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revision 1.47 by heimbach, Tue Aug 21 16:38:41 2001 UTC revision 1.927 by dimitri, Tue Dec 18 05:34:41 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    checkpoint59l
8    o pkg/salt_plume: added various options for salt plume depth
9      criterion and for vertical distribution of the salt
10    o pkg/ptracers: new version of ptracers pickup:
11      read meta file and write only fields which are needed to restart.
12      ( same logic as main pickup file ; also using pickupStrictlyMatch )
13    o pkg/seaice:
14      - add timescale for melting due to warm mixed layer as a means of
15        setting SEAICE_availHeatFrac more conveniently
16      - add a CPP-flag/runtime parameter check for flooding algorithm
17      - reformulated availHeat in seaice_growth.F to be independent of AREA
18    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
19      unit changes
20    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
21    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
22      SX vector computer.
23    o pkg/seaice:
24      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
25        seaice forcing fields can now be read only through pkg/exf
26      - removed some unused halos
27    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
28    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
29      or U/VICE from U/VWIND before computing U/VSTRESS
30    
31    checkpoint59k
32    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
33      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
34    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
35      all experiments pass when compile with un-initialised var. checking option.
36    o added pkg/salt_plume
37    o script to test restart (for now, in MITgcm_contrib/jmc_script)
38    o pkg/seaice: new read/write pickup version.
39      read meta file and write only fields which are needed to restart.
40      ( same logic as main pickup file ; also using pickupStrictlyMatch )
41    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
42    o lab_sea.hb87: modify the domain & update output.hb87.txt :
43      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
44      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
45      process. Fixed here by closing the domain at the Northern boundary.
46    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
47    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
48      a set of consecutive levels in/from a 3-D array.
49    o pkg/ptracers:
50      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
51      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
52    
53    checkpoint59j
54    o in pkgs: dic, obcs, offline, rbcs:
55      standard way to compute coeff. for time interpolation between 2 time reccords
56      which retains full precision (& make results less dependent on compiler).
57      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
58    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
59      packages instead of reading ice cover and wind speed separately
60    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
61     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
62      to allow to compile customized code before the update)
63    o cleaning-up:
64      - fix CPP instruction syntax in pkg/obcs
65      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
66        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
67      - fix some threads issue in IO parts.
68    o pkg/dic:
69      - add tons of "_d 0" (--> much better testreports !)
70       and then update outputs of tutorial_global_oce_biogeo
71    o pkg/mom_fluxform:
72      add a special version of momentum advection intended to conserve momentum
73      next to a bathymetry step or a coastline edge. (default = off = #undef)
74    o new read/write pickup version:
75      - for now, only implemented for main (mdsio) pickup file.
76      - write out only what is needed to restart; merge pickup_nh , pickup_ph
77        and main pickup together.
78      - read meta file; read only what is needed to restart; stop if a field
79        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
80        if it make sense (even if the restart is not perfect).
81      - if no meta file, assume that pickup to read corresponds exactly to
82        a pickup that would currently be written.
83      - read pickup written in the old format (until checkpoint59i) if it
84        recognizes an old meta file (no field-list).
85      - add a meta file in exp. which starts from a pickup: 2 cases:
86        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
87         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
88        b) a meta file describing the content of the associated pickup file
89         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
90    o pkg/mdsio & pkg/rw:
91      - new routine to read a meta file ; new set of routine to read
92        Multiple-fields file (with meta file).
93    o added open boundary conditions capability for seaice
94        HSNOW, HSALT, UICE, and VICE
95    
96    checkpoint59i
97    o adjoint:
98      * fix multiDimAdvection adjoint
99        (partial recomputation problem by TAF for fVerT(:,:,kDown)
100        and comlev1 size definition (maxpass vs. max. number of tracers)
101      * verification/global_ocean.90x45x15 adjoint now tests
102        NLFS and multiDimAdvection using DST3 (=30)
103      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
104    o pkg/kpp: add "_d 0" to real constant (if missing);
105      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
106      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
107    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
108      for internal parameters related to restart process (formerly from PARAMS.h)
109      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
110    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
111      as argument. (only atm2d & obcs write_pickup have not yet been updated)
112    o pkg/monitor:
113      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
114      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
115      - account for deep Atmosphere factor and density factor (anelastic)
116    o added open boundary conditions capability for seaice HEFF and AREA
117    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
118      thermodynamics
119      - requires a little reorganization, which affects the testreport results
120        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
121        so that now the conservative form is tested
122      - add a few comments
123    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
124    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
125    o add new diagnostics to seaice: advective, diffusive fluxes (only for
126      multidim-advection, for scheme 2 they are not filled) and transports,
127      thermodynamic growth rates
128    o change units of EmPmR (inside the code, + within coupling interface)
129      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
130      Affects results @ truncation level (cg2d match) and update output of
131       experiments: lab_sea(6), global_ocean.90x40x15(10),
132      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
133      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
134      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
135      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
136    
137    checkpoint59h
138    o pkg/exf:
139      - improve vectorization by moving if-statement out of loops in
140        exf_mapfields, exf_radiation
141      - exf_bulkformulae.F: introduce 2D fields and vectorize code
142    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
143    o testreport:
144      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
145        monitor & update offline_exf_seaice exp. output.
146      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
147    o pkg/seaice:
148      - bug fix in the evp solver: boundary conditions were affected be
149        masking of zMax/zMin (changes results)
150      - minor bug fix in boundary conditions in seaice_calc_strainrates
151        (changes results for no_slip)
152      - seaice_lsr.F: make interpolation of eta dependent on boundaries
153      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
154      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
155        stress formulation and no-slip boundary conditions
156    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
157      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
158    o pkg/seaice: a first HSALT time stepping equation has been checked in
159    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
160      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
161      without requiring DO-IF statements
162    o pkg/thsice:
163      use continuous power-law function for partition of energy between lateral
164      melting/freezing and thinning/thickening ; old code using step function
165      still available with #undef THSICE_FRACEN_POWERLAW
166      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
167    o testreport: change AD testing : check against results/output_adm.txt
168      using same scripts as for forward test.
169    
170    checkpoint59g
171    o adjoint testing: in preparation for changing testreport:
172      - output format: cost and grad written on separated lines
173      - ad output results in directory "results" (instead of "results_ad")
174    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
175    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
176    o pkg/ecco: allow user defined cost function contributions
177    o testreport:
178      Allow to choose (per experiment) the list of tested output variables
179       and the main variable (used to issue a pass/FAIL ) ;
180      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
181      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
182      Also modify printing of summary:
183       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
184       b) echo the list of tested variables in the individual summary.txt of
185          each experiment.
186    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
187      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
188      (but still depend on the tile decompostion of the domain).
189    o pkg/seaice: change a discretization detail to make the B-grid code
190      "more symmetric". This change is likely to remove all "ridges/leads" that
191      where quasi-aligned with the grid in B-grid solutions. It may also be
192      the solution to the stress coupling issues with the B-grid.
193    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
194      remove .cvsignore from input dir. (since testreport no longer run here).
195    o pkg/thsice:
196     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
197     - fix reshaping of sea-ice just after advection:
198       melt all the ice only if ice-volume is too small.
199     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
200       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
201     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
202    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
203      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
204    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
205      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
206      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
207      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
208      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
209      -> update output.txt
210    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
211     this affects truncation error: -> update output.txt of exp:
212      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
213      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
214    
215    checkpoint59f
216    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
217    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
218      a bounded range (in forward mode)
219    o pkg/ecco, ctrl, autodiff and mom_common:
220     internal parameter controls, completements of implementations
221    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
222    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
223      (not seem any difference in testing results).
224    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
225       at face corners.
226    o pkg/generic_advdiff:
227     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
228      loop range indices for computing vertical advection tendency
229      and do the calculation in the interior only (no overlap) ;
230      for now, only implemented for SOM advection (to save CPU time).
231     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
232    o exch2 adjoint
233      First set of changes:
234      - add exch2 hand-written adjoint templates
235      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
236        This will require cleanup in pkg/autodiff/*.F
237        (changed routines currently kept separate in verif. code/)
238      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
239        that used to hide exch2 or cubed-sphere specific code
240        (commented via 'cph-exch2')
241    o pkg/seaice
242      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
243    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
244       output of global_ocean.cs32x15.thsice .
245    
246    checkpoint59e
247    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
248      for B-grid vector (not yet tested) and C-grid vector (<- only used
249      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
250    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
251      (#ifdef ALLOW_SALT_PLUME)
252    o gather_2d/scatter_2d: removed halo regions
253    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
254      scheme and the corresponding test case (under front_relax dir). For now,
255      only available with Skew-flux form and not yet tested in realistic set-up.
256      adjoint: store directives updated, but gradient checks deteriorated,
257      so maybe GM/Redi adjoint is now broken.
258    o seaice adjoint
259      * add AREA, HEFF, HSNOW as control variable
260        (should not change lab_sea results)
261      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
262    o pkg/seaice:
263      * added computation of saltFlux in seaice_growth;
264        For time being, sea ice salinity is assumed constant
265        contribution of snow flooding to freshening of sea ice is neglected.
266        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
267        defaults to 0.0 in order to maintain backward compatibility.
268        Typical values for SEAICE_salinity are 4 to 10 g/kg.
269      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
270      * added SEAICE_availHeatFrac, which specifies fraction of surface level
271        heat content used to melt or grow ice
272      * commented out cap of HICE: it helps keep ice thinner
273      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
274      * applied OBCS T/S mask to HEFFM sea ice mask
275    
276    checkpoint59d
277    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
278     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
279     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
280    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
281     and change default value of parameter "GM_Small_Number";
282     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
283       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
284       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
285    o pkg/ecco: cost function when applying pkg/smooth to controls
286    o pkg/ctrl: add forcingPrecond run time parameter
287    o pkg/seaice:
288     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
289     - fix bug in metric terms of u-equation in LSR solver (implicit part),
290       changes verification/lab_sea
291     - rearrange implicit part of u-equation in LSR solver to make it easier to
292       read, understand, and debug. This causes changes at the truncation level.
293     - fix (serious) bug in the boundary conditions (sign error in the implicit
294       part) of the LSR solver. Changes all LSR results.
295     - fixed problem with HSNOW initialization to avoid thick snow when AREA
296       is initilized with small values - does not change lab_sea results.
297     - added HsnowFile initialization capability
298    o pkg/smooth: addition to model/src and pkg/ctrl so allow
299     initialization of pkg/smooth and application to control vector
300    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
301    o dependencies: pkg/profiles requires pkg/cal
302    o pkg/profiles:
303     - added option ALLOW_PROFILES_GENERICGRID
304         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
305         that interpolation information (grid points and coefficients) is provided
306         within the netcdf input files.
307         -> sample matlab scripts can be found in MITgcm_contrib/gael
308         that allow you to prepare netcdf input files.
309     - also modified: cleaner include statements, cleaner error print statements,
310       cleaner stops when error, and more tests of the netcdf input files consistency.
311    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
312    o pkg/seaice:
313     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
314       requires a new routine: seaice_diagnostics_fill.F
315     - make sure that seaice does not move if not forced (pressure replacement
316       method, Hibler and Ip, 1995), changes results
317     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
318     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
319       It is turned off by default (=-1.), because it changes the results.
320     - make it possible to read AREA from a file, too.
321    
322    checkpoint59c
323    o add S/R and diagnostics for oceanic mixed-layer depth
324    o move GMRedi call after all vertical mixing schemes (including KPP)
325    o pkg/thsice:
326     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
327      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
328    o pkg/obcs:
329     - bug fix for balance code
330    o pkg/seaice:
331      - allow values of SEAICE_elasticParm > 1
332      - add new parameter SEAICE_evpTauRelax as an alternative
333        to SEAICE_elasticParm
334      - make lsr boundary conditions free slip (by default), changes result
335      - add code for no slip boundary conditions for lsr
336      - set minimum of zeta to zero (and not 4e8) (changes results)
337      - add a cap on AREA after advecting AREA if seaice_growth is not called
338    o change calculation of Visbeck K:
339      - no longer depend on tapering scheme; instead, compute slope (limited
340        by GM_maxSlope). this is equivalent to what was comuted before with
341        clipping or linear tappering.
342      - fix vertical averaging (wrong by 1/2 level)
343      - leave the old version (but will not be maintained) within
344        #ifdef OLD_VISBECK_CALC / #endif
345      - update output of exp. ideal_2D_oce
346    o change error catch in calc_r_star to improve vectorization
347    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
348      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
349    o adjoint:
350      Re-organized adjoint checkpointing according to Matt Mazloff
351      (but with modifs/completions/cleanups)
352      Storing is now bundled into large arrays to optimized I/O
353      (and second step in cleanup of the_main_loop)
354    
355    checkpoint59b
356    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
357      - export/import (between ocean & coupler) fields needed for ocean DIC.
358    o pkg/seaice:
359      - get rid of three more exchanges seaice_calc_viscosities (required
360        different loop boundaries in seaice_lsr and seaice_ocean_stress)
361      - bug fix in seaice_ocean_stress (update of lab_sea required)
362      - reduce loop boundaries to necessary minimum also in seaice_evp
363      - go back to the old way of computing deltaC/Z as the adjoint likes that
364        better
365    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
366      passive tracer to an Age Tracer) + update output.txt
367    o pkg/exf:
368      - implement A-grid / C-grid selection for wind-stress input files.
369      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
370      for now, in exf_bulk_largeyeager04.F only :
371      - change implementation for case where windspeed + 2. components wind-stress
372        are read-in. AND use rhoConstFresh to convert evap.
373    o pkg/seaice:
374      - use correct EXCH_UV for wind-forcing (on A-grid).
375      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
376        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
377    o pkg/exf:
378      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
379      EXF_INTERPOLATION:
380      - merge global_with_exf/code version of exf_interp_read.F
381        to the main code ;
382      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
383        reading the file ; Important: This options needs to be defined to recover
384        previous code.
385        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
386      - no longer loose real*8 precision along the way when using exf_iprec=64.
387    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
388      - change discretisation of evp-solver in order to avoid another exchange
389        (changes lab_sea) and clean up a little
390      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
391        help the adjoint (this also changes the results slightly)
392      - add a few "_d 0" where they had been missing in seaice_evp.F
393      - cleaning up: remove unused seaice_calc_rhs.F
394    o pkg/exf: some cleaning-up:
395      - change various "constants" into runtime parameters
396      - cleaned-up Large&Yeager04 routine which should eventually
397        replace exf_bulkformulae.F (changed names of S/R and CPP)
398        and merged various ALLOW_ATM_WIND options
399     only used with thsice pkg (in thsice_get_exf.F):
400      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
401        which are used when useStabilityFct_overIce=TRUE (= the default)
402      - change default values of ice & snow emissivity and scale downward LW
403        by ice & snow emissivity.
404    o pkg/thsice:
405     fix few little problems, in thsice_calc_thickn.F:
406      - growth vertically (and not laterally) if iceFrac == iceMaskMax
407      - melt only laterally if hIce < hThinIce (as the comments say)
408      and in thsice_extend.F:
409      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
410      - start to form ice as soon as the minimum ice-volume is reachable.
411     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
412      and cpl_aim+ocn
413    o pkg/kpp
414     - move computation of surface related input fields to KPP into a new
415       subroutine kpp_forcing_surf.F
416     - remove wrong (within bi,bj loops) EXCH calls.
417     - little cleaning (add argument myThid in last position, cvs header ...)
418     - for now, fix conservation problem by exchanging KPPviscAz (may not
419       be the best fix)
420    o pkg/seaice
421     - check for inconsistent evp parameter/cpp-flag combination
422     - remove leftover errIO flat for obsolete name list error handling
423    o OpenAD
424     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
425    
426    checkpoint59a
427    o pkg/seaice: some parameter clarifications and a little bit of clean up
428    o pkg/thsice: rename run-time parameters:
429       himin       -> hIceMin
430       himin0      -> hThinIce
431       hihig       -> hThickIce
432       i0          -> i0swFrac
433       transCoef   -> bMeltCoef
434       frac_energy -> fracMelting
435      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
436       with default values (for now) that do not change the results.
437      remove old version of thsice vars advection in pkg/seaice.
438    o in FFIELDS.h:
439      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
440      - make pLoad & sIceLoad always available (but still only used if
441         ATMOSPHERIC_LOADING is #define).
442    o pkg/kpp: replaced _KPP_RL with _RL
443    o bug fixes for vertical diffusivity computations when both KPP and
444        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
445        are no longer updating the vertical diffusivity array
446        (passed as argument) but are (re-) setting those arrays.
447    o pkg/seaice: fix bug in evp solver, while doing that
448      - change (improve?) discretization of stress computations for both
449        cgrid-lsr and evp solver
450      - add a new routine to compute strain rates
451      - the above changes lab_sea results
452      - add no slip conditions for evp solver (off by default), lsr-version
453        may follow
454      - fix exchange for shear at Z-points (does not change lab_sea)
455      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
456        (to force the user to pick a time step since there is not "safe" way
457        of choosing it)
458      - add principal stress diagnostics
459      - rearrange fields for evp a little to avoid having to call a: too many
460        exchanges and b: exchanges for stress trensor components which we do
461        not have.
462      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
463        of evp, complete rewrite for lsr case (latter is does not yet work
464        in all cases)
465    o pkg/kpp: add code to have mixing in shelf ice caverns
466      - add myThid to all kpp routines (long overdue)
467    
468    checkpoint59
469    o pkg/exf:
470      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
471        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
472      - move exf header files from lower_case.h to UPPER_CASE.h ;
473        add missing cvs Header & Name
474      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
475      - add namelist param. selectStressGridPosition, exf_monFreq
476      - retire many _CLIM routines, and remove data.exf_clim
477        + params moved to data.exf
478        + climsst, climsss now handled by exf_set_gen, i.e.
479          climss?period=0 refers to constant field,
480          climss?period=-12 to monthly forcing
481      - split up namelists in data.exf
482    o pkg/seaice:
483      - remove seaice_exch and seaice_exch_uv
484      - remove superfluous exchange of theta
485      - add myThid to seaice_budget_ocean/ice
486      - add new interface for atmospheric wind forcing (C-grid only)
487        + new routine
488        + two new field (taux, tauy for stress over ice)
489        + removed one global field (DAIRN) for C-grid case only
490    o pkg/thsise
491      - 2nd set of modifs for thsice adjoint in conjunction with exf
492    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
493    
494    checkpoint58y_post
495    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
496      vertical diffusivity, similar to that in MOM4; turned on using
497      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
498      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
499    o Added capability for 3D specification of background vertical diffusion
500      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
501      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
502      "data" file that contains the 3D vertical diffusivity coefficients.
503    o ice dynamics (pkg/seaice) with thsice thermodynamics:
504      - add code within pkg thsice to advect & diffuse sea-ice fields
505      similar to (and will replace) what has been added in  seaice_advdiff.F,
506      but: - conserving Mass, Heat & Salt.
507           - better when using non-linear advection scheme (not yet fully tested)
508           - can also be used in atmospheric set-up (for now, only the diffusion).
509    
510    checkpoint58x_post
511    o IO option for global-file compact format:
512      - add options when generating topology (utils/exch2/matlab-topology-generator)
513      - add I/O capability (pkg/mdsio).
514      - adapt utils/matlab/rdmds.m to read this format.
515      for now long-line format not yet supported by pkg/mdsio (& exch2).
516    o shelfice: add a few diagnostics
517    
518    checkpoint58w_post
519    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
520      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
521      (and replace horiVertRatio in NH code).
522      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
523                         and tutorial_plume_on_slope (sensitive to truncation)
524    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
525      directly to drive seaice model (C-grid only)
526    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
527     - reintroduce computation of wind from stress,
528     - compute tau (in exf_bulkformulae.F) from windstress averaged to
529       mass points to avoid tau = 0
530     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
531    o rdmnc.m: make it work with "global" files created with gluemnc
532    o rdmnc.m : some improvements in dealing with singleton dimension
533      (tested on all testreport mnc output files).
534    o genmake2: disable pkg/profiles if netcdf test fails.
535    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
536    o move call to cal_readparms up to make calendar parameters/variable available
537      to all packages
538    
539    checkpoint58v_post
540    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
541      useDynP_inEos_Zc tested.
542    o pkg/exf: changes to properly interpolate/mask/scale initial fields
543    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
544      and portions thereof.  See read_cs.txt for description and examples.
545    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
546      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
547      following the great-circle arc between those 2 points.
548    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
549      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
550    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
551     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
552     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
553     - still needs work (not working with some options ; efficiency to improve)
554       and serious testing.
555     - use this scheme for temperature & salinity in 2 advection test exp.:
556       advect_xy & advect_xz, respectively.
557    
558    checkpoint58u_post
559    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
560    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
561    o testreport: add option "-skipdir" to skip some test.
562    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
563      momentum calculation.
564    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
565    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
566      remove checkpoint.F and the_correction_step.F (no longer used);
567      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
568    o add option (linFSConserveTr) to correct for tracer source/sink due to
569      Linear Free surface
570    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
571    o pkg/thsice: fix reading mnc-pickups
572    
573    checkpoint58t_post
574    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
575    o pkg/mdsio:
576     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
577       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
578       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
579     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
580     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
581       either MDS_READ_FIELD or MDS_WRITE_FIELD )
582     - new S/R (to replace MDSWRITEMETA), which allows to write more
583       informations (variable names, time ...) to meta files.
584     - modify rdmds.m to give back the meta file content.
585    o pkg/diagnostics: change vertical interpolation to be safer, and more
586       flexible (define p-levels to interpolate to in data.diagnostics);
587      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
588       diagnostic pointer.
589    o pkg/seaice: more cleaning up of seaice_growth, added many comments
590    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
591    o fix multi-category seaice:
592     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
593       SEAICE_MULTICATEGORY
594     - fix short wave heat flux
595    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
596       and allow to use EVP solver. Change forward lab_sea: test both EVP
597       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
598    o Initial check-in of lab_sea adjoint
599      (very similar to natl_box_adjoint/code_seaice)
600      * used C-grid and EVP solver
601      * used KPP, GM/Redi
602      * uses inAdExact=.TRUE.
603      * gradient checks fail for both ADM and TLM
604        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
605        f.d. gradients actually seem more problematic than ADM, TLM gradients;
606        issue is related to forward mismatch between g77 an ifort
607    o pkg/seaice: overhaul of thermodynamics
608     - growth.F and groatb.F are replaced by new routine seaice_growth.F
609     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
610     - move a few global fields out of SEAICE.h into seaice_growth.F and
611       make them 2D (FICE/QNETO/ ...)
612     - remove FO (it is the same as QNETO)
613     - introduce a few local fields to avoid modifying external fields such
614       as atemp, etc.
615    
616    checkpoint58s_post
617    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
618      changed exf_set_gen.F so that
619        genperiod=0 means input file is one time-constant field and
620        genperiod=-12 means input file contains 12 monthly means
621    o CG2D: use pre-computed solver main-diagonal (stored in common block);
622      this affects truncation error ; generate new output file for exp. which
623      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
624        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
625        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
626        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
627        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
628        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
629    o start implementation of deep-atmosphere and anelastic formulation
630    o verification: remove 2nd copy of input files and use script "prepare_run"
631      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
632    o mom_common/vecinv/fluxform: fix a few initialisation isssues
633    o profiles: fix for multithreaded case
634    
635    o diagnostics: rename few diags:
636      s/'PRESSURE'/'RCENTER '/g
637      s/'TICE    '/'oceFreez'/g
638      s/'TAUX    '/'oceTAUX '/g
639      s/'TAUY    '/'oceTAUY '/g
640      s/'SWFLUX  '/'oceQsw  '/g
641      s/DIFx/DFxE/g
642      s/DIFy/DFyE/g
643      and add few ocean-forcing diagnostics:
644      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
645    o modifications to pkg/seaice/growth.F and budget.F, which change results of
646      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
647      as actual snow thickness.  It now refers everywhere to effective snow
648      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
649    
650    checkpoint58r_post
651    o modifications to pkg/seaice/growth.F, which change results of
652      lab_sea experiment: fixes pertain to melting snow over open water, to
653      masking EVAP under sea ice, and to using the correct AREA variable for
654      computations of EVAP, PRECIP, HSNOW, and GHEFF
655    o add ability to read bathy, salt, and theta using MNC (off by def)
656    o add flooding algorithm and advection of HSNOW for pkg/seaice;
657      both are turned off by default and do no change any results
658    o seaice advection with pkg/thsice: a step toward the use of non-linear
659      advection scheme, but #ifdef or commented out for now (requires more EXCH).
660    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
661      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
662      in natl_box (affects results @ truncation level: update output.txt)
663    o multi-threading and IO:
664      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
665      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
666        (needed to work with SingleCpuIO): tested in all verif. exp.
667    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
668      affects the results (but none of the verification test uses this scheme).
669    o Adding some pkg/diagnostics capability to pkg/seaice
670      (will certainly be subject to changes)
671    o ctrl: adding new control variables:
672      lwflux, lwdown, evap, snowprecip, apressure, runoff
673    
674    checkpoint58q_post
675    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
676      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
677      high_res_cube configuration by 4% on Columbia.
678    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
679      add (in global_with_exf/code) a version of EXF_INTERP_READ without
680      dynamical allocation (seems to work in multi-threaded).
681    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
682      single CPU io) so that TAF does not have to see EESUPPORT.h
683    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
684    
685    checkpoint58p_post
686    o obcs: stop if obcs is used with useCDscheme = .true.
687    o shelfice:
688     - fix a sign error so that no slip at shelfice interface works
689     - remove stop for combination non-hydrostatic code and shelfice. That does
690       not mean, that the results are correct, but at least they are numerically
691       stable
692    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
693    o added adjoint exch routined for all exch*3d* routines
694      and updated flow directives
695    
696    checkpoint58o_post
697    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
698      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
699    o change controling S/R for writing pickup file (new S/R do_write_pickup)
700      and clean-up reading/writing of pickup files.
701    o fix local version of read/write pickup (NH part) in rotating_tank/code
702    o simplify EXCH interface:
703     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
704     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
705    o added the regrid package
706    o shelfice:
707     - add a simple boundary layer scheme to reduce noise
708     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
709    
710    checkpoint58n_post
711    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
712       local variable (not in common block).
713    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
714      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
715      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
716        to work with SingleCpuIO.
717    o add "_d 0" to real constant of pkg/cfc subroutines ;
718       update exp. cfc_exemple & tutorial_cfc_offline output files.
719    o multi-threading and IO:
720      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
721        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
722      - barrier before and after reading.
723      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
724      - avoid using MDS_WRITELOCAL for LAND pkg output.
725      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
726        common-block variables ; Allows multi-threading with master-thread IO.
727    o change default MAX_NO_THREADS from 32 to 4 ;
728      and stop cleanly when MAX_NO_THREADS is too small.
729    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
730    
731    checkpoint58m_post
732    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
733       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
734    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
735       keep global_ocean.90x40x15 (for AD testing) with former secondary test
736       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
737    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
738        add MITgcm_tutorials (= code + all the tutorials)
739    o ecco, option to compute cost for total ssh (mean+anom)
740    o consistent with addition of ptracer and ssh in pkg/profiles
741    o profiles: adding ptracer and ssh
742    o testreport: change multi-test output-file name
743      (from output.txt.{name} to output.{name}.txt)
744    o profiles: now ok for mutli-tiles case
745    o seaice: add 4 parameters for different advection schemes for area,
746      (effective) seaice thickness, enthalphy, and snow height. Their default
747      is the standard parameter SEAICEadvScheme
748    o calc_gw:
749     - add cosFacU in zonal viscous flux (harmonic.visc.).
750     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
751       of tutorial_plume_on_slope.
752    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
753    o calc_gw: true flux-form, account for horizontal grid spacing.
754      update rotating_tank results, but not plume_on_slope (affected at
755      truncation level, 11 digits).
756    
757    checkpoint58l_post
758    o calc_gw:
759     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
760     - remove side-drag for now (need to fix it); update plume_on_slope results.
761     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
762    o commit code to make SST/SSS weights spatially variable
763      (based on either variable in-situ or variable initial T/S weights)
764    o pkg/ecco:
765      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
766        now based on horizontally varying weights wthetaLev, wsaltLev
767      * cost_averagesflags now returns year indices in addition to day, month
768      * sflux balance is performed on annual basis
769        (sflxumm, sfluxmm2, bal_sfluxmm)
770      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
771        including separate counting and multipliers
772    o pkg/rbcs
773      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
774    
775    checkpoint58k_post
776    o testreport:
777     - always build in dir. "build" (if not there, mkdir build instead of building
778       & running in input)
779     - run in dir run (if it exists), in build otherwise.
780     - call prepare_run (if input/prepare_run exists)
781     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
782    o pkg/exf modifications to interpolation and rotation routines for more
783       reasonable treatment of North Pole singularity: for tracers North Pole
784       value is set to northernmost zonal-mean value, for zonal velocity it is
785       set to zero, and for meridional velocity it is set to northernmost value.
786    o pkg/exf/exf_check_range.F
787     - add tile index to diagnostics and move stop statement to the very
788       end of the routine.
789    o pkg/diagnostics: (diagnostics_main_init.F)
790      define title of isomorphic variables according to the current config.
791    o pkg/thsice with pkg/seaice dynamics:
792    - fix domain of computation (interior only, required for exf) and do exchanges
793    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
794    o towards a standard way of dealing with multi-threading in MONITOR
795      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
796    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
797       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
798    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
799    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
800    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
801       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
802    o tracer advection:
803     - clean-up and simplify calc_common_factors.F
804     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
805       advection subroutine (but still not used within DST advection S/R)
806    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
807    
808    checkpoint58j_post
809    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
810      from file (collects calls previously in FORWARD_STEP)
811    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
812    o adjoint store dir. adjusted accordingly
813    o genmake2
814      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
815    
816    checkpoint58i_post
817    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
818      on wind stress (SEAICEstressFactor defaults to 1.)
819    o Total number of Timers is finite (<=40): comment out 2 non-essential one
820      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
821    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
822      on CS-grid: no longer loosing mass.
823    o exf & curvilinear-grid: no longer modify longitude xC & xG.
824    o pkg/ggl90: fix sloppy output and fix a bug
825    o pkg/seaice: added SEAICEuseEVPpickup parameter
826      - Set to false in order to start EVP solver with
827        non-EVP pickup files when using SEAICEuseEVP
828      - fix sign error in diffusion in seaice_calc_rhs
829    
830    checkpoint58h_post
831    * Modifications for bottom topography control
832      o replace hFacC by _hFacC at various places
833      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
834      o add non-self-adjoint cg2d_nsa
835      o update autodiff support routines
836      o re-initialise hfac after ctrl_depth_ini
837      o works for 5x5 box, doesnt work for global_ocean.90x40x15
838    * Adding verification for 5x5 box (4-layer) bottom topography control
839    
840    checkpoint58g_post
841    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
842       used for mean seasonal cycle, mean diurnal cycle); add an example
843       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
844    o pkg/ggl90:
845      - add parameter (minimum surface kinetic energy)
846      - fix bug (avoiding division by zero)
847    o couple pkg/thsice to pkg/seaice:
848      - modify advection in seaice to accomodate new scalar fields to be advected
849      - only muliDimAdection scheme work with seaice/thsice
850      - mapping of thsice-variables to seaice-variables, back and forth
851      - does not break the verification experiments, but does not give the
852        desired results either
853    o pkg/seaice
854      - make (default) second order advection a bit less confusing?
855    
856    checkpoint58f_post
857    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
858      to pkg/seaice):
859      - new routines thsice_map_exf and thsice_get_exf provide the interface
860      - add an additional formal parameter to thsice_solve4temp
861    o pkg/exf:
862      - add new fields wspeed, snowprecip (to be able to couple to thsice)
863      - correct Stefan-Boltzmann constant
864      - new parameter for longwave surface emittance
865      - separate some stuff from exf_bulkformulae into new routines  
866        exf_radiation, exf_wind
867      - add new parameters and constants: longwave emissivity for ocean, ice
868        and snow, evaporation parameters over ice
869      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
870        either wind from stress or stress from wind
871    o pkg/thSIce:
872    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
873    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
874       and THSICE_CALC_THICKN
875    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
876    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
877      to make debugging easier.
878    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
879    o pkg/bulk_force:
880      - clean-up comments and parameters ;
881      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
882    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
883      generate new output for test-experiment: aim.5l_cs.thSI
884    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
885      testreport accordingly
886    
887    checkpoint58e_post
888    o SEAICE_CGRID adjoint done
889    o R_STAR adjoint implemented.
890      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
891      * need to sort out init. of h0facc, etc.
892    o Make pkg/profile fully independent of ecco,cost, etc. stuff
893      to be able to use it in pure forward.
894    
895    checkpoint58d_post
896    o upgrade simple test-experiment to tutorial example:
897     step.1: duplicate the experiment and (step.2) will remove the old copy.
898      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
899      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
900      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
901      tutorial_global_oce_biogeo    <- copy of dic_example
902      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
903      tutorial_plume_on_slope       <- copy of plume_on_slope
904      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
905      tutorial_global_oce_optim     <- empty for now (David ?)
906      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
907     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
908    o correct a sign problem in cost_scat.F
909    o obcs and ptracers: fix boundary conditions for advections schemes
910      with larger stencil
911    o thsice adjoint: start
912    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
913      completeness
914    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
915      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
916    o ptracers adjoint:
917      * avoid extensive recomputatations
918      * fix missing re-init. of gptr (missed by TAF)
919    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
920      me to turn off the excessive output to STDOUT that this package produces
921    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
922      and add those terms in Vector-Invariant formulation.
923    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
924      if the control period (xx_hfluxperiod etc) is 0
925    o in profiles pkg, clean routines and fix details
926    o in ecco pkg, reading ssh data:
927      fix problem in case the model does not start at iter0=0
928    o fix mnc-pickup/restart for ptracers
929    o new package prifiles:
930      code to compute profile-based cost by Gael Forget
931      (modifs in ecco, ctrl, autodiff)
932    o Benign bug fix in initialization (spotted by M. Mazloff) of
933      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
934    
935    checkpoint58c_post
936    o adjoint: finish NLFS adjoint and provide reference output in
937      verification/global_ocean.90x40x15/results_ad_nlfs
938    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
939      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
940      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
941      with SEAICE_CGRID defined.
942    o move calendarDumps from "data" to "data.cal" and clean-up the code
943      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
944    o add useEXF & useCAL flags (for now, set in hard-coded way)
945    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
946      (were missing in NH mode, and wrong in quasihydrostatic mode).
947      waiting for Chris updated version of calc_gw to add those CALLs.
948    o fix bug in quasihydrostatic S/R ;
949      add a test for this option: global_ocean.90x40x15.qshyd
950    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
951      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
952    o add on/off flag useOffLine for package OFFLINE
953    o seaice:
954      - modify advection so that it works also on the C-grid
955      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
956        problem in multi-tile runs with C-grid
957      - add flags for clipping ice velocities and/or masking solver forcing
958      - fix drag (ocean on ice) formulation and a bug that caused noise in the
959        C-grid solver
960      - added a few comments to seaice_diffusion.F
961      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
962        are now exclusive)
963      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
964        required re-ordering the code a little:
965       + make DAIRN global variable (defined in SEAICE)
966       + move computation of the viscosities eta and zeta into a new separate
967         routine (because I need to recompute them in seaice_ocean_stress.F)
968    
969    checkpoint58b_post
970    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
971      update output.txt of exp. aim.5l_cs.thSI
972    o various mnc cleanups and improvements:
973      + shrink lookup tables by factor of ~4
974      + better error reporting when running out of lookup space
975      + able to handle longer path/file names (up to 500 chars)
976    o adjoint:
977      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
978      - TBD: "hidden" mom_vecinv recomp. in dynamics
979    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
980     (allow to differentiate between forcing components using new integer flags:
981      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
982     and add new flag to put Dissipation tendency out of Adams-Bashforth.
983    o ecco
984      - enable trend removal from SSH anomaly obs.
985    o adjoint
986      - a fix for PmEpR when #undef EXACT_CONSERV
987      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
988      - try to fix "hidden" recomp. in forward_step for NLFS
989        (NLFS seems broken sometimes after I checked it in)
990    o seaice:
991     - add c-grid version of the dynamic solver:
992       + three new routines that are the c-grid substitute lsr, dynsolver
993         and ostres
994       + put a few fields that were local to dynsolver into global common
995         blocks, so that I can move the computation of stresses etc into
996         seaice_lsr (saves coding but may break the adjoint).
997     - replace more hardwired parameters by runtime parameters
998     - add ice masks that mask the rhs of the implicit solvers where there
999       is no ice (commented out in seaice_dynsolver, because i am not sure
1000       if this works properly), eventually this should replace the clipping
1001       of ice velocities in seaice_dynsolver to +/-40cm/s.
1002    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
1003      include it only where its needed
1004    o move balancing of fluxes before the call of external_forcing_surf
1005    o seaice:
1006      - correct units of turning angles (now they are really in degrees)
1007      - move computation of GWATX/Y out of main routine into dynsolver
1008      - initialize GWATX/Y in seaice_init
1009    o Apply mask on Fresh-Water flux (needed for SSH forcing).
1010      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
1011    o seaice: add runtime flags for turning angles (default to zero)
1012    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
1013      and trend from exf forcing and ctrl control adjustments
1014    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
1015      (since checkpoint57x_post)
1016    o change the default rotation period to 86164.s = the Earth rotation
1017    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
1018      and based on a reference stratification. Tested within hs94.cs-32x32x5.
1019    o seaice advection: add code for choosing between the default (2nd order
1020      central differences) and multiDim advection schemes provided by
1021      pkg/generic_advdiff
1022    o seaice:
1023      - removed all references to SEAICE_GRID.h fields from
1024        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
1025        (cubed-sphere configuration will change a little)
1026      - grid computations in seaice_init are obsolete now.
1027      - cleaned up code a little so that is easier to read (hopefully).
1028      - added new (better?) discretizations of default advection and diffusion
1029        (turn on with SEAICEuseFluxForm)
1030      - replace 1 in 3d global fields by kSurface in growth.F
1031      
1032    checkpoint58a_post
1033    o seaice:
1034      - bug fix in advect.F
1035    o shelfice:
1036      - separate shelfice load anomaly from pload (breaks with time
1037        dependent forcing), => introduce constant field shelficeLoadAnomaly.
1038        Its default is 0., but it may be computed more cleverly from (unknown)
1039        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
1040        done offline. A good approximation of the pressure load anomaly is
1041        necessary to avoid large initial adjustment processes underneath
1042        deep-reaching shelfice.
1043      - small fix in ISOMIP shelfice_thermodynamics
1044      - add more sophisticated thermodynamics of Hellmer (1989), this is
1045        now the default
1046      - give a few constants more intuitive names
1047    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
1048      if bulk formulae are used in long integration (especially EmPmR). Turn
1049      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
1050      if balancePrintMean, the imbalance that is substracted is printed to
1051      STDOUT.
1052    o fix bug (typo) in obcs_apply_eta.F
1053    o add a new package shelfice which enables us to model the circulation
1054      underneath shelf-ice with draughts of hundreds of meters.
1055     - works
1056     - to do: + include improved thermodynamics
1057              + check whether kSurfC (from model/inc/SURFACE.h) can be used
1058                instead of new field kTopC
1059              + can we use topoFile, Ro_surf and existing code in ini_depth.F
1060                instead of new field R_shelfIce and new code in ini_depth.F
1061                and ini_mask_etc.F?
1062              + adjust vertical mixing schemes?
1063    o seaice pkg:
1064     - add a cpp-flag to include a simple formula for a salinity dependent
1065       freezing point of sea water at the surface
1066     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
1067       meridional stresses are now different (and hopefully correct)
1068    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
1069       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
1070       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
1071    o pkg/diagnostics: add options and parameters for regional-statistics
1072       diagnostics ; define regions by reading a region-mask from a file
1073       (might add other options later)
1074    o pkg/bulk_force:
1075     - add option and parameters to use AIM surface-flux formulae.
1076     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
1077       others forcing fields (defined in PARM05, parameter file "data") are loaded
1078       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
1079     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
1080     - use the right EXCH call for uwind,vwind (to work on CS-grid).
1081     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
1082       and parameters (note: calcWindStress replaces .NOT.readwindstress).
1083     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
1084    
1085    checkpoint58
1086    o add "--embed-source" option to genmake2 which, when the supporting
1087      tools can be compiled (as determined by genmake2) will turn on the
1088      embed_files package which then embeds the entire MITgcm source code
1089      (*.[fFhc] + Makefile) used for the build within the executable
1090      - requested by CNH but off by default
1091      - adds a paltry <9MB to the mitgcmuv executable in most cases
1092      - only writes the output when useEMBEDSRC in eedata is true
1093    o clean up 3-dim. relaxation codes:
1094      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
1095      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
1096      * Thanks to Tom Haine for testing!
1097    
1098    checkpoint57z_post
1099    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
1100      affects output (@ truncation level) of exp. plume_on_slope ; updated.
1101    o fix the pickup behavior for obcs in combination with ptracers
1102    o fix a bug in ptracers_external_fields_load
1103    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
1104      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
1105    o transfered surface NH pressure to eta field (if exactConserv).
1106    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
1107         and update lab_sea output.txt file.
1108    o completing 3-dim. relaxation code: additional term
1109         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
1110      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
1111      * At compile time, in "EXF_OPTIONS.h" set
1112          #define  ALLOW_CLIMTEMP_RELAXATION
1113          #define  ALLOW_CLIMSALT_RELAXATION
1114      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
1115          tauThetaClimRelax3Dim = 15552000.0,
1116          tauSaltClimRelax3Dim  = 15552000.0,
1117      * 3 cases:
1118          1) Use a constant-in-time 3-dim. field
1119          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
1120          3) Real-time relax. to time-evolving prescribed field
1121    o Adding Laplacian-type smoothness constraint on
1122      initial and boundary (forcing) controls (ic, bc)
1123      * enable at compile-time via
1124        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
1125      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
1126      * Absolute scale somewhat unclear so far
1127      * no area weighting was included since no other cost term does so far
1128    
1129    checkpoint57y_post
1130    First step for a NLFS adjoint
1131    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
1132    o new init. routines for calc_r_star, calc_surf_dr
1133    o still need to deal with ini_masks_etc
1134    o testreport seemed happy
1135    checkpoint57y_pre
1136    
1137    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
1138    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
1139    o add new offset feature to offline pkg (plus minor cleanup)
1140    o cfc fixes for final year of integration
1141    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
1142      be in GCHEM_OPTIONS).
1143    
1144    checkpoint57x_post
1145    o fix testreport Pb in multiple test experiment.
1146    o cleanup our namelist syntax in verification:
1147      - make it more F95 standards compliant (some work still needed)
1148      - allows the vast majority of our tests to work with gfortran
1149    o Non-Hydrostatic:
1150     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
1151     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
1152    o Allow to apply AB on T,S rather than on AB(gT,gS):
1153     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
1154     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
1155       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
1156     - need a "clever" read_pickup to restart from the other AB formulation
1157    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
1158    o remove some unused variables (reduces number of compiler warnings)
1159    o adjoint
1160      * Disable useVariableViscosity for adjoint for time being
1161        (there are a number of extensive recomputations)
1162      * Initialize certain variables needed for adjoint
1163    
1164    checkpoint57w_post
1165    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
1166                 fix the singleCpuIO RS version of MDSWRITEFIELD
1167       and add a WARNING if using globalFiles=T with multi-processors.
1168    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
1169      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
1170    o tracer advection scheme:
1171      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
1172       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
1173       was not very convenient).
1174      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
1175       (further tests needed for the implicit DST & Flux-Limiter schemes).
1176    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
1177      and sRef for convenience, handy, when you want to initialize
1178      ptracers in a large domain with a constant non-zero value. Also,
1179      untangle ptracers_init.F a little.
1180    
1181    checkpoint57v_post
1182    o change dome exp. to use variable viscosity in side-drag terms.
1183    o remove all the files from the cfc_offline test since they are now
1184      incorporated into tutorial_cfc_offline which has been producing
1185      identical results for a few days of testing
1186    o add new parameter: sideDragFactor to enable half-slip-side BC
1187      and change side-drag S/R to use viscosity from mom_calc_visc
1188      (can switch back by setting sideDragFactor=0.); affects results at
1189      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
1190       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
1191    o vorticity & strain are now computed without masking, to account for
1192      no-slip-side BC in variable viscosity calculation ; mask is applied
1193      anyway later on, before computing advection/coriolis terms.
1194    o modify exp4 to test new obcs support for reading from external files
1195      and for passive tracers
1196    o fix behavior of ptracers_monitor when monitor output is written to a
1197      netcdf-file; still not independent of monitor.F (writes in the same
1198      file).
1199    o change default value of tRef (put a uniform, meaningful value for ocean
1200      & atmos) and initialize sRef (was missing, as Martin mentioned).
1201    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
1202      to be proportional to enstrophy dissipation length.  Thus,
1203       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
1204      This is now consistent with Smagorinsky and with the manual.
1205    
1206    checkpoint57u_post
1207    o OBCS and PTRACERS: add open boundary support for passive tracers
1208      - either use homogenous (pseudo) v.Neumann conditions or prescribe
1209        OB-values from file; this is not different from the way theta and salinity
1210        are treated
1211      - however, Orlanski-radiation conditions are not supported, and the model
1212        will stop if you use pTracers and Orlanski at the same time.
1213      - beefed up the rountine obcs_external_fields_load: now only those open
1214        boundary values are overwritten with values from files for which there
1215        are really files, otherwise the OB-fields remain untouched. This makes
1216        it possible to use different OBs at different ends of the domain (as
1217        with EXF)
1218    o reduce number of exch calls in shap_filt (s2).
1219    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
1220      truncation level) 4/5 MLAdjust test results (11&12 digits match).
1221    
1222    checkpoint57t_post
1223    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
1224    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
1225      same truncation, independent of the face number: affects affects several
1226      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
1227    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
1228      note that biharmonic viscosity + no-slip was not tested in any experiment.
1229    o fix bug in non-linear free-surf side-drag ; generate new output for
1230      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
1231    o make mnc honor the writeBinaryPrec flag for most kinds of output
1232    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
1233    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
1234      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
1235    o add brackets in multi-terms sum to get same truncation, independent of
1236      the face number (manage to get exactly same value of gU,gV at the cs-edge)
1237      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
1238    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
1239      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
1240      a maximum grid-scale Reynolds number.  Also, changes all length calculations
1241      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
1242      Suggested values of viscosity parameters found in mom_calc_visc.
1243      Many new viscosity diagnostics available.
1244    
1245    checkpoint57s_post
1246    o Add clearing-house for viscosity calculations, mom_calc_visc and
1247      correct numerous bugs in LeithD and Smagorinsky discretizations.  
1248      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
1249      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
1250      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
1251      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
1252      The Strain-Tension form is now called with useStrainTensonVisc=.true.
1253      ViscAhStrain and viscAhTension are now retired.
1254    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
1255    o In response to JMC's bug report, genmake2 now ignores any soft-links
1256      that it finds in the *current* directory when searching for files.
1257      Soft-links found in any other source directories will still work as
1258      they did before.
1259    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
1260      a C routine to unlimit the stack size
1261    o mnc-ify pkg/aim snapshot vars
1262    o mnc-ify pkg/land as requested by Daniel
1263    o various changes to mnc including:
1264      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
1265      - output can now be grouped so that all files within a group
1266          change the ITER portion of their names in lock-step together
1267      - can now read ("global") PER-FACE (in addition to PER-TILE) files
1268          and works with both EXCH1 and EXCH2 (but needs more testing)
1269      - writing works for all verification test cases w/ g77 on Linux
1270    
1271    checkpoint57r_post
1272    o make MNC variable initialization happen earlier
1273    o add diagnostics for (almost) each term of the momentum Eq.
1274    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
1275    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
1276    o remove MINIMAL_TAVE_OUTPUT option ;
1277      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
1278    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
1279      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
1280    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
1281    o add time-dependent SST, SSS control
1282    o cost terms in ecco/ modularized (new cost_generic.F)
1283    o cost_averages routines are modularized (new cost_averagesgeneric.F)
1284    o new infrastructure for seaice model vs. obs misfits in seaice/
1285      * driver from the_main_loop.F is seaice_cost_driver.F
1286      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
1287      * gradient check in Exp. 6a of natl_box_adjoint/
1288    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
1289      (see README file)
1290    
1291    checkpoint57q_post
1292    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
1293    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
1294      - bug was reported by Jean-Michel and Ian Fenty
1295    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
1296      update exp. cpl_aim+ocn output.
1297    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
1298      Needed for high-res. runs with large global files
1299      to be able to limit tapelev size
1300    o Changed some tests for adjoint:
1301      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
1302      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
1303      * global_ocean.90x40x15/ back to default 3-level checkpointing
1304    o Modifications to enable scripted COMMON to MODULE conversion
1305      * verification/OpenAD/code/ has necessary scripts and description;
1306      * converts, compiles and runs successfully;
1307    
1308    checkpoint57p_post
1309    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
1310    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
1311      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
1312    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
1313    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
1314      (was already the case for dissipation with mom_vecinv,
1315       and also the case for grad.PhiHyd when staggered-timeStep)
1316      This will allow to put dissipation out-off the AB time-stepping.
1317     Unfortunately, affects truncation error. Update output of exp. that "fails"
1318      (cg2d matching number) and leave the others for later: front_relax(10),
1319      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
1320      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
1321    
1322    checkpoint57o_post
1323    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
1324      (2) its ready to be documented during the 20050801 DocFest
1325    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
1326      for ideal_2D_oce and lab_sea on linux_ia32_g77
1327    o set to #undef CTRL_SET_OLD_MAXCVARS_30
1328      in global1x1_tot/code_seaice_adj to access indices 32, 33
1329      (worth another tag)
1330    
1331    checkpoint57n_post
1332    o adding precip control xx_precip 32
1333    o adding swflux control xx_swflux 33
1334    o Replacing 10 forcing penalty cost routines by 1 generic.
1335    o Implementing partitioning in time-mean and variable adjustment
1336      for atmos. state.
1337    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
1338    o in natl_box_adjoint:
1339      * updated exp 1 to 10
1340        (but does not have time-mean vs. variable split results yet)
1341    o updated global1x1/*_seaice_adj/
1342      to incorporate latest changes
1343    o enable useSingleCpuIO for mdsio vector routines
1344      (applies in particular to tapelev I/O)
1345    o removed inefficient K-loop in all active_file*control*.F
1346    
1347    checkpoint57m_post
1348    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
1349      and advect_cs (use EXCH-2 and standard cs-32 grid files).
1350    o pkg/exch2: filling of face-corner halo regions is optional
1351      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
1352    
1353    checkpoint57l_post
1354     tag before updating tutorials (pre-release-2)
1355    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
1356       for output and interpolation of input fields onto model grid)
1357    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
1358       Affects results of exp. rotating_tank ; update output.txt.
1359    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
1360          and taking the square quantity and/or using a fraction-weight field.
1361    o fix aim_diagnostics_init.F mate numbers.
1362    o add mnc output capability to diagnostics/diagstat and update
1363      our cvsignore files for the ACSII output generated
1364    
1365    checkpoint57k_post
1366    o lab_sea now uses diagnostics package and provides a suite of
1367      new EXF diagnostics output.
1368    
1369    checkpoint57j_post
1370    o exf
1371      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
1372        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
1373        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
1374      * extended diagnostics output
1375        - now includes all EXF variables
1376        - hs, hl moved to common block
1377        - separate S/R for diagnostics, called after ctrl vector is added
1378        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
1379        - EXFqnet contains true Qnet (i.e. includes qsw)
1380      * updated verif. lab_sea, global_with_exf
1381      * Rearranging hflux (exf_mapfields -> exf_getforcing)
1382        to ensure that diagnostics sees a true EXFqnet
1383    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
1384    o diagnostics pkg: change pointers so that 1 diagnostic can be used
1385      several times with different frequencies.
1386    o mnc-ify the thsice package as requested by Daniel Enderton
1387      - the monitor--MNC output needs work
1388      - many attributes need to be added (most are currently blank)
1389    o mnc-ify theaim_v23 package as requested by Daniel Enderton
1390      - many attributes need to be added (most are currently blank)
1391    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
1392    o add Sadourny like discretization to the 4th.O vorticity advection scheme
1393    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
1394      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
1395         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
1396    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
1397     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
1398    
1399    checkpoint57i_post
1400    o Diagnostics package was changed: diagnostic allocation is now deactivated
1401      by setting an empty file name in the namelist (used to be by setting 0 frequency)
1402    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
1403      add 1rst Order upwind vertical Shear.
1404    o add a quick fix for A/B checkpointing in OFFLINE mode
1405    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
1406      end-run around the C/Fortran linking horror in eesup/src/timers.F
1407    o added pkg/runclock: allows user to terminate run based on wall clock
1408    o added non-hydrostatic scaling parameter: nh_am2
1409    o pkg/my82: futile attempt to make results compiler-independent by adding
1410      some "_d 0", etc. no effect.
1411    o for mnc output, fill the 'T' coordinate var with myTime and create a
1412      separate 'iter' variable for iteration count
1413    o pkg/diagnostics:
1414      add new capability: output of Global/Regional & per-level statistics ;
1415      tested against monitor output (including land & thSIce) on various exp.
1416    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
1417    
1418    checkpoint57h_done
1419      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
1420      data.diagnostics, data.gchem, data.ptracers) is done.
1421    
1422    o pkg/diagnostics: prepare for Global/Regional statistics.
1423      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
1424    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
1425      and rename it: DIFFERENT_MULTIPLE
1426    
1427    checkpoint57h_post
1428    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
1429    o pkg/diagnostics: change output frequency, now in seconds (instead
1430      of Nb of iterations). This requires to change data.diagnostics.
1431    checkpoint57h_pre
1432    
1433    o in mnc, let the user create the output dir if both mnc_outdir_date
1434      and mnc_outdir_num are false
1435    o add fflags() to pkg/diagnostics which allows one to specify, on a
1436      per-file basis, the file precision [default behavior is unchanged]
1437    o added diagnostics to pkg/kpp, including computation of mixed layer
1438      depth based on a temperature/density criterion
1439    o updated verification/natl_box to test the new pkg/kpp diagnostics
1440    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
1441    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
1442    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
1443      not mnc -- this mistake was found by JMC and is now corrected
1444    
1445    checkpoint57g_post
1446    o add Adams-Bashforth 3rd Order time stepping:
1447      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
1448      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
1449    checkpoint57g_pre
1450    
1451    o make lambda[Theta,Salt]ClimRelax spatially varying
1452      (default remains spatially uniform constant based on tau)
1453    o added new control variables
1454      * init. uVel, vVel, etanN
1455      * lambda[Theta,Salt]ClimRelax
1456    o separate masks used for ctrl_pack/unpack 'from write_grid' output
1457      (suggested by G. Forget)
1458    
1459    checkpoint57f_post
1460    o add parameter "baseTime" = model base time = time at iteration zero
1461      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
1462      account for baseTime shift
1463    o move Coriolis arrays from PARAMS.h to GRID.h
1464    checkpoint57f_pre
1465    
1466    o mnc-ifying the seaice package
1467    o introduced an alternative length scale calculation for use in the limiting
1468      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
1469    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
1470    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
1471      as well as grad(vort3).  Made it compatible with both approximate form
1472      for the cubed sphere and full form of these gradients.  Added flag
1473      useFullLeith to select between approximate and full form.  
1474    o add "d0" in getcon.F to reduce differences between compilers/platforms
1475      update output.txt of exp. fizhi-gridalt-hs
1476    o change port_rand funtion to allow to set the seed.
1477    o fix obscure MNC bug involving conversion between reals and integers
1478      - it caused no problems with certain (eg. gcc, ifc) compilers but the
1479        new version is now more standards-compliant
1480    o adjoint-related modifications
1481      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
1482      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
1483      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
1484    
1485    checkpoint57e_post
1486    o Adding eddy stress controls a la Ferreira et al.
1487    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
1488    
1489    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
1490      update output.txt of exp. fizhi-gridalt-hs
1491    o add more "Z" dimensions and associated coordinate vars to MNC
1492    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
1493    o parameter calendarDumps: when set, approximate months (30-31 days) and years
1494      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
1495      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
1496      months and years.  Requires pkg/cal.
1497    o diagnostics: add pickup functionality
1498      - off by default for backwards compatibility
1499      - current version only uses MDSIO -- MNC will be added
1500    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
1501    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
1502    
1503    checkpoint57d_post
1504    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
1505    o modify verification/ideal_2D_oce so that it tests the creation of mnc
1506      output from the diagnostics package
1507    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
1508    o make genmake2 more portable by using ".$FS" instead of ".f" for more
1509      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
1510    o add coordinate variables to the MNC output from the diagnostics package
1511    o change MNC-flags default value: true when useMNC=TRUE
1512    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
1513      the ability (off by default) to read the grid information using MNC
1514    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
1515    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
1516    o do snap-shot diagnostics at the middle of the time-interval (instead of
1517      at the end).
1518    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
1519      new test for AIM with thSIce + slab-ocean
1520    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
1521    o move state variable diagnostics to the beginning of the time step ;
1522      (note: still needs some work specially for snap-shot diagnostics)
1523      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
1524    
1525    checkpoint57c_post
1526    o Change testing option (-ieee) to get closer agreement between g77 & ifort
1527    o generate new output.txt files on faulks with g77 & the new -ieee option
1528    checkpoint57c_pre
1529    
1530    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
1531      update output.txt of exp. global_ocean.90x40x15
1532    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
1533      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
1534    o add saltFlux(+File) forcing capability with periodicExternalForcing
1535    o allow to use pkg diagnostics for GM-Redi & ThSIce output
1536    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
1537    o improvements for the MNC output from DIAGNOSTICS:
1538      - correct handling of the unlimitied dimension
1539      - all dims now have associated coordinate variables
1540      - variables located at U, V, and Corner ("Z") points are now written
1541        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
1542        *all* data points are output
1543    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
1544    o added pkg/seaice/seaice_monitor.F
1545    o mdsio_readfield.F can now read files visible only to master MPI process.
1546    o pkg/seaice: some test code for ice-modified ocean stress
1547    o exf_getffields interpolation defaults to bilinear for all scalar forcing
1548      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
1549      spurious negative numbers for precipitation and humidity.  Will cause
1550      some small numerical differences for integrations using pkg/exf/exf_interp.F.
1551    o pkg/ctrl/
1552      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
1553        May be enabled via doPackDiag
1554      *  introduce z-scaling of
1555         + gradient (doZscalePack) and
1556         + control (doZscaleUnpack)
1557    o pkg/mdsio/
1558      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
1559      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
1560    
1561    checkpoint57b_post
1562    o simplify options in diagnostics_fill arguments (remove weird combinations)
1563    o fix MNC coordinate variables so that they now contain per-face index
1564      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
1565      general, EXCH2 grids are only aligned to a "local" coordinate system
1566    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
1567    o Implement instantaneous output within pkg diagnostics:
1568      setting a negative frequency in data.diagnostics produces
1569     "snap-shot" output (as opposed to time-average if freq > 0)
1570    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
1571      NOTE: change ptracer diagnostics name: use 2 characters to work with
1572            more than 9 tracers. Add also diagnostics of advect & diffus flux.
1573    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
1574      becomes the coordinate variable for the 'T' dimension
1575    o add CF-style coordinate variables to MNC
1576      - just a first cut:  numbers are meaningless on the cubesphere and
1577        missing along the T axis but otherwise it works!
1578    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
1579    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
1580    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
1581      this is based directly on what the model compute, so that the content of
1582      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
1583    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
1584    o clean up build options files for SunOS, in particular
1585      - remove -traditional from xmakedepend
1586      - change -xarch=v9 to -xarch=native for f77
1587      - restore use of make (not gmake)
1588      - add CC=gcc if using g77
1589    o changes per discussion of AM, JMC, & EH3 today:
1590      - move redundant "grid" variables out of "state" -- in preparation of
1591        creating proper CF-style coordinate variables and in recognition
1592        that any/all grid variables can be easily copied (eg. w/NCO) from
1593        the grid files into any of the other NetCDF files
1594      - *always* output grid variables with MDSIO (this will eventually be
1595        changed)
1596      - output MNC grid file if useMNC is true
1597    o every instance of _END_MASTER() has been found and replaced with
1598      _END_MASTER( myThid ) in order to satisfy certain picky Sun
1599      preprocessors
1600    o re-arrange diagnostics pkg initialisation:
1601     - allow each package to extend the available diagnostics list
1602     - add some checking and fix small problems (multi-threaded, ...)
1603     - new S/R diagnostics_fill (replace fill_diagnostics):
1604       look through the short list of active diag. (instead of the long list)
1605       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
1606    
1607    checkpoint57a_post
1608    o this set of changes restores TAMC compatibility
1609      tested for global_ocean.90x40x15 adjoint on trough
1610      (what a pain)
1611    
1612    checkpoint57a_pre
1613    o some modifs in tools/build_options for sunos
1614    o call ctrl_pack for ctrl at end for optimcycle=0
1615    
1616    checkpoint57
1617    o add horizontal bi-harmonic viscosity for vertical velocity
1618      - new parameter viscA4W (defaults to viscA4)
1619      - affects only non-hydrostatic code
1620      - to be done: no-slip lateral boundary conditions
1621    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
1622    o implement Implicit Vertical advection for pTracers
1623    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
1624      (implemented also for implicit vertical diffusion & advection)
1625    o OBCS: extend application of tracer open boundary conditions
1626      to a strip beyond the boundary of width Olx/Oly
1627    o add call monitor to TAF set of required calls (flow directives)
1628      and include in natl_box_adjoint
1629    o untangle a few ifdefs related to cost, ctrl, autodiff
1630      untangel a few ALLOW_ECCO_OPTIMIZATION
1631    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
1632      (theta2, salt2 in ecco_cost_weights)
1633    
1634    checkpoint56c_post
1635    o OBCS as control variables
1636      - update ctrl_ad_diff.list, obcs_ad_diff.list
1637      - remove balance of obcs controls from default
1638      - fix index bug nobcs in ctrl_init
1639      - fix dummy fields filen in ctrl_pack
1640      - add dummy weights for obcs
1641    o lsopt: comment out fort.94 output
1642    o optim:
1643      - remove unnecessary header files
1644      - adjusted namelists
1645      - add xerbla.F to Makefile
1646    o exf:
1647      - multiple modifications of exf_check_range
1648      - unit change in exf_init_runoff from [m/year] to [m/s]
1649    o mdsio:
1650      - i/o-vector change debugLevel from debLevA to debLevB
1651    
1652    checkpoint56b_post
1653    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
1654      is called from DO_THE_MODEL_IO
1655      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
1656      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
1657      - clean up PTRACERS_WRITE_TIMEAVE a little
1658    o add another verification experiment that tests both the cfc-pkg and
1659      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
1660      reactive tendencies treated inline with regular timestepping
1661    o testreport previously did a lousy job of comparing small numbers, so
1662      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
1663      implemented in the little c-progam tmp_cmpnum.c which is embedded in
1664      testreport.
1665    o ptracers_monitor: bug fix for MPI
1666    
1667    checkpoint56a_post
1668    o GCHEM: finish reorganizating the package
1669      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
1670        (introduces another 3D-array for each passive tracer, but only if
1671        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
1672        gchemTendency is not needed because the timestep is done separately)
1673      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
1674      - GCHEM is now---more or less cleanly---separate from PTRACERS
1675      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
1676        so clear to me how that should be done in a general way.
1677    o CFC: improve formatting of output in CFC_ATMOS
1678    o PTRACERS:
1679      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
1680        that ALL experiments with ptracers enable can be checked. This makes
1681        GCHEM_MONITOR obsolete.
1682      - include a runtime parameter PTRACERS_monitorFreq that defaults to
1683        monitorFreq
1684      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
1685    o add PTRACERS (PTR0[1-5]) to testreport output
1686    o exf_check_range:
1687      * default changed to .TRUE.
1688      * will check values for niter0 if debLevA, every timestep if debLevB
1689      * STOP in exf_check_range if 'out of range'
1690      * range chosen generous to allow for potential extema
1691      TBD: a version with stricter range
1692           permitted range would be runtime parameters
1693    o GMredi:
1694      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
1695      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
1696      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
1697    o GCHEM:
1698      - move call to GCHEM_FORCING_SEP, so that it is now called before
1699        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
1700      - introduced a useGCHEM runtime flag and applied it everywhere.
1701      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
1702        this flag is now only visible within GCHEM-pkg routines.
1703      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
1704        be replaced by a 3D array that is computed before thermodynamics; for
1705        this, the tracer ID iTracer had to be included into the parameter list
1706        of ptracers_forcing
1707      - set up forward_step to call gchem_forcing, that will replace
1708        gchem_forcing_int in ptracers_forcing
1709      - cleaning up
1710    o small cleaning of exch2: remove files that are also in eesupp/src
1711    
1712    checkpoint56
1713    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
1714    o mnc: cleanup "full" files--fixes out-of-memory problem
1715    o ECCO-GODAE
1716      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
1717      * fully merged and updated from SIO code
1718        windstress sign change affects
1719        - exf_inscal_[u/v]stress
1720        - sign of xx_tau[u/v] adjustments
1721        - signs in cost_scat
1722      * ctrl_get_gen: avoid update of tau[u/v] for first few days
1723      * natl_box_adjoint updated and compressed
1724      * 2-level checkpoint switch added
1725        (tested in EXP. 1 of natl_box_adjoint)
1726      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
1727    o SVD
1728      * first complete, non-hacked version for SVD calculations
1729      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
1730        performed via direct access files admtlm_vector.it????
1731        (via ctrl_[un]pack)
1732      * optimcycle is used for ARPACK iteration counter
1733        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
1734      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
1735        and add linear transforms where necessary
1736      * controls are initial/final SST, SSS (can be extended; need to check
1737        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
1738    o mdsio: filename info to both stderr, stdout
1739    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
1740      from sign change
1741    
1742    checkpoint55j_post
1743    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
1744      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1745    o add consistent build directories and .cvsignore files to verification
1746    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
1747    o make all subroutines 30 or less characters in length for certain older
1748      compilers to work (a thorough search only turns up two routines in
1749      pkg/ptracers)
1750    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
1751      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1752    
1753    checkpoint55i_post
1754    o change arrays for total vertical diffusivity (2.D if explicit,
1755      3.D if implicit) ; each ptracer uses its own background value.
1756    o added mnc/NetCDF output capability to ocn_compon_interf
1757      - added bits to verification/cpl_aim+ocn so that it can run on
1758        ITRDA and other clusters without the mpirun "-wd" option
1759    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
1760      configuration
1761    o give MNC the ability to create additional files rather than
1762      exceeding a specified file size limit "MNC_MAX_FILESIZE"
1763      - the default is just less than 2GB which is a practical limit
1764        on many systems
1765    o Compute the non-local term using either KPP vertical diffusivity (=default)
1766       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
1767    
1768    checkpoint55h_post
1769    o add verification test "vermix"
1770    o remove all the *_ioinc flags and replace with the single global
1771      outputTypesInclusive flag
1772    o allow to set a vertical profile of vertical diffusivity for T & S
1773    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
1774    o useMNC moved from data.mnc to data.pkg
1775    
1776    checkpoint55g_post
1777    o Renaming carbon AD experiments to comply with testreport conventions
1778    o Updating adjoint of Held-Suarez hs94.1x64x5
1779    o Fixing directives for non-ECCO forward_step, after ECCO directives
1780      have been fixed to avoid recomp. of do_oceanic_phys
1781      Works well for global_ocean.90x40x15,
1782      but recomp. issue remains for carbon
1783    o Updating adjoint output for natl_box_adjoint after
1784      pkg/ecco has been modified (see taga c55d_post)
1785    
1786    checkpoint55f_post
1787    o rename to timeave_init_fixed
1788    
1789    checkpoint55e_post
1790    o some delicate re-shuffle of store directives to avoid one
1791      extra call of do_oceanic_physics
1792      affects ecco_the_main_loop.F, do_oceanic_physics.F
1793      checkpoint_lev1_directives.h
1794    o NB: this may break global_ocean adjoint temporarily,
1795      but it is clear how to fix it. Will do later, need this now.
1796    
1797    checkpoint55d_post
1798    o ECCO specific cost function terms (up-to-date with 1x1 runs)
1799    o ecco_cost_weights is modified to 1x1 runs
1800    o modifs to allow observations to be read in as
1801      single file or yearly files
1802    o enable to read exf forcing fields as either
1803      single file or yearly files (flag useExfYearlyFields)
1804    checkpoint55d_pre
1805    
1806    o switch between 2-level and 3-level checkpointing
1807    o add ability of MNC to write local and "partial" (eg. 2D slices where
1808      the full 3D field is never actually stored) arrays to NetCDF files
1809      with the correct (that is, the complete multi-dimensional) set of
1810      array indicies
1811      - used in mom_vecinv() to write the diagFreq output
1812      - tested (demonstrated) in verification/aim.5l_cs
1813    o further mnc-ification
1814      - add verification/lab_sea to the list with mnc setups
1815      - fix undefined mnc v-names in cd_code
1816      - add kpp to mnc output (both snapshot and timeave)
1817    o non-hydrostatic code
1818      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
1819        in calc_gw.F
1820      - defaults to viscAh
1821      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
1822        friction or Leith) in non-hydrostatic mode, as long as there is
1823        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
1824    o pkg/cost
1825      extend simple cost functions to treat time mean quantities
1826      (T,U,V) via cost_accumulate_state from cost_tile
1827    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
1828        be 2 times larger than the minimum size the advection scheme requires.
1829        now get a perfect conservation of salt in advect_cs test-exp (updated)
1830    o GGL90 (Gaspar's TKE mixed layer)
1831      - add horizontal diffusion of TKE, requires exchanges in
1832        do_fields_blocking_exchanges, horizontal diffusivity is zero by
1833        default. In OPA there is no horizontal diffusion of TKE but the
1834        mixing coefficients are computed from a horizontal average of TKE of
1835        6 points or so. I think that diffusion has a little more physical
1836        justification.
1837      - clean up ggl90_calc in the hope of reducing memory usage (this hope
1838        was in vain)
1839      - mask tke-variable in ggl90_init
1840    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
1841    o fix biharmonic diffusion on CS-grid.
1842    o more obcs stuff
1843      - added obcs_external_fields_load as an alternative to the EXF-pkg option
1844        for reading boundary values. This routine is called from
1845        obcs_prescribe_read
1846      - updated obcs_check
1847      - changed sponge layer relaxation parameter units for days to seconds
1848      - turned off sponge layer by default
1849      - changed argument list of OBCS_CALC to myTime+deltaTclock
1850      - fixed about 35 bugs in obcs_external_fields_load
1851    
1852    checkpoint55c_post
1853    o obcs stuff
1854      - new runtime flags useOBCSprescribe, useOBCSbalance
1855      - re-arranged obcs_calc
1856      - moved exf_getobcs to obcs_prescibe_read
1857        obcs_prescibe_read is called after ORLANSKI stuff
1858        and independent of it (executable can contain all).
1859      - updated obcs_check
1860      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
1861        These may be necessary only if tangential velocities are
1862        prescribed at OB, not sure, needs testing.
1863    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
1864      which simplifies the calls and passes the ifc check-bounds test
1865    
1866    checkpoint55b_post
1867    o add a 2D scalar, Z location, exchange_2 routine.
1868    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
1869      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
1870      affects advect_cs results (for the wrong reason): update output.txt
1871    o use a more standard discretization for biharmonic viscosity ;
1872     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
1873      affects results of dome set-up: update output.txt
1874    o fix gad_advection.F (CubedSphere part), back to version 1.23
1875    o fix bug in mom_vi_del2uv.F (CubedSphere part).
1876    
1877    checkpoint55a_post
1878    o merged code to
1879      * prescribe/read time-dependent open boundaries
1880        (works in conjunction with exf, cal)
1881      * sponge layer code for open boundaries
1882      * each boundary N/S/E/W now has its own CPP option
1883        (healthy for the adjoint)
1884    
1885    checkpoint55
1886    o up-to-date adjoint of previous breaks
1887      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
1888      - global_ocean_ebm: adjoint still needs fix (TLM ok)
1889      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
1890      - carbon: * remove tr1-related adjoint verification
1891                * add ptracer as control variable
1892    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
1893      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
1894    
1895    checkpoint54f_post
1896    o in verification/carbin/ remove experiment related to
1897      ALLOW_PASSIVE_TRACER (array tr1 etc)
1898      code_ad/ input_ad/ results_ad
1899    
1900    o add two new packages
1901      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
1902        + subject to optimization (memory)
1903      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
1904        + subject to reordering (many GOTOs in the original code)
1905        + so far opps is called for every (i,j) point, and then operates in
1906          the vertical; one may want to reorder the scheme in order operate in
1907          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
1908          fields)
1909    o overhaul of IO so that we now have flags for MDSIO and/or MNC
1910      - all verification tests compile and run with linux_ia32_g77
1911      - defaults are compatible with current input files--nothing
1912        should change if you were not previously using MNC
1913      - MNC output has been added in numerous places (eg. timeave)
1914        but there are still a few writes not yet do-able with MNC
1915        (this is in progress)
1916      - flags now allow for either/or/both use of MDSIO and MNC and
1917        documentation will soon follow
1918      - numerous small formatting cleanups for ProTeX
1919    o add version info (via BUILD_INFO.h) to MNC and stdout
1920    
1921    checkpoint54e_post
1922    o add two new packages
1923      - pp81 (Packanowski and Philander, 1981), Richardson number and
1924        stratification dependent mixing
1925      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
1926      - these scheme operate in a similar manner as KPP (without ghat, of
1927        course), however there is only one diffusivity that is used for both
1928        temperature and salinity (and passive tracers)ç
1929    o add offline package
1930    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
1931      provided by Stephanie Dutkiewicz
1932    o genmake2: add ability to search for C compilers and cleanup test output
1933      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
1934    
1935    checkpoint54d_post
1936    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
1937    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
1938      leading to additional shift by 5 days each year of integration
1939       (i.e. leading to considerable offset over the years)
1940    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
1941    o start with no AB and no initial filtering (staggerTimeStep):
1942      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
1943    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
1944      (external loading & cpl import/export stay in forward_step.F)
1945    o update coupling interface to work with new staggerTimeStep
1946    o change MDSIO ptracers_pickup.
1947    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
1948    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
1949    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
1950    
1951    checkpoint54c_post
1952    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
1953      this affects (truncation error) output.txt of test-exp:
1954       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
1955    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
1956    o change Qnet to always be the net heat flux, (+upward).
1957      affects (truncation error) output of natl_box exp.: updated
1958    o define the max number of passive tracers in PTRACERS_SIZE.h
1959    o start to test mnc routinely in exp0
1960    o add sea-ice loading (sIceLoad) as a new forcing field.
1961    
1962    checkpoint54b_post
1963    o add testreport "-j JOBS" option for parallel builds (tested and pretty
1964       impressive on Altix and Opteron systems)
1965    o diagnostics can now write NetCDF files through the mnc package
1966    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
1967    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
1968    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
1969      affects (truncation error) output of lab_sea & natl_box exp.: updated
1970    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
1971    
1972    checkpoint54a_post
1973    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
1974    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
1975    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
1976    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
1977      + internal_wave (shift in writing cg2d_ini_res)
1978    checkpoint54a_pre
1979    
1980    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
1981      - modified verification/lab_sea and natl_box_adjoint accordingly
1982    
1983    checkpoint54
1984    checkpoint53g_post
1985    o prepare splitting of thermodynamics: store convect.counter in common block
1986    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
1987      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
1988    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
1989    o new parameter "nShapS": allow to treat differently S from T (nShapT)
1990    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
1991    o restore adjointability
1992    
1993    checkpoint53f_post
1994    o modifications that affect AIM experiment results (update output.txt):
1995      - no advection of S at top interface Nr (pkg/generic_advdiff)
1996      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
1997    o AIM pkg:
1998      - include stability function into surf.Flux derivative relative to Tsurf
1999      - calculate clear-sky radiation & surface temp. change (for diagnostics)
2000    
2001    checkpoint53e_post
2002    o merged cylindrical coord configuration
2003    o added rotating_tank experiment
2004    checkpoint53e_pre
2005    
2006    checkpoint53d_post
2007    o faulks upgraded: re-generate output.txt that have changed:
2008       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
2009    o Added Bryan and Lewis, 1979, vertical diffusivity profile
2010    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
2011    o added Sadourny discretization of Coriolis
2012      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
2013      - re-enabled use of omega3 (useAbsVorticity)
2014    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
2015      vector-invariant equations
2016      - note: does *NOT* yet use same variable visc. for no-slip BC's.
2017    o recoded the lateral boundary conditions for non-hydrostatic w, this time
2018      hopefully without new bugs
2019      - still to do: biharmonic friction for non-hydrostatic w
2020    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
2021    o regenerated output for global_ocean_ebm (using -ieee)
2022    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
2023      of mom_common/
2024      - simple re-arrangement of instructions within computing loop
2025    checkpoint53d_pre
2026    
2027    checkpoint53c_post
2028    o new version of coupler for AIM+thSIce and Ocean models
2029     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
2030     - land: change Evaporation of snow
2031     - aim with thSIce: fix bug in snow-precip.
2032    o changes to calc_gw.F
2033     - bug fix for w^2 term near the bottom boundary
2034     - (hopefully) improve the lateral slip boundary condtions for use with
2035        partial/looped cells
2036      - because the bug fix changes two verification experiments anyway (exp5
2037        and plume on slope), change the lateral boundary condition from half slip
2038        to the value of no_slip_sides
2039    o ebm package wasnt quite up to the parallel task. Fixed that.
2040    o Adjoint of EBM package + verification
2041      * TLM OK
2042      * ADM not sufficient accuracy yet (needs further testing)
2043    
2044    checkpoint53b_post
2045    o Commiting new energy balance model to repository
2046      * package is pkg/ebm
2047      * verif. is verification/global_ocean_ebm
2048      * references are in ebm_driver.F
2049    C      * X. Wang, P. Stone and J. Marotzke, 1999:
2050    C        Global thermohaline circulation. Part I:
2051    C        Sensitivity to atmospheric moisture transport.
2052    C        J. Climate 12(1), 71-82
2053    C      * X. Wang, P. Stone and J. Marotzke, 1999:
2054    C        Global thermohaline circulation. Part II:
2055    C        Sensitivity with interactive transport.
2056    C        J. Climate 12(1), 83-91
2057    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
2058    C        Destabilization of the thermohaline circulation
2059    C        by atmospheric eddy transports.
2060    C        J. Climate 7(12), 1870-1882
2061    o Will need long integration testing.
2062    checkpoint53b_pre
2063    
2064    o created pkg/mom_common in preparation for variable viscosity code
2065    o renamed and split ini_mnc_io
2066    o pkg/land: only liquid water can diffuse or run-off
2067    o AIM using land: soil wetness availability account for snow
2068    o added printMapIncludesZeros to EEPARMS namelist
2069    
2070    checkpoint53a_post
2071    o restore TAMC compatiility for exf_constants.h
2072      (no usage of _d in .h)
2073    o Additional storing in KPP in an attempt to fix
2074      TAMC problem with adjoint of KPP code.
2075      (no success...)
2076      Identical code works fine with TAF.
2077    o Fixed verification/natl_box_adjoint experiments.
2078      Initial conditions for Experiments 4 and 5 are now
2079      set to "SEAICE_initialHEFF=0", which is more reasonable,
2080      and hence gives results closer to that of Experiment 2.
2081      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
2082    
2083    checkpoint53
2084    o stable checkpoint with up to date adjoint
2085      TLM tests only run for 1st grdchk at the moment. Its unclear if
2086      this is a code problem or a problem with resetting code for g_
2087      variables that is being autogenerated wrong.
2088      Otherwise:
2089       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
2090       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
2091         are both still in chaos following their security messes.
2092    
2093    checkpoint52n_post
2094    o various build (mostly genmake2) changes including:
2095      - ability to build/run more easily within Cygwin and MacOS X
2096      - more complicated Makefiles with a stronger dependence on Gnu Make
2097    o pkg/seaice modifications
2098      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
2099        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
2100        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
2101      - changed proxy for geostrophic velocity and updated
2102        verification/lab_sea/results/* accordingly
2103      - removed ADI dynamic solver from pkg/seaice
2104      - replaced all occurrences of 1/CSTICE or 1/CSUICE
2105        they caused a segmentation fault under certain circumstances
2106      - removed unused field WATR
2107    o bug fix in exf-package:
2108      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
2109         now reflect that.
2110    o small fixes in the cal-package:
2111      - set reference date to first of January for the 'model'-calendar
2112      - failing of cal_CheckDate in cal_FullDate now actually results in a
2113        warning
2114    o small modifications in exf-package to increase flexibility:
2115      - change climtempfreeze from a constant to a runtime parameter that
2116        is specified in data.exf_clim (default = -1.9)
2117      - introduce runtime parameter windstressmax (default = 2.0) that is
2118        specified in data.exf
2119    o fix in pkg/thsice:
2120      - update Evap (Tsf changes) to be consistent with Latent heat flux
2121      - maintain snow precipitation unchanged (even if Tsf >=0).
2122     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
2123    
2124    checkpoint52m_post
2125    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
2126      this does not change any of the results, because myIter=0 in swfrac always
2127      lead to jwtype=2 (the default anyway), but the call makes little sense
2128      as a default
2129    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
2130    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
2131      atmospheric model (AIM) to use it ; add a "slab ocean" component.
2132    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
2133    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
2134    o extending useSingleCpuIO option to work with new exch2 I/O format
2135      - old-style, missing-tile I/O is still accessible by defining CPP
2136        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
2137    o monitor package can write to NetCDF files and/or STDOUT
2138    o fix re-definition bug in MNC_GRID_INIT_ALL()
2139    o doc/api_reference added
2140      - a framework for building an API Reference Manual using all
2141        the "protex" comments embedded in the code
2142      - see pkg/generic_advdiff, pkg/mnc for examples
2143    o MNC:
2144      - make myThid the last argument for all subroutines
2145      - new default for the grid files: NO halos
2146      - add useMNC and other run-time flags
2147      - separate per-file-group handling of the unlimited dimension
2148      - early initialization of MNC w/ flags read at the eeboot stage
2149        and lookup tables set in initialize_fixed
2150      - write all MNC output to a freshly-created directory
2151    o thermodynamics sea-ice (thsice) is now tested with testreport.
2152    o test exp. advect_cs: use the standard cs32 grid ; update output.
2153    o Added functionality to grdchk:
2154      pick global i,j,k position (or nearest wet) where to perform check.
2155    
2156    checkpoint52l_post
2157    o new land formulation:
2158      a) use ground enthalpy as prognostic variable to ensure exact
2159         energy conservation.
2160      b) account for water temperature and for latent heat of freezing
2161         in all processes (rain, run-off, ground storage)
2162      c) compute surface and ground temperature implicitly.
2163    o aim_v23 modification for new land model:
2164      a) Treat separately land / ocean / sea-ice surface fluxes
2165         to allow implicit computation of land & sea-ice surface temp.
2166      b) add snow precipitation.
2167    checkpoint52l_pre
2168    
2169    o fix problem (when 1 tile is empty) in min/max monitor.
2170    o fix bug in timeAve (u,vZetatave in common block)
2171    o no restoring terms under ice for pkg/seaice
2172    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
2173    o bug fix for pkg/seaice pickups
2174    o change MNC call locations and add coordinate attributes
2175    o mask vorticity at the corner ; affects global_ocean.cs output
2176    o fix ini_curvilinear_grid ; test CS experiments with mpi
2177    o aim.5l_cs: modify sea-ice fraction input file ; update output
2178    o exf: Adding simple range check routine for exf fields after read
2179    
2180    checkpoint52k_post
2181    o removed top-level directory "diags"
2182      - we migrated these functions to pkg/timeave a long time ago
2183    o fixed bug introduced in pkg/monitor
2184    o accuracy ctrlprec = 32 insuffient for gradient checks using
2185      averaged fields (I/O via cost_averages)
2186      -> use ctrl.h in active_file*.F to control I/O precision.
2187    o paramter list of CALL ADTHE_MAIN_LOOP
2188    o added initial do_the_model_io to ecco
2189    o set all ...Freq to zero after cost_final
2190      taveFreq, dumpFreq, pChkptFreq
2191    o MAIN and ECCO differentiability restored
2192    
2193    checkpoint52j_post
2194    o fix nchklev in tamc.h for global_ocean...
2195    o Bringing flow and store directives up-to-date
2196    o Really weird thing!
2197      call do_the_model_io from the_main_loop with parameters
2198      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
2199      TAF places a faulty re-call of initialise_varia
2200      after cost_final call which should not be there!
2201    checkpoint52j_pre
2202    
2203    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
2204      error messages
2205    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
2206    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
2207      debug output
2208    o modfied mdsio_writefield.F to handle non-global files under exch2
2209    o update AIM Cubed-Sphere exp (aim.5l_cs):
2210      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
2211    o update AIM Equatorial Channel exp:
2212      use standard aim_v23 pkg and change the SST fields to be more realistic.
2213    o globalFile now works with exch2
2214    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
2215      mon_vort3.F to make exch2 friendly with >1 tile per cube face
2216    o limit timeave output for hi-res integrations
2217    
2218    checkpoint52i_post
2219    o removed CPP_EEOPTIONS.h from verification/*/code
2220    o updated the tiling for global_ocean_pressure
2221    checkpoint52i_pre
2222    
2223    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
2224      the old pkg/aim).
2225    
2226    checkpoint52h_pre
2227    o shortened offending lines in exch2_send_rx?.template
2228    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
2229    o genmake2: add build & execute test for NetCDF code
2230    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
2231      old grid files, moved CPP_EEMACROS.h to pkg/exch2
2232    o added useSingleCPUIO flag to monitor.F and mon_out.F
2233    o added temporary hack for sea-ice dynamics on the cube:
2234      metric terms are ignored and it is assumed that
2235      there is no sea-ice on cube faces 1, 2, 4, and 5.
2236    
2237    checkpoint52f_post
2238    o added exch2 cube routines to pkg/exch2
2239    o modified hs94.cs-32x32x5 to use it
2240    o added new grid files to hs94.cs-32x32x5
2241    checkpoint52f_pre
2242    
2243    checkpoint52e_post
2244    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
2245      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
2246    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
2247      to work with implicit vertical advection and AB ;
2248    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
2249    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
2250     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
2251    checkpoint52e_pre
2252    
2253    o fix bug in impldiff when Nr=1 or Nr=2.
2254    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
2255    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
2256    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
2257      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
2258    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
2259    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
2260    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
2261    
2262    checkpoint52d_post
2263    o re-tiled many expts to allow comparison in multi-processor mode
2264      - updated output accordingly
2265      - changed hs94.128x64x5 to use intial T from file rather than use the
2266        random number generator
2267    o add infrastructure in model routines for fizhi and gridalt packages
2268    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
2269    o changes to permit hi-res, cubed-sphere, configuration
2270      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
2271      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
2272      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
2273        of surface winds for the cube
2274      (A verification experiment, based on global_ocean.cs32x15, but with
2275       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
2276       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
2277       complete with example surface forcing files and matlab scripts to look
2278       at the output and compare it with that of global_ocean.cs32x15.)
2279    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
2280       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
2281       to conform to the common rule.
2282    o check-in the first version of the coupler + interfaces for multi-components
2283       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
2284       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
2285       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
2286       - ocean and atmos. share the same horizontal grid (no interpolation).
2287       - exchanges between component and coupler is done in forward_step
2288    o new verification experiment, cpl_aim+ocn:
2289       coupled ocean - AIM atmosphere on cs32 grid.
2290    
2291    checkpoint52d_pre
2292    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
2293    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
2294    
2295    checkpoint52c_post
2296    o Fixing OPTIONS files for use of exf:
2297      - ALLOW_ECCO not needed
2298      - ECCO_CPPOPTIONS.h should not be included from
2299        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
2300        as has been the case in the past
2301      - All cal/exf related options are currently set in
2302        single header file. Should remain so until we
2303        agree on a consistent new policy.
2304    o Removed all CPP options for cal package.
2305      cal has no more CPP options.
2306    o modified STOREs in GAD_ADVECTION
2307    o corrected key comp. for passkey
2308    
2309    checkpoint52b_post
2310    o new version: "thsice" of thermodynamic sea-ice pkg:
2311     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
2312     - modify fluxes but do not change theta directly;
2313     - light cleaning of bulk_force pkg (still needed with thsice).
2314     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
2315       + output_thsice.txt to test thsice & bulk_force pkgs.
2316    o put back grid & coriolis monitor output.
2317    checkpoint52b_pre
2318    
2319    o call "do_the_model_io" at the beginning (=> dump initial state)
2320    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
2321    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
2322      (need info on NUMBER_OF_PTRACERS)
2323    o missing PTRACERS headers in some routines
2324    o default tamc.h in pkg/autodiff supposed to crash
2325      to ensure proper customization
2326    
2327    checkpoint52a_post
2328    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
2329      - moved surfaceTendencyTice from pkg/seaice to main code
2330      - subroutine FREEZE_SURFACE now limits only surface temperature
2331        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
2332        => new output.txt for global_ocean.cs32x15 & global_with_exf
2333      - keep the old version of FREEZE for backward compatibility;
2334        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
2335      - corresponding modifs for TAF directives
2336    o added surface flux output variables to TIMEAVE_STATVARS
2337    o time-averaged output for pkg/ptracers
2338    o fix problem with ECCO-related divided adjoint
2339      snapshot file was missing some ad-variables,
2340      but no warning issued by TAF
2341    
2342    checkpoint52a_pre
2343    o some bug fixes for #undef REAL4_IS_SLOW
2344    
2345    checkpoint52 = ecco_c52_e35
2346    o after testing adjoints of checkpoint51u_post
2347    
2348    checkpoint51u_post
2349    o this is the post-merge tag of the ecco-branch
2350      (needs another clean checkout and re-testing)
2351    o various natl_box_adjoint configs and results
2352      but no input fields
2353    o obcs adjoint not yet merged!
2354    o adding ECCO global 1x1 and 2x2 degree configs
2355    o updated/extended some store directives for seaice
2356    o pkg/ecco now containes ecco-specific part of cost function
2357    o top level routines the_main_loop, forward_step
2358      supersede those in model/src/
2359      previous input data.cost now in data.ecco
2360      (new namelist ecco_cost_nml)
2361    o in ctrl/ cleaned some cross-dependencies and updated CPP options
2362    
2363    checkpoint51t_post
2364    o this is the pre-merge tag of the ecco-branch
2365    
2366    checkpoint51s_post
2367    o cleanup: removed various obsolete #define-s
2368    o pkg/grdchk
2369      - renamed 'ph-grd 3' to 'grad-res'
2370      - merged from ecco-branch
2371        (remaining bug fixes for obcs gradient checks)
2372      - additional high-precision output for testreport
2373        (grep for 'precision_grdchk_result')
2374    
2375    checkpoint51r_post
2376    o cleaned up or removed CPP_OPTIONS.h files
2377    o updated results for some of the tests to reflect the new
2378      optfiles (-ieee: -O0 instead of -O3)
2379    
2380    checkpoint51q_post
2381    o cd_code:
2382      - moved cd_scheme.F -> cd_code_scheme.F
2383      - separate read_checkpoint from cd_code_ini_vars.F
2384      - separated cd_code part from write_checkpoint
2385      - updated AD_SOURCE, generated .flow
2386      - added CD_CODE_VARS.h to the_main_loop
2387      - Moving cd_code specific store dir.s to pkg/cd_code
2388    o ctrl package totally restructured
2389      - pack/unpack now optional and decoupled from
2390        xx_/adxx_ I/O
2391      - ctrl_pack/unpack cleaned
2392        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
2393      - confined inclusion of AD_CONFIG.h to where necessary.
2394    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
2395    
2396    checkpoint51p_post
2397    o create initial cd_code package
2398      - WARNING: the initialization of fields within packages
2399        is broken because INI_FIELDS (where READ_CHECKPOINT is
2400        called) is called *before* PACKAGES_INIT_VARIABLES.
2401        This seems to be backwards since
2402        1) its important to initially zero the entire field including
2403           the "halo" region
2404        2) zeroing needs to be done *before* reading pickup info
2405           and the pickup call might or might not happen in any
2406           particular run
2407      - this needs an overhaul for R2
2408    o cleanup verification/*/code/GMREDI_OPTIONS.h
2409    o cleanup testreport
2410    
2411    checkpoint51o_post
2412    o bringing AD-related verif's up to date with genmake2
2413      - carbon/
2414      - global_ocean.90x40x15/
2415      - hs.94.1x64x5/
2416      - (front_relax/ )
2417    o (more) consistent directory structure for AD-related verif.'s
2418    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
2419    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
2420    o bug fix in find_alpha.F for MDJWF:
2421      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
2422        change rho -> rho-rhoConst
2423      - replace call find_rho to find_rhonum
2424    o initialisation of rFlx extended to full array (required by TAF)
2425      and shifted to thermodynamics
2426    o removed PTRACERS.h in ptracers routine
2427    o added surfacetendencyPtr to S/R parameter list pracers_forcing
2428    o Correcting initialisations for fVerU, fVerV.
2429    o helping TAF to recognize dependency on kUp for
2430      fVerU, fVerV
2431    o Replacing delZ by delR in pkg/ctrl/
2432    checkpoint51o_pre
2433    
2434    o undid all of cp51 pending some cleanups and discussion
2435    o added the [#include "AD_CONFIG.h"] statement to all files that need
2436       it for adjoint/tl #defines
2437     o re-worked the build logic in genmake2 to support AD_CONFIG.h
2438     o removed tools/genmake since it no longer works
2439    
2440    checkpoint51n_post
2441    o modifications to make FREEZE flux visible to pkg/kpp
2442      - moved surfaceTendencyTice from pkg/seaice to main code
2443      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
2444      - subroutine FREEZE now limits only surface temperature
2445        (this means new output.txt for global_ocean.90x40x15,
2446         global_ocean.cs32x15, and global_with_exf)
2447    o added surface flux output variables to TIMEAVE_STATVARS
2448    
2449    checkpoint51n_pre
2450    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
2451    o added [#include "AD_CONFIG.h"] to all files that use the following
2452      defines:
2453      - ALLOW_ADJOINT_RUN
2454      - ALLOW_TANGENTLINEAR_RUN
2455      - ALLOW_ECCO_OPTIMIZATION
2456    
2457    checkpoint51m_post
2458    o incorporating changes to get TAMC/TAF working in genmake2
2459      - added new TAMC/TAF targets to the Makefile
2460      - various cleanups related to package handling
2461      - these changes should have no impact on the forward model
2462    
2463    checkpoint51l_post
2464    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
2465     - faster algorithm for cal_addtime.F
2466     - higher precision arithmetic, where needed
2467     - pkg/exf *startdate variables changed from calendar date to
2468       model integration time
2469    
2470    checkpoint51l_pre
2471    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
2472    o enable to apply restoring on S & T only in a latitude band.
2473    o update output (external_forcing_surf modif. change truncation errors)
2474       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
2475    
2476    checkpoint51k_post
2477    o change default to: useNHMTerms=.FALSE.
2478     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
2479       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
2480     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
2481        exp1, ideal_2D_oce
2482     - change data file of oceanic exp (leave the results unchanged for now)
2483       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
2484    o set gravitySign automatically according to the vertical coordinate used
2485      (and change sign: back to "logical" value: +1 when R increases downward)
2486    o added an include barrier to the default CPP_OPTIONS.h and
2487      removed the #include "PACKAGES_CONFIG.h" from it
2488    o fix a bug in mom_fluxform (from chk51j_post)
2489    
2490    checkpoint51j_post
2491    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
2492    o adjusted some flow directives (dynamics, thermodynamics)
2493    o added cubed-sphere case to test cost function
2494    o heckpoint_lev?_directives.h now include
2495      pkg-specific directives, whenever those are enabled.
2496    o Moving pkg-specific flow directives to corresponding pkg
2497      Moving pkg-specific differentiation list to corresponding pkg
2498      Moving pkg-specific checkpoint-lev storing to corresponding pkg
2499      ---> conventions are
2500           - pkg_ad.flow
2501           - pkg_ad_diff.list
2502           - pkg_ad_check_lev?_dir.h
2503    
2504    checkpoint51i_post
2505    o merge of the branch-genmake2
2506      - knowingly breaks the older genmake
2507      - automatic generation of all ALLOW_${PKG_NAME} defines
2508      - new testreport supersedes older testscript
2509    o large number of package inclusion and header cleanups
2510    checkpoint51i_pre
2511    
2512    o new output for adjoin of global ocean vector invariant
2513    o fix for checkpoint of thermodynamic seaice and bulk_force
2514    o Steph gchem various cleanups
2515    
2516    checkpoint 51h_pre
2517    o fixed some single quotes
2518    o modify gchem pkg to be more versatile
2519    o modifications to clean up dic pkg
2520    o add pkg/cfc
2521    
2522    checkpoint51g_post
2523    o provide links for ARPACK and ADM*TLM
2524    o start removing verification/vero/
2525    o update AD-related stuff
2526      (in particular some IF-statements in model/src/ routines)
2527    o adding to verification/global_ocean.90x40x15/ adjoint of
2528      vector invariant setup
2529    
2530    checkpoint51f_post
2531    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
2532    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
2533      of tracer Green's fucntions for ocean inversion project.
2534    
2535    checkpoint51f_pre
2536    o Added on-the-fly spatial interpolation capability
2537        "USE_EXF_INTERPOLATION" to pkg/exf.
2538      - This is a temporary Cartesian-grid hack until
2539        the super-duper ESMF coupler becomes available.
2540      - See verification/global_with_exf/README for usage example.
2541      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
2542        flags and modified pkg/seaice accordingly.
2543    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
2544        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
2545        non-local transport term.
2546    
2547    checkpoint51e_post
2548    o pkg/mom_vecinv:
2549      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
2550      - add time-ave diagnostic of vorticity advection.
2551    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
2552    o atmospheric geopotential: - include water vapor effect;
2553                                - use p^kappa in p* scaling.
2554    o land pkg: read initial state from files.
2555    o AIM : add stratospheric drag in the upper level
2556    
2557    checkpoint51d_post
2558    o change function ILNBLNK (=> last non-blank char.) to return zero
2559      (instead of the string length) when the string. char is empty
2560    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
2561    o modif's to restore TAMC compatibility
2562      - avoid "_d" constructs in PARAMETER declarations
2563      - avoid interrupting lines by comment lines
2564    o Use cluster local disks for purely local I/O
2565      vs. globally visible disks needed for ctrl stuff
2566      (merged from ecco-branch)
2567      - new active_file_loc... and mdsio_..._loc routines
2568      - affected packages: autodiff, ctrl, grdchk, mdsio
2569    
2570    checkpoint51c_post
2571    o introducing integer flag debugLevel
2572      - debLevZero: suppress all output
2573      - debLevA: standard
2574      - debLevB: equivalent to current debugMode=.TRUE.
2575    o introducing pathname variable mdsioLocalDir for mdsio
2576      that can be specified at runtime
2577      (relevant for cluster I/O to local disk)
2578    `
2579    >>>checkpoint51b_post
2580    adjoint of ptracers
2581    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
2582    o extended state in checkpoint_lev?, etc.
2583    o alternative ctrl/cost with tr1 or ptracer
2584    o new comlev1_bibj_ptracers
2585    o new ptracers.flow
2586    o made ptracers_forcing same as external_forcing_s
2587    o added verification for adjoint with ptracers
2588      - adm. grdchk fail so far
2589      - tlm. grdchk OK
2590      - checked tapelev/comlev recomputations: OK
2591    <<<checkpoint51b_pre
2592    
2593    checkpoint51a_post
2594    o added code for biogeochemistry package
2595      - new pkgs: dic, gchem
2596      - new subroutine in ptracers
2597    o modify code for biogeo packages
2598      - in model/src and pkg/ptracers
2599    
2600    checkpoint51
2601    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
2602      - autodiff, ctrl, exf, grdchk, seaice
2603      kept separate packages
2604      - cost, ecco, obcs
2605    o updating verification/internal_wave, verification/lab_sea
2606      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
2607    
2608    checkpoint50i_post
2609    o Preparing next differentiable checkpoint and sync
2610      of MAIN vs. ecco-branch
2611      - 1st step: this one is differentiable
2612      - 2nd step: next(! not this) checkpoint will have updated packages
2613                  from ecco-branch)
2614    
2615    checkpoint50h_post
2616    o new package "land": provide surface BC for AIM.
2617    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
2618    o AIM: use true log-P extrapolation for near surface temp (= as in
2619        F.Molteni paper) ; update aim.5l_cs output.
2620    o New variable in PARM03 for more flexible pickups
2621    o somewhat cleaned package initialisation sequence for
2622      ctrl/ cost/ ecco/ in packages_... routines
2623    
2624    checkpoint50g_post
2625    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
2626      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
2627      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
2628        made the default because of faster convergence than ADI
2629    
2630    checkpoint50f_post
2631    o exf totally restructured
2632      - replaced all exf_set_ routines by one generic exf_set_gen.F
2633        and made sure it's still differentiable
2634      - split exf_getffields.F into new exf_bulkformulae.F
2635      - exf_inscal_/exf_outscal_ suffixes consistent with field names
2636      - updated adjoint/makefile and relevant verif. accordingly
2637    
2638    checkpoint50f_pre
2639     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
2640          + change Evap over land. (update aim.5l_cs output)
2641     o added missing .cvsignores and made uniform across expts
2642     o changed configuration of tidal_basin_2d expt
2643     o added pkg/debug functions for tracing code in fatal crashes
2644     o tidied pkg/monitor to use MONITOR_OPTIONS.h
2645     o new fn in pkg/monitor to stop model if solution grows too big
2646     o removed lots of single quotes from comments
2647    
2648    checkpoint50e_post
2649    o make KPP work with PTRACERS
2650     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
2651       nearly a copy of kpp_transport_s
2652     - there is no analogue to SurfaceTendencyS, so I have to use
2653       gPtr(of the surface layer) instead
2654    o add a new platform SunFire+mpi (SunFire 15000) to genmake
2655    checkpoint50e_pre
2656    
2657    checkpoint50d_post
2658    o change kpp output from multiple-record state files to single-record state
2659      files analogous to write_state.F
2660    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
2661      analogous to the cg2d-related output.
2662    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
2663      so that writing to internal file fn (with length 512) fails.
2664    checkpoint50d_pre
2665    
2666    checkpoint50c_post
2667    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
2668    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
2669    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
2670    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
2671    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
2672    
2673    checkpoint50c_pre
2674    Merging from release1_p13:
2675    o bug fix for pkg/seaice dynamic solver
2676    o Added SEAICE_initialHEFF to pkg/seaice
2677    
2678    checkpoint50b_post
2679    o store u*,v* in gU,V instead of in guNm1,gvNm1
2680    o in order to put the momForcing out of the Adams-Bashforth:
2681      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
2682      to timestep.F
2683    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
2684    o re-generate output for highly sensitive test-exp:
2685       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
2686    
2687    checkpoint50b_pre
2688    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
2689    o corrected CPP option mismatch in exf_Bulk... functions for case
2690      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
2691    
2692    checkpoint50a_post
2693    o Bug fix for merging between c50 and KPP.
2694      ikey was passed from thermodynamics to kpp_calc via
2695      common block rather than being recomputed in kpp_calc,
2696      in contradiction with new key itdkey.
2697      New key ikppkey created, and tamc.h headers updated.
2698    
2699    checkpoint50
2700    - 2nd step of merge with ecco-branch:
2701      merge changes in ecco-branch back into main trunk
2702    - bug fix in find_alpha
2703    - more storing in gmredi_calc_tensor.F, kpp_routines.F
2704    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
2705    - merged some sliced AD support routines
2706    
2707    checkpoint49
2708    merged from ecco-branch:
2709    o exf:
2710      - Enable initialisation of forcing fields to constant
2711        (runtime) values.
2712      - in exf_getffields.F
2713        Reduce i-/j-loop to interior domain, discarding overlaps.
2714        That also fixes wrong TAF-key computations for key_1, key_2
2715        with bulf formulae.
2716      - exf_init.F modify #ifdef for exf_init_evap
2717      - exf_getffieldrec.F, ctrl_getrec.F
2718        The following INT-usages are not safe:
2719          fldsecs  = int(fldsecs/fldperiod)*fldperiod
2720          fldcount = int(fldsecs/fldperiod) + 1
2721        and were modified.
2722    o autodiff: checkpoint_lev...
2723      - updated storing for bulk formulae (some arrays were missing)
2724      - added state for seaice package
2725      - synchronized with main branch
2726    o DIVA:
2727      Modif.s in
2728      - the_main_loop.F
2729      - the_model_main.F
2730      and added cost_final_restore.F cost_final_store.F
2731      o With these changes, it is possible to fully separate
2732        the first forward run to compute the cost function (mdthe_main_loop)
2733        and adjoint runs over individual DIVA intervals (adthe_main_loop)
2734        into separate model executions.
2735        This enables better tuning of DIVA to given queue sizes.
2736      o Loss of cost function value in consecutive DIVA runs is
2737        fixed by storing to 'costfinal' file.
2738      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
2739        beginning/end of adjoint integration is accounted for.
2740      The current changes apply to TAF-1.4.26.
2741      TAF has one remaining bug, requiring one manual change
2742      (see MITgcm manual).
2743    o cal: synchronized between MAIN and ecco-branch
2744    
2745    checkpoint48i_post
2746    o Changes to restore differentiability of code w.r.t. previous tag
2747      (mostly adding new routines to make list and replacing
2748      pressure by totPhiHyd).
2749    o Updated and merged grdchk package
2750      - has both ADM and TLM checks
2751      - works for single- and multi-proc.
2752      - output cleaned
2753      - worked successfully for parallel DIVA
2754    o genmake:
2755      - Adding -platform=SP4
2756      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
2757    o Modif. for DIVA:
2758      ctrl_unpack should not be called in intermediate DIVA interval.
2759      (similar thing would apply for active files such as
2760      tbar, sbar, psbar, which should not be reinitialised;
2761      only relevant for ecco-branch)
2762    
2763    checkpoint48h_post
2764    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
2765    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
2766    o Added SEAICE_initialHEFF to pkg/seaice
2767    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
2768    
2769    checkpoint48g_post
2770    --- EOS:
2771    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
2772      store total Potential in totPhyHyd for diagnostics & EOS.
2773    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
2774    --- Pressure/geopotential gradient:
2775    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
2776    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
2777      ( changes results of global_ocean_pressure )
2778    o NLFS + z-coord.: add eta*Rho' contribution.
2779    o accurate phiHyd when using interface-W at the middle between 2 centers
2780     ( changes results of ideal_2D_oce )
2781    o includes r* 2nd term in potential gradient.
2782    
2783    checkpoint48f_post
2784    Merging from release1_p12:
2785    o Modifications for using pkg/exf with pkg/seaice
2786      - improved description of the various forcing configurations
2787      - added basic radiation bulk formulae to pkg/exf
2788      - units/sign fix for evap computation in exf_getffields.F
2789      - updated verification/global_with_exf/results/output.txt
2790    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
2791      (SBO) core products, including oceanic mass, center-of-mass,
2792      angular, and bottom pressure (see pkg/sbo/README.sbo).
2793    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
2794      to avoid negative values in shallow regions.
2795      - updated verification/natl_box/results/output.txt
2796      - updated verification/lab_sea/results/output.txt
2797    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
2798    o Added useSingleCpuIO option (see PARAMS.h).
2799    o Updated useSingleCpuIO option in mdsio_writefield.F to
2800      work with multi-field files, e.g., for single-file pickup.
2801    o pkg/seaice:
2802      - bug fix in growth.F: QNET for no shortwave case
2803      - added HeffFile for specifying initial sea-ice thickness
2804      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
2805    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
2806      kpp_transport_t.F, forward_step.F, and the_main_loop.F
2807    o pkg/seaice:
2808      - adjoint-friendly modifications
2809      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
2810    
2811    checkpoint48e_post
2812    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
2813    o dynamics: change definition of computational domain & adapt mom_fluxform
2814      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
2815    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
2816        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
2817        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
2818        global_ocean.90x40x15 global_with_exf global_ocean_pressure
2819        inverted_barometer solid-body.cs-32x32x1
2820      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
2821    
2822    checkpoint48d_post
2823    o in preparation for r*:
2824     a) use pre-computed gradient of hydrostatic potential:
2825        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
2826     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
2827        => affects results of glob_oce_pressure (different truncation error)  
2828      update output.txt of ideal_2D_oce & global_ocean_pressure
2829    
2830    checkpoint48d_pre
2831    o in preparation for r*:
2832      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
2833      pass the 2 comp. of the grad. as arguments to momentum S/R.
2834      but for the moment, only used if it does not change the results.
2835    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
2836    
2837    checkpoint48c_post
2838    Modifications in treatment of initial flux forcing controls
2839    to avoid extra storing of flux fields.
2840    
2841    checkpoint48c_pre
2842    o Added tidal_basin_2d experiment (currently 1D!)
2843    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
2844    
2845    checkpoint48b_post
2846    o r* coordinate added in #ifdef NONLIN_FRSURF block.
2847     (modification to pressure gradient not yet implemented)
2848    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
2849      (for U & V) that are used for vertical advection of momentum.
2850    
2851    checkpoint48a_post
2852    o In preparation for r*, use temp. array to compute vertical transport
2853       in flux-form momentum pkg. => change results of few test-exp.
2854      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
2855                        lab_sea, natl_box & plume_on_slope
2856    
2857    checkpoint48
2858    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
2859    
2860    checkpoint47j_post
2861    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
2862    o moved adexch from forward_step to addummy_in_stepping
2863    o added exch in ctrl_map_...
2864    o aveFreq.=0. at end of cost_final to avoid overwrite in
2865      reverse checkpointing loop
2866    o Yet more changes in gmredi:
2867      * adgmredi_calc_tensor
2868        avoiding all recomputation of gmredi_slope_limit
2869      * adgmredi_x/y/rtransport
2870        added flag for excessive storing to avoid recomp. of
2871        u/v/rtans, dTdx/y/z
2872        -> this is not really necessary and very memory-consuming
2873      * adgmredi_slope_psi:
2874        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
2875      * gmredi_slope_limit
2876        re-activated full calculation of taperfct for case 'ac02'
2877    o updating verification/ adjoints of carbon, global_ocean.90x40x15
2878    
2879    checkpoint47i_post
2880    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
2881    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
2882      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
2883    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
2884    o gmredi: fix few bugs.
2885    
2886    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
2887    This will be a good checkpoint to plug into the ecco-branch.
2888    o few modif.'s to get latest version adjointed
2889      (mainly kick out code in ini_linear_phisurf)
2890    o modif's to run adjoint with exactConserv
2891    o case GM_BOLUS_ADVEC should be cleaned
2892      S/R gmredi_slope_psi should be cleaned
2893    o verification/carbon now has exactConserv=.TRUE.
2894    
2895    checkpoint47g_post
2896    o time-average AIM output: becomes independent from statvars time-average
2897      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
2898    o After TAF bug fix:
2899      Tested adjoint of gmredi package.
2900      Tests were done with checkpoint47 rather than with latest
2901      checkpoint47f_post since the latter is broken for the adjoint
2902      verification/carbon/ contains both ADM and TLM gradient checks.
2903    Here they are, before they get changed/lost/stolen.
2904    Mostly modif.'s to fix numerical sensitivities.
2905    Gradient checks OK for
2906    - GM_taper_scheme:
2907      * clipping
2908      * ac02
2909      * linear
2910      * glw91
2911      * dm95
2912      * ldd97
2913    - GMREDI_OPTIONS:
2914      * GM_VISBECK_VARIABLE_K
2915      * GM_NON_UNITY_DIAGONAL
2916      * GM_EXTRA_DIAGONAL
2917      * GM_BOLUS_ADVEC
2918    in conjunction with data.gmredi parameters to be checked in
2919    in a few minutes under verification/carbon/code/
2920    
2921    checkpoint47f_post
2922    Merging from release1_p10:
2923    o modifications for using pkg/exf with pkg/seaice
2924      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
2925        and SEAICE_EXTERNAL_FLUXES
2926      - pkg/exf CPP options EXF_READ_EVAP and
2927        EXF_NO_BULK_COMPUTATIONS
2928      - usage examples are Experiments 8 and 9 in
2929        verification/lab_sea/README
2930      - verification/lab_sea default experiment now uses
2931        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
2932    
2933    checkpoint47e_post
2934    o created a tag prior to creating a branch
2935    
2936    checkpoint47d_post
2937    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
2938      at the bottom boundary had an erroneous half slip boundary condition
2939    o added bottom drag and no slip boundary condition capabilities to
2940      oceanic pressure coordinates code
2941    o added new verification experiment global_ocean_pressure, this experiment is
2942      also described in the tutorial section of the manual
2943    checkpoint47d_pre
2944    
2945    checkpoint47c_post
2946    o Added a verification experiment for a global cubed-sphere ocean run
2947      -  verification/global_ocean.cubed32x32x30
2948      -  uses pkg/therm_seaice and pkg/bulk_forcing
2949    
2950    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
2951    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
2952      when using P-coordinate; only implemented for atmospheric config.
2953    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
2954      NOTES: requires option NONLIN_FRSURF to be "#define".
2955    o update advect_xz/results/output.txt (left from checkpoint44g_post)
2956    
2957    checkpoint47b_post
2958    Merging from release1_p9:
2959    o pkg/seaice
2960      - removed GOTO's and added taf directives
2961      - double precision constants to reduce the g77 (Linux)
2962        to F77 (SGI) differences reported in release1_p8
2963    o tools/genmake
2964      - added SGI options
2965    o verification/testscript
2966      - updated to that of checkpoint47a_post
2967    o verification/global_ocean.90x40x15/input/eedata
2968      - modified for SGI f77 compatibility
2969    o verification/lab_sea
2970      - added description of sea-ice model
2971      - added missing matlab routines
2972      - added test of thermodynamics parallelization
2973    
2974    checkpoint47a_post
2975    o new pkg: aim_v23
2976     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
2977       for now, keep the same surface forcing as before.
2978     - Part-Cell implemented into AIM; check that Heat & Water are conserved
2979     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
2980     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
2981    o add diagnostic of surface correction term in monitor output
2982    
2983    o bulk_force and therm_seaice
2984    - Two packages:  bulk_force (Bulk forcing)
2985      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
2986    - Earlier integration from Stephaine Dutkiewicz
2987      and Patrick Heimbach.
2988    - Two ifdef statements for compile time,
2989       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
2990    
2991    checkpoint47
2992    differentiable version of checkpoint46n_post
2993    o bug fix in quasihydrostaticterms
2994    o * "clean" adjoint code (in terms of extensive recomputations)
2995        can now be obtained for all GMREDI options (i.e. for
2996        - GM_VISBECK_VARIABLE_K
2997        - GM_NON_UNITY_DIAGONAL
2998        - GM_EXTRA_DIAGONAL
2999        - GM_BOLUS_ADVEC )
3000      * However, wrong gradient check problem remains unsolved.
3001      * New CPP options have been introduced for different
3002        tapering schemes
3003    o external_fields_load now part of differentiation list
3004    o pressure needs multiple storing;
3005      would be nice to have store_pressure at beginning or
3006      end of forward_step, e.g. by having phiHyd global (5-dim.)
3007      (NB: pressure is needed for certain cases in find_rho,
3008      which is also invoked through convective_adjustment).
3009    o recomputations in find_rho for cases
3010     'JMD95'/'UNESCO' or 'MDJWF' are OK.
3011    o #define ATMOSPHERIC_LOADING should be differentiable
3012    o ini_forcing shifted to begining of initialise_varia
3013    o Incorporating QNVS line search routines into MITgcm
3014      (this is separate code, and therefore not under pkg)
3015      lsopt/, optim/
3016    o Updated verification/carbon/
3017      - #define GM_VISBECK_VARIABLE_K
3018      - GM_taper_scheme    = 'ldd97'    
3019    
3020    checkpoint46n_post
3021    Merging from release1_p8:
3022    o verification/natl_box:
3023      updating new external_fields_load routine
3024    o New package: pkg/seaice
3025      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
3026      The sea-ice code is based on Hibler (1979-1980).
3027      Two sea-ice dynamic solvers, ADI and LSR, are included.
3028      In addition to computing prognostic sea-ice variables and diagnosing
3029      the forcing/external data fields that drive the ocean model,
3030      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
3031      The implied surface heat flux is then stored in variable
3032      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
3033      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
3034      non-local transport term.  Because this call precedes model
3035      thermodynamics, temperature under sea-ice may not be "exactly" at
3036      the freezing point by the time theta is dumped or time-averaged.
3037      N.B.: fairly large differences in accuracy occur across
3038            different platforms/compilers; comparison between
3039            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
3040            generated output gives:
3041       T           S           U           V
3042      C D M    c        m  s        m  s        m  s        m  s
3043      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
3044      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
3045      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
3046    
3047      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
3048    o GAD:
3049      - generated new common blocks to account for call of
3050        same gad routines with differing traceridentities
3051        (needed to modify tracerIdentity indices in GAD.h)
3052      - generated separate common blocks for case useCubedSphereExchange
3053        (Department of Futurology)
3054      - parameter lists to gmredi_?transport: added tracerIdentity
3055      - added new key indices to tamc.h
3056    o external_fields_load:
3057      - added this routine to TAF list
3058      - needed to make some common blocks global and additional storing
3059        along the same lines as exf package (checkpoint_lev?_directives.h)
3060    o exf:
3061      updated external forcing package
3062      - bug fixes carried over from ecco-branch
3063        (missing OBCS_OPTIONS.h in two routines)
3064      - enable easy to use "no forcing".
3065      - added exf I/O for atmospheric loading
3066      - added exf I/O for runoff data
3067      - transfered scaling between exf <-> MITgcm to exf namelist
3068    o Adding new verification experiment global_with_exf.
3069      This verification experiment is almost identical to the
3070      global_ocean.90x40x15 experiment, except that it uses
3071      the exf (and cal) package instead of the
3072      external_fields_load routine (cf README file).
3073    
3074    checkpoint46m_post
3075    o modified testscript to return -- when there are no lines of "%MON" output
3076    o added new flag "quasiHydrostatic" for QH mode
3077      and new routine quasihydrostaticterms()
3078    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
3079      New routine: mom_u_coriolis_nh()
3080    o fixed sign of non-hydrostatic metric terms in u and v equations.
3081      Depend on correct sign of gravitySign.
3082    o added work.pc* to .cvsignore in aim directories using ifc
3083    o introduced flag for controllin non-hydrostatic metric terms
3084    o removed gravitySign from PARM04
3085    o switched to g77/ifc from pgf77 in aim experiments
3086    
3087    checkpoint46l_post
3088    o made convective adjustment work with pressure coordinates:
3089     - changed the direction of k-loop in convective_adjustment.F for the
3090       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
3091     - adjusted the reference pressure k-index in convective_adjustment.F
3092     - adjusted the convection condition in convect.F (in analogy to
3093       calc_ivdc.F)
3094     - convective_adjustment no longer computes anything on the halos
3095     - removed the warnings about negative salinity from find_rho.F and
3096       find_alpha.F; instead the new routine look_for_neg_salinity, called
3097       at the beginning of find_rho, find_alpha, and find_beta, does a
3098       check of the entire slice, if CPP-option
3099       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
3100    checkpoint46l_pre
3101    
3102    checkpoint46k_post
3103    o fixed the verification/global_ocean.90x40x15 experiment:
3104     - new bathymetry (the world according to A., JMC, and M.)
3105     - new initial fields and forcing fields (*.bin files)
3106     - new POLY3.COEFFS (for the next release one should switch to a full
3107       equation of state: JMD95P or MDJWF)
3108     - fixed several errors and redundancies in the data file
3109     - experiment uses looped cells
3110     - added matlab directory with diagnostic scripts for plotting of output
3111    
3112    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
3113     - read AIM physics parameters from a file (data.aimphys)
3114     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
3115    
3116    checkpoint46j_post
3117    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
3118    o move wVel computation at the end of the time step, in S/R integr_continuity
3119    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
3120    o update timeave pkg for wVel diagnostic.
3121    checkpoint46j_pre
3122    
3123    checkpoint46i_post
3124    o Clean up AIM package (and keep the results unchanged):
3125      include CPP_OPTION and use IMPLICT NONE in all routines ;
3126      declare all the variables _RL ; use _d 0 for all numerical constants.
3127      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
3128    
3129    checkpoint46h_post
3130    o cleaned up the use of rhoNil and rhoConst.
3131      - rhoNil should only appear in the LINEAR equation of state, everywhere
3132        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
3133        and the dynamical equations are all divided by rhoConst
3134    o introduced new parameter rhoConstFresh, a reference density of fresh
3135      water, to remove the fresh water flux's dependence on rhoNil. The default
3136      value is 999.8 kg/m^3
3137    o cleanup up external_forcing.F and external_forcing_surf.F
3138      - can now be used by both OCEANIC and OCEANICP
3139    checkpoint46h_pre
3140    
3141     Added code to convert surface volume flux (fresh water) into
3142     a mass flux when using P coordinates in the ocean (OCEANICP).
3143     Note: It assumes you have set rho0=rhoConst=density of fresh water.
3144    
3145    checkpoint46g_post
3146    o Include a new diagnostic variable phiHydLow for the ocean model
3147      - in z-coordinates, it is the bottom pressure anomaly
3148      - in p-coordinates, it is the sea surface elevation
3149      - in both cases, these variable have global drift, reflecting the mass
3150        drift in z-coordinates and the volume drift in p-coordinates
3151      - included time averaging for phiHydLow, be aware of the drift!
3152    o depth-dependent computation of Bo_surf for pressure coordinates
3153      in the ocean (buoyancyRelation='OCEANICP')
3154      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
3155        Theta, Salinity, and Pressure in the parameter list. This routine is
3156        presently contained in find_rho.F. This routine does not give the
3157        correct density for 'POLY3', which would be a z-dependent reference
3158        density.
3159    o cleaned up find_rho
3160      - removed obsolete 'eqn' from the parameter list.
3161    o added two new verification experiments: gop and goz
3162      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
3163    checkpoint46g_pre
3164    
3165    checkpoint46f_post
3166    o Enable tangent linear (forward mode) gradient checks:
3167      - extended active file handling to g_... files
3168      - added TANGENT_SIMULATION to theSimulationMode
3169      - extended grdchk package accordingly
3170    o added tangent linear setup in verification/carbon/code_ftl
3171    o added adjoint setup in verification/front_relax/code_ad
3172    
3173    checkpoint46e_post
3174    o Added new equation of state -> MDJWF
3175      - EOS of McDougall et al., 2002, JAOT, submitted
3176      - caveat: the equation of state is only valid for a smaller (more
3177        realistic?) range of values than JMD95P/Z and UNESCO
3178      - added masks to the calculation of pressure in store_pressure
3179      - added more check values for density in check_eos (ini_eos.F), some of
3180        the old check values are out of the range of the MDJWF-eos, so don't
3181        expect perfect matches for those
3182    checkpoint46e_pre
3183    
3184    checkpoint46d_post
3185    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
3186      'OCEANICP', also initialised field pressure correctly in ini_eos in the
3187      case of pressure coordinates. eosType='JMD95Z' in
3188      combination with buoyancyRelation='OCEANICP' now causes an error.
3189    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
3190      in find_alpha/beta.
3191    checkpoint46d_pre
3192    
3193    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
3194      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
3195    
3196    checkpoint46c_post
3197    o Changes necessary for ocean in p-coordinates
3198     -  Added new buoyancy relation = 'OCEANICP'
3199     -  Added new parameters = gravitySign (this used to be contained inside
3200        the factor dRdZ which I added when we first switched to R coordinates).
3201     X GM/Redi is not compatible (yet)
3202     X bottom drag and no-slip need to be debugged.
3203    checkpoint46c_pre
3204    
3205    checkpoint46b_post
3206    o Added new equation of state -> JMD95Z and JMD95P
3207      - EOS of Jackett and McDougall, 1995, JAOT
3208      - moved all EOS parameters into EOS.h
3209      - new routines ini_eos.F, store_pressure.F
3210    o Added UNESCO EOS, but not recommended because it requires
3211      in-situ temperature (see JMD95)
3212    o Modified formatting for knudsen2.f in utils/knudsen2 and added
3213      unesco.f to be used with POLY3
3214    checkpoint46b_pre
3215    
3216    checkpoint46a_post
3217    o Added (atmospheric) pressure loading
3218      - new field in FFIELDS.h, etc...
3219      - new cpp flag ATMOSPHERIC_LOADING
3220    o Changed hFacC to _hFacC in calc_phi_hyd.F
3221    o Added SHORTWAVE_HEATING to some files for consistency
3222    checkpoint46a_pre
3223    
3224    checkpoint46
3225    further merges from release1_p5
3226    o new ctrl package
3227      - adopted from ECCO environment to enable optimization
3228      - added Eliassen Palm fluxes to controls
3229    o added Eliassen Palm flux controls to gradient check package
3230    o cost package
3231      - Compatible with new ctrl package
3232      - added Eliassen Palm cost hooks
3233      - modif's of existing cost functions
3234    o Adjoint-related bug fixes in kpp:
3235      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
3236      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
3237    o autodiff package
3238      - flow directives:
3239        + new for S/R do_the_model_io
3240        + enhanced for S/R checkpoint
3241        + new gmredi.flow
3242      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
3243        disable adcommon.h/g_common.h by default.
3244      - fixed problem for adjoint of global_max
3245    o modified verification/carbon/
3246    o New setup for adjoint of global_ocean
3247    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
3248    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
3249    o incorporated hooks for sponge layer code (external_forcing.F)
3250    
3251    checkpoint45d_post
3252    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
3253    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
3254      (affects plume_on_slope "cg2d" output)
3255    o add new parameter deltaTfreesurf for free-surface time stepping
3256    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
3257    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
3258    o change phiMin in exp1 (to agree with documentation)
3259    o add new flags:
3260     - T,S forcing inside/outside Adams-Bashforth
3261     - turn off temp,salt advection and/or forcing
3262     - for each tracer, define internal flag for multiDimAdvection & A-B
3263    o monitor: change definition of KE to check conservation of Energy
3264    
3265    checkpoint45c_post
3266    o Removed f90 comments ("!")
3267    o Modified initialisations to enable exf package for MITgcm
3268      (without invoking ECCO_PACKAGE).
3269    o modifications to gradient check package (Martin Losch)
3270      - enable centered differences
3271      - modified format of standard output
3272    
3273    checkpoint45b_post
3274    o cleaned exchange calls in cg2d
3275    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
3276    o included CPP option SINGLE_LAYER_MODE in thermodynamics
3277      to configure barotropic setup (Martin Losch)
3278    o moved some initialisations within bi,bj loop in dynamics
3279      (TAF flow dependency)
3280    o in initialise_varia, moved call packages_init_variables
3281      before convective_adjustment_init
3282      (corresponding adjustment of TAF tape initialisation).
3283    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
3284    
3285    checkpoint45a_post
3286    o compute Rho over the whole domain (extend iMin,jMin indices)
3287    o specific exchange for X-slice domain (case Ny=1)
3288    o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
3289    o solve_for_pressure : set cg2d_x to zero where OBCS are applied
3290    
3291    checkpoint44h_post = checkpoint45
3292    o Fix to restore differentiability:
3293      place at which packages_init_variables is called in
3294      initialise_varia is crucial for reverse control flow.
3295    o modifications in GMRedi to enable stable adjoint
3296      (corresponding modif's in thermodynamics, dynamics)
3297    o added missing hook for sponge layer code in external_forcing
3298    o modified test cost functions
3299    o storing in gad_advection (plus removal of write(0,*)!
3300    o missing headers TR1.h added in convective_adjustment routines
3301    o errorMessageUnit set non-equal zero in eeboot
3302      (conflict on some platforms, e.g. IBM SP3)
3303    o modified carbon verif.
3304    
3305    checkpoint44h_pre
3306    o vertical grid option: allow to put the Interface at the middle between
3307      2 cell-centers ; replace delZ in pkg/kpp by drF.
3308    o GM Advective form: Tracers are advected using the residual transport (=
3309      Euler+GM-bolus); set param GM_AdvSeparate=T to return to previous form.
3310    
3311    checkpoint44g_post
3312    o fix surface correction term in multiDimAdvection (affects plume_on_slope
3313      results) ; ifdef missing in thermodynamics.F
3314    
3315    checkpoint44f_pre,checkpoint44f_post
3316    o added PTRACERS package
3317      This allows an arbitrary number of passive tracers to be integrated
3318      forward simultaneously with the dynamicaly model.
3319      + Implemented so far:
3320        - basic forward algorithm (time-stepping, advection, diffusion, convection)
3321        - I/O and checkpointing
3322        - GM/Redi  *but*  using the GM/Redi coefficient of Salt
3323      + Not implemented so far:
3324        - KPP
3325        - OBCS
3326      + No specific example supplied (yet) but global_ocean.90x40x15 has the
3327        necessary data.ptracer file. Simply use -enable=ptracers and uncomment
3328        line in data.pkg.
3329      + This package is disabled by default since it increases storage.
3330    
3331    
3332    o testscript: added -cleanup option
3333    o Shap_filt: a) new shap_filt S/R to use no-slip BC with S2 filter
3334                 b) enable to filter 2D fields.
3335    
3336    checkpoint44e_pre,post
3337    o re-wrote convective adjustment to use pre-calculated weights
3338      Affects: model/src/convective_adjustment.F, convective_adjustment_ini.F
3339      Adds:    model/src/convective_weights.F, convectively_mixtracer.F
3340      Original calls to convect() still in place.
3341    
3342    chkpt44d_pre,post
3343    o added missing EXCLUDE_MONITOR flags
3344    o changed "e" to "_d" in gmredi_slope_limit, gmredi_slope_psi
3345      (incompatible typ in MIN/MAX expressions caused problems
3346      on IBM SP3)
3347    o in genmake added variable MAKEDEPEND
3348      plus resetting for case SunOS
3349    o added timer_stats.c routine for IBM SP3
3350    o removed variables in dynamics
3351    !!! I forgot to create tag chkpt44d_pre !!!
3352    !!! But chkpt44d_pre = chkpt44c_post    !!!
3353    
3354    o real fresh water flux implemented with non-linear free-surface.
3355    
3356    chkpt44c_pre,post
3357    o few fix (mask in shap_s2, EmPmR in external_field_load,
3358      USE_NATURAL_BCS in solve_for_P);
3359    o add arguments myIter & myTime to S/R obcs_calc & solve_for_P
3360    
3361    checkpoint44b_pre/_post
3362    o merge of relevant stuff from the ecco-branch:
3363      - genmake: removed $S64 overwrite for case SunOS
3364      - pkg/exf: update and corrections for field swapping and obcs
3365      - pkg/ecco: parameter lists for the_model_main, the_main_loop
3366                  harmonized between ECCO and MITgcm
3367      - pkg/autodiff: added flow directives for obcs, mdsio_gl_slice
3368                      updated checkpointing_lev... lists for obcs
3369      - model/src: minor changes in forward_step, plot_field
3370                   added directive for divided adjoint in the_main_loop
3371      - pkg/mdsio: added mdsio_gl_slice
3372    
3373    o check parameters & config (chkpt44a_pre,post)
3374    o OBC and NonLin_FrSurf.
3375    
3376    checkpoint44
3377    o fix bug in mom_vi_del2uv
3378    o select when filters are applied ; add options to zonal_filter (data.zonfilt)
3379    o gmredi: fix Pb in the adiabatic form ; add options (.e.g. Bolus advection)
3380    o update AIM experiments (NCEP input files)
3381    o improve and extend diagnostics (Monitor, TimeAve with NonLin-FrSurf)
3382    o added some stuff for AD
3383    
3384    checkpoint43
3385    o added two new advection tests
3386    o added global 4x4 degree ocean test
3387    o added test of H&S94 with free surface on cube
3388    o some final mods for gradient check, adjoint,...
3389    
3390    checkpoint42
3391      Fixed AD-related problems:
3392    o Store directives up-to-date with re-arranged Adams-Bashforth
3393      (mainly thermodynamics.F)
3394    o New store directives for multi-dim. advection schemes
3395      * new CPP flag ALLOW_MULTI_DIM_ADVECTION
3396      * new common block and key passkey
3397      (mainly gad_advection.F)
3398    o Modified store directives for split of dynamics/thermodynamics
3399      for the case ALLOW_KPP
3400    o Cleaned argument list for timestep_tracer.F
3401    
3402    checkpoint41
3403    o re-formatted/added comments in prologues of key subroutines
3404      to work with protex
3405    
3406  checkpoint40  checkpoint40
3407  o all changes of checkpoint40pre?  o moved calc_gs, calc_gt and calc_tr1 back to model/src
3408    o added FLT (floats) package from Arne along with demo. experiment
3409    o re-arranged Adams-Bashforth scheme for tracers to allow easier
3410      implementation of forward-in-time forcing terms
3411    o more mods for non-linear free-surface including new variable
3412    o modified multi-dim method to work on cube
3413    o bug fix in KPP (from DM)
3414    
3415    checkpoint40pre9
3416    o added DST advection schemes
3417    o fix MPI bug on SGI's
3418    o modifications for non-linear free-surface
3419    o fixed conditionals for fixed flow/passive tracer only mode
3420    o added tension/strain form of stress tensor
3421    o changes to commenting of arguments for TAF/TAMC
3422    o added/updated many matlab scripts
3423    o added multi-dimensional advection method for tracers
3424      
3425    checkpoint40pre8
3426  o new package rw/  o new package rw/
3427    Added method for dumping intermediate local arrays:    Added method for dumping intermediate local arrays:
3428    mdsio_writetile - same as mdsio_writefield except works from inside    mdsio_writetile - same as mdsio_writefield except works from inside

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