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revision 1.76 by jmc, Fri Jul 12 14:52:08 2002 UTC revision 1.847 by heimbach, Thu Jun 28 00:35:07 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 gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
8      scheme and the corresponding test case (under front_relax dir). For now,
9      only available with Skew-flux form and not yet tested in realistic set-up.
10      adjoint: store directives updated, but gradient checks deteriorated,
11      so maybe GM/Redi adjoint is now broken.
12    o seaice adjoint
13      * add AREA, HEFF, HSNOW as control variable
14        (should not change lab_sea results)
15      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
16    o pkg/seaice: added computation of saltFlux in seaice_growth;
17       For time being, sea ice salinity is assumed constant
18       contribution of snow flooding to freshening of sea ice is neglected.
19       SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
20       defaults to 0.0 in order to maintain backward compatibility.
21       Typical values for SEAICE_salinity are 4 to 10 g/kg.
22    
23    checkpoint59d
24    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
25     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
26     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
27    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
28     and change default value of parameter "GM_Small_Number";
29     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
30       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
31       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
32    o pkg/ecco: cost function when applying pkg/smooth to controls
33    o pkg/ctrl: add forcingPrecond run time parameter
34    o pkg/seaice:
35     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
36     - fix bug in metric terms of u-equation in LSR solver (implicit part),
37       changes verification/lab_sea
38     - rearrange implicit part of u-equation in LSR solver to make it easier to
39       read, understand, and debug. This causes changes at the truncation level.
40     - fix (serious) bug in the boundary conditions (sign error in the implicit
41       part) of the LSR solver. Changes all LSR results.
42     - fixed problem with HSNOW initialization to avoid thick snow when AREA
43       is initilized with small values - does not change lab_sea results.
44     - added HsnowFile initialization capability
45    o pkg/smooth: addition to model/src and pkg/ctrl so allow
46     initialization of pkg/smooth and application to control vector
47    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
48    o dependencies: pkg/profiles requires pkg/cal
49    o pkg/profiles:
50     - added option ALLOW_PROFILES_GENERICGRID
51         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
52         that interpolation information (grid points and coefficients) is provided
53         within the netcdf input files.
54         -> sample matlab scripts can be found in MITgcm_contrib/gael
55         that allow you to prepare netcdf input files.
56     - also modified: cleaner include statements, cleaner error print statements,
57       cleaner stops when error, and more tests of the netcdf input files consistency.
58    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
59    o pkg/seaice:
60     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
61       requires a new routine: seaice_diagnostics_fill.F
62     - make sure that seaice does not move if not forced (pressure replacement
63       method, Hibler and Ip, 1995), changes results
64     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
65     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
66       It is turned off by default (=-1.), because it changes the results.
67     - make it possible to read AREA from a file, too.
68    
69    checkpoint59c
70    o add S/R and diagnostics for oceanic mixed-layer depth
71    o move GMRedi call after all vertical mixing schemes (including KPP)
72    o pkg/thsice:
73     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
74      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
75    o pkg/obcs:
76     - bug fix for balance code
77    o pkg/seaice:
78      - allow values of SEAICE_elasticParm > 1
79      - add new parameter SEAICE_evpTauRelax as an alternative
80        to SEAICE_elasticParm
81      - make lsr boundary conditions free slip (by default), changes result
82      - add code for no slip boundary conditions for lsr
83      - set minimum of zeta to zero (and not 4e8) (changes results)
84      - add a cap on AREA after advecting AREA if seaice_growth is not called
85    o change calculation of Visbeck K:
86      - no longer depend on tapering scheme; instead, compute slope (limited
87        by GM_maxSlope). this is equivalent to what was comuted before with
88        clipping or linear tappering.
89      - fix vertical averaging (wrong by 1/2 level)
90      - leave the old version (but will not be maintained) within
91        #ifdef OLD_VISBECK_CALC / #endif
92      - update output of exp. ideal_2D_oce
93    o change error catch in calc_r_star to improve vectorization
94    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
95      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
96    o adjoint:
97      Re-organized adjoint checkpointing according to Matt Mazloff
98      (but with modifs/completions/cleanups)
99      Storing is now bundled into large arrays to optimized I/O
100      (and second step in cleanup of the_main_loop)
101    
102    checkpoint59b
103    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
104      - export/import (between ocean & coupler) fields needed for ocean DIC.
105    o pkg/seaice:
106      - get rid of three more exchanges seaice_calc_viscosities (required
107        different loop boundaries in seaice_lsr and seaice_ocean_stress)
108      - bug fix in seaice_ocean_stress (update of lab_sea required)
109      - reduce loop boundaries to necessary minimum also in seaice_evp
110      - go back to the old way of computing deltaC/Z as the adjoint likes that
111        better
112    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
113      passive tracer to an Age Tracer) + update output.txt
114    o pkg/exf:
115      - implement A-grid / C-grid selection for wind-stress input files.
116      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
117      for now, in exf_bulk_largeyeager04.F only :
118      - change implementation for case where windspeed + 2. components wind-stress
119        are read-in. AND use rhoConstFresh to convert evap.
120    o pkg/seaice:
121      - use correct EXCH_UV for wind-forcing (on A-grid).
122      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
123        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
124    o pkg/exf:
125      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
126      EXF_INTERPOLATION:
127      - merge global_with_exf/code version of exf_interp_read.F
128        to the main code ;
129      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
130        reading the file ; Important: This options needs to be defined to recover
131        previous code.
132        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
133      - no longer loose real*8 precision along the way when using exf_iprec=64.
134    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
135      - change discretisation of evp-solver in order to avoid another exchange
136        (changes lab_sea) and clean up a little
137      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
138        help the adjoint (this also changes the results slightly)
139      - add a few "_d 0" where they had been missing in seaice_evp.F
140      - cleaning up: remove unused seaice_calc_rhs.F
141    o pkg/exf: some cleaning-up:
142      - change various "constants" into runtime parameters
143      - cleaned-up Large&Yeager04 routine which should eventually
144        replace exf_bulkformulae.F (changed names of S/R and CPP)
145        and merged various ALLOW_ATM_WIND options
146     only used with thsice pkg (in thsice_get_exf.F):
147      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
148        which are used when useStabilityFct_overIce=TRUE (= the default)
149      - change default values of ice & snow emissivity and scale downward LW
150        by ice & snow emissivity.
151    o pkg/thsice:
152     fix few little problems, in thsice_calc_thickn.F:
153      - growth vertically (and not laterally) if iceFrac == iceMaskMax
154      - melt only laterally if hIce < hThinIce (as the comments say)
155      and in thsice_extend.F:
156      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
157      - start to form ice as soon as the minimum ice-volume is reachable.
158     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
159      and cpl_aim+ocn
160    o pkg/kpp
161     - move computation of surface related input fields to KPP into a new
162       subroutine kpp_forcing_surf.F
163     - remove wrong (within bi,bj loops) EXCH calls.
164     - little cleaning (add argument myThid in last position, cvs header ...)
165     - for now, fix conservation problem by exchanging KPPviscAz (may not
166       be the best fix)
167    o pkg/seaice
168     - check for inconsistent evp parameter/cpp-flag combination
169     - remove leftover errIO flat for obsolete name list error handling
170    o OpenAD
171     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
172    
173    checkpoint59a
174    o pkg/seaice: some parameter clarifications and a little bit of clean up
175    o pkg/thsice: rename run-time parameters:
176       himin       -> hIceMin
177       himin0      -> hThinIce
178       hihig       -> hThickIce
179       i0          -> i0swFrac
180       transCoef   -> bMeltCoef
181       frac_energy -> fracMelting
182      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
183       with default values (for now) that do not change the results.
184      remove old version of thsice vars advection in pkg/seaice.
185    o in FFIELDS.h:
186      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
187      - make pLoad & sIceLoad always available (but still only used if
188         ATMOSPHERIC_LOADING is #define).
189    o pkg/kpp: replaced _KPP_RL with _RL
190    o bug fixes for vertical diffusivity computations when both KPP and
191        3D diffusivity arrays are used.
192    o pkg/seaice: fix bug in evp solver, while doing that
193      - change (improve?) discretization of stress computations for both
194        cgrid-lsr and evp solver
195      - add a new routine to compute strain rates
196      - the above changes lab_sea results
197      - add no slip conditions for evp solver (off by default), lsr-version
198        may follow
199      - fix exchange for shear at Z-points (does not change lab_sea)
200      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
201        (to force the user to pick a time step since there is not "safe" way
202        of choosing it)
203      - add principal stress diagnostics
204      - rearrange fields for evp a little to avoid having to call a: too many
205        exchanges and b: exchanges for stress trensor components which we do
206        not have.
207      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
208        of evp, complete rewrite for lsr case (latter is does not yet work
209        in all cases)
210    o pkg/kpp: add code to have mixing in shelf ice caverns
211      - add myThid to all kpp routines (long overdue)
212    
213    checkpoint59
214    o pkg/exf:
215      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
216        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
217      - move exf header files from lower_case.h to UPPER_CASE.h ;
218        add missing cvs Header & Name
219      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
220      - add namelist param. selectStressGridPosition, exf_monFreq
221      - retire many _CLIM routines, and remove data.exf_clim
222        + params moved to data.exf
223        + climsst, climsss now handled by exf_set_gen, i.e.
224          climss?period=0 refers to constant field,
225          climss?period=-12 to monthly forcing
226      - split up namelists in data.exf
227    o pkg/seaice:
228      - remove seaice_exch and seaice_exch_uv
229      - remove superfluous exchange of theta
230      - add myThid to seaice_budget_ocean/ice
231      - add new interface for atmospheric wind forcing (C-grid only)
232        + new routine
233        + two new field (taux, tauy for stress over ice)
234        + removed one global field (DAIRN) for C-grid case only
235    o pkg/thsise
236      - 2nd set of modifs for thsice adjoint in conjunction with exf
237    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
238    
239    checkpoint58y_post
240    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
241      vertical diffusivity, similar to that in MOM4; turned on using
242      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
243      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
244    o Added capability for 3D specification of background vertical diffusion
245      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
246      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
247      "data" file that contains the 3D vertical diffusivity coefficients.
248    o ice dynamics (pkg/seaice) with thsice thermodynamics:
249      - add code within pkg thsice to advect & diffuse sea-ice fields
250      similar to (and will replace) what has been added in  seaice_advdiff.F,
251      but: - conserving Mass, Heat & Salt.
252           - better when using non-linear advection scheme (not yet fully tested)
253           - can also be used in atmospheric set-up (for now, only the diffusion).
254    
255    checkpoint58x_post
256    o IO option for global-file compact format:
257      - add options when generating topology (utils/exch2/matlab-topology-generator)
258      - add I/O capability (pkg/mdsio).
259      - adapt utils/matlab/rdmds.m to read this format.
260      for now long-line format not yet supported by pkg/mdsio (& exch2).
261    o shelfice: add a few diagnostics
262    
263    checkpoint58w_post
264    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
265      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
266      (and replace horiVertRatio in NH code).
267      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
268                         and tutorial_plume_on_slope (sensitive to truncation)
269    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
270      directly to drive seaice model (C-grid only)
271    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
272     - reintroduce computation of wind from stress,
273     - compute tau (in exf_bulkformulae.F) from windstress averaged to
274       mass points to avoid tau = 0
275     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
276    o rdmnc.m: make it work with "global" files created with gluemnc
277    o rdmnc.m : some improvements in dealing with singleton dimension
278      (tested on all testreport mnc output files).
279    o genmake2: disable pkg/profiles if netcdf test fails.
280    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
281    o move call to cal_readparms up to make calendar parameters/variable available
282      to all packages
283    
284    checkpoint58v_post
285    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
286      useDynP_inEos_Zc tested.
287    o pkg/exf: changes to properly interpolate/mask/scale initial fields
288    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
289      and portions thereof.  See read_cs.txt for description and examples.
290    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
291      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
292      following the great-circle arc between those 2 points.
293    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
294      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
295    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
296     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
297     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
298     - still needs work (not working with some options ; efficiency to improve)
299       and serious testing.
300     - use this scheme for temperature & salinity in 2 advection test exp.:
301       advect_xy & advect_xz, respectively.
302    
303    checkpoint58u_post
304    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
305    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
306    o testreport: add option "-skipdir" to skip some test.
307    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
308      momentum calculation.
309    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
310    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
311      remove checkpoint.F and the_correction_step.F (no longer used);
312      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
313    o add option (linFSConserveTr) to correct for tracer source/sink due to
314      Linear Free surface
315    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
316    o pkg/thsice: fix reading mnc-pickups
317    
318    checkpoint58t_post
319    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
320    o pkg/mdsio:
321     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
322       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
323       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
324     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
325     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
326       either MDS_READ_FIELD or MDS_WRITE_FIELD )
327     - new S/R (to replace MDSWRITEMETA), which allows to write more
328       informations (variable names, time ...) to meta files.
329     - modify rdmds.m to give back the meta file content.
330    o pkg/diagnostics: change vertical interpolation to be safer, and more
331       flexible (define p-levels to interpolate to in data.diagnostics);
332      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
333       diagnostic pointer.
334    o pkg/seaice: more cleaning up of seaice_growth, added many comments
335    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
336    o fix multi-category seaice:
337     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
338       SEAICE_MULTICATEGORY
339     - fix short wave heat flux
340    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
341       and allow to use EVP solver. Change forward lab_sea: test both EVP
342       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
343    o Initial check-in of lab_sea adjoint
344      (very similar to natl_box_adjoint/code_seaice)
345      * used C-grid and EVP solver
346      * used KPP, GM/Redi
347      * uses inAdExact=.TRUE.
348      * gradient checks fail for both ADM and TLM
349        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
350        f.d. gradients actually seem more problematic than ADM, TLM gradients;
351        issue is related to forward mismatch between g77 an ifort
352    o pkg/seaice: overhaul of thermodynamics
353     - growth.F and groatb.F are replaced by new routine seaice_growth.F
354     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
355     - move a few global fields out of SEAICE.h into seaice_growth.F and
356       make them 2D (FICE/QNETO/ ...)
357     - remove FO (it is the same as QNETO)
358     - introduce a few local fields to avoid modifying external fields such
359       as atemp, etc.
360    
361    checkpoint58s_post
362    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
363      changed exf_set_gen.F so that
364        genperiod=0 means input file is one time-constant field and
365        genperiod=-12 means input file contains 12 monthly means
366    o CG2D: use pre-computed solver main-diagonal (stored in common block);
367      this affects truncation error ; generate new output file for exp. which
368      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
369        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
370        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
371        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
372        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
373        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
374    o start implementation of deep-atmosphere and anelastic formulation
375    o verification: remove 2nd copy of input files and use script "prepare_run"
376      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
377    o mom_common/vecinv/fluxform: fix a few initialisation isssues
378    o profiles: fix for multithreaded case
379    
380    o diagnostics: rename few diags:
381      s/'PRESSURE'/'RCENTER '/g
382      s/'TICE    '/'oceFreez'/g
383      s/'TAUX    '/'oceTAUX '/g
384      s/'TAUY    '/'oceTAUY '/g
385      s/'SWFLUX  '/'oceQsw  '/g
386      s/DIFx/DFxE/g
387      s/DIFy/DFyE/g
388      and add few ocean-forcing diagnostics:
389      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
390    o modifications to pkg/seaice/growth.F and budget.F, which change results of
391      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
392      as actual snow thickness.  It now refers everywhere to effective snow
393      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
394    
395    checkpoint58r_post
396    o modifications to pkg/seaice/growth.F, which change results of
397      lab_sea experiment: fixes pertain to melting snow over open water, to
398      masking EVAP under sea ice, and to using the correct AREA variable for
399      computations of EVAP, PRECIP, HSNOW, and GHEFF
400    o add ability to read bathy, salt, and theta using MNC (off by def)
401    o add flooding algorithm and advection of HSNOW for pkg/seaice;
402      both are turned off by default and do no change any results
403    o seaice advection with pkg/thsice: a step toward the use of non-linear
404      advection scheme, but #ifdef or commented out for now (requires more EXCH).
405    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
406      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
407      in natl_box (affects results @ truncation level: update output.txt)
408    o multi-threading and IO:
409      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
410      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
411        (needed to work with SingleCpuIO): tested in all verif. exp.
412    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
413      affects the results (but none of the verification test uses this scheme).
414    o Adding some pkg/diagnostics capability to pkg/seaice
415      (will certainly be subject to changes)
416    o ctrl: adding new control variables:
417      lwflux, lwdown, evap, snowprecip, apressure, runoff
418    
419    checkpoint58q_post
420    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
421      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
422      high_res_cube configuration by 4% on Columbia.
423    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
424      add (in global_with_exf/code) a version of EXF_INTERP_READ without
425      dynamical allocation (seems to work in multi-threaded).
426    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
427      single CPU io) so that TAF does not have to see EESUPPORT.h
428    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
429    
430    checkpoint58p_post
431    o obcs: stop if obcs is used with useCDscheme = .true.
432    o shelfice:
433     - fix a sign error so that no slip at shelfice interface works
434     - remove stop for combination non-hydrostatic code and shelfice. That does
435       not mean, that the results are correct, but at least they are numerically
436       stable
437    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
438    o added adjoint exch routined for all exch*3d* routines
439      and updated flow directives
440    
441    checkpoint58o_post
442    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
443      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
444    o change controling S/R for writing pickup file (new S/R do_write_pickup)
445      and clean-up reading/writing of pickup files.
446    o fix local version of read/write pickup (NH part) in rotating_tank/code
447    o simplify EXCH interface:
448     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
449     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
450    o added the regrid package
451    o shelfice:
452     - add a simple boundary layer scheme to reduce noise
453     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
454    
455    checkpoint58n_post
456    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
457       local variable (not in common block).
458    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
459      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
460      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
461        to work with SingleCpuIO.
462    o add "_d 0" to real constant of pkg/cfc subroutines ;
463       update exp. cfc_exemple & tutorial_cfc_offline output files.
464    o multi-threading and IO:
465      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
466        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
467      - barrier before and after reading.
468      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
469      - avoid using MDS_WRITELOCAL for LAND pkg output.
470      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
471        common-block variables ; Allows multi-threading with master-thread IO.
472    o change default MAX_NO_THREADS from 32 to 4 ;
473      and stop cleanly when MAX_NO_THREADS is too small.
474    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
475    
476    checkpoint58m_post
477    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
478       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
479    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
480       keep global_ocean.90x40x15 (for AD testing) with former secondary test
481       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
482    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
483        add MITgcm_tutorials (= code + all the tutorials)
484    o ecco, option to compute cost for total ssh (mean+anom)
485    o consistent with addition of ptracer and ssh in pkg/profiles
486    o profiles: adding ptracer and ssh
487    o testreport: change multi-test output-file name
488      (from output.txt.{name} to output.{name}.txt)
489    o profiles: now ok for mutli-tiles case
490    o seaice: add 4 parameters for different advection schemes for area,
491      (effective) seaice thickness, enthalphy, and snow height. Their default
492      is the standard parameter SEAICEadvScheme
493    o calc_gw:
494     - add cosFacU in zonal viscous flux (harmonic.visc.).
495     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
496       of tutorial_plume_on_slope.
497    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
498    o calc_gw: true flux-form, account for horizontal grid spacing.
499      update rotating_tank results, but not plume_on_slope (affected at
500      truncation level, 11 digits).
501    
502    checkpoint58l_post
503    o calc_gw:
504     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
505     - remove side-drag for now (need to fix it); update plume_on_slope results.
506     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
507    o commit code to make SST/SSS weights spatially variable
508      (based on either variable in-situ or variable initial T/S weights)
509    o pkg/ecco:
510      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
511        now based on horizontally varying weights wthetaLev, wsaltLev
512      * cost_averagesflags now returns year indices in addition to day, month
513      * sflux balance is performed on annual basis
514        (sflxumm, sfluxmm2, bal_sfluxmm)
515      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
516        including separate counting and multipliers
517    o pkg/rbcs
518      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
519    
520    checkpoint58k_post
521    o testreport:
522     - always build in dir. "build" (if not there, mkdir build instead of building
523       & running in input)
524     - run in dir run (if it exists), in build otherwise.
525     - call prepare_run (if input/prepare_run exists)
526     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
527    o pkg/exf modifications to interpolation and rotation routines for more
528       reasonable treatment of North Pole singularity: for tracers North Pole
529       value is set to northernmost zonal-mean value, for zonal velocity it is
530       set to zero, and for meridional velocity it is set to northernmost value.
531    o pkg/exf/exf_check_range.F
532     - add tile index to diagnostics and move stop statement to the very
533       end of the routine.
534    o pkg/diagnostics: (diagnostics_main_init.F)
535      define title of isomorphic variables according to the current config.
536    o pkg/thsice with pkg/seaice dynamics:
537    - fix domain of computation (interior only, required for exf) and do exchanges
538    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
539    o towards a standard way of dealing with multi-threading in MONITOR
540      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
541    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
542       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
543    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
544    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
545    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
546       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
547    o tracer advection:
548     - clean-up and simplify calc_common_factors.F
549     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
550       advection subroutine (but still not used within DST advection S/R)
551    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
552    
553    checkpoint58j_post
554    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
555      from file (collects calls previously in FORWARD_STEP)
556    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
557    o adjoint store dir. adjusted accordingly
558    o genmake2
559      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
560    
561    checkpoint58i_post
562    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
563      on wind stress (SEAICEstressFactor defaults to 1.)
564    o Total number of Timers is finite (<=40): comment out 2 non-essential one
565      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
566    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
567      on CS-grid: no longer loosing mass.
568    o exf & curvilinear-grid: no longer modify longitude xC & xG.
569    o pkg/ggl90: fix sloppy output and fix a bug
570    o pkg/seaice: added SEAICEuseEVPpickup parameter
571      - Set to false in order to start EVP solver with
572        non-EVP pickup files when using SEAICEuseEVP
573      - fix sign error in diffusion in seaice_calc_rhs
574    
575    checkpoint58h_post
576    * Modifications for bottom topography control
577      o replace hFacC by _hFacC at various places
578      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
579      o add non-self-adjoint cg2d_nsa
580      o update autodiff support routines
581      o re-initialise hfac after ctrl_depth_ini
582      o works for 5x5 box, doesnt work for global_ocean.90x40x15
583    * Adding verification for 5x5 box (4-layer) bottom topography control
584    
585    checkpoint58g_post
586    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
587       used for mean seasonal cycle, mean diurnal cycle); add an example
588       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
589    o pkg/ggl90:
590      - add parameter (minimum surface kinetic energy)
591      - fix bug (avoiding division by zero)
592    o couple pkg/thsice to pkg/seaice:
593      - modify advection in seaice to accomodate new scalar fields to be advected
594      - only muliDimAdection scheme work with seaice/thsice
595      - mapping of thsice-variables to seaice-variables, back and forth
596      - does not break the verification experiments, but does not give the
597        desired results either
598    o pkg/seaice
599      - make (default) second order advection a bit less confusing?
600    
601    checkpoint58f_post
602    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
603      to pkg/seaice):
604      - new routines thsice_map_exf and thsice_get_exf provide the interface
605      - add an additional formal parameter to thsice_solve4temp
606    o pkg/exf:
607      - add new fields wspeed, snowprecip (to be able to couple to thsice)
608      - correct Stefan-Boltzmann constant
609      - new parameter for longwave surface emittance
610      - separate some stuff from exf_bulkformulae into new routines  
611        exf_radiation, exf_wind
612      - add new parameters and constants: longwave emissivity for ocean, ice
613        and snow, evaporation parameters over ice
614      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
615        either wind from stress or stress from wind
616    o pkg/thSIce:
617    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
618    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
619       and THSICE_CALC_THICKN
620    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
621    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
622      to make debugging easier.
623    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
624    o pkg/bulk_force:
625      - clean-up comments and parameters ;
626      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
627    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
628      generate new output for test-experiment: aim.5l_cs.thSI
629    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
630      testreport accordingly
631    
632    checkpoint58e_post
633    o SEAICE_CGRID adjoint done
634    o R_STAR adjoint implemented.
635      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
636      * need to sort out init. of h0facc, etc.
637    o Make pkg/profile fully independent of ecco,cost, etc. stuff
638      to be able to use it in pure forward.
639    
640    checkpoint58d_post
641    o upgrade simple test-experiment to tutorial example:
642     step.1: duplicate the experiment and (step.2) will remove the old copy.
643      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
644      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
645      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
646      tutorial_global_oce_biogeo    <- copy of dic_example
647      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
648      tutorial_plume_on_slope       <- copy of plume_on_slope
649      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
650      tutorial_global_oce_optim     <- empty for now (David ?)
651      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
652     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
653    o correct a sign problem in cost_scat.F
654    o obcs and ptracers: fix boundary conditions for advections schemes
655      with larger stencil
656    o thsice adjoint: start
657    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
658      completeness
659    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
660      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
661    o ptracers adjoint:
662      * avoid extensive recomputatations
663      * fix missing re-init. of gptr (missed by TAF)
664    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
665      me to turn off the excessive output to STDOUT that this package produces
666    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
667      and add those terms in Vector-Invariant formulation.
668    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
669      if the control period (xx_hfluxperiod etc) is 0
670    o in profiles pkg, clean routines and fix details
671    o in ecco pkg, reading ssh data:
672      fix problem in case the model does not start at iter0=0
673    o fix mnc-pickup/restart for ptracers
674    o new package prifiles:
675      code to compute profile-based cost by Gael Forget
676      (modifs in ecco, ctrl, autodiff)
677    o Benign bug fix in initialization (spotted by M. Mazloff) of
678      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
679    
680    checkpoint58c_post
681    o adjoint: finish NLFS adjoint and provide reference output in
682      verification/global_ocean.90x40x15/results_ad_nlfs
683    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
684      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
685      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
686      with SEAICE_CGRID defined.
687    o move calendarDumps from "data" to "data.cal" and clean-up the code
688      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
689    o add useEXF & useCAL flags (for now, set in hard-coded way)
690    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
691      (were missing in NH mode, and wrong in quasihydrostatic mode).
692      waiting for Chris updated version of calc_gw to add those CALLs.
693    o fix bug in quasihydrostatic S/R ;
694      add a test for this option: global_ocean.90x40x15.qshyd
695    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
696      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
697    o add on/off flag useOffLine for package OFFLINE
698    o seaice:
699      - modify advection so that it works also on the C-grid
700      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
701        problem in multi-tile runs with C-grid
702      - add flags for clipping ice velocities and/or masking solver forcing
703      - fix drag (ocean on ice) formulation and a bug that caused noise in the
704        C-grid solver
705      - added a few comments to seaice_diffusion.F
706      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
707        are now exclusive)
708      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
709        required re-ordering the code a little:
710       + make DAIRN global variable (defined in SEAICE)
711       + move computation of the viscosities eta and zeta into a new separate
712         routine (because I need to recompute them in seaice_ocean_stress.F)
713    
714    checkpoint58b_post
715    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
716      update output.txt of exp. aim.5l_cs.thSI
717    o various mnc cleanups and improvements:
718      + shrink lookup tables by factor of ~4
719      + better error reporting when running out of lookup space
720      + able to handle longer path/file names (up to 500 chars)
721    o adjoint:
722      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
723      - TBD: "hidden" mom_vecinv recomp. in dynamics
724    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
725     (allow to differentiate between forcing components using new integer flags:
726      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
727     and add new flag to put Dissipation tendency out of Adams-Bashforth.
728    o ecco
729      - enable trend removal from SSH anomaly obs.
730    o adjoint
731      - a fix for PmEpR when #undef EXACT_CONSERV
732      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
733      - try to fix "hidden" recomp. in forward_step for NLFS
734        (NLFS seems broken sometimes after I checked it in)
735    o seaice:
736     - add c-grid version of the dynamic solver:
737       + three new routines that are the c-grid substitute lsr, dynsolver
738         and ostres
739       + put a few fields that were local to dynsolver into global common
740         blocks, so that I can move the computation of stresses etc into
741         seaice_lsr (saves coding but may break the adjoint).
742     - replace more hardwired parameters by runtime parameters
743     - add ice masks that mask the rhs of the implicit solvers where there
744       is no ice (commented out in seaice_dynsolver, because i am not sure
745       if this works properly), eventually this should replace the clipping
746       of ice velocities in seaice_dynsolver to +/-40cm/s.
747    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
748      include it only where its needed
749    o move balancing of fluxes before the call of external_forcing_surf
750    o seaice:
751      - correct units of turning angles (now they are really in degrees)
752      - move computation of GWATX/Y out of main routine into dynsolver
753      - initialize GWATX/Y in seaice_init
754    o Apply mask on Fresh-Water flux (needed for SSH forcing).
755      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
756    o seaice: add runtime flags for turning angles (default to zero)
757    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
758      and trend from exf forcing and ctrl control adjustments
759    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
760      (since checkpoint57x_post)
761    o change the default rotation period to 86164.s = the Earth rotation
762    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
763      and based on a reference stratification. Tested within hs94.cs-32x32x5.
764    o seaice advection: add code for choosing between the default (2nd order
765      central differences) and multiDim advection schemes provided by
766      pkg/generic_advdiff
767    o seaice:
768      - removed all references to SEAICE_GRID.h fields from
769        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
770        (cubed-sphere configuration will change a little)
771      - grid computations in seaice_init are obsolete now.
772      - cleaned up code a little so that is easier to read (hopefully).
773      - added new (better?) discretizations of default advection and diffusion
774        (turn on with SEAICEuseFluxForm)
775      - replace 1 in 3d global fields by kSurface in growth.F
776      
777    checkpoint58a_post
778    o seaice:
779      - bug fix in advect.F
780    o shelfice:
781      - separate shelfice load anomaly from pload (breaks with time
782        dependent forcing), => introduce constant field shelficeLoadAnomaly.
783        Its default is 0., but it may be computed more cleverly from (unknown)
784        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
785        done offline. A good approximation of the pressure load anomaly is
786        necessary to avoid large initial adjustment processes underneath
787        deep-reaching shelfice.
788      - small fix in ISOMIP shelfice_thermodynamics
789      - add more sophisticated thermodynamics of Hellmer (1989), this is
790        now the default
791      - give a few constants more intuitive names
792    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
793      if bulk formulae are used in long integration (especially EmPmR). Turn
794      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
795      if balancePrintMean, the imbalance that is substracted is printed to
796      STDOUT.
797    o fix bug (typo) in obcs_apply_eta.F
798    o add a new package shelfice which enables us to model the circulation
799      underneath shelf-ice with draughts of hundreds of meters.
800     - works
801     - to do: + include improved thermodynamics
802              + check whether kSurfC (from model/inc/SURFACE.h) can be used
803                instead of new field kTopC
804              + can we use topoFile, Ro_surf and existing code in ini_depth.F
805                instead of new field R_shelfIce and new code in ini_depth.F
806                and ini_mask_etc.F?
807              + adjust vertical mixing schemes?
808    o seaice pkg:
809     - add a cpp-flag to include a simple formula for a salinity dependent
810       freezing point of sea water at the surface
811     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
812       meridional stresses are now different (and hopefully correct)
813    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
814       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
815       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
816    o pkg/diagnostics: add options and parameters for regional-statistics
817       diagnostics ; define regions by reading a region-mask from a file
818       (might add other options later)
819    o pkg/bulk_force:
820     - add option and parameters to use AIM surface-flux formulae.
821     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
822       others forcing fields (defined in PARM05, parameter file "data") are loaded
823       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
824     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
825     - use the right EXCH call for uwind,vwind (to work on CS-grid).
826     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
827       and parameters (note: calcWindStress replaces .NOT.readwindstress).
828     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
829    
830    checkpoint58
831    o add "--embed-source" option to genmake2 which, when the supporting
832      tools can be compiled (as determined by genmake2) will turn on the
833      embed_files package which then embeds the entire MITgcm source code
834      (*.[fFhc] + Makefile) used for the build within the executable
835      - requested by CNH but off by default
836      - adds a paltry <9MB to the mitgcmuv executable in most cases
837      - only writes the output when useEMBEDSRC in eedata is true
838    o clean up 3-dim. relaxation codes:
839      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
840      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
841      * Thanks to Tom Haine for testing!
842    
843    checkpoint57z_post
844    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
845      affects output (@ truncation level) of exp. plume_on_slope ; updated.
846    o fix the pickup behavior for obcs in combination with ptracers
847    o fix a bug in ptracers_external_fields_load
848    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
849      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
850    o transfered surface NH pressure to eta field (if exactConserv).
851    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
852         and update lab_sea output.txt file.
853    o completing 3-dim. relaxation code: additional term
854         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
855      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
856      * At compile time, in "EXF_OPTIONS.h" set
857          #define  ALLOW_CLIMTEMP_RELAXATION
858          #define  ALLOW_CLIMSALT_RELAXATION
859      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
860          tauThetaClimRelax3Dim = 15552000.0,
861          tauSaltClimRelax3Dim  = 15552000.0,
862      * 3 cases:
863          1) Use a constant-in-time 3-dim. field
864          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
865          3) Real-time relax. to time-evolving prescribed field
866    o Adding Laplacian-type smoothness constraint on
867      initial and boundary (forcing) controls (ic, bc)
868      * enable at compile-time via
869        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
870      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
871      * Absolute scale somewhat unclear so far
872      * no area weighting was included since no other cost term does so far
873    
874    checkpoint57y_post
875    First step for a NLFS adjoint
876    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
877    o new init. routines for calc_r_star, calc_surf_dr
878    o still need to deal with ini_masks_etc
879    o testreport seemed happy
880    checkpoint57y_pre
881    
882    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
883    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
884    o add new offset feature to offline pkg (plus minor cleanup)
885    o cfc fixes for final year of integration
886    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
887      be in GCHEM_OPTIONS).
888    
889    checkpoint57x_post
890    o fix testreport Pb in multiple test experiment.
891    o cleanup our namelist syntax in verification:
892      - make it more F95 standards compliant (some work still needed)
893      - allows the vast majority of our tests to work with gfortran
894    o Non-Hydrostatic:
895     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
896     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
897    o Allow to apply AB on T,S rather than on AB(gT,gS):
898     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
899     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
900       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
901     - need a "clever" read_pickup to restart from the other AB formulation
902    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
903    o remove some unused variables (reduces number of compiler warnings)
904    o adjoint
905      * Disable useVariableViscosity for adjoint for time being
906        (there are a number of extensive recomputations)
907      * Initialize certain variables needed for adjoint
908    
909    checkpoint57w_post
910    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
911                 fix the singleCpuIO RS version of MDSWRITEFIELD
912       and add a WARNING if using globalFiles=T with multi-processors.
913    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
914      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
915    o tracer advection scheme:
916      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
917       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
918       was not very convenient).
919      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
920       (further tests needed for the implicit DST & Flux-Limiter schemes).
921    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
922      and sRef for convenience, handy, when you want to initialize
923      ptracers in a large domain with a constant non-zero value. Also,
924      untangle ptracers_init.F a little.
925    
926    checkpoint57v_post
927    o change dome exp. to use variable viscosity in side-drag terms.
928    o remove all the files from the cfc_offline test since they are now
929      incorporated into tutorial_cfc_offline which has been producing
930      identical results for a few days of testing
931    o add new parameter: sideDragFactor to enable half-slip-side BC
932      and change side-drag S/R to use viscosity from mom_calc_visc
933      (can switch back by setting sideDragFactor=0.); affects results at
934      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
935       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
936    o vorticity & strain are now computed without masking, to account for
937      no-slip-side BC in variable viscosity calculation ; mask is applied
938      anyway later on, before computing advection/coriolis terms.
939    o modify exp4 to test new obcs support for reading from external files
940      and for passive tracers
941    o fix behavior of ptracers_monitor when monitor output is written to a
942      netcdf-file; still not independent of monitor.F (writes in the same
943      file).
944    o change default value of tRef (put a uniform, meaningful value for ocean
945      & atmos) and initialize sRef (was missing, as Martin mentioned).
946    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
947      to be proportional to enstrophy dissipation length.  Thus,
948       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
949      This is now consistent with Smagorinsky and with the manual.
950    
951    checkpoint57u_post
952    o OBCS and PTRACERS: add open boundary support for passive tracers
953      - either use homogenous (pseudo) v.Neumann conditions or prescribe
954        OB-values from file; this is not different from the way theta and salinity
955        are treated
956      - however, Orlanski-radiation conditions are not supported, and the model
957        will stop if you use pTracers and Orlanski at the same time.
958      - beefed up the rountine obcs_external_fields_load: now only those open
959        boundary values are overwritten with values from files for which there
960        are really files, otherwise the OB-fields remain untouched. This makes
961        it possible to use different OBs at different ends of the domain (as
962        with EXF)
963    o reduce number of exch calls in shap_filt (s2).
964    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
965      truncation level) 4/5 MLAdjust test results (11&12 digits match).
966    
967    checkpoint57t_post
968    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
969    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
970      same truncation, independent of the face number: affects affects several
971      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
972    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
973      note that biharmonic viscosity + no-slip was not tested in any experiment.
974    o fix bug in non-linear free-surf side-drag ; generate new output for
975      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
976    o make mnc honor the writeBinaryPrec flag for most kinds of output
977    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
978    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
979      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
980    o add brackets in multi-terms sum to get same truncation, independent of
981      the face number (manage to get exactly same value of gU,gV at the cs-edge)
982      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
983    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
984      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
985      a maximum grid-scale Reynolds number.  Also, changes all length calculations
986      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
987      Suggested values of viscosity parameters found in mom_calc_visc.
988      Many new viscosity diagnostics available.
989    
990    checkpoint57s_post
991    o Add clearing-house for viscosity calculations, mom_calc_visc and
992      correct numerous bugs in LeithD and Smagorinsky discretizations.  
993      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
994      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
995      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
996      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
997      The Strain-Tension form is now called with useStrainTensonVisc=.true.
998      ViscAhStrain and viscAhTension are now retired.
999    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
1000    o In response to JMC's bug report, genmake2 now ignores any soft-links
1001      that it finds in the *current* directory when searching for files.
1002      Soft-links found in any other source directories will still work as
1003      they did before.
1004    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
1005      a C routine to unlimit the stack size
1006    o mnc-ify pkg/aim snapshot vars
1007    o mnc-ify pkg/land as requested by Daniel
1008    o various changes to mnc including:
1009      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
1010      - output can now be grouped so that all files within a group
1011          change the ITER portion of their names in lock-step together
1012      - can now read ("global") PER-FACE (in addition to PER-TILE) files
1013          and works with both EXCH1 and EXCH2 (but needs more testing)
1014      - writing works for all verification test cases w/ g77 on Linux
1015    
1016    checkpoint57r_post
1017    o make MNC variable initialization happen earlier
1018    o add diagnostics for (almost) each term of the momentum Eq.
1019    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
1020    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
1021    o remove MINIMAL_TAVE_OUTPUT option ;
1022      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
1023    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
1024      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
1025    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
1026    o add time-dependent SST, SSS control
1027    o cost terms in ecco/ modularized (new cost_generic.F)
1028    o cost_averages routines are modularized (new cost_averagesgeneric.F)
1029    o new infrastructure for seaice model vs. obs misfits in seaice/
1030      * driver from the_main_loop.F is seaice_cost_driver.F
1031      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
1032      * gradient check in Exp. 6a of natl_box_adjoint/
1033    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
1034      (see README file)
1035    
1036    checkpoint57q_post
1037    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
1038    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
1039      - bug was reported by Jean-Michel and Ian Fenty
1040    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
1041      update exp. cpl_aim+ocn output.
1042    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
1043      Needed for high-res. runs with large global files
1044      to be able to limit tapelev size
1045    o Changed some tests for adjoint:
1046      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
1047      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
1048      * global_ocean.90x40x15/ back to default 3-level checkpointing
1049    o Modifications to enable scripted COMMON to MODULE conversion
1050      * verification/OpenAD/code/ has necessary scripts and description;
1051      * converts, compiles and runs successfully;
1052    
1053    checkpoint57p_post
1054    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
1055    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
1056      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
1057    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
1058    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
1059      (was already the case for dissipation with mom_vecinv,
1060       and also the case for grad.PhiHyd when staggered-timeStep)
1061      This will allow to put dissipation out-off the AB time-stepping.
1062     Unfortunately, affects truncation error. Update output of exp. that "fails"
1063      (cg2d matching number) and leave the others for later: front_relax(10),
1064      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
1065      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
1066    
1067    checkpoint57o_post
1068    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
1069      (2) its ready to be documented during the 20050801 DocFest
1070    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
1071      for ideal_2D_oce and lab_sea on linux_ia32_g77
1072    o set to #undef CTRL_SET_OLD_MAXCVARS_30
1073      in global1x1_tot/code_seaice_adj to access indices 32, 33
1074      (worth another tag)
1075    
1076    checkpoint57n_post
1077    o adding precip control xx_precip 32
1078    o adding swflux control xx_swflux 33
1079    o Replacing 10 forcing penalty cost routines by 1 generic.
1080    o Implementing partitioning in time-mean and variable adjustment
1081      for atmos. state.
1082    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
1083    o in natl_box_adjoint:
1084      * updated exp 1 to 10
1085        (but does not have time-mean vs. variable split results yet)
1086    o updated global1x1/*_seaice_adj/
1087      to incorporate latest changes
1088    o enable useSingleCpuIO for mdsio vector routines
1089      (applies in particular to tapelev I/O)
1090    o removed inefficient K-loop in all active_file*control*.F
1091    
1092    checkpoint57m_post
1093    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
1094      and advect_cs (use EXCH-2 and standard cs-32 grid files).
1095    o pkg/exch2: filling of face-corner halo regions is optional
1096      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
1097    
1098    checkpoint57l_post
1099     tag before updating tutorials (pre-release-2)
1100    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
1101       for output and interpolation of input fields onto model grid)
1102    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
1103       Affects results of exp. rotating_tank ; update output.txt.
1104    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
1105          and taking the square quantity and/or using a fraction-weight field.
1106    o fix aim_diagnostics_init.F mate numbers.
1107    o add mnc output capability to diagnostics/diagstat and update
1108      our cvsignore files for the ACSII output generated
1109    
1110    checkpoint57k_post
1111    o lab_sea now uses diagnostics package and provides a suite of
1112      new EXF diagnostics output.
1113    
1114    checkpoint57j_post
1115    o exf
1116      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
1117        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
1118        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
1119      * extended diagnostics output
1120        - now includes all EXF variables
1121        - hs, hl moved to common block
1122        - separate S/R for diagnostics, called after ctrl vector is added
1123        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
1124        - EXFqnet contains true Qnet (i.e. includes qsw)
1125      * updated verif. lab_sea, global_with_exf
1126      * Rearranging hflux (exf_mapfields -> exf_getforcing)
1127        to ensure that diagnostics sees a true EXFqnet
1128    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
1129    o diagnostics pkg: change pointers so that 1 diagnostic can be used
1130      several times with different frequencies.
1131    o mnc-ify the thsice package as requested by Daniel Enderton
1132      - the monitor--MNC output needs work
1133      - many attributes need to be added (most are currently blank)
1134    o mnc-ify theaim_v23 package as requested by Daniel Enderton
1135      - many attributes need to be added (most are currently blank)
1136    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
1137    o add Sadourny like discretization to the 4th.O vorticity advection scheme
1138    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
1139      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
1140         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
1141    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
1142     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
1143    
1144    checkpoint57i_post
1145    o Diagnostics package was changed: diagnostic allocation is now deactivated
1146      by setting an empty file name in the namelist (used to be by setting 0 frequency)
1147    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
1148      add 1rst Order upwind vertical Shear.
1149    o add a quick fix for A/B checkpointing in OFFLINE mode
1150    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
1151      end-run around the C/Fortran linking horror in eesup/src/timers.F
1152    o added pkg/runclock: allows user to terminate run based on wall clock
1153    o added non-hydrostatic scaling parameter: nh_am2
1154    o pkg/my82: futile attempt to make results compiler-independent by adding
1155      some "_d 0", etc. no effect.
1156    o for mnc output, fill the 'T' coordinate var with myTime and create a
1157      separate 'iter' variable for iteration count
1158    o pkg/diagnostics:
1159      add new capability: output of Global/Regional & per-level statistics ;
1160      tested against monitor output (including land & thSIce) on various exp.
1161    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
1162    
1163    checkpoint57h_done
1164      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
1165      data.diagnostics, data.gchem, data.ptracers) is done.
1166    
1167    o pkg/diagnostics: prepare for Global/Regional statistics.
1168      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
1169    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
1170      and rename it: DIFFERENT_MULTIPLE
1171    
1172    checkpoint57h_post
1173    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
1174    o pkg/diagnostics: change output frequency, now in seconds (instead
1175      of Nb of iterations). This requires to change data.diagnostics.
1176    checkpoint57h_pre
1177    
1178    o in mnc, let the user create the output dir if both mnc_outdir_date
1179      and mnc_outdir_num are false
1180    o add fflags() to pkg/diagnostics which allows one to specify, on a
1181      per-file basis, the file precision [default behavior is unchanged]
1182    o added diagnostics to pkg/kpp, including computation of mixed layer
1183      depth based on a temperature/density criterion
1184    o updated verification/natl_box to test the new pkg/kpp diagnostics
1185    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
1186    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
1187    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
1188      not mnc -- this mistake was found by JMC and is now corrected
1189    
1190    checkpoint57g_post
1191    o add Adams-Bashforth 3rd Order time stepping:
1192      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
1193      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
1194    checkpoint57g_pre
1195    
1196    o make lambda[Theta,Salt]ClimRelax spatially varying
1197      (default remains spatially uniform constant based on tau)
1198    o added new control variables
1199      * init. uVel, vVel, etanN
1200      * lambda[Theta,Salt]ClimRelax
1201    o separate masks used for ctrl_pack/unpack 'from write_grid' output
1202      (suggested by G. Forget)
1203    
1204    checkpoint57f_post
1205    o add parameter "baseTime" = model base time = time at iteration zero
1206      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
1207      account for baseTime shift
1208    o move Coriolis arrays from PARAMS.h to GRID.h
1209    checkpoint57f_pre
1210    
1211    o mnc-ifying the seaice package
1212    o introduced an alternative length scale calculation for use in the limiting
1213      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
1214    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
1215    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
1216      as well as grad(vort3).  Made it compatible with both approximate form
1217      for the cubed sphere and full form of these gradients.  Added flag
1218      useFullLeith to select between approximate and full form.  
1219    o add "d0" in getcon.F to reduce differences between compilers/platforms
1220      update output.txt of exp. fizhi-gridalt-hs
1221    o change port_rand funtion to allow to set the seed.
1222    o fix obscure MNC bug involving conversion between reals and integers
1223      - it caused no problems with certain (eg. gcc, ifc) compilers but the
1224        new version is now more standards-compliant
1225    o adjoint-related modifications
1226      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
1227      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
1228      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
1229    
1230    checkpoint57e_post
1231    o Adding eddy stress controls a la Ferreira et al.
1232    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
1233    
1234    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
1235      update output.txt of exp. fizhi-gridalt-hs
1236    o add more "Z" dimensions and associated coordinate vars to MNC
1237    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
1238    o parameter calendarDumps: when set, approximate months (30-31 days) and years
1239      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
1240      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
1241      months and years.  Requires pkg/cal.
1242    o diagnostics: add pickup functionality
1243      - off by default for backwards compatibility
1244      - current version only uses MDSIO -- MNC will be added
1245    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
1246    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
1247    
1248    checkpoint57d_post
1249    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
1250    o modify verification/ideal_2D_oce so that it tests the creation of mnc
1251      output from the diagnostics package
1252    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
1253    o make genmake2 more portable by using ".$FS" instead of ".f" for more
1254      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
1255    o add coordinate variables to the MNC output from the diagnostics package
1256    o change MNC-flags default value: true when useMNC=TRUE
1257    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
1258      the ability (off by default) to read the grid information using MNC
1259    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
1260    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
1261    o do snap-shot diagnostics at the middle of the time-interval (instead of
1262      at the end).
1263    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
1264      new test for AIM with thSIce + slab-ocean
1265    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
1266    o move state variable diagnostics to the beginning of the time step ;
1267      (note: still needs some work specially for snap-shot diagnostics)
1268      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
1269    
1270    checkpoint57c_post
1271    o Change testing option (-ieee) to get closer agreement between g77 & ifort
1272    o generate new output.txt files on faulks with g77 & the new -ieee option
1273    checkpoint57c_pre
1274    
1275    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
1276      update output.txt of exp. global_ocean.90x40x15
1277    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
1278      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
1279    o add saltFlux(+File) forcing capability with periodicExternalForcing
1280    o allow to use pkg diagnostics for GM-Redi & ThSIce output
1281    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
1282    o improvements for the MNC output from DIAGNOSTICS:
1283      - correct handling of the unlimitied dimension
1284      - all dims now have associated coordinate variables
1285      - variables located at U, V, and Corner ("Z") points are now written
1286        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
1287        *all* data points are output
1288    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
1289    o added pkg/seaice/seaice_monitor.F
1290    o mdsio_readfield.F can now read files visible only to master MPI process.
1291    o pkg/seaice: some test code for ice-modified ocean stress
1292    o exf_getffields interpolation defaults to bilinear for all scalar forcing
1293      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
1294      spurious negative numbers for precipitation and humidity.  Will cause
1295      some small numerical differences for integrations using pkg/exf/exf_interp.F.
1296    o pkg/ctrl/
1297      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
1298        May be enabled via doPackDiag
1299      *  introduce z-scaling of
1300         + gradient (doZscalePack) and
1301         + control (doZscaleUnpack)
1302    o pkg/mdsio/
1303      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
1304      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
1305    
1306    checkpoint57b_post
1307    o simplify options in diagnostics_fill arguments (remove weird combinations)
1308    o fix MNC coordinate variables so that they now contain per-face index
1309      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
1310      general, EXCH2 grids are only aligned to a "local" coordinate system
1311    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
1312    o Implement instantaneous output within pkg diagnostics:
1313      setting a negative frequency in data.diagnostics produces
1314     "snap-shot" output (as opposed to time-average if freq > 0)
1315    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
1316      NOTE: change ptracer diagnostics name: use 2 characters to work with
1317            more than 9 tracers. Add also diagnostics of advect & diffus flux.
1318    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
1319      becomes the coordinate variable for the 'T' dimension
1320    o add CF-style coordinate variables to MNC
1321      - just a first cut:  numbers are meaningless on the cubesphere and
1322        missing along the T axis but otherwise it works!
1323    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
1324    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
1325    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
1326      this is based directly on what the model compute, so that the content of
1327      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
1328    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
1329    o clean up build options files for SunOS, in particular
1330      - remove -traditional from xmakedepend
1331      - change -xarch=v9 to -xarch=native for f77
1332      - restore use of make (not gmake)
1333      - add CC=gcc if using g77
1334    o changes per discussion of AM, JMC, & EH3 today:
1335      - move redundant "grid" variables out of "state" -- in preparation of
1336        creating proper CF-style coordinate variables and in recognition
1337        that any/all grid variables can be easily copied (eg. w/NCO) from
1338        the grid files into any of the other NetCDF files
1339      - *always* output grid variables with MDSIO (this will eventually be
1340        changed)
1341      - output MNC grid file if useMNC is true
1342    o every instance of _END_MASTER() has been found and replaced with
1343      _END_MASTER( myThid ) in order to satisfy certain picky Sun
1344      preprocessors
1345    o re-arrange diagnostics pkg initialisation:
1346     - allow each package to extend the available diagnostics list
1347     - add some checking and fix small problems (multi-threaded, ...)
1348     - new S/R diagnostics_fill (replace fill_diagnostics):
1349       look through the short list of active diag. (instead of the long list)
1350       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
1351    
1352    checkpoint57a_post
1353    o this set of changes restores TAMC compatibility
1354      tested for global_ocean.90x40x15 adjoint on trough
1355      (what a pain)
1356    
1357    checkpoint57a_pre
1358    o some modifs in tools/build_options for sunos
1359    o call ctrl_pack for ctrl at end for optimcycle=0
1360    
1361    checkpoint57
1362    o add horizontal bi-harmonic viscosity for vertical velocity
1363      - new parameter viscA4W (defaults to viscA4)
1364      - affects only non-hydrostatic code
1365      - to be done: no-slip lateral boundary conditions
1366    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
1367    o implement Implicit Vertical advection for pTracers
1368    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
1369      (implemented also for implicit vertical diffusion & advection)
1370    o OBCS: extend application of tracer open boundary conditions
1371      to a strip beyond the boundary of width Olx/Oly
1372    o add call monitor to TAF set of required calls (flow directives)
1373      and include in natl_box_adjoint
1374    o untangle a few ifdefs related to cost, ctrl, autodiff
1375      untangel a few ALLOW_ECCO_OPTIMIZATION
1376    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
1377      (theta2, salt2 in ecco_cost_weights)
1378    
1379    checkpoint56c_post
1380    o OBCS as control variables
1381      - update ctrl_ad_diff.list, obcs_ad_diff.list
1382      - remove balance of obcs controls from default
1383      - fix index bug nobcs in ctrl_init
1384      - fix dummy fields filen in ctrl_pack
1385      - add dummy weights for obcs
1386    o lsopt: comment out fort.94 output
1387    o optim:
1388      - remove unnecessary header files
1389      - adjusted namelists
1390      - add xerbla.F to Makefile
1391    o exf:
1392      - multiple modifications of exf_check_range
1393      - unit change in exf_init_runoff from [m/year] to [m/s]
1394    o mdsio:
1395      - i/o-vector change debugLevel from debLevA to debLevB
1396    
1397    checkpoint56b_post
1398    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
1399      is called from DO_THE_MODEL_IO
1400      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
1401      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
1402      - clean up PTRACERS_WRITE_TIMEAVE a little
1403    o add another verification experiment that tests both the cfc-pkg and
1404      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
1405      reactive tendencies treated inline with regular timestepping
1406    o testreport previously did a lousy job of comparing small numbers, so
1407      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
1408      implemented in the little c-progam tmp_cmpnum.c which is embedded in
1409      testreport.
1410    o ptracers_monitor: bug fix for MPI
1411    
1412    checkpoint56a_post
1413    o GCHEM: finish reorganizating the package
1414      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
1415        (introduces another 3D-array for each passive tracer, but only if
1416        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
1417        gchemTendency is not needed because the timestep is done separately)
1418      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
1419      - GCHEM is now---more or less cleanly---separate from PTRACERS
1420      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
1421        so clear to me how that should be done in a general way.
1422    o CFC: improve formatting of output in CFC_ATMOS
1423    o PTRACERS:
1424      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
1425        that ALL experiments with ptracers enable can be checked. This makes
1426        GCHEM_MONITOR obsolete.
1427      - include a runtime parameter PTRACERS_monitorFreq that defaults to
1428        monitorFreq
1429      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
1430    o add PTRACERS (PTR0[1-5]) to testreport output
1431    o exf_check_range:
1432      * default changed to .TRUE.
1433      * will check values for niter0 if debLevA, every timestep if debLevB
1434      * STOP in exf_check_range if 'out of range'
1435      * range chosen generous to allow for potential extema
1436      TBD: a version with stricter range
1437           permitted range would be runtime parameters
1438    o GMredi:
1439      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
1440      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
1441      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
1442    o GCHEM:
1443      - move call to GCHEM_FORCING_SEP, so that it is now called before
1444        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
1445      - introduced a useGCHEM runtime flag and applied it everywhere.
1446      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
1447        this flag is now only visible within GCHEM-pkg routines.
1448      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
1449        be replaced by a 3D array that is computed before thermodynamics; for
1450        this, the tracer ID iTracer had to be included into the parameter list
1451        of ptracers_forcing
1452      - set up forward_step to call gchem_forcing, that will replace
1453        gchem_forcing_int in ptracers_forcing
1454      - cleaning up
1455    o small cleaning of exch2: remove files that are also in eesupp/src
1456    
1457    checkpoint56
1458    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
1459    o mnc: cleanup "full" files--fixes out-of-memory problem
1460    o ECCO-GODAE
1461      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
1462      * fully merged and updated from SIO code
1463        windstress sign change affects
1464        - exf_inscal_[u/v]stress
1465        - sign of xx_tau[u/v] adjustments
1466        - signs in cost_scat
1467      * ctrl_get_gen: avoid update of tau[u/v] for first few days
1468      * natl_box_adjoint updated and compressed
1469      * 2-level checkpoint switch added
1470        (tested in EXP. 1 of natl_box_adjoint)
1471      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
1472    o SVD
1473      * first complete, non-hacked version for SVD calculations
1474      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
1475        performed via direct access files admtlm_vector.it????
1476        (via ctrl_[un]pack)
1477      * optimcycle is used for ARPACK iteration counter
1478        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
1479      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
1480        and add linear transforms where necessary
1481      * controls are initial/final SST, SSS (can be extended; need to check
1482        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
1483    o mdsio: filename info to both stderr, stdout
1484    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
1485      from sign change
1486    
1487    checkpoint55j_post
1488    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
1489      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1490    o add consistent build directories and .cvsignore files to verification
1491    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
1492    o make all subroutines 30 or less characters in length for certain older
1493      compilers to work (a thorough search only turns up two routines in
1494      pkg/ptracers)
1495    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
1496      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1497    
1498    checkpoint55i_post
1499    o change arrays for total vertical diffusivity (2.D if explicit,
1500      3.D if implicit) ; each ptracer uses its own background value.
1501    o added mnc/NetCDF output capability to ocn_compon_interf
1502      - added bits to verification/cpl_aim+ocn so that it can run on
1503        ITRDA and other clusters without the mpirun "-wd" option
1504    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
1505      configuration
1506    o give MNC the ability to create additional files rather than
1507      exceeding a specified file size limit "MNC_MAX_FILESIZE"
1508      - the default is just less than 2GB which is a practical limit
1509        on many systems
1510    o Compute the non-local term using either KPP vertical diffusivity (=default)
1511       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
1512    
1513    checkpoint55h_post
1514    o add verification test "vermix"
1515    o remove all the *_ioinc flags and replace with the single global
1516      outputTypesInclusive flag
1517    o allow to set a vertical profile of vertical diffusivity for T & S
1518    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
1519    o useMNC moved from data.mnc to data.pkg
1520    
1521    checkpoint55g_post
1522    o Renaming carbon AD experiments to comply with testreport conventions
1523    o Updating adjoint of Held-Suarez hs94.1x64x5
1524    o Fixing directives for non-ECCO forward_step, after ECCO directives
1525      have been fixed to avoid recomp. of do_oceanic_phys
1526      Works well for global_ocean.90x40x15,
1527      but recomp. issue remains for carbon
1528    o Updating adjoint output for natl_box_adjoint after
1529      pkg/ecco has been modified (see taga c55d_post)
1530    
1531    checkpoint55f_post
1532    o rename to timeave_init_fixed
1533    
1534    checkpoint55e_post
1535    o some delicate re-shuffle of store directives to avoid one
1536      extra call of do_oceanic_physics
1537      affects ecco_the_main_loop.F, do_oceanic_physics.F
1538      checkpoint_lev1_directives.h
1539    o NB: this may break global_ocean adjoint temporarily,
1540      but it is clear how to fix it. Will do later, need this now.
1541    
1542    checkpoint55d_post
1543    o ECCO specific cost function terms (up-to-date with 1x1 runs)
1544    o ecco_cost_weights is modified to 1x1 runs
1545    o modifs to allow observations to be read in as
1546      single file or yearly files
1547    o enable to read exf forcing fields as either
1548      single file or yearly files (flag useExfYearlyFields)
1549    checkpoint55d_pre
1550    
1551    o switch between 2-level and 3-level checkpointing
1552    o add ability of MNC to write local and "partial" (eg. 2D slices where
1553      the full 3D field is never actually stored) arrays to NetCDF files
1554      with the correct (that is, the complete multi-dimensional) set of
1555      array indicies
1556      - used in mom_vecinv() to write the diagFreq output
1557      - tested (demonstrated) in verification/aim.5l_cs
1558    o further mnc-ification
1559      - add verification/lab_sea to the list with mnc setups
1560      - fix undefined mnc v-names in cd_code
1561      - add kpp to mnc output (both snapshot and timeave)
1562    o non-hydrostatic code
1563      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
1564        in calc_gw.F
1565      - defaults to viscAh
1566      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
1567        friction or Leith) in non-hydrostatic mode, as long as there is
1568        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
1569    o pkg/cost
1570      extend simple cost functions to treat time mean quantities
1571      (T,U,V) via cost_accumulate_state from cost_tile
1572    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
1573        be 2 times larger than the minimum size the advection scheme requires.
1574        now get a perfect conservation of salt in advect_cs test-exp (updated)
1575    o GGL90 (Gaspar's TKE mixed layer)
1576      - add horizontal diffusion of TKE, requires exchanges in
1577        do_fields_blocking_exchanges, horizontal diffusivity is zero by
1578        default. In OPA there is no horizontal diffusion of TKE but the
1579        mixing coefficients are computed from a horizontal average of TKE of
1580        6 points or so. I think that diffusion has a little more physical
1581        justification.
1582      - clean up ggl90_calc in the hope of reducing memory usage (this hope
1583        was in vain)
1584      - mask tke-variable in ggl90_init
1585    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
1586    o fix biharmonic diffusion on CS-grid.
1587    o more obcs stuff
1588      - added obcs_external_fields_load as an alternative to the EXF-pkg option
1589        for reading boundary values. This routine is called from
1590        obcs_prescribe_read
1591      - updated obcs_check
1592      - changed sponge layer relaxation parameter units for days to seconds
1593      - turned off sponge layer by default
1594      - changed argument list of OBCS_CALC to myTime+deltaTclock
1595      - fixed about 35 bugs in obcs_external_fields_load
1596    
1597    checkpoint55c_post
1598    o obcs stuff
1599      - new runtime flags useOBCSprescribe, useOBCSbalance
1600      - re-arranged obcs_calc
1601      - moved exf_getobcs to obcs_prescibe_read
1602        obcs_prescibe_read is called after ORLANSKI stuff
1603        and independent of it (executable can contain all).
1604      - updated obcs_check
1605      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
1606        These may be necessary only if tangential velocities are
1607        prescribed at OB, not sure, needs testing.
1608    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
1609      which simplifies the calls and passes the ifc check-bounds test
1610    
1611    checkpoint55b_post
1612    o add a 2D scalar, Z location, exchange_2 routine.
1613    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
1614      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
1615      affects advect_cs results (for the wrong reason): update output.txt
1616    o use a more standard discretization for biharmonic viscosity ;
1617     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
1618      affects results of dome set-up: update output.txt
1619    o fix gad_advection.F (CubedSphere part), back to version 1.23
1620    o fix bug in mom_vi_del2uv.F (CubedSphere part).
1621    
1622    checkpoint55a_post
1623    o merged code to
1624      * prescribe/read time-dependent open boundaries
1625        (works in conjunction with exf, cal)
1626      * sponge layer code for open boundaries
1627      * each boundary N/S/E/W now has its own CPP option
1628        (healthy for the adjoint)
1629    
1630    checkpoint55
1631    o up-to-date adjoint of previous breaks
1632      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
1633      - global_ocean_ebm: adjoint still needs fix (TLM ok)
1634      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
1635      - carbon: * remove tr1-related adjoint verification
1636                * add ptracer as control variable
1637    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
1638      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
1639    
1640    checkpoint54f_post
1641    o in verification/carbin/ remove experiment related to
1642      ALLOW_PASSIVE_TRACER (array tr1 etc)
1643      code_ad/ input_ad/ results_ad
1644    
1645    o add two new packages
1646      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
1647        + subject to optimization (memory)
1648      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
1649        + subject to reordering (many GOTOs in the original code)
1650        + so far opps is called for every (i,j) point, and then operates in
1651          the vertical; one may want to reorder the scheme in order operate in
1652          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
1653          fields)
1654    o overhaul of IO so that we now have flags for MDSIO and/or MNC
1655      - all verification tests compile and run with linux_ia32_g77
1656      - defaults are compatible with current input files--nothing
1657        should change if you were not previously using MNC
1658      - MNC output has been added in numerous places (eg. timeave)
1659        but there are still a few writes not yet do-able with MNC
1660        (this is in progress)
1661      - flags now allow for either/or/both use of MDSIO and MNC and
1662        documentation will soon follow
1663      - numerous small formatting cleanups for ProTeX
1664    o add version info (via BUILD_INFO.h) to MNC and stdout
1665    
1666    checkpoint54e_post
1667    o add two new packages
1668      - pp81 (Packanowski and Philander, 1981), Richardson number and
1669        stratification dependent mixing
1670      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
1671      - these scheme operate in a similar manner as KPP (without ghat, of
1672        course), however there is only one diffusivity that is used for both
1673        temperature and salinity (and passive tracers)ç
1674    o add offline package
1675    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
1676      provided by Stephanie Dutkiewicz
1677    o genmake2: add ability to search for C compilers and cleanup test output
1678      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
1679    
1680    checkpoint54d_post
1681    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
1682    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
1683      leading to additional shift by 5 days each year of integration
1684       (i.e. leading to considerable offset over the years)
1685    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
1686    o start with no AB and no initial filtering (staggerTimeStep):
1687      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
1688    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
1689      (external loading & cpl import/export stay in forward_step.F)
1690    o update coupling interface to work with new staggerTimeStep
1691    o change MDSIO ptracers_pickup.
1692    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
1693    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
1694    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
1695    
1696    checkpoint54c_post
1697    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
1698      this affects (truncation error) output.txt of test-exp:
1699       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
1700    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
1701    o change Qnet to always be the net heat flux, (+upward).
1702      affects (truncation error) output of natl_box exp.: updated
1703    o define the max number of passive tracers in PTRACERS_SIZE.h
1704    o start to test mnc routinely in exp0
1705    o add sea-ice loading (sIceLoad) as a new forcing field.
1706    
1707    checkpoint54b_post
1708    o add testreport "-j JOBS" option for parallel builds (tested and pretty
1709       impressive on Altix and Opteron systems)
1710    o diagnostics can now write NetCDF files through the mnc package
1711    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
1712    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
1713    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
1714      affects (truncation error) output of lab_sea & natl_box exp.: updated
1715    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
1716    
1717    checkpoint54a_post
1718    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
1719    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
1720    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
1721    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
1722      + internal_wave (shift in writing cg2d_ini_res)
1723    checkpoint54a_pre
1724    
1725    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
1726      - modified verification/lab_sea and natl_box_adjoint accordingly
1727    
1728    checkpoint54
1729    checkpoint53g_post
1730    o prepare splitting of thermodynamics: store convect.counter in common block
1731    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
1732      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
1733    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
1734    o new parameter "nShapS": allow to treat differently S from T (nShapT)
1735    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
1736    o restore adjointability
1737    
1738    checkpoint53f_post
1739    o modifications that affect AIM experiment results (update output.txt):
1740      - no advection of S at top interface Nr (pkg/generic_advdiff)
1741      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
1742    o AIM pkg:
1743      - include stability function into surf.Flux derivative relative to Tsurf
1744      - calculate clear-sky radiation & surface temp. change (for diagnostics)
1745    
1746    checkpoint53e_post
1747    o merged cylindrical coord configuration
1748    o added rotating_tank experiment
1749    checkpoint53e_pre
1750    
1751    checkpoint53d_post
1752    o faulks upgraded: re-generate output.txt that have changed:
1753       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
1754    o Added Bryan and Lewis, 1979, vertical diffusivity profile
1755    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
1756    o added Sadourny discretization of Coriolis
1757      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
1758      - re-enabled use of omega3 (useAbsVorticity)
1759    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
1760      vector-invariant equations
1761      - note: does *NOT* yet use same variable visc. for no-slip BC's.
1762    o recoded the lateral boundary conditions for non-hydrostatic w, this time
1763      hopefully without new bugs
1764      - still to do: biharmonic friction for non-hydrostatic w
1765    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
1766    o regenerated output for global_ocean_ebm (using -ieee)
1767    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
1768      of mom_common/
1769      - simple re-arrangement of instructions within computing loop
1770    checkpoint53d_pre
1771    
1772    checkpoint53c_post
1773    o new version of coupler for AIM+thSIce and Ocean models
1774     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
1775     - land: change Evaporation of snow
1776     - aim with thSIce: fix bug in snow-precip.
1777    o changes to calc_gw.F
1778     - bug fix for w^2 term near the bottom boundary
1779     - (hopefully) improve the lateral slip boundary condtions for use with
1780        partial/looped cells
1781      - because the bug fix changes two verification experiments anyway (exp5
1782        and plume on slope), change the lateral boundary condition from half slip
1783        to the value of no_slip_sides
1784    o ebm package wasnt quite up to the parallel task. Fixed that.
1785    o Adjoint of EBM package + verification
1786      * TLM OK
1787      * ADM not sufficient accuracy yet (needs further testing)
1788    
1789    checkpoint53b_post
1790    o Commiting new energy balance model to repository
1791      * package is pkg/ebm
1792      * verif. is verification/global_ocean_ebm
1793      * references are in ebm_driver.F
1794    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1795    C        Global thermohaline circulation. Part I:
1796    C        Sensitivity to atmospheric moisture transport.
1797    C        J. Climate 12(1), 71-82
1798    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1799    C        Global thermohaline circulation. Part II:
1800    C        Sensitivity with interactive transport.
1801    C        J. Climate 12(1), 83-91
1802    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
1803    C        Destabilization of the thermohaline circulation
1804    C        by atmospheric eddy transports.
1805    C        J. Climate 7(12), 1870-1882
1806    o Will need long integration testing.
1807    checkpoint53b_pre
1808    
1809    o created pkg/mom_common in preparation for variable viscosity code
1810    o renamed and split ini_mnc_io
1811    o pkg/land: only liquid water can diffuse or run-off
1812    o AIM using land: soil wetness availability account for snow
1813    o added printMapIncludesZeros to EEPARMS namelist
1814    
1815    checkpoint53a_post
1816    o restore TAMC compatiility for exf_constants.h
1817      (no usage of _d in .h)
1818    o Additional storing in KPP in an attempt to fix
1819      TAMC problem with adjoint of KPP code.
1820      (no success...)
1821      Identical code works fine with TAF.
1822    o Fixed verification/natl_box_adjoint experiments.
1823      Initial conditions for Experiments 4 and 5 are now
1824      set to "SEAICE_initialHEFF=0", which is more reasonable,
1825      and hence gives results closer to that of Experiment 2.
1826      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
1827    
1828    checkpoint53
1829    o stable checkpoint with up to date adjoint
1830      TLM tests only run for 1st grdchk at the moment. Its unclear if
1831      this is a code problem or a problem with resetting code for g_
1832      variables that is being autogenerated wrong.
1833      Otherwise:
1834       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
1835       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
1836         are both still in chaos following their security messes.
1837    
1838    checkpoint52n_post
1839    o various build (mostly genmake2) changes including:
1840      - ability to build/run more easily within Cygwin and MacOS X
1841      - more complicated Makefiles with a stronger dependence on Gnu Make
1842    o pkg/seaice modifications
1843      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
1844        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
1845        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
1846      - changed proxy for geostrophic velocity and updated
1847        verification/lab_sea/results/* accordingly
1848      - removed ADI dynamic solver from pkg/seaice
1849      - replaced all occurrences of 1/CSTICE or 1/CSUICE
1850        they caused a segmentation fault under certain circumstances
1851      - removed unused field WATR
1852    o bug fix in exf-package:
1853      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
1854         now reflect that.
1855    o small fixes in the cal-package:
1856      - set reference date to first of January for the 'model'-calendar
1857      - failing of cal_CheckDate in cal_FullDate now actually results in a
1858        warning
1859    o small modifications in exf-package to increase flexibility:
1860      - change climtempfreeze from a constant to a runtime parameter that
1861        is specified in data.exf_clim (default = -1.9)
1862      - introduce runtime parameter windstressmax (default = 2.0) that is
1863        specified in data.exf
1864    o fix in pkg/thsice:
1865      - update Evap (Tsf changes) to be consistent with Latent heat flux
1866      - maintain snow precipitation unchanged (even if Tsf >=0).
1867     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
1868    
1869    checkpoint52m_post
1870    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
1871      this does not change any of the results, because myIter=0 in swfrac always
1872      lead to jwtype=2 (the default anyway), but the call makes little sense
1873      as a default
1874    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
1875    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
1876      atmospheric model (AIM) to use it ; add a "slab ocean" component.
1877    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
1878    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
1879    o extending useSingleCpuIO option to work with new exch2 I/O format
1880      - old-style, missing-tile I/O is still accessible by defining CPP
1881        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
1882    o monitor package can write to NetCDF files and/or STDOUT
1883    o fix re-definition bug in MNC_GRID_INIT_ALL()
1884    o doc/api_reference added
1885      - a framework for building an API Reference Manual using all
1886        the "protex" comments embedded in the code
1887      - see pkg/generic_advdiff, pkg/mnc for examples
1888    o MNC:
1889      - make myThid the last argument for all subroutines
1890      - new default for the grid files: NO halos
1891      - add useMNC and other run-time flags
1892      - separate per-file-group handling of the unlimited dimension
1893      - early initialization of MNC w/ flags read at the eeboot stage
1894        and lookup tables set in initialize_fixed
1895      - write all MNC output to a freshly-created directory
1896    o thermodynamics sea-ice (thsice) is now tested with testreport.
1897    o test exp. advect_cs: use the standard cs32 grid ; update output.
1898    o Added functionality to grdchk:
1899      pick global i,j,k position (or nearest wet) where to perform check.
1900    
1901    checkpoint52l_post
1902    o new land formulation:
1903      a) use ground enthalpy as prognostic variable to ensure exact
1904         energy conservation.
1905      b) account for water temperature and for latent heat of freezing
1906         in all processes (rain, run-off, ground storage)
1907      c) compute surface and ground temperature implicitly.
1908    o aim_v23 modification for new land model:
1909      a) Treat separately land / ocean / sea-ice surface fluxes
1910         to allow implicit computation of land & sea-ice surface temp.
1911      b) add snow precipitation.
1912    checkpoint52l_pre
1913    
1914    o fix problem (when 1 tile is empty) in min/max monitor.
1915    o fix bug in timeAve (u,vZetatave in common block)
1916    o no restoring terms under ice for pkg/seaice
1917    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
1918    o bug fix for pkg/seaice pickups
1919    o change MNC call locations and add coordinate attributes
1920    o mask vorticity at the corner ; affects global_ocean.cs output
1921    o fix ini_curvilinear_grid ; test CS experiments with mpi
1922    o aim.5l_cs: modify sea-ice fraction input file ; update output
1923    o exf: Adding simple range check routine for exf fields after read
1924    
1925    checkpoint52k_post
1926    o removed top-level directory "diags"
1927      - we migrated these functions to pkg/timeave a long time ago
1928    o fixed bug introduced in pkg/monitor
1929    o accuracy ctrlprec = 32 insuffient for gradient checks using
1930      averaged fields (I/O via cost_averages)
1931      -> use ctrl.h in active_file*.F to control I/O precision.
1932    o paramter list of CALL ADTHE_MAIN_LOOP
1933    o added initial do_the_model_io to ecco
1934    o set all ...Freq to zero after cost_final
1935      taveFreq, dumpFreq, pChkptFreq
1936    o MAIN and ECCO differentiability restored
1937    
1938    checkpoint52j_post
1939    o fix nchklev in tamc.h for global_ocean...
1940    o Bringing flow and store directives up-to-date
1941    o Really weird thing!
1942      call do_the_model_io from the_main_loop with parameters
1943      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
1944      TAF places a faulty re-call of initialise_varia
1945      after cost_final call which should not be there!
1946    checkpoint52j_pre
1947    
1948    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
1949      error messages
1950    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
1951    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
1952      debug output
1953    o modfied mdsio_writefield.F to handle non-global files under exch2
1954    o update AIM Cubed-Sphere exp (aim.5l_cs):
1955      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
1956    o update AIM Equatorial Channel exp:
1957      use standard aim_v23 pkg and change the SST fields to be more realistic.
1958    o globalFile now works with exch2
1959    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
1960      mon_vort3.F to make exch2 friendly with >1 tile per cube face
1961    o limit timeave output for hi-res integrations
1962    
1963    checkpoint52i_post
1964    o removed CPP_EEOPTIONS.h from verification/*/code
1965    o updated the tiling for global_ocean_pressure
1966    checkpoint52i_pre
1967    
1968    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
1969      the old pkg/aim).
1970    
1971    checkpoint52h_pre
1972    o shortened offending lines in exch2_send_rx?.template
1973    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
1974    o genmake2: add build & execute test for NetCDF code
1975    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
1976      old grid files, moved CPP_EEMACROS.h to pkg/exch2
1977    o added useSingleCPUIO flag to monitor.F and mon_out.F
1978    o added temporary hack for sea-ice dynamics on the cube:
1979      metric terms are ignored and it is assumed that
1980      there is no sea-ice on cube faces 1, 2, 4, and 5.
1981    
1982    checkpoint52f_post
1983    o added exch2 cube routines to pkg/exch2
1984    o modified hs94.cs-32x32x5 to use it
1985    o added new grid files to hs94.cs-32x32x5
1986    checkpoint52f_pre
1987    
1988    checkpoint52e_post
1989    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
1990      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
1991    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
1992      to work with implicit vertical advection and AB ;
1993    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
1994    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
1995     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
1996    checkpoint52e_pre
1997    
1998    o fix bug in impldiff when Nr=1 or Nr=2.
1999    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
2000    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
2001    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
2002      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
2003    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
2004    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
2005    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
2006    
2007    checkpoint52d_post
2008    o re-tiled many expts to allow comparison in multi-processor mode
2009      - updated output accordingly
2010      - changed hs94.128x64x5 to use intial T from file rather than use the
2011        random number generator
2012    o add infrastructure in model routines for fizhi and gridalt packages
2013    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
2014    o changes to permit hi-res, cubed-sphere, configuration
2015      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
2016      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
2017      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
2018        of surface winds for the cube
2019      (A verification experiment, based on global_ocean.cs32x15, but with
2020       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
2021       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
2022       complete with example surface forcing files and matlab scripts to look
2023       at the output and compare it with that of global_ocean.cs32x15.)
2024    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
2025       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
2026       to conform to the common rule.
2027    o check-in the first version of the coupler + interfaces for multi-components
2028       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
2029       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
2030       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
2031       - ocean and atmos. share the same horizontal grid (no interpolation).
2032       - exchanges between component and coupler is done in forward_step
2033    o new verification experiment, cpl_aim+ocn:
2034       coupled ocean - AIM atmosphere on cs32 grid.
2035    
2036    checkpoint52d_pre
2037    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
2038    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
2039    
2040    checkpoint52c_post
2041    o Fixing OPTIONS files for use of exf:
2042      - ALLOW_ECCO not needed
2043      - ECCO_CPPOPTIONS.h should not be included from
2044        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
2045        as has been the case in the past
2046      - All cal/exf related options are currently set in
2047        single header file. Should remain so until we
2048        agree on a consistent new policy.
2049    o Removed all CPP options for cal package.
2050      cal has no more CPP options.
2051    o modified STOREs in GAD_ADVECTION
2052    o corrected key comp. for passkey
2053    
2054    checkpoint52b_post
2055    o new version: "thsice" of thermodynamic sea-ice pkg:
2056     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
2057     - modify fluxes but do not change theta directly;
2058     - light cleaning of bulk_force pkg (still needed with thsice).
2059     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
2060       + output_thsice.txt to test thsice & bulk_force pkgs.
2061    o put back grid & coriolis monitor output.
2062    checkpoint52b_pre
2063    
2064    o call "do_the_model_io" at the beginning (=> dump initial state)
2065    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
2066    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
2067      (need info on NUMBER_OF_PTRACERS)
2068    o missing PTRACERS headers in some routines
2069    o default tamc.h in pkg/autodiff supposed to crash
2070      to ensure proper customization
2071    
2072    checkpoint52a_post
2073    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
2074      - moved surfaceTendencyTice from pkg/seaice to main code
2075      - subroutine FREEZE_SURFACE now limits only surface temperature
2076        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
2077        => new output.txt for global_ocean.cs32x15 & global_with_exf
2078      - keep the old version of FREEZE for backward compatibility;
2079        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
2080      - corresponding modifs for TAF directives
2081    o added surface flux output variables to TIMEAVE_STATVARS
2082    o time-averaged output for pkg/ptracers
2083    o fix problem with ECCO-related divided adjoint
2084      snapshot file was missing some ad-variables,
2085      but no warning issued by TAF
2086    
2087    checkpoint52a_pre
2088    o some bug fixes for #undef REAL4_IS_SLOW
2089    
2090    checkpoint52 = ecco_c52_e35
2091    o after testing adjoints of checkpoint51u_post
2092    
2093    checkpoint51u_post
2094    o this is the post-merge tag of the ecco-branch
2095      (needs another clean checkout and re-testing)
2096    o various natl_box_adjoint configs and results
2097      but no input fields
2098    o obcs adjoint not yet merged!
2099    o adding ECCO global 1x1 and 2x2 degree configs
2100    o updated/extended some store directives for seaice
2101    o pkg/ecco now containes ecco-specific part of cost function
2102    o top level routines the_main_loop, forward_step
2103      supersede those in model/src/
2104      previous input data.cost now in data.ecco
2105      (new namelist ecco_cost_nml)
2106    o in ctrl/ cleaned some cross-dependencies and updated CPP options
2107    
2108    checkpoint51t_post
2109    o this is the pre-merge tag of the ecco-branch
2110    
2111    checkpoint51s_post
2112    o cleanup: removed various obsolete #define-s
2113    o pkg/grdchk
2114      - renamed 'ph-grd 3' to 'grad-res'
2115      - merged from ecco-branch
2116        (remaining bug fixes for obcs gradient checks)
2117      - additional high-precision output for testreport
2118        (grep for 'precision_grdchk_result')
2119    
2120    checkpoint51r_post
2121    o cleaned up or removed CPP_OPTIONS.h files
2122    o updated results for some of the tests to reflect the new
2123      optfiles (-ieee: -O0 instead of -O3)
2124    
2125    checkpoint51q_post
2126    o cd_code:
2127      - moved cd_scheme.F -> cd_code_scheme.F
2128      - separate read_checkpoint from cd_code_ini_vars.F
2129      - separated cd_code part from write_checkpoint
2130      - updated AD_SOURCE, generated .flow
2131      - added CD_CODE_VARS.h to the_main_loop
2132      - Moving cd_code specific store dir.s to pkg/cd_code
2133    o ctrl package totally restructured
2134      - pack/unpack now optional and decoupled from
2135        xx_/adxx_ I/O
2136      - ctrl_pack/unpack cleaned
2137        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
2138      - confined inclusion of AD_CONFIG.h to where necessary.
2139    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
2140    
2141    checkpoint51p_post
2142    o create initial cd_code package
2143      - WARNING: the initialization of fields within packages
2144        is broken because INI_FIELDS (where READ_CHECKPOINT is
2145        called) is called *before* PACKAGES_INIT_VARIABLES.
2146        This seems to be backwards since
2147        1) its important to initially zero the entire field including
2148           the "halo" region
2149        2) zeroing needs to be done *before* reading pickup info
2150           and the pickup call might or might not happen in any
2151           particular run
2152      - this needs an overhaul for R2
2153    o cleanup verification/*/code/GMREDI_OPTIONS.h
2154    o cleanup testreport
2155    
2156    checkpoint51o_post
2157    o bringing AD-related verif's up to date with genmake2
2158      - carbon/
2159      - global_ocean.90x40x15/
2160      - hs.94.1x64x5/
2161      - (front_relax/ )
2162    o (more) consistent directory structure for AD-related verif.'s
2163    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
2164    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
2165    o bug fix in find_alpha.F for MDJWF:
2166      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
2167        change rho -> rho-rhoConst
2168      - replace call find_rho to find_rhonum
2169    o initialisation of rFlx extended to full array (required by TAF)
2170      and shifted to thermodynamics
2171    o removed PTRACERS.h in ptracers routine
2172    o added surfacetendencyPtr to S/R parameter list pracers_forcing
2173    o Correcting initialisations for fVerU, fVerV.
2174    o helping TAF to recognize dependency on kUp for
2175      fVerU, fVerV
2176    o Replacing delZ by delR in pkg/ctrl/
2177    checkpoint51o_pre
2178    
2179    o undid all of cp51 pending some cleanups and discussion
2180    o added the [#include "AD_CONFIG.h"] statement to all files that need
2181       it for adjoint/tl #defines
2182     o re-worked the build logic in genmake2 to support AD_CONFIG.h
2183     o removed tools/genmake since it no longer works
2184    
2185    checkpoint51n_post
2186    o modifications to make FREEZE flux visible to pkg/kpp
2187      - moved surfaceTendencyTice from pkg/seaice to main code
2188      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
2189      - subroutine FREEZE now limits only surface temperature
2190        (this means new output.txt for global_ocean.90x40x15,
2191         global_ocean.cs32x15, and global_with_exf)
2192    o added surface flux output variables to TIMEAVE_STATVARS
2193    
2194    checkpoint51n_pre
2195    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
2196    o added [#include "AD_CONFIG.h"] to all files that use the following
2197      defines:
2198      - ALLOW_ADJOINT_RUN
2199      - ALLOW_TANGENTLINEAR_RUN
2200      - ALLOW_ECCO_OPTIMIZATION
2201    
2202    checkpoint51m_post
2203    o incorporating changes to get TAMC/TAF working in genmake2
2204      - added new TAMC/TAF targets to the Makefile
2205      - various cleanups related to package handling
2206      - these changes should have no impact on the forward model
2207    
2208    checkpoint51l_post
2209    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
2210     - faster algorithm for cal_addtime.F
2211     - higher precision arithmetic, where needed
2212     - pkg/exf *startdate variables changed from calendar date to
2213       model integration time
2214    
2215    checkpoint51l_pre
2216    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
2217    o enable to apply restoring on S & T only in a latitude band.
2218    o update output (external_forcing_surf modif. change truncation errors)
2219       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
2220    
2221    checkpoint51k_post
2222    o change default to: useNHMTerms=.FALSE.
2223     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
2224       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
2225     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
2226        exp1, ideal_2D_oce
2227     - change data file of oceanic exp (leave the results unchanged for now)
2228       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
2229    o set gravitySign automatically according to the vertical coordinate used
2230      (and change sign: back to "logical" value: +1 when R increases downward)
2231    o added an include barrier to the default CPP_OPTIONS.h and
2232      removed the #include "PACKAGES_CONFIG.h" from it
2233    o fix a bug in mom_fluxform (from chk51j_post)
2234    
2235    checkpoint51j_post
2236    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
2237    o adjusted some flow directives (dynamics, thermodynamics)
2238    o added cubed-sphere case to test cost function
2239    o heckpoint_lev?_directives.h now include
2240      pkg-specific directives, whenever those are enabled.
2241    o Moving pkg-specific flow directives to corresponding pkg
2242      Moving pkg-specific differentiation list to corresponding pkg
2243      Moving pkg-specific checkpoint-lev storing to corresponding pkg
2244      ---> conventions are
2245           - pkg_ad.flow
2246           - pkg_ad_diff.list
2247           - pkg_ad_check_lev?_dir.h
2248    
2249    checkpoint51i_post
2250    o merge of the branch-genmake2
2251      - knowingly breaks the older genmake
2252      - automatic generation of all ALLOW_${PKG_NAME} defines
2253      - new testreport supersedes older testscript
2254    o large number of package inclusion and header cleanups
2255    checkpoint51i_pre
2256    
2257    o new output for adjoin of global ocean vector invariant
2258    o fix for checkpoint of thermodynamic seaice and bulk_force
2259    o Steph gchem various cleanups
2260    
2261    checkpoint 51h_pre
2262    o fixed some single quotes
2263    o modify gchem pkg to be more versatile
2264    o modifications to clean up dic pkg
2265    o add pkg/cfc
2266    
2267    checkpoint51g_post
2268    o provide links for ARPACK and ADM*TLM
2269    o start removing verification/vero/
2270    o update AD-related stuff
2271      (in particular some IF-statements in model/src/ routines)
2272    o adding to verification/global_ocean.90x40x15/ adjoint of
2273      vector invariant setup
2274    
2275    checkpoint51f_post
2276    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
2277    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
2278      of tracer Green's fucntions for ocean inversion project.
2279    
2280    checkpoint51f_pre
2281    o Added on-the-fly spatial interpolation capability
2282        "USE_EXF_INTERPOLATION" to pkg/exf.
2283      - This is a temporary Cartesian-grid hack until
2284        the super-duper ESMF coupler becomes available.
2285      - See verification/global_with_exf/README for usage example.
2286      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
2287        flags and modified pkg/seaice accordingly.
2288    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
2289        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
2290        non-local transport term.
2291    
2292    checkpoint51e_post
2293    o pkg/mom_vecinv:
2294      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
2295      - add time-ave diagnostic of vorticity advection.
2296    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
2297    o atmospheric geopotential: - include water vapor effect;
2298                                - use p^kappa in p* scaling.
2299    o land pkg: read initial state from files.
2300    o AIM : add stratospheric drag in the upper level
2301    
2302    checkpoint51d_post
2303    o change function ILNBLNK (=> last non-blank char.) to return zero
2304      (instead of the string length) when the string. char is empty
2305    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
2306    o modif's to restore TAMC compatibility
2307      - avoid "_d" constructs in PARAMETER declarations
2308      - avoid interrupting lines by comment lines
2309    o Use cluster local disks for purely local I/O
2310      vs. globally visible disks needed for ctrl stuff
2311      (merged from ecco-branch)
2312      - new active_file_loc... and mdsio_..._loc routines
2313      - affected packages: autodiff, ctrl, grdchk, mdsio
2314    
2315    checkpoint51c_post
2316    o introducing integer flag debugLevel
2317      - debLevZero: suppress all output
2318      - debLevA: standard
2319      - debLevB: equivalent to current debugMode=.TRUE.
2320    o introducing pathname variable mdsioLocalDir for mdsio
2321      that can be specified at runtime
2322      (relevant for cluster I/O to local disk)
2323    `
2324    >>>checkpoint51b_post
2325    adjoint of ptracers
2326    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
2327    o extended state in checkpoint_lev?, etc.
2328    o alternative ctrl/cost with tr1 or ptracer
2329    o new comlev1_bibj_ptracers
2330    o new ptracers.flow
2331    o made ptracers_forcing same as external_forcing_s
2332    o added verification for adjoint with ptracers
2333      - adm. grdchk fail so far
2334      - tlm. grdchk OK
2335      - checked tapelev/comlev recomputations: OK
2336    <<<checkpoint51b_pre
2337    
2338    checkpoint51a_post
2339    o added code for biogeochemistry package
2340      - new pkgs: dic, gchem
2341      - new subroutine in ptracers
2342    o modify code for biogeo packages
2343      - in model/src and pkg/ptracers
2344    
2345    checkpoint51
2346    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
2347      - autodiff, ctrl, exf, grdchk, seaice
2348      kept separate packages
2349      - cost, ecco, obcs
2350    o updating verification/internal_wave, verification/lab_sea
2351      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
2352    
2353    checkpoint50i_post
2354    o Preparing next differentiable checkpoint and sync
2355      of MAIN vs. ecco-branch
2356      - 1st step: this one is differentiable
2357      - 2nd step: next(! not this) checkpoint will have updated packages
2358                  from ecco-branch)
2359    
2360    checkpoint50h_post
2361    o new package "land": provide surface BC for AIM.
2362    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
2363    o AIM: use true log-P extrapolation for near surface temp (= as in
2364        F.Molteni paper) ; update aim.5l_cs output.
2365    o New variable in PARM03 for more flexible pickups
2366    o somewhat cleaned package initialisation sequence for
2367      ctrl/ cost/ ecco/ in packages_... routines
2368    
2369    checkpoint50g_post
2370    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
2371      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
2372      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
2373        made the default because of faster convergence than ADI
2374    
2375    checkpoint50f_post
2376    o exf totally restructured
2377      - replaced all exf_set_ routines by one generic exf_set_gen.F
2378        and made sure it's still differentiable
2379      - split exf_getffields.F into new exf_bulkformulae.F
2380      - exf_inscal_/exf_outscal_ suffixes consistent with field names
2381      - updated adjoint/makefile and relevant verif. accordingly
2382    
2383    checkpoint50f_pre
2384     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
2385          + change Evap over land. (update aim.5l_cs output)
2386     o added missing .cvsignores and made uniform across expts
2387     o changed configuration of tidal_basin_2d expt
2388     o added pkg/debug functions for tracing code in fatal crashes
2389     o tidied pkg/monitor to use MONITOR_OPTIONS.h
2390     o new fn in pkg/monitor to stop model if solution grows too big
2391     o removed lots of single quotes from comments
2392    
2393    checkpoint50e_post
2394    o make KPP work with PTRACERS
2395     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
2396       nearly a copy of kpp_transport_s
2397     - there is no analogue to SurfaceTendencyS, so I have to use
2398       gPtr(of the surface layer) instead
2399    o add a new platform SunFire+mpi (SunFire 15000) to genmake
2400    checkpoint50e_pre
2401    
2402    checkpoint50d_post
2403    o change kpp output from multiple-record state files to single-record state
2404      files analogous to write_state.F
2405    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
2406      analogous to the cg2d-related output.
2407    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
2408      so that writing to internal file fn (with length 512) fails.
2409    checkpoint50d_pre
2410    
2411    checkpoint50c_post
2412    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
2413    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
2414    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
2415    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
2416    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
2417    
2418    checkpoint50c_pre
2419    Merging from release1_p13:
2420    o bug fix for pkg/seaice dynamic solver
2421    o Added SEAICE_initialHEFF to pkg/seaice
2422    
2423    checkpoint50b_post
2424    o store u*,v* in gU,V instead of in guNm1,gvNm1
2425    o in order to put the momForcing out of the Adams-Bashforth:
2426      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
2427      to timestep.F
2428    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
2429    o re-generate output for highly sensitive test-exp:
2430       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
2431    
2432    checkpoint50b_pre
2433    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
2434    o corrected CPP option mismatch in exf_Bulk... functions for case
2435      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
2436    
2437    checkpoint50a_post
2438    o Bug fix for merging between c50 and KPP.
2439      ikey was passed from thermodynamics to kpp_calc via
2440      common block rather than being recomputed in kpp_calc,
2441      in contradiction with new key itdkey.
2442      New key ikppkey created, and tamc.h headers updated.
2443    
2444    checkpoint50
2445    - 2nd step of merge with ecco-branch:
2446      merge changes in ecco-branch back into main trunk
2447    - bug fix in find_alpha
2448    - more storing in gmredi_calc_tensor.F, kpp_routines.F
2449    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
2450    - merged some sliced AD support routines
2451    
2452    checkpoint49
2453    merged from ecco-branch:
2454    o exf:
2455      - Enable initialisation of forcing fields to constant
2456        (runtime) values.
2457      - in exf_getffields.F
2458        Reduce i-/j-loop to interior domain, discarding overlaps.
2459        That also fixes wrong TAF-key computations for key_1, key_2
2460        with bulf formulae.
2461      - exf_init.F modify #ifdef for exf_init_evap
2462      - exf_getffieldrec.F, ctrl_getrec.F
2463        The following INT-usages are not safe:
2464          fldsecs  = int(fldsecs/fldperiod)*fldperiod
2465          fldcount = int(fldsecs/fldperiod) + 1
2466        and were modified.
2467    o autodiff: checkpoint_lev...
2468      - updated storing for bulk formulae (some arrays were missing)
2469      - added state for seaice package
2470      - synchronized with main branch
2471    o DIVA:
2472      Modif.s in
2473      - the_main_loop.F
2474      - the_model_main.F
2475      and added cost_final_restore.F cost_final_store.F
2476      o With these changes, it is possible to fully separate
2477        the first forward run to compute the cost function (mdthe_main_loop)
2478        and adjoint runs over individual DIVA intervals (adthe_main_loop)
2479        into separate model executions.
2480        This enables better tuning of DIVA to given queue sizes.
2481      o Loss of cost function value in consecutive DIVA runs is
2482        fixed by storing to 'costfinal' file.
2483      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
2484        beginning/end of adjoint integration is accounted for.
2485      The current changes apply to TAF-1.4.26.
2486      TAF has one remaining bug, requiring one manual change
2487      (see MITgcm manual).
2488    o cal: synchronized between MAIN and ecco-branch
2489    
2490    checkpoint48i_post
2491    o Changes to restore differentiability of code w.r.t. previous tag
2492      (mostly adding new routines to make list and replacing
2493      pressure by totPhiHyd).
2494    o Updated and merged grdchk package
2495      - has both ADM and TLM checks
2496      - works for single- and multi-proc.
2497      - output cleaned
2498      - worked successfully for parallel DIVA
2499    o genmake:
2500      - Adding -platform=SP4
2501      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
2502    o Modif. for DIVA:
2503      ctrl_unpack should not be called in intermediate DIVA interval.
2504      (similar thing would apply for active files such as
2505      tbar, sbar, psbar, which should not be reinitialised;
2506      only relevant for ecco-branch)
2507    
2508    checkpoint48h_post
2509    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
2510    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
2511    o Added SEAICE_initialHEFF to pkg/seaice
2512    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
2513    
2514    checkpoint48g_post
2515    --- EOS:
2516    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
2517      store total Potential in totPhyHyd for diagnostics & EOS.
2518    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
2519    --- Pressure/geopotential gradient:
2520    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
2521    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
2522      ( changes results of global_ocean_pressure )
2523    o NLFS + z-coord.: add eta*Rho' contribution.
2524    o accurate phiHyd when using interface-W at the middle between 2 centers
2525     ( changes results of ideal_2D_oce )
2526    o includes r* 2nd term in potential gradient.
2527    
2528    checkpoint48f_post
2529    Merging from release1_p12:
2530    o Modifications for using pkg/exf with pkg/seaice
2531      - improved description of the various forcing configurations
2532      - added basic radiation bulk formulae to pkg/exf
2533      - units/sign fix for evap computation in exf_getffields.F
2534      - updated verification/global_with_exf/results/output.txt
2535    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
2536      (SBO) core products, including oceanic mass, center-of-mass,
2537      angular, and bottom pressure (see pkg/sbo/README.sbo).
2538    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
2539      to avoid negative values in shallow regions.
2540      - updated verification/natl_box/results/output.txt
2541      - updated verification/lab_sea/results/output.txt
2542    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
2543    o Added useSingleCpuIO option (see PARAMS.h).
2544    o Updated useSingleCpuIO option in mdsio_writefield.F to
2545      work with multi-field files, e.g., for single-file pickup.
2546    o pkg/seaice:
2547      - bug fix in growth.F: QNET for no shortwave case
2548      - added HeffFile for specifying initial sea-ice thickness
2549      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
2550    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
2551      kpp_transport_t.F, forward_step.F, and the_main_loop.F
2552    o pkg/seaice:
2553      - adjoint-friendly modifications
2554      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
2555    
2556    checkpoint48e_post
2557    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
2558    o dynamics: change definition of computational domain & adapt mom_fluxform
2559      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
2560    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
2561        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
2562        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
2563        global_ocean.90x40x15 global_with_exf global_ocean_pressure
2564        inverted_barometer solid-body.cs-32x32x1
2565      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
2566    
2567    checkpoint48d_post
2568    o in preparation for r*:
2569     a) use pre-computed gradient of hydrostatic potential:
2570        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
2571     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
2572        => affects results of glob_oce_pressure (different truncation error)  
2573      update output.txt of ideal_2D_oce & global_ocean_pressure
2574    
2575    checkpoint48d_pre
2576    o in preparation for r*:
2577      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
2578      pass the 2 comp. of the grad. as arguments to momentum S/R.
2579      but for the moment, only used if it does not change the results.
2580    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
2581    
2582    checkpoint48c_post
2583    Modifications in treatment of initial flux forcing controls
2584    to avoid extra storing of flux fields.
2585    
2586    checkpoint48c_pre
2587    o Added tidal_basin_2d experiment (currently 1D!)
2588    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
2589    
2590    checkpoint48b_post
2591    o r* coordinate added in #ifdef NONLIN_FRSURF block.
2592     (modification to pressure gradient not yet implemented)
2593    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
2594      (for U & V) that are used for vertical advection of momentum.
2595    
2596    checkpoint48a_post
2597    o In preparation for r*, use temp. array to compute vertical transport
2598       in flux-form momentum pkg. => change results of few test-exp.
2599      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
2600                        lab_sea, natl_box & plume_on_slope
2601    
2602    checkpoint48
2603    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
2604    
2605    checkpoint47j_post
2606    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
2607    o moved adexch from forward_step to addummy_in_stepping
2608    o added exch in ctrl_map_...
2609    o aveFreq.=0. at end of cost_final to avoid overwrite in
2610      reverse checkpointing loop
2611    o Yet more changes in gmredi:
2612      * adgmredi_calc_tensor
2613        avoiding all recomputation of gmredi_slope_limit
2614      * adgmredi_x/y/rtransport
2615        added flag for excessive storing to avoid recomp. of
2616        u/v/rtans, dTdx/y/z
2617        -> this is not really necessary and very memory-consuming
2618      * adgmredi_slope_psi:
2619        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
2620      * gmredi_slope_limit
2621        re-activated full calculation of taperfct for case 'ac02'
2622    o updating verification/ adjoints of carbon, global_ocean.90x40x15
2623    
2624    checkpoint47i_post
2625    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
2626    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
2627      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
2628    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
2629    o gmredi: fix few bugs.
2630    
2631    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
2632    This will be a good checkpoint to plug into the ecco-branch.
2633    o few modif.'s to get latest version adjointed
2634      (mainly kick out code in ini_linear_phisurf)
2635    o modif's to run adjoint with exactConserv
2636    o case GM_BOLUS_ADVEC should be cleaned
2637      S/R gmredi_slope_psi should be cleaned
2638    o verification/carbon now has exactConserv=.TRUE.
2639    
2640    checkpoint47g_post
2641    o time-average AIM output: becomes independent from statvars time-average
2642      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
2643    o After TAF bug fix:
2644      Tested adjoint of gmredi package.
2645      Tests were done with checkpoint47 rather than with latest
2646      checkpoint47f_post since the latter is broken for the adjoint
2647      verification/carbon/ contains both ADM and TLM gradient checks.
2648    Here they are, before they get changed/lost/stolen.
2649    Mostly modif.'s to fix numerical sensitivities.
2650    Gradient checks OK for
2651    - GM_taper_scheme:
2652      * clipping
2653      * ac02
2654      * linear
2655      * glw91
2656      * dm95
2657      * ldd97
2658    - GMREDI_OPTIONS:
2659      * GM_VISBECK_VARIABLE_K
2660      * GM_NON_UNITY_DIAGONAL
2661      * GM_EXTRA_DIAGONAL
2662      * GM_BOLUS_ADVEC
2663    in conjunction with data.gmredi parameters to be checked in
2664    in a few minutes under verification/carbon/code/
2665    
2666    checkpoint47f_post
2667    Merging from release1_p10:
2668    o modifications for using pkg/exf with pkg/seaice
2669      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
2670        and SEAICE_EXTERNAL_FLUXES
2671      - pkg/exf CPP options EXF_READ_EVAP and
2672        EXF_NO_BULK_COMPUTATIONS
2673      - usage examples are Experiments 8 and 9 in
2674        verification/lab_sea/README
2675      - verification/lab_sea default experiment now uses
2676        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
2677    
2678    checkpoint47e_post
2679    o created a tag prior to creating a branch
2680    
2681    checkpoint47d_post
2682    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
2683      at the bottom boundary had an erroneous half slip boundary condition
2684    o added bottom drag and no slip boundary condition capabilities to
2685      oceanic pressure coordinates code
2686    o added new verification experiment global_ocean_pressure, this experiment is
2687      also described in the tutorial section of the manual
2688    checkpoint47d_pre
2689    
2690    checkpoint47c_post
2691    o Added a verification experiment for a global cubed-sphere ocean run
2692      -  verification/global_ocean.cubed32x32x30
2693      -  uses pkg/therm_seaice and pkg/bulk_forcing
2694    
2695    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
2696    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
2697      when using P-coordinate; only implemented for atmospheric config.
2698    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
2699      NOTES: requires option NONLIN_FRSURF to be "#define".
2700    o update advect_xz/results/output.txt (left from checkpoint44g_post)
2701    
2702    checkpoint47b_post
2703    Merging from release1_p9:
2704    o pkg/seaice
2705      - removed GOTO's and added taf directives
2706      - double precision constants to reduce the g77 (Linux)
2707        to F77 (SGI) differences reported in release1_p8
2708    o tools/genmake
2709      - added SGI options
2710    o verification/testscript
2711      - updated to that of checkpoint47a_post
2712    o verification/global_ocean.90x40x15/input/eedata
2713      - modified for SGI f77 compatibility
2714    o verification/lab_sea
2715      - added description of sea-ice model
2716      - added missing matlab routines
2717      - added test of thermodynamics parallelization
2718    
2719    checkpoint47a_post
2720    o new pkg: aim_v23
2721     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
2722       for now, keep the same surface forcing as before.
2723     - Part-Cell implemented into AIM; check that Heat & Water are conserved
2724     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
2725     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
2726    o add diagnostic of surface correction term in monitor output
2727    
2728    o bulk_force and therm_seaice
2729    - Two packages:  bulk_force (Bulk forcing)
2730      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
2731    - Earlier integration from Stephaine Dutkiewicz
2732      and Patrick Heimbach.
2733    - Two ifdef statements for compile time,
2734       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
2735    
2736    checkpoint47
2737    differentiable version of checkpoint46n_post
2738    o bug fix in quasihydrostaticterms
2739    o * "clean" adjoint code (in terms of extensive recomputations)
2740        can now be obtained for all GMREDI options (i.e. for
2741        - GM_VISBECK_VARIABLE_K
2742        - GM_NON_UNITY_DIAGONAL
2743        - GM_EXTRA_DIAGONAL
2744        - GM_BOLUS_ADVEC )
2745      * However, wrong gradient check problem remains unsolved.
2746      * New CPP options have been introduced for different
2747        tapering schemes
2748    o external_fields_load now part of differentiation list
2749    o pressure needs multiple storing;
2750      would be nice to have store_pressure at beginning or
2751      end of forward_step, e.g. by having phiHyd global (5-dim.)
2752      (NB: pressure is needed for certain cases in find_rho,
2753      which is also invoked through convective_adjustment).
2754    o recomputations in find_rho for cases
2755     'JMD95'/'UNESCO' or 'MDJWF' are OK.
2756    o #define ATMOSPHERIC_LOADING should be differentiable
2757    o ini_forcing shifted to begining of initialise_varia
2758    o Incorporating QNVS line search routines into MITgcm
2759      (this is separate code, and therefore not under pkg)
2760      lsopt/, optim/
2761    o Updated verification/carbon/
2762      - #define GM_VISBECK_VARIABLE_K
2763      - GM_taper_scheme    = 'ldd97'    
2764    
2765    checkpoint46n_post
2766    Merging from release1_p8:
2767    o verification/natl_box:
2768      updating new external_fields_load routine
2769    o New package: pkg/seaice
2770      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
2771      The sea-ice code is based on Hibler (1979-1980).
2772      Two sea-ice dynamic solvers, ADI and LSR, are included.
2773      In addition to computing prognostic sea-ice variables and diagnosing
2774      the forcing/external data fields that drive the ocean model,
2775      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
2776      The implied surface heat flux is then stored in variable
2777      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
2778      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
2779      non-local transport term.  Because this call precedes model
2780      thermodynamics, temperature under sea-ice may not be "exactly" at
2781      the freezing point by the time theta is dumped or time-averaged.
2782      N.B.: fairly large differences in accuracy occur across
2783            different platforms/compilers; comparison between
2784            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
2785            generated output gives:
2786       T           S           U           V
2787      C D M    c        m  s        m  s        m  s        m  s
2788      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
2789      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
2790      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
2791    
2792      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
2793    o GAD:
2794      - generated new common blocks to account for call of
2795        same gad routines with differing traceridentities
2796        (needed to modify tracerIdentity indices in GAD.h)
2797      - generated separate common blocks for case useCubedSphereExchange
2798        (Department of Futurology)
2799      - parameter lists to gmredi_?transport: added tracerIdentity
2800      - added new key indices to tamc.h
2801    o external_fields_load:
2802      - added this routine to TAF list
2803      - needed to make some common blocks global and additional storing
2804        along the same lines as exf package (checkpoint_lev?_directives.h)
2805    o exf:
2806      updated external forcing package
2807      - bug fixes carried over from ecco-branch
2808        (missing OBCS_OPTIONS.h in two routines)
2809      - enable easy to use "no forcing".
2810      - added exf I/O for atmospheric loading
2811      - added exf I/O for runoff data
2812      - transfered scaling between exf <-> MITgcm to exf namelist
2813    o Adding new verification experiment global_with_exf.
2814      This verification experiment is almost identical to the
2815      global_ocean.90x40x15 experiment, except that it uses
2816      the exf (and cal) package instead of the
2817      external_fields_load routine (cf README file).
2818    
2819    checkpoint46m_post
2820    o modified testscript to return -- when there are no lines of "%MON" output
2821    o added new flag "quasiHydrostatic" for QH mode
2822      and new routine quasihydrostaticterms()
2823    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
2824      New routine: mom_u_coriolis_nh()
2825    o fixed sign of non-hydrostatic metric terms in u and v equations.
2826      Depend on correct sign of gravitySign.
2827    o added work.pc* to .cvsignore in aim directories using ifc
2828    o introduced flag for controllin non-hydrostatic metric terms
2829    o removed gravitySign from PARM04
2830    o switched to g77/ifc from pgf77 in aim experiments
2831    
2832    checkpoint46l_post
2833    o made convective adjustment work with pressure coordinates:
2834     - changed the direction of k-loop in convective_adjustment.F for the
2835       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
2836     - adjusted the reference pressure k-index in convective_adjustment.F
2837     - adjusted the convection condition in convect.F (in analogy to
2838       calc_ivdc.F)
2839     - convective_adjustment no longer computes anything on the halos
2840     - removed the warnings about negative salinity from find_rho.F and
2841       find_alpha.F; instead the new routine look_for_neg_salinity, called
2842       at the beginning of find_rho, find_alpha, and find_beta, does a
2843       check of the entire slice, if CPP-option
2844       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
2845    checkpoint46l_pre
2846    
2847    checkpoint46k_post
2848    o fixed the verification/global_ocean.90x40x15 experiment:
2849     - new bathymetry (the world according to A., JMC, and M.)
2850     - new initial fields and forcing fields (*.bin files)
2851     - new POLY3.COEFFS (for the next release one should switch to a full
2852       equation of state: JMD95P or MDJWF)
2853     - fixed several errors and redundancies in the data file
2854     - experiment uses looped cells
2855     - added matlab directory with diagnostic scripts for plotting of output
2856    
2857    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
2858     - read AIM physics parameters from a file (data.aimphys)
2859     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
2860    
2861    checkpoint46j_post
2862    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
2863    o move wVel computation at the end of the time step, in S/R integr_continuity
2864    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
2865    o update timeave pkg for wVel diagnostic.
2866    checkpoint46j_pre
2867    
2868    checkpoint46i_post
2869    o Clean up AIM package (and keep the results unchanged):
2870      include CPP_OPTION and use IMPLICT NONE in all routines ;
2871      declare all the variables _RL ; use _d 0 for all numerical constants.
2872      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
2873    
2874    checkpoint46h_post
2875    o cleaned up the use of rhoNil and rhoConst.
2876      - rhoNil should only appear in the LINEAR equation of state, everywhere
2877        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
2878        and the dynamical equations are all divided by rhoConst
2879    o introduced new parameter rhoConstFresh, a reference density of fresh
2880      water, to remove the fresh water flux's dependence on rhoNil. The default
2881      value is 999.8 kg/m^3
2882    o cleanup up external_forcing.F and external_forcing_surf.F
2883      - can now be used by both OCEANIC and OCEANICP
2884    checkpoint46h_pre
2885    
2886     Added code to convert surface volume flux (fresh water) into
2887     a mass flux when using P coordinates in the ocean (OCEANICP).
2888     Note: It assumes you have set rho0=rhoConst=density of fresh water.
2889    
2890    checkpoint46g_post
2891    o Include a new diagnostic variable phiHydLow for the ocean model
2892      - in z-coordinates, it is the bottom pressure anomaly
2893      - in p-coordinates, it is the sea surface elevation
2894      - in both cases, these variable have global drift, reflecting the mass
2895        drift in z-coordinates and the volume drift in p-coordinates
2896      - included time averaging for phiHydLow, be aware of the drift!
2897    o depth-dependent computation of Bo_surf for pressure coordinates
2898      in the ocean (buoyancyRelation='OCEANICP')
2899      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
2900        Theta, Salinity, and Pressure in the parameter list. This routine is
2901        presently contained in find_rho.F. This routine does not give the
2902        correct density for 'POLY3', which would be a z-dependent reference
2903        density.
2904    o cleaned up find_rho
2905      - removed obsolete 'eqn' from the parameter list.
2906    o added two new verification experiments: gop and goz
2907      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
2908    checkpoint46g_pre
2909    
2910    checkpoint46f_post
2911    o Enable tangent linear (forward mode) gradient checks:
2912      - extended active file handling to g_... files
2913      - added TANGENT_SIMULATION to theSimulationMode
2914      - extended grdchk package accordingly
2915    o added tangent linear setup in verification/carbon/code_ftl
2916    o added adjoint setup in verification/front_relax/code_ad
2917    
2918    checkpoint46e_post
2919    o Added new equation of state -> MDJWF
2920      - EOS of McDougall et al., 2002, JAOT, submitted
2921      - caveat: the equation of state is only valid for a smaller (more
2922        realistic?) range of values than JMD95P/Z and UNESCO
2923      - added masks to the calculation of pressure in store_pressure
2924      - added more check values for density in check_eos (ini_eos.F), some of
2925        the old check values are out of the range of the MDJWF-eos, so don't
2926        expect perfect matches for those
2927    checkpoint46e_pre
2928    
2929    checkpoint46d_post
2930    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
2931      'OCEANICP', also initialised field pressure correctly in ini_eos in the
2932      case of pressure coordinates. eosType='JMD95Z' in
2933      combination with buoyancyRelation='OCEANICP' now causes an error.
2934    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
2935      in find_alpha/beta.
2936    checkpoint46d_pre
2937    
2938    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
2939      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
2940    
2941    checkpoint46c_post
2942    o Changes necessary for ocean in p-coordinates
2943     -  Added new buoyancy relation = 'OCEANICP'
2944     -  Added new parameters = gravitySign (this used to be contained inside
2945        the factor dRdZ which I added when we first switched to R coordinates).
2946     X GM/Redi is not compatible (yet)
2947     X bottom drag and no-slip need to be debugged.
2948    checkpoint46c_pre
2949    
2950    checkpoint46b_post
2951    o Added new equation of state -> JMD95Z and JMD95P
2952      - EOS of Jackett and McDougall, 1995, JAOT
2953      - moved all EOS parameters into EOS.h
2954      - new routines ini_eos.F, store_pressure.F
2955    o Added UNESCO EOS, but not recommended because it requires
2956      in-situ temperature (see JMD95)
2957    o Modified formatting for knudsen2.f in utils/knudsen2 and added
2958      unesco.f to be used with POLY3
2959    checkpoint46b_pre
2960    
2961    checkpoint46a_post
2962    o Added (atmospheric) pressure loading
2963      - new field in FFIELDS.h, etc...
2964      - new cpp flag ATMOSPHERIC_LOADING
2965    o Changed hFacC to _hFacC in calc_phi_hyd.F
2966    o Added SHORTWAVE_HEATING to some files for consistency
2967    checkpoint46a_pre
2968    
2969    checkpoint46
2970    further merges from release1_p5
2971    o new ctrl package
2972      - adopted from ECCO environment to enable optimization
2973      - added Eliassen Palm fluxes to controls
2974    o added Eliassen Palm flux controls to gradient check package
2975    o cost package
2976      - Compatible with new ctrl package
2977      - added Eliassen Palm cost hooks
2978      - modif's of existing cost functions
2979    o Adjoint-related bug fixes in kpp:
2980      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
2981      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
2982    o autodiff package
2983      - flow directives:
2984        + new for S/R do_the_model_io
2985        + enhanced for S/R checkpoint
2986        + new gmredi.flow
2987      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
2988        disable adcommon.h/g_common.h by default.
2989      - fixed problem for adjoint of global_max
2990    o modified verification/carbon/
2991    o New setup for adjoint of global_ocean
2992    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
2993    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
2994    o incorporated hooks for sponge layer code (external_forcing.F)
2995    
2996    checkpoint45d_post
2997    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
2998  o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S  o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
2999    (affects plume_on_slope "cg2d" output)    (affects plume_on_slope "cg2d" output)
3000    o add new parameter deltaTfreesurf for free-surface time stepping
3001    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
3002  o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B  o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
3003  o change phiMin in exp1 (to agree with documentation)  o change phiMin in exp1 (to agree with documentation)
3004  o add new flags:  o add new flags:

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