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revision 1.207 by dimitri, Thu Nov 13 06:35:13 2003 UTC revision 1.928 by jmc, Tue Dec 18 16:19:53 2007 UTC
# Line 1  Line 1 
1  $Header$  $Header$
2    $Name$
3    
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7  o modifications to make FREEZE flux visible to pkg/kpp  o pkg/salt_plume: added various options for salt plume depth
8      criterion and for vertical distribution of the salt
9    
10    checkpoint59l
11    o pkg/ptracers: new version of ptracers pickup:
12      read meta file and write only fields which are needed to restart.
13      ( same logic as main pickup file ; also using pickupStrictlyMatch )
14    o pkg/seaice:
15      - add timescale for melting due to warm mixed layer as a means of
16        setting SEAICE_availHeatFrac more conveniently
17      - add a CPP-flag/runtime parameter check for flooding algorithm
18      - reformulated availHeat in seaice_growth.F to be independent of AREA
19    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
20      unit changes
21    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
22    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
23      SX vector computer.
24    o pkg/seaice:
25      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
26        seaice forcing fields can now be read only through pkg/exf
27      - removed some unused halos
28    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
29    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
30      or U/VICE from U/VWIND before computing U/VSTRESS
31    
32    checkpoint59k
33    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
34      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
35    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
36      all experiments pass when compile with un-initialised var. checking option.
37    o added pkg/salt_plume
38    o script to test restart (for now, in MITgcm_contrib/jmc_script)
39    o pkg/seaice: new read/write pickup version.
40      read meta file and write only fields which are needed to restart.
41      ( same logic as main pickup file ; also using pickupStrictlyMatch )
42    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
43    o lab_sea.hb87: modify the domain & update output.hb87.txt :
44      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
45      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
46      process. Fixed here by closing the domain at the Northern boundary.
47    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
48    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
49      a set of consecutive levels in/from a 3-D array.
50    o pkg/ptracers:
51      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
52      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
53    
54    checkpoint59j
55    o in pkgs: dic, obcs, offline, rbcs:
56      standard way to compute coeff. for time interpolation between 2 time reccords
57      which retains full precision (& make results less dependent on compiler).
58      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
59    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
60      packages instead of reading ice cover and wind speed separately
61    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
62     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
63      to allow to compile customized code before the update)
64    o cleaning-up:
65      - fix CPP instruction syntax in pkg/obcs
66      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
67        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
68      - fix some threads issue in IO parts.
69    o pkg/dic:
70      - add tons of "_d 0" (--> much better testreports !)
71       and then update outputs of tutorial_global_oce_biogeo
72    o pkg/mom_fluxform:
73      add a special version of momentum advection intended to conserve momentum
74      next to a bathymetry step or a coastline edge. (default = off = #undef)
75    o new read/write pickup version:
76      - for now, only implemented for main (mdsio) pickup file.
77      - write out only what is needed to restart; merge pickup_nh , pickup_ph
78        and main pickup together.
79      - read meta file; read only what is needed to restart; stop if a field
80        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
81        if it make sense (even if the restart is not perfect).
82      - if no meta file, assume that pickup to read corresponds exactly to
83        a pickup that would currently be written.
84      - read pickup written in the old format (until checkpoint59i) if it
85        recognizes an old meta file (no field-list).
86      - add a meta file in exp. which starts from a pickup: 2 cases:
87        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
88         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
89        b) a meta file describing the content of the associated pickup file
90         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
91    o pkg/mdsio & pkg/rw:
92      - new routine to read a meta file ; new set of routine to read
93        Multiple-fields file (with meta file).
94    o added open boundary conditions capability for seaice
95        HSNOW, HSALT, UICE, and VICE
96    
97    checkpoint59i
98    o adjoint:
99      * fix multiDimAdvection adjoint
100        (partial recomputation problem by TAF for fVerT(:,:,kDown)
101        and comlev1 size definition (maxpass vs. max. number of tracers)
102      * verification/global_ocean.90x45x15 adjoint now tests
103        NLFS and multiDimAdvection using DST3 (=30)
104      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
105    o pkg/kpp: add "_d 0" to real constant (if missing);
106      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
107      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
108    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
109      for internal parameters related to restart process (formerly from PARAMS.h)
110      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
111    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
112      as argument. (only atm2d & obcs write_pickup have not yet been updated)
113    o pkg/monitor:
114      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
115      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
116      - account for deep Atmosphere factor and density factor (anelastic)
117    o added open boundary conditions capability for seaice HEFF and AREA
118    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
119      thermodynamics
120      - requires a little reorganization, which affects the testreport results
121        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
122        so that now the conservative form is tested
123      - add a few comments
124    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
125    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
126    o add new diagnostics to seaice: advective, diffusive fluxes (only for
127      multidim-advection, for scheme 2 they are not filled) and transports,
128      thermodynamic growth rates
129    o change units of EmPmR (inside the code, + within coupling interface)
130      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
131      Affects results @ truncation level (cg2d match) and update output of
132       experiments: lab_sea(6), global_ocean.90x40x15(10),
133      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
134      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
135      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
136      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
137    
138    checkpoint59h
139    o pkg/exf:
140      - improve vectorization by moving if-statement out of loops in
141        exf_mapfields, exf_radiation
142      - exf_bulkformulae.F: introduce 2D fields and vectorize code
143    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
144    o testreport:
145      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
146        monitor & update offline_exf_seaice exp. output.
147      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
148    o pkg/seaice:
149      - bug fix in the evp solver: boundary conditions were affected be
150        masking of zMax/zMin (changes results)
151      - minor bug fix in boundary conditions in seaice_calc_strainrates
152        (changes results for no_slip)
153      - seaice_lsr.F: make interpolation of eta dependent on boundaries
154      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
155      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
156        stress formulation and no-slip boundary conditions
157    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
158      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
159    o pkg/seaice: a first HSALT time stepping equation has been checked in
160    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
161      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
162      without requiring DO-IF statements
163    o pkg/thsice:
164      use continuous power-law function for partition of energy between lateral
165      melting/freezing and thinning/thickening ; old code using step function
166      still available with #undef THSICE_FRACEN_POWERLAW
167      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
168    o testreport: change AD testing : check against results/output_adm.txt
169      using same scripts as for forward test.
170    
171    checkpoint59g
172    o adjoint testing: in preparation for changing testreport:
173      - output format: cost and grad written on separated lines
174      - ad output results in directory "results" (instead of "results_ad")
175    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
176    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
177    o pkg/ecco: allow user defined cost function contributions
178    o testreport:
179      Allow to choose (per experiment) the list of tested output variables
180       and the main variable (used to issue a pass/FAIL ) ;
181      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
182      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
183      Also modify printing of summary:
184       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
185       b) echo the list of tested variables in the individual summary.txt of
186          each experiment.
187    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
188      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
189      (but still depend on the tile decompostion of the domain).
190    o pkg/seaice: change a discretization detail to make the B-grid code
191      "more symmetric". This change is likely to remove all "ridges/leads" that
192      where quasi-aligned with the grid in B-grid solutions. It may also be
193      the solution to the stress coupling issues with the B-grid.
194    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
195      remove .cvsignore from input dir. (since testreport no longer run here).
196    o pkg/thsice:
197     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
198     - fix reshaping of sea-ice just after advection:
199       melt all the ice only if ice-volume is too small.
200     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
201       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
202     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
203    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
204      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
205    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
206      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
207      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
208      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
209      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
210      -> update output.txt
211    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
212     this affects truncation error: -> update output.txt of exp:
213      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
214      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
215    
216    checkpoint59f
217    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
218    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
219      a bounded range (in forward mode)
220    o pkg/ecco, ctrl, autodiff and mom_common:
221     internal parameter controls, completements of implementations
222    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
223    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
224      (not seem any difference in testing results).
225    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
226       at face corners.
227    o pkg/generic_advdiff:
228     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
229      loop range indices for computing vertical advection tendency
230      and do the calculation in the interior only (no overlap) ;
231      for now, only implemented for SOM advection (to save CPU time).
232     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
233    o exch2 adjoint
234      First set of changes:
235      - add exch2 hand-written adjoint templates
236      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
237        This will require cleanup in pkg/autodiff/*.F
238        (changed routines currently kept separate in verif. code/)
239      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
240        that used to hide exch2 or cubed-sphere specific code
241        (commented via 'cph-exch2')
242    o pkg/seaice
243      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
244    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
245       output of global_ocean.cs32x15.thsice .
246    
247    checkpoint59e
248    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
249      for B-grid vector (not yet tested) and C-grid vector (<- only used
250      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
251    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
252      (#ifdef ALLOW_SALT_PLUME)
253    o gather_2d/scatter_2d: removed halo regions
254    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
255      scheme and the corresponding test case (under front_relax dir). For now,
256      only available with Skew-flux form and not yet tested in realistic set-up.
257      adjoint: store directives updated, but gradient checks deteriorated,
258      so maybe GM/Redi adjoint is now broken.
259    o seaice adjoint
260      * add AREA, HEFF, HSNOW as control variable
261        (should not change lab_sea results)
262      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
263    o pkg/seaice:
264      * added computation of saltFlux in seaice_growth;
265        For time being, sea ice salinity is assumed constant
266        contribution of snow flooding to freshening of sea ice is neglected.
267        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
268        defaults to 0.0 in order to maintain backward compatibility.
269        Typical values for SEAICE_salinity are 4 to 10 g/kg.
270      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
271      * added SEAICE_availHeatFrac, which specifies fraction of surface level
272        heat content used to melt or grow ice
273      * commented out cap of HICE: it helps keep ice thinner
274      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
275      * applied OBCS T/S mask to HEFFM sea ice mask
276    
277    checkpoint59d
278    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
279     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
280     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
281    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
282     and change default value of parameter "GM_Small_Number";
283     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
284       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
285       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
286    o pkg/ecco: cost function when applying pkg/smooth to controls
287    o pkg/ctrl: add forcingPrecond run time parameter
288    o pkg/seaice:
289     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
290     - fix bug in metric terms of u-equation in LSR solver (implicit part),
291       changes verification/lab_sea
292     - rearrange implicit part of u-equation in LSR solver to make it easier to
293       read, understand, and debug. This causes changes at the truncation level.
294     - fix (serious) bug in the boundary conditions (sign error in the implicit
295       part) of the LSR solver. Changes all LSR results.
296     - fixed problem with HSNOW initialization to avoid thick snow when AREA
297       is initilized with small values - does not change lab_sea results.
298     - added HsnowFile initialization capability
299    o pkg/smooth: addition to model/src and pkg/ctrl so allow
300     initialization of pkg/smooth and application to control vector
301    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
302    o dependencies: pkg/profiles requires pkg/cal
303    o pkg/profiles:
304     - added option ALLOW_PROFILES_GENERICGRID
305         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
306         that interpolation information (grid points and coefficients) is provided
307         within the netcdf input files.
308         -> sample matlab scripts can be found in MITgcm_contrib/gael
309         that allow you to prepare netcdf input files.
310     - also modified: cleaner include statements, cleaner error print statements,
311       cleaner stops when error, and more tests of the netcdf input files consistency.
312    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
313    o pkg/seaice:
314     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
315       requires a new routine: seaice_diagnostics_fill.F
316     - make sure that seaice does not move if not forced (pressure replacement
317       method, Hibler and Ip, 1995), changes results
318     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
319     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
320       It is turned off by default (=-1.), because it changes the results.
321     - make it possible to read AREA from a file, too.
322    
323    checkpoint59c
324    o add S/R and diagnostics for oceanic mixed-layer depth
325    o move GMRedi call after all vertical mixing schemes (including KPP)
326    o pkg/thsice:
327     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
328      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
329    o pkg/obcs:
330     - bug fix for balance code
331    o pkg/seaice:
332      - allow values of SEAICE_elasticParm > 1
333      - add new parameter SEAICE_evpTauRelax as an alternative
334        to SEAICE_elasticParm
335      - make lsr boundary conditions free slip (by default), changes result
336      - add code for no slip boundary conditions for lsr
337      - set minimum of zeta to zero (and not 4e8) (changes results)
338      - add a cap on AREA after advecting AREA if seaice_growth is not called
339    o change calculation of Visbeck K:
340      - no longer depend on tapering scheme; instead, compute slope (limited
341        by GM_maxSlope). this is equivalent to what was comuted before with
342        clipping or linear tappering.
343      - fix vertical averaging (wrong by 1/2 level)
344      - leave the old version (but will not be maintained) within
345        #ifdef OLD_VISBECK_CALC / #endif
346      - update output of exp. ideal_2D_oce
347    o change error catch in calc_r_star to improve vectorization
348    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
349      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
350    o adjoint:
351      Re-organized adjoint checkpointing according to Matt Mazloff
352      (but with modifs/completions/cleanups)
353      Storing is now bundled into large arrays to optimized I/O
354      (and second step in cleanup of the_main_loop)
355    
356    checkpoint59b
357    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
358      - export/import (between ocean & coupler) fields needed for ocean DIC.
359    o pkg/seaice:
360      - get rid of three more exchanges seaice_calc_viscosities (required
361        different loop boundaries in seaice_lsr and seaice_ocean_stress)
362      - bug fix in seaice_ocean_stress (update of lab_sea required)
363      - reduce loop boundaries to necessary minimum also in seaice_evp
364      - go back to the old way of computing deltaC/Z as the adjoint likes that
365        better
366    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
367      passive tracer to an Age Tracer) + update output.txt
368    o pkg/exf:
369      - implement A-grid / C-grid selection for wind-stress input files.
370      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
371      for now, in exf_bulk_largeyeager04.F only :
372      - change implementation for case where windspeed + 2. components wind-stress
373        are read-in. AND use rhoConstFresh to convert evap.
374    o pkg/seaice:
375      - use correct EXCH_UV for wind-forcing (on A-grid).
376      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
377        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
378    o pkg/exf:
379      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
380      EXF_INTERPOLATION:
381      - merge global_with_exf/code version of exf_interp_read.F
382        to the main code ;
383      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
384        reading the file ; Important: This options needs to be defined to recover
385        previous code.
386        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
387      - no longer loose real*8 precision along the way when using exf_iprec=64.
388    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
389      - change discretisation of evp-solver in order to avoid another exchange
390        (changes lab_sea) and clean up a little
391      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
392        help the adjoint (this also changes the results slightly)
393      - add a few "_d 0" where they had been missing in seaice_evp.F
394      - cleaning up: remove unused seaice_calc_rhs.F
395    o pkg/exf: some cleaning-up:
396      - change various "constants" into runtime parameters
397      - cleaned-up Large&Yeager04 routine which should eventually
398        replace exf_bulkformulae.F (changed names of S/R and CPP)
399        and merged various ALLOW_ATM_WIND options
400     only used with thsice pkg (in thsice_get_exf.F):
401      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
402        which are used when useStabilityFct_overIce=TRUE (= the default)
403      - change default values of ice & snow emissivity and scale downward LW
404        by ice & snow emissivity.
405    o pkg/thsice:
406     fix few little problems, in thsice_calc_thickn.F:
407      - growth vertically (and not laterally) if iceFrac == iceMaskMax
408      - melt only laterally if hIce < hThinIce (as the comments say)
409      and in thsice_extend.F:
410      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
411      - start to form ice as soon as the minimum ice-volume is reachable.
412     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
413      and cpl_aim+ocn
414    o pkg/kpp
415     - move computation of surface related input fields to KPP into a new
416       subroutine kpp_forcing_surf.F
417     - remove wrong (within bi,bj loops) EXCH calls.
418     - little cleaning (add argument myThid in last position, cvs header ...)
419     - for now, fix conservation problem by exchanging KPPviscAz (may not
420       be the best fix)
421    o pkg/seaice
422     - check for inconsistent evp parameter/cpp-flag combination
423     - remove leftover errIO flat for obsolete name list error handling
424    o OpenAD
425     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
426    
427    checkpoint59a
428    o pkg/seaice: some parameter clarifications and a little bit of clean up
429    o pkg/thsice: rename run-time parameters:
430       himin       -> hIceMin
431       himin0      -> hThinIce
432       hihig       -> hThickIce
433       i0          -> i0swFrac
434       transCoef   -> bMeltCoef
435       frac_energy -> fracMelting
436      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
437       with default values (for now) that do not change the results.
438      remove old version of thsice vars advection in pkg/seaice.
439    o in FFIELDS.h:
440      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
441      - make pLoad & sIceLoad always available (but still only used if
442         ATMOSPHERIC_LOADING is #define).
443    o pkg/kpp: replaced _KPP_RL with _RL
444    o bug fixes for vertical diffusivity computations when both KPP and
445        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
446        are no longer updating the vertical diffusivity array
447        (passed as argument) but are (re-) setting those arrays.
448    o pkg/seaice: fix bug in evp solver, while doing that
449      - change (improve?) discretization of stress computations for both
450        cgrid-lsr and evp solver
451      - add a new routine to compute strain rates
452      - the above changes lab_sea results
453      - add no slip conditions for evp solver (off by default), lsr-version
454        may follow
455      - fix exchange for shear at Z-points (does not change lab_sea)
456      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
457        (to force the user to pick a time step since there is not "safe" way
458        of choosing it)
459      - add principal stress diagnostics
460      - rearrange fields for evp a little to avoid having to call a: too many
461        exchanges and b: exchanges for stress trensor components which we do
462        not have.
463      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
464        of evp, complete rewrite for lsr case (latter is does not yet work
465        in all cases)
466    o pkg/kpp: add code to have mixing in shelf ice caverns
467      - add myThid to all kpp routines (long overdue)
468    
469    checkpoint59
470    o pkg/exf:
471      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
472        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
473      - move exf header files from lower_case.h to UPPER_CASE.h ;
474        add missing cvs Header & Name
475      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
476      - add namelist param. selectStressGridPosition, exf_monFreq
477      - retire many _CLIM routines, and remove data.exf_clim
478        + params moved to data.exf
479        + climsst, climsss now handled by exf_set_gen, i.e.
480          climss?period=0 refers to constant field,
481          climss?period=-12 to monthly forcing
482      - split up namelists in data.exf
483    o pkg/seaice:
484      - remove seaice_exch and seaice_exch_uv
485      - remove superfluous exchange of theta
486      - add myThid to seaice_budget_ocean/ice
487      - add new interface for atmospheric wind forcing (C-grid only)
488        + new routine
489        + two new field (taux, tauy for stress over ice)
490        + removed one global field (DAIRN) for C-grid case only
491    o pkg/thsise
492      - 2nd set of modifs for thsice adjoint in conjunction with exf
493    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
494    
495    checkpoint58y_post
496    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
497      vertical diffusivity, similar to that in MOM4; turned on using
498      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
499      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
500    o Added capability for 3D specification of background vertical diffusion
501      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
502      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
503      "data" file that contains the 3D vertical diffusivity coefficients.
504    o ice dynamics (pkg/seaice) with thsice thermodynamics:
505      - add code within pkg thsice to advect & diffuse sea-ice fields
506      similar to (and will replace) what has been added in  seaice_advdiff.F,
507      but: - conserving Mass, Heat & Salt.
508           - better when using non-linear advection scheme (not yet fully tested)
509           - can also be used in atmospheric set-up (for now, only the diffusion).
510    
511    checkpoint58x_post
512    o IO option for global-file compact format:
513      - add options when generating topology (utils/exch2/matlab-topology-generator)
514      - add I/O capability (pkg/mdsio).
515      - adapt utils/matlab/rdmds.m to read this format.
516      for now long-line format not yet supported by pkg/mdsio (& exch2).
517    o shelfice: add a few diagnostics
518    
519    checkpoint58w_post
520    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
521      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
522      (and replace horiVertRatio in NH code).
523      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
524                         and tutorial_plume_on_slope (sensitive to truncation)
525    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
526      directly to drive seaice model (C-grid only)
527    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
528     - reintroduce computation of wind from stress,
529     - compute tau (in exf_bulkformulae.F) from windstress averaged to
530       mass points to avoid tau = 0
531     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
532    o rdmnc.m: make it work with "global" files created with gluemnc
533    o rdmnc.m : some improvements in dealing with singleton dimension
534      (tested on all testreport mnc output files).
535    o genmake2: disable pkg/profiles if netcdf test fails.
536    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
537    o move call to cal_readparms up to make calendar parameters/variable available
538      to all packages
539    
540    checkpoint58v_post
541    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
542      useDynP_inEos_Zc tested.
543    o pkg/exf: changes to properly interpolate/mask/scale initial fields
544    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
545      and portions thereof.  See read_cs.txt for description and examples.
546    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
547      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
548      following the great-circle arc between those 2 points.
549    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
550      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
551    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
552     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
553     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
554     - still needs work (not working with some options ; efficiency to improve)
555       and serious testing.
556     - use this scheme for temperature & salinity in 2 advection test exp.:
557       advect_xy & advect_xz, respectively.
558    
559    checkpoint58u_post
560    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
561    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
562    o testreport: add option "-skipdir" to skip some test.
563    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
564      momentum calculation.
565    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
566    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
567      remove checkpoint.F and the_correction_step.F (no longer used);
568      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
569    o add option (linFSConserveTr) to correct for tracer source/sink due to
570      Linear Free surface
571    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
572    o pkg/thsice: fix reading mnc-pickups
573    
574    checkpoint58t_post
575    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
576    o pkg/mdsio:
577     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
578       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
579       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
580     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
581     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
582       either MDS_READ_FIELD or MDS_WRITE_FIELD )
583     - new S/R (to replace MDSWRITEMETA), which allows to write more
584       informations (variable names, time ...) to meta files.
585     - modify rdmds.m to give back the meta file content.
586    o pkg/diagnostics: change vertical interpolation to be safer, and more
587       flexible (define p-levels to interpolate to in data.diagnostics);
588      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
589       diagnostic pointer.
590    o pkg/seaice: more cleaning up of seaice_growth, added many comments
591    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
592    o fix multi-category seaice:
593     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
594       SEAICE_MULTICATEGORY
595     - fix short wave heat flux
596    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
597       and allow to use EVP solver. Change forward lab_sea: test both EVP
598       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
599    o Initial check-in of lab_sea adjoint
600      (very similar to natl_box_adjoint/code_seaice)
601      * used C-grid and EVP solver
602      * used KPP, GM/Redi
603      * uses inAdExact=.TRUE.
604      * gradient checks fail for both ADM and TLM
605        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
606        f.d. gradients actually seem more problematic than ADM, TLM gradients;
607        issue is related to forward mismatch between g77 an ifort
608    o pkg/seaice: overhaul of thermodynamics
609     - growth.F and groatb.F are replaced by new routine seaice_growth.F
610     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
611     - move a few global fields out of SEAICE.h into seaice_growth.F and
612       make them 2D (FICE/QNETO/ ...)
613     - remove FO (it is the same as QNETO)
614     - introduce a few local fields to avoid modifying external fields such
615       as atemp, etc.
616    
617    checkpoint58s_post
618    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
619      changed exf_set_gen.F so that
620        genperiod=0 means input file is one time-constant field and
621        genperiod=-12 means input file contains 12 monthly means
622    o CG2D: use pre-computed solver main-diagonal (stored in common block);
623      this affects truncation error ; generate new output file for exp. which
624      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
625        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
626        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
627        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
628        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
629        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
630    o start implementation of deep-atmosphere and anelastic formulation
631    o verification: remove 2nd copy of input files and use script "prepare_run"
632      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
633    o mom_common/vecinv/fluxform: fix a few initialisation isssues
634    o profiles: fix for multithreaded case
635    
636    o diagnostics: rename few diags:
637      s/'PRESSURE'/'RCENTER '/g
638      s/'TICE    '/'oceFreez'/g
639      s/'TAUX    '/'oceTAUX '/g
640      s/'TAUY    '/'oceTAUY '/g
641      s/'SWFLUX  '/'oceQsw  '/g
642      s/DIFx/DFxE/g
643      s/DIFy/DFyE/g
644      and add few ocean-forcing diagnostics:
645      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
646    o modifications to pkg/seaice/growth.F and budget.F, which change results of
647      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
648      as actual snow thickness.  It now refers everywhere to effective snow
649      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
650    
651    checkpoint58r_post
652    o modifications to pkg/seaice/growth.F, which change results of
653      lab_sea experiment: fixes pertain to melting snow over open water, to
654      masking EVAP under sea ice, and to using the correct AREA variable for
655      computations of EVAP, PRECIP, HSNOW, and GHEFF
656    o add ability to read bathy, salt, and theta using MNC (off by def)
657    o add flooding algorithm and advection of HSNOW for pkg/seaice;
658      both are turned off by default and do no change any results
659    o seaice advection with pkg/thsice: a step toward the use of non-linear
660      advection scheme, but #ifdef or commented out for now (requires more EXCH).
661    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
662      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
663      in natl_box (affects results @ truncation level: update output.txt)
664    o multi-threading and IO:
665      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
666      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
667        (needed to work with SingleCpuIO): tested in all verif. exp.
668    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
669      affects the results (but none of the verification test uses this scheme).
670    o Adding some pkg/diagnostics capability to pkg/seaice
671      (will certainly be subject to changes)
672    o ctrl: adding new control variables:
673      lwflux, lwdown, evap, snowprecip, apressure, runoff
674    
675    checkpoint58q_post
676    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
677      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
678      high_res_cube configuration by 4% on Columbia.
679    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
680      add (in global_with_exf/code) a version of EXF_INTERP_READ without
681      dynamical allocation (seems to work in multi-threaded).
682    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
683      single CPU io) so that TAF does not have to see EESUPPORT.h
684    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
685    
686    checkpoint58p_post
687    o obcs: stop if obcs is used with useCDscheme = .true.
688    o shelfice:
689     - fix a sign error so that no slip at shelfice interface works
690     - remove stop for combination non-hydrostatic code and shelfice. That does
691       not mean, that the results are correct, but at least they are numerically
692       stable
693    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
694    o added adjoint exch routined for all exch*3d* routines
695      and updated flow directives
696    
697    checkpoint58o_post
698    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
699      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
700    o change controling S/R for writing pickup file (new S/R do_write_pickup)
701      and clean-up reading/writing of pickup files.
702    o fix local version of read/write pickup (NH part) in rotating_tank/code
703    o simplify EXCH interface:
704     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
705     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
706    o added the regrid package
707    o shelfice:
708     - add a simple boundary layer scheme to reduce noise
709     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
710    
711    checkpoint58n_post
712    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
713       local variable (not in common block).
714    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
715      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
716      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
717        to work with SingleCpuIO.
718    o add "_d 0" to real constant of pkg/cfc subroutines ;
719       update exp. cfc_exemple & tutorial_cfc_offline output files.
720    o multi-threading and IO:
721      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
722        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
723      - barrier before and after reading.
724      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
725      - avoid using MDS_WRITELOCAL for LAND pkg output.
726      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
727        common-block variables ; Allows multi-threading with master-thread IO.
728    o change default MAX_NO_THREADS from 32 to 4 ;
729      and stop cleanly when MAX_NO_THREADS is too small.
730    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
731    
732    checkpoint58m_post
733    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
734       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
735    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
736       keep global_ocean.90x40x15 (for AD testing) with former secondary test
737       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
738    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
739        add MITgcm_tutorials (= code + all the tutorials)
740    o ecco, option to compute cost for total ssh (mean+anom)
741    o consistent with addition of ptracer and ssh in pkg/profiles
742    o profiles: adding ptracer and ssh
743    o testreport: change multi-test output-file name
744      (from output.txt.{name} to output.{name}.txt)
745    o profiles: now ok for mutli-tiles case
746    o seaice: add 4 parameters for different advection schemes for area,
747      (effective) seaice thickness, enthalphy, and snow height. Their default
748      is the standard parameter SEAICEadvScheme
749    o calc_gw:
750     - add cosFacU in zonal viscous flux (harmonic.visc.).
751     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
752       of tutorial_plume_on_slope.
753    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
754    o calc_gw: true flux-form, account for horizontal grid spacing.
755      update rotating_tank results, but not plume_on_slope (affected at
756      truncation level, 11 digits).
757    
758    checkpoint58l_post
759    o calc_gw:
760     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
761     - remove side-drag for now (need to fix it); update plume_on_slope results.
762     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
763    o commit code to make SST/SSS weights spatially variable
764      (based on either variable in-situ or variable initial T/S weights)
765    o pkg/ecco:
766      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
767        now based on horizontally varying weights wthetaLev, wsaltLev
768      * cost_averagesflags now returns year indices in addition to day, month
769      * sflux balance is performed on annual basis
770        (sflxumm, sfluxmm2, bal_sfluxmm)
771      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
772        including separate counting and multipliers
773    o pkg/rbcs
774      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
775    
776    checkpoint58k_post
777    o testreport:
778     - always build in dir. "build" (if not there, mkdir build instead of building
779       & running in input)
780     - run in dir run (if it exists), in build otherwise.
781     - call prepare_run (if input/prepare_run exists)
782     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
783    o pkg/exf modifications to interpolation and rotation routines for more
784       reasonable treatment of North Pole singularity: for tracers North Pole
785       value is set to northernmost zonal-mean value, for zonal velocity it is
786       set to zero, and for meridional velocity it is set to northernmost value.
787    o pkg/exf/exf_check_range.F
788     - add tile index to diagnostics and move stop statement to the very
789       end of the routine.
790    o pkg/diagnostics: (diagnostics_main_init.F)
791      define title of isomorphic variables according to the current config.
792    o pkg/thsice with pkg/seaice dynamics:
793    - fix domain of computation (interior only, required for exf) and do exchanges
794    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
795    o towards a standard way of dealing with multi-threading in MONITOR
796      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
797    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
798       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
799    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
800    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
801    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
802       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
803    o tracer advection:
804     - clean-up and simplify calc_common_factors.F
805     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
806       advection subroutine (but still not used within DST advection S/R)
807    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
808    
809    checkpoint58j_post
810    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
811      from file (collects calls previously in FORWARD_STEP)
812    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
813    o adjoint store dir. adjusted accordingly
814    o genmake2
815      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
816    
817    checkpoint58i_post
818    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
819      on wind stress (SEAICEstressFactor defaults to 1.)
820    o Total number of Timers is finite (<=40): comment out 2 non-essential one
821      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
822    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
823      on CS-grid: no longer loosing mass.
824    o exf & curvilinear-grid: no longer modify longitude xC & xG.
825    o pkg/ggl90: fix sloppy output and fix a bug
826    o pkg/seaice: added SEAICEuseEVPpickup parameter
827      - Set to false in order to start EVP solver with
828        non-EVP pickup files when using SEAICEuseEVP
829      - fix sign error in diffusion in seaice_calc_rhs
830    
831    checkpoint58h_post
832    * Modifications for bottom topography control
833      o replace hFacC by _hFacC at various places
834      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
835      o add non-self-adjoint cg2d_nsa
836      o update autodiff support routines
837      o re-initialise hfac after ctrl_depth_ini
838      o works for 5x5 box, doesnt work for global_ocean.90x40x15
839    * Adding verification for 5x5 box (4-layer) bottom topography control
840    
841    checkpoint58g_post
842    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
843       used for mean seasonal cycle, mean diurnal cycle); add an example
844       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
845    o pkg/ggl90:
846      - add parameter (minimum surface kinetic energy)
847      - fix bug (avoiding division by zero)
848    o couple pkg/thsice to pkg/seaice:
849      - modify advection in seaice to accomodate new scalar fields to be advected
850      - only muliDimAdection scheme work with seaice/thsice
851      - mapping of thsice-variables to seaice-variables, back and forth
852      - does not break the verification experiments, but does not give the
853        desired results either
854    o pkg/seaice
855      - make (default) second order advection a bit less confusing?
856    
857    checkpoint58f_post
858    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
859      to pkg/seaice):
860      - new routines thsice_map_exf and thsice_get_exf provide the interface
861      - add an additional formal parameter to thsice_solve4temp
862    o pkg/exf:
863      - add new fields wspeed, snowprecip (to be able to couple to thsice)
864      - correct Stefan-Boltzmann constant
865      - new parameter for longwave surface emittance
866      - separate some stuff from exf_bulkformulae into new routines  
867        exf_radiation, exf_wind
868      - add new parameters and constants: longwave emissivity for ocean, ice
869        and snow, evaporation parameters over ice
870      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
871        either wind from stress or stress from wind
872    o pkg/thSIce:
873    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
874    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
875       and THSICE_CALC_THICKN
876    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
877    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
878      to make debugging easier.
879    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
880    o pkg/bulk_force:
881      - clean-up comments and parameters ;
882      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
883    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
884      generate new output for test-experiment: aim.5l_cs.thSI
885    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
886      testreport accordingly
887    
888    checkpoint58e_post
889    o SEAICE_CGRID adjoint done
890    o R_STAR adjoint implemented.
891      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
892      * need to sort out init. of h0facc, etc.
893    o Make pkg/profile fully independent of ecco,cost, etc. stuff
894      to be able to use it in pure forward.
895    
896    checkpoint58d_post
897    o upgrade simple test-experiment to tutorial example:
898     step.1: duplicate the experiment and (step.2) will remove the old copy.
899      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
900      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
901      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
902      tutorial_global_oce_biogeo    <- copy of dic_example
903      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
904      tutorial_plume_on_slope       <- copy of plume_on_slope
905      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
906      tutorial_global_oce_optim     <- empty for now (David ?)
907      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
908     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
909    o correct a sign problem in cost_scat.F
910    o obcs and ptracers: fix boundary conditions for advections schemes
911      with larger stencil
912    o thsice adjoint: start
913    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
914      completeness
915    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
916      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
917    o ptracers adjoint:
918      * avoid extensive recomputatations
919      * fix missing re-init. of gptr (missed by TAF)
920    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
921      me to turn off the excessive output to STDOUT that this package produces
922    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
923      and add those terms in Vector-Invariant formulation.
924    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
925      if the control period (xx_hfluxperiod etc) is 0
926    o in profiles pkg, clean routines and fix details
927    o in ecco pkg, reading ssh data:
928      fix problem in case the model does not start at iter0=0
929    o fix mnc-pickup/restart for ptracers
930    o new package prifiles:
931      code to compute profile-based cost by Gael Forget
932      (modifs in ecco, ctrl, autodiff)
933    o Benign bug fix in initialization (spotted by M. Mazloff) of
934      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
935    
936    checkpoint58c_post
937    o adjoint: finish NLFS adjoint and provide reference output in
938      verification/global_ocean.90x40x15/results_ad_nlfs
939    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
940      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
941      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
942      with SEAICE_CGRID defined.
943    o move calendarDumps from "data" to "data.cal" and clean-up the code
944      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
945    o add useEXF & useCAL flags (for now, set in hard-coded way)
946    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
947      (were missing in NH mode, and wrong in quasihydrostatic mode).
948      waiting for Chris updated version of calc_gw to add those CALLs.
949    o fix bug in quasihydrostatic S/R ;
950      add a test for this option: global_ocean.90x40x15.qshyd
951    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
952      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
953    o add on/off flag useOffLine for package OFFLINE
954    o seaice:
955      - modify advection so that it works also on the C-grid
956      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
957        problem in multi-tile runs with C-grid
958      - add flags for clipping ice velocities and/or masking solver forcing
959      - fix drag (ocean on ice) formulation and a bug that caused noise in the
960        C-grid solver
961      - added a few comments to seaice_diffusion.F
962      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
963        are now exclusive)
964      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
965        required re-ordering the code a little:
966       + make DAIRN global variable (defined in SEAICE)
967       + move computation of the viscosities eta and zeta into a new separate
968         routine (because I need to recompute them in seaice_ocean_stress.F)
969    
970    checkpoint58b_post
971    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
972      update output.txt of exp. aim.5l_cs.thSI
973    o various mnc cleanups and improvements:
974      + shrink lookup tables by factor of ~4
975      + better error reporting when running out of lookup space
976      + able to handle longer path/file names (up to 500 chars)
977    o adjoint:
978      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
979      - TBD: "hidden" mom_vecinv recomp. in dynamics
980    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
981     (allow to differentiate between forcing components using new integer flags:
982      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
983     and add new flag to put Dissipation tendency out of Adams-Bashforth.
984    o ecco
985      - enable trend removal from SSH anomaly obs.
986    o adjoint
987      - a fix for PmEpR when #undef EXACT_CONSERV
988      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
989      - try to fix "hidden" recomp. in forward_step for NLFS
990        (NLFS seems broken sometimes after I checked it in)
991    o seaice:
992     - add c-grid version of the dynamic solver:
993       + three new routines that are the c-grid substitute lsr, dynsolver
994         and ostres
995       + put a few fields that were local to dynsolver into global common
996         blocks, so that I can move the computation of stresses etc into
997         seaice_lsr (saves coding but may break the adjoint).
998     - replace more hardwired parameters by runtime parameters
999     - add ice masks that mask the rhs of the implicit solvers where there
1000       is no ice (commented out in seaice_dynsolver, because i am not sure
1001       if this works properly), eventually this should replace the clipping
1002       of ice velocities in seaice_dynsolver to +/-40cm/s.
1003    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
1004      include it only where its needed
1005    o move balancing of fluxes before the call of external_forcing_surf
1006    o seaice:
1007      - correct units of turning angles (now they are really in degrees)
1008      - move computation of GWATX/Y out of main routine into dynsolver
1009      - initialize GWATX/Y in seaice_init
1010    o Apply mask on Fresh-Water flux (needed for SSH forcing).
1011      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
1012    o seaice: add runtime flags for turning angles (default to zero)
1013    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
1014      and trend from exf forcing and ctrl control adjustments
1015    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
1016      (since checkpoint57x_post)
1017    o change the default rotation period to 86164.s = the Earth rotation
1018    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
1019      and based on a reference stratification. Tested within hs94.cs-32x32x5.
1020    o seaice advection: add code for choosing between the default (2nd order
1021      central differences) and multiDim advection schemes provided by
1022      pkg/generic_advdiff
1023    o seaice:
1024      - removed all references to SEAICE_GRID.h fields from
1025        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
1026        (cubed-sphere configuration will change a little)
1027      - grid computations in seaice_init are obsolete now.
1028      - cleaned up code a little so that is easier to read (hopefully).
1029      - added new (better?) discretizations of default advection and diffusion
1030        (turn on with SEAICEuseFluxForm)
1031      - replace 1 in 3d global fields by kSurface in growth.F
1032      
1033    checkpoint58a_post
1034    o seaice:
1035      - bug fix in advect.F
1036    o shelfice:
1037      - separate shelfice load anomaly from pload (breaks with time
1038        dependent forcing), => introduce constant field shelficeLoadAnomaly.
1039        Its default is 0., but it may be computed more cleverly from (unknown)
1040        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
1041        done offline. A good approximation of the pressure load anomaly is
1042        necessary to avoid large initial adjustment processes underneath
1043        deep-reaching shelfice.
1044      - small fix in ISOMIP shelfice_thermodynamics
1045      - add more sophisticated thermodynamics of Hellmer (1989), this is
1046        now the default
1047      - give a few constants more intuitive names
1048    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
1049      if bulk formulae are used in long integration (especially EmPmR). Turn
1050      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
1051      if balancePrintMean, the imbalance that is substracted is printed to
1052      STDOUT.
1053    o fix bug (typo) in obcs_apply_eta.F
1054    o add a new package shelfice which enables us to model the circulation
1055      underneath shelf-ice with draughts of hundreds of meters.
1056     - works
1057     - to do: + include improved thermodynamics
1058              + check whether kSurfC (from model/inc/SURFACE.h) can be used
1059                instead of new field kTopC
1060              + can we use topoFile, Ro_surf and existing code in ini_depth.F
1061                instead of new field R_shelfIce and new code in ini_depth.F
1062                and ini_mask_etc.F?
1063              + adjust vertical mixing schemes?
1064    o seaice pkg:
1065     - add a cpp-flag to include a simple formula for a salinity dependent
1066       freezing point of sea water at the surface
1067     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
1068       meridional stresses are now different (and hopefully correct)
1069    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
1070       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
1071       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
1072    o pkg/diagnostics: add options and parameters for regional-statistics
1073       diagnostics ; define regions by reading a region-mask from a file
1074       (might add other options later)
1075    o pkg/bulk_force:
1076     - add option and parameters to use AIM surface-flux formulae.
1077     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
1078       others forcing fields (defined in PARM05, parameter file "data") are loaded
1079       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
1080     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
1081     - use the right EXCH call for uwind,vwind (to work on CS-grid).
1082     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
1083       and parameters (note: calcWindStress replaces .NOT.readwindstress).
1084     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
1085    
1086    checkpoint58
1087    o add "--embed-source" option to genmake2 which, when the supporting
1088      tools can be compiled (as determined by genmake2) will turn on the
1089      embed_files package which then embeds the entire MITgcm source code
1090      (*.[fFhc] + Makefile) used for the build within the executable
1091      - requested by CNH but off by default
1092      - adds a paltry <9MB to the mitgcmuv executable in most cases
1093      - only writes the output when useEMBEDSRC in eedata is true
1094    o clean up 3-dim. relaxation codes:
1095      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
1096      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
1097      * Thanks to Tom Haine for testing!
1098    
1099    checkpoint57z_post
1100    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
1101      affects output (@ truncation level) of exp. plume_on_slope ; updated.
1102    o fix the pickup behavior for obcs in combination with ptracers
1103    o fix a bug in ptracers_external_fields_load
1104    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
1105      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
1106    o transfered surface NH pressure to eta field (if exactConserv).
1107    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
1108         and update lab_sea output.txt file.
1109    o completing 3-dim. relaxation code: additional term
1110         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
1111      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
1112      * At compile time, in "EXF_OPTIONS.h" set
1113          #define  ALLOW_CLIMTEMP_RELAXATION
1114          #define  ALLOW_CLIMSALT_RELAXATION
1115      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
1116          tauThetaClimRelax3Dim = 15552000.0,
1117          tauSaltClimRelax3Dim  = 15552000.0,
1118      * 3 cases:
1119          1) Use a constant-in-time 3-dim. field
1120          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
1121          3) Real-time relax. to time-evolving prescribed field
1122    o Adding Laplacian-type smoothness constraint on
1123      initial and boundary (forcing) controls (ic, bc)
1124      * enable at compile-time via
1125        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
1126      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
1127      * Absolute scale somewhat unclear so far
1128      * no area weighting was included since no other cost term does so far
1129    
1130    checkpoint57y_post
1131    First step for a NLFS adjoint
1132    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
1133    o new init. routines for calc_r_star, calc_surf_dr
1134    o still need to deal with ini_masks_etc
1135    o testreport seemed happy
1136    checkpoint57y_pre
1137    
1138    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
1139    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
1140    o add new offset feature to offline pkg (plus minor cleanup)
1141    o cfc fixes for final year of integration
1142    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
1143      be in GCHEM_OPTIONS).
1144    
1145    checkpoint57x_post
1146    o fix testreport Pb in multiple test experiment.
1147    o cleanup our namelist syntax in verification:
1148      - make it more F95 standards compliant (some work still needed)
1149      - allows the vast majority of our tests to work with gfortran
1150    o Non-Hydrostatic:
1151     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
1152     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
1153    o Allow to apply AB on T,S rather than on AB(gT,gS):
1154     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
1155     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
1156       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
1157     - need a "clever" read_pickup to restart from the other AB formulation
1158    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
1159    o remove some unused variables (reduces number of compiler warnings)
1160    o adjoint
1161      * Disable useVariableViscosity for adjoint for time being
1162        (there are a number of extensive recomputations)
1163      * Initialize certain variables needed for adjoint
1164    
1165    checkpoint57w_post
1166    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
1167                 fix the singleCpuIO RS version of MDSWRITEFIELD
1168       and add a WARNING if using globalFiles=T with multi-processors.
1169    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
1170      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
1171    o tracer advection scheme:
1172      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
1173       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
1174       was not very convenient).
1175      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
1176       (further tests needed for the implicit DST & Flux-Limiter schemes).
1177    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
1178      and sRef for convenience, handy, when you want to initialize
1179      ptracers in a large domain with a constant non-zero value. Also,
1180      untangle ptracers_init.F a little.
1181    
1182    checkpoint57v_post
1183    o change dome exp. to use variable viscosity in side-drag terms.
1184    o remove all the files from the cfc_offline test since they are now
1185      incorporated into tutorial_cfc_offline which has been producing
1186      identical results for a few days of testing
1187    o add new parameter: sideDragFactor to enable half-slip-side BC
1188      and change side-drag S/R to use viscosity from mom_calc_visc
1189      (can switch back by setting sideDragFactor=0.); affects results at
1190      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
1191       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
1192    o vorticity & strain are now computed without masking, to account for
1193      no-slip-side BC in variable viscosity calculation ; mask is applied
1194      anyway later on, before computing advection/coriolis terms.
1195    o modify exp4 to test new obcs support for reading from external files
1196      and for passive tracers
1197    o fix behavior of ptracers_monitor when monitor output is written to a
1198      netcdf-file; still not independent of monitor.F (writes in the same
1199      file).
1200    o change default value of tRef (put a uniform, meaningful value for ocean
1201      & atmos) and initialize sRef (was missing, as Martin mentioned).
1202    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
1203      to be proportional to enstrophy dissipation length.  Thus,
1204       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
1205      This is now consistent with Smagorinsky and with the manual.
1206    
1207    checkpoint57u_post
1208    o OBCS and PTRACERS: add open boundary support for passive tracers
1209      - either use homogenous (pseudo) v.Neumann conditions or prescribe
1210        OB-values from file; this is not different from the way theta and salinity
1211        are treated
1212      - however, Orlanski-radiation conditions are not supported, and the model
1213        will stop if you use pTracers and Orlanski at the same time.
1214      - beefed up the rountine obcs_external_fields_load: now only those open
1215        boundary values are overwritten with values from files for which there
1216        are really files, otherwise the OB-fields remain untouched. This makes
1217        it possible to use different OBs at different ends of the domain (as
1218        with EXF)
1219    o reduce number of exch calls in shap_filt (s2).
1220    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
1221      truncation level) 4/5 MLAdjust test results (11&12 digits match).
1222    
1223    checkpoint57t_post
1224    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
1225    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
1226      same truncation, independent of the face number: affects affects several
1227      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
1228    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
1229      note that biharmonic viscosity + no-slip was not tested in any experiment.
1230    o fix bug in non-linear free-surf side-drag ; generate new output for
1231      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
1232    o make mnc honor the writeBinaryPrec flag for most kinds of output
1233    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
1234    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
1235      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
1236    o add brackets in multi-terms sum to get same truncation, independent of
1237      the face number (manage to get exactly same value of gU,gV at the cs-edge)
1238      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
1239    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
1240      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
1241      a maximum grid-scale Reynolds number.  Also, changes all length calculations
1242      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
1243      Suggested values of viscosity parameters found in mom_calc_visc.
1244      Many new viscosity diagnostics available.
1245    
1246    checkpoint57s_post
1247    o Add clearing-house for viscosity calculations, mom_calc_visc and
1248      correct numerous bugs in LeithD and Smagorinsky discretizations.  
1249      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
1250      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
1251      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
1252      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
1253      The Strain-Tension form is now called with useStrainTensonVisc=.true.
1254      ViscAhStrain and viscAhTension are now retired.
1255    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
1256    o In response to JMC's bug report, genmake2 now ignores any soft-links
1257      that it finds in the *current* directory when searching for files.
1258      Soft-links found in any other source directories will still work as
1259      they did before.
1260    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
1261      a C routine to unlimit the stack size
1262    o mnc-ify pkg/aim snapshot vars
1263    o mnc-ify pkg/land as requested by Daniel
1264    o various changes to mnc including:
1265      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
1266      - output can now be grouped so that all files within a group
1267          change the ITER portion of their names in lock-step together
1268      - can now read ("global") PER-FACE (in addition to PER-TILE) files
1269          and works with both EXCH1 and EXCH2 (but needs more testing)
1270      - writing works for all verification test cases w/ g77 on Linux
1271    
1272    checkpoint57r_post
1273    o make MNC variable initialization happen earlier
1274    o add diagnostics for (almost) each term of the momentum Eq.
1275    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
1276    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
1277    o remove MINIMAL_TAVE_OUTPUT option ;
1278      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
1279    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
1280      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
1281    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
1282    o add time-dependent SST, SSS control
1283    o cost terms in ecco/ modularized (new cost_generic.F)
1284    o cost_averages routines are modularized (new cost_averagesgeneric.F)
1285    o new infrastructure for seaice model vs. obs misfits in seaice/
1286      * driver from the_main_loop.F is seaice_cost_driver.F
1287      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
1288      * gradient check in Exp. 6a of natl_box_adjoint/
1289    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
1290      (see README file)
1291    
1292    checkpoint57q_post
1293    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
1294    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
1295      - bug was reported by Jean-Michel and Ian Fenty
1296    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
1297      update exp. cpl_aim+ocn output.
1298    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
1299      Needed for high-res. runs with large global files
1300      to be able to limit tapelev size
1301    o Changed some tests for adjoint:
1302      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
1303      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
1304      * global_ocean.90x40x15/ back to default 3-level checkpointing
1305    o Modifications to enable scripted COMMON to MODULE conversion
1306      * verification/OpenAD/code/ has necessary scripts and description;
1307      * converts, compiles and runs successfully;
1308    
1309    checkpoint57p_post
1310    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
1311    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
1312      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
1313    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
1314    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
1315      (was already the case for dissipation with mom_vecinv,
1316       and also the case for grad.PhiHyd when staggered-timeStep)
1317      This will allow to put dissipation out-off the AB time-stepping.
1318     Unfortunately, affects truncation error. Update output of exp. that "fails"
1319      (cg2d matching number) and leave the others for later: front_relax(10),
1320      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
1321      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
1322    
1323    checkpoint57o_post
1324    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
1325      (2) its ready to be documented during the 20050801 DocFest
1326    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
1327      for ideal_2D_oce and lab_sea on linux_ia32_g77
1328    o set to #undef CTRL_SET_OLD_MAXCVARS_30
1329      in global1x1_tot/code_seaice_adj to access indices 32, 33
1330      (worth another tag)
1331    
1332    checkpoint57n_post
1333    o adding precip control xx_precip 32
1334    o adding swflux control xx_swflux 33
1335    o Replacing 10 forcing penalty cost routines by 1 generic.
1336    o Implementing partitioning in time-mean and variable adjustment
1337      for atmos. state.
1338    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
1339    o in natl_box_adjoint:
1340      * updated exp 1 to 10
1341        (but does not have time-mean vs. variable split results yet)
1342    o updated global1x1/*_seaice_adj/
1343      to incorporate latest changes
1344    o enable useSingleCpuIO for mdsio vector routines
1345      (applies in particular to tapelev I/O)
1346    o removed inefficient K-loop in all active_file*control*.F
1347    
1348    checkpoint57m_post
1349    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
1350      and advect_cs (use EXCH-2 and standard cs-32 grid files).
1351    o pkg/exch2: filling of face-corner halo regions is optional
1352      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
1353    
1354    checkpoint57l_post
1355     tag before updating tutorials (pre-release-2)
1356    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
1357       for output and interpolation of input fields onto model grid)
1358    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
1359       Affects results of exp. rotating_tank ; update output.txt.
1360    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
1361          and taking the square quantity and/or using a fraction-weight field.
1362    o fix aim_diagnostics_init.F mate numbers.
1363    o add mnc output capability to diagnostics/diagstat and update
1364      our cvsignore files for the ACSII output generated
1365    
1366    checkpoint57k_post
1367    o lab_sea now uses diagnostics package and provides a suite of
1368      new EXF diagnostics output.
1369    
1370    checkpoint57j_post
1371    o exf
1372      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
1373        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
1374        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
1375      * extended diagnostics output
1376        - now includes all EXF variables
1377        - hs, hl moved to common block
1378        - separate S/R for diagnostics, called after ctrl vector is added
1379        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
1380        - EXFqnet contains true Qnet (i.e. includes qsw)
1381      * updated verif. lab_sea, global_with_exf
1382      * Rearranging hflux (exf_mapfields -> exf_getforcing)
1383        to ensure that diagnostics sees a true EXFqnet
1384    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
1385    o diagnostics pkg: change pointers so that 1 diagnostic can be used
1386      several times with different frequencies.
1387    o mnc-ify the thsice package as requested by Daniel Enderton
1388      - the monitor--MNC output needs work
1389      - many attributes need to be added (most are currently blank)
1390    o mnc-ify theaim_v23 package as requested by Daniel Enderton
1391      - many attributes need to be added (most are currently blank)
1392    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
1393    o add Sadourny like discretization to the 4th.O vorticity advection scheme
1394    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
1395      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
1396         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
1397    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
1398     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
1399    
1400    checkpoint57i_post
1401    o Diagnostics package was changed: diagnostic allocation is now deactivated
1402      by setting an empty file name in the namelist (used to be by setting 0 frequency)
1403    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
1404      add 1rst Order upwind vertical Shear.
1405    o add a quick fix for A/B checkpointing in OFFLINE mode
1406    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
1407      end-run around the C/Fortran linking horror in eesup/src/timers.F
1408    o added pkg/runclock: allows user to terminate run based on wall clock
1409    o added non-hydrostatic scaling parameter: nh_am2
1410    o pkg/my82: futile attempt to make results compiler-independent by adding
1411      some "_d 0", etc. no effect.
1412    o for mnc output, fill the 'T' coordinate var with myTime and create a
1413      separate 'iter' variable for iteration count
1414    o pkg/diagnostics:
1415      add new capability: output of Global/Regional & per-level statistics ;
1416      tested against monitor output (including land & thSIce) on various exp.
1417    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
1418    
1419    checkpoint57h_done
1420      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
1421      data.diagnostics, data.gchem, data.ptracers) is done.
1422    
1423    o pkg/diagnostics: prepare for Global/Regional statistics.
1424      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
1425    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
1426      and rename it: DIFFERENT_MULTIPLE
1427    
1428    checkpoint57h_post
1429    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
1430    o pkg/diagnostics: change output frequency, now in seconds (instead
1431      of Nb of iterations). This requires to change data.diagnostics.
1432    checkpoint57h_pre
1433    
1434    o in mnc, let the user create the output dir if both mnc_outdir_date
1435      and mnc_outdir_num are false
1436    o add fflags() to pkg/diagnostics which allows one to specify, on a
1437      per-file basis, the file precision [default behavior is unchanged]
1438    o added diagnostics to pkg/kpp, including computation of mixed layer
1439      depth based on a temperature/density criterion
1440    o updated verification/natl_box to test the new pkg/kpp diagnostics
1441    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
1442    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
1443    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
1444      not mnc -- this mistake was found by JMC and is now corrected
1445    
1446    checkpoint57g_post
1447    o add Adams-Bashforth 3rd Order time stepping:
1448      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
1449      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
1450    checkpoint57g_pre
1451    
1452    o make lambda[Theta,Salt]ClimRelax spatially varying
1453      (default remains spatially uniform constant based on tau)
1454    o added new control variables
1455      * init. uVel, vVel, etanN
1456      * lambda[Theta,Salt]ClimRelax
1457    o separate masks used for ctrl_pack/unpack 'from write_grid' output
1458      (suggested by G. Forget)
1459    
1460    checkpoint57f_post
1461    o add parameter "baseTime" = model base time = time at iteration zero
1462      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
1463      account for baseTime shift
1464    o move Coriolis arrays from PARAMS.h to GRID.h
1465    checkpoint57f_pre
1466    
1467    o mnc-ifying the seaice package
1468    o introduced an alternative length scale calculation for use in the limiting
1469      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
1470    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
1471    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
1472      as well as grad(vort3).  Made it compatible with both approximate form
1473      for the cubed sphere and full form of these gradients.  Added flag
1474      useFullLeith to select between approximate and full form.  
1475    o add "d0" in getcon.F to reduce differences between compilers/platforms
1476      update output.txt of exp. fizhi-gridalt-hs
1477    o change port_rand funtion to allow to set the seed.
1478    o fix obscure MNC bug involving conversion between reals and integers
1479      - it caused no problems with certain (eg. gcc, ifc) compilers but the
1480        new version is now more standards-compliant
1481    o adjoint-related modifications
1482      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
1483      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
1484      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
1485    
1486    checkpoint57e_post
1487    o Adding eddy stress controls a la Ferreira et al.
1488    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
1489    
1490    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
1491      update output.txt of exp. fizhi-gridalt-hs
1492    o add more "Z" dimensions and associated coordinate vars to MNC
1493    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
1494    o parameter calendarDumps: when set, approximate months (30-31 days) and years
1495      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
1496      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
1497      months and years.  Requires pkg/cal.
1498    o diagnostics: add pickup functionality
1499      - off by default for backwards compatibility
1500      - current version only uses MDSIO -- MNC will be added
1501    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
1502    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
1503    
1504    checkpoint57d_post
1505    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
1506    o modify verification/ideal_2D_oce so that it tests the creation of mnc
1507      output from the diagnostics package
1508    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
1509    o make genmake2 more portable by using ".$FS" instead of ".f" for more
1510      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
1511    o add coordinate variables to the MNC output from the diagnostics package
1512    o change MNC-flags default value: true when useMNC=TRUE
1513    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
1514      the ability (off by default) to read the grid information using MNC
1515    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
1516    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
1517    o do snap-shot diagnostics at the middle of the time-interval (instead of
1518      at the end).
1519    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
1520      new test for AIM with thSIce + slab-ocean
1521    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
1522    o move state variable diagnostics to the beginning of the time step ;
1523      (note: still needs some work specially for snap-shot diagnostics)
1524      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
1525    
1526    checkpoint57c_post
1527    o Change testing option (-ieee) to get closer agreement between g77 & ifort
1528    o generate new output.txt files on faulks with g77 & the new -ieee option
1529    checkpoint57c_pre
1530    
1531    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
1532      update output.txt of exp. global_ocean.90x40x15
1533    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
1534      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
1535    o add saltFlux(+File) forcing capability with periodicExternalForcing
1536    o allow to use pkg diagnostics for GM-Redi & ThSIce output
1537    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
1538    o improvements for the MNC output from DIAGNOSTICS:
1539      - correct handling of the unlimitied dimension
1540      - all dims now have associated coordinate variables
1541      - variables located at U, V, and Corner ("Z") points are now written
1542        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
1543        *all* data points are output
1544    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
1545    o added pkg/seaice/seaice_monitor.F
1546    o mdsio_readfield.F can now read files visible only to master MPI process.
1547    o pkg/seaice: some test code for ice-modified ocean stress
1548    o exf_getffields interpolation defaults to bilinear for all scalar forcing
1549      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
1550      spurious negative numbers for precipitation and humidity.  Will cause
1551      some small numerical differences for integrations using pkg/exf/exf_interp.F.
1552    o pkg/ctrl/
1553      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
1554        May be enabled via doPackDiag
1555      *  introduce z-scaling of
1556         + gradient (doZscalePack) and
1557         + control (doZscaleUnpack)
1558    o pkg/mdsio/
1559      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
1560      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
1561    
1562    checkpoint57b_post
1563    o simplify options in diagnostics_fill arguments (remove weird combinations)
1564    o fix MNC coordinate variables so that they now contain per-face index
1565      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
1566      general, EXCH2 grids are only aligned to a "local" coordinate system
1567    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
1568    o Implement instantaneous output within pkg diagnostics:
1569      setting a negative frequency in data.diagnostics produces
1570     "snap-shot" output (as opposed to time-average if freq > 0)
1571    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
1572      NOTE: change ptracer diagnostics name: use 2 characters to work with
1573            more than 9 tracers. Add also diagnostics of advect & diffus flux.
1574    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
1575      becomes the coordinate variable for the 'T' dimension
1576    o add CF-style coordinate variables to MNC
1577      - just a first cut:  numbers are meaningless on the cubesphere and
1578        missing along the T axis but otherwise it works!
1579    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
1580    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
1581    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
1582      this is based directly on what the model compute, so that the content of
1583      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
1584    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
1585    o clean up build options files for SunOS, in particular
1586      - remove -traditional from xmakedepend
1587      - change -xarch=v9 to -xarch=native for f77
1588      - restore use of make (not gmake)
1589      - add CC=gcc if using g77
1590    o changes per discussion of AM, JMC, & EH3 today:
1591      - move redundant "grid" variables out of "state" -- in preparation of
1592        creating proper CF-style coordinate variables and in recognition
1593        that any/all grid variables can be easily copied (eg. w/NCO) from
1594        the grid files into any of the other NetCDF files
1595      - *always* output grid variables with MDSIO (this will eventually be
1596        changed)
1597      - output MNC grid file if useMNC is true
1598    o every instance of _END_MASTER() has been found and replaced with
1599      _END_MASTER( myThid ) in order to satisfy certain picky Sun
1600      preprocessors
1601    o re-arrange diagnostics pkg initialisation:
1602     - allow each package to extend the available diagnostics list
1603     - add some checking and fix small problems (multi-threaded, ...)
1604     - new S/R diagnostics_fill (replace fill_diagnostics):
1605       look through the short list of active diag. (instead of the long list)
1606       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
1607    
1608    checkpoint57a_post
1609    o this set of changes restores TAMC compatibility
1610      tested for global_ocean.90x40x15 adjoint on trough
1611      (what a pain)
1612    
1613    checkpoint57a_pre
1614    o some modifs in tools/build_options for sunos
1615    o call ctrl_pack for ctrl at end for optimcycle=0
1616    
1617    checkpoint57
1618    o add horizontal bi-harmonic viscosity for vertical velocity
1619      - new parameter viscA4W (defaults to viscA4)
1620      - affects only non-hydrostatic code
1621      - to be done: no-slip lateral boundary conditions
1622    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
1623    o implement Implicit Vertical advection for pTracers
1624    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
1625      (implemented also for implicit vertical diffusion & advection)
1626    o OBCS: extend application of tracer open boundary conditions
1627      to a strip beyond the boundary of width Olx/Oly
1628    o add call monitor to TAF set of required calls (flow directives)
1629      and include in natl_box_adjoint
1630    o untangle a few ifdefs related to cost, ctrl, autodiff
1631      untangel a few ALLOW_ECCO_OPTIMIZATION
1632    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
1633      (theta2, salt2 in ecco_cost_weights)
1634    
1635    checkpoint56c_post
1636    o OBCS as control variables
1637      - update ctrl_ad_diff.list, obcs_ad_diff.list
1638      - remove balance of obcs controls from default
1639      - fix index bug nobcs in ctrl_init
1640      - fix dummy fields filen in ctrl_pack
1641      - add dummy weights for obcs
1642    o lsopt: comment out fort.94 output
1643    o optim:
1644      - remove unnecessary header files
1645      - adjusted namelists
1646      - add xerbla.F to Makefile
1647    o exf:
1648      - multiple modifications of exf_check_range
1649      - unit change in exf_init_runoff from [m/year] to [m/s]
1650    o mdsio:
1651      - i/o-vector change debugLevel from debLevA to debLevB
1652    
1653    checkpoint56b_post
1654    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
1655      is called from DO_THE_MODEL_IO
1656      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
1657      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
1658      - clean up PTRACERS_WRITE_TIMEAVE a little
1659    o add another verification experiment that tests both the cfc-pkg and
1660      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
1661      reactive tendencies treated inline with regular timestepping
1662    o testreport previously did a lousy job of comparing small numbers, so
1663      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
1664      implemented in the little c-progam tmp_cmpnum.c which is embedded in
1665      testreport.
1666    o ptracers_monitor: bug fix for MPI
1667    
1668    checkpoint56a_post
1669    o GCHEM: finish reorganizating the package
1670      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
1671        (introduces another 3D-array for each passive tracer, but only if
1672        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
1673        gchemTendency is not needed because the timestep is done separately)
1674      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
1675      - GCHEM is now---more or less cleanly---separate from PTRACERS
1676      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
1677        so clear to me how that should be done in a general way.
1678    o CFC: improve formatting of output in CFC_ATMOS
1679    o PTRACERS:
1680      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
1681        that ALL experiments with ptracers enable can be checked. This makes
1682        GCHEM_MONITOR obsolete.
1683      - include a runtime parameter PTRACERS_monitorFreq that defaults to
1684        monitorFreq
1685      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
1686    o add PTRACERS (PTR0[1-5]) to testreport output
1687    o exf_check_range:
1688      * default changed to .TRUE.
1689      * will check values for niter0 if debLevA, every timestep if debLevB
1690      * STOP in exf_check_range if 'out of range'
1691      * range chosen generous to allow for potential extema
1692      TBD: a version with stricter range
1693           permitted range would be runtime parameters
1694    o GMredi:
1695      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
1696      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
1697      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
1698    o GCHEM:
1699      - move call to GCHEM_FORCING_SEP, so that it is now called before
1700        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
1701      - introduced a useGCHEM runtime flag and applied it everywhere.
1702      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
1703        this flag is now only visible within GCHEM-pkg routines.
1704      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
1705        be replaced by a 3D array that is computed before thermodynamics; for
1706        this, the tracer ID iTracer had to be included into the parameter list
1707        of ptracers_forcing
1708      - set up forward_step to call gchem_forcing, that will replace
1709        gchem_forcing_int in ptracers_forcing
1710      - cleaning up
1711    o small cleaning of exch2: remove files that are also in eesupp/src
1712    
1713    checkpoint56
1714    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
1715    o mnc: cleanup "full" files--fixes out-of-memory problem
1716    o ECCO-GODAE
1717      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
1718      * fully merged and updated from SIO code
1719        windstress sign change affects
1720        - exf_inscal_[u/v]stress
1721        - sign of xx_tau[u/v] adjustments
1722        - signs in cost_scat
1723      * ctrl_get_gen: avoid update of tau[u/v] for first few days
1724      * natl_box_adjoint updated and compressed
1725      * 2-level checkpoint switch added
1726        (tested in EXP. 1 of natl_box_adjoint)
1727      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
1728    o SVD
1729      * first complete, non-hacked version for SVD calculations
1730      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
1731        performed via direct access files admtlm_vector.it????
1732        (via ctrl_[un]pack)
1733      * optimcycle is used for ARPACK iteration counter
1734        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
1735      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
1736        and add linear transforms where necessary
1737      * controls are initial/final SST, SSS (can be extended; need to check
1738        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
1739    o mdsio: filename info to both stderr, stdout
1740    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
1741      from sign change
1742    
1743    checkpoint55j_post
1744    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
1745      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1746    o add consistent build directories and .cvsignore files to verification
1747    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
1748    o make all subroutines 30 or less characters in length for certain older
1749      compilers to work (a thorough search only turns up two routines in
1750      pkg/ptracers)
1751    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
1752      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1753    
1754    checkpoint55i_post
1755    o change arrays for total vertical diffusivity (2.D if explicit,
1756      3.D if implicit) ; each ptracer uses its own background value.
1757    o added mnc/NetCDF output capability to ocn_compon_interf
1758      - added bits to verification/cpl_aim+ocn so that it can run on
1759        ITRDA and other clusters without the mpirun "-wd" option
1760    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
1761      configuration
1762    o give MNC the ability to create additional files rather than
1763      exceeding a specified file size limit "MNC_MAX_FILESIZE"
1764      - the default is just less than 2GB which is a practical limit
1765        on many systems
1766    o Compute the non-local term using either KPP vertical diffusivity (=default)
1767       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
1768    
1769    checkpoint55h_post
1770    o add verification test "vermix"
1771    o remove all the *_ioinc flags and replace with the single global
1772      outputTypesInclusive flag
1773    o allow to set a vertical profile of vertical diffusivity for T & S
1774    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
1775    o useMNC moved from data.mnc to data.pkg
1776    
1777    checkpoint55g_post
1778    o Renaming carbon AD experiments to comply with testreport conventions
1779    o Updating adjoint of Held-Suarez hs94.1x64x5
1780    o Fixing directives for non-ECCO forward_step, after ECCO directives
1781      have been fixed to avoid recomp. of do_oceanic_phys
1782      Works well for global_ocean.90x40x15,
1783      but recomp. issue remains for carbon
1784    o Updating adjoint output for natl_box_adjoint after
1785      pkg/ecco has been modified (see taga c55d_post)
1786    
1787    checkpoint55f_post
1788    o rename to timeave_init_fixed
1789    
1790    checkpoint55e_post
1791    o some delicate re-shuffle of store directives to avoid one
1792      extra call of do_oceanic_physics
1793      affects ecco_the_main_loop.F, do_oceanic_physics.F
1794      checkpoint_lev1_directives.h
1795    o NB: this may break global_ocean adjoint temporarily,
1796      but it is clear how to fix it. Will do later, need this now.
1797    
1798    checkpoint55d_post
1799    o ECCO specific cost function terms (up-to-date with 1x1 runs)
1800    o ecco_cost_weights is modified to 1x1 runs
1801    o modifs to allow observations to be read in as
1802      single file or yearly files
1803    o enable to read exf forcing fields as either
1804      single file or yearly files (flag useExfYearlyFields)
1805    checkpoint55d_pre
1806    
1807    o switch between 2-level and 3-level checkpointing
1808    o add ability of MNC to write local and "partial" (eg. 2D slices where
1809      the full 3D field is never actually stored) arrays to NetCDF files
1810      with the correct (that is, the complete multi-dimensional) set of
1811      array indicies
1812      - used in mom_vecinv() to write the diagFreq output
1813      - tested (demonstrated) in verification/aim.5l_cs
1814    o further mnc-ification
1815      - add verification/lab_sea to the list with mnc setups
1816      - fix undefined mnc v-names in cd_code
1817      - add kpp to mnc output (both snapshot and timeave)
1818    o non-hydrostatic code
1819      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
1820        in calc_gw.F
1821      - defaults to viscAh
1822      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
1823        friction or Leith) in non-hydrostatic mode, as long as there is
1824        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
1825    o pkg/cost
1826      extend simple cost functions to treat time mean quantities
1827      (T,U,V) via cost_accumulate_state from cost_tile
1828    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
1829        be 2 times larger than the minimum size the advection scheme requires.
1830        now get a perfect conservation of salt in advect_cs test-exp (updated)
1831    o GGL90 (Gaspar's TKE mixed layer)
1832      - add horizontal diffusion of TKE, requires exchanges in
1833        do_fields_blocking_exchanges, horizontal diffusivity is zero by
1834        default. In OPA there is no horizontal diffusion of TKE but the
1835        mixing coefficients are computed from a horizontal average of TKE of
1836        6 points or so. I think that diffusion has a little more physical
1837        justification.
1838      - clean up ggl90_calc in the hope of reducing memory usage (this hope
1839        was in vain)
1840      - mask tke-variable in ggl90_init
1841    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
1842    o fix biharmonic diffusion on CS-grid.
1843    o more obcs stuff
1844      - added obcs_external_fields_load as an alternative to the EXF-pkg option
1845        for reading boundary values. This routine is called from
1846        obcs_prescribe_read
1847      - updated obcs_check
1848      - changed sponge layer relaxation parameter units for days to seconds
1849      - turned off sponge layer by default
1850      - changed argument list of OBCS_CALC to myTime+deltaTclock
1851      - fixed about 35 bugs in obcs_external_fields_load
1852    
1853    checkpoint55c_post
1854    o obcs stuff
1855      - new runtime flags useOBCSprescribe, useOBCSbalance
1856      - re-arranged obcs_calc
1857      - moved exf_getobcs to obcs_prescibe_read
1858        obcs_prescibe_read is called after ORLANSKI stuff
1859        and independent of it (executable can contain all).
1860      - updated obcs_check
1861      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
1862        These may be necessary only if tangential velocities are
1863        prescribed at OB, not sure, needs testing.
1864    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
1865      which simplifies the calls and passes the ifc check-bounds test
1866    
1867    checkpoint55b_post
1868    o add a 2D scalar, Z location, exchange_2 routine.
1869    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
1870      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
1871      affects advect_cs results (for the wrong reason): update output.txt
1872    o use a more standard discretization for biharmonic viscosity ;
1873     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
1874      affects results of dome set-up: update output.txt
1875    o fix gad_advection.F (CubedSphere part), back to version 1.23
1876    o fix bug in mom_vi_del2uv.F (CubedSphere part).
1877    
1878    checkpoint55a_post
1879    o merged code to
1880      * prescribe/read time-dependent open boundaries
1881        (works in conjunction with exf, cal)
1882      * sponge layer code for open boundaries
1883      * each boundary N/S/E/W now has its own CPP option
1884        (healthy for the adjoint)
1885    
1886    checkpoint55
1887    o up-to-date adjoint of previous breaks
1888      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
1889      - global_ocean_ebm: adjoint still needs fix (TLM ok)
1890      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
1891      - carbon: * remove tr1-related adjoint verification
1892                * add ptracer as control variable
1893    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
1894      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
1895    
1896    checkpoint54f_post
1897    o in verification/carbin/ remove experiment related to
1898      ALLOW_PASSIVE_TRACER (array tr1 etc)
1899      code_ad/ input_ad/ results_ad
1900    
1901    o add two new packages
1902      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
1903        + subject to optimization (memory)
1904      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
1905        + subject to reordering (many GOTOs in the original code)
1906        + so far opps is called for every (i,j) point, and then operates in
1907          the vertical; one may want to reorder the scheme in order operate in
1908          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
1909          fields)
1910    o overhaul of IO so that we now have flags for MDSIO and/or MNC
1911      - all verification tests compile and run with linux_ia32_g77
1912      - defaults are compatible with current input files--nothing
1913        should change if you were not previously using MNC
1914      - MNC output has been added in numerous places (eg. timeave)
1915        but there are still a few writes not yet do-able with MNC
1916        (this is in progress)
1917      - flags now allow for either/or/both use of MDSIO and MNC and
1918        documentation will soon follow
1919      - numerous small formatting cleanups for ProTeX
1920    o add version info (via BUILD_INFO.h) to MNC and stdout
1921    
1922    checkpoint54e_post
1923    o add two new packages
1924      - pp81 (Packanowski and Philander, 1981), Richardson number and
1925        stratification dependent mixing
1926      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
1927      - these scheme operate in a similar manner as KPP (without ghat, of
1928        course), however there is only one diffusivity that is used for both
1929        temperature and salinity (and passive tracers)ç
1930    o add offline package
1931    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
1932      provided by Stephanie Dutkiewicz
1933    o genmake2: add ability to search for C compilers and cleanup test output
1934      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
1935    
1936    checkpoint54d_post
1937    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
1938    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
1939      leading to additional shift by 5 days each year of integration
1940       (i.e. leading to considerable offset over the years)
1941    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
1942    o start with no AB and no initial filtering (staggerTimeStep):
1943      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
1944    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
1945      (external loading & cpl import/export stay in forward_step.F)
1946    o update coupling interface to work with new staggerTimeStep
1947    o change MDSIO ptracers_pickup.
1948    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
1949    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
1950    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
1951    
1952    checkpoint54c_post
1953    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
1954      this affects (truncation error) output.txt of test-exp:
1955       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
1956    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
1957    o change Qnet to always be the net heat flux, (+upward).
1958      affects (truncation error) output of natl_box exp.: updated
1959    o define the max number of passive tracers in PTRACERS_SIZE.h
1960    o start to test mnc routinely in exp0
1961    o add sea-ice loading (sIceLoad) as a new forcing field.
1962    
1963    checkpoint54b_post
1964    o add testreport "-j JOBS" option for parallel builds (tested and pretty
1965       impressive on Altix and Opteron systems)
1966    o diagnostics can now write NetCDF files through the mnc package
1967    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
1968    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
1969    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
1970      affects (truncation error) output of lab_sea & natl_box exp.: updated
1971    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
1972    
1973    checkpoint54a_post
1974    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
1975    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
1976    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
1977    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
1978      + internal_wave (shift in writing cg2d_ini_res)
1979    checkpoint54a_pre
1980    
1981    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
1982      - modified verification/lab_sea and natl_box_adjoint accordingly
1983    
1984    checkpoint54
1985    checkpoint53g_post
1986    o prepare splitting of thermodynamics: store convect.counter in common block
1987    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
1988      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
1989    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
1990    o new parameter "nShapS": allow to treat differently S from T (nShapT)
1991    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
1992    o restore adjointability
1993    
1994    checkpoint53f_post
1995    o modifications that affect AIM experiment results (update output.txt):
1996      - no advection of S at top interface Nr (pkg/generic_advdiff)
1997      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
1998    o AIM pkg:
1999      - include stability function into surf.Flux derivative relative to Tsurf
2000      - calculate clear-sky radiation & surface temp. change (for diagnostics)
2001    
2002    checkpoint53e_post
2003    o merged cylindrical coord configuration
2004    o added rotating_tank experiment
2005    checkpoint53e_pre
2006    
2007    checkpoint53d_post
2008    o faulks upgraded: re-generate output.txt that have changed:
2009       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
2010    o Added Bryan and Lewis, 1979, vertical diffusivity profile
2011    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
2012    o added Sadourny discretization of Coriolis
2013      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
2014      - re-enabled use of omega3 (useAbsVorticity)
2015    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
2016      vector-invariant equations
2017      - note: does *NOT* yet use same variable visc. for no-slip BC's.
2018    o recoded the lateral boundary conditions for non-hydrostatic w, this time
2019      hopefully without new bugs
2020      - still to do: biharmonic friction for non-hydrostatic w
2021    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
2022    o regenerated output for global_ocean_ebm (using -ieee)
2023    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
2024      of mom_common/
2025      - simple re-arrangement of instructions within computing loop
2026    checkpoint53d_pre
2027    
2028    checkpoint53c_post
2029    o new version of coupler for AIM+thSIce and Ocean models
2030     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
2031     - land: change Evaporation of snow
2032     - aim with thSIce: fix bug in snow-precip.
2033    o changes to calc_gw.F
2034     - bug fix for w^2 term near the bottom boundary
2035     - (hopefully) improve the lateral slip boundary condtions for use with
2036        partial/looped cells
2037      - because the bug fix changes two verification experiments anyway (exp5
2038        and plume on slope), change the lateral boundary condition from half slip
2039        to the value of no_slip_sides
2040    o ebm package wasnt quite up to the parallel task. Fixed that.
2041    o Adjoint of EBM package + verification
2042      * TLM OK
2043      * ADM not sufficient accuracy yet (needs further testing)
2044    
2045    checkpoint53b_post
2046    o Commiting new energy balance model to repository
2047      * package is pkg/ebm
2048      * verif. is verification/global_ocean_ebm
2049      * references are in ebm_driver.F
2050    C      * X. Wang, P. Stone and J. Marotzke, 1999:
2051    C        Global thermohaline circulation. Part I:
2052    C        Sensitivity to atmospheric moisture transport.
2053    C        J. Climate 12(1), 71-82
2054    C      * X. Wang, P. Stone and J. Marotzke, 1999:
2055    C        Global thermohaline circulation. Part II:
2056    C        Sensitivity with interactive transport.
2057    C        J. Climate 12(1), 83-91
2058    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
2059    C        Destabilization of the thermohaline circulation
2060    C        by atmospheric eddy transports.
2061    C        J. Climate 7(12), 1870-1882
2062    o Will need long integration testing.
2063    checkpoint53b_pre
2064    
2065    o created pkg/mom_common in preparation for variable viscosity code
2066    o renamed and split ini_mnc_io
2067    o pkg/land: only liquid water can diffuse or run-off
2068    o AIM using land: soil wetness availability account for snow
2069    o added printMapIncludesZeros to EEPARMS namelist
2070    
2071    checkpoint53a_post
2072    o restore TAMC compatiility for exf_constants.h
2073      (no usage of _d in .h)
2074    o Additional storing in KPP in an attempt to fix
2075      TAMC problem with adjoint of KPP code.
2076      (no success...)
2077      Identical code works fine with TAF.
2078    o Fixed verification/natl_box_adjoint experiments.
2079      Initial conditions for Experiments 4 and 5 are now
2080      set to "SEAICE_initialHEFF=0", which is more reasonable,
2081      and hence gives results closer to that of Experiment 2.
2082      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
2083    
2084    checkpoint53
2085    o stable checkpoint with up to date adjoint
2086      TLM tests only run for 1st grdchk at the moment. Its unclear if
2087      this is a code problem or a problem with resetting code for g_
2088      variables that is being autogenerated wrong.
2089      Otherwise:
2090       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
2091       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
2092         are both still in chaos following their security messes.
2093    
2094    checkpoint52n_post
2095    o various build (mostly genmake2) changes including:
2096      - ability to build/run more easily within Cygwin and MacOS X
2097      - more complicated Makefiles with a stronger dependence on Gnu Make
2098    o pkg/seaice modifications
2099      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
2100        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
2101        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
2102      - changed proxy for geostrophic velocity and updated
2103        verification/lab_sea/results/* accordingly
2104      - removed ADI dynamic solver from pkg/seaice
2105      - replaced all occurrences of 1/CSTICE or 1/CSUICE
2106        they caused a segmentation fault under certain circumstances
2107      - removed unused field WATR
2108    o bug fix in exf-package:
2109      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
2110         now reflect that.
2111    o small fixes in the cal-package:
2112      - set reference date to first of January for the 'model'-calendar
2113      - failing of cal_CheckDate in cal_FullDate now actually results in a
2114        warning
2115    o small modifications in exf-package to increase flexibility:
2116      - change climtempfreeze from a constant to a runtime parameter that
2117        is specified in data.exf_clim (default = -1.9)
2118      - introduce runtime parameter windstressmax (default = 2.0) that is
2119        specified in data.exf
2120    o fix in pkg/thsice:
2121      - update Evap (Tsf changes) to be consistent with Latent heat flux
2122      - maintain snow precipitation unchanged (even if Tsf >=0).
2123     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
2124    
2125    checkpoint52m_post
2126    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
2127      this does not change any of the results, because myIter=0 in swfrac always
2128      lead to jwtype=2 (the default anyway), but the call makes little sense
2129      as a default
2130    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
2131    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
2132      atmospheric model (AIM) to use it ; add a "slab ocean" component.
2133    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
2134    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
2135    o extending useSingleCpuIO option to work with new exch2 I/O format
2136      - old-style, missing-tile I/O is still accessible by defining CPP
2137        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
2138    o monitor package can write to NetCDF files and/or STDOUT
2139    o fix re-definition bug in MNC_GRID_INIT_ALL()
2140    o doc/api_reference added
2141      - a framework for building an API Reference Manual using all
2142        the "protex" comments embedded in the code
2143      - see pkg/generic_advdiff, pkg/mnc for examples
2144    o MNC:
2145      - make myThid the last argument for all subroutines
2146      - new default for the grid files: NO halos
2147      - add useMNC and other run-time flags
2148      - separate per-file-group handling of the unlimited dimension
2149      - early initialization of MNC w/ flags read at the eeboot stage
2150        and lookup tables set in initialize_fixed
2151      - write all MNC output to a freshly-created directory
2152    o thermodynamics sea-ice (thsice) is now tested with testreport.
2153    o test exp. advect_cs: use the standard cs32 grid ; update output.
2154    o Added functionality to grdchk:
2155      pick global i,j,k position (or nearest wet) where to perform check.
2156    
2157    checkpoint52l_post
2158    o new land formulation:
2159      a) use ground enthalpy as prognostic variable to ensure exact
2160         energy conservation.
2161      b) account for water temperature and for latent heat of freezing
2162         in all processes (rain, run-off, ground storage)
2163      c) compute surface and ground temperature implicitly.
2164    o aim_v23 modification for new land model:
2165      a) Treat separately land / ocean / sea-ice surface fluxes
2166         to allow implicit computation of land & sea-ice surface temp.
2167      b) add snow precipitation.
2168    checkpoint52l_pre
2169    
2170    o fix problem (when 1 tile is empty) in min/max monitor.
2171    o fix bug in timeAve (u,vZetatave in common block)
2172    o no restoring terms under ice for pkg/seaice
2173    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
2174    o bug fix for pkg/seaice pickups
2175    o change MNC call locations and add coordinate attributes
2176    o mask vorticity at the corner ; affects global_ocean.cs output
2177    o fix ini_curvilinear_grid ; test CS experiments with mpi
2178    o aim.5l_cs: modify sea-ice fraction input file ; update output
2179    o exf: Adding simple range check routine for exf fields after read
2180    
2181    checkpoint52k_post
2182    o removed top-level directory "diags"
2183      - we migrated these functions to pkg/timeave a long time ago
2184    o fixed bug introduced in pkg/monitor
2185    o accuracy ctrlprec = 32 insuffient for gradient checks using
2186      averaged fields (I/O via cost_averages)
2187      -> use ctrl.h in active_file*.F to control I/O precision.
2188    o paramter list of CALL ADTHE_MAIN_LOOP
2189    o added initial do_the_model_io to ecco
2190    o set all ...Freq to zero after cost_final
2191      taveFreq, dumpFreq, pChkptFreq
2192    o MAIN and ECCO differentiability restored
2193    
2194    checkpoint52j_post
2195    o fix nchklev in tamc.h for global_ocean...
2196    o Bringing flow and store directives up-to-date
2197    o Really weird thing!
2198      call do_the_model_io from the_main_loop with parameters
2199      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
2200      TAF places a faulty re-call of initialise_varia
2201      after cost_final call which should not be there!
2202    checkpoint52j_pre
2203    
2204    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
2205      error messages
2206    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
2207    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
2208      debug output
2209    o modfied mdsio_writefield.F to handle non-global files under exch2
2210    o update AIM Cubed-Sphere exp (aim.5l_cs):
2211      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
2212    o update AIM Equatorial Channel exp:
2213      use standard aim_v23 pkg and change the SST fields to be more realistic.
2214    o globalFile now works with exch2
2215    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
2216      mon_vort3.F to make exch2 friendly with >1 tile per cube face
2217    o limit timeave output for hi-res integrations
2218    
2219    checkpoint52i_post
2220    o removed CPP_EEOPTIONS.h from verification/*/code
2221    o updated the tiling for global_ocean_pressure
2222    checkpoint52i_pre
2223    
2224    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
2225      the old pkg/aim).
2226    
2227    checkpoint52h_pre
2228    o shortened offending lines in exch2_send_rx?.template
2229    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
2230    o genmake2: add build & execute test for NetCDF code
2231    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
2232      old grid files, moved CPP_EEMACROS.h to pkg/exch2
2233    o added useSingleCPUIO flag to monitor.F and mon_out.F
2234    o added temporary hack for sea-ice dynamics on the cube:
2235      metric terms are ignored and it is assumed that
2236      there is no sea-ice on cube faces 1, 2, 4, and 5.
2237    
2238    checkpoint52f_post
2239    o added exch2 cube routines to pkg/exch2
2240    o modified hs94.cs-32x32x5 to use it
2241    o added new grid files to hs94.cs-32x32x5
2242    checkpoint52f_pre
2243    
2244    checkpoint52e_post
2245    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
2246      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
2247    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
2248      to work with implicit vertical advection and AB ;
2249    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
2250    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
2251     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
2252    checkpoint52e_pre
2253    
2254    o fix bug in impldiff when Nr=1 or Nr=2.
2255    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
2256    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
2257    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
2258      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
2259    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
2260    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
2261    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
2262    
2263    checkpoint52d_post
2264    o re-tiled many expts to allow comparison in multi-processor mode
2265      - updated output accordingly
2266      - changed hs94.128x64x5 to use intial T from file rather than use the
2267        random number generator
2268    o add infrastructure in model routines for fizhi and gridalt packages
2269    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
2270    o changes to permit hi-res, cubed-sphere, configuration
2271      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
2272      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
2273      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
2274        of surface winds for the cube
2275      (A verification experiment, based on global_ocean.cs32x15, but with
2276       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
2277       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
2278       complete with example surface forcing files and matlab scripts to look
2279       at the output and compare it with that of global_ocean.cs32x15.)
2280    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
2281       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
2282       to conform to the common rule.
2283    o check-in the first version of the coupler + interfaces for multi-components
2284       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
2285       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
2286       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
2287       - ocean and atmos. share the same horizontal grid (no interpolation).
2288       - exchanges between component and coupler is done in forward_step
2289    o new verification experiment, cpl_aim+ocn:
2290       coupled ocean - AIM atmosphere on cs32 grid.
2291    
2292    checkpoint52d_pre
2293    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
2294    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
2295    
2296    checkpoint52c_post
2297    o Fixing OPTIONS files for use of exf:
2298      - ALLOW_ECCO not needed
2299      - ECCO_CPPOPTIONS.h should not be included from
2300        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
2301        as has been the case in the past
2302      - All cal/exf related options are currently set in
2303        single header file. Should remain so until we
2304        agree on a consistent new policy.
2305    o Removed all CPP options for cal package.
2306      cal has no more CPP options.
2307    o modified STOREs in GAD_ADVECTION
2308    o corrected key comp. for passkey
2309    
2310    checkpoint52b_post
2311    o new version: "thsice" of thermodynamic sea-ice pkg:
2312     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
2313     - modify fluxes but do not change theta directly;
2314     - light cleaning of bulk_force pkg (still needed with thsice).
2315     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
2316       + output_thsice.txt to test thsice & bulk_force pkgs.
2317    o put back grid & coriolis monitor output.
2318    checkpoint52b_pre
2319    
2320    o call "do_the_model_io" at the beginning (=> dump initial state)
2321    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
2322    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
2323      (need info on NUMBER_OF_PTRACERS)
2324    o missing PTRACERS headers in some routines
2325    o default tamc.h in pkg/autodiff supposed to crash
2326      to ensure proper customization
2327    
2328    checkpoint52a_post
2329    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
2330    - moved surfaceTendencyTice from pkg/seaice to main code    - moved surfaceTendencyTice from pkg/seaice to main code
2331    - FREEZE moved to FORWARD_STEP    - subroutine FREEZE_SURFACE now limits only surface temperature
2332    - subroutine FREEZE now limits only surface temperature      and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
2333      this means new output.txt for global_ocean.90x40x15,      => new output.txt for global_ocean.cs32x15 & global_with_exf
2334      global_ocean.cs32x15, and global_with_exf, but note    - keep the old version of FREEZE for backward compatibility;
2335      that results for these three experiments remain      global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
2336      bit-identical to before if allowFreezing=.FALSE.    - corresponding modifs for TAF directives
2337  o added surface flux output variables to TIMEAVE_STATVARS  o added surface flux output variables to TIMEAVE_STATVARS
2338  o time-averaged output for pkg/ptracers  o time-averaged output for pkg/ptracers
2339    o fix problem with ECCO-related divided adjoint
2340      snapshot file was missing some ad-variables,
2341      but no warning issued by TAF
2342    
2343  checkpoint52a_pre  checkpoint52a_pre
2344  o some bug fixes for #undef REAL4_IS_SLOW  o some bug fixes for #undef REAL4_IS_SLOW

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