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revision 1.121 by heimbach, Tue Jan 21 19:44:45 2003 UTC revision 1.943 by mlosch, Wed Jan 23 16:41:21 2008 UTC
# Line 1  Line 1 
1  $Header$  $Header$
2    $Name$
3    
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    o pkg/exf:
8      - add a little more diagnostic to exf_interp_read (in analogy to
9        mds_read_field, can be turned off with debugLevel < debugLevA=1)
10      - improve vectorizability of exf_interp for TARGET_NEC_SX, makes code
11        ugly but fast (vectorization is not yet complete)
12    o pkg/obcs: replace obcs_apply_area/heff/hsalt/hsnow with obcs_apply_seaice
13    o pkg/seaice: moved DIFFERENT_MULTIPLE from seaice_model to seaice_dynsolver
14      http://forge.csail.mit.edu/pipermail/mitgcm-devel/2008-January/003173.html
15    o verification/seaice_obcs: updated for restart test and latest options
16    o pkg/seaice: add a new flag SEAICEuseTEM to use a slightly different
17      ice rheology (so-called truncated ellipse, that gets rid of tensile stress);
18      for now this is only available for the C-grid code and also within
19      #ifdef SEAICE_ALLOW_TEM, because this option may slow down the EVP code
20    
21    checkpoint59m
22    o pkg/seaice: use different time constant for melting (SEAICE_gamma_t)
23      and freezing (SEAICE_gamma_t_frz) ice due to mixed layer temperature
24    o gad_som : fix flux output (& diagnostics) to have same units as other  
25      advection scheme fluxes (was previously multiplied by deltaT).  
26    o added verification/seaice_obcs both to test seaice open boundaries
27      and to provide an example matlab scrpt for generating them
28    o added verification/lab_sea/input.salt_plume for testing pkg/salt_plume
29    o pkg/salt_plume: clean up salt_plume_frac.F to
30      remove redundancy in PlumeMethod 1 and 4
31    o pkg/kpp: added saltplume diagnostics
32    o pkg/obcs and pkg/seaice:
33      - do not set uice and vice to zero when OB*icefile are unspecified
34      - OBCS_SEAICE_AVOID_CONVERGENCE is undefined by default
35      - moved seaice tracer obcs after call to seaice_growth
36    o pkg/salt_plume: added various options for salt plume depth
37      criterion and for vertical distribution of the salt
38    
39    checkpoint59l
40    o pkg/ptracers: new version of ptracers pickup:
41      read meta file and write only fields which are needed to restart.
42      ( same logic as main pickup file ; also using pickupStrictlyMatch )
43    o pkg/seaice:
44      - add timescale for melting due to warm mixed layer as a means of
45        setting SEAICE_availHeatFrac more conveniently
46      - add a CPP-flag/runtime parameter check for flooding algorithm
47      - reformulated availHeat in seaice_growth.F to be independent of AREA
48    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
49      unit changes
50    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
51    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
52      SX vector computer.
53    o pkg/seaice:
54      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
55        seaice forcing fields can now be read only through pkg/exf
56      - removed some unused halos
57    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
58    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
59      or U/VICE from U/VWIND before computing U/VSTRESS
60    
61    checkpoint59k
62    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
63      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
64    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
65      all experiments pass when compile with un-initialised var. checking option.
66    o added pkg/salt_plume
67    o script to test restart (for now, in MITgcm_contrib/jmc_script)
68    o pkg/seaice: new read/write pickup version.
69      read meta file and write only fields which are needed to restart.
70      ( same logic as main pickup file ; also using pickupStrictlyMatch )
71    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
72    o lab_sea.hb87: modify the domain & update output.hb87.txt :
73      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
74      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
75      process. Fixed here by closing the domain at the Northern boundary.
76    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
77    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
78      a set of consecutive levels in/from a 3-D array.
79    o pkg/ptracers:
80      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
81      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
82    
83    checkpoint59j
84    o in pkgs: dic, obcs, offline, rbcs:
85      standard way to compute coeff. for time interpolation between 2 time reccords
86      which retains full precision (& make results less dependent on compiler).
87      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
88    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
89      packages instead of reading ice cover and wind speed separately
90    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
91     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
92      to allow to compile customized code before the update)
93    o cleaning-up:
94      - fix CPP instruction syntax in pkg/obcs
95      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
96        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
97      - fix some threads issue in IO parts.
98    o pkg/dic:
99      - add tons of "_d 0" (--> much better testreports !)
100       and then update outputs of tutorial_global_oce_biogeo
101    o pkg/mom_fluxform:
102      add a special version of momentum advection intended to conserve momentum
103      next to a bathymetry step or a coastline edge. (default = off = #undef)
104    o new read/write pickup version:
105      - for now, only implemented for main (mdsio) pickup file.
106      - write out only what is needed to restart; merge pickup_nh , pickup_ph
107        and main pickup together.
108      - read meta file; read only what is needed to restart; stop if a field
109        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
110        if it make sense (even if the restart is not perfect).
111      - if no meta file, assume that pickup to read corresponds exactly to
112        a pickup that would currently be written.
113      - read pickup written in the old format (until checkpoint59i) if it
114        recognizes an old meta file (no field-list).
115      - add a meta file in exp. which starts from a pickup: 2 cases:
116        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
117         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
118        b) a meta file describing the content of the associated pickup file
119         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
120    o pkg/mdsio & pkg/rw:
121      - new routine to read a meta file ; new set of routine to read
122        Multiple-fields file (with meta file).
123    o added open boundary conditions capability for seaice
124        HSNOW, HSALT, UICE, and VICE
125    
126    checkpoint59i
127    o adjoint:
128      * fix multiDimAdvection adjoint
129        (partial recomputation problem by TAF for fVerT(:,:,kDown)
130        and comlev1 size definition (maxpass vs. max. number of tracers)
131      * verification/global_ocean.90x45x15 adjoint now tests
132        NLFS and multiDimAdvection using DST3 (=30)
133      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
134    o pkg/kpp: add "_d 0" to real constant (if missing);
135      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
136      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
137    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
138      for internal parameters related to restart process (formerly from PARAMS.h)
139      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
140    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
141      as argument. (only atm2d & obcs write_pickup have not yet been updated)
142    o pkg/monitor:
143      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
144      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
145      - account for deep Atmosphere factor and density factor (anelastic)
146    o added open boundary conditions capability for seaice HEFF and AREA
147    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
148      thermodynamics
149      - requires a little reorganization, which affects the testreport results
150        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
151        so that now the conservative form is tested
152      - add a few comments
153    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
154    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
155    o add new diagnostics to seaice: advective, diffusive fluxes (only for
156      multidim-advection, for scheme 2 they are not filled) and transports,
157      thermodynamic growth rates
158    o change units of EmPmR (inside the code, + within coupling interface)
159      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
160      Affects results @ truncation level (cg2d match) and update output of
161       experiments: lab_sea(6), global_ocean.90x40x15(10),
162      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
163      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
164      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
165      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
166    
167    checkpoint59h
168    o pkg/exf:
169      - improve vectorization by moving if-statement out of loops in
170        exf_mapfields, exf_radiation
171      - exf_bulkformulae.F: introduce 2D fields and vectorize code
172    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
173    o testreport:
174      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
175        monitor & update offline_exf_seaice exp. output.
176      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
177    o pkg/seaice:
178      - bug fix in the evp solver: boundary conditions were affected be
179        masking of zMax/zMin (changes results)
180      - minor bug fix in boundary conditions in seaice_calc_strainrates
181        (changes results for no_slip)
182      - seaice_lsr.F: make interpolation of eta dependent on boundaries
183      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
184      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
185        stress formulation and no-slip boundary conditions
186    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
187      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
188    o pkg/seaice: a first HSALT time stepping equation has been checked in
189    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
190      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
191      without requiring DO-IF statements
192    o pkg/thsice:
193      use continuous power-law function for partition of energy between lateral
194      melting/freezing and thinning/thickening ; old code using step function
195      still available with #undef THSICE_FRACEN_POWERLAW
196      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
197    o testreport: change AD testing : check against results/output_adm.txt
198      using same scripts as for forward test.
199    
200    checkpoint59g
201    o adjoint testing: in preparation for changing testreport:
202      - output format: cost and grad written on separated lines
203      - ad output results in directory "results" (instead of "results_ad")
204    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
205    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
206    o pkg/ecco: allow user defined cost function contributions
207    o testreport:
208      Allow to choose (per experiment) the list of tested output variables
209       and the main variable (used to issue a pass/FAIL ) ;
210      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
211      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
212      Also modify printing of summary:
213       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
214       b) echo the list of tested variables in the individual summary.txt of
215          each experiment.
216    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
217      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
218      (but still depend on the tile decompostion of the domain).
219    o pkg/seaice: change a discretization detail to make the B-grid code
220      "more symmetric". This change is likely to remove all "ridges/leads" that
221      where quasi-aligned with the grid in B-grid solutions. It may also be
222      the solution to the stress coupling issues with the B-grid.
223    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
224      remove .cvsignore from input dir. (since testreport no longer run here).
225    o pkg/thsice:
226     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
227     - fix reshaping of sea-ice just after advection:
228       melt all the ice only if ice-volume is too small.
229     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
230       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
231     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
232    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
233      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
234    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
235      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
236      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
237      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
238      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
239      -> update output.txt
240    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
241     this affects truncation error: -> update output.txt of exp:
242      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
243      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
244    
245    checkpoint59f
246    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
247    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
248      a bounded range (in forward mode)
249    o pkg/ecco, ctrl, autodiff and mom_common:
250     internal parameter controls, completements of implementations
251    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
252    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
253      (not seem any difference in testing results).
254    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
255       at face corners.
256    o pkg/generic_advdiff:
257     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
258      loop range indices for computing vertical advection tendency
259      and do the calculation in the interior only (no overlap) ;
260      for now, only implemented for SOM advection (to save CPU time).
261     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
262    o exch2 adjoint
263      First set of changes:
264      - add exch2 hand-written adjoint templates
265      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
266        This will require cleanup in pkg/autodiff/*.F
267        (changed routines currently kept separate in verif. code/)
268      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
269        that used to hide exch2 or cubed-sphere specific code
270        (commented via 'cph-exch2')
271    o pkg/seaice
272      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
273    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
274       output of global_ocean.cs32x15.thsice .
275    
276    checkpoint59e
277    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
278      for B-grid vector (not yet tested) and C-grid vector (<- only used
279      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
280    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
281      (#ifdef ALLOW_SALT_PLUME)
282    o gather_2d/scatter_2d: removed halo regions
283    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
284      scheme and the corresponding test case (under front_relax dir). For now,
285      only available with Skew-flux form and not yet tested in realistic set-up.
286      adjoint: store directives updated, but gradient checks deteriorated,
287      so maybe GM/Redi adjoint is now broken.
288    o seaice adjoint
289      * add AREA, HEFF, HSNOW as control variable
290        (should not change lab_sea results)
291      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
292    o pkg/seaice:
293      * added computation of saltFlux in seaice_growth;
294        For time being, sea ice salinity is assumed constant
295        contribution of snow flooding to freshening of sea ice is neglected.
296        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
297        defaults to 0.0 in order to maintain backward compatibility.
298        Typical values for SEAICE_salinity are 4 to 10 g/kg.
299      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
300      * added SEAICE_availHeatFrac, which specifies fraction of surface level
301        heat content used to melt or grow ice
302      * commented out cap of HICE: it helps keep ice thinner
303      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
304      * applied OBCS T/S mask to HEFFM sea ice mask
305    
306    checkpoint59d
307    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
308     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
309     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
310    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
311     and change default value of parameter "GM_Small_Number";
312     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
313       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
314       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
315    o pkg/ecco: cost function when applying pkg/smooth to controls
316    o pkg/ctrl: add forcingPrecond run time parameter
317    o pkg/seaice:
318     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
319     - fix bug in metric terms of u-equation in LSR solver (implicit part),
320       changes verification/lab_sea
321     - rearrange implicit part of u-equation in LSR solver to make it easier to
322       read, understand, and debug. This causes changes at the truncation level.
323     - fix (serious) bug in the boundary conditions (sign error in the implicit
324       part) of the LSR solver. Changes all LSR results.
325     - fixed problem with HSNOW initialization to avoid thick snow when AREA
326       is initilized with small values - does not change lab_sea results.
327     - added HsnowFile initialization capability
328    o pkg/smooth: addition to model/src and pkg/ctrl so allow
329     initialization of pkg/smooth and application to control vector
330    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
331    o dependencies: pkg/profiles requires pkg/cal
332    o pkg/profiles:
333     - added option ALLOW_PROFILES_GENERICGRID
334         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
335         that interpolation information (grid points and coefficients) is provided
336         within the netcdf input files.
337         -> sample matlab scripts can be found in MITgcm_contrib/gael
338         that allow you to prepare netcdf input files.
339     - also modified: cleaner include statements, cleaner error print statements,
340       cleaner stops when error, and more tests of the netcdf input files consistency.
341    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
342    o pkg/seaice:
343     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
344       requires a new routine: seaice_diagnostics_fill.F
345     - make sure that seaice does not move if not forced (pressure replacement
346       method, Hibler and Ip, 1995), changes results
347     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
348     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
349       It is turned off by default (=-1.), because it changes the results.
350     - make it possible to read AREA from a file, too.
351    
352    checkpoint59c
353    o add S/R and diagnostics for oceanic mixed-layer depth
354    o move GMRedi call after all vertical mixing schemes (including KPP)
355    o pkg/thsice:
356     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
357      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
358    o pkg/obcs:
359     - bug fix for balance code
360    o pkg/seaice:
361      - allow values of SEAICE_elasticParm > 1
362      - add new parameter SEAICE_evpTauRelax as an alternative
363        to SEAICE_elasticParm
364      - make lsr boundary conditions free slip (by default), changes result
365      - add code for no slip boundary conditions for lsr
366      - set minimum of zeta to zero (and not 4e8) (changes results)
367      - add a cap on AREA after advecting AREA if seaice_growth is not called
368    o change calculation of Visbeck K:
369      - no longer depend on tapering scheme; instead, compute slope (limited
370        by GM_maxSlope). this is equivalent to what was comuted before with
371        clipping or linear tappering.
372      - fix vertical averaging (wrong by 1/2 level)
373      - leave the old version (but will not be maintained) within
374        #ifdef OLD_VISBECK_CALC / #endif
375      - update output of exp. ideal_2D_oce
376    o change error catch in calc_r_star to improve vectorization
377    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
378      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
379    o adjoint:
380      Re-organized adjoint checkpointing according to Matt Mazloff
381      (but with modifs/completions/cleanups)
382      Storing is now bundled into large arrays to optimized I/O
383      (and second step in cleanup of the_main_loop)
384    
385    checkpoint59b
386    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
387      - export/import (between ocean & coupler) fields needed for ocean DIC.
388    o pkg/seaice:
389      - get rid of three more exchanges seaice_calc_viscosities (required
390        different loop boundaries in seaice_lsr and seaice_ocean_stress)
391      - bug fix in seaice_ocean_stress (update of lab_sea required)
392      - reduce loop boundaries to necessary minimum also in seaice_evp
393      - go back to the old way of computing deltaC/Z as the adjoint likes that
394        better
395    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
396      passive tracer to an Age Tracer) + update output.txt
397    o pkg/exf:
398      - implement A-grid / C-grid selection for wind-stress input files.
399      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
400      for now, in exf_bulk_largeyeager04.F only :
401      - change implementation for case where windspeed + 2. components wind-stress
402        are read-in. AND use rhoConstFresh to convert evap.
403    o pkg/seaice:
404      - use correct EXCH_UV for wind-forcing (on A-grid).
405      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
406        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
407    o pkg/exf:
408      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
409      EXF_INTERPOLATION:
410      - merge global_with_exf/code version of exf_interp_read.F
411        to the main code ;
412      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
413        reading the file ; Important: This options needs to be defined to recover
414        previous code.
415        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
416      - no longer loose real*8 precision along the way when using exf_iprec=64.
417    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
418      - change discretisation of evp-solver in order to avoid another exchange
419        (changes lab_sea) and clean up a little
420      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
421        help the adjoint (this also changes the results slightly)
422      - add a few "_d 0" where they had been missing in seaice_evp.F
423      - cleaning up: remove unused seaice_calc_rhs.F
424    o pkg/exf: some cleaning-up:
425      - change various "constants" into runtime parameters
426      - cleaned-up Large&Yeager04 routine which should eventually
427        replace exf_bulkformulae.F (changed names of S/R and CPP)
428        and merged various ALLOW_ATM_WIND options
429     only used with thsice pkg (in thsice_get_exf.F):
430      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
431        which are used when useStabilityFct_overIce=TRUE (= the default)
432      - change default values of ice & snow emissivity and scale downward LW
433        by ice & snow emissivity.
434    o pkg/thsice:
435     fix few little problems, in thsice_calc_thickn.F:
436      - growth vertically (and not laterally) if iceFrac == iceMaskMax
437      - melt only laterally if hIce < hThinIce (as the comments say)
438      and in thsice_extend.F:
439      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
440      - start to form ice as soon as the minimum ice-volume is reachable.
441     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
442      and cpl_aim+ocn
443    o pkg/kpp
444     - move computation of surface related input fields to KPP into a new
445       subroutine kpp_forcing_surf.F
446     - remove wrong (within bi,bj loops) EXCH calls.
447     - little cleaning (add argument myThid in last position, cvs header ...)
448     - for now, fix conservation problem by exchanging KPPviscAz (may not
449       be the best fix)
450    o pkg/seaice
451     - check for inconsistent evp parameter/cpp-flag combination
452     - remove leftover errIO flat for obsolete name list error handling
453    o OpenAD
454     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
455    
456    checkpoint59a
457    o pkg/seaice: some parameter clarifications and a little bit of clean up
458    o pkg/thsice: rename run-time parameters:
459       himin       -> hIceMin
460       himin0      -> hThinIce
461       hihig       -> hThickIce
462       i0          -> i0swFrac
463       transCoef   -> bMeltCoef
464       frac_energy -> fracMelting
465      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
466       with default values (for now) that do not change the results.
467      remove old version of thsice vars advection in pkg/seaice.
468    o in FFIELDS.h:
469      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
470      - make pLoad & sIceLoad always available (but still only used if
471         ATMOSPHERIC_LOADING is #define).
472    o pkg/kpp: replaced _KPP_RL with _RL
473    o bug fixes for vertical diffusivity computations when both KPP and
474        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
475        are no longer updating the vertical diffusivity array
476        (passed as argument) but are (re-) setting those arrays.
477    o pkg/seaice: fix bug in evp solver, while doing that
478      - change (improve?) discretization of stress computations for both
479        cgrid-lsr and evp solver
480      - add a new routine to compute strain rates
481      - the above changes lab_sea results
482      - add no slip conditions for evp solver (off by default), lsr-version
483        may follow
484      - fix exchange for shear at Z-points (does not change lab_sea)
485      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
486        (to force the user to pick a time step since there is not "safe" way
487        of choosing it)
488      - add principal stress diagnostics
489      - rearrange fields for evp a little to avoid having to call a: too many
490        exchanges and b: exchanges for stress trensor components which we do
491        not have.
492      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
493        of evp, complete rewrite for lsr case (latter is does not yet work
494        in all cases)
495    o pkg/kpp: add code to have mixing in shelf ice caverns
496      - add myThid to all kpp routines (long overdue)
497    
498    checkpoint59
499    o pkg/exf:
500      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
501        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
502      - move exf header files from lower_case.h to UPPER_CASE.h ;
503        add missing cvs Header & Name
504      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
505      - add namelist param. selectStressGridPosition, exf_monFreq
506      - retire many _CLIM routines, and remove data.exf_clim
507        + params moved to data.exf
508        + climsst, climsss now handled by exf_set_gen, i.e.
509          climss?period=0 refers to constant field,
510          climss?period=-12 to monthly forcing
511      - split up namelists in data.exf
512    o pkg/seaice:
513      - remove seaice_exch and seaice_exch_uv
514      - remove superfluous exchange of theta
515      - add myThid to seaice_budget_ocean/ice
516      - add new interface for atmospheric wind forcing (C-grid only)
517        + new routine
518        + two new field (taux, tauy for stress over ice)
519        + removed one global field (DAIRN) for C-grid case only
520    o pkg/thsise
521      - 2nd set of modifs for thsice adjoint in conjunction with exf
522    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
523    
524    checkpoint58y_post
525    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
526      vertical diffusivity, similar to that in MOM4; turned on using
527      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
528      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
529    o Added capability for 3D specification of background vertical diffusion
530      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
531      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
532      "data" file that contains the 3D vertical diffusivity coefficients.
533    o ice dynamics (pkg/seaice) with thsice thermodynamics:
534      - add code within pkg thsice to advect & diffuse sea-ice fields
535      similar to (and will replace) what has been added in  seaice_advdiff.F,
536      but: - conserving Mass, Heat & Salt.
537           - better when using non-linear advection scheme (not yet fully tested)
538           - can also be used in atmospheric set-up (for now, only the diffusion).
539    
540    checkpoint58x_post
541    o IO option for global-file compact format:
542      - add options when generating topology (utils/exch2/matlab-topology-generator)
543      - add I/O capability (pkg/mdsio).
544      - adapt utils/matlab/rdmds.m to read this format.
545      for now long-line format not yet supported by pkg/mdsio (& exch2).
546    o shelfice: add a few diagnostics
547    
548    checkpoint58w_post
549    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
550      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
551      (and replace horiVertRatio in NH code).
552      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
553                         and tutorial_plume_on_slope (sensitive to truncation)
554    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
555      directly to drive seaice model (C-grid only)
556    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
557     - reintroduce computation of wind from stress,
558     - compute tau (in exf_bulkformulae.F) from windstress averaged to
559       mass points to avoid tau = 0
560     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
561    o rdmnc.m: make it work with "global" files created with gluemnc
562    o rdmnc.m : some improvements in dealing with singleton dimension
563      (tested on all testreport mnc output files).
564    o genmake2: disable pkg/profiles if netcdf test fails.
565    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
566    o move call to cal_readparms up to make calendar parameters/variable available
567      to all packages
568    
569    checkpoint58v_post
570    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
571      useDynP_inEos_Zc tested.
572    o pkg/exf: changes to properly interpolate/mask/scale initial fields
573    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
574      and portions thereof.  See read_cs.txt for description and examples.
575    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
576      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
577      following the great-circle arc between those 2 points.
578    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
579      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
580    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
581     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
582     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
583     - still needs work (not working with some options ; efficiency to improve)
584       and serious testing.
585     - use this scheme for temperature & salinity in 2 advection test exp.:
586       advect_xy & advect_xz, respectively.
587    
588    checkpoint58u_post
589    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
590    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
591    o testreport: add option "-skipdir" to skip some test.
592    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
593      momentum calculation.
594    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
595    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
596      remove checkpoint.F and the_correction_step.F (no longer used);
597      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
598    o add option (linFSConserveTr) to correct for tracer source/sink due to
599      Linear Free surface
600    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
601    o pkg/thsice: fix reading mnc-pickups
602    
603    checkpoint58t_post
604    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
605    o pkg/mdsio:
606     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
607       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
608       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
609     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
610     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
611       either MDS_READ_FIELD or MDS_WRITE_FIELD )
612     - new S/R (to replace MDSWRITEMETA), which allows to write more
613       informations (variable names, time ...) to meta files.
614     - modify rdmds.m to give back the meta file content.
615    o pkg/diagnostics: change vertical interpolation to be safer, and more
616       flexible (define p-levels to interpolate to in data.diagnostics);
617      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
618       diagnostic pointer.
619    o pkg/seaice: more cleaning up of seaice_growth, added many comments
620    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
621    o fix multi-category seaice:
622     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
623       SEAICE_MULTICATEGORY
624     - fix short wave heat flux
625    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
626       and allow to use EVP solver. Change forward lab_sea: test both EVP
627       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
628    o Initial check-in of lab_sea adjoint
629      (very similar to natl_box_adjoint/code_seaice)
630      * used C-grid and EVP solver
631      * used KPP, GM/Redi
632      * uses inAdExact=.TRUE.
633      * gradient checks fail for both ADM and TLM
634        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
635        f.d. gradients actually seem more problematic than ADM, TLM gradients;
636        issue is related to forward mismatch between g77 an ifort
637    o pkg/seaice: overhaul of thermodynamics
638     - growth.F and groatb.F are replaced by new routine seaice_growth.F
639     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
640     - move a few global fields out of SEAICE.h into seaice_growth.F and
641       make them 2D (FICE/QNETO/ ...)
642     - remove FO (it is the same as QNETO)
643     - introduce a few local fields to avoid modifying external fields such
644       as atemp, etc.
645    
646    checkpoint58s_post
647    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
648      changed exf_set_gen.F so that
649        genperiod=0 means input file is one time-constant field and
650        genperiod=-12 means input file contains 12 monthly means
651    o CG2D: use pre-computed solver main-diagonal (stored in common block);
652      this affects truncation error ; generate new output file for exp. which
653      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
654        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
655        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
656        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
657        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
658        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
659    o start implementation of deep-atmosphere and anelastic formulation
660    o verification: remove 2nd copy of input files and use script "prepare_run"
661      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
662    o mom_common/vecinv/fluxform: fix a few initialisation isssues
663    o profiles: fix for multithreaded case
664    
665    o diagnostics: rename few diags:
666      s/'PRESSURE'/'RCENTER '/g
667      s/'TICE    '/'oceFreez'/g
668      s/'TAUX    '/'oceTAUX '/g
669      s/'TAUY    '/'oceTAUY '/g
670      s/'SWFLUX  '/'oceQsw  '/g
671      s/DIFx/DFxE/g
672      s/DIFy/DFyE/g
673      and add few ocean-forcing diagnostics:
674      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
675    o modifications to pkg/seaice/growth.F and budget.F, which change results of
676      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
677      as actual snow thickness.  It now refers everywhere to effective snow
678      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
679    
680    checkpoint58r_post
681    o modifications to pkg/seaice/growth.F, which change results of
682      lab_sea experiment: fixes pertain to melting snow over open water, to
683      masking EVAP under sea ice, and to using the correct AREA variable for
684      computations of EVAP, PRECIP, HSNOW, and GHEFF
685    o add ability to read bathy, salt, and theta using MNC (off by def)
686    o add flooding algorithm and advection of HSNOW for pkg/seaice;
687      both are turned off by default and do no change any results
688    o seaice advection with pkg/thsice: a step toward the use of non-linear
689      advection scheme, but #ifdef or commented out for now (requires more EXCH).
690    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
691      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
692      in natl_box (affects results @ truncation level: update output.txt)
693    o multi-threading and IO:
694      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
695      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
696        (needed to work with SingleCpuIO): tested in all verif. exp.
697    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
698      affects the results (but none of the verification test uses this scheme).
699    o Adding some pkg/diagnostics capability to pkg/seaice
700      (will certainly be subject to changes)
701    o ctrl: adding new control variables:
702      lwflux, lwdown, evap, snowprecip, apressure, runoff
703    
704    checkpoint58q_post
705    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
706      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
707      high_res_cube configuration by 4% on Columbia.
708    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
709      add (in global_with_exf/code) a version of EXF_INTERP_READ without
710      dynamical allocation (seems to work in multi-threaded).
711    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
712      single CPU io) so that TAF does not have to see EESUPPORT.h
713    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
714    
715    checkpoint58p_post
716    o obcs: stop if obcs is used with useCDscheme = .true.
717    o shelfice:
718     - fix a sign error so that no slip at shelfice interface works
719     - remove stop for combination non-hydrostatic code and shelfice. That does
720       not mean, that the results are correct, but at least they are numerically
721       stable
722    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
723    o added adjoint exch routined for all exch*3d* routines
724      and updated flow directives
725    
726    checkpoint58o_post
727    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
728      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
729    o change controling S/R for writing pickup file (new S/R do_write_pickup)
730      and clean-up reading/writing of pickup files.
731    o fix local version of read/write pickup (NH part) in rotating_tank/code
732    o simplify EXCH interface:
733     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
734     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
735    o added the regrid package
736    o shelfice:
737     - add a simple boundary layer scheme to reduce noise
738     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
739    
740    checkpoint58n_post
741    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
742       local variable (not in common block).
743    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
744      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
745      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
746        to work with SingleCpuIO.
747    o add "_d 0" to real constant of pkg/cfc subroutines ;
748       update exp. cfc_exemple & tutorial_cfc_offline output files.
749    o multi-threading and IO:
750      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
751        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
752      - barrier before and after reading.
753      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
754      - avoid using MDS_WRITELOCAL for LAND pkg output.
755      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
756        common-block variables ; Allows multi-threading with master-thread IO.
757    o change default MAX_NO_THREADS from 32 to 4 ;
758      and stop cleanly when MAX_NO_THREADS is too small.
759    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
760    
761    checkpoint58m_post
762    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
763       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
764    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
765       keep global_ocean.90x40x15 (for AD testing) with former secondary test
766       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
767    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
768        add MITgcm_tutorials (= code + all the tutorials)
769    o ecco, option to compute cost for total ssh (mean+anom)
770    o consistent with addition of ptracer and ssh in pkg/profiles
771    o profiles: adding ptracer and ssh
772    o testreport: change multi-test output-file name
773      (from output.txt.{name} to output.{name}.txt)
774    o profiles: now ok for mutli-tiles case
775    o seaice: add 4 parameters for different advection schemes for area,
776      (effective) seaice thickness, enthalphy, and snow height. Their default
777      is the standard parameter SEAICEadvScheme
778    o calc_gw:
779     - add cosFacU in zonal viscous flux (harmonic.visc.).
780     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
781       of tutorial_plume_on_slope.
782    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
783    o calc_gw: true flux-form, account for horizontal grid spacing.
784      update rotating_tank results, but not plume_on_slope (affected at
785      truncation level, 11 digits).
786    
787    checkpoint58l_post
788    o calc_gw:
789     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
790     - remove side-drag for now (need to fix it); update plume_on_slope results.
791     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
792    o commit code to make SST/SSS weights spatially variable
793      (based on either variable in-situ or variable initial T/S weights)
794    o pkg/ecco:
795      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
796        now based on horizontally varying weights wthetaLev, wsaltLev
797      * cost_averagesflags now returns year indices in addition to day, month
798      * sflux balance is performed on annual basis
799        (sflxumm, sfluxmm2, bal_sfluxmm)
800      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
801        including separate counting and multipliers
802    o pkg/rbcs
803      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
804    
805    checkpoint58k_post
806    o testreport:
807     - always build in dir. "build" (if not there, mkdir build instead of building
808       & running in input)
809     - run in dir run (if it exists), in build otherwise.
810     - call prepare_run (if input/prepare_run exists)
811     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
812    o pkg/exf modifications to interpolation and rotation routines for more
813       reasonable treatment of North Pole singularity: for tracers North Pole
814       value is set to northernmost zonal-mean value, for zonal velocity it is
815       set to zero, and for meridional velocity it is set to northernmost value.
816    o pkg/exf/exf_check_range.F
817     - add tile index to diagnostics and move stop statement to the very
818       end of the routine.
819    o pkg/diagnostics: (diagnostics_main_init.F)
820      define title of isomorphic variables according to the current config.
821    o pkg/thsice with pkg/seaice dynamics:
822    - fix domain of computation (interior only, required for exf) and do exchanges
823    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
824    o towards a standard way of dealing with multi-threading in MONITOR
825      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
826    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
827       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
828    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
829    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
830    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
831       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
832    o tracer advection:
833     - clean-up and simplify calc_common_factors.F
834     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
835       advection subroutine (but still not used within DST advection S/R)
836    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
837    
838    checkpoint58j_post
839    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
840      from file (collects calls previously in FORWARD_STEP)
841    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
842    o adjoint store dir. adjusted accordingly
843    o genmake2
844      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
845    
846    checkpoint58i_post
847    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
848      on wind stress (SEAICEstressFactor defaults to 1.)
849    o Total number of Timers is finite (<=40): comment out 2 non-essential one
850      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
851    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
852      on CS-grid: no longer loosing mass.
853    o exf & curvilinear-grid: no longer modify longitude xC & xG.
854    o pkg/ggl90: fix sloppy output and fix a bug
855    o pkg/seaice: added SEAICEuseEVPpickup parameter
856      - Set to false in order to start EVP solver with
857        non-EVP pickup files when using SEAICEuseEVP
858      - fix sign error in diffusion in seaice_calc_rhs
859    
860    checkpoint58h_post
861    * Modifications for bottom topography control
862      o replace hFacC by _hFacC at various places
863      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
864      o add non-self-adjoint cg2d_nsa
865      o update autodiff support routines
866      o re-initialise hfac after ctrl_depth_ini
867      o works for 5x5 box, doesnt work for global_ocean.90x40x15
868    * Adding verification for 5x5 box (4-layer) bottom topography control
869    
870    checkpoint58g_post
871    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
872       used for mean seasonal cycle, mean diurnal cycle); add an example
873       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
874    o pkg/ggl90:
875      - add parameter (minimum surface kinetic energy)
876      - fix bug (avoiding division by zero)
877    o couple pkg/thsice to pkg/seaice:
878      - modify advection in seaice to accomodate new scalar fields to be advected
879      - only muliDimAdection scheme work with seaice/thsice
880      - mapping of thsice-variables to seaice-variables, back and forth
881      - does not break the verification experiments, but does not give the
882        desired results either
883    o pkg/seaice
884      - make (default) second order advection a bit less confusing?
885    
886    checkpoint58f_post
887    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
888      to pkg/seaice):
889      - new routines thsice_map_exf and thsice_get_exf provide the interface
890      - add an additional formal parameter to thsice_solve4temp
891    o pkg/exf:
892      - add new fields wspeed, snowprecip (to be able to couple to thsice)
893      - correct Stefan-Boltzmann constant
894      - new parameter for longwave surface emittance
895      - separate some stuff from exf_bulkformulae into new routines  
896        exf_radiation, exf_wind
897      - add new parameters and constants: longwave emissivity for ocean, ice
898        and snow, evaporation parameters over ice
899      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
900        either wind from stress or stress from wind
901    o pkg/thSIce:
902    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
903    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
904       and THSICE_CALC_THICKN
905    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
906    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
907      to make debugging easier.
908    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
909    o pkg/bulk_force:
910      - clean-up comments and parameters ;
911      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
912    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
913      generate new output for test-experiment: aim.5l_cs.thSI
914    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
915      testreport accordingly
916    
917    checkpoint58e_post
918    o SEAICE_CGRID adjoint done
919    o R_STAR adjoint implemented.
920      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
921      * need to sort out init. of h0facc, etc.
922    o Make pkg/profile fully independent of ecco,cost, etc. stuff
923      to be able to use it in pure forward.
924    
925    checkpoint58d_post
926    o upgrade simple test-experiment to tutorial example:
927     step.1: duplicate the experiment and (step.2) will remove the old copy.
928      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
929      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
930      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
931      tutorial_global_oce_biogeo    <- copy of dic_example
932      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
933      tutorial_plume_on_slope       <- copy of plume_on_slope
934      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
935      tutorial_global_oce_optim     <- empty for now (David ?)
936      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
937     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
938    o correct a sign problem in cost_scat.F
939    o obcs and ptracers: fix boundary conditions for advections schemes
940      with larger stencil
941    o thsice adjoint: start
942    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
943      completeness
944    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
945      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
946    o ptracers adjoint:
947      * avoid extensive recomputatations
948      * fix missing re-init. of gptr (missed by TAF)
949    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
950      me to turn off the excessive output to STDOUT that this package produces
951    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
952      and add those terms in Vector-Invariant formulation.
953    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
954      if the control period (xx_hfluxperiod etc) is 0
955    o in profiles pkg, clean routines and fix details
956    o in ecco pkg, reading ssh data:
957      fix problem in case the model does not start at iter0=0
958    o fix mnc-pickup/restart for ptracers
959    o new package prifiles:
960      code to compute profile-based cost by Gael Forget
961      (modifs in ecco, ctrl, autodiff)
962    o Benign bug fix in initialization (spotted by M. Mazloff) of
963      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
964    
965    checkpoint58c_post
966    o adjoint: finish NLFS adjoint and provide reference output in
967      verification/global_ocean.90x40x15/results_ad_nlfs
968    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
969      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
970      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
971      with SEAICE_CGRID defined.
972    o move calendarDumps from "data" to "data.cal" and clean-up the code
973      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
974    o add useEXF & useCAL flags (for now, set in hard-coded way)
975    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
976      (were missing in NH mode, and wrong in quasihydrostatic mode).
977      waiting for Chris updated version of calc_gw to add those CALLs.
978    o fix bug in quasihydrostatic S/R ;
979      add a test for this option: global_ocean.90x40x15.qshyd
980    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
981      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
982    o add on/off flag useOffLine for package OFFLINE
983    o seaice:
984      - modify advection so that it works also on the C-grid
985      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
986        problem in multi-tile runs with C-grid
987      - add flags for clipping ice velocities and/or masking solver forcing
988      - fix drag (ocean on ice) formulation and a bug that caused noise in the
989        C-grid solver
990      - added a few comments to seaice_diffusion.F
991      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
992        are now exclusive)
993      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
994        required re-ordering the code a little:
995       + make DAIRN global variable (defined in SEAICE)
996       + move computation of the viscosities eta and zeta into a new separate
997         routine (because I need to recompute them in seaice_ocean_stress.F)
998    
999    checkpoint58b_post
1000    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
1001      update output.txt of exp. aim.5l_cs.thSI
1002    o various mnc cleanups and improvements:
1003      + shrink lookup tables by factor of ~4
1004      + better error reporting when running out of lookup space
1005      + able to handle longer path/file names (up to 500 chars)
1006    o adjoint:
1007      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
1008      - TBD: "hidden" mom_vecinv recomp. in dynamics
1009    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
1010     (allow to differentiate between forcing components using new integer flags:
1011      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
1012     and add new flag to put Dissipation tendency out of Adams-Bashforth.
1013    o ecco
1014      - enable trend removal from SSH anomaly obs.
1015    o adjoint
1016      - a fix for PmEpR when #undef EXACT_CONSERV
1017      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
1018      - try to fix "hidden" recomp. in forward_step for NLFS
1019        (NLFS seems broken sometimes after I checked it in)
1020    o seaice:
1021     - add c-grid version of the dynamic solver:
1022       + three new routines that are the c-grid substitute lsr, dynsolver
1023         and ostres
1024       + put a few fields that were local to dynsolver into global common
1025         blocks, so that I can move the computation of stresses etc into
1026         seaice_lsr (saves coding but may break the adjoint).
1027     - replace more hardwired parameters by runtime parameters
1028     - add ice masks that mask the rhs of the implicit solvers where there
1029       is no ice (commented out in seaice_dynsolver, because i am not sure
1030       if this works properly), eventually this should replace the clipping
1031       of ice velocities in seaice_dynsolver to +/-40cm/s.
1032    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
1033      include it only where its needed
1034    o move balancing of fluxes before the call of external_forcing_surf
1035    o seaice:
1036      - correct units of turning angles (now they are really in degrees)
1037      - move computation of GWATX/Y out of main routine into dynsolver
1038      - initialize GWATX/Y in seaice_init
1039    o Apply mask on Fresh-Water flux (needed for SSH forcing).
1040      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
1041    o seaice: add runtime flags for turning angles (default to zero)
1042    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
1043      and trend from exf forcing and ctrl control adjustments
1044    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
1045      (since checkpoint57x_post)
1046    o change the default rotation period to 86164.s = the Earth rotation
1047    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
1048      and based on a reference stratification. Tested within hs94.cs-32x32x5.
1049    o seaice advection: add code for choosing between the default (2nd order
1050      central differences) and multiDim advection schemes provided by
1051      pkg/generic_advdiff
1052    o seaice:
1053      - removed all references to SEAICE_GRID.h fields from
1054        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
1055        (cubed-sphere configuration will change a little)
1056      - grid computations in seaice_init are obsolete now.
1057      - cleaned up code a little so that is easier to read (hopefully).
1058      - added new (better?) discretizations of default advection and diffusion
1059        (turn on with SEAICEuseFluxForm)
1060      - replace 1 in 3d global fields by kSurface in growth.F
1061      
1062    checkpoint58a_post
1063    o seaice:
1064      - bug fix in advect.F
1065    o shelfice:
1066      - separate shelfice load anomaly from pload (breaks with time
1067        dependent forcing), => introduce constant field shelficeLoadAnomaly.
1068        Its default is 0., but it may be computed more cleverly from (unknown)
1069        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
1070        done offline. A good approximation of the pressure load anomaly is
1071        necessary to avoid large initial adjustment processes underneath
1072        deep-reaching shelfice.
1073      - small fix in ISOMIP shelfice_thermodynamics
1074      - add more sophisticated thermodynamics of Hellmer (1989), this is
1075        now the default
1076      - give a few constants more intuitive names
1077    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
1078      if bulk formulae are used in long integration (especially EmPmR). Turn
1079      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
1080      if balancePrintMean, the imbalance that is substracted is printed to
1081      STDOUT.
1082    o fix bug (typo) in obcs_apply_eta.F
1083    o add a new package shelfice which enables us to model the circulation
1084      underneath shelf-ice with draughts of hundreds of meters.
1085     - works
1086     - to do: + include improved thermodynamics
1087              + check whether kSurfC (from model/inc/SURFACE.h) can be used
1088                instead of new field kTopC
1089              + can we use topoFile, Ro_surf and existing code in ini_depth.F
1090                instead of new field R_shelfIce and new code in ini_depth.F
1091                and ini_mask_etc.F?
1092              + adjust vertical mixing schemes?
1093    o seaice pkg:
1094     - add a cpp-flag to include a simple formula for a salinity dependent
1095       freezing point of sea water at the surface
1096     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
1097       meridional stresses are now different (and hopefully correct)
1098    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
1099       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
1100       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
1101    o pkg/diagnostics: add options and parameters for regional-statistics
1102       diagnostics ; define regions by reading a region-mask from a file
1103       (might add other options later)
1104    o pkg/bulk_force:
1105     - add option and parameters to use AIM surface-flux formulae.
1106     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
1107       others forcing fields (defined in PARM05, parameter file "data") are loaded
1108       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
1109     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
1110     - use the right EXCH call for uwind,vwind (to work on CS-grid).
1111     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
1112       and parameters (note: calcWindStress replaces .NOT.readwindstress).
1113     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
1114    
1115    checkpoint58
1116    o add "--embed-source" option to genmake2 which, when the supporting
1117      tools can be compiled (as determined by genmake2) will turn on the
1118      embed_files package which then embeds the entire MITgcm source code
1119      (*.[fFhc] + Makefile) used for the build within the executable
1120      - requested by CNH but off by default
1121      - adds a paltry <9MB to the mitgcmuv executable in most cases
1122      - only writes the output when useEMBEDSRC in eedata is true
1123    o clean up 3-dim. relaxation codes:
1124      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
1125      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
1126      * Thanks to Tom Haine for testing!
1127    
1128    checkpoint57z_post
1129    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
1130      affects output (@ truncation level) of exp. plume_on_slope ; updated.
1131    o fix the pickup behavior for obcs in combination with ptracers
1132    o fix a bug in ptracers_external_fields_load
1133    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
1134      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
1135    o transfered surface NH pressure to eta field (if exactConserv).
1136    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
1137         and update lab_sea output.txt file.
1138    o completing 3-dim. relaxation code: additional term
1139         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
1140      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
1141      * At compile time, in "EXF_OPTIONS.h" set
1142          #define  ALLOW_CLIMTEMP_RELAXATION
1143          #define  ALLOW_CLIMSALT_RELAXATION
1144      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
1145          tauThetaClimRelax3Dim = 15552000.0,
1146          tauSaltClimRelax3Dim  = 15552000.0,
1147      * 3 cases:
1148          1) Use a constant-in-time 3-dim. field
1149          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
1150          3) Real-time relax. to time-evolving prescribed field
1151    o Adding Laplacian-type smoothness constraint on
1152      initial and boundary (forcing) controls (ic, bc)
1153      * enable at compile-time via
1154        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
1155      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
1156      * Absolute scale somewhat unclear so far
1157      * no area weighting was included since no other cost term does so far
1158    
1159    checkpoint57y_post
1160    First step for a NLFS adjoint
1161    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
1162    o new init. routines for calc_r_star, calc_surf_dr
1163    o still need to deal with ini_masks_etc
1164    o testreport seemed happy
1165    checkpoint57y_pre
1166    
1167    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
1168    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
1169    o add new offset feature to offline pkg (plus minor cleanup)
1170    o cfc fixes for final year of integration
1171    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
1172      be in GCHEM_OPTIONS).
1173    
1174    checkpoint57x_post
1175    o fix testreport Pb in multiple test experiment.
1176    o cleanup our namelist syntax in verification:
1177      - make it more F95 standards compliant (some work still needed)
1178      - allows the vast majority of our tests to work with gfortran
1179    o Non-Hydrostatic:
1180     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
1181     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
1182    o Allow to apply AB on T,S rather than on AB(gT,gS):
1183     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
1184     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
1185       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
1186     - need a "clever" read_pickup to restart from the other AB formulation
1187    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
1188    o remove some unused variables (reduces number of compiler warnings)
1189    o adjoint
1190      * Disable useVariableViscosity for adjoint for time being
1191        (there are a number of extensive recomputations)
1192      * Initialize certain variables needed for adjoint
1193    
1194    checkpoint57w_post
1195    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
1196                 fix the singleCpuIO RS version of MDSWRITEFIELD
1197       and add a WARNING if using globalFiles=T with multi-processors.
1198    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
1199      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
1200    o tracer advection scheme:
1201      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
1202       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
1203       was not very convenient).
1204      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
1205       (further tests needed for the implicit DST & Flux-Limiter schemes).
1206    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
1207      and sRef for convenience, handy, when you want to initialize
1208      ptracers in a large domain with a constant non-zero value. Also,
1209      untangle ptracers_init.F a little.
1210    
1211    checkpoint57v_post
1212    o change dome exp. to use variable viscosity in side-drag terms.
1213    o remove all the files from the cfc_offline test since they are now
1214      incorporated into tutorial_cfc_offline which has been producing
1215      identical results for a few days of testing
1216    o add new parameter: sideDragFactor to enable half-slip-side BC
1217      and change side-drag S/R to use viscosity from mom_calc_visc
1218      (can switch back by setting sideDragFactor=0.); affects results at
1219      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
1220       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
1221    o vorticity & strain are now computed without masking, to account for
1222      no-slip-side BC in variable viscosity calculation ; mask is applied
1223      anyway later on, before computing advection/coriolis terms.
1224    o modify exp4 to test new obcs support for reading from external files
1225      and for passive tracers
1226    o fix behavior of ptracers_monitor when monitor output is written to a
1227      netcdf-file; still not independent of monitor.F (writes in the same
1228      file).
1229    o change default value of tRef (put a uniform, meaningful value for ocean
1230      & atmos) and initialize sRef (was missing, as Martin mentioned).
1231    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
1232      to be proportional to enstrophy dissipation length.  Thus,
1233       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
1234      This is now consistent with Smagorinsky and with the manual.
1235    
1236    checkpoint57u_post
1237    o OBCS and PTRACERS: add open boundary support for passive tracers
1238      - either use homogenous (pseudo) v.Neumann conditions or prescribe
1239        OB-values from file; this is not different from the way theta and salinity
1240        are treated
1241      - however, Orlanski-radiation conditions are not supported, and the model
1242        will stop if you use pTracers and Orlanski at the same time.
1243      - beefed up the rountine obcs_external_fields_load: now only those open
1244        boundary values are overwritten with values from files for which there
1245        are really files, otherwise the OB-fields remain untouched. This makes
1246        it possible to use different OBs at different ends of the domain (as
1247        with EXF)
1248    o reduce number of exch calls in shap_filt (s2).
1249    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
1250      truncation level) 4/5 MLAdjust test results (11&12 digits match).
1251    
1252    checkpoint57t_post
1253    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
1254    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
1255      same truncation, independent of the face number: affects affects several
1256      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
1257    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
1258      note that biharmonic viscosity + no-slip was not tested in any experiment.
1259    o fix bug in non-linear free-surf side-drag ; generate new output for
1260      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
1261    o make mnc honor the writeBinaryPrec flag for most kinds of output
1262    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
1263    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
1264      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
1265    o add brackets in multi-terms sum to get same truncation, independent of
1266      the face number (manage to get exactly same value of gU,gV at the cs-edge)
1267      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
1268    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
1269      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
1270      a maximum grid-scale Reynolds number.  Also, changes all length calculations
1271      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
1272      Suggested values of viscosity parameters found in mom_calc_visc.
1273      Many new viscosity diagnostics available.
1274    
1275    checkpoint57s_post
1276    o Add clearing-house for viscosity calculations, mom_calc_visc and
1277      correct numerous bugs in LeithD and Smagorinsky discretizations.  
1278      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
1279      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
1280      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
1281      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
1282      The Strain-Tension form is now called with useStrainTensonVisc=.true.
1283      ViscAhStrain and viscAhTension are now retired.
1284    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
1285    o In response to JMC's bug report, genmake2 now ignores any soft-links
1286      that it finds in the *current* directory when searching for files.
1287      Soft-links found in any other source directories will still work as
1288      they did before.
1289    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
1290      a C routine to unlimit the stack size
1291    o mnc-ify pkg/aim snapshot vars
1292    o mnc-ify pkg/land as requested by Daniel
1293    o various changes to mnc including:
1294      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
1295      - output can now be grouped so that all files within a group
1296          change the ITER portion of their names in lock-step together
1297      - can now read ("global") PER-FACE (in addition to PER-TILE) files
1298          and works with both EXCH1 and EXCH2 (but needs more testing)
1299      - writing works for all verification test cases w/ g77 on Linux
1300    
1301    checkpoint57r_post
1302    o make MNC variable initialization happen earlier
1303    o add diagnostics for (almost) each term of the momentum Eq.
1304    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
1305    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
1306    o remove MINIMAL_TAVE_OUTPUT option ;
1307      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
1308    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
1309      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
1310    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
1311    o add time-dependent SST, SSS control
1312    o cost terms in ecco/ modularized (new cost_generic.F)
1313    o cost_averages routines are modularized (new cost_averagesgeneric.F)
1314    o new infrastructure for seaice model vs. obs misfits in seaice/
1315      * driver from the_main_loop.F is seaice_cost_driver.F
1316      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
1317      * gradient check in Exp. 6a of natl_box_adjoint/
1318    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
1319      (see README file)
1320    
1321    checkpoint57q_post
1322    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
1323    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
1324      - bug was reported by Jean-Michel and Ian Fenty
1325    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
1326      update exp. cpl_aim+ocn output.
1327    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
1328      Needed for high-res. runs with large global files
1329      to be able to limit tapelev size
1330    o Changed some tests for adjoint:
1331      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
1332      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
1333      * global_ocean.90x40x15/ back to default 3-level checkpointing
1334    o Modifications to enable scripted COMMON to MODULE conversion
1335      * verification/OpenAD/code/ has necessary scripts and description;
1336      * converts, compiles and runs successfully;
1337    
1338    checkpoint57p_post
1339    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
1340    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
1341      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
1342    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
1343    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
1344      (was already the case for dissipation with mom_vecinv,
1345       and also the case for grad.PhiHyd when staggered-timeStep)
1346      This will allow to put dissipation out-off the AB time-stepping.
1347     Unfortunately, affects truncation error. Update output of exp. that "fails"
1348      (cg2d matching number) and leave the others for later: front_relax(10),
1349      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
1350      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
1351    
1352    checkpoint57o_post
1353    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
1354      (2) its ready to be documented during the 20050801 DocFest
1355    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
1356      for ideal_2D_oce and lab_sea on linux_ia32_g77
1357    o set to #undef CTRL_SET_OLD_MAXCVARS_30
1358      in global1x1_tot/code_seaice_adj to access indices 32, 33
1359      (worth another tag)
1360    
1361    checkpoint57n_post
1362    o adding precip control xx_precip 32
1363    o adding swflux control xx_swflux 33
1364    o Replacing 10 forcing penalty cost routines by 1 generic.
1365    o Implementing partitioning in time-mean and variable adjustment
1366      for atmos. state.
1367    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
1368    o in natl_box_adjoint:
1369      * updated exp 1 to 10
1370        (but does not have time-mean vs. variable split results yet)
1371    o updated global1x1/*_seaice_adj/
1372      to incorporate latest changes
1373    o enable useSingleCpuIO for mdsio vector routines
1374      (applies in particular to tapelev I/O)
1375    o removed inefficient K-loop in all active_file*control*.F
1376    
1377    checkpoint57m_post
1378    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
1379      and advect_cs (use EXCH-2 and standard cs-32 grid files).
1380    o pkg/exch2: filling of face-corner halo regions is optional
1381      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
1382    
1383    checkpoint57l_post
1384     tag before updating tutorials (pre-release-2)
1385    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
1386       for output and interpolation of input fields onto model grid)
1387    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
1388       Affects results of exp. rotating_tank ; update output.txt.
1389    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
1390          and taking the square quantity and/or using a fraction-weight field.
1391    o fix aim_diagnostics_init.F mate numbers.
1392    o add mnc output capability to diagnostics/diagstat and update
1393      our cvsignore files for the ACSII output generated
1394    
1395    checkpoint57k_post
1396    o lab_sea now uses diagnostics package and provides a suite of
1397      new EXF diagnostics output.
1398    
1399    checkpoint57j_post
1400    o exf
1401      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
1402        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
1403        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
1404      * extended diagnostics output
1405        - now includes all EXF variables
1406        - hs, hl moved to common block
1407        - separate S/R for diagnostics, called after ctrl vector is added
1408        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
1409        - EXFqnet contains true Qnet (i.e. includes qsw)
1410      * updated verif. lab_sea, global_with_exf
1411      * Rearranging hflux (exf_mapfields -> exf_getforcing)
1412        to ensure that diagnostics sees a true EXFqnet
1413    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
1414    o diagnostics pkg: change pointers so that 1 diagnostic can be used
1415      several times with different frequencies.
1416    o mnc-ify the thsice package as requested by Daniel Enderton
1417      - the monitor--MNC output needs work
1418      - many attributes need to be added (most are currently blank)
1419    o mnc-ify theaim_v23 package as requested by Daniel Enderton
1420      - many attributes need to be added (most are currently blank)
1421    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
1422    o add Sadourny like discretization to the 4th.O vorticity advection scheme
1423    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
1424      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
1425         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
1426    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
1427     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
1428    
1429    checkpoint57i_post
1430    o Diagnostics package was changed: diagnostic allocation is now deactivated
1431      by setting an empty file name in the namelist (used to be by setting 0 frequency)
1432    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
1433      add 1rst Order upwind vertical Shear.
1434    o add a quick fix for A/B checkpointing in OFFLINE mode
1435    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
1436      end-run around the C/Fortran linking horror in eesup/src/timers.F
1437    o added pkg/runclock: allows user to terminate run based on wall clock
1438    o added non-hydrostatic scaling parameter: nh_am2
1439    o pkg/my82: futile attempt to make results compiler-independent by adding
1440      some "_d 0", etc. no effect.
1441    o for mnc output, fill the 'T' coordinate var with myTime and create a
1442      separate 'iter' variable for iteration count
1443    o pkg/diagnostics:
1444      add new capability: output of Global/Regional & per-level statistics ;
1445      tested against monitor output (including land & thSIce) on various exp.
1446    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
1447    
1448    checkpoint57h_done
1449      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
1450      data.diagnostics, data.gchem, data.ptracers) is done.
1451    
1452    o pkg/diagnostics: prepare for Global/Regional statistics.
1453      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
1454    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
1455      and rename it: DIFFERENT_MULTIPLE
1456    
1457    checkpoint57h_post
1458    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
1459    o pkg/diagnostics: change output frequency, now in seconds (instead
1460      of Nb of iterations). This requires to change data.diagnostics.
1461    checkpoint57h_pre
1462    
1463    o in mnc, let the user create the output dir if both mnc_outdir_date
1464      and mnc_outdir_num are false
1465    o add fflags() to pkg/diagnostics which allows one to specify, on a
1466      per-file basis, the file precision [default behavior is unchanged]
1467    o added diagnostics to pkg/kpp, including computation of mixed layer
1468      depth based on a temperature/density criterion
1469    o updated verification/natl_box to test the new pkg/kpp diagnostics
1470    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
1471    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
1472    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
1473      not mnc -- this mistake was found by JMC and is now corrected
1474    
1475    checkpoint57g_post
1476    o add Adams-Bashforth 3rd Order time stepping:
1477      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
1478      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
1479    checkpoint57g_pre
1480    
1481    o make lambda[Theta,Salt]ClimRelax spatially varying
1482      (default remains spatially uniform constant based on tau)
1483    o added new control variables
1484      * init. uVel, vVel, etanN
1485      * lambda[Theta,Salt]ClimRelax
1486    o separate masks used for ctrl_pack/unpack 'from write_grid' output
1487      (suggested by G. Forget)
1488    
1489    checkpoint57f_post
1490    o add parameter "baseTime" = model base time = time at iteration zero
1491      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
1492      account for baseTime shift
1493    o move Coriolis arrays from PARAMS.h to GRID.h
1494    checkpoint57f_pre
1495    
1496    o mnc-ifying the seaice package
1497    o introduced an alternative length scale calculation for use in the limiting
1498      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
1499    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
1500    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
1501      as well as grad(vort3).  Made it compatible with both approximate form
1502      for the cubed sphere and full form of these gradients.  Added flag
1503      useFullLeith to select between approximate and full form.  
1504    o add "d0" in getcon.F to reduce differences between compilers/platforms
1505      update output.txt of exp. fizhi-gridalt-hs
1506    o change port_rand funtion to allow to set the seed.
1507    o fix obscure MNC bug involving conversion between reals and integers
1508      - it caused no problems with certain (eg. gcc, ifc) compilers but the
1509        new version is now more standards-compliant
1510    o adjoint-related modifications
1511      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
1512      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
1513      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
1514    
1515    checkpoint57e_post
1516    o Adding eddy stress controls a la Ferreira et al.
1517    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
1518    
1519    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
1520      update output.txt of exp. fizhi-gridalt-hs
1521    o add more "Z" dimensions and associated coordinate vars to MNC
1522    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
1523    o parameter calendarDumps: when set, approximate months (30-31 days) and years
1524      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
1525      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
1526      months and years.  Requires pkg/cal.
1527    o diagnostics: add pickup functionality
1528      - off by default for backwards compatibility
1529      - current version only uses MDSIO -- MNC will be added
1530    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
1531    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
1532    
1533    checkpoint57d_post
1534    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
1535    o modify verification/ideal_2D_oce so that it tests the creation of mnc
1536      output from the diagnostics package
1537    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
1538    o make genmake2 more portable by using ".$FS" instead of ".f" for more
1539      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
1540    o add coordinate variables to the MNC output from the diagnostics package
1541    o change MNC-flags default value: true when useMNC=TRUE
1542    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
1543      the ability (off by default) to read the grid information using MNC
1544    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
1545    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
1546    o do snap-shot diagnostics at the middle of the time-interval (instead of
1547      at the end).
1548    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
1549      new test for AIM with thSIce + slab-ocean
1550    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
1551    o move state variable diagnostics to the beginning of the time step ;
1552      (note: still needs some work specially for snap-shot diagnostics)
1553      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
1554    
1555    checkpoint57c_post
1556    o Change testing option (-ieee) to get closer agreement between g77 & ifort
1557    o generate new output.txt files on faulks with g77 & the new -ieee option
1558    checkpoint57c_pre
1559    
1560    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
1561      update output.txt of exp. global_ocean.90x40x15
1562    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
1563      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
1564    o add saltFlux(+File) forcing capability with periodicExternalForcing
1565    o allow to use pkg diagnostics for GM-Redi & ThSIce output
1566    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
1567    o improvements for the MNC output from DIAGNOSTICS:
1568      - correct handling of the unlimitied dimension
1569      - all dims now have associated coordinate variables
1570      - variables located at U, V, and Corner ("Z") points are now written
1571        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
1572        *all* data points are output
1573    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
1574    o added pkg/seaice/seaice_monitor.F
1575    o mdsio_readfield.F can now read files visible only to master MPI process.
1576    o pkg/seaice: some test code for ice-modified ocean stress
1577    o exf_getffields interpolation defaults to bilinear for all scalar forcing
1578      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
1579      spurious negative numbers for precipitation and humidity.  Will cause
1580      some small numerical differences for integrations using pkg/exf/exf_interp.F.
1581    o pkg/ctrl/
1582      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
1583        May be enabled via doPackDiag
1584      *  introduce z-scaling of
1585         + gradient (doZscalePack) and
1586         + control (doZscaleUnpack)
1587    o pkg/mdsio/
1588      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
1589      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
1590    
1591    checkpoint57b_post
1592    o simplify options in diagnostics_fill arguments (remove weird combinations)
1593    o fix MNC coordinate variables so that they now contain per-face index
1594      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
1595      general, EXCH2 grids are only aligned to a "local" coordinate system
1596    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
1597    o Implement instantaneous output within pkg diagnostics:
1598      setting a negative frequency in data.diagnostics produces
1599     "snap-shot" output (as opposed to time-average if freq > 0)
1600    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
1601      NOTE: change ptracer diagnostics name: use 2 characters to work with
1602            more than 9 tracers. Add also diagnostics of advect & diffus flux.
1603    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
1604      becomes the coordinate variable for the 'T' dimension
1605    o add CF-style coordinate variables to MNC
1606      - just a first cut:  numbers are meaningless on the cubesphere and
1607        missing along the T axis but otherwise it works!
1608    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
1609    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
1610    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
1611      this is based directly on what the model compute, so that the content of
1612      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
1613    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
1614    o clean up build options files for SunOS, in particular
1615      - remove -traditional from xmakedepend
1616      - change -xarch=v9 to -xarch=native for f77
1617      - restore use of make (not gmake)
1618      - add CC=gcc if using g77
1619    o changes per discussion of AM, JMC, & EH3 today:
1620      - move redundant "grid" variables out of "state" -- in preparation of
1621        creating proper CF-style coordinate variables and in recognition
1622        that any/all grid variables can be easily copied (eg. w/NCO) from
1623        the grid files into any of the other NetCDF files
1624      - *always* output grid variables with MDSIO (this will eventually be
1625        changed)
1626      - output MNC grid file if useMNC is true
1627    o every instance of _END_MASTER() has been found and replaced with
1628      _END_MASTER( myThid ) in order to satisfy certain picky Sun
1629      preprocessors
1630    o re-arrange diagnostics pkg initialisation:
1631     - allow each package to extend the available diagnostics list
1632     - add some checking and fix small problems (multi-threaded, ...)
1633     - new S/R diagnostics_fill (replace fill_diagnostics):
1634       look through the short list of active diag. (instead of the long list)
1635       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
1636    
1637    checkpoint57a_post
1638    o this set of changes restores TAMC compatibility
1639      tested for global_ocean.90x40x15 adjoint on trough
1640      (what a pain)
1641    
1642    checkpoint57a_pre
1643    o some modifs in tools/build_options for sunos
1644    o call ctrl_pack for ctrl at end for optimcycle=0
1645    
1646    checkpoint57
1647    o add horizontal bi-harmonic viscosity for vertical velocity
1648      - new parameter viscA4W (defaults to viscA4)
1649      - affects only non-hydrostatic code
1650      - to be done: no-slip lateral boundary conditions
1651    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
1652    o implement Implicit Vertical advection for pTracers
1653    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
1654      (implemented also for implicit vertical diffusion & advection)
1655    o OBCS: extend application of tracer open boundary conditions
1656      to a strip beyond the boundary of width Olx/Oly
1657    o add call monitor to TAF set of required calls (flow directives)
1658      and include in natl_box_adjoint
1659    o untangle a few ifdefs related to cost, ctrl, autodiff
1660      untangel a few ALLOW_ECCO_OPTIMIZATION
1661    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
1662      (theta2, salt2 in ecco_cost_weights)
1663    
1664    checkpoint56c_post
1665    o OBCS as control variables
1666      - update ctrl_ad_diff.list, obcs_ad_diff.list
1667      - remove balance of obcs controls from default
1668      - fix index bug nobcs in ctrl_init
1669      - fix dummy fields filen in ctrl_pack
1670      - add dummy weights for obcs
1671    o lsopt: comment out fort.94 output
1672    o optim:
1673      - remove unnecessary header files
1674      - adjusted namelists
1675      - add xerbla.F to Makefile
1676    o exf:
1677      - multiple modifications of exf_check_range
1678      - unit change in exf_init_runoff from [m/year] to [m/s]
1679    o mdsio:
1680      - i/o-vector change debugLevel from debLevA to debLevB
1681    
1682    checkpoint56b_post
1683    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
1684      is called from DO_THE_MODEL_IO
1685      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
1686      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
1687      - clean up PTRACERS_WRITE_TIMEAVE a little
1688    o add another verification experiment that tests both the cfc-pkg and
1689      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
1690      reactive tendencies treated inline with regular timestepping
1691    o testreport previously did a lousy job of comparing small numbers, so
1692      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
1693      implemented in the little c-progam tmp_cmpnum.c which is embedded in
1694      testreport.
1695    o ptracers_monitor: bug fix for MPI
1696    
1697    checkpoint56a_post
1698    o GCHEM: finish reorganizating the package
1699      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
1700        (introduces another 3D-array for each passive tracer, but only if
1701        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
1702        gchemTendency is not needed because the timestep is done separately)
1703      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
1704      - GCHEM is now---more or less cleanly---separate from PTRACERS
1705      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
1706        so clear to me how that should be done in a general way.
1707    o CFC: improve formatting of output in CFC_ATMOS
1708    o PTRACERS:
1709      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
1710        that ALL experiments with ptracers enable can be checked. This makes
1711        GCHEM_MONITOR obsolete.
1712      - include a runtime parameter PTRACERS_monitorFreq that defaults to
1713        monitorFreq
1714      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
1715    o add PTRACERS (PTR0[1-5]) to testreport output
1716    o exf_check_range:
1717      * default changed to .TRUE.
1718      * will check values for niter0 if debLevA, every timestep if debLevB
1719      * STOP in exf_check_range if 'out of range'
1720      * range chosen generous to allow for potential extema
1721      TBD: a version with stricter range
1722           permitted range would be runtime parameters
1723    o GMredi:
1724      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
1725      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
1726      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
1727    o GCHEM:
1728      - move call to GCHEM_FORCING_SEP, so that it is now called before
1729        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
1730      - introduced a useGCHEM runtime flag and applied it everywhere.
1731      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
1732        this flag is now only visible within GCHEM-pkg routines.
1733      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
1734        be replaced by a 3D array that is computed before thermodynamics; for
1735        this, the tracer ID iTracer had to be included into the parameter list
1736        of ptracers_forcing
1737      - set up forward_step to call gchem_forcing, that will replace
1738        gchem_forcing_int in ptracers_forcing
1739      - cleaning up
1740    o small cleaning of exch2: remove files that are also in eesupp/src
1741    
1742    checkpoint56
1743    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
1744    o mnc: cleanup "full" files--fixes out-of-memory problem
1745    o ECCO-GODAE
1746      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
1747      * fully merged and updated from SIO code
1748        windstress sign change affects
1749        - exf_inscal_[u/v]stress
1750        - sign of xx_tau[u/v] adjustments
1751        - signs in cost_scat
1752      * ctrl_get_gen: avoid update of tau[u/v] for first few days
1753      * natl_box_adjoint updated and compressed
1754      * 2-level checkpoint switch added
1755        (tested in EXP. 1 of natl_box_adjoint)
1756      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
1757    o SVD
1758      * first complete, non-hacked version for SVD calculations
1759      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
1760        performed via direct access files admtlm_vector.it????
1761        (via ctrl_[un]pack)
1762      * optimcycle is used for ARPACK iteration counter
1763        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
1764      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
1765        and add linear transforms where necessary
1766      * controls are initial/final SST, SSS (can be extended; need to check
1767        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
1768    o mdsio: filename info to both stderr, stdout
1769    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
1770      from sign change
1771    
1772    checkpoint55j_post
1773    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
1774      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1775    o add consistent build directories and .cvsignore files to verification
1776    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
1777    o make all subroutines 30 or less characters in length for certain older
1778      compilers to work (a thorough search only turns up two routines in
1779      pkg/ptracers)
1780    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
1781      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1782    
1783    checkpoint55i_post
1784    o change arrays for total vertical diffusivity (2.D if explicit,
1785      3.D if implicit) ; each ptracer uses its own background value.
1786    o added mnc/NetCDF output capability to ocn_compon_interf
1787      - added bits to verification/cpl_aim+ocn so that it can run on
1788        ITRDA and other clusters without the mpirun "-wd" option
1789    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
1790      configuration
1791    o give MNC the ability to create additional files rather than
1792      exceeding a specified file size limit "MNC_MAX_FILESIZE"
1793      - the default is just less than 2GB which is a practical limit
1794        on many systems
1795    o Compute the non-local term using either KPP vertical diffusivity (=default)
1796       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
1797    
1798    checkpoint55h_post
1799    o add verification test "vermix"
1800    o remove all the *_ioinc flags and replace with the single global
1801      outputTypesInclusive flag
1802    o allow to set a vertical profile of vertical diffusivity for T & S
1803    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
1804    o useMNC moved from data.mnc to data.pkg
1805    
1806    checkpoint55g_post
1807    o Renaming carbon AD experiments to comply with testreport conventions
1808    o Updating adjoint of Held-Suarez hs94.1x64x5
1809    o Fixing directives for non-ECCO forward_step, after ECCO directives
1810      have been fixed to avoid recomp. of do_oceanic_phys
1811      Works well for global_ocean.90x40x15,
1812      but recomp. issue remains for carbon
1813    o Updating adjoint output for natl_box_adjoint after
1814      pkg/ecco has been modified (see taga c55d_post)
1815    
1816    checkpoint55f_post
1817    o rename to timeave_init_fixed
1818    
1819    checkpoint55e_post
1820    o some delicate re-shuffle of store directives to avoid one
1821      extra call of do_oceanic_physics
1822      affects ecco_the_main_loop.F, do_oceanic_physics.F
1823      checkpoint_lev1_directives.h
1824    o NB: this may break global_ocean adjoint temporarily,
1825      but it is clear how to fix it. Will do later, need this now.
1826    
1827    checkpoint55d_post
1828    o ECCO specific cost function terms (up-to-date with 1x1 runs)
1829    o ecco_cost_weights is modified to 1x1 runs
1830    o modifs to allow observations to be read in as
1831      single file or yearly files
1832    o enable to read exf forcing fields as either
1833      single file or yearly files (flag useExfYearlyFields)
1834    checkpoint55d_pre
1835    
1836    o switch between 2-level and 3-level checkpointing
1837    o add ability of MNC to write local and "partial" (eg. 2D slices where
1838      the full 3D field is never actually stored) arrays to NetCDF files
1839      with the correct (that is, the complete multi-dimensional) set of
1840      array indicies
1841      - used in mom_vecinv() to write the diagFreq output
1842      - tested (demonstrated) in verification/aim.5l_cs
1843    o further mnc-ification
1844      - add verification/lab_sea to the list with mnc setups
1845      - fix undefined mnc v-names in cd_code
1846      - add kpp to mnc output (both snapshot and timeave)
1847    o non-hydrostatic code
1848      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
1849        in calc_gw.F
1850      - defaults to viscAh
1851      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
1852        friction or Leith) in non-hydrostatic mode, as long as there is
1853        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
1854    o pkg/cost
1855      extend simple cost functions to treat time mean quantities
1856      (T,U,V) via cost_accumulate_state from cost_tile
1857    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
1858        be 2 times larger than the minimum size the advection scheme requires.
1859        now get a perfect conservation of salt in advect_cs test-exp (updated)
1860    o GGL90 (Gaspar's TKE mixed layer)
1861      - add horizontal diffusion of TKE, requires exchanges in
1862        do_fields_blocking_exchanges, horizontal diffusivity is zero by
1863        default. In OPA there is no horizontal diffusion of TKE but the
1864        mixing coefficients are computed from a horizontal average of TKE of
1865        6 points or so. I think that diffusion has a little more physical
1866        justification.
1867      - clean up ggl90_calc in the hope of reducing memory usage (this hope
1868        was in vain)
1869      - mask tke-variable in ggl90_init
1870    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
1871    o fix biharmonic diffusion on CS-grid.
1872    o more obcs stuff
1873      - added obcs_external_fields_load as an alternative to the EXF-pkg option
1874        for reading boundary values. This routine is called from
1875        obcs_prescribe_read
1876      - updated obcs_check
1877      - changed sponge layer relaxation parameter units for days to seconds
1878      - turned off sponge layer by default
1879      - changed argument list of OBCS_CALC to myTime+deltaTclock
1880      - fixed about 35 bugs in obcs_external_fields_load
1881    
1882    checkpoint55c_post
1883    o obcs stuff
1884      - new runtime flags useOBCSprescribe, useOBCSbalance
1885      - re-arranged obcs_calc
1886      - moved exf_getobcs to obcs_prescibe_read
1887        obcs_prescibe_read is called after ORLANSKI stuff
1888        and independent of it (executable can contain all).
1889      - updated obcs_check
1890      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
1891        These may be necessary only if tangential velocities are
1892        prescribed at OB, not sure, needs testing.
1893    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
1894      which simplifies the calls and passes the ifc check-bounds test
1895    
1896    checkpoint55b_post
1897    o add a 2D scalar, Z location, exchange_2 routine.
1898    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
1899      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
1900      affects advect_cs results (for the wrong reason): update output.txt
1901    o use a more standard discretization for biharmonic viscosity ;
1902     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
1903      affects results of dome set-up: update output.txt
1904    o fix gad_advection.F (CubedSphere part), back to version 1.23
1905    o fix bug in mom_vi_del2uv.F (CubedSphere part).
1906    
1907    checkpoint55a_post
1908    o merged code to
1909      * prescribe/read time-dependent open boundaries
1910        (works in conjunction with exf, cal)
1911      * sponge layer code for open boundaries
1912      * each boundary N/S/E/W now has its own CPP option
1913        (healthy for the adjoint)
1914    
1915    checkpoint55
1916    o up-to-date adjoint of previous breaks
1917      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
1918      - global_ocean_ebm: adjoint still needs fix (TLM ok)
1919      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
1920      - carbon: * remove tr1-related adjoint verification
1921                * add ptracer as control variable
1922    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
1923      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
1924    
1925    checkpoint54f_post
1926    o in verification/carbin/ remove experiment related to
1927      ALLOW_PASSIVE_TRACER (array tr1 etc)
1928      code_ad/ input_ad/ results_ad
1929    
1930    o add two new packages
1931      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
1932        + subject to optimization (memory)
1933      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
1934        + subject to reordering (many GOTOs in the original code)
1935        + so far opps is called for every (i,j) point, and then operates in
1936          the vertical; one may want to reorder the scheme in order operate in
1937          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
1938          fields)
1939    o overhaul of IO so that we now have flags for MDSIO and/or MNC
1940      - all verification tests compile and run with linux_ia32_g77
1941      - defaults are compatible with current input files--nothing
1942        should change if you were not previously using MNC
1943      - MNC output has been added in numerous places (eg. timeave)
1944        but there are still a few writes not yet do-able with MNC
1945        (this is in progress)
1946      - flags now allow for either/or/both use of MDSIO and MNC and
1947        documentation will soon follow
1948      - numerous small formatting cleanups for ProTeX
1949    o add version info (via BUILD_INFO.h) to MNC and stdout
1950    
1951    checkpoint54e_post
1952    o add two new packages
1953      - pp81 (Packanowski and Philander, 1981), Richardson number and
1954        stratification dependent mixing
1955      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
1956      - these scheme operate in a similar manner as KPP (without ghat, of
1957        course), however there is only one diffusivity that is used for both
1958        temperature and salinity (and passive tracers)ç
1959    o add offline package
1960    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
1961      provided by Stephanie Dutkiewicz
1962    o genmake2: add ability to search for C compilers and cleanup test output
1963      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
1964    
1965    checkpoint54d_post
1966    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
1967    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
1968      leading to additional shift by 5 days each year of integration
1969       (i.e. leading to considerable offset over the years)
1970    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
1971    o start with no AB and no initial filtering (staggerTimeStep):
1972      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
1973    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
1974      (external loading & cpl import/export stay in forward_step.F)
1975    o update coupling interface to work with new staggerTimeStep
1976    o change MDSIO ptracers_pickup.
1977    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
1978    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
1979    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
1980    
1981    checkpoint54c_post
1982    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
1983      this affects (truncation error) output.txt of test-exp:
1984       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
1985    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
1986    o change Qnet to always be the net heat flux, (+upward).
1987      affects (truncation error) output of natl_box exp.: updated
1988    o define the max number of passive tracers in PTRACERS_SIZE.h
1989    o start to test mnc routinely in exp0
1990    o add sea-ice loading (sIceLoad) as a new forcing field.
1991    
1992    checkpoint54b_post
1993    o add testreport "-j JOBS" option for parallel builds (tested and pretty
1994       impressive on Altix and Opteron systems)
1995    o diagnostics can now write NetCDF files through the mnc package
1996    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
1997    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
1998    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
1999      affects (truncation error) output of lab_sea & natl_box exp.: updated
2000    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
2001    
2002    checkpoint54a_post
2003    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
2004    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
2005    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
2006    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
2007      + internal_wave (shift in writing cg2d_ini_res)
2008    checkpoint54a_pre
2009    
2010    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
2011      - modified verification/lab_sea and natl_box_adjoint accordingly
2012    
2013    checkpoint54
2014    checkpoint53g_post
2015    o prepare splitting of thermodynamics: store convect.counter in common block
2016    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
2017      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
2018    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
2019    o new parameter "nShapS": allow to treat differently S from T (nShapT)
2020    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
2021    o restore adjointability
2022    
2023    checkpoint53f_post
2024    o modifications that affect AIM experiment results (update output.txt):
2025      - no advection of S at top interface Nr (pkg/generic_advdiff)
2026      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
2027    o AIM pkg:
2028      - include stability function into surf.Flux derivative relative to Tsurf
2029      - calculate clear-sky radiation & surface temp. change (for diagnostics)
2030    
2031    checkpoint53e_post
2032    o merged cylindrical coord configuration
2033    o added rotating_tank experiment
2034    checkpoint53e_pre
2035    
2036    checkpoint53d_post
2037    o faulks upgraded: re-generate output.txt that have changed:
2038       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
2039    o Added Bryan and Lewis, 1979, vertical diffusivity profile
2040    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
2041    o added Sadourny discretization of Coriolis
2042      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
2043      - re-enabled use of omega3 (useAbsVorticity)
2044    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
2045      vector-invariant equations
2046      - note: does *NOT* yet use same variable visc. for no-slip BC's.
2047    o recoded the lateral boundary conditions for non-hydrostatic w, this time
2048      hopefully without new bugs
2049      - still to do: biharmonic friction for non-hydrostatic w
2050    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
2051    o regenerated output for global_ocean_ebm (using -ieee)
2052    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
2053      of mom_common/
2054      - simple re-arrangement of instructions within computing loop
2055    checkpoint53d_pre
2056    
2057    checkpoint53c_post
2058    o new version of coupler for AIM+thSIce and Ocean models
2059     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
2060     - land: change Evaporation of snow
2061     - aim with thSIce: fix bug in snow-precip.
2062    o changes to calc_gw.F
2063     - bug fix for w^2 term near the bottom boundary
2064     - (hopefully) improve the lateral slip boundary condtions for use with
2065        partial/looped cells
2066      - because the bug fix changes two verification experiments anyway (exp5
2067        and plume on slope), change the lateral boundary condition from half slip
2068        to the value of no_slip_sides
2069    o ebm package wasnt quite up to the parallel task. Fixed that.
2070    o Adjoint of EBM package + verification
2071      * TLM OK
2072      * ADM not sufficient accuracy yet (needs further testing)
2073    
2074    checkpoint53b_post
2075    o Commiting new energy balance model to repository
2076      * package is pkg/ebm
2077      * verif. is verification/global_ocean_ebm
2078      * references are in ebm_driver.F
2079    C      * X. Wang, P. Stone and J. Marotzke, 1999:
2080    C        Global thermohaline circulation. Part I:
2081    C        Sensitivity to atmospheric moisture transport.
2082    C        J. Climate 12(1), 71-82
2083    C      * X. Wang, P. Stone and J. Marotzke, 1999:
2084    C        Global thermohaline circulation. Part II:
2085    C        Sensitivity with interactive transport.
2086    C        J. Climate 12(1), 83-91
2087    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
2088    C        Destabilization of the thermohaline circulation
2089    C        by atmospheric eddy transports.
2090    C        J. Climate 7(12), 1870-1882
2091    o Will need long integration testing.
2092    checkpoint53b_pre
2093    
2094    o created pkg/mom_common in preparation for variable viscosity code
2095    o renamed and split ini_mnc_io
2096    o pkg/land: only liquid water can diffuse or run-off
2097    o AIM using land: soil wetness availability account for snow
2098    o added printMapIncludesZeros to EEPARMS namelist
2099    
2100    checkpoint53a_post
2101    o restore TAMC compatiility for exf_constants.h
2102      (no usage of _d in .h)
2103    o Additional storing in KPP in an attempt to fix
2104      TAMC problem with adjoint of KPP code.
2105      (no success...)
2106      Identical code works fine with TAF.
2107    o Fixed verification/natl_box_adjoint experiments.
2108      Initial conditions for Experiments 4 and 5 are now
2109      set to "SEAICE_initialHEFF=0", which is more reasonable,
2110      and hence gives results closer to that of Experiment 2.
2111      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
2112    
2113    checkpoint53
2114    o stable checkpoint with up to date adjoint
2115      TLM tests only run for 1st grdchk at the moment. Its unclear if
2116      this is a code problem or a problem with resetting code for g_
2117      variables that is being autogenerated wrong.
2118      Otherwise:
2119       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
2120       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
2121         are both still in chaos following their security messes.
2122    
2123    checkpoint52n_post
2124    o various build (mostly genmake2) changes including:
2125      - ability to build/run more easily within Cygwin and MacOS X
2126      - more complicated Makefiles with a stronger dependence on Gnu Make
2127    o pkg/seaice modifications
2128      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
2129        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
2130        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
2131      - changed proxy for geostrophic velocity and updated
2132        verification/lab_sea/results/* accordingly
2133      - removed ADI dynamic solver from pkg/seaice
2134      - replaced all occurrences of 1/CSTICE or 1/CSUICE
2135        they caused a segmentation fault under certain circumstances
2136      - removed unused field WATR
2137    o bug fix in exf-package:
2138      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
2139         now reflect that.
2140    o small fixes in the cal-package:
2141      - set reference date to first of January for the 'model'-calendar
2142      - failing of cal_CheckDate in cal_FullDate now actually results in a
2143        warning
2144    o small modifications in exf-package to increase flexibility:
2145      - change climtempfreeze from a constant to a runtime parameter that
2146        is specified in data.exf_clim (default = -1.9)
2147      - introduce runtime parameter windstressmax (default = 2.0) that is
2148        specified in data.exf
2149    o fix in pkg/thsice:
2150      - update Evap (Tsf changes) to be consistent with Latent heat flux
2151      - maintain snow precipitation unchanged (even if Tsf >=0).
2152     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
2153    
2154    checkpoint52m_post
2155    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
2156      this does not change any of the results, because myIter=0 in swfrac always
2157      lead to jwtype=2 (the default anyway), but the call makes little sense
2158      as a default
2159    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
2160    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
2161      atmospheric model (AIM) to use it ; add a "slab ocean" component.
2162    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
2163    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
2164    o extending useSingleCpuIO option to work with new exch2 I/O format
2165      - old-style, missing-tile I/O is still accessible by defining CPP
2166        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
2167    o monitor package can write to NetCDF files and/or STDOUT
2168    o fix re-definition bug in MNC_GRID_INIT_ALL()
2169    o doc/api_reference added
2170      - a framework for building an API Reference Manual using all
2171        the "protex" comments embedded in the code
2172      - see pkg/generic_advdiff, pkg/mnc for examples
2173    o MNC:
2174      - make myThid the last argument for all subroutines
2175      - new default for the grid files: NO halos
2176      - add useMNC and other run-time flags
2177      - separate per-file-group handling of the unlimited dimension
2178      - early initialization of MNC w/ flags read at the eeboot stage
2179        and lookup tables set in initialize_fixed
2180      - write all MNC output to a freshly-created directory
2181    o thermodynamics sea-ice (thsice) is now tested with testreport.
2182    o test exp. advect_cs: use the standard cs32 grid ; update output.
2183    o Added functionality to grdchk:
2184      pick global i,j,k position (or nearest wet) where to perform check.
2185    
2186    checkpoint52l_post
2187    o new land formulation:
2188      a) use ground enthalpy as prognostic variable to ensure exact
2189         energy conservation.
2190      b) account for water temperature and for latent heat of freezing
2191         in all processes (rain, run-off, ground storage)
2192      c) compute surface and ground temperature implicitly.
2193    o aim_v23 modification for new land model:
2194      a) Treat separately land / ocean / sea-ice surface fluxes
2195         to allow implicit computation of land & sea-ice surface temp.
2196      b) add snow precipitation.
2197    checkpoint52l_pre
2198    
2199    o fix problem (when 1 tile is empty) in min/max monitor.
2200    o fix bug in timeAve (u,vZetatave in common block)
2201    o no restoring terms under ice for pkg/seaice
2202    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
2203    o bug fix for pkg/seaice pickups
2204    o change MNC call locations and add coordinate attributes
2205    o mask vorticity at the corner ; affects global_ocean.cs output
2206    o fix ini_curvilinear_grid ; test CS experiments with mpi
2207    o aim.5l_cs: modify sea-ice fraction input file ; update output
2208    o exf: Adding simple range check routine for exf fields after read
2209    
2210    checkpoint52k_post
2211    o removed top-level directory "diags"
2212      - we migrated these functions to pkg/timeave a long time ago
2213    o fixed bug introduced in pkg/monitor
2214    o accuracy ctrlprec = 32 insuffient for gradient checks using
2215      averaged fields (I/O via cost_averages)
2216      -> use ctrl.h in active_file*.F to control I/O precision.
2217    o paramter list of CALL ADTHE_MAIN_LOOP
2218    o added initial do_the_model_io to ecco
2219    o set all ...Freq to zero after cost_final
2220      taveFreq, dumpFreq, pChkptFreq
2221    o MAIN and ECCO differentiability restored
2222    
2223    checkpoint52j_post
2224    o fix nchklev in tamc.h for global_ocean...
2225    o Bringing flow and store directives up-to-date
2226    o Really weird thing!
2227      call do_the_model_io from the_main_loop with parameters
2228      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
2229      TAF places a faulty re-call of initialise_varia
2230      after cost_final call which should not be there!
2231    checkpoint52j_pre
2232    
2233    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
2234      error messages
2235    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
2236    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
2237      debug output
2238    o modfied mdsio_writefield.F to handle non-global files under exch2
2239    o update AIM Cubed-Sphere exp (aim.5l_cs):
2240      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
2241    o update AIM Equatorial Channel exp:
2242      use standard aim_v23 pkg and change the SST fields to be more realistic.
2243    o globalFile now works with exch2
2244    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
2245      mon_vort3.F to make exch2 friendly with >1 tile per cube face
2246    o limit timeave output for hi-res integrations
2247    
2248    checkpoint52i_post
2249    o removed CPP_EEOPTIONS.h from verification/*/code
2250    o updated the tiling for global_ocean_pressure
2251    checkpoint52i_pre
2252    
2253    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
2254      the old pkg/aim).
2255    
2256    checkpoint52h_pre
2257    o shortened offending lines in exch2_send_rx?.template
2258    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
2259    o genmake2: add build & execute test for NetCDF code
2260    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
2261      old grid files, moved CPP_EEMACROS.h to pkg/exch2
2262    o added useSingleCPUIO flag to monitor.F and mon_out.F
2263    o added temporary hack for sea-ice dynamics on the cube:
2264      metric terms are ignored and it is assumed that
2265      there is no sea-ice on cube faces 1, 2, 4, and 5.
2266    
2267    checkpoint52f_post
2268    o added exch2 cube routines to pkg/exch2
2269    o modified hs94.cs-32x32x5 to use it
2270    o added new grid files to hs94.cs-32x32x5
2271    checkpoint52f_pre
2272    
2273    checkpoint52e_post
2274    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
2275      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
2276    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
2277      to work with implicit vertical advection and AB ;
2278    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
2279    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
2280     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
2281    checkpoint52e_pre
2282    
2283    o fix bug in impldiff when Nr=1 or Nr=2.
2284    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
2285    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
2286    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
2287      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
2288    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
2289    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
2290    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
2291    
2292    checkpoint52d_post
2293    o re-tiled many expts to allow comparison in multi-processor mode
2294      - updated output accordingly
2295      - changed hs94.128x64x5 to use intial T from file rather than use the
2296        random number generator
2297    o add infrastructure in model routines for fizhi and gridalt packages
2298    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
2299    o changes to permit hi-res, cubed-sphere, configuration
2300      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
2301      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
2302      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
2303        of surface winds for the cube
2304      (A verification experiment, based on global_ocean.cs32x15, but with
2305       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
2306       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
2307       complete with example surface forcing files and matlab scripts to look
2308       at the output and compare it with that of global_ocean.cs32x15.)
2309    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
2310       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
2311       to conform to the common rule.
2312    o check-in the first version of the coupler + interfaces for multi-components
2313       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
2314       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
2315       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
2316       - ocean and atmos. share the same horizontal grid (no interpolation).
2317       - exchanges between component and coupler is done in forward_step
2318    o new verification experiment, cpl_aim+ocn:
2319       coupled ocean - AIM atmosphere on cs32 grid.
2320    
2321    checkpoint52d_pre
2322    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
2323    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
2324    
2325    checkpoint52c_post
2326    o Fixing OPTIONS files for use of exf:
2327      - ALLOW_ECCO not needed
2328      - ECCO_CPPOPTIONS.h should not be included from
2329        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
2330        as has been the case in the past
2331      - All cal/exf related options are currently set in
2332        single header file. Should remain so until we
2333        agree on a consistent new policy.
2334    o Removed all CPP options for cal package.
2335      cal has no more CPP options.
2336    o modified STOREs in GAD_ADVECTION
2337    o corrected key comp. for passkey
2338    
2339    checkpoint52b_post
2340    o new version: "thsice" of thermodynamic sea-ice pkg:
2341     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
2342     - modify fluxes but do not change theta directly;
2343     - light cleaning of bulk_force pkg (still needed with thsice).
2344     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
2345       + output_thsice.txt to test thsice & bulk_force pkgs.
2346    o put back grid & coriolis monitor output.
2347    checkpoint52b_pre
2348    
2349    o call "do_the_model_io" at the beginning (=> dump initial state)
2350    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
2351    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
2352      (need info on NUMBER_OF_PTRACERS)
2353    o missing PTRACERS headers in some routines
2354    o default tamc.h in pkg/autodiff supposed to crash
2355      to ensure proper customization
2356    
2357    checkpoint52a_post
2358    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
2359      - moved surfaceTendencyTice from pkg/seaice to main code
2360      - subroutine FREEZE_SURFACE now limits only surface temperature
2361        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
2362        => new output.txt for global_ocean.cs32x15 & global_with_exf
2363      - keep the old version of FREEZE for backward compatibility;
2364        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
2365      - corresponding modifs for TAF directives
2366    o added surface flux output variables to TIMEAVE_STATVARS
2367    o time-averaged output for pkg/ptracers
2368    o fix problem with ECCO-related divided adjoint
2369      snapshot file was missing some ad-variables,
2370      but no warning issued by TAF
2371    
2372    checkpoint52a_pre
2373    o some bug fixes for #undef REAL4_IS_SLOW
2374    
2375    checkpoint52 = ecco_c52_e35
2376    o after testing adjoints of checkpoint51u_post
2377    
2378    checkpoint51u_post
2379    o this is the post-merge tag of the ecco-branch
2380      (needs another clean checkout and re-testing)
2381    o various natl_box_adjoint configs and results
2382      but no input fields
2383    o obcs adjoint not yet merged!
2384    o adding ECCO global 1x1 and 2x2 degree configs
2385    o updated/extended some store directives for seaice
2386    o pkg/ecco now containes ecco-specific part of cost function
2387    o top level routines the_main_loop, forward_step
2388      supersede those in model/src/
2389      previous input data.cost now in data.ecco
2390      (new namelist ecco_cost_nml)
2391    o in ctrl/ cleaned some cross-dependencies and updated CPP options
2392    
2393    checkpoint51t_post
2394    o this is the pre-merge tag of the ecco-branch
2395    
2396    checkpoint51s_post
2397    o cleanup: removed various obsolete #define-s
2398    o pkg/grdchk
2399      - renamed 'ph-grd 3' to 'grad-res'
2400      - merged from ecco-branch
2401        (remaining bug fixes for obcs gradient checks)
2402      - additional high-precision output for testreport
2403        (grep for 'precision_grdchk_result')
2404    
2405    checkpoint51r_post
2406    o cleaned up or removed CPP_OPTIONS.h files
2407    o updated results for some of the tests to reflect the new
2408      optfiles (-ieee: -O0 instead of -O3)
2409    
2410    checkpoint51q_post
2411    o cd_code:
2412      - moved cd_scheme.F -> cd_code_scheme.F
2413      - separate read_checkpoint from cd_code_ini_vars.F
2414      - separated cd_code part from write_checkpoint
2415      - updated AD_SOURCE, generated .flow
2416      - added CD_CODE_VARS.h to the_main_loop
2417      - Moving cd_code specific store dir.s to pkg/cd_code
2418    o ctrl package totally restructured
2419      - pack/unpack now optional and decoupled from
2420        xx_/adxx_ I/O
2421      - ctrl_pack/unpack cleaned
2422        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
2423      - confined inclusion of AD_CONFIG.h to where necessary.
2424    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
2425    
2426    checkpoint51p_post
2427    o create initial cd_code package
2428      - WARNING: the initialization of fields within packages
2429        is broken because INI_FIELDS (where READ_CHECKPOINT is
2430        called) is called *before* PACKAGES_INIT_VARIABLES.
2431        This seems to be backwards since
2432        1) its important to initially zero the entire field including
2433           the "halo" region
2434        2) zeroing needs to be done *before* reading pickup info
2435           and the pickup call might or might not happen in any
2436           particular run
2437      - this needs an overhaul for R2
2438    o cleanup verification/*/code/GMREDI_OPTIONS.h
2439    o cleanup testreport
2440    
2441    checkpoint51o_post
2442    o bringing AD-related verif's up to date with genmake2
2443      - carbon/
2444      - global_ocean.90x40x15/
2445      - hs.94.1x64x5/
2446      - (front_relax/ )
2447    o (more) consistent directory structure for AD-related verif.'s
2448    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
2449    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
2450    o bug fix in find_alpha.F for MDJWF:
2451      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
2452        change rho -> rho-rhoConst
2453      - replace call find_rho to find_rhonum
2454    o initialisation of rFlx extended to full array (required by TAF)
2455      and shifted to thermodynamics
2456    o removed PTRACERS.h in ptracers routine
2457    o added surfacetendencyPtr to S/R parameter list pracers_forcing
2458    o Correcting initialisations for fVerU, fVerV.
2459    o helping TAF to recognize dependency on kUp for
2460      fVerU, fVerV
2461    o Replacing delZ by delR in pkg/ctrl/
2462    checkpoint51o_pre
2463    
2464    o undid all of cp51 pending some cleanups and discussion
2465    o added the [#include "AD_CONFIG.h"] statement to all files that need
2466       it for adjoint/tl #defines
2467     o re-worked the build logic in genmake2 to support AD_CONFIG.h
2468     o removed tools/genmake since it no longer works
2469    
2470    checkpoint51n_post
2471    o modifications to make FREEZE flux visible to pkg/kpp
2472      - moved surfaceTendencyTice from pkg/seaice to main code
2473      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
2474      - subroutine FREEZE now limits only surface temperature
2475        (this means new output.txt for global_ocean.90x40x15,
2476         global_ocean.cs32x15, and global_with_exf)
2477    o added surface flux output variables to TIMEAVE_STATVARS
2478    
2479    checkpoint51n_pre
2480    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
2481    o added [#include "AD_CONFIG.h"] to all files that use the following
2482      defines:
2483      - ALLOW_ADJOINT_RUN
2484      - ALLOW_TANGENTLINEAR_RUN
2485      - ALLOW_ECCO_OPTIMIZATION
2486    
2487    checkpoint51m_post
2488    o incorporating changes to get TAMC/TAF working in genmake2
2489      - added new TAMC/TAF targets to the Makefile
2490      - various cleanups related to package handling
2491      - these changes should have no impact on the forward model
2492    
2493    checkpoint51l_post
2494    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
2495     - faster algorithm for cal_addtime.F
2496     - higher precision arithmetic, where needed
2497     - pkg/exf *startdate variables changed from calendar date to
2498       model integration time
2499    
2500    checkpoint51l_pre
2501    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
2502    o enable to apply restoring on S & T only in a latitude band.
2503    o update output (external_forcing_surf modif. change truncation errors)
2504       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
2505    
2506    checkpoint51k_post
2507    o change default to: useNHMTerms=.FALSE.
2508     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
2509       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
2510     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
2511        exp1, ideal_2D_oce
2512     - change data file of oceanic exp (leave the results unchanged for now)
2513       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
2514    o set gravitySign automatically according to the vertical coordinate used
2515      (and change sign: back to "logical" value: +1 when R increases downward)
2516    o added an include barrier to the default CPP_OPTIONS.h and
2517      removed the #include "PACKAGES_CONFIG.h" from it
2518    o fix a bug in mom_fluxform (from chk51j_post)
2519    
2520    checkpoint51j_post
2521    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
2522    o adjusted some flow directives (dynamics, thermodynamics)
2523    o added cubed-sphere case to test cost function
2524    o heckpoint_lev?_directives.h now include
2525      pkg-specific directives, whenever those are enabled.
2526    o Moving pkg-specific flow directives to corresponding pkg
2527      Moving pkg-specific differentiation list to corresponding pkg
2528      Moving pkg-specific checkpoint-lev storing to corresponding pkg
2529      ---> conventions are
2530           - pkg_ad.flow
2531           - pkg_ad_diff.list
2532           - pkg_ad_check_lev?_dir.h
2533    
2534    checkpoint51i_post
2535    o merge of the branch-genmake2
2536      - knowingly breaks the older genmake
2537      - automatic generation of all ALLOW_${PKG_NAME} defines
2538      - new testreport supersedes older testscript
2539    o large number of package inclusion and header cleanups
2540    checkpoint51i_pre
2541    
2542    o new output for adjoin of global ocean vector invariant
2543    o fix for checkpoint of thermodynamic seaice and bulk_force
2544    o Steph gchem various cleanups
2545    
2546    checkpoint 51h_pre
2547    o fixed some single quotes
2548    o modify gchem pkg to be more versatile
2549    o modifications to clean up dic pkg
2550    o add pkg/cfc
2551    
2552    checkpoint51g_post
2553    o provide links for ARPACK and ADM*TLM
2554    o start removing verification/vero/
2555    o update AD-related stuff
2556      (in particular some IF-statements in model/src/ routines)
2557    o adding to verification/global_ocean.90x40x15/ adjoint of
2558      vector invariant setup
2559    
2560    checkpoint51f_post
2561    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
2562    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
2563      of tracer Green's fucntions for ocean inversion project.
2564    
2565    checkpoint51f_pre
2566    o Added on-the-fly spatial interpolation capability
2567        "USE_EXF_INTERPOLATION" to pkg/exf.
2568      - This is a temporary Cartesian-grid hack until
2569        the super-duper ESMF coupler becomes available.
2570      - See verification/global_with_exf/README for usage example.
2571      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
2572        flags and modified pkg/seaice accordingly.
2573    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
2574        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
2575        non-local transport term.
2576    
2577    checkpoint51e_post
2578    o pkg/mom_vecinv:
2579      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
2580      - add time-ave diagnostic of vorticity advection.
2581    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
2582    o atmospheric geopotential: - include water vapor effect;
2583                                - use p^kappa in p* scaling.
2584    o land pkg: read initial state from files.
2585    o AIM : add stratospheric drag in the upper level
2586    
2587    checkpoint51d_post
2588    o change function ILNBLNK (=> last non-blank char.) to return zero
2589      (instead of the string length) when the string. char is empty
2590    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
2591    o modif's to restore TAMC compatibility
2592      - avoid "_d" constructs in PARAMETER declarations
2593      - avoid interrupting lines by comment lines
2594    o Use cluster local disks for purely local I/O
2595      vs. globally visible disks needed for ctrl stuff
2596      (merged from ecco-branch)
2597      - new active_file_loc... and mdsio_..._loc routines
2598      - affected packages: autodiff, ctrl, grdchk, mdsio
2599    
2600    checkpoint51c_post
2601    o introducing integer flag debugLevel
2602      - debLevZero: suppress all output
2603      - debLevA: standard
2604      - debLevB: equivalent to current debugMode=.TRUE.
2605    o introducing pathname variable mdsioLocalDir for mdsio
2606      that can be specified at runtime
2607      (relevant for cluster I/O to local disk)
2608    `
2609    >>>checkpoint51b_post
2610    adjoint of ptracers
2611    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
2612    o extended state in checkpoint_lev?, etc.
2613    o alternative ctrl/cost with tr1 or ptracer
2614    o new comlev1_bibj_ptracers
2615    o new ptracers.flow
2616    o made ptracers_forcing same as external_forcing_s
2617    o added verification for adjoint with ptracers
2618      - adm. grdchk fail so far
2619      - tlm. grdchk OK
2620      - checked tapelev/comlev recomputations: OK
2621    <<<checkpoint51b_pre
2622    
2623    checkpoint51a_post
2624    o added code for biogeochemistry package
2625      - new pkgs: dic, gchem
2626      - new subroutine in ptracers
2627    o modify code for biogeo packages
2628      - in model/src and pkg/ptracers
2629    
2630    checkpoint51
2631    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
2632      - autodiff, ctrl, exf, grdchk, seaice
2633      kept separate packages
2634      - cost, ecco, obcs
2635    o updating verification/internal_wave, verification/lab_sea
2636      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
2637    
2638    checkpoint50i_post
2639    o Preparing next differentiable checkpoint and sync
2640      of MAIN vs. ecco-branch
2641      - 1st step: this one is differentiable
2642      - 2nd step: next(! not this) checkpoint will have updated packages
2643                  from ecco-branch)
2644    
2645    checkpoint50h_post
2646    o new package "land": provide surface BC for AIM.
2647    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
2648    o AIM: use true log-P extrapolation for near surface temp (= as in
2649        F.Molteni paper) ; update aim.5l_cs output.
2650    o New variable in PARM03 for more flexible pickups
2651    o somewhat cleaned package initialisation sequence for
2652      ctrl/ cost/ ecco/ in packages_... routines
2653    
2654    checkpoint50g_post
2655    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
2656      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
2657      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
2658        made the default because of faster convergence than ADI
2659    
2660    checkpoint50f_post
2661    o exf totally restructured
2662      - replaced all exf_set_ routines by one generic exf_set_gen.F
2663        and made sure it's still differentiable
2664      - split exf_getffields.F into new exf_bulkformulae.F
2665      - exf_inscal_/exf_outscal_ suffixes consistent with field names
2666      - updated adjoint/makefile and relevant verif. accordingly
2667    
2668    checkpoint50f_pre
2669     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
2670          + change Evap over land. (update aim.5l_cs output)
2671     o added missing .cvsignores and made uniform across expts
2672     o changed configuration of tidal_basin_2d expt
2673     o added pkg/debug functions for tracing code in fatal crashes
2674     o tidied pkg/monitor to use MONITOR_OPTIONS.h
2675     o new fn in pkg/monitor to stop model if solution grows too big
2676     o removed lots of single quotes from comments
2677    
2678    checkpoint50e_post
2679    o make KPP work with PTRACERS
2680     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
2681       nearly a copy of kpp_transport_s
2682     - there is no analogue to SurfaceTendencyS, so I have to use
2683       gPtr(of the surface layer) instead
2684    o add a new platform SunFire+mpi (SunFire 15000) to genmake
2685    checkpoint50e_pre
2686    
2687    checkpoint50d_post
2688    o change kpp output from multiple-record state files to single-record state
2689      files analogous to write_state.F
2690    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
2691      analogous to the cg2d-related output.
2692    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
2693      so that writing to internal file fn (with length 512) fails.
2694    checkpoint50d_pre
2695    
2696    checkpoint50c_post
2697    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
2698    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
2699    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
2700    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
2701    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
2702    
2703    checkpoint50c_pre
2704    Merging from release1_p13:
2705    o bug fix for pkg/seaice dynamic solver
2706    o Added SEAICE_initialHEFF to pkg/seaice
2707    
2708    checkpoint50b_post
2709    o store u*,v* in gU,V instead of in guNm1,gvNm1
2710    o in order to put the momForcing out of the Adams-Bashforth:
2711      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
2712      to timestep.F
2713    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
2714    o re-generate output for highly sensitive test-exp:
2715       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
2716    
2717    checkpoint50b_pre
2718    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
2719    o corrected CPP option mismatch in exf_Bulk... functions for case
2720      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
2721    
2722    checkpoint50a_post
2723    o Bug fix for merging between c50 and KPP.
2724      ikey was passed from thermodynamics to kpp_calc via
2725      common block rather than being recomputed in kpp_calc,
2726      in contradiction with new key itdkey.
2727      New key ikppkey created, and tamc.h headers updated.
2728    
2729    checkpoint50
2730    - 2nd step of merge with ecco-branch:
2731      merge changes in ecco-branch back into main trunk
2732    - bug fix in find_alpha
2733    - more storing in gmredi_calc_tensor.F, kpp_routines.F
2734    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
2735    - merged some sliced AD support routines
2736    
2737    checkpoint49
2738    merged from ecco-branch:
2739    o exf:
2740      - Enable initialisation of forcing fields to constant
2741        (runtime) values.
2742      - in exf_getffields.F
2743        Reduce i-/j-loop to interior domain, discarding overlaps.
2744        That also fixes wrong TAF-key computations for key_1, key_2
2745        with bulf formulae.
2746      - exf_init.F modify #ifdef for exf_init_evap
2747      - exf_getffieldrec.F, ctrl_getrec.F
2748        The following INT-usages are not safe:
2749          fldsecs  = int(fldsecs/fldperiod)*fldperiod
2750          fldcount = int(fldsecs/fldperiod) + 1
2751        and were modified.
2752    o autodiff: checkpoint_lev...
2753      - updated storing for bulk formulae (some arrays were missing)
2754      - added state for seaice package
2755      - synchronized with main branch
2756    o DIVA:
2757      Modif.s in
2758      - the_main_loop.F
2759      - the_model_main.F
2760      and added cost_final_restore.F cost_final_store.F
2761      o With these changes, it is possible to fully separate
2762        the first forward run to compute the cost function (mdthe_main_loop)
2763        and adjoint runs over individual DIVA intervals (adthe_main_loop)
2764        into separate model executions.
2765        This enables better tuning of DIVA to given queue sizes.
2766      o Loss of cost function value in consecutive DIVA runs is
2767        fixed by storing to 'costfinal' file.
2768      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
2769        beginning/end of adjoint integration is accounted for.
2770      The current changes apply to TAF-1.4.26.
2771      TAF has one remaining bug, requiring one manual change
2772      (see MITgcm manual).
2773    o cal: synchronized between MAIN and ecco-branch
2774    
2775    checkpoint48i_post
2776    o Changes to restore differentiability of code w.r.t. previous tag
2777      (mostly adding new routines to make list and replacing
2778      pressure by totPhiHyd).
2779    o Updated and merged grdchk package
2780      - has both ADM and TLM checks
2781      - works for single- and multi-proc.
2782      - output cleaned
2783      - worked successfully for parallel DIVA
2784    o genmake:
2785      - Adding -platform=SP4
2786      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
2787    o Modif. for DIVA:
2788      ctrl_unpack should not be called in intermediate DIVA interval.
2789      (similar thing would apply for active files such as
2790      tbar, sbar, psbar, which should not be reinitialised;
2791      only relevant for ecco-branch)
2792    
2793    checkpoint48h_post
2794    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
2795    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
2796    o Added SEAICE_initialHEFF to pkg/seaice
2797    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
2798    
2799    checkpoint48g_post
2800    --- EOS:
2801    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
2802      store total Potential in totPhyHyd for diagnostics & EOS.
2803    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
2804    --- Pressure/geopotential gradient:
2805    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
2806    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
2807      ( changes results of global_ocean_pressure )
2808    o NLFS + z-coord.: add eta*Rho' contribution.
2809    o accurate phiHyd when using interface-W at the middle between 2 centers
2810     ( changes results of ideal_2D_oce )
2811    o includes r* 2nd term in potential gradient.
2812    
2813    checkpoint48f_post
2814    Merging from release1_p12:
2815    o Modifications for using pkg/exf with pkg/seaice
2816      - improved description of the various forcing configurations
2817      - added basic radiation bulk formulae to pkg/exf
2818      - units/sign fix for evap computation in exf_getffields.F
2819      - updated verification/global_with_exf/results/output.txt
2820    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
2821      (SBO) core products, including oceanic mass, center-of-mass,
2822      angular, and bottom pressure (see pkg/sbo/README.sbo).
2823    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
2824      to avoid negative values in shallow regions.
2825      - updated verification/natl_box/results/output.txt
2826      - updated verification/lab_sea/results/output.txt
2827    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
2828    o Added useSingleCpuIO option (see PARAMS.h).
2829    o Updated useSingleCpuIO option in mdsio_writefield.F to
2830      work with multi-field files, e.g., for single-file pickup.
2831    o pkg/seaice:
2832      - bug fix in growth.F: QNET for no shortwave case
2833      - added HeffFile for specifying initial sea-ice thickness
2834      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
2835    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
2836      kpp_transport_t.F, forward_step.F, and the_main_loop.F
2837    o pkg/seaice:
2838      - adjoint-friendly modifications
2839      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
2840    
2841    checkpoint48e_post
2842    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
2843    o dynamics: change definition of computational domain & adapt mom_fluxform
2844      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
2845    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
2846        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
2847        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
2848        global_ocean.90x40x15 global_with_exf global_ocean_pressure
2849        inverted_barometer solid-body.cs-32x32x1
2850      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
2851    
2852    checkpoint48d_post
2853    o in preparation for r*:
2854     a) use pre-computed gradient of hydrostatic potential:
2855        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
2856     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
2857        => affects results of glob_oce_pressure (different truncation error)  
2858      update output.txt of ideal_2D_oce & global_ocean_pressure
2859    
2860    checkpoint48d_pre
2861    o in preparation for r*:
2862      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
2863      pass the 2 comp. of the grad. as arguments to momentum S/R.
2864      but for the moment, only used if it does not change the results.
2865    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
2866    
2867    checkpoint48c_post
2868    Modifications in treatment of initial flux forcing controls
2869    to avoid extra storing of flux fields.
2870    
2871    checkpoint48c_pre
2872    o Added tidal_basin_2d experiment (currently 1D!)
2873    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
2874    
2875    checkpoint48b_post
2876    o r* coordinate added in #ifdef NONLIN_FRSURF block.
2877     (modification to pressure gradient not yet implemented)
2878    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
2879      (for U & V) that are used for vertical advection of momentum.
2880    
2881    checkpoint48a_post
2882    o In preparation for r*, use temp. array to compute vertical transport
2883       in flux-form momentum pkg. => change results of few test-exp.
2884      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
2885                        lab_sea, natl_box & plume_on_slope
2886    
2887    checkpoint48
2888    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
2889    
2890  checkpoint47j_post  checkpoint47j_post
2891  o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.  o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
2892  o moved adexch from forward_step to addummy_in_stepping  o moved adexch from forward_step to addummy_in_stepping

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