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revision 1.191 by edhill, Tue Oct 21 21:14:08 2003 UTC revision 1.913 by jmc, Wed Nov 28 16:52:16 2007 UTC
# Line 1  Line 1 
1  $Header$  $Header$
2    $Name$
3    
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
8      all experiments pass when compile with un-initilised var. checking option.
9    o added pkg/salt_plume
10    o script to test restart (for now, in MITgcm_contrib/jmc_script)
11    o pkg/seaice: new read/write pickup version.
12      read meta file and write only fields which are needed to restart.
13      ( same logic as main pickup file ; also using pickupStrictlyMatch )
14    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
15    o lab_sea.hb87: modify the domain & update output.hb87.txt :
16      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
17      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
18      process. Fixed here by closing the domain at the Northern boundary.
19    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
20    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
21      a set of consecutive levels in/from a 3-D array.
22    o pkg/ptracers:
23      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
24      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
25    
26    checkpoint59j
27    o in pkgs: dic, obcs, offline, rbcs:
28      standard way to compute coeff. for time interpolation between 2 time reccords
29      which retains full precision (& make results less dependent on compiler).
30      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
31    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
32      packages instead of reading ice cover and wind speed separately
33    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
34     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
35      to allow to compile customized code before the update)
36    o cleaning-up:
37      - fix CPP instruction syntax in pkg/obcs
38      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
39        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
40      - fix some threads issue in IO parts.
41    o pkg/dic:
42      - add tons of "_d 0" (--> much better testreports !)
43       and then update outputs of tutorial_global_oce_biogeo
44    o pkg/mom_fluxform:
45      add a special version of momentum advection intended to conserve momentum
46      next to a bathymetry step or a coastline edge. (default = off = #undef)
47    o new read/write pickup version:
48      - for now, only implemented for main (mdsio) pickup file.
49      - write out only what is needed to restart; merge pickup_nh , pickup_ph
50        and main pickup together.
51      - read meta file; read only what is needed to restart; stop if a field
52        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
53        if it make sense (even if the restart is not perfect).
54      - if no meta file, assume that pickup to read corresponds exactly to
55        a pickup that would currently be written.
56      - read pickup written in the old format (until checkpoint59i) if it
57        recognizes an old meta file (no field-list).
58      - add a meta file in exp. which starts from a pickup: 2 cases:
59        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
60         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
61        b) a meta file describing the content of the associated pickup file
62         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
63    o pkg/mdsio & pkg/rw:
64      - new routine to read a meta file ; new set of routine to read
65        Multiple-fields file (with meta file).
66    o added open boundary conditions capability for seaice
67        HSNOW, HSALT, UICE, and VICE
68    
69    checkpoint59i
70    o adjoint:
71      * fix multiDimAdvection adjoint
72        (partial recomputation problem by TAF for fVerT(:,:,kDown)
73        and comlev1 size definition (maxpass vs. max. number of tracers)
74      * verification/global_ocean.90x45x15 adjoint now tests
75        NLFS and multiDimAdvection using DST3 (=30)
76      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
77    o pkg/kpp: add "_d 0" to real constant (if missing);
78      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
79      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
80    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
81      for internal parameters related to restart process (formerly from PARAMS.h)
82      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
83    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
84      as argument. (only atm2d & obcs write_pickup have not yet been updated)
85    o pkg/monitor:
86      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
87      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
88      - account for deep Atmosphere factor and density factor (anelastic)
89    o added open boundary conditions capability for seaice HEFF and AREA
90    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
91      thermodynamics
92      - requires a little reorganization, which affects the testreport results
93        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
94        so that now the conservative form is tested
95      - add a few comments
96    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
97    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
98    o add new diagnostics to seaice: advective, diffusive fluxes (only for
99      multidim-advection, for scheme 2 they are not filled) and transports,
100      thermodynamic growth rates
101    o change units of EmPmR (inside the code, + within coupling interface)
102      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
103      Affects results @ truncation level (cg2d match) and update output of
104       experiments: lab_sea(6), global_ocean.90x40x15(10),
105      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
106      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
107      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
108      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
109    
110    checkpoint59h
111    o pkg/exf:
112      - improve vectorization by moving if-statement out of loops in
113        exf_mapfields, exf_radiation
114      - exf_bulkformulae.F: introduce 2D fields and vectorize code
115    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
116    o testreport:
117      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
118        monitor & update offline_exf_seaice exp. output.
119      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
120    o pkg/seaice:
121      - bug fix in the evp solver: boundary conditions were affected be
122        masking of zMax/zMin (changes results)
123      - minor bug fix in boundary conditions in seaice_calc_strainrates
124        (changes results for no_slip)
125      - seaice_lsr.F: make interpolation of eta dependent on boundaries
126      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
127      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
128        stress formulation and no-slip boundary conditions
129    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
130      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
131    o pkg/seaice: a first HSALT time stepping equation has been checked in
132    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
133      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
134      without requiring DO-IF statements
135    o pkg/thsice:
136      use continuous power-law function for partition of energy between lateral
137      melting/freezing and thinning/thickening ; old code using step function
138      still available with #undef THSICE_FRACEN_POWERLAW
139      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
140    o testreport: change AD testing : check against results/output_adm.txt
141      using same scripts as for forward test.
142    
143    checkpoint59g
144    o adjoint testing: in preparation for changing testreport:
145      - output format: cost and grad written on separated lines
146      - ad output results in directory "results" (instead of "results_ad")
147    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
148    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
149    o pkg/ecco: allow user defined cost function contributions
150    o testreport:
151      Allow to choose (per experiment) the list of tested output variables
152       and the main variable (used to issue a pass/FAIL ) ;
153      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
154      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
155      Also modify printing of summary:
156       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
157       b) echo the list of tested variables in the individual summary.txt of
158          each experiment.
159    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
160      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
161      (but still depend on the tile decompostion of the domain).
162    o pkg/seaice: change a discretization detail to make the B-grid code
163      "more symmetric". This change is likely to remove all "ridges/leads" that
164      where quasi-aligned with the grid in B-grid solutions. It may also be
165      the solution to the stress coupling issues with the B-grid.
166    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
167      remove .cvsignore from input dir. (since testreport no longer run here).
168    o pkg/thsice:
169     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
170     - fix reshaping of sea-ice just after advection:
171       melt all the ice only if ice-volume is too small.
172     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
173       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
174     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
175    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
176      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
177    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
178      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
179      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
180      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
181      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
182      -> update output.txt
183    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
184     this affects truncation error: -> update output.txt of exp:
185      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
186      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
187    
188    checkpoint59f
189    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
190    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
191      a bounded range (in forward mode)
192    o pkg/ecco, ctrl, autodiff and mom_common:
193     internal parameter controls, completements of implementations
194    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
195    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
196      (not seem any difference in testing results).
197    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
198       at face corners.
199    o pkg/generic_advdiff:
200     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
201      loop range indices for computing vertical advection tendency
202      and do the calculation in the interior only (no overlap) ;
203      for now, only implemented for SOM advection (to save CPU time).
204     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
205    o exch2 adjoint
206      First set of changes:
207      - add exch2 hand-written adjoint templates
208      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
209        This will require cleanup in pkg/autodiff/*.F
210        (changed routines currently kept separate in verif. code/)
211      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
212        that used to hide exch2 or cubed-sphere specific code
213        (commented via 'cph-exch2')
214    o pkg/seaice
215      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
216    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
217       output of global_ocean.cs32x15.thsice .
218    
219    checkpoint59e
220    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
221      for B-grid vector (not yet tested) and C-grid vector (<- only used
222      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
223    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
224      (#ifdef ALLOW_SALT_PLUME)
225    o gather_2d/scatter_2d: removed halo regions
226    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
227      scheme and the corresponding test case (under front_relax dir). For now,
228      only available with Skew-flux form and not yet tested in realistic set-up.
229      adjoint: store directives updated, but gradient checks deteriorated,
230      so maybe GM/Redi adjoint is now broken.
231    o seaice adjoint
232      * add AREA, HEFF, HSNOW as control variable
233        (should not change lab_sea results)
234      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
235    o pkg/seaice:
236      * added computation of saltFlux in seaice_growth;
237        For time being, sea ice salinity is assumed constant
238        contribution of snow flooding to freshening of sea ice is neglected.
239        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
240        defaults to 0.0 in order to maintain backward compatibility.
241        Typical values for SEAICE_salinity are 4 to 10 g/kg.
242      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
243      * added SEAICE_availHeatFrac, which specifies fraction of surface level
244        heat content used to melt or grow ice
245      * commented out cap of HICE: it helps keep ice thinner
246      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
247      * applied OBCS T/S mask to HEFFM sea ice mask
248    
249    checkpoint59d
250    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
251     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
252     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
253    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
254     and change default value of parameter "GM_Small_Number";
255     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
256       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
257       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
258    o pkg/ecco: cost function when applying pkg/smooth to controls
259    o pkg/ctrl: add forcingPrecond run time parameter
260    o pkg/seaice:
261     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
262     - fix bug in metric terms of u-equation in LSR solver (implicit part),
263       changes verification/lab_sea
264     - rearrange implicit part of u-equation in LSR solver to make it easier to
265       read, understand, and debug. This causes changes at the truncation level.
266     - fix (serious) bug in the boundary conditions (sign error in the implicit
267       part) of the LSR solver. Changes all LSR results.
268     - fixed problem with HSNOW initialization to avoid thick snow when AREA
269       is initilized with small values - does not change lab_sea results.
270     - added HsnowFile initialization capability
271    o pkg/smooth: addition to model/src and pkg/ctrl so allow
272     initialization of pkg/smooth and application to control vector
273    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
274    o dependencies: pkg/profiles requires pkg/cal
275    o pkg/profiles:
276     - added option ALLOW_PROFILES_GENERICGRID
277         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
278         that interpolation information (grid points and coefficients) is provided
279         within the netcdf input files.
280         -> sample matlab scripts can be found in MITgcm_contrib/gael
281         that allow you to prepare netcdf input files.
282     - also modified: cleaner include statements, cleaner error print statements,
283       cleaner stops when error, and more tests of the netcdf input files consistency.
284    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
285    o pkg/seaice:
286     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
287       requires a new routine: seaice_diagnostics_fill.F
288     - make sure that seaice does not move if not forced (pressure replacement
289       method, Hibler and Ip, 1995), changes results
290     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
291     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
292       It is turned off by default (=-1.), because it changes the results.
293     - make it possible to read AREA from a file, too.
294    
295    checkpoint59c
296    o add S/R and diagnostics for oceanic mixed-layer depth
297    o move GMRedi call after all vertical mixing schemes (including KPP)
298    o pkg/thsice:
299     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
300      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
301    o pkg/obcs:
302     - bug fix for balance code
303    o pkg/seaice:
304      - allow values of SEAICE_elasticParm > 1
305      - add new parameter SEAICE_evpTauRelax as an alternative
306        to SEAICE_elasticParm
307      - make lsr boundary conditions free slip (by default), changes result
308      - add code for no slip boundary conditions for lsr
309      - set minimum of zeta to zero (and not 4e8) (changes results)
310      - add a cap on AREA after advecting AREA if seaice_growth is not called
311    o change calculation of Visbeck K:
312      - no longer depend on tapering scheme; instead, compute slope (limited
313        by GM_maxSlope). this is equivalent to what was comuted before with
314        clipping or linear tappering.
315      - fix vertical averaging (wrong by 1/2 level)
316      - leave the old version (but will not be maintained) within
317        #ifdef OLD_VISBECK_CALC / #endif
318      - update output of exp. ideal_2D_oce
319    o change error catch in calc_r_star to improve vectorization
320    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
321      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
322    o adjoint:
323      Re-organized adjoint checkpointing according to Matt Mazloff
324      (but with modifs/completions/cleanups)
325      Storing is now bundled into large arrays to optimized I/O
326      (and second step in cleanup of the_main_loop)
327    
328    checkpoint59b
329    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
330      - export/import (between ocean & coupler) fields needed for ocean DIC.
331    o pkg/seaice:
332      - get rid of three more exchanges seaice_calc_viscosities (required
333        different loop boundaries in seaice_lsr and seaice_ocean_stress)
334      - bug fix in seaice_ocean_stress (update of lab_sea required)
335      - reduce loop boundaries to necessary minimum also in seaice_evp
336      - go back to the old way of computing deltaC/Z as the adjoint likes that
337        better
338    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
339      passive tracer to an Age Tracer) + update output.txt
340    o pkg/exf:
341      - implement A-grid / C-grid selection for wind-stress input files.
342      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
343      for now, in exf_bulk_largeyeager04.F only :
344      - change implementation for case where windspeed + 2. components wind-stress
345        are read-in. AND use rhoConstFresh to convert evap.
346    o pkg/seaice:
347      - use correct EXCH_UV for wind-forcing (on A-grid).
348      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
349        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
350    o pkg/exf:
351      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
352      EXF_INTERPOLATION:
353      - merge global_with_exf/code version of exf_interp_read.F
354        to the main code ;
355      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
356        reading the file ; Important: This options needs to be defined to recover
357        previous code.
358        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
359      - no longer loose real*8 precision along the way when using exf_iprec=64.
360    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
361      - change discretisation of evp-solver in order to avoid another exchange
362        (changes lab_sea) and clean up a little
363      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
364        help the adjoint (this also changes the results slightly)
365      - add a few "_d 0" where they had been missing in seaice_evp.F
366      - cleaning up: remove unused seaice_calc_rhs.F
367    o pkg/exf: some cleaning-up:
368      - change various "constants" into runtime parameters
369      - cleaned-up Large&Yeager04 routine which should eventually
370        replace exf_bulkformulae.F (changed names of S/R and CPP)
371        and merged various ALLOW_ATM_WIND options
372     only used with thsice pkg (in thsice_get_exf.F):
373      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
374        which are used when useStabilityFct_overIce=TRUE (= the default)
375      - change default values of ice & snow emissivity and scale downward LW
376        by ice & snow emissivity.
377    o pkg/thsice:
378     fix few little problems, in thsice_calc_thickn.F:
379      - growth vertically (and not laterally) if iceFrac == iceMaskMax
380      - melt only laterally if hIce < hThinIce (as the comments say)
381      and in thsice_extend.F:
382      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
383      - start to form ice as soon as the minimum ice-volume is reachable.
384     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
385      and cpl_aim+ocn
386    o pkg/kpp
387     - move computation of surface related input fields to KPP into a new
388       subroutine kpp_forcing_surf.F
389     - remove wrong (within bi,bj loops) EXCH calls.
390     - little cleaning (add argument myThid in last position, cvs header ...)
391     - for now, fix conservation problem by exchanging KPPviscAz (may not
392       be the best fix)
393    o pkg/seaice
394     - check for inconsistent evp parameter/cpp-flag combination
395     - remove leftover errIO flat for obsolete name list error handling
396    o OpenAD
397     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
398    
399    checkpoint59a
400    o pkg/seaice: some parameter clarifications and a little bit of clean up
401    o pkg/thsice: rename run-time parameters:
402       himin       -> hIceMin
403       himin0      -> hThinIce
404       hihig       -> hThickIce
405       i0          -> i0swFrac
406       transCoef   -> bMeltCoef
407       frac_energy -> fracMelting
408      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
409       with default values (for now) that do not change the results.
410      remove old version of thsice vars advection in pkg/seaice.
411    o in FFIELDS.h:
412      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
413      - make pLoad & sIceLoad always available (but still only used if
414         ATMOSPHERIC_LOADING is #define).
415    o pkg/kpp: replaced _KPP_RL with _RL
416    o bug fixes for vertical diffusivity computations when both KPP and
417        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
418        are no longer updating the vertical diffusivity array
419        (passed as argument) but are (re-) setting those arrays.
420    o pkg/seaice: fix bug in evp solver, while doing that
421      - change (improve?) discretization of stress computations for both
422        cgrid-lsr and evp solver
423      - add a new routine to compute strain rates
424      - the above changes lab_sea results
425      - add no slip conditions for evp solver (off by default), lsr-version
426        may follow
427      - fix exchange for shear at Z-points (does not change lab_sea)
428      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
429        (to force the user to pick a time step since there is not "safe" way
430        of choosing it)
431      - add principal stress diagnostics
432      - rearrange fields for evp a little to avoid having to call a: too many
433        exchanges and b: exchanges for stress trensor components which we do
434        not have.
435      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
436        of evp, complete rewrite for lsr case (latter is does not yet work
437        in all cases)
438    o pkg/kpp: add code to have mixing in shelf ice caverns
439      - add myThid to all kpp routines (long overdue)
440    
441    checkpoint59
442    o pkg/exf:
443      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
444        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
445      - move exf header files from lower_case.h to UPPER_CASE.h ;
446        add missing cvs Header & Name
447      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
448      - add namelist param. selectStressGridPosition, exf_monFreq
449      - retire many _CLIM routines, and remove data.exf_clim
450        + params moved to data.exf
451        + climsst, climsss now handled by exf_set_gen, i.e.
452          climss?period=0 refers to constant field,
453          climss?period=-12 to monthly forcing
454      - split up namelists in data.exf
455    o pkg/seaice:
456      - remove seaice_exch and seaice_exch_uv
457      - remove superfluous exchange of theta
458      - add myThid to seaice_budget_ocean/ice
459      - add new interface for atmospheric wind forcing (C-grid only)
460        + new routine
461        + two new field (taux, tauy for stress over ice)
462        + removed one global field (DAIRN) for C-grid case only
463    o pkg/thsise
464      - 2nd set of modifs for thsice adjoint in conjunction with exf
465    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
466    
467    checkpoint58y_post
468    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
469      vertical diffusivity, similar to that in MOM4; turned on using
470      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
471      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
472    o Added capability for 3D specification of background vertical diffusion
473      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
474      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
475      "data" file that contains the 3D vertical diffusivity coefficients.
476    o ice dynamics (pkg/seaice) with thsice thermodynamics:
477      - add code within pkg thsice to advect & diffuse sea-ice fields
478      similar to (and will replace) what has been added in  seaice_advdiff.F,
479      but: - conserving Mass, Heat & Salt.
480           - better when using non-linear advection scheme (not yet fully tested)
481           - can also be used in atmospheric set-up (for now, only the diffusion).
482    
483    checkpoint58x_post
484    o IO option for global-file compact format:
485      - add options when generating topology (utils/exch2/matlab-topology-generator)
486      - add I/O capability (pkg/mdsio).
487      - adapt utils/matlab/rdmds.m to read this format.
488      for now long-line format not yet supported by pkg/mdsio (& exch2).
489    o shelfice: add a few diagnostics
490    
491    checkpoint58w_post
492    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
493      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
494      (and replace horiVertRatio in NH code).
495      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
496                         and tutorial_plume_on_slope (sensitive to truncation)
497    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
498      directly to drive seaice model (C-grid only)
499    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
500     - reintroduce computation of wind from stress,
501     - compute tau (in exf_bulkformulae.F) from windstress averaged to
502       mass points to avoid tau = 0
503     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
504    o rdmnc.m: make it work with "global" files created with gluemnc
505    o rdmnc.m : some improvements in dealing with singleton dimension
506      (tested on all testreport mnc output files).
507    o genmake2: disable pkg/profiles if netcdf test fails.
508    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
509    o move call to cal_readparms up to make calendar parameters/variable available
510      to all packages
511    
512    checkpoint58v_post
513    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
514      useDynP_inEos_Zc tested.
515    o pkg/exf: changes to properly interpolate/mask/scale initial fields
516    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
517      and portions thereof.  See read_cs.txt for description and examples.
518    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
519      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
520      following the great-circle arc between those 2 points.
521    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
522      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
523    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
524     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
525     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
526     - still needs work (not working with some options ; efficiency to improve)
527       and serious testing.
528     - use this scheme for temperature & salinity in 2 advection test exp.:
529       advect_xy & advect_xz, respectively.
530    
531    checkpoint58u_post
532    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
533    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
534    o testreport: add option "-skipdir" to skip some test.
535    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
536      momentum calculation.
537    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
538    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
539      remove checkpoint.F and the_correction_step.F (no longer used);
540      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
541    o add option (linFSConserveTr) to correct for tracer source/sink due to
542      Linear Free surface
543    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
544    o pkg/thsice: fix reading mnc-pickups
545    
546    checkpoint58t_post
547    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
548    o pkg/mdsio:
549     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
550       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
551       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
552     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
553     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
554       either MDS_READ_FIELD or MDS_WRITE_FIELD )
555     - new S/R (to replace MDSWRITEMETA), which allows to write more
556       informations (variable names, time ...) to meta files.
557     - modify rdmds.m to give back the meta file content.
558    o pkg/diagnostics: change vertical interpolation to be safer, and more
559       flexible (define p-levels to interpolate to in data.diagnostics);
560      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
561       diagnostic pointer.
562    o pkg/seaice: more cleaning up of seaice_growth, added many comments
563    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
564    o fix multi-category seaice:
565     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
566       SEAICE_MULTICATEGORY
567     - fix short wave heat flux
568    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
569       and allow to use EVP solver. Change forward lab_sea: test both EVP
570       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
571    o Initial check-in of lab_sea adjoint
572      (very similar to natl_box_adjoint/code_seaice)
573      * used C-grid and EVP solver
574      * used KPP, GM/Redi
575      * uses inAdExact=.TRUE.
576      * gradient checks fail for both ADM and TLM
577        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
578        f.d. gradients actually seem more problematic than ADM, TLM gradients;
579        issue is related to forward mismatch between g77 an ifort
580    o pkg/seaice: overhaul of thermodynamics
581     - growth.F and groatb.F are replaced by new routine seaice_growth.F
582     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
583     - move a few global fields out of SEAICE.h into seaice_growth.F and
584       make them 2D (FICE/QNETO/ ...)
585     - remove FO (it is the same as QNETO)
586     - introduce a few local fields to avoid modifying external fields such
587       as atemp, etc.
588    
589    checkpoint58s_post
590    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
591      changed exf_set_gen.F so that
592        genperiod=0 means input file is one time-constant field and
593        genperiod=-12 means input file contains 12 monthly means
594    o CG2D: use pre-computed solver main-diagonal (stored in common block);
595      this affects truncation error ; generate new output file for exp. which
596      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
597        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
598        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
599        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
600        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
601        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
602    o start implementation of deep-atmosphere and anelastic formulation
603    o verification: remove 2nd copy of input files and use script "prepare_run"
604      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
605    o mom_common/vecinv/fluxform: fix a few initialisation isssues
606    o profiles: fix for multithreaded case
607    
608    o diagnostics: rename few diags:
609      s/'PRESSURE'/'RCENTER '/g
610      s/'TICE    '/'oceFreez'/g
611      s/'TAUX    '/'oceTAUX '/g
612      s/'TAUY    '/'oceTAUY '/g
613      s/'SWFLUX  '/'oceQsw  '/g
614      s/DIFx/DFxE/g
615      s/DIFy/DFyE/g
616      and add few ocean-forcing diagnostics:
617      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
618    o modifications to pkg/seaice/growth.F and budget.F, which change results of
619      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
620      as actual snow thickness.  It now refers everywhere to effective snow
621      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
622    
623    checkpoint58r_post
624    o modifications to pkg/seaice/growth.F, which change results of
625      lab_sea experiment: fixes pertain to melting snow over open water, to
626      masking EVAP under sea ice, and to using the correct AREA variable for
627      computations of EVAP, PRECIP, HSNOW, and GHEFF
628    o add ability to read bathy, salt, and theta using MNC (off by def)
629    o add flooding algorithm and advection of HSNOW for pkg/seaice;
630      both are turned off by default and do no change any results
631    o seaice advection with pkg/thsice: a step toward the use of non-linear
632      advection scheme, but #ifdef or commented out for now (requires more EXCH).
633    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
634      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
635      in natl_box (affects results @ truncation level: update output.txt)
636    o multi-threading and IO:
637      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
638      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
639        (needed to work with SingleCpuIO): tested in all verif. exp.
640    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
641      affects the results (but none of the verification test uses this scheme).
642    o Adding some pkg/diagnostics capability to pkg/seaice
643      (will certainly be subject to changes)
644    o ctrl: adding new control variables:
645      lwflux, lwdown, evap, snowprecip, apressure, runoff
646    
647    checkpoint58q_post
648    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
649      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
650      high_res_cube configuration by 4% on Columbia.
651    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
652      add (in global_with_exf/code) a version of EXF_INTERP_READ without
653      dynamical allocation (seems to work in multi-threaded).
654    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
655      single CPU io) so that TAF does not have to see EESUPPORT.h
656    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
657    
658    checkpoint58p_post
659    o obcs: stop if obcs is used with useCDscheme = .true.
660    o shelfice:
661     - fix a sign error so that no slip at shelfice interface works
662     - remove stop for combination non-hydrostatic code and shelfice. That does
663       not mean, that the results are correct, but at least they are numerically
664       stable
665    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
666    o added adjoint exch routined for all exch*3d* routines
667      and updated flow directives
668    
669    checkpoint58o_post
670    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
671      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
672    o change controling S/R for writing pickup file (new S/R do_write_pickup)
673      and clean-up reading/writing of pickup files.
674    o fix local version of read/write pickup (NH part) in rotating_tank/code
675    o simplify EXCH interface:
676     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
677     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
678    o added the regrid package
679    o shelfice:
680     - add a simple boundary layer scheme to reduce noise
681     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
682    
683    checkpoint58n_post
684    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
685       local variable (not in common block).
686    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
687      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
688      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
689        to work with SingleCpuIO.
690    o add "_d 0" to real constant of pkg/cfc subroutines ;
691       update exp. cfc_exemple & tutorial_cfc_offline output files.
692    o multi-threading and IO:
693      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
694        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
695      - barrier before and after reading.
696      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
697      - avoid using MDS_WRITELOCAL for LAND pkg output.
698      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
699        common-block variables ; Allows multi-threading with master-thread IO.
700    o change default MAX_NO_THREADS from 32 to 4 ;
701      and stop cleanly when MAX_NO_THREADS is too small.
702    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
703    
704    checkpoint58m_post
705    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
706       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
707    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
708       keep global_ocean.90x40x15 (for AD testing) with former secondary test
709       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
710    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
711        add MITgcm_tutorials (= code + all the tutorials)
712    o ecco, option to compute cost for total ssh (mean+anom)
713    o consistent with addition of ptracer and ssh in pkg/profiles
714    o profiles: adding ptracer and ssh
715    o testreport: change multi-test output-file name
716      (from output.txt.{name} to output.{name}.txt)
717    o profiles: now ok for mutli-tiles case
718    o seaice: add 4 parameters for different advection schemes for area,
719      (effective) seaice thickness, enthalphy, and snow height. Their default
720      is the standard parameter SEAICEadvScheme
721    o calc_gw:
722     - add cosFacU in zonal viscous flux (harmonic.visc.).
723     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
724       of tutorial_plume_on_slope.
725    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
726    o calc_gw: true flux-form, account for horizontal grid spacing.
727      update rotating_tank results, but not plume_on_slope (affected at
728      truncation level, 11 digits).
729    
730    checkpoint58l_post
731    o calc_gw:
732     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
733     - remove side-drag for now (need to fix it); update plume_on_slope results.
734     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
735    o commit code to make SST/SSS weights spatially variable
736      (based on either variable in-situ or variable initial T/S weights)
737    o pkg/ecco:
738      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
739        now based on horizontally varying weights wthetaLev, wsaltLev
740      * cost_averagesflags now returns year indices in addition to day, month
741      * sflux balance is performed on annual basis
742        (sflxumm, sfluxmm2, bal_sfluxmm)
743      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
744        including separate counting and multipliers
745    o pkg/rbcs
746      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
747    
748    checkpoint58k_post
749    o testreport:
750     - always build in dir. "build" (if not there, mkdir build instead of building
751       & running in input)
752     - run in dir run (if it exists), in build otherwise.
753     - call prepare_run (if input/prepare_run exists)
754     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
755    o pkg/exf modifications to interpolation and rotation routines for more
756       reasonable treatment of North Pole singularity: for tracers North Pole
757       value is set to northernmost zonal-mean value, for zonal velocity it is
758       set to zero, and for meridional velocity it is set to northernmost value.
759    o pkg/exf/exf_check_range.F
760     - add tile index to diagnostics and move stop statement to the very
761       end of the routine.
762    o pkg/diagnostics: (diagnostics_main_init.F)
763      define title of isomorphic variables according to the current config.
764    o pkg/thsice with pkg/seaice dynamics:
765    - fix domain of computation (interior only, required for exf) and do exchanges
766    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
767    o towards a standard way of dealing with multi-threading in MONITOR
768      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
769    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
770       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
771    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
772    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
773    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
774       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
775    o tracer advection:
776     - clean-up and simplify calc_common_factors.F
777     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
778       advection subroutine (but still not used within DST advection S/R)
779    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
780    
781    checkpoint58j_post
782    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
783      from file (collects calls previously in FORWARD_STEP)
784    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
785    o adjoint store dir. adjusted accordingly
786    o genmake2
787      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
788    
789    checkpoint58i_post
790    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
791      on wind stress (SEAICEstressFactor defaults to 1.)
792    o Total number of Timers is finite (<=40): comment out 2 non-essential one
793      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
794    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
795      on CS-grid: no longer loosing mass.
796    o exf & curvilinear-grid: no longer modify longitude xC & xG.
797    o pkg/ggl90: fix sloppy output and fix a bug
798    o pkg/seaice: added SEAICEuseEVPpickup parameter
799      - Set to false in order to start EVP solver with
800        non-EVP pickup files when using SEAICEuseEVP
801      - fix sign error in diffusion in seaice_calc_rhs
802    
803    checkpoint58h_post
804    * Modifications for bottom topography control
805      o replace hFacC by _hFacC at various places
806      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
807      o add non-self-adjoint cg2d_nsa
808      o update autodiff support routines
809      o re-initialise hfac after ctrl_depth_ini
810      o works for 5x5 box, doesnt work for global_ocean.90x40x15
811    * Adding verification for 5x5 box (4-layer) bottom topography control
812    
813    checkpoint58g_post
814    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
815       used for mean seasonal cycle, mean diurnal cycle); add an example
816       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
817    o pkg/ggl90:
818      - add parameter (minimum surface kinetic energy)
819      - fix bug (avoiding division by zero)
820    o couple pkg/thsice to pkg/seaice:
821      - modify advection in seaice to accomodate new scalar fields to be advected
822      - only muliDimAdection scheme work with seaice/thsice
823      - mapping of thsice-variables to seaice-variables, back and forth
824      - does not break the verification experiments, but does not give the
825        desired results either
826    o pkg/seaice
827      - make (default) second order advection a bit less confusing?
828    
829    checkpoint58f_post
830    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
831      to pkg/seaice):
832      - new routines thsice_map_exf and thsice_get_exf provide the interface
833      - add an additional formal parameter to thsice_solve4temp
834    o pkg/exf:
835      - add new fields wspeed, snowprecip (to be able to couple to thsice)
836      - correct Stefan-Boltzmann constant
837      - new parameter for longwave surface emittance
838      - separate some stuff from exf_bulkformulae into new routines  
839        exf_radiation, exf_wind
840      - add new parameters and constants: longwave emissivity for ocean, ice
841        and snow, evaporation parameters over ice
842      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
843        either wind from stress or stress from wind
844    o pkg/thSIce:
845    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
846    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
847       and THSICE_CALC_THICKN
848    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
849    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
850      to make debugging easier.
851    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
852    o pkg/bulk_force:
853      - clean-up comments and parameters ;
854      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
855    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
856      generate new output for test-experiment: aim.5l_cs.thSI
857    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
858      testreport accordingly
859    
860    checkpoint58e_post
861    o SEAICE_CGRID adjoint done
862    o R_STAR adjoint implemented.
863      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
864      * need to sort out init. of h0facc, etc.
865    o Make pkg/profile fully independent of ecco,cost, etc. stuff
866      to be able to use it in pure forward.
867    
868    checkpoint58d_post
869    o upgrade simple test-experiment to tutorial example:
870     step.1: duplicate the experiment and (step.2) will remove the old copy.
871      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
872      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
873      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
874      tutorial_global_oce_biogeo    <- copy of dic_example
875      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
876      tutorial_plume_on_slope       <- copy of plume_on_slope
877      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
878      tutorial_global_oce_optim     <- empty for now (David ?)
879      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
880     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
881    o correct a sign problem in cost_scat.F
882    o obcs and ptracers: fix boundary conditions for advections schemes
883      with larger stencil
884    o thsice adjoint: start
885    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
886      completeness
887    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
888      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
889    o ptracers adjoint:
890      * avoid extensive recomputatations
891      * fix missing re-init. of gptr (missed by TAF)
892    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
893      me to turn off the excessive output to STDOUT that this package produces
894    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
895      and add those terms in Vector-Invariant formulation.
896    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
897      if the control period (xx_hfluxperiod etc) is 0
898    o in profiles pkg, clean routines and fix details
899    o in ecco pkg, reading ssh data:
900      fix problem in case the model does not start at iter0=0
901    o fix mnc-pickup/restart for ptracers
902    o new package prifiles:
903      code to compute profile-based cost by Gael Forget
904      (modifs in ecco, ctrl, autodiff)
905    o Benign bug fix in initialization (spotted by M. Mazloff) of
906      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
907    
908    checkpoint58c_post
909    o adjoint: finish NLFS adjoint and provide reference output in
910      verification/global_ocean.90x40x15/results_ad_nlfs
911    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
912      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
913      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
914      with SEAICE_CGRID defined.
915    o move calendarDumps from "data" to "data.cal" and clean-up the code
916      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
917    o add useEXF & useCAL flags (for now, set in hard-coded way)
918    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
919      (were missing in NH mode, and wrong in quasihydrostatic mode).
920      waiting for Chris updated version of calc_gw to add those CALLs.
921    o fix bug in quasihydrostatic S/R ;
922      add a test for this option: global_ocean.90x40x15.qshyd
923    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
924      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
925    o add on/off flag useOffLine for package OFFLINE
926    o seaice:
927      - modify advection so that it works also on the C-grid
928      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
929        problem in multi-tile runs with C-grid
930      - add flags for clipping ice velocities and/or masking solver forcing
931      - fix drag (ocean on ice) formulation and a bug that caused noise in the
932        C-grid solver
933      - added a few comments to seaice_diffusion.F
934      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
935        are now exclusive)
936      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
937        required re-ordering the code a little:
938       + make DAIRN global variable (defined in SEAICE)
939       + move computation of the viscosities eta and zeta into a new separate
940         routine (because I need to recompute them in seaice_ocean_stress.F)
941    
942    checkpoint58b_post
943    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
944      update output.txt of exp. aim.5l_cs.thSI
945    o various mnc cleanups and improvements:
946      + shrink lookup tables by factor of ~4
947      + better error reporting when running out of lookup space
948      + able to handle longer path/file names (up to 500 chars)
949    o adjoint:
950      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
951      - TBD: "hidden" mom_vecinv recomp. in dynamics
952    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
953     (allow to differentiate between forcing components using new integer flags:
954      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
955     and add new flag to put Dissipation tendency out of Adams-Bashforth.
956    o ecco
957      - enable trend removal from SSH anomaly obs.
958    o adjoint
959      - a fix for PmEpR when #undef EXACT_CONSERV
960      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
961      - try to fix "hidden" recomp. in forward_step for NLFS
962        (NLFS seems broken sometimes after I checked it in)
963    o seaice:
964     - add c-grid version of the dynamic solver:
965       + three new routines that are the c-grid substitute lsr, dynsolver
966         and ostres
967       + put a few fields that were local to dynsolver into global common
968         blocks, so that I can move the computation of stresses etc into
969         seaice_lsr (saves coding but may break the adjoint).
970     - replace more hardwired parameters by runtime parameters
971     - add ice masks that mask the rhs of the implicit solvers where there
972       is no ice (commented out in seaice_dynsolver, because i am not sure
973       if this works properly), eventually this should replace the clipping
974       of ice velocities in seaice_dynsolver to +/-40cm/s.
975    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
976      include it only where its needed
977    o move balancing of fluxes before the call of external_forcing_surf
978    o seaice:
979      - correct units of turning angles (now they are really in degrees)
980      - move computation of GWATX/Y out of main routine into dynsolver
981      - initialize GWATX/Y in seaice_init
982    o Apply mask on Fresh-Water flux (needed for SSH forcing).
983      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
984    o seaice: add runtime flags for turning angles (default to zero)
985    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
986      and trend from exf forcing and ctrl control adjustments
987    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
988      (since checkpoint57x_post)
989    o change the default rotation period to 86164.s = the Earth rotation
990    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
991      and based on a reference stratification. Tested within hs94.cs-32x32x5.
992    o seaice advection: add code for choosing between the default (2nd order
993      central differences) and multiDim advection schemes provided by
994      pkg/generic_advdiff
995    o seaice:
996      - removed all references to SEAICE_GRID.h fields from
997        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
998        (cubed-sphere configuration will change a little)
999      - grid computations in seaice_init are obsolete now.
1000      - cleaned up code a little so that is easier to read (hopefully).
1001      - added new (better?) discretizations of default advection and diffusion
1002        (turn on with SEAICEuseFluxForm)
1003      - replace 1 in 3d global fields by kSurface in growth.F
1004      
1005    checkpoint58a_post
1006    o seaice:
1007      - bug fix in advect.F
1008    o shelfice:
1009      - separate shelfice load anomaly from pload (breaks with time
1010        dependent forcing), => introduce constant field shelficeLoadAnomaly.
1011        Its default is 0., but it may be computed more cleverly from (unknown)
1012        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
1013        done offline. A good approximation of the pressure load anomaly is
1014        necessary to avoid large initial adjustment processes underneath
1015        deep-reaching shelfice.
1016      - small fix in ISOMIP shelfice_thermodynamics
1017      - add more sophisticated thermodynamics of Hellmer (1989), this is
1018        now the default
1019      - give a few constants more intuitive names
1020    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
1021      if bulk formulae are used in long integration (especially EmPmR). Turn
1022      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
1023      if balancePrintMean, the imbalance that is substracted is printed to
1024      STDOUT.
1025    o fix bug (typo) in obcs_apply_eta.F
1026    o add a new package shelfice which enables us to model the circulation
1027      underneath shelf-ice with draughts of hundreds of meters.
1028     - works
1029     - to do: + include improved thermodynamics
1030              + check whether kSurfC (from model/inc/SURFACE.h) can be used
1031                instead of new field kTopC
1032              + can we use topoFile, Ro_surf and existing code in ini_depth.F
1033                instead of new field R_shelfIce and new code in ini_depth.F
1034                and ini_mask_etc.F?
1035              + adjust vertical mixing schemes?
1036    o seaice pkg:
1037     - add a cpp-flag to include a simple formula for a salinity dependent
1038       freezing point of sea water at the surface
1039     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
1040       meridional stresses are now different (and hopefully correct)
1041    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
1042       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
1043       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
1044    o pkg/diagnostics: add options and parameters for regional-statistics
1045       diagnostics ; define regions by reading a region-mask from a file
1046       (might add other options later)
1047    o pkg/bulk_force:
1048     - add option and parameters to use AIM surface-flux formulae.
1049     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
1050       others forcing fields (defined in PARM05, parameter file "data") are loaded
1051       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
1052     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
1053     - use the right EXCH call for uwind,vwind (to work on CS-grid).
1054     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
1055       and parameters (note: calcWindStress replaces .NOT.readwindstress).
1056     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
1057    
1058    checkpoint58
1059    o add "--embed-source" option to genmake2 which, when the supporting
1060      tools can be compiled (as determined by genmake2) will turn on the
1061      embed_files package which then embeds the entire MITgcm source code
1062      (*.[fFhc] + Makefile) used for the build within the executable
1063      - requested by CNH but off by default
1064      - adds a paltry <9MB to the mitgcmuv executable in most cases
1065      - only writes the output when useEMBEDSRC in eedata is true
1066    o clean up 3-dim. relaxation codes:
1067      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
1068      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
1069      * Thanks to Tom Haine for testing!
1070    
1071    checkpoint57z_post
1072    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
1073      affects output (@ truncation level) of exp. plume_on_slope ; updated.
1074    o fix the pickup behavior for obcs in combination with ptracers
1075    o fix a bug in ptracers_external_fields_load
1076    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
1077      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
1078    o transfered surface NH pressure to eta field (if exactConserv).
1079    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
1080         and update lab_sea output.txt file.
1081    o completing 3-dim. relaxation code: additional term
1082         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
1083      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
1084      * At compile time, in "EXF_OPTIONS.h" set
1085          #define  ALLOW_CLIMTEMP_RELAXATION
1086          #define  ALLOW_CLIMSALT_RELAXATION
1087      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
1088          tauThetaClimRelax3Dim = 15552000.0,
1089          tauSaltClimRelax3Dim  = 15552000.0,
1090      * 3 cases:
1091          1) Use a constant-in-time 3-dim. field
1092          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
1093          3) Real-time relax. to time-evolving prescribed field
1094    o Adding Laplacian-type smoothness constraint on
1095      initial and boundary (forcing) controls (ic, bc)
1096      * enable at compile-time via
1097        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
1098      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
1099      * Absolute scale somewhat unclear so far
1100      * no area weighting was included since no other cost term does so far
1101    
1102    checkpoint57y_post
1103    First step for a NLFS adjoint
1104    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
1105    o new init. routines for calc_r_star, calc_surf_dr
1106    o still need to deal with ini_masks_etc
1107    o testreport seemed happy
1108    checkpoint57y_pre
1109    
1110    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
1111    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
1112    o add new offset feature to offline pkg (plus minor cleanup)
1113    o cfc fixes for final year of integration
1114    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
1115      be in GCHEM_OPTIONS).
1116    
1117    checkpoint57x_post
1118    o fix testreport Pb in multiple test experiment.
1119    o cleanup our namelist syntax in verification:
1120      - make it more F95 standards compliant (some work still needed)
1121      - allows the vast majority of our tests to work with gfortran
1122    o Non-Hydrostatic:
1123     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
1124     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
1125    o Allow to apply AB on T,S rather than on AB(gT,gS):
1126     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
1127     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
1128       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
1129     - need a "clever" read_pickup to restart from the other AB formulation
1130    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
1131    o remove some unused variables (reduces number of compiler warnings)
1132    o adjoint
1133      * Disable useVariableViscosity for adjoint for time being
1134        (there are a number of extensive recomputations)
1135      * Initialize certain variables needed for adjoint
1136    
1137    checkpoint57w_post
1138    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
1139                 fix the singleCpuIO RS version of MDSWRITEFIELD
1140       and add a WARNING if using globalFiles=T with multi-processors.
1141    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
1142      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
1143    o tracer advection scheme:
1144      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
1145       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
1146       was not very convenient).
1147      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
1148       (further tests needed for the implicit DST & Flux-Limiter schemes).
1149    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
1150      and sRef for convenience, handy, when you want to initialize
1151      ptracers in a large domain with a constant non-zero value. Also,
1152      untangle ptracers_init.F a little.
1153    
1154    checkpoint57v_post
1155    o change dome exp. to use variable viscosity in side-drag terms.
1156    o remove all the files from the cfc_offline test since they are now
1157      incorporated into tutorial_cfc_offline which has been producing
1158      identical results for a few days of testing
1159    o add new parameter: sideDragFactor to enable half-slip-side BC
1160      and change side-drag S/R to use viscosity from mom_calc_visc
1161      (can switch back by setting sideDragFactor=0.); affects results at
1162      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
1163       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
1164    o vorticity & strain are now computed without masking, to account for
1165      no-slip-side BC in variable viscosity calculation ; mask is applied
1166      anyway later on, before computing advection/coriolis terms.
1167    o modify exp4 to test new obcs support for reading from external files
1168      and for passive tracers
1169    o fix behavior of ptracers_monitor when monitor output is written to a
1170      netcdf-file; still not independent of monitor.F (writes in the same
1171      file).
1172    o change default value of tRef (put a uniform, meaningful value for ocean
1173      & atmos) and initialize sRef (was missing, as Martin mentioned).
1174    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
1175      to be proportional to enstrophy dissipation length.  Thus,
1176       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
1177      This is now consistent with Smagorinsky and with the manual.
1178    
1179    checkpoint57u_post
1180    o OBCS and PTRACERS: add open boundary support for passive tracers
1181      - either use homogenous (pseudo) v.Neumann conditions or prescribe
1182        OB-values from file; this is not different from the way theta and salinity
1183        are treated
1184      - however, Orlanski-radiation conditions are not supported, and the model
1185        will stop if you use pTracers and Orlanski at the same time.
1186      - beefed up the rountine obcs_external_fields_load: now only those open
1187        boundary values are overwritten with values from files for which there
1188        are really files, otherwise the OB-fields remain untouched. This makes
1189        it possible to use different OBs at different ends of the domain (as
1190        with EXF)
1191    o reduce number of exch calls in shap_filt (s2).
1192    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
1193      truncation level) 4/5 MLAdjust test results (11&12 digits match).
1194    
1195    checkpoint57t_post
1196    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
1197    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
1198      same truncation, independent of the face number: affects affects several
1199      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
1200    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
1201      note that biharmonic viscosity + no-slip was not tested in any experiment.
1202    o fix bug in non-linear free-surf side-drag ; generate new output for
1203      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
1204    o make mnc honor the writeBinaryPrec flag for most kinds of output
1205    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
1206    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
1207      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
1208    o add brackets in multi-terms sum to get same truncation, independent of
1209      the face number (manage to get exactly same value of gU,gV at the cs-edge)
1210      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
1211    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
1212      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
1213      a maximum grid-scale Reynolds number.  Also, changes all length calculations
1214      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
1215      Suggested values of viscosity parameters found in mom_calc_visc.
1216      Many new viscosity diagnostics available.
1217    
1218    checkpoint57s_post
1219    o Add clearing-house for viscosity calculations, mom_calc_visc and
1220      correct numerous bugs in LeithD and Smagorinsky discretizations.  
1221      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
1222      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
1223      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
1224      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
1225      The Strain-Tension form is now called with useStrainTensonVisc=.true.
1226      ViscAhStrain and viscAhTension are now retired.
1227    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
1228    o In response to JMC's bug report, genmake2 now ignores any soft-links
1229      that it finds in the *current* directory when searching for files.
1230      Soft-links found in any other source directories will still work as
1231      they did before.
1232    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
1233      a C routine to unlimit the stack size
1234    o mnc-ify pkg/aim snapshot vars
1235    o mnc-ify pkg/land as requested by Daniel
1236    o various changes to mnc including:
1237      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
1238      - output can now be grouped so that all files within a group
1239          change the ITER portion of their names in lock-step together
1240      - can now read ("global") PER-FACE (in addition to PER-TILE) files
1241          and works with both EXCH1 and EXCH2 (but needs more testing)
1242      - writing works for all verification test cases w/ g77 on Linux
1243    
1244    checkpoint57r_post
1245    o make MNC variable initialization happen earlier
1246    o add diagnostics for (almost) each term of the momentum Eq.
1247    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
1248    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
1249    o remove MINIMAL_TAVE_OUTPUT option ;
1250      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
1251    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
1252      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
1253    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
1254    o add time-dependent SST, SSS control
1255    o cost terms in ecco/ modularized (new cost_generic.F)
1256    o cost_averages routines are modularized (new cost_averagesgeneric.F)
1257    o new infrastructure for seaice model vs. obs misfits in seaice/
1258      * driver from the_main_loop.F is seaice_cost_driver.F
1259      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
1260      * gradient check in Exp. 6a of natl_box_adjoint/
1261    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
1262      (see README file)
1263    
1264    checkpoint57q_post
1265    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
1266    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
1267      - bug was reported by Jean-Michel and Ian Fenty
1268    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
1269      update exp. cpl_aim+ocn output.
1270    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
1271      Needed for high-res. runs with large global files
1272      to be able to limit tapelev size
1273    o Changed some tests for adjoint:
1274      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
1275      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
1276      * global_ocean.90x40x15/ back to default 3-level checkpointing
1277    o Modifications to enable scripted COMMON to MODULE conversion
1278      * verification/OpenAD/code/ has necessary scripts and description;
1279      * converts, compiles and runs successfully;
1280    
1281    checkpoint57p_post
1282    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
1283    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
1284      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
1285    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
1286    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
1287      (was already the case for dissipation with mom_vecinv,
1288       and also the case for grad.PhiHyd when staggered-timeStep)
1289      This will allow to put dissipation out-off the AB time-stepping.
1290     Unfortunately, affects truncation error. Update output of exp. that "fails"
1291      (cg2d matching number) and leave the others for later: front_relax(10),
1292      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
1293      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
1294    
1295    checkpoint57o_post
1296    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
1297      (2) its ready to be documented during the 20050801 DocFest
1298    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
1299      for ideal_2D_oce and lab_sea on linux_ia32_g77
1300    o set to #undef CTRL_SET_OLD_MAXCVARS_30
1301      in global1x1_tot/code_seaice_adj to access indices 32, 33
1302      (worth another tag)
1303    
1304    checkpoint57n_post
1305    o adding precip control xx_precip 32
1306    o adding swflux control xx_swflux 33
1307    o Replacing 10 forcing penalty cost routines by 1 generic.
1308    o Implementing partitioning in time-mean and variable adjustment
1309      for atmos. state.
1310    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
1311    o in natl_box_adjoint:
1312      * updated exp 1 to 10
1313        (but does not have time-mean vs. variable split results yet)
1314    o updated global1x1/*_seaice_adj/
1315      to incorporate latest changes
1316    o enable useSingleCpuIO for mdsio vector routines
1317      (applies in particular to tapelev I/O)
1318    o removed inefficient K-loop in all active_file*control*.F
1319    
1320    checkpoint57m_post
1321    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
1322      and advect_cs (use EXCH-2 and standard cs-32 grid files).
1323    o pkg/exch2: filling of face-corner halo regions is optional
1324      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
1325    
1326    checkpoint57l_post
1327     tag before updating tutorials (pre-release-2)
1328    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
1329       for output and interpolation of input fields onto model grid)
1330    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
1331       Affects results of exp. rotating_tank ; update output.txt.
1332    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
1333          and taking the square quantity and/or using a fraction-weight field.
1334    o fix aim_diagnostics_init.F mate numbers.
1335    o add mnc output capability to diagnostics/diagstat and update
1336      our cvsignore files for the ACSII output generated
1337    
1338    checkpoint57k_post
1339    o lab_sea now uses diagnostics package and provides a suite of
1340      new EXF diagnostics output.
1341    
1342    checkpoint57j_post
1343    o exf
1344      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
1345        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
1346        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
1347      * extended diagnostics output
1348        - now includes all EXF variables
1349        - hs, hl moved to common block
1350        - separate S/R for diagnostics, called after ctrl vector is added
1351        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
1352        - EXFqnet contains true Qnet (i.e. includes qsw)
1353      * updated verif. lab_sea, global_with_exf
1354      * Rearranging hflux (exf_mapfields -> exf_getforcing)
1355        to ensure that diagnostics sees a true EXFqnet
1356    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
1357    o diagnostics pkg: change pointers so that 1 diagnostic can be used
1358      several times with different frequencies.
1359    o mnc-ify the thsice package as requested by Daniel Enderton
1360      - the monitor--MNC output needs work
1361      - many attributes need to be added (most are currently blank)
1362    o mnc-ify theaim_v23 package as requested by Daniel Enderton
1363      - many attributes need to be added (most are currently blank)
1364    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
1365    o add Sadourny like discretization to the 4th.O vorticity advection scheme
1366    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
1367      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
1368         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
1369    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
1370     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
1371    
1372    checkpoint57i_post
1373    o Diagnostics package was changed: diagnostic allocation is now deactivated
1374      by setting an empty file name in the namelist (used to be by setting 0 frequency)
1375    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
1376      add 1rst Order upwind vertical Shear.
1377    o add a quick fix for A/B checkpointing in OFFLINE mode
1378    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
1379      end-run around the C/Fortran linking horror in eesup/src/timers.F
1380    o added pkg/runclock: allows user to terminate run based on wall clock
1381    o added non-hydrostatic scaling parameter: nh_am2
1382    o pkg/my82: futile attempt to make results compiler-independent by adding
1383      some "_d 0", etc. no effect.
1384    o for mnc output, fill the 'T' coordinate var with myTime and create a
1385      separate 'iter' variable for iteration count
1386    o pkg/diagnostics:
1387      add new capability: output of Global/Regional & per-level statistics ;
1388      tested against monitor output (including land & thSIce) on various exp.
1389    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
1390    
1391    checkpoint57h_done
1392      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
1393      data.diagnostics, data.gchem, data.ptracers) is done.
1394    
1395    o pkg/diagnostics: prepare for Global/Regional statistics.
1396      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
1397    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
1398      and rename it: DIFFERENT_MULTIPLE
1399    
1400    checkpoint57h_post
1401    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
1402    o pkg/diagnostics: change output frequency, now in seconds (instead
1403      of Nb of iterations). This requires to change data.diagnostics.
1404    checkpoint57h_pre
1405    
1406    o in mnc, let the user create the output dir if both mnc_outdir_date
1407      and mnc_outdir_num are false
1408    o add fflags() to pkg/diagnostics which allows one to specify, on a
1409      per-file basis, the file precision [default behavior is unchanged]
1410    o added diagnostics to pkg/kpp, including computation of mixed layer
1411      depth based on a temperature/density criterion
1412    o updated verification/natl_box to test the new pkg/kpp diagnostics
1413    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
1414    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
1415    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
1416      not mnc -- this mistake was found by JMC and is now corrected
1417    
1418    checkpoint57g_post
1419    o add Adams-Bashforth 3rd Order time stepping:
1420      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
1421      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
1422    checkpoint57g_pre
1423    
1424    o make lambda[Theta,Salt]ClimRelax spatially varying
1425      (default remains spatially uniform constant based on tau)
1426    o added new control variables
1427      * init. uVel, vVel, etanN
1428      * lambda[Theta,Salt]ClimRelax
1429    o separate masks used for ctrl_pack/unpack 'from write_grid' output
1430      (suggested by G. Forget)
1431    
1432    checkpoint57f_post
1433    o add parameter "baseTime" = model base time = time at iteration zero
1434      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
1435      account for baseTime shift
1436    o move Coriolis arrays from PARAMS.h to GRID.h
1437    checkpoint57f_pre
1438    
1439    o mnc-ifying the seaice package
1440    o introduced an alternative length scale calculation for use in the limiting
1441      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
1442    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
1443    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
1444      as well as grad(vort3).  Made it compatible with both approximate form
1445      for the cubed sphere and full form of these gradients.  Added flag
1446      useFullLeith to select between approximate and full form.  
1447    o add "d0" in getcon.F to reduce differences between compilers/platforms
1448      update output.txt of exp. fizhi-gridalt-hs
1449    o change port_rand funtion to allow to set the seed.
1450    o fix obscure MNC bug involving conversion between reals and integers
1451      - it caused no problems with certain (eg. gcc, ifc) compilers but the
1452        new version is now more standards-compliant
1453    o adjoint-related modifications
1454      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
1455      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
1456      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
1457    
1458    checkpoint57e_post
1459    o Adding eddy stress controls a la Ferreira et al.
1460    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
1461    
1462    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
1463      update output.txt of exp. fizhi-gridalt-hs
1464    o add more "Z" dimensions and associated coordinate vars to MNC
1465    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
1466    o parameter calendarDumps: when set, approximate months (30-31 days) and years
1467      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
1468      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
1469      months and years.  Requires pkg/cal.
1470    o diagnostics: add pickup functionality
1471      - off by default for backwards compatibility
1472      - current version only uses MDSIO -- MNC will be added
1473    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
1474    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
1475    
1476    checkpoint57d_post
1477    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
1478    o modify verification/ideal_2D_oce so that it tests the creation of mnc
1479      output from the diagnostics package
1480    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
1481    o make genmake2 more portable by using ".$FS" instead of ".f" for more
1482      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
1483    o add coordinate variables to the MNC output from the diagnostics package
1484    o change MNC-flags default value: true when useMNC=TRUE
1485    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
1486      the ability (off by default) to read the grid information using MNC
1487    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
1488    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
1489    o do snap-shot diagnostics at the middle of the time-interval (instead of
1490      at the end).
1491    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
1492      new test for AIM with thSIce + slab-ocean
1493    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
1494    o move state variable diagnostics to the beginning of the time step ;
1495      (note: still needs some work specially for snap-shot diagnostics)
1496      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
1497    
1498    checkpoint57c_post
1499    o Change testing option (-ieee) to get closer agreement between g77 & ifort
1500    o generate new output.txt files on faulks with g77 & the new -ieee option
1501    checkpoint57c_pre
1502    
1503    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
1504      update output.txt of exp. global_ocean.90x40x15
1505    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
1506      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
1507    o add saltFlux(+File) forcing capability with periodicExternalForcing
1508    o allow to use pkg diagnostics for GM-Redi & ThSIce output
1509    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
1510    o improvements for the MNC output from DIAGNOSTICS:
1511      - correct handling of the unlimitied dimension
1512      - all dims now have associated coordinate variables
1513      - variables located at U, V, and Corner ("Z") points are now written
1514        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
1515        *all* data points are output
1516    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
1517    o added pkg/seaice/seaice_monitor.F
1518    o mdsio_readfield.F can now read files visible only to master MPI process.
1519    o pkg/seaice: some test code for ice-modified ocean stress
1520    o exf_getffields interpolation defaults to bilinear for all scalar forcing
1521      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
1522      spurious negative numbers for precipitation and humidity.  Will cause
1523      some small numerical differences for integrations using pkg/exf/exf_interp.F.
1524    o pkg/ctrl/
1525      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
1526        May be enabled via doPackDiag
1527      *  introduce z-scaling of
1528         + gradient (doZscalePack) and
1529         + control (doZscaleUnpack)
1530    o pkg/mdsio/
1531      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
1532      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
1533    
1534    checkpoint57b_post
1535    o simplify options in diagnostics_fill arguments (remove weird combinations)
1536    o fix MNC coordinate variables so that they now contain per-face index
1537      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
1538      general, EXCH2 grids are only aligned to a "local" coordinate system
1539    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
1540    o Implement instantaneous output within pkg diagnostics:
1541      setting a negative frequency in data.diagnostics produces
1542     "snap-shot" output (as opposed to time-average if freq > 0)
1543    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
1544      NOTE: change ptracer diagnostics name: use 2 characters to work with
1545            more than 9 tracers. Add also diagnostics of advect & diffus flux.
1546    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
1547      becomes the coordinate variable for the 'T' dimension
1548    o add CF-style coordinate variables to MNC
1549      - just a first cut:  numbers are meaningless on the cubesphere and
1550        missing along the T axis but otherwise it works!
1551    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
1552    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
1553    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
1554      this is based directly on what the model compute, so that the content of
1555      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
1556    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
1557    o clean up build options files for SunOS, in particular
1558      - remove -traditional from xmakedepend
1559      - change -xarch=v9 to -xarch=native for f77
1560      - restore use of make (not gmake)
1561      - add CC=gcc if using g77
1562    o changes per discussion of AM, JMC, & EH3 today:
1563      - move redundant "grid" variables out of "state" -- in preparation of
1564        creating proper CF-style coordinate variables and in recognition
1565        that any/all grid variables can be easily copied (eg. w/NCO) from
1566        the grid files into any of the other NetCDF files
1567      - *always* output grid variables with MDSIO (this will eventually be
1568        changed)
1569      - output MNC grid file if useMNC is true
1570    o every instance of _END_MASTER() has been found and replaced with
1571      _END_MASTER( myThid ) in order to satisfy certain picky Sun
1572      preprocessors
1573    o re-arrange diagnostics pkg initialisation:
1574     - allow each package to extend the available diagnostics list
1575     - add some checking and fix small problems (multi-threaded, ...)
1576     - new S/R diagnostics_fill (replace fill_diagnostics):
1577       look through the short list of active diag. (instead of the long list)
1578       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
1579    
1580    checkpoint57a_post
1581    o this set of changes restores TAMC compatibility
1582      tested for global_ocean.90x40x15 adjoint on trough
1583      (what a pain)
1584    
1585    checkpoint57a_pre
1586    o some modifs in tools/build_options for sunos
1587    o call ctrl_pack for ctrl at end for optimcycle=0
1588    
1589    checkpoint57
1590    o add horizontal bi-harmonic viscosity for vertical velocity
1591      - new parameter viscA4W (defaults to viscA4)
1592      - affects only non-hydrostatic code
1593      - to be done: no-slip lateral boundary conditions
1594    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
1595    o implement Implicit Vertical advection for pTracers
1596    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
1597      (implemented also for implicit vertical diffusion & advection)
1598    o OBCS: extend application of tracer open boundary conditions
1599      to a strip beyond the boundary of width Olx/Oly
1600    o add call monitor to TAF set of required calls (flow directives)
1601      and include in natl_box_adjoint
1602    o untangle a few ifdefs related to cost, ctrl, autodiff
1603      untangel a few ALLOW_ECCO_OPTIMIZATION
1604    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
1605      (theta2, salt2 in ecco_cost_weights)
1606    
1607    checkpoint56c_post
1608    o OBCS as control variables
1609      - update ctrl_ad_diff.list, obcs_ad_diff.list
1610      - remove balance of obcs controls from default
1611      - fix index bug nobcs in ctrl_init
1612      - fix dummy fields filen in ctrl_pack
1613      - add dummy weights for obcs
1614    o lsopt: comment out fort.94 output
1615    o optim:
1616      - remove unnecessary header files
1617      - adjusted namelists
1618      - add xerbla.F to Makefile
1619    o exf:
1620      - multiple modifications of exf_check_range
1621      - unit change in exf_init_runoff from [m/year] to [m/s]
1622    o mdsio:
1623      - i/o-vector change debugLevel from debLevA to debLevB
1624    
1625    checkpoint56b_post
1626    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
1627      is called from DO_THE_MODEL_IO
1628      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
1629      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
1630      - clean up PTRACERS_WRITE_TIMEAVE a little
1631    o add another verification experiment that tests both the cfc-pkg and
1632      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
1633      reactive tendencies treated inline with regular timestepping
1634    o testreport previously did a lousy job of comparing small numbers, so
1635      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
1636      implemented in the little c-progam tmp_cmpnum.c which is embedded in
1637      testreport.
1638    o ptracers_monitor: bug fix for MPI
1639    
1640    checkpoint56a_post
1641    o GCHEM: finish reorganizating the package
1642      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
1643        (introduces another 3D-array for each passive tracer, but only if
1644        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
1645        gchemTendency is not needed because the timestep is done separately)
1646      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
1647      - GCHEM is now---more or less cleanly---separate from PTRACERS
1648      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
1649        so clear to me how that should be done in a general way.
1650    o CFC: improve formatting of output in CFC_ATMOS
1651    o PTRACERS:
1652      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
1653        that ALL experiments with ptracers enable can be checked. This makes
1654        GCHEM_MONITOR obsolete.
1655      - include a runtime parameter PTRACERS_monitorFreq that defaults to
1656        monitorFreq
1657      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
1658    o add PTRACERS (PTR0[1-5]) to testreport output
1659    o exf_check_range:
1660      * default changed to .TRUE.
1661      * will check values for niter0 if debLevA, every timestep if debLevB
1662      * STOP in exf_check_range if 'out of range'
1663      * range chosen generous to allow for potential extema
1664      TBD: a version with stricter range
1665           permitted range would be runtime parameters
1666    o GMredi:
1667      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
1668      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
1669      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
1670    o GCHEM:
1671      - move call to GCHEM_FORCING_SEP, so that it is now called before
1672        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
1673      - introduced a useGCHEM runtime flag and applied it everywhere.
1674      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
1675        this flag is now only visible within GCHEM-pkg routines.
1676      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
1677        be replaced by a 3D array that is computed before thermodynamics; for
1678        this, the tracer ID iTracer had to be included into the parameter list
1679        of ptracers_forcing
1680      - set up forward_step to call gchem_forcing, that will replace
1681        gchem_forcing_int in ptracers_forcing
1682      - cleaning up
1683    o small cleaning of exch2: remove files that are also in eesupp/src
1684    
1685    checkpoint56
1686    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
1687    o mnc: cleanup "full" files--fixes out-of-memory problem
1688    o ECCO-GODAE
1689      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
1690      * fully merged and updated from SIO code
1691        windstress sign change affects
1692        - exf_inscal_[u/v]stress
1693        - sign of xx_tau[u/v] adjustments
1694        - signs in cost_scat
1695      * ctrl_get_gen: avoid update of tau[u/v] for first few days
1696      * natl_box_adjoint updated and compressed
1697      * 2-level checkpoint switch added
1698        (tested in EXP. 1 of natl_box_adjoint)
1699      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
1700    o SVD
1701      * first complete, non-hacked version for SVD calculations
1702      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
1703        performed via direct access files admtlm_vector.it????
1704        (via ctrl_[un]pack)
1705      * optimcycle is used for ARPACK iteration counter
1706        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
1707      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
1708        and add linear transforms where necessary
1709      * controls are initial/final SST, SSS (can be extended; need to check
1710        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
1711    o mdsio: filename info to both stderr, stdout
1712    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
1713      from sign change
1714    
1715    checkpoint55j_post
1716    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
1717      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1718    o add consistent build directories and .cvsignore files to verification
1719    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
1720    o make all subroutines 30 or less characters in length for certain older
1721      compilers to work (a thorough search only turns up two routines in
1722      pkg/ptracers)
1723    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
1724      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1725    
1726    checkpoint55i_post
1727    o change arrays for total vertical diffusivity (2.D if explicit,
1728      3.D if implicit) ; each ptracer uses its own background value.
1729    o added mnc/NetCDF output capability to ocn_compon_interf
1730      - added bits to verification/cpl_aim+ocn so that it can run on
1731        ITRDA and other clusters without the mpirun "-wd" option
1732    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
1733      configuration
1734    o give MNC the ability to create additional files rather than
1735      exceeding a specified file size limit "MNC_MAX_FILESIZE"
1736      - the default is just less than 2GB which is a practical limit
1737        on many systems
1738    o Compute the non-local term using either KPP vertical diffusivity (=default)
1739       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
1740    
1741    checkpoint55h_post
1742    o add verification test "vermix"
1743    o remove all the *_ioinc flags and replace with the single global
1744      outputTypesInclusive flag
1745    o allow to set a vertical profile of vertical diffusivity for T & S
1746    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
1747    o useMNC moved from data.mnc to data.pkg
1748    
1749    checkpoint55g_post
1750    o Renaming carbon AD experiments to comply with testreport conventions
1751    o Updating adjoint of Held-Suarez hs94.1x64x5
1752    o Fixing directives for non-ECCO forward_step, after ECCO directives
1753      have been fixed to avoid recomp. of do_oceanic_phys
1754      Works well for global_ocean.90x40x15,
1755      but recomp. issue remains for carbon
1756    o Updating adjoint output for natl_box_adjoint after
1757      pkg/ecco has been modified (see taga c55d_post)
1758    
1759    checkpoint55f_post
1760    o rename to timeave_init_fixed
1761    
1762    checkpoint55e_post
1763    o some delicate re-shuffle of store directives to avoid one
1764      extra call of do_oceanic_physics
1765      affects ecco_the_main_loop.F, do_oceanic_physics.F
1766      checkpoint_lev1_directives.h
1767    o NB: this may break global_ocean adjoint temporarily,
1768      but it is clear how to fix it. Will do later, need this now.
1769    
1770    checkpoint55d_post
1771    o ECCO specific cost function terms (up-to-date with 1x1 runs)
1772    o ecco_cost_weights is modified to 1x1 runs
1773    o modifs to allow observations to be read in as
1774      single file or yearly files
1775    o enable to read exf forcing fields as either
1776      single file or yearly files (flag useExfYearlyFields)
1777    checkpoint55d_pre
1778    
1779    o switch between 2-level and 3-level checkpointing
1780    o add ability of MNC to write local and "partial" (eg. 2D slices where
1781      the full 3D field is never actually stored) arrays to NetCDF files
1782      with the correct (that is, the complete multi-dimensional) set of
1783      array indicies
1784      - used in mom_vecinv() to write the diagFreq output
1785      - tested (demonstrated) in verification/aim.5l_cs
1786    o further mnc-ification
1787      - add verification/lab_sea to the list with mnc setups
1788      - fix undefined mnc v-names in cd_code
1789      - add kpp to mnc output (both snapshot and timeave)
1790    o non-hydrostatic code
1791      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
1792        in calc_gw.F
1793      - defaults to viscAh
1794      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
1795        friction or Leith) in non-hydrostatic mode, as long as there is
1796        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
1797    o pkg/cost
1798      extend simple cost functions to treat time mean quantities
1799      (T,U,V) via cost_accumulate_state from cost_tile
1800    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
1801        be 2 times larger than the minimum size the advection scheme requires.
1802        now get a perfect conservation of salt in advect_cs test-exp (updated)
1803    o GGL90 (Gaspar's TKE mixed layer)
1804      - add horizontal diffusion of TKE, requires exchanges in
1805        do_fields_blocking_exchanges, horizontal diffusivity is zero by
1806        default. In OPA there is no horizontal diffusion of TKE but the
1807        mixing coefficients are computed from a horizontal average of TKE of
1808        6 points or so. I think that diffusion has a little more physical
1809        justification.
1810      - clean up ggl90_calc in the hope of reducing memory usage (this hope
1811        was in vain)
1812      - mask tke-variable in ggl90_init
1813    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
1814    o fix biharmonic diffusion on CS-grid.
1815    o more obcs stuff
1816      - added obcs_external_fields_load as an alternative to the EXF-pkg option
1817        for reading boundary values. This routine is called from
1818        obcs_prescribe_read
1819      - updated obcs_check
1820      - changed sponge layer relaxation parameter units for days to seconds
1821      - turned off sponge layer by default
1822      - changed argument list of OBCS_CALC to myTime+deltaTclock
1823      - fixed about 35 bugs in obcs_external_fields_load
1824    
1825    checkpoint55c_post
1826    o obcs stuff
1827      - new runtime flags useOBCSprescribe, useOBCSbalance
1828      - re-arranged obcs_calc
1829      - moved exf_getobcs to obcs_prescibe_read
1830        obcs_prescibe_read is called after ORLANSKI stuff
1831        and independent of it (executable can contain all).
1832      - updated obcs_check
1833      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
1834        These may be necessary only if tangential velocities are
1835        prescribed at OB, not sure, needs testing.
1836    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
1837      which simplifies the calls and passes the ifc check-bounds test
1838    
1839    checkpoint55b_post
1840    o add a 2D scalar, Z location, exchange_2 routine.
1841    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
1842      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
1843      affects advect_cs results (for the wrong reason): update output.txt
1844    o use a more standard discretization for biharmonic viscosity ;
1845     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
1846      affects results of dome set-up: update output.txt
1847    o fix gad_advection.F (CubedSphere part), back to version 1.23
1848    o fix bug in mom_vi_del2uv.F (CubedSphere part).
1849    
1850    checkpoint55a_post
1851    o merged code to
1852      * prescribe/read time-dependent open boundaries
1853        (works in conjunction with exf, cal)
1854      * sponge layer code for open boundaries
1855      * each boundary N/S/E/W now has its own CPP option
1856        (healthy for the adjoint)
1857    
1858    checkpoint55
1859    o up-to-date adjoint of previous breaks
1860      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
1861      - global_ocean_ebm: adjoint still needs fix (TLM ok)
1862      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
1863      - carbon: * remove tr1-related adjoint verification
1864                * add ptracer as control variable
1865    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
1866      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
1867    
1868    checkpoint54f_post
1869    o in verification/carbin/ remove experiment related to
1870      ALLOW_PASSIVE_TRACER (array tr1 etc)
1871      code_ad/ input_ad/ results_ad
1872    
1873    o add two new packages
1874      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
1875        + subject to optimization (memory)
1876      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
1877        + subject to reordering (many GOTOs in the original code)
1878        + so far opps is called for every (i,j) point, and then operates in
1879          the vertical; one may want to reorder the scheme in order operate in
1880          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
1881          fields)
1882    o overhaul of IO so that we now have flags for MDSIO and/or MNC
1883      - all verification tests compile and run with linux_ia32_g77
1884      - defaults are compatible with current input files--nothing
1885        should change if you were not previously using MNC
1886      - MNC output has been added in numerous places (eg. timeave)
1887        but there are still a few writes not yet do-able with MNC
1888        (this is in progress)
1889      - flags now allow for either/or/both use of MDSIO and MNC and
1890        documentation will soon follow
1891      - numerous small formatting cleanups for ProTeX
1892    o add version info (via BUILD_INFO.h) to MNC and stdout
1893    
1894    checkpoint54e_post
1895    o add two new packages
1896      - pp81 (Packanowski and Philander, 1981), Richardson number and
1897        stratification dependent mixing
1898      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
1899      - these scheme operate in a similar manner as KPP (without ghat, of
1900        course), however there is only one diffusivity that is used for both
1901        temperature and salinity (and passive tracers)ç
1902    o add offline package
1903    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
1904      provided by Stephanie Dutkiewicz
1905    o genmake2: add ability to search for C compilers and cleanup test output
1906      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
1907    
1908    checkpoint54d_post
1909    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
1910    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
1911      leading to additional shift by 5 days each year of integration
1912       (i.e. leading to considerable offset over the years)
1913    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
1914    o start with no AB and no initial filtering (staggerTimeStep):
1915      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
1916    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
1917      (external loading & cpl import/export stay in forward_step.F)
1918    o update coupling interface to work with new staggerTimeStep
1919    o change MDSIO ptracers_pickup.
1920    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
1921    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
1922    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
1923    
1924    checkpoint54c_post
1925    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
1926      this affects (truncation error) output.txt of test-exp:
1927       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
1928    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
1929    o change Qnet to always be the net heat flux, (+upward).
1930      affects (truncation error) output of natl_box exp.: updated
1931    o define the max number of passive tracers in PTRACERS_SIZE.h
1932    o start to test mnc routinely in exp0
1933    o add sea-ice loading (sIceLoad) as a new forcing field.
1934    
1935    checkpoint54b_post
1936    o add testreport "-j JOBS" option for parallel builds (tested and pretty
1937       impressive on Altix and Opteron systems)
1938    o diagnostics can now write NetCDF files through the mnc package
1939    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
1940    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
1941    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
1942      affects (truncation error) output of lab_sea & natl_box exp.: updated
1943    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
1944    
1945    checkpoint54a_post
1946    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
1947    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
1948    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
1949    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
1950      + internal_wave (shift in writing cg2d_ini_res)
1951    checkpoint54a_pre
1952    
1953    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
1954      - modified verification/lab_sea and natl_box_adjoint accordingly
1955    
1956    checkpoint54
1957    checkpoint53g_post
1958    o prepare splitting of thermodynamics: store convect.counter in common block
1959    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
1960      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
1961    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
1962    o new parameter "nShapS": allow to treat differently S from T (nShapT)
1963    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
1964    o restore adjointability
1965    
1966    checkpoint53f_post
1967    o modifications that affect AIM experiment results (update output.txt):
1968      - no advection of S at top interface Nr (pkg/generic_advdiff)
1969      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
1970    o AIM pkg:
1971      - include stability function into surf.Flux derivative relative to Tsurf
1972      - calculate clear-sky radiation & surface temp. change (for diagnostics)
1973    
1974    checkpoint53e_post
1975    o merged cylindrical coord configuration
1976    o added rotating_tank experiment
1977    checkpoint53e_pre
1978    
1979    checkpoint53d_post
1980    o faulks upgraded: re-generate output.txt that have changed:
1981       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
1982    o Added Bryan and Lewis, 1979, vertical diffusivity profile
1983    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
1984    o added Sadourny discretization of Coriolis
1985      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
1986      - re-enabled use of omega3 (useAbsVorticity)
1987    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
1988      vector-invariant equations
1989      - note: does *NOT* yet use same variable visc. for no-slip BC's.
1990    o recoded the lateral boundary conditions for non-hydrostatic w, this time
1991      hopefully without new bugs
1992      - still to do: biharmonic friction for non-hydrostatic w
1993    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
1994    o regenerated output for global_ocean_ebm (using -ieee)
1995    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
1996      of mom_common/
1997      - simple re-arrangement of instructions within computing loop
1998    checkpoint53d_pre
1999    
2000    checkpoint53c_post
2001    o new version of coupler for AIM+thSIce and Ocean models
2002     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
2003     - land: change Evaporation of snow
2004     - aim with thSIce: fix bug in snow-precip.
2005    o changes to calc_gw.F
2006     - bug fix for w^2 term near the bottom boundary
2007     - (hopefully) improve the lateral slip boundary condtions for use with
2008        partial/looped cells
2009      - because the bug fix changes two verification experiments anyway (exp5
2010        and plume on slope), change the lateral boundary condition from half slip
2011        to the value of no_slip_sides
2012    o ebm package wasnt quite up to the parallel task. Fixed that.
2013    o Adjoint of EBM package + verification
2014      * TLM OK
2015      * ADM not sufficient accuracy yet (needs further testing)
2016    
2017    checkpoint53b_post
2018    o Commiting new energy balance model to repository
2019      * package is pkg/ebm
2020      * verif. is verification/global_ocean_ebm
2021      * references are in ebm_driver.F
2022    C      * X. Wang, P. Stone and J. Marotzke, 1999:
2023    C        Global thermohaline circulation. Part I:
2024    C        Sensitivity to atmospheric moisture transport.
2025    C        J. Climate 12(1), 71-82
2026    C      * X. Wang, P. Stone and J. Marotzke, 1999:
2027    C        Global thermohaline circulation. Part II:
2028    C        Sensitivity with interactive transport.
2029    C        J. Climate 12(1), 83-91
2030    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
2031    C        Destabilization of the thermohaline circulation
2032    C        by atmospheric eddy transports.
2033    C        J. Climate 7(12), 1870-1882
2034    o Will need long integration testing.
2035    checkpoint53b_pre
2036    
2037    o created pkg/mom_common in preparation for variable viscosity code
2038    o renamed and split ini_mnc_io
2039    o pkg/land: only liquid water can diffuse or run-off
2040    o AIM using land: soil wetness availability account for snow
2041    o added printMapIncludesZeros to EEPARMS namelist
2042    
2043    checkpoint53a_post
2044    o restore TAMC compatiility for exf_constants.h
2045      (no usage of _d in .h)
2046    o Additional storing in KPP in an attempt to fix
2047      TAMC problem with adjoint of KPP code.
2048      (no success...)
2049      Identical code works fine with TAF.
2050    o Fixed verification/natl_box_adjoint experiments.
2051      Initial conditions for Experiments 4 and 5 are now
2052      set to "SEAICE_initialHEFF=0", which is more reasonable,
2053      and hence gives results closer to that of Experiment 2.
2054      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
2055    
2056    checkpoint53
2057    o stable checkpoint with up to date adjoint
2058      TLM tests only run for 1st grdchk at the moment. Its unclear if
2059      this is a code problem or a problem with resetting code for g_
2060      variables that is being autogenerated wrong.
2061      Otherwise:
2062       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
2063       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
2064         are both still in chaos following their security messes.
2065    
2066    checkpoint52n_post
2067    o various build (mostly genmake2) changes including:
2068      - ability to build/run more easily within Cygwin and MacOS X
2069      - more complicated Makefiles with a stronger dependence on Gnu Make
2070    o pkg/seaice modifications
2071      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
2072        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
2073        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
2074      - changed proxy for geostrophic velocity and updated
2075        verification/lab_sea/results/* accordingly
2076      - removed ADI dynamic solver from pkg/seaice
2077      - replaced all occurrences of 1/CSTICE or 1/CSUICE
2078        they caused a segmentation fault under certain circumstances
2079      - removed unused field WATR
2080    o bug fix in exf-package:
2081      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
2082         now reflect that.
2083    o small fixes in the cal-package:
2084      - set reference date to first of January for the 'model'-calendar
2085      - failing of cal_CheckDate in cal_FullDate now actually results in a
2086        warning
2087    o small modifications in exf-package to increase flexibility:
2088      - change climtempfreeze from a constant to a runtime parameter that
2089        is specified in data.exf_clim (default = -1.9)
2090      - introduce runtime parameter windstressmax (default = 2.0) that is
2091        specified in data.exf
2092    o fix in pkg/thsice:
2093      - update Evap (Tsf changes) to be consistent with Latent heat flux
2094      - maintain snow precipitation unchanged (even if Tsf >=0).
2095     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
2096    
2097    checkpoint52m_post
2098    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
2099      this does not change any of the results, because myIter=0 in swfrac always
2100      lead to jwtype=2 (the default anyway), but the call makes little sense
2101      as a default
2102    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
2103    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
2104      atmospheric model (AIM) to use it ; add a "slab ocean" component.
2105    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
2106    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
2107    o extending useSingleCpuIO option to work with new exch2 I/O format
2108      - old-style, missing-tile I/O is still accessible by defining CPP
2109        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
2110    o monitor package can write to NetCDF files and/or STDOUT
2111    o fix re-definition bug in MNC_GRID_INIT_ALL()
2112    o doc/api_reference added
2113      - a framework for building an API Reference Manual using all
2114        the "protex" comments embedded in the code
2115      - see pkg/generic_advdiff, pkg/mnc for examples
2116    o MNC:
2117      - make myThid the last argument for all subroutines
2118      - new default for the grid files: NO halos
2119      - add useMNC and other run-time flags
2120      - separate per-file-group handling of the unlimited dimension
2121      - early initialization of MNC w/ flags read at the eeboot stage
2122        and lookup tables set in initialize_fixed
2123      - write all MNC output to a freshly-created directory
2124    o thermodynamics sea-ice (thsice) is now tested with testreport.
2125    o test exp. advect_cs: use the standard cs32 grid ; update output.
2126    o Added functionality to grdchk:
2127      pick global i,j,k position (or nearest wet) where to perform check.
2128    
2129    checkpoint52l_post
2130    o new land formulation:
2131      a) use ground enthalpy as prognostic variable to ensure exact
2132         energy conservation.
2133      b) account for water temperature and for latent heat of freezing
2134         in all processes (rain, run-off, ground storage)
2135      c) compute surface and ground temperature implicitly.
2136    o aim_v23 modification for new land model:
2137      a) Treat separately land / ocean / sea-ice surface fluxes
2138         to allow implicit computation of land & sea-ice surface temp.
2139      b) add snow precipitation.
2140    checkpoint52l_pre
2141    
2142    o fix problem (when 1 tile is empty) in min/max monitor.
2143    o fix bug in timeAve (u,vZetatave in common block)
2144    o no restoring terms under ice for pkg/seaice
2145    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
2146    o bug fix for pkg/seaice pickups
2147    o change MNC call locations and add coordinate attributes
2148    o mask vorticity at the corner ; affects global_ocean.cs output
2149    o fix ini_curvilinear_grid ; test CS experiments with mpi
2150    o aim.5l_cs: modify sea-ice fraction input file ; update output
2151    o exf: Adding simple range check routine for exf fields after read
2152    
2153    checkpoint52k_post
2154    o removed top-level directory "diags"
2155      - we migrated these functions to pkg/timeave a long time ago
2156    o fixed bug introduced in pkg/monitor
2157    o accuracy ctrlprec = 32 insuffient for gradient checks using
2158      averaged fields (I/O via cost_averages)
2159      -> use ctrl.h in active_file*.F to control I/O precision.
2160    o paramter list of CALL ADTHE_MAIN_LOOP
2161    o added initial do_the_model_io to ecco
2162    o set all ...Freq to zero after cost_final
2163      taveFreq, dumpFreq, pChkptFreq
2164    o MAIN and ECCO differentiability restored
2165    
2166    checkpoint52j_post
2167    o fix nchklev in tamc.h for global_ocean...
2168    o Bringing flow and store directives up-to-date
2169    o Really weird thing!
2170      call do_the_model_io from the_main_loop with parameters
2171      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
2172      TAF places a faulty re-call of initialise_varia
2173      after cost_final call which should not be there!
2174    checkpoint52j_pre
2175    
2176    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
2177      error messages
2178    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
2179    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
2180      debug output
2181    o modfied mdsio_writefield.F to handle non-global files under exch2
2182    o update AIM Cubed-Sphere exp (aim.5l_cs):
2183      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
2184    o update AIM Equatorial Channel exp:
2185      use standard aim_v23 pkg and change the SST fields to be more realistic.
2186    o globalFile now works with exch2
2187    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
2188      mon_vort3.F to make exch2 friendly with >1 tile per cube face
2189    o limit timeave output for hi-res integrations
2190    
2191    checkpoint52i_post
2192    o removed CPP_EEOPTIONS.h from verification/*/code
2193    o updated the tiling for global_ocean_pressure
2194    checkpoint52i_pre
2195    
2196    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
2197      the old pkg/aim).
2198    
2199    checkpoint52h_pre
2200    o shortened offending lines in exch2_send_rx?.template
2201    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
2202    o genmake2: add build & execute test for NetCDF code
2203    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
2204      old grid files, moved CPP_EEMACROS.h to pkg/exch2
2205    o added useSingleCPUIO flag to monitor.F and mon_out.F
2206    o added temporary hack for sea-ice dynamics on the cube:
2207      metric terms are ignored and it is assumed that
2208      there is no sea-ice on cube faces 1, 2, 4, and 5.
2209    
2210    checkpoint52f_post
2211    o added exch2 cube routines to pkg/exch2
2212    o modified hs94.cs-32x32x5 to use it
2213    o added new grid files to hs94.cs-32x32x5
2214    checkpoint52f_pre
2215    
2216    checkpoint52e_post
2217    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
2218      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
2219    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
2220      to work with implicit vertical advection and AB ;
2221    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
2222    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
2223     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
2224    checkpoint52e_pre
2225    
2226    o fix bug in impldiff when Nr=1 or Nr=2.
2227    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
2228    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
2229    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
2230      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
2231    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
2232    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
2233    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
2234    
2235    checkpoint52d_post
2236    o re-tiled many expts to allow comparison in multi-processor mode
2237      - updated output accordingly
2238      - changed hs94.128x64x5 to use intial T from file rather than use the
2239        random number generator
2240    o add infrastructure in model routines for fizhi and gridalt packages
2241    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
2242    o changes to permit hi-res, cubed-sphere, configuration
2243      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
2244      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
2245      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
2246        of surface winds for the cube
2247      (A verification experiment, based on global_ocean.cs32x15, but with
2248       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
2249       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
2250       complete with example surface forcing files and matlab scripts to look
2251       at the output and compare it with that of global_ocean.cs32x15.)
2252    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
2253       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
2254       to conform to the common rule.
2255    o check-in the first version of the coupler + interfaces for multi-components
2256       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
2257       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
2258       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
2259       - ocean and atmos. share the same horizontal grid (no interpolation).
2260       - exchanges between component and coupler is done in forward_step
2261    o new verification experiment, cpl_aim+ocn:
2262       coupled ocean - AIM atmosphere on cs32 grid.
2263    
2264    checkpoint52d_pre
2265    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
2266    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
2267    
2268    checkpoint52c_post
2269    o Fixing OPTIONS files for use of exf:
2270      - ALLOW_ECCO not needed
2271      - ECCO_CPPOPTIONS.h should not be included from
2272        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
2273        as has been the case in the past
2274      - All cal/exf related options are currently set in
2275        single header file. Should remain so until we
2276        agree on a consistent new policy.
2277    o Removed all CPP options for cal package.
2278      cal has no more CPP options.
2279    o modified STOREs in GAD_ADVECTION
2280    o corrected key comp. for passkey
2281    
2282    checkpoint52b_post
2283    o new version: "thsice" of thermodynamic sea-ice pkg:
2284     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
2285     - modify fluxes but do not change theta directly;
2286     - light cleaning of bulk_force pkg (still needed with thsice).
2287     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
2288       + output_thsice.txt to test thsice & bulk_force pkgs.
2289    o put back grid & coriolis monitor output.
2290    checkpoint52b_pre
2291    
2292    o call "do_the_model_io" at the beginning (=> dump initial state)
2293    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
2294    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
2295      (need info on NUMBER_OF_PTRACERS)
2296    o missing PTRACERS headers in some routines
2297    o default tamc.h in pkg/autodiff supposed to crash
2298      to ensure proper customization
2299    
2300    checkpoint52a_post
2301    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
2302      - moved surfaceTendencyTice from pkg/seaice to main code
2303      - subroutine FREEZE_SURFACE now limits only surface temperature
2304        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
2305        => new output.txt for global_ocean.cs32x15 & global_with_exf
2306      - keep the old version of FREEZE for backward compatibility;
2307        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
2308      - corresponding modifs for TAF directives
2309    o added surface flux output variables to TIMEAVE_STATVARS
2310    o time-averaged output for pkg/ptracers
2311    o fix problem with ECCO-related divided adjoint
2312      snapshot file was missing some ad-variables,
2313      but no warning issued by TAF
2314    
2315    checkpoint52a_pre
2316    o some bug fixes for #undef REAL4_IS_SLOW
2317    
2318    checkpoint52 = ecco_c52_e35
2319    o after testing adjoints of checkpoint51u_post
2320    
2321    checkpoint51u_post
2322    o this is the post-merge tag of the ecco-branch
2323      (needs another clean checkout and re-testing)
2324    o various natl_box_adjoint configs and results
2325      but no input fields
2326    o obcs adjoint not yet merged!
2327    o adding ECCO global 1x1 and 2x2 degree configs
2328    o updated/extended some store directives for seaice
2329    o pkg/ecco now containes ecco-specific part of cost function
2330    o top level routines the_main_loop, forward_step
2331      supersede those in model/src/
2332      previous input data.cost now in data.ecco
2333      (new namelist ecco_cost_nml)
2334    o in ctrl/ cleaned some cross-dependencies and updated CPP options
2335    
2336    checkpoint51t_post
2337    o this is the pre-merge tag of the ecco-branch
2338    
2339    checkpoint51s_post
2340    o cleanup: removed various obsolete #define-s
2341    o pkg/grdchk
2342      - renamed 'ph-grd 3' to 'grad-res'
2343      - merged from ecco-branch
2344        (remaining bug fixes for obcs gradient checks)
2345      - additional high-precision output for testreport
2346        (grep for 'precision_grdchk_result')
2347    
2348    checkpoint51r_post
2349    o cleaned up or removed CPP_OPTIONS.h files
2350    o updated results for some of the tests to reflect the new
2351      optfiles (-ieee: -O0 instead of -O3)
2352    
2353    checkpoint51q_post
2354    o cd_code:
2355      - moved cd_scheme.F -> cd_code_scheme.F
2356      - separate read_checkpoint from cd_code_ini_vars.F
2357      - separated cd_code part from write_checkpoint
2358      - updated AD_SOURCE, generated .flow
2359      - added CD_CODE_VARS.h to the_main_loop
2360      - Moving cd_code specific store dir.s to pkg/cd_code
2361    o ctrl package totally restructured
2362      - pack/unpack now optional and decoupled from
2363        xx_/adxx_ I/O
2364      - ctrl_pack/unpack cleaned
2365        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
2366      - confined inclusion of AD_CONFIG.h to where necessary.
2367    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
2368    
2369    checkpoint51p_post
2370    o create initial cd_code package
2371      - WARNING: the initialization of fields within packages
2372        is broken because INI_FIELDS (where READ_CHECKPOINT is
2373        called) is called *before* PACKAGES_INIT_VARIABLES.
2374        This seems to be backwards since
2375        1) its important to initially zero the entire field including
2376           the "halo" region
2377        2) zeroing needs to be done *before* reading pickup info
2378           and the pickup call might or might not happen in any
2379           particular run
2380      - this needs an overhaul for R2
2381    o cleanup verification/*/code/GMREDI_OPTIONS.h
2382    o cleanup testreport
2383    
2384    checkpoint51o_post
2385    o bringing AD-related verif's up to date with genmake2
2386      - carbon/
2387      - global_ocean.90x40x15/
2388      - hs.94.1x64x5/
2389      - (front_relax/ )
2390    o (more) consistent directory structure for AD-related verif.'s
2391    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
2392    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
2393    o bug fix in find_alpha.F for MDJWF:
2394      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
2395        change rho -> rho-rhoConst
2396      - replace call find_rho to find_rhonum
2397    o initialisation of rFlx extended to full array (required by TAF)
2398      and shifted to thermodynamics
2399    o removed PTRACERS.h in ptracers routine
2400    o added surfacetendencyPtr to S/R parameter list pracers_forcing
2401    o Correcting initialisations for fVerU, fVerV.
2402    o helping TAF to recognize dependency on kUp for
2403      fVerU, fVerV
2404    o Replacing delZ by delR in pkg/ctrl/
2405    checkpoint51o_pre
2406    
2407    o undid all of cp51 pending some cleanups and discussion
2408    o added the [#include "AD_CONFIG.h"] statement to all files that need
2409       it for adjoint/tl #defines
2410     o re-worked the build logic in genmake2 to support AD_CONFIG.h
2411     o removed tools/genmake since it no longer works
2412    
2413    checkpoint51n_post
2414    o modifications to make FREEZE flux visible to pkg/kpp
2415      - moved surfaceTendencyTice from pkg/seaice to main code
2416      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
2417      - subroutine FREEZE now limits only surface temperature
2418        (this means new output.txt for global_ocean.90x40x15,
2419         global_ocean.cs32x15, and global_with_exf)
2420    o added surface flux output variables to TIMEAVE_STATVARS
2421    
2422    checkpoint51n_pre
2423    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
2424    o added [#include "AD_CONFIG.h"] to all files that use the following
2425      defines:
2426      - ALLOW_ADJOINT_RUN
2427      - ALLOW_TANGENTLINEAR_RUN
2428      - ALLOW_ECCO_OPTIMIZATION
2429    
2430  checkpoint51m_post  checkpoint51m_post
2431  o incorporating changes to get TAMC/TAF working in genmake2  o incorporating changes to get TAMC/TAF working in genmake2
2432    - added new TAMC/TAF targets to the Makefile    - added new TAMC/TAF targets to the Makefile

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