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revision 1.122 by jmc, Thu Jan 23 15:35:48 2003 UTC revision 1.922 by dimitri, Wed Dec 5 23:57:44 2007 UTC
# Line 1  Line 1 
1  $Header$  $Header$
2    $Name$
3    
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
8    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
9      SX vector computer.
10    o pkg/seaice:
11      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
12        seaice forcing fields can now be read only through pkg/exf
13      - removed some unused halos
14    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
15    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
16      or U/VICE from U/VWIND before computing U/VSTRESS
17    
18    checkpoint59k
19    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
20      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
21    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
22      all experiments pass when compile with un-initilised var. checking option.
23    o added pkg/salt_plume
24    o script to test restart (for now, in MITgcm_contrib/jmc_script)
25    o pkg/seaice: new read/write pickup version.
26      read meta file and write only fields which are needed to restart.
27      ( same logic as main pickup file ; also using pickupStrictlyMatch )
28    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
29    o lab_sea.hb87: modify the domain & update output.hb87.txt :
30      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
31      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
32      process. Fixed here by closing the domain at the Northern boundary.
33    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
34    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
35      a set of consecutive levels in/from a 3-D array.
36    o pkg/ptracers:
37      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
38      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
39    
40    checkpoint59j
41    o in pkgs: dic, obcs, offline, rbcs:
42      standard way to compute coeff. for time interpolation between 2 time reccords
43      which retains full precision (& make results less dependent on compiler).
44      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
45    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
46      packages instead of reading ice cover and wind speed separately
47    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
48     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
49      to allow to compile customized code before the update)
50    o cleaning-up:
51      - fix CPP instruction syntax in pkg/obcs
52      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
53        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
54      - fix some threads issue in IO parts.
55    o pkg/dic:
56      - add tons of "_d 0" (--> much better testreports !)
57       and then update outputs of tutorial_global_oce_biogeo
58    o pkg/mom_fluxform:
59      add a special version of momentum advection intended to conserve momentum
60      next to a bathymetry step or a coastline edge. (default = off = #undef)
61    o new read/write pickup version:
62      - for now, only implemented for main (mdsio) pickup file.
63      - write out only what is needed to restart; merge pickup_nh , pickup_ph
64        and main pickup together.
65      - read meta file; read only what is needed to restart; stop if a field
66        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
67        if it make sense (even if the restart is not perfect).
68      - if no meta file, assume that pickup to read corresponds exactly to
69        a pickup that would currently be written.
70      - read pickup written in the old format (until checkpoint59i) if it
71        recognizes an old meta file (no field-list).
72      - add a meta file in exp. which starts from a pickup: 2 cases:
73        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
74         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
75        b) a meta file describing the content of the associated pickup file
76         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
77    o pkg/mdsio & pkg/rw:
78      - new routine to read a meta file ; new set of routine to read
79        Multiple-fields file (with meta file).
80    o added open boundary conditions capability for seaice
81        HSNOW, HSALT, UICE, and VICE
82    
83    checkpoint59i
84    o adjoint:
85      * fix multiDimAdvection adjoint
86        (partial recomputation problem by TAF for fVerT(:,:,kDown)
87        and comlev1 size definition (maxpass vs. max. number of tracers)
88      * verification/global_ocean.90x45x15 adjoint now tests
89        NLFS and multiDimAdvection using DST3 (=30)
90      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
91    o pkg/kpp: add "_d 0" to real constant (if missing);
92      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
93      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
94    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
95      for internal parameters related to restart process (formerly from PARAMS.h)
96      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
97    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
98      as argument. (only atm2d & obcs write_pickup have not yet been updated)
99    o pkg/monitor:
100      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
101      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
102      - account for deep Atmosphere factor and density factor (anelastic)
103    o added open boundary conditions capability for seaice HEFF and AREA
104    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
105      thermodynamics
106      - requires a little reorganization, which affects the testreport results
107        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
108        so that now the conservative form is tested
109      - add a few comments
110    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
111    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
112    o add new diagnostics to seaice: advective, diffusive fluxes (only for
113      multidim-advection, for scheme 2 they are not filled) and transports,
114      thermodynamic growth rates
115    o change units of EmPmR (inside the code, + within coupling interface)
116      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
117      Affects results @ truncation level (cg2d match) and update output of
118       experiments: lab_sea(6), global_ocean.90x40x15(10),
119      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
120      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
121      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
122      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
123    
124    checkpoint59h
125    o pkg/exf:
126      - improve vectorization by moving if-statement out of loops in
127        exf_mapfields, exf_radiation
128      - exf_bulkformulae.F: introduce 2D fields and vectorize code
129    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
130    o testreport:
131      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
132        monitor & update offline_exf_seaice exp. output.
133      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
134    o pkg/seaice:
135      - bug fix in the evp solver: boundary conditions were affected be
136        masking of zMax/zMin (changes results)
137      - minor bug fix in boundary conditions in seaice_calc_strainrates
138        (changes results for no_slip)
139      - seaice_lsr.F: make interpolation of eta dependent on boundaries
140      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
141      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
142        stress formulation and no-slip boundary conditions
143    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
144      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
145    o pkg/seaice: a first HSALT time stepping equation has been checked in
146    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
147      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
148      without requiring DO-IF statements
149    o pkg/thsice:
150      use continuous power-law function for partition of energy between lateral
151      melting/freezing and thinning/thickening ; old code using step function
152      still available with #undef THSICE_FRACEN_POWERLAW
153      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
154    o testreport: change AD testing : check against results/output_adm.txt
155      using same scripts as for forward test.
156    
157    checkpoint59g
158    o adjoint testing: in preparation for changing testreport:
159      - output format: cost and grad written on separated lines
160      - ad output results in directory "results" (instead of "results_ad")
161    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
162    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
163    o pkg/ecco: allow user defined cost function contributions
164    o testreport:
165      Allow to choose (per experiment) the list of tested output variables
166       and the main variable (used to issue a pass/FAIL ) ;
167      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
168      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
169      Also modify printing of summary:
170       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
171       b) echo the list of tested variables in the individual summary.txt of
172          each experiment.
173    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
174      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
175      (but still depend on the tile decompostion of the domain).
176    o pkg/seaice: change a discretization detail to make the B-grid code
177      "more symmetric". This change is likely to remove all "ridges/leads" that
178      where quasi-aligned with the grid in B-grid solutions. It may also be
179      the solution to the stress coupling issues with the B-grid.
180    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
181      remove .cvsignore from input dir. (since testreport no longer run here).
182    o pkg/thsice:
183     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
184     - fix reshaping of sea-ice just after advection:
185       melt all the ice only if ice-volume is too small.
186     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
187       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
188     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
189    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
190      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
191    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
192      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
193      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
194      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
195      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
196      -> update output.txt
197    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
198     this affects truncation error: -> update output.txt of exp:
199      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
200      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
201    
202    checkpoint59f
203    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
204    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
205      a bounded range (in forward mode)
206    o pkg/ecco, ctrl, autodiff and mom_common:
207     internal parameter controls, completements of implementations
208    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
209    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
210      (not seem any difference in testing results).
211    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
212       at face corners.
213    o pkg/generic_advdiff:
214     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
215      loop range indices for computing vertical advection tendency
216      and do the calculation in the interior only (no overlap) ;
217      for now, only implemented for SOM advection (to save CPU time).
218     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
219    o exch2 adjoint
220      First set of changes:
221      - add exch2 hand-written adjoint templates
222      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
223        This will require cleanup in pkg/autodiff/*.F
224        (changed routines currently kept separate in verif. code/)
225      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
226        that used to hide exch2 or cubed-sphere specific code
227        (commented via 'cph-exch2')
228    o pkg/seaice
229      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
230    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
231       output of global_ocean.cs32x15.thsice .
232    
233    checkpoint59e
234    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
235      for B-grid vector (not yet tested) and C-grid vector (<- only used
236      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
237    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
238      (#ifdef ALLOW_SALT_PLUME)
239    o gather_2d/scatter_2d: removed halo regions
240    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
241      scheme and the corresponding test case (under front_relax dir). For now,
242      only available with Skew-flux form and not yet tested in realistic set-up.
243      adjoint: store directives updated, but gradient checks deteriorated,
244      so maybe GM/Redi adjoint is now broken.
245    o seaice adjoint
246      * add AREA, HEFF, HSNOW as control variable
247        (should not change lab_sea results)
248      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
249    o pkg/seaice:
250      * added computation of saltFlux in seaice_growth;
251        For time being, sea ice salinity is assumed constant
252        contribution of snow flooding to freshening of sea ice is neglected.
253        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
254        defaults to 0.0 in order to maintain backward compatibility.
255        Typical values for SEAICE_salinity are 4 to 10 g/kg.
256      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
257      * added SEAICE_availHeatFrac, which specifies fraction of surface level
258        heat content used to melt or grow ice
259      * commented out cap of HICE: it helps keep ice thinner
260      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
261      * applied OBCS T/S mask to HEFFM sea ice mask
262    
263    checkpoint59d
264    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
265     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
266     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
267    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
268     and change default value of parameter "GM_Small_Number";
269     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
270       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
271       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
272    o pkg/ecco: cost function when applying pkg/smooth to controls
273    o pkg/ctrl: add forcingPrecond run time parameter
274    o pkg/seaice:
275     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
276     - fix bug in metric terms of u-equation in LSR solver (implicit part),
277       changes verification/lab_sea
278     - rearrange implicit part of u-equation in LSR solver to make it easier to
279       read, understand, and debug. This causes changes at the truncation level.
280     - fix (serious) bug in the boundary conditions (sign error in the implicit
281       part) of the LSR solver. Changes all LSR results.
282     - fixed problem with HSNOW initialization to avoid thick snow when AREA
283       is initilized with small values - does not change lab_sea results.
284     - added HsnowFile initialization capability
285    o pkg/smooth: addition to model/src and pkg/ctrl so allow
286     initialization of pkg/smooth and application to control vector
287    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
288    o dependencies: pkg/profiles requires pkg/cal
289    o pkg/profiles:
290     - added option ALLOW_PROFILES_GENERICGRID
291         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
292         that interpolation information (grid points and coefficients) is provided
293         within the netcdf input files.
294         -> sample matlab scripts can be found in MITgcm_contrib/gael
295         that allow you to prepare netcdf input files.
296     - also modified: cleaner include statements, cleaner error print statements,
297       cleaner stops when error, and more tests of the netcdf input files consistency.
298    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
299    o pkg/seaice:
300     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
301       requires a new routine: seaice_diagnostics_fill.F
302     - make sure that seaice does not move if not forced (pressure replacement
303       method, Hibler and Ip, 1995), changes results
304     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
305     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
306       It is turned off by default (=-1.), because it changes the results.
307     - make it possible to read AREA from a file, too.
308    
309    checkpoint59c
310    o add S/R and diagnostics for oceanic mixed-layer depth
311    o move GMRedi call after all vertical mixing schemes (including KPP)
312    o pkg/thsice:
313     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
314      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
315    o pkg/obcs:
316     - bug fix for balance code
317    o pkg/seaice:
318      - allow values of SEAICE_elasticParm > 1
319      - add new parameter SEAICE_evpTauRelax as an alternative
320        to SEAICE_elasticParm
321      - make lsr boundary conditions free slip (by default), changes result
322      - add code for no slip boundary conditions for lsr
323      - set minimum of zeta to zero (and not 4e8) (changes results)
324      - add a cap on AREA after advecting AREA if seaice_growth is not called
325    o change calculation of Visbeck K:
326      - no longer depend on tapering scheme; instead, compute slope (limited
327        by GM_maxSlope). this is equivalent to what was comuted before with
328        clipping or linear tappering.
329      - fix vertical averaging (wrong by 1/2 level)
330      - leave the old version (but will not be maintained) within
331        #ifdef OLD_VISBECK_CALC / #endif
332      - update output of exp. ideal_2D_oce
333    o change error catch in calc_r_star to improve vectorization
334    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
335      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
336    o adjoint:
337      Re-organized adjoint checkpointing according to Matt Mazloff
338      (but with modifs/completions/cleanups)
339      Storing is now bundled into large arrays to optimized I/O
340      (and second step in cleanup of the_main_loop)
341    
342    checkpoint59b
343    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
344      - export/import (between ocean & coupler) fields needed for ocean DIC.
345    o pkg/seaice:
346      - get rid of three more exchanges seaice_calc_viscosities (required
347        different loop boundaries in seaice_lsr and seaice_ocean_stress)
348      - bug fix in seaice_ocean_stress (update of lab_sea required)
349      - reduce loop boundaries to necessary minimum also in seaice_evp
350      - go back to the old way of computing deltaC/Z as the adjoint likes that
351        better
352    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
353      passive tracer to an Age Tracer) + update output.txt
354    o pkg/exf:
355      - implement A-grid / C-grid selection for wind-stress input files.
356      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
357      for now, in exf_bulk_largeyeager04.F only :
358      - change implementation for case where windspeed + 2. components wind-stress
359        are read-in. AND use rhoConstFresh to convert evap.
360    o pkg/seaice:
361      - use correct EXCH_UV for wind-forcing (on A-grid).
362      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
363        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
364    o pkg/exf:
365      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
366      EXF_INTERPOLATION:
367      - merge global_with_exf/code version of exf_interp_read.F
368        to the main code ;
369      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
370        reading the file ; Important: This options needs to be defined to recover
371        previous code.
372        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
373      - no longer loose real*8 precision along the way when using exf_iprec=64.
374    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
375      - change discretisation of evp-solver in order to avoid another exchange
376        (changes lab_sea) and clean up a little
377      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
378        help the adjoint (this also changes the results slightly)
379      - add a few "_d 0" where they had been missing in seaice_evp.F
380      - cleaning up: remove unused seaice_calc_rhs.F
381    o pkg/exf: some cleaning-up:
382      - change various "constants" into runtime parameters
383      - cleaned-up Large&Yeager04 routine which should eventually
384        replace exf_bulkformulae.F (changed names of S/R and CPP)
385        and merged various ALLOW_ATM_WIND options
386     only used with thsice pkg (in thsice_get_exf.F):
387      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
388        which are used when useStabilityFct_overIce=TRUE (= the default)
389      - change default values of ice & snow emissivity and scale downward LW
390        by ice & snow emissivity.
391    o pkg/thsice:
392     fix few little problems, in thsice_calc_thickn.F:
393      - growth vertically (and not laterally) if iceFrac == iceMaskMax
394      - melt only laterally if hIce < hThinIce (as the comments say)
395      and in thsice_extend.F:
396      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
397      - start to form ice as soon as the minimum ice-volume is reachable.
398     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
399      and cpl_aim+ocn
400    o pkg/kpp
401     - move computation of surface related input fields to KPP into a new
402       subroutine kpp_forcing_surf.F
403     - remove wrong (within bi,bj loops) EXCH calls.
404     - little cleaning (add argument myThid in last position, cvs header ...)
405     - for now, fix conservation problem by exchanging KPPviscAz (may not
406       be the best fix)
407    o pkg/seaice
408     - check for inconsistent evp parameter/cpp-flag combination
409     - remove leftover errIO flat for obsolete name list error handling
410    o OpenAD
411     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
412    
413    checkpoint59a
414    o pkg/seaice: some parameter clarifications and a little bit of clean up
415    o pkg/thsice: rename run-time parameters:
416       himin       -> hIceMin
417       himin0      -> hThinIce
418       hihig       -> hThickIce
419       i0          -> i0swFrac
420       transCoef   -> bMeltCoef
421       frac_energy -> fracMelting
422      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
423       with default values (for now) that do not change the results.
424      remove old version of thsice vars advection in pkg/seaice.
425    o in FFIELDS.h:
426      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
427      - make pLoad & sIceLoad always available (but still only used if
428         ATMOSPHERIC_LOADING is #define).
429    o pkg/kpp: replaced _KPP_RL with _RL
430    o bug fixes for vertical diffusivity computations when both KPP and
431        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
432        are no longer updating the vertical diffusivity array
433        (passed as argument) but are (re-) setting those arrays.
434    o pkg/seaice: fix bug in evp solver, while doing that
435      - change (improve?) discretization of stress computations for both
436        cgrid-lsr and evp solver
437      - add a new routine to compute strain rates
438      - the above changes lab_sea results
439      - add no slip conditions for evp solver (off by default), lsr-version
440        may follow
441      - fix exchange for shear at Z-points (does not change lab_sea)
442      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
443        (to force the user to pick a time step since there is not "safe" way
444        of choosing it)
445      - add principal stress diagnostics
446      - rearrange fields for evp a little to avoid having to call a: too many
447        exchanges and b: exchanges for stress trensor components which we do
448        not have.
449      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
450        of evp, complete rewrite for lsr case (latter is does not yet work
451        in all cases)
452    o pkg/kpp: add code to have mixing in shelf ice caverns
453      - add myThid to all kpp routines (long overdue)
454    
455    checkpoint59
456    o pkg/exf:
457      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
458        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
459      - move exf header files from lower_case.h to UPPER_CASE.h ;
460        add missing cvs Header & Name
461      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
462      - add namelist param. selectStressGridPosition, exf_monFreq
463      - retire many _CLIM routines, and remove data.exf_clim
464        + params moved to data.exf
465        + climsst, climsss now handled by exf_set_gen, i.e.
466          climss?period=0 refers to constant field,
467          climss?period=-12 to monthly forcing
468      - split up namelists in data.exf
469    o pkg/seaice:
470      - remove seaice_exch and seaice_exch_uv
471      - remove superfluous exchange of theta
472      - add myThid to seaice_budget_ocean/ice
473      - add new interface for atmospheric wind forcing (C-grid only)
474        + new routine
475        + two new field (taux, tauy for stress over ice)
476        + removed one global field (DAIRN) for C-grid case only
477    o pkg/thsise
478      - 2nd set of modifs for thsice adjoint in conjunction with exf
479    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
480    
481    checkpoint58y_post
482    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
483      vertical diffusivity, similar to that in MOM4; turned on using
484      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
485      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
486    o Added capability for 3D specification of background vertical diffusion
487      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
488      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
489      "data" file that contains the 3D vertical diffusivity coefficients.
490    o ice dynamics (pkg/seaice) with thsice thermodynamics:
491      - add code within pkg thsice to advect & diffuse sea-ice fields
492      similar to (and will replace) what has been added in  seaice_advdiff.F,
493      but: - conserving Mass, Heat & Salt.
494           - better when using non-linear advection scheme (not yet fully tested)
495           - can also be used in atmospheric set-up (for now, only the diffusion).
496    
497    checkpoint58x_post
498    o IO option for global-file compact format:
499      - add options when generating topology (utils/exch2/matlab-topology-generator)
500      - add I/O capability (pkg/mdsio).
501      - adapt utils/matlab/rdmds.m to read this format.
502      for now long-line format not yet supported by pkg/mdsio (& exch2).
503    o shelfice: add a few diagnostics
504    
505    checkpoint58w_post
506    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
507      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
508      (and replace horiVertRatio in NH code).
509      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
510                         and tutorial_plume_on_slope (sensitive to truncation)
511    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
512      directly to drive seaice model (C-grid only)
513    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
514     - reintroduce computation of wind from stress,
515     - compute tau (in exf_bulkformulae.F) from windstress averaged to
516       mass points to avoid tau = 0
517     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
518    o rdmnc.m: make it work with "global" files created with gluemnc
519    o rdmnc.m : some improvements in dealing with singleton dimension
520      (tested on all testreport mnc output files).
521    o genmake2: disable pkg/profiles if netcdf test fails.
522    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
523    o move call to cal_readparms up to make calendar parameters/variable available
524      to all packages
525    
526    checkpoint58v_post
527    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
528      useDynP_inEos_Zc tested.
529    o pkg/exf: changes to properly interpolate/mask/scale initial fields
530    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
531      and portions thereof.  See read_cs.txt for description and examples.
532    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
533      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
534      following the great-circle arc between those 2 points.
535    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
536      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
537    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
538     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
539     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
540     - still needs work (not working with some options ; efficiency to improve)
541       and serious testing.
542     - use this scheme for temperature & salinity in 2 advection test exp.:
543       advect_xy & advect_xz, respectively.
544    
545    checkpoint58u_post
546    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
547    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
548    o testreport: add option "-skipdir" to skip some test.
549    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
550      momentum calculation.
551    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
552    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
553      remove checkpoint.F and the_correction_step.F (no longer used);
554      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
555    o add option (linFSConserveTr) to correct for tracer source/sink due to
556      Linear Free surface
557    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
558    o pkg/thsice: fix reading mnc-pickups
559    
560    checkpoint58t_post
561    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
562    o pkg/mdsio:
563     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
564       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
565       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
566     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
567     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
568       either MDS_READ_FIELD or MDS_WRITE_FIELD )
569     - new S/R (to replace MDSWRITEMETA), which allows to write more
570       informations (variable names, time ...) to meta files.
571     - modify rdmds.m to give back the meta file content.
572    o pkg/diagnostics: change vertical interpolation to be safer, and more
573       flexible (define p-levels to interpolate to in data.diagnostics);
574      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
575       diagnostic pointer.
576    o pkg/seaice: more cleaning up of seaice_growth, added many comments
577    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
578    o fix multi-category seaice:
579     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
580       SEAICE_MULTICATEGORY
581     - fix short wave heat flux
582    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
583       and allow to use EVP solver. Change forward lab_sea: test both EVP
584       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
585    o Initial check-in of lab_sea adjoint
586      (very similar to natl_box_adjoint/code_seaice)
587      * used C-grid and EVP solver
588      * used KPP, GM/Redi
589      * uses inAdExact=.TRUE.
590      * gradient checks fail for both ADM and TLM
591        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
592        f.d. gradients actually seem more problematic than ADM, TLM gradients;
593        issue is related to forward mismatch between g77 an ifort
594    o pkg/seaice: overhaul of thermodynamics
595     - growth.F and groatb.F are replaced by new routine seaice_growth.F
596     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
597     - move a few global fields out of SEAICE.h into seaice_growth.F and
598       make them 2D (FICE/QNETO/ ...)
599     - remove FO (it is the same as QNETO)
600     - introduce a few local fields to avoid modifying external fields such
601       as atemp, etc.
602    
603    checkpoint58s_post
604    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
605      changed exf_set_gen.F so that
606        genperiod=0 means input file is one time-constant field and
607        genperiod=-12 means input file contains 12 monthly means
608    o CG2D: use pre-computed solver main-diagonal (stored in common block);
609      this affects truncation error ; generate new output file for exp. which
610      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
611        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
612        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
613        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
614        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
615        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
616    o start implementation of deep-atmosphere and anelastic formulation
617    o verification: remove 2nd copy of input files and use script "prepare_run"
618      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
619    o mom_common/vecinv/fluxform: fix a few initialisation isssues
620    o profiles: fix for multithreaded case
621    
622    o diagnostics: rename few diags:
623      s/'PRESSURE'/'RCENTER '/g
624      s/'TICE    '/'oceFreez'/g
625      s/'TAUX    '/'oceTAUX '/g
626      s/'TAUY    '/'oceTAUY '/g
627      s/'SWFLUX  '/'oceQsw  '/g
628      s/DIFx/DFxE/g
629      s/DIFy/DFyE/g
630      and add few ocean-forcing diagnostics:
631      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
632    o modifications to pkg/seaice/growth.F and budget.F, which change results of
633      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
634      as actual snow thickness.  It now refers everywhere to effective snow
635      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
636    
637    checkpoint58r_post
638    o modifications to pkg/seaice/growth.F, which change results of
639      lab_sea experiment: fixes pertain to melting snow over open water, to
640      masking EVAP under sea ice, and to using the correct AREA variable for
641      computations of EVAP, PRECIP, HSNOW, and GHEFF
642    o add ability to read bathy, salt, and theta using MNC (off by def)
643    o add flooding algorithm and advection of HSNOW for pkg/seaice;
644      both are turned off by default and do no change any results
645    o seaice advection with pkg/thsice: a step toward the use of non-linear
646      advection scheme, but #ifdef or commented out for now (requires more EXCH).
647    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
648      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
649      in natl_box (affects results @ truncation level: update output.txt)
650    o multi-threading and IO:
651      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
652      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
653        (needed to work with SingleCpuIO): tested in all verif. exp.
654    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
655      affects the results (but none of the verification test uses this scheme).
656    o Adding some pkg/diagnostics capability to pkg/seaice
657      (will certainly be subject to changes)
658    o ctrl: adding new control variables:
659      lwflux, lwdown, evap, snowprecip, apressure, runoff
660    
661    checkpoint58q_post
662    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
663      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
664      high_res_cube configuration by 4% on Columbia.
665    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
666      add (in global_with_exf/code) a version of EXF_INTERP_READ without
667      dynamical allocation (seems to work in multi-threaded).
668    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
669      single CPU io) so that TAF does not have to see EESUPPORT.h
670    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
671    
672    checkpoint58p_post
673    o obcs: stop if obcs is used with useCDscheme = .true.
674    o shelfice:
675     - fix a sign error so that no slip at shelfice interface works
676     - remove stop for combination non-hydrostatic code and shelfice. That does
677       not mean, that the results are correct, but at least they are numerically
678       stable
679    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
680    o added adjoint exch routined for all exch*3d* routines
681      and updated flow directives
682    
683    checkpoint58o_post
684    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
685      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
686    o change controling S/R for writing pickup file (new S/R do_write_pickup)
687      and clean-up reading/writing of pickup files.
688    o fix local version of read/write pickup (NH part) in rotating_tank/code
689    o simplify EXCH interface:
690     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
691     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
692    o added the regrid package
693    o shelfice:
694     - add a simple boundary layer scheme to reduce noise
695     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
696    
697    checkpoint58n_post
698    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
699       local variable (not in common block).
700    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
701      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
702      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
703        to work with SingleCpuIO.
704    o add "_d 0" to real constant of pkg/cfc subroutines ;
705       update exp. cfc_exemple & tutorial_cfc_offline output files.
706    o multi-threading and IO:
707      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
708        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
709      - barrier before and after reading.
710      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
711      - avoid using MDS_WRITELOCAL for LAND pkg output.
712      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
713        common-block variables ; Allows multi-threading with master-thread IO.
714    o change default MAX_NO_THREADS from 32 to 4 ;
715      and stop cleanly when MAX_NO_THREADS is too small.
716    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
717    
718    checkpoint58m_post
719    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
720       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
721    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
722       keep global_ocean.90x40x15 (for AD testing) with former secondary test
723       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
724    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
725        add MITgcm_tutorials (= code + all the tutorials)
726    o ecco, option to compute cost for total ssh (mean+anom)
727    o consistent with addition of ptracer and ssh in pkg/profiles
728    o profiles: adding ptracer and ssh
729    o testreport: change multi-test output-file name
730      (from output.txt.{name} to output.{name}.txt)
731    o profiles: now ok for mutli-tiles case
732    o seaice: add 4 parameters for different advection schemes for area,
733      (effective) seaice thickness, enthalphy, and snow height. Their default
734      is the standard parameter SEAICEadvScheme
735    o calc_gw:
736     - add cosFacU in zonal viscous flux (harmonic.visc.).
737     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
738       of tutorial_plume_on_slope.
739    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
740    o calc_gw: true flux-form, account for horizontal grid spacing.
741      update rotating_tank results, but not plume_on_slope (affected at
742      truncation level, 11 digits).
743    
744    checkpoint58l_post
745    o calc_gw:
746     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
747     - remove side-drag for now (need to fix it); update plume_on_slope results.
748     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
749    o commit code to make SST/SSS weights spatially variable
750      (based on either variable in-situ or variable initial T/S weights)
751    o pkg/ecco:
752      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
753        now based on horizontally varying weights wthetaLev, wsaltLev
754      * cost_averagesflags now returns year indices in addition to day, month
755      * sflux balance is performed on annual basis
756        (sflxumm, sfluxmm2, bal_sfluxmm)
757      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
758        including separate counting and multipliers
759    o pkg/rbcs
760      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
761    
762    checkpoint58k_post
763    o testreport:
764     - always build in dir. "build" (if not there, mkdir build instead of building
765       & running in input)
766     - run in dir run (if it exists), in build otherwise.
767     - call prepare_run (if input/prepare_run exists)
768     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
769    o pkg/exf modifications to interpolation and rotation routines for more
770       reasonable treatment of North Pole singularity: for tracers North Pole
771       value is set to northernmost zonal-mean value, for zonal velocity it is
772       set to zero, and for meridional velocity it is set to northernmost value.
773    o pkg/exf/exf_check_range.F
774     - add tile index to diagnostics and move stop statement to the very
775       end of the routine.
776    o pkg/diagnostics: (diagnostics_main_init.F)
777      define title of isomorphic variables according to the current config.
778    o pkg/thsice with pkg/seaice dynamics:
779    - fix domain of computation (interior only, required for exf) and do exchanges
780    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
781    o towards a standard way of dealing with multi-threading in MONITOR
782      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
783    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
784       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
785    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
786    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
787    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
788       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
789    o tracer advection:
790     - clean-up and simplify calc_common_factors.F
791     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
792       advection subroutine (but still not used within DST advection S/R)
793    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
794    
795    checkpoint58j_post
796    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
797      from file (collects calls previously in FORWARD_STEP)
798    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
799    o adjoint store dir. adjusted accordingly
800    o genmake2
801      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
802    
803    checkpoint58i_post
804    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
805      on wind stress (SEAICEstressFactor defaults to 1.)
806    o Total number of Timers is finite (<=40): comment out 2 non-essential one
807      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
808    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
809      on CS-grid: no longer loosing mass.
810    o exf & curvilinear-grid: no longer modify longitude xC & xG.
811    o pkg/ggl90: fix sloppy output and fix a bug
812    o pkg/seaice: added SEAICEuseEVPpickup parameter
813      - Set to false in order to start EVP solver with
814        non-EVP pickup files when using SEAICEuseEVP
815      - fix sign error in diffusion in seaice_calc_rhs
816    
817    checkpoint58h_post
818    * Modifications for bottom topography control
819      o replace hFacC by _hFacC at various places
820      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
821      o add non-self-adjoint cg2d_nsa
822      o update autodiff support routines
823      o re-initialise hfac after ctrl_depth_ini
824      o works for 5x5 box, doesnt work for global_ocean.90x40x15
825    * Adding verification for 5x5 box (4-layer) bottom topography control
826    
827    checkpoint58g_post
828    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
829       used for mean seasonal cycle, mean diurnal cycle); add an example
830       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
831    o pkg/ggl90:
832      - add parameter (minimum surface kinetic energy)
833      - fix bug (avoiding division by zero)
834    o couple pkg/thsice to pkg/seaice:
835      - modify advection in seaice to accomodate new scalar fields to be advected
836      - only muliDimAdection scheme work with seaice/thsice
837      - mapping of thsice-variables to seaice-variables, back and forth
838      - does not break the verification experiments, but does not give the
839        desired results either
840    o pkg/seaice
841      - make (default) second order advection a bit less confusing?
842    
843    checkpoint58f_post
844    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
845      to pkg/seaice):
846      - new routines thsice_map_exf and thsice_get_exf provide the interface
847      - add an additional formal parameter to thsice_solve4temp
848    o pkg/exf:
849      - add new fields wspeed, snowprecip (to be able to couple to thsice)
850      - correct Stefan-Boltzmann constant
851      - new parameter for longwave surface emittance
852      - separate some stuff from exf_bulkformulae into new routines  
853        exf_radiation, exf_wind
854      - add new parameters and constants: longwave emissivity for ocean, ice
855        and snow, evaporation parameters over ice
856      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
857        either wind from stress or stress from wind
858    o pkg/thSIce:
859    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
860    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
861       and THSICE_CALC_THICKN
862    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
863    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
864      to make debugging easier.
865    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
866    o pkg/bulk_force:
867      - clean-up comments and parameters ;
868      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
869    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
870      generate new output for test-experiment: aim.5l_cs.thSI
871    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
872      testreport accordingly
873    
874    checkpoint58e_post
875    o SEAICE_CGRID adjoint done
876    o R_STAR adjoint implemented.
877      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
878      * need to sort out init. of h0facc, etc.
879    o Make pkg/profile fully independent of ecco,cost, etc. stuff
880      to be able to use it in pure forward.
881    
882    checkpoint58d_post
883    o upgrade simple test-experiment to tutorial example:
884     step.1: duplicate the experiment and (step.2) will remove the old copy.
885      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
886      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
887      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
888      tutorial_global_oce_biogeo    <- copy of dic_example
889      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
890      tutorial_plume_on_slope       <- copy of plume_on_slope
891      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
892      tutorial_global_oce_optim     <- empty for now (David ?)
893      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
894     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
895    o correct a sign problem in cost_scat.F
896    o obcs and ptracers: fix boundary conditions for advections schemes
897      with larger stencil
898    o thsice adjoint: start
899    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
900      completeness
901    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
902      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
903    o ptracers adjoint:
904      * avoid extensive recomputatations
905      * fix missing re-init. of gptr (missed by TAF)
906    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
907      me to turn off the excessive output to STDOUT that this package produces
908    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
909      and add those terms in Vector-Invariant formulation.
910    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
911      if the control period (xx_hfluxperiod etc) is 0
912    o in profiles pkg, clean routines and fix details
913    o in ecco pkg, reading ssh data:
914      fix problem in case the model does not start at iter0=0
915    o fix mnc-pickup/restart for ptracers
916    o new package prifiles:
917      code to compute profile-based cost by Gael Forget
918      (modifs in ecco, ctrl, autodiff)
919    o Benign bug fix in initialization (spotted by M. Mazloff) of
920      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
921    
922    checkpoint58c_post
923    o adjoint: finish NLFS adjoint and provide reference output in
924      verification/global_ocean.90x40x15/results_ad_nlfs
925    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
926      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
927      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
928      with SEAICE_CGRID defined.
929    o move calendarDumps from "data" to "data.cal" and clean-up the code
930      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
931    o add useEXF & useCAL flags (for now, set in hard-coded way)
932    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
933      (were missing in NH mode, and wrong in quasihydrostatic mode).
934      waiting for Chris updated version of calc_gw to add those CALLs.
935    o fix bug in quasihydrostatic S/R ;
936      add a test for this option: global_ocean.90x40x15.qshyd
937    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
938      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
939    o add on/off flag useOffLine for package OFFLINE
940    o seaice:
941      - modify advection so that it works also on the C-grid
942      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
943        problem in multi-tile runs with C-grid
944      - add flags for clipping ice velocities and/or masking solver forcing
945      - fix drag (ocean on ice) formulation and a bug that caused noise in the
946        C-grid solver
947      - added a few comments to seaice_diffusion.F
948      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
949        are now exclusive)
950      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
951        required re-ordering the code a little:
952       + make DAIRN global variable (defined in SEAICE)
953       + move computation of the viscosities eta and zeta into a new separate
954         routine (because I need to recompute them in seaice_ocean_stress.F)
955    
956    checkpoint58b_post
957    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
958      update output.txt of exp. aim.5l_cs.thSI
959    o various mnc cleanups and improvements:
960      + shrink lookup tables by factor of ~4
961      + better error reporting when running out of lookup space
962      + able to handle longer path/file names (up to 500 chars)
963    o adjoint:
964      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
965      - TBD: "hidden" mom_vecinv recomp. in dynamics
966    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
967     (allow to differentiate between forcing components using new integer flags:
968      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
969     and add new flag to put Dissipation tendency out of Adams-Bashforth.
970    o ecco
971      - enable trend removal from SSH anomaly obs.
972    o adjoint
973      - a fix for PmEpR when #undef EXACT_CONSERV
974      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
975      - try to fix "hidden" recomp. in forward_step for NLFS
976        (NLFS seems broken sometimes after I checked it in)
977    o seaice:
978     - add c-grid version of the dynamic solver:
979       + three new routines that are the c-grid substitute lsr, dynsolver
980         and ostres
981       + put a few fields that were local to dynsolver into global common
982         blocks, so that I can move the computation of stresses etc into
983         seaice_lsr (saves coding but may break the adjoint).
984     - replace more hardwired parameters by runtime parameters
985     - add ice masks that mask the rhs of the implicit solvers where there
986       is no ice (commented out in seaice_dynsolver, because i am not sure
987       if this works properly), eventually this should replace the clipping
988       of ice velocities in seaice_dynsolver to +/-40cm/s.
989    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
990      include it only where its needed
991    o move balancing of fluxes before the call of external_forcing_surf
992    o seaice:
993      - correct units of turning angles (now they are really in degrees)
994      - move computation of GWATX/Y out of main routine into dynsolver
995      - initialize GWATX/Y in seaice_init
996    o Apply mask on Fresh-Water flux (needed for SSH forcing).
997      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
998    o seaice: add runtime flags for turning angles (default to zero)
999    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
1000      and trend from exf forcing and ctrl control adjustments
1001    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
1002      (since checkpoint57x_post)
1003    o change the default rotation period to 86164.s = the Earth rotation
1004    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
1005      and based on a reference stratification. Tested within hs94.cs-32x32x5.
1006    o seaice advection: add code for choosing between the default (2nd order
1007      central differences) and multiDim advection schemes provided by
1008      pkg/generic_advdiff
1009    o seaice:
1010      - removed all references to SEAICE_GRID.h fields from
1011        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
1012        (cubed-sphere configuration will change a little)
1013      - grid computations in seaice_init are obsolete now.
1014      - cleaned up code a little so that is easier to read (hopefully).
1015      - added new (better?) discretizations of default advection and diffusion
1016        (turn on with SEAICEuseFluxForm)
1017      - replace 1 in 3d global fields by kSurface in growth.F
1018      
1019    checkpoint58a_post
1020    o seaice:
1021      - bug fix in advect.F
1022    o shelfice:
1023      - separate shelfice load anomaly from pload (breaks with time
1024        dependent forcing), => introduce constant field shelficeLoadAnomaly.
1025        Its default is 0., but it may be computed more cleverly from (unknown)
1026        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
1027        done offline. A good approximation of the pressure load anomaly is
1028        necessary to avoid large initial adjustment processes underneath
1029        deep-reaching shelfice.
1030      - small fix in ISOMIP shelfice_thermodynamics
1031      - add more sophisticated thermodynamics of Hellmer (1989), this is
1032        now the default
1033      - give a few constants more intuitive names
1034    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
1035      if bulk formulae are used in long integration (especially EmPmR). Turn
1036      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
1037      if balancePrintMean, the imbalance that is substracted is printed to
1038      STDOUT.
1039    o fix bug (typo) in obcs_apply_eta.F
1040    o add a new package shelfice which enables us to model the circulation
1041      underneath shelf-ice with draughts of hundreds of meters.
1042     - works
1043     - to do: + include improved thermodynamics
1044              + check whether kSurfC (from model/inc/SURFACE.h) can be used
1045                instead of new field kTopC
1046              + can we use topoFile, Ro_surf and existing code in ini_depth.F
1047                instead of new field R_shelfIce and new code in ini_depth.F
1048                and ini_mask_etc.F?
1049              + adjust vertical mixing schemes?
1050    o seaice pkg:
1051     - add a cpp-flag to include a simple formula for a salinity dependent
1052       freezing point of sea water at the surface
1053     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
1054       meridional stresses are now different (and hopefully correct)
1055    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
1056       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
1057       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
1058    o pkg/diagnostics: add options and parameters for regional-statistics
1059       diagnostics ; define regions by reading a region-mask from a file
1060       (might add other options later)
1061    o pkg/bulk_force:
1062     - add option and parameters to use AIM surface-flux formulae.
1063     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
1064       others forcing fields (defined in PARM05, parameter file "data") are loaded
1065       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
1066     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
1067     - use the right EXCH call for uwind,vwind (to work on CS-grid).
1068     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
1069       and parameters (note: calcWindStress replaces .NOT.readwindstress).
1070     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
1071    
1072    checkpoint58
1073    o add "--embed-source" option to genmake2 which, when the supporting
1074      tools can be compiled (as determined by genmake2) will turn on the
1075      embed_files package which then embeds the entire MITgcm source code
1076      (*.[fFhc] + Makefile) used for the build within the executable
1077      - requested by CNH but off by default
1078      - adds a paltry <9MB to the mitgcmuv executable in most cases
1079      - only writes the output when useEMBEDSRC in eedata is true
1080    o clean up 3-dim. relaxation codes:
1081      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
1082      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
1083      * Thanks to Tom Haine for testing!
1084    
1085    checkpoint57z_post
1086    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
1087      affects output (@ truncation level) of exp. plume_on_slope ; updated.
1088    o fix the pickup behavior for obcs in combination with ptracers
1089    o fix a bug in ptracers_external_fields_load
1090    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
1091      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
1092    o transfered surface NH pressure to eta field (if exactConserv).
1093    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
1094         and update lab_sea output.txt file.
1095    o completing 3-dim. relaxation code: additional term
1096         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
1097      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
1098      * At compile time, in "EXF_OPTIONS.h" set
1099          #define  ALLOW_CLIMTEMP_RELAXATION
1100          #define  ALLOW_CLIMSALT_RELAXATION
1101      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
1102          tauThetaClimRelax3Dim = 15552000.0,
1103          tauSaltClimRelax3Dim  = 15552000.0,
1104      * 3 cases:
1105          1) Use a constant-in-time 3-dim. field
1106          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
1107          3) Real-time relax. to time-evolving prescribed field
1108    o Adding Laplacian-type smoothness constraint on
1109      initial and boundary (forcing) controls (ic, bc)
1110      * enable at compile-time via
1111        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
1112      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
1113      * Absolute scale somewhat unclear so far
1114      * no area weighting was included since no other cost term does so far
1115    
1116    checkpoint57y_post
1117    First step for a NLFS adjoint
1118    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
1119    o new init. routines for calc_r_star, calc_surf_dr
1120    o still need to deal with ini_masks_etc
1121    o testreport seemed happy
1122    checkpoint57y_pre
1123    
1124    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
1125    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
1126    o add new offset feature to offline pkg (plus minor cleanup)
1127    o cfc fixes for final year of integration
1128    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
1129      be in GCHEM_OPTIONS).
1130    
1131    checkpoint57x_post
1132    o fix testreport Pb in multiple test experiment.
1133    o cleanup our namelist syntax in verification:
1134      - make it more F95 standards compliant (some work still needed)
1135      - allows the vast majority of our tests to work with gfortran
1136    o Non-Hydrostatic:
1137     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
1138     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
1139    o Allow to apply AB on T,S rather than on AB(gT,gS):
1140     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
1141     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
1142       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
1143     - need a "clever" read_pickup to restart from the other AB formulation
1144    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
1145    o remove some unused variables (reduces number of compiler warnings)
1146    o adjoint
1147      * Disable useVariableViscosity for adjoint for time being
1148        (there are a number of extensive recomputations)
1149      * Initialize certain variables needed for adjoint
1150    
1151    checkpoint57w_post
1152    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
1153                 fix the singleCpuIO RS version of MDSWRITEFIELD
1154       and add a WARNING if using globalFiles=T with multi-processors.
1155    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
1156      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
1157    o tracer advection scheme:
1158      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
1159       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
1160       was not very convenient).
1161      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
1162       (further tests needed for the implicit DST & Flux-Limiter schemes).
1163    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
1164      and sRef for convenience, handy, when you want to initialize
1165      ptracers in a large domain with a constant non-zero value. Also,
1166      untangle ptracers_init.F a little.
1167    
1168    checkpoint57v_post
1169    o change dome exp. to use variable viscosity in side-drag terms.
1170    o remove all the files from the cfc_offline test since they are now
1171      incorporated into tutorial_cfc_offline which has been producing
1172      identical results for a few days of testing
1173    o add new parameter: sideDragFactor to enable half-slip-side BC
1174      and change side-drag S/R to use viscosity from mom_calc_visc
1175      (can switch back by setting sideDragFactor=0.); affects results at
1176      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
1177       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
1178    o vorticity & strain are now computed without masking, to account for
1179      no-slip-side BC in variable viscosity calculation ; mask is applied
1180      anyway later on, before computing advection/coriolis terms.
1181    o modify exp4 to test new obcs support for reading from external files
1182      and for passive tracers
1183    o fix behavior of ptracers_monitor when monitor output is written to a
1184      netcdf-file; still not independent of monitor.F (writes in the same
1185      file).
1186    o change default value of tRef (put a uniform, meaningful value for ocean
1187      & atmos) and initialize sRef (was missing, as Martin mentioned).
1188    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
1189      to be proportional to enstrophy dissipation length.  Thus,
1190       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
1191      This is now consistent with Smagorinsky and with the manual.
1192    
1193    checkpoint57u_post
1194    o OBCS and PTRACERS: add open boundary support for passive tracers
1195      - either use homogenous (pseudo) v.Neumann conditions or prescribe
1196        OB-values from file; this is not different from the way theta and salinity
1197        are treated
1198      - however, Orlanski-radiation conditions are not supported, and the model
1199        will stop if you use pTracers and Orlanski at the same time.
1200      - beefed up the rountine obcs_external_fields_load: now only those open
1201        boundary values are overwritten with values from files for which there
1202        are really files, otherwise the OB-fields remain untouched. This makes
1203        it possible to use different OBs at different ends of the domain (as
1204        with EXF)
1205    o reduce number of exch calls in shap_filt (s2).
1206    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
1207      truncation level) 4/5 MLAdjust test results (11&12 digits match).
1208    
1209    checkpoint57t_post
1210    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
1211    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
1212      same truncation, independent of the face number: affects affects several
1213      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
1214    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
1215      note that biharmonic viscosity + no-slip was not tested in any experiment.
1216    o fix bug in non-linear free-surf side-drag ; generate new output for
1217      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
1218    o make mnc honor the writeBinaryPrec flag for most kinds of output
1219    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
1220    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
1221      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
1222    o add brackets in multi-terms sum to get same truncation, independent of
1223      the face number (manage to get exactly same value of gU,gV at the cs-edge)
1224      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
1225    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
1226      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
1227      a maximum grid-scale Reynolds number.  Also, changes all length calculations
1228      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
1229      Suggested values of viscosity parameters found in mom_calc_visc.
1230      Many new viscosity diagnostics available.
1231    
1232    checkpoint57s_post
1233    o Add clearing-house for viscosity calculations, mom_calc_visc and
1234      correct numerous bugs in LeithD and Smagorinsky discretizations.  
1235      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
1236      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
1237      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
1238      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
1239      The Strain-Tension form is now called with useStrainTensonVisc=.true.
1240      ViscAhStrain and viscAhTension are now retired.
1241    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
1242    o In response to JMC's bug report, genmake2 now ignores any soft-links
1243      that it finds in the *current* directory when searching for files.
1244      Soft-links found in any other source directories will still work as
1245      they did before.
1246    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
1247      a C routine to unlimit the stack size
1248    o mnc-ify pkg/aim snapshot vars
1249    o mnc-ify pkg/land as requested by Daniel
1250    o various changes to mnc including:
1251      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
1252      - output can now be grouped so that all files within a group
1253          change the ITER portion of their names in lock-step together
1254      - can now read ("global") PER-FACE (in addition to PER-TILE) files
1255          and works with both EXCH1 and EXCH2 (but needs more testing)
1256      - writing works for all verification test cases w/ g77 on Linux
1257    
1258    checkpoint57r_post
1259    o make MNC variable initialization happen earlier
1260    o add diagnostics for (almost) each term of the momentum Eq.
1261    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
1262    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
1263    o remove MINIMAL_TAVE_OUTPUT option ;
1264      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
1265    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
1266      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
1267    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
1268    o add time-dependent SST, SSS control
1269    o cost terms in ecco/ modularized (new cost_generic.F)
1270    o cost_averages routines are modularized (new cost_averagesgeneric.F)
1271    o new infrastructure for seaice model vs. obs misfits in seaice/
1272      * driver from the_main_loop.F is seaice_cost_driver.F
1273      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
1274      * gradient check in Exp. 6a of natl_box_adjoint/
1275    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
1276      (see README file)
1277    
1278    checkpoint57q_post
1279    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
1280    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
1281      - bug was reported by Jean-Michel and Ian Fenty
1282    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
1283      update exp. cpl_aim+ocn output.
1284    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
1285      Needed for high-res. runs with large global files
1286      to be able to limit tapelev size
1287    o Changed some tests for adjoint:
1288      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
1289      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
1290      * global_ocean.90x40x15/ back to default 3-level checkpointing
1291    o Modifications to enable scripted COMMON to MODULE conversion
1292      * verification/OpenAD/code/ has necessary scripts and description;
1293      * converts, compiles and runs successfully;
1294    
1295    checkpoint57p_post
1296    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
1297    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
1298      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
1299    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
1300    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
1301      (was already the case for dissipation with mom_vecinv,
1302       and also the case for grad.PhiHyd when staggered-timeStep)
1303      This will allow to put dissipation out-off the AB time-stepping.
1304     Unfortunately, affects truncation error. Update output of exp. that "fails"
1305      (cg2d matching number) and leave the others for later: front_relax(10),
1306      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
1307      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
1308    
1309    checkpoint57o_post
1310    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
1311      (2) its ready to be documented during the 20050801 DocFest
1312    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
1313      for ideal_2D_oce and lab_sea on linux_ia32_g77
1314    o set to #undef CTRL_SET_OLD_MAXCVARS_30
1315      in global1x1_tot/code_seaice_adj to access indices 32, 33
1316      (worth another tag)
1317    
1318    checkpoint57n_post
1319    o adding precip control xx_precip 32
1320    o adding swflux control xx_swflux 33
1321    o Replacing 10 forcing penalty cost routines by 1 generic.
1322    o Implementing partitioning in time-mean and variable adjustment
1323      for atmos. state.
1324    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
1325    o in natl_box_adjoint:
1326      * updated exp 1 to 10
1327        (but does not have time-mean vs. variable split results yet)
1328    o updated global1x1/*_seaice_adj/
1329      to incorporate latest changes
1330    o enable useSingleCpuIO for mdsio vector routines
1331      (applies in particular to tapelev I/O)
1332    o removed inefficient K-loop in all active_file*control*.F
1333    
1334    checkpoint57m_post
1335    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
1336      and advect_cs (use EXCH-2 and standard cs-32 grid files).
1337    o pkg/exch2: filling of face-corner halo regions is optional
1338      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
1339    
1340    checkpoint57l_post
1341     tag before updating tutorials (pre-release-2)
1342    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
1343       for output and interpolation of input fields onto model grid)
1344    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
1345       Affects results of exp. rotating_tank ; update output.txt.
1346    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
1347          and taking the square quantity and/or using a fraction-weight field.
1348    o fix aim_diagnostics_init.F mate numbers.
1349    o add mnc output capability to diagnostics/diagstat and update
1350      our cvsignore files for the ACSII output generated
1351    
1352    checkpoint57k_post
1353    o lab_sea now uses diagnostics package and provides a suite of
1354      new EXF diagnostics output.
1355    
1356    checkpoint57j_post
1357    o exf
1358      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
1359        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
1360        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
1361      * extended diagnostics output
1362        - now includes all EXF variables
1363        - hs, hl moved to common block
1364        - separate S/R for diagnostics, called after ctrl vector is added
1365        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
1366        - EXFqnet contains true Qnet (i.e. includes qsw)
1367      * updated verif. lab_sea, global_with_exf
1368      * Rearranging hflux (exf_mapfields -> exf_getforcing)
1369        to ensure that diagnostics sees a true EXFqnet
1370    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
1371    o diagnostics pkg: change pointers so that 1 diagnostic can be used
1372      several times with different frequencies.
1373    o mnc-ify the thsice package as requested by Daniel Enderton
1374      - the monitor--MNC output needs work
1375      - many attributes need to be added (most are currently blank)
1376    o mnc-ify theaim_v23 package as requested by Daniel Enderton
1377      - many attributes need to be added (most are currently blank)
1378    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
1379    o add Sadourny like discretization to the 4th.O vorticity advection scheme
1380    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
1381      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
1382         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
1383    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
1384     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
1385    
1386    checkpoint57i_post
1387    o Diagnostics package was changed: diagnostic allocation is now deactivated
1388      by setting an empty file name in the namelist (used to be by setting 0 frequency)
1389    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
1390      add 1rst Order upwind vertical Shear.
1391    o add a quick fix for A/B checkpointing in OFFLINE mode
1392    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
1393      end-run around the C/Fortran linking horror in eesup/src/timers.F
1394    o added pkg/runclock: allows user to terminate run based on wall clock
1395    o added non-hydrostatic scaling parameter: nh_am2
1396    o pkg/my82: futile attempt to make results compiler-independent by adding
1397      some "_d 0", etc. no effect.
1398    o for mnc output, fill the 'T' coordinate var with myTime and create a
1399      separate 'iter' variable for iteration count
1400    o pkg/diagnostics:
1401      add new capability: output of Global/Regional & per-level statistics ;
1402      tested against monitor output (including land & thSIce) on various exp.
1403    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
1404    
1405    checkpoint57h_done
1406      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
1407      data.diagnostics, data.gchem, data.ptracers) is done.
1408    
1409    o pkg/diagnostics: prepare for Global/Regional statistics.
1410      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
1411    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
1412      and rename it: DIFFERENT_MULTIPLE
1413    
1414    checkpoint57h_post
1415    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
1416    o pkg/diagnostics: change output frequency, now in seconds (instead
1417      of Nb of iterations). This requires to change data.diagnostics.
1418    checkpoint57h_pre
1419    
1420    o in mnc, let the user create the output dir if both mnc_outdir_date
1421      and mnc_outdir_num are false
1422    o add fflags() to pkg/diagnostics which allows one to specify, on a
1423      per-file basis, the file precision [default behavior is unchanged]
1424    o added diagnostics to pkg/kpp, including computation of mixed layer
1425      depth based on a temperature/density criterion
1426    o updated verification/natl_box to test the new pkg/kpp diagnostics
1427    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
1428    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
1429    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
1430      not mnc -- this mistake was found by JMC and is now corrected
1431    
1432    checkpoint57g_post
1433    o add Adams-Bashforth 3rd Order time stepping:
1434      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
1435      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
1436    checkpoint57g_pre
1437    
1438    o make lambda[Theta,Salt]ClimRelax spatially varying
1439      (default remains spatially uniform constant based on tau)
1440    o added new control variables
1441      * init. uVel, vVel, etanN
1442      * lambda[Theta,Salt]ClimRelax
1443    o separate masks used for ctrl_pack/unpack 'from write_grid' output
1444      (suggested by G. Forget)
1445    
1446    checkpoint57f_post
1447    o add parameter "baseTime" = model base time = time at iteration zero
1448      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
1449      account for baseTime shift
1450    o move Coriolis arrays from PARAMS.h to GRID.h
1451    checkpoint57f_pre
1452    
1453    o mnc-ifying the seaice package
1454    o introduced an alternative length scale calculation for use in the limiting
1455      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
1456    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
1457    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
1458      as well as grad(vort3).  Made it compatible with both approximate form
1459      for the cubed sphere and full form of these gradients.  Added flag
1460      useFullLeith to select between approximate and full form.  
1461    o add "d0" in getcon.F to reduce differences between compilers/platforms
1462      update output.txt of exp. fizhi-gridalt-hs
1463    o change port_rand funtion to allow to set the seed.
1464    o fix obscure MNC bug involving conversion between reals and integers
1465      - it caused no problems with certain (eg. gcc, ifc) compilers but the
1466        new version is now more standards-compliant
1467    o adjoint-related modifications
1468      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
1469      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
1470      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
1471    
1472    checkpoint57e_post
1473    o Adding eddy stress controls a la Ferreira et al.
1474    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
1475    
1476    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
1477      update output.txt of exp. fizhi-gridalt-hs
1478    o add more "Z" dimensions and associated coordinate vars to MNC
1479    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
1480    o parameter calendarDumps: when set, approximate months (30-31 days) and years
1481      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
1482      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
1483      months and years.  Requires pkg/cal.
1484    o diagnostics: add pickup functionality
1485      - off by default for backwards compatibility
1486      - current version only uses MDSIO -- MNC will be added
1487    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
1488    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
1489    
1490    checkpoint57d_post
1491    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
1492    o modify verification/ideal_2D_oce so that it tests the creation of mnc
1493      output from the diagnostics package
1494    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
1495    o make genmake2 more portable by using ".$FS" instead of ".f" for more
1496      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
1497    o add coordinate variables to the MNC output from the diagnostics package
1498    o change MNC-flags default value: true when useMNC=TRUE
1499    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
1500      the ability (off by default) to read the grid information using MNC
1501    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
1502    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
1503    o do snap-shot diagnostics at the middle of the time-interval (instead of
1504      at the end).
1505    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
1506      new test for AIM with thSIce + slab-ocean
1507    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
1508    o move state variable diagnostics to the beginning of the time step ;
1509      (note: still needs some work specially for snap-shot diagnostics)
1510      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
1511    
1512    checkpoint57c_post
1513    o Change testing option (-ieee) to get closer agreement between g77 & ifort
1514    o generate new output.txt files on faulks with g77 & the new -ieee option
1515    checkpoint57c_pre
1516    
1517    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
1518      update output.txt of exp. global_ocean.90x40x15
1519    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
1520      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
1521    o add saltFlux(+File) forcing capability with periodicExternalForcing
1522    o allow to use pkg diagnostics for GM-Redi & ThSIce output
1523    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
1524    o improvements for the MNC output from DIAGNOSTICS:
1525      - correct handling of the unlimitied dimension
1526      - all dims now have associated coordinate variables
1527      - variables located at U, V, and Corner ("Z") points are now written
1528        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
1529        *all* data points are output
1530    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
1531    o added pkg/seaice/seaice_monitor.F
1532    o mdsio_readfield.F can now read files visible only to master MPI process.
1533    o pkg/seaice: some test code for ice-modified ocean stress
1534    o exf_getffields interpolation defaults to bilinear for all scalar forcing
1535      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
1536      spurious negative numbers for precipitation and humidity.  Will cause
1537      some small numerical differences for integrations using pkg/exf/exf_interp.F.
1538    o pkg/ctrl/
1539      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
1540        May be enabled via doPackDiag
1541      *  introduce z-scaling of
1542         + gradient (doZscalePack) and
1543         + control (doZscaleUnpack)
1544    o pkg/mdsio/
1545      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
1546      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
1547    
1548    checkpoint57b_post
1549    o simplify options in diagnostics_fill arguments (remove weird combinations)
1550    o fix MNC coordinate variables so that they now contain per-face index
1551      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
1552      general, EXCH2 grids are only aligned to a "local" coordinate system
1553    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
1554    o Implement instantaneous output within pkg diagnostics:
1555      setting a negative frequency in data.diagnostics produces
1556     "snap-shot" output (as opposed to time-average if freq > 0)
1557    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
1558      NOTE: change ptracer diagnostics name: use 2 characters to work with
1559            more than 9 tracers. Add also diagnostics of advect & diffus flux.
1560    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
1561      becomes the coordinate variable for the 'T' dimension
1562    o add CF-style coordinate variables to MNC
1563      - just a first cut:  numbers are meaningless on the cubesphere and
1564        missing along the T axis but otherwise it works!
1565    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
1566    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
1567    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
1568      this is based directly on what the model compute, so that the content of
1569      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
1570    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
1571    o clean up build options files for SunOS, in particular
1572      - remove -traditional from xmakedepend
1573      - change -xarch=v9 to -xarch=native for f77
1574      - restore use of make (not gmake)
1575      - add CC=gcc if using g77
1576    o changes per discussion of AM, JMC, & EH3 today:
1577      - move redundant "grid" variables out of "state" -- in preparation of
1578        creating proper CF-style coordinate variables and in recognition
1579        that any/all grid variables can be easily copied (eg. w/NCO) from
1580        the grid files into any of the other NetCDF files
1581      - *always* output grid variables with MDSIO (this will eventually be
1582        changed)
1583      - output MNC grid file if useMNC is true
1584    o every instance of _END_MASTER() has been found and replaced with
1585      _END_MASTER( myThid ) in order to satisfy certain picky Sun
1586      preprocessors
1587    o re-arrange diagnostics pkg initialisation:
1588     - allow each package to extend the available diagnostics list
1589     - add some checking and fix small problems (multi-threaded, ...)
1590     - new S/R diagnostics_fill (replace fill_diagnostics):
1591       look through the short list of active diag. (instead of the long list)
1592       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
1593    
1594    checkpoint57a_post
1595    o this set of changes restores TAMC compatibility
1596      tested for global_ocean.90x40x15 adjoint on trough
1597      (what a pain)
1598    
1599    checkpoint57a_pre
1600    o some modifs in tools/build_options for sunos
1601    o call ctrl_pack for ctrl at end for optimcycle=0
1602    
1603    checkpoint57
1604    o add horizontal bi-harmonic viscosity for vertical velocity
1605      - new parameter viscA4W (defaults to viscA4)
1606      - affects only non-hydrostatic code
1607      - to be done: no-slip lateral boundary conditions
1608    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
1609    o implement Implicit Vertical advection for pTracers
1610    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
1611      (implemented also for implicit vertical diffusion & advection)
1612    o OBCS: extend application of tracer open boundary conditions
1613      to a strip beyond the boundary of width Olx/Oly
1614    o add call monitor to TAF set of required calls (flow directives)
1615      and include in natl_box_adjoint
1616    o untangle a few ifdefs related to cost, ctrl, autodiff
1617      untangel a few ALLOW_ECCO_OPTIMIZATION
1618    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
1619      (theta2, salt2 in ecco_cost_weights)
1620    
1621    checkpoint56c_post
1622    o OBCS as control variables
1623      - update ctrl_ad_diff.list, obcs_ad_diff.list
1624      - remove balance of obcs controls from default
1625      - fix index bug nobcs in ctrl_init
1626      - fix dummy fields filen in ctrl_pack
1627      - add dummy weights for obcs
1628    o lsopt: comment out fort.94 output
1629    o optim:
1630      - remove unnecessary header files
1631      - adjusted namelists
1632      - add xerbla.F to Makefile
1633    o exf:
1634      - multiple modifications of exf_check_range
1635      - unit change in exf_init_runoff from [m/year] to [m/s]
1636    o mdsio:
1637      - i/o-vector change debugLevel from debLevA to debLevB
1638    
1639    checkpoint56b_post
1640    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
1641      is called from DO_THE_MODEL_IO
1642      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
1643      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
1644      - clean up PTRACERS_WRITE_TIMEAVE a little
1645    o add another verification experiment that tests both the cfc-pkg and
1646      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
1647      reactive tendencies treated inline with regular timestepping
1648    o testreport previously did a lousy job of comparing small numbers, so
1649      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
1650      implemented in the little c-progam tmp_cmpnum.c which is embedded in
1651      testreport.
1652    o ptracers_monitor: bug fix for MPI
1653    
1654    checkpoint56a_post
1655    o GCHEM: finish reorganizating the package
1656      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
1657        (introduces another 3D-array for each passive tracer, but only if
1658        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
1659        gchemTendency is not needed because the timestep is done separately)
1660      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
1661      - GCHEM is now---more or less cleanly---separate from PTRACERS
1662      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
1663        so clear to me how that should be done in a general way.
1664    o CFC: improve formatting of output in CFC_ATMOS
1665    o PTRACERS:
1666      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
1667        that ALL experiments with ptracers enable can be checked. This makes
1668        GCHEM_MONITOR obsolete.
1669      - include a runtime parameter PTRACERS_monitorFreq that defaults to
1670        monitorFreq
1671      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
1672    o add PTRACERS (PTR0[1-5]) to testreport output
1673    o exf_check_range:
1674      * default changed to .TRUE.
1675      * will check values for niter0 if debLevA, every timestep if debLevB
1676      * STOP in exf_check_range if 'out of range'
1677      * range chosen generous to allow for potential extema
1678      TBD: a version with stricter range
1679           permitted range would be runtime parameters
1680    o GMredi:
1681      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
1682      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
1683      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
1684    o GCHEM:
1685      - move call to GCHEM_FORCING_SEP, so that it is now called before
1686        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
1687      - introduced a useGCHEM runtime flag and applied it everywhere.
1688      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
1689        this flag is now only visible within GCHEM-pkg routines.
1690      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
1691        be replaced by a 3D array that is computed before thermodynamics; for
1692        this, the tracer ID iTracer had to be included into the parameter list
1693        of ptracers_forcing
1694      - set up forward_step to call gchem_forcing, that will replace
1695        gchem_forcing_int in ptracers_forcing
1696      - cleaning up
1697    o small cleaning of exch2: remove files that are also in eesupp/src
1698    
1699    checkpoint56
1700    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
1701    o mnc: cleanup "full" files--fixes out-of-memory problem
1702    o ECCO-GODAE
1703      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
1704      * fully merged and updated from SIO code
1705        windstress sign change affects
1706        - exf_inscal_[u/v]stress
1707        - sign of xx_tau[u/v] adjustments
1708        - signs in cost_scat
1709      * ctrl_get_gen: avoid update of tau[u/v] for first few days
1710      * natl_box_adjoint updated and compressed
1711      * 2-level checkpoint switch added
1712        (tested in EXP. 1 of natl_box_adjoint)
1713      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
1714    o SVD
1715      * first complete, non-hacked version for SVD calculations
1716      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
1717        performed via direct access files admtlm_vector.it????
1718        (via ctrl_[un]pack)
1719      * optimcycle is used for ARPACK iteration counter
1720        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
1721      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
1722        and add linear transforms where necessary
1723      * controls are initial/final SST, SSS (can be extended; need to check
1724        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
1725    o mdsio: filename info to both stderr, stdout
1726    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
1727      from sign change
1728    
1729    checkpoint55j_post
1730    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
1731      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1732    o add consistent build directories and .cvsignore files to verification
1733    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
1734    o make all subroutines 30 or less characters in length for certain older
1735      compilers to work (a thorough search only turns up two routines in
1736      pkg/ptracers)
1737    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
1738      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1739    
1740    checkpoint55i_post
1741    o change arrays for total vertical diffusivity (2.D if explicit,
1742      3.D if implicit) ; each ptracer uses its own background value.
1743    o added mnc/NetCDF output capability to ocn_compon_interf
1744      - added bits to verification/cpl_aim+ocn so that it can run on
1745        ITRDA and other clusters without the mpirun "-wd" option
1746    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
1747      configuration
1748    o give MNC the ability to create additional files rather than
1749      exceeding a specified file size limit "MNC_MAX_FILESIZE"
1750      - the default is just less than 2GB which is a practical limit
1751        on many systems
1752    o Compute the non-local term using either KPP vertical diffusivity (=default)
1753       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
1754    
1755    checkpoint55h_post
1756    o add verification test "vermix"
1757    o remove all the *_ioinc flags and replace with the single global
1758      outputTypesInclusive flag
1759    o allow to set a vertical profile of vertical diffusivity for T & S
1760    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
1761    o useMNC moved from data.mnc to data.pkg
1762    
1763    checkpoint55g_post
1764    o Renaming carbon AD experiments to comply with testreport conventions
1765    o Updating adjoint of Held-Suarez hs94.1x64x5
1766    o Fixing directives for non-ECCO forward_step, after ECCO directives
1767      have been fixed to avoid recomp. of do_oceanic_phys
1768      Works well for global_ocean.90x40x15,
1769      but recomp. issue remains for carbon
1770    o Updating adjoint output for natl_box_adjoint after
1771      pkg/ecco has been modified (see taga c55d_post)
1772    
1773    checkpoint55f_post
1774    o rename to timeave_init_fixed
1775    
1776    checkpoint55e_post
1777    o some delicate re-shuffle of store directives to avoid one
1778      extra call of do_oceanic_physics
1779      affects ecco_the_main_loop.F, do_oceanic_physics.F
1780      checkpoint_lev1_directives.h
1781    o NB: this may break global_ocean adjoint temporarily,
1782      but it is clear how to fix it. Will do later, need this now.
1783    
1784    checkpoint55d_post
1785    o ECCO specific cost function terms (up-to-date with 1x1 runs)
1786    o ecco_cost_weights is modified to 1x1 runs
1787    o modifs to allow observations to be read in as
1788      single file or yearly files
1789    o enable to read exf forcing fields as either
1790      single file or yearly files (flag useExfYearlyFields)
1791    checkpoint55d_pre
1792    
1793    o switch between 2-level and 3-level checkpointing
1794    o add ability of MNC to write local and "partial" (eg. 2D slices where
1795      the full 3D field is never actually stored) arrays to NetCDF files
1796      with the correct (that is, the complete multi-dimensional) set of
1797      array indicies
1798      - used in mom_vecinv() to write the diagFreq output
1799      - tested (demonstrated) in verification/aim.5l_cs
1800    o further mnc-ification
1801      - add verification/lab_sea to the list with mnc setups
1802      - fix undefined mnc v-names in cd_code
1803      - add kpp to mnc output (both snapshot and timeave)
1804    o non-hydrostatic code
1805      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
1806        in calc_gw.F
1807      - defaults to viscAh
1808      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
1809        friction or Leith) in non-hydrostatic mode, as long as there is
1810        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
1811    o pkg/cost
1812      extend simple cost functions to treat time mean quantities
1813      (T,U,V) via cost_accumulate_state from cost_tile
1814    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
1815        be 2 times larger than the minimum size the advection scheme requires.
1816        now get a perfect conservation of salt in advect_cs test-exp (updated)
1817    o GGL90 (Gaspar's TKE mixed layer)
1818      - add horizontal diffusion of TKE, requires exchanges in
1819        do_fields_blocking_exchanges, horizontal diffusivity is zero by
1820        default. In OPA there is no horizontal diffusion of TKE but the
1821        mixing coefficients are computed from a horizontal average of TKE of
1822        6 points or so. I think that diffusion has a little more physical
1823        justification.
1824      - clean up ggl90_calc in the hope of reducing memory usage (this hope
1825        was in vain)
1826      - mask tke-variable in ggl90_init
1827    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
1828    o fix biharmonic diffusion on CS-grid.
1829    o more obcs stuff
1830      - added obcs_external_fields_load as an alternative to the EXF-pkg option
1831        for reading boundary values. This routine is called from
1832        obcs_prescribe_read
1833      - updated obcs_check
1834      - changed sponge layer relaxation parameter units for days to seconds
1835      - turned off sponge layer by default
1836      - changed argument list of OBCS_CALC to myTime+deltaTclock
1837      - fixed about 35 bugs in obcs_external_fields_load
1838    
1839    checkpoint55c_post
1840    o obcs stuff
1841      - new runtime flags useOBCSprescribe, useOBCSbalance
1842      - re-arranged obcs_calc
1843      - moved exf_getobcs to obcs_prescibe_read
1844        obcs_prescibe_read is called after ORLANSKI stuff
1845        and independent of it (executable can contain all).
1846      - updated obcs_check
1847      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
1848        These may be necessary only if tangential velocities are
1849        prescribed at OB, not sure, needs testing.
1850    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
1851      which simplifies the calls and passes the ifc check-bounds test
1852    
1853    checkpoint55b_post
1854    o add a 2D scalar, Z location, exchange_2 routine.
1855    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
1856      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
1857      affects advect_cs results (for the wrong reason): update output.txt
1858    o use a more standard discretization for biharmonic viscosity ;
1859     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
1860      affects results of dome set-up: update output.txt
1861    o fix gad_advection.F (CubedSphere part), back to version 1.23
1862    o fix bug in mom_vi_del2uv.F (CubedSphere part).
1863    
1864    checkpoint55a_post
1865    o merged code to
1866      * prescribe/read time-dependent open boundaries
1867        (works in conjunction with exf, cal)
1868      * sponge layer code for open boundaries
1869      * each boundary N/S/E/W now has its own CPP option
1870        (healthy for the adjoint)
1871    
1872    checkpoint55
1873    o up-to-date adjoint of previous breaks
1874      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
1875      - global_ocean_ebm: adjoint still needs fix (TLM ok)
1876      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
1877      - carbon: * remove tr1-related adjoint verification
1878                * add ptracer as control variable
1879    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
1880      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
1881    
1882    checkpoint54f_post
1883    o in verification/carbin/ remove experiment related to
1884      ALLOW_PASSIVE_TRACER (array tr1 etc)
1885      code_ad/ input_ad/ results_ad
1886    
1887    o add two new packages
1888      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
1889        + subject to optimization (memory)
1890      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
1891        + subject to reordering (many GOTOs in the original code)
1892        + so far opps is called for every (i,j) point, and then operates in
1893          the vertical; one may want to reorder the scheme in order operate in
1894          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
1895          fields)
1896    o overhaul of IO so that we now have flags for MDSIO and/or MNC
1897      - all verification tests compile and run with linux_ia32_g77
1898      - defaults are compatible with current input files--nothing
1899        should change if you were not previously using MNC
1900      - MNC output has been added in numerous places (eg. timeave)
1901        but there are still a few writes not yet do-able with MNC
1902        (this is in progress)
1903      - flags now allow for either/or/both use of MDSIO and MNC and
1904        documentation will soon follow
1905      - numerous small formatting cleanups for ProTeX
1906    o add version info (via BUILD_INFO.h) to MNC and stdout
1907    
1908    checkpoint54e_post
1909    o add two new packages
1910      - pp81 (Packanowski and Philander, 1981), Richardson number and
1911        stratification dependent mixing
1912      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
1913      - these scheme operate in a similar manner as KPP (without ghat, of
1914        course), however there is only one diffusivity that is used for both
1915        temperature and salinity (and passive tracers)ç
1916    o add offline package
1917    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
1918      provided by Stephanie Dutkiewicz
1919    o genmake2: add ability to search for C compilers and cleanup test output
1920      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
1921    
1922    checkpoint54d_post
1923    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
1924    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
1925      leading to additional shift by 5 days each year of integration
1926       (i.e. leading to considerable offset over the years)
1927    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
1928    o start with no AB and no initial filtering (staggerTimeStep):
1929      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
1930    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
1931      (external loading & cpl import/export stay in forward_step.F)
1932    o update coupling interface to work with new staggerTimeStep
1933    o change MDSIO ptracers_pickup.
1934    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
1935    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
1936    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
1937    
1938    checkpoint54c_post
1939    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
1940      this affects (truncation error) output.txt of test-exp:
1941       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
1942    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
1943    o change Qnet to always be the net heat flux, (+upward).
1944      affects (truncation error) output of natl_box exp.: updated
1945    o define the max number of passive tracers in PTRACERS_SIZE.h
1946    o start to test mnc routinely in exp0
1947    o add sea-ice loading (sIceLoad) as a new forcing field.
1948    
1949    checkpoint54b_post
1950    o add testreport "-j JOBS" option for parallel builds (tested and pretty
1951       impressive on Altix and Opteron systems)
1952    o diagnostics can now write NetCDF files through the mnc package
1953    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
1954    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
1955    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
1956      affects (truncation error) output of lab_sea & natl_box exp.: updated
1957    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
1958    
1959    checkpoint54a_post
1960    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
1961    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
1962    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
1963    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
1964      + internal_wave (shift in writing cg2d_ini_res)
1965    checkpoint54a_pre
1966    
1967    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
1968      - modified verification/lab_sea and natl_box_adjoint accordingly
1969    
1970    checkpoint54
1971    checkpoint53g_post
1972    o prepare splitting of thermodynamics: store convect.counter in common block
1973    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
1974      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
1975    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
1976    o new parameter "nShapS": allow to treat differently S from T (nShapT)
1977    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
1978    o restore adjointability
1979    
1980    checkpoint53f_post
1981    o modifications that affect AIM experiment results (update output.txt):
1982      - no advection of S at top interface Nr (pkg/generic_advdiff)
1983      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
1984    o AIM pkg:
1985      - include stability function into surf.Flux derivative relative to Tsurf
1986      - calculate clear-sky radiation & surface temp. change (for diagnostics)
1987    
1988    checkpoint53e_post
1989    o merged cylindrical coord configuration
1990    o added rotating_tank experiment
1991    checkpoint53e_pre
1992    
1993    checkpoint53d_post
1994    o faulks upgraded: re-generate output.txt that have changed:
1995       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
1996    o Added Bryan and Lewis, 1979, vertical diffusivity profile
1997    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
1998    o added Sadourny discretization of Coriolis
1999      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
2000      - re-enabled use of omega3 (useAbsVorticity)
2001    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
2002      vector-invariant equations
2003      - note: does *NOT* yet use same variable visc. for no-slip BC's.
2004    o recoded the lateral boundary conditions for non-hydrostatic w, this time
2005      hopefully without new bugs
2006      - still to do: biharmonic friction for non-hydrostatic w
2007    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
2008    o regenerated output for global_ocean_ebm (using -ieee)
2009    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
2010      of mom_common/
2011      - simple re-arrangement of instructions within computing loop
2012    checkpoint53d_pre
2013    
2014    checkpoint53c_post
2015    o new version of coupler for AIM+thSIce and Ocean models
2016     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
2017     - land: change Evaporation of snow
2018     - aim with thSIce: fix bug in snow-precip.
2019    o changes to calc_gw.F
2020     - bug fix for w^2 term near the bottom boundary
2021     - (hopefully) improve the lateral slip boundary condtions for use with
2022        partial/looped cells
2023      - because the bug fix changes two verification experiments anyway (exp5
2024        and plume on slope), change the lateral boundary condition from half slip
2025        to the value of no_slip_sides
2026    o ebm package wasnt quite up to the parallel task. Fixed that.
2027    o Adjoint of EBM package + verification
2028      * TLM OK
2029      * ADM not sufficient accuracy yet (needs further testing)
2030    
2031    checkpoint53b_post
2032    o Commiting new energy balance model to repository
2033      * package is pkg/ebm
2034      * verif. is verification/global_ocean_ebm
2035      * references are in ebm_driver.F
2036    C      * X. Wang, P. Stone and J. Marotzke, 1999:
2037    C        Global thermohaline circulation. Part I:
2038    C        Sensitivity to atmospheric moisture transport.
2039    C        J. Climate 12(1), 71-82
2040    C      * X. Wang, P. Stone and J. Marotzke, 1999:
2041    C        Global thermohaline circulation. Part II:
2042    C        Sensitivity with interactive transport.
2043    C        J. Climate 12(1), 83-91
2044    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
2045    C        Destabilization of the thermohaline circulation
2046    C        by atmospheric eddy transports.
2047    C        J. Climate 7(12), 1870-1882
2048    o Will need long integration testing.
2049    checkpoint53b_pre
2050    
2051    o created pkg/mom_common in preparation for variable viscosity code
2052    o renamed and split ini_mnc_io
2053    o pkg/land: only liquid water can diffuse or run-off
2054    o AIM using land: soil wetness availability account for snow
2055    o added printMapIncludesZeros to EEPARMS namelist
2056    
2057    checkpoint53a_post
2058    o restore TAMC compatiility for exf_constants.h
2059      (no usage of _d in .h)
2060    o Additional storing in KPP in an attempt to fix
2061      TAMC problem with adjoint of KPP code.
2062      (no success...)
2063      Identical code works fine with TAF.
2064    o Fixed verification/natl_box_adjoint experiments.
2065      Initial conditions for Experiments 4 and 5 are now
2066      set to "SEAICE_initialHEFF=0", which is more reasonable,
2067      and hence gives results closer to that of Experiment 2.
2068      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
2069    
2070    checkpoint53
2071    o stable checkpoint with up to date adjoint
2072      TLM tests only run for 1st grdchk at the moment. Its unclear if
2073      this is a code problem or a problem with resetting code for g_
2074      variables that is being autogenerated wrong.
2075      Otherwise:
2076       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
2077       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
2078         are both still in chaos following their security messes.
2079    
2080    checkpoint52n_post
2081    o various build (mostly genmake2) changes including:
2082      - ability to build/run more easily within Cygwin and MacOS X
2083      - more complicated Makefiles with a stronger dependence on Gnu Make
2084    o pkg/seaice modifications
2085      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
2086        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
2087        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
2088      - changed proxy for geostrophic velocity and updated
2089        verification/lab_sea/results/* accordingly
2090      - removed ADI dynamic solver from pkg/seaice
2091      - replaced all occurrences of 1/CSTICE or 1/CSUICE
2092        they caused a segmentation fault under certain circumstances
2093      - removed unused field WATR
2094    o bug fix in exf-package:
2095      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
2096         now reflect that.
2097    o small fixes in the cal-package:
2098      - set reference date to first of January for the 'model'-calendar
2099      - failing of cal_CheckDate in cal_FullDate now actually results in a
2100        warning
2101    o small modifications in exf-package to increase flexibility:
2102      - change climtempfreeze from a constant to a runtime parameter that
2103        is specified in data.exf_clim (default = -1.9)
2104      - introduce runtime parameter windstressmax (default = 2.0) that is
2105        specified in data.exf
2106    o fix in pkg/thsice:
2107      - update Evap (Tsf changes) to be consistent with Latent heat flux
2108      - maintain snow precipitation unchanged (even if Tsf >=0).
2109     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
2110    
2111    checkpoint52m_post
2112    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
2113      this does not change any of the results, because myIter=0 in swfrac always
2114      lead to jwtype=2 (the default anyway), but the call makes little sense
2115      as a default
2116    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
2117    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
2118      atmospheric model (AIM) to use it ; add a "slab ocean" component.
2119    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
2120    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
2121    o extending useSingleCpuIO option to work with new exch2 I/O format
2122      - old-style, missing-tile I/O is still accessible by defining CPP
2123        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
2124    o monitor package can write to NetCDF files and/or STDOUT
2125    o fix re-definition bug in MNC_GRID_INIT_ALL()
2126    o doc/api_reference added
2127      - a framework for building an API Reference Manual using all
2128        the "protex" comments embedded in the code
2129      - see pkg/generic_advdiff, pkg/mnc for examples
2130    o MNC:
2131      - make myThid the last argument for all subroutines
2132      - new default for the grid files: NO halos
2133      - add useMNC and other run-time flags
2134      - separate per-file-group handling of the unlimited dimension
2135      - early initialization of MNC w/ flags read at the eeboot stage
2136        and lookup tables set in initialize_fixed
2137      - write all MNC output to a freshly-created directory
2138    o thermodynamics sea-ice (thsice) is now tested with testreport.
2139    o test exp. advect_cs: use the standard cs32 grid ; update output.
2140    o Added functionality to grdchk:
2141      pick global i,j,k position (or nearest wet) where to perform check.
2142    
2143    checkpoint52l_post
2144    o new land formulation:
2145      a) use ground enthalpy as prognostic variable to ensure exact
2146         energy conservation.
2147      b) account for water temperature and for latent heat of freezing
2148         in all processes (rain, run-off, ground storage)
2149      c) compute surface and ground temperature implicitly.
2150    o aim_v23 modification for new land model:
2151      a) Treat separately land / ocean / sea-ice surface fluxes
2152         to allow implicit computation of land & sea-ice surface temp.
2153      b) add snow precipitation.
2154    checkpoint52l_pre
2155    
2156    o fix problem (when 1 tile is empty) in min/max monitor.
2157    o fix bug in timeAve (u,vZetatave in common block)
2158    o no restoring terms under ice for pkg/seaice
2159    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
2160    o bug fix for pkg/seaice pickups
2161    o change MNC call locations and add coordinate attributes
2162    o mask vorticity at the corner ; affects global_ocean.cs output
2163    o fix ini_curvilinear_grid ; test CS experiments with mpi
2164    o aim.5l_cs: modify sea-ice fraction input file ; update output
2165    o exf: Adding simple range check routine for exf fields after read
2166    
2167    checkpoint52k_post
2168    o removed top-level directory "diags"
2169      - we migrated these functions to pkg/timeave a long time ago
2170    o fixed bug introduced in pkg/monitor
2171    o accuracy ctrlprec = 32 insuffient for gradient checks using
2172      averaged fields (I/O via cost_averages)
2173      -> use ctrl.h in active_file*.F to control I/O precision.
2174    o paramter list of CALL ADTHE_MAIN_LOOP
2175    o added initial do_the_model_io to ecco
2176    o set all ...Freq to zero after cost_final
2177      taveFreq, dumpFreq, pChkptFreq
2178    o MAIN and ECCO differentiability restored
2179    
2180    checkpoint52j_post
2181    o fix nchklev in tamc.h for global_ocean...
2182    o Bringing flow and store directives up-to-date
2183    o Really weird thing!
2184      call do_the_model_io from the_main_loop with parameters
2185      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
2186      TAF places a faulty re-call of initialise_varia
2187      after cost_final call which should not be there!
2188    checkpoint52j_pre
2189    
2190    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
2191      error messages
2192    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
2193    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
2194      debug output
2195    o modfied mdsio_writefield.F to handle non-global files under exch2
2196    o update AIM Cubed-Sphere exp (aim.5l_cs):
2197      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
2198    o update AIM Equatorial Channel exp:
2199      use standard aim_v23 pkg and change the SST fields to be more realistic.
2200    o globalFile now works with exch2
2201    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
2202      mon_vort3.F to make exch2 friendly with >1 tile per cube face
2203    o limit timeave output for hi-res integrations
2204    
2205    checkpoint52i_post
2206    o removed CPP_EEOPTIONS.h from verification/*/code
2207    o updated the tiling for global_ocean_pressure
2208    checkpoint52i_pre
2209    
2210    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
2211      the old pkg/aim).
2212    
2213    checkpoint52h_pre
2214    o shortened offending lines in exch2_send_rx?.template
2215    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
2216    o genmake2: add build & execute test for NetCDF code
2217    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
2218      old grid files, moved CPP_EEMACROS.h to pkg/exch2
2219    o added useSingleCPUIO flag to monitor.F and mon_out.F
2220    o added temporary hack for sea-ice dynamics on the cube:
2221      metric terms are ignored and it is assumed that
2222      there is no sea-ice on cube faces 1, 2, 4, and 5.
2223    
2224    checkpoint52f_post
2225    o added exch2 cube routines to pkg/exch2
2226    o modified hs94.cs-32x32x5 to use it
2227    o added new grid files to hs94.cs-32x32x5
2228    checkpoint52f_pre
2229    
2230    checkpoint52e_post
2231    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
2232      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
2233    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
2234      to work with implicit vertical advection and AB ;
2235    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
2236    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
2237     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
2238    checkpoint52e_pre
2239    
2240    o fix bug in impldiff when Nr=1 or Nr=2.
2241    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
2242    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
2243    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
2244      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
2245    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
2246    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
2247    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
2248    
2249    checkpoint52d_post
2250    o re-tiled many expts to allow comparison in multi-processor mode
2251      - updated output accordingly
2252      - changed hs94.128x64x5 to use intial T from file rather than use the
2253        random number generator
2254    o add infrastructure in model routines for fizhi and gridalt packages
2255    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
2256    o changes to permit hi-res, cubed-sphere, configuration
2257      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
2258      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
2259      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
2260        of surface winds for the cube
2261      (A verification experiment, based on global_ocean.cs32x15, but with
2262       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
2263       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
2264       complete with example surface forcing files and matlab scripts to look
2265       at the output and compare it with that of global_ocean.cs32x15.)
2266    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
2267       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
2268       to conform to the common rule.
2269    o check-in the first version of the coupler + interfaces for multi-components
2270       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
2271       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
2272       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
2273       - ocean and atmos. share the same horizontal grid (no interpolation).
2274       - exchanges between component and coupler is done in forward_step
2275    o new verification experiment, cpl_aim+ocn:
2276       coupled ocean - AIM atmosphere on cs32 grid.
2277    
2278    checkpoint52d_pre
2279    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
2280    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
2281    
2282    checkpoint52c_post
2283    o Fixing OPTIONS files for use of exf:
2284      - ALLOW_ECCO not needed
2285      - ECCO_CPPOPTIONS.h should not be included from
2286        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
2287        as has been the case in the past
2288      - All cal/exf related options are currently set in
2289        single header file. Should remain so until we
2290        agree on a consistent new policy.
2291    o Removed all CPP options for cal package.
2292      cal has no more CPP options.
2293    o modified STOREs in GAD_ADVECTION
2294    o corrected key comp. for passkey
2295    
2296    checkpoint52b_post
2297    o new version: "thsice" of thermodynamic sea-ice pkg:
2298     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
2299     - modify fluxes but do not change theta directly;
2300     - light cleaning of bulk_force pkg (still needed with thsice).
2301     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
2302       + output_thsice.txt to test thsice & bulk_force pkgs.
2303    o put back grid & coriolis monitor output.
2304    checkpoint52b_pre
2305    
2306    o call "do_the_model_io" at the beginning (=> dump initial state)
2307    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
2308    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
2309      (need info on NUMBER_OF_PTRACERS)
2310    o missing PTRACERS headers in some routines
2311    o default tamc.h in pkg/autodiff supposed to crash
2312      to ensure proper customization
2313    
2314    checkpoint52a_post
2315    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
2316      - moved surfaceTendencyTice from pkg/seaice to main code
2317      - subroutine FREEZE_SURFACE now limits only surface temperature
2318        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
2319        => new output.txt for global_ocean.cs32x15 & global_with_exf
2320      - keep the old version of FREEZE for backward compatibility;
2321        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
2322      - corresponding modifs for TAF directives
2323    o added surface flux output variables to TIMEAVE_STATVARS
2324    o time-averaged output for pkg/ptracers
2325    o fix problem with ECCO-related divided adjoint
2326      snapshot file was missing some ad-variables,
2327      but no warning issued by TAF
2328    
2329    checkpoint52a_pre
2330    o some bug fixes for #undef REAL4_IS_SLOW
2331    
2332    checkpoint52 = ecco_c52_e35
2333    o after testing adjoints of checkpoint51u_post
2334    
2335    checkpoint51u_post
2336    o this is the post-merge tag of the ecco-branch
2337      (needs another clean checkout and re-testing)
2338    o various natl_box_adjoint configs and results
2339      but no input fields
2340    o obcs adjoint not yet merged!
2341    o adding ECCO global 1x1 and 2x2 degree configs
2342    o updated/extended some store directives for seaice
2343    o pkg/ecco now containes ecco-specific part of cost function
2344    o top level routines the_main_loop, forward_step
2345      supersede those in model/src/
2346      previous input data.cost now in data.ecco
2347      (new namelist ecco_cost_nml)
2348    o in ctrl/ cleaned some cross-dependencies and updated CPP options
2349    
2350    checkpoint51t_post
2351    o this is the pre-merge tag of the ecco-branch
2352    
2353    checkpoint51s_post
2354    o cleanup: removed various obsolete #define-s
2355    o pkg/grdchk
2356      - renamed 'ph-grd 3' to 'grad-res'
2357      - merged from ecco-branch
2358        (remaining bug fixes for obcs gradient checks)
2359      - additional high-precision output for testreport
2360        (grep for 'precision_grdchk_result')
2361    
2362    checkpoint51r_post
2363    o cleaned up or removed CPP_OPTIONS.h files
2364    o updated results for some of the tests to reflect the new
2365      optfiles (-ieee: -O0 instead of -O3)
2366    
2367    checkpoint51q_post
2368    o cd_code:
2369      - moved cd_scheme.F -> cd_code_scheme.F
2370      - separate read_checkpoint from cd_code_ini_vars.F
2371      - separated cd_code part from write_checkpoint
2372      - updated AD_SOURCE, generated .flow
2373      - added CD_CODE_VARS.h to the_main_loop
2374      - Moving cd_code specific store dir.s to pkg/cd_code
2375    o ctrl package totally restructured
2376      - pack/unpack now optional and decoupled from
2377        xx_/adxx_ I/O
2378      - ctrl_pack/unpack cleaned
2379        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
2380      - confined inclusion of AD_CONFIG.h to where necessary.
2381    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
2382    
2383    checkpoint51p_post
2384    o create initial cd_code package
2385      - WARNING: the initialization of fields within packages
2386        is broken because INI_FIELDS (where READ_CHECKPOINT is
2387        called) is called *before* PACKAGES_INIT_VARIABLES.
2388        This seems to be backwards since
2389        1) its important to initially zero the entire field including
2390           the "halo" region
2391        2) zeroing needs to be done *before* reading pickup info
2392           and the pickup call might or might not happen in any
2393           particular run
2394      - this needs an overhaul for R2
2395    o cleanup verification/*/code/GMREDI_OPTIONS.h
2396    o cleanup testreport
2397    
2398    checkpoint51o_post
2399    o bringing AD-related verif's up to date with genmake2
2400      - carbon/
2401      - global_ocean.90x40x15/
2402      - hs.94.1x64x5/
2403      - (front_relax/ )
2404    o (more) consistent directory structure for AD-related verif.'s
2405    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
2406    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
2407    o bug fix in find_alpha.F for MDJWF:
2408      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
2409        change rho -> rho-rhoConst
2410      - replace call find_rho to find_rhonum
2411    o initialisation of rFlx extended to full array (required by TAF)
2412      and shifted to thermodynamics
2413    o removed PTRACERS.h in ptracers routine
2414    o added surfacetendencyPtr to S/R parameter list pracers_forcing
2415    o Correcting initialisations for fVerU, fVerV.
2416    o helping TAF to recognize dependency on kUp for
2417      fVerU, fVerV
2418    o Replacing delZ by delR in pkg/ctrl/
2419    checkpoint51o_pre
2420    
2421    o undid all of cp51 pending some cleanups and discussion
2422    o added the [#include "AD_CONFIG.h"] statement to all files that need
2423       it for adjoint/tl #defines
2424     o re-worked the build logic in genmake2 to support AD_CONFIG.h
2425     o removed tools/genmake since it no longer works
2426    
2427    checkpoint51n_post
2428    o modifications to make FREEZE flux visible to pkg/kpp
2429      - moved surfaceTendencyTice from pkg/seaice to main code
2430      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
2431      - subroutine FREEZE now limits only surface temperature
2432        (this means new output.txt for global_ocean.90x40x15,
2433         global_ocean.cs32x15, and global_with_exf)
2434    o added surface flux output variables to TIMEAVE_STATVARS
2435    
2436    checkpoint51n_pre
2437    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
2438    o added [#include "AD_CONFIG.h"] to all files that use the following
2439      defines:
2440      - ALLOW_ADJOINT_RUN
2441      - ALLOW_TANGENTLINEAR_RUN
2442      - ALLOW_ECCO_OPTIMIZATION
2443    
2444    checkpoint51m_post
2445    o incorporating changes to get TAMC/TAF working in genmake2
2446      - added new TAMC/TAF targets to the Makefile
2447      - various cleanups related to package handling
2448      - these changes should have no impact on the forward model
2449    
2450    checkpoint51l_post
2451    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
2452     - faster algorithm for cal_addtime.F
2453     - higher precision arithmetic, where needed
2454     - pkg/exf *startdate variables changed from calendar date to
2455       model integration time
2456    
2457    checkpoint51l_pre
2458    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
2459    o enable to apply restoring on S & T only in a latitude band.
2460    o update output (external_forcing_surf modif. change truncation errors)
2461       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
2462    
2463    checkpoint51k_post
2464    o change default to: useNHMTerms=.FALSE.
2465     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
2466       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
2467     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
2468        exp1, ideal_2D_oce
2469     - change data file of oceanic exp (leave the results unchanged for now)
2470       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
2471    o set gravitySign automatically according to the vertical coordinate used
2472      (and change sign: back to "logical" value: +1 when R increases downward)
2473    o added an include barrier to the default CPP_OPTIONS.h and
2474      removed the #include "PACKAGES_CONFIG.h" from it
2475    o fix a bug in mom_fluxform (from chk51j_post)
2476    
2477    checkpoint51j_post
2478    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
2479    o adjusted some flow directives (dynamics, thermodynamics)
2480    o added cubed-sphere case to test cost function
2481    o heckpoint_lev?_directives.h now include
2482      pkg-specific directives, whenever those are enabled.
2483    o Moving pkg-specific flow directives to corresponding pkg
2484      Moving pkg-specific differentiation list to corresponding pkg
2485      Moving pkg-specific checkpoint-lev storing to corresponding pkg
2486      ---> conventions are
2487           - pkg_ad.flow
2488           - pkg_ad_diff.list
2489           - pkg_ad_check_lev?_dir.h
2490    
2491    checkpoint51i_post
2492    o merge of the branch-genmake2
2493      - knowingly breaks the older genmake
2494      - automatic generation of all ALLOW_${PKG_NAME} defines
2495      - new testreport supersedes older testscript
2496    o large number of package inclusion and header cleanups
2497    checkpoint51i_pre
2498    
2499    o new output for adjoin of global ocean vector invariant
2500    o fix for checkpoint of thermodynamic seaice and bulk_force
2501    o Steph gchem various cleanups
2502    
2503    checkpoint 51h_pre
2504    o fixed some single quotes
2505    o modify gchem pkg to be more versatile
2506    o modifications to clean up dic pkg
2507    o add pkg/cfc
2508    
2509    checkpoint51g_post
2510    o provide links for ARPACK and ADM*TLM
2511    o start removing verification/vero/
2512    o update AD-related stuff
2513      (in particular some IF-statements in model/src/ routines)
2514    o adding to verification/global_ocean.90x40x15/ adjoint of
2515      vector invariant setup
2516    
2517    checkpoint51f_post
2518    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
2519    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
2520      of tracer Green's fucntions for ocean inversion project.
2521    
2522    checkpoint51f_pre
2523    o Added on-the-fly spatial interpolation capability
2524        "USE_EXF_INTERPOLATION" to pkg/exf.
2525      - This is a temporary Cartesian-grid hack until
2526        the super-duper ESMF coupler becomes available.
2527      - See verification/global_with_exf/README for usage example.
2528      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
2529        flags and modified pkg/seaice accordingly.
2530    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
2531        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
2532        non-local transport term.
2533    
2534    checkpoint51e_post
2535    o pkg/mom_vecinv:
2536      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
2537      - add time-ave diagnostic of vorticity advection.
2538    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
2539    o atmospheric geopotential: - include water vapor effect;
2540                                - use p^kappa in p* scaling.
2541    o land pkg: read initial state from files.
2542    o AIM : add stratospheric drag in the upper level
2543    
2544    checkpoint51d_post
2545    o change function ILNBLNK (=> last non-blank char.) to return zero
2546      (instead of the string length) when the string. char is empty
2547    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
2548    o modif's to restore TAMC compatibility
2549      - avoid "_d" constructs in PARAMETER declarations
2550      - avoid interrupting lines by comment lines
2551    o Use cluster local disks for purely local I/O
2552      vs. globally visible disks needed for ctrl stuff
2553      (merged from ecco-branch)
2554      - new active_file_loc... and mdsio_..._loc routines
2555      - affected packages: autodiff, ctrl, grdchk, mdsio
2556    
2557    checkpoint51c_post
2558    o introducing integer flag debugLevel
2559      - debLevZero: suppress all output
2560      - debLevA: standard
2561      - debLevB: equivalent to current debugMode=.TRUE.
2562    o introducing pathname variable mdsioLocalDir for mdsio
2563      that can be specified at runtime
2564      (relevant for cluster I/O to local disk)
2565    `
2566    >>>checkpoint51b_post
2567    adjoint of ptracers
2568    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
2569    o extended state in checkpoint_lev?, etc.
2570    o alternative ctrl/cost with tr1 or ptracer
2571    o new comlev1_bibj_ptracers
2572    o new ptracers.flow
2573    o made ptracers_forcing same as external_forcing_s
2574    o added verification for adjoint with ptracers
2575      - adm. grdchk fail so far
2576      - tlm. grdchk OK
2577      - checked tapelev/comlev recomputations: OK
2578    <<<checkpoint51b_pre
2579    
2580    checkpoint51a_post
2581    o added code for biogeochemistry package
2582      - new pkgs: dic, gchem
2583      - new subroutine in ptracers
2584    o modify code for biogeo packages
2585      - in model/src and pkg/ptracers
2586    
2587    checkpoint51
2588    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
2589      - autodiff, ctrl, exf, grdchk, seaice
2590      kept separate packages
2591      - cost, ecco, obcs
2592    o updating verification/internal_wave, verification/lab_sea
2593      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
2594    
2595    checkpoint50i_post
2596    o Preparing next differentiable checkpoint and sync
2597      of MAIN vs. ecco-branch
2598      - 1st step: this one is differentiable
2599      - 2nd step: next(! not this) checkpoint will have updated packages
2600                  from ecco-branch)
2601    
2602    checkpoint50h_post
2603    o new package "land": provide surface BC for AIM.
2604    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
2605    o AIM: use true log-P extrapolation for near surface temp (= as in
2606        F.Molteni paper) ; update aim.5l_cs output.
2607    o New variable in PARM03 for more flexible pickups
2608    o somewhat cleaned package initialisation sequence for
2609      ctrl/ cost/ ecco/ in packages_... routines
2610    
2611    checkpoint50g_post
2612    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
2613      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
2614      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
2615        made the default because of faster convergence than ADI
2616    
2617    checkpoint50f_post
2618    o exf totally restructured
2619      - replaced all exf_set_ routines by one generic exf_set_gen.F
2620        and made sure it's still differentiable
2621      - split exf_getffields.F into new exf_bulkformulae.F
2622      - exf_inscal_/exf_outscal_ suffixes consistent with field names
2623      - updated adjoint/makefile and relevant verif. accordingly
2624    
2625    checkpoint50f_pre
2626     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
2627          + change Evap over land. (update aim.5l_cs output)
2628     o added missing .cvsignores and made uniform across expts
2629     o changed configuration of tidal_basin_2d expt
2630     o added pkg/debug functions for tracing code in fatal crashes
2631     o tidied pkg/monitor to use MONITOR_OPTIONS.h
2632     o new fn in pkg/monitor to stop model if solution grows too big
2633     o removed lots of single quotes from comments
2634    
2635    checkpoint50e_post
2636    o make KPP work with PTRACERS
2637     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
2638       nearly a copy of kpp_transport_s
2639     - there is no analogue to SurfaceTendencyS, so I have to use
2640       gPtr(of the surface layer) instead
2641    o add a new platform SunFire+mpi (SunFire 15000) to genmake
2642    checkpoint50e_pre
2643    
2644    checkpoint50d_post
2645    o change kpp output from multiple-record state files to single-record state
2646      files analogous to write_state.F
2647    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
2648      analogous to the cg2d-related output.
2649    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
2650      so that writing to internal file fn (with length 512) fails.
2651    checkpoint50d_pre
2652    
2653    checkpoint50c_post
2654    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
2655    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
2656    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
2657    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
2658    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
2659    
2660    checkpoint50c_pre
2661    Merging from release1_p13:
2662    o bug fix for pkg/seaice dynamic solver
2663    o Added SEAICE_initialHEFF to pkg/seaice
2664    
2665    checkpoint50b_post
2666    o store u*,v* in gU,V instead of in guNm1,gvNm1
2667    o in order to put the momForcing out of the Adams-Bashforth:
2668      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
2669      to timestep.F
2670    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
2671    o re-generate output for highly sensitive test-exp:
2672       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
2673    
2674    checkpoint50b_pre
2675    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
2676    o corrected CPP option mismatch in exf_Bulk... functions for case
2677      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
2678    
2679    checkpoint50a_post
2680    o Bug fix for merging between c50 and KPP.
2681      ikey was passed from thermodynamics to kpp_calc via
2682      common block rather than being recomputed in kpp_calc,
2683      in contradiction with new key itdkey.
2684      New key ikppkey created, and tamc.h headers updated.
2685    
2686    checkpoint50
2687    - 2nd step of merge with ecco-branch:
2688      merge changes in ecco-branch back into main trunk
2689    - bug fix in find_alpha
2690    - more storing in gmredi_calc_tensor.F, kpp_routines.F
2691    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
2692    - merged some sliced AD support routines
2693    
2694    checkpoint49
2695    merged from ecco-branch:
2696    o exf:
2697      - Enable initialisation of forcing fields to constant
2698        (runtime) values.
2699      - in exf_getffields.F
2700        Reduce i-/j-loop to interior domain, discarding overlaps.
2701        That also fixes wrong TAF-key computations for key_1, key_2
2702        with bulf formulae.
2703      - exf_init.F modify #ifdef for exf_init_evap
2704      - exf_getffieldrec.F, ctrl_getrec.F
2705        The following INT-usages are not safe:
2706          fldsecs  = int(fldsecs/fldperiod)*fldperiod
2707          fldcount = int(fldsecs/fldperiod) + 1
2708        and were modified.
2709    o autodiff: checkpoint_lev...
2710      - updated storing for bulk formulae (some arrays were missing)
2711      - added state for seaice package
2712      - synchronized with main branch
2713    o DIVA:
2714      Modif.s in
2715      - the_main_loop.F
2716      - the_model_main.F
2717      and added cost_final_restore.F cost_final_store.F
2718      o With these changes, it is possible to fully separate
2719        the first forward run to compute the cost function (mdthe_main_loop)
2720        and adjoint runs over individual DIVA intervals (adthe_main_loop)
2721        into separate model executions.
2722        This enables better tuning of DIVA to given queue sizes.
2723      o Loss of cost function value in consecutive DIVA runs is
2724        fixed by storing to 'costfinal' file.
2725      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
2726        beginning/end of adjoint integration is accounted for.
2727      The current changes apply to TAF-1.4.26.
2728      TAF has one remaining bug, requiring one manual change
2729      (see MITgcm manual).
2730    o cal: synchronized between MAIN and ecco-branch
2731    
2732    checkpoint48i_post
2733    o Changes to restore differentiability of code w.r.t. previous tag
2734      (mostly adding new routines to make list and replacing
2735      pressure by totPhiHyd).
2736    o Updated and merged grdchk package
2737      - has both ADM and TLM checks
2738      - works for single- and multi-proc.
2739      - output cleaned
2740      - worked successfully for parallel DIVA
2741    o genmake:
2742      - Adding -platform=SP4
2743      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
2744    o Modif. for DIVA:
2745      ctrl_unpack should not be called in intermediate DIVA interval.
2746      (similar thing would apply for active files such as
2747      tbar, sbar, psbar, which should not be reinitialised;
2748      only relevant for ecco-branch)
2749    
2750    checkpoint48h_post
2751    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
2752    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
2753    o Added SEAICE_initialHEFF to pkg/seaice
2754    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
2755    
2756    checkpoint48g_post
2757    --- EOS:
2758    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
2759      store total Potential in totPhyHyd for diagnostics & EOS.
2760    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
2761    --- Pressure/geopotential gradient:
2762    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
2763    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
2764      ( changes results of global_ocean_pressure )
2765    o NLFS + z-coord.: add eta*Rho' contribution.
2766    o accurate phiHyd when using interface-W at the middle between 2 centers
2767     ( changes results of ideal_2D_oce )
2768    o includes r* 2nd term in potential gradient.
2769    
2770    checkpoint48f_post
2771    Merging from release1_p12:
2772    o Modifications for using pkg/exf with pkg/seaice
2773      - improved description of the various forcing configurations
2774      - added basic radiation bulk formulae to pkg/exf
2775      - units/sign fix for evap computation in exf_getffields.F
2776      - updated verification/global_with_exf/results/output.txt
2777    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
2778      (SBO) core products, including oceanic mass, center-of-mass,
2779      angular, and bottom pressure (see pkg/sbo/README.sbo).
2780    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
2781      to avoid negative values in shallow regions.
2782      - updated verification/natl_box/results/output.txt
2783      - updated verification/lab_sea/results/output.txt
2784    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
2785    o Added useSingleCpuIO option (see PARAMS.h).
2786    o Updated useSingleCpuIO option in mdsio_writefield.F to
2787      work with multi-field files, e.g., for single-file pickup.
2788    o pkg/seaice:
2789      - bug fix in growth.F: QNET for no shortwave case
2790      - added HeffFile for specifying initial sea-ice thickness
2791      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
2792    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
2793      kpp_transport_t.F, forward_step.F, and the_main_loop.F
2794    o pkg/seaice:
2795      - adjoint-friendly modifications
2796      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
2797    
2798    checkpoint48e_post
2799    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
2800    o dynamics: change definition of computational domain & adapt mom_fluxform
2801      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
2802    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
2803        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
2804        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
2805        global_ocean.90x40x15 global_with_exf global_ocean_pressure
2806        inverted_barometer solid-body.cs-32x32x1
2807      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
2808    
2809    checkpoint48d_post
2810    o in preparation for r*:
2811     a) use pre-computed gradient of hydrostatic potential:
2812        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
2813     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
2814        => affects results of glob_oce_pressure (different truncation error)  
2815      update output.txt of ideal_2D_oce & global_ocean_pressure
2816    
2817    checkpoint48d_pre
2818    o in preparation for r*:
2819      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
2820      pass the 2 comp. of the grad. as arguments to momentum S/R.
2821      but for the moment, only used if it does not change the results.
2822    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
2823    
2824    checkpoint48c_post
2825    Modifications in treatment of initial flux forcing controls
2826    to avoid extra storing of flux fields.
2827    
2828    checkpoint48c_pre
2829    o Added tidal_basin_2d experiment (currently 1D!)
2830    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
2831    
2832    checkpoint48b_post
2833    o r* coordinate added in #ifdef NONLIN_FRSURF block.
2834     (modification to pressure gradient not yet implemented)
2835    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
2836      (for U & V) that are used for vertical advection of momentum.
2837    
2838    checkpoint48a_post
2839    o In preparation for r*, use temp. array to compute vertical transport
2840       in flux-form momentum pkg. => change results of few test-exp.
2841      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
2842                        lab_sea, natl_box & plume_on_slope
2843    
2844  checkpoint48  checkpoint48
2845  o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')  o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
2846    

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