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revision 1.55 by heimbach, Fri Jan 18 22:13:27 2002 UTC revision 1.841 by gforget, Wed Jun 20 19:39:04 2007 UTC
# Line 1  Line 1 
1  $Header$  $Header$
2    $Name$
3    
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    o pkg/ecco: cost function when applying pkg/smooth to controls
8    o pkg/ctrl: add forcingPrecond run time parameter
9    o pkg/seaice:
10     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
11     - fix bug in metric terms of u-equation in LSR solver (implicit part),
12       changes verification/lab_sea
13     - rearrange implicit part of u-equation in LSR solver to make it easier to
14       read, understand, and debug. This causes changes at the truncation level.
15     - fix (serious) bug in the boundary conditions (sign error in the implicit
16       part) of the LSR solver. Changes all LSR results.
17     - fixed problem with HSNOW initialization to avoid thick snow when AREA
18       is initilized with small values - does not change lab_sea results.
19     - added HsnowFile initialization capability
20    o pkg/smooth: addition to model/src and pkg/ctrl so allow
21     initialization of pkg/smooth and application to control vector
22    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
23    o dependencies: pkg/profiles requires pkg/cal
24    o pkg/profiles:
25     - added option ALLOW_PROFILES_GENERICGRID
26         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
27         that interpolation information (grid points and coefficients) is provided
28         within the netcdf input files.
29         -> sample matlab scripts can be found in MITgcm_contrib/gael
30         that allow you to prepare netcdf input files.
31     - also modified: cleaner include statements, cleaner error print statements,
32       cleaner stops when error, and more tests of the netcdf input files consistency.
33    
34    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
35    o pkg/seaice:
36     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
37       requires a new routine: seaice_diagnostics_fill.F
38     - make sure that seaice does not move if not forced (pressure replacement
39       method, Hibler and Ip, 1995), changes results
40     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
41     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
42       It is turned off by default (=-1.), because it changes the results.
43     - make it possible to read AREA from a file, too.
44    
45    checkpoint59c
46    o add S/R and diagnostics for oceanic mixed-layer depth
47    o move GMRedi call after all vertical mixing schemes (including KPP)
48    o pkg/thsice:
49     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
50      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
51    o pkg/obcs:
52     - bug fix for balance code
53    o pkg/seaice:
54      - allow values of SEAICE_elasticParm > 1
55      - add new parameter SEAICE_evpTauRelax as an alternative
56        to SEAICE_elasticParm
57      - make lsr boundary conditions free slip (by default), changes result
58      - add code for no slip boundary conditions for lsr
59      - set minimum of zeta to zero (and not 4e8) (changes results)
60      - add a cap on AREA after advecting AREA if seaice_growth is not called
61    o change calculation of Visbeck K:
62      - no longer depend on tapering scheme; instead, compute slope (limited
63        by GM_maxSlope). this is equivalent to what was comuted before with
64        clipping or linear tappering.
65      - fix vertical averaging (wrong by 1/2 level)
66      - leave the old version (but will not be maintained) within
67        #ifdef OLD_VISBECK_CALC / #endif
68      - update output of exp. ideal_2D_oce
69    o change error catch in calc_r_star to improve vectorization
70    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
71      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
72    o adjoint:
73      Re-organized adjoint checkpointing according to Matt Mazloff
74      (but with modifs/completions/cleanups)
75      Storing is now bundled into large arrays to optimized I/O
76      (and second step in cleanup of the_main_loop)
77    
78    checkpoint59b
79    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
80      - export/import (between ocean & coupler) fields needed for ocean DIC.
81    o pkg/seaice:
82      - get rid of three more exchanges seaice_calc_viscosities (required
83        different loop boundaries in seaice_lsr and seaice_ocean_stress)
84      - bug fix in seaice_ocean_stress (update of lab_sea required)
85      - reduce loop boundaries to necessary minimum also in seaice_evp
86      - go back to the old way of computing deltaC/Z as the adjoint likes that
87        better
88    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
89      passive tracer to an Age Tracer) + update output.txt
90    o pkg/exf:
91      - implement A-grid / C-grid selection for wind-stress input files.
92      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
93      for now, in exf_bulk_largeyeager04.F only :
94      - change implementation for case where windspeed + 2. components wind-stress
95        are read-in. AND use rhoConstFresh to convert evap.
96    o pkg/seaice:
97      - use correct EXCH_UV for wind-forcing (on A-grid).
98      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
99        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
100    o pkg/exf:
101      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
102      EXF_INTERPOLATION:
103      - merge global_with_exf/code version of exf_interp_read.F
104        to the main code ;
105      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
106        reading the file ; Important: This options needs to be defined to recover
107        previous code.
108        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
109      - no longer loose real*8 precision along the way when using exf_iprec=64.
110    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
111      - change discretisation of evp-solver in order to avoid another exchange
112        (changes lab_sea) and clean up a little
113      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
114        help the adjoint (this also changes the results slightly)
115      - add a few "_d 0" where they had been missing in seaice_evp.F
116      - cleaning up: remove unused seaice_calc_rhs.F
117    o pkg/exf: some cleaning-up:
118      - change various "constants" into runtime parameters
119      - cleaned-up Large&Yeager04 routine which should eventually
120        replace exf_bulkformulae.F (changed names of S/R and CPP)
121        and merged various ALLOW_ATM_WIND options
122     only used with thsice pkg (in thsice_get_exf.F):
123      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
124        which are used when useStabilityFct_overIce=TRUE (= the default)
125      - change default values of ice & snow emissivity and scale downward LW
126        by ice & snow emissivity.
127    o pkg/thsice:
128     fix few little problems, in thsice_calc_thickn.F:
129      - growth vertically (and not laterally) if iceFrac == iceMaskMax
130      - melt only laterally if hIce < hThinIce (as the comments say)
131      and in thsice_extend.F:
132      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
133      - start to form ice as soon as the minimum ice-volume is reachable.
134     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
135      and cpl_aim+ocn
136    o pkg/kpp
137     - move computation of surface related input fields to KPP into a new
138       subroutine kpp_forcing_surf.F
139     - remove wrong (within bi,bj loops) EXCH calls.
140     - little cleaning (add argument myThid in last position, cvs header ...)
141     - for now, fix conservation problem by exchanging KPPviscAz (may not
142       be the best fix)
143    o pkg/seaice
144     - check for inconsistent evp parameter/cpp-flag combination
145     - remove leftover errIO flat for obsolete name list error handling
146    o OpenAD
147     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
148    
149    checkpoint59a
150    o pkg/seaice: some parameter clarifications and a little bit of clean up
151    o pkg/thsice: rename run-time parameters:
152       himin       -> hIceMin
153       himin0      -> hThinIce
154       hihig       -> hThickIce
155       i0          -> i0swFrac
156       transCoef   -> bMeltCoef
157       frac_energy -> fracMelting
158      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
159       with default values (for now) that do not change the results.
160      remove old version of thsice vars advection in pkg/seaice.
161    o in FFIELDS.h:
162      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
163      - make pLoad & sIceLoad always available (but still only used if
164         ATMOSPHERIC_LOADING is #define).
165    o pkg/kpp: replaced _KPP_RL with _RL
166    o bug fixes for vertical diffusivity computations when both KPP and
167        3D diffusivity arrays are used.
168    o pkg/seaice: fix bug in evp solver, while doing that
169      - change (improve?) discretization of stress computations for both
170        cgrid-lsr and evp solver
171      - add a new routine to compute strain rates
172      - the above changes lab_sea results
173      - add no slip conditions for evp solver (off by default), lsr-version
174        may follow
175      - fix exchange for shear at Z-points (does not change lab_sea)
176      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
177        (to force the user to pick a time step since there is not "safe" way
178        of choosing it)
179      - add principal stress diagnostics
180      - rearrange fields for evp a little to avoid having to call a: too many
181        exchanges and b: exchanges for stress trensor components which we do
182        not have.
183      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
184        of evp, complete rewrite for lsr case (latter is does not yet work
185        in all cases)
186    o pkg/kpp: add code to have mixing in shelf ice caverns
187      - add myThid to all kpp routines (long overdue)
188    
189    checkpoint59
190    o pkg/exf:
191      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
192        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
193      - move exf header files from lower_case.h to UPPER_CASE.h ;
194        add missing cvs Header & Name
195      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
196      - add namelist param. selectStressGridPosition, exf_monFreq
197      - retire many _CLIM routines, and remove data.exf_clim
198        + params moved to data.exf
199        + climsst, climsss now handled by exf_set_gen, i.e.
200          climss?period=0 refers to constant field,
201          climss?period=-12 to monthly forcing
202      - split up namelists in data.exf
203    o pkg/seaice:
204      - remove seaice_exch and seaice_exch_uv
205      - remove superfluous exchange of theta
206      - add myThid to seaice_budget_ocean/ice
207      - add new interface for atmospheric wind forcing (C-grid only)
208        + new routine
209        + two new field (taux, tauy for stress over ice)
210        + removed one global field (DAIRN) for C-grid case only
211    o pkg/thsise
212      - 2nd set of modifs for thsice adjoint in conjunction with exf
213    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
214    
215    checkpoint58y_post
216    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
217      vertical diffusivity, similar to that in MOM4; turned on using
218      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
219      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
220    o Added capability for 3D specification of background vertical diffusion
221      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
222      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
223      "data" file that contains the 3D vertical diffusivity coefficients.
224    o ice dynamics (pkg/seaice) with thsice thermodynamics:
225      - add code within pkg thsice to advect & diffuse sea-ice fields
226      similar to (and will replace) what has been added in  seaice_advdiff.F,
227      but: - conserving Mass, Heat & Salt.
228           - better when using non-linear advection scheme (not yet fully tested)
229           - can also be used in atmospheric set-up (for now, only the diffusion).
230    
231    checkpoint58x_post
232    o IO option for global-file compact format:
233      - add options when generating topology (utils/exch2/matlab-topology-generator)
234      - add I/O capability (pkg/mdsio).
235      - adapt utils/matlab/rdmds.m to read this format.
236      for now long-line format not yet supported by pkg/mdsio (& exch2).
237    o shelfice: add a few diagnostics
238    
239    checkpoint58w_post
240    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
241      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
242      (and replace horiVertRatio in NH code).
243      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
244                         and tutorial_plume_on_slope (sensitive to truncation)
245    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
246      directly to drive seaice model (C-grid only)
247    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
248     - reintroduce computation of wind from stress,
249     - compute tau (in exf_bulkformulae.F) from windstress averaged to
250       mass points to avoid tau = 0
251     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
252    o rdmnc.m: make it work with "global" files created with gluemnc
253    o rdmnc.m : some improvements in dealing with singleton dimension
254      (tested on all testreport mnc output files).
255    o genmake2: disable pkg/profiles if netcdf test fails.
256    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
257    o move call to cal_readparms up to make calendar parameters/variable available
258      to all packages
259    
260    checkpoint58v_post
261    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
262      useDynP_inEos_Zc tested.
263    o pkg/exf: changes to properly interpolate/mask/scale initial fields
264    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
265      and portions thereof.  See read_cs.txt for description and examples.
266    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
267      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
268      following the great-circle arc between those 2 points.
269    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
270      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
271    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
272     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
273     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
274     - still needs work (not working with some options ; efficiency to improve)
275       and serious testing.
276     - use this scheme for temperature & salinity in 2 advection test exp.:
277       advect_xy & advect_xz, respectively.
278    
279    checkpoint58u_post
280    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
281    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
282    o testreport: add option "-skipdir" to skip some test.
283    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
284      momentum calculation.
285    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
286    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
287      remove checkpoint.F and the_correction_step.F (no longer used);
288      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
289    o add option (linFSConserveTr) to correct for tracer source/sink due to
290      Linear Free surface
291    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
292    o pkg/thsice: fix reading mnc-pickups
293    
294    checkpoint58t_post
295    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
296    o pkg/mdsio:
297     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
298       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
299       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
300     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
301     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
302       either MDS_READ_FIELD or MDS_WRITE_FIELD )
303     - new S/R (to replace MDSWRITEMETA), which allows to write more
304       informations (variable names, time ...) to meta files.
305     - modify rdmds.m to give back the meta file content.
306    o pkg/diagnostics: change vertical interpolation to be safer, and more
307       flexible (define p-levels to interpolate to in data.diagnostics);
308      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
309       diagnostic pointer.
310    o pkg/seaice: more cleaning up of seaice_growth, added many comments
311    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
312    o fix multi-category seaice:
313     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
314       SEAICE_MULTICATEGORY
315     - fix short wave heat flux
316    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
317       and allow to use EVP solver. Change forward lab_sea: test both EVP
318       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
319    o Initial check-in of lab_sea adjoint
320      (very similar to natl_box_adjoint/code_seaice)
321      * used C-grid and EVP solver
322      * used KPP, GM/Redi
323      * uses inAdExact=.TRUE.
324      * gradient checks fail for both ADM and TLM
325        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
326        f.d. gradients actually seem more problematic than ADM, TLM gradients;
327        issue is related to forward mismatch between g77 an ifort
328    o pkg/seaice: overhaul of thermodynamics
329     - growth.F and groatb.F are replaced by new routine seaice_growth.F
330     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
331     - move a few global fields out of SEAICE.h into seaice_growth.F and
332       make them 2D (FICE/QNETO/ ...)
333     - remove FO (it is the same as QNETO)
334     - introduce a few local fields to avoid modifying external fields such
335       as atemp, etc.
336    
337    checkpoint58s_post
338    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
339      changed exf_set_gen.F so that
340        genperiod=0 means input file is one time-constant field and
341        genperiod=-12 means input file contains 12 monthly means
342    o CG2D: use pre-computed solver main-diagonal (stored in common block);
343      this affects truncation error ; generate new output file for exp. which
344      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
345        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
346        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
347        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
348        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
349        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
350    o start implementation of deep-atmosphere and anelastic formulation
351    o verification: remove 2nd copy of input files and use script "prepare_run"
352      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
353    o mom_common/vecinv/fluxform: fix a few initialisation isssues
354    o profiles: fix for multithreaded case
355    
356    o diagnostics: rename few diags:
357      s/'PRESSURE'/'RCENTER '/g
358      s/'TICE    '/'oceFreez'/g
359      s/'TAUX    '/'oceTAUX '/g
360      s/'TAUY    '/'oceTAUY '/g
361      s/'SWFLUX  '/'oceQsw  '/g
362      s/DIFx/DFxE/g
363      s/DIFy/DFyE/g
364      and add few ocean-forcing diagnostics:
365      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
366    o modifications to pkg/seaice/growth.F and budget.F, which change results of
367      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
368      as actual snow thickness.  It now refers everywhere to effective snow
369      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
370    
371    checkpoint58r_post
372    o modifications to pkg/seaice/growth.F, which change results of
373      lab_sea experiment: fixes pertain to melting snow over open water, to
374      masking EVAP under sea ice, and to using the correct AREA variable for
375      computations of EVAP, PRECIP, HSNOW, and GHEFF
376    o add ability to read bathy, salt, and theta using MNC (off by def)
377    o add flooding algorithm and advection of HSNOW for pkg/seaice;
378      both are turned off by default and do no change any results
379    o seaice advection with pkg/thsice: a step toward the use of non-linear
380      advection scheme, but #ifdef or commented out for now (requires more EXCH).
381    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
382      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
383      in natl_box (affects results @ truncation level: update output.txt)
384    o multi-threading and IO:
385      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
386      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
387        (needed to work with SingleCpuIO): tested in all verif. exp.
388    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
389      affects the results (but none of the verification test uses this scheme).
390    o Adding some pkg/diagnostics capability to pkg/seaice
391      (will certainly be subject to changes)
392    o ctrl: adding new control variables:
393      lwflux, lwdown, evap, snowprecip, apressure, runoff
394    
395    checkpoint58q_post
396    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
397      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
398      high_res_cube configuration by 4% on Columbia.
399    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
400      add (in global_with_exf/code) a version of EXF_INTERP_READ without
401      dynamical allocation (seems to work in multi-threaded).
402    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
403      single CPU io) so that TAF does not have to see EESUPPORT.h
404    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
405    
406    checkpoint58p_post
407    o obcs: stop if obcs is used with useCDscheme = .true.
408    o shelfice:
409     - fix a sign error so that no slip at shelfice interface works
410     - remove stop for combination non-hydrostatic code and shelfice. That does
411       not mean, that the results are correct, but at least they are numerically
412       stable
413    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
414    o added adjoint exch routined for all exch*3d* routines
415      and updated flow directives
416    
417    checkpoint58o_post
418    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
419      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
420    o change controling S/R for writing pickup file (new S/R do_write_pickup)
421      and clean-up reading/writing of pickup files.
422    o fix local version of read/write pickup (NH part) in rotating_tank/code
423    o simplify EXCH interface:
424     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
425     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
426    o added the regrid package
427    o shelfice:
428     - add a simple boundary layer scheme to reduce noise
429     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
430    
431    checkpoint58n_post
432    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
433       local variable (not in common block).
434    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
435      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
436      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
437        to work with SingleCpuIO.
438    o add "_d 0" to real constant of pkg/cfc subroutines ;
439       update exp. cfc_exemple & tutorial_cfc_offline output files.
440    o multi-threading and IO:
441      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
442        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
443      - barrier before and after reading.
444      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
445      - avoid using MDS_WRITELOCAL for LAND pkg output.
446      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
447        common-block variables ; Allows multi-threading with master-thread IO.
448    o change default MAX_NO_THREADS from 32 to 4 ;
449      and stop cleanly when MAX_NO_THREADS is too small.
450    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
451    
452    checkpoint58m_post
453    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
454       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
455    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
456       keep global_ocean.90x40x15 (for AD testing) with former secondary test
457       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
458    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
459        add MITgcm_tutorials (= code + all the tutorials)
460    o ecco, option to compute cost for total ssh (mean+anom)
461    o consistent with addition of ptracer and ssh in pkg/profiles
462    o profiles: adding ptracer and ssh
463    o testreport: change multi-test output-file name
464      (from output.txt.{name} to output.{name}.txt)
465    o profiles: now ok for mutli-tiles case
466    o seaice: add 4 parameters for different advection schemes for area,
467      (effective) seaice thickness, enthalphy, and snow height. Their default
468      is the standard parameter SEAICEadvScheme
469    o calc_gw:
470     - add cosFacU in zonal viscous flux (harmonic.visc.).
471     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
472       of tutorial_plume_on_slope.
473    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
474    o calc_gw: true flux-form, account for horizontal grid spacing.
475      update rotating_tank results, but not plume_on_slope (affected at
476      truncation level, 11 digits).
477    
478    checkpoint58l_post
479    o calc_gw:
480     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
481     - remove side-drag for now (need to fix it); update plume_on_slope results.
482     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
483    o commit code to make SST/SSS weights spatially variable
484      (based on either variable in-situ or variable initial T/S weights)
485    o pkg/ecco:
486      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
487        now based on horizontally varying weights wthetaLev, wsaltLev
488      * cost_averagesflags now returns year indices in addition to day, month
489      * sflux balance is performed on annual basis
490        (sflxumm, sfluxmm2, bal_sfluxmm)
491      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
492        including separate counting and multipliers
493    o pkg/rbcs
494      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
495    
496    checkpoint58k_post
497    o testreport:
498     - always build in dir. "build" (if not there, mkdir build instead of building
499       & running in input)
500     - run in dir run (if it exists), in build otherwise.
501     - call prepare_run (if input/prepare_run exists)
502     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
503    o pkg/exf modifications to interpolation and rotation routines for more
504       reasonable treatment of North Pole singularity: for tracers North Pole
505       value is set to northernmost zonal-mean value, for zonal velocity it is
506       set to zero, and for meridional velocity it is set to northernmost value.
507    o pkg/exf/exf_check_range.F
508     - add tile index to diagnostics and move stop statement to the very
509       end of the routine.
510    o pkg/diagnostics: (diagnostics_main_init.F)
511      define title of isomorphic variables according to the current config.
512    o pkg/thsice with pkg/seaice dynamics:
513    - fix domain of computation (interior only, required for exf) and do exchanges
514    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
515    o towards a standard way of dealing with multi-threading in MONITOR
516      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
517    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
518       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
519    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
520    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
521    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
522       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
523    o tracer advection:
524     - clean-up and simplify calc_common_factors.F
525     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
526       advection subroutine (but still not used within DST advection S/R)
527    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
528    
529    checkpoint58j_post
530    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
531      from file (collects calls previously in FORWARD_STEP)
532    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
533    o adjoint store dir. adjusted accordingly
534    o genmake2
535      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
536    
537    checkpoint58i_post
538    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
539      on wind stress (SEAICEstressFactor defaults to 1.)
540    o Total number of Timers is finite (<=40): comment out 2 non-essential one
541      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
542    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
543      on CS-grid: no longer loosing mass.
544    o exf & curvilinear-grid: no longer modify longitude xC & xG.
545    o pkg/ggl90: fix sloppy output and fix a bug
546    o pkg/seaice: added SEAICEuseEVPpickup parameter
547      - Set to false in order to start EVP solver with
548        non-EVP pickup files when using SEAICEuseEVP
549      - fix sign error in diffusion in seaice_calc_rhs
550    
551    checkpoint58h_post
552    * Modifications for bottom topography control
553      o replace hFacC by _hFacC at various places
554      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
555      o add non-self-adjoint cg2d_nsa
556      o update autodiff support routines
557      o re-initialise hfac after ctrl_depth_ini
558      o works for 5x5 box, doesnt work for global_ocean.90x40x15
559    * Adding verification for 5x5 box (4-layer) bottom topography control
560    
561    checkpoint58g_post
562    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
563       used for mean seasonal cycle, mean diurnal cycle); add an example
564       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
565    o pkg/ggl90:
566      - add parameter (minimum surface kinetic energy)
567      - fix bug (avoiding division by zero)
568    o couple pkg/thsice to pkg/seaice:
569      - modify advection in seaice to accomodate new scalar fields to be advected
570      - only muliDimAdection scheme work with seaice/thsice
571      - mapping of thsice-variables to seaice-variables, back and forth
572      - does not break the verification experiments, but does not give the
573        desired results either
574    o pkg/seaice
575      - make (default) second order advection a bit less confusing?
576    
577    checkpoint58f_post
578    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
579      to pkg/seaice):
580      - new routines thsice_map_exf and thsice_get_exf provide the interface
581      - add an additional formal parameter to thsice_solve4temp
582    o pkg/exf:
583      - add new fields wspeed, snowprecip (to be able to couple to thsice)
584      - correct Stefan-Boltzmann constant
585      - new parameter for longwave surface emittance
586      - separate some stuff from exf_bulkformulae into new routines  
587        exf_radiation, exf_wind
588      - add new parameters and constants: longwave emissivity for ocean, ice
589        and snow, evaporation parameters over ice
590      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
591        either wind from stress or stress from wind
592    o pkg/thSIce:
593    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
594    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
595       and THSICE_CALC_THICKN
596    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
597    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
598      to make debugging easier.
599    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
600    o pkg/bulk_force:
601      - clean-up comments and parameters ;
602      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
603    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
604      generate new output for test-experiment: aim.5l_cs.thSI
605    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
606      testreport accordingly
607    
608    checkpoint58e_post
609    o SEAICE_CGRID adjoint done
610    o R_STAR adjoint implemented.
611      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
612      * need to sort out init. of h0facc, etc.
613    o Make pkg/profile fully independent of ecco,cost, etc. stuff
614      to be able to use it in pure forward.
615    
616    checkpoint58d_post
617    o upgrade simple test-experiment to tutorial example:
618     step.1: duplicate the experiment and (step.2) will remove the old copy.
619      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
620      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
621      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
622      tutorial_global_oce_biogeo    <- copy of dic_example
623      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
624      tutorial_plume_on_slope       <- copy of plume_on_slope
625      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
626      tutorial_global_oce_optim     <- empty for now (David ?)
627      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
628     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
629    o correct a sign problem in cost_scat.F
630    o obcs and ptracers: fix boundary conditions for advections schemes
631      with larger stencil
632    o thsice adjoint: start
633    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
634      completeness
635    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
636      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
637    o ptracers adjoint:
638      * avoid extensive recomputatations
639      * fix missing re-init. of gptr (missed by TAF)
640    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
641      me to turn off the excessive output to STDOUT that this package produces
642    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
643      and add those terms in Vector-Invariant formulation.
644    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
645      if the control period (xx_hfluxperiod etc) is 0
646    o in profiles pkg, clean routines and fix details
647    o in ecco pkg, reading ssh data:
648      fix problem in case the model does not start at iter0=0
649    o fix mnc-pickup/restart for ptracers
650    o new package prifiles:
651      code to compute profile-based cost by Gael Forget
652      (modifs in ecco, ctrl, autodiff)
653    o Benign bug fix in initialization (spotted by M. Mazloff) of
654      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
655    
656    checkpoint58c_post
657    o adjoint: finish NLFS adjoint and provide reference output in
658      verification/global_ocean.90x40x15/results_ad_nlfs
659    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
660      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
661      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
662      with SEAICE_CGRID defined.
663    o move calendarDumps from "data" to "data.cal" and clean-up the code
664      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
665    o add useEXF & useCAL flags (for now, set in hard-coded way)
666    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
667      (were missing in NH mode, and wrong in quasihydrostatic mode).
668      waiting for Chris updated version of calc_gw to add those CALLs.
669    o fix bug in quasihydrostatic S/R ;
670      add a test for this option: global_ocean.90x40x15.qshyd
671    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
672      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
673    o add on/off flag useOffLine for package OFFLINE
674    o seaice:
675      - modify advection so that it works also on the C-grid
676      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
677        problem in multi-tile runs with C-grid
678      - add flags for clipping ice velocities and/or masking solver forcing
679      - fix drag (ocean on ice) formulation and a bug that caused noise in the
680        C-grid solver
681      - added a few comments to seaice_diffusion.F
682      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
683        are now exclusive)
684      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
685        required re-ordering the code a little:
686       + make DAIRN global variable (defined in SEAICE)
687       + move computation of the viscosities eta and zeta into a new separate
688         routine (because I need to recompute them in seaice_ocean_stress.F)
689    
690    checkpoint58b_post
691    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
692      update output.txt of exp. aim.5l_cs.thSI
693    o various mnc cleanups and improvements:
694      + shrink lookup tables by factor of ~4
695      + better error reporting when running out of lookup space
696      + able to handle longer path/file names (up to 500 chars)
697    o adjoint:
698      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
699      - TBD: "hidden" mom_vecinv recomp. in dynamics
700    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
701     (allow to differentiate between forcing components using new integer flags:
702      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
703     and add new flag to put Dissipation tendency out of Adams-Bashforth.
704    o ecco
705      - enable trend removal from SSH anomaly obs.
706    o adjoint
707      - a fix for PmEpR when #undef EXACT_CONSERV
708      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
709      - try to fix "hidden" recomp. in forward_step for NLFS
710        (NLFS seems broken sometimes after I checked it in)
711    o seaice:
712     - add c-grid version of the dynamic solver:
713       + three new routines that are the c-grid substitute lsr, dynsolver
714         and ostres
715       + put a few fields that were local to dynsolver into global common
716         blocks, so that I can move the computation of stresses etc into
717         seaice_lsr (saves coding but may break the adjoint).
718     - replace more hardwired parameters by runtime parameters
719     - add ice masks that mask the rhs of the implicit solvers where there
720       is no ice (commented out in seaice_dynsolver, because i am not sure
721       if this works properly), eventually this should replace the clipping
722       of ice velocities in seaice_dynsolver to +/-40cm/s.
723    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
724      include it only where its needed
725    o move balancing of fluxes before the call of external_forcing_surf
726    o seaice:
727      - correct units of turning angles (now they are really in degrees)
728      - move computation of GWATX/Y out of main routine into dynsolver
729      - initialize GWATX/Y in seaice_init
730    o Apply mask on Fresh-Water flux (needed for SSH forcing).
731      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
732    o seaice: add runtime flags for turning angles (default to zero)
733    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
734      and trend from exf forcing and ctrl control adjustments
735    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
736      (since checkpoint57x_post)
737    o change the default rotation period to 86164.s = the Earth rotation
738    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
739      and based on a reference stratification. Tested within hs94.cs-32x32x5.
740    o seaice advection: add code for choosing between the default (2nd order
741      central differences) and multiDim advection schemes provided by
742      pkg/generic_advdiff
743    o seaice:
744      - removed all references to SEAICE_GRID.h fields from
745        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
746        (cubed-sphere configuration will change a little)
747      - grid computations in seaice_init are obsolete now.
748      - cleaned up code a little so that is easier to read (hopefully).
749      - added new (better?) discretizations of default advection and diffusion
750        (turn on with SEAICEuseFluxForm)
751      - replace 1 in 3d global fields by kSurface in growth.F
752      
753    checkpoint58a_post
754    o seaice:
755      - bug fix in advect.F
756    o shelfice:
757      - separate shelfice load anomaly from pload (breaks with time
758        dependent forcing), => introduce constant field shelficeLoadAnomaly.
759        Its default is 0., but it may be computed more cleverly from (unknown)
760        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
761        done offline. A good approximation of the pressure load anomaly is
762        necessary to avoid large initial adjustment processes underneath
763        deep-reaching shelfice.
764      - small fix in ISOMIP shelfice_thermodynamics
765      - add more sophisticated thermodynamics of Hellmer (1989), this is
766        now the default
767      - give a few constants more intuitive names
768    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
769      if bulk formulae are used in long integration (especially EmPmR). Turn
770      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
771      if balancePrintMean, the imbalance that is substracted is printed to
772      STDOUT.
773    o fix bug (typo) in obcs_apply_eta.F
774    o add a new package shelfice which enables us to model the circulation
775      underneath shelf-ice with draughts of hundreds of meters.
776     - works
777     - to do: + include improved thermodynamics
778              + check whether kSurfC (from model/inc/SURFACE.h) can be used
779                instead of new field kTopC
780              + can we use topoFile, Ro_surf and existing code in ini_depth.F
781                instead of new field R_shelfIce and new code in ini_depth.F
782                and ini_mask_etc.F?
783              + adjust vertical mixing schemes?
784    o seaice pkg:
785     - add a cpp-flag to include a simple formula for a salinity dependent
786       freezing point of sea water at the surface
787     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
788       meridional stresses are now different (and hopefully correct)
789    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
790       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
791       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
792    o pkg/diagnostics: add options and parameters for regional-statistics
793       diagnostics ; define regions by reading a region-mask from a file
794       (might add other options later)
795    o pkg/bulk_force:
796     - add option and parameters to use AIM surface-flux formulae.
797     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
798       others forcing fields (defined in PARM05, parameter file "data") are loaded
799       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
800     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
801     - use the right EXCH call for uwind,vwind (to work on CS-grid).
802     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
803       and parameters (note: calcWindStress replaces .NOT.readwindstress).
804     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
805    
806    checkpoint58
807    o add "--embed-source" option to genmake2 which, when the supporting
808      tools can be compiled (as determined by genmake2) will turn on the
809      embed_files package which then embeds the entire MITgcm source code
810      (*.[fFhc] + Makefile) used for the build within the executable
811      - requested by CNH but off by default
812      - adds a paltry <9MB to the mitgcmuv executable in most cases
813      - only writes the output when useEMBEDSRC in eedata is true
814    o clean up 3-dim. relaxation codes:
815      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
816      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
817      * Thanks to Tom Haine for testing!
818    
819    checkpoint57z_post
820    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
821      affects output (@ truncation level) of exp. plume_on_slope ; updated.
822    o fix the pickup behavior for obcs in combination with ptracers
823    o fix a bug in ptracers_external_fields_load
824    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
825      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
826    o transfered surface NH pressure to eta field (if exactConserv).
827    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
828         and update lab_sea output.txt file.
829    o completing 3-dim. relaxation code: additional term
830         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
831      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
832      * At compile time, in "EXF_OPTIONS.h" set
833          #define  ALLOW_CLIMTEMP_RELAXATION
834          #define  ALLOW_CLIMSALT_RELAXATION
835      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
836          tauThetaClimRelax3Dim = 15552000.0,
837          tauSaltClimRelax3Dim  = 15552000.0,
838      * 3 cases:
839          1) Use a constant-in-time 3-dim. field
840          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
841          3) Real-time relax. to time-evolving prescribed field
842    o Adding Laplacian-type smoothness constraint on
843      initial and boundary (forcing) controls (ic, bc)
844      * enable at compile-time via
845        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
846      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
847      * Absolute scale somewhat unclear so far
848      * no area weighting was included since no other cost term does so far
849    
850    checkpoint57y_post
851    First step for a NLFS adjoint
852    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
853    o new init. routines for calc_r_star, calc_surf_dr
854    o still need to deal with ini_masks_etc
855    o testreport seemed happy
856    checkpoint57y_pre
857    
858    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
859    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
860    o add new offset feature to offline pkg (plus minor cleanup)
861    o cfc fixes for final year of integration
862    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
863      be in GCHEM_OPTIONS).
864    
865    checkpoint57x_post
866    o fix testreport Pb in multiple test experiment.
867    o cleanup our namelist syntax in verification:
868      - make it more F95 standards compliant (some work still needed)
869      - allows the vast majority of our tests to work with gfortran
870    o Non-Hydrostatic:
871     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
872     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
873    o Allow to apply AB on T,S rather than on AB(gT,gS):
874     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
875     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
876       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
877     - need a "clever" read_pickup to restart from the other AB formulation
878    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
879    o remove some unused variables (reduces number of compiler warnings)
880    o adjoint
881      * Disable useVariableViscosity for adjoint for time being
882        (there are a number of extensive recomputations)
883      * Initialize certain variables needed for adjoint
884    
885    checkpoint57w_post
886    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
887                 fix the singleCpuIO RS version of MDSWRITEFIELD
888       and add a WARNING if using globalFiles=T with multi-processors.
889    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
890      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
891    o tracer advection scheme:
892      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
893       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
894       was not very convenient).
895      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
896       (further tests needed for the implicit DST & Flux-Limiter schemes).
897    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
898      and sRef for convenience, handy, when you want to initialize
899      ptracers in a large domain with a constant non-zero value. Also,
900      untangle ptracers_init.F a little.
901    
902    checkpoint57v_post
903    o change dome exp. to use variable viscosity in side-drag terms.
904    o remove all the files from the cfc_offline test since they are now
905      incorporated into tutorial_cfc_offline which has been producing
906      identical results for a few days of testing
907    o add new parameter: sideDragFactor to enable half-slip-side BC
908      and change side-drag S/R to use viscosity from mom_calc_visc
909      (can switch back by setting sideDragFactor=0.); affects results at
910      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
911       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
912    o vorticity & strain are now computed without masking, to account for
913      no-slip-side BC in variable viscosity calculation ; mask is applied
914      anyway later on, before computing advection/coriolis terms.
915    o modify exp4 to test new obcs support for reading from external files
916      and for passive tracers
917    o fix behavior of ptracers_monitor when monitor output is written to a
918      netcdf-file; still not independent of monitor.F (writes in the same
919      file).
920    o change default value of tRef (put a uniform, meaningful value for ocean
921      & atmos) and initialize sRef (was missing, as Martin mentioned).
922    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
923      to be proportional to enstrophy dissipation length.  Thus,
924       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
925      This is now consistent with Smagorinsky and with the manual.
926    
927    checkpoint57u_post
928    o OBCS and PTRACERS: add open boundary support for passive tracers
929      - either use homogenous (pseudo) v.Neumann conditions or prescribe
930        OB-values from file; this is not different from the way theta and salinity
931        are treated
932      - however, Orlanski-radiation conditions are not supported, and the model
933        will stop if you use pTracers and Orlanski at the same time.
934      - beefed up the rountine obcs_external_fields_load: now only those open
935        boundary values are overwritten with values from files for which there
936        are really files, otherwise the OB-fields remain untouched. This makes
937        it possible to use different OBs at different ends of the domain (as
938        with EXF)
939    o reduce number of exch calls in shap_filt (s2).
940    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
941      truncation level) 4/5 MLAdjust test results (11&12 digits match).
942    
943    checkpoint57t_post
944    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
945    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
946      same truncation, independent of the face number: affects affects several
947      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
948    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
949      note that biharmonic viscosity + no-slip was not tested in any experiment.
950    o fix bug in non-linear free-surf side-drag ; generate new output for
951      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
952    o make mnc honor the writeBinaryPrec flag for most kinds of output
953    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
954    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
955      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
956    o add brackets in multi-terms sum to get same truncation, independent of
957      the face number (manage to get exactly same value of gU,gV at the cs-edge)
958      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
959    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
960      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
961      a maximum grid-scale Reynolds number.  Also, changes all length calculations
962      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
963      Suggested values of viscosity parameters found in mom_calc_visc.
964      Many new viscosity diagnostics available.
965    
966    checkpoint57s_post
967    o Add clearing-house for viscosity calculations, mom_calc_visc and
968      correct numerous bugs in LeithD and Smagorinsky discretizations.  
969      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
970      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
971      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
972      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
973      The Strain-Tension form is now called with useStrainTensonVisc=.true.
974      ViscAhStrain and viscAhTension are now retired.
975    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
976    o In response to JMC's bug report, genmake2 now ignores any soft-links
977      that it finds in the *current* directory when searching for files.
978      Soft-links found in any other source directories will still work as
979      they did before.
980    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
981      a C routine to unlimit the stack size
982    o mnc-ify pkg/aim snapshot vars
983    o mnc-ify pkg/land as requested by Daniel
984    o various changes to mnc including:
985      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
986      - output can now be grouped so that all files within a group
987          change the ITER portion of their names in lock-step together
988      - can now read ("global") PER-FACE (in addition to PER-TILE) files
989          and works with both EXCH1 and EXCH2 (but needs more testing)
990      - writing works for all verification test cases w/ g77 on Linux
991    
992    checkpoint57r_post
993    o make MNC variable initialization happen earlier
994    o add diagnostics for (almost) each term of the momentum Eq.
995    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
996    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
997    o remove MINIMAL_TAVE_OUTPUT option ;
998      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
999    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
1000      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
1001    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
1002    o add time-dependent SST, SSS control
1003    o cost terms in ecco/ modularized (new cost_generic.F)
1004    o cost_averages routines are modularized (new cost_averagesgeneric.F)
1005    o new infrastructure for seaice model vs. obs misfits in seaice/
1006      * driver from the_main_loop.F is seaice_cost_driver.F
1007      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
1008      * gradient check in Exp. 6a of natl_box_adjoint/
1009    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
1010      (see README file)
1011    
1012    checkpoint57q_post
1013    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
1014    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
1015      - bug was reported by Jean-Michel and Ian Fenty
1016    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
1017      update exp. cpl_aim+ocn output.
1018    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
1019      Needed for high-res. runs with large global files
1020      to be able to limit tapelev size
1021    o Changed some tests for adjoint:
1022      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
1023      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
1024      * global_ocean.90x40x15/ back to default 3-level checkpointing
1025    o Modifications to enable scripted COMMON to MODULE conversion
1026      * verification/OpenAD/code/ has necessary scripts and description;
1027      * converts, compiles and runs successfully;
1028    
1029    checkpoint57p_post
1030    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
1031    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
1032      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
1033    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
1034    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
1035      (was already the case for dissipation with mom_vecinv,
1036       and also the case for grad.PhiHyd when staggered-timeStep)
1037      This will allow to put dissipation out-off the AB time-stepping.
1038     Unfortunately, affects truncation error. Update output of exp. that "fails"
1039      (cg2d matching number) and leave the others for later: front_relax(10),
1040      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
1041      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
1042    
1043    checkpoint57o_post
1044    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
1045      (2) its ready to be documented during the 20050801 DocFest
1046    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
1047      for ideal_2D_oce and lab_sea on linux_ia32_g77
1048    o set to #undef CTRL_SET_OLD_MAXCVARS_30
1049      in global1x1_tot/code_seaice_adj to access indices 32, 33
1050      (worth another tag)
1051    
1052    checkpoint57n_post
1053    o adding precip control xx_precip 32
1054    o adding swflux control xx_swflux 33
1055    o Replacing 10 forcing penalty cost routines by 1 generic.
1056    o Implementing partitioning in time-mean and variable adjustment
1057      for atmos. state.
1058    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
1059    o in natl_box_adjoint:
1060      * updated exp 1 to 10
1061        (but does not have time-mean vs. variable split results yet)
1062    o updated global1x1/*_seaice_adj/
1063      to incorporate latest changes
1064    o enable useSingleCpuIO for mdsio vector routines
1065      (applies in particular to tapelev I/O)
1066    o removed inefficient K-loop in all active_file*control*.F
1067    
1068    checkpoint57m_post
1069    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
1070      and advect_cs (use EXCH-2 and standard cs-32 grid files).
1071    o pkg/exch2: filling of face-corner halo regions is optional
1072      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
1073    
1074    checkpoint57l_post
1075     tag before updating tutorials (pre-release-2)
1076    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
1077       for output and interpolation of input fields onto model grid)
1078    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
1079       Affects results of exp. rotating_tank ; update output.txt.
1080    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
1081          and taking the square quantity and/or using a fraction-weight field.
1082    o fix aim_diagnostics_init.F mate numbers.
1083    o add mnc output capability to diagnostics/diagstat and update
1084      our cvsignore files for the ACSII output generated
1085    
1086    checkpoint57k_post
1087    o lab_sea now uses diagnostics package and provides a suite of
1088      new EXF diagnostics output.
1089    
1090    checkpoint57j_post
1091    o exf
1092      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
1093        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
1094        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
1095      * extended diagnostics output
1096        - now includes all EXF variables
1097        - hs, hl moved to common block
1098        - separate S/R for diagnostics, called after ctrl vector is added
1099        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
1100        - EXFqnet contains true Qnet (i.e. includes qsw)
1101      * updated verif. lab_sea, global_with_exf
1102      * Rearranging hflux (exf_mapfields -> exf_getforcing)
1103        to ensure that diagnostics sees a true EXFqnet
1104    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
1105    o diagnostics pkg: change pointers so that 1 diagnostic can be used
1106      several times with different frequencies.
1107    o mnc-ify the thsice package as requested by Daniel Enderton
1108      - the monitor--MNC output needs work
1109      - many attributes need to be added (most are currently blank)
1110    o mnc-ify theaim_v23 package as requested by Daniel Enderton
1111      - many attributes need to be added (most are currently blank)
1112    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
1113    o add Sadourny like discretization to the 4th.O vorticity advection scheme
1114    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
1115      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
1116         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
1117    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
1118     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
1119    
1120    checkpoint57i_post
1121    o Diagnostics package was changed: diagnostic allocation is now deactivated
1122      by setting an empty file name in the namelist (used to be by setting 0 frequency)
1123    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
1124      add 1rst Order upwind vertical Shear.
1125    o add a quick fix for A/B checkpointing in OFFLINE mode
1126    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
1127      end-run around the C/Fortran linking horror in eesup/src/timers.F
1128    o added pkg/runclock: allows user to terminate run based on wall clock
1129    o added non-hydrostatic scaling parameter: nh_am2
1130    o pkg/my82: futile attempt to make results compiler-independent by adding
1131      some "_d 0", etc. no effect.
1132    o for mnc output, fill the 'T' coordinate var with myTime and create a
1133      separate 'iter' variable for iteration count
1134    o pkg/diagnostics:
1135      add new capability: output of Global/Regional & per-level statistics ;
1136      tested against monitor output (including land & thSIce) on various exp.
1137    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
1138    
1139    checkpoint57h_done
1140      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
1141      data.diagnostics, data.gchem, data.ptracers) is done.
1142    
1143    o pkg/diagnostics: prepare for Global/Regional statistics.
1144      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
1145    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
1146      and rename it: DIFFERENT_MULTIPLE
1147    
1148    checkpoint57h_post
1149    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
1150    o pkg/diagnostics: change output frequency, now in seconds (instead
1151      of Nb of iterations). This requires to change data.diagnostics.
1152    checkpoint57h_pre
1153    
1154    o in mnc, let the user create the output dir if both mnc_outdir_date
1155      and mnc_outdir_num are false
1156    o add fflags() to pkg/diagnostics which allows one to specify, on a
1157      per-file basis, the file precision [default behavior is unchanged]
1158    o added diagnostics to pkg/kpp, including computation of mixed layer
1159      depth based on a temperature/density criterion
1160    o updated verification/natl_box to test the new pkg/kpp diagnostics
1161    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
1162    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
1163    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
1164      not mnc -- this mistake was found by JMC and is now corrected
1165    
1166    checkpoint57g_post
1167    o add Adams-Bashforth 3rd Order time stepping:
1168      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
1169      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
1170    checkpoint57g_pre
1171    
1172    o make lambda[Theta,Salt]ClimRelax spatially varying
1173      (default remains spatially uniform constant based on tau)
1174    o added new control variables
1175      * init. uVel, vVel, etanN
1176      * lambda[Theta,Salt]ClimRelax
1177    o separate masks used for ctrl_pack/unpack 'from write_grid' output
1178      (suggested by G. Forget)
1179    
1180    checkpoint57f_post
1181    o add parameter "baseTime" = model base time = time at iteration zero
1182      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
1183      account for baseTime shift
1184    o move Coriolis arrays from PARAMS.h to GRID.h
1185    checkpoint57f_pre
1186    
1187    o mnc-ifying the seaice package
1188    o introduced an alternative length scale calculation for use in the limiting
1189      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
1190    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
1191    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
1192      as well as grad(vort3).  Made it compatible with both approximate form
1193      for the cubed sphere and full form of these gradients.  Added flag
1194      useFullLeith to select between approximate and full form.  
1195    o add "d0" in getcon.F to reduce differences between compilers/platforms
1196      update output.txt of exp. fizhi-gridalt-hs
1197    o change port_rand funtion to allow to set the seed.
1198    o fix obscure MNC bug involving conversion between reals and integers
1199      - it caused no problems with certain (eg. gcc, ifc) compilers but the
1200        new version is now more standards-compliant
1201    o adjoint-related modifications
1202      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
1203      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
1204      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
1205    
1206    checkpoint57e_post
1207    o Adding eddy stress controls a la Ferreira et al.
1208    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
1209    
1210    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
1211      update output.txt of exp. fizhi-gridalt-hs
1212    o add more "Z" dimensions and associated coordinate vars to MNC
1213    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
1214    o parameter calendarDumps: when set, approximate months (30-31 days) and years
1215      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
1216      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
1217      months and years.  Requires pkg/cal.
1218    o diagnostics: add pickup functionality
1219      - off by default for backwards compatibility
1220      - current version only uses MDSIO -- MNC will be added
1221    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
1222    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
1223    
1224    checkpoint57d_post
1225    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
1226    o modify verification/ideal_2D_oce so that it tests the creation of mnc
1227      output from the diagnostics package
1228    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
1229    o make genmake2 more portable by using ".$FS" instead of ".f" for more
1230      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
1231    o add coordinate variables to the MNC output from the diagnostics package
1232    o change MNC-flags default value: true when useMNC=TRUE
1233    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
1234      the ability (off by default) to read the grid information using MNC
1235    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
1236    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
1237    o do snap-shot diagnostics at the middle of the time-interval (instead of
1238      at the end).
1239    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
1240      new test for AIM with thSIce + slab-ocean
1241    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
1242    o move state variable diagnostics to the beginning of the time step ;
1243      (note: still needs some work specially for snap-shot diagnostics)
1244      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
1245    
1246    checkpoint57c_post
1247    o Change testing option (-ieee) to get closer agreement between g77 & ifort
1248    o generate new output.txt files on faulks with g77 & the new -ieee option
1249    checkpoint57c_pre
1250    
1251    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
1252      update output.txt of exp. global_ocean.90x40x15
1253    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
1254      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
1255    o add saltFlux(+File) forcing capability with periodicExternalForcing
1256    o allow to use pkg diagnostics for GM-Redi & ThSIce output
1257    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
1258    o improvements for the MNC output from DIAGNOSTICS:
1259      - correct handling of the unlimitied dimension
1260      - all dims now have associated coordinate variables
1261      - variables located at U, V, and Corner ("Z") points are now written
1262        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
1263        *all* data points are output
1264    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
1265    o added pkg/seaice/seaice_monitor.F
1266    o mdsio_readfield.F can now read files visible only to master MPI process.
1267    o pkg/seaice: some test code for ice-modified ocean stress
1268    o exf_getffields interpolation defaults to bilinear for all scalar forcing
1269      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
1270      spurious negative numbers for precipitation and humidity.  Will cause
1271      some small numerical differences for integrations using pkg/exf/exf_interp.F.
1272    o pkg/ctrl/
1273      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
1274        May be enabled via doPackDiag
1275      *  introduce z-scaling of
1276         + gradient (doZscalePack) and
1277         + control (doZscaleUnpack)
1278    o pkg/mdsio/
1279      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
1280      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
1281    
1282    checkpoint57b_post
1283    o simplify options in diagnostics_fill arguments (remove weird combinations)
1284    o fix MNC coordinate variables so that they now contain per-face index
1285      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
1286      general, EXCH2 grids are only aligned to a "local" coordinate system
1287    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
1288    o Implement instantaneous output within pkg diagnostics:
1289      setting a negative frequency in data.diagnostics produces
1290     "snap-shot" output (as opposed to time-average if freq > 0)
1291    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
1292      NOTE: change ptracer diagnostics name: use 2 characters to work with
1293            more than 9 tracers. Add also diagnostics of advect & diffus flux.
1294    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
1295      becomes the coordinate variable for the 'T' dimension
1296    o add CF-style coordinate variables to MNC
1297      - just a first cut:  numbers are meaningless on the cubesphere and
1298        missing along the T axis but otherwise it works!
1299    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
1300    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
1301    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
1302      this is based directly on what the model compute, so that the content of
1303      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
1304    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
1305    o clean up build options files for SunOS, in particular
1306      - remove -traditional from xmakedepend
1307      - change -xarch=v9 to -xarch=native for f77
1308      - restore use of make (not gmake)
1309      - add CC=gcc if using g77
1310    o changes per discussion of AM, JMC, & EH3 today:
1311      - move redundant "grid" variables out of "state" -- in preparation of
1312        creating proper CF-style coordinate variables and in recognition
1313        that any/all grid variables can be easily copied (eg. w/NCO) from
1314        the grid files into any of the other NetCDF files
1315      - *always* output grid variables with MDSIO (this will eventually be
1316        changed)
1317      - output MNC grid file if useMNC is true
1318    o every instance of _END_MASTER() has been found and replaced with
1319      _END_MASTER( myThid ) in order to satisfy certain picky Sun
1320      preprocessors
1321    o re-arrange diagnostics pkg initialisation:
1322     - allow each package to extend the available diagnostics list
1323     - add some checking and fix small problems (multi-threaded, ...)
1324     - new S/R diagnostics_fill (replace fill_diagnostics):
1325       look through the short list of active diag. (instead of the long list)
1326       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
1327    
1328    checkpoint57a_post
1329    o this set of changes restores TAMC compatibility
1330      tested for global_ocean.90x40x15 adjoint on trough
1331      (what a pain)
1332    
1333    checkpoint57a_pre
1334    o some modifs in tools/build_options for sunos
1335    o call ctrl_pack for ctrl at end for optimcycle=0
1336    
1337    checkpoint57
1338    o add horizontal bi-harmonic viscosity for vertical velocity
1339      - new parameter viscA4W (defaults to viscA4)
1340      - affects only non-hydrostatic code
1341      - to be done: no-slip lateral boundary conditions
1342    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
1343    o implement Implicit Vertical advection for pTracers
1344    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
1345      (implemented also for implicit vertical diffusion & advection)
1346    o OBCS: extend application of tracer open boundary conditions
1347      to a strip beyond the boundary of width Olx/Oly
1348    o add call monitor to TAF set of required calls (flow directives)
1349      and include in natl_box_adjoint
1350    o untangle a few ifdefs related to cost, ctrl, autodiff
1351      untangel a few ALLOW_ECCO_OPTIMIZATION
1352    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
1353      (theta2, salt2 in ecco_cost_weights)
1354    
1355    checkpoint56c_post
1356    o OBCS as control variables
1357      - update ctrl_ad_diff.list, obcs_ad_diff.list
1358      - remove balance of obcs controls from default
1359      - fix index bug nobcs in ctrl_init
1360      - fix dummy fields filen in ctrl_pack
1361      - add dummy weights for obcs
1362    o lsopt: comment out fort.94 output
1363    o optim:
1364      - remove unnecessary header files
1365      - adjusted namelists
1366      - add xerbla.F to Makefile
1367    o exf:
1368      - multiple modifications of exf_check_range
1369      - unit change in exf_init_runoff from [m/year] to [m/s]
1370    o mdsio:
1371      - i/o-vector change debugLevel from debLevA to debLevB
1372    
1373    checkpoint56b_post
1374    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
1375      is called from DO_THE_MODEL_IO
1376      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
1377      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
1378      - clean up PTRACERS_WRITE_TIMEAVE a little
1379    o add another verification experiment that tests both the cfc-pkg and
1380      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
1381      reactive tendencies treated inline with regular timestepping
1382    o testreport previously did a lousy job of comparing small numbers, so
1383      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
1384      implemented in the little c-progam tmp_cmpnum.c which is embedded in
1385      testreport.
1386    o ptracers_monitor: bug fix for MPI
1387    
1388    checkpoint56a_post
1389    o GCHEM: finish reorganizating the package
1390      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
1391        (introduces another 3D-array for each passive tracer, but only if
1392        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
1393        gchemTendency is not needed because the timestep is done separately)
1394      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
1395      - GCHEM is now---more or less cleanly---separate from PTRACERS
1396      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
1397        so clear to me how that should be done in a general way.
1398    o CFC: improve formatting of output in CFC_ATMOS
1399    o PTRACERS:
1400      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
1401        that ALL experiments with ptracers enable can be checked. This makes
1402        GCHEM_MONITOR obsolete.
1403      - include a runtime parameter PTRACERS_monitorFreq that defaults to
1404        monitorFreq
1405      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
1406    o add PTRACERS (PTR0[1-5]) to testreport output
1407    o exf_check_range:
1408      * default changed to .TRUE.
1409      * will check values for niter0 if debLevA, every timestep if debLevB
1410      * STOP in exf_check_range if 'out of range'
1411      * range chosen generous to allow for potential extema
1412      TBD: a version with stricter range
1413           permitted range would be runtime parameters
1414    o GMredi:
1415      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
1416      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
1417      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
1418    o GCHEM:
1419      - move call to GCHEM_FORCING_SEP, so that it is now called before
1420        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
1421      - introduced a useGCHEM runtime flag and applied it everywhere.
1422      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
1423        this flag is now only visible within GCHEM-pkg routines.
1424      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
1425        be replaced by a 3D array that is computed before thermodynamics; for
1426        this, the tracer ID iTracer had to be included into the parameter list
1427        of ptracers_forcing
1428      - set up forward_step to call gchem_forcing, that will replace
1429        gchem_forcing_int in ptracers_forcing
1430      - cleaning up
1431    o small cleaning of exch2: remove files that are also in eesupp/src
1432    
1433    checkpoint56
1434    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
1435    o mnc: cleanup "full" files--fixes out-of-memory problem
1436    o ECCO-GODAE
1437      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
1438      * fully merged and updated from SIO code
1439        windstress sign change affects
1440        - exf_inscal_[u/v]stress
1441        - sign of xx_tau[u/v] adjustments
1442        - signs in cost_scat
1443      * ctrl_get_gen: avoid update of tau[u/v] for first few days
1444      * natl_box_adjoint updated and compressed
1445      * 2-level checkpoint switch added
1446        (tested in EXP. 1 of natl_box_adjoint)
1447      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
1448    o SVD
1449      * first complete, non-hacked version for SVD calculations
1450      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
1451        performed via direct access files admtlm_vector.it????
1452        (via ctrl_[un]pack)
1453      * optimcycle is used for ARPACK iteration counter
1454        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
1455      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
1456        and add linear transforms where necessary
1457      * controls are initial/final SST, SSS (can be extended; need to check
1458        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
1459    o mdsio: filename info to both stderr, stdout
1460    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
1461      from sign change
1462    
1463    checkpoint55j_post
1464    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
1465      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1466    o add consistent build directories and .cvsignore files to verification
1467    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
1468    o make all subroutines 30 or less characters in length for certain older
1469      compilers to work (a thorough search only turns up two routines in
1470      pkg/ptracers)
1471    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
1472      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1473    
1474    checkpoint55i_post
1475    o change arrays for total vertical diffusivity (2.D if explicit,
1476      3.D if implicit) ; each ptracer uses its own background value.
1477    o added mnc/NetCDF output capability to ocn_compon_interf
1478      - added bits to verification/cpl_aim+ocn so that it can run on
1479        ITRDA and other clusters without the mpirun "-wd" option
1480    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
1481      configuration
1482    o give MNC the ability to create additional files rather than
1483      exceeding a specified file size limit "MNC_MAX_FILESIZE"
1484      - the default is just less than 2GB which is a practical limit
1485        on many systems
1486    o Compute the non-local term using either KPP vertical diffusivity (=default)
1487       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
1488    
1489    checkpoint55h_post
1490    o add verification test "vermix"
1491    o remove all the *_ioinc flags and replace with the single global
1492      outputTypesInclusive flag
1493    o allow to set a vertical profile of vertical diffusivity for T & S
1494    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
1495    o useMNC moved from data.mnc to data.pkg
1496    
1497    checkpoint55g_post
1498    o Renaming carbon AD experiments to comply with testreport conventions
1499    o Updating adjoint of Held-Suarez hs94.1x64x5
1500    o Fixing directives for non-ECCO forward_step, after ECCO directives
1501      have been fixed to avoid recomp. of do_oceanic_phys
1502      Works well for global_ocean.90x40x15,
1503      but recomp. issue remains for carbon
1504    o Updating adjoint output for natl_box_adjoint after
1505      pkg/ecco has been modified (see taga c55d_post)
1506    
1507    checkpoint55f_post
1508    o rename to timeave_init_fixed
1509    
1510    checkpoint55e_post
1511    o some delicate re-shuffle of store directives to avoid one
1512      extra call of do_oceanic_physics
1513      affects ecco_the_main_loop.F, do_oceanic_physics.F
1514      checkpoint_lev1_directives.h
1515    o NB: this may break global_ocean adjoint temporarily,
1516      but it is clear how to fix it. Will do later, need this now.
1517    
1518    checkpoint55d_post
1519    o ECCO specific cost function terms (up-to-date with 1x1 runs)
1520    o ecco_cost_weights is modified to 1x1 runs
1521    o modifs to allow observations to be read in as
1522      single file or yearly files
1523    o enable to read exf forcing fields as either
1524      single file or yearly files (flag useExfYearlyFields)
1525    checkpoint55d_pre
1526    
1527    o switch between 2-level and 3-level checkpointing
1528    o add ability of MNC to write local and "partial" (eg. 2D slices where
1529      the full 3D field is never actually stored) arrays to NetCDF files
1530      with the correct (that is, the complete multi-dimensional) set of
1531      array indicies
1532      - used in mom_vecinv() to write the diagFreq output
1533      - tested (demonstrated) in verification/aim.5l_cs
1534    o further mnc-ification
1535      - add verification/lab_sea to the list with mnc setups
1536      - fix undefined mnc v-names in cd_code
1537      - add kpp to mnc output (both snapshot and timeave)
1538    o non-hydrostatic code
1539      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
1540        in calc_gw.F
1541      - defaults to viscAh
1542      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
1543        friction or Leith) in non-hydrostatic mode, as long as there is
1544        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
1545    o pkg/cost
1546      extend simple cost functions to treat time mean quantities
1547      (T,U,V) via cost_accumulate_state from cost_tile
1548    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
1549        be 2 times larger than the minimum size the advection scheme requires.
1550        now get a perfect conservation of salt in advect_cs test-exp (updated)
1551    o GGL90 (Gaspar's TKE mixed layer)
1552      - add horizontal diffusion of TKE, requires exchanges in
1553        do_fields_blocking_exchanges, horizontal diffusivity is zero by
1554        default. In OPA there is no horizontal diffusion of TKE but the
1555        mixing coefficients are computed from a horizontal average of TKE of
1556        6 points or so. I think that diffusion has a little more physical
1557        justification.
1558      - clean up ggl90_calc in the hope of reducing memory usage (this hope
1559        was in vain)
1560      - mask tke-variable in ggl90_init
1561    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
1562    o fix biharmonic diffusion on CS-grid.
1563    o more obcs stuff
1564      - added obcs_external_fields_load as an alternative to the EXF-pkg option
1565        for reading boundary values. This routine is called from
1566        obcs_prescribe_read
1567      - updated obcs_check
1568      - changed sponge layer relaxation parameter units for days to seconds
1569      - turned off sponge layer by default
1570      - changed argument list of OBCS_CALC to myTime+deltaTclock
1571      - fixed about 35 bugs in obcs_external_fields_load
1572    
1573    checkpoint55c_post
1574    o obcs stuff
1575      - new runtime flags useOBCSprescribe, useOBCSbalance
1576      - re-arranged obcs_calc
1577      - moved exf_getobcs to obcs_prescibe_read
1578        obcs_prescibe_read is called after ORLANSKI stuff
1579        and independent of it (executable can contain all).
1580      - updated obcs_check
1581      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
1582        These may be necessary only if tangential velocities are
1583        prescribed at OB, not sure, needs testing.
1584    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
1585      which simplifies the calls and passes the ifc check-bounds test
1586    
1587    checkpoint55b_post
1588    o add a 2D scalar, Z location, exchange_2 routine.
1589    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
1590      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
1591      affects advect_cs results (for the wrong reason): update output.txt
1592    o use a more standard discretization for biharmonic viscosity ;
1593     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
1594      affects results of dome set-up: update output.txt
1595    o fix gad_advection.F (CubedSphere part), back to version 1.23
1596    o fix bug in mom_vi_del2uv.F (CubedSphere part).
1597    
1598    checkpoint55a_post
1599    o merged code to
1600      * prescribe/read time-dependent open boundaries
1601        (works in conjunction with exf, cal)
1602      * sponge layer code for open boundaries
1603      * each boundary N/S/E/W now has its own CPP option
1604        (healthy for the adjoint)
1605    
1606    checkpoint55
1607    o up-to-date adjoint of previous breaks
1608      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
1609      - global_ocean_ebm: adjoint still needs fix (TLM ok)
1610      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
1611      - carbon: * remove tr1-related adjoint verification
1612                * add ptracer as control variable
1613    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
1614      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
1615    
1616    checkpoint54f_post
1617    o in verification/carbin/ remove experiment related to
1618      ALLOW_PASSIVE_TRACER (array tr1 etc)
1619      code_ad/ input_ad/ results_ad
1620    
1621    o add two new packages
1622      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
1623        + subject to optimization (memory)
1624      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
1625        + subject to reordering (many GOTOs in the original code)
1626        + so far opps is called for every (i,j) point, and then operates in
1627          the vertical; one may want to reorder the scheme in order operate in
1628          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
1629          fields)
1630    o overhaul of IO so that we now have flags for MDSIO and/or MNC
1631      - all verification tests compile and run with linux_ia32_g77
1632      - defaults are compatible with current input files--nothing
1633        should change if you were not previously using MNC
1634      - MNC output has been added in numerous places (eg. timeave)
1635        but there are still a few writes not yet do-able with MNC
1636        (this is in progress)
1637      - flags now allow for either/or/both use of MDSIO and MNC and
1638        documentation will soon follow
1639      - numerous small formatting cleanups for ProTeX
1640    o add version info (via BUILD_INFO.h) to MNC and stdout
1641    
1642    checkpoint54e_post
1643    o add two new packages
1644      - pp81 (Packanowski and Philander, 1981), Richardson number and
1645        stratification dependent mixing
1646      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
1647      - these scheme operate in a similar manner as KPP (without ghat, of
1648        course), however there is only one diffusivity that is used for both
1649        temperature and salinity (and passive tracers)ç
1650    o add offline package
1651    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
1652      provided by Stephanie Dutkiewicz
1653    o genmake2: add ability to search for C compilers and cleanup test output
1654      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
1655    
1656    checkpoint54d_post
1657    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
1658    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
1659      leading to additional shift by 5 days each year of integration
1660       (i.e. leading to considerable offset over the years)
1661    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
1662    o start with no AB and no initial filtering (staggerTimeStep):
1663      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
1664    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
1665      (external loading & cpl import/export stay in forward_step.F)
1666    o update coupling interface to work with new staggerTimeStep
1667    o change MDSIO ptracers_pickup.
1668    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
1669    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
1670    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
1671    
1672    checkpoint54c_post
1673    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
1674      this affects (truncation error) output.txt of test-exp:
1675       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
1676    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
1677    o change Qnet to always be the net heat flux, (+upward).
1678      affects (truncation error) output of natl_box exp.: updated
1679    o define the max number of passive tracers in PTRACERS_SIZE.h
1680    o start to test mnc routinely in exp0
1681    o add sea-ice loading (sIceLoad) as a new forcing field.
1682    
1683    checkpoint54b_post
1684    o add testreport "-j JOBS" option for parallel builds (tested and pretty
1685       impressive on Altix and Opteron systems)
1686    o diagnostics can now write NetCDF files through the mnc package
1687    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
1688    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
1689    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
1690      affects (truncation error) output of lab_sea & natl_box exp.: updated
1691    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
1692    
1693    checkpoint54a_post
1694    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
1695    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
1696    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
1697    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
1698      + internal_wave (shift in writing cg2d_ini_res)
1699    checkpoint54a_pre
1700    
1701    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
1702      - modified verification/lab_sea and natl_box_adjoint accordingly
1703    
1704    checkpoint54
1705    checkpoint53g_post
1706    o prepare splitting of thermodynamics: store convect.counter in common block
1707    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
1708      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
1709    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
1710    o new parameter "nShapS": allow to treat differently S from T (nShapT)
1711    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
1712    o restore adjointability
1713    
1714    checkpoint53f_post
1715    o modifications that affect AIM experiment results (update output.txt):
1716      - no advection of S at top interface Nr (pkg/generic_advdiff)
1717      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
1718    o AIM pkg:
1719      - include stability function into surf.Flux derivative relative to Tsurf
1720      - calculate clear-sky radiation & surface temp. change (for diagnostics)
1721    
1722    checkpoint53e_post
1723    o merged cylindrical coord configuration
1724    o added rotating_tank experiment
1725    checkpoint53e_pre
1726    
1727    checkpoint53d_post
1728    o faulks upgraded: re-generate output.txt that have changed:
1729       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
1730    o Added Bryan and Lewis, 1979, vertical diffusivity profile
1731    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
1732    o added Sadourny discretization of Coriolis
1733      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
1734      - re-enabled use of omega3 (useAbsVorticity)
1735    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
1736      vector-invariant equations
1737      - note: does *NOT* yet use same variable visc. for no-slip BC's.
1738    o recoded the lateral boundary conditions for non-hydrostatic w, this time
1739      hopefully without new bugs
1740      - still to do: biharmonic friction for non-hydrostatic w
1741    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
1742    o regenerated output for global_ocean_ebm (using -ieee)
1743    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
1744      of mom_common/
1745      - simple re-arrangement of instructions within computing loop
1746    checkpoint53d_pre
1747    
1748    checkpoint53c_post
1749    o new version of coupler for AIM+thSIce and Ocean models
1750     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
1751     - land: change Evaporation of snow
1752     - aim with thSIce: fix bug in snow-precip.
1753    o changes to calc_gw.F
1754     - bug fix for w^2 term near the bottom boundary
1755     - (hopefully) improve the lateral slip boundary condtions for use with
1756        partial/looped cells
1757      - because the bug fix changes two verification experiments anyway (exp5
1758        and plume on slope), change the lateral boundary condition from half slip
1759        to the value of no_slip_sides
1760    o ebm package wasnt quite up to the parallel task. Fixed that.
1761    o Adjoint of EBM package + verification
1762      * TLM OK
1763      * ADM not sufficient accuracy yet (needs further testing)
1764    
1765    checkpoint53b_post
1766    o Commiting new energy balance model to repository
1767      * package is pkg/ebm
1768      * verif. is verification/global_ocean_ebm
1769      * references are in ebm_driver.F
1770    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1771    C        Global thermohaline circulation. Part I:
1772    C        Sensitivity to atmospheric moisture transport.
1773    C        J. Climate 12(1), 71-82
1774    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1775    C        Global thermohaline circulation. Part II:
1776    C        Sensitivity with interactive transport.
1777    C        J. Climate 12(1), 83-91
1778    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
1779    C        Destabilization of the thermohaline circulation
1780    C        by atmospheric eddy transports.
1781    C        J. Climate 7(12), 1870-1882
1782    o Will need long integration testing.
1783    checkpoint53b_pre
1784    
1785    o created pkg/mom_common in preparation for variable viscosity code
1786    o renamed and split ini_mnc_io
1787    o pkg/land: only liquid water can diffuse or run-off
1788    o AIM using land: soil wetness availability account for snow
1789    o added printMapIncludesZeros to EEPARMS namelist
1790    
1791    checkpoint53a_post
1792    o restore TAMC compatiility for exf_constants.h
1793      (no usage of _d in .h)
1794    o Additional storing in KPP in an attempt to fix
1795      TAMC problem with adjoint of KPP code.
1796      (no success...)
1797      Identical code works fine with TAF.
1798    o Fixed verification/natl_box_adjoint experiments.
1799      Initial conditions for Experiments 4 and 5 are now
1800      set to "SEAICE_initialHEFF=0", which is more reasonable,
1801      and hence gives results closer to that of Experiment 2.
1802      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
1803    
1804    checkpoint53
1805    o stable checkpoint with up to date adjoint
1806      TLM tests only run for 1st grdchk at the moment. Its unclear if
1807      this is a code problem or a problem with resetting code for g_
1808      variables that is being autogenerated wrong.
1809      Otherwise:
1810       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
1811       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
1812         are both still in chaos following their security messes.
1813    
1814    checkpoint52n_post
1815    o various build (mostly genmake2) changes including:
1816      - ability to build/run more easily within Cygwin and MacOS X
1817      - more complicated Makefiles with a stronger dependence on Gnu Make
1818    o pkg/seaice modifications
1819      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
1820        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
1821        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
1822      - changed proxy for geostrophic velocity and updated
1823        verification/lab_sea/results/* accordingly
1824      - removed ADI dynamic solver from pkg/seaice
1825      - replaced all occurrences of 1/CSTICE or 1/CSUICE
1826        they caused a segmentation fault under certain circumstances
1827      - removed unused field WATR
1828    o bug fix in exf-package:
1829      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
1830         now reflect that.
1831    o small fixes in the cal-package:
1832      - set reference date to first of January for the 'model'-calendar
1833      - failing of cal_CheckDate in cal_FullDate now actually results in a
1834        warning
1835    o small modifications in exf-package to increase flexibility:
1836      - change climtempfreeze from a constant to a runtime parameter that
1837        is specified in data.exf_clim (default = -1.9)
1838      - introduce runtime parameter windstressmax (default = 2.0) that is
1839        specified in data.exf
1840    o fix in pkg/thsice:
1841      - update Evap (Tsf changes) to be consistent with Latent heat flux
1842      - maintain snow precipitation unchanged (even if Tsf >=0).
1843     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
1844    
1845    checkpoint52m_post
1846    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
1847      this does not change any of the results, because myIter=0 in swfrac always
1848      lead to jwtype=2 (the default anyway), but the call makes little sense
1849      as a default
1850    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
1851    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
1852      atmospheric model (AIM) to use it ; add a "slab ocean" component.
1853    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
1854    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
1855    o extending useSingleCpuIO option to work with new exch2 I/O format
1856      - old-style, missing-tile I/O is still accessible by defining CPP
1857        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
1858    o monitor package can write to NetCDF files and/or STDOUT
1859    o fix re-definition bug in MNC_GRID_INIT_ALL()
1860    o doc/api_reference added
1861      - a framework for building an API Reference Manual using all
1862        the "protex" comments embedded in the code
1863      - see pkg/generic_advdiff, pkg/mnc for examples
1864    o MNC:
1865      - make myThid the last argument for all subroutines
1866      - new default for the grid files: NO halos
1867      - add useMNC and other run-time flags
1868      - separate per-file-group handling of the unlimited dimension
1869      - early initialization of MNC w/ flags read at the eeboot stage
1870        and lookup tables set in initialize_fixed
1871      - write all MNC output to a freshly-created directory
1872    o thermodynamics sea-ice (thsice) is now tested with testreport.
1873    o test exp. advect_cs: use the standard cs32 grid ; update output.
1874    o Added functionality to grdchk:
1875      pick global i,j,k position (or nearest wet) where to perform check.
1876    
1877    checkpoint52l_post
1878    o new land formulation:
1879      a) use ground enthalpy as prognostic variable to ensure exact
1880         energy conservation.
1881      b) account for water temperature and for latent heat of freezing
1882         in all processes (rain, run-off, ground storage)
1883      c) compute surface and ground temperature implicitly.
1884    o aim_v23 modification for new land model:
1885      a) Treat separately land / ocean / sea-ice surface fluxes
1886         to allow implicit computation of land & sea-ice surface temp.
1887      b) add snow precipitation.
1888    checkpoint52l_pre
1889    
1890    o fix problem (when 1 tile is empty) in min/max monitor.
1891    o fix bug in timeAve (u,vZetatave in common block)
1892    o no restoring terms under ice for pkg/seaice
1893    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
1894    o bug fix for pkg/seaice pickups
1895    o change MNC call locations and add coordinate attributes
1896    o mask vorticity at the corner ; affects global_ocean.cs output
1897    o fix ini_curvilinear_grid ; test CS experiments with mpi
1898    o aim.5l_cs: modify sea-ice fraction input file ; update output
1899    o exf: Adding simple range check routine for exf fields after read
1900    
1901    checkpoint52k_post
1902    o removed top-level directory "diags"
1903      - we migrated these functions to pkg/timeave a long time ago
1904    o fixed bug introduced in pkg/monitor
1905    o accuracy ctrlprec = 32 insuffient for gradient checks using
1906      averaged fields (I/O via cost_averages)
1907      -> use ctrl.h in active_file*.F to control I/O precision.
1908    o paramter list of CALL ADTHE_MAIN_LOOP
1909    o added initial do_the_model_io to ecco
1910    o set all ...Freq to zero after cost_final
1911      taveFreq, dumpFreq, pChkptFreq
1912    o MAIN and ECCO differentiability restored
1913    
1914    checkpoint52j_post
1915    o fix nchklev in tamc.h for global_ocean...
1916    o Bringing flow and store directives up-to-date
1917    o Really weird thing!
1918      call do_the_model_io from the_main_loop with parameters
1919      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
1920      TAF places a faulty re-call of initialise_varia
1921      after cost_final call which should not be there!
1922    checkpoint52j_pre
1923    
1924    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
1925      error messages
1926    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
1927    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
1928      debug output
1929    o modfied mdsio_writefield.F to handle non-global files under exch2
1930    o update AIM Cubed-Sphere exp (aim.5l_cs):
1931      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
1932    o update AIM Equatorial Channel exp:
1933      use standard aim_v23 pkg and change the SST fields to be more realistic.
1934    o globalFile now works with exch2
1935    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
1936      mon_vort3.F to make exch2 friendly with >1 tile per cube face
1937    o limit timeave output for hi-res integrations
1938    
1939    checkpoint52i_post
1940    o removed CPP_EEOPTIONS.h from verification/*/code
1941    o updated the tiling for global_ocean_pressure
1942    checkpoint52i_pre
1943    
1944    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
1945      the old pkg/aim).
1946    
1947    checkpoint52h_pre
1948    o shortened offending lines in exch2_send_rx?.template
1949    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
1950    o genmake2: add build & execute test for NetCDF code
1951    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
1952      old grid files, moved CPP_EEMACROS.h to pkg/exch2
1953    o added useSingleCPUIO flag to monitor.F and mon_out.F
1954    o added temporary hack for sea-ice dynamics on the cube:
1955      metric terms are ignored and it is assumed that
1956      there is no sea-ice on cube faces 1, 2, 4, and 5.
1957    
1958    checkpoint52f_post
1959    o added exch2 cube routines to pkg/exch2
1960    o modified hs94.cs-32x32x5 to use it
1961    o added new grid files to hs94.cs-32x32x5
1962    checkpoint52f_pre
1963    
1964    checkpoint52e_post
1965    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
1966      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
1967    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
1968      to work with implicit vertical advection and AB ;
1969    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
1970    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
1971     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
1972    checkpoint52e_pre
1973    
1974    o fix bug in impldiff when Nr=1 or Nr=2.
1975    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
1976    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
1977    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
1978      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
1979    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
1980    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
1981    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
1982    
1983    checkpoint52d_post
1984    o re-tiled many expts to allow comparison in multi-processor mode
1985      - updated output accordingly
1986      - changed hs94.128x64x5 to use intial T from file rather than use the
1987        random number generator
1988    o add infrastructure in model routines for fizhi and gridalt packages
1989    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
1990    o changes to permit hi-res, cubed-sphere, configuration
1991      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
1992      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
1993      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
1994        of surface winds for the cube
1995      (A verification experiment, based on global_ocean.cs32x15, but with
1996       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
1997       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
1998       complete with example surface forcing files and matlab scripts to look
1999       at the output and compare it with that of global_ocean.cs32x15.)
2000    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
2001       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
2002       to conform to the common rule.
2003    o check-in the first version of the coupler + interfaces for multi-components
2004       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
2005       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
2006       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
2007       - ocean and atmos. share the same horizontal grid (no interpolation).
2008       - exchanges between component and coupler is done in forward_step
2009    o new verification experiment, cpl_aim+ocn:
2010       coupled ocean - AIM atmosphere on cs32 grid.
2011    
2012    checkpoint52d_pre
2013    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
2014    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
2015    
2016    checkpoint52c_post
2017    o Fixing OPTIONS files for use of exf:
2018      - ALLOW_ECCO not needed
2019      - ECCO_CPPOPTIONS.h should not be included from
2020        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
2021        as has been the case in the past
2022      - All cal/exf related options are currently set in
2023        single header file. Should remain so until we
2024        agree on a consistent new policy.
2025    o Removed all CPP options for cal package.
2026      cal has no more CPP options.
2027    o modified STOREs in GAD_ADVECTION
2028    o corrected key comp. for passkey
2029    
2030    checkpoint52b_post
2031    o new version: "thsice" of thermodynamic sea-ice pkg:
2032     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
2033     - modify fluxes but do not change theta directly;
2034     - light cleaning of bulk_force pkg (still needed with thsice).
2035     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
2036       + output_thsice.txt to test thsice & bulk_force pkgs.
2037    o put back grid & coriolis monitor output.
2038    checkpoint52b_pre
2039    
2040    o call "do_the_model_io" at the beginning (=> dump initial state)
2041    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
2042    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
2043      (need info on NUMBER_OF_PTRACERS)
2044    o missing PTRACERS headers in some routines
2045    o default tamc.h in pkg/autodiff supposed to crash
2046      to ensure proper customization
2047    
2048    checkpoint52a_post
2049    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
2050      - moved surfaceTendencyTice from pkg/seaice to main code
2051      - subroutine FREEZE_SURFACE now limits only surface temperature
2052        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
2053        => new output.txt for global_ocean.cs32x15 & global_with_exf
2054      - keep the old version of FREEZE for backward compatibility;
2055        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
2056      - corresponding modifs for TAF directives
2057    o added surface flux output variables to TIMEAVE_STATVARS
2058    o time-averaged output for pkg/ptracers
2059    o fix problem with ECCO-related divided adjoint
2060      snapshot file was missing some ad-variables,
2061      but no warning issued by TAF
2062    
2063    checkpoint52a_pre
2064    o some bug fixes for #undef REAL4_IS_SLOW
2065    
2066    checkpoint52 = ecco_c52_e35
2067    o after testing adjoints of checkpoint51u_post
2068    
2069    checkpoint51u_post
2070    o this is the post-merge tag of the ecco-branch
2071      (needs another clean checkout and re-testing)
2072    o various natl_box_adjoint configs and results
2073      but no input fields
2074    o obcs adjoint not yet merged!
2075    o adding ECCO global 1x1 and 2x2 degree configs
2076    o updated/extended some store directives for seaice
2077    o pkg/ecco now containes ecco-specific part of cost function
2078    o top level routines the_main_loop, forward_step
2079      supersede those in model/src/
2080      previous input data.cost now in data.ecco
2081      (new namelist ecco_cost_nml)
2082    o in ctrl/ cleaned some cross-dependencies and updated CPP options
2083    
2084    checkpoint51t_post
2085    o this is the pre-merge tag of the ecco-branch
2086    
2087    checkpoint51s_post
2088    o cleanup: removed various obsolete #define-s
2089    o pkg/grdchk
2090      - renamed 'ph-grd 3' to 'grad-res'
2091      - merged from ecco-branch
2092        (remaining bug fixes for obcs gradient checks)
2093      - additional high-precision output for testreport
2094        (grep for 'precision_grdchk_result')
2095    
2096    checkpoint51r_post
2097    o cleaned up or removed CPP_OPTIONS.h files
2098    o updated results for some of the tests to reflect the new
2099      optfiles (-ieee: -O0 instead of -O3)
2100    
2101    checkpoint51q_post
2102    o cd_code:
2103      - moved cd_scheme.F -> cd_code_scheme.F
2104      - separate read_checkpoint from cd_code_ini_vars.F
2105      - separated cd_code part from write_checkpoint
2106      - updated AD_SOURCE, generated .flow
2107      - added CD_CODE_VARS.h to the_main_loop
2108      - Moving cd_code specific store dir.s to pkg/cd_code
2109    o ctrl package totally restructured
2110      - pack/unpack now optional and decoupled from
2111        xx_/adxx_ I/O
2112      - ctrl_pack/unpack cleaned
2113        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
2114      - confined inclusion of AD_CONFIG.h to where necessary.
2115    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
2116    
2117    checkpoint51p_post
2118    o create initial cd_code package
2119      - WARNING: the initialization of fields within packages
2120        is broken because INI_FIELDS (where READ_CHECKPOINT is
2121        called) is called *before* PACKAGES_INIT_VARIABLES.
2122        This seems to be backwards since
2123        1) its important to initially zero the entire field including
2124           the "halo" region
2125        2) zeroing needs to be done *before* reading pickup info
2126           and the pickup call might or might not happen in any
2127           particular run
2128      - this needs an overhaul for R2
2129    o cleanup verification/*/code/GMREDI_OPTIONS.h
2130    o cleanup testreport
2131    
2132    checkpoint51o_post
2133    o bringing AD-related verif's up to date with genmake2
2134      - carbon/
2135      - global_ocean.90x40x15/
2136      - hs.94.1x64x5/
2137      - (front_relax/ )
2138    o (more) consistent directory structure for AD-related verif.'s
2139    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
2140    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
2141    o bug fix in find_alpha.F for MDJWF:
2142      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
2143        change rho -> rho-rhoConst
2144      - replace call find_rho to find_rhonum
2145    o initialisation of rFlx extended to full array (required by TAF)
2146      and shifted to thermodynamics
2147    o removed PTRACERS.h in ptracers routine
2148    o added surfacetendencyPtr to S/R parameter list pracers_forcing
2149    o Correcting initialisations for fVerU, fVerV.
2150    o helping TAF to recognize dependency on kUp for
2151      fVerU, fVerV
2152    o Replacing delZ by delR in pkg/ctrl/
2153    checkpoint51o_pre
2154    
2155    o undid all of cp51 pending some cleanups and discussion
2156    o added the [#include "AD_CONFIG.h"] statement to all files that need
2157       it for adjoint/tl #defines
2158     o re-worked the build logic in genmake2 to support AD_CONFIG.h
2159     o removed tools/genmake since it no longer works
2160    
2161    checkpoint51n_post
2162    o modifications to make FREEZE flux visible to pkg/kpp
2163      - moved surfaceTendencyTice from pkg/seaice to main code
2164      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
2165      - subroutine FREEZE now limits only surface temperature
2166        (this means new output.txt for global_ocean.90x40x15,
2167         global_ocean.cs32x15, and global_with_exf)
2168    o added surface flux output variables to TIMEAVE_STATVARS
2169    
2170    checkpoint51n_pre
2171    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
2172    o added [#include "AD_CONFIG.h"] to all files that use the following
2173      defines:
2174      - ALLOW_ADJOINT_RUN
2175      - ALLOW_TANGENTLINEAR_RUN
2176      - ALLOW_ECCO_OPTIMIZATION
2177    
2178    checkpoint51m_post
2179    o incorporating changes to get TAMC/TAF working in genmake2
2180      - added new TAMC/TAF targets to the Makefile
2181      - various cleanups related to package handling
2182      - these changes should have no impact on the forward model
2183    
2184    checkpoint51l_post
2185    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
2186     - faster algorithm for cal_addtime.F
2187     - higher precision arithmetic, where needed
2188     - pkg/exf *startdate variables changed from calendar date to
2189       model integration time
2190    
2191    checkpoint51l_pre
2192    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
2193    o enable to apply restoring on S & T only in a latitude band.
2194    o update output (external_forcing_surf modif. change truncation errors)
2195       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
2196    
2197    checkpoint51k_post
2198    o change default to: useNHMTerms=.FALSE.
2199     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
2200       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
2201     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
2202        exp1, ideal_2D_oce
2203     - change data file of oceanic exp (leave the results unchanged for now)
2204       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
2205    o set gravitySign automatically according to the vertical coordinate used
2206      (and change sign: back to "logical" value: +1 when R increases downward)
2207    o added an include barrier to the default CPP_OPTIONS.h and
2208      removed the #include "PACKAGES_CONFIG.h" from it
2209    o fix a bug in mom_fluxform (from chk51j_post)
2210    
2211    checkpoint51j_post
2212    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
2213    o adjusted some flow directives (dynamics, thermodynamics)
2214    o added cubed-sphere case to test cost function
2215    o heckpoint_lev?_directives.h now include
2216      pkg-specific directives, whenever those are enabled.
2217    o Moving pkg-specific flow directives to corresponding pkg
2218      Moving pkg-specific differentiation list to corresponding pkg
2219      Moving pkg-specific checkpoint-lev storing to corresponding pkg
2220      ---> conventions are
2221           - pkg_ad.flow
2222           - pkg_ad_diff.list
2223           - pkg_ad_check_lev?_dir.h
2224    
2225    checkpoint51i_post
2226    o merge of the branch-genmake2
2227      - knowingly breaks the older genmake
2228      - automatic generation of all ALLOW_${PKG_NAME} defines
2229      - new testreport supersedes older testscript
2230    o large number of package inclusion and header cleanups
2231    checkpoint51i_pre
2232    
2233    o new output for adjoin of global ocean vector invariant
2234    o fix for checkpoint of thermodynamic seaice and bulk_force
2235    o Steph gchem various cleanups
2236    
2237    checkpoint 51h_pre
2238    o fixed some single quotes
2239    o modify gchem pkg to be more versatile
2240    o modifications to clean up dic pkg
2241    o add pkg/cfc
2242    
2243    checkpoint51g_post
2244    o provide links for ARPACK and ADM*TLM
2245    o start removing verification/vero/
2246    o update AD-related stuff
2247      (in particular some IF-statements in model/src/ routines)
2248    o adding to verification/global_ocean.90x40x15/ adjoint of
2249      vector invariant setup
2250    
2251    checkpoint51f_post
2252    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
2253    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
2254      of tracer Green's fucntions for ocean inversion project.
2255    
2256    checkpoint51f_pre
2257    o Added on-the-fly spatial interpolation capability
2258        "USE_EXF_INTERPOLATION" to pkg/exf.
2259      - This is a temporary Cartesian-grid hack until
2260        the super-duper ESMF coupler becomes available.
2261      - See verification/global_with_exf/README for usage example.
2262      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
2263        flags and modified pkg/seaice accordingly.
2264    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
2265        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
2266        non-local transport term.
2267    
2268    checkpoint51e_post
2269    o pkg/mom_vecinv:
2270      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
2271      - add time-ave diagnostic of vorticity advection.
2272    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
2273    o atmospheric geopotential: - include water vapor effect;
2274                                - use p^kappa in p* scaling.
2275    o land pkg: read initial state from files.
2276    o AIM : add stratospheric drag in the upper level
2277    
2278    checkpoint51d_post
2279    o change function ILNBLNK (=> last non-blank char.) to return zero
2280      (instead of the string length) when the string. char is empty
2281    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
2282    o modif's to restore TAMC compatibility
2283      - avoid "_d" constructs in PARAMETER declarations
2284      - avoid interrupting lines by comment lines
2285    o Use cluster local disks for purely local I/O
2286      vs. globally visible disks needed for ctrl stuff
2287      (merged from ecco-branch)
2288      - new active_file_loc... and mdsio_..._loc routines
2289      - affected packages: autodiff, ctrl, grdchk, mdsio
2290    
2291    checkpoint51c_post
2292    o introducing integer flag debugLevel
2293      - debLevZero: suppress all output
2294      - debLevA: standard
2295      - debLevB: equivalent to current debugMode=.TRUE.
2296    o introducing pathname variable mdsioLocalDir for mdsio
2297      that can be specified at runtime
2298      (relevant for cluster I/O to local disk)
2299    `
2300    >>>checkpoint51b_post
2301    adjoint of ptracers
2302    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
2303    o extended state in checkpoint_lev?, etc.
2304    o alternative ctrl/cost with tr1 or ptracer
2305    o new comlev1_bibj_ptracers
2306    o new ptracers.flow
2307    o made ptracers_forcing same as external_forcing_s
2308    o added verification for adjoint with ptracers
2309      - adm. grdchk fail so far
2310      - tlm. grdchk OK
2311      - checked tapelev/comlev recomputations: OK
2312    <<<checkpoint51b_pre
2313    
2314    checkpoint51a_post
2315    o added code for biogeochemistry package
2316      - new pkgs: dic, gchem
2317      - new subroutine in ptracers
2318    o modify code for biogeo packages
2319      - in model/src and pkg/ptracers
2320    
2321    checkpoint51
2322    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
2323      - autodiff, ctrl, exf, grdchk, seaice
2324      kept separate packages
2325      - cost, ecco, obcs
2326    o updating verification/internal_wave, verification/lab_sea
2327      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
2328    
2329    checkpoint50i_post
2330    o Preparing next differentiable checkpoint and sync
2331      of MAIN vs. ecco-branch
2332      - 1st step: this one is differentiable
2333      - 2nd step: next(! not this) checkpoint will have updated packages
2334                  from ecco-branch)
2335    
2336    checkpoint50h_post
2337    o new package "land": provide surface BC for AIM.
2338    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
2339    o AIM: use true log-P extrapolation for near surface temp (= as in
2340        F.Molteni paper) ; update aim.5l_cs output.
2341    o New variable in PARM03 for more flexible pickups
2342    o somewhat cleaned package initialisation sequence for
2343      ctrl/ cost/ ecco/ in packages_... routines
2344    
2345    checkpoint50g_post
2346    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
2347      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
2348      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
2349        made the default because of faster convergence than ADI
2350    
2351    checkpoint50f_post
2352    o exf totally restructured
2353      - replaced all exf_set_ routines by one generic exf_set_gen.F
2354        and made sure it's still differentiable
2355      - split exf_getffields.F into new exf_bulkformulae.F
2356      - exf_inscal_/exf_outscal_ suffixes consistent with field names
2357      - updated adjoint/makefile and relevant verif. accordingly
2358    
2359    checkpoint50f_pre
2360     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
2361          + change Evap over land. (update aim.5l_cs output)
2362     o added missing .cvsignores and made uniform across expts
2363     o changed configuration of tidal_basin_2d expt
2364     o added pkg/debug functions for tracing code in fatal crashes
2365     o tidied pkg/monitor to use MONITOR_OPTIONS.h
2366     o new fn in pkg/monitor to stop model if solution grows too big
2367     o removed lots of single quotes from comments
2368    
2369    checkpoint50e_post
2370    o make KPP work with PTRACERS
2371     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
2372       nearly a copy of kpp_transport_s
2373     - there is no analogue to SurfaceTendencyS, so I have to use
2374       gPtr(of the surface layer) instead
2375    o add a new platform SunFire+mpi (SunFire 15000) to genmake
2376    checkpoint50e_pre
2377    
2378    checkpoint50d_post
2379    o change kpp output from multiple-record state files to single-record state
2380      files analogous to write_state.F
2381    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
2382      analogous to the cg2d-related output.
2383    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
2384      so that writing to internal file fn (with length 512) fails.
2385    checkpoint50d_pre
2386    
2387    checkpoint50c_post
2388    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
2389    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
2390    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
2391    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
2392    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
2393    
2394    checkpoint50c_pre
2395    Merging from release1_p13:
2396    o bug fix for pkg/seaice dynamic solver
2397    o Added SEAICE_initialHEFF to pkg/seaice
2398    
2399    checkpoint50b_post
2400    o store u*,v* in gU,V instead of in guNm1,gvNm1
2401    o in order to put the momForcing out of the Adams-Bashforth:
2402      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
2403      to timestep.F
2404    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
2405    o re-generate output for highly sensitive test-exp:
2406       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
2407    
2408    checkpoint50b_pre
2409    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
2410    o corrected CPP option mismatch in exf_Bulk... functions for case
2411      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
2412    
2413    checkpoint50a_post
2414    o Bug fix for merging between c50 and KPP.
2415      ikey was passed from thermodynamics to kpp_calc via
2416      common block rather than being recomputed in kpp_calc,
2417      in contradiction with new key itdkey.
2418      New key ikppkey created, and tamc.h headers updated.
2419    
2420    checkpoint50
2421    - 2nd step of merge with ecco-branch:
2422      merge changes in ecco-branch back into main trunk
2423    - bug fix in find_alpha
2424    - more storing in gmredi_calc_tensor.F, kpp_routines.F
2425    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
2426    - merged some sliced AD support routines
2427    
2428    checkpoint49
2429    merged from ecco-branch:
2430    o exf:
2431      - Enable initialisation of forcing fields to constant
2432        (runtime) values.
2433      - in exf_getffields.F
2434        Reduce i-/j-loop to interior domain, discarding overlaps.
2435        That also fixes wrong TAF-key computations for key_1, key_2
2436        with bulf formulae.
2437      - exf_init.F modify #ifdef for exf_init_evap
2438      - exf_getffieldrec.F, ctrl_getrec.F
2439        The following INT-usages are not safe:
2440          fldsecs  = int(fldsecs/fldperiod)*fldperiod
2441          fldcount = int(fldsecs/fldperiod) + 1
2442        and were modified.
2443    o autodiff: checkpoint_lev...
2444      - updated storing for bulk formulae (some arrays were missing)
2445      - added state for seaice package
2446      - synchronized with main branch
2447    o DIVA:
2448      Modif.s in
2449      - the_main_loop.F
2450      - the_model_main.F
2451      and added cost_final_restore.F cost_final_store.F
2452      o With these changes, it is possible to fully separate
2453        the first forward run to compute the cost function (mdthe_main_loop)
2454        and adjoint runs over individual DIVA intervals (adthe_main_loop)
2455        into separate model executions.
2456        This enables better tuning of DIVA to given queue sizes.
2457      o Loss of cost function value in consecutive DIVA runs is
2458        fixed by storing to 'costfinal' file.
2459      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
2460        beginning/end of adjoint integration is accounted for.
2461      The current changes apply to TAF-1.4.26.
2462      TAF has one remaining bug, requiring one manual change
2463      (see MITgcm manual).
2464    o cal: synchronized between MAIN and ecco-branch
2465    
2466    checkpoint48i_post
2467    o Changes to restore differentiability of code w.r.t. previous tag
2468      (mostly adding new routines to make list and replacing
2469      pressure by totPhiHyd).
2470    o Updated and merged grdchk package
2471      - has both ADM and TLM checks
2472      - works for single- and multi-proc.
2473      - output cleaned
2474      - worked successfully for parallel DIVA
2475    o genmake:
2476      - Adding -platform=SP4
2477      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
2478    o Modif. for DIVA:
2479      ctrl_unpack should not be called in intermediate DIVA interval.
2480      (similar thing would apply for active files such as
2481      tbar, sbar, psbar, which should not be reinitialised;
2482      only relevant for ecco-branch)
2483    
2484    checkpoint48h_post
2485    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
2486    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
2487    o Added SEAICE_initialHEFF to pkg/seaice
2488    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
2489    
2490    checkpoint48g_post
2491    --- EOS:
2492    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
2493      store total Potential in totPhyHyd for diagnostics & EOS.
2494    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
2495    --- Pressure/geopotential gradient:
2496    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
2497    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
2498      ( changes results of global_ocean_pressure )
2499    o NLFS + z-coord.: add eta*Rho' contribution.
2500    o accurate phiHyd when using interface-W at the middle between 2 centers
2501     ( changes results of ideal_2D_oce )
2502    o includes r* 2nd term in potential gradient.
2503    
2504    checkpoint48f_post
2505    Merging from release1_p12:
2506    o Modifications for using pkg/exf with pkg/seaice
2507      - improved description of the various forcing configurations
2508      - added basic radiation bulk formulae to pkg/exf
2509      - units/sign fix for evap computation in exf_getffields.F
2510      - updated verification/global_with_exf/results/output.txt
2511    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
2512      (SBO) core products, including oceanic mass, center-of-mass,
2513      angular, and bottom pressure (see pkg/sbo/README.sbo).
2514    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
2515      to avoid negative values in shallow regions.
2516      - updated verification/natl_box/results/output.txt
2517      - updated verification/lab_sea/results/output.txt
2518    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
2519    o Added useSingleCpuIO option (see PARAMS.h).
2520    o Updated useSingleCpuIO option in mdsio_writefield.F to
2521      work with multi-field files, e.g., for single-file pickup.
2522    o pkg/seaice:
2523      - bug fix in growth.F: QNET for no shortwave case
2524      - added HeffFile for specifying initial sea-ice thickness
2525      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
2526    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
2527      kpp_transport_t.F, forward_step.F, and the_main_loop.F
2528    o pkg/seaice:
2529      - adjoint-friendly modifications
2530      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
2531    
2532    checkpoint48e_post
2533    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
2534    o dynamics: change definition of computational domain & adapt mom_fluxform
2535      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
2536    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
2537        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
2538        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
2539        global_ocean.90x40x15 global_with_exf global_ocean_pressure
2540        inverted_barometer solid-body.cs-32x32x1
2541      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
2542    
2543    checkpoint48d_post
2544    o in preparation for r*:
2545     a) use pre-computed gradient of hydrostatic potential:
2546        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
2547     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
2548        => affects results of glob_oce_pressure (different truncation error)  
2549      update output.txt of ideal_2D_oce & global_ocean_pressure
2550    
2551    checkpoint48d_pre
2552    o in preparation for r*:
2553      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
2554      pass the 2 comp. of the grad. as arguments to momentum S/R.
2555      but for the moment, only used if it does not change the results.
2556    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
2557    
2558    checkpoint48c_post
2559    Modifications in treatment of initial flux forcing controls
2560    to avoid extra storing of flux fields.
2561    
2562    checkpoint48c_pre
2563    o Added tidal_basin_2d experiment (currently 1D!)
2564    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
2565    
2566    checkpoint48b_post
2567    o r* coordinate added in #ifdef NONLIN_FRSURF block.
2568     (modification to pressure gradient not yet implemented)
2569    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
2570      (for U & V) that are used for vertical advection of momentum.
2571    
2572    checkpoint48a_post
2573    o In preparation for r*, use temp. array to compute vertical transport
2574       in flux-form momentum pkg. => change results of few test-exp.
2575      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
2576                        lab_sea, natl_box & plume_on_slope
2577    
2578    checkpoint48
2579    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
2580    
2581    checkpoint47j_post
2582    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
2583    o moved adexch from forward_step to addummy_in_stepping
2584    o added exch in ctrl_map_...
2585    o aveFreq.=0. at end of cost_final to avoid overwrite in
2586      reverse checkpointing loop
2587    o Yet more changes in gmredi:
2588      * adgmredi_calc_tensor
2589        avoiding all recomputation of gmredi_slope_limit
2590      * adgmredi_x/y/rtransport
2591        added flag for excessive storing to avoid recomp. of
2592        u/v/rtans, dTdx/y/z
2593        -> this is not really necessary and very memory-consuming
2594      * adgmredi_slope_psi:
2595        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
2596      * gmredi_slope_limit
2597        re-activated full calculation of taperfct for case 'ac02'
2598    o updating verification/ adjoints of carbon, global_ocean.90x40x15
2599    
2600    checkpoint47i_post
2601    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
2602    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
2603      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
2604    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
2605    o gmredi: fix few bugs.
2606    
2607    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
2608    This will be a good checkpoint to plug into the ecco-branch.
2609    o few modif.'s to get latest version adjointed
2610      (mainly kick out code in ini_linear_phisurf)
2611    o modif's to run adjoint with exactConserv
2612    o case GM_BOLUS_ADVEC should be cleaned
2613      S/R gmredi_slope_psi should be cleaned
2614    o verification/carbon now has exactConserv=.TRUE.
2615    
2616    checkpoint47g_post
2617    o time-average AIM output: becomes independent from statvars time-average
2618      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
2619    o After TAF bug fix:
2620      Tested adjoint of gmredi package.
2621      Tests were done with checkpoint47 rather than with latest
2622      checkpoint47f_post since the latter is broken for the adjoint
2623      verification/carbon/ contains both ADM and TLM gradient checks.
2624    Here they are, before they get changed/lost/stolen.
2625    Mostly modif.'s to fix numerical sensitivities.
2626    Gradient checks OK for
2627    - GM_taper_scheme:
2628      * clipping
2629      * ac02
2630      * linear
2631      * glw91
2632      * dm95
2633      * ldd97
2634    - GMREDI_OPTIONS:
2635      * GM_VISBECK_VARIABLE_K
2636      * GM_NON_UNITY_DIAGONAL
2637      * GM_EXTRA_DIAGONAL
2638      * GM_BOLUS_ADVEC
2639    in conjunction with data.gmredi parameters to be checked in
2640    in a few minutes under verification/carbon/code/
2641    
2642    checkpoint47f_post
2643    Merging from release1_p10:
2644    o modifications for using pkg/exf with pkg/seaice
2645      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
2646        and SEAICE_EXTERNAL_FLUXES
2647      - pkg/exf CPP options EXF_READ_EVAP and
2648        EXF_NO_BULK_COMPUTATIONS
2649      - usage examples are Experiments 8 and 9 in
2650        verification/lab_sea/README
2651      - verification/lab_sea default experiment now uses
2652        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
2653    
2654    checkpoint47e_post
2655    o created a tag prior to creating a branch
2656    
2657    checkpoint47d_post
2658    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
2659      at the bottom boundary had an erroneous half slip boundary condition
2660    o added bottom drag and no slip boundary condition capabilities to
2661      oceanic pressure coordinates code
2662    o added new verification experiment global_ocean_pressure, this experiment is
2663      also described in the tutorial section of the manual
2664    checkpoint47d_pre
2665    
2666    checkpoint47c_post
2667    o Added a verification experiment for a global cubed-sphere ocean run
2668      -  verification/global_ocean.cubed32x32x30
2669      -  uses pkg/therm_seaice and pkg/bulk_forcing
2670    
2671    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
2672    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
2673      when using P-coordinate; only implemented for atmospheric config.
2674    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
2675      NOTES: requires option NONLIN_FRSURF to be "#define".
2676    o update advect_xz/results/output.txt (left from checkpoint44g_post)
2677    
2678    checkpoint47b_post
2679    Merging from release1_p9:
2680    o pkg/seaice
2681      - removed GOTO's and added taf directives
2682      - double precision constants to reduce the g77 (Linux)
2683        to F77 (SGI) differences reported in release1_p8
2684    o tools/genmake
2685      - added SGI options
2686    o verification/testscript
2687      - updated to that of checkpoint47a_post
2688    o verification/global_ocean.90x40x15/input/eedata
2689      - modified for SGI f77 compatibility
2690    o verification/lab_sea
2691      - added description of sea-ice model
2692      - added missing matlab routines
2693      - added test of thermodynamics parallelization
2694    
2695    checkpoint47a_post
2696    o new pkg: aim_v23
2697     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
2698       for now, keep the same surface forcing as before.
2699     - Part-Cell implemented into AIM; check that Heat & Water are conserved
2700     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
2701     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
2702    o add diagnostic of surface correction term in monitor output
2703    
2704    o bulk_force and therm_seaice
2705    - Two packages:  bulk_force (Bulk forcing)
2706      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
2707    - Earlier integration from Stephaine Dutkiewicz
2708      and Patrick Heimbach.
2709    - Two ifdef statements for compile time,
2710       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
2711    
2712    checkpoint47
2713    differentiable version of checkpoint46n_post
2714    o bug fix in quasihydrostaticterms
2715    o * "clean" adjoint code (in terms of extensive recomputations)
2716        can now be obtained for all GMREDI options (i.e. for
2717        - GM_VISBECK_VARIABLE_K
2718        - GM_NON_UNITY_DIAGONAL
2719        - GM_EXTRA_DIAGONAL
2720        - GM_BOLUS_ADVEC )
2721      * However, wrong gradient check problem remains unsolved.
2722      * New CPP options have been introduced for different
2723        tapering schemes
2724    o external_fields_load now part of differentiation list
2725    o pressure needs multiple storing;
2726      would be nice to have store_pressure at beginning or
2727      end of forward_step, e.g. by having phiHyd global (5-dim.)
2728      (NB: pressure is needed for certain cases in find_rho,
2729      which is also invoked through convective_adjustment).
2730    o recomputations in find_rho for cases
2731     'JMD95'/'UNESCO' or 'MDJWF' are OK.
2732    o #define ATMOSPHERIC_LOADING should be differentiable
2733    o ini_forcing shifted to begining of initialise_varia
2734    o Incorporating QNVS line search routines into MITgcm
2735      (this is separate code, and therefore not under pkg)
2736      lsopt/, optim/
2737    o Updated verification/carbon/
2738      - #define GM_VISBECK_VARIABLE_K
2739      - GM_taper_scheme    = 'ldd97'    
2740    
2741    checkpoint46n_post
2742    Merging from release1_p8:
2743    o verification/natl_box:
2744      updating new external_fields_load routine
2745    o New package: pkg/seaice
2746      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
2747      The sea-ice code is based on Hibler (1979-1980).
2748      Two sea-ice dynamic solvers, ADI and LSR, are included.
2749      In addition to computing prognostic sea-ice variables and diagnosing
2750      the forcing/external data fields that drive the ocean model,
2751      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
2752      The implied surface heat flux is then stored in variable
2753      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
2754      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
2755      non-local transport term.  Because this call precedes model
2756      thermodynamics, temperature under sea-ice may not be "exactly" at
2757      the freezing point by the time theta is dumped or time-averaged.
2758      N.B.: fairly large differences in accuracy occur across
2759            different platforms/compilers; comparison between
2760            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
2761            generated output gives:
2762       T           S           U           V
2763      C D M    c        m  s        m  s        m  s        m  s
2764      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
2765      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
2766      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
2767    
2768      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
2769    o GAD:
2770      - generated new common blocks to account for call of
2771        same gad routines with differing traceridentities
2772        (needed to modify tracerIdentity indices in GAD.h)
2773      - generated separate common blocks for case useCubedSphereExchange
2774        (Department of Futurology)
2775      - parameter lists to gmredi_?transport: added tracerIdentity
2776      - added new key indices to tamc.h
2777    o external_fields_load:
2778      - added this routine to TAF list
2779      - needed to make some common blocks global and additional storing
2780        along the same lines as exf package (checkpoint_lev?_directives.h)
2781    o exf:
2782      updated external forcing package
2783      - bug fixes carried over from ecco-branch
2784        (missing OBCS_OPTIONS.h in two routines)
2785      - enable easy to use "no forcing".
2786      - added exf I/O for atmospheric loading
2787      - added exf I/O for runoff data
2788      - transfered scaling between exf <-> MITgcm to exf namelist
2789    o Adding new verification experiment global_with_exf.
2790      This verification experiment is almost identical to the
2791      global_ocean.90x40x15 experiment, except that it uses
2792      the exf (and cal) package instead of the
2793      external_fields_load routine (cf README file).
2794    
2795    checkpoint46m_post
2796    o modified testscript to return -- when there are no lines of "%MON" output
2797    o added new flag "quasiHydrostatic" for QH mode
2798      and new routine quasihydrostaticterms()
2799    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
2800      New routine: mom_u_coriolis_nh()
2801    o fixed sign of non-hydrostatic metric terms in u and v equations.
2802      Depend on correct sign of gravitySign.
2803    o added work.pc* to .cvsignore in aim directories using ifc
2804    o introduced flag for controllin non-hydrostatic metric terms
2805    o removed gravitySign from PARM04
2806    o switched to g77/ifc from pgf77 in aim experiments
2807    
2808    checkpoint46l_post
2809    o made convective adjustment work with pressure coordinates:
2810     - changed the direction of k-loop in convective_adjustment.F for the
2811       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
2812     - adjusted the reference pressure k-index in convective_adjustment.F
2813     - adjusted the convection condition in convect.F (in analogy to
2814       calc_ivdc.F)
2815     - convective_adjustment no longer computes anything on the halos
2816     - removed the warnings about negative salinity from find_rho.F and
2817       find_alpha.F; instead the new routine look_for_neg_salinity, called
2818       at the beginning of find_rho, find_alpha, and find_beta, does a
2819       check of the entire slice, if CPP-option
2820       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
2821    checkpoint46l_pre
2822    
2823    checkpoint46k_post
2824    o fixed the verification/global_ocean.90x40x15 experiment:
2825     - new bathymetry (the world according to A., JMC, and M.)
2826     - new initial fields and forcing fields (*.bin files)
2827     - new POLY3.COEFFS (for the next release one should switch to a full
2828       equation of state: JMD95P or MDJWF)
2829     - fixed several errors and redundancies in the data file
2830     - experiment uses looped cells
2831     - added matlab directory with diagnostic scripts for plotting of output
2832    
2833    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
2834     - read AIM physics parameters from a file (data.aimphys)
2835     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
2836    
2837    checkpoint46j_post
2838    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
2839    o move wVel computation at the end of the time step, in S/R integr_continuity
2840    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
2841    o update timeave pkg for wVel diagnostic.
2842    checkpoint46j_pre
2843    
2844    checkpoint46i_post
2845    o Clean up AIM package (and keep the results unchanged):
2846      include CPP_OPTION and use IMPLICT NONE in all routines ;
2847      declare all the variables _RL ; use _d 0 for all numerical constants.
2848      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
2849    
2850    checkpoint46h_post
2851    o cleaned up the use of rhoNil and rhoConst.
2852      - rhoNil should only appear in the LINEAR equation of state, everywhere
2853        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
2854        and the dynamical equations are all divided by rhoConst
2855    o introduced new parameter rhoConstFresh, a reference density of fresh
2856      water, to remove the fresh water flux's dependence on rhoNil. The default
2857      value is 999.8 kg/m^3
2858    o cleanup up external_forcing.F and external_forcing_surf.F
2859      - can now be used by both OCEANIC and OCEANICP
2860    checkpoint46h_pre
2861    
2862     Added code to convert surface volume flux (fresh water) into
2863     a mass flux when using P coordinates in the ocean (OCEANICP).
2864     Note: It assumes you have set rho0=rhoConst=density of fresh water.
2865    
2866    checkpoint46g_post
2867    o Include a new diagnostic variable phiHydLow for the ocean model
2868      - in z-coordinates, it is the bottom pressure anomaly
2869      - in p-coordinates, it is the sea surface elevation
2870      - in both cases, these variable have global drift, reflecting the mass
2871        drift in z-coordinates and the volume drift in p-coordinates
2872      - included time averaging for phiHydLow, be aware of the drift!
2873    o depth-dependent computation of Bo_surf for pressure coordinates
2874      in the ocean (buoyancyRelation='OCEANICP')
2875      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
2876        Theta, Salinity, and Pressure in the parameter list. This routine is
2877        presently contained in find_rho.F. This routine does not give the
2878        correct density for 'POLY3', which would be a z-dependent reference
2879        density.
2880    o cleaned up find_rho
2881      - removed obsolete 'eqn' from the parameter list.
2882    o added two new verification experiments: gop and goz
2883      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
2884    checkpoint46g_pre
2885    
2886    checkpoint46f_post
2887    o Enable tangent linear (forward mode) gradient checks:
2888      - extended active file handling to g_... files
2889      - added TANGENT_SIMULATION to theSimulationMode
2890      - extended grdchk package accordingly
2891    o added tangent linear setup in verification/carbon/code_ftl
2892    o added adjoint setup in verification/front_relax/code_ad
2893    
2894    checkpoint46e_post
2895    o Added new equation of state -> MDJWF
2896      - EOS of McDougall et al., 2002, JAOT, submitted
2897      - caveat: the equation of state is only valid for a smaller (more
2898        realistic?) range of values than JMD95P/Z and UNESCO
2899      - added masks to the calculation of pressure in store_pressure
2900      - added more check values for density in check_eos (ini_eos.F), some of
2901        the old check values are out of the range of the MDJWF-eos, so don't
2902        expect perfect matches for those
2903    checkpoint46e_pre
2904    
2905    checkpoint46d_post
2906    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
2907      'OCEANICP', also initialised field pressure correctly in ini_eos in the
2908      case of pressure coordinates. eosType='JMD95Z' in
2909      combination with buoyancyRelation='OCEANICP' now causes an error.
2910    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
2911      in find_alpha/beta.
2912    checkpoint46d_pre
2913    
2914    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
2915      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
2916    
2917    checkpoint46c_post
2918    o Changes necessary for ocean in p-coordinates
2919     -  Added new buoyancy relation = 'OCEANICP'
2920     -  Added new parameters = gravitySign (this used to be contained inside
2921        the factor dRdZ which I added when we first switched to R coordinates).
2922     X GM/Redi is not compatible (yet)
2923     X bottom drag and no-slip need to be debugged.
2924    checkpoint46c_pre
2925    
2926    checkpoint46b_post
2927    o Added new equation of state -> JMD95Z and JMD95P
2928      - EOS of Jackett and McDougall, 1995, JAOT
2929      - moved all EOS parameters into EOS.h
2930      - new routines ini_eos.F, store_pressure.F
2931    o Added UNESCO EOS, but not recommended because it requires
2932      in-situ temperature (see JMD95)
2933    o Modified formatting for knudsen2.f in utils/knudsen2 and added
2934      unesco.f to be used with POLY3
2935    checkpoint46b_pre
2936    
2937    checkpoint46a_post
2938    o Added (atmospheric) pressure loading
2939      - new field in FFIELDS.h, etc...
2940      - new cpp flag ATMOSPHERIC_LOADING
2941    o Changed hFacC to _hFacC in calc_phi_hyd.F
2942    o Added SHORTWAVE_HEATING to some files for consistency
2943    checkpoint46a_pre
2944    
2945    checkpoint46
2946    further merges from release1_p5
2947    o new ctrl package
2948      - adopted from ECCO environment to enable optimization
2949      - added Eliassen Palm fluxes to controls
2950    o added Eliassen Palm flux controls to gradient check package
2951    o cost package
2952      - Compatible with new ctrl package
2953      - added Eliassen Palm cost hooks
2954      - modif's of existing cost functions
2955    o Adjoint-related bug fixes in kpp:
2956      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
2957      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
2958    o autodiff package
2959      - flow directives:
2960        + new for S/R do_the_model_io
2961        + enhanced for S/R checkpoint
2962        + new gmredi.flow
2963      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
2964        disable adcommon.h/g_common.h by default.
2965      - fixed problem for adjoint of global_max
2966    o modified verification/carbon/
2967    o New setup for adjoint of global_ocean
2968    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
2969    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
2970    o incorporated hooks for sponge layer code (external_forcing.F)
2971    
2972    checkpoint45d_post
2973    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
2974    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
2975      (affects plume_on_slope "cg2d" output)
2976    o add new parameter deltaTfreesurf for free-surface time stepping
2977    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
2978    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
2979    o change phiMin in exp1 (to agree with documentation)
2980    o add new flags:
2981     - T,S forcing inside/outside Adams-Bashforth
2982     - turn off temp,salt advection and/or forcing
2983     - for each tracer, define internal flag for multiDimAdvection & A-B
2984    o monitor: change definition of KE to check conservation of Energy
2985    
2986    checkpoint45c_post
2987    o Removed f90 comments ("!")
2988    o Modified initialisations to enable exf package for MITgcm
2989      (without invoking ECCO_PACKAGE).
2990    o modifications to gradient check package (Martin Losch)
2991      - enable centered differences
2992      - modified format of standard output
2993    
2994    checkpoint45b_post
2995    o cleaned exchange calls in cg2d
2996    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
2997    o included CPP option SINGLE_LAYER_MODE in thermodynamics
2998      to configure barotropic setup (Martin Losch)
2999    o moved some initialisations within bi,bj loop in dynamics
3000      (TAF flow dependency)
3001    o in initialise_varia, moved call packages_init_variables
3002      before convective_adjustment_init
3003      (corresponding adjustment of TAF tape initialisation).
3004    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
3005    
3006    checkpoint45a_post
3007    o compute Rho over the whole domain (extend iMin,jMin indices)
3008    o specific exchange for X-slice domain (case Ny=1)
3009    o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
3010    o solve_for_pressure : set cg2d_x to zero where OBCS are applied
3011    
3012    checkpoint44h_post = checkpoint45
3013    o Fix to restore differentiability:
3014      place at which packages_init_variables is called in
3015      initialise_varia is crucial for reverse control flow.
3016    o modifications in GMRedi to enable stable adjoint
3017      (corresponding modif's in thermodynamics, dynamics)
3018    o added missing hook for sponge layer code in external_forcing
3019    o modified test cost functions
3020    o storing in gad_advection (plus removal of write(0,*)!
3021    o missing headers TR1.h added in convective_adjustment routines
3022    o errorMessageUnit set non-equal zero in eeboot
3023      (conflict on some platforms, e.g. IBM SP3)
3024    o modified carbon verif.
3025    
3026    checkpoint44h_pre
3027    o vertical grid option: allow to put the Interface at the middle between
3028      2 cell-centers ; replace delZ in pkg/kpp by drF.
3029    o GM Advective form: Tracers are advected using the residual transport (=
3030      Euler+GM-bolus); set param GM_AdvSeparate=T to return to previous form.
3031    
3032    checkpoint44g_post
3033    o fix surface correction term in multiDimAdvection (affects plume_on_slope
3034      results) ; ifdef missing in thermodynamics.F
3035    
3036    checkpoint44f_pre,checkpoint44f_post
3037    o added PTRACERS package
3038      This allows an arbitrary number of passive tracers to be integrated
3039      forward simultaneously with the dynamicaly model.
3040      + Implemented so far:
3041        - basic forward algorithm (time-stepping, advection, diffusion, convection)
3042        - I/O and checkpointing
3043        - GM/Redi  *but*  using the GM/Redi coefficient of Salt
3044      + Not implemented so far:
3045        - KPP
3046        - OBCS
3047      + No specific example supplied (yet) but global_ocean.90x40x15 has the
3048        necessary data.ptracer file. Simply use -enable=ptracers and uncomment
3049        line in data.pkg.
3050      + This package is disabled by default since it increases storage.
3051    
3052    
3053    o testscript: added -cleanup option
3054    o Shap_filt: a) new shap_filt S/R to use no-slip BC with S2 filter
3055                 b) enable to filter 2D fields.
3056    
3057    checkpoint44e_pre,post
3058    o re-wrote convective adjustment to use pre-calculated weights
3059      Affects: model/src/convective_adjustment.F, convective_adjustment_ini.F
3060      Adds:    model/src/convective_weights.F, convectively_mixtracer.F
3061      Original calls to convect() still in place.
3062    
3063    chkpt44d_pre,post
3064    o added missing EXCLUDE_MONITOR flags
3065    o changed "e" to "_d" in gmredi_slope_limit, gmredi_slope_psi
3066      (incompatible typ in MIN/MAX expressions caused problems
3067      on IBM SP3)
3068    o in genmake added variable MAKEDEPEND
3069      plus resetting for case SunOS
3070    o added timer_stats.c routine for IBM SP3
3071    o removed variables in dynamics
3072    !!! I forgot to create tag chkpt44d_pre !!!
3073    !!! But chkpt44d_pre = chkpt44c_post    !!!
3074    
3075    o real fresh water flux implemented with non-linear free-surface.
3076    
3077    chkpt44c_pre,post
3078    o few fix (mask in shap_s2, EmPmR in external_field_load,
3079      USE_NATURAL_BCS in solve_for_P);
3080    o add arguments myIter & myTime to S/R obcs_calc & solve_for_P
3081    
3082    checkpoint44b_pre/_post
3083    o merge of relevant stuff from the ecco-branch:
3084      - genmake: removed $S64 overwrite for case SunOS
3085      - pkg/exf: update and corrections for field swapping and obcs
3086      - pkg/ecco: parameter lists for the_model_main, the_main_loop
3087                  harmonized between ECCO and MITgcm
3088      - pkg/autodiff: added flow directives for obcs, mdsio_gl_slice
3089                      updated checkpointing_lev... lists for obcs
3090      - model/src: minor changes in forward_step, plot_field
3091                   added directive for divided adjoint in the_main_loop
3092      - pkg/mdsio: added mdsio_gl_slice
3093    
3094    o check parameters & config (chkpt44a_pre,post)
3095    o OBC and NonLin_FrSurf.
3096    
3097  checkpoint44  checkpoint44
 o apply Shapiro filter on T&S before calc_PhiHyd (stagger time stepping)  
3098  o fix bug in mom_vi_del2uv  o fix bug in mom_vi_del2uv
3099    o select when filters are applied ; add options to zonal_filter (data.zonfilt)
3100    o gmredi: fix Pb in the adiabatic form ; add options (.e.g. Bolus advection)
3101    o update AIM experiments (NCEP input files)
3102    o improve and extend diagnostics (Monitor, TimeAve with NonLin-FrSurf)
3103  o added some stuff for AD  o added some stuff for AD
3104    
3105  checkpoint43  checkpoint43

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