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revision 1.121 by heimbach, Tue Jan 21 19:44:45 2003 UTC revision 1.933 by dimitri, Tue Jan 8 10:39:30 2008 UTC
# Line 1  Line 1 
1  $Header$  $Header$
2    $Name$
3    
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    o added verification/seaice_obcs both to test seaice open boundaries
8      and to provide an example matlab scrpt for generating them
9    o added verification/lab_sea/input.salt_plume for testing pkg/salt_plume
10    o pkg/salt_plume: clean up salt_plume_frac.F to
11      remove redundancy in PlumeMethod 1 and 4
12    o pkg/kpp: added saltplume diagnostics
13    o pkg/obcs and pkg/seaice:
14      - do not set uice and vice to zero when OB*icefile are unspecified
15      - OBCS_SEAICE_AVOID_CONVERGENCE is undefined by default
16      - moved seaice tracer obcs after call to seaice_growth
17    o pkg/salt_plume: added various options for salt plume depth
18      criterion and for vertical distribution of the salt
19    
20    checkpoint59l
21    o pkg/ptracers: new version of ptracers pickup:
22      read meta file and write only fields which are needed to restart.
23      ( same logic as main pickup file ; also using pickupStrictlyMatch )
24    o pkg/seaice:
25      - add timescale for melting due to warm mixed layer as a means of
26        setting SEAICE_availHeatFrac more conveniently
27      - add a CPP-flag/runtime parameter check for flooding algorithm
28      - reformulated availHeat in seaice_growth.F to be independent of AREA
29    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
30      unit changes
31    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
32    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
33      SX vector computer.
34    o pkg/seaice:
35      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
36        seaice forcing fields can now be read only through pkg/exf
37      - removed some unused halos
38    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
39    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
40      or U/VICE from U/VWIND before computing U/VSTRESS
41    
42    checkpoint59k
43    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
44      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
45    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
46      all experiments pass when compile with un-initialised var. checking option.
47    o added pkg/salt_plume
48    o script to test restart (for now, in MITgcm_contrib/jmc_script)
49    o pkg/seaice: new read/write pickup version.
50      read meta file and write only fields which are needed to restart.
51      ( same logic as main pickup file ; also using pickupStrictlyMatch )
52    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
53    o lab_sea.hb87: modify the domain & update output.hb87.txt :
54      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
55      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
56      process. Fixed here by closing the domain at the Northern boundary.
57    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
58    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
59      a set of consecutive levels in/from a 3-D array.
60    o pkg/ptracers:
61      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
62      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
63    
64    checkpoint59j
65    o in pkgs: dic, obcs, offline, rbcs:
66      standard way to compute coeff. for time interpolation between 2 time reccords
67      which retains full precision (& make results less dependent on compiler).
68      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
69    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
70      packages instead of reading ice cover and wind speed separately
71    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
72     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
73      to allow to compile customized code before the update)
74    o cleaning-up:
75      - fix CPP instruction syntax in pkg/obcs
76      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
77        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
78      - fix some threads issue in IO parts.
79    o pkg/dic:
80      - add tons of "_d 0" (--> much better testreports !)
81       and then update outputs of tutorial_global_oce_biogeo
82    o pkg/mom_fluxform:
83      add a special version of momentum advection intended to conserve momentum
84      next to a bathymetry step or a coastline edge. (default = off = #undef)
85    o new read/write pickup version:
86      - for now, only implemented for main (mdsio) pickup file.
87      - write out only what is needed to restart; merge pickup_nh , pickup_ph
88        and main pickup together.
89      - read meta file; read only what is needed to restart; stop if a field
90        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
91        if it make sense (even if the restart is not perfect).
92      - if no meta file, assume that pickup to read corresponds exactly to
93        a pickup that would currently be written.
94      - read pickup written in the old format (until checkpoint59i) if it
95        recognizes an old meta file (no field-list).
96      - add a meta file in exp. which starts from a pickup: 2 cases:
97        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
98         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
99        b) a meta file describing the content of the associated pickup file
100         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
101    o pkg/mdsio & pkg/rw:
102      - new routine to read a meta file ; new set of routine to read
103        Multiple-fields file (with meta file).
104    o added open boundary conditions capability for seaice
105        HSNOW, HSALT, UICE, and VICE
106    
107    checkpoint59i
108    o adjoint:
109      * fix multiDimAdvection adjoint
110        (partial recomputation problem by TAF for fVerT(:,:,kDown)
111        and comlev1 size definition (maxpass vs. max. number of tracers)
112      * verification/global_ocean.90x45x15 adjoint now tests
113        NLFS and multiDimAdvection using DST3 (=30)
114      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
115    o pkg/kpp: add "_d 0" to real constant (if missing);
116      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
117      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
118    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
119      for internal parameters related to restart process (formerly from PARAMS.h)
120      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
121    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
122      as argument. (only atm2d & obcs write_pickup have not yet been updated)
123    o pkg/monitor:
124      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
125      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
126      - account for deep Atmosphere factor and density factor (anelastic)
127    o added open boundary conditions capability for seaice HEFF and AREA
128    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
129      thermodynamics
130      - requires a little reorganization, which affects the testreport results
131        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
132        so that now the conservative form is tested
133      - add a few comments
134    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
135    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
136    o add new diagnostics to seaice: advective, diffusive fluxes (only for
137      multidim-advection, for scheme 2 they are not filled) and transports,
138      thermodynamic growth rates
139    o change units of EmPmR (inside the code, + within coupling interface)
140      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
141      Affects results @ truncation level (cg2d match) and update output of
142       experiments: lab_sea(6), global_ocean.90x40x15(10),
143      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
144      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
145      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
146      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
147    
148    checkpoint59h
149    o pkg/exf:
150      - improve vectorization by moving if-statement out of loops in
151        exf_mapfields, exf_radiation
152      - exf_bulkformulae.F: introduce 2D fields and vectorize code
153    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
154    o testreport:
155      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
156        monitor & update offline_exf_seaice exp. output.
157      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
158    o pkg/seaice:
159      - bug fix in the evp solver: boundary conditions were affected be
160        masking of zMax/zMin (changes results)
161      - minor bug fix in boundary conditions in seaice_calc_strainrates
162        (changes results for no_slip)
163      - seaice_lsr.F: make interpolation of eta dependent on boundaries
164      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
165      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
166        stress formulation and no-slip boundary conditions
167    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
168      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
169    o pkg/seaice: a first HSALT time stepping equation has been checked in
170    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
171      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
172      without requiring DO-IF statements
173    o pkg/thsice:
174      use continuous power-law function for partition of energy between lateral
175      melting/freezing and thinning/thickening ; old code using step function
176      still available with #undef THSICE_FRACEN_POWERLAW
177      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
178    o testreport: change AD testing : check against results/output_adm.txt
179      using same scripts as for forward test.
180    
181    checkpoint59g
182    o adjoint testing: in preparation for changing testreport:
183      - output format: cost and grad written on separated lines
184      - ad output results in directory "results" (instead of "results_ad")
185    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
186    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
187    o pkg/ecco: allow user defined cost function contributions
188    o testreport:
189      Allow to choose (per experiment) the list of tested output variables
190       and the main variable (used to issue a pass/FAIL ) ;
191      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
192      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
193      Also modify printing of summary:
194       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
195       b) echo the list of tested variables in the individual summary.txt of
196          each experiment.
197    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
198      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
199      (but still depend on the tile decompostion of the domain).
200    o pkg/seaice: change a discretization detail to make the B-grid code
201      "more symmetric". This change is likely to remove all "ridges/leads" that
202      where quasi-aligned with the grid in B-grid solutions. It may also be
203      the solution to the stress coupling issues with the B-grid.
204    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
205      remove .cvsignore from input dir. (since testreport no longer run here).
206    o pkg/thsice:
207     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
208     - fix reshaping of sea-ice just after advection:
209       melt all the ice only if ice-volume is too small.
210     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
211       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
212     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
213    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
214      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
215    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
216      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
217      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
218      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
219      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
220      -> update output.txt
221    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
222     this affects truncation error: -> update output.txt of exp:
223      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
224      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
225    
226    checkpoint59f
227    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
228    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
229      a bounded range (in forward mode)
230    o pkg/ecco, ctrl, autodiff and mom_common:
231     internal parameter controls, completements of implementations
232    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
233    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
234      (not seem any difference in testing results).
235    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
236       at face corners.
237    o pkg/generic_advdiff:
238     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
239      loop range indices for computing vertical advection tendency
240      and do the calculation in the interior only (no overlap) ;
241      for now, only implemented for SOM advection (to save CPU time).
242     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
243    o exch2 adjoint
244      First set of changes:
245      - add exch2 hand-written adjoint templates
246      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
247        This will require cleanup in pkg/autodiff/*.F
248        (changed routines currently kept separate in verif. code/)
249      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
250        that used to hide exch2 or cubed-sphere specific code
251        (commented via 'cph-exch2')
252    o pkg/seaice
253      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
254    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
255       output of global_ocean.cs32x15.thsice .
256    
257    checkpoint59e
258    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
259      for B-grid vector (not yet tested) and C-grid vector (<- only used
260      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
261    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
262      (#ifdef ALLOW_SALT_PLUME)
263    o gather_2d/scatter_2d: removed halo regions
264    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
265      scheme and the corresponding test case (under front_relax dir). For now,
266      only available with Skew-flux form and not yet tested in realistic set-up.
267      adjoint: store directives updated, but gradient checks deteriorated,
268      so maybe GM/Redi adjoint is now broken.
269    o seaice adjoint
270      * add AREA, HEFF, HSNOW as control variable
271        (should not change lab_sea results)
272      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
273    o pkg/seaice:
274      * added computation of saltFlux in seaice_growth;
275        For time being, sea ice salinity is assumed constant
276        contribution of snow flooding to freshening of sea ice is neglected.
277        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
278        defaults to 0.0 in order to maintain backward compatibility.
279        Typical values for SEAICE_salinity are 4 to 10 g/kg.
280      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
281      * added SEAICE_availHeatFrac, which specifies fraction of surface level
282        heat content used to melt or grow ice
283      * commented out cap of HICE: it helps keep ice thinner
284      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
285      * applied OBCS T/S mask to HEFFM sea ice mask
286    
287    checkpoint59d
288    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
289     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
290     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
291    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
292     and change default value of parameter "GM_Small_Number";
293     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
294       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
295       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
296    o pkg/ecco: cost function when applying pkg/smooth to controls
297    o pkg/ctrl: add forcingPrecond run time parameter
298    o pkg/seaice:
299     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
300     - fix bug in metric terms of u-equation in LSR solver (implicit part),
301       changes verification/lab_sea
302     - rearrange implicit part of u-equation in LSR solver to make it easier to
303       read, understand, and debug. This causes changes at the truncation level.
304     - fix (serious) bug in the boundary conditions (sign error in the implicit
305       part) of the LSR solver. Changes all LSR results.
306     - fixed problem with HSNOW initialization to avoid thick snow when AREA
307       is initilized with small values - does not change lab_sea results.
308     - added HsnowFile initialization capability
309    o pkg/smooth: addition to model/src and pkg/ctrl so allow
310     initialization of pkg/smooth and application to control vector
311    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
312    o dependencies: pkg/profiles requires pkg/cal
313    o pkg/profiles:
314     - added option ALLOW_PROFILES_GENERICGRID
315         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
316         that interpolation information (grid points and coefficients) is provided
317         within the netcdf input files.
318         -> sample matlab scripts can be found in MITgcm_contrib/gael
319         that allow you to prepare netcdf input files.
320     - also modified: cleaner include statements, cleaner error print statements,
321       cleaner stops when error, and more tests of the netcdf input files consistency.
322    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
323    o pkg/seaice:
324     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
325       requires a new routine: seaice_diagnostics_fill.F
326     - make sure that seaice does not move if not forced (pressure replacement
327       method, Hibler and Ip, 1995), changes results
328     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
329     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
330       It is turned off by default (=-1.), because it changes the results.
331     - make it possible to read AREA from a file, too.
332    
333    checkpoint59c
334    o add S/R and diagnostics for oceanic mixed-layer depth
335    o move GMRedi call after all vertical mixing schemes (including KPP)
336    o pkg/thsice:
337     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
338      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
339    o pkg/obcs:
340     - bug fix for balance code
341    o pkg/seaice:
342      - allow values of SEAICE_elasticParm > 1
343      - add new parameter SEAICE_evpTauRelax as an alternative
344        to SEAICE_elasticParm
345      - make lsr boundary conditions free slip (by default), changes result
346      - add code for no slip boundary conditions for lsr
347      - set minimum of zeta to zero (and not 4e8) (changes results)
348      - add a cap on AREA after advecting AREA if seaice_growth is not called
349    o change calculation of Visbeck K:
350      - no longer depend on tapering scheme; instead, compute slope (limited
351        by GM_maxSlope). this is equivalent to what was comuted before with
352        clipping or linear tappering.
353      - fix vertical averaging (wrong by 1/2 level)
354      - leave the old version (but will not be maintained) within
355        #ifdef OLD_VISBECK_CALC / #endif
356      - update output of exp. ideal_2D_oce
357    o change error catch in calc_r_star to improve vectorization
358    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
359      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
360    o adjoint:
361      Re-organized adjoint checkpointing according to Matt Mazloff
362      (but with modifs/completions/cleanups)
363      Storing is now bundled into large arrays to optimized I/O
364      (and second step in cleanup of the_main_loop)
365    
366    checkpoint59b
367    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
368      - export/import (between ocean & coupler) fields needed for ocean DIC.
369    o pkg/seaice:
370      - get rid of three more exchanges seaice_calc_viscosities (required
371        different loop boundaries in seaice_lsr and seaice_ocean_stress)
372      - bug fix in seaice_ocean_stress (update of lab_sea required)
373      - reduce loop boundaries to necessary minimum also in seaice_evp
374      - go back to the old way of computing deltaC/Z as the adjoint likes that
375        better
376    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
377      passive tracer to an Age Tracer) + update output.txt
378    o pkg/exf:
379      - implement A-grid / C-grid selection for wind-stress input files.
380      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
381      for now, in exf_bulk_largeyeager04.F only :
382      - change implementation for case where windspeed + 2. components wind-stress
383        are read-in. AND use rhoConstFresh to convert evap.
384    o pkg/seaice:
385      - use correct EXCH_UV for wind-forcing (on A-grid).
386      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
387        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
388    o pkg/exf:
389      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
390      EXF_INTERPOLATION:
391      - merge global_with_exf/code version of exf_interp_read.F
392        to the main code ;
393      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
394        reading the file ; Important: This options needs to be defined to recover
395        previous code.
396        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
397      - no longer loose real*8 precision along the way when using exf_iprec=64.
398    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
399      - change discretisation of evp-solver in order to avoid another exchange
400        (changes lab_sea) and clean up a little
401      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
402        help the adjoint (this also changes the results slightly)
403      - add a few "_d 0" where they had been missing in seaice_evp.F
404      - cleaning up: remove unused seaice_calc_rhs.F
405    o pkg/exf: some cleaning-up:
406      - change various "constants" into runtime parameters
407      - cleaned-up Large&Yeager04 routine which should eventually
408        replace exf_bulkformulae.F (changed names of S/R and CPP)
409        and merged various ALLOW_ATM_WIND options
410     only used with thsice pkg (in thsice_get_exf.F):
411      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
412        which are used when useStabilityFct_overIce=TRUE (= the default)
413      - change default values of ice & snow emissivity and scale downward LW
414        by ice & snow emissivity.
415    o pkg/thsice:
416     fix few little problems, in thsice_calc_thickn.F:
417      - growth vertically (and not laterally) if iceFrac == iceMaskMax
418      - melt only laterally if hIce < hThinIce (as the comments say)
419      and in thsice_extend.F:
420      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
421      - start to form ice as soon as the minimum ice-volume is reachable.
422     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
423      and cpl_aim+ocn
424    o pkg/kpp
425     - move computation of surface related input fields to KPP into a new
426       subroutine kpp_forcing_surf.F
427     - remove wrong (within bi,bj loops) EXCH calls.
428     - little cleaning (add argument myThid in last position, cvs header ...)
429     - for now, fix conservation problem by exchanging KPPviscAz (may not
430       be the best fix)
431    o pkg/seaice
432     - check for inconsistent evp parameter/cpp-flag combination
433     - remove leftover errIO flat for obsolete name list error handling
434    o OpenAD
435     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
436    
437    checkpoint59a
438    o pkg/seaice: some parameter clarifications and a little bit of clean up
439    o pkg/thsice: rename run-time parameters:
440       himin       -> hIceMin
441       himin0      -> hThinIce
442       hihig       -> hThickIce
443       i0          -> i0swFrac
444       transCoef   -> bMeltCoef
445       frac_energy -> fracMelting
446      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
447       with default values (for now) that do not change the results.
448      remove old version of thsice vars advection in pkg/seaice.
449    o in FFIELDS.h:
450      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
451      - make pLoad & sIceLoad always available (but still only used if
452         ATMOSPHERIC_LOADING is #define).
453    o pkg/kpp: replaced _KPP_RL with _RL
454    o bug fixes for vertical diffusivity computations when both KPP and
455        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
456        are no longer updating the vertical diffusivity array
457        (passed as argument) but are (re-) setting those arrays.
458    o pkg/seaice: fix bug in evp solver, while doing that
459      - change (improve?) discretization of stress computations for both
460        cgrid-lsr and evp solver
461      - add a new routine to compute strain rates
462      - the above changes lab_sea results
463      - add no slip conditions for evp solver (off by default), lsr-version
464        may follow
465      - fix exchange for shear at Z-points (does not change lab_sea)
466      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
467        (to force the user to pick a time step since there is not "safe" way
468        of choosing it)
469      - add principal stress diagnostics
470      - rearrange fields for evp a little to avoid having to call a: too many
471        exchanges and b: exchanges for stress trensor components which we do
472        not have.
473      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
474        of evp, complete rewrite for lsr case (latter is does not yet work
475        in all cases)
476    o pkg/kpp: add code to have mixing in shelf ice caverns
477      - add myThid to all kpp routines (long overdue)
478    
479    checkpoint59
480    o pkg/exf:
481      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
482        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
483      - move exf header files from lower_case.h to UPPER_CASE.h ;
484        add missing cvs Header & Name
485      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
486      - add namelist param. selectStressGridPosition, exf_monFreq
487      - retire many _CLIM routines, and remove data.exf_clim
488        + params moved to data.exf
489        + climsst, climsss now handled by exf_set_gen, i.e.
490          climss?period=0 refers to constant field,
491          climss?period=-12 to monthly forcing
492      - split up namelists in data.exf
493    o pkg/seaice:
494      - remove seaice_exch and seaice_exch_uv
495      - remove superfluous exchange of theta
496      - add myThid to seaice_budget_ocean/ice
497      - add new interface for atmospheric wind forcing (C-grid only)
498        + new routine
499        + two new field (taux, tauy for stress over ice)
500        + removed one global field (DAIRN) for C-grid case only
501    o pkg/thsise
502      - 2nd set of modifs for thsice adjoint in conjunction with exf
503    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
504    
505    checkpoint58y_post
506    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
507      vertical diffusivity, similar to that in MOM4; turned on using
508      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
509      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
510    o Added capability for 3D specification of background vertical diffusion
511      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
512      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
513      "data" file that contains the 3D vertical diffusivity coefficients.
514    o ice dynamics (pkg/seaice) with thsice thermodynamics:
515      - add code within pkg thsice to advect & diffuse sea-ice fields
516      similar to (and will replace) what has been added in  seaice_advdiff.F,
517      but: - conserving Mass, Heat & Salt.
518           - better when using non-linear advection scheme (not yet fully tested)
519           - can also be used in atmospheric set-up (for now, only the diffusion).
520    
521    checkpoint58x_post
522    o IO option for global-file compact format:
523      - add options when generating topology (utils/exch2/matlab-topology-generator)
524      - add I/O capability (pkg/mdsio).
525      - adapt utils/matlab/rdmds.m to read this format.
526      for now long-line format not yet supported by pkg/mdsio (& exch2).
527    o shelfice: add a few diagnostics
528    
529    checkpoint58w_post
530    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
531      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
532      (and replace horiVertRatio in NH code).
533      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
534                         and tutorial_plume_on_slope (sensitive to truncation)
535    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
536      directly to drive seaice model (C-grid only)
537    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
538     - reintroduce computation of wind from stress,
539     - compute tau (in exf_bulkformulae.F) from windstress averaged to
540       mass points to avoid tau = 0
541     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
542    o rdmnc.m: make it work with "global" files created with gluemnc
543    o rdmnc.m : some improvements in dealing with singleton dimension
544      (tested on all testreport mnc output files).
545    o genmake2: disable pkg/profiles if netcdf test fails.
546    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
547    o move call to cal_readparms up to make calendar parameters/variable available
548      to all packages
549    
550    checkpoint58v_post
551    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
552      useDynP_inEos_Zc tested.
553    o pkg/exf: changes to properly interpolate/mask/scale initial fields
554    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
555      and portions thereof.  See read_cs.txt for description and examples.
556    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
557      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
558      following the great-circle arc between those 2 points.
559    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
560      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
561    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
562     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
563     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
564     - still needs work (not working with some options ; efficiency to improve)
565       and serious testing.
566     - use this scheme for temperature & salinity in 2 advection test exp.:
567       advect_xy & advect_xz, respectively.
568    
569    checkpoint58u_post
570    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
571    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
572    o testreport: add option "-skipdir" to skip some test.
573    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
574      momentum calculation.
575    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
576    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
577      remove checkpoint.F and the_correction_step.F (no longer used);
578      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
579    o add option (linFSConserveTr) to correct for tracer source/sink due to
580      Linear Free surface
581    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
582    o pkg/thsice: fix reading mnc-pickups
583    
584    checkpoint58t_post
585    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
586    o pkg/mdsio:
587     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
588       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
589       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
590     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
591     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
592       either MDS_READ_FIELD or MDS_WRITE_FIELD )
593     - new S/R (to replace MDSWRITEMETA), which allows to write more
594       informations (variable names, time ...) to meta files.
595     - modify rdmds.m to give back the meta file content.
596    o pkg/diagnostics: change vertical interpolation to be safer, and more
597       flexible (define p-levels to interpolate to in data.diagnostics);
598      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
599       diagnostic pointer.
600    o pkg/seaice: more cleaning up of seaice_growth, added many comments
601    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
602    o fix multi-category seaice:
603     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
604       SEAICE_MULTICATEGORY
605     - fix short wave heat flux
606    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
607       and allow to use EVP solver. Change forward lab_sea: test both EVP
608       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
609    o Initial check-in of lab_sea adjoint
610      (very similar to natl_box_adjoint/code_seaice)
611      * used C-grid and EVP solver
612      * used KPP, GM/Redi
613      * uses inAdExact=.TRUE.
614      * gradient checks fail for both ADM and TLM
615        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
616        f.d. gradients actually seem more problematic than ADM, TLM gradients;
617        issue is related to forward mismatch between g77 an ifort
618    o pkg/seaice: overhaul of thermodynamics
619     - growth.F and groatb.F are replaced by new routine seaice_growth.F
620     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
621     - move a few global fields out of SEAICE.h into seaice_growth.F and
622       make them 2D (FICE/QNETO/ ...)
623     - remove FO (it is the same as QNETO)
624     - introduce a few local fields to avoid modifying external fields such
625       as atemp, etc.
626    
627    checkpoint58s_post
628    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
629      changed exf_set_gen.F so that
630        genperiod=0 means input file is one time-constant field and
631        genperiod=-12 means input file contains 12 monthly means
632    o CG2D: use pre-computed solver main-diagonal (stored in common block);
633      this affects truncation error ; generate new output file for exp. which
634      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
635        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
636        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
637        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
638        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
639        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
640    o start implementation of deep-atmosphere and anelastic formulation
641    o verification: remove 2nd copy of input files and use script "prepare_run"
642      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
643    o mom_common/vecinv/fluxform: fix a few initialisation isssues
644    o profiles: fix for multithreaded case
645    
646    o diagnostics: rename few diags:
647      s/'PRESSURE'/'RCENTER '/g
648      s/'TICE    '/'oceFreez'/g
649      s/'TAUX    '/'oceTAUX '/g
650      s/'TAUY    '/'oceTAUY '/g
651      s/'SWFLUX  '/'oceQsw  '/g
652      s/DIFx/DFxE/g
653      s/DIFy/DFyE/g
654      and add few ocean-forcing diagnostics:
655      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
656    o modifications to pkg/seaice/growth.F and budget.F, which change results of
657      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
658      as actual snow thickness.  It now refers everywhere to effective snow
659      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
660    
661    checkpoint58r_post
662    o modifications to pkg/seaice/growth.F, which change results of
663      lab_sea experiment: fixes pertain to melting snow over open water, to
664      masking EVAP under sea ice, and to using the correct AREA variable for
665      computations of EVAP, PRECIP, HSNOW, and GHEFF
666    o add ability to read bathy, salt, and theta using MNC (off by def)
667    o add flooding algorithm and advection of HSNOW for pkg/seaice;
668      both are turned off by default and do no change any results
669    o seaice advection with pkg/thsice: a step toward the use of non-linear
670      advection scheme, but #ifdef or commented out for now (requires more EXCH).
671    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
672      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
673      in natl_box (affects results @ truncation level: update output.txt)
674    o multi-threading and IO:
675      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
676      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
677        (needed to work with SingleCpuIO): tested in all verif. exp.
678    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
679      affects the results (but none of the verification test uses this scheme).
680    o Adding some pkg/diagnostics capability to pkg/seaice
681      (will certainly be subject to changes)
682    o ctrl: adding new control variables:
683      lwflux, lwdown, evap, snowprecip, apressure, runoff
684    
685    checkpoint58q_post
686    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
687      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
688      high_res_cube configuration by 4% on Columbia.
689    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
690      add (in global_with_exf/code) a version of EXF_INTERP_READ without
691      dynamical allocation (seems to work in multi-threaded).
692    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
693      single CPU io) so that TAF does not have to see EESUPPORT.h
694    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
695    
696    checkpoint58p_post
697    o obcs: stop if obcs is used with useCDscheme = .true.
698    o shelfice:
699     - fix a sign error so that no slip at shelfice interface works
700     - remove stop for combination non-hydrostatic code and shelfice. That does
701       not mean, that the results are correct, but at least they are numerically
702       stable
703    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
704    o added adjoint exch routined for all exch*3d* routines
705      and updated flow directives
706    
707    checkpoint58o_post
708    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
709      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
710    o change controling S/R for writing pickup file (new S/R do_write_pickup)
711      and clean-up reading/writing of pickup files.
712    o fix local version of read/write pickup (NH part) in rotating_tank/code
713    o simplify EXCH interface:
714     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
715     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
716    o added the regrid package
717    o shelfice:
718     - add a simple boundary layer scheme to reduce noise
719     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
720    
721    checkpoint58n_post
722    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
723       local variable (not in common block).
724    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
725      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
726      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
727        to work with SingleCpuIO.
728    o add "_d 0" to real constant of pkg/cfc subroutines ;
729       update exp. cfc_exemple & tutorial_cfc_offline output files.
730    o multi-threading and IO:
731      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
732        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
733      - barrier before and after reading.
734      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
735      - avoid using MDS_WRITELOCAL for LAND pkg output.
736      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
737        common-block variables ; Allows multi-threading with master-thread IO.
738    o change default MAX_NO_THREADS from 32 to 4 ;
739      and stop cleanly when MAX_NO_THREADS is too small.
740    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
741    
742    checkpoint58m_post
743    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
744       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
745    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
746       keep global_ocean.90x40x15 (for AD testing) with former secondary test
747       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
748    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
749        add MITgcm_tutorials (= code + all the tutorials)
750    o ecco, option to compute cost for total ssh (mean+anom)
751    o consistent with addition of ptracer and ssh in pkg/profiles
752    o profiles: adding ptracer and ssh
753    o testreport: change multi-test output-file name
754      (from output.txt.{name} to output.{name}.txt)
755    o profiles: now ok for mutli-tiles case
756    o seaice: add 4 parameters for different advection schemes for area,
757      (effective) seaice thickness, enthalphy, and snow height. Their default
758      is the standard parameter SEAICEadvScheme
759    o calc_gw:
760     - add cosFacU in zonal viscous flux (harmonic.visc.).
761     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
762       of tutorial_plume_on_slope.
763    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
764    o calc_gw: true flux-form, account for horizontal grid spacing.
765      update rotating_tank results, but not plume_on_slope (affected at
766      truncation level, 11 digits).
767    
768    checkpoint58l_post
769    o calc_gw:
770     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
771     - remove side-drag for now (need to fix it); update plume_on_slope results.
772     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
773    o commit code to make SST/SSS weights spatially variable
774      (based on either variable in-situ or variable initial T/S weights)
775    o pkg/ecco:
776      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
777        now based on horizontally varying weights wthetaLev, wsaltLev
778      * cost_averagesflags now returns year indices in addition to day, month
779      * sflux balance is performed on annual basis
780        (sflxumm, sfluxmm2, bal_sfluxmm)
781      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
782        including separate counting and multipliers
783    o pkg/rbcs
784      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
785    
786    checkpoint58k_post
787    o testreport:
788     - always build in dir. "build" (if not there, mkdir build instead of building
789       & running in input)
790     - run in dir run (if it exists), in build otherwise.
791     - call prepare_run (if input/prepare_run exists)
792     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
793    o pkg/exf modifications to interpolation and rotation routines for more
794       reasonable treatment of North Pole singularity: for tracers North Pole
795       value is set to northernmost zonal-mean value, for zonal velocity it is
796       set to zero, and for meridional velocity it is set to northernmost value.
797    o pkg/exf/exf_check_range.F
798     - add tile index to diagnostics and move stop statement to the very
799       end of the routine.
800    o pkg/diagnostics: (diagnostics_main_init.F)
801      define title of isomorphic variables according to the current config.
802    o pkg/thsice with pkg/seaice dynamics:
803    - fix domain of computation (interior only, required for exf) and do exchanges
804    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
805    o towards a standard way of dealing with multi-threading in MONITOR
806      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
807    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
808       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
809    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
810    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
811    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
812       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
813    o tracer advection:
814     - clean-up and simplify calc_common_factors.F
815     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
816       advection subroutine (but still not used within DST advection S/R)
817    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
818    
819    checkpoint58j_post
820    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
821      from file (collects calls previously in FORWARD_STEP)
822    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
823    o adjoint store dir. adjusted accordingly
824    o genmake2
825      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
826    
827    checkpoint58i_post
828    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
829      on wind stress (SEAICEstressFactor defaults to 1.)
830    o Total number of Timers is finite (<=40): comment out 2 non-essential one
831      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
832    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
833      on CS-grid: no longer loosing mass.
834    o exf & curvilinear-grid: no longer modify longitude xC & xG.
835    o pkg/ggl90: fix sloppy output and fix a bug
836    o pkg/seaice: added SEAICEuseEVPpickup parameter
837      - Set to false in order to start EVP solver with
838        non-EVP pickup files when using SEAICEuseEVP
839      - fix sign error in diffusion in seaice_calc_rhs
840    
841    checkpoint58h_post
842    * Modifications for bottom topography control
843      o replace hFacC by _hFacC at various places
844      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
845      o add non-self-adjoint cg2d_nsa
846      o update autodiff support routines
847      o re-initialise hfac after ctrl_depth_ini
848      o works for 5x5 box, doesnt work for global_ocean.90x40x15
849    * Adding verification for 5x5 box (4-layer) bottom topography control
850    
851    checkpoint58g_post
852    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
853       used for mean seasonal cycle, mean diurnal cycle); add an example
854       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
855    o pkg/ggl90:
856      - add parameter (minimum surface kinetic energy)
857      - fix bug (avoiding division by zero)
858    o couple pkg/thsice to pkg/seaice:
859      - modify advection in seaice to accomodate new scalar fields to be advected
860      - only muliDimAdection scheme work with seaice/thsice
861      - mapping of thsice-variables to seaice-variables, back and forth
862      - does not break the verification experiments, but does not give the
863        desired results either
864    o pkg/seaice
865      - make (default) second order advection a bit less confusing?
866    
867    checkpoint58f_post
868    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
869      to pkg/seaice):
870      - new routines thsice_map_exf and thsice_get_exf provide the interface
871      - add an additional formal parameter to thsice_solve4temp
872    o pkg/exf:
873      - add new fields wspeed, snowprecip (to be able to couple to thsice)
874      - correct Stefan-Boltzmann constant
875      - new parameter for longwave surface emittance
876      - separate some stuff from exf_bulkformulae into new routines  
877        exf_radiation, exf_wind
878      - add new parameters and constants: longwave emissivity for ocean, ice
879        and snow, evaporation parameters over ice
880      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
881        either wind from stress or stress from wind
882    o pkg/thSIce:
883    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
884    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
885       and THSICE_CALC_THICKN
886    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
887    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
888      to make debugging easier.
889    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
890    o pkg/bulk_force:
891      - clean-up comments and parameters ;
892      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
893    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
894      generate new output for test-experiment: aim.5l_cs.thSI
895    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
896      testreport accordingly
897    
898    checkpoint58e_post
899    o SEAICE_CGRID adjoint done
900    o R_STAR adjoint implemented.
901      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
902      * need to sort out init. of h0facc, etc.
903    o Make pkg/profile fully independent of ecco,cost, etc. stuff
904      to be able to use it in pure forward.
905    
906    checkpoint58d_post
907    o upgrade simple test-experiment to tutorial example:
908     step.1: duplicate the experiment and (step.2) will remove the old copy.
909      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
910      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
911      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
912      tutorial_global_oce_biogeo    <- copy of dic_example
913      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
914      tutorial_plume_on_slope       <- copy of plume_on_slope
915      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
916      tutorial_global_oce_optim     <- empty for now (David ?)
917      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
918     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
919    o correct a sign problem in cost_scat.F
920    o obcs and ptracers: fix boundary conditions for advections schemes
921      with larger stencil
922    o thsice adjoint: start
923    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
924      completeness
925    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
926      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
927    o ptracers adjoint:
928      * avoid extensive recomputatations
929      * fix missing re-init. of gptr (missed by TAF)
930    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
931      me to turn off the excessive output to STDOUT that this package produces
932    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
933      and add those terms in Vector-Invariant formulation.
934    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
935      if the control period (xx_hfluxperiod etc) is 0
936    o in profiles pkg, clean routines and fix details
937    o in ecco pkg, reading ssh data:
938      fix problem in case the model does not start at iter0=0
939    o fix mnc-pickup/restart for ptracers
940    o new package prifiles:
941      code to compute profile-based cost by Gael Forget
942      (modifs in ecco, ctrl, autodiff)
943    o Benign bug fix in initialization (spotted by M. Mazloff) of
944      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
945    
946    checkpoint58c_post
947    o adjoint: finish NLFS adjoint and provide reference output in
948      verification/global_ocean.90x40x15/results_ad_nlfs
949    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
950      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
951      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
952      with SEAICE_CGRID defined.
953    o move calendarDumps from "data" to "data.cal" and clean-up the code
954      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
955    o add useEXF & useCAL flags (for now, set in hard-coded way)
956    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
957      (were missing in NH mode, and wrong in quasihydrostatic mode).
958      waiting for Chris updated version of calc_gw to add those CALLs.
959    o fix bug in quasihydrostatic S/R ;
960      add a test for this option: global_ocean.90x40x15.qshyd
961    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
962      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
963    o add on/off flag useOffLine for package OFFLINE
964    o seaice:
965      - modify advection so that it works also on the C-grid
966      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
967        problem in multi-tile runs with C-grid
968      - add flags for clipping ice velocities and/or masking solver forcing
969      - fix drag (ocean on ice) formulation and a bug that caused noise in the
970        C-grid solver
971      - added a few comments to seaice_diffusion.F
972      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
973        are now exclusive)
974      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
975        required re-ordering the code a little:
976       + make DAIRN global variable (defined in SEAICE)
977       + move computation of the viscosities eta and zeta into a new separate
978         routine (because I need to recompute them in seaice_ocean_stress.F)
979    
980    checkpoint58b_post
981    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
982      update output.txt of exp. aim.5l_cs.thSI
983    o various mnc cleanups and improvements:
984      + shrink lookup tables by factor of ~4
985      + better error reporting when running out of lookup space
986      + able to handle longer path/file names (up to 500 chars)
987    o adjoint:
988      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
989      - TBD: "hidden" mom_vecinv recomp. in dynamics
990    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
991     (allow to differentiate between forcing components using new integer flags:
992      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
993     and add new flag to put Dissipation tendency out of Adams-Bashforth.
994    o ecco
995      - enable trend removal from SSH anomaly obs.
996    o adjoint
997      - a fix for PmEpR when #undef EXACT_CONSERV
998      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
999      - try to fix "hidden" recomp. in forward_step for NLFS
1000        (NLFS seems broken sometimes after I checked it in)
1001    o seaice:
1002     - add c-grid version of the dynamic solver:
1003       + three new routines that are the c-grid substitute lsr, dynsolver
1004         and ostres
1005       + put a few fields that were local to dynsolver into global common
1006         blocks, so that I can move the computation of stresses etc into
1007         seaice_lsr (saves coding but may break the adjoint).
1008     - replace more hardwired parameters by runtime parameters
1009     - add ice masks that mask the rhs of the implicit solvers where there
1010       is no ice (commented out in seaice_dynsolver, because i am not sure
1011       if this works properly), eventually this should replace the clipping
1012       of ice velocities in seaice_dynsolver to +/-40cm/s.
1013    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
1014      include it only where its needed
1015    o move balancing of fluxes before the call of external_forcing_surf
1016    o seaice:
1017      - correct units of turning angles (now they are really in degrees)
1018      - move computation of GWATX/Y out of main routine into dynsolver
1019      - initialize GWATX/Y in seaice_init
1020    o Apply mask on Fresh-Water flux (needed for SSH forcing).
1021      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
1022    o seaice: add runtime flags for turning angles (default to zero)
1023    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
1024      and trend from exf forcing and ctrl control adjustments
1025    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
1026      (since checkpoint57x_post)
1027    o change the default rotation period to 86164.s = the Earth rotation
1028    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
1029      and based on a reference stratification. Tested within hs94.cs-32x32x5.
1030    o seaice advection: add code for choosing between the default (2nd order
1031      central differences) and multiDim advection schemes provided by
1032      pkg/generic_advdiff
1033    o seaice:
1034      - removed all references to SEAICE_GRID.h fields from
1035        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
1036        (cubed-sphere configuration will change a little)
1037      - grid computations in seaice_init are obsolete now.
1038      - cleaned up code a little so that is easier to read (hopefully).
1039      - added new (better?) discretizations of default advection and diffusion
1040        (turn on with SEAICEuseFluxForm)
1041      - replace 1 in 3d global fields by kSurface in growth.F
1042      
1043    checkpoint58a_post
1044    o seaice:
1045      - bug fix in advect.F
1046    o shelfice:
1047      - separate shelfice load anomaly from pload (breaks with time
1048        dependent forcing), => introduce constant field shelficeLoadAnomaly.
1049        Its default is 0., but it may be computed more cleverly from (unknown)
1050        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
1051        done offline. A good approximation of the pressure load anomaly is
1052        necessary to avoid large initial adjustment processes underneath
1053        deep-reaching shelfice.
1054      - small fix in ISOMIP shelfice_thermodynamics
1055      - add more sophisticated thermodynamics of Hellmer (1989), this is
1056        now the default
1057      - give a few constants more intuitive names
1058    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
1059      if bulk formulae are used in long integration (especially EmPmR). Turn
1060      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
1061      if balancePrintMean, the imbalance that is substracted is printed to
1062      STDOUT.
1063    o fix bug (typo) in obcs_apply_eta.F
1064    o add a new package shelfice which enables us to model the circulation
1065      underneath shelf-ice with draughts of hundreds of meters.
1066     - works
1067     - to do: + include improved thermodynamics
1068              + check whether kSurfC (from model/inc/SURFACE.h) can be used
1069                instead of new field kTopC
1070              + can we use topoFile, Ro_surf and existing code in ini_depth.F
1071                instead of new field R_shelfIce and new code in ini_depth.F
1072                and ini_mask_etc.F?
1073              + adjust vertical mixing schemes?
1074    o seaice pkg:
1075     - add a cpp-flag to include a simple formula for a salinity dependent
1076       freezing point of sea water at the surface
1077     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
1078       meridional stresses are now different (and hopefully correct)
1079    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
1080       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
1081       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
1082    o pkg/diagnostics: add options and parameters for regional-statistics
1083       diagnostics ; define regions by reading a region-mask from a file
1084       (might add other options later)
1085    o pkg/bulk_force:
1086     - add option and parameters to use AIM surface-flux formulae.
1087     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
1088       others forcing fields (defined in PARM05, parameter file "data") are loaded
1089       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
1090     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
1091     - use the right EXCH call for uwind,vwind (to work on CS-grid).
1092     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
1093       and parameters (note: calcWindStress replaces .NOT.readwindstress).
1094     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
1095    
1096    checkpoint58
1097    o add "--embed-source" option to genmake2 which, when the supporting
1098      tools can be compiled (as determined by genmake2) will turn on the
1099      embed_files package which then embeds the entire MITgcm source code
1100      (*.[fFhc] + Makefile) used for the build within the executable
1101      - requested by CNH but off by default
1102      - adds a paltry <9MB to the mitgcmuv executable in most cases
1103      - only writes the output when useEMBEDSRC in eedata is true
1104    o clean up 3-dim. relaxation codes:
1105      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
1106      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
1107      * Thanks to Tom Haine for testing!
1108    
1109    checkpoint57z_post
1110    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
1111      affects output (@ truncation level) of exp. plume_on_slope ; updated.
1112    o fix the pickup behavior for obcs in combination with ptracers
1113    o fix a bug in ptracers_external_fields_load
1114    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
1115      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
1116    o transfered surface NH pressure to eta field (if exactConserv).
1117    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
1118         and update lab_sea output.txt file.
1119    o completing 3-dim. relaxation code: additional term
1120         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
1121      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
1122      * At compile time, in "EXF_OPTIONS.h" set
1123          #define  ALLOW_CLIMTEMP_RELAXATION
1124          #define  ALLOW_CLIMSALT_RELAXATION
1125      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
1126          tauThetaClimRelax3Dim = 15552000.0,
1127          tauSaltClimRelax3Dim  = 15552000.0,
1128      * 3 cases:
1129          1) Use a constant-in-time 3-dim. field
1130          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
1131          3) Real-time relax. to time-evolving prescribed field
1132    o Adding Laplacian-type smoothness constraint on
1133      initial and boundary (forcing) controls (ic, bc)
1134      * enable at compile-time via
1135        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
1136      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
1137      * Absolute scale somewhat unclear so far
1138      * no area weighting was included since no other cost term does so far
1139    
1140    checkpoint57y_post
1141    First step for a NLFS adjoint
1142    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
1143    o new init. routines for calc_r_star, calc_surf_dr
1144    o still need to deal with ini_masks_etc
1145    o testreport seemed happy
1146    checkpoint57y_pre
1147    
1148    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
1149    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
1150    o add new offset feature to offline pkg (plus minor cleanup)
1151    o cfc fixes for final year of integration
1152    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
1153      be in GCHEM_OPTIONS).
1154    
1155    checkpoint57x_post
1156    o fix testreport Pb in multiple test experiment.
1157    o cleanup our namelist syntax in verification:
1158      - make it more F95 standards compliant (some work still needed)
1159      - allows the vast majority of our tests to work with gfortran
1160    o Non-Hydrostatic:
1161     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
1162     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
1163    o Allow to apply AB on T,S rather than on AB(gT,gS):
1164     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
1165     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
1166       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
1167     - need a "clever" read_pickup to restart from the other AB formulation
1168    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
1169    o remove some unused variables (reduces number of compiler warnings)
1170    o adjoint
1171      * Disable useVariableViscosity for adjoint for time being
1172        (there are a number of extensive recomputations)
1173      * Initialize certain variables needed for adjoint
1174    
1175    checkpoint57w_post
1176    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
1177                 fix the singleCpuIO RS version of MDSWRITEFIELD
1178       and add a WARNING if using globalFiles=T with multi-processors.
1179    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
1180      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
1181    o tracer advection scheme:
1182      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
1183       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
1184       was not very convenient).
1185      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
1186       (further tests needed for the implicit DST & Flux-Limiter schemes).
1187    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
1188      and sRef for convenience, handy, when you want to initialize
1189      ptracers in a large domain with a constant non-zero value. Also,
1190      untangle ptracers_init.F a little.
1191    
1192    checkpoint57v_post
1193    o change dome exp. to use variable viscosity in side-drag terms.
1194    o remove all the files from the cfc_offline test since they are now
1195      incorporated into tutorial_cfc_offline which has been producing
1196      identical results for a few days of testing
1197    o add new parameter: sideDragFactor to enable half-slip-side BC
1198      and change side-drag S/R to use viscosity from mom_calc_visc
1199      (can switch back by setting sideDragFactor=0.); affects results at
1200      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
1201       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
1202    o vorticity & strain are now computed without masking, to account for
1203      no-slip-side BC in variable viscosity calculation ; mask is applied
1204      anyway later on, before computing advection/coriolis terms.
1205    o modify exp4 to test new obcs support for reading from external files
1206      and for passive tracers
1207    o fix behavior of ptracers_monitor when monitor output is written to a
1208      netcdf-file; still not independent of monitor.F (writes in the same
1209      file).
1210    o change default value of tRef (put a uniform, meaningful value for ocean
1211      & atmos) and initialize sRef (was missing, as Martin mentioned).
1212    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
1213      to be proportional to enstrophy dissipation length.  Thus,
1214       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
1215      This is now consistent with Smagorinsky and with the manual.
1216    
1217    checkpoint57u_post
1218    o OBCS and PTRACERS: add open boundary support for passive tracers
1219      - either use homogenous (pseudo) v.Neumann conditions or prescribe
1220        OB-values from file; this is not different from the way theta and salinity
1221        are treated
1222      - however, Orlanski-radiation conditions are not supported, and the model
1223        will stop if you use pTracers and Orlanski at the same time.
1224      - beefed up the rountine obcs_external_fields_load: now only those open
1225        boundary values are overwritten with values from files for which there
1226        are really files, otherwise the OB-fields remain untouched. This makes
1227        it possible to use different OBs at different ends of the domain (as
1228        with EXF)
1229    o reduce number of exch calls in shap_filt (s2).
1230    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
1231      truncation level) 4/5 MLAdjust test results (11&12 digits match).
1232    
1233    checkpoint57t_post
1234    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
1235    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
1236      same truncation, independent of the face number: affects affects several
1237      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
1238    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
1239      note that biharmonic viscosity + no-slip was not tested in any experiment.
1240    o fix bug in non-linear free-surf side-drag ; generate new output for
1241      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
1242    o make mnc honor the writeBinaryPrec flag for most kinds of output
1243    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
1244    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
1245      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
1246    o add brackets in multi-terms sum to get same truncation, independent of
1247      the face number (manage to get exactly same value of gU,gV at the cs-edge)
1248      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
1249    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
1250      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
1251      a maximum grid-scale Reynolds number.  Also, changes all length calculations
1252      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
1253      Suggested values of viscosity parameters found in mom_calc_visc.
1254      Many new viscosity diagnostics available.
1255    
1256    checkpoint57s_post
1257    o Add clearing-house for viscosity calculations, mom_calc_visc and
1258      correct numerous bugs in LeithD and Smagorinsky discretizations.  
1259      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
1260      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
1261      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
1262      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
1263      The Strain-Tension form is now called with useStrainTensonVisc=.true.
1264      ViscAhStrain and viscAhTension are now retired.
1265    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
1266    o In response to JMC's bug report, genmake2 now ignores any soft-links
1267      that it finds in the *current* directory when searching for files.
1268      Soft-links found in any other source directories will still work as
1269      they did before.
1270    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
1271      a C routine to unlimit the stack size
1272    o mnc-ify pkg/aim snapshot vars
1273    o mnc-ify pkg/land as requested by Daniel
1274    o various changes to mnc including:
1275      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
1276      - output can now be grouped so that all files within a group
1277          change the ITER portion of their names in lock-step together
1278      - can now read ("global") PER-FACE (in addition to PER-TILE) files
1279          and works with both EXCH1 and EXCH2 (but needs more testing)
1280      - writing works for all verification test cases w/ g77 on Linux
1281    
1282    checkpoint57r_post
1283    o make MNC variable initialization happen earlier
1284    o add diagnostics for (almost) each term of the momentum Eq.
1285    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
1286    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
1287    o remove MINIMAL_TAVE_OUTPUT option ;
1288      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
1289    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
1290      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
1291    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
1292    o add time-dependent SST, SSS control
1293    o cost terms in ecco/ modularized (new cost_generic.F)
1294    o cost_averages routines are modularized (new cost_averagesgeneric.F)
1295    o new infrastructure for seaice model vs. obs misfits in seaice/
1296      * driver from the_main_loop.F is seaice_cost_driver.F
1297      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
1298      * gradient check in Exp. 6a of natl_box_adjoint/
1299    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
1300      (see README file)
1301    
1302    checkpoint57q_post
1303    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
1304    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
1305      - bug was reported by Jean-Michel and Ian Fenty
1306    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
1307      update exp. cpl_aim+ocn output.
1308    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
1309      Needed for high-res. runs with large global files
1310      to be able to limit tapelev size
1311    o Changed some tests for adjoint:
1312      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
1313      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
1314      * global_ocean.90x40x15/ back to default 3-level checkpointing
1315    o Modifications to enable scripted COMMON to MODULE conversion
1316      * verification/OpenAD/code/ has necessary scripts and description;
1317      * converts, compiles and runs successfully;
1318    
1319    checkpoint57p_post
1320    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
1321    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
1322      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
1323    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
1324    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
1325      (was already the case for dissipation with mom_vecinv,
1326       and also the case for grad.PhiHyd when staggered-timeStep)
1327      This will allow to put dissipation out-off the AB time-stepping.
1328     Unfortunately, affects truncation error. Update output of exp. that "fails"
1329      (cg2d matching number) and leave the others for later: front_relax(10),
1330      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
1331      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
1332    
1333    checkpoint57o_post
1334    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
1335      (2) its ready to be documented during the 20050801 DocFest
1336    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
1337      for ideal_2D_oce and lab_sea on linux_ia32_g77
1338    o set to #undef CTRL_SET_OLD_MAXCVARS_30
1339      in global1x1_tot/code_seaice_adj to access indices 32, 33
1340      (worth another tag)
1341    
1342    checkpoint57n_post
1343    o adding precip control xx_precip 32
1344    o adding swflux control xx_swflux 33
1345    o Replacing 10 forcing penalty cost routines by 1 generic.
1346    o Implementing partitioning in time-mean and variable adjustment
1347      for atmos. state.
1348    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
1349    o in natl_box_adjoint:
1350      * updated exp 1 to 10
1351        (but does not have time-mean vs. variable split results yet)
1352    o updated global1x1/*_seaice_adj/
1353      to incorporate latest changes
1354    o enable useSingleCpuIO for mdsio vector routines
1355      (applies in particular to tapelev I/O)
1356    o removed inefficient K-loop in all active_file*control*.F
1357    
1358    checkpoint57m_post
1359    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
1360      and advect_cs (use EXCH-2 and standard cs-32 grid files).
1361    o pkg/exch2: filling of face-corner halo regions is optional
1362      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
1363    
1364    checkpoint57l_post
1365     tag before updating tutorials (pre-release-2)
1366    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
1367       for output and interpolation of input fields onto model grid)
1368    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
1369       Affects results of exp. rotating_tank ; update output.txt.
1370    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
1371          and taking the square quantity and/or using a fraction-weight field.
1372    o fix aim_diagnostics_init.F mate numbers.
1373    o add mnc output capability to diagnostics/diagstat and update
1374      our cvsignore files for the ACSII output generated
1375    
1376    checkpoint57k_post
1377    o lab_sea now uses diagnostics package and provides a suite of
1378      new EXF diagnostics output.
1379    
1380    checkpoint57j_post
1381    o exf
1382      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
1383        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
1384        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
1385      * extended diagnostics output
1386        - now includes all EXF variables
1387        - hs, hl moved to common block
1388        - separate S/R for diagnostics, called after ctrl vector is added
1389        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
1390        - EXFqnet contains true Qnet (i.e. includes qsw)
1391      * updated verif. lab_sea, global_with_exf
1392      * Rearranging hflux (exf_mapfields -> exf_getforcing)
1393        to ensure that diagnostics sees a true EXFqnet
1394    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
1395    o diagnostics pkg: change pointers so that 1 diagnostic can be used
1396      several times with different frequencies.
1397    o mnc-ify the thsice package as requested by Daniel Enderton
1398      - the monitor--MNC output needs work
1399      - many attributes need to be added (most are currently blank)
1400    o mnc-ify theaim_v23 package as requested by Daniel Enderton
1401      - many attributes need to be added (most are currently blank)
1402    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
1403    o add Sadourny like discretization to the 4th.O vorticity advection scheme
1404    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
1405      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
1406         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
1407    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
1408     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
1409    
1410    checkpoint57i_post
1411    o Diagnostics package was changed: diagnostic allocation is now deactivated
1412      by setting an empty file name in the namelist (used to be by setting 0 frequency)
1413    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
1414      add 1rst Order upwind vertical Shear.
1415    o add a quick fix for A/B checkpointing in OFFLINE mode
1416    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
1417      end-run around the C/Fortran linking horror in eesup/src/timers.F
1418    o added pkg/runclock: allows user to terminate run based on wall clock
1419    o added non-hydrostatic scaling parameter: nh_am2
1420    o pkg/my82: futile attempt to make results compiler-independent by adding
1421      some "_d 0", etc. no effect.
1422    o for mnc output, fill the 'T' coordinate var with myTime and create a
1423      separate 'iter' variable for iteration count
1424    o pkg/diagnostics:
1425      add new capability: output of Global/Regional & per-level statistics ;
1426      tested against monitor output (including land & thSIce) on various exp.
1427    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
1428    
1429    checkpoint57h_done
1430      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
1431      data.diagnostics, data.gchem, data.ptracers) is done.
1432    
1433    o pkg/diagnostics: prepare for Global/Regional statistics.
1434      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
1435    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
1436      and rename it: DIFFERENT_MULTIPLE
1437    
1438    checkpoint57h_post
1439    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
1440    o pkg/diagnostics: change output frequency, now in seconds (instead
1441      of Nb of iterations). This requires to change data.diagnostics.
1442    checkpoint57h_pre
1443    
1444    o in mnc, let the user create the output dir if both mnc_outdir_date
1445      and mnc_outdir_num are false
1446    o add fflags() to pkg/diagnostics which allows one to specify, on a
1447      per-file basis, the file precision [default behavior is unchanged]
1448    o added diagnostics to pkg/kpp, including computation of mixed layer
1449      depth based on a temperature/density criterion
1450    o updated verification/natl_box to test the new pkg/kpp diagnostics
1451    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
1452    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
1453    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
1454      not mnc -- this mistake was found by JMC and is now corrected
1455    
1456    checkpoint57g_post
1457    o add Adams-Bashforth 3rd Order time stepping:
1458      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
1459      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
1460    checkpoint57g_pre
1461    
1462    o make lambda[Theta,Salt]ClimRelax spatially varying
1463      (default remains spatially uniform constant based on tau)
1464    o added new control variables
1465      * init. uVel, vVel, etanN
1466      * lambda[Theta,Salt]ClimRelax
1467    o separate masks used for ctrl_pack/unpack 'from write_grid' output
1468      (suggested by G. Forget)
1469    
1470    checkpoint57f_post
1471    o add parameter "baseTime" = model base time = time at iteration zero
1472      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
1473      account for baseTime shift
1474    o move Coriolis arrays from PARAMS.h to GRID.h
1475    checkpoint57f_pre
1476    
1477    o mnc-ifying the seaice package
1478    o introduced an alternative length scale calculation for use in the limiting
1479      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
1480    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
1481    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
1482      as well as grad(vort3).  Made it compatible with both approximate form
1483      for the cubed sphere and full form of these gradients.  Added flag
1484      useFullLeith to select between approximate and full form.  
1485    o add "d0" in getcon.F to reduce differences between compilers/platforms
1486      update output.txt of exp. fizhi-gridalt-hs
1487    o change port_rand funtion to allow to set the seed.
1488    o fix obscure MNC bug involving conversion between reals and integers
1489      - it caused no problems with certain (eg. gcc, ifc) compilers but the
1490        new version is now more standards-compliant
1491    o adjoint-related modifications
1492      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
1493      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
1494      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
1495    
1496    checkpoint57e_post
1497    o Adding eddy stress controls a la Ferreira et al.
1498    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
1499    
1500    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
1501      update output.txt of exp. fizhi-gridalt-hs
1502    o add more "Z" dimensions and associated coordinate vars to MNC
1503    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
1504    o parameter calendarDumps: when set, approximate months (30-31 days) and years
1505      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
1506      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
1507      months and years.  Requires pkg/cal.
1508    o diagnostics: add pickup functionality
1509      - off by default for backwards compatibility
1510      - current version only uses MDSIO -- MNC will be added
1511    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
1512    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
1513    
1514    checkpoint57d_post
1515    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
1516    o modify verification/ideal_2D_oce so that it tests the creation of mnc
1517      output from the diagnostics package
1518    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
1519    o make genmake2 more portable by using ".$FS" instead of ".f" for more
1520      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
1521    o add coordinate variables to the MNC output from the diagnostics package
1522    o change MNC-flags default value: true when useMNC=TRUE
1523    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
1524      the ability (off by default) to read the grid information using MNC
1525    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
1526    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
1527    o do snap-shot diagnostics at the middle of the time-interval (instead of
1528      at the end).
1529    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
1530      new test for AIM with thSIce + slab-ocean
1531    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
1532    o move state variable diagnostics to the beginning of the time step ;
1533      (note: still needs some work specially for snap-shot diagnostics)
1534      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
1535    
1536    checkpoint57c_post
1537    o Change testing option (-ieee) to get closer agreement between g77 & ifort
1538    o generate new output.txt files on faulks with g77 & the new -ieee option
1539    checkpoint57c_pre
1540    
1541    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
1542      update output.txt of exp. global_ocean.90x40x15
1543    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
1544      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
1545    o add saltFlux(+File) forcing capability with periodicExternalForcing
1546    o allow to use pkg diagnostics for GM-Redi & ThSIce output
1547    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
1548    o improvements for the MNC output from DIAGNOSTICS:
1549      - correct handling of the unlimitied dimension
1550      - all dims now have associated coordinate variables
1551      - variables located at U, V, and Corner ("Z") points are now written
1552        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
1553        *all* data points are output
1554    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
1555    o added pkg/seaice/seaice_monitor.F
1556    o mdsio_readfield.F can now read files visible only to master MPI process.
1557    o pkg/seaice: some test code for ice-modified ocean stress
1558    o exf_getffields interpolation defaults to bilinear for all scalar forcing
1559      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
1560      spurious negative numbers for precipitation and humidity.  Will cause
1561      some small numerical differences for integrations using pkg/exf/exf_interp.F.
1562    o pkg/ctrl/
1563      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
1564        May be enabled via doPackDiag
1565      *  introduce z-scaling of
1566         + gradient (doZscalePack) and
1567         + control (doZscaleUnpack)
1568    o pkg/mdsio/
1569      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
1570      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
1571    
1572    checkpoint57b_post
1573    o simplify options in diagnostics_fill arguments (remove weird combinations)
1574    o fix MNC coordinate variables so that they now contain per-face index
1575      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
1576      general, EXCH2 grids are only aligned to a "local" coordinate system
1577    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
1578    o Implement instantaneous output within pkg diagnostics:
1579      setting a negative frequency in data.diagnostics produces
1580     "snap-shot" output (as opposed to time-average if freq > 0)
1581    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
1582      NOTE: change ptracer diagnostics name: use 2 characters to work with
1583            more than 9 tracers. Add also diagnostics of advect & diffus flux.
1584    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
1585      becomes the coordinate variable for the 'T' dimension
1586    o add CF-style coordinate variables to MNC
1587      - just a first cut:  numbers are meaningless on the cubesphere and
1588        missing along the T axis but otherwise it works!
1589    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
1590    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
1591    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
1592      this is based directly on what the model compute, so that the content of
1593      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
1594    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
1595    o clean up build options files for SunOS, in particular
1596      - remove -traditional from xmakedepend
1597      - change -xarch=v9 to -xarch=native for f77
1598      - restore use of make (not gmake)
1599      - add CC=gcc if using g77
1600    o changes per discussion of AM, JMC, & EH3 today:
1601      - move redundant "grid" variables out of "state" -- in preparation of
1602        creating proper CF-style coordinate variables and in recognition
1603        that any/all grid variables can be easily copied (eg. w/NCO) from
1604        the grid files into any of the other NetCDF files
1605      - *always* output grid variables with MDSIO (this will eventually be
1606        changed)
1607      - output MNC grid file if useMNC is true
1608    o every instance of _END_MASTER() has been found and replaced with
1609      _END_MASTER( myThid ) in order to satisfy certain picky Sun
1610      preprocessors
1611    o re-arrange diagnostics pkg initialisation:
1612     - allow each package to extend the available diagnostics list
1613     - add some checking and fix small problems (multi-threaded, ...)
1614     - new S/R diagnostics_fill (replace fill_diagnostics):
1615       look through the short list of active diag. (instead of the long list)
1616       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
1617    
1618    checkpoint57a_post
1619    o this set of changes restores TAMC compatibility
1620      tested for global_ocean.90x40x15 adjoint on trough
1621      (what a pain)
1622    
1623    checkpoint57a_pre
1624    o some modifs in tools/build_options for sunos
1625    o call ctrl_pack for ctrl at end for optimcycle=0
1626    
1627    checkpoint57
1628    o add horizontal bi-harmonic viscosity for vertical velocity
1629      - new parameter viscA4W (defaults to viscA4)
1630      - affects only non-hydrostatic code
1631      - to be done: no-slip lateral boundary conditions
1632    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
1633    o implement Implicit Vertical advection for pTracers
1634    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
1635      (implemented also for implicit vertical diffusion & advection)
1636    o OBCS: extend application of tracer open boundary conditions
1637      to a strip beyond the boundary of width Olx/Oly
1638    o add call monitor to TAF set of required calls (flow directives)
1639      and include in natl_box_adjoint
1640    o untangle a few ifdefs related to cost, ctrl, autodiff
1641      untangel a few ALLOW_ECCO_OPTIMIZATION
1642    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
1643      (theta2, salt2 in ecco_cost_weights)
1644    
1645    checkpoint56c_post
1646    o OBCS as control variables
1647      - update ctrl_ad_diff.list, obcs_ad_diff.list
1648      - remove balance of obcs controls from default
1649      - fix index bug nobcs in ctrl_init
1650      - fix dummy fields filen in ctrl_pack
1651      - add dummy weights for obcs
1652    o lsopt: comment out fort.94 output
1653    o optim:
1654      - remove unnecessary header files
1655      - adjusted namelists
1656      - add xerbla.F to Makefile
1657    o exf:
1658      - multiple modifications of exf_check_range
1659      - unit change in exf_init_runoff from [m/year] to [m/s]
1660    o mdsio:
1661      - i/o-vector change debugLevel from debLevA to debLevB
1662    
1663    checkpoint56b_post
1664    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
1665      is called from DO_THE_MODEL_IO
1666      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
1667      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
1668      - clean up PTRACERS_WRITE_TIMEAVE a little
1669    o add another verification experiment that tests both the cfc-pkg and
1670      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
1671      reactive tendencies treated inline with regular timestepping
1672    o testreport previously did a lousy job of comparing small numbers, so
1673      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
1674      implemented in the little c-progam tmp_cmpnum.c which is embedded in
1675      testreport.
1676    o ptracers_monitor: bug fix for MPI
1677    
1678    checkpoint56a_post
1679    o GCHEM: finish reorganizating the package
1680      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
1681        (introduces another 3D-array for each passive tracer, but only if
1682        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
1683        gchemTendency is not needed because the timestep is done separately)
1684      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
1685      - GCHEM is now---more or less cleanly---separate from PTRACERS
1686      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
1687        so clear to me how that should be done in a general way.
1688    o CFC: improve formatting of output in CFC_ATMOS
1689    o PTRACERS:
1690      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
1691        that ALL experiments with ptracers enable can be checked. This makes
1692        GCHEM_MONITOR obsolete.
1693      - include a runtime parameter PTRACERS_monitorFreq that defaults to
1694        monitorFreq
1695      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
1696    o add PTRACERS (PTR0[1-5]) to testreport output
1697    o exf_check_range:
1698      * default changed to .TRUE.
1699      * will check values for niter0 if debLevA, every timestep if debLevB
1700      * STOP in exf_check_range if 'out of range'
1701      * range chosen generous to allow for potential extema
1702      TBD: a version with stricter range
1703           permitted range would be runtime parameters
1704    o GMredi:
1705      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
1706      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
1707      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
1708    o GCHEM:
1709      - move call to GCHEM_FORCING_SEP, so that it is now called before
1710        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
1711      - introduced a useGCHEM runtime flag and applied it everywhere.
1712      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
1713        this flag is now only visible within GCHEM-pkg routines.
1714      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
1715        be replaced by a 3D array that is computed before thermodynamics; for
1716        this, the tracer ID iTracer had to be included into the parameter list
1717        of ptracers_forcing
1718      - set up forward_step to call gchem_forcing, that will replace
1719        gchem_forcing_int in ptracers_forcing
1720      - cleaning up
1721    o small cleaning of exch2: remove files that are also in eesupp/src
1722    
1723    checkpoint56
1724    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
1725    o mnc: cleanup "full" files--fixes out-of-memory problem
1726    o ECCO-GODAE
1727      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
1728      * fully merged and updated from SIO code
1729        windstress sign change affects
1730        - exf_inscal_[u/v]stress
1731        - sign of xx_tau[u/v] adjustments
1732        - signs in cost_scat
1733      * ctrl_get_gen: avoid update of tau[u/v] for first few days
1734      * natl_box_adjoint updated and compressed
1735      * 2-level checkpoint switch added
1736        (tested in EXP. 1 of natl_box_adjoint)
1737      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
1738    o SVD
1739      * first complete, non-hacked version for SVD calculations
1740      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
1741        performed via direct access files admtlm_vector.it????
1742        (via ctrl_[un]pack)
1743      * optimcycle is used for ARPACK iteration counter
1744        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
1745      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
1746        and add linear transforms where necessary
1747      * controls are initial/final SST, SSS (can be extended; need to check
1748        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
1749    o mdsio: filename info to both stderr, stdout
1750    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
1751      from sign change
1752    
1753    checkpoint55j_post
1754    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
1755      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1756    o add consistent build directories and .cvsignore files to verification
1757    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
1758    o make all subroutines 30 or less characters in length for certain older
1759      compilers to work (a thorough search only turns up two routines in
1760      pkg/ptracers)
1761    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
1762      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1763    
1764    checkpoint55i_post
1765    o change arrays for total vertical diffusivity (2.D if explicit,
1766      3.D if implicit) ; each ptracer uses its own background value.
1767    o added mnc/NetCDF output capability to ocn_compon_interf
1768      - added bits to verification/cpl_aim+ocn so that it can run on
1769        ITRDA and other clusters without the mpirun "-wd" option
1770    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
1771      configuration
1772    o give MNC the ability to create additional files rather than
1773      exceeding a specified file size limit "MNC_MAX_FILESIZE"
1774      - the default is just less than 2GB which is a practical limit
1775        on many systems
1776    o Compute the non-local term using either KPP vertical diffusivity (=default)
1777       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
1778    
1779    checkpoint55h_post
1780    o add verification test "vermix"
1781    o remove all the *_ioinc flags and replace with the single global
1782      outputTypesInclusive flag
1783    o allow to set a vertical profile of vertical diffusivity for T & S
1784    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
1785    o useMNC moved from data.mnc to data.pkg
1786    
1787    checkpoint55g_post
1788    o Renaming carbon AD experiments to comply with testreport conventions
1789    o Updating adjoint of Held-Suarez hs94.1x64x5
1790    o Fixing directives for non-ECCO forward_step, after ECCO directives
1791      have been fixed to avoid recomp. of do_oceanic_phys
1792      Works well for global_ocean.90x40x15,
1793      but recomp. issue remains for carbon
1794    o Updating adjoint output for natl_box_adjoint after
1795      pkg/ecco has been modified (see taga c55d_post)
1796    
1797    checkpoint55f_post
1798    o rename to timeave_init_fixed
1799    
1800    checkpoint55e_post
1801    o some delicate re-shuffle of store directives to avoid one
1802      extra call of do_oceanic_physics
1803      affects ecco_the_main_loop.F, do_oceanic_physics.F
1804      checkpoint_lev1_directives.h
1805    o NB: this may break global_ocean adjoint temporarily,
1806      but it is clear how to fix it. Will do later, need this now.
1807    
1808    checkpoint55d_post
1809    o ECCO specific cost function terms (up-to-date with 1x1 runs)
1810    o ecco_cost_weights is modified to 1x1 runs
1811    o modifs to allow observations to be read in as
1812      single file or yearly files
1813    o enable to read exf forcing fields as either
1814      single file or yearly files (flag useExfYearlyFields)
1815    checkpoint55d_pre
1816    
1817    o switch between 2-level and 3-level checkpointing
1818    o add ability of MNC to write local and "partial" (eg. 2D slices where
1819      the full 3D field is never actually stored) arrays to NetCDF files
1820      with the correct (that is, the complete multi-dimensional) set of
1821      array indicies
1822      - used in mom_vecinv() to write the diagFreq output
1823      - tested (demonstrated) in verification/aim.5l_cs
1824    o further mnc-ification
1825      - add verification/lab_sea to the list with mnc setups
1826      - fix undefined mnc v-names in cd_code
1827      - add kpp to mnc output (both snapshot and timeave)
1828    o non-hydrostatic code
1829      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
1830        in calc_gw.F
1831      - defaults to viscAh
1832      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
1833        friction or Leith) in non-hydrostatic mode, as long as there is
1834        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
1835    o pkg/cost
1836      extend simple cost functions to treat time mean quantities
1837      (T,U,V) via cost_accumulate_state from cost_tile
1838    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
1839        be 2 times larger than the minimum size the advection scheme requires.
1840        now get a perfect conservation of salt in advect_cs test-exp (updated)
1841    o GGL90 (Gaspar's TKE mixed layer)
1842      - add horizontal diffusion of TKE, requires exchanges in
1843        do_fields_blocking_exchanges, horizontal diffusivity is zero by
1844        default. In OPA there is no horizontal diffusion of TKE but the
1845        mixing coefficients are computed from a horizontal average of TKE of
1846        6 points or so. I think that diffusion has a little more physical
1847        justification.
1848      - clean up ggl90_calc in the hope of reducing memory usage (this hope
1849        was in vain)
1850      - mask tke-variable in ggl90_init
1851    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
1852    o fix biharmonic diffusion on CS-grid.
1853    o more obcs stuff
1854      - added obcs_external_fields_load as an alternative to the EXF-pkg option
1855        for reading boundary values. This routine is called from
1856        obcs_prescribe_read
1857      - updated obcs_check
1858      - changed sponge layer relaxation parameter units for days to seconds
1859      - turned off sponge layer by default
1860      - changed argument list of OBCS_CALC to myTime+deltaTclock
1861      - fixed about 35 bugs in obcs_external_fields_load
1862    
1863    checkpoint55c_post
1864    o obcs stuff
1865      - new runtime flags useOBCSprescribe, useOBCSbalance
1866      - re-arranged obcs_calc
1867      - moved exf_getobcs to obcs_prescibe_read
1868        obcs_prescibe_read is called after ORLANSKI stuff
1869        and independent of it (executable can contain all).
1870      - updated obcs_check
1871      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
1872        These may be necessary only if tangential velocities are
1873        prescribed at OB, not sure, needs testing.
1874    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
1875      which simplifies the calls and passes the ifc check-bounds test
1876    
1877    checkpoint55b_post
1878    o add a 2D scalar, Z location, exchange_2 routine.
1879    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
1880      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
1881      affects advect_cs results (for the wrong reason): update output.txt
1882    o use a more standard discretization for biharmonic viscosity ;
1883     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
1884      affects results of dome set-up: update output.txt
1885    o fix gad_advection.F (CubedSphere part), back to version 1.23
1886    o fix bug in mom_vi_del2uv.F (CubedSphere part).
1887    
1888    checkpoint55a_post
1889    o merged code to
1890      * prescribe/read time-dependent open boundaries
1891        (works in conjunction with exf, cal)
1892      * sponge layer code for open boundaries
1893      * each boundary N/S/E/W now has its own CPP option
1894        (healthy for the adjoint)
1895    
1896    checkpoint55
1897    o up-to-date adjoint of previous breaks
1898      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
1899      - global_ocean_ebm: adjoint still needs fix (TLM ok)
1900      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
1901      - carbon: * remove tr1-related adjoint verification
1902                * add ptracer as control variable
1903    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
1904      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
1905    
1906    checkpoint54f_post
1907    o in verification/carbin/ remove experiment related to
1908      ALLOW_PASSIVE_TRACER (array tr1 etc)
1909      code_ad/ input_ad/ results_ad
1910    
1911    o add two new packages
1912      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
1913        + subject to optimization (memory)
1914      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
1915        + subject to reordering (many GOTOs in the original code)
1916        + so far opps is called for every (i,j) point, and then operates in
1917          the vertical; one may want to reorder the scheme in order operate in
1918          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
1919          fields)
1920    o overhaul of IO so that we now have flags for MDSIO and/or MNC
1921      - all verification tests compile and run with linux_ia32_g77
1922      - defaults are compatible with current input files--nothing
1923        should change if you were not previously using MNC
1924      - MNC output has been added in numerous places (eg. timeave)
1925        but there are still a few writes not yet do-able with MNC
1926        (this is in progress)
1927      - flags now allow for either/or/both use of MDSIO and MNC and
1928        documentation will soon follow
1929      - numerous small formatting cleanups for ProTeX
1930    o add version info (via BUILD_INFO.h) to MNC and stdout
1931    
1932    checkpoint54e_post
1933    o add two new packages
1934      - pp81 (Packanowski and Philander, 1981), Richardson number and
1935        stratification dependent mixing
1936      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
1937      - these scheme operate in a similar manner as KPP (without ghat, of
1938        course), however there is only one diffusivity that is used for both
1939        temperature and salinity (and passive tracers)ç
1940    o add offline package
1941    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
1942      provided by Stephanie Dutkiewicz
1943    o genmake2: add ability to search for C compilers and cleanup test output
1944      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
1945    
1946    checkpoint54d_post
1947    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
1948    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
1949      leading to additional shift by 5 days each year of integration
1950       (i.e. leading to considerable offset over the years)
1951    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
1952    o start with no AB and no initial filtering (staggerTimeStep):
1953      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
1954    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
1955      (external loading & cpl import/export stay in forward_step.F)
1956    o update coupling interface to work with new staggerTimeStep
1957    o change MDSIO ptracers_pickup.
1958    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
1959    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
1960    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
1961    
1962    checkpoint54c_post
1963    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
1964      this affects (truncation error) output.txt of test-exp:
1965       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
1966    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
1967    o change Qnet to always be the net heat flux, (+upward).
1968      affects (truncation error) output of natl_box exp.: updated
1969    o define the max number of passive tracers in PTRACERS_SIZE.h
1970    o start to test mnc routinely in exp0
1971    o add sea-ice loading (sIceLoad) as a new forcing field.
1972    
1973    checkpoint54b_post
1974    o add testreport "-j JOBS" option for parallel builds (tested and pretty
1975       impressive on Altix and Opteron systems)
1976    o diagnostics can now write NetCDF files through the mnc package
1977    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
1978    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
1979    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
1980      affects (truncation error) output of lab_sea & natl_box exp.: updated
1981    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
1982    
1983    checkpoint54a_post
1984    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
1985    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
1986    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
1987    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
1988      + internal_wave (shift in writing cg2d_ini_res)
1989    checkpoint54a_pre
1990    
1991    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
1992      - modified verification/lab_sea and natl_box_adjoint accordingly
1993    
1994    checkpoint54
1995    checkpoint53g_post
1996    o prepare splitting of thermodynamics: store convect.counter in common block
1997    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
1998      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
1999    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
2000    o new parameter "nShapS": allow to treat differently S from T (nShapT)
2001    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
2002    o restore adjointability
2003    
2004    checkpoint53f_post
2005    o modifications that affect AIM experiment results (update output.txt):
2006      - no advection of S at top interface Nr (pkg/generic_advdiff)
2007      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
2008    o AIM pkg:
2009      - include stability function into surf.Flux derivative relative to Tsurf
2010      - calculate clear-sky radiation & surface temp. change (for diagnostics)
2011    
2012    checkpoint53e_post
2013    o merged cylindrical coord configuration
2014    o added rotating_tank experiment
2015    checkpoint53e_pre
2016    
2017    checkpoint53d_post
2018    o faulks upgraded: re-generate output.txt that have changed:
2019       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
2020    o Added Bryan and Lewis, 1979, vertical diffusivity profile
2021    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
2022    o added Sadourny discretization of Coriolis
2023      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
2024      - re-enabled use of omega3 (useAbsVorticity)
2025    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
2026      vector-invariant equations
2027      - note: does *NOT* yet use same variable visc. for no-slip BC's.
2028    o recoded the lateral boundary conditions for non-hydrostatic w, this time
2029      hopefully without new bugs
2030      - still to do: biharmonic friction for non-hydrostatic w
2031    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
2032    o regenerated output for global_ocean_ebm (using -ieee)
2033    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
2034      of mom_common/
2035      - simple re-arrangement of instructions within computing loop
2036    checkpoint53d_pre
2037    
2038    checkpoint53c_post
2039    o new version of coupler for AIM+thSIce and Ocean models
2040     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
2041     - land: change Evaporation of snow
2042     - aim with thSIce: fix bug in snow-precip.
2043    o changes to calc_gw.F
2044     - bug fix for w^2 term near the bottom boundary
2045     - (hopefully) improve the lateral slip boundary condtions for use with
2046        partial/looped cells
2047      - because the bug fix changes two verification experiments anyway (exp5
2048        and plume on slope), change the lateral boundary condition from half slip
2049        to the value of no_slip_sides
2050    o ebm package wasnt quite up to the parallel task. Fixed that.
2051    o Adjoint of EBM package + verification
2052      * TLM OK
2053      * ADM not sufficient accuracy yet (needs further testing)
2054    
2055    checkpoint53b_post
2056    o Commiting new energy balance model to repository
2057      * package is pkg/ebm
2058      * verif. is verification/global_ocean_ebm
2059      * references are in ebm_driver.F
2060    C      * X. Wang, P. Stone and J. Marotzke, 1999:
2061    C        Global thermohaline circulation. Part I:
2062    C        Sensitivity to atmospheric moisture transport.
2063    C        J. Climate 12(1), 71-82
2064    C      * X. Wang, P. Stone and J. Marotzke, 1999:
2065    C        Global thermohaline circulation. Part II:
2066    C        Sensitivity with interactive transport.
2067    C        J. Climate 12(1), 83-91
2068    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
2069    C        Destabilization of the thermohaline circulation
2070    C        by atmospheric eddy transports.
2071    C        J. Climate 7(12), 1870-1882
2072    o Will need long integration testing.
2073    checkpoint53b_pre
2074    
2075    o created pkg/mom_common in preparation for variable viscosity code
2076    o renamed and split ini_mnc_io
2077    o pkg/land: only liquid water can diffuse or run-off
2078    o AIM using land: soil wetness availability account for snow
2079    o added printMapIncludesZeros to EEPARMS namelist
2080    
2081    checkpoint53a_post
2082    o restore TAMC compatiility for exf_constants.h
2083      (no usage of _d in .h)
2084    o Additional storing in KPP in an attempt to fix
2085      TAMC problem with adjoint of KPP code.
2086      (no success...)
2087      Identical code works fine with TAF.
2088    o Fixed verification/natl_box_adjoint experiments.
2089      Initial conditions for Experiments 4 and 5 are now
2090      set to "SEAICE_initialHEFF=0", which is more reasonable,
2091      and hence gives results closer to that of Experiment 2.
2092      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
2093    
2094    checkpoint53
2095    o stable checkpoint with up to date adjoint
2096      TLM tests only run for 1st grdchk at the moment. Its unclear if
2097      this is a code problem or a problem with resetting code for g_
2098      variables that is being autogenerated wrong.
2099      Otherwise:
2100       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
2101       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
2102         are both still in chaos following their security messes.
2103    
2104    checkpoint52n_post
2105    o various build (mostly genmake2) changes including:
2106      - ability to build/run more easily within Cygwin and MacOS X
2107      - more complicated Makefiles with a stronger dependence on Gnu Make
2108    o pkg/seaice modifications
2109      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
2110        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
2111        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
2112      - changed proxy for geostrophic velocity and updated
2113        verification/lab_sea/results/* accordingly
2114      - removed ADI dynamic solver from pkg/seaice
2115      - replaced all occurrences of 1/CSTICE or 1/CSUICE
2116        they caused a segmentation fault under certain circumstances
2117      - removed unused field WATR
2118    o bug fix in exf-package:
2119      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
2120         now reflect that.
2121    o small fixes in the cal-package:
2122      - set reference date to first of January for the 'model'-calendar
2123      - failing of cal_CheckDate in cal_FullDate now actually results in a
2124        warning
2125    o small modifications in exf-package to increase flexibility:
2126      - change climtempfreeze from a constant to a runtime parameter that
2127        is specified in data.exf_clim (default = -1.9)
2128      - introduce runtime parameter windstressmax (default = 2.0) that is
2129        specified in data.exf
2130    o fix in pkg/thsice:
2131      - update Evap (Tsf changes) to be consistent with Latent heat flux
2132      - maintain snow precipitation unchanged (even if Tsf >=0).
2133     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
2134    
2135    checkpoint52m_post
2136    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
2137      this does not change any of the results, because myIter=0 in swfrac always
2138      lead to jwtype=2 (the default anyway), but the call makes little sense
2139      as a default
2140    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
2141    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
2142      atmospheric model (AIM) to use it ; add a "slab ocean" component.
2143    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
2144    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
2145    o extending useSingleCpuIO option to work with new exch2 I/O format
2146      - old-style, missing-tile I/O is still accessible by defining CPP
2147        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
2148    o monitor package can write to NetCDF files and/or STDOUT
2149    o fix re-definition bug in MNC_GRID_INIT_ALL()
2150    o doc/api_reference added
2151      - a framework for building an API Reference Manual using all
2152        the "protex" comments embedded in the code
2153      - see pkg/generic_advdiff, pkg/mnc for examples
2154    o MNC:
2155      - make myThid the last argument for all subroutines
2156      - new default for the grid files: NO halos
2157      - add useMNC and other run-time flags
2158      - separate per-file-group handling of the unlimited dimension
2159      - early initialization of MNC w/ flags read at the eeboot stage
2160        and lookup tables set in initialize_fixed
2161      - write all MNC output to a freshly-created directory
2162    o thermodynamics sea-ice (thsice) is now tested with testreport.
2163    o test exp. advect_cs: use the standard cs32 grid ; update output.
2164    o Added functionality to grdchk:
2165      pick global i,j,k position (or nearest wet) where to perform check.
2166    
2167    checkpoint52l_post
2168    o new land formulation:
2169      a) use ground enthalpy as prognostic variable to ensure exact
2170         energy conservation.
2171      b) account for water temperature and for latent heat of freezing
2172         in all processes (rain, run-off, ground storage)
2173      c) compute surface and ground temperature implicitly.
2174    o aim_v23 modification for new land model:
2175      a) Treat separately land / ocean / sea-ice surface fluxes
2176         to allow implicit computation of land & sea-ice surface temp.
2177      b) add snow precipitation.
2178    checkpoint52l_pre
2179    
2180    o fix problem (when 1 tile is empty) in min/max monitor.
2181    o fix bug in timeAve (u,vZetatave in common block)
2182    o no restoring terms under ice for pkg/seaice
2183    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
2184    o bug fix for pkg/seaice pickups
2185    o change MNC call locations and add coordinate attributes
2186    o mask vorticity at the corner ; affects global_ocean.cs output
2187    o fix ini_curvilinear_grid ; test CS experiments with mpi
2188    o aim.5l_cs: modify sea-ice fraction input file ; update output
2189    o exf: Adding simple range check routine for exf fields after read
2190    
2191    checkpoint52k_post
2192    o removed top-level directory "diags"
2193      - we migrated these functions to pkg/timeave a long time ago
2194    o fixed bug introduced in pkg/monitor
2195    o accuracy ctrlprec = 32 insuffient for gradient checks using
2196      averaged fields (I/O via cost_averages)
2197      -> use ctrl.h in active_file*.F to control I/O precision.
2198    o paramter list of CALL ADTHE_MAIN_LOOP
2199    o added initial do_the_model_io to ecco
2200    o set all ...Freq to zero after cost_final
2201      taveFreq, dumpFreq, pChkptFreq
2202    o MAIN and ECCO differentiability restored
2203    
2204    checkpoint52j_post
2205    o fix nchklev in tamc.h for global_ocean...
2206    o Bringing flow and store directives up-to-date
2207    o Really weird thing!
2208      call do_the_model_io from the_main_loop with parameters
2209      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
2210      TAF places a faulty re-call of initialise_varia
2211      after cost_final call which should not be there!
2212    checkpoint52j_pre
2213    
2214    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
2215      error messages
2216    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
2217    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
2218      debug output
2219    o modfied mdsio_writefield.F to handle non-global files under exch2
2220    o update AIM Cubed-Sphere exp (aim.5l_cs):
2221      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
2222    o update AIM Equatorial Channel exp:
2223      use standard aim_v23 pkg and change the SST fields to be more realistic.
2224    o globalFile now works with exch2
2225    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
2226      mon_vort3.F to make exch2 friendly with >1 tile per cube face
2227    o limit timeave output for hi-res integrations
2228    
2229    checkpoint52i_post
2230    o removed CPP_EEOPTIONS.h from verification/*/code
2231    o updated the tiling for global_ocean_pressure
2232    checkpoint52i_pre
2233    
2234    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
2235      the old pkg/aim).
2236    
2237    checkpoint52h_pre
2238    o shortened offending lines in exch2_send_rx?.template
2239    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
2240    o genmake2: add build & execute test for NetCDF code
2241    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
2242      old grid files, moved CPP_EEMACROS.h to pkg/exch2
2243    o added useSingleCPUIO flag to monitor.F and mon_out.F
2244    o added temporary hack for sea-ice dynamics on the cube:
2245      metric terms are ignored and it is assumed that
2246      there is no sea-ice on cube faces 1, 2, 4, and 5.
2247    
2248    checkpoint52f_post
2249    o added exch2 cube routines to pkg/exch2
2250    o modified hs94.cs-32x32x5 to use it
2251    o added new grid files to hs94.cs-32x32x5
2252    checkpoint52f_pre
2253    
2254    checkpoint52e_post
2255    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
2256      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
2257    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
2258      to work with implicit vertical advection and AB ;
2259    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
2260    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
2261     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
2262    checkpoint52e_pre
2263    
2264    o fix bug in impldiff when Nr=1 or Nr=2.
2265    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
2266    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
2267    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
2268      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
2269    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
2270    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
2271    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
2272    
2273    checkpoint52d_post
2274    o re-tiled many expts to allow comparison in multi-processor mode
2275      - updated output accordingly
2276      - changed hs94.128x64x5 to use intial T from file rather than use the
2277        random number generator
2278    o add infrastructure in model routines for fizhi and gridalt packages
2279    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
2280    o changes to permit hi-res, cubed-sphere, configuration
2281      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
2282      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
2283      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
2284        of surface winds for the cube
2285      (A verification experiment, based on global_ocean.cs32x15, but with
2286       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
2287       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
2288       complete with example surface forcing files and matlab scripts to look
2289       at the output and compare it with that of global_ocean.cs32x15.)
2290    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
2291       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
2292       to conform to the common rule.
2293    o check-in the first version of the coupler + interfaces for multi-components
2294       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
2295       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
2296       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
2297       - ocean and atmos. share the same horizontal grid (no interpolation).
2298       - exchanges between component and coupler is done in forward_step
2299    o new verification experiment, cpl_aim+ocn:
2300       coupled ocean - AIM atmosphere on cs32 grid.
2301    
2302    checkpoint52d_pre
2303    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
2304    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
2305    
2306    checkpoint52c_post
2307    o Fixing OPTIONS files for use of exf:
2308      - ALLOW_ECCO not needed
2309      - ECCO_CPPOPTIONS.h should not be included from
2310        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
2311        as has been the case in the past
2312      - All cal/exf related options are currently set in
2313        single header file. Should remain so until we
2314        agree on a consistent new policy.
2315    o Removed all CPP options for cal package.
2316      cal has no more CPP options.
2317    o modified STOREs in GAD_ADVECTION
2318    o corrected key comp. for passkey
2319    
2320    checkpoint52b_post
2321    o new version: "thsice" of thermodynamic sea-ice pkg:
2322     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
2323     - modify fluxes but do not change theta directly;
2324     - light cleaning of bulk_force pkg (still needed with thsice).
2325     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
2326       + output_thsice.txt to test thsice & bulk_force pkgs.
2327    o put back grid & coriolis monitor output.
2328    checkpoint52b_pre
2329    
2330    o call "do_the_model_io" at the beginning (=> dump initial state)
2331    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
2332    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
2333      (need info on NUMBER_OF_PTRACERS)
2334    o missing PTRACERS headers in some routines
2335    o default tamc.h in pkg/autodiff supposed to crash
2336      to ensure proper customization
2337    
2338    checkpoint52a_post
2339    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
2340      - moved surfaceTendencyTice from pkg/seaice to main code
2341      - subroutine FREEZE_SURFACE now limits only surface temperature
2342        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
2343        => new output.txt for global_ocean.cs32x15 & global_with_exf
2344      - keep the old version of FREEZE for backward compatibility;
2345        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
2346      - corresponding modifs for TAF directives
2347    o added surface flux output variables to TIMEAVE_STATVARS
2348    o time-averaged output for pkg/ptracers
2349    o fix problem with ECCO-related divided adjoint
2350      snapshot file was missing some ad-variables,
2351      but no warning issued by TAF
2352    
2353    checkpoint52a_pre
2354    o some bug fixes for #undef REAL4_IS_SLOW
2355    
2356    checkpoint52 = ecco_c52_e35
2357    o after testing adjoints of checkpoint51u_post
2358    
2359    checkpoint51u_post
2360    o this is the post-merge tag of the ecco-branch
2361      (needs another clean checkout and re-testing)
2362    o various natl_box_adjoint configs and results
2363      but no input fields
2364    o obcs adjoint not yet merged!
2365    o adding ECCO global 1x1 and 2x2 degree configs
2366    o updated/extended some store directives for seaice
2367    o pkg/ecco now containes ecco-specific part of cost function
2368    o top level routines the_main_loop, forward_step
2369      supersede those in model/src/
2370      previous input data.cost now in data.ecco
2371      (new namelist ecco_cost_nml)
2372    o in ctrl/ cleaned some cross-dependencies and updated CPP options
2373    
2374    checkpoint51t_post
2375    o this is the pre-merge tag of the ecco-branch
2376    
2377    checkpoint51s_post
2378    o cleanup: removed various obsolete #define-s
2379    o pkg/grdchk
2380      - renamed 'ph-grd 3' to 'grad-res'
2381      - merged from ecco-branch
2382        (remaining bug fixes for obcs gradient checks)
2383      - additional high-precision output for testreport
2384        (grep for 'precision_grdchk_result')
2385    
2386    checkpoint51r_post
2387    o cleaned up or removed CPP_OPTIONS.h files
2388    o updated results for some of the tests to reflect the new
2389      optfiles (-ieee: -O0 instead of -O3)
2390    
2391    checkpoint51q_post
2392    o cd_code:
2393      - moved cd_scheme.F -> cd_code_scheme.F
2394      - separate read_checkpoint from cd_code_ini_vars.F
2395      - separated cd_code part from write_checkpoint
2396      - updated AD_SOURCE, generated .flow
2397      - added CD_CODE_VARS.h to the_main_loop
2398      - Moving cd_code specific store dir.s to pkg/cd_code
2399    o ctrl package totally restructured
2400      - pack/unpack now optional and decoupled from
2401        xx_/adxx_ I/O
2402      - ctrl_pack/unpack cleaned
2403        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
2404      - confined inclusion of AD_CONFIG.h to where necessary.
2405    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
2406    
2407    checkpoint51p_post
2408    o create initial cd_code package
2409      - WARNING: the initialization of fields within packages
2410        is broken because INI_FIELDS (where READ_CHECKPOINT is
2411        called) is called *before* PACKAGES_INIT_VARIABLES.
2412        This seems to be backwards since
2413        1) its important to initially zero the entire field including
2414           the "halo" region
2415        2) zeroing needs to be done *before* reading pickup info
2416           and the pickup call might or might not happen in any
2417           particular run
2418      - this needs an overhaul for R2
2419    o cleanup verification/*/code/GMREDI_OPTIONS.h
2420    o cleanup testreport
2421    
2422    checkpoint51o_post
2423    o bringing AD-related verif's up to date with genmake2
2424      - carbon/
2425      - global_ocean.90x40x15/
2426      - hs.94.1x64x5/
2427      - (front_relax/ )
2428    o (more) consistent directory structure for AD-related verif.'s
2429    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
2430    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
2431    o bug fix in find_alpha.F for MDJWF:
2432      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
2433        change rho -> rho-rhoConst
2434      - replace call find_rho to find_rhonum
2435    o initialisation of rFlx extended to full array (required by TAF)
2436      and shifted to thermodynamics
2437    o removed PTRACERS.h in ptracers routine
2438    o added surfacetendencyPtr to S/R parameter list pracers_forcing
2439    o Correcting initialisations for fVerU, fVerV.
2440    o helping TAF to recognize dependency on kUp for
2441      fVerU, fVerV
2442    o Replacing delZ by delR in pkg/ctrl/
2443    checkpoint51o_pre
2444    
2445    o undid all of cp51 pending some cleanups and discussion
2446    o added the [#include "AD_CONFIG.h"] statement to all files that need
2447       it for adjoint/tl #defines
2448     o re-worked the build logic in genmake2 to support AD_CONFIG.h
2449     o removed tools/genmake since it no longer works
2450    
2451    checkpoint51n_post
2452    o modifications to make FREEZE flux visible to pkg/kpp
2453      - moved surfaceTendencyTice from pkg/seaice to main code
2454      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
2455      - subroutine FREEZE now limits only surface temperature
2456        (this means new output.txt for global_ocean.90x40x15,
2457         global_ocean.cs32x15, and global_with_exf)
2458    o added surface flux output variables to TIMEAVE_STATVARS
2459    
2460    checkpoint51n_pre
2461    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
2462    o added [#include "AD_CONFIG.h"] to all files that use the following
2463      defines:
2464      - ALLOW_ADJOINT_RUN
2465      - ALLOW_TANGENTLINEAR_RUN
2466      - ALLOW_ECCO_OPTIMIZATION
2467    
2468    checkpoint51m_post
2469    o incorporating changes to get TAMC/TAF working in genmake2
2470      - added new TAMC/TAF targets to the Makefile
2471      - various cleanups related to package handling
2472      - these changes should have no impact on the forward model
2473    
2474    checkpoint51l_post
2475    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
2476     - faster algorithm for cal_addtime.F
2477     - higher precision arithmetic, where needed
2478     - pkg/exf *startdate variables changed from calendar date to
2479       model integration time
2480    
2481    checkpoint51l_pre
2482    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
2483    o enable to apply restoring on S & T only in a latitude band.
2484    o update output (external_forcing_surf modif. change truncation errors)
2485       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
2486    
2487    checkpoint51k_post
2488    o change default to: useNHMTerms=.FALSE.
2489     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
2490       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
2491     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
2492        exp1, ideal_2D_oce
2493     - change data file of oceanic exp (leave the results unchanged for now)
2494       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
2495    o set gravitySign automatically according to the vertical coordinate used
2496      (and change sign: back to "logical" value: +1 when R increases downward)
2497    o added an include barrier to the default CPP_OPTIONS.h and
2498      removed the #include "PACKAGES_CONFIG.h" from it
2499    o fix a bug in mom_fluxform (from chk51j_post)
2500    
2501    checkpoint51j_post
2502    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
2503    o adjusted some flow directives (dynamics, thermodynamics)
2504    o added cubed-sphere case to test cost function
2505    o heckpoint_lev?_directives.h now include
2506      pkg-specific directives, whenever those are enabled.
2507    o Moving pkg-specific flow directives to corresponding pkg
2508      Moving pkg-specific differentiation list to corresponding pkg
2509      Moving pkg-specific checkpoint-lev storing to corresponding pkg
2510      ---> conventions are
2511           - pkg_ad.flow
2512           - pkg_ad_diff.list
2513           - pkg_ad_check_lev?_dir.h
2514    
2515    checkpoint51i_post
2516    o merge of the branch-genmake2
2517      - knowingly breaks the older genmake
2518      - automatic generation of all ALLOW_${PKG_NAME} defines
2519      - new testreport supersedes older testscript
2520    o large number of package inclusion and header cleanups
2521    checkpoint51i_pre
2522    
2523    o new output for adjoin of global ocean vector invariant
2524    o fix for checkpoint of thermodynamic seaice and bulk_force
2525    o Steph gchem various cleanups
2526    
2527    checkpoint 51h_pre
2528    o fixed some single quotes
2529    o modify gchem pkg to be more versatile
2530    o modifications to clean up dic pkg
2531    o add pkg/cfc
2532    
2533    checkpoint51g_post
2534    o provide links for ARPACK and ADM*TLM
2535    o start removing verification/vero/
2536    o update AD-related stuff
2537      (in particular some IF-statements in model/src/ routines)
2538    o adding to verification/global_ocean.90x40x15/ adjoint of
2539      vector invariant setup
2540    
2541    checkpoint51f_post
2542    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
2543    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
2544      of tracer Green's fucntions for ocean inversion project.
2545    
2546    checkpoint51f_pre
2547    o Added on-the-fly spatial interpolation capability
2548        "USE_EXF_INTERPOLATION" to pkg/exf.
2549      - This is a temporary Cartesian-grid hack until
2550        the super-duper ESMF coupler becomes available.
2551      - See verification/global_with_exf/README for usage example.
2552      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
2553        flags and modified pkg/seaice accordingly.
2554    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
2555        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
2556        non-local transport term.
2557    
2558    checkpoint51e_post
2559    o pkg/mom_vecinv:
2560      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
2561      - add time-ave diagnostic of vorticity advection.
2562    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
2563    o atmospheric geopotential: - include water vapor effect;
2564                                - use p^kappa in p* scaling.
2565    o land pkg: read initial state from files.
2566    o AIM : add stratospheric drag in the upper level
2567    
2568    checkpoint51d_post
2569    o change function ILNBLNK (=> last non-blank char.) to return zero
2570      (instead of the string length) when the string. char is empty
2571    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
2572    o modif's to restore TAMC compatibility
2573      - avoid "_d" constructs in PARAMETER declarations
2574      - avoid interrupting lines by comment lines
2575    o Use cluster local disks for purely local I/O
2576      vs. globally visible disks needed for ctrl stuff
2577      (merged from ecco-branch)
2578      - new active_file_loc... and mdsio_..._loc routines
2579      - affected packages: autodiff, ctrl, grdchk, mdsio
2580    
2581    checkpoint51c_post
2582    o introducing integer flag debugLevel
2583      - debLevZero: suppress all output
2584      - debLevA: standard
2585      - debLevB: equivalent to current debugMode=.TRUE.
2586    o introducing pathname variable mdsioLocalDir for mdsio
2587      that can be specified at runtime
2588      (relevant for cluster I/O to local disk)
2589    `
2590    >>>checkpoint51b_post
2591    adjoint of ptracers
2592    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
2593    o extended state in checkpoint_lev?, etc.
2594    o alternative ctrl/cost with tr1 or ptracer
2595    o new comlev1_bibj_ptracers
2596    o new ptracers.flow
2597    o made ptracers_forcing same as external_forcing_s
2598    o added verification for adjoint with ptracers
2599      - adm. grdchk fail so far
2600      - tlm. grdchk OK
2601      - checked tapelev/comlev recomputations: OK
2602    <<<checkpoint51b_pre
2603    
2604    checkpoint51a_post
2605    o added code for biogeochemistry package
2606      - new pkgs: dic, gchem
2607      - new subroutine in ptracers
2608    o modify code for biogeo packages
2609      - in model/src and pkg/ptracers
2610    
2611    checkpoint51
2612    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
2613      - autodiff, ctrl, exf, grdchk, seaice
2614      kept separate packages
2615      - cost, ecco, obcs
2616    o updating verification/internal_wave, verification/lab_sea
2617      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
2618    
2619    checkpoint50i_post
2620    o Preparing next differentiable checkpoint and sync
2621      of MAIN vs. ecco-branch
2622      - 1st step: this one is differentiable
2623      - 2nd step: next(! not this) checkpoint will have updated packages
2624                  from ecco-branch)
2625    
2626    checkpoint50h_post
2627    o new package "land": provide surface BC for AIM.
2628    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
2629    o AIM: use true log-P extrapolation for near surface temp (= as in
2630        F.Molteni paper) ; update aim.5l_cs output.
2631    o New variable in PARM03 for more flexible pickups
2632    o somewhat cleaned package initialisation sequence for
2633      ctrl/ cost/ ecco/ in packages_... routines
2634    
2635    checkpoint50g_post
2636    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
2637      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
2638      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
2639        made the default because of faster convergence than ADI
2640    
2641    checkpoint50f_post
2642    o exf totally restructured
2643      - replaced all exf_set_ routines by one generic exf_set_gen.F
2644        and made sure it's still differentiable
2645      - split exf_getffields.F into new exf_bulkformulae.F
2646      - exf_inscal_/exf_outscal_ suffixes consistent with field names
2647      - updated adjoint/makefile and relevant verif. accordingly
2648    
2649    checkpoint50f_pre
2650     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
2651          + change Evap over land. (update aim.5l_cs output)
2652     o added missing .cvsignores and made uniform across expts
2653     o changed configuration of tidal_basin_2d expt
2654     o added pkg/debug functions for tracing code in fatal crashes
2655     o tidied pkg/monitor to use MONITOR_OPTIONS.h
2656     o new fn in pkg/monitor to stop model if solution grows too big
2657     o removed lots of single quotes from comments
2658    
2659    checkpoint50e_post
2660    o make KPP work with PTRACERS
2661     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
2662       nearly a copy of kpp_transport_s
2663     - there is no analogue to SurfaceTendencyS, so I have to use
2664       gPtr(of the surface layer) instead
2665    o add a new platform SunFire+mpi (SunFire 15000) to genmake
2666    checkpoint50e_pre
2667    
2668    checkpoint50d_post
2669    o change kpp output from multiple-record state files to single-record state
2670      files analogous to write_state.F
2671    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
2672      analogous to the cg2d-related output.
2673    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
2674      so that writing to internal file fn (with length 512) fails.
2675    checkpoint50d_pre
2676    
2677    checkpoint50c_post
2678    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
2679    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
2680    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
2681    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
2682    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
2683    
2684    checkpoint50c_pre
2685    Merging from release1_p13:
2686    o bug fix for pkg/seaice dynamic solver
2687    o Added SEAICE_initialHEFF to pkg/seaice
2688    
2689    checkpoint50b_post
2690    o store u*,v* in gU,V instead of in guNm1,gvNm1
2691    o in order to put the momForcing out of the Adams-Bashforth:
2692      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
2693      to timestep.F
2694    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
2695    o re-generate output for highly sensitive test-exp:
2696       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
2697    
2698    checkpoint50b_pre
2699    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
2700    o corrected CPP option mismatch in exf_Bulk... functions for case
2701      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
2702    
2703    checkpoint50a_post
2704    o Bug fix for merging between c50 and KPP.
2705      ikey was passed from thermodynamics to kpp_calc via
2706      common block rather than being recomputed in kpp_calc,
2707      in contradiction with new key itdkey.
2708      New key ikppkey created, and tamc.h headers updated.
2709    
2710    checkpoint50
2711    - 2nd step of merge with ecco-branch:
2712      merge changes in ecco-branch back into main trunk
2713    - bug fix in find_alpha
2714    - more storing in gmredi_calc_tensor.F, kpp_routines.F
2715    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
2716    - merged some sliced AD support routines
2717    
2718    checkpoint49
2719    merged from ecco-branch:
2720    o exf:
2721      - Enable initialisation of forcing fields to constant
2722        (runtime) values.
2723      - in exf_getffields.F
2724        Reduce i-/j-loop to interior domain, discarding overlaps.
2725        That also fixes wrong TAF-key computations for key_1, key_2
2726        with bulf formulae.
2727      - exf_init.F modify #ifdef for exf_init_evap
2728      - exf_getffieldrec.F, ctrl_getrec.F
2729        The following INT-usages are not safe:
2730          fldsecs  = int(fldsecs/fldperiod)*fldperiod
2731          fldcount = int(fldsecs/fldperiod) + 1
2732        and were modified.
2733    o autodiff: checkpoint_lev...
2734      - updated storing for bulk formulae (some arrays were missing)
2735      - added state for seaice package
2736      - synchronized with main branch
2737    o DIVA:
2738      Modif.s in
2739      - the_main_loop.F
2740      - the_model_main.F
2741      and added cost_final_restore.F cost_final_store.F
2742      o With these changes, it is possible to fully separate
2743        the first forward run to compute the cost function (mdthe_main_loop)
2744        and adjoint runs over individual DIVA intervals (adthe_main_loop)
2745        into separate model executions.
2746        This enables better tuning of DIVA to given queue sizes.
2747      o Loss of cost function value in consecutive DIVA runs is
2748        fixed by storing to 'costfinal' file.
2749      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
2750        beginning/end of adjoint integration is accounted for.
2751      The current changes apply to TAF-1.4.26.
2752      TAF has one remaining bug, requiring one manual change
2753      (see MITgcm manual).
2754    o cal: synchronized between MAIN and ecco-branch
2755    
2756    checkpoint48i_post
2757    o Changes to restore differentiability of code w.r.t. previous tag
2758      (mostly adding new routines to make list and replacing
2759      pressure by totPhiHyd).
2760    o Updated and merged grdchk package
2761      - has both ADM and TLM checks
2762      - works for single- and multi-proc.
2763      - output cleaned
2764      - worked successfully for parallel DIVA
2765    o genmake:
2766      - Adding -platform=SP4
2767      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
2768    o Modif. for DIVA:
2769      ctrl_unpack should not be called in intermediate DIVA interval.
2770      (similar thing would apply for active files such as
2771      tbar, sbar, psbar, which should not be reinitialised;
2772      only relevant for ecco-branch)
2773    
2774    checkpoint48h_post
2775    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
2776    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
2777    o Added SEAICE_initialHEFF to pkg/seaice
2778    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
2779    
2780    checkpoint48g_post
2781    --- EOS:
2782    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
2783      store total Potential in totPhyHyd for diagnostics & EOS.
2784    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
2785    --- Pressure/geopotential gradient:
2786    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
2787    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
2788      ( changes results of global_ocean_pressure )
2789    o NLFS + z-coord.: add eta*Rho' contribution.
2790    o accurate phiHyd when using interface-W at the middle between 2 centers
2791     ( changes results of ideal_2D_oce )
2792    o includes r* 2nd term in potential gradient.
2793    
2794    checkpoint48f_post
2795    Merging from release1_p12:
2796    o Modifications for using pkg/exf with pkg/seaice
2797      - improved description of the various forcing configurations
2798      - added basic radiation bulk formulae to pkg/exf
2799      - units/sign fix for evap computation in exf_getffields.F
2800      - updated verification/global_with_exf/results/output.txt
2801    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
2802      (SBO) core products, including oceanic mass, center-of-mass,
2803      angular, and bottom pressure (see pkg/sbo/README.sbo).
2804    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
2805      to avoid negative values in shallow regions.
2806      - updated verification/natl_box/results/output.txt
2807      - updated verification/lab_sea/results/output.txt
2808    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
2809    o Added useSingleCpuIO option (see PARAMS.h).
2810    o Updated useSingleCpuIO option in mdsio_writefield.F to
2811      work with multi-field files, e.g., for single-file pickup.
2812    o pkg/seaice:
2813      - bug fix in growth.F: QNET for no shortwave case
2814      - added HeffFile for specifying initial sea-ice thickness
2815      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
2816    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
2817      kpp_transport_t.F, forward_step.F, and the_main_loop.F
2818    o pkg/seaice:
2819      - adjoint-friendly modifications
2820      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
2821    
2822    checkpoint48e_post
2823    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
2824    o dynamics: change definition of computational domain & adapt mom_fluxform
2825      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
2826    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
2827        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
2828        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
2829        global_ocean.90x40x15 global_with_exf global_ocean_pressure
2830        inverted_barometer solid-body.cs-32x32x1
2831      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
2832    
2833    checkpoint48d_post
2834    o in preparation for r*:
2835     a) use pre-computed gradient of hydrostatic potential:
2836        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
2837     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
2838        => affects results of glob_oce_pressure (different truncation error)  
2839      update output.txt of ideal_2D_oce & global_ocean_pressure
2840    
2841    checkpoint48d_pre
2842    o in preparation for r*:
2843      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
2844      pass the 2 comp. of the grad. as arguments to momentum S/R.
2845      but for the moment, only used if it does not change the results.
2846    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
2847    
2848    checkpoint48c_post
2849    Modifications in treatment of initial flux forcing controls
2850    to avoid extra storing of flux fields.
2851    
2852    checkpoint48c_pre
2853    o Added tidal_basin_2d experiment (currently 1D!)
2854    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
2855    
2856    checkpoint48b_post
2857    o r* coordinate added in #ifdef NONLIN_FRSURF block.
2858     (modification to pressure gradient not yet implemented)
2859    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
2860      (for U & V) that are used for vertical advection of momentum.
2861    
2862    checkpoint48a_post
2863    o In preparation for r*, use temp. array to compute vertical transport
2864       in flux-form momentum pkg. => change results of few test-exp.
2865      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
2866                        lab_sea, natl_box & plume_on_slope
2867    
2868    checkpoint48
2869    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
2870    
2871  checkpoint47j_post  checkpoint47j_post
2872  o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.  o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
2873  o moved adexch from forward_step to addummy_in_stepping  o moved adexch from forward_step to addummy_in_stepping

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