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revision 1.82 by mlosch, Mon Aug 19 14:21:30 2002 UTC revision 1.842 by jmc, Thu Jun 21 00:53:20 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 standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
8     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
9     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
10    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
11     and change default value of parameter "GM_Small_Number";
12     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
13       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
14       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
15    o pkg/ecco: cost function when applying pkg/smooth to controls
16    o pkg/ctrl: add forcingPrecond run time parameter
17    o pkg/seaice:
18     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
19     - fix bug in metric terms of u-equation in LSR solver (implicit part),
20       changes verification/lab_sea
21     - rearrange implicit part of u-equation in LSR solver to make it easier to
22       read, understand, and debug. This causes changes at the truncation level.
23     - fix (serious) bug in the boundary conditions (sign error in the implicit
24       part) of the LSR solver. Changes all LSR results.
25     - fixed problem with HSNOW initialization to avoid thick snow when AREA
26       is initilized with small values - does not change lab_sea results.
27     - added HsnowFile initialization capability
28    o pkg/smooth: addition to model/src and pkg/ctrl so allow
29     initialization of pkg/smooth and application to control vector
30    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
31    o dependencies: pkg/profiles requires pkg/cal
32    o pkg/profiles:
33     - added option ALLOW_PROFILES_GENERICGRID
34         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
35         that interpolation information (grid points and coefficients) is provided
36         within the netcdf input files.
37         -> sample matlab scripts can be found in MITgcm_contrib/gael
38         that allow you to prepare netcdf input files.
39     - also modified: cleaner include statements, cleaner error print statements,
40       cleaner stops when error, and more tests of the netcdf input files consistency.
41    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
42    o pkg/seaice:
43     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
44       requires a new routine: seaice_diagnostics_fill.F
45     - make sure that seaice does not move if not forced (pressure replacement
46       method, Hibler and Ip, 1995), changes results
47     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
48     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
49       It is turned off by default (=-1.), because it changes the results.
50     - make it possible to read AREA from a file, too.
51    
52    checkpoint59c
53    o add S/R and diagnostics for oceanic mixed-layer depth
54    o move GMRedi call after all vertical mixing schemes (including KPP)
55    o pkg/thsice:
56     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
57      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
58    o pkg/obcs:
59     - bug fix for balance code
60    o pkg/seaice:
61      - allow values of SEAICE_elasticParm > 1
62      - add new parameter SEAICE_evpTauRelax as an alternative
63        to SEAICE_elasticParm
64      - make lsr boundary conditions free slip (by default), changes result
65      - add code for no slip boundary conditions for lsr
66      - set minimum of zeta to zero (and not 4e8) (changes results)
67      - add a cap on AREA after advecting AREA if seaice_growth is not called
68    o change calculation of Visbeck K:
69      - no longer depend on tapering scheme; instead, compute slope (limited
70        by GM_maxSlope). this is equivalent to what was comuted before with
71        clipping or linear tappering.
72      - fix vertical averaging (wrong by 1/2 level)
73      - leave the old version (but will not be maintained) within
74        #ifdef OLD_VISBECK_CALC / #endif
75      - update output of exp. ideal_2D_oce
76    o change error catch in calc_r_star to improve vectorization
77    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
78      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
79    o adjoint:
80      Re-organized adjoint checkpointing according to Matt Mazloff
81      (but with modifs/completions/cleanups)
82      Storing is now bundled into large arrays to optimized I/O
83      (and second step in cleanup of the_main_loop)
84    
85    checkpoint59b
86    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
87      - export/import (between ocean & coupler) fields needed for ocean DIC.
88    o pkg/seaice:
89      - get rid of three more exchanges seaice_calc_viscosities (required
90        different loop boundaries in seaice_lsr and seaice_ocean_stress)
91      - bug fix in seaice_ocean_stress (update of lab_sea required)
92      - reduce loop boundaries to necessary minimum also in seaice_evp
93      - go back to the old way of computing deltaC/Z as the adjoint likes that
94        better
95    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
96      passive tracer to an Age Tracer) + update output.txt
97    o pkg/exf:
98      - implement A-grid / C-grid selection for wind-stress input files.
99      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
100      for now, in exf_bulk_largeyeager04.F only :
101      - change implementation for case where windspeed + 2. components wind-stress
102        are read-in. AND use rhoConstFresh to convert evap.
103    o pkg/seaice:
104      - use correct EXCH_UV for wind-forcing (on A-grid).
105      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
106        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
107    o pkg/exf:
108      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
109      EXF_INTERPOLATION:
110      - merge global_with_exf/code version of exf_interp_read.F
111        to the main code ;
112      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
113        reading the file ; Important: This options needs to be defined to recover
114        previous code.
115        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
116      - no longer loose real*8 precision along the way when using exf_iprec=64.
117    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
118      - change discretisation of evp-solver in order to avoid another exchange
119        (changes lab_sea) and clean up a little
120      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
121        help the adjoint (this also changes the results slightly)
122      - add a few "_d 0" where they had been missing in seaice_evp.F
123      - cleaning up: remove unused seaice_calc_rhs.F
124    o pkg/exf: some cleaning-up:
125      - change various "constants" into runtime parameters
126      - cleaned-up Large&Yeager04 routine which should eventually
127        replace exf_bulkformulae.F (changed names of S/R and CPP)
128        and merged various ALLOW_ATM_WIND options
129     only used with thsice pkg (in thsice_get_exf.F):
130      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
131        which are used when useStabilityFct_overIce=TRUE (= the default)
132      - change default values of ice & snow emissivity and scale downward LW
133        by ice & snow emissivity.
134    o pkg/thsice:
135     fix few little problems, in thsice_calc_thickn.F:
136      - growth vertically (and not laterally) if iceFrac == iceMaskMax
137      - melt only laterally if hIce < hThinIce (as the comments say)
138      and in thsice_extend.F:
139      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
140      - start to form ice as soon as the minimum ice-volume is reachable.
141     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
142      and cpl_aim+ocn
143    o pkg/kpp
144     - move computation of surface related input fields to KPP into a new
145       subroutine kpp_forcing_surf.F
146     - remove wrong (within bi,bj loops) EXCH calls.
147     - little cleaning (add argument myThid in last position, cvs header ...)
148     - for now, fix conservation problem by exchanging KPPviscAz (may not
149       be the best fix)
150    o pkg/seaice
151     - check for inconsistent evp parameter/cpp-flag combination
152     - remove leftover errIO flat for obsolete name list error handling
153    o OpenAD
154     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
155    
156    checkpoint59a
157    o pkg/seaice: some parameter clarifications and a little bit of clean up
158    o pkg/thsice: rename run-time parameters:
159       himin       -> hIceMin
160       himin0      -> hThinIce
161       hihig       -> hThickIce
162       i0          -> i0swFrac
163       transCoef   -> bMeltCoef
164       frac_energy -> fracMelting
165      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
166       with default values (for now) that do not change the results.
167      remove old version of thsice vars advection in pkg/seaice.
168    o in FFIELDS.h:
169      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
170      - make pLoad & sIceLoad always available (but still only used if
171         ATMOSPHERIC_LOADING is #define).
172    o pkg/kpp: replaced _KPP_RL with _RL
173    o bug fixes for vertical diffusivity computations when both KPP and
174        3D diffusivity arrays are used.
175    o pkg/seaice: fix bug in evp solver, while doing that
176      - change (improve?) discretization of stress computations for both
177        cgrid-lsr and evp solver
178      - add a new routine to compute strain rates
179      - the above changes lab_sea results
180      - add no slip conditions for evp solver (off by default), lsr-version
181        may follow
182      - fix exchange for shear at Z-points (does not change lab_sea)
183      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
184        (to force the user to pick a time step since there is not "safe" way
185        of choosing it)
186      - add principal stress diagnostics
187      - rearrange fields for evp a little to avoid having to call a: too many
188        exchanges and b: exchanges for stress trensor components which we do
189        not have.
190      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
191        of evp, complete rewrite for lsr case (latter is does not yet work
192        in all cases)
193    o pkg/kpp: add code to have mixing in shelf ice caverns
194      - add myThid to all kpp routines (long overdue)
195    
196    checkpoint59
197    o pkg/exf:
198      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
199        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
200      - move exf header files from lower_case.h to UPPER_CASE.h ;
201        add missing cvs Header & Name
202      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
203      - add namelist param. selectStressGridPosition, exf_monFreq
204      - retire many _CLIM routines, and remove data.exf_clim
205        + params moved to data.exf
206        + climsst, climsss now handled by exf_set_gen, i.e.
207          climss?period=0 refers to constant field,
208          climss?period=-12 to monthly forcing
209      - split up namelists in data.exf
210    o pkg/seaice:
211      - remove seaice_exch and seaice_exch_uv
212      - remove superfluous exchange of theta
213      - add myThid to seaice_budget_ocean/ice
214      - add new interface for atmospheric wind forcing (C-grid only)
215        + new routine
216        + two new field (taux, tauy for stress over ice)
217        + removed one global field (DAIRN) for C-grid case only
218    o pkg/thsise
219      - 2nd set of modifs for thsice adjoint in conjunction with exf
220    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
221    
222    checkpoint58y_post
223    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
224      vertical diffusivity, similar to that in MOM4; turned on using
225      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
226      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
227    o Added capability for 3D specification of background vertical diffusion
228      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
229      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
230      "data" file that contains the 3D vertical diffusivity coefficients.
231    o ice dynamics (pkg/seaice) with thsice thermodynamics:
232      - add code within pkg thsice to advect & diffuse sea-ice fields
233      similar to (and will replace) what has been added in  seaice_advdiff.F,
234      but: - conserving Mass, Heat & Salt.
235           - better when using non-linear advection scheme (not yet fully tested)
236           - can also be used in atmospheric set-up (for now, only the diffusion).
237    
238    checkpoint58x_post
239    o IO option for global-file compact format:
240      - add options when generating topology (utils/exch2/matlab-topology-generator)
241      - add I/O capability (pkg/mdsio).
242      - adapt utils/matlab/rdmds.m to read this format.
243      for now long-line format not yet supported by pkg/mdsio (& exch2).
244    o shelfice: add a few diagnostics
245    
246    checkpoint58w_post
247    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
248      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
249      (and replace horiVertRatio in NH code).
250      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
251                         and tutorial_plume_on_slope (sensitive to truncation)
252    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
253      directly to drive seaice model (C-grid only)
254    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
255     - reintroduce computation of wind from stress,
256     - compute tau (in exf_bulkformulae.F) from windstress averaged to
257       mass points to avoid tau = 0
258     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
259    o rdmnc.m: make it work with "global" files created with gluemnc
260    o rdmnc.m : some improvements in dealing with singleton dimension
261      (tested on all testreport mnc output files).
262    o genmake2: disable pkg/profiles if netcdf test fails.
263    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
264    o move call to cal_readparms up to make calendar parameters/variable available
265      to all packages
266    
267    checkpoint58v_post
268    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
269      useDynP_inEos_Zc tested.
270    o pkg/exf: changes to properly interpolate/mask/scale initial fields
271    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
272      and portions thereof.  See read_cs.txt for description and examples.
273    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
274      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
275      following the great-circle arc between those 2 points.
276    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
277      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
278    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
279     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
280     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
281     - still needs work (not working with some options ; efficiency to improve)
282       and serious testing.
283     - use this scheme for temperature & salinity in 2 advection test exp.:
284       advect_xy & advect_xz, respectively.
285    
286    checkpoint58u_post
287    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
288    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
289    o testreport: add option "-skipdir" to skip some test.
290    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
291      momentum calculation.
292    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
293    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
294      remove checkpoint.F and the_correction_step.F (no longer used);
295      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
296    o add option (linFSConserveTr) to correct for tracer source/sink due to
297      Linear Free surface
298    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
299    o pkg/thsice: fix reading mnc-pickups
300    
301    checkpoint58t_post
302    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
303    o pkg/mdsio:
304     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
305       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
306       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
307     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
308     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
309       either MDS_READ_FIELD or MDS_WRITE_FIELD )
310     - new S/R (to replace MDSWRITEMETA), which allows to write more
311       informations (variable names, time ...) to meta files.
312     - modify rdmds.m to give back the meta file content.
313    o pkg/diagnostics: change vertical interpolation to be safer, and more
314       flexible (define p-levels to interpolate to in data.diagnostics);
315      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
316       diagnostic pointer.
317    o pkg/seaice: more cleaning up of seaice_growth, added many comments
318    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
319    o fix multi-category seaice:
320     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
321       SEAICE_MULTICATEGORY
322     - fix short wave heat flux
323    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
324       and allow to use EVP solver. Change forward lab_sea: test both EVP
325       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
326    o Initial check-in of lab_sea adjoint
327      (very similar to natl_box_adjoint/code_seaice)
328      * used C-grid and EVP solver
329      * used KPP, GM/Redi
330      * uses inAdExact=.TRUE.
331      * gradient checks fail for both ADM and TLM
332        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
333        f.d. gradients actually seem more problematic than ADM, TLM gradients;
334        issue is related to forward mismatch between g77 an ifort
335    o pkg/seaice: overhaul of thermodynamics
336     - growth.F and groatb.F are replaced by new routine seaice_growth.F
337     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
338     - move a few global fields out of SEAICE.h into seaice_growth.F and
339       make them 2D (FICE/QNETO/ ...)
340     - remove FO (it is the same as QNETO)
341     - introduce a few local fields to avoid modifying external fields such
342       as atemp, etc.
343    
344    checkpoint58s_post
345    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
346      changed exf_set_gen.F so that
347        genperiod=0 means input file is one time-constant field and
348        genperiod=-12 means input file contains 12 monthly means
349    o CG2D: use pre-computed solver main-diagonal (stored in common block);
350      this affects truncation error ; generate new output file for exp. which
351      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
352        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
353        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
354        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
355        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
356        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
357    o start implementation of deep-atmosphere and anelastic formulation
358    o verification: remove 2nd copy of input files and use script "prepare_run"
359      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
360    o mom_common/vecinv/fluxform: fix a few initialisation isssues
361    o profiles: fix for multithreaded case
362    
363    o diagnostics: rename few diags:
364      s/'PRESSURE'/'RCENTER '/g
365      s/'TICE    '/'oceFreez'/g
366      s/'TAUX    '/'oceTAUX '/g
367      s/'TAUY    '/'oceTAUY '/g
368      s/'SWFLUX  '/'oceQsw  '/g
369      s/DIFx/DFxE/g
370      s/DIFy/DFyE/g
371      and add few ocean-forcing diagnostics:
372      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
373    o modifications to pkg/seaice/growth.F and budget.F, which change results of
374      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
375      as actual snow thickness.  It now refers everywhere to effective snow
376      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
377    
378    checkpoint58r_post
379    o modifications to pkg/seaice/growth.F, which change results of
380      lab_sea experiment: fixes pertain to melting snow over open water, to
381      masking EVAP under sea ice, and to using the correct AREA variable for
382      computations of EVAP, PRECIP, HSNOW, and GHEFF
383    o add ability to read bathy, salt, and theta using MNC (off by def)
384    o add flooding algorithm and advection of HSNOW for pkg/seaice;
385      both are turned off by default and do no change any results
386    o seaice advection with pkg/thsice: a step toward the use of non-linear
387      advection scheme, but #ifdef or commented out for now (requires more EXCH).
388    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
389      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
390      in natl_box (affects results @ truncation level: update output.txt)
391    o multi-threading and IO:
392      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
393      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
394        (needed to work with SingleCpuIO): tested in all verif. exp.
395    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
396      affects the results (but none of the verification test uses this scheme).
397    o Adding some pkg/diagnostics capability to pkg/seaice
398      (will certainly be subject to changes)
399    o ctrl: adding new control variables:
400      lwflux, lwdown, evap, snowprecip, apressure, runoff
401    
402    checkpoint58q_post
403    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
404      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
405      high_res_cube configuration by 4% on Columbia.
406    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
407      add (in global_with_exf/code) a version of EXF_INTERP_READ without
408      dynamical allocation (seems to work in multi-threaded).
409    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
410      single CPU io) so that TAF does not have to see EESUPPORT.h
411    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
412    
413    checkpoint58p_post
414    o obcs: stop if obcs is used with useCDscheme = .true.
415    o shelfice:
416     - fix a sign error so that no slip at shelfice interface works
417     - remove stop for combination non-hydrostatic code and shelfice. That does
418       not mean, that the results are correct, but at least they are numerically
419       stable
420    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
421    o added adjoint exch routined for all exch*3d* routines
422      and updated flow directives
423    
424    checkpoint58o_post
425    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
426      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
427    o change controling S/R for writing pickup file (new S/R do_write_pickup)
428      and clean-up reading/writing of pickup files.
429    o fix local version of read/write pickup (NH part) in rotating_tank/code
430    o simplify EXCH interface:
431     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
432     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
433    o added the regrid package
434    o shelfice:
435     - add a simple boundary layer scheme to reduce noise
436     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
437    
438    checkpoint58n_post
439    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
440       local variable (not in common block).
441    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
442      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
443      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
444        to work with SingleCpuIO.
445    o add "_d 0" to real constant of pkg/cfc subroutines ;
446       update exp. cfc_exemple & tutorial_cfc_offline output files.
447    o multi-threading and IO:
448      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
449        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
450      - barrier before and after reading.
451      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
452      - avoid using MDS_WRITELOCAL for LAND pkg output.
453      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
454        common-block variables ; Allows multi-threading with master-thread IO.
455    o change default MAX_NO_THREADS from 32 to 4 ;
456      and stop cleanly when MAX_NO_THREADS is too small.
457    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
458    
459    checkpoint58m_post
460    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
461       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
462    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
463       keep global_ocean.90x40x15 (for AD testing) with former secondary test
464       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
465    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
466        add MITgcm_tutorials (= code + all the tutorials)
467    o ecco, option to compute cost for total ssh (mean+anom)
468    o consistent with addition of ptracer and ssh in pkg/profiles
469    o profiles: adding ptracer and ssh
470    o testreport: change multi-test output-file name
471      (from output.txt.{name} to output.{name}.txt)
472    o profiles: now ok for mutli-tiles case
473    o seaice: add 4 parameters for different advection schemes for area,
474      (effective) seaice thickness, enthalphy, and snow height. Their default
475      is the standard parameter SEAICEadvScheme
476    o calc_gw:
477     - add cosFacU in zonal viscous flux (harmonic.visc.).
478     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
479       of tutorial_plume_on_slope.
480    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
481    o calc_gw: true flux-form, account for horizontal grid spacing.
482      update rotating_tank results, but not plume_on_slope (affected at
483      truncation level, 11 digits).
484    
485    checkpoint58l_post
486    o calc_gw:
487     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
488     - remove side-drag for now (need to fix it); update plume_on_slope results.
489     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
490    o commit code to make SST/SSS weights spatially variable
491      (based on either variable in-situ or variable initial T/S weights)
492    o pkg/ecco:
493      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
494        now based on horizontally varying weights wthetaLev, wsaltLev
495      * cost_averagesflags now returns year indices in addition to day, month
496      * sflux balance is performed on annual basis
497        (sflxumm, sfluxmm2, bal_sfluxmm)
498      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
499        including separate counting and multipliers
500    o pkg/rbcs
501      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
502    
503    checkpoint58k_post
504    o testreport:
505     - always build in dir. "build" (if not there, mkdir build instead of building
506       & running in input)
507     - run in dir run (if it exists), in build otherwise.
508     - call prepare_run (if input/prepare_run exists)
509     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
510    o pkg/exf modifications to interpolation and rotation routines for more
511       reasonable treatment of North Pole singularity: for tracers North Pole
512       value is set to northernmost zonal-mean value, for zonal velocity it is
513       set to zero, and for meridional velocity it is set to northernmost value.
514    o pkg/exf/exf_check_range.F
515     - add tile index to diagnostics and move stop statement to the very
516       end of the routine.
517    o pkg/diagnostics: (diagnostics_main_init.F)
518      define title of isomorphic variables according to the current config.
519    o pkg/thsice with pkg/seaice dynamics:
520    - fix domain of computation (interior only, required for exf) and do exchanges
521    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
522    o towards a standard way of dealing with multi-threading in MONITOR
523      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
524    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
525       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
526    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
527    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
528    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
529       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
530    o tracer advection:
531     - clean-up and simplify calc_common_factors.F
532     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
533       advection subroutine (but still not used within DST advection S/R)
534    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
535    
536    checkpoint58j_post
537    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
538      from file (collects calls previously in FORWARD_STEP)
539    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
540    o adjoint store dir. adjusted accordingly
541    o genmake2
542      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
543    
544    checkpoint58i_post
545    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
546      on wind stress (SEAICEstressFactor defaults to 1.)
547    o Total number of Timers is finite (<=40): comment out 2 non-essential one
548      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
549    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
550      on CS-grid: no longer loosing mass.
551    o exf & curvilinear-grid: no longer modify longitude xC & xG.
552    o pkg/ggl90: fix sloppy output and fix a bug
553    o pkg/seaice: added SEAICEuseEVPpickup parameter
554      - Set to false in order to start EVP solver with
555        non-EVP pickup files when using SEAICEuseEVP
556      - fix sign error in diffusion in seaice_calc_rhs
557    
558    checkpoint58h_post
559    * Modifications for bottom topography control
560      o replace hFacC by _hFacC at various places
561      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
562      o add non-self-adjoint cg2d_nsa
563      o update autodiff support routines
564      o re-initialise hfac after ctrl_depth_ini
565      o works for 5x5 box, doesnt work for global_ocean.90x40x15
566    * Adding verification for 5x5 box (4-layer) bottom topography control
567    
568    checkpoint58g_post
569    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
570       used for mean seasonal cycle, mean diurnal cycle); add an example
571       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
572    o pkg/ggl90:
573      - add parameter (minimum surface kinetic energy)
574      - fix bug (avoiding division by zero)
575    o couple pkg/thsice to pkg/seaice:
576      - modify advection in seaice to accomodate new scalar fields to be advected
577      - only muliDimAdection scheme work with seaice/thsice
578      - mapping of thsice-variables to seaice-variables, back and forth
579      - does not break the verification experiments, but does not give the
580        desired results either
581    o pkg/seaice
582      - make (default) second order advection a bit less confusing?
583    
584    checkpoint58f_post
585    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
586      to pkg/seaice):
587      - new routines thsice_map_exf and thsice_get_exf provide the interface
588      - add an additional formal parameter to thsice_solve4temp
589    o pkg/exf:
590      - add new fields wspeed, snowprecip (to be able to couple to thsice)
591      - correct Stefan-Boltzmann constant
592      - new parameter for longwave surface emittance
593      - separate some stuff from exf_bulkformulae into new routines  
594        exf_radiation, exf_wind
595      - add new parameters and constants: longwave emissivity for ocean, ice
596        and snow, evaporation parameters over ice
597      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
598        either wind from stress or stress from wind
599    o pkg/thSIce:
600    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
601    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
602       and THSICE_CALC_THICKN
603    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
604    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
605      to make debugging easier.
606    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
607    o pkg/bulk_force:
608      - clean-up comments and parameters ;
609      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
610    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
611      generate new output for test-experiment: aim.5l_cs.thSI
612    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
613      testreport accordingly
614    
615    checkpoint58e_post
616    o SEAICE_CGRID adjoint done
617    o R_STAR adjoint implemented.
618      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
619      * need to sort out init. of h0facc, etc.
620    o Make pkg/profile fully independent of ecco,cost, etc. stuff
621      to be able to use it in pure forward.
622    
623    checkpoint58d_post
624    o upgrade simple test-experiment to tutorial example:
625     step.1: duplicate the experiment and (step.2) will remove the old copy.
626      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
627      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
628      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
629      tutorial_global_oce_biogeo    <- copy of dic_example
630      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
631      tutorial_plume_on_slope       <- copy of plume_on_slope
632      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
633      tutorial_global_oce_optim     <- empty for now (David ?)
634      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
635     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
636    o correct a sign problem in cost_scat.F
637    o obcs and ptracers: fix boundary conditions for advections schemes
638      with larger stencil
639    o thsice adjoint: start
640    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
641      completeness
642    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
643      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
644    o ptracers adjoint:
645      * avoid extensive recomputatations
646      * fix missing re-init. of gptr (missed by TAF)
647    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
648      me to turn off the excessive output to STDOUT that this package produces
649    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
650      and add those terms in Vector-Invariant formulation.
651    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
652      if the control period (xx_hfluxperiod etc) is 0
653    o in profiles pkg, clean routines and fix details
654    o in ecco pkg, reading ssh data:
655      fix problem in case the model does not start at iter0=0
656    o fix mnc-pickup/restart for ptracers
657    o new package prifiles:
658      code to compute profile-based cost by Gael Forget
659      (modifs in ecco, ctrl, autodiff)
660    o Benign bug fix in initialization (spotted by M. Mazloff) of
661      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
662    
663    checkpoint58c_post
664    o adjoint: finish NLFS adjoint and provide reference output in
665      verification/global_ocean.90x40x15/results_ad_nlfs
666    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
667      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
668      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
669      with SEAICE_CGRID defined.
670    o move calendarDumps from "data" to "data.cal" and clean-up the code
671      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
672    o add useEXF & useCAL flags (for now, set in hard-coded way)
673    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
674      (were missing in NH mode, and wrong in quasihydrostatic mode).
675      waiting for Chris updated version of calc_gw to add those CALLs.
676    o fix bug in quasihydrostatic S/R ;
677      add a test for this option: global_ocean.90x40x15.qshyd
678    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
679      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
680    o add on/off flag useOffLine for package OFFLINE
681    o seaice:
682      - modify advection so that it works also on the C-grid
683      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
684        problem in multi-tile runs with C-grid
685      - add flags for clipping ice velocities and/or masking solver forcing
686      - fix drag (ocean on ice) formulation and a bug that caused noise in the
687        C-grid solver
688      - added a few comments to seaice_diffusion.F
689      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
690        are now exclusive)
691      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
692        required re-ordering the code a little:
693       + make DAIRN global variable (defined in SEAICE)
694       + move computation of the viscosities eta and zeta into a new separate
695         routine (because I need to recompute them in seaice_ocean_stress.F)
696    
697    checkpoint58b_post
698    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
699      update output.txt of exp. aim.5l_cs.thSI
700    o various mnc cleanups and improvements:
701      + shrink lookup tables by factor of ~4
702      + better error reporting when running out of lookup space
703      + able to handle longer path/file names (up to 500 chars)
704    o adjoint:
705      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
706      - TBD: "hidden" mom_vecinv recomp. in dynamics
707    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
708     (allow to differentiate between forcing components using new integer flags:
709      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
710     and add new flag to put Dissipation tendency out of Adams-Bashforth.
711    o ecco
712      - enable trend removal from SSH anomaly obs.
713    o adjoint
714      - a fix for PmEpR when #undef EXACT_CONSERV
715      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
716      - try to fix "hidden" recomp. in forward_step for NLFS
717        (NLFS seems broken sometimes after I checked it in)
718    o seaice:
719     - add c-grid version of the dynamic solver:
720       + three new routines that are the c-grid substitute lsr, dynsolver
721         and ostres
722       + put a few fields that were local to dynsolver into global common
723         blocks, so that I can move the computation of stresses etc into
724         seaice_lsr (saves coding but may break the adjoint).
725     - replace more hardwired parameters by runtime parameters
726     - add ice masks that mask the rhs of the implicit solvers where there
727       is no ice (commented out in seaice_dynsolver, because i am not sure
728       if this works properly), eventually this should replace the clipping
729       of ice velocities in seaice_dynsolver to +/-40cm/s.
730    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
731      include it only where its needed
732    o move balancing of fluxes before the call of external_forcing_surf
733    o seaice:
734      - correct units of turning angles (now they are really in degrees)
735      - move computation of GWATX/Y out of main routine into dynsolver
736      - initialize GWATX/Y in seaice_init
737    o Apply mask on Fresh-Water flux (needed for SSH forcing).
738      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
739    o seaice: add runtime flags for turning angles (default to zero)
740    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
741      and trend from exf forcing and ctrl control adjustments
742    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
743      (since checkpoint57x_post)
744    o change the default rotation period to 86164.s = the Earth rotation
745    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
746      and based on a reference stratification. Tested within hs94.cs-32x32x5.
747    o seaice advection: add code for choosing between the default (2nd order
748      central differences) and multiDim advection schemes provided by
749      pkg/generic_advdiff
750    o seaice:
751      - removed all references to SEAICE_GRID.h fields from
752        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
753        (cubed-sphere configuration will change a little)
754      - grid computations in seaice_init are obsolete now.
755      - cleaned up code a little so that is easier to read (hopefully).
756      - added new (better?) discretizations of default advection and diffusion
757        (turn on with SEAICEuseFluxForm)
758      - replace 1 in 3d global fields by kSurface in growth.F
759      
760    checkpoint58a_post
761    o seaice:
762      - bug fix in advect.F
763    o shelfice:
764      - separate shelfice load anomaly from pload (breaks with time
765        dependent forcing), => introduce constant field shelficeLoadAnomaly.
766        Its default is 0., but it may be computed more cleverly from (unknown)
767        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
768        done offline. A good approximation of the pressure load anomaly is
769        necessary to avoid large initial adjustment processes underneath
770        deep-reaching shelfice.
771      - small fix in ISOMIP shelfice_thermodynamics
772      - add more sophisticated thermodynamics of Hellmer (1989), this is
773        now the default
774      - give a few constants more intuitive names
775    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
776      if bulk formulae are used in long integration (especially EmPmR). Turn
777      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
778      if balancePrintMean, the imbalance that is substracted is printed to
779      STDOUT.
780    o fix bug (typo) in obcs_apply_eta.F
781    o add a new package shelfice which enables us to model the circulation
782      underneath shelf-ice with draughts of hundreds of meters.
783     - works
784     - to do: + include improved thermodynamics
785              + check whether kSurfC (from model/inc/SURFACE.h) can be used
786                instead of new field kTopC
787              + can we use topoFile, Ro_surf and existing code in ini_depth.F
788                instead of new field R_shelfIce and new code in ini_depth.F
789                and ini_mask_etc.F?
790              + adjust vertical mixing schemes?
791    o seaice pkg:
792     - add a cpp-flag to include a simple formula for a salinity dependent
793       freezing point of sea water at the surface
794     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
795       meridional stresses are now different (and hopefully correct)
796    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
797       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
798       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
799    o pkg/diagnostics: add options and parameters for regional-statistics
800       diagnostics ; define regions by reading a region-mask from a file
801       (might add other options later)
802    o pkg/bulk_force:
803     - add option and parameters to use AIM surface-flux formulae.
804     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
805       others forcing fields (defined in PARM05, parameter file "data") are loaded
806       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
807     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
808     - use the right EXCH call for uwind,vwind (to work on CS-grid).
809     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
810       and parameters (note: calcWindStress replaces .NOT.readwindstress).
811     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
812    
813    checkpoint58
814    o add "--embed-source" option to genmake2 which, when the supporting
815      tools can be compiled (as determined by genmake2) will turn on the
816      embed_files package which then embeds the entire MITgcm source code
817      (*.[fFhc] + Makefile) used for the build within the executable
818      - requested by CNH but off by default
819      - adds a paltry <9MB to the mitgcmuv executable in most cases
820      - only writes the output when useEMBEDSRC in eedata is true
821    o clean up 3-dim. relaxation codes:
822      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
823      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
824      * Thanks to Tom Haine for testing!
825    
826    checkpoint57z_post
827    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
828      affects output (@ truncation level) of exp. plume_on_slope ; updated.
829    o fix the pickup behavior for obcs in combination with ptracers
830    o fix a bug in ptracers_external_fields_load
831    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
832      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
833    o transfered surface NH pressure to eta field (if exactConserv).
834    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
835         and update lab_sea output.txt file.
836    o completing 3-dim. relaxation code: additional term
837         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
838      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
839      * At compile time, in "EXF_OPTIONS.h" set
840          #define  ALLOW_CLIMTEMP_RELAXATION
841          #define  ALLOW_CLIMSALT_RELAXATION
842      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
843          tauThetaClimRelax3Dim = 15552000.0,
844          tauSaltClimRelax3Dim  = 15552000.0,
845      * 3 cases:
846          1) Use a constant-in-time 3-dim. field
847          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
848          3) Real-time relax. to time-evolving prescribed field
849    o Adding Laplacian-type smoothness constraint on
850      initial and boundary (forcing) controls (ic, bc)
851      * enable at compile-time via
852        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
853      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
854      * Absolute scale somewhat unclear so far
855      * no area weighting was included since no other cost term does so far
856    
857    checkpoint57y_post
858    First step for a NLFS adjoint
859    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
860    o new init. routines for calc_r_star, calc_surf_dr
861    o still need to deal with ini_masks_etc
862    o testreport seemed happy
863    checkpoint57y_pre
864    
865    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
866    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
867    o add new offset feature to offline pkg (plus minor cleanup)
868    o cfc fixes for final year of integration
869    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
870      be in GCHEM_OPTIONS).
871    
872    checkpoint57x_post
873    o fix testreport Pb in multiple test experiment.
874    o cleanup our namelist syntax in verification:
875      - make it more F95 standards compliant (some work still needed)
876      - allows the vast majority of our tests to work with gfortran
877    o Non-Hydrostatic:
878     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
879     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
880    o Allow to apply AB on T,S rather than on AB(gT,gS):
881     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
882     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
883       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
884     - need a "clever" read_pickup to restart from the other AB formulation
885    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
886    o remove some unused variables (reduces number of compiler warnings)
887    o adjoint
888      * Disable useVariableViscosity for adjoint for time being
889        (there are a number of extensive recomputations)
890      * Initialize certain variables needed for adjoint
891    
892    checkpoint57w_post
893    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
894                 fix the singleCpuIO RS version of MDSWRITEFIELD
895       and add a WARNING if using globalFiles=T with multi-processors.
896    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
897      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
898    o tracer advection scheme:
899      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
900       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
901       was not very convenient).
902      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
903       (further tests needed for the implicit DST & Flux-Limiter schemes).
904    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
905      and sRef for convenience, handy, when you want to initialize
906      ptracers in a large domain with a constant non-zero value. Also,
907      untangle ptracers_init.F a little.
908    
909    checkpoint57v_post
910    o change dome exp. to use variable viscosity in side-drag terms.
911    o remove all the files from the cfc_offline test since they are now
912      incorporated into tutorial_cfc_offline which has been producing
913      identical results for a few days of testing
914    o add new parameter: sideDragFactor to enable half-slip-side BC
915      and change side-drag S/R to use viscosity from mom_calc_visc
916      (can switch back by setting sideDragFactor=0.); affects results at
917      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
918       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
919    o vorticity & strain are now computed without masking, to account for
920      no-slip-side BC in variable viscosity calculation ; mask is applied
921      anyway later on, before computing advection/coriolis terms.
922    o modify exp4 to test new obcs support for reading from external files
923      and for passive tracers
924    o fix behavior of ptracers_monitor when monitor output is written to a
925      netcdf-file; still not independent of monitor.F (writes in the same
926      file).
927    o change default value of tRef (put a uniform, meaningful value for ocean
928      & atmos) and initialize sRef (was missing, as Martin mentioned).
929    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
930      to be proportional to enstrophy dissipation length.  Thus,
931       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
932      This is now consistent with Smagorinsky and with the manual.
933    
934    checkpoint57u_post
935    o OBCS and PTRACERS: add open boundary support for passive tracers
936      - either use homogenous (pseudo) v.Neumann conditions or prescribe
937        OB-values from file; this is not different from the way theta and salinity
938        are treated
939      - however, Orlanski-radiation conditions are not supported, and the model
940        will stop if you use pTracers and Orlanski at the same time.
941      - beefed up the rountine obcs_external_fields_load: now only those open
942        boundary values are overwritten with values from files for which there
943        are really files, otherwise the OB-fields remain untouched. This makes
944        it possible to use different OBs at different ends of the domain (as
945        with EXF)
946    o reduce number of exch calls in shap_filt (s2).
947    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
948      truncation level) 4/5 MLAdjust test results (11&12 digits match).
949    
950    checkpoint57t_post
951    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
952    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
953      same truncation, independent of the face number: affects affects several
954      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
955    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
956      note that biharmonic viscosity + no-slip was not tested in any experiment.
957    o fix bug in non-linear free-surf side-drag ; generate new output for
958      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
959    o make mnc honor the writeBinaryPrec flag for most kinds of output
960    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
961    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
962      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
963    o add brackets in multi-terms sum to get same truncation, independent of
964      the face number (manage to get exactly same value of gU,gV at the cs-edge)
965      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
966    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
967      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
968      a maximum grid-scale Reynolds number.  Also, changes all length calculations
969      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
970      Suggested values of viscosity parameters found in mom_calc_visc.
971      Many new viscosity diagnostics available.
972    
973    checkpoint57s_post
974    o Add clearing-house for viscosity calculations, mom_calc_visc and
975      correct numerous bugs in LeithD and Smagorinsky discretizations.  
976      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
977      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
978      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
979      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
980      The Strain-Tension form is now called with useStrainTensonVisc=.true.
981      ViscAhStrain and viscAhTension are now retired.
982    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
983    o In response to JMC's bug report, genmake2 now ignores any soft-links
984      that it finds in the *current* directory when searching for files.
985      Soft-links found in any other source directories will still work as
986      they did before.
987    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
988      a C routine to unlimit the stack size
989    o mnc-ify pkg/aim snapshot vars
990    o mnc-ify pkg/land as requested by Daniel
991    o various changes to mnc including:
992      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
993      - output can now be grouped so that all files within a group
994          change the ITER portion of their names in lock-step together
995      - can now read ("global") PER-FACE (in addition to PER-TILE) files
996          and works with both EXCH1 and EXCH2 (but needs more testing)
997      - writing works for all verification test cases w/ g77 on Linux
998    
999    checkpoint57r_post
1000    o make MNC variable initialization happen earlier
1001    o add diagnostics for (almost) each term of the momentum Eq.
1002    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
1003    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
1004    o remove MINIMAL_TAVE_OUTPUT option ;
1005      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
1006    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
1007      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
1008    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
1009    o add time-dependent SST, SSS control
1010    o cost terms in ecco/ modularized (new cost_generic.F)
1011    o cost_averages routines are modularized (new cost_averagesgeneric.F)
1012    o new infrastructure for seaice model vs. obs misfits in seaice/
1013      * driver from the_main_loop.F is seaice_cost_driver.F
1014      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
1015      * gradient check in Exp. 6a of natl_box_adjoint/
1016    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
1017      (see README file)
1018    
1019    checkpoint57q_post
1020    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
1021    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
1022      - bug was reported by Jean-Michel and Ian Fenty
1023    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
1024      update exp. cpl_aim+ocn output.
1025    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
1026      Needed for high-res. runs with large global files
1027      to be able to limit tapelev size
1028    o Changed some tests for adjoint:
1029      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
1030      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
1031      * global_ocean.90x40x15/ back to default 3-level checkpointing
1032    o Modifications to enable scripted COMMON to MODULE conversion
1033      * verification/OpenAD/code/ has necessary scripts and description;
1034      * converts, compiles and runs successfully;
1035    
1036    checkpoint57p_post
1037    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
1038    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
1039      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
1040    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
1041    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
1042      (was already the case for dissipation with mom_vecinv,
1043       and also the case for grad.PhiHyd when staggered-timeStep)
1044      This will allow to put dissipation out-off the AB time-stepping.
1045     Unfortunately, affects truncation error. Update output of exp. that "fails"
1046      (cg2d matching number) and leave the others for later: front_relax(10),
1047      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
1048      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
1049    
1050    checkpoint57o_post
1051    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
1052      (2) its ready to be documented during the 20050801 DocFest
1053    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
1054      for ideal_2D_oce and lab_sea on linux_ia32_g77
1055    o set to #undef CTRL_SET_OLD_MAXCVARS_30
1056      in global1x1_tot/code_seaice_adj to access indices 32, 33
1057      (worth another tag)
1058    
1059    checkpoint57n_post
1060    o adding precip control xx_precip 32
1061    o adding swflux control xx_swflux 33
1062    o Replacing 10 forcing penalty cost routines by 1 generic.
1063    o Implementing partitioning in time-mean and variable adjustment
1064      for atmos. state.
1065    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
1066    o in natl_box_adjoint:
1067      * updated exp 1 to 10
1068        (but does not have time-mean vs. variable split results yet)
1069    o updated global1x1/*_seaice_adj/
1070      to incorporate latest changes
1071    o enable useSingleCpuIO for mdsio vector routines
1072      (applies in particular to tapelev I/O)
1073    o removed inefficient K-loop in all active_file*control*.F
1074    
1075    checkpoint57m_post
1076    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
1077      and advect_cs (use EXCH-2 and standard cs-32 grid files).
1078    o pkg/exch2: filling of face-corner halo regions is optional
1079      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
1080    
1081    checkpoint57l_post
1082     tag before updating tutorials (pre-release-2)
1083    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
1084       for output and interpolation of input fields onto model grid)
1085    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
1086       Affects results of exp. rotating_tank ; update output.txt.
1087    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
1088          and taking the square quantity and/or using a fraction-weight field.
1089    o fix aim_diagnostics_init.F mate numbers.
1090    o add mnc output capability to diagnostics/diagstat and update
1091      our cvsignore files for the ACSII output generated
1092    
1093    checkpoint57k_post
1094    o lab_sea now uses diagnostics package and provides a suite of
1095      new EXF diagnostics output.
1096    
1097    checkpoint57j_post
1098    o exf
1099      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
1100        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
1101        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
1102      * extended diagnostics output
1103        - now includes all EXF variables
1104        - hs, hl moved to common block
1105        - separate S/R for diagnostics, called after ctrl vector is added
1106        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
1107        - EXFqnet contains true Qnet (i.e. includes qsw)
1108      * updated verif. lab_sea, global_with_exf
1109      * Rearranging hflux (exf_mapfields -> exf_getforcing)
1110        to ensure that diagnostics sees a true EXFqnet
1111    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
1112    o diagnostics pkg: change pointers so that 1 diagnostic can be used
1113      several times with different frequencies.
1114    o mnc-ify the thsice package as requested by Daniel Enderton
1115      - the monitor--MNC output needs work
1116      - many attributes need to be added (most are currently blank)
1117    o mnc-ify theaim_v23 package as requested by Daniel Enderton
1118      - many attributes need to be added (most are currently blank)
1119    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
1120    o add Sadourny like discretization to the 4th.O vorticity advection scheme
1121    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
1122      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
1123         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
1124    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
1125     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
1126    
1127    checkpoint57i_post
1128    o Diagnostics package was changed: diagnostic allocation is now deactivated
1129      by setting an empty file name in the namelist (used to be by setting 0 frequency)
1130    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
1131      add 1rst Order upwind vertical Shear.
1132    o add a quick fix for A/B checkpointing in OFFLINE mode
1133    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
1134      end-run around the C/Fortran linking horror in eesup/src/timers.F
1135    o added pkg/runclock: allows user to terminate run based on wall clock
1136    o added non-hydrostatic scaling parameter: nh_am2
1137    o pkg/my82: futile attempt to make results compiler-independent by adding
1138      some "_d 0", etc. no effect.
1139    o for mnc output, fill the 'T' coordinate var with myTime and create a
1140      separate 'iter' variable for iteration count
1141    o pkg/diagnostics:
1142      add new capability: output of Global/Regional & per-level statistics ;
1143      tested against monitor output (including land & thSIce) on various exp.
1144    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
1145    
1146    checkpoint57h_done
1147      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
1148      data.diagnostics, data.gchem, data.ptracers) is done.
1149    
1150    o pkg/diagnostics: prepare for Global/Regional statistics.
1151      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
1152    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
1153      and rename it: DIFFERENT_MULTIPLE
1154    
1155    checkpoint57h_post
1156    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
1157    o pkg/diagnostics: change output frequency, now in seconds (instead
1158      of Nb of iterations). This requires to change data.diagnostics.
1159    checkpoint57h_pre
1160    
1161    o in mnc, let the user create the output dir if both mnc_outdir_date
1162      and mnc_outdir_num are false
1163    o add fflags() to pkg/diagnostics which allows one to specify, on a
1164      per-file basis, the file precision [default behavior is unchanged]
1165    o added diagnostics to pkg/kpp, including computation of mixed layer
1166      depth based on a temperature/density criterion
1167    o updated verification/natl_box to test the new pkg/kpp diagnostics
1168    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
1169    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
1170    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
1171      not mnc -- this mistake was found by JMC and is now corrected
1172    
1173    checkpoint57g_post
1174    o add Adams-Bashforth 3rd Order time stepping:
1175      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
1176      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
1177    checkpoint57g_pre
1178    
1179    o make lambda[Theta,Salt]ClimRelax spatially varying
1180      (default remains spatially uniform constant based on tau)
1181    o added new control variables
1182      * init. uVel, vVel, etanN
1183      * lambda[Theta,Salt]ClimRelax
1184    o separate masks used for ctrl_pack/unpack 'from write_grid' output
1185      (suggested by G. Forget)
1186    
1187    checkpoint57f_post
1188    o add parameter "baseTime" = model base time = time at iteration zero
1189      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
1190      account for baseTime shift
1191    o move Coriolis arrays from PARAMS.h to GRID.h
1192    checkpoint57f_pre
1193    
1194    o mnc-ifying the seaice package
1195    o introduced an alternative length scale calculation for use in the limiting
1196      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
1197    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
1198    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
1199      as well as grad(vort3).  Made it compatible with both approximate form
1200      for the cubed sphere and full form of these gradients.  Added flag
1201      useFullLeith to select between approximate and full form.  
1202    o add "d0" in getcon.F to reduce differences between compilers/platforms
1203      update output.txt of exp. fizhi-gridalt-hs
1204    o change port_rand funtion to allow to set the seed.
1205    o fix obscure MNC bug involving conversion between reals and integers
1206      - it caused no problems with certain (eg. gcc, ifc) compilers but the
1207        new version is now more standards-compliant
1208    o adjoint-related modifications
1209      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
1210      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
1211      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
1212    
1213    checkpoint57e_post
1214    o Adding eddy stress controls a la Ferreira et al.
1215    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
1216    
1217    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
1218      update output.txt of exp. fizhi-gridalt-hs
1219    o add more "Z" dimensions and associated coordinate vars to MNC
1220    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
1221    o parameter calendarDumps: when set, approximate months (30-31 days) and years
1222      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
1223      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
1224      months and years.  Requires pkg/cal.
1225    o diagnostics: add pickup functionality
1226      - off by default for backwards compatibility
1227      - current version only uses MDSIO -- MNC will be added
1228    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
1229    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
1230    
1231    checkpoint57d_post
1232    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
1233    o modify verification/ideal_2D_oce so that it tests the creation of mnc
1234      output from the diagnostics package
1235    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
1236    o make genmake2 more portable by using ".$FS" instead of ".f" for more
1237      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
1238    o add coordinate variables to the MNC output from the diagnostics package
1239    o change MNC-flags default value: true when useMNC=TRUE
1240    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
1241      the ability (off by default) to read the grid information using MNC
1242    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
1243    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
1244    o do snap-shot diagnostics at the middle of the time-interval (instead of
1245      at the end).
1246    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
1247      new test for AIM with thSIce + slab-ocean
1248    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
1249    o move state variable diagnostics to the beginning of the time step ;
1250      (note: still needs some work specially for snap-shot diagnostics)
1251      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
1252    
1253    checkpoint57c_post
1254    o Change testing option (-ieee) to get closer agreement between g77 & ifort
1255    o generate new output.txt files on faulks with g77 & the new -ieee option
1256    checkpoint57c_pre
1257    
1258    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
1259      update output.txt of exp. global_ocean.90x40x15
1260    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
1261      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
1262    o add saltFlux(+File) forcing capability with periodicExternalForcing
1263    o allow to use pkg diagnostics for GM-Redi & ThSIce output
1264    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
1265    o improvements for the MNC output from DIAGNOSTICS:
1266      - correct handling of the unlimitied dimension
1267      - all dims now have associated coordinate variables
1268      - variables located at U, V, and Corner ("Z") points are now written
1269        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
1270        *all* data points are output
1271    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
1272    o added pkg/seaice/seaice_monitor.F
1273    o mdsio_readfield.F can now read files visible only to master MPI process.
1274    o pkg/seaice: some test code for ice-modified ocean stress
1275    o exf_getffields interpolation defaults to bilinear for all scalar forcing
1276      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
1277      spurious negative numbers for precipitation and humidity.  Will cause
1278      some small numerical differences for integrations using pkg/exf/exf_interp.F.
1279    o pkg/ctrl/
1280      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
1281        May be enabled via doPackDiag
1282      *  introduce z-scaling of
1283         + gradient (doZscalePack) and
1284         + control (doZscaleUnpack)
1285    o pkg/mdsio/
1286      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
1287      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
1288    
1289    checkpoint57b_post
1290    o simplify options in diagnostics_fill arguments (remove weird combinations)
1291    o fix MNC coordinate variables so that they now contain per-face index
1292      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
1293      general, EXCH2 grids are only aligned to a "local" coordinate system
1294    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
1295    o Implement instantaneous output within pkg diagnostics:
1296      setting a negative frequency in data.diagnostics produces
1297     "snap-shot" output (as opposed to time-average if freq > 0)
1298    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
1299      NOTE: change ptracer diagnostics name: use 2 characters to work with
1300            more than 9 tracers. Add also diagnostics of advect & diffus flux.
1301    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
1302      becomes the coordinate variable for the 'T' dimension
1303    o add CF-style coordinate variables to MNC
1304      - just a first cut:  numbers are meaningless on the cubesphere and
1305        missing along the T axis but otherwise it works!
1306    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
1307    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
1308    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
1309      this is based directly on what the model compute, so that the content of
1310      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
1311    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
1312    o clean up build options files for SunOS, in particular
1313      - remove -traditional from xmakedepend
1314      - change -xarch=v9 to -xarch=native for f77
1315      - restore use of make (not gmake)
1316      - add CC=gcc if using g77
1317    o changes per discussion of AM, JMC, & EH3 today:
1318      - move redundant "grid" variables out of "state" -- in preparation of
1319        creating proper CF-style coordinate variables and in recognition
1320        that any/all grid variables can be easily copied (eg. w/NCO) from
1321        the grid files into any of the other NetCDF files
1322      - *always* output grid variables with MDSIO (this will eventually be
1323        changed)
1324      - output MNC grid file if useMNC is true
1325    o every instance of _END_MASTER() has been found and replaced with
1326      _END_MASTER( myThid ) in order to satisfy certain picky Sun
1327      preprocessors
1328    o re-arrange diagnostics pkg initialisation:
1329     - allow each package to extend the available diagnostics list
1330     - add some checking and fix small problems (multi-threaded, ...)
1331     - new S/R diagnostics_fill (replace fill_diagnostics):
1332       look through the short list of active diag. (instead of the long list)
1333       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
1334    
1335    checkpoint57a_post
1336    o this set of changes restores TAMC compatibility
1337      tested for global_ocean.90x40x15 adjoint on trough
1338      (what a pain)
1339    
1340    checkpoint57a_pre
1341    o some modifs in tools/build_options for sunos
1342    o call ctrl_pack for ctrl at end for optimcycle=0
1343    
1344    checkpoint57
1345    o add horizontal bi-harmonic viscosity for vertical velocity
1346      - new parameter viscA4W (defaults to viscA4)
1347      - affects only non-hydrostatic code
1348      - to be done: no-slip lateral boundary conditions
1349    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
1350    o implement Implicit Vertical advection for pTracers
1351    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
1352      (implemented also for implicit vertical diffusion & advection)
1353    o OBCS: extend application of tracer open boundary conditions
1354      to a strip beyond the boundary of width Olx/Oly
1355    o add call monitor to TAF set of required calls (flow directives)
1356      and include in natl_box_adjoint
1357    o untangle a few ifdefs related to cost, ctrl, autodiff
1358      untangel a few ALLOW_ECCO_OPTIMIZATION
1359    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
1360      (theta2, salt2 in ecco_cost_weights)
1361    
1362    checkpoint56c_post
1363    o OBCS as control variables
1364      - update ctrl_ad_diff.list, obcs_ad_diff.list
1365      - remove balance of obcs controls from default
1366      - fix index bug nobcs in ctrl_init
1367      - fix dummy fields filen in ctrl_pack
1368      - add dummy weights for obcs
1369    o lsopt: comment out fort.94 output
1370    o optim:
1371      - remove unnecessary header files
1372      - adjusted namelists
1373      - add xerbla.F to Makefile
1374    o exf:
1375      - multiple modifications of exf_check_range
1376      - unit change in exf_init_runoff from [m/year] to [m/s]
1377    o mdsio:
1378      - i/o-vector change debugLevel from debLevA to debLevB
1379    
1380    checkpoint56b_post
1381    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
1382      is called from DO_THE_MODEL_IO
1383      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
1384      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
1385      - clean up PTRACERS_WRITE_TIMEAVE a little
1386    o add another verification experiment that tests both the cfc-pkg and
1387      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
1388      reactive tendencies treated inline with regular timestepping
1389    o testreport previously did a lousy job of comparing small numbers, so
1390      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
1391      implemented in the little c-progam tmp_cmpnum.c which is embedded in
1392      testreport.
1393    o ptracers_monitor: bug fix for MPI
1394    
1395    checkpoint56a_post
1396    o GCHEM: finish reorganizating the package
1397      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
1398        (introduces another 3D-array for each passive tracer, but only if
1399        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
1400        gchemTendency is not needed because the timestep is done separately)
1401      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
1402      - GCHEM is now---more or less cleanly---separate from PTRACERS
1403      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
1404        so clear to me how that should be done in a general way.
1405    o CFC: improve formatting of output in CFC_ATMOS
1406    o PTRACERS:
1407      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
1408        that ALL experiments with ptracers enable can be checked. This makes
1409        GCHEM_MONITOR obsolete.
1410      - include a runtime parameter PTRACERS_monitorFreq that defaults to
1411        monitorFreq
1412      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
1413    o add PTRACERS (PTR0[1-5]) to testreport output
1414    o exf_check_range:
1415      * default changed to .TRUE.
1416      * will check values for niter0 if debLevA, every timestep if debLevB
1417      * STOP in exf_check_range if 'out of range'
1418      * range chosen generous to allow for potential extema
1419      TBD: a version with stricter range
1420           permitted range would be runtime parameters
1421    o GMredi:
1422      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
1423      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
1424      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
1425    o GCHEM:
1426      - move call to GCHEM_FORCING_SEP, so that it is now called before
1427        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
1428      - introduced a useGCHEM runtime flag and applied it everywhere.
1429      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
1430        this flag is now only visible within GCHEM-pkg routines.
1431      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
1432        be replaced by a 3D array that is computed before thermodynamics; for
1433        this, the tracer ID iTracer had to be included into the parameter list
1434        of ptracers_forcing
1435      - set up forward_step to call gchem_forcing, that will replace
1436        gchem_forcing_int in ptracers_forcing
1437      - cleaning up
1438    o small cleaning of exch2: remove files that are also in eesupp/src
1439    
1440    checkpoint56
1441    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
1442    o mnc: cleanup "full" files--fixes out-of-memory problem
1443    o ECCO-GODAE
1444      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
1445      * fully merged and updated from SIO code
1446        windstress sign change affects
1447        - exf_inscal_[u/v]stress
1448        - sign of xx_tau[u/v] adjustments
1449        - signs in cost_scat
1450      * ctrl_get_gen: avoid update of tau[u/v] for first few days
1451      * natl_box_adjoint updated and compressed
1452      * 2-level checkpoint switch added
1453        (tested in EXP. 1 of natl_box_adjoint)
1454      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
1455    o SVD
1456      * first complete, non-hacked version for SVD calculations
1457      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
1458        performed via direct access files admtlm_vector.it????
1459        (via ctrl_[un]pack)
1460      * optimcycle is used for ARPACK iteration counter
1461        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
1462      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
1463        and add linear transforms where necessary
1464      * controls are initial/final SST, SSS (can be extended; need to check
1465        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
1466    o mdsio: filename info to both stderr, stdout
1467    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
1468      from sign change
1469    
1470    checkpoint55j_post
1471    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
1472      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1473    o add consistent build directories and .cvsignore files to verification
1474    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
1475    o make all subroutines 30 or less characters in length for certain older
1476      compilers to work (a thorough search only turns up two routines in
1477      pkg/ptracers)
1478    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
1479      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1480    
1481    checkpoint55i_post
1482    o change arrays for total vertical diffusivity (2.D if explicit,
1483      3.D if implicit) ; each ptracer uses its own background value.
1484    o added mnc/NetCDF output capability to ocn_compon_interf
1485      - added bits to verification/cpl_aim+ocn so that it can run on
1486        ITRDA and other clusters without the mpirun "-wd" option
1487    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
1488      configuration
1489    o give MNC the ability to create additional files rather than
1490      exceeding a specified file size limit "MNC_MAX_FILESIZE"
1491      - the default is just less than 2GB which is a practical limit
1492        on many systems
1493    o Compute the non-local term using either KPP vertical diffusivity (=default)
1494       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
1495    
1496    checkpoint55h_post
1497    o add verification test "vermix"
1498    o remove all the *_ioinc flags and replace with the single global
1499      outputTypesInclusive flag
1500    o allow to set a vertical profile of vertical diffusivity for T & S
1501    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
1502    o useMNC moved from data.mnc to data.pkg
1503    
1504    checkpoint55g_post
1505    o Renaming carbon AD experiments to comply with testreport conventions
1506    o Updating adjoint of Held-Suarez hs94.1x64x5
1507    o Fixing directives for non-ECCO forward_step, after ECCO directives
1508      have been fixed to avoid recomp. of do_oceanic_phys
1509      Works well for global_ocean.90x40x15,
1510      but recomp. issue remains for carbon
1511    o Updating adjoint output for natl_box_adjoint after
1512      pkg/ecco has been modified (see taga c55d_post)
1513    
1514    checkpoint55f_post
1515    o rename to timeave_init_fixed
1516    
1517    checkpoint55e_post
1518    o some delicate re-shuffle of store directives to avoid one
1519      extra call of do_oceanic_physics
1520      affects ecco_the_main_loop.F, do_oceanic_physics.F
1521      checkpoint_lev1_directives.h
1522    o NB: this may break global_ocean adjoint temporarily,
1523      but it is clear how to fix it. Will do later, need this now.
1524    
1525    checkpoint55d_post
1526    o ECCO specific cost function terms (up-to-date with 1x1 runs)
1527    o ecco_cost_weights is modified to 1x1 runs
1528    o modifs to allow observations to be read in as
1529      single file or yearly files
1530    o enable to read exf forcing fields as either
1531      single file or yearly files (flag useExfYearlyFields)
1532    checkpoint55d_pre
1533    
1534    o switch between 2-level and 3-level checkpointing
1535    o add ability of MNC to write local and "partial" (eg. 2D slices where
1536      the full 3D field is never actually stored) arrays to NetCDF files
1537      with the correct (that is, the complete multi-dimensional) set of
1538      array indicies
1539      - used in mom_vecinv() to write the diagFreq output
1540      - tested (demonstrated) in verification/aim.5l_cs
1541    o further mnc-ification
1542      - add verification/lab_sea to the list with mnc setups
1543      - fix undefined mnc v-names in cd_code
1544      - add kpp to mnc output (both snapshot and timeave)
1545    o non-hydrostatic code
1546      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
1547        in calc_gw.F
1548      - defaults to viscAh
1549      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
1550        friction or Leith) in non-hydrostatic mode, as long as there is
1551        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
1552    o pkg/cost
1553      extend simple cost functions to treat time mean quantities
1554      (T,U,V) via cost_accumulate_state from cost_tile
1555    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
1556        be 2 times larger than the minimum size the advection scheme requires.
1557        now get a perfect conservation of salt in advect_cs test-exp (updated)
1558    o GGL90 (Gaspar's TKE mixed layer)
1559      - add horizontal diffusion of TKE, requires exchanges in
1560        do_fields_blocking_exchanges, horizontal diffusivity is zero by
1561        default. In OPA there is no horizontal diffusion of TKE but the
1562        mixing coefficients are computed from a horizontal average of TKE of
1563        6 points or so. I think that diffusion has a little more physical
1564        justification.
1565      - clean up ggl90_calc in the hope of reducing memory usage (this hope
1566        was in vain)
1567      - mask tke-variable in ggl90_init
1568    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
1569    o fix biharmonic diffusion on CS-grid.
1570    o more obcs stuff
1571      - added obcs_external_fields_load as an alternative to the EXF-pkg option
1572        for reading boundary values. This routine is called from
1573        obcs_prescribe_read
1574      - updated obcs_check
1575      - changed sponge layer relaxation parameter units for days to seconds
1576      - turned off sponge layer by default
1577      - changed argument list of OBCS_CALC to myTime+deltaTclock
1578      - fixed about 35 bugs in obcs_external_fields_load
1579    
1580    checkpoint55c_post
1581    o obcs stuff
1582      - new runtime flags useOBCSprescribe, useOBCSbalance
1583      - re-arranged obcs_calc
1584      - moved exf_getobcs to obcs_prescibe_read
1585        obcs_prescibe_read is called after ORLANSKI stuff
1586        and independent of it (executable can contain all).
1587      - updated obcs_check
1588      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
1589        These may be necessary only if tangential velocities are
1590        prescribed at OB, not sure, needs testing.
1591    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
1592      which simplifies the calls and passes the ifc check-bounds test
1593    
1594    checkpoint55b_post
1595    o add a 2D scalar, Z location, exchange_2 routine.
1596    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
1597      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
1598      affects advect_cs results (for the wrong reason): update output.txt
1599    o use a more standard discretization for biharmonic viscosity ;
1600     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
1601      affects results of dome set-up: update output.txt
1602    o fix gad_advection.F (CubedSphere part), back to version 1.23
1603    o fix bug in mom_vi_del2uv.F (CubedSphere part).
1604    
1605    checkpoint55a_post
1606    o merged code to
1607      * prescribe/read time-dependent open boundaries
1608        (works in conjunction with exf, cal)
1609      * sponge layer code for open boundaries
1610      * each boundary N/S/E/W now has its own CPP option
1611        (healthy for the adjoint)
1612    
1613    checkpoint55
1614    o up-to-date adjoint of previous breaks
1615      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
1616      - global_ocean_ebm: adjoint still needs fix (TLM ok)
1617      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
1618      - carbon: * remove tr1-related adjoint verification
1619                * add ptracer as control variable
1620    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
1621      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
1622    
1623    checkpoint54f_post
1624    o in verification/carbin/ remove experiment related to
1625      ALLOW_PASSIVE_TRACER (array tr1 etc)
1626      code_ad/ input_ad/ results_ad
1627    
1628    o add two new packages
1629      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
1630        + subject to optimization (memory)
1631      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
1632        + subject to reordering (many GOTOs in the original code)
1633        + so far opps is called for every (i,j) point, and then operates in
1634          the vertical; one may want to reorder the scheme in order operate in
1635          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
1636          fields)
1637    o overhaul of IO so that we now have flags for MDSIO and/or MNC
1638      - all verification tests compile and run with linux_ia32_g77
1639      - defaults are compatible with current input files--nothing
1640        should change if you were not previously using MNC
1641      - MNC output has been added in numerous places (eg. timeave)
1642        but there are still a few writes not yet do-able with MNC
1643        (this is in progress)
1644      - flags now allow for either/or/both use of MDSIO and MNC and
1645        documentation will soon follow
1646      - numerous small formatting cleanups for ProTeX
1647    o add version info (via BUILD_INFO.h) to MNC and stdout
1648    
1649    checkpoint54e_post
1650    o add two new packages
1651      - pp81 (Packanowski and Philander, 1981), Richardson number and
1652        stratification dependent mixing
1653      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
1654      - these scheme operate in a similar manner as KPP (without ghat, of
1655        course), however there is only one diffusivity that is used for both
1656        temperature and salinity (and passive tracers)ç
1657    o add offline package
1658    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
1659      provided by Stephanie Dutkiewicz
1660    o genmake2: add ability to search for C compilers and cleanup test output
1661      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
1662    
1663    checkpoint54d_post
1664    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
1665    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
1666      leading to additional shift by 5 days each year of integration
1667       (i.e. leading to considerable offset over the years)
1668    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
1669    o start with no AB and no initial filtering (staggerTimeStep):
1670      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
1671    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
1672      (external loading & cpl import/export stay in forward_step.F)
1673    o update coupling interface to work with new staggerTimeStep
1674    o change MDSIO ptracers_pickup.
1675    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
1676    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
1677    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
1678    
1679    checkpoint54c_post
1680    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
1681      this affects (truncation error) output.txt of test-exp:
1682       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
1683    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
1684    o change Qnet to always be the net heat flux, (+upward).
1685      affects (truncation error) output of natl_box exp.: updated
1686    o define the max number of passive tracers in PTRACERS_SIZE.h
1687    o start to test mnc routinely in exp0
1688    o add sea-ice loading (sIceLoad) as a new forcing field.
1689    
1690    checkpoint54b_post
1691    o add testreport "-j JOBS" option for parallel builds (tested and pretty
1692       impressive on Altix and Opteron systems)
1693    o diagnostics can now write NetCDF files through the mnc package
1694    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
1695    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
1696    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
1697      affects (truncation error) output of lab_sea & natl_box exp.: updated
1698    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
1699    
1700    checkpoint54a_post
1701    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
1702    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
1703    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
1704    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
1705      + internal_wave (shift in writing cg2d_ini_res)
1706    checkpoint54a_pre
1707    
1708    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
1709      - modified verification/lab_sea and natl_box_adjoint accordingly
1710    
1711    checkpoint54
1712    checkpoint53g_post
1713    o prepare splitting of thermodynamics: store convect.counter in common block
1714    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
1715      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
1716    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
1717    o new parameter "nShapS": allow to treat differently S from T (nShapT)
1718    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
1719    o restore adjointability
1720    
1721    checkpoint53f_post
1722    o modifications that affect AIM experiment results (update output.txt):
1723      - no advection of S at top interface Nr (pkg/generic_advdiff)
1724      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
1725    o AIM pkg:
1726      - include stability function into surf.Flux derivative relative to Tsurf
1727      - calculate clear-sky radiation & surface temp. change (for diagnostics)
1728    
1729    checkpoint53e_post
1730    o merged cylindrical coord configuration
1731    o added rotating_tank experiment
1732    checkpoint53e_pre
1733    
1734    checkpoint53d_post
1735    o faulks upgraded: re-generate output.txt that have changed:
1736       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
1737    o Added Bryan and Lewis, 1979, vertical diffusivity profile
1738    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
1739    o added Sadourny discretization of Coriolis
1740      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
1741      - re-enabled use of omega3 (useAbsVorticity)
1742    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
1743      vector-invariant equations
1744      - note: does *NOT* yet use same variable visc. for no-slip BC's.
1745    o recoded the lateral boundary conditions for non-hydrostatic w, this time
1746      hopefully without new bugs
1747      - still to do: biharmonic friction for non-hydrostatic w
1748    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
1749    o regenerated output for global_ocean_ebm (using -ieee)
1750    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
1751      of mom_common/
1752      - simple re-arrangement of instructions within computing loop
1753    checkpoint53d_pre
1754    
1755    checkpoint53c_post
1756    o new version of coupler for AIM+thSIce and Ocean models
1757     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
1758     - land: change Evaporation of snow
1759     - aim with thSIce: fix bug in snow-precip.
1760    o changes to calc_gw.F
1761     - bug fix for w^2 term near the bottom boundary
1762     - (hopefully) improve the lateral slip boundary condtions for use with
1763        partial/looped cells
1764      - because the bug fix changes two verification experiments anyway (exp5
1765        and plume on slope), change the lateral boundary condition from half slip
1766        to the value of no_slip_sides
1767    o ebm package wasnt quite up to the parallel task. Fixed that.
1768    o Adjoint of EBM package + verification
1769      * TLM OK
1770      * ADM not sufficient accuracy yet (needs further testing)
1771    
1772    checkpoint53b_post
1773    o Commiting new energy balance model to repository
1774      * package is pkg/ebm
1775      * verif. is verification/global_ocean_ebm
1776      * references are in ebm_driver.F
1777    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1778    C        Global thermohaline circulation. Part I:
1779    C        Sensitivity to atmospheric moisture transport.
1780    C        J. Climate 12(1), 71-82
1781    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1782    C        Global thermohaline circulation. Part II:
1783    C        Sensitivity with interactive transport.
1784    C        J. Climate 12(1), 83-91
1785    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
1786    C        Destabilization of the thermohaline circulation
1787    C        by atmospheric eddy transports.
1788    C        J. Climate 7(12), 1870-1882
1789    o Will need long integration testing.
1790    checkpoint53b_pre
1791    
1792    o created pkg/mom_common in preparation for variable viscosity code
1793    o renamed and split ini_mnc_io
1794    o pkg/land: only liquid water can diffuse or run-off
1795    o AIM using land: soil wetness availability account for snow
1796    o added printMapIncludesZeros to EEPARMS namelist
1797    
1798    checkpoint53a_post
1799    o restore TAMC compatiility for exf_constants.h
1800      (no usage of _d in .h)
1801    o Additional storing in KPP in an attempt to fix
1802      TAMC problem with adjoint of KPP code.
1803      (no success...)
1804      Identical code works fine with TAF.
1805    o Fixed verification/natl_box_adjoint experiments.
1806      Initial conditions for Experiments 4 and 5 are now
1807      set to "SEAICE_initialHEFF=0", which is more reasonable,
1808      and hence gives results closer to that of Experiment 2.
1809      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
1810    
1811    checkpoint53
1812    o stable checkpoint with up to date adjoint
1813      TLM tests only run for 1st grdchk at the moment. Its unclear if
1814      this is a code problem or a problem with resetting code for g_
1815      variables that is being autogenerated wrong.
1816      Otherwise:
1817       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
1818       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
1819         are both still in chaos following their security messes.
1820    
1821    checkpoint52n_post
1822    o various build (mostly genmake2) changes including:
1823      - ability to build/run more easily within Cygwin and MacOS X
1824      - more complicated Makefiles with a stronger dependence on Gnu Make
1825    o pkg/seaice modifications
1826      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
1827        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
1828        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
1829      - changed proxy for geostrophic velocity and updated
1830        verification/lab_sea/results/* accordingly
1831      - removed ADI dynamic solver from pkg/seaice
1832      - replaced all occurrences of 1/CSTICE or 1/CSUICE
1833        they caused a segmentation fault under certain circumstances
1834      - removed unused field WATR
1835    o bug fix in exf-package:
1836      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
1837         now reflect that.
1838    o small fixes in the cal-package:
1839      - set reference date to first of January for the 'model'-calendar
1840      - failing of cal_CheckDate in cal_FullDate now actually results in a
1841        warning
1842    o small modifications in exf-package to increase flexibility:
1843      - change climtempfreeze from a constant to a runtime parameter that
1844        is specified in data.exf_clim (default = -1.9)
1845      - introduce runtime parameter windstressmax (default = 2.0) that is
1846        specified in data.exf
1847    o fix in pkg/thsice:
1848      - update Evap (Tsf changes) to be consistent with Latent heat flux
1849      - maintain snow precipitation unchanged (even if Tsf >=0).
1850     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
1851    
1852    checkpoint52m_post
1853    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
1854      this does not change any of the results, because myIter=0 in swfrac always
1855      lead to jwtype=2 (the default anyway), but the call makes little sense
1856      as a default
1857    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
1858    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
1859      atmospheric model (AIM) to use it ; add a "slab ocean" component.
1860    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
1861    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
1862    o extending useSingleCpuIO option to work with new exch2 I/O format
1863      - old-style, missing-tile I/O is still accessible by defining CPP
1864        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
1865    o monitor package can write to NetCDF files and/or STDOUT
1866    o fix re-definition bug in MNC_GRID_INIT_ALL()
1867    o doc/api_reference added
1868      - a framework for building an API Reference Manual using all
1869        the "protex" comments embedded in the code
1870      - see pkg/generic_advdiff, pkg/mnc for examples
1871    o MNC:
1872      - make myThid the last argument for all subroutines
1873      - new default for the grid files: NO halos
1874      - add useMNC and other run-time flags
1875      - separate per-file-group handling of the unlimited dimension
1876      - early initialization of MNC w/ flags read at the eeboot stage
1877        and lookup tables set in initialize_fixed
1878      - write all MNC output to a freshly-created directory
1879    o thermodynamics sea-ice (thsice) is now tested with testreport.
1880    o test exp. advect_cs: use the standard cs32 grid ; update output.
1881    o Added functionality to grdchk:
1882      pick global i,j,k position (or nearest wet) where to perform check.
1883    
1884    checkpoint52l_post
1885    o new land formulation:
1886      a) use ground enthalpy as prognostic variable to ensure exact
1887         energy conservation.
1888      b) account for water temperature and for latent heat of freezing
1889         in all processes (rain, run-off, ground storage)
1890      c) compute surface and ground temperature implicitly.
1891    o aim_v23 modification for new land model:
1892      a) Treat separately land / ocean / sea-ice surface fluxes
1893         to allow implicit computation of land & sea-ice surface temp.
1894      b) add snow precipitation.
1895    checkpoint52l_pre
1896    
1897    o fix problem (when 1 tile is empty) in min/max monitor.
1898    o fix bug in timeAve (u,vZetatave in common block)
1899    o no restoring terms under ice for pkg/seaice
1900    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
1901    o bug fix for pkg/seaice pickups
1902    o change MNC call locations and add coordinate attributes
1903    o mask vorticity at the corner ; affects global_ocean.cs output
1904    o fix ini_curvilinear_grid ; test CS experiments with mpi
1905    o aim.5l_cs: modify sea-ice fraction input file ; update output
1906    o exf: Adding simple range check routine for exf fields after read
1907    
1908    checkpoint52k_post
1909    o removed top-level directory "diags"
1910      - we migrated these functions to pkg/timeave a long time ago
1911    o fixed bug introduced in pkg/monitor
1912    o accuracy ctrlprec = 32 insuffient for gradient checks using
1913      averaged fields (I/O via cost_averages)
1914      -> use ctrl.h in active_file*.F to control I/O precision.
1915    o paramter list of CALL ADTHE_MAIN_LOOP
1916    o added initial do_the_model_io to ecco
1917    o set all ...Freq to zero after cost_final
1918      taveFreq, dumpFreq, pChkptFreq
1919    o MAIN and ECCO differentiability restored
1920    
1921    checkpoint52j_post
1922    o fix nchklev in tamc.h for global_ocean...
1923    o Bringing flow and store directives up-to-date
1924    o Really weird thing!
1925      call do_the_model_io from the_main_loop with parameters
1926      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
1927      TAF places a faulty re-call of initialise_varia
1928      after cost_final call which should not be there!
1929    checkpoint52j_pre
1930    
1931    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
1932      error messages
1933    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
1934    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
1935      debug output
1936    o modfied mdsio_writefield.F to handle non-global files under exch2
1937    o update AIM Cubed-Sphere exp (aim.5l_cs):
1938      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
1939    o update AIM Equatorial Channel exp:
1940      use standard aim_v23 pkg and change the SST fields to be more realistic.
1941    o globalFile now works with exch2
1942    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
1943      mon_vort3.F to make exch2 friendly with >1 tile per cube face
1944    o limit timeave output for hi-res integrations
1945    
1946    checkpoint52i_post
1947    o removed CPP_EEOPTIONS.h from verification/*/code
1948    o updated the tiling for global_ocean_pressure
1949    checkpoint52i_pre
1950    
1951    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
1952      the old pkg/aim).
1953    
1954    checkpoint52h_pre
1955    o shortened offending lines in exch2_send_rx?.template
1956    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
1957    o genmake2: add build & execute test for NetCDF code
1958    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
1959      old grid files, moved CPP_EEMACROS.h to pkg/exch2
1960    o added useSingleCPUIO flag to monitor.F and mon_out.F
1961    o added temporary hack for sea-ice dynamics on the cube:
1962      metric terms are ignored and it is assumed that
1963      there is no sea-ice on cube faces 1, 2, 4, and 5.
1964    
1965    checkpoint52f_post
1966    o added exch2 cube routines to pkg/exch2
1967    o modified hs94.cs-32x32x5 to use it
1968    o added new grid files to hs94.cs-32x32x5
1969    checkpoint52f_pre
1970    
1971    checkpoint52e_post
1972    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
1973      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
1974    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
1975      to work with implicit vertical advection and AB ;
1976    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
1977    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
1978     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
1979    checkpoint52e_pre
1980    
1981    o fix bug in impldiff when Nr=1 or Nr=2.
1982    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
1983    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
1984    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
1985      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
1986    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
1987    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
1988    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
1989    
1990    checkpoint52d_post
1991    o re-tiled many expts to allow comparison in multi-processor mode
1992      - updated output accordingly
1993      - changed hs94.128x64x5 to use intial T from file rather than use the
1994        random number generator
1995    o add infrastructure in model routines for fizhi and gridalt packages
1996    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
1997    o changes to permit hi-res, cubed-sphere, configuration
1998      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
1999      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
2000      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
2001        of surface winds for the cube
2002      (A verification experiment, based on global_ocean.cs32x15, but with
2003       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
2004       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
2005       complete with example surface forcing files and matlab scripts to look
2006       at the output and compare it with that of global_ocean.cs32x15.)
2007    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
2008       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
2009       to conform to the common rule.
2010    o check-in the first version of the coupler + interfaces for multi-components
2011       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
2012       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
2013       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
2014       - ocean and atmos. share the same horizontal grid (no interpolation).
2015       - exchanges between component and coupler is done in forward_step
2016    o new verification experiment, cpl_aim+ocn:
2017       coupled ocean - AIM atmosphere on cs32 grid.
2018    
2019    checkpoint52d_pre
2020    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
2021    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
2022    
2023    checkpoint52c_post
2024    o Fixing OPTIONS files for use of exf:
2025      - ALLOW_ECCO not needed
2026      - ECCO_CPPOPTIONS.h should not be included from
2027        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
2028        as has been the case in the past
2029      - All cal/exf related options are currently set in
2030        single header file. Should remain so until we
2031        agree on a consistent new policy.
2032    o Removed all CPP options for cal package.
2033      cal has no more CPP options.
2034    o modified STOREs in GAD_ADVECTION
2035    o corrected key comp. for passkey
2036    
2037    checkpoint52b_post
2038    o new version: "thsice" of thermodynamic sea-ice pkg:
2039     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
2040     - modify fluxes but do not change theta directly;
2041     - light cleaning of bulk_force pkg (still needed with thsice).
2042     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
2043       + output_thsice.txt to test thsice & bulk_force pkgs.
2044    o put back grid & coriolis monitor output.
2045    checkpoint52b_pre
2046    
2047    o call "do_the_model_io" at the beginning (=> dump initial state)
2048    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
2049    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
2050      (need info on NUMBER_OF_PTRACERS)
2051    o missing PTRACERS headers in some routines
2052    o default tamc.h in pkg/autodiff supposed to crash
2053      to ensure proper customization
2054    
2055    checkpoint52a_post
2056    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
2057      - moved surfaceTendencyTice from pkg/seaice to main code
2058      - subroutine FREEZE_SURFACE now limits only surface temperature
2059        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
2060        => new output.txt for global_ocean.cs32x15 & global_with_exf
2061      - keep the old version of FREEZE for backward compatibility;
2062        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
2063      - corresponding modifs for TAF directives
2064    o added surface flux output variables to TIMEAVE_STATVARS
2065    o time-averaged output for pkg/ptracers
2066    o fix problem with ECCO-related divided adjoint
2067      snapshot file was missing some ad-variables,
2068      but no warning issued by TAF
2069    
2070    checkpoint52a_pre
2071    o some bug fixes for #undef REAL4_IS_SLOW
2072    
2073    checkpoint52 = ecco_c52_e35
2074    o after testing adjoints of checkpoint51u_post
2075    
2076    checkpoint51u_post
2077    o this is the post-merge tag of the ecco-branch
2078      (needs another clean checkout and re-testing)
2079    o various natl_box_adjoint configs and results
2080      but no input fields
2081    o obcs adjoint not yet merged!
2082    o adding ECCO global 1x1 and 2x2 degree configs
2083    o updated/extended some store directives for seaice
2084    o pkg/ecco now containes ecco-specific part of cost function
2085    o top level routines the_main_loop, forward_step
2086      supersede those in model/src/
2087      previous input data.cost now in data.ecco
2088      (new namelist ecco_cost_nml)
2089    o in ctrl/ cleaned some cross-dependencies and updated CPP options
2090    
2091    checkpoint51t_post
2092    o this is the pre-merge tag of the ecco-branch
2093    
2094    checkpoint51s_post
2095    o cleanup: removed various obsolete #define-s
2096    o pkg/grdchk
2097      - renamed 'ph-grd 3' to 'grad-res'
2098      - merged from ecco-branch
2099        (remaining bug fixes for obcs gradient checks)
2100      - additional high-precision output for testreport
2101        (grep for 'precision_grdchk_result')
2102    
2103    checkpoint51r_post
2104    o cleaned up or removed CPP_OPTIONS.h files
2105    o updated results for some of the tests to reflect the new
2106      optfiles (-ieee: -O0 instead of -O3)
2107    
2108    checkpoint51q_post
2109    o cd_code:
2110      - moved cd_scheme.F -> cd_code_scheme.F
2111      - separate read_checkpoint from cd_code_ini_vars.F
2112      - separated cd_code part from write_checkpoint
2113      - updated AD_SOURCE, generated .flow
2114      - added CD_CODE_VARS.h to the_main_loop
2115      - Moving cd_code specific store dir.s to pkg/cd_code
2116    o ctrl package totally restructured
2117      - pack/unpack now optional and decoupled from
2118        xx_/adxx_ I/O
2119      - ctrl_pack/unpack cleaned
2120        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
2121      - confined inclusion of AD_CONFIG.h to where necessary.
2122    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
2123    
2124    checkpoint51p_post
2125    o create initial cd_code package
2126      - WARNING: the initialization of fields within packages
2127        is broken because INI_FIELDS (where READ_CHECKPOINT is
2128        called) is called *before* PACKAGES_INIT_VARIABLES.
2129        This seems to be backwards since
2130        1) its important to initially zero the entire field including
2131           the "halo" region
2132        2) zeroing needs to be done *before* reading pickup info
2133           and the pickup call might or might not happen in any
2134           particular run
2135      - this needs an overhaul for R2
2136    o cleanup verification/*/code/GMREDI_OPTIONS.h
2137    o cleanup testreport
2138    
2139    checkpoint51o_post
2140    o bringing AD-related verif's up to date with genmake2
2141      - carbon/
2142      - global_ocean.90x40x15/
2143      - hs.94.1x64x5/
2144      - (front_relax/ )
2145    o (more) consistent directory structure for AD-related verif.'s
2146    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
2147    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
2148    o bug fix in find_alpha.F for MDJWF:
2149      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
2150        change rho -> rho-rhoConst
2151      - replace call find_rho to find_rhonum
2152    o initialisation of rFlx extended to full array (required by TAF)
2153      and shifted to thermodynamics
2154    o removed PTRACERS.h in ptracers routine
2155    o added surfacetendencyPtr to S/R parameter list pracers_forcing
2156    o Correcting initialisations for fVerU, fVerV.
2157    o helping TAF to recognize dependency on kUp for
2158      fVerU, fVerV
2159    o Replacing delZ by delR in pkg/ctrl/
2160    checkpoint51o_pre
2161    
2162    o undid all of cp51 pending some cleanups and discussion
2163    o added the [#include "AD_CONFIG.h"] statement to all files that need
2164       it for adjoint/tl #defines
2165     o re-worked the build logic in genmake2 to support AD_CONFIG.h
2166     o removed tools/genmake since it no longer works
2167    
2168    checkpoint51n_post
2169    o modifications to make FREEZE flux visible to pkg/kpp
2170      - moved surfaceTendencyTice from pkg/seaice to main code
2171      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
2172      - subroutine FREEZE now limits only surface temperature
2173        (this means new output.txt for global_ocean.90x40x15,
2174         global_ocean.cs32x15, and global_with_exf)
2175    o added surface flux output variables to TIMEAVE_STATVARS
2176    
2177    checkpoint51n_pre
2178    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
2179    o added [#include "AD_CONFIG.h"] to all files that use the following
2180      defines:
2181      - ALLOW_ADJOINT_RUN
2182      - ALLOW_TANGENTLINEAR_RUN
2183      - ALLOW_ECCO_OPTIMIZATION
2184    
2185    checkpoint51m_post
2186    o incorporating changes to get TAMC/TAF working in genmake2
2187      - added new TAMC/TAF targets to the Makefile
2188      - various cleanups related to package handling
2189      - these changes should have no impact on the forward model
2190    
2191    checkpoint51l_post
2192    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
2193     - faster algorithm for cal_addtime.F
2194     - higher precision arithmetic, where needed
2195     - pkg/exf *startdate variables changed from calendar date to
2196       model integration time
2197    
2198    checkpoint51l_pre
2199    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
2200    o enable to apply restoring on S & T only in a latitude band.
2201    o update output (external_forcing_surf modif. change truncation errors)
2202       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
2203    
2204    checkpoint51k_post
2205    o change default to: useNHMTerms=.FALSE.
2206     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
2207       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
2208     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
2209        exp1, ideal_2D_oce
2210     - change data file of oceanic exp (leave the results unchanged for now)
2211       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
2212    o set gravitySign automatically according to the vertical coordinate used
2213      (and change sign: back to "logical" value: +1 when R increases downward)
2214    o added an include barrier to the default CPP_OPTIONS.h and
2215      removed the #include "PACKAGES_CONFIG.h" from it
2216    o fix a bug in mom_fluxform (from chk51j_post)
2217    
2218    checkpoint51j_post
2219    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
2220    o adjusted some flow directives (dynamics, thermodynamics)
2221    o added cubed-sphere case to test cost function
2222    o heckpoint_lev?_directives.h now include
2223      pkg-specific directives, whenever those are enabled.
2224    o Moving pkg-specific flow directives to corresponding pkg
2225      Moving pkg-specific differentiation list to corresponding pkg
2226      Moving pkg-specific checkpoint-lev storing to corresponding pkg
2227      ---> conventions are
2228           - pkg_ad.flow
2229           - pkg_ad_diff.list
2230           - pkg_ad_check_lev?_dir.h
2231    
2232    checkpoint51i_post
2233    o merge of the branch-genmake2
2234      - knowingly breaks the older genmake
2235      - automatic generation of all ALLOW_${PKG_NAME} defines
2236      - new testreport supersedes older testscript
2237    o large number of package inclusion and header cleanups
2238    checkpoint51i_pre
2239    
2240    o new output for adjoin of global ocean vector invariant
2241    o fix for checkpoint of thermodynamic seaice and bulk_force
2242    o Steph gchem various cleanups
2243    
2244    checkpoint 51h_pre
2245    o fixed some single quotes
2246    o modify gchem pkg to be more versatile
2247    o modifications to clean up dic pkg
2248    o add pkg/cfc
2249    
2250    checkpoint51g_post
2251    o provide links for ARPACK and ADM*TLM
2252    o start removing verification/vero/
2253    o update AD-related stuff
2254      (in particular some IF-statements in model/src/ routines)
2255    o adding to verification/global_ocean.90x40x15/ adjoint of
2256      vector invariant setup
2257    
2258    checkpoint51f_post
2259    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
2260    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
2261      of tracer Green's fucntions for ocean inversion project.
2262    
2263    checkpoint51f_pre
2264    o Added on-the-fly spatial interpolation capability
2265        "USE_EXF_INTERPOLATION" to pkg/exf.
2266      - This is a temporary Cartesian-grid hack until
2267        the super-duper ESMF coupler becomes available.
2268      - See verification/global_with_exf/README for usage example.
2269      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
2270        flags and modified pkg/seaice accordingly.
2271    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
2272        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
2273        non-local transport term.
2274    
2275    checkpoint51e_post
2276    o pkg/mom_vecinv:
2277      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
2278      - add time-ave diagnostic of vorticity advection.
2279    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
2280    o atmospheric geopotential: - include water vapor effect;
2281                                - use p^kappa in p* scaling.
2282    o land pkg: read initial state from files.
2283    o AIM : add stratospheric drag in the upper level
2284    
2285    checkpoint51d_post
2286    o change function ILNBLNK (=> last non-blank char.) to return zero
2287      (instead of the string length) when the string. char is empty
2288    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
2289    o modif's to restore TAMC compatibility
2290      - avoid "_d" constructs in PARAMETER declarations
2291      - avoid interrupting lines by comment lines
2292    o Use cluster local disks for purely local I/O
2293      vs. globally visible disks needed for ctrl stuff
2294      (merged from ecco-branch)
2295      - new active_file_loc... and mdsio_..._loc routines
2296      - affected packages: autodiff, ctrl, grdchk, mdsio
2297    
2298    checkpoint51c_post
2299    o introducing integer flag debugLevel
2300      - debLevZero: suppress all output
2301      - debLevA: standard
2302      - debLevB: equivalent to current debugMode=.TRUE.
2303    o introducing pathname variable mdsioLocalDir for mdsio
2304      that can be specified at runtime
2305      (relevant for cluster I/O to local disk)
2306    `
2307    >>>checkpoint51b_post
2308    adjoint of ptracers
2309    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
2310    o extended state in checkpoint_lev?, etc.
2311    o alternative ctrl/cost with tr1 or ptracer
2312    o new comlev1_bibj_ptracers
2313    o new ptracers.flow
2314    o made ptracers_forcing same as external_forcing_s
2315    o added verification for adjoint with ptracers
2316      - adm. grdchk fail so far
2317      - tlm. grdchk OK
2318      - checked tapelev/comlev recomputations: OK
2319    <<<checkpoint51b_pre
2320    
2321    checkpoint51a_post
2322    o added code for biogeochemistry package
2323      - new pkgs: dic, gchem
2324      - new subroutine in ptracers
2325    o modify code for biogeo packages
2326      - in model/src and pkg/ptracers
2327    
2328    checkpoint51
2329    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
2330      - autodiff, ctrl, exf, grdchk, seaice
2331      kept separate packages
2332      - cost, ecco, obcs
2333    o updating verification/internal_wave, verification/lab_sea
2334      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
2335    
2336    checkpoint50i_post
2337    o Preparing next differentiable checkpoint and sync
2338      of MAIN vs. ecco-branch
2339      - 1st step: this one is differentiable
2340      - 2nd step: next(! not this) checkpoint will have updated packages
2341                  from ecco-branch)
2342    
2343    checkpoint50h_post
2344    o new package "land": provide surface BC for AIM.
2345    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
2346    o AIM: use true log-P extrapolation for near surface temp (= as in
2347        F.Molteni paper) ; update aim.5l_cs output.
2348    o New variable in PARM03 for more flexible pickups
2349    o somewhat cleaned package initialisation sequence for
2350      ctrl/ cost/ ecco/ in packages_... routines
2351    
2352    checkpoint50g_post
2353    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
2354      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
2355      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
2356        made the default because of faster convergence than ADI
2357    
2358    checkpoint50f_post
2359    o exf totally restructured
2360      - replaced all exf_set_ routines by one generic exf_set_gen.F
2361        and made sure it's still differentiable
2362      - split exf_getffields.F into new exf_bulkformulae.F
2363      - exf_inscal_/exf_outscal_ suffixes consistent with field names
2364      - updated adjoint/makefile and relevant verif. accordingly
2365    
2366    checkpoint50f_pre
2367     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
2368          + change Evap over land. (update aim.5l_cs output)
2369     o added missing .cvsignores and made uniform across expts
2370     o changed configuration of tidal_basin_2d expt
2371     o added pkg/debug functions for tracing code in fatal crashes
2372     o tidied pkg/monitor to use MONITOR_OPTIONS.h
2373     o new fn in pkg/monitor to stop model if solution grows too big
2374     o removed lots of single quotes from comments
2375    
2376    checkpoint50e_post
2377    o make KPP work with PTRACERS
2378     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
2379       nearly a copy of kpp_transport_s
2380     - there is no analogue to SurfaceTendencyS, so I have to use
2381       gPtr(of the surface layer) instead
2382    o add a new platform SunFire+mpi (SunFire 15000) to genmake
2383    checkpoint50e_pre
2384    
2385    checkpoint50d_post
2386    o change kpp output from multiple-record state files to single-record state
2387      files analogous to write_state.F
2388    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
2389      analogous to the cg2d-related output.
2390    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
2391      so that writing to internal file fn (with length 512) fails.
2392    checkpoint50d_pre
2393    
2394    checkpoint50c_post
2395    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
2396    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
2397    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
2398    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
2399    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
2400    
2401    checkpoint50c_pre
2402    Merging from release1_p13:
2403    o bug fix for pkg/seaice dynamic solver
2404    o Added SEAICE_initialHEFF to pkg/seaice
2405    
2406    checkpoint50b_post
2407    o store u*,v* in gU,V instead of in guNm1,gvNm1
2408    o in order to put the momForcing out of the Adams-Bashforth:
2409      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
2410      to timestep.F
2411    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
2412    o re-generate output for highly sensitive test-exp:
2413       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
2414    
2415    checkpoint50b_pre
2416    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
2417    o corrected CPP option mismatch in exf_Bulk... functions for case
2418      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
2419    
2420    checkpoint50a_post
2421    o Bug fix for merging between c50 and KPP.
2422      ikey was passed from thermodynamics to kpp_calc via
2423      common block rather than being recomputed in kpp_calc,
2424      in contradiction with new key itdkey.
2425      New key ikppkey created, and tamc.h headers updated.
2426    
2427    checkpoint50
2428    - 2nd step of merge with ecco-branch:
2429      merge changes in ecco-branch back into main trunk
2430    - bug fix in find_alpha
2431    - more storing in gmredi_calc_tensor.F, kpp_routines.F
2432    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
2433    - merged some sliced AD support routines
2434    
2435    checkpoint49
2436    merged from ecco-branch:
2437    o exf:
2438      - Enable initialisation of forcing fields to constant
2439        (runtime) values.
2440      - in exf_getffields.F
2441        Reduce i-/j-loop to interior domain, discarding overlaps.
2442        That also fixes wrong TAF-key computations for key_1, key_2
2443        with bulf formulae.
2444      - exf_init.F modify #ifdef for exf_init_evap
2445      - exf_getffieldrec.F, ctrl_getrec.F
2446        The following INT-usages are not safe:
2447          fldsecs  = int(fldsecs/fldperiod)*fldperiod
2448          fldcount = int(fldsecs/fldperiod) + 1
2449        and were modified.
2450    o autodiff: checkpoint_lev...
2451      - updated storing for bulk formulae (some arrays were missing)
2452      - added state for seaice package
2453      - synchronized with main branch
2454    o DIVA:
2455      Modif.s in
2456      - the_main_loop.F
2457      - the_model_main.F
2458      and added cost_final_restore.F cost_final_store.F
2459      o With these changes, it is possible to fully separate
2460        the first forward run to compute the cost function (mdthe_main_loop)
2461        and adjoint runs over individual DIVA intervals (adthe_main_loop)
2462        into separate model executions.
2463        This enables better tuning of DIVA to given queue sizes.
2464      o Loss of cost function value in consecutive DIVA runs is
2465        fixed by storing to 'costfinal' file.
2466      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
2467        beginning/end of adjoint integration is accounted for.
2468      The current changes apply to TAF-1.4.26.
2469      TAF has one remaining bug, requiring one manual change
2470      (see MITgcm manual).
2471    o cal: synchronized between MAIN and ecco-branch
2472    
2473    checkpoint48i_post
2474    o Changes to restore differentiability of code w.r.t. previous tag
2475      (mostly adding new routines to make list and replacing
2476      pressure by totPhiHyd).
2477    o Updated and merged grdchk package
2478      - has both ADM and TLM checks
2479      - works for single- and multi-proc.
2480      - output cleaned
2481      - worked successfully for parallel DIVA
2482    o genmake:
2483      - Adding -platform=SP4
2484      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
2485    o Modif. for DIVA:
2486      ctrl_unpack should not be called in intermediate DIVA interval.
2487      (similar thing would apply for active files such as
2488      tbar, sbar, psbar, which should not be reinitialised;
2489      only relevant for ecco-branch)
2490    
2491    checkpoint48h_post
2492    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
2493    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
2494    o Added SEAICE_initialHEFF to pkg/seaice
2495    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
2496    
2497    checkpoint48g_post
2498    --- EOS:
2499    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
2500      store total Potential in totPhyHyd for diagnostics & EOS.
2501    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
2502    --- Pressure/geopotential gradient:
2503    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
2504    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
2505      ( changes results of global_ocean_pressure )
2506    o NLFS + z-coord.: add eta*Rho' contribution.
2507    o accurate phiHyd when using interface-W at the middle between 2 centers
2508     ( changes results of ideal_2D_oce )
2509    o includes r* 2nd term in potential gradient.
2510    
2511    checkpoint48f_post
2512    Merging from release1_p12:
2513    o Modifications for using pkg/exf with pkg/seaice
2514      - improved description of the various forcing configurations
2515      - added basic radiation bulk formulae to pkg/exf
2516      - units/sign fix for evap computation in exf_getffields.F
2517      - updated verification/global_with_exf/results/output.txt
2518    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
2519      (SBO) core products, including oceanic mass, center-of-mass,
2520      angular, and bottom pressure (see pkg/sbo/README.sbo).
2521    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
2522      to avoid negative values in shallow regions.
2523      - updated verification/natl_box/results/output.txt
2524      - updated verification/lab_sea/results/output.txt
2525    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
2526    o Added useSingleCpuIO option (see PARAMS.h).
2527    o Updated useSingleCpuIO option in mdsio_writefield.F to
2528      work with multi-field files, e.g., for single-file pickup.
2529    o pkg/seaice:
2530      - bug fix in growth.F: QNET for no shortwave case
2531      - added HeffFile for specifying initial sea-ice thickness
2532      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
2533    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
2534      kpp_transport_t.F, forward_step.F, and the_main_loop.F
2535    o pkg/seaice:
2536      - adjoint-friendly modifications
2537      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
2538    
2539    checkpoint48e_post
2540    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
2541    o dynamics: change definition of computational domain & adapt mom_fluxform
2542      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
2543    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
2544        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
2545        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
2546        global_ocean.90x40x15 global_with_exf global_ocean_pressure
2547        inverted_barometer solid-body.cs-32x32x1
2548      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
2549    
2550    checkpoint48d_post
2551    o in preparation for r*:
2552     a) use pre-computed gradient of hydrostatic potential:
2553        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
2554     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
2555        => affects results of glob_oce_pressure (different truncation error)  
2556      update output.txt of ideal_2D_oce & global_ocean_pressure
2557    
2558    checkpoint48d_pre
2559    o in preparation for r*:
2560      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
2561      pass the 2 comp. of the grad. as arguments to momentum S/R.
2562      but for the moment, only used if it does not change the results.
2563    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
2564    
2565    checkpoint48c_post
2566    Modifications in treatment of initial flux forcing controls
2567    to avoid extra storing of flux fields.
2568    
2569    checkpoint48c_pre
2570    o Added tidal_basin_2d experiment (currently 1D!)
2571    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
2572    
2573    checkpoint48b_post
2574    o r* coordinate added in #ifdef NONLIN_FRSURF block.
2575     (modification to pressure gradient not yet implemented)
2576    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
2577      (for U & V) that are used for vertical advection of momentum.
2578    
2579    checkpoint48a_post
2580    o In preparation for r*, use temp. array to compute vertical transport
2581       in flux-form momentum pkg. => change results of few test-exp.
2582      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
2583                        lab_sea, natl_box & plume_on_slope
2584    
2585    checkpoint48
2586    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
2587    
2588    checkpoint47j_post
2589    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
2590    o moved adexch from forward_step to addummy_in_stepping
2591    o added exch in ctrl_map_...
2592    o aveFreq.=0. at end of cost_final to avoid overwrite in
2593      reverse checkpointing loop
2594    o Yet more changes in gmredi:
2595      * adgmredi_calc_tensor
2596        avoiding all recomputation of gmredi_slope_limit
2597      * adgmredi_x/y/rtransport
2598        added flag for excessive storing to avoid recomp. of
2599        u/v/rtans, dTdx/y/z
2600        -> this is not really necessary and very memory-consuming
2601      * adgmredi_slope_psi:
2602        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
2603      * gmredi_slope_limit
2604        re-activated full calculation of taperfct for case 'ac02'
2605    o updating verification/ adjoints of carbon, global_ocean.90x40x15
2606    
2607    checkpoint47i_post
2608    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
2609    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
2610      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
2611    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
2612    o gmredi: fix few bugs.
2613    
2614    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
2615    This will be a good checkpoint to plug into the ecco-branch.
2616    o few modif.'s to get latest version adjointed
2617      (mainly kick out code in ini_linear_phisurf)
2618    o modif's to run adjoint with exactConserv
2619    o case GM_BOLUS_ADVEC should be cleaned
2620      S/R gmredi_slope_psi should be cleaned
2621    o verification/carbon now has exactConserv=.TRUE.
2622    
2623    checkpoint47g_post
2624    o time-average AIM output: becomes independent from statvars time-average
2625      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
2626    o After TAF bug fix:
2627      Tested adjoint of gmredi package.
2628      Tests were done with checkpoint47 rather than with latest
2629      checkpoint47f_post since the latter is broken for the adjoint
2630      verification/carbon/ contains both ADM and TLM gradient checks.
2631    Here they are, before they get changed/lost/stolen.
2632    Mostly modif.'s to fix numerical sensitivities.
2633    Gradient checks OK for
2634    - GM_taper_scheme:
2635      * clipping
2636      * ac02
2637      * linear
2638      * glw91
2639      * dm95
2640      * ldd97
2641    - GMREDI_OPTIONS:
2642      * GM_VISBECK_VARIABLE_K
2643      * GM_NON_UNITY_DIAGONAL
2644      * GM_EXTRA_DIAGONAL
2645      * GM_BOLUS_ADVEC
2646    in conjunction with data.gmredi parameters to be checked in
2647    in a few minutes under verification/carbon/code/
2648    
2649    checkpoint47f_post
2650    Merging from release1_p10:
2651    o modifications for using pkg/exf with pkg/seaice
2652      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
2653        and SEAICE_EXTERNAL_FLUXES
2654      - pkg/exf CPP options EXF_READ_EVAP and
2655        EXF_NO_BULK_COMPUTATIONS
2656      - usage examples are Experiments 8 and 9 in
2657        verification/lab_sea/README
2658      - verification/lab_sea default experiment now uses
2659        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
2660    
2661    checkpoint47e_post
2662    o created a tag prior to creating a branch
2663    
2664    checkpoint47d_post
2665    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
2666      at the bottom boundary had an erroneous half slip boundary condition
2667    o added bottom drag and no slip boundary condition capabilities to
2668      oceanic pressure coordinates code
2669    o added new verification experiment global_ocean_pressure, this experiment is
2670      also described in the tutorial section of the manual
2671    checkpoint47d_pre
2672    
2673    checkpoint47c_post
2674    o Added a verification experiment for a global cubed-sphere ocean run
2675      -  verification/global_ocean.cubed32x32x30
2676      -  uses pkg/therm_seaice and pkg/bulk_forcing
2677    
2678    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
2679    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
2680      when using P-coordinate; only implemented for atmospheric config.
2681    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
2682      NOTES: requires option NONLIN_FRSURF to be "#define".
2683    o update advect_xz/results/output.txt (left from checkpoint44g_post)
2684    
2685    checkpoint47b_post
2686    Merging from release1_p9:
2687    o pkg/seaice
2688      - removed GOTO's and added taf directives
2689      - double precision constants to reduce the g77 (Linux)
2690        to F77 (SGI) differences reported in release1_p8
2691    o tools/genmake
2692      - added SGI options
2693    o verification/testscript
2694      - updated to that of checkpoint47a_post
2695    o verification/global_ocean.90x40x15/input/eedata
2696      - modified for SGI f77 compatibility
2697    o verification/lab_sea
2698      - added description of sea-ice model
2699      - added missing matlab routines
2700      - added test of thermodynamics parallelization
2701    
2702    checkpoint47a_post
2703    o new pkg: aim_v23
2704     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
2705       for now, keep the same surface forcing as before.
2706     - Part-Cell implemented into AIM; check that Heat & Water are conserved
2707     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
2708     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
2709    o add diagnostic of surface correction term in monitor output
2710    
2711    o bulk_force and therm_seaice
2712    - Two packages:  bulk_force (Bulk forcing)
2713      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
2714    - Earlier integration from Stephaine Dutkiewicz
2715      and Patrick Heimbach.
2716    - Two ifdef statements for compile time,
2717       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
2718    
2719    checkpoint47
2720    differentiable version of checkpoint46n_post
2721    o bug fix in quasihydrostaticterms
2722    o * "clean" adjoint code (in terms of extensive recomputations)
2723        can now be obtained for all GMREDI options (i.e. for
2724        - GM_VISBECK_VARIABLE_K
2725        - GM_NON_UNITY_DIAGONAL
2726        - GM_EXTRA_DIAGONAL
2727        - GM_BOLUS_ADVEC )
2728      * However, wrong gradient check problem remains unsolved.
2729      * New CPP options have been introduced for different
2730        tapering schemes
2731    o external_fields_load now part of differentiation list
2732    o pressure needs multiple storing;
2733      would be nice to have store_pressure at beginning or
2734      end of forward_step, e.g. by having phiHyd global (5-dim.)
2735      (NB: pressure is needed for certain cases in find_rho,
2736      which is also invoked through convective_adjustment).
2737    o recomputations in find_rho for cases
2738     'JMD95'/'UNESCO' or 'MDJWF' are OK.
2739    o #define ATMOSPHERIC_LOADING should be differentiable
2740    o ini_forcing shifted to begining of initialise_varia
2741    o Incorporating QNVS line search routines into MITgcm
2742      (this is separate code, and therefore not under pkg)
2743      lsopt/, optim/
2744    o Updated verification/carbon/
2745      - #define GM_VISBECK_VARIABLE_K
2746      - GM_taper_scheme    = 'ldd97'    
2747    
2748    checkpoint46n_post
2749    Merging from release1_p8:
2750    o verification/natl_box:
2751      updating new external_fields_load routine
2752    o New package: pkg/seaice
2753      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
2754      The sea-ice code is based on Hibler (1979-1980).
2755      Two sea-ice dynamic solvers, ADI and LSR, are included.
2756      In addition to computing prognostic sea-ice variables and diagnosing
2757      the forcing/external data fields that drive the ocean model,
2758      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
2759      The implied surface heat flux is then stored in variable
2760      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
2761      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
2762      non-local transport term.  Because this call precedes model
2763      thermodynamics, temperature under sea-ice may not be "exactly" at
2764      the freezing point by the time theta is dumped or time-averaged.
2765      N.B.: fairly large differences in accuracy occur across
2766            different platforms/compilers; comparison between
2767            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
2768            generated output gives:
2769       T           S           U           V
2770      C D M    c        m  s        m  s        m  s        m  s
2771      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
2772      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
2773      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
2774    
2775      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
2776    o GAD:
2777      - generated new common blocks to account for call of
2778        same gad routines with differing traceridentities
2779        (needed to modify tracerIdentity indices in GAD.h)
2780      - generated separate common blocks for case useCubedSphereExchange
2781        (Department of Futurology)
2782      - parameter lists to gmredi_?transport: added tracerIdentity
2783      - added new key indices to tamc.h
2784    o external_fields_load:
2785      - added this routine to TAF list
2786      - needed to make some common blocks global and additional storing
2787        along the same lines as exf package (checkpoint_lev?_directives.h)
2788    o exf:
2789      updated external forcing package
2790      - bug fixes carried over from ecco-branch
2791        (missing OBCS_OPTIONS.h in two routines)
2792      - enable easy to use "no forcing".
2793      - added exf I/O for atmospheric loading
2794      - added exf I/O for runoff data
2795      - transfered scaling between exf <-> MITgcm to exf namelist
2796    o Adding new verification experiment global_with_exf.
2797      This verification experiment is almost identical to the
2798      global_ocean.90x40x15 experiment, except that it uses
2799      the exf (and cal) package instead of the
2800      external_fields_load routine (cf README file).
2801    
2802    checkpoint46m_post
2803    o modified testscript to return -- when there are no lines of "%MON" output
2804    o added new flag "quasiHydrostatic" for QH mode
2805      and new routine quasihydrostaticterms()
2806    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
2807      New routine: mom_u_coriolis_nh()
2808    o fixed sign of non-hydrostatic metric terms in u and v equations.
2809      Depend on correct sign of gravitySign.
2810    o added work.pc* to .cvsignore in aim directories using ifc
2811    o introduced flag for controllin non-hydrostatic metric terms
2812    o removed gravitySign from PARM04
2813    o switched to g77/ifc from pgf77 in aim experiments
2814    
2815    checkpoint46l_post
2816    o made convective adjustment work with pressure coordinates:
2817     - changed the direction of k-loop in convective_adjustment.F for the
2818       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
2819     - adjusted the reference pressure k-index in convective_adjustment.F
2820     - adjusted the convection condition in convect.F (in analogy to
2821       calc_ivdc.F)
2822     - convective_adjustment no longer computes anything on the halos
2823     - removed the warnings about negative salinity from find_rho.F and
2824       find_alpha.F; instead the new routine look_for_neg_salinity, called
2825       at the beginning of find_rho, find_alpha, and find_beta, does a
2826       check of the entire slice, if CPP-option
2827       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
2828    checkpoint46l_pre
2829    
2830    checkpoint46k_post
2831    o fixed the verification/global_ocean.90x40x15 experiment:
2832     - new bathymetry (the world according to A., JMC, and M.)
2833     - new initial fields and forcing fields (*.bin files)
2834     - new POLY3.COEFFS (for the next release one should switch to a full
2835       equation of state: JMD95P or MDJWF)
2836     - fixed several errors and redundancies in the data file
2837     - experiment uses looped cells
2838     - added matlab directory with diagnostic scripts for plotting of output
2839    
2840    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
2841     - read AIM physics parameters from a file (data.aimphys)
2842     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
2843    
2844    checkpoint46j_post
2845    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
2846    o move wVel computation at the end of the time step, in S/R integr_continuity
2847    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
2848    o update timeave pkg for wVel diagnostic.
2849    checkpoint46j_pre
2850    
2851    checkpoint46i_post
2852    o Clean up AIM package (and keep the results unchanged):
2853      include CPP_OPTION and use IMPLICT NONE in all routines ;
2854      declare all the variables _RL ; use _d 0 for all numerical constants.
2855      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
2856    
2857    checkpoint46h_post
2858    o cleaned up the use of rhoNil and rhoConst.
2859      - rhoNil should only appear in the LINEAR equation of state, everywhere
2860        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
2861        and the dynamical equations are all divided by rhoConst
2862    o introduced new parameter rhoConstFresh, a reference density of fresh
2863      water, to remove the fresh water flux's dependence on rhoNil. The default
2864      value is 999.8 kg/m^3
2865    o cleanup up external_forcing.F and external_forcing_surf.F
2866      - can now be used by both OCEANIC and OCEANICP
2867    checkpoint46h_pre
2868    
2869     Added code to convert surface volume flux (fresh water) into
2870     a mass flux when using P coordinates in the ocean (OCEANICP).
2871     Note: It assumes you have set rho0=rhoConst=density of fresh water.
2872    
2873    checkpoint46g_post
2874    o Include a new diagnostic variable phiHydLow for the ocean model
2875      - in z-coordinates, it is the bottom pressure anomaly
2876      - in p-coordinates, it is the sea surface elevation
2877      - in both cases, these variable have global drift, reflecting the mass
2878        drift in z-coordinates and the volume drift in p-coordinates
2879      - included time averaging for phiHydLow, be aware of the drift!
2880    o depth-dependent computation of Bo_surf for pressure coordinates
2881      in the ocean (buoyancyRelation='OCEANICP')
2882      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
2883        Theta, Salinity, and Pressure in the parameter list. This routine is
2884        presently contained in find_rho.F. This routine does not give the
2885        correct density for 'POLY3', which would be a z-dependent reference
2886        density.
2887    o cleaned up find_rho
2888      - removed obsolete 'eqn' from the parameter list.
2889    o added two new verification experiments: gop and goz
2890      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
2891    checkpoint46g_pre
2892    
2893    checkpoint46f_post
2894    o Enable tangent linear (forward mode) gradient checks:
2895      - extended active file handling to g_... files
2896      - added TANGENT_SIMULATION to theSimulationMode
2897      - extended grdchk package accordingly
2898    o added tangent linear setup in verification/carbon/code_ftl
2899    o added adjoint setup in verification/front_relax/code_ad
2900    
2901    checkpoint46e_post
2902    o Added new equation of state -> MDJWF
2903      - EOS of McDougall et al., 2002, JAOT, submitted
2904      - caveat: the equation of state is only valid for a smaller (more
2905        realistic?) range of values than JMD95P/Z and UNESCO
2906      - added masks to the calculation of pressure in store_pressure
2907      - added more check values for density in check_eos (ini_eos.F), some of
2908        the old check values are out of the range of the MDJWF-eos, so don't
2909        expect perfect matches for those
2910    checkpoint46e_pre
2911    
2912  checkpoint46d_post  checkpoint46d_post
2913  o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and  o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
2914    'OCEANICP', also initialised field pressure correctly in ini_eos in the    'OCEANICP', also initialised field pressure correctly in ini_eos in the
# Line 26  checkpoint46c_pre Line 2932  checkpoint46c_pre
2932    
2933  checkpoint46b_post  checkpoint46b_post
2934  o Added new equation of state -> JMD95Z and JMD95P  o Added new equation of state -> JMD95Z and JMD95P
2935    - EOS of Jackett and McDougall, 1995, JPO    - EOS of Jackett and McDougall, 1995, JAOT
2936    - moved all EOS parameters into EOS.h    - moved all EOS parameters into EOS.h
2937    - new routines ini_eos.F, store_pressure.F    - new routines ini_eos.F, store_pressure.F
2938  o Added UNESCO EOS, but not recommended because it requires  o Added UNESCO EOS, but not recommended because it requires

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