaults to 0.0 in order to maintain backward compatibility.
262        Typical values for SEAICE_salinity are 4 to 10 g/kg.
263      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
264      * added SEAICE_availHeatFrac, which specifies fraction of surface level
265        heat content used to melt or grow ice
266      * commented out cap of HICE: it helps keep ice thinner
267      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
268      * applied OBCS T/S mask to HEFFM sea ice mask
269    
270    checkpoint59d
271    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
272     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
273     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
274    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
275     and change default value of parameter "GM_Small_Number";
276     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
277       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
278       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
279    o pkg/ecco: cost function when applying pkg/smooth to controls
280    o pkg/ctrl: add forcingPrecond run time parameter
281    o pkg/seaice:
282     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
283     - fix bug in metric terms of u-equation in LSR solver (implicit part),
284       changes verification/lab_sea
285     - rearrange implicit part of u-equation in LSR solver to make it easier to
286       read, understand, and debug. This causes changes at the truncation level.
287     - fix (serious) bug in the boundary conditions (sign error in the implicit
288       part) of the LSR solver. Changes all LSR results.
289     - fixed problem with HSNOW initialization to avoid thick snow when AREA
290       is initilized with small values - does not change lab_sea results.
291     - added HsnowFile initialization capability
292    o pkg/smooth: addition to model/src and pkg/ctrl so allow
293     initialization of pkg/smooth and application to control vector
294    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
295    o dependencies: pkg/profiles requires pkg/cal
296    o pkg/profiles:
297     - added option ALLOW_PROFILES_GENERICGRID
298         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
299         that interpolation information (grid points and coefficients) is provided
300         within the netcdf input files.
301         -> sample matlab scripts can be found in MITgcm_contrib/gael
302         that allow you to prepare netcdf input files.
303     - also modified: cleaner include statements, cleaner error print statements,
304       cleaner stops when error, and more tests of the netcdf input files consistency.
305    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
306    o pkg/seaice:
307     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
308       requires a new routine: seaice_diagnostics_fill.F
309     - make sure that seaice does not move if not forced (pressure replacement
310       method, Hibler and Ip, 1995), changes results
311     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
312     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
313       It is turned off by default (=-1.), because it changes the results.
314     - make it possible to read AREA from a file, too.
315    
316    checkpoint59c
317    o add S/R and diagnostics for oceanic mixed-layer depth
318    o move GMRedi call after all vertical mixing schemes (including KPP)
319    o pkg/thsice:
320     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
321      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
322    o pkg/obcs:
323     - bug fix for balance code
324    o pkg/seaice:
325      - allow values of SEAICE_elasticParm > 1
326      - add new parameter SEAICE_evpTauRelax as an alternative
327        to SEAICE_elasticParm
328      - make lsr boundary conditions free slip (by default), changes result
329      - add code for no slip boundary conditions for lsr
330      - set minimum of zeta to zero (and not 4e8) (changes results)
331      - add a cap on AREA after advecting AREA if seaice_growth is not called
332    o change calculation of Visbeck K:
333      - no longer depend on tapering scheme; instead, compute slope (limited
334        by GM_maxSlope). this is equivalent to what was comuted before with
335        clipping or linear tappering.
336      - fix vertical averaging (wrong by 1/2 level)
337      - leave the old version (but will not be maintained) within
338        #ifdef OLD_VISBECK_CALC / #endif
339      - update output of exp. ideal_2D_oce
340    o change error catch in calc_r_star to improve vectorization
341    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
342      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
343    o adjoint:
344      Re-organized adjoint checkpointing according to Matt Mazloff
345      (but with modifs/completions/cleanups)
346      Storing is now bundled into large arrays to optimized I/O
347      (and second step in cleanup of the_main_loop)
348    
349    checkpoint59b
350    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
351      - export/import (between ocean & coupler) fields needed for ocean DIC.
352    o pkg/seaice:
353      - get rid of three more exchanges seaice_calc_viscosities (required
354        different loop boundaries in seaice_lsr and seaice_ocean_stress)
355      - bug fix in seaice_ocean_stress (update of lab_sea required)
356      - reduce loop boundaries to necessary minimum also in seaice_evp
357      - go back to the old way of computing deltaC/Z as the adjoint likes that
358        better
359    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
360      passive tracer to an Age Tracer) + update output.txt
361    o pkg/exf:
362      - implement A-grid / C-grid selection for wind-stress input files.
363      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
364      for now, in exf_bulk_largeyeager04.F only :
365      - change implementation for case where windspeed + 2. components wind-stress
366        are read-in. AND use rhoConstFresh to convert evap.
367    o pkg/seaice:
368      - use correct EXCH_UV for wind-forcing (on A-grid).
369      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
370        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
371    o pkg/exf:
372      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
373      EXF_INTERPOLATION:
374      - merge global_with_exf/code version of exf_interp_read.F
375        to the main code ;
376      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
377        reading the file ; Important: This options needs to be defined to recover
378        previous code.
379        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
380      - no longer loose real*8 precision along the way when using exf_iprec=64.
381    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
382      - change discretisation of evp-solver in order to avoid another exchange
383        (changes lab_sea) and clean up a little
384      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
385        help the adjoint (this also changes the results slightly)
386      - add a few "_d 0" where they had been missing in seaice_evp.F
387      - cleaning up: remove unused seaice_calc_rhs.F
388    o pkg/exf: some cleaning-up:
389      - change various "constants" into runtime parameters
390      - cleaned-up Large&Yeager04 routine which should eventually
391        replace exf_bulkformulae.F (changed names of S/R and CPP)
392        and merged various ALLOW_ATM_WIND options
393     only used with thsice pkg (in thsice_get_exf.F):
394      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
395        which are used when useStabilityFct_overIce=TRUE (= the default)
396      - change default values of ice & snow emissivity and scale downward LW
397        by ice & snow emissivity.
398    o pkg/thsice:
399     fix few little problems, in thsice_calc_thickn.F:
400      - growth vertically (and not laterally) if iceFrac == iceMaskMax
401      - melt only laterally if hIce < hThinIce (as the comments say)
402      and in thsice_extend.F:
403      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
404      - start to form ice as soon as the minimum ice-volume is reachable.
405     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
406      and cpl_aim+ocn
407    o pkg/kpp
408     - move computation of surface related input fields to KPP into a new
409       subroutine kpp_forcing_surf.F
410     - remove wrong (within bi,bj loops) EXCH calls.
411     - little cleaning (add argument myThid in last position, cvs header ...)
412     - for now, fix conservation problem by exchanging KPPviscAz (may not
413       be the best fix)
414    o pkg/seaice
415     - check for inconsistent evp parameter/cpp-flag combination
416     - remove leftover errIO flat for obsolete name list error handling
417    o OpenAD
418     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
419    
420    checkpoint59a
421    o pkg/seaice: some parameter clarifications and a little bit of clean up
422    o pkg/thsice: rename run-time parameters:
423       himin       -> hIceMin
424       himin0      -> hThinIce
425       hihig       -> hThickIce
426       i0          -> i0swFrac
427       transCoef   -> bMeltCoef
428       frac_energy -> fracMelting
429      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
430       with default values (for now) that do not change the results.
431      remove old version of thsice vars advection in pkg/seaice.
432    o in FFIELDS.h:
433      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
434      - make pLoad & sIceLoad always available (but still only used if
435         ATMOSPHERIC_LOADING is #define).
436    o pkg/kpp: replaced _KPP_RL with _RL
437    o bug fixes for vertical diffusivity computations when both KPP and
438        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
439        are no longer updating the vertical diffusivity array
440        (passed as argument) but are (re-) setting those arrays.
441    o pkg/seaice: fix bug in evp solver, while doing that
442      - change (improve?) discretization of stress computations for both
443        cgrid-lsr and evp solver
444      - add a new routine to compute strain rates
445      - the above changes lab_sea results
446      - add no slip conditions for evp solver (off by default), lsr-version
447        may follow
448      - fix exchange for shear at Z-points (does not change lab_sea)
449      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
450        (to force the user to pick a time step since there is not "safe" way
451        of choosing it)
452      - add principal stress diagnostics
453      - rearrange fields for evp a little to avoid having to call a: too many
454        exchanges and b: exchanges for stress trensor components which we do
455        not have.
456      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
457        of evp, complete rewrite for lsr case (latter is does not yet work
458        in all cases)
459    o pkg/kpp: add code to have mixing in shelf ice caverns
460      - add myThid to all kpp routines (long overdue)
461    
462    checkpoint59
463    o pkg/exf:
464      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
465        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
466      - move exf header files from lower_case.h to UPPER_CASE.h ;
467        add missing cvs Header & Name
468      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
469      - add namelist param. selectStressGridPosition, exf_monFreq
470      - retire many _CLIM routines, and remove data.exf_clim
471        + params moved to data.exf
472        + climsst, climsss now handled by exf_set_gen, i.e.
473          climss?period=0 refers to constant field,
474          climss?period=-12 to monthly forcing
475      - split up namelists in data.exf
476    o pkg/seaice:
477      - remove seaice_exch and seaice_exch_uv
478      - remove superfluous exchange of theta
479      - add myThid to seaice_budget_ocean/ice
480      - add new interface for atmospheric wind forcing (C-grid only)
481        + new routine
482        + two new field (taux, tauy for stress over ice)
483        + removed one global field (DAIRN) for C-grid case only
484    o pkg/thsise
485      - 2nd set of modifs for thsice adjoint in conjunction with exf
486    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
487    
488    checkpoint58y_post
489    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
490      vertical diffusivity, similar to that in MOM4; turned on using
491      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
492      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
493    o Added capability for 3D specification of background vertical diffusion
494      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
495      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
496      "data" file that contains the 3D vertical diffusivity coefficients.
497    o ice dynamics (pkg/seaice) with thsice thermodynamics:
498      - add code within pkg thsice to advect & diffuse sea-ice fields
499      similar to (and will replace) what has been added in  seaice_advdiff.F,
500      but: - conserving Mass, Heat & Salt.
501           - better when using non-linear advection scheme (not yet fully tested)
502           - can also be used in atmospheric set-up (for now, only the diffusion).
503    
504    checkpoint58x_post
505    o IO option for global-file compact format:
506      - add options when generating topology (utils/exch2/matlab-topology-generator)
507      - add I/O capability (pkg/mdsio).
508      - adapt utils/matlab/rdmds.m to read this format.
509      for now long-line format not yet supported by pkg/mdsio (& exch2).
510    o shelfice: add a few diagnostics
511    
512    checkpoint58w_post
513    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
514      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
515      (and replace horiVertRatio in NH code).
516      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
517                         and tutorial_plume_on_slope (sensitive to truncation)
518    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
519      directly to drive seaice model (C-grid only)
520    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
521     - reintroduce computation of wind from stress,
522     - compute tau (in exf_bulkformulae.F) from windstress averaged to
523       mass points to avoid tau = 0
524     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
525    o rdmnc.m: make it work with "global" files created with gluemnc
526    o rdmnc.m : some improvements in dealing with singleton dimension
527      (tested on all testreport mnc output files).
528    o genmake2: disable pkg/profiles if netcdf test fails.
529    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
530    o move call to cal_readparms up to make calendar parameters/variable available
531      to all packages
532    
533    checkpoint58v_post
534    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
535      useDynP_inEos_Zc tested.
536    o pkg/exf: changes to properly interpolate/mask/scale initial fields
537    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
538      and portions thereof.  See read_cs.txt for description and examples.
539    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
540      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
541      following the great-circle arc between those 2 points.
542    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
543      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
544    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
545     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
546     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
547     - still needs work (not working with some options ; efficiency to improve)
548       and serious testing.
549     - use this scheme for temperature & salinity in 2 advection test exp.:
550       advect_xy & advect_xz, respectively.
551    
552    checkpoint58u_post
553    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
554    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
555    o testreport: add option "-skipdir" to skip some test.
556    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
557      momentum calculation.
558    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
559    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
560      remove checkpoint.F and the_correction_step.F (no longer used);
561      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
562    o add option (linFSConserveTr) to correct for tracer source/sink due to
563      Linear Free surface
564    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
565    o pkg/thsice: fix reading mnc-pickups
566    
567    checkpoint58t_post
568    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
569    o pkg/mdsio:
570     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
571       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
572       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
573     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
574     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
575       either MDS_READ_FIELD or MDS_WRITE_FIELD )
576     - new S/R (to replace MDSWRITEMETA), which allows to write more
577       informations (variable names, time ...) to meta files.
578     - modify rdmds.m to give back the meta file content.
579    o pkg/diagnostics: change vertical interpolation to be safer, and more
580       flexible (define p-levels to interpolate to in data.diagnostics);
581      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
582       diagnostic pointer.
583    o pkg/seaice: more cleaning up of seaice_growth, added many comments
584    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
585    o fix multi-category seaice:
586     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
587       SEAICE_MULTICATEGORY
588     - fix short wave heat flux
589    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
590       and allow to use EVP solver. Change forward lab_sea: test both EVP
591       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
592    o Initial check-in of lab_sea adjoint
593      (very similar to natl_box_adjoint/code_seaice)
594      * used C-grid and EVP solver
595      * used KPP, GM/Redi
596      * uses inAdExact=.TRUE.
597      * gradient checks fail for both ADM and TLM
598        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
599        f.d. gradients actually seem more problematic than ADM, TLM gradients;
600        issue is related to forward mismatch between g77 an ifort
601    o pkg/seaice: overhaul of thermodynamics
602     - growth.F and groatb.F are replaced by new routine seaice_growth.F
603     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
604     - move a few global fields out of SEAICE.h into seaice_growth.F and
605       make them 2D (FICE/QNETO/ ...)
606     - remove FO (it is the same as QNETO)
607     - introduce a few local fields to avoid modifying external fields such
608       as atemp, etc.
609    
610    checkpoint58s_post
611    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
612      changed exf_set_gen.F so that
613        genperiod=0 means input file is one time-constant field and
614        genperiod=-12 means input file contains 12 monthly means
615    o CG2D: use pre-computed solver main-diagonal (stored in common block);
616      this affects truncation error ; generate new output file for exp. which
617      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
618        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
619        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
620        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
621        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
622        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
623    o start implementation of deep-atmosphere and anelastic formulation
624    o verification: remove 2nd copy of input files and use script "prepare_run"
625      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
626    o mom_common/vecinv/fluxform: fix a few initialisation isssues
627    o profiles: fix for multithreaded case
628    
629    o diagnostics: rename few diags:
630      s/'PRESSURE'/'RCENTER '/g
631      s/'TICE    '/'oceFreez'/g
632      s/'TAUX    '/'oceTAUX '/g
633      s/'TAUY    '/'oceTAUY '/g
634      s/'SWFLUX  '/'oceQsw  '/g
635      s/DIFx/DFxE/g
636      s/DIFy/DFyE/g
637      and add few ocean-forcing diagnostics:
638      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
639    o modifications to pkg/seaice/growth.F and budget.F, which change results of
640      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
641      as actual snow thickness.  It now refers everywhere to effective snow
642      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
643    
644    checkpoint58r_post
645    o modifications to pkg/seaice/growth.F, which change results of
646      lab_sea experiment: fixes pertain to melting snow over open water, to
647      masking EVAP under sea ice, and to using the correct AREA variable for
648      computations of EVAP, PRECIP, HSNOW, and GHEFF
649    o add ability to read bathy, salt, and theta using MNC (off by def)
650    o add flooding algorithm and advection of HSNOW for pkg/seaice;
651      both are turned off by default and do no change any results
652    o seaice advection with pkg/thsice: a step toward the use of non-linear
653      advection scheme, but #ifdef or commented out for now (requires more EXCH).
654    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
655      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
656      in natl_box (affects results @ truncation level: update output.txt)
657    o multi-threading and IO:
658      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
659      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
660        (needed to work with SingleCpuIO): tested in all verif. exp.
661    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
662      affects the results (but none of the verification test uses this scheme).
663    o Adding some pkg/diagnostics capability to pkg/seaice
664      (will certainly be subject to changes)
665    o ctrl: adding new control variables:
666      lwflux, lwdown, evap, snowprecip, apressure, runoff
667    
668    checkpoint58q_post
669    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
670      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
671      high_res_cube configuration by 4% on Columbia.
672    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
673      add (in global_with_exf/code) a version of EXF_INTERP_READ without
674      dynamical allocation (seems to work in multi-threaded).
675    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
676      single CPU io) so that TAF does not have to see EESUPPORT.h
677    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
678    
679    checkpoint58p_post
680    o obcs: stop if obcs is used with useCDscheme = .true.
681    o shelfice:
682     - fix a sign error so that no slip at shelfice interface works
683     - remove stop for combination non-hydrostatic code and shelfice. That does
684       not mean, that the results are correct, but at least they are numerically
685       stable
686    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
687    o added adjoint exch routined for all exch*3d* routines
688      and updated flow directives
689    
690    checkpoint58o_post
691    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
692      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
693    o change controling S/R for writing pickup file (new S/R do_write_pickup)
694      and clean-up reading/writing of pickup files.
695    o fix local version of read/write pickup (NH part) in rotating_tank/code
696    o simplify EXCH interface:
697     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
698     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
699    o added the regrid package
700    o shelfice:
701     - add a simple boundary layer scheme to reduce noise
702     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
703    
704    checkpoint58n_post
705    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
706       local variable (not in common block).
707    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
708      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
709      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
710        to work with SingleCpuIO.
711    o add "_d 0" to real constant of pkg/cfc subroutines ;
712       update exp. cfc_exemple & tutorial_cfc_offline output files.
713    o multi-threading and IO:
714      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
715        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
716      - barrier before and after reading.
717      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
718      - avoid using MDS_WRITELOCAL for LAND pkg output.
719      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
720        common-block variables ; Allows multi-threading with master-thread IO.
721    o change default MAX_NO_THREADS from 32 to 4 ;
722      and stop cleanly when MAX_NO_THREADS is too small.
723    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
724    
725    checkpoint58m_post
726    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
727       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
728    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
729       keep global_ocean.90x40x15 (for AD testing) with former secondary test
730       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
731    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
732        add MITgcm_tutorials (= code + all the tutorials)
733    o ecco, option to compute cost for total ssh (mean+anom)
734    o consistent with addition of ptracer and ssh in pkg/profiles
735    o profiles: adding ptracer and ssh
736    o testreport: change multi-test output-file name
737      (from output.txt.{name} to output.{name}.txt)
738    o profiles: now ok for mutli-tiles case
739    o seaice: add 4 parameters for different advection schemes for area,
740      (effective) seaice thickness, enthalphy, and snow height. Their default
741      is the standard parameter SEAICEadvScheme
742    o calc_gw:
743     - add cosFacU in zonal viscous flux (harmonic.visc.).
744     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
745       of tutorial_plume_on_slope.
746    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
747    o calc_gw: true flux-form, account for horizontal grid spacing.
748      update rotating_tank results, but not plume_on_slope (affected at
749      truncation level, 11 digits).
750    
751    checkpoint58l_post
752    o calc_gw:
753     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
754     - remove side-drag for now (need to fix it); update plume_on_slope results.
755     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
756    o commit code to make SST/SSS weights spatially variable
757      (based on either variable in-situ or variable initial T/S weights)
758    o pkg/ecco:
759      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
760        now based on horizontally varying weights wthetaLev, wsaltLev
761      * cost_averagesflags now returns year indices in addition to day, month
762      * sflux balance is performed on annual basis
763        (sflxumm, sfluxmm2, bal_sfluxmm)
764      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
765        including separate counting and multipliers
766    o pkg/rbcs
767      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
768    
769    checkpoint58k_post
770    o testreport:
771     - always build in dir. "build" (if not there, mkdir build instead of building
772       & running in input)
773     - run in dir run (if it exists), in build otherwise.
774     - call prepare_run (if input/prepare_run exists)
775     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
776    o pkg/exf modifications to interpolation and rotation routines for more
777       reasonable treatment of North Pole singularity: for tracers North Pole
778       value is set to northernmost zonal-mean value, for zonal velocity it is
779       set to zero, and for meridional velocity it is set to northernmost value.
780    o pkg/exf/exf_check_range.F
781     - add tile index to diagnostics and move stop statement to the very
782       end of the routine.
783    o pkg/diagnostics: (diagnostics_main_init.F)
784      define title of isomorphic variables according to the current config.
785    o pkg/thsice with pkg/seaice dynamics:
786    - fix domain of computation (interior only, required for exf) and do exchanges
787    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
788    o towards a standard way of dealing with multi-threading in MONITOR
789      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
790    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
791       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
792    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
793    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
794    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
795       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
796    o tracer advection:
797     - clean-up and simplify calc_common_factors.F
798     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
799       advection subroutine (but still not used within DST advection S/R)
800    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
801    
802    checkpoint58j_post
803    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
804      from file (collects calls previously in FORWARD_STEP)
805    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
806    o adjoint store dir. adjusted accordingly
807    o genmake2
808      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
809    
810    checkpoint58i_post
811    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
812      on wind stress (SEAICEstressFactor defaults to 1.)
813    o Total number of Timers is finite (<=40): comment out 2 non-essential one
814      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
815    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
816      on CS-grid: no longer loosing mass.
817    o exf & curvilinear-grid: no longer modify longitude xC & xG.
818    o pkg/ggl90: fix sloppy output and fix a bug
819    o pkg/seaice: added SEAICEuseEVPpickup parameter
820      - Set to false in order to start EVP solver with
821        non-EVP pickup files when using SEAICEuseEVP
822      - fix sign error in diffusion in seaice_calc_rhs
823    
824    checkpoint58h_post
825    * Modifications for bottom topography control
826      o replace hFacC by _hFacC at various places
827      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
828      o add non-self-adjoint cg2d_nsa
829      o update autodiff support routines
830      o re-initialise hfac after ctrl_depth_ini
831      o works for 5x5 box, doesnt work for global_ocean.90x40x15
832    * Adding verification for 5x5 box (4-layer) bottom topography control
833    
834    checkpoint58g_post
835    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
836       used for mean seasonal cycle, mean diurnal cycle); add an example
837       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
838    o pkg/ggl90:
839      - add parameter (minimum surface kinetic energy)
840      - fix bug (avoiding division by zero)
841    o couple pkg/thsice to pkg/seaice:
842      - modify advection in seaice to accomodate new scalar fields to be advected
843      - only muliDimAdection scheme work with seaice/thsice
844      - mapping of thsice-variables to seaice-variables, back and forth
845      - does not break the verification experiments, but does not give the
846        desired results either
847    o pkg/seaice
848      - make (default) second order advection a bit less confusing?
849    
850    checkpoint58f_post
851    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
852      to pkg/seaice):
853      - new routines thsice_map_exf and thsice_get_exf provide the interface
854      - add an additional formal parameter to thsice_solve4temp
855    o pkg/exf:
856      - add new fields wspeed, snowprecip (to be able to couple to thsice)
857      - correct Stefan-Boltzmann constant
858      - new parameter for longwave surface emittance
859      - separate some stuff from exf_bulkformulae into new routines  
860        exf_radiation, exf_wind
861      - add new parameters and constants: longwave emissivity for ocean, ice
862        and snow, evaporation parameters over ice
863      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
864        either wind from stress or stress from wind
865    o pkg/thSIce:
866    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
867    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
868       and THSICE_CALC_THICKN
869    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
870    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
871      to make debugging easier.
872    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
873    o pkg/bulk_force:
874      - clean-up comments and parameters ;
875      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
876    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
877      generate new output for test-experiment: aim.5l_cs.thSI
878    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
879      testreport accordingly
880    
881    checkpoint58e_post
882    o SEAICE_CGRID adjoint done
883    o R_STAR adjoint implemented.
884      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
885      * need to sort out init. of h0facc, etc.
886    o Make pkg/profile fully independent of ecco,cost, etc. stuff
887      to be able to use it in pure forward.
888    
889    checkpoint58d_post
890    o upgrade simple test-experiment to tutorial example:
891     step.1: duplicate the experiment and (step.2) will remove the old copy.
892      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
893      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
894      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
895      tutorial_global_oce_biogeo    <- copy of dic_example
896      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
897      tutorial_plume_on_slope       <- copy of plume_on_slope
898      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
899      tutorial_global_oce_optim     <- empty for now (David ?)
900      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
901     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
902    o correct a sign problem in cost_scat.F
903    o obcs and ptracers: fix boundary conditions for advections schemes
904      with larger stencil
905    o thsice adjoint: start
906    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
907      completeness
908    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
909      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
910    o ptracers adjoint:
911      * avoid extensive recomputatations
912      * fix missing re-init. of gptr (missed by TAF)
913    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
914      me to turn off the excessive output to STDOUT that this package produces
915    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
916      and add those terms in Vector-Invariant formulation.
917    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
918      if the control period (xx_hfluxperiod etc) is 0
919    o in profiles pkg, clean routines and fix details
920    o in ecco pkg, reading ssh data:
921      fix problem in case the model does not start at iter0=0
922    o fix mnc-pickup/restart for ptracers
923    o new package prifiles:
924      code to compute profile-based cost by Gael Forget
925      (modifs in ecco, ctrl, autodiff)
926    o Benign bug fix in initialization (spotted by M. Mazloff) of
927      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
928    
929    checkpoint58c_post
930    o adjoint: finish NLFS adjoint and provide reference output in
931      verification/global_ocean.90x40x15/results_ad_nlfs
932    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
933      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
934      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
935      with SEAICE_CGRID defined.
936    o move calendarDumps from "data" to "data.cal" and clean-up the code
937      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
938    o add useEXF & useCAL flags (for now, set in hard-coded way)
939    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
940      (were missing in NH mode, and wrong in quasihydrostatic mode).
941      waiting for Chris updated version of calc_gw to add those CALLs.
942    o fix bug in quasihydrostatic S/R ;
943      add a test for this option: global_ocean.90x40x15.qshyd
944    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
945      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
946    o add on/off flag useOffLine for package OFFLINE
947    o seaice:
948      - modify advection so that it works also on the C-grid
949      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
950        problem in multi-tile runs with C-grid
951      - add flags for clipping ice velocities and/or masking solver forcing
952      - fix drag (ocean on ice) formulation and a bug that caused noise in the
953        C-grid solver
954      - added a few comments to seaice_diffusion.F
955      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
956        are now exclusive)
957      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
958        required re-ordering the code a little:
959       + make DAIRN global variable (defined in SEAICE)
960       + move computation of the viscosities eta and zeta into a new separate
961         routine (because I need to recompute them in seaice_ocean_stress.F)
962    
963    checkpoint58b_post
964    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
965      update output.txt of exp. aim.5l_cs.thSI
966    o various mnc cleanups and improvements:
967      + shrink lookup tables by factor of ~4
968      + better error reporting when running out of lookup space
969      + able to handle longer path/file names (up to 500 chars)
970    o adjoint:
971      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
972      - TBD: "hidden" mom_vecinv recomp. in dynamics
973    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
974     (allow to differentiate between forcing components using new integer flags:
975      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
976     and add new flag to put Dissipation tendency out of Adams-Bashforth.
977    o ecco
978      - enable trend removal from SSH anomaly obs.
979    o adjoint
980      - a fix for PmEpR when #undef EXACT_CONSERV
981      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
982      - try to fix "hidden" recomp. in forward_step for NLFS
983        (NLFS seems broken sometimes after I checked it in)
984    o seaice:
985     - add c-grid version of the dynamic solver:
986       + three new routines that are the c-grid substitute lsr, dynsolver
987         and ostres
988       + put a few fields that were local to dynsolver into global common
989         blocks, so that I can move the computation of stresses etc into
990         seaice_lsr (saves coding but may break the adjoint).
991     - replace more hardwired parameters by runtime parameters
992     - add ice masks that mask the rhs of the implicit solvers where there
993       is no ice (commented out in seaice_dynsolver, because i am not sure
994       if this works properly), eventually this should replace the clipping
995       of ice velocities in seaice_dynsolver to +/-40cm/s.
996    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
997      include it only where its needed
998    o move balancing of fluxes before the call of external_forcing_surf
999    o seaice:
1000      - correct units of turning angles (now they are really in degrees)
1001      - move computation of GWATX/Y out of main routine into dynsolver
1002      - initialize GWATX/Y in seaice_init
1003    o Apply mask on Fresh-Water flux (needed for SSH forcing).
1004      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
1005    o seaice: add runtime flags for turning angles (default to zero)
1006    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
1007      and trend from exf forcing and ctrl control adjustments
1008    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
1009      (since checkpoint57x_post)
1010    o change the default rotation period to 86164.s = the Earth rotation
1011    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
1012      and based on a reference stratification. Tested within hs94.cs-32x32x5.
1013    o seaice advection: add code for choosing between the default (2nd order
1014      central differences) and multiDim advection schemes provided by
1015      pkg/generic_advdiff
1016    o seaice:
1017      - removed all references to SEAICE_GRID.h fields from
1018        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
1019        (cubed-sphere configuration will change a little)
1020      - grid computations in seaice_init are obsolete now.
1021      - cleaned up code a little so that is easier to read (hopefully).
1022      - added new (better?) discretizations of default advection and diffusion
1023        (turn on with SEAICEuseFluxForm)
1024      - replace 1 in 3d global fields by kSurface in growth.F
1025      
1026    checkpoint58a_post
1027    o seaice:
1028      - bug fix in advect.F
1029    o shelfice:
1030      - separate shelfice load anomaly from pload (breaks with time
1031        dependent forcing), => introduce constant field shelficeLoadAnomaly.
1032        Its default is 0., but it may be computed more cleverly from (unknown)
1033        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
1034        done offline. A good approximation of the pressure load anomaly is
1035        necessary to avoid large initial adjustment processes underneath
1036        deep-reaching shelfice.
1037      - small fix in ISOMIP shelfice_thermodynamics
1038      - add more sophisticated thermodynamics of Hellmer (1989), this is
1039        now the default
1040      - give a few constants more intuitive names
1041    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
1042      if bulk formulae are used in long integration (especially EmPmR). Turn
1043      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
1044      if balancePrintMean, the imbalance that is substracted is printed to
1045      STDOUT.
1046    o fix bug (typo) in obcs_apply_eta.F
1047    o add a new package shelfice which enables us to model the circulation
1048      underneath shelf-ice with draughts of hundreds of meters.
1049     - works
1050     - to do: + include improved thermodynamics
1051              + check whether kSurfC (from model/inc/SURFACE.h) can be used
1052                instead of new field kTopC
1053              + can we use topoFile, Ro_surf and existing code in ini_depth.F
1054                instead of new field R_shelfIce and new code in ini_depth.F
1055                and ini_mask_etc.F?
1056              + adjust vertical mixing schemes?
1057    o seaice pkg:
1058     - add a cpp-flag to include a simple formula for a salinity dependent
1059       freezing point of sea water at the surface
1060     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
1061       meridional stresses are now different (and hopefully correct)
1062    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
1063       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
1064       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
1065    o pkg/diagnostics: add options and parameters for regional-statistics
1066       diagnostics ; define regions by reading a region-mask from a file
1067       (might add other options later)
1068    o pkg/bulk_force:
1069     - add option and parameters to use AIM surface-flux formulae.
1070     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
1071       others forcing fields (defined in PARM05, parameter file "data") are loaded
1072       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
1073     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
1074     - use the right EXCH call for uwind,vwind (to work on CS-grid).
1075     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
1076       and parameters (note: calcWindStress replaces .NOT.readwindstress).
1077     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
1078    
1079    checkpoint58
1080    o add "--embed-source" option to genmake2 which, when the supporting
1081      tools can be compiled (as determined by genmake2) will turn on the
1082      embed_files package which then embeds the entire MITgcm source code
1083      (*.[fFhc] + Makefile) used for the build within the executable
1084      - requested by CNH but off by default
1085      - adds a paltry <9MB to the mitgcmuv executable in most cases
1086      - only writes the output when useEMBEDSRC in eedata is true
1087    o clean up 3-dim. relaxation codes:
1088      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
1089      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
1090      * Thanks to Tom Haine for testing!
1091    
1092    checkpoint57z_post
1093    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
1094      affects output (@ truncation level) of exp. plume_on_slope ; updated.
1095    o fix the pickup behavior for obcs in combination with ptracers
1096    o fix a bug in ptracers_external_fields_load
1097    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
1098      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
1099    o transfered surface NH pressure to eta field (if exactConserv).
1100    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
1101         and update lab_sea output.txt file.
1102    o completing 3-dim. relaxation code: additional term
1103         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
1104      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
1105      * At compile time, in "EXF_OPTIONS.h" set
1106          #define  ALLOW_CLIMTEMP_RELAXATION
1107          #define  ALLOW_CLIMSALT_RELAXATION
1108      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
1109          tauThetaClimRelax3Dim = 15552000.0,
1110          tauSaltClimRelax3Dim  = 15552000.0,
1111      * 3 cases:
1112          1) Use a constant-in-time 3-dim. field
1113          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
1114          3) Real-time relax. to time-evolving prescribed field
1115    o Adding Laplacian-type smoothness constraint on
1116      initial and boundary (forcing) controls (ic, bc)
1117      * enable at compile-time via
1118        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
1119      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
1120      * Absolute scale somewhat unclear so far
1121      * no area weighting was included since no other cost term does so far
1122    
1123    checkpoint57y_post
1124    First step for a NLFS adjoint
1125    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
1126    o new init. routines for calc_r_star, calc_surf_dr
1127    o still need to deal with ini_masks_etc
1128    o testreport seemed happy
1129    checkpoint57y_pre
1130    
1131    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
1132    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
1133    o add new offset feature to offline pkg (plus minor cleanup)
1134    o cfc fixes for final year of integration
1135    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
1136      be in GCHEM_OPTIONS).
1137    
1138    checkpoint57x_post
1139    o fix testreport Pb in multiple test experiment.
1140    o cleanup our namelist syntax in verification:
1141      - make it more F95 standards compliant (some work still needed)
1142      - allows the vast majority of our tests to work with gfortran
1143    o Non-Hydrostatic:
1144     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
1145     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
1146    o Allow to apply AB on T,S rather than on AB(gT,gS):
1147     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
1148     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
1149       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
1150     - need a "clever" read_pickup to restart from the other AB formulation
1151    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
1152    o remove some unused variables (reduces number of compiler warnings)
1153    o adjoint
1154      * Disable useVariableViscosity for adjoint for time being
1155        (there are a number of extensive recomputations)
1156      * Initialize certain variables needed for adjoint
1157    
1158    checkpoint57w_post
1159    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
1160                 fix the singleCpuIO RS version of MDSWRITEFIELD
1161       and add a WARNING if using globalFiles=T with multi-processors.
1162    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
1163      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
1164    o tracer advection scheme:
1165      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
1166       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
1167       was not very convenient).
1168      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
1169       (further tests needed for the implicit DST & Flux-Limiter schemes).
1170    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
1171      and sRef for convenience, handy, when you want to initialize
1172      ptracers in a large domain with a constant non-zero value. Also,
1173      untangle ptracers_init.F a little.
1174    
1175    checkpoint57v_post
1176    o change dome exp. to use variable viscosity in side-drag terms.
1177    o remove all the files from the cfc_offline test since they are now
1178      incorporated into tutorial_cfc_offline which has been producing
1179      identical results for a few days of testing
1180    o add new parameter: sideDragFactor to enable half-slip-side BC
1181      and change side-drag S/R to use viscosity from mom_calc_visc
1182      (can switch back by setting sideDragFactor=0.); affects results at
1183      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
1184       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
1185    o vorticity & strain are now computed without masking, to account for
1186      no-slip-side BC in variable viscosity calculation ; mask is applied
1187      anyway later on, before computing advection/coriolis terms.
1188    o modify exp4 to test new obcs support for reading from external files
1189      and for passive tracers
1190    o fix behavior of ptracers_monitor when monitor output is written to a
1191      netcdf-file; still not independent of monitor.F (writes in the same
1192      file).
1193    o change default value of tRef (put a uniform, meaningful value for ocean
1194      & atmos) and initialize sRef (was missing, as Martin mentioned).
1195    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
1196      to be proportional to enstrophy dissipation length.  Thus,
1197       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
1198      This is now consistent with Smagorinsky and with the manual.
1199    
1200    checkpoint57u_post
1201    o OBCS and PTRACERS: add open boundary support for passive tracers
1202      - either use homogenous (pseudo) v.Neumann conditions or prescribe
1203        OB-values from file; this is not different from the way theta and salinity
1204        are treated
1205      - however, Orlanski-radiation conditions are not supported, and the model
1206        will stop if you use pTracers and Orlanski at the same time.
1207      - beefed up the rountine obcs_external_fields_load: now only those open
1208        boundary values are overwritten with values from files for which there
1209        are really files, otherwise the OB-fields remain untouched. This makes
1210        it possible to use different OBs at different ends of the domain (as
1211        with EXF)
1212    o reduce number of exch calls in shap_filt (s2).
1213    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
1214      truncation level) 4/5 MLAdjust test results (11&12 digits match).
1215    
1216    checkpoint57t_post
1217    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
1218    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
1219      same truncation, independent of the face number: affects affects several
1220      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
1221    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
1222      note that biharmonic viscosity + no-slip was not tested in any experiment.
1223    o fix bug in non-linear free-surf side-drag ; generate new output for
1224      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
1225    o make mnc honor the writeBinaryPrec flag for most kinds of output
1226    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
1227    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
1228      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
1229    o add brackets in multi-terms sum to get same truncation, independent of
1230      the face number (manage to get exactly same value of gU,gV at the cs-edge)
1231      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
1232    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
1233      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
1234      a maximum grid-scale Reynolds number.  Also, changes all length calculations
1235      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
1236      Suggested values of viscosity parameters found in mom_calc_visc.
1237      Many new viscosity diagnostics available.
1238    
1239    checkpoint57s_post
1240    o Add clearing-house for viscosity calculations, mom_calc_visc and
1241      correct numerous bugs in LeithD and Smagorinsky discretizations.  
1242      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
1243      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
1244      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
1245      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
1246      The Strain-Tension form is now called with useStrainTensonVisc=.true.
1247      ViscAhStrain and viscAhTension are now retired.
1248    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
1249    o In response to JMC's bug report, genmake2 now ignores any soft-links
1250      that it finds in the *current* directory when searching for files.
1251      Soft-links found in any other source directories will still work as
1252      they did before.
1253    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
1254      a C routine to unlimit the stack size
1255    o mnc-ify pkg/aim snapshot vars
1256    o mnc-ify pkg/land as requested by Daniel
1257    o various changes to mnc including:
1258      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
1259      - output can now be grouped so that all files within a group
1260          change the ITER portion of their names in lock-step together
1261      - can now read ("global") PER-FACE (in addition to PER-TILE) files
1262          and works with both EXCH1 and EXCH2 (but needs more testing)
1263      - writing works for all verification test cases w/ g77 on Linux
1264    
1265    checkpoint57r_post
1266    o make MNC variable initialization happen earlier
1267    o add diagnostics for (almost) each term of the momentum Eq.
1268    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
1269    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
1270    o remove MINIMAL_TAVE_OUTPUT option ;
1271      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
1272    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
1273      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
1274    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
1275    o add time-dependent SST, SSS control
1276    o cost terms in ecco/ modularized (new cost_generic.F)
1277    o cost_averages routines are modularized (new cost_averagesgeneric.F)
1278    o new infrastructure for seaice model vs. obs misfits in seaice/
1279      * driver from the_main_loop.F is seaice_cost_driver.F
1280      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
1281      * gradient check in Exp. 6a of natl_box_adjoint/
1282    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
1283      (see README file)
1284    
1285    checkpoint57q_post
1286    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
1287    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
1288      - bug was reported by Jean-Michel and Ian Fenty
1289    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
1290      update exp. cpl_aim+ocn output.
1291    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
1292      Needed for high-res. runs with large global files
1293      to be able to limit tapelev size
1294    o Changed some tests for adjoint:
1295      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
1296      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
1297      * global_ocean.90x40x15/ back to default 3-level checkpointing
1298    o Modifications to enable scripted COMMON to MODULE conversion
1299      * verification/OpenAD/code/ has necessary scripts and description;
1300      * converts, compiles and runs successfully;
1301    
1302    checkpoint57p_post
1303    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
1304    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
1305      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
1306    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
1307    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
1308      (was already the case for dissipation with mom_vecinv,
1309       and also the case for grad.PhiHyd when staggered-timeStep)
1310      This will allow to put dissipation out-off the AB time-stepping.
1311     Unfortunately, affects truncation error. Update output of exp. that "fails"
1312      (cg2d matching number) and leave the others for later: front_relax(10),
1313      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
1314      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
1315    
1316    checkpoint57o_post
1317    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
1318      (2) its ready to be documented during the 20050801 DocFest
1319    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
1320      for ideal_2D_oce and lab_sea on linux_ia32_g77
1321    o set to #undef CTRL_SET_OLD_MAXCVARS_30
1322      in global1x1_tot/code_seaice_adj to access indices 32, 33
1323      (worth another tag)
1324    
1325    checkpoint57n_post
1326    o adding precip control xx_precip 32
1327    o adding swflux control xx_swflux 33
1328    o Replacing 10 forcing penalty cost routines by 1 generic.
1329    o Implementing partitioning in time-mean and variable adjustment
1330      for atmos. state.
1331    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
1332    o in natl_box_adjoint:
1333      * updated exp 1 to 10
1334        (but does not have time-mean vs. variable split results yet)
1335    o updated global1x1/*_seaice_adj/
1336      to incorporate latest changes
1337    o enable useSingleCpuIO for mdsio vector routines
1338      (applies in particular to tapelev I/O)
1339    o removed inefficient K-loop in all active_file*control*.F
1340    
1341    checkpoint57m_post
1342    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
1343      and advect_cs (use EXCH-2 and standard cs-32 grid files).
1344    o pkg/exch2: filling of face-corner halo regions is optional
1345      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
1346    
1347    checkpoint57l_post
1348     tag before updating tutorials (pre-release-2)
1349    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
1350       for output and interpolation of input fields onto model grid)
1351    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
1352       Affects results of exp. rotating_tank ; update output.txt.
1353    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
1354          and taking the square quantity and/or using a fraction-weight field.
1355    o fix aim_diagnostics_init.F mate numbers.
1356    o add mnc output capability to diagnostics/diagstat and update
1357      our cvsignore files for the ACSII output generated
1358    
1359    checkpoint57k_post
1360    o lab_sea now uses diagnostics package and provides a suite of
1361      new EXF diagnostics output.
1362    
1363    checkpoint57j_post
1364    o exf
1365      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
1366        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
1367        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
1368      * extended diagnostics output
1369        - now includes all EXF variables
1370        - hs, hl moved to common block
1371        - separate S/R for diagnostics, called after ctrl vector is added
1372        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
1373        - EXFqnet contains true Qnet (i.e. includes qsw)
1374      * updated verif. lab_sea, global_with_exf
1375      * Rearranging hflux (exf_mapfields -> exf_getforcing)
1376        to ensure that diagnostics sees a true EXFqnet
1377    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
1378    o diagnostics pkg: change pointers so that 1 diagnostic can be used
1379      several times with different frequencies.
1380    o mnc-ify the thsice package as requested by Daniel Enderton
1381      - the monitor--MNC output needs work
1382      - many attributes need to be added (most are currently blank)
1383    o mnc-ify theaim_v23 package as requested by Daniel Enderton
1384      - many attributes need to be added (most are currently blank)
1385    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
1386    o add Sadourny like discretization to the 4th.O vorticity advection scheme
1387    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
1388      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
1389         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
1390    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
1391     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
1392    
1393    checkpoint57i_post
1394    o Diagnostics package was changed: diagnostic allocation is now deactivated
1395      by setting an empty file name in the namelist (used to be by setting 0 frequency)
1396    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
1397      add 1rst Order upwind vertical Shear.
1398    o add a quick fix for A/B checkpointing in OFFLINE mode
1399    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
1400      end-run around the C/Fortran linking horror in eesup/src/timers.F
1401    o added pkg/runclock: allows user to terminate run based on wall clock
1402    o added non-hydrostatic scaling parameter: nh_am2
1403    o pkg/my82: futile attempt to make results compiler-independent by adding
1404      some "_d 0", etc. no effect.
1405    o for mnc output, fill the 'T' coordinate var with myTime and create a
1406      separate 'iter' variable for iteration count
1407    o pkg/diagnostics:
1408      add new capability: output of Global/Regional & per-level statistics ;
1409      tested against monitor output (including land & thSIce) on various exp.
1410    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
1411    
1412    checkpoint57h_done
1413      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
1414      data.diagnostics, data.gchem, data.ptracers) is done.
1415    
1416    o pkg/diagnostics: prepare for Global/Regional statistics.
1417      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
1418    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
1419      and rename it: DIFFERENT_MULTIPLE
1420    
1421    checkpoint57h_post
1422    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
1423    o pkg/diagnostics: change output frequency, now in seconds (instead
1424      of Nb of iterations). This requires to change data.diagnostics.
1425    checkpoint57h_pre
1426    
1427    o in mnc, let the user create the output dir if both mnc_outdir_date
1428      and mnc_outdir_num are false
1429    o add fflags() to pkg/diagnostics which allows one to specify, on a
1430      per-file basis, the file precision [default behavior is unchanged]
1431    o added diagnostics to pkg/kpp, including computation of mixed layer
1432      depth based on a temperature/density criterion
1433    o updated verification/natl_box to test the new pkg/kpp diagnostics
1434    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
1435    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
1436    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
1437      not mnc -- this mistake was found by JMC and is now corrected
1438    
1439    checkpoint57g_post
1440    o add Adams-Bashforth 3rd Order time stepping:
1441      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
1442      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
1443    checkpoint57g_pre
1444    
1445    o make lambda[Theta,Salt]ClimRelax spatially varying
1446      (default remains spatially uniform constant based on tau)
1447    o added new control variables
1448      * init. uVel, vVel, etanN
1449      * lambda[Theta,Salt]ClimRelax
1450    o separate masks used for ctrl_pack/unpack 'from write_grid' output
1451      (suggested by G. Forget)
1452    
1453    checkpoint57f_post
1454    o add parameter "baseTime" = model base time = time at iteration zero
1455      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
1456      account for baseTime shift
1457    o move Coriolis arrays from PARAMS.h to GRID.h
1458    checkpoint57f_pre
1459    
1460    o mnc-ifying the seaice package
1461    o introduced an alternative length scale calculation for use in the limiting
1462      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
1463    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
1464    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
1465      as well as grad(vort3).  Made it compatible with both approximate form
1466      for the cubed sphere and full form of these gradients.  Added flag
1467      useFullLeith to select between approximate and full form.  
1468    o add "d0" in getcon.F to reduce differences between compilers/platforms
1469      update output.txt of exp. fizhi-gridalt-hs
1470    o change port_rand funtion to allow to set the seed.
1471    o fix obscure MNC bug involving conversion between reals and integers
1472      - it caused no problems with certain (eg. gcc, ifc) compilers but the
1473        new version is now more standards-compliant
1474    o adjoint-related modifications
1475      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
1476      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
1477      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
1478    
1479    checkpoint57e_post
1480    o Adding eddy stress controls a la Ferreira et al.
1481    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
1482    
1483    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
1484      update output.txt of exp. fizhi-gridalt-hs
1485    o add more "Z" dimensions and associated coordinate vars to MNC
1486    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
1487    o parameter calendarDumps: when set, approximate months (30-31 days) and years
1488      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
1489      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
1490      months and years.  Requires pkg/cal.
1491    o diagnostics: add pickup functionality
1492      - off by default for backwards compatibility
1493      - current version only uses MDSIO -- MNC will be added
1494    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
1495    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
1496    
1497    checkpoint57d_post
1498    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
1499    o modify verification/ideal_2D_oce so that it tests the creation of mnc
1500      output from the diagnostics package
1501    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
1502    o make genmake2 more portable by using ".$FS" instead of ".f" for more
1503      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
1504    o add coordinate variables to the MNC output from the diagnostics package
1505    o change MNC-flags default value: true when useMNC=TRUE
1506    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
1507      the ability (off by default) to read the grid information using MNC
1508    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
1509    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
1510    o do snap-shot diagnostics at the middle of the time-interval (instead of
1511      at the end).
1512    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
1513      new test for AIM with thSIce + slab-ocean
1514    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
1515    o move state variable diagnostics to the beginning of the time step ;
1516      (note: still needs some work specially for snap-shot diagnostics)
1517      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
1518    
1519    checkpoint57c_post
1520    o Change testing option (-ieee) to get closer agreement between g77 & ifort
1521    o generate new output.txt files on faulks with g77 & the new -ieee option
1522    checkpoint57c_pre
1523    
1524    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
1525      update output.txt of exp. global_ocean.90x40x15
1526    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
1527      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
1528    o add saltFlux(+File) forcing capability with periodicExternalForcing
1529    o allow to use pkg diagnostics for GM-Redi & ThSIce output
1530    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
1531    o improvements for the MNC output from DIAGNOSTICS:
1532      - correct handling of the unlimitied dimension
1533      - all dims now have associated coordinate variables
1534      - variables located at U, V, and Corner ("Z") points are now written
1535        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
1536        *all* data points are output
1537    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
1538    o added pkg/seaice/seaice_monitor.F
1539    o mdsio_readfield.F can now read files visible only to master MPI process.
1540    o pkg/seaice: some test code for ice-modified ocean stress
1541    o exf_getffields interpolation defaults to bilinear for all scalar forcing
1542      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
1543      spurious negative numbers for precipitation and humidity.  Will cause
1544      some small numerical differences for integrations using pkg/exf/exf_interp.F.
1545    o pkg/ctrl/
1546      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
1547        May be enabled via doPackDiag
1548      *  introduce z-scaling of
1549         + gradient (doZscalePack) and
1550         + control (doZscaleUnpack)
1551    o pkg/mdsio/
1552      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
1553      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
1554    
1555    checkpoint57b_post
1556    o simplify options in diagnostics_fill arguments (remove weird combinations)
1557    o fix MNC coordinate variables so that they now contain per-face index
1558      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
1559      general, EXCH2 grids are only aligned to a "local" coordinate system
1560    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
1561    o Implement instantaneous output within pkg diagnostics:
1562      setting a negative frequency in data.diagnostics produces
1563     "snap-shot" output (as opposed to time-average if freq > 0)
1564    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
1565      NOTE: change ptracer diagnostics name: use 2 characters to work with
1566            more than 9 tracers. Add also diagnostics of advect & diffus flux.
1567    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
1568      becomes the coordinate variable for the 'T' dimension
1569    o add CF-style coordinate variables to MNC
1570      - just a first cut:  numbers are meaningless on the cubesphere and
1571        missing along the T axis but otherwise it works!
1572    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
1573    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
1574    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
1575      this is based directly on what the model compute, so that the content of
1576      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
1577    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
1578    o clean up build options files for SunOS, in particular
1579      - remove -traditional from xmakedepend
1580      - change -xarch=v9 to -xarch=native for f77
1581      - restore use of make (not gmake)
1582      - add CC=gcc if using g77
1583    o changes per discussion of AM, JMC, & EH3 today:
1584      - move redundant "grid" variables out of "state" -- in preparation of
1585        creating proper CF-style coordinate variables and in recognition
1586        that any/all grid variables can be easily copied (eg. w/NCO) from
1587        the grid files into any of the other NetCDF files
1588      - *always* output grid variables with MDSIO (this will eventually be
1589        changed)
1590      - output MNC grid file if useMNC is true
1591    o every instance of _END_MASTER() has been found and replaced with
1592      _END_MASTER( myThid ) in order to satisfy certain picky Sun
1593      preprocessors
1594    o re-arrange diagnostics pkg initialisation:
1595     - allow each package to extend the available diagnostics list
1596     - add some checking and fix small problems (multi-threaded, ...)
1597     - new S/R diagnostics_fill (replace fill_diagnostics):
1598       look through the short list of active diag. (instead of the long list)
1599       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
1600    
1601    checkpoint57a_post
1602    o this set of changes restores TAMC compatibility
1603      tested for global_ocean.90x40x15 adjoint on trough
1604      (what a pain)
1605    
1606    checkpoint57a_pre
1607    o some modifs in tools/build_options for sunos
1608    o call ctrl_pack for ctrl at end for optimcycle=0
1609    
1610    checkpoint57
1611    o add horizontal bi-harmonic viscosity for vertical velocity
1612      - new parameter viscA4W (defaults to viscA4)
1613      - affects only non-hydrostatic code
1614      - to be done: no-slip lateral boundary conditions
1615    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
1616    o implement Implicit Vertical advection for pTracers
1617    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
1618      (implemented also for implicit vertical diffusion & advection)
1619    o OBCS: extend application of tracer open boundary conditions
1620      to a strip beyond the boundary of width Olx/Oly
1621    o add call monitor to TAF set of required calls (flow directives)
1622      and include in natl_box_adjoint
1623    o untangle a few ifdefs related to cost, ctrl, autodiff
1624      untangel a few ALLOW_ECCO_OPTIMIZATION
1625    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
1626      (theta2, salt2 in ecco_cost_weights)
1627    
1628    checkpoint56c_post
1629    o OBCS as control variables
1630      - update ctrl_ad_diff.list, obcs_ad_diff.list
1631      - remove balance of obcs controls from default
1632      - fix index bug nobcs in ctrl_init
1633      - fix dummy fields filen in ctrl_pack
1634      - add dummy weights for obcs
1635    o lsopt: comment out fort.94 output
1636    o optim:
1637      - remove unnecessary header files
1638      - adjusted namelists
1639      - add xerbla.F to Makefile
1640    o exf:
1641      - multiple modifications of exf_check_range
1642      - unit change in exf_init_runoff from [m/year] to [m/s]
1643    o mdsio:
1644      - i/o-vector change debugLevel from debLevA to debLevB
1645    
1646    checkpoint56b_post
1647    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
1648      is called from DO_THE_MODEL_IO
1649      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
1650      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
1651      - clean up PTRACERS_WRITE_TIMEAVE a little
1652    o add another verification experiment that tests both the cfc-pkg and
1653      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
1654      reactive tendencies treated inline with regular timestepping
1655    o testreport previously did a lousy job of comparing small numbers, so
1656      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
1657      implemented in the little c-progam tmp_cmpnum.c which is embedded in
1658      testreport.
1659    o ptracers_monitor: bug fix for MPI
1660    
1661    checkpoint56a_post
1662    o GCHEM: finish reorganizating the package
1663      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
1664        (introduces another 3D-array for each passive tracer, but only if
1665        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
1666        gchemTendency is not needed because the timestep is done separately)
1667      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
1668      - GCHEM is now---more or less cleanly---separate from PTRACERS
1669      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
1670        so clear to me how that should be done in a general way.
1671    o CFC: improve formatting of output in CFC_ATMOS
1672    o PTRACERS:
1673      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
1674        that ALL experiments with ptracers enable can be checked. This makes
1675        GCHEM_MONITOR obsolete.
1676      - include a runtime parameter PTRACERS_monitorFreq that defaults to
1677        monitorFreq
1678      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
1679    o add PTRACERS (PTR0[1-5]) to testreport output
1680    o exf_check_range:
1681      * default changed to .TRUE.
1682      * will check values for niter0 if debLevA, every timestep if debLevB
1683      * STOP in exf_check_range if 'out of range'
1684      * range chosen generous to allow for potential extema
1685      TBD: a version with stricter range
1686           permitted range would be runtime parameters
1687    o GMredi:
1688      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
1689      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
1690      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
1691    o GCHEM:
1692      - move call to GCHEM_FORCING_SEP, so that it is now called before
1693        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
1694      - introduced a useGCHEM runtime flag and applied it everywhere.
1695      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
1696        this flag is now only visible within GCHEM-pkg routines.
1697      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
1698        be replaced by a 3D array that is computed before thermodynamics; for
1699        this, the tracer ID iTracer had to be included into the parameter list
1700        of ptracers_forcing
1701      - set up forward_step to call gchem_forcing, that will replace
1702        gchem_forcing_int in ptracers_forcing
1703      - cleaning up
1704    o small cleaning of exch2: remove files that are also in eesupp/src
1705    
1706    checkpoint56
1707    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
1708    o mnc: cleanup "full" files--fixes out-of-memory problem
1709    o ECCO-GODAE
1710      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
1711      * fully merged and updated from SIO code
1712        windstress sign change affects
1713        - exf_inscal_[u/v]stress
1714        - sign of xx_tau[u/v] adjustments
1715        - signs in cost_scat
1716      * ctrl_get_gen: avoid update of tau[u/v] for first few days
1717      * natl_box_adjoint updated and compressed
1718      * 2-level checkpoint switch added
1719        (tested in EXP. 1 of natl_box_adjoint)
1720      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
1721    o SVD
1722      * first complete, non-hacked version for SVD calculations
1723      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
1724        performed via direct access files admtlm_vector.it????
1725        (via ctrl_[un]pack)
1726      * optimcycle is used for ARPACK iteration counter
1727        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
1728      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
1729        and add linear transforms where necessary
1730      * controls are initial/final SST, SSS (can be extended; need to check
1731        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
1732    o mdsio: filename info to both stderr, stdout
1733    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
1734      from sign change
1735    
1736    checkpoint55j_post
1737    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
1738      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1739    o add consistent build directories and .cvsignore files to verification
1740    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
1741    o make all subroutines 30 or less characters in length for certain older
1742      compilers to work (a thorough search only turns up two routines in
1743      pkg/ptracers)
1744    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
1745      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1746    
1747    checkpoint55i_post
1748    o change arrays for total vertical diffusivity (2.D if explicit,
1749      3.D if implicit) ; each ptracer uses its own background value.
1750    o added mnc/NetCDF output capability to ocn_compon_interf
1751      - added bits to verification/cpl_aim+ocn so that it can run on
1752        ITRDA and other clusters without the mpirun "-wd" option
1753    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
1754      configuration
1755    o give MNC the ability to create additional files rather than
1756      exceeding a specified file size limit "MNC_MAX_FILESIZE"
1757      - the default is just less than 2GB which is a practical limit
1758        on many systems
1759    o Compute the non-local term using either KPP vertical diffusivity (=default)
1760       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
1761    
1762    checkpoint55h_post
1763    o add verification test "vermix"
1764    o remove all the *_ioinc flags and replace with the single global
1765      outputTypesInclusive flag
1766    o allow to set a vertical profile of vertical diffusivity for T & S
1767    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
1768    o useMNC moved from data.mnc to data.pkg
1769    
1770    checkpoint55g_post
1771    o Renaming carbon AD experiments to comply with testreport conventions
1772    o Updating adjoint of Held-Suarez hs94.1x64x5
1773    o Fixing directives for non-ECCO forward_step, after ECCO directives
1774      have been fixed to avoid recomp. of do_oceanic_phys
1775      Works well for global_ocean.90x40x15,
1776      but recomp. issue remains for carbon
1777    o Updating adjoint output for natl_box_adjoint after
1778      pkg/ecco has been modified (see taga c55d_post)
1779    
1780    checkpoint55f_post
1781    o rename to timeave_init_fixed
1782    
1783    checkpoint55e_post
1784    o some delicate re-shuffle of store directives to avoid one
1785      extra call of do_oceanic_physics
1786      affects ecco_the_main_loop.F, do_oceanic_physics.F
1787      checkpoint_lev1_directives.h
1788    o NB: this may break global_ocean adjoint temporarily,
1789      but it is clear how to fix it. Will do later, need this now.
1790    
1791    checkpoint55d_post
1792    o ECCO specific cost function terms (up-to-date with 1x1 runs)
1793    o ecco_cost_weights is modified to 1x1 runs
1794    o modifs to allow observations to be read in as
1795      single file or yearly files
1796    o enable to read exf forcing fields as either
1797      single file or yearly files (flag useExfYearlyFields)
1798    checkpoint55d_pre
1799    
1800    o switch between 2-level and 3-level checkpointing
1801    o add ability of MNC to write local and "partial" (eg. 2D slices where
1802      the full 3D field is never actually stored) arrays to NetCDF files
1803      with the correct (that is, the complete multi-dimensional) set of
1804      array indicies
1805      - used in mom_vecinv() to write the diagFreq output
1806      - tested (demonstrated) in verification/aim.5l_cs
1807    o further mnc-ification
1808      - add verification/lab_sea to the list with mnc setups
1809      - fix undefined mnc v-names in cd_code
1810      - add kpp to mnc output (both snapshot and timeave)
1811    o non-hydrostatic code
1812      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
1813        in calc_gw.F
1814      - defaults to viscAh
1815      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
1816        friction or Leith) in non-hydrostatic mode, as long as there is
1817        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
1818    o pkg/cost
1819      extend simple cost functions to treat time mean quantities
1820      (T,U,V) via cost_accumulate_state from cost_tile
1821    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
1822        be 2 times larger than the minimum size the advection scheme requires.
1823        now get a perfect conservation of salt in advect_cs test-exp (updated)
1824    o GGL90 (Gaspar's TKE mixed layer)
1825      - add horizontal diffusion of TKE, requires exchanges in
1826        do_fields_blocking_exchanges, horizontal diffusivity is zero by
1827        default. In OPA there is no horizontal diffusion of TKE but the
1828        mixing coefficients are computed from a horizontal average of TKE of
1829        6 points or so. I think that diffusion has a little more physical
1830        justification.
1831      - clean up ggl90_calc in the hope of reducing memory usage (this hope
1832        was in vain)
1833      - mask tke-variable in ggl90_init
1834    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
1835    o fix biharmonic diffusion on CS-grid.
1836    o more obcs stuff
1837      - added obcs_external_fields_load as an alternative to the EXF-pkg option
1838        for reading boundary values. This routine is called from
1839        obcs_prescribe_read
1840      - updated obcs_check
1841      - changed sponge layer relaxation parameter units for days to seconds
1842      - turned off sponge layer by default
1843      - changed argument list of OBCS_CALC to myTime+deltaTclock
1844      - fixed about 35 bugs in obcs_external_fields_load
1845    
1846    checkpoint55c_post
1847    o obcs stuff
1848      - new runtime flags useOBCSprescribe, useOBCSbalance
1849      - re-arranged obcs_calc
1850      - moved exf_getobcs to obcs_prescibe_read
1851        obcs_prescibe_read is called after ORLANSKI stuff
1852        and independent of it (executable can contain all).
1853      - updated obcs_check
1854      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
1855        These may be necessary only if tangential velocities are
1856        prescribed at OB, not sure, needs testing.
1857    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
1858      which simplifies the calls and passes the ifc check-bounds test
1859    
1860    checkpoint55b_post
1861    o add a 2D scalar, Z location, exchange_2 routine.
1862    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
1863      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
1864      affects advect_cs results (for the wrong reason): update output.txt
1865    o use a more standard discretization for biharmonic viscosity ;
1866     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
1867      affects results of dome set-up: update output.txt
1868    o fix gad_advection.F (CubedSphere part), back to version 1.23
1869    o fix bug in mom_vi_del2uv.F (CubedSphere part).
1870    
1871    checkpoint55a_post
1872    o merged code to
1873      * prescribe/read time-dependent open boundaries
1874        (works in conjunction with exf, cal)
1875      * sponge layer code for open boundaries
1876      * each boundary N/S/E/W now has its own CPP option
1877        (healthy for the adjoint)
1878    
1879    checkpoint55
1880    o up-to-date adjoint of previous breaks
1881      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
1882      - global_ocean_ebm: adjoint still needs fix (TLM ok)
1883      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
1884      - carbon: * remove tr1-related adjoint verification
1885                * add ptracer as control variable
1886    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
1887      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
1888    
1889    checkpoint54f_post
1890    o in verification/carbin/ remove experiment related to
1891      ALLOW_PASSIVE_TRACER (array tr1 etc)
1892      code_ad/ input_ad/ results_ad
1893    
1894    o add two new packages
1895      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
1896        + subject to optimization (memory)
1897      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
1898        + subject to reordering (many GOTOs in the original code)
1899        + so far opps is called for every (i,j) point, and then operates in
1900          the vertical; one may want to reorder the scheme in order operate in
1901          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
1902          fields)
1903    o overhaul of IO so that we now have flags for MDSIO and/or MNC
1904      - all verification tests compile and run with linux_ia32_g77
1905      - defaults are compatible with current input files--nothing
1906        should change if you were not previously using MNC
1907      - MNC output has been added in numerous places (eg. timeave)
1908        but there are still a few writes not yet do-able with MNC
1909        (this is in progress)
1910      - flags now allow for either/or/both use of MDSIO and MNC and
1911        documentation will soon follow
1912      - numerous small formatting cleanups for ProTeX
1913    o add version info (via BUILD_INFO.h) to MNC and stdout
1914    
1915    checkpoint54e_post
1916    o add two new packages
1917      - pp81 (Packanowski and Philander, 1981), Richardson number and
1918        stratification dependent mixing
1919      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
1920      - these scheme operate in a similar manner as KPP (without ghat, of
1921        course), however there is only one diffusivity that is used for both
1922        temperature and salinity (and passive tracers)ç
1923    o add offline package
1924    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
1925      provided by Stephanie Dutkiewicz
1926    o genmake2: add ability to search for C compilers and cleanup test output
1927      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
1928    
1929    checkpoint54d_post
1930    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
1931    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
1932      leading to additional shift by 5 days each year of integration
1933       (i.e. leading to considerable offset over the years)
1934    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
1935    o start with no AB and no initial filtering (staggerTimeStep):
1936      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
1937    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
1938      (external loading & cpl import/export stay in forward_step.F)
1939    o update coupling interface to work with new staggerTimeStep
1940    o change MDSIO ptracers_pickup.
1941    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
1942    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
1943    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
1944    
1945    checkpoint54c_post
1946    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
1947      this affects (truncation error) output.txt of test-exp:
1948       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
1949    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
1950    o change Qnet to always be the net heat flux, (+upward).
1951      affects (truncation error) output of natl_box exp.: updated
1952    o define the max number of passive tracers in PTRACERS_SIZE.h
1953    o start to test mnc routinely in exp0
1954    o add sea-ice loading (sIceLoad) as a new forcing field.
1955    
1956    checkpoint54b_post
1957    o add testreport "-j JOBS" option for parallel builds (tested and pretty
1958       impressive on Altix and Opteron systems)
1959    o diagnostics can now write NetCDF files through the mnc package
1960    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
1961    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
1962    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
1963      affects (truncation error) output of lab_sea & natl_box exp.: updated
1964    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
1965    
1966    checkpoint54a_post
1967    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
1968    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
1969    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
1970    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
1971      + internal_wave (shift in writing cg2d_ini_res)
1972    checkpoint54a_pre
1973    
1974    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
1975      - modified verification/lab_sea and natl_box_adjoint accordingly
1976    
1977    checkpoint54
1978    checkpoint53g_post
1979    o prepare splitting of thermodynamics: store convect.counter in common block
1980    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
1981      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
1982    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
1983    o new parameter "nShapS": allow to treat differently S from T (nShapT)
1984    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
1985    o restore adjointability
1986    
1987    checkpoint53f_post
1988    o modifications that affect AIM experiment results (update output.txt):
1989      - no advection of S at top interface Nr (pkg/generic_advdiff)
1990      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
1991    o AIM pkg:
1992      - include stability function into surf.Flux derivative relative to Tsurf
1993      - calculate clear-sky radiation & surface temp. change (for diagnostics)
1994    
1995    checkpoint53e_post
1996    o merged cylindrical coord configuration
1997    o added rotating_tank experiment
1998    checkpoint53e_pre
1999    
2000    checkpoint53d_post
2001    o faulks upgraded: re-generate output.txt that have changed:
2002       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
2003    o Added Bryan and Lewis, 1979, vertical diffusivity profile
2004    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
2005    o added Sadourny discretization of Coriolis
2006      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
2007      - re-enabled use of omega3 (useAbsVorticity)
2008    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
2009      vector-invariant equations
2010      - note: does *NOT* yet use same variable visc. for no-slip BC's.
2011    o recoded the lateral boundary conditions for non-hydrostatic w, this time
2012      hopefully without new bugs
2013      - still to do: biharmonic friction for non-hydrostatic w
2014    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
2015    o regenerated output for global_ocean_ebm (using -ieee)
2016    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
2017      of mom_common/
2018      - simple re-arrangement of instructions within computing loop
2019    checkpoint53d_pre
2020    
2021    checkpoint53c_post
2022    o new version of coupler for AIM+thSIce and Ocean models
2023     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
2024     - land: change Evaporation of snow
2025     - aim with thSIce: fix bug in snow-precip.
2026    o changes to calc_gw.F
2027     - bug fix for w^2 term near the bottom boundary
2028     - (hopefully) improve the lateral slip boundary condtions for use with
2029        partial/looped cells
2030      - because the bug fix changes two verification experiments anyway (exp5
2031        and plume on slope), change the lateral boundary condition from half slip
2032        to the value of no_slip_sides
2033    o ebm package wasnt quite up to the parallel task. Fixed that.
2034    o Adjoint of EBM package + verification
2035      * TLM OK
2036      * ADM not sufficient accuracy yet (needs further testing)
2037    
2038    checkpoint53b_post
2039    o Commiting new energy balance model to repository
2040      * package is pkg/ebm
2041      * verif. is verification/global_ocean_ebm
2042      * references are in ebm_driver.F
2043    C      * X. Wang, P. Stone and J. Marotzke, 1999:
2044    C        Global thermohaline circulation. Part I:
2045    C        Sensitivity to atmospheric moisture transport.
2046    C        J. Climate 12(1), 71-82
2047    C      * X. Wang, P. Stone and J. Marotzke, 1999:
2048    C        Global thermohaline circulation. Part II:
2049    C        Sensitivity with interactive transport.
2050    C        J. Climate 12(1), 83-91
2051    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
2052    C        Destabilization of the thermohaline circulation
2053    C        by atmospheric eddy transports.
2054    C        J. Climate 7(12), 1870-1882
2055    o Will need long integration testing.
2056    checkpoint53b_pre
2057    
2058    o created pkg/mom_common in preparation for variable viscosity code
2059    o renamed and split ini_mnc_io
2060    o pkg/land: only liquid water can diffuse or run-off
2061    o AIM using land: soil wetness availability account for snow
2062    o added printMapIncludesZeros to EEPARMS namelist
2063    
2064    checkpoint53a_post
2065    o restore TAMC compatiility for exf_constants.h
2066      (no usage of _d in .h)
2067    o Additional storing in KPP in an attempt to fix
2068      TAMC problem with adjoint of KPP code.
2069      (no success...)
2070      Identical code works fine with TAF.
2071    o Fixed verification/natl_box_adjoint experiments.
2072      Initial conditions for Experiments 4 and 5 are now
2073      set to "SEAICE_initialHEFF=0", which is more reasonable,
2074      and hence gives results closer to that of Experiment 2.
2075      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
2076    
2077    checkpoint53
2078    o stable checkpoint with up to date adjoint
2079      TLM tests only run for 1st grdchk at the moment. Its unclear if
2080      this is a code problem or a problem with resetting code for g_
2081      variables that is being autogenerated wrong.
2082      Otherwise:
2083       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
2084       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
2085         are both still in chaos following their security messes.
2086    
2087    checkpoint52n_post
2088    o various build (mostly genmake2) changes including:
2089      - ability to build/run more easily within Cygwin and MacOS X
2090      - more complicated Makefiles with a stronger dependence on Gnu Make
2091    o pkg/seaice modifications
2092      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
2093        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
2094        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
2095      - changed proxy for geostrophic velocity and updated
2096        verification/lab_sea/results/* accordingly
2097      - removed ADI dynamic solver from pkg/seaice
2098      - replaced all occurrences of 1/CSTICE or 1/CSUICE
2099        they caused a segmentation fault under certain circumstances
2100      - removed unused field WATR
2101    o bug fix in exf-package:
2102      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
2103         now reflect that.
2104    o small fixes in the cal-package:
2105      - set reference date to first of January for the 'model'-calendar
2106      - failing of cal_CheckDate in cal_FullDate now actually results in a
2107        warning
2108    o small modifications in exf-package to increase flexibility:
2109      - change climtempfreeze from a constant to a runtime parameter that
2110        is specified in data.exf_clim (default = -1.9)
2111      - introduce runtime parameter windstressmax (default = 2.0) that is
2112        specified in data.exf
2113    o fix in pkg/thsice:
2114      - update Evap (Tsf changes) to be consistent with Latent heat flux
2115      - maintain snow precipitation unchanged (even if Tsf >=0).
2116     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
2117    
2118    checkpoint52m_post
2119    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
2120      this does not change any of the results, because myIter=0 in swfrac always
2121      lead to jwtype=2 (the default anyway), but the call makes little sense
2122      as a default
2123    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
2124    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
2125      atmospheric model (AIM) to use it ; add a "slab ocean" component.
2126    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
2127    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
2128    o extending useSingleCpuIO option to work with new exch2 I/O format
2129      - old-style, missing-tile I/O is still accessible by defining CPP
2130        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
2131    o monitor package can write to NetCDF files and/or STDOUT
2132    o fix re-definition bug in MNC_GRID_INIT_ALL()
2133    o doc/api_reference added
2134      - a framework for building an API Reference Manual using all
2135        the "protex" comments embedded in the code
2136      - see pkg/generic_advdiff, pkg/mnc for examples
2137    o MNC:
2138      - make myThid the last argument for all subroutines
2139      - new default for the grid files: NO halos
2140      - add useMNC and other run-time flags
2141      - separate per-file-group handling of the unlimited dimension
2142      - early initialization of MNC w/ flags read at the eeboot stage
2143        and lookup tables set in initialize_fixed
2144      - write all MNC output to a freshly-created directory
2145    o thermodynamics sea-ice (thsice) is now tested with testreport.
2146    o test exp. advect_cs: use the standard cs32 grid ; update output.
2147    o Added functionality to grdchk:
2148      pick global i,j,k position (or nearest wet) where to perform check.
2149    
2150    checkpoint52l_post
2151    o new land formulation:
2152      a) use ground enthalpy as prognostic variable to ensure exact
2153         energy conservation.
2154      b) account for water temperature and for latent heat of freezing
2155         in all processes (rain, run-off, ground storage)
2156      c) compute surface and ground temperature implicitly.
2157    o aim_v23 modification for new land model:
2158      a) Treat separately land / ocean / sea-ice surface fluxes
2159         to allow implicit computation of land & sea-ice surface temp.
2160      b) add snow precipitation.
2161    checkpoint52l_pre
2162    
2163    o fix problem (when 1 tile is empty) in min/max monitor.
2164    o fix bug in timeAve (u,vZetatave in common block)
2165    o no restoring terms under ice for pkg/seaice
2166    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
2167    o bug fix for pkg/seaice pickups
2168    o change MNC call locations and add coordinate attributes
2169    o mask vorticity at the corner ; affects global_ocean.cs output
2170    o fix ini_curvilinear_grid ; test CS experiments with mpi
2171    o aim.5l_cs: modify sea-ice fraction input file ; update output
2172    o exf: Adding simple range check routine for exf fields after read
2173    
2174    checkpoint52k_post
2175    o removed top-level directory "diags"
2176      - we migrated these functions to pkg/timeave a long time ago
2177    o fixed bug introduced in pkg/monitor
2178    o accuracy ctrlprec = 32 insuffient for gradient checks using
2179      averaged fields (I/O via cost_averages)
2180      -> use ctrl.h in active_file*.F to control I/O precision.
2181    o paramter list of CALL ADTHE_MAIN_LOOP
2182    o added initial do_the_model_io to ecco
2183    o set all ...Freq to zero after cost_final
2184      taveFreq, dumpFreq, pChkptFreq
2185    o MAIN and ECCO differentiability restored
2186    
2187    checkpoint52j_post
2188    o fix nchklev in tamc.h for global_ocean...
2189    o Bringing flow and store directives up-to-date
2190    o Really weird thing!
2191      call do_the_model_io from the_main_loop with parameters
2192      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
2193      TAF places a faulty re-call of initialise_varia
2194      after cost_final call which should not be there!
2195    checkpoint52j_pre
2196    
2197    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
2198      error messages
2199    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
2200    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
2201      debug output
2202    o modfied mdsio_writefield.F to handle non-global files under exch2
2203    o update AIM Cubed-Sphere exp (aim.5l_cs):
2204      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
2205    o update AIM Equatorial Channel exp:
2206      use standard aim_v23 pkg and change the SST fields to be more realistic.
2207    o globalFile now works with exch2
2208    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
2209      mon_vort3.F to make exch2 friendly with >1 tile per cube face
2210    o limit timeave output for hi-res integrations
2211    
2212    checkpoint52i_post
2213    o removed CPP_EEOPTIONS.h from verification/*/code
2214    o updated the tiling for global_ocean_pressure
2215    checkpoint52i_pre
2216    
2217    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
2218      the old pkg/aim).
2219    
2220    checkpoint52h_pre
2221    o shortened offending lines in exch2_send_rx?.template
2222    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
2223    o genmake2: add build & execute test for NetCDF code
2224    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
2225      old grid files, moved CPP_EEMACROS.h to pkg/exch2
2226    o added useSingleCPUIO flag to monitor.F and mon_out.F
2227    o added temporary hack for sea-ice dynamics on the cube:
2228      metric terms are ignored and it is assumed that
2229      there is no sea-ice on cube faces 1, 2, 4, and 5.
2230    
2231    checkpoint52f_post
2232    o added exch2 cube routines to pkg/exch2
2233    o modified hs94.cs-32x32x5 to use it
2234    o added new grid files to hs94.cs-32x32x5
2235    checkpoint52f_pre
2236    
2237    checkpoint52e_post
2238    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
2239      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
2240    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
2241      to work with implicit vertical advection and AB ;
2242    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
2243    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
2244     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
2245    checkpoint52e_pre
2246    
2247    o fix bug in impldiff when Nr=1 or Nr=2.
2248    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
2249    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
2250    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
2251      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
2252    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
2253    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
2254    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
2255    
2256    checkpoint52d_post
2257    o re-tiled many expts to allow comparison in multi-processor mode
2258      - updated output accordingly
2259      - changed hs94.128x64x5 to use intial T from file rather than use the
2260        random number generator
2261    o add infrastructure in model routines for fizhi and gridalt packages
2262    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
2263    o changes to permit hi-res, cubed-sphere, configuration
2264      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
2265      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
2266      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
2267        of surface winds for the cube
2268      (A verification experiment, based on global_ocean.cs32x15, but with
2269       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
2270       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
2271       complete with example surface forcing files and matlab scripts to look
2272       at the output and compare it with that of global_ocean.cs32x15.)
2273    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
2274       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
2275       to conform to the common rule.
2276    o check-in the first version of the coupler + interfaces for multi-components
2277       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
2278       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
2279       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
2280       - ocean and atmos. share the same horizontal grid (no interpolation).
2281       - exchanges between component and coupler is done in forward_step
2282    o new verification experiment, cpl_aim+ocn:
2283       coupled ocean - AIM atmosphere on cs32 grid.
2284    
2285    checkpoint52d_pre
2286    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
2287    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
2288    
2289    checkpoint52c_post
2290    o Fixing OPTIONS files for use of exf:
2291      - ALLOW_ECCO not needed
2292      - ECCO_CPPOPTIONS.h should not be included from
2293        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
2294        as has been the case in the past
2295      - All cal/exf related options are currently set in
2296        single header file. Should remain so until we
2297        agree on a consistent new policy.
2298    o Removed all CPP options for cal package.
2299      cal has no more CPP options.
2300    o modified STOREs in GAD_ADVECTION
2301    o corrected key comp. for passkey
2302    
2303    checkpoint52b_post
2304    o new version: "thsice" of thermodynamic sea-ice pkg:
2305     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
2306     - modify fluxes but do not change theta directly;
2307     - light cleaning of bulk_force pkg (still needed with thsice).
2308     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
2309       + output_thsice.txt to test thsice & bulk_force pkgs.
2310    o put back grid & coriolis monitor output.
2311    checkpoint52b_pre
2312    
2313    o call "do_the_model_io" at the beginning (=> dump initial state)
2314    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
2315    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
2316      (need info on NUMBER_OF_PTRACERS)
2317    o missing PTRACERS headers in some routines
2318    o default tamc.h in pkg/autodiff supposed to crash
2319      to ensure proper customization
2320    
2321    checkpoint52a_post
2322    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
2323      - moved surfaceTendencyTice from pkg/seaice to main code
2324      - subroutine FREEZE_SURFACE now limits only surface temperature
2325        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
2326        => new output.txt for global_ocean.cs32x15 & global_with_exf
2327      - keep the old version of FREEZE for backward compatibility;
2328        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
2329      - corresponding modifs for TAF directives
2330    o added surface flux output variables to TIMEAVE_STATVARS
2331    o time-averaged output for pkg/ptracers
2332    o fix problem with ECCO-related divided adjoint
2333      snapshot file was missing some ad-variables,
2334      but no warning issued by TAF
2335    
2336    checkpoint52a_pre
2337    o some bug fixes for #undef REAL4_IS_SLOW
2338    
2339    checkpoint52 = ecco_c52_e35
2340    o after testing adjoints of checkpoint51u_post
2341    
2342    checkpoint51u_post
2343    o this is the post-merge tag of the ecco-branch
2344      (needs another clean checkout and re-testing)
2345    o various natl_box_adjoint configs and results
2346      but no input fields
2347    o obcs adjoint not yet merged!
2348    o adding ECCO global 1x1 and 2x2 degree configs
2349    o updated/extended some store directives for seaice
2350    o pkg/ecco now containes ecco-specific part of cost function
2351    o top level routines the_main_loop, forward_step
2352      supersede those in model/src/
2353      previous input data.cost now in data.ecco
2354      (new namelist ecco_cost_nml)
2355    o in ctrl/ cleaned some cross-dependencies and updated CPP options
2356    
2357    checkpoint51t_post
2358    o this is the pre-merge tag of the ecco-branch
2359    
2360    checkpoint51s_post
2361    o cleanup: removed various obsolete #define-s
2362    o pkg/grdchk
2363      - renamed 'ph-grd 3' to 'grad-res'
2364      - merged from ecco-branch
2365        (remaining bug fixes for obcs gradient checks)
2366      - additional high-precision output for testreport
2367        (grep for 'precision_grdchk_result')
2368    
2369    checkpoint51r_post
2370    o cleaned up or removed CPP_OPTIONS.h files
2371    o updated results for some of the tests to reflect the new
2372      optfiles (-ieee: -O0 instead of -O3)
2373    
2374    checkpoint51q_post
2375    o cd_code:
2376      - moved cd_scheme.F -> cd_code_scheme.F
2377      - separate read_checkpoint from cd_code_ini_vars.F
2378      - separated cd_code part from write_checkpoint
2379      - updated AD_SOURCE, generated .flow
2380      - added CD_CODE_VARS.h to the_main_loop
2381      - Moving cd_code specific store dir.s to pkg/cd_code
2382    o ctrl package totally restructured
2383      - pack/unpack now optional and decoupled from
2384        xx_/adxx_ I/O
2385      - ctrl_pack/unpack cleaned
2386        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
2387      - confined inclusion of AD_CONFIG.h to where necessary.
2388    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
2389    
2390    checkpoint51p_post
2391    o create initial cd_code package
2392      - WARNING: the initialization of fields within packages
2393        is broken because INI_FIELDS (where READ_CHECKPOINT is
2394        called) is called *before* PACKAGES_INIT_VARIABLES.
2395        This seems to be backwards since
2396        1) its important to initially zero the entire field including
2397           the "halo" region
2398        2) zeroing needs to be done *before* reading pickup info
2399           and the pickup call might or might not happen in any
2400           particular run
2401      - this needs an overhaul for R2
2402    o cleanup verification/*/code/GMREDI_OPTIONS.h
2403    o cleanup testreport
2404    
2405    checkpoint51o_post
2406    o bringing AD-related verif's up to date with genmake2
2407      - carbon/
2408      - global_ocean.90x40x15/
2409      - hs.94.1x64x5/
2410      - (front_relax/ )
2411    o (more) consistent directory structure for AD-related verif.'s
2412    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
2413    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
2414    o bug fix in find_alpha.F for MDJWF:
2415      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
2416        change rho -> rho-rhoConst
2417      - replace call find_rho to find_rhonum
2418    o initialisation of rFlx extended to full array (required by TAF)
2419      and shifted to thermodynamics
2420    o removed PTRACERS.h in ptracers routine
2421    o added surfacetendencyPtr to S/R parameter list pracers_forcing
2422    o Correcting initialisations for fVerU, fVerV.
2423    o helping TAF to recognize dependency on kUp for
2424      fVerU, fVerV
2425    o Replacing delZ by delR in pkg/ctrl/
2426    checkpoint51o_pre
2427    
2428    o undid all of cp51 pending some cleanups and discussion
2429    o added the [#include "AD_CONFIG.h"] statement to all files that need
2430       it for adjoint/tl #defines
2431     o re-worked the build logic in genmake2 to support AD_CONFIG.h
2432     o removed tools/genmake since it no longer works
2433    
2434    checkpoint51n_post
2435    o modifications to make FREEZE flux visible to pkg/kpp
2436      - moved surfaceTendencyTice from pkg/seaice to main code
2437      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
2438      - subroutine FREEZE now limits only surface temperature
2439        (this means new output.txt for global_ocean.90x40x15,
2440         global_ocean.cs32x15, and global_with_exf)
2441    o added surface flux output variables to TIMEAVE_STATVARS
2442    
2443    checkpoint51n_pre
2444    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
2445    o added [#include "AD_CONFIG.h"] to all files that use the following
2446      defines:
2447      - ALLOW_ADJOINT_RUN
2448      - ALLOW_TANGENTLINEAR_RUN
2449      - ALLOW_ECCO_OPTIMIZATION
2450    
2451    checkpoint51m_post
2452    o incorporating changes to get TAMC/TAF working in genmake2
2453      - added new TAMC/TAF targets to the Makefile
2454      - various cleanups related to package handling
2455      - these changes should have no impact on the forward model
2456    
2457    checkpoint51l_post
2458    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
2459     - faster algorithm for cal_addtime.F
2460     - higher precision arithmetic, where needed
2461     - pkg/exf *startdate variables changed from calendar date to
2462       model integration time
2463    
2464    checkpoint51l_pre
2465    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
2466    o enable to apply restoring on S & T only in a latitude band.
2467    o update output (external_forcing_surf modif. change truncation errors)
2468       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
2469    
2470    checkpoint51k_post
2471    o change default to: useNHMTerms=.FALSE.
2472     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
2473       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
2474     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
2475        exp1, ideal_2D_oce
2476     - change data file of oceanic exp (leave the results unchanged for now)
2477       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
2478    o set gravitySign automatically according to the vertical coordinate used
2479      (and change sign: back to "logical" value: +1 when R increases downward)
2480    o added an include barrier to the default CPP_OPTIONS.h and
2481      removed the #include "PACKAGES_CONFIG.h" from it
2482    o fix a bug in mom_fluxform (from chk51j_post)
2483    
2484    checkpoint51j_post
2485    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
2486    o adjusted some flow directives (dynamics, thermodynamics)
2487    o added cubed-sphere case to test cost function
2488    o heckpoint_lev?_directives.h now include
2489      pkg-specific directives, whenever those are enabled.
2490    o Moving pkg-specific flow directives to corresponding pkg
2491      Moving pkg-specific differentiation list to corresponding pkg
2492      Moving pkg-specific checkpoint-lev storing to corresponding pkg
2493      ---> conventions are
2494           - pkg_ad.flow
2495           - pkg_ad_diff.list
2496           - pkg_ad_check_lev?_dir.h
2497    
2498    checkpoint51i_post
2499    o merge of the branch-genmake2
2500      - knowingly breaks the older genmake
2501      - automatic generation of all ALLOW_${PKG_NAME} defines
2502      - new testreport supersedes older testscript
2503    o large number of package inclusion and header cleanups
2504    checkpoint51i_pre
2505    
2506    o new output for adjoin of global ocean vector invariant
2507    o fix for checkpoint of thermodynamic seaice and bulk_force
2508    o Steph gchem various cleanups
2509    
2510    checkpoint 51h_pre
2511    o fixed some single quotes
2512    o modify gchem pkg to be more versatile
2513    o modifications to clean up dic pkg
2514    o add pkg/cfc
2515    
2516    checkpoint51g_post
2517    o provide links for ARPACK and ADM*TLM
2518    o start removing verification/vero/
2519    o update AD-related stuff
2520      (in particular some IF-statements in model/src/ routines)
2521    o adding to verification/global_ocean.90x40x15/ adjoint of
2522      vector invariant setup
2523    
2524    checkpoint51f_post
2525    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
2526    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
2527      of tracer Green's fucntions for ocean inversion project.
2528    
2529    checkpoint51f_pre
2530    o Added on-the-fly spatial interpolation capability
2531        "USE_EXF_INTERPOLATION" to pkg/exf.
2532      - This is a temporary Cartesian-grid hack until
2533        the super-duper ESMF coupler becomes available.
2534      - See verification/global_with_exf/README for usage example.
2535      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
2536        flags and modified pkg/seaice accordingly.
2537    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
2538        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
2539        non-local transport term.
2540    
2541    checkpoint51e_post
2542    o pkg/mom_vecinv:
2543      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
2544      - add time-ave diagnostic of vorticity advection.
2545    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
2546    o atmospheric geopotential: - include water vapor effect;
2547                                - use p^kappa in p* scaling.
2548    o land pkg: read initial state from files.
2549    o AIM : add stratospheric drag in the upper level
2550    
2551    checkpoint51d_post
2552    o change function ILNBLNK (=> last non-blank char.) to return zero
2553      (instead of the string length) when the string. char is empty
2554    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
2555    o modif's to restore TAMC compatibility
2556      - avoid "_d" constructs in PARAMETER declarations
2557      - avoid interrupting lines by comment lines
2558    o Use cluster local disks for purely local I/O
2559      vs. globally visible disks needed for ctrl stuff
2560      (merged from ecco-branch)
2561      - new active_file_loc... and mdsio_..._loc routines
2562      - affected packages: autodiff, ctrl, grdchk, mdsio
2563    
2564    checkpoint51c_post
2565    o introducing integer flag debugLevel
2566      - debLevZero: suppress all output
2567      - debLevA: standard
2568      - debLevB: equivalent to current debugMode=.TRUE.
2569    o introducing pathname variable mdsioLocalDir for mdsio
2570      that can be specified at runtime
2571      (relevant for cluster I/O to local disk)
2572    `
2573    >>>checkpoint51b_post
2574    adjoint of ptracers
2575    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
2576    o extended state in checkpoint_lev?, etc.
2577    o alternative ctrl/cost with tr1 or ptracer
2578    o new comlev1_bibj_ptracers
2579    o new ptracers.flow
2580    o made ptracers_forcing same as external_forcing_s
2581    o added verification for adjoint with ptracers
2582      - adm. grdchk fail so far
2583      - tlm. grdchk OK
2584      - checked tapelev/comlev recomputations: OK
2585    <<<checkpoint51b_pre
2586    
2587    checkpoint51a_post
2588    o added code for biogeochemistry package
2589      - new pkgs: dic, gchem
2590      - new subroutine in ptracers
2591    o modify code for biogeo packages
2592      - in model/src and pkg/ptracers
2593    
2594    checkpoint51
2595    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
2596      - autodiff, ctrl, exf, grdchk, seaice
2597      kept separate packages
2598      - cost, ecco, obcs
2599    o updating verification/internal_wave, verification/lab_sea
2600      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
2601    
2602    checkpoint50i_post
2603    o Preparing next differentiable checkpoint and sync
2604      of MAIN vs. ecco-branch
2605      - 1st step: this one is differentiable
2606      - 2nd step: next(! not this) checkpoint will have updated packages
2607                  from ecco-branch)
2608    
2609    checkpoint50h_post
2610    o new package "land": provide surface BC for AIM.
2611    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
2612    o AIM: use true log-P extrapolation for near surface temp (= as in
2613        F.Molteni paper) ; update aim.5l_cs output.
2614    o New variable in PARM03 for more flexible pickups
2615    o somewhat cleaned package initialisation sequence for
2616      ctrl/ cost/ ecco/ in packages_... routines
2617    
2618    checkpoint50g_post
2619    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
2620      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
2621      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
2622        made the default because of faster convergence than ADI
2623    
2624    checkpoint50f_post
2625    o exf totally restructured
2626      - replaced all exf_set_ routines by one generic exf_set_gen.F
2627        and made sure it's still differentiable
2628      - split exf_getffields.F into new exf_bulkformulae.F
2629      - exf_inscal_/exf_outscal_ suffixes consistent with field names
2630      - updated adjoint/makefile and relevant verif. accordingly
2631    
2632    checkpoint50f_pre
2633     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
2634          + change Evap over land. (update aim.5l_cs output)
2635     o added missing .cvsignores and made uniform across expts
2636     o changed configuration of tidal_basin_2d expt
2637     o added pkg/debug functions for tracing code in fatal crashes
2638     o tidied pkg/monitor to use MONITOR_OPTIONS.h
2639     o new fn in pkg/monitor to stop model if solution grows too big
2640     o removed lots of single quotes from comments
2641    
2642    checkpoint50e_post
2643    o make KPP work with PTRACERS
2644     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
2645       nearly a copy of kpp_transport_s
2646     - there is no analogue to SurfaceTendencyS, so I have to use
2647       gPtr(of the surface layer) instead
2648    o add a new platform SunFire+mpi (SunFire 15000) to genmake
2649    checkpoint50e_pre
2650    
2651    checkpoint50d_post
2652    o change kpp output from multiple-record state files to single-record state
2653      files analogous to write_state.F
2654    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
2655      analogous to the cg2d-related output.
2656    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
2657      so that writing to internal file fn (with length 512) fails.
2658    checkpoint50d_pre
2659    
2660    checkpoint50c_post
2661    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
2662    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
2663    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
2664    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
2665    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
2666    
2667    checkpoint50c_pre
2668    Merging from release1_p13:
2669    o bug fix for pkg/seaice dynamic solver
2670    o Added SEAICE_initialHEFF to pkg/seaice
2671    
2672    checkpoint50b_post
2673    o store u*,v* in gU,V instead of in guNm1,gvNm1
2674    o in order to put the momForcing out of the Adams-Bashforth:
2675      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
2676      to timestep.F
2677    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
2678    o re-generate output for highly sensitive test-exp:
2679       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
2680    
2681    checkpoint50b_pre
2682    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
2683    o corrected CPP option mismatch in exf_Bulk... functions for case
2684      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
2685    
2686    checkpoint50a_post
2687    o Bug fix for merging between c50 and KPP.
2688      ikey was passed from thermodynamics to kpp_calc via
2689      common block rather than being recomputed in kpp_calc,
2690      in contradiction with new key itdkey.
2691      New key ikppkey created, and tamc.h headers updated.
2692    
2693    checkpoint50
2694    - 2nd step of merge with ecco-branch:
2695      merge changes in ecco-branch back into main trunk
2696    - bug fix in find_alpha
2697    - more storing in gmredi_calc_tensor.F, kpp_routines.F
2698    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
2699    - merged some sliced AD support routines
2700    
2701    checkpoint49
2702    merged from ecco-branch:
2703    o exf:
2704      - Enable initialisation of forcing fields to constant
2705        (runtime) values.
2706      - in exf_getffields.F
2707        Reduce i-/j-loop to interior domain, discarding overlaps.
2708        That also fixes wrong TAF-key computations for key_1, key_2
2709        with bulf formulae.
2710      - exf_init.F modify #ifdef for exf_init_evap
2711      - exf_getffieldrec.F, ctrl_getrec.F
2712        The following INT-usages are not safe:
2713          fldsecs  = int(fldsecs/fldperiod)*fldperiod
2714          fldcount = int(fldsecs/fldperiod) + 1
2715        and were modified.
2716    o autodiff: checkpoint_lev...
2717      - updated storing for bulk formulae (some arrays were missing)
2718      - added state for seaice package
2719      - synchronized with main branch
2720    o DIVA:
2721      Modif.s in
2722      - the_main_loop.F
2723      - the_model_main.F
2724      and added cost_final_restore.F cost_final_store.F
2725      o With these changes, it is possible to fully separate
2726        the first forward run to compute the cost function (mdthe_main_loop)
2727        and adjoint runs over individual DIVA intervals (adthe_main_loop)
2728        into separate model executions.
2729        This enables better tuning of DIVA to given queue sizes.
2730      o Loss of cost function value in consecutive DIVA runs is
2731        fixed by storing to 'costfinal' file.
2732      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
2733        beginning/end of adjoint integration is accounted for.
2734      The current changes apply to TAF-1.4.26.
2735      TAF has one remaining bug, requiring one manual change
2736      (see MITgcm manual).
2737    o cal: synchronized between MAIN and ecco-branch
2738    
2739    checkpoint48i_post
2740    o Changes to restore differentiability of code w.r.t. previous tag
2741      (mostly adding new routines to make list and replacing
2742      pressure by totPhiHyd).
2743    o Updated and merged grdchk package
2744      - has both ADM and TLM checks
2745      - works for single- and multi-proc.
2746      - output cleaned
2747      - worked successfully for parallel DIVA
2748    o genmake:
2749      - Adding -platform=SP4
2750      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
2751    o Modif. for DIVA:
2752      ctrl_unpack should not be called in intermediate DIVA interval.
2753      (similar thing would apply for active files such as
2754      tbar, sbar, psbar, which should not be reinitialised;
2755      only relevant for ecco-branch)
2756    
2757    checkpoint48h_post
2758    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
2759    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
2760    o Added SEAICE_initialHEFF to pkg/seaice
2761    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
2762    
2763    checkpoint48g_post
2764    --- EOS:
2765    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
2766      store total Potential in totPhyHyd for diagnostics & EOS.
2767    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
2768    --- Pressure/geopotential gradient:
2769    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
2770    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
2771      ( changes results of global_ocean_pressure )
2772    o NLFS + z-coord.: add eta*Rho' contribution.
2773    o accurate phiHyd when using interface-W at the middle between 2 centers
2774     ( changes results of ideal_2D_oce )
2775    o includes r* 2nd term in potential gradient.
2776    
2777    checkpoint48f_post
2778    Merging from release1_p12:
2779    o Modifications for using pkg/exf with pkg/seaice
2780      - improved description of the various forcing configurations
2781      - added basic radiation bulk formulae to pkg/exf
2782      - units/sign fix for evap computation in exf_getffields.F
2783      - updated verification/global_with_exf/results/output.txt
2784    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
2785      (SBO) core products, including oceanic mass, center-of-mass,
2786      angular, and bottom pressure (see pkg/sbo/README.sbo).
2787    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
2788      to avoid negative values in shallow regions.
2789      - updated verification/natl_box/results/output.txt
2790      - updated verification/lab_sea/results/output.txt
2791    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
2792    o Added useSingleCpuIO option (see PARAMS.h).
2793    o Updated useSingleCpuIO option in mdsio_writefield.F to
2794      work with multi-field files, e.g., for single-file pickup.
2795    o pkg/seaice:
2796      - bug fix in growth.F: QNET for no shortwave case
2797      - added HeffFile for specifying initial sea-ice thickness
2798      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
2799    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
2800      kpp_transport_t.F, forward_step.F, and the_main_loop.F
2801    o pkg/seaice:
2802      - adjoint-friendly modifications
2803      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
2804    
2805    checkpoint48e_post
2806    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
2807    o dynamics: change definition of computational domain & adapt mom_fluxform
2808      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
2809    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
2810        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
2811        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
2812        global_ocean.90x40x15 global_with_exf global_ocean_pressure
2813        inverted_barometer solid-body.cs-32x32x1
2814      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
2815    
2816    checkpoint48d_post
2817    o in preparation for r*:
2818     a) use pre-computed gradient of hydrostatic potential:
2819        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
2820     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
2821        => affects results of glob_oce_pressure (different truncation error)  
2822      update output.txt of ideal_2D_oce & global_ocean_pressure
2823    
2824    checkpoint48d_pre
2825    o in preparation for r*:
2826      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
2827      pass the 2 comp. of the grad. as arguments to momentum S/R.
2828      but for the moment, only used if it does not change the results.
2829    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
2830    
2831    checkpoint48c_post
2832    Modifications in treatment of initial flux forcing controls
2833    to avoid extra storing of flux fields.
2834    
2835    checkpoint48c_pre
2836    o Added tidal_basin_2d experiment (currently 1D!)
2837    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
2838    
2839    checkpoint48b_post
2840    o r* coordinate added in #ifdef NONLIN_FRSURF block.
2841     (modification to pressure gradient not yet implemented)
2842    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
2843      (for U & V) that are used for vertical advection of momentum.
2844    
2845    checkpoint48a_post
2846    o In preparation for r*, use temp. array to compute vertical transport
2847       in flux-form momentum pkg. => change results of few test-exp.
2848      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
2849                        lab_sea, natl_box & plume_on_slope
2850    
2851    checkpoint48
2852    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
2853    
2854    checkpoint47j_post
2855    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
2856    o moved adexch from forward_step to addummy_in_stepping
2857    o added exch in ctrl_map_...
2858    o aveFreq.=0. at end of cost_final to avoid overwrite in
2859      reverse checkpointing loop
2860    o Yet more changes in gmredi:
2861      * adgmredi_calc_tensor
2862        avoiding all recomputation of gmredi_slope_limit
2863      * adgmredi_x/y/rtransport
2864        added flag for excessive storing to avoid recomp. of
2865        u/v/rtans, dTdx/y/z
2866        -> this is not really necessary and very memory-consuming
2867      * adgmredi_slope_psi:
2868        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
2869      * gmredi_slope_limit
2870        re-activated full calculation of taperfct for case 'ac02'
2871    o updating verification/ adjoints of carbon, global_ocean.90x40x15
2872    
2873    checkpoint47i_post
2874    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
2875    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
2876      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
2877    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
2878    o gmredi: fix few bugs.
2879    
2880    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
2881    This will be a good checkpoint to plug into the ecco-branch.
2882    o few modif.'s to get latest version adjointed
2883      (mainly kick out code in ini_linear_phisurf)
2884    o modif's to run adjoint with exactConserv
2885    o case GM_BOLUS_ADVEC should be cleaned
2886      S/R gmredi_slope_psi should be cleaned
2887    o verification/carbon now has exactConserv=.TRUE.
2888    
2889    checkpoint47g_post
2890    o time-average AIM output: becomes independent from statvars time-average
2891      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
2892    o After TAF bug fix:
2893      Tested adjoint of gmredi package.
2894      Tests were done with checkpoint47 rather than with latest
2895      checkpoint47f_post since the latter is broken for the adjoint
2896      verification/carbon/ contains both ADM and TLM gradient checks.
2897    Here they are, before they get changed/lost/stolen.
2898    Mostly modif.'s to fix numerical sensitivities.
2899    Gradient checks OK for
2900    - GM_taper_scheme:
2901      * clipping
2902      * ac02
2903      * linear
2904      * glw91
2905      * dm95
2906      * ldd97
2907    - GMREDI_OPTIONS:
2908      * GM_VISBECK_VARIABLE_K
2909      * GM_NON_UNITY_DIAGONAL
2910      * GM_EXTRA_DIAGONAL
2911      * GM_BOLUS_ADVEC
2912    in conjunction with data.gmredi parameters to be checked in
2913    in a few minutes under verification/carbon/code/
2914    
2915    checkpoint47f_post
2916    Merging from release1_p10:
2917    o modifications for using pkg/exf with pkg/seaice
2918      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
2919        and SEAICE_EXTERNAL_FLUXES
2920      - pkg/exf CPP options EXF_READ_EVAP and
2921        EXF_NO_BULK_COMPUTATIONS
2922      - usage examples are Experiments 8 and 9 in
2923        verification/lab_sea/README
2924      - verification/lab_sea default experiment now uses
2925        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
2926    
2927    checkpoint47e_post
2928    o created a tag prior to creating a branch
2929    
2930    checkpoint47d_post
2931    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
2932      at the bottom boundary had an erroneous half slip boundary condition
2933    o added bottom drag and no slip boundary condition capabilities to
2934      oceanic pressure coordinates code
2935    o added new verification experiment global_ocean_pressure, this experiment is
2936      also described in the tutorial section of the manual
2937    checkpoint47d_pre
2938    
2939    checkpoint47c_post
2940    o Added a verification experiment for a global cubed-sphere ocean run
2941      -  verification/global_ocean.cubed32x32x30
2942      -  uses pkg/therm_seaice and pkg/bulk_forcing
2943    
2944    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
2945    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
2946      when using P-coordinate; only implemented for atmospheric config.
2947    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
2948      NOTES: requires option NONLIN_FRSURF to be "#define".
2949    o update advect_xz/results/output.txt (left from checkpoint44g_post)
2950    
2951    checkpoint47b_post
2952    Merging from release1_p9:
2953    o pkg/seaice
2954      - removed GOTO's and added taf directives
2955      - double precision constants to reduce the g77 (Linux)
2956        to F77 (SGI) differences reported in release1_p8
2957    o tools/genmake
2958      - added SGI options
2959    o verification/testscript
2960      - updated to that of checkpoint47a_post
2961    o verification/global_ocean.90x40x15/input/eedata
2962      - modified for SGI f77 compatibility
2963    o verification/lab_sea
2964      - added description of sea-ice model
2965      - added missing matlab routines
2966      - added test of thermodynamics parallelization
2967    
2968    checkpoint47a_post
2969    o new pkg: aim_v23
2970     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
2971       for now, keep the same surface forcing as before.
2972     - Part-Cell implemented into AIM; check that Heat & Water are conserved
2973     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
2974     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
2975    o add diagnostic of surface correction term in monitor output
2976    
2977    o bulk_force and therm_seaice
2978    - Two packages:  bulk_force (Bulk forcing)
2979      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
2980    - Earlier integration from Stephaine Dutkiewicz
2981      and Patrick Heimbach.
2982    - Two ifdef statements for compile time,
2983       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
2984    
2985    checkpoint47
2986    differentiable version of checkpoint46n_post
2987    o bug fix in quasihydrostaticterms
2988    o * "clean" adjoint code (in terms of extensive recomputations)
2989        can now be obtained for all GMREDI options (i.e. for
2990        - GM_VISBECK_VARIABLE_K
2991        - GM_NON_UNITY_DIAGONAL
2992        - GM_EXTRA_DIAGONAL
2993        - GM_BOLUS_ADVEC )
2994      * However, wrong gradient check problem remains unsolved.
2995      * New CPP options have been introduced for different
2996        tapering schemes
2997    o external_fields_load now part of differentiation list
2998    o pressure needs multiple storing;
2999      would be nice to have store_pressure at beginning or
3000      end of forward_step, e.g. by having phiHyd global (5-dim.)
3001      (NB: pressure is needed for certain cases in find_rho,
3002      which is also invoked through convective_adjustment).
3003    o recomputations in find_rho for cases
3004     'JMD95'/'UNESCO' or 'MDJWF' are OK.
3005    o #define ATMOSPHERIC_LOADING should be differentiable
3006    o ini_forcing shifted to begining of initialise_varia
3007    o Incorporating QNVS line search routines into MITgcm
3008      (this is separate code, and therefore not under pkg)
3009      lsopt/, optim/
3010    o Updated verification/carbon/
3011      - #define GM_VISBECK_VARIABLE_K
3012      - GM_taper_scheme    = 'ldd97'    
3013    
3014    checkpoint46n_post
3015    Merging from release1_p8:
3016    o verification/natl_box:
3017      updating new external_fields_load routine
3018    o New package: pkg/seaice
3019      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
3020      The sea-ice code is based on Hibler (1979-1980).
3021      Two sea-ice dynamic solvers, ADI and LSR, are included.
3022      In addition to computing prognostic sea-ice variables and diagnosing
3023      the forcing/external data fields that drive the ocean model,
3024      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
3025      The implied surface heat flux is then stored in variable
3026      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
3027      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
3028      non-local transport term.  Because this call precedes model
3029      thermodynamics, temperature under sea-ice may not be "exactly" at
3030      the freezing point by the time theta is dumped or time-averaged.
3031      N.B.: fairly large differences in accuracy occur across
3032            different platforms/compilers; comparison between
3033            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
3034            generated output gives:
3035       T           S           U           V
3036      C D M    c        m  s        m  s        m  s        m  s
3037      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
3038      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
3039      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
3040    
3041      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
3042    o GAD:
3043      - generated new common blocks to account for call of
3044        same gad routines with differing traceridentities
3045        (needed to modify tracerIdentity indices in GAD.h)
3046      - generated separate common blocks for case useCubedSphereExchange
3047        (Department of Futurology)
3048      - parameter lists to gmredi_?transport: added tracerIdentity
3049      - added new key indices to tamc.h
3050    o external_fields_load:
3051      - added this routine to TAF list
3052      - needed to make some common blocks global and additional storing
3053        along the same lines as exf package (checkpoint_lev?_directives.h)
3054    o exf:
3055      updated external forcing package
3056      - bug fixes carried over from ecco-branch
3057        (missing OBCS_OPTIONS.h in two routines)
3058      - enable easy to use "no forcing".
3059      - added exf I/O for atmospheric loading
3060      - added exf I/O for runoff data
3061      - transfered scaling between exf <-> MITgcm to exf namelist
3062    o Adding new verification experiment global_with_exf.
3063      This verification experiment is almost identical to the
3064      global_ocean.90x40x15 experiment, except that it uses
3065      the exf (and cal) package instead of the
3066      external_fields_load routine (cf README file).
3067    
3068    checkpoint46m_post
3069    o modified testscript to return -- when there are no lines of "%MON" output
3070    o added new flag "quasiHydrostatic" for QH mode
3071      and new routine quasihydrostaticterms()
3072    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
3073      New routine: mom_u_coriolis_nh()
3074    o fixed sign of non-hydrostatic metric terms in u and v equations.
3075      Depend on correct sign of gravitySign.
3076    o added work.pc* to .cvsignore in aim directories using ifc
3077    o introduced flag for controllin non-hydrostatic metric terms
3078    o removed gravitySign from PARM04
3079    o switched to g77/ifc from pgf77 in aim experiments
3080    
3081    checkpoint46l_post
3082    o made convective adjustment work with pressure coordinates:
3083     - changed the direction of k-loop in convective_adjustment.F for the
3084       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
3085     - adjusted the reference pressure k-index in convective_adjustment.F
3086     - adjusted the convection condition in convect.F (in analogy to
3087       calc_ivdc.F)
3088     - convective_adjustment no longer computes anything on the halos
3089     - removed the warnings about negative salinity from find_rho.F and
3090       find_alpha.F; instead the new routine look_for_neg_salinity, called
3091       at the beginning of find_rho, find_alpha, and find_beta, does a
3092       check of the entire slice, if CPP-option
3093       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
3094    checkpoint46l_pre
3095    
3096    checkpoint46k_post
3097    o fixed the verification/global_ocean.90x40x15 experiment:
3098     - new bathymetry (the world according to A., JMC, and M.)
3099     - new initial fields and forcing fields (*.bin files)
3100     - new POLY3.COEFFS (for the next release one should switch to a full
3101       equation of state: JMD95P or MDJWF)
3102     - fixed several errors and redundancies in the data file
3103     - experiment uses looped cells
3104     - added matlab directory with diagnostic scripts for plotting of output
3105    
3106    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
3107     - read AIM physics parameters from a file (data.aimphys)
3108     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
3109    
3110    checkpoint46j_post
3111    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
3112    o move wVel computation at the end of the time step, in S/R integr_continuity
3113    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
3114    o update timeave pkg for wVel diagnostic.
3115    checkpoint46j_pre
3116    
3117    checkpoint46i_post
3118    o Clean up AIM package (and keep the results unchanged):
3119      include CPP_OPTION and use IMPLICT NONE in all routines ;
3120      declare all the variables _RL ; use _d 0 for all numerical constants.
3121      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
3122    
3123    checkpoint46h_post
3124    o cleaned up the use of rhoNil and rhoConst.
3125      - rhoNil should only appear in the LINEAR equation of state, everywhere
3126        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
3127        and the dynamical equations are all divided by rhoConst
3128    o introduced new parameter rhoConstFresh, a reference density of fresh
3129      water, to remove the fresh water flux's dependence on rhoNil. The default
3130      value is 999.8 kg/m^3
3131    o cleanup up external_forcing.F and external_forcing_surf.F
3132      - can now be used by both OCEANIC and OCEANICP
3133    checkpoint46h_pre
3134    
3135     Added code to convert surface volume flux (fresh water) into
3136     a mass flux when using P coordinates in the ocean (OCEANICP).
3137     Note: It assumes you have set rho0=rhoConst=density of fresh water.
3138    
3139    checkpoint46g_post
3140    o Include a new diagnostic variable phiHydLow for the ocean model
3141      - in z-coordinates, it is the bottom pressure anomaly
3142      - in p-coordinates, it is the sea surface elevation
3143      - in both cases, these variable have global drift, reflecting the mass
3144        drift in z-coordinates and the volume drift in p-coordinates
3145      - included time averaging for phiHydLow, be aware of the drift!
3146    o depth-dependent computation of Bo_surf for pressure coordinates
3147      in the ocean (buoyancyRelation='OCEANICP')
3148      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
3149        Theta, Salinity, and Pressure in the parameter list. This routine is
3150        presently contained in find_rho.F. This routine does not give the
3151        correct density for 'POLY3', which would be a z-dependent reference
3152        density.
3153    o cleaned up find_rho
3154      - removed obsolete 'eqn' from the parameter list.
3155    o added two new verification experiments: gop and goz
3156      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
3157    checkpoint46g_pre
3158    
3159    checkpoint46f_post
3160    o Enable tangent linear (forward mode) gradient checks:
3161      - extended active file handling to g_... files
3162      - added TANGENT_SIMULATION to theSimulationMode
3163      - extended grdchk package accordingly
3164    o added tangent linear setup in verification/carbon/code_ftl
3165    o added adjoint setup in verification/front_relax/code_ad
3166    
3167    checkpoint46e_post
3168    o Added new equation of state -> MDJWF
3169      - EOS of McDougall et al., 2002, JAOT, submitted
3170      - caveat: the equation of state is only valid for a smaller (more
3171        realistic?) range of values than JMD95P/Z and UNESCO
3172      - added masks to the calculation of pressure in store_pressure
3173      - added more check values for density in check_eos (ini_eos.F), some of
3174        the old check values are out of the range of the MDJWF-eos, so don't
3175        expect perfect matches for those
3176    checkpoint46e_pre
3177    
3178    checkpoint46d_post
3179    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
3180      'OCEANICP', also initialised field pressure correctly in ini_eos in the
3181      case of pressure coordinates. eosType='JMD95Z' in
3182      combination with buoyancyRelation='OCEANICP' now causes an error.
3183    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
3184      in find_alpha/beta.
3185    checkpoint46d_pre
3186    
3187    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
3188      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
3189    
3190    checkpoint46c_post
3191    o Changes necessary for ocean in p-coordinates
3192     -  Added new buoyancy relation = 'OCEANICP'
3193     -  Added new parameters = gravitySign (this used to be contained inside
3194        the factor dRdZ which I added when we first switched to R coordinates).
3195     X GM/Redi is not compatible (yet)
3196     X bottom drag and no-slip need to be debugged.
3197    checkpoint46c_pre
3198    
3199    checkpoint46b_post
3200    o Added new equation of state -> JMD95Z and JMD95P
3201      - EOS of Jackett and McDougall, 1995, JAOT
3202      - moved all EOS parameters into EOS.h
3203      - new routines ini_eos.F, store_pressure.F
3204    o Added UNESCO EOS, but not recommended because it requires
3205      in-situ temperature (see JMD95)
3206    o Modified formatting for knudsen2.f in utils/knudsen2 and added
3207      unesco.f to be used with POLY3
3208    checkpoint46b_pre
3209    
3210    checkpoint46a_post
3211    o Added (atmospheric) pressure loading
3212      - new field in FFIELDS.h, etc...
3213      - new cpp flag ATMOSPHERIC_LOADING
3214    o Changed hFacC to _hFacC in calc_phi_hyd.F
3215    o Added SHORTWAVE_HEATING to some files for consistency
3216    checkpoint46a_pre
3217    
3218    checkpoint46
3219    further merges from release1_p5
3220    o new ctrl package
3221      - adopted from ECCO environment to enable optimization
3222      - added Eliassen Palm fluxes to controls
3223    o added Eliassen Palm flux controls to gradient check package
3224    o cost package
3225      - Compatible with new ctrl package
3226      - added Eliassen Palm cost hooks
3227      - modif's of existing cost functions
3228    o Adjoint-related bug fixes in kpp:
3229      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
3230      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
3231    o autodiff package
3232      - flow directives:
3233        + new for S/R do_the_model_io
3234        + enhanced for S/R checkpoint
3235        + new gmredi.flow
3236      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
3237        disable adcommon.h/g_common.h by default.
3238      - fixed problem for adjoint of global_max
3239    o modified verification/carbon/
3240    o New setup for adjoint of global_ocean
3241    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
3242    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
3243    o incorporated hooks for sponge layer code (external_forcing.F)
3244    
3245    checkpoint45d_post
3246    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
3247    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
3248      (affects plume_on_slope "cg2d" output)
3249    o add new parameter deltaTfreesurf for free-surface time stepping
3250    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
3251    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
3252    o change phiMin in exp1 (to agree with documentation)
3253    o add new flags:
3254     - T,S forcing inside/outside Adams-Bashforth
3255     - turn off temp,salt advection and/or forcing
3256     - for each tracer, define internal flag for multiDimAdvection & A-B
3257    o monitor: change definition of KE to check conservation of Energy
3258    
3259    checkpoint45c_post
3260    o Removed f90 comments ("!")
3261    o Modified initialisations to enable exf package for MITgcm
3262      (without invoking ECCO_PACKAGE).
3263    o modifications to gradient check package (Martin Losch)
3264      - enable centered differences
3265      - modified format of standard output
3266    
3267    checkpoint45b_post
3268    o cleaned exchange calls in cg2d
3269    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
3270    o included CPP option SINGLE_LAYER_MODE in thermodynamics
3271      to configure barotropic setup (Martin Losch)
3272    o moved some initialisations within bi,bj loop in dynamics
3273      (TAF flow dependency)
3274    o in initialise_varia, moved call packages_init_variables
3275      before convective_adjustment_init
3276      (corresponding adjustment of TAF tape initialisation).
3277    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
3278    
3279    checkpoint45a_post
3280    o compute Rho over the whole domain (extend iMin,jMin indices)
3281    o specific exchange for X-slice domain (case Ny=1)
3282    o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
3283    o solve_for_pressure : set cg2d_x to zero where OBCS are applied
3284    
3285    checkpoint44h_post = checkpoint45
3286    o Fix to restore differentiability:
3287      place at which packages_init_variables is called in
3288      initialise_varia is crucial for reverse control flow.
3289    o modifications in GMRedi to enable stable adjoint
3290      (corresponding modif's in thermodynamics, dynamics)
3291    o added missing hook for sponge layer code in external_forcing
3292    o modified test cost functions
3293    o storing in gad_advection (plus removal of write(0,*)!
3294    o missing headers TR1.h added in convective_adjustment routines
3295    o errorMessageUnit set non-equal zero in eeboot
3296      (conflict on some platforms, e.g. IBM SP3)
3297    o modified carbon verif.
3298    
3299    checkpoint44h_pre
3300    o vertical grid option: allow to put the Interface at the middle between
3301      2 cell-centers ; replace delZ in pkg/kpp by drF.
3302    o GM Advective form: Tracers are advected using the residual transport (=
3303      Euler+GM-bolus); set param GM_AdvSeparate=T to return to previous form.
3304    
3305    checkpoint44g_post
3306    o fix surface correction term in multiDimAdvection (affects plume_on_slope
3307      results) ; ifdef missing in thermodynamics.F
3308    
3309    checkpoint44f_pre,checkpoint44f_post
3310    o added PTRACERS package
3311      This allows an arbitrary number of passive tracers to be integrated
3312      forward simultaneously with the dynamicaly model.
3313      + Implemented so far:
3314        - basic forward algorithm (time-stepping, advection, diffusion, convection)
3315        - I/O and checkpointing
3316        - GM/Redi  *but*  using the GM/Redi coefficient of Salt
3317      + Not implemented so far:
3318        - KPP
3319        - OBCS
3320      + No specific example supplied (yet) but global_ocean.90x40x15 has the
3321        necessary data.ptracer file. Simply use -enable=ptracers and uncomment
3322        line in data.pkg.
3323      + This package is disabled by default since it increases storage.
3324    
3325    
3326    o testscript: added -cleanup option
3327    o Shap_filt: a) new shap_filt S/R to use no-slip BC with S2 filter
3328                 b) enable to filter 2D fields.
3329    
3330    checkpoint44e_pre,post
3331    o re-wrote convective adjustment to use pre-calculated weights
3332      Affects: model/src/convective_adjustment.F, convective_adjustment_ini.F
3333      Adds:    model/src/convective_weights.F, convectively_mixtracer.F
3334      Original calls to convect() still in place.
3335    
3336    chkpt44d_pre,post
3337    o added missing EXCLUDE_MONITOR flags
3338    o changed "e" to "_d" in gmredi_slope_limit, gmredi_slope_psi
3339      (incompatible typ in MIN/MAX expressions caused problems
3340      on IBM SP3)
3341    o in genmake added variable MAKEDEPEND
3342      plus resetting for case SunOS
3343    o added timer_stats.c routine for IBM SP3
3344    o removed variables in dynamics
3345    !!! I forgot to create tag chkpt44d_pre !!!
3346    !!! But chkpt44d_pre = chkpt44c_post    !!!
3347    
3348    o real fresh water flux implemented with non-linear free-surface.
3349    
3350    chkpt44c_pre,post
3351    o few fix (mask in shap_s2, EmPmR in external_field_load,
3352      USE_NATURAL_BCS in solve_for_P);
3353    o add arguments myIter & myTime to S/R obcs_calc & solve_for_P
3354    
3355    checkpoint44b_pre/_post
3356    o merge of relevant stuff from the ecco-branch:
3357      - genmake: removed $S64 overwrite for case SunOS
3358      - pkg/exf: update and corrections for field swapping and obcs
3359      - pkg/ecco: parameter lists for the_model_main, the_main_loop
3360                  harmonized between ECCO and MITgcm
3361      - pkg/autodiff: added flow directives for obcs, mdsio_gl_slice
3362                      updated checkpointing_lev... lists for obcs
3363      - model/src: minor changes in forward_step, plot_field
3364                   added directive for divided adjoint in the_main_loop
3365      - pkg/mdsio: added mdsio_gl_slice
3366    
3367    o check parameters & config (chkpt44a_pre,post)
3368    o OBC and NonLin_FrSurf.
3369    
3370    checkpoint44
3371    o fix bug in mom_vi_del2uv
3372    o select when filters are applied ; add options to zonal_filter (data.zonfilt)
3373    o gmredi: fix Pb in the adiabatic form ; add options (.e.g. Bolus advection)
3374    o update AIM experiments (NCEP input files)
3375    o improve and extend diagnostics (Monitor, TimeAve with NonLin-FrSurf)
3376    o added some stuff for AD
3377    
3378    checkpoint43
3379    o added two new advection tests
3380    o added global 4x4 degree ocean test
3381    o added test of H&S94 with free surface on cube
3382    o some final mods for gradient check, adjoint,...
3383    
3384    checkpoint42
3385      Fixed AD-related problems:
3386    o Store directives up-to-date with re-arranged Adams-Bashforth
3387      (mainly thermodynamics.F)
3388    o New store directives for multi-dim. advection schemes
3389      * new CPP flag ALLOW_MULTI_DIM_ADVECTION
3390      * new common block and key passkey
3391      (mainly gad_advection.F)
3392    o Modified store directives for split of dynamics/thermodynamics
3393      for the case ALLOW_KPP
3394    o Cleaned argument list for timestep_tracer.F
3395    
3396    checkpoint41
3397    o re-formatted/added comments in prologues of key subroutines
3398      to work with protex
3399    
3400    checkpoint40
3401    o moved calc_gs, calc_gt and calc_tr1 back to model/src
3402    o added FLT (floats) package from Arne along with demo. experiment
3403    o re-arranged Adams-Bashforth scheme for tracers to allow easier
3404      implementation of forward-in-time forcing terms
3405    o more mods for non-linear free-surface including new variable
3406    o modified multi-dim method to work on cube
3407    o bug fix in KPP (from DM)
3408    
3409    checkpoint40pre9
3410    o added DST advection schemes
3411    o fix MPI bug on SGI's
3412    o modifications for non-linear free-surface
3413    o fixed conditionals for fixed flow/passive tracer only mode
3414    o added tension/strain form of stress tensor
3415    o changes to commenting of arguments for TAF/TAMC
3416    o added/updated many matlab scripts
3417    o added multi-dimensional advection method for tracers
3418      
3419    checkpoint40pre8
3420    o new package rw/
3421      Added method for dumping intermediate local arrays:
3422      mdsio_writetile - same as mdsio_writefield except works from inside
3423                        bi,bj loop
3424      mdsio_writelocal - same as mdsio_writetile except works for local
3425                         arrays
3426      write_local_r? - higher-level wrapper for mdsio_writelocal
3427      Controlled by diagFreq. Defaults to zero (ie. no dumps)
3428      Example given at end of mom_vecinv.F that dumps some local arrays.
3429    o replaced calc_mom_rhs.F by mom_fluxform.F/mom_vecinc.F to
3430      control flux-form versus vector invariant code.
3431      Switch is runtime flag vectorInvariantMomentum (defaults to false)
3432      or genmake -DISABLE ...
3433    o TAMC-related update to cope with mom_fluxform.F/mom_vecinc.F
3434      (additional storing is now needed for case vecinv;
3435      currently nothing implemented to switch this storing off
3436      in case fluxform is used since no CPP flag available).
3437    
3438    checkpoint40pre7
3439    o bug fix in dynamics.F
3440      calc_viscosity called before k=1,Nr loop.
3441    o added some #ifdef's ALLOW_PASSIVE_TRACER
3442    o cleaned initialisations in ctrl_map_ini
3443      related to TAF
3444    
3445    checkpoint40pre6
3446    o split dynamics into thermodynamics & dynamics
3447    o corresponding split of calc_diffusivity into
3448      calc_diffusivity, calc_viscosity
3449      (kpp_calc_diff, kpp_calc_visc).
3450    o Added diffkr, kapgm to control variables
3451    o bug fix in gmredi_slope_limit for ldd97
3452    
3453    checkpoint40pre5
3454    o proper initialization of Adams-Bashforth time stepping
3455      + uses forward step for very first step of model (iter=0)
3456    o re-generated *all* output since almost all output is modified by this
3457      change (sorry but we've been putting this one off for about 2 years)
3458      + natl_box, aim.5l_Equatorial_Channel and aim.5l_zon-ave were
3459        *not* regenerated since they are already out of date and I don't
3460        want to create the impression that they are suddenly working.
3461    o removed KAP stuff for DEC's
3462    o modified/added many .cvsignore files in */code and */input
3463    o added new expt "solid-body.cs-32x32x1"
3464      + this uses an alternative form of ini_curvilinear_grid.F which
3465        is not necessarily any better than the current one...
3466    
3467    checkpoint40pre4
3468    o added re-initialisations of utrans,vtrans,rtrans in
3469      calc_common_factors which are crucial for TAF.
3470    o extended iMin,jMin range for calc_common_factors,
3471      calc_diffusivity
3472    o added option ALLOW_PASSIVE_TRACER
3473    o a few minor updates and fixes
3474    
3475    checkpoint40pre3
3476    o created calc_gtr1.F for gad package
3477    o split the_main_loop and re-introduced forward_step
3478    o some recomputations of nIter0 for TAMC
3479    
3480    checkpoint40pre2
3481    o Updated to latest branch of AJA, JMC
3482    o Added gradient check package
3483    o Added routines for passive tracer handling
3484    o Added carbon sequestration sensitivity experiment
3485    
3486    checkpoint39
3487     o Modifications and fixes to support TAMC
3488       (mainly missing or wrong directives)
3489     o Corrected common blocks when fooling TAMC to produce adjoint I/O
3490       in addummy_in_stepping
3491     o Updated verification/vero/ (bug fixes in code/, correct pickups in input/)
3492     o Enabled "sliced" (xz-,yz-) exchanges, needed for obcs.
3493     o Included following packages:
3494       cal: calendar
3495       exf: external forcing
3496       ecco: essential routines to control use of cal, exf
3497             (NB: this is not the full ECCO environment)
3498     o disabled some packages by default in genmake
3499    
3500    checkpoint38
3501     o see notes_c37_adj.txt
3502     o corrected wrong layer index in external_forcing_t
3503     o replaced the_main_loop/forward_step by the_main_loop
3504     o removed forceoutput from write_state
3505       (replaced criteria for initial/final state)
3506     o added runtime flag for pre-C35 pickups: usePickupBeforeC35
3507    
3508    checkpoint37
3509     o mdsio.F routine split and packaged in pkg/mdsio
3510       (mdsio.F and mdsio_gl.F still exist in eesupp/src but are not
3511        used unless genmake -disable=mdsio)
3512     o allow a more precise surface-geopotential gradient for the atmosphere
3513       taking into account the change in space of Alpha (=1/rho) at the surface.
3514     o variable "etaN" (replace cg2d_x) is the surface R-anomaly [r unit]
3515       (ocean: sea surface height [m] / atmos: surface pressure anomaly [Pa])
3516     o Change units: Phi_Hydrostatic (=phiHyd), Phi_Surface(=cg2d_x) and
3517       Phi_NonHydrostatic (=cg3d_x), all have now the dimension of a potential
3518       [m2/s2] (pressure/rhoConst in the ocean ; Geo-Potential in the atmosphere).
3519     o Time-Average diagnostics defined as a pseudo package "timeave".
3520     o pickup files : old pickup (before c35) did not work with new code (c35
3521       and after) unless activating 2 commented lines in initialise-varia.
3522     o Non-Hydrostatic pickup file Pb fixed.
3523     o bug with Rigid-lid version (since c35) fixed.  
3524    
3525    checkpoint36
3526     o implement Crank-Nickelson barotropic time-stepping
3527     o recover Time-Average diagnostics
3528     o fix Pb in checkpoint (PR#19)
3529     o AIM become a standard package ; clean unused CPP_kees
3530    
3531    checkpoint35
3532     o subtantial rewrite of dynamics.f
3533     o allows staggered time-stepping
3534     o packaged obcs, aim (Atmospheric Physics), zonal_filt, shap_filt
3535     o added bottom drag (linear + quadratic)
3536    
3537    checkpoint34
3538     o Modified exchange routines for correct reverse simulation.
3539     o Added verification output to comply with bug fix in impldiff.F
3540       as of c33 (exp2, natl_box).
3541     o Corrected store directives in dynamics.F
3542     o Corrected array boundaries in impldiff.F
3543     o Corrected array dimensions in gmredi.
3544       Added temporary scalars to avoid storage by TAMC (gmredi, kpp).
3545     o Added routine GLOBAL_SUM_INT to global_sum.F
3546     o Added mdsio_gl.F for ECCO purposes.
3547    
3548    checkpoint33
3549     o Fixed bug in lower BC in impldiff.F
3550     o Fixed confusion about units of forcing arrays in FFIELDS.h
3551       namely Fu,Fv,Qnet,Qsw,EmPmR:
3552       - Removed verification/natl_box/code/external_fields_scale.F
3553         (did not differ from that in model/src)
3554       - Changed units of fu,fv,Qnet,Qsw,EmPmR back to proper units
3555         (see FFIELDS.h for description)
3556       - Scale fu,fv,Qnet,Qsw,EmPmR when used in external_forcing_surf.F,
3557         kpp_calc.F and kpp_transport_t.F
3558       - Removed model/src/external_fields_scale.F and calls to it
3559       - verification/natl_box uses flux data with "atmospheric" sign so
3560         a special version of external_fields_load.F is used to
3561         change the data as it's read in. This way, the arrays
3562         have the right units and signs at all times tha a user could
3563         possibly use them.
3564     o Corrected genmake to delete a temporary file during configuration
3565    
3566    checkpoint32
3567     o Scaling of forcing fields moved from external_forcing.F to
3568       external_fields_scale.F, called directly after loading fields.
3569     o Surface relaxation terms added to surface tendency fields in
3570       extra subroutine.
3571     o impldiff.F changed to avoid storing by TAMC of huge intermediate
3572       fields.
3573     o Changes in GMRedi to comply with packaging structure.
3574     o Modifications and bug fixes in KPP package.
3575     o Verification experiment for KPP added (verification/nat_box/)
3576    
3577    checkpoint31
3578     o Packages interface brought in line with defined standard
3579       -> new routines packages_...F
3580       -> changes in initialise_fixed.F, initialise_varia.F
3581       -> enables initialisation interface for ECCO package
3582     o Rescaling of external forcing fields immediately after read
3583       (removed from external_forcing.F)
3584       -> new: surface_fields_scale.F
3585       -> affects ini_foorcing.F, external_fields_load.F
3586     o Computation of surface tendencies before tendency updates.
3587       -> new: external_forcing_surf.F
3588     o Change of variable names useGMRedi, useKPP, useECCO
3589     o Further changes in dynamics.F, impldiff.F for TAMC
3590     o Tested for experiments 0, 2, 4.
3591       - not yet tested for GMRedi.
3592       - not yet tested for KPP.
3593    
3594    checkpoint30
3595     o Updates for OBCs
3596     o New experiment for test OBCs (internal_wave)
3597     o New output.txt in verification/exp4/results/
3598     o Updates for KPP: calculation of viscosity corrected, new variables
3599       kpp_dumpFreq and kpp_taveFreq
3600     o CPP'd calls to system routines for TARGET_CRAY_VECTOR (P.H.)
3601       and entry for T90 in genmake
3602    
3603    checkpoint29
3604     o packaged KPP and GM/Redi
3605    
3606    checkpoint28
3607     o Corrected initialization of hFacMin for difference vertical coordinates
3608     o Modified calculation of partial cell thickness to more robust algorithm
3609     o config_summary.F: replaced write_1D_... by write_0D_...
3610       read_write.F: added subroutines write_0D_...
3611     o routines calc_common_factors, calc_gs, calc_gt, calc_phi_hyd, find_rho:
3612       included some initialisations required for TAMC.
3613     o routine calc_isoslopes: modified sqrt computation to make it
3614       differentiable for zero argument.
3615     o routines dynamics, impldiff:
3616       included store directives and tape key computations required for TAMC.
3617     o ALL TAMC related changes are between ifdef ALLOW_AUTODIFF_TAMC
3618    
3619    checkpoint27
3620     o fixed calc_isoslopes() to so that cancellation of terms in tensor
3621       formulation works properly with variable resolution.
3622     o restructured the calling tree between the_model_main() and dynamics()
3623     o split initialise() into initialise_fixed() and initialise_varia()
3624     o introduced initialization file pSurfInitFile for free surface (cg2d_x)
3625       in new routine ini_psurf()
3626    
3627    checkpoint26
3628     o moved some #ifdef in optional routines to encompass everything
3629       except the argument declarations. This was using up some memory.
3630     o fixed macros like _ADT to work with both versions of Linux cpp
3631     o cleaned up some unused and uninitialized variables
3632       (helps when debugging with strict compile options)
3633     o split up CPP_EEOPTIONS.h into options and macros
3634       (macros are now in eesupp/inc/CPP_EEMACROS.h)
3635     o patch for 2 processor JAM mode
3636    
3637    checkpoint25
3638     o updates for OBCs and NH
3639     o dramatically reduced memory usage
3640     o added "JAM" routines for use on Artic network
3641     o parameterization of convection by implicit vertical diffusion
3642     o added a diagnostic of convective index
3643     o moved call to calc_divg_hat() from dynamics() to solve_for_pressure()
3644       (this is was partly for OBCs and NH but also in anticipation of
3645        an explicit free-surface option)
3646     o initial state input files for U and V
3647    
3648    checkpoint24
3649     o Removed some spurious "REAL"s
3650     o Updated KPP to latest version from JPL
3651     o Added a COS(latitude) in horizontal viscosity
3652    
3653    checkpoint23
3654     o Added del^4 diffusion for salt and temperature
3655     o Multiple minor fixes (implicit none's, arguments to global_sum, etc.)
3656    
3657    checkpoint22
3658     o Made many small changes: implicit none, format(i5), etc...
3659     o Introduced KPP mixing scheme (compiles and runs but *not* tested)
3660    
3661    checkpoint21
3662     o Introduced new I/O package that supports direct-access records (mdsio.F)
3663     o Split-up mid-level I/O routines
3664     o Updated input data for experiments 0,1,2,4 and 5
3665     o Finally removed the genmake.* scripts (everyone seems happy with genmake)
3666    
3667    checkpoint20
3668     o Tidied up open-boundaries some more
3669     o Added non-hydrostatic code
3670     o Fixed some input data
3671     o Modified MPI start-up to work in "coupled" context.
3672    
3673    checkpoint19
3674     o Tidied up directory structure for verification experiments.
3675     o Added new code for open boundaries.
3676     o Corrected advective terms near boundaries.
3677     o Added CPP flag for "old UV" geometry and corrected spherical geometry.
3678     o Implemented free-slip/no-slip BCs and del^4 dissipation.
3679     o Split default parameters out of ini_parms.F into set_defaults.F.
3680    
3681    checkpoint18
3682     o Further changes for optional code generation with
3683       CPP - ugh!
3684    
3685    checkpoint17
3686     o Beginning to incorporating modularity
3687       for supporting atmos. and ocean configs.
3688     o Small changes for TAMC complinace
3689     o New ultra simple test case. Barotropic box
3690       configuration "exp0".
3691    
3692    checkpoint16
3693     o Minor changes to exchange routines to support
3694       accumulation in reverse mode. Adjoint of an
3695       assignment is an addition.
3696     o Changes to support compilation by TAMC (LR(1)
3697       syntax) and by g77 under Linux ( 72 character
3698       limit ).
3699    
3700    checkpoint15
3701     Rewrote exchange routines to allow
3702     o General tile <-> tile connectivity.
3703     o TAMC reverse mode flag ( is this really needed? )
3704     o Variable width overlap and exchange region widths.
3705     o Hooks for sharing data via DMA, Arctic, Memory Channel,
3706       shmput/shmget, VIA, SYSV shmem and every other cool
3707       communication method.
3708    
3709    checkpoint14
3710     Consistent isomorphism chages made. These allow dynamical core
3711     to support both pressure and meters as a vertical coordinate.
3712    
3713    checkpoint13
3714     Release which corrects global_max problem and a couple
3715     of KGM time-averaging diagnostic errors. Also contains
3716     a double-gyre experiment setup as well as the baseline
3717     4 degree global template. The double gyre template is
3718     organised to allow it to be applied automatically to
3719     the baseline configuration.
3720    
3721    branch-point-rdot
3722     A few tidy-ups have been made bt the real point of this
3723     check-point (excuse the pun) is to allow a branch to be
3724     made for the purposes of adding the rDot alterations.
3725     I don't want to commit the rDot to the main-trunk until
3726     we've actually tested it...
3727    
3728    checkpoint12
3729     Tidy up and added generic genmake script (formerly
3730     configure script).
3731     Released to testers.
3732    
3733    checkpoint11
3734     Re-arranged initialise() and introduced ini_vertical_grid()
3735     and ini_masks_etc().
3736    
3737  checkpoint10  checkpoint10
3738   Introduced the configure script.   Introduced the configure script.
3739   Separated out the diags package.   Separated out the diags package.

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