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revision 1.95 by adcroft, Tue Nov 5 19:14:26 2002 UTC revision 1.931 by atn, Fri Dec 21 22:49:09 2007 UTC
# Line 1  Line 1 
1  $Header$  $Header$
2    $Name$
3    
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    o pkg/salt_plume: clean up salt_plume_frac.F to
8      remove redundancy in PlumeMethod 1 and 4
9    o pkg/kpp: added saltplume diagnostics
10    o pkg/obcs and pkg/seaice:
11      - do not set uice and vice to zero when OB*icefile are unspecified
12      - OBCS_SEAICE_AVOID_CONVERGENCE is undefined by default
13      - moved seaice tracer obcs after call to seaice_growth
14    o pkg/salt_plume: added various options for salt plume depth
15      criterion and for vertical distribution of the salt
16    
17    checkpoint59l
18    o pkg/ptracers: new version of ptracers pickup:
19      read meta file and write only fields which are needed to restart.
20      ( same logic as main pickup file ; also using pickupStrictlyMatch )
21    o pkg/seaice:
22      - add timescale for melting due to warm mixed layer as a means of
23        setting SEAICE_availHeatFrac more conveniently
24      - add a CPP-flag/runtime parameter check for flooding algorithm
25      - reformulated availHeat in seaice_growth.F to be independent of AREA
26    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
27      unit changes
28    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
29    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
30      SX vector computer.
31    o pkg/seaice:
32      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
33        seaice forcing fields can now be read only through pkg/exf
34      - removed some unused halos
35    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
36    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
37      or U/VICE from U/VWIND before computing U/VSTRESS
38    
39    checkpoint59k
40    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
41      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
42    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
43      all experiments pass when compile with un-initialised var. checking option.
44    o added pkg/salt_plume
45    o script to test restart (for now, in MITgcm_contrib/jmc_script)
46    o pkg/seaice: new read/write pickup version.
47      read meta file and write only fields which are needed to restart.
48      ( same logic as main pickup file ; also using pickupStrictlyMatch )
49    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
50    o lab_sea.hb87: modify the domain & update output.hb87.txt :
51      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
52      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
53      process. Fixed here by closing the domain at the Northern boundary.
54    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
55    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
56      a set of consecutive levels in/from a 3-D array.
57    o pkg/ptracers:
58      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
59      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
60    
61    checkpoint59j
62    o in pkgs: dic, obcs, offline, rbcs:
63      standard way to compute coeff. for time interpolation between 2 time reccords
64      which retains full precision (& make results less dependent on compiler).
65      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
66    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
67      packages instead of reading ice cover and wind speed separately
68    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
69     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
70      to allow to compile customized code before the update)
71    o cleaning-up:
72      - fix CPP instruction syntax in pkg/obcs
73      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
74        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
75      - fix some threads issue in IO parts.
76    o pkg/dic:
77      - add tons of "_d 0" (--> much better testreports !)
78       and then update outputs of tutorial_global_oce_biogeo
79    o pkg/mom_fluxform:
80      add a special version of momentum advection intended to conserve momentum
81      next to a bathymetry step or a coastline edge. (default = off = #undef)
82    o new read/write pickup version:
83      - for now, only implemented for main (mdsio) pickup file.
84      - write out only what is needed to restart; merge pickup_nh , pickup_ph
85        and main pickup together.
86      - read meta file; read only what is needed to restart; stop if a field
87        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
88        if it make sense (even if the restart is not perfect).
89      - if no meta file, assume that pickup to read corresponds exactly to
90        a pickup that would currently be written.
91      - read pickup written in the old format (until checkpoint59i) if it
92        recognizes an old meta file (no field-list).
93      - add a meta file in exp. which starts from a pickup: 2 cases:
94        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
95         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
96        b) a meta file describing the content of the associated pickup file
97         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
98    o pkg/mdsio & pkg/rw:
99      - new routine to read a meta file ; new set of routine to read
100        Multiple-fields file (with meta file).
101    o added open boundary conditions capability for seaice
102        HSNOW, HSALT, UICE, and VICE
103    
104    checkpoint59i
105    o adjoint:
106      * fix multiDimAdvection adjoint
107        (partial recomputation problem by TAF for fVerT(:,:,kDown)
108        and comlev1 size definition (maxpass vs. max. number of tracers)
109      * verification/global_ocean.90x45x15 adjoint now tests
110        NLFS and multiDimAdvection using DST3 (=30)
111      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
112    o pkg/kpp: add "_d 0" to real constant (if missing);
113      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
114      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
115    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
116      for internal parameters related to restart process (formerly from PARAMS.h)
117      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
118    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
119      as argument. (only atm2d & obcs write_pickup have not yet been updated)
120    o pkg/monitor:
121      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
122      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
123      - account for deep Atmosphere factor and density factor (anelastic)
124    o added open boundary conditions capability for seaice HEFF and AREA
125    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
126      thermodynamics
127      - requires a little reorganization, which affects the testreport results
128        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
129        so that now the conservative form is tested
130      - add a few comments
131    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
132    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
133    o add new diagnostics to seaice: advective, diffusive fluxes (only for
134      multidim-advection, for scheme 2 they are not filled) and transports,
135      thermodynamic growth rates
136    o change units of EmPmR (inside the code, + within coupling interface)
137      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
138      Affects results @ truncation level (cg2d match) and update output of
139       experiments: lab_sea(6), global_ocean.90x40x15(10),
140      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
141      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
142      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
143      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
144    
145    checkpoint59h
146    o pkg/exf:
147      - improve vectorization by moving if-statement out of loops in
148        exf_mapfields, exf_radiation
149      - exf_bulkformulae.F: introduce 2D fields and vectorize code
150    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
151    o testreport:
152      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
153        monitor & update offline_exf_seaice exp. output.
154      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
155    o pkg/seaice:
156      - bug fix in the evp solver: boundary conditions were affected be
157        masking of zMax/zMin (changes results)
158      - minor bug fix in boundary conditions in seaice_calc_strainrates
159        (changes results for no_slip)
160      - seaice_lsr.F: make interpolation of eta dependent on boundaries
161      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
162      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
163        stress formulation and no-slip boundary conditions
164    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
165      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
166    o pkg/seaice: a first HSALT time stepping equation has been checked in
167    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
168      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
169      without requiring DO-IF statements
170    o pkg/thsice:
171      use continuous power-law function for partition of energy between lateral
172      melting/freezing and thinning/thickening ; old code using step function
173      still available with #undef THSICE_FRACEN_POWERLAW
174      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
175    o testreport: change AD testing : check against results/output_adm.txt
176      using same scripts as for forward test.
177    
178    checkpoint59g
179    o adjoint testing: in preparation for changing testreport:
180      - output format: cost and grad written on separated lines
181      - ad output results in directory "results" (instead of "results_ad")
182    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
183    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
184    o pkg/ecco: allow user defined cost function contributions
185    o testreport:
186      Allow to choose (per experiment) the list of tested output variables
187       and the main variable (used to issue a pass/FAIL ) ;
188      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
189      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
190      Also modify printing of summary:
191       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
192       b) echo the list of tested variables in the individual summary.txt of
193          each experiment.
194    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
195      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
196      (but still depend on the tile decompostion of the domain).
197    o pkg/seaice: change a discretization detail to make the B-grid code
198      "more symmetric". This change is likely to remove all "ridges/leads" that
199      where quasi-aligned with the grid in B-grid solutions. It may also be
200      the solution to the stress coupling issues with the B-grid.
201    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
202      remove .cvsignore from input dir. (since testreport no longer run here).
203    o pkg/thsice:
204     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
205     - fix reshaping of sea-ice just after advection:
206       melt all the ice only if ice-volume is too small.
207     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
208       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
209     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
210    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
211      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
212    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
213      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
214      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
215      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
216      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
217      -> update output.txt
218    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
219     this affects truncation error: -> update output.txt of exp:
220      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
221      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
222    
223    checkpoint59f
224    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
225    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
226      a bounded range (in forward mode)
227    o pkg/ecco, ctrl, autodiff and mom_common:
228     internal parameter controls, completements of implementations
229    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
230    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
231      (not seem any difference in testing results).
232    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
233       at face corners.
234    o pkg/generic_advdiff:
235     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
236      loop range indices for computing vertical advection tendency
237      and do the calculation in the interior only (no overlap) ;
238      for now, only implemented for SOM advection (to save CPU time).
239     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
240    o exch2 adjoint
241      First set of changes:
242      - add exch2 hand-written adjoint templates
243      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
244        This will require cleanup in pkg/autodiff/*.F
245        (changed routines currently kept separate in verif. code/)
246      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
247        that used to hide exch2 or cubed-sphere specific code
248        (commented via 'cph-exch2')
249    o pkg/seaice
250      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
251    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
252       output of global_ocean.cs32x15.thsice .
253    
254    checkpoint59e
255    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
256      for B-grid vector (not yet tested) and C-grid vector (<- only used
257      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
258    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
259      (#ifdef ALLOW_SALT_PLUME)
260    o gather_2d/scatter_2d: removed halo regions
261    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
262      scheme and the corresponding test case (under front_relax dir). For now,
263      only available with Skew-flux form and not yet tested in realistic set-up.
264      adjoint: store directives updated, but gradient checks deteriorated,
265      so maybe GM/Redi adjoint is now broken.
266    o seaice adjoint
267      * add AREA, HEFF, HSNOW as control variable
268        (should not change lab_sea results)
269      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
270    o pkg/seaice:
271      * added computation of saltFlux in seaice_growth;
272        For time being, sea ice salinity is assumed constant
273        contribution of snow flooding to freshening of sea ice is neglected.
274        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
275        defaults to 0.0 in order to maintain backward compatibility.
276        Typical values for SEAICE_salinity are 4 to 10 g/kg.
277      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
278      * added SEAICE_availHeatFrac, which specifies fraction of surface level
279        heat content used to melt or grow ice
280      * commented out cap of HICE: it helps keep ice thinner
281      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
282      * applied OBCS T/S mask to HEFFM sea ice mask
283    
284    checkpoint59d
285    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
286     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
287     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
288    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
289     and change default value of parameter "GM_Small_Number";
290     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
291       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
292       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
293    o pkg/ecco: cost function when applying pkg/smooth to controls
294    o pkg/ctrl: add forcingPrecond run time parameter
295    o pkg/seaice:
296     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
297     - fix bug in metric terms of u-equation in LSR solver (implicit part),
298       changes verification/lab_sea
299     - rearrange implicit part of u-equation in LSR solver to make it easier to
300       read, understand, and debug. This causes changes at the truncation level.
301     - fix (serious) bug in the boundary conditions (sign error in the implicit
302       part) of the LSR solver. Changes all LSR results.
303     - fixed problem with HSNOW initialization to avoid thick snow when AREA
304       is initilized with small values - does not change lab_sea results.
305     - added HsnowFile initialization capability
306    o pkg/smooth: addition to model/src and pkg/ctrl so allow
307     initialization of pkg/smooth and application to control vector
308    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
309    o dependencies: pkg/profiles requires pkg/cal
310    o pkg/profiles:
311     - added option ALLOW_PROFILES_GENERICGRID
312         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
313         that interpolation information (grid points and coefficients) is provided
314         within the netcdf input files.
315         -> sample matlab scripts can be found in MITgcm_contrib/gael
316         that allow you to prepare netcdf input files.
317     - also modified: cleaner include statements, cleaner error print statements,
318       cleaner stops when error, and more tests of the netcdf input files consistency.
319    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
320    o pkg/seaice:
321     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
322       requires a new routine: seaice_diagnostics_fill.F
323     - make sure that seaice does not move if not forced (pressure replacement
324       method, Hibler and Ip, 1995), changes results
325     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
326     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
327       It is turned off by default (=-1.), because it changes the results.
328     - make it possible to read AREA from a file, too.
329    
330    checkpoint59c
331    o add S/R and diagnostics for oceanic mixed-layer depth
332    o move GMRedi call after all vertical mixing schemes (including KPP)
333    o pkg/thsice:
334     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
335      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
336    o pkg/obcs:
337     - bug fix for balance code
338    o pkg/seaice:
339      - allow values of SEAICE_elasticParm > 1
340      - add new parameter SEAICE_evpTauRelax as an alternative
341        to SEAICE_elasticParm
342      - make lsr boundary conditions free slip (by default), changes result
343      - add code for no slip boundary conditions for lsr
344      - set minimum of zeta to zero (and not 4e8) (changes results)
345      - add a cap on AREA after advecting AREA if seaice_growth is not called
346    o change calculation of Visbeck K:
347      - no longer depend on tapering scheme; instead, compute slope (limited
348        by GM_maxSlope). this is equivalent to what was comuted before with
349        clipping or linear tappering.
350      - fix vertical averaging (wrong by 1/2 level)
351      - leave the old version (but will not be maintained) within
352        #ifdef OLD_VISBECK_CALC / #endif
353      - update output of exp. ideal_2D_oce
354    o change error catch in calc_r_star to improve vectorization
355    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
356      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
357    o adjoint:
358      Re-organized adjoint checkpointing according to Matt Mazloff
359      (but with modifs/completions/cleanups)
360      Storing is now bundled into large arrays to optimized I/O
361      (and second step in cleanup of the_main_loop)
362    
363    checkpoint59b
364    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
365      - export/import (between ocean & coupler) fields needed for ocean DIC.
366    o pkg/seaice:
367      - get rid of three more exchanges seaice_calc_viscosities (required
368        different loop boundaries in seaice_lsr and seaice_ocean_stress)
369      - bug fix in seaice_ocean_stress (update of lab_sea required)
370      - reduce loop boundaries to necessary minimum also in seaice_evp
371      - go back to the old way of computing deltaC/Z as the adjoint likes that
372        better
373    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
374      passive tracer to an Age Tracer) + update output.txt
375    o pkg/exf:
376      - implement A-grid / C-grid selection for wind-stress input files.
377      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
378      for now, in exf_bulk_largeyeager04.F only :
379      - change implementation for case where windspeed + 2. components wind-stress
380        are read-in. AND use rhoConstFresh to convert evap.
381    o pkg/seaice:
382      - use correct EXCH_UV for wind-forcing (on A-grid).
383      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
384        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
385    o pkg/exf:
386      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
387      EXF_INTERPOLATION:
388      - merge global_with_exf/code version of exf_interp_read.F
389        to the main code ;
390      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
391        reading the file ; Important: This options needs to be defined to recover
392        previous code.
393        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
394      - no longer loose real*8 precision along the way when using exf_iprec=64.
395    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
396      - change discretisation of evp-solver in order to avoid another exchange
397        (changes lab_sea) and clean up a little
398      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
399        help the adjoint (this also changes the results slightly)
400      - add a few "_d 0" where they had been missing in seaice_evp.F
401      - cleaning up: remove unused seaice_calc_rhs.F
402    o pkg/exf: some cleaning-up:
403      - change various "constants" into runtime parameters
404      - cleaned-up Large&Yeager04 routine which should eventually
405        replace exf_bulkformulae.F (changed names of S/R and CPP)
406        and merged various ALLOW_ATM_WIND options
407     only used with thsice pkg (in thsice_get_exf.F):
408      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
409        which are used when useStabilityFct_overIce=TRUE (= the default)
410      - change default values of ice & snow emissivity and scale downward LW
411        by ice & snow emissivity.
412    o pkg/thsice:
413     fix few little problems, in thsice_calc_thickn.F:
414      - growth vertically (and not laterally) if iceFrac == iceMaskMax
415      - melt only laterally if hIce < hThinIce (as the comments say)
416      and in thsice_extend.F:
417      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
418      - start to form ice as soon as the minimum ice-volume is reachable.
419     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
420      and cpl_aim+ocn
421    o pkg/kpp
422     - move computation of surface related input fields to KPP into a new
423       subroutine kpp_forcing_surf.F
424     - remove wrong (within bi,bj loops) EXCH calls.
425     - little cleaning (add argument myThid in last position, cvs header ...)
426     - for now, fix conservation problem by exchanging KPPviscAz (may not
427       be the best fix)
428    o pkg/seaice
429     - check for inconsistent evp parameter/cpp-flag combination
430     - remove leftover errIO flat for obsolete name list error handling
431    o OpenAD
432     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
433    
434    checkpoint59a
435    o pkg/seaice: some parameter clarifications and a little bit of clean up
436    o pkg/thsice: rename run-time parameters:
437       himin       -> hIceMin
438       himin0      -> hThinIce
439       hihig       -> hThickIce
440       i0          -> i0swFrac
441       transCoef   -> bMeltCoef
442       frac_energy -> fracMelting
443      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
444       with default values (for now) that do not change the results.
445      remove old version of thsice vars advection in pkg/seaice.
446    o in FFIELDS.h:
447      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
448      - make pLoad & sIceLoad always available (but still only used if
449         ATMOSPHERIC_LOADING is #define).
450    o pkg/kpp: replaced _KPP_RL with _RL
451    o bug fixes for vertical diffusivity computations when both KPP and
452        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
453        are no longer updating the vertical diffusivity array
454        (passed as argument) but are (re-) setting those arrays.
455    o pkg/seaice: fix bug in evp solver, while doing that
456      - change (improve?) discretization of stress computations for both
457        cgrid-lsr and evp solver
458      - add a new routine to compute strain rates
459      - the above changes lab_sea results
460      - add no slip conditions for evp solver (off by default), lsr-version
461        may follow
462      - fix exchange for shear at Z-points (does not change lab_sea)
463      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
464        (to force the user to pick a time step since there is not "safe" way
465        of choosing it)
466      - add principal stress diagnostics
467      - rearrange fields for evp a little to avoid having to call a: too many
468        exchanges and b: exchanges for stress trensor components which we do
469        not have.
470      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
471        of evp, complete rewrite for lsr case (latter is does not yet work
472        in all cases)
473    o pkg/kpp: add code to have mixing in shelf ice caverns
474      - add myThid to all kpp routines (long overdue)
475    
476    checkpoint59
477    o pkg/exf:
478      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
479        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
480      - move exf header files from lower_case.h to UPPER_CASE.h ;
481        add missing cvs Header & Name
482      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
483      - add namelist param. selectStressGridPosition, exf_monFreq
484      - retire many _CLIM routines, and remove data.exf_clim
485        + params moved to data.exf
486        + climsst, climsss now handled by exf_set_gen, i.e.
487          climss?period=0 refers to constant field,
488          climss?period=-12 to monthly forcing
489      - split up namelists in data.exf
490    o pkg/seaice:
491      - remove seaice_exch and seaice_exch_uv
492      - remove superfluous exchange of theta
493      - add myThid to seaice_budget_ocean/ice
494      - add new interface for atmospheric wind forcing (C-grid only)
495        + new routine
496        + two new field (taux, tauy for stress over ice)
497        + removed one global field (DAIRN) for C-grid case only
498    o pkg/thsise
499      - 2nd set of modifs for thsice adjoint in conjunction with exf
500    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
501    
502    checkpoint58y_post
503    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
504      vertical diffusivity, similar to that in MOM4; turned on using
505      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
506      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
507    o Added capability for 3D specification of background vertical diffusion
508      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
509      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
510      "data" file that contains the 3D vertical diffusivity coefficients.
511    o ice dynamics (pkg/seaice) with thsice thermodynamics:
512      - add code within pkg thsice to advect & diffuse sea-ice fields
513      similar to (and will replace) what has been added in  seaice_advdiff.F,
514      but: - conserving Mass, Heat & Salt.
515           - better when using non-linear advection scheme (not yet fully tested)
516           - can also be used in atmospheric set-up (for now, only the diffusion).
517    
518    checkpoint58x_post
519    o IO option for global-file compact format:
520      - add options when generating topology (utils/exch2/matlab-topology-generator)
521      - add I/O capability (pkg/mdsio).
522      - adapt utils/matlab/rdmds.m to read this format.
523      for now long-line format not yet supported by pkg/mdsio (& exch2).
524    o shelfice: add a few diagnostics
525    
526    checkpoint58w_post
527    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
528      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
529      (and replace horiVertRatio in NH code).
530      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
531                         and tutorial_plume_on_slope (sensitive to truncation)
532    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
533      directly to drive seaice model (C-grid only)
534    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
535     - reintroduce computation of wind from stress,
536     - compute tau (in exf_bulkformulae.F) from windstress averaged to
537       mass points to avoid tau = 0
538     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
539    o rdmnc.m: make it work with "global" files created with gluemnc
540    o rdmnc.m : some improvements in dealing with singleton dimension
541      (tested on all testreport mnc output files).
542    o genmake2: disable pkg/profiles if netcdf test fails.
543    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
544    o move call to cal_readparms up to make calendar parameters/variable available
545      to all packages
546    
547    checkpoint58v_post
548    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
549      useDynP_inEos_Zc tested.
550    o pkg/exf: changes to properly interpolate/mask/scale initial fields
551    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
552      and portions thereof.  See read_cs.txt for description and examples.
553    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
554      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
555      following the great-circle arc between those 2 points.
556    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
557      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
558    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
559     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
560     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
561     - still needs work (not working with some options ; efficiency to improve)
562       and serious testing.
563     - use this scheme for temperature & salinity in 2 advection test exp.:
564       advect_xy & advect_xz, respectively.
565    
566    checkpoint58u_post
567    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
568    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
569    o testreport: add option "-skipdir" to skip some test.
570    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
571      momentum calculation.
572    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
573    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
574      remove checkpoint.F and the_correction_step.F (no longer used);
575      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
576    o add option (linFSConserveTr) to correct for tracer source/sink due to
577      Linear Free surface
578    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
579    o pkg/thsice: fix reading mnc-pickups
580    
581    checkpoint58t_post
582    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
583    o pkg/mdsio:
584     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
585       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
586       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
587     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
588     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
589       either MDS_READ_FIELD or MDS_WRITE_FIELD )
590     - new S/R (to replace MDSWRITEMETA), which allows to write more
591       informations (variable names, time ...) to meta files.
592     - modify rdmds.m to give back the meta file content.
593    o pkg/diagnostics: change vertical interpolation to be safer, and more
594       flexible (define p-levels to interpolate to in data.diagnostics);
595      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
596       diagnostic pointer.
597    o pkg/seaice: more cleaning up of seaice_growth, added many comments
598    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
599    o fix multi-category seaice:
600     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
601       SEAICE_MULTICATEGORY
602     - fix short wave heat flux
603    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
604       and allow to use EVP solver. Change forward lab_sea: test both EVP
605       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
606    o Initial check-in of lab_sea adjoint
607      (very similar to natl_box_adjoint/code_seaice)
608      * used C-grid and EVP solver
609      * used KPP, GM/Redi
610      * uses inAdExact=.TRUE.
611      * gradient checks fail for both ADM and TLM
612        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
613        f.d. gradients actually seem more problematic than ADM, TLM gradients;
614        issue is related to forward mismatch between g77 an ifort
615    o pkg/seaice: overhaul of thermodynamics
616     - growth.F and groatb.F are replaced by new routine seaice_growth.F
617     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
618     - move a few global fields out of SEAICE.h into seaice_growth.F and
619       make them 2D (FICE/QNETO/ ...)
620     - remove FO (it is the same as QNETO)
621     - introduce a few local fields to avoid modifying external fields such
622       as atemp, etc.
623    
624    checkpoint58s_post
625    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
626      changed exf_set_gen.F so that
627        genperiod=0 means input file is one time-constant field and
628        genperiod=-12 means input file contains 12 monthly means
629    o CG2D: use pre-computed solver main-diagonal (stored in common block);
630      this affects truncation error ; generate new output file for exp. which
631      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
632        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
633        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
634        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
635        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
636        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
637    o start implementation of deep-atmosphere and anelastic formulation
638    o verification: remove 2nd copy of input files and use script "prepare_run"
639      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
640    o mom_common/vecinv/fluxform: fix a few initialisation isssues
641    o profiles: fix for multithreaded case
642    
643    o diagnostics: rename few diags:
644      s/'PRESSURE'/'RCENTER '/g
645      s/'TICE    '/'oceFreez'/g
646      s/'TAUX    '/'oceTAUX '/g
647      s/'TAUY    '/'oceTAUY '/g
648      s/'SWFLUX  '/'oceQsw  '/g
649      s/DIFx/DFxE/g
650      s/DIFy/DFyE/g
651      and add few ocean-forcing diagnostics:
652      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
653    o modifications to pkg/seaice/growth.F and budget.F, which change results of
654      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
655      as actual snow thickness.  It now refers everywhere to effective snow
656      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
657    
658    checkpoint58r_post
659    o modifications to pkg/seaice/growth.F, which change results of
660      lab_sea experiment: fixes pertain to melting snow over open water, to
661      masking EVAP under sea ice, and to using the correct AREA variable for
662      computations of EVAP, PRECIP, HSNOW, and GHEFF
663    o add ability to read bathy, salt, and theta using MNC (off by def)
664    o add flooding algorithm and advection of HSNOW for pkg/seaice;
665      both are turned off by default and do no change any results
666    o seaice advection with pkg/thsice: a step toward the use of non-linear
667      advection scheme, but #ifdef or commented out for now (requires more EXCH).
668    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
669      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
670      in natl_box (affects results @ truncation level: update output.txt)
671    o multi-threading and IO:
672      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
673      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
674        (needed to work with SingleCpuIO): tested in all verif. exp.
675    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
676      affects the results (but none of the verification test uses this scheme).
677    o Adding some pkg/diagnostics capability to pkg/seaice
678      (will certainly be subject to changes)
679    o ctrl: adding new control variables:
680      lwflux, lwdown, evap, snowprecip, apressure, runoff
681    
682    checkpoint58q_post
683    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
684      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
685      high_res_cube configuration by 4% on Columbia.
686    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
687      add (in global_with_exf/code) a version of EXF_INTERP_READ without
688      dynamical allocation (seems to work in multi-threaded).
689    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
690      single CPU io) so that TAF does not have to see EESUPPORT.h
691    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
692    
693    checkpoint58p_post
694    o obcs: stop if obcs is used with useCDscheme = .true.
695    o shelfice:
696     - fix a sign error so that no slip at shelfice interface works
697     - remove stop for combination non-hydrostatic code and shelfice. That does
698       not mean, that the results are correct, but at least they are numerically
699       stable
700    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
701    o added adjoint exch routined for all exch*3d* routines
702      and updated flow directives
703    
704    checkpoint58o_post
705    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
706      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
707    o change controling S/R for writing pickup file (new S/R do_write_pickup)
708      and clean-up reading/writing of pickup files.
709    o fix local version of read/write pickup (NH part) in rotating_tank/code
710    o simplify EXCH interface:
711     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
712     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
713    o added the regrid package
714    o shelfice:
715     - add a simple boundary layer scheme to reduce noise
716     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
717    
718    checkpoint58n_post
719    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
720       local variable (not in common block).
721    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
722      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
723      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
724        to work with SingleCpuIO.
725    o add "_d 0" to real constant of pkg/cfc subroutines ;
726       update exp. cfc_exemple & tutorial_cfc_offline output files.
727    o multi-threading and IO:
728      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
729        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
730      - barrier before and after reading.
731      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
732      - avoid using MDS_WRITELOCAL for LAND pkg output.
733      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
734        common-block variables ; Allows multi-threading with master-thread IO.
735    o change default MAX_NO_THREADS from 32 to 4 ;
736      and stop cleanly when MAX_NO_THREADS is too small.
737    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
738    
739    checkpoint58m_post
740    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
741       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
742    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
743       keep global_ocean.90x40x15 (for AD testing) with former secondary test
744       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
745    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
746        add MITgcm_tutorials (= code + all the tutorials)
747    o ecco, option to compute cost for total ssh (mean+anom)
748    o consistent with addition of ptracer and ssh in pkg/profiles
749    o profiles: adding ptracer and ssh
750    o testreport: change multi-test output-file name
751      (from output.txt.{name} to output.{name}.txt)
752    o profiles: now ok for mutli-tiles case
753    o seaice: add 4 parameters for different advection schemes for area,
754      (effective) seaice thickness, enthalphy, and snow height. Their default
755      is the standard parameter SEAICEadvScheme
756    o calc_gw:
757     - add cosFacU in zonal viscous flux (harmonic.visc.).
758     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
759       of tutorial_plume_on_slope.
760    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
761    o calc_gw: true flux-form, account for horizontal grid spacing.
762      update rotating_tank results, but not plume_on_slope (affected at
763      truncation level, 11 digits).
764    
765    checkpoint58l_post
766    o calc_gw:
767     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
768     - remove side-drag for now (need to fix it); update plume_on_slope results.
769     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
770    o commit code to make SST/SSS weights spatially variable
771      (based on either variable in-situ or variable initial T/S weights)
772    o pkg/ecco:
773      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
774        now based on horizontally varying weights wthetaLev, wsaltLev
775      * cost_averagesflags now returns year indices in addition to day, month
776      * sflux balance is performed on annual basis
777        (sflxumm, sfluxmm2, bal_sfluxmm)
778      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
779        including separate counting and multipliers
780    o pkg/rbcs
781      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
782    
783    checkpoint58k_post
784    o testreport:
785     - always build in dir. "build" (if not there, mkdir build instead of building
786       & running in input)
787     - run in dir run (if it exists), in build otherwise.
788     - call prepare_run (if input/prepare_run exists)
789     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
790    o pkg/exf modifications to interpolation and rotation routines for more
791       reasonable treatment of North Pole singularity: for tracers North Pole
792       value is set to northernmost zonal-mean value, for zonal velocity it is
793       set to zero, and for meridional velocity it is set to northernmost value.
794    o pkg/exf/exf_check_range.F
795     - add tile index to diagnostics and move stop statement to the very
796       end of the routine.
797    o pkg/diagnostics: (diagnostics_main_init.F)
798      define title of isomorphic variables according to the current config.
799    o pkg/thsice with pkg/seaice dynamics:
800    - fix domain of computation (interior only, required for exf) and do exchanges
801    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
802    o towards a standard way of dealing with multi-threading in MONITOR
803      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
804    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
805       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
806    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
807    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
808    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
809       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
810    o tracer advection:
811     - clean-up and simplify calc_common_factors.F
812     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
813       advection subroutine (but still not used within DST advection S/R)
814    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
815    
816    checkpoint58j_post
817    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
818      from file (collects calls previously in FORWARD_STEP)
819    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
820    o adjoint store dir. adjusted accordingly
821    o genmake2
822      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
823    
824    checkpoint58i_post
825    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
826      on wind stress (SEAICEstressFactor defaults to 1.)
827    o Total number of Timers is finite (<=40): comment out 2 non-essential one
828      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
829    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
830      on CS-grid: no longer loosing mass.
831    o exf & curvilinear-grid: no longer modify longitude xC & xG.
832    o pkg/ggl90: fix sloppy output and fix a bug
833    o pkg/seaice: added SEAICEuseEVPpickup parameter
834      - Set to false in order to start EVP solver with
835        non-EVP pickup files when using SEAICEuseEVP
836      - fix sign error in diffusion in seaice_calc_rhs
837    
838    checkpoint58h_post
839    * Modifications for bottom topography control
840      o replace hFacC by _hFacC at various places
841      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
842      o add non-self-adjoint cg2d_nsa
843      o update autodiff support routines
844      o re-initialise hfac after ctrl_depth_ini
845      o works for 5x5 box, doesnt work for global_ocean.90x40x15
846    * Adding verification for 5x5 box (4-layer) bottom topography control
847    
848    checkpoint58g_post
849    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
850       used for mean seasonal cycle, mean diurnal cycle); add an example
851       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
852    o pkg/ggl90:
853      - add parameter (minimum surface kinetic energy)
854      - fix bug (avoiding division by zero)
855    o couple pkg/thsice to pkg/seaice:
856      - modify advection in seaice to accomodate new scalar fields to be advected
857      - only muliDimAdection scheme work with seaice/thsice
858      - mapping of thsice-variables to seaice-variables, back and forth
859      - does not break the verification experiments, but does not give the
860        desired results either
861    o pkg/seaice
862      - make (default) second order advection a bit less confusing?
863    
864    checkpoint58f_post
865    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
866      to pkg/seaice):
867      - new routines thsice_map_exf and thsice_get_exf provide the interface
868      - add an additional formal parameter to thsice_solve4temp
869    o pkg/exf:
870      - add new fields wspeed, snowprecip (to be able to couple to thsice)
871      - correct Stefan-Boltzmann constant
872      - new parameter for longwave surface emittance
873      - separate some stuff from exf_bulkformulae into new routines  
874        exf_radiation, exf_wind
875      - add new parameters and constants: longwave emissivity for ocean, ice
876        and snow, evaporation parameters over ice
877      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
878        either wind from stress or stress from wind
879    o pkg/thSIce:
880    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
881    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
882       and THSICE_CALC_THICKN
883    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
884    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
885      to make debugging easier.
886    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
887    o pkg/bulk_force:
888      - clean-up comments and parameters ;
889      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
890    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
891      generate new output for test-experiment: aim.5l_cs.thSI
892    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
893      testreport accordingly
894    
895    checkpoint58e_post
896    o SEAICE_CGRID adjoint done
897    o R_STAR adjoint implemented.
898      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
899      * need to sort out init. of h0facc, etc.
900    o Make pkg/profile fully independent of ecco,cost, etc. stuff
901      to be able to use it in pure forward.
902    
903    checkpoint58d_post
904    o upgrade simple test-experiment to tutorial example:
905     step.1: duplicate the experiment and (step.2) will remove the old copy.
906      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
907      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
908      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
909      tutorial_global_oce_biogeo    <- copy of dic_example
910      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
911      tutorial_plume_on_slope       <- copy of plume_on_slope
912      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
913      tutorial_global_oce_optim     <- empty for now (David ?)
914      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
915     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
916    o correct a sign problem in cost_scat.F
917    o obcs and ptracers: fix boundary conditions for advections schemes
918      with larger stencil
919    o thsice adjoint: start
920    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
921      completeness
922    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
923      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
924    o ptracers adjoint:
925      * avoid extensive recomputatations
926      * fix missing re-init. of gptr (missed by TAF)
927    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
928      me to turn off the excessive output to STDOUT that this package produces
929    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
930      and add those terms in Vector-Invariant formulation.
931    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
932      if the control period (xx_hfluxperiod etc) is 0
933    o in profiles pkg, clean routines and fix details
934    o in ecco pkg, reading ssh data:
935      fix problem in case the model does not start at iter0=0
936    o fix mnc-pickup/restart for ptracers
937    o new package prifiles:
938      code to compute profile-based cost by Gael Forget
939      (modifs in ecco, ctrl, autodiff)
940    o Benign bug fix in initialization (spotted by M. Mazloff) of
941      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
942    
943    checkpoint58c_post
944    o adjoint: finish NLFS adjoint and provide reference output in
945      verification/global_ocean.90x40x15/results_ad_nlfs
946    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
947      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
948      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
949      with SEAICE_CGRID defined.
950    o move calendarDumps from "data" to "data.cal" and clean-up the code
951      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
952    o add useEXF & useCAL flags (for now, set in hard-coded way)
953    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
954      (were missing in NH mode, and wrong in quasihydrostatic mode).
955      waiting for Chris updated version of calc_gw to add those CALLs.
956    o fix bug in quasihydrostatic S/R ;
957      add a test for this option: global_ocean.90x40x15.qshyd
958    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
959      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
960    o add on/off flag useOffLine for package OFFLINE
961    o seaice:
962      - modify advection so that it works also on the C-grid
963      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
964        problem in multi-tile runs with C-grid
965      - add flags for clipping ice velocities and/or masking solver forcing
966      - fix drag (ocean on ice) formulation and a bug that caused noise in the
967        C-grid solver
968      - added a few comments to seaice_diffusion.F
969      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
970        are now exclusive)
971      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
972        required re-ordering the code a little:
973       + make DAIRN global variable (defined in SEAICE)
974       + move computation of the viscosities eta and zeta into a new separate
975         routine (because I need to recompute them in seaice_ocean_stress.F)
976    
977    checkpoint58b_post
978    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
979      update output.txt of exp. aim.5l_cs.thSI
980    o various mnc cleanups and improvements:
981      + shrink lookup tables by factor of ~4
982      + better error reporting when running out of lookup space
983      + able to handle longer path/file names (up to 500 chars)
984    o adjoint:
985      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
986      - TBD: "hidden" mom_vecinv recomp. in dynamics
987    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
988     (allow to differentiate between forcing components using new integer flags:
989      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
990     and add new flag to put Dissipation tendency out of Adams-Bashforth.
991    o ecco
992      - enable trend removal from SSH anomaly obs.
993    o adjoint
994      - a fix for PmEpR when #undef EXACT_CONSERV
995      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
996      - try to fix "hidden" recomp. in forward_step for NLFS
997        (NLFS seems broken sometimes after I checked it in)
998    o seaice:
999     - add c-grid version of the dynamic solver:
1000       + three new routines that are the c-grid substitute lsr, dynsolver
1001         and ostres
1002       + put a few fields that were local to dynsolver into global common
1003         blocks, so that I can move the computation of stresses etc into
1004         seaice_lsr (saves coding but may break the adjoint).
1005     - replace more hardwired parameters by runtime parameters
1006     - add ice masks that mask the rhs of the implicit solvers where there
1007       is no ice (commented out in seaice_dynsolver, because i am not sure
1008       if this works properly), eventually this should replace the clipping
1009       of ice velocities in seaice_dynsolver to +/-40cm/s.
1010    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
1011      include it only where its needed
1012    o move balancing of fluxes before the call of external_forcing_surf
1013    o seaice:
1014      - correct units of turning angles (now they are really in degrees)
1015      - move computation of GWATX/Y out of main routine into dynsolver
1016      - initialize GWATX/Y in seaice_init
1017    o Apply mask on Fresh-Water flux (needed for SSH forcing).
1018      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
1019    o seaice: add runtime flags for turning angles (default to zero)
1020    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
1021      and trend from exf forcing and ctrl control adjustments
1022    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
1023      (since checkpoint57x_post)
1024    o change the default rotation period to 86164.s = the Earth rotation
1025    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
1026      and based on a reference stratification. Tested within hs94.cs-32x32x5.
1027    o seaice advection: add code for choosing between the default (2nd order
1028      central differences) and multiDim advection schemes provided by
1029      pkg/generic_advdiff
1030    o seaice:
1031      - removed all references to SEAICE_GRID.h fields from
1032        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
1033        (cubed-sphere configuration will change a little)
1034      - grid computations in seaice_init are obsolete now.
1035      - cleaned up code a little so that is easier to read (hopefully).
1036      - added new (better?) discretizations of default advection and diffusion
1037        (turn on with SEAICEuseFluxForm)
1038      - replace 1 in 3d global fields by kSurface in growth.F
1039      
1040    checkpoint58a_post
1041    o seaice:
1042      - bug fix in advect.F
1043    o shelfice:
1044      - separate shelfice load anomaly from pload (breaks with time
1045        dependent forcing), => introduce constant field shelficeLoadAnomaly.
1046        Its default is 0., but it may be computed more cleverly from (unknown)
1047        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
1048        done offline. A good approximation of the pressure load anomaly is
1049        necessary to avoid large initial adjustment processes underneath
1050        deep-reaching shelfice.
1051      - small fix in ISOMIP shelfice_thermodynamics
1052      - add more sophisticated thermodynamics of Hellmer (1989), this is
1053        now the default
1054      - give a few constants more intuitive names
1055    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
1056      if bulk formulae are used in long integration (especially EmPmR). Turn
1057      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
1058      if balancePrintMean, the imbalance that is substracted is printed to
1059      STDOUT.
1060    o fix bug (typo) in obcs_apply_eta.F
1061    o add a new package shelfice which enables us to model the circulation
1062      underneath shelf-ice with draughts of hundreds of meters.
1063     - works
1064     - to do: + include improved thermodynamics
1065              + check whether kSurfC (from model/inc/SURFACE.h) can be used
1066                instead of new field kTopC
1067              + can we use topoFile, Ro_surf and existing code in ini_depth.F
1068                instead of new field R_shelfIce and new code in ini_depth.F
1069                and ini_mask_etc.F?
1070              + adjust vertical mixing schemes?
1071    o seaice pkg:
1072     - add a cpp-flag to include a simple formula for a salinity dependent
1073       freezing point of sea water at the surface
1074     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
1075       meridional stresses are now different (and hopefully correct)
1076    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
1077       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
1078       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
1079    o pkg/diagnostics: add options and parameters for regional-statistics
1080       diagnostics ; define regions by reading a region-mask from a file
1081       (might add other options later)
1082    o pkg/bulk_force:
1083     - add option and parameters to use AIM surface-flux formulae.
1084     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
1085       others forcing fields (defined in PARM05, parameter file "data") are loaded
1086       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
1087     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
1088     - use the right EXCH call for uwind,vwind (to work on CS-grid).
1089     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
1090       and parameters (note: calcWindStress replaces .NOT.readwindstress).
1091     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
1092    
1093    checkpoint58
1094    o add "--embed-source" option to genmake2 which, when the supporting
1095      tools can be compiled (as determined by genmake2) will turn on the
1096      embed_files package which then embeds the entire MITgcm source code
1097      (*.[fFhc] + Makefile) used for the build within the executable
1098      - requested by CNH but off by default
1099      - adds a paltry <9MB to the mitgcmuv executable in most cases
1100      - only writes the output when useEMBEDSRC in eedata is true
1101    o clean up 3-dim. relaxation codes:
1102      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
1103      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
1104      * Thanks to Tom Haine for testing!
1105    
1106    checkpoint57z_post
1107    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
1108      affects output (@ truncation level) of exp. plume_on_slope ; updated.
1109    o fix the pickup behavior for obcs in combination with ptracers
1110    o fix a bug in ptracers_external_fields_load
1111    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
1112      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
1113    o transfered surface NH pressure to eta field (if exactConserv).
1114    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
1115         and update lab_sea output.txt file.
1116    o completing 3-dim. relaxation code: additional term
1117         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
1118      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
1119      * At compile time, in "EXF_OPTIONS.h" set
1120          #define  ALLOW_CLIMTEMP_RELAXATION
1121          #define  ALLOW_CLIMSALT_RELAXATION
1122      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
1123          tauThetaClimRelax3Dim = 15552000.0,
1124          tauSaltClimRelax3Dim  = 15552000.0,
1125      * 3 cases:
1126          1) Use a constant-in-time 3-dim. field
1127          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
1128          3) Real-time relax. to time-evolving prescribed field
1129    o Adding Laplacian-type smoothness constraint on
1130      initial and boundary (forcing) controls (ic, bc)
1131      * enable at compile-time via
1132        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
1133      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
1134      * Absolute scale somewhat unclear so far
1135      * no area weighting was included since no other cost term does so far
1136    
1137    checkpoint57y_post
1138    First step for a NLFS adjoint
1139    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
1140    o new init. routines for calc_r_star, calc_surf_dr
1141    o still need to deal with ini_masks_etc
1142    o testreport seemed happy
1143    checkpoint57y_pre
1144    
1145    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
1146    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
1147    o add new offset feature to offline pkg (plus minor cleanup)
1148    o cfc fixes for final year of integration
1149    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
1150      be in GCHEM_OPTIONS).
1151    
1152    checkpoint57x_post
1153    o fix testreport Pb in multiple test experiment.
1154    o cleanup our namelist syntax in verification:
1155      - make it more F95 standards compliant (some work still needed)
1156      - allows the vast majority of our tests to work with gfortran
1157    o Non-Hydrostatic:
1158     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
1159     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
1160    o Allow to apply AB on T,S rather than on AB(gT,gS):
1161     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
1162     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
1163       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
1164     - need a "clever" read_pickup to restart from the other AB formulation
1165    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
1166    o remove some unused variables (reduces number of compiler warnings)
1167    o adjoint
1168      * Disable useVariableViscosity for adjoint for time being
1169        (there are a number of extensive recomputations)
1170      * Initialize certain variables needed for adjoint
1171    
1172    checkpoint57w_post
1173    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
1174                 fix the singleCpuIO RS version of MDSWRITEFIELD
1175       and add a WARNING if using globalFiles=T with multi-processors.
1176    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
1177      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
1178    o tracer advection scheme:
1179      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
1180       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
1181       was not very convenient).
1182      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
1183       (further tests needed for the implicit DST & Flux-Limiter schemes).
1184    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
1185      and sRef for convenience, handy, when you want to initialize
1186      ptracers in a large domain with a constant non-zero value. Also,
1187      untangle ptracers_init.F a little.
1188    
1189    checkpoint57v_post
1190    o change dome exp. to use variable viscosity in side-drag terms.
1191    o remove all the files from the cfc_offline test since they are now
1192      incorporated into tutorial_cfc_offline which has been producing
1193      identical results for a few days of testing
1194    o add new parameter: sideDragFactor to enable half-slip-side BC
1195      and change side-drag S/R to use viscosity from mom_calc_visc
1196      (can switch back by setting sideDragFactor=0.); affects results at
1197      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
1198       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
1199    o vorticity & strain are now computed without masking, to account for
1200      no-slip-side BC in variable viscosity calculation ; mask is applied
1201      anyway later on, before computing advection/coriolis terms.
1202    o modify exp4 to test new obcs support for reading from external files
1203      and for passive tracers
1204    o fix behavior of ptracers_monitor when monitor output is written to a
1205      netcdf-file; still not independent of monitor.F (writes in the same
1206      file).
1207    o change default value of tRef (put a uniform, meaningful value for ocean
1208      & atmos) and initialize sRef (was missing, as Martin mentioned).
1209    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
1210      to be proportional to enstrophy dissipation length.  Thus,
1211       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
1212      This is now consistent with Smagorinsky and with the manual.
1213    
1214    checkpoint57u_post
1215    o OBCS and PTRACERS: add open boundary support for passive tracers
1216      - either use homogenous (pseudo) v.Neumann conditions or prescribe
1217        OB-values from file; this is not different from the way theta and salinity
1218        are treated
1219      - however, Orlanski-radiation conditions are not supported, and the model
1220        will stop if you use pTracers and Orlanski at the same time.
1221      - beefed up the rountine obcs_external_fields_load: now only those open
1222        boundary values are overwritten with values from files for which there
1223        are really files, otherwise the OB-fields remain untouched. This makes
1224        it possible to use different OBs at different ends of the domain (as
1225        with EXF)
1226    o reduce number of exch calls in shap_filt (s2).
1227    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
1228      truncation level) 4/5 MLAdjust test results (11&12 digits match).
1229    
1230    checkpoint57t_post
1231    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
1232    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
1233      same truncation, independent of the face number: affects affects several
1234      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
1235    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
1236      note that biharmonic viscosity + no-slip was not tested in any experiment.
1237    o fix bug in non-linear free-surf side-drag ; generate new output for
1238      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
1239    o make mnc honor the writeBinaryPrec flag for most kinds of output
1240    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
1241    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
1242      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
1243    o add brackets in multi-terms sum to get same truncation, independent of
1244      the face number (manage to get exactly same value of gU,gV at the cs-edge)
1245      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
1246    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
1247      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
1248      a maximum grid-scale Reynolds number.  Also, changes all length calculations
1249      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
1250      Suggested values of viscosity parameters found in mom_calc_visc.
1251      Many new viscosity diagnostics available.
1252    
1253    checkpoint57s_post
1254    o Add clearing-house for viscosity calculations, mom_calc_visc and
1255      correct numerous bugs in LeithD and Smagorinsky discretizations.  
1256      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
1257      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
1258      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
1259      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
1260      The Strain-Tension form is now called with useStrainTensonVisc=.true.
1261      ViscAhStrain and viscAhTension are now retired.
1262    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
1263    o In response to JMC's bug report, genmake2 now ignores any soft-links
1264      that it finds in the *current* directory when searching for files.
1265      Soft-links found in any other source directories will still work as
1266      they did before.
1267    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
1268      a C routine to unlimit the stack size
1269    o mnc-ify pkg/aim snapshot vars
1270    o mnc-ify pkg/land as requested by Daniel
1271    o various changes to mnc including:
1272      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
1273      - output can now be grouped so that all files within a group
1274          change the ITER portion of their names in lock-step together
1275      - can now read ("global") PER-FACE (in addition to PER-TILE) files
1276          and works with both EXCH1 and EXCH2 (but needs more testing)
1277      - writing works for all verification test cases w/ g77 on Linux
1278    
1279    checkpoint57r_post
1280    o make MNC variable initialization happen earlier
1281    o add diagnostics for (almost) each term of the momentum Eq.
1282    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
1283    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
1284    o remove MINIMAL_TAVE_OUTPUT option ;
1285      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
1286    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
1287      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
1288    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
1289    o add time-dependent SST, SSS control
1290    o cost terms in ecco/ modularized (new cost_generic.F)
1291    o cost_averages routines are modularized (new cost_averagesgeneric.F)
1292    o new infrastructure for seaice model vs. obs misfits in seaice/
1293      * driver from the_main_loop.F is seaice_cost_driver.F
1294      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
1295      * gradient check in Exp. 6a of natl_box_adjoint/
1296    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
1297      (see README file)
1298    
1299    checkpoint57q_post
1300    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
1301    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
1302      - bug was reported by Jean-Michel and Ian Fenty
1303    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
1304      update exp. cpl_aim+ocn output.
1305    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
1306      Needed for high-res. runs with large global files
1307      to be able to limit tapelev size
1308    o Changed some tests for adjoint:
1309      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
1310      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
1311      * global_ocean.90x40x15/ back to default 3-level checkpointing
1312    o Modifications to enable scripted COMMON to MODULE conversion
1313      * verification/OpenAD/code/ has necessary scripts and description;
1314      * converts, compiles and runs successfully;
1315    
1316    checkpoint57p_post
1317    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
1318    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
1319      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
1320    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
1321    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
1322      (was already the case for dissipation with mom_vecinv,
1323       and also the case for grad.PhiHyd when staggered-timeStep)
1324      This will allow to put dissipation out-off the AB time-stepping.
1325     Unfortunately, affects truncation error. Update output of exp. that "fails"
1326      (cg2d matching number) and leave the others for later: front_relax(10),
1327      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
1328      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
1329    
1330    checkpoint57o_post
1331    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
1332      (2) its ready to be documented during the 20050801 DocFest
1333    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
1334      for ideal_2D_oce and lab_sea on linux_ia32_g77
1335    o set to #undef CTRL_SET_OLD_MAXCVARS_30
1336      in global1x1_tot/code_seaice_adj to access indices 32, 33
1337      (worth another tag)
1338    
1339    checkpoint57n_post
1340    o adding precip control xx_precip 32
1341    o adding swflux control xx_swflux 33
1342    o Replacing 10 forcing penalty cost routines by 1 generic.
1343    o Implementing partitioning in time-mean and variable adjustment
1344      for atmos. state.
1345    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
1346    o in natl_box_adjoint:
1347      * updated exp 1 to 10
1348        (but does not have time-mean vs. variable split results yet)
1349    o updated global1x1/*_seaice_adj/
1350      to incorporate latest changes
1351    o enable useSingleCpuIO for mdsio vector routines
1352      (applies in particular to tapelev I/O)
1353    o removed inefficient K-loop in all active_file*control*.F
1354    
1355    checkpoint57m_post
1356    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
1357      and advect_cs (use EXCH-2 and standard cs-32 grid files).
1358    o pkg/exch2: filling of face-corner halo regions is optional
1359      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
1360    
1361    checkpoint57l_post
1362     tag before updating tutorials (pre-release-2)
1363    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
1364       for output and interpolation of input fields onto model grid)
1365    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
1366       Affects results of exp. rotating_tank ; update output.txt.
1367    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
1368          and taking the square quantity and/or using a fraction-weight field.
1369    o fix aim_diagnostics_init.F mate numbers.
1370    o add mnc output capability to diagnostics/diagstat and update
1371      our cvsignore files for the ACSII output generated
1372    
1373    checkpoint57k_post
1374    o lab_sea now uses diagnostics package and provides a suite of
1375      new EXF diagnostics output.
1376    
1377    checkpoint57j_post
1378    o exf
1379      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
1380        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
1381        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
1382      * extended diagnostics output
1383        - now includes all EXF variables
1384        - hs, hl moved to common block
1385        - separate S/R for diagnostics, called after ctrl vector is added
1386        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
1387        - EXFqnet contains true Qnet (i.e. includes qsw)
1388      * updated verif. lab_sea, global_with_exf
1389      * Rearranging hflux (exf_mapfields -> exf_getforcing)
1390        to ensure that diagnostics sees a true EXFqnet
1391    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
1392    o diagnostics pkg: change pointers so that 1 diagnostic can be used
1393      several times with different frequencies.
1394    o mnc-ify the thsice package as requested by Daniel Enderton
1395      - the monitor--MNC output needs work
1396      - many attributes need to be added (most are currently blank)
1397    o mnc-ify theaim_v23 package as requested by Daniel Enderton
1398      - many attributes need to be added (most are currently blank)
1399    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
1400    o add Sadourny like discretization to the 4th.O vorticity advection scheme
1401    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
1402      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
1403         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
1404    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
1405     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
1406    
1407    checkpoint57i_post
1408    o Diagnostics package was changed: diagnostic allocation is now deactivated
1409      by setting an empty file name in the namelist (used to be by setting 0 frequency)
1410    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
1411      add 1rst Order upwind vertical Shear.
1412    o add a quick fix for A/B checkpointing in OFFLINE mode
1413    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
1414      end-run around the C/Fortran linking horror in eesup/src/timers.F
1415    o added pkg/runclock: allows user to terminate run based on wall clock
1416    o added non-hydrostatic scaling parameter: nh_am2
1417    o pkg/my82: futile attempt to make results compiler-independent by adding
1418      some "_d 0", etc. no effect.
1419    o for mnc output, fill the 'T' coordinate var with myTime and create a
1420      separate 'iter' variable for iteration count
1421    o pkg/diagnostics:
1422      add new capability: output of Global/Regional & per-level statistics ;
1423      tested against monitor output (including land & thSIce) on various exp.
1424    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
1425    
1426    checkpoint57h_done
1427      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
1428      data.diagnostics, data.gchem, data.ptracers) is done.
1429    
1430    o pkg/diagnostics: prepare for Global/Regional statistics.
1431      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
1432    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
1433      and rename it: DIFFERENT_MULTIPLE
1434    
1435    checkpoint57h_post
1436    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
1437    o pkg/diagnostics: change output frequency, now in seconds (instead
1438      of Nb of iterations). This requires to change data.diagnostics.
1439    checkpoint57h_pre
1440    
1441    o in mnc, let the user create the output dir if both mnc_outdir_date
1442      and mnc_outdir_num are false
1443    o add fflags() to pkg/diagnostics which allows one to specify, on a
1444      per-file basis, the file precision [default behavior is unchanged]
1445    o added diagnostics to pkg/kpp, including computation of mixed layer
1446      depth based on a temperature/density criterion
1447    o updated verification/natl_box to test the new pkg/kpp diagnostics
1448    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
1449    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
1450    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
1451      not mnc -- this mistake was found by JMC and is now corrected
1452    
1453    checkpoint57g_post
1454    o add Adams-Bashforth 3rd Order time stepping:
1455      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
1456      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
1457    checkpoint57g_pre
1458    
1459    o make lambda[Theta,Salt]ClimRelax spatially varying
1460      (default remains spatially uniform constant based on tau)
1461    o added new control variables
1462      * init. uVel, vVel, etanN
1463      * lambda[Theta,Salt]ClimRelax
1464    o separate masks used for ctrl_pack/unpack 'from write_grid' output
1465      (suggested by G. Forget)
1466    
1467    checkpoint57f_post
1468    o add parameter "baseTime" = model base time = time at iteration zero
1469      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
1470      account for baseTime shift
1471    o move Coriolis arrays from PARAMS.h to GRID.h
1472    checkpoint57f_pre
1473    
1474    o mnc-ifying the seaice package
1475    o introduced an alternative length scale calculation for use in the limiting
1476      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
1477    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
1478    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
1479      as well as grad(vort3).  Made it compatible with both approximate form
1480      for the cubed sphere and full form of these gradients.  Added flag
1481      useFullLeith to select between approximate and full form.  
1482    o add "d0" in getcon.F to reduce differences between compilers/platforms
1483      update output.txt of exp. fizhi-gridalt-hs
1484    o change port_rand funtion to allow to set the seed.
1485    o fix obscure MNC bug involving conversion between reals and integers
1486      - it caused no problems with certain (eg. gcc, ifc) compilers but the
1487        new version is now more standards-compliant
1488    o adjoint-related modifications
1489      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
1490      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
1491      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
1492    
1493    checkpoint57e_post
1494    o Adding eddy stress controls a la Ferreira et al.
1495    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
1496    
1497    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
1498      update output.txt of exp. fizhi-gridalt-hs
1499    o add more "Z" dimensions and associated coordinate vars to MNC
1500    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
1501    o parameter calendarDumps: when set, approximate months (30-31 days) and years
1502      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
1503      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
1504      months and years.  Requires pkg/cal.
1505    o diagnostics: add pickup functionality
1506      - off by default for backwards compatibility
1507      - current version only uses MDSIO -- MNC will be added
1508    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
1509    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
1510    
1511    checkpoint57d_post
1512    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
1513    o modify verification/ideal_2D_oce so that it tests the creation of mnc
1514      output from the diagnostics package
1515    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
1516    o make genmake2 more portable by using ".$FS" instead of ".f" for more
1517      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
1518    o add coordinate variables to the MNC output from the diagnostics package
1519    o change MNC-flags default value: true when useMNC=TRUE
1520    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
1521      the ability (off by default) to read the grid information using MNC
1522    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
1523    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
1524    o do snap-shot diagnostics at the middle of the time-interval (instead of
1525      at the end).
1526    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
1527      new test for AIM with thSIce + slab-ocean
1528    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
1529    o move state variable diagnostics to the beginning of the time step ;
1530      (note: still needs some work specially for snap-shot diagnostics)
1531      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
1532    
1533    checkpoint57c_post
1534    o Change testing option (-ieee) to get closer agreement between g77 & ifort
1535    o generate new output.txt files on faulks with g77 & the new -ieee option
1536    checkpoint57c_pre
1537    
1538    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
1539      update output.txt of exp. global_ocean.90x40x15
1540    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
1541      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
1542    o add saltFlux(+File) forcing capability with periodicExternalForcing
1543    o allow to use pkg diagnostics for GM-Redi & ThSIce output
1544    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
1545    o improvements for the MNC output from DIAGNOSTICS:
1546      - correct handling of the unlimitied dimension
1547      - all dims now have associated coordinate variables
1548      - variables located at U, V, and Corner ("Z") points are now written
1549        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
1550        *all* data points are output
1551    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
1552    o added pkg/seaice/seaice_monitor.F
1553    o mdsio_readfield.F can now read files visible only to master MPI process.
1554    o pkg/seaice: some test code for ice-modified ocean stress
1555    o exf_getffields interpolation defaults to bilinear for all scalar forcing
1556      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
1557      spurious negative numbers for precipitation and humidity.  Will cause
1558      some small numerical differences for integrations using pkg/exf/exf_interp.F.
1559    o pkg/ctrl/
1560      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
1561        May be enabled via doPackDiag
1562      *  introduce z-scaling of
1563         + gradient (doZscalePack) and
1564         + control (doZscaleUnpack)
1565    o pkg/mdsio/
1566      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
1567      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
1568    
1569    checkpoint57b_post
1570    o simplify options in diagnostics_fill arguments (remove weird combinations)
1571    o fix MNC coordinate variables so that they now contain per-face index
1572      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
1573      general, EXCH2 grids are only aligned to a "local" coordinate system
1574    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
1575    o Implement instantaneous output within pkg diagnostics:
1576      setting a negative frequency in data.diagnostics produces
1577     "snap-shot" output (as opposed to time-average if freq > 0)
1578    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
1579      NOTE: change ptracer diagnostics name: use 2 characters to work with
1580            more than 9 tracers. Add also diagnostics of advect & diffus flux.
1581    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
1582      becomes the coordinate variable for the 'T' dimension
1583    o add CF-style coordinate variables to MNC
1584      - just a first cut:  numbers are meaningless on the cubesphere and
1585        missing along the T axis but otherwise it works!
1586    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
1587    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
1588    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
1589      this is based directly on what the model compute, so that the content of
1590      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
1591    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
1592    o clean up build options files for SunOS, in particular
1593      - remove -traditional from xmakedepend
1594      - change -xarch=v9 to -xarch=native for f77
1595      - restore use of make (not gmake)
1596      - add CC=gcc if using g77
1597    o changes per discussion of AM, JMC, & EH3 today:
1598      - move redundant "grid" variables out of "state" -- in preparation of
1599        creating proper CF-style coordinate variables and in recognition
1600        that any/all grid variables can be easily copied (eg. w/NCO) from
1601        the grid files into any of the other NetCDF files
1602      - *always* output grid variables with MDSIO (this will eventually be
1603        changed)
1604      - output MNC grid file if useMNC is true
1605    o every instance of _END_MASTER() has been found and replaced with
1606      _END_MASTER( myThid ) in order to satisfy certain picky Sun
1607      preprocessors
1608    o re-arrange diagnostics pkg initialisation:
1609     - allow each package to extend the available diagnostics list
1610     - add some checking and fix small problems (multi-threaded, ...)
1611     - new S/R diagnostics_fill (replace fill_diagnostics):
1612       look through the short list of active diag. (instead of the long list)
1613       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
1614    
1615    checkpoint57a_post
1616    o this set of changes restores TAMC compatibility
1617      tested for global_ocean.90x40x15 adjoint on trough
1618      (what a pain)
1619    
1620    checkpoint57a_pre
1621    o some modifs in tools/build_options for sunos
1622    o call ctrl_pack for ctrl at end for optimcycle=0
1623    
1624    checkpoint57
1625    o add horizontal bi-harmonic viscosity for vertical velocity
1626      - new parameter viscA4W (defaults to viscA4)
1627      - affects only non-hydrostatic code
1628      - to be done: no-slip lateral boundary conditions
1629    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
1630    o implement Implicit Vertical advection for pTracers
1631    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
1632      (implemented also for implicit vertical diffusion & advection)
1633    o OBCS: extend application of tracer open boundary conditions
1634      to a strip beyond the boundary of width Olx/Oly
1635    o add call monitor to TAF set of required calls (flow directives)
1636      and include in natl_box_adjoint
1637    o untangle a few ifdefs related to cost, ctrl, autodiff
1638      untangel a few ALLOW_ECCO_OPTIMIZATION
1639    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
1640      (theta2, salt2 in ecco_cost_weights)
1641    
1642    checkpoint56c_post
1643    o OBCS as control variables
1644      - update ctrl_ad_diff.list, obcs_ad_diff.list
1645      - remove balance of obcs controls from default
1646      - fix index bug nobcs in ctrl_init
1647      - fix dummy fields filen in ctrl_pack
1648      - add dummy weights for obcs
1649    o lsopt: comment out fort.94 output
1650    o optim:
1651      - remove unnecessary header files
1652      - adjusted namelists
1653      - add xerbla.F to Makefile
1654    o exf:
1655      - multiple modifications of exf_check_range
1656      - unit change in exf_init_runoff from [m/year] to [m/s]
1657    o mdsio:
1658      - i/o-vector change debugLevel from debLevA to debLevB
1659    
1660    checkpoint56b_post
1661    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
1662      is called from DO_THE_MODEL_IO
1663      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
1664      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
1665      - clean up PTRACERS_WRITE_TIMEAVE a little
1666    o add another verification experiment that tests both the cfc-pkg and
1667      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
1668      reactive tendencies treated inline with regular timestepping
1669    o testreport previously did a lousy job of comparing small numbers, so
1670      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
1671      implemented in the little c-progam tmp_cmpnum.c which is embedded in
1672      testreport.
1673    o ptracers_monitor: bug fix for MPI
1674    
1675    checkpoint56a_post
1676    o GCHEM: finish reorganizating the package
1677      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
1678        (introduces another 3D-array for each passive tracer, but only if
1679        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
1680        gchemTendency is not needed because the timestep is done separately)
1681      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
1682      - GCHEM is now---more or less cleanly---separate from PTRACERS
1683      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
1684        so clear to me how that should be done in a general way.
1685    o CFC: improve formatting of output in CFC_ATMOS
1686    o PTRACERS:
1687      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
1688        that ALL experiments with ptracers enable can be checked. This makes
1689        GCHEM_MONITOR obsolete.
1690      - include a runtime parameter PTRACERS_monitorFreq that defaults to
1691        monitorFreq
1692      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
1693    o add PTRACERS (PTR0[1-5]) to testreport output
1694    o exf_check_range:
1695      * default changed to .TRUE.
1696      * will check values for niter0 if debLevA, every timestep if debLevB
1697      * STOP in exf_check_range if 'out of range'
1698      * range chosen generous to allow for potential extema
1699      TBD: a version with stricter range
1700           permitted range would be runtime parameters
1701    o GMredi:
1702      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
1703      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
1704      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
1705    o GCHEM:
1706      - move call to GCHEM_FORCING_SEP, so that it is now called before
1707        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
1708      - introduced a useGCHEM runtime flag and applied it everywhere.
1709      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
1710        this flag is now only visible within GCHEM-pkg routines.
1711      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
1712        be replaced by a 3D array that is computed before thermodynamics; for
1713        this, the tracer ID iTracer had to be included into the parameter list
1714        of ptracers_forcing
1715      - set up forward_step to call gchem_forcing, that will replace
1716        gchem_forcing_int in ptracers_forcing
1717      - cleaning up
1718    o small cleaning of exch2: remove files that are also in eesupp/src
1719    
1720    checkpoint56
1721    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
1722    o mnc: cleanup "full" files--fixes out-of-memory problem
1723    o ECCO-GODAE
1724      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
1725      * fully merged and updated from SIO code
1726        windstress sign change affects
1727        - exf_inscal_[u/v]stress
1728        - sign of xx_tau[u/v] adjustments
1729        - signs in cost_scat
1730      * ctrl_get_gen: avoid update of tau[u/v] for first few days
1731      * natl_box_adjoint updated and compressed
1732      * 2-level checkpoint switch added
1733        (tested in EXP. 1 of natl_box_adjoint)
1734      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
1735    o SVD
1736      * first complete, non-hacked version for SVD calculations
1737      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
1738        performed via direct access files admtlm_vector.it????
1739        (via ctrl_[un]pack)
1740      * optimcycle is used for ARPACK iteration counter
1741        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
1742      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
1743        and add linear transforms where necessary
1744      * controls are initial/final SST, SSS (can be extended; need to check
1745        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
1746    o mdsio: filename info to both stderr, stdout
1747    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
1748      from sign change
1749    
1750    checkpoint55j_post
1751    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
1752      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1753    o add consistent build directories and .cvsignore files to verification
1754    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
1755    o make all subroutines 30 or less characters in length for certain older
1756      compilers to work (a thorough search only turns up two routines in
1757      pkg/ptracers)
1758    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
1759      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1760    
1761    checkpoint55i_post
1762    o change arrays for total vertical diffusivity (2.D if explicit,
1763      3.D if implicit) ; each ptracer uses its own background value.
1764    o added mnc/NetCDF output capability to ocn_compon_interf
1765      - added bits to verification/cpl_aim+ocn so that it can run on
1766        ITRDA and other clusters without the mpirun "-wd" option
1767    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
1768      configuration
1769    o give MNC the ability to create additional files rather than
1770      exceeding a specified file size limit "MNC_MAX_FILESIZE"
1771      - the default is just less than 2GB which is a practical limit
1772        on many systems
1773    o Compute the non-local term using either KPP vertical diffusivity (=default)
1774       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
1775    
1776    checkpoint55h_post
1777    o add verification test "vermix"
1778    o remove all the *_ioinc flags and replace with the single global
1779      outputTypesInclusive flag
1780    o allow to set a vertical profile of vertical diffusivity for T & S
1781    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
1782    o useMNC moved from data.mnc to data.pkg
1783    
1784    checkpoint55g_post
1785    o Renaming carbon AD experiments to comply with testreport conventions
1786    o Updating adjoint of Held-Suarez hs94.1x64x5
1787    o Fixing directives for non-ECCO forward_step, after ECCO directives
1788      have been fixed to avoid recomp. of do_oceanic_phys
1789      Works well for global_ocean.90x40x15,
1790      but recomp. issue remains for carbon
1791    o Updating adjoint output for natl_box_adjoint after
1792      pkg/ecco has been modified (see taga c55d_post)
1793    
1794    checkpoint55f_post
1795    o rename to timeave_init_fixed
1796    
1797    checkpoint55e_post
1798    o some delicate re-shuffle of store directives to avoid one
1799      extra call of do_oceanic_physics
1800      affects ecco_the_main_loop.F, do_oceanic_physics.F
1801      checkpoint_lev1_directives.h
1802    o NB: this may break global_ocean adjoint temporarily,
1803      but it is clear how to fix it. Will do later, need this now.
1804    
1805    checkpoint55d_post
1806    o ECCO specific cost function terms (up-to-date with 1x1 runs)
1807    o ecco_cost_weights is modified to 1x1 runs
1808    o modifs to allow observations to be read in as
1809      single file or yearly files
1810    o enable to read exf forcing fields as either
1811      single file or yearly files (flag useExfYearlyFields)
1812    checkpoint55d_pre
1813    
1814    o switch between 2-level and 3-level checkpointing
1815    o add ability of MNC to write local and "partial" (eg. 2D slices where
1816      the full 3D field is never actually stored) arrays to NetCDF files
1817      with the correct (that is, the complete multi-dimensional) set of
1818      array indicies
1819      - used in mom_vecinv() to write the diagFreq output
1820      - tested (demonstrated) in verification/aim.5l_cs
1821    o further mnc-ification
1822      - add verification/lab_sea to the list with mnc setups
1823      - fix undefined mnc v-names in cd_code
1824      - add kpp to mnc output (both snapshot and timeave)
1825    o non-hydrostatic code
1826      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
1827        in calc_gw.F
1828      - defaults to viscAh
1829      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
1830        friction or Leith) in non-hydrostatic mode, as long as there is
1831        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
1832    o pkg/cost
1833      extend simple cost functions to treat time mean quantities
1834      (T,U,V) via cost_accumulate_state from cost_tile
1835    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
1836        be 2 times larger than the minimum size the advection scheme requires.
1837        now get a perfect conservation of salt in advect_cs test-exp (updated)
1838    o GGL90 (Gaspar's TKE mixed layer)
1839      - add horizontal diffusion of TKE, requires exchanges in
1840        do_fields_blocking_exchanges, horizontal diffusivity is zero by
1841        default. In OPA there is no horizontal diffusion of TKE but the
1842        mixing coefficients are computed from a horizontal average of TKE of
1843        6 points or so. I think that diffusion has a little more physical
1844        justification.
1845      - clean up ggl90_calc in the hope of reducing memory usage (this hope
1846        was in vain)
1847      - mask tke-variable in ggl90_init
1848    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
1849    o fix biharmonic diffusion on CS-grid.
1850    o more obcs stuff
1851      - added obcs_external_fields_load as an alternative to the EXF-pkg option
1852        for reading boundary values. This routine is called from
1853        obcs_prescribe_read
1854      - updated obcs_check
1855      - changed sponge layer relaxation parameter units for days to seconds
1856      - turned off sponge layer by default
1857      - changed argument list of OBCS_CALC to myTime+deltaTclock
1858      - fixed about 35 bugs in obcs_external_fields_load
1859    
1860    checkpoint55c_post
1861    o obcs stuff
1862      - new runtime flags useOBCSprescribe, useOBCSbalance
1863      - re-arranged obcs_calc
1864      - moved exf_getobcs to obcs_prescibe_read
1865        obcs_prescibe_read is called after ORLANSKI stuff
1866        and independent of it (executable can contain all).
1867      - updated obcs_check
1868      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
1869        These may be necessary only if tangential velocities are
1870        prescribed at OB, not sure, needs testing.
1871    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
1872      which simplifies the calls and passes the ifc check-bounds test
1873    
1874    checkpoint55b_post
1875    o add a 2D scalar, Z location, exchange_2 routine.
1876    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
1877      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
1878      affects advect_cs results (for the wrong reason): update output.txt
1879    o use a more standard discretization for biharmonic viscosity ;
1880     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
1881      affects results of dome set-up: update output.txt
1882    o fix gad_advection.F (CubedSphere part), back to version 1.23
1883    o fix bug in mom_vi_del2uv.F (CubedSphere part).
1884    
1885    checkpoint55a_post
1886    o merged code to
1887      * prescribe/read time-dependent open boundaries
1888        (works in conjunction with exf, cal)
1889      * sponge layer code for open boundaries
1890      * each boundary N/S/E/W now has its own CPP option
1891        (healthy for the adjoint)
1892    
1893    checkpoint55
1894    o up-to-date adjoint of previous breaks
1895      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
1896      - global_ocean_ebm: adjoint still needs fix (TLM ok)
1897      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
1898      - carbon: * remove tr1-related adjoint verification
1899                * add ptracer as control variable
1900    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
1901      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
1902    
1903    checkpoint54f_post
1904    o in verification/carbin/ remove experiment related to
1905      ALLOW_PASSIVE_TRACER (array tr1 etc)
1906      code_ad/ input_ad/ results_ad
1907    
1908    o add two new packages
1909      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
1910        + subject to optimization (memory)
1911      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
1912        + subject to reordering (many GOTOs in the original code)
1913        + so far opps is called for every (i,j) point, and then operates in
1914          the vertical; one may want to reorder the scheme in order operate in
1915          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
1916          fields)
1917    o overhaul of IO so that we now have flags for MDSIO and/or MNC
1918      - all verification tests compile and run with linux_ia32_g77
1919      - defaults are compatible with current input files--nothing
1920        should change if you were not previously using MNC
1921      - MNC output has been added in numerous places (eg. timeave)
1922        but there are still a few writes not yet do-able with MNC
1923        (this is in progress)
1924      - flags now allow for either/or/both use of MDSIO and MNC and
1925        documentation will soon follow
1926      - numerous small formatting cleanups for ProTeX
1927    o add version info (via BUILD_INFO.h) to MNC and stdout
1928    
1929    checkpoint54e_post
1930    o add two new packages
1931      - pp81 (Packanowski and Philander, 1981), Richardson number and
1932        stratification dependent mixing
1933      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
1934      - these scheme operate in a similar manner as KPP (without ghat, of
1935        course), however there is only one diffusivity that is used for both
1936        temperature and salinity (and passive tracers)ç
1937    o add offline package
1938    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
1939      provided by Stephanie Dutkiewicz
1940    o genmake2: add ability to search for C compilers and cleanup test output
1941      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
1942    
1943    checkpoint54d_post
1944    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
1945    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
1946      leading to additional shift by 5 days each year of integration
1947       (i.e. leading to considerable offset over the years)
1948    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
1949    o start with no AB and no initial filtering (staggerTimeStep):
1950      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
1951    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
1952      (external loading & cpl import/export stay in forward_step.F)
1953    o update coupling interface to work with new staggerTimeStep
1954    o change MDSIO ptracers_pickup.
1955    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
1956    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
1957    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
1958    
1959    checkpoint54c_post
1960    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
1961      this affects (truncation error) output.txt of test-exp:
1962       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
1963    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
1964    o change Qnet to always be the net heat flux, (+upward).
1965      affects (truncation error) output of natl_box exp.: updated
1966    o define the max number of passive tracers in PTRACERS_SIZE.h
1967    o start to test mnc routinely in exp0
1968    o add sea-ice loading (sIceLoad) as a new forcing field.
1969    
1970    checkpoint54b_post
1971    o add testreport "-j JOBS" option for parallel builds (tested and pretty
1972       impressive on Altix and Opteron systems)
1973    o diagnostics can now write NetCDF files through the mnc package
1974    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
1975    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
1976    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
1977      affects (truncation error) output of lab_sea & natl_box exp.: updated
1978    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
1979    
1980    checkpoint54a_post
1981    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
1982    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
1983    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
1984    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
1985      + internal_wave (shift in writing cg2d_ini_res)
1986    checkpoint54a_pre
1987    
1988    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
1989      - modified verification/lab_sea and natl_box_adjoint accordingly
1990    
1991    checkpoint54
1992    checkpoint53g_post
1993    o prepare splitting of thermodynamics: store convect.counter in common block
1994    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
1995      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
1996    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
1997    o new parameter "nShapS": allow to treat differently S from T (nShapT)
1998    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
1999    o restore adjointability
2000    
2001    checkpoint53f_post
2002    o modifications that affect AIM experiment results (update output.txt):
2003      - no advection of S at top interface Nr (pkg/generic_advdiff)
2004      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
2005    o AIM pkg:
2006      - include stability function into surf.Flux derivative relative to Tsurf
2007      - calculate clear-sky radiation & surface temp. change (for diagnostics)
2008    
2009    checkpoint53e_post
2010    o merged cylindrical coord configuration
2011    o added rotating_tank experiment
2012    checkpoint53e_pre
2013    
2014    checkpoint53d_post
2015    o faulks upgraded: re-generate output.txt that have changed:
2016       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
2017    o Added Bryan and Lewis, 1979, vertical diffusivity profile
2018    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
2019    o added Sadourny discretization of Coriolis
2020      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
2021      - re-enabled use of omega3 (useAbsVorticity)
2022    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
2023      vector-invariant equations
2024      - note: does *NOT* yet use same variable visc. for no-slip BC's.
2025    o recoded the lateral boundary conditions for non-hydrostatic w, this time
2026      hopefully without new bugs
2027      - still to do: biharmonic friction for non-hydrostatic w
2028    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
2029    o regenerated output for global_ocean_ebm (using -ieee)
2030    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
2031      of mom_common/
2032      - simple re-arrangement of instructions within computing loop
2033    checkpoint53d_pre
2034    
2035    checkpoint53c_post
2036    o new version of coupler for AIM+thSIce and Ocean models
2037     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
2038     - land: change Evaporation of snow
2039     - aim with thSIce: fix bug in snow-precip.
2040    o changes to calc_gw.F
2041     - bug fix for w^2 term near the bottom boundary
2042     - (hopefully) improve the lateral slip boundary condtions for use with
2043        partial/looped cells
2044      - because the bug fix changes two verification experiments anyway (exp5
2045        and plume on slope), change the lateral boundary condition from half slip
2046        to the value of no_slip_sides
2047    o ebm package wasnt quite up to the parallel task. Fixed that.
2048    o Adjoint of EBM package + verification
2049      * TLM OK
2050      * ADM not sufficient accuracy yet (needs further testing)
2051    
2052    checkpoint53b_post
2053    o Commiting new energy balance model to repository
2054      * package is pkg/ebm
2055      * verif. is verification/global_ocean_ebm
2056      * references are in ebm_driver.F
2057    C      * X. Wang, P. Stone and J. Marotzke, 1999:
2058    C        Global thermohaline circulation. Part I:
2059    C        Sensitivity to atmospheric moisture transport.
2060    C        J. Climate 12(1), 71-82
2061    C      * X. Wang, P. Stone and J. Marotzke, 1999:
2062    C        Global thermohaline circulation. Part II:
2063    C        Sensitivity with interactive transport.
2064    C        J. Climate 12(1), 83-91
2065    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
2066    C        Destabilization of the thermohaline circulation
2067    C        by atmospheric eddy transports.
2068    C        J. Climate 7(12), 1870-1882
2069    o Will need long integration testing.
2070    checkpoint53b_pre
2071    
2072    o created pkg/mom_common in preparation for variable viscosity code
2073    o renamed and split ini_mnc_io
2074    o pkg/land: only liquid water can diffuse or run-off
2075    o AIM using land: soil wetness availability account for snow
2076    o added printMapIncludesZeros to EEPARMS namelist
2077    
2078    checkpoint53a_post
2079    o restore TAMC compatiility for exf_constants.h
2080      (no usage of _d in .h)
2081    o Additional storing in KPP in an attempt to fix
2082      TAMC problem with adjoint of KPP code.
2083      (no success...)
2084      Identical code works fine with TAF.
2085    o Fixed verification/natl_box_adjoint experiments.
2086      Initial conditions for Experiments 4 and 5 are now
2087      set to "SEAICE_initialHEFF=0", which is more reasonable,
2088      and hence gives results closer to that of Experiment 2.
2089      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
2090    
2091    checkpoint53
2092    o stable checkpoint with up to date adjoint
2093      TLM tests only run for 1st grdchk at the moment. Its unclear if
2094      this is a code problem or a problem with resetting code for g_
2095      variables that is being autogenerated wrong.
2096      Otherwise:
2097       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
2098       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
2099         are both still in chaos following their security messes.
2100    
2101    checkpoint52n_post
2102    o various build (mostly genmake2) changes including:
2103      - ability to build/run more easily within Cygwin and MacOS X
2104      - more complicated Makefiles with a stronger dependence on Gnu Make
2105    o pkg/seaice modifications
2106      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
2107        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
2108        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
2109      - changed proxy for geostrophic velocity and updated
2110        verification/lab_sea/results/* accordingly
2111      - removed ADI dynamic solver from pkg/seaice
2112      - replaced all occurrences of 1/CSTICE or 1/CSUICE
2113        they caused a segmentation fault under certain circumstances
2114      - removed unused field WATR
2115    o bug fix in exf-package:
2116      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
2117         now reflect that.
2118    o small fixes in the cal-package:
2119      - set reference date to first of January for the 'model'-calendar
2120      - failing of cal_CheckDate in cal_FullDate now actually results in a
2121        warning
2122    o small modifications in exf-package to increase flexibility:
2123      - change climtempfreeze from a constant to a runtime parameter that
2124        is specified in data.exf_clim (default = -1.9)
2125      - introduce runtime parameter windstressmax (default = 2.0) that is
2126        specified in data.exf
2127    o fix in pkg/thsice:
2128      - update Evap (Tsf changes) to be consistent with Latent heat flux
2129      - maintain snow precipitation unchanged (even if Tsf >=0).
2130     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
2131    
2132    checkpoint52m_post
2133    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
2134      this does not change any of the results, because myIter=0 in swfrac always
2135      lead to jwtype=2 (the default anyway), but the call makes little sense
2136      as a default
2137    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
2138    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
2139      atmospheric model (AIM) to use it ; add a "slab ocean" component.
2140    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
2141    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
2142    o extending useSingleCpuIO option to work with new exch2 I/O format
2143      - old-style, missing-tile I/O is still accessible by defining CPP
2144        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
2145    o monitor package can write to NetCDF files and/or STDOUT
2146    o fix re-definition bug in MNC_GRID_INIT_ALL()
2147    o doc/api_reference added
2148      - a framework for building an API Reference Manual using all
2149        the "protex" comments embedded in the code
2150      - see pkg/generic_advdiff, pkg/mnc for examples
2151    o MNC:
2152      - make myThid the last argument for all subroutines
2153      - new default for the grid files: NO halos
2154      - add useMNC and other run-time flags
2155      - separate per-file-group handling of the unlimited dimension
2156      - early initialization of MNC w/ flags read at the eeboot stage
2157        and lookup tables set in initialize_fixed
2158      - write all MNC output to a freshly-created directory
2159    o thermodynamics sea-ice (thsice) is now tested with testreport.
2160    o test exp. advect_cs: use the standard cs32 grid ; update output.
2161    o Added functionality to grdchk:
2162      pick global i,j,k position (or nearest wet) where to perform check.
2163    
2164    checkpoint52l_post
2165    o new land formulation:
2166      a) use ground enthalpy as prognostic variable to ensure exact
2167         energy conservation.
2168      b) account for water temperature and for latent heat of freezing
2169         in all processes (rain, run-off, ground storage)
2170      c) compute surface and ground temperature implicitly.
2171    o aim_v23 modification for new land model:
2172      a) Treat separately land / ocean / sea-ice surface fluxes
2173         to allow implicit computation of land & sea-ice surface temp.
2174      b) add snow precipitation.
2175    checkpoint52l_pre
2176    
2177    o fix problem (when 1 tile is empty) in min/max monitor.
2178    o fix bug in timeAve (u,vZetatave in common block)
2179    o no restoring terms under ice for pkg/seaice
2180    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
2181    o bug fix for pkg/seaice pickups
2182    o change MNC call locations and add coordinate attributes
2183    o mask vorticity at the corner ; affects global_ocean.cs output
2184    o fix ini_curvilinear_grid ; test CS experiments with mpi
2185    o aim.5l_cs: modify sea-ice fraction input file ; update output
2186    o exf: Adding simple range check routine for exf fields after read
2187    
2188    checkpoint52k_post
2189    o removed top-level directory "diags"
2190      - we migrated these functions to pkg/timeave a long time ago
2191    o fixed bug introduced in pkg/monitor
2192    o accuracy ctrlprec = 32 insuffient for gradient checks using
2193      averaged fields (I/O via cost_averages)
2194      -> use ctrl.h in active_file*.F to control I/O precision.
2195    o paramter list of CALL ADTHE_MAIN_LOOP
2196    o added initial do_the_model_io to ecco
2197    o set all ...Freq to zero after cost_final
2198      taveFreq, dumpFreq, pChkptFreq
2199    o MAIN and ECCO differentiability restored
2200    
2201    checkpoint52j_post
2202    o fix nchklev in tamc.h for global_ocean...
2203    o Bringing flow and store directives up-to-date
2204    o Really weird thing!
2205      call do_the_model_io from the_main_loop with parameters
2206      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
2207      TAF places a faulty re-call of initialise_varia
2208      after cost_final call which should not be there!
2209    checkpoint52j_pre
2210    
2211    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
2212      error messages
2213    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
2214    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
2215      debug output
2216    o modfied mdsio_writefield.F to handle non-global files under exch2
2217    o update AIM Cubed-Sphere exp (aim.5l_cs):
2218      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
2219    o update AIM Equatorial Channel exp:
2220      use standard aim_v23 pkg and change the SST fields to be more realistic.
2221    o globalFile now works with exch2
2222    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
2223      mon_vort3.F to make exch2 friendly with >1 tile per cube face
2224    o limit timeave output for hi-res integrations
2225    
2226    checkpoint52i_post
2227    o removed CPP_EEOPTIONS.h from verification/*/code
2228    o updated the tiling for global_ocean_pressure
2229    checkpoint52i_pre
2230    
2231    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
2232      the old pkg/aim).
2233    
2234    checkpoint52h_pre
2235    o shortened offending lines in exch2_send_rx?.template
2236    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
2237    o genmake2: add build & execute test for NetCDF code
2238    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
2239      old grid files, moved CPP_EEMACROS.h to pkg/exch2
2240    o added useSingleCPUIO flag to monitor.F and mon_out.F
2241    o added temporary hack for sea-ice dynamics on the cube:
2242      metric terms are ignored and it is assumed that
2243      there is no sea-ice on cube faces 1, 2, 4, and 5.
2244    
2245    checkpoint52f_post
2246    o added exch2 cube routines to pkg/exch2
2247    o modified hs94.cs-32x32x5 to use it
2248    o added new grid files to hs94.cs-32x32x5
2249    checkpoint52f_pre
2250    
2251    checkpoint52e_post
2252    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
2253      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
2254    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
2255      to work with implicit vertical advection and AB ;
2256    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
2257    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
2258     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
2259    checkpoint52e_pre
2260    
2261    o fix bug in impldiff when Nr=1 or Nr=2.
2262    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
2263    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
2264    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
2265      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
2266    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
2267    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
2268    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
2269    
2270    checkpoint52d_post
2271    o re-tiled many expts to allow comparison in multi-processor mode
2272      - updated output accordingly
2273      - changed hs94.128x64x5 to use intial T from file rather than use the
2274        random number generator
2275    o add infrastructure in model routines for fizhi and gridalt packages
2276    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
2277    o changes to permit hi-res, cubed-sphere, configuration
2278      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
2279      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
2280      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
2281        of surface winds for the cube
2282      (A verification experiment, based on global_ocean.cs32x15, but with
2283       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
2284       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
2285       complete with example surface forcing files and matlab scripts to look
2286       at the output and compare it with that of global_ocean.cs32x15.)
2287    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
2288       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
2289       to conform to the common rule.
2290    o check-in the first version of the coupler + interfaces for multi-components
2291       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
2292       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
2293       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
2294       - ocean and atmos. share the same horizontal grid (no interpolation).
2295       - exchanges between component and coupler is done in forward_step
2296    o new verification experiment, cpl_aim+ocn:
2297       coupled ocean - AIM atmosphere on cs32 grid.
2298    
2299    checkpoint52d_pre
2300    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
2301    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
2302    
2303    checkpoint52c_post
2304    o Fixing OPTIONS files for use of exf:
2305      - ALLOW_ECCO not needed
2306      - ECCO_CPPOPTIONS.h should not be included from
2307        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
2308        as has been the case in the past
2309      - All cal/exf related options are currently set in
2310        single header file. Should remain so until we
2311        agree on a consistent new policy.
2312    o Removed all CPP options for cal package.
2313      cal has no more CPP options.
2314    o modified STOREs in GAD_ADVECTION
2315    o corrected key comp. for passkey
2316    
2317    checkpoint52b_post
2318    o new version: "thsice" of thermodynamic sea-ice pkg:
2319     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
2320     - modify fluxes but do not change theta directly;
2321     - light cleaning of bulk_force pkg (still needed with thsice).
2322     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
2323       + output_thsice.txt to test thsice & bulk_force pkgs.
2324    o put back grid & coriolis monitor output.
2325    checkpoint52b_pre
2326    
2327    o call "do_the_model_io" at the beginning (=> dump initial state)
2328    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
2329    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
2330      (need info on NUMBER_OF_PTRACERS)
2331    o missing PTRACERS headers in some routines
2332    o default tamc.h in pkg/autodiff supposed to crash
2333      to ensure proper customization
2334    
2335    checkpoint52a_post
2336    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
2337      - moved surfaceTendencyTice from pkg/seaice to main code
2338      - subroutine FREEZE_SURFACE now limits only surface temperature
2339        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
2340        => new output.txt for global_ocean.cs32x15 & global_with_exf
2341      - keep the old version of FREEZE for backward compatibility;
2342        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
2343      - corresponding modifs for TAF directives
2344    o added surface flux output variables to TIMEAVE_STATVARS
2345    o time-averaged output for pkg/ptracers
2346    o fix problem with ECCO-related divided adjoint
2347      snapshot file was missing some ad-variables,
2348      but no warning issued by TAF
2349    
2350    checkpoint52a_pre
2351    o some bug fixes for #undef REAL4_IS_SLOW
2352    
2353    checkpoint52 = ecco_c52_e35
2354    o after testing adjoints of checkpoint51u_post
2355    
2356    checkpoint51u_post
2357    o this is the post-merge tag of the ecco-branch
2358      (needs another clean checkout and re-testing)
2359    o various natl_box_adjoint configs and results
2360      but no input fields
2361    o obcs adjoint not yet merged!
2362    o adding ECCO global 1x1 and 2x2 degree configs
2363    o updated/extended some store directives for seaice
2364    o pkg/ecco now containes ecco-specific part of cost function
2365    o top level routines the_main_loop, forward_step
2366      supersede those in model/src/
2367      previous input data.cost now in data.ecco
2368      (new namelist ecco_cost_nml)
2369    o in ctrl/ cleaned some cross-dependencies and updated CPP options
2370    
2371    checkpoint51t_post
2372    o this is the pre-merge tag of the ecco-branch
2373    
2374    checkpoint51s_post
2375    o cleanup: removed various obsolete #define-s
2376    o pkg/grdchk
2377      - renamed 'ph-grd 3' to 'grad-res'
2378      - merged from ecco-branch
2379        (remaining bug fixes for obcs gradient checks)
2380      - additional high-precision output for testreport
2381        (grep for 'precision_grdchk_result')
2382    
2383    checkpoint51r_post
2384    o cleaned up or removed CPP_OPTIONS.h files
2385    o updated results for some of the tests to reflect the new
2386      optfiles (-ieee: -O0 instead of -O3)
2387    
2388    checkpoint51q_post
2389    o cd_code:
2390      - moved cd_scheme.F -> cd_code_scheme.F
2391      - separate read_checkpoint from cd_code_ini_vars.F
2392      - separated cd_code part from write_checkpoint
2393      - updated AD_SOURCE, generated .flow
2394      - added CD_CODE_VARS.h to the_main_loop
2395      - Moving cd_code specific store dir.s to pkg/cd_code
2396    o ctrl package totally restructured
2397      - pack/unpack now optional and decoupled from
2398        xx_/adxx_ I/O
2399      - ctrl_pack/unpack cleaned
2400        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
2401      - confined inclusion of AD_CONFIG.h to where necessary.
2402    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
2403    
2404    checkpoint51p_post
2405    o create initial cd_code package
2406      - WARNING: the initialization of fields within packages
2407        is broken because INI_FIELDS (where READ_CHECKPOINT is
2408        called) is called *before* PACKAGES_INIT_VARIABLES.
2409        This seems to be backwards since
2410        1) its important to initially zero the entire field including
2411           the "halo" region
2412        2) zeroing needs to be done *before* reading pickup info
2413           and the pickup call might or might not happen in any
2414           particular run
2415      - this needs an overhaul for R2
2416    o cleanup verification/*/code/GMREDI_OPTIONS.h
2417    o cleanup testreport
2418    
2419    checkpoint51o_post
2420    o bringing AD-related verif's up to date with genmake2
2421      - carbon/
2422      - global_ocean.90x40x15/
2423      - hs.94.1x64x5/
2424      - (front_relax/ )
2425    o (more) consistent directory structure for AD-related verif.'s
2426    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
2427    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
2428    o bug fix in find_alpha.F for MDJWF:
2429      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
2430        change rho -> rho-rhoConst
2431      - replace call find_rho to find_rhonum
2432    o initialisation of rFlx extended to full array (required by TAF)
2433      and shifted to thermodynamics
2434    o removed PTRACERS.h in ptracers routine
2435    o added surfacetendencyPtr to S/R parameter list pracers_forcing
2436    o Correcting initialisations for fVerU, fVerV.
2437    o helping TAF to recognize dependency on kUp for
2438      fVerU, fVerV
2439    o Replacing delZ by delR in pkg/ctrl/
2440    checkpoint51o_pre
2441    
2442    o undid all of cp51 pending some cleanups and discussion
2443    o added the [#include "AD_CONFIG.h"] statement to all files that need
2444       it for adjoint/tl #defines
2445     o re-worked the build logic in genmake2 to support AD_CONFIG.h
2446     o removed tools/genmake since it no longer works
2447    
2448    checkpoint51n_post
2449    o modifications to make FREEZE flux visible to pkg/kpp
2450      - moved surfaceTendencyTice from pkg/seaice to main code
2451      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
2452      - subroutine FREEZE now limits only surface temperature
2453        (this means new output.txt for global_ocean.90x40x15,
2454         global_ocean.cs32x15, and global_with_exf)
2455    o added surface flux output variables to TIMEAVE_STATVARS
2456    
2457    checkpoint51n_pre
2458    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
2459    o added [#include "AD_CONFIG.h"] to all files that use the following
2460      defines:
2461      - ALLOW_ADJOINT_RUN
2462      - ALLOW_TANGENTLINEAR_RUN
2463      - ALLOW_ECCO_OPTIMIZATION
2464    
2465    checkpoint51m_post
2466    o incorporating changes to get TAMC/TAF working in genmake2
2467      - added new TAMC/TAF targets to the Makefile
2468      - various cleanups related to package handling
2469      - these changes should have no impact on the forward model
2470    
2471    checkpoint51l_post
2472    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
2473     - faster algorithm for cal_addtime.F
2474     - higher precision arithmetic, where needed
2475     - pkg/exf *startdate variables changed from calendar date to
2476       model integration time
2477    
2478    checkpoint51l_pre
2479    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
2480    o enable to apply restoring on S & T only in a latitude band.
2481    o update output (external_forcing_surf modif. change truncation errors)
2482       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
2483    
2484    checkpoint51k_post
2485    o change default to: useNHMTerms=.FALSE.
2486     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
2487       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
2488     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
2489        exp1, ideal_2D_oce
2490     - change data file of oceanic exp (leave the results unchanged for now)
2491       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
2492    o set gravitySign automatically according to the vertical coordinate used
2493      (and change sign: back to "logical" value: +1 when R increases downward)
2494    o added an include barrier to the default CPP_OPTIONS.h and
2495      removed the #include "PACKAGES_CONFIG.h" from it
2496    o fix a bug in mom_fluxform (from chk51j_post)
2497    
2498    checkpoint51j_post
2499    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
2500    o adjusted some flow directives (dynamics, thermodynamics)
2501    o added cubed-sphere case to test cost function
2502    o heckpoint_lev?_directives.h now include
2503      pkg-specific directives, whenever those are enabled.
2504    o Moving pkg-specific flow directives to corresponding pkg
2505      Moving pkg-specific differentiation list to corresponding pkg
2506      Moving pkg-specific checkpoint-lev storing to corresponding pkg
2507      ---> conventions are
2508           - pkg_ad.flow
2509           - pkg_ad_diff.list
2510           - pkg_ad_check_lev?_dir.h
2511    
2512    checkpoint51i_post
2513    o merge of the branch-genmake2
2514      - knowingly breaks the older genmake
2515      - automatic generation of all ALLOW_${PKG_NAME} defines
2516      - new testreport supersedes older testscript
2517    o large number of package inclusion and header cleanups
2518    checkpoint51i_pre
2519    
2520    o new output for adjoin of global ocean vector invariant
2521    o fix for checkpoint of thermodynamic seaice and bulk_force
2522    o Steph gchem various cleanups
2523    
2524    checkpoint 51h_pre
2525    o fixed some single quotes
2526    o modify gchem pkg to be more versatile
2527    o modifications to clean up dic pkg
2528    o add pkg/cfc
2529    
2530    checkpoint51g_post
2531    o provide links for ARPACK and ADM*TLM
2532    o start removing verification/vero/
2533    o update AD-related stuff
2534      (in particular some IF-statements in model/src/ routines)
2535    o adding to verification/global_ocean.90x40x15/ adjoint of
2536      vector invariant setup
2537    
2538    checkpoint51f_post
2539    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
2540    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
2541      of tracer Green's fucntions for ocean inversion project.
2542    
2543    checkpoint51f_pre
2544    o Added on-the-fly spatial interpolation capability
2545        "USE_EXF_INTERPOLATION" to pkg/exf.
2546      - This is a temporary Cartesian-grid hack until
2547        the super-duper ESMF coupler becomes available.
2548      - See verification/global_with_exf/README for usage example.
2549      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
2550        flags and modified pkg/seaice accordingly.
2551    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
2552        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
2553        non-local transport term.
2554    
2555    checkpoint51e_post
2556    o pkg/mom_vecinv:
2557      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
2558      - add time-ave diagnostic of vorticity advection.
2559    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
2560    o atmospheric geopotential: - include water vapor effect;
2561                                - use p^kappa in p* scaling.
2562    o land pkg: read initial state from files.
2563    o AIM : add stratospheric drag in the upper level
2564    
2565    checkpoint51d_post
2566    o change function ILNBLNK (=> last non-blank char.) to return zero
2567      (instead of the string length) when the string. char is empty
2568    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
2569    o modif's to restore TAMC compatibility
2570      - avoid "_d" constructs in PARAMETER declarations
2571      - avoid interrupting lines by comment lines
2572    o Use cluster local disks for purely local I/O
2573      vs. globally visible disks needed for ctrl stuff
2574      (merged from ecco-branch)
2575      - new active_file_loc... and mdsio_..._loc routines
2576      - affected packages: autodiff, ctrl, grdchk, mdsio
2577    
2578    checkpoint51c_post
2579    o introducing integer flag debugLevel
2580      - debLevZero: suppress all output
2581      - debLevA: standard
2582      - debLevB: equivalent to current debugMode=.TRUE.
2583    o introducing pathname variable mdsioLocalDir for mdsio
2584      that can be specified at runtime
2585      (relevant for cluster I/O to local disk)
2586    `
2587    >>>checkpoint51b_post
2588    adjoint of ptracers
2589    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
2590    o extended state in checkpoint_lev?, etc.
2591    o alternative ctrl/cost with tr1 or ptracer
2592    o new comlev1_bibj_ptracers
2593    o new ptracers.flow
2594    o made ptracers_forcing same as external_forcing_s
2595    o added verification for adjoint with ptracers
2596      - adm. grdchk fail so far
2597      - tlm. grdchk OK
2598      - checked tapelev/comlev recomputations: OK
2599    <<<checkpoint51b_pre
2600    
2601    checkpoint51a_post
2602    o added code for biogeochemistry package
2603      - new pkgs: dic, gchem
2604      - new subroutine in ptracers
2605    o modify code for biogeo packages
2606      - in model/src and pkg/ptracers
2607    
2608    checkpoint51
2609    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
2610      - autodiff, ctrl, exf, grdchk, seaice
2611      kept separate packages
2612      - cost, ecco, obcs
2613    o updating verification/internal_wave, verification/lab_sea
2614      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
2615    
2616    checkpoint50i_post
2617    o Preparing next differentiable checkpoint and sync
2618      of MAIN vs. ecco-branch
2619      - 1st step: this one is differentiable
2620      - 2nd step: next(! not this) checkpoint will have updated packages
2621                  from ecco-branch)
2622    
2623    checkpoint50h_post
2624    o new package "land": provide surface BC for AIM.
2625    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
2626    o AIM: use true log-P extrapolation for near surface temp (= as in
2627        F.Molteni paper) ; update aim.5l_cs output.
2628    o New variable in PARM03 for more flexible pickups
2629    o somewhat cleaned package initialisation sequence for
2630      ctrl/ cost/ ecco/ in packages_... routines
2631    
2632    checkpoint50g_post
2633    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
2634      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
2635      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
2636        made the default because of faster convergence than ADI
2637    
2638    checkpoint50f_post
2639    o exf totally restructured
2640      - replaced all exf_set_ routines by one generic exf_set_gen.F
2641        and made sure it's still differentiable
2642      - split exf_getffields.F into new exf_bulkformulae.F
2643      - exf_inscal_/exf_outscal_ suffixes consistent with field names
2644      - updated adjoint/makefile and relevant verif. accordingly
2645    
2646    checkpoint50f_pre
2647     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
2648          + change Evap over land. (update aim.5l_cs output)
2649     o added missing .cvsignores and made uniform across expts
2650     o changed configuration of tidal_basin_2d expt
2651     o added pkg/debug functions for tracing code in fatal crashes
2652     o tidied pkg/monitor to use MONITOR_OPTIONS.h
2653     o new fn in pkg/monitor to stop model if solution grows too big
2654     o removed lots of single quotes from comments
2655    
2656    checkpoint50e_post
2657    o make KPP work with PTRACERS
2658     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
2659       nearly a copy of kpp_transport_s
2660     - there is no analogue to SurfaceTendencyS, so I have to use
2661       gPtr(of the surface layer) instead
2662    o add a new platform SunFire+mpi (SunFire 15000) to genmake
2663    checkpoint50e_pre
2664    
2665    checkpoint50d_post
2666    o change kpp output from multiple-record state files to single-record state
2667      files analogous to write_state.F
2668    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
2669      analogous to the cg2d-related output.
2670    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
2671      so that writing to internal file fn (with length 512) fails.
2672    checkpoint50d_pre
2673    
2674    checkpoint50c_post
2675    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
2676    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
2677    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
2678    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
2679    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
2680    
2681    checkpoint50c_pre
2682    Merging from release1_p13:
2683    o bug fix for pkg/seaice dynamic solver
2684    o Added SEAICE_initialHEFF to pkg/seaice
2685    
2686    checkpoint50b_post
2687    o store u*,v* in gU,V instead of in guNm1,gvNm1
2688    o in order to put the momForcing out of the Adams-Bashforth:
2689      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
2690      to timestep.F
2691    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
2692    o re-generate output for highly sensitive test-exp:
2693       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
2694    
2695    checkpoint50b_pre
2696    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
2697    o corrected CPP option mismatch in exf_Bulk... functions for case
2698      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
2699    
2700    checkpoint50a_post
2701    o Bug fix for merging between c50 and KPP.
2702      ikey was passed from thermodynamics to kpp_calc via
2703      common block rather than being recomputed in kpp_calc,
2704      in contradiction with new key itdkey.
2705      New key ikppkey created, and tamc.h headers updated.
2706    
2707    checkpoint50
2708    - 2nd step of merge with ecco-branch:
2709      merge changes in ecco-branch back into main trunk
2710    - bug fix in find_alpha
2711    - more storing in gmredi_calc_tensor.F, kpp_routines.F
2712    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
2713    - merged some sliced AD support routines
2714    
2715    checkpoint49
2716    merged from ecco-branch:
2717    o exf:
2718      - Enable initialisation of forcing fields to constant
2719        (runtime) values.
2720      - in exf_getffields.F
2721        Reduce i-/j-loop to interior domain, discarding overlaps.
2722        That also fixes wrong TAF-key computations for key_1, key_2
2723        with bulf formulae.
2724      - exf_init.F modify #ifdef for exf_init_evap
2725      - exf_getffieldrec.F, ctrl_getrec.F
2726        The following INT-usages are not safe:
2727          fldsecs  = int(fldsecs/fldperiod)*fldperiod
2728          fldcount = int(fldsecs/fldperiod) + 1
2729        and were modified.
2730    o autodiff: checkpoint_lev...
2731      - updated storing for bulk formulae (some arrays were missing)
2732      - added state for seaice package
2733      - synchronized with main branch
2734    o DIVA:
2735      Modif.s in
2736      - the_main_loop.F
2737      - the_model_main.F
2738      and added cost_final_restore.F cost_final_store.F
2739      o With these changes, it is possible to fully separate
2740        the first forward run to compute the cost function (mdthe_main_loop)
2741        and adjoint runs over individual DIVA intervals (adthe_main_loop)
2742        into separate model executions.
2743        This enables better tuning of DIVA to given queue sizes.
2744      o Loss of cost function value in consecutive DIVA runs is
2745        fixed by storing to 'costfinal' file.
2746      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
2747        beginning/end of adjoint integration is accounted for.
2748      The current changes apply to TAF-1.4.26.
2749      TAF has one remaining bug, requiring one manual change
2750      (see MITgcm manual).
2751    o cal: synchronized between MAIN and ecco-branch
2752    
2753    checkpoint48i_post
2754    o Changes to restore differentiability of code w.r.t. previous tag
2755      (mostly adding new routines to make list and replacing
2756      pressure by totPhiHyd).
2757    o Updated and merged grdchk package
2758      - has both ADM and TLM checks
2759      - works for single- and multi-proc.
2760      - output cleaned
2761      - worked successfully for parallel DIVA
2762    o genmake:
2763      - Adding -platform=SP4
2764      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
2765    o Modif. for DIVA:
2766      ctrl_unpack should not be called in intermediate DIVA interval.
2767      (similar thing would apply for active files such as
2768      tbar, sbar, psbar, which should not be reinitialised;
2769      only relevant for ecco-branch)
2770    
2771    checkpoint48h_post
2772    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
2773    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
2774    o Added SEAICE_initialHEFF to pkg/seaice
2775    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
2776    
2777    checkpoint48g_post
2778    --- EOS:
2779    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
2780      store total Potential in totPhyHyd for diagnostics & EOS.
2781    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
2782    --- Pressure/geopotential gradient:
2783    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
2784    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
2785      ( changes results of global_ocean_pressure )
2786    o NLFS + z-coord.: add eta*Rho' contribution.
2787    o accurate phiHyd when using interface-W at the middle between 2 centers
2788     ( changes results of ideal_2D_oce )
2789    o includes r* 2nd term in potential gradient.
2790    
2791    checkpoint48f_post
2792    Merging from release1_p12:
2793    o Modifications for using pkg/exf with pkg/seaice
2794      - improved description of the various forcing configurations
2795      - added basic radiation bulk formulae to pkg/exf
2796      - units/sign fix for evap computation in exf_getffields.F
2797      - updated verification/global_with_exf/results/output.txt
2798    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
2799      (SBO) core products, including oceanic mass, center-of-mass,
2800      angular, and bottom pressure (see pkg/sbo/README.sbo).
2801    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
2802      to avoid negative values in shallow regions.
2803      - updated verification/natl_box/results/output.txt
2804      - updated verification/lab_sea/results/output.txt
2805    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
2806    o Added useSingleCpuIO option (see PARAMS.h).
2807    o Updated useSingleCpuIO option in mdsio_writefield.F to
2808      work with multi-field files, e.g., for single-file pickup.
2809    o pkg/seaice:
2810      - bug fix in growth.F: QNET for no shortwave case
2811      - added HeffFile for specifying initial sea-ice thickness
2812      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
2813    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
2814      kpp_transport_t.F, forward_step.F, and the_main_loop.F
2815    o pkg/seaice:
2816      - adjoint-friendly modifications
2817      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
2818    
2819    checkpoint48e_post
2820    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
2821    o dynamics: change definition of computational domain & adapt mom_fluxform
2822      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
2823    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
2824        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
2825        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
2826        global_ocean.90x40x15 global_with_exf global_ocean_pressure
2827        inverted_barometer solid-body.cs-32x32x1
2828      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
2829    
2830    checkpoint48d_post
2831    o in preparation for r*:
2832     a) use pre-computed gradient of hydrostatic potential:
2833        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
2834     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
2835        => affects results of glob_oce_pressure (different truncation error)  
2836      update output.txt of ideal_2D_oce & global_ocean_pressure
2837    
2838    checkpoint48d_pre
2839    o in preparation for r*:
2840      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
2841      pass the 2 comp. of the grad. as arguments to momentum S/R.
2842      but for the moment, only used if it does not change the results.
2843    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
2844    
2845    checkpoint48c_post
2846    Modifications in treatment of initial flux forcing controls
2847    to avoid extra storing of flux fields.
2848    
2849    checkpoint48c_pre
2850    o Added tidal_basin_2d experiment (currently 1D!)
2851    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
2852    
2853    checkpoint48b_post
2854    o r* coordinate added in #ifdef NONLIN_FRSURF block.
2855     (modification to pressure gradient not yet implemented)
2856    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
2857      (for U & V) that are used for vertical advection of momentum.
2858    
2859    checkpoint48a_post
2860    o In preparation for r*, use temp. array to compute vertical transport
2861       in flux-form momentum pkg. => change results of few test-exp.
2862      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
2863                        lab_sea, natl_box & plume_on_slope
2864    
2865    checkpoint48
2866    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
2867    
2868    checkpoint47j_post
2869    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
2870    o moved adexch from forward_step to addummy_in_stepping
2871    o added exch in ctrl_map_...
2872    o aveFreq.=0. at end of cost_final to avoid overwrite in
2873      reverse checkpointing loop
2874    o Yet more changes in gmredi:
2875      * adgmredi_calc_tensor
2876        avoiding all recomputation of gmredi_slope_limit
2877      * adgmredi_x/y/rtransport
2878        added flag for excessive storing to avoid recomp. of
2879        u/v/rtans, dTdx/y/z
2880        -> this is not really necessary and very memory-consuming
2881      * adgmredi_slope_psi:
2882        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
2883      * gmredi_slope_limit
2884        re-activated full calculation of taperfct for case 'ac02'
2885    o updating verification/ adjoints of carbon, global_ocean.90x40x15
2886    
2887    checkpoint47i_post
2888    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
2889    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
2890      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
2891    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
2892    o gmredi: fix few bugs.
2893    
2894    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
2895    This will be a good checkpoint to plug into the ecco-branch.
2896    o few modif.'s to get latest version adjointed
2897      (mainly kick out code in ini_linear_phisurf)
2898    o modif's to run adjoint with exactConserv
2899    o case GM_BOLUS_ADVEC should be cleaned
2900      S/R gmredi_slope_psi should be cleaned
2901    o verification/carbon now has exactConserv=.TRUE.
2902    
2903    checkpoint47g_post
2904    o time-average AIM output: becomes independent from statvars time-average
2905      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
2906    o After TAF bug fix:
2907      Tested adjoint of gmredi package.
2908      Tests were done with checkpoint47 rather than with latest
2909      checkpoint47f_post since the latter is broken for the adjoint
2910      verification/carbon/ contains both ADM and TLM gradient checks.
2911    Here they are, before they get changed/lost/stolen.
2912    Mostly modif.'s to fix numerical sensitivities.
2913    Gradient checks OK for
2914    - GM_taper_scheme:
2915      * clipping
2916      * ac02
2917      * linear
2918      * glw91
2919      * dm95
2920      * ldd97
2921    - GMREDI_OPTIONS:
2922      * GM_VISBECK_VARIABLE_K
2923      * GM_NON_UNITY_DIAGONAL
2924      * GM_EXTRA_DIAGONAL
2925      * GM_BOLUS_ADVEC
2926    in conjunction with data.gmredi parameters to be checked in
2927    in a few minutes under verification/carbon/code/
2928    
2929    checkpoint47f_post
2930    Merging from release1_p10:
2931    o modifications for using pkg/exf with pkg/seaice
2932      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
2933        and SEAICE_EXTERNAL_FLUXES
2934      - pkg/exf CPP options EXF_READ_EVAP and
2935        EXF_NO_BULK_COMPUTATIONS
2936      - usage examples are Experiments 8 and 9 in
2937        verification/lab_sea/README
2938      - verification/lab_sea default experiment now uses
2939        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
2940    
2941    checkpoint47e_post
2942    o created a tag prior to creating a branch
2943    
2944    checkpoint47d_post
2945    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
2946      at the bottom boundary had an erroneous half slip boundary condition
2947    o added bottom drag and no slip boundary condition capabilities to
2948      oceanic pressure coordinates code
2949    o added new verification experiment global_ocean_pressure, this experiment is
2950      also described in the tutorial section of the manual
2951    checkpoint47d_pre
2952    
2953    checkpoint47c_post
2954    o Added a verification experiment for a global cubed-sphere ocean run
2955      -  verification/global_ocean.cubed32x32x30
2956      -  uses pkg/therm_seaice and pkg/bulk_forcing
2957    
2958    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
2959    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
2960      when using P-coordinate; only implemented for atmospheric config.
2961    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
2962      NOTES: requires option NONLIN_FRSURF to be "#define".
2963    o update advect_xz/results/output.txt (left from checkpoint44g_post)
2964    
2965    checkpoint47b_post
2966    Merging from release1_p9:
2967    o pkg/seaice
2968      - removed GOTO's and added taf directives
2969      - double precision constants to reduce the g77 (Linux)
2970        to F77 (SGI) differences reported in release1_p8
2971    o tools/genmake
2972      - added SGI options
2973    o verification/testscript
2974      - updated to that of checkpoint47a_post
2975    o verification/global_ocean.90x40x15/input/eedata
2976      - modified for SGI f77 compatibility
2977    o verification/lab_sea
2978      - added description of sea-ice model
2979      - added missing matlab routines
2980      - added test of thermodynamics parallelization
2981    
2982    checkpoint47a_post
2983    o new pkg: aim_v23
2984     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
2985       for now, keep the same surface forcing as before.
2986     - Part-Cell implemented into AIM; check that Heat & Water are conserved
2987     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
2988     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
2989    o add diagnostic of surface correction term in monitor output
2990    
2991    o bulk_force and therm_seaice
2992    - Two packages:  bulk_force (Bulk forcing)
2993      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
2994    - Earlier integration from Stephaine Dutkiewicz
2995      and Patrick Heimbach.
2996    - Two ifdef statements for compile time,
2997       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
2998    
2999    checkpoint47
3000    differentiable version of checkpoint46n_post
3001    o bug fix in quasihydrostaticterms
3002    o * "clean" adjoint code (in terms of extensive recomputations)
3003        can now be obtained for all GMREDI options (i.e. for
3004        - GM_VISBECK_VARIABLE_K
3005        - GM_NON_UNITY_DIAGONAL
3006        - GM_EXTRA_DIAGONAL
3007        - GM_BOLUS_ADVEC )
3008      * However, wrong gradient check problem remains unsolved.
3009      * New CPP options have been introduced for different
3010        tapering schemes
3011    o external_fields_load now part of differentiation list
3012    o pressure needs multiple storing;
3013      would be nice to have store_pressure at beginning or
3014      end of forward_step, e.g. by having phiHyd global (5-dim.)
3015      (NB: pressure is needed for certain cases in find_rho,
3016      which is also invoked through convective_adjustment).
3017    o recomputations in find_rho for cases
3018     'JMD95'/'UNESCO' or 'MDJWF' are OK.
3019    o #define ATMOSPHERIC_LOADING should be differentiable
3020    o ini_forcing shifted to begining of initialise_varia
3021    o Incorporating QNVS line search routines into MITgcm
3022      (this is separate code, and therefore not under pkg)
3023      lsopt/, optim/
3024    o Updated verification/carbon/
3025      - #define GM_VISBECK_VARIABLE_K
3026      - GM_taper_scheme    = 'ldd97'    
3027    
3028    checkpoint46n_post
3029    Merging from release1_p8:
3030    o verification/natl_box:
3031      updating new external_fields_load routine
3032    o New package: pkg/seaice
3033      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
3034      The sea-ice code is based on Hibler (1979-1980).
3035      Two sea-ice dynamic solvers, ADI and LSR, are included.
3036      In addition to computing prognostic sea-ice variables and diagnosing
3037      the forcing/external data fields that drive the ocean model,
3038      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
3039      The implied surface heat flux is then stored in variable
3040      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
3041      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
3042      non-local transport term.  Because this call precedes model
3043      thermodynamics, temperature under sea-ice may not be "exactly" at
3044      the freezing point by the time theta is dumped or time-averaged.
3045      N.B.: fairly large differences in accuracy occur across
3046            different platforms/compilers; comparison between
3047            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
3048            generated output gives:
3049       T           S           U           V
3050      C D M    c        m  s        m  s        m  s        m  s
3051      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
3052      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
3053      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
3054    
3055      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
3056    o GAD:
3057      - generated new common blocks to account for call of
3058        same gad routines with differing traceridentities
3059        (needed to modify tracerIdentity indices in GAD.h)
3060      - generated separate common blocks for case useCubedSphereExchange
3061        (Department of Futurology)
3062      - parameter lists to gmredi_?transport: added tracerIdentity
3063      - added new key indices to tamc.h
3064    o external_fields_load:
3065      - added this routine to TAF list
3066      - needed to make some common blocks global and additional storing
3067        along the same lines as exf package (checkpoint_lev?_directives.h)
3068    o exf:
3069      updated external forcing package
3070      - bug fixes carried over from ecco-branch
3071        (missing OBCS_OPTIONS.h in two routines)
3072      - enable easy to use "no forcing".
3073      - added exf I/O for atmospheric loading
3074      - added exf I/O for runoff data
3075      - transfered scaling between exf <-> MITgcm to exf namelist
3076    o Adding new verification experiment global_with_exf.
3077      This verification experiment is almost identical to the
3078      global_ocean.90x40x15 experiment, except that it uses
3079      the exf (and cal) package instead of the
3080      external_fields_load routine (cf README file).
3081    
3082    checkpoint46m_post
3083    o modified testscript to return -- when there are no lines of "%MON" output
3084    o added new flag "quasiHydrostatic" for QH mode
3085      and new routine quasihydrostaticterms()
3086    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
3087      New routine: mom_u_coriolis_nh()
3088    o fixed sign of non-hydrostatic metric terms in u and v equations.
3089      Depend on correct sign of gravitySign.
3090    o added work.pc* to .cvsignore in aim directories using ifc
3091    o introduced flag for controllin non-hydrostatic metric terms
3092  o removed gravitySign from PARM04  o removed gravitySign from PARM04
3093  o switched to g77/ifc from pgf77 in aim experiments  o switched to g77/ifc from pgf77 in aim experiments
3094    

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