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revision 1.8 by adcroft, Wed Jul 1 22:49:29 1998 UTC revision 1.846 by dimitri, Fri Jun 22 06:41:09 2007 UTC
# Line 1  Line 1 
1  $Header$  $Header$
2    $Name$
3    
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
8      scheme and the corresponding test case (under front_relax dir). For now,
9      only available with Skew-flux form and not yet tested in realistic set-up.
10    o seaice adjoint
11      * add AREA, HEFF, HSNOW as control variable
12        (should not change lab_sea results)
13      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
14    o pkg/seaice: added computation of saltFlux in seaice_growth;
15       For time being, sea ice salinity is assumed constant
16       contribution of snow flooding to freshening of sea ice is neglected.
17       SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
18       defaults to 0.0 in order to maintain backward compatibility.
19       Typical values for SEAICE_salinity are 4 to 10 g/kg.
20    
21    checkpoint59d
22    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
23     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
24     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
25    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
26     and change default value of parameter "GM_Small_Number";
27     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
28       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
29       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
30    o pkg/ecco: cost function when applying pkg/smooth to controls
31    o pkg/ctrl: add forcingPrecond run time parameter
32    o pkg/seaice:
33     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
34     - fix bug in metric terms of u-equation in LSR solver (implicit part),
35       changes verification/lab_sea
36     - rearrange implicit part of u-equation in LSR solver to make it easier to
37       read, understand, and debug. This causes changes at the truncation level.
38     - fix (serious) bug in the boundary conditions (sign error in the implicit
39       part) of the LSR solver. Changes all LSR results.
40     - fixed problem with HSNOW initialization to avoid thick snow when AREA
41       is initilized with small values - does not change lab_sea results.
42     - added HsnowFile initialization capability
43    o pkg/smooth: addition to model/src and pkg/ctrl so allow
44     initialization of pkg/smooth and application to control vector
45    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
46    o dependencies: pkg/profiles requires pkg/cal
47    o pkg/profiles:
48     - added option ALLOW_PROFILES_GENERICGRID
49         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
50         that interpolation information (grid points and coefficients) is provided
51         within the netcdf input files.
52         -> sample matlab scripts can be found in MITgcm_contrib/gael
53         that allow you to prepare netcdf input files.
54     - also modified: cleaner include statements, cleaner error print statements,
55       cleaner stops when error, and more tests of the netcdf input files consistency.
56    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
57    o pkg/seaice:
58     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
59       requires a new routine: seaice_diagnostics_fill.F
60     - make sure that seaice does not move if not forced (pressure replacement
61       method, Hibler and Ip, 1995), changes results
62     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
63     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
64       It is turned off by default (=-1.), because it changes the results.
65     - make it possible to read AREA from a file, too.
66    
67    checkpoint59c
68    o add S/R and diagnostics for oceanic mixed-layer depth
69    o move GMRedi call after all vertical mixing schemes (including KPP)
70    o pkg/thsice:
71     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
72      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
73    o pkg/obcs:
74     - bug fix for balance code
75    o pkg/seaice:
76      - allow values of SEAICE_elasticParm > 1
77      - add new parameter SEAICE_evpTauRelax as an alternative
78        to SEAICE_elasticParm
79      - make lsr boundary conditions free slip (by default), changes result
80      - add code for no slip boundary conditions for lsr
81      - set minimum of zeta to zero (and not 4e8) (changes results)
82      - add a cap on AREA after advecting AREA if seaice_growth is not called
83    o change calculation of Visbeck K:
84      - no longer depend on tapering scheme; instead, compute slope (limited
85        by GM_maxSlope). this is equivalent to what was comuted before with
86        clipping or linear tappering.
87      - fix vertical averaging (wrong by 1/2 level)
88      - leave the old version (but will not be maintained) within
89        #ifdef OLD_VISBECK_CALC / #endif
90      - update output of exp. ideal_2D_oce
91    o change error catch in calc_r_star to improve vectorization
92    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
93      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
94    o adjoint:
95      Re-organized adjoint checkpointing according to Matt Mazloff
96      (but with modifs/completions/cleanups)
97      Storing is now bundled into large arrays to optimized I/O
98      (and second step in cleanup of the_main_loop)
99    
100    checkpoint59b
101    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
102      - export/import (between ocean & coupler) fields needed for ocean DIC.
103    o pkg/seaice:
104      - get rid of three more exchanges seaice_calc_viscosities (required
105        different loop boundaries in seaice_lsr and seaice_ocean_stress)
106      - bug fix in seaice_ocean_stress (update of lab_sea required)
107      - reduce loop boundaries to necessary minimum also in seaice_evp
108      - go back to the old way of computing deltaC/Z as the adjoint likes that
109        better
110    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
111      passive tracer to an Age Tracer) + update output.txt
112    o pkg/exf:
113      - implement A-grid / C-grid selection for wind-stress input files.
114      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
115      for now, in exf_bulk_largeyeager04.F only :
116      - change implementation for case where windspeed + 2. components wind-stress
117        are read-in. AND use rhoConstFresh to convert evap.
118    o pkg/seaice:
119      - use correct EXCH_UV for wind-forcing (on A-grid).
120      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
121        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
122    o pkg/exf:
123      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
124      EXF_INTERPOLATION:
125      - merge global_with_exf/code version of exf_interp_read.F
126        to the main code ;
127      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
128        reading the file ; Important: This options needs to be defined to recover
129        previous code.
130        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
131      - no longer loose real*8 precision along the way when using exf_iprec=64.
132    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
133      - change discretisation of evp-solver in order to avoid another exchange
134        (changes lab_sea) and clean up a little
135      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
136        help the adjoint (this also changes the results slightly)
137      - add a few "_d 0" where they had been missing in seaice_evp.F
138      - cleaning up: remove unused seaice_calc_rhs.F
139    o pkg/exf: some cleaning-up:
140      - change various "constants" into runtime parameters
141      - cleaned-up Large&Yeager04 routine which should eventually
142        replace exf_bulkformulae.F (changed names of S/R and CPP)
143        and merged various ALLOW_ATM_WIND options
144     only used with thsice pkg (in thsice_get_exf.F):
145      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
146        which are used when useStabilityFct_overIce=TRUE (= the default)
147      - change default values of ice & snow emissivity and scale downward LW
148        by ice & snow emissivity.
149    o pkg/thsice:
150     fix few little problems, in thsice_calc_thickn.F:
151      - growth vertically (and not laterally) if iceFrac == iceMaskMax
152      - melt only laterally if hIce < hThinIce (as the comments say)
153      and in thsice_extend.F:
154      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
155      - start to form ice as soon as the minimum ice-volume is reachable.
156     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
157      and cpl_aim+ocn
158    o pkg/kpp
159     - move computation of surface related input fields to KPP into a new
160       subroutine kpp_forcing_surf.F
161     - remove wrong (within bi,bj loops) EXCH calls.
162     - little cleaning (add argument myThid in last position, cvs header ...)
163     - for now, fix conservation problem by exchanging KPPviscAz (may not
164       be the best fix)
165    o pkg/seaice
166     - check for inconsistent evp parameter/cpp-flag combination
167     - remove leftover errIO flat for obsolete name list error handling
168    o OpenAD
169     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
170    
171    checkpoint59a
172    o pkg/seaice: some parameter clarifications and a little bit of clean up
173    o pkg/thsice: rename run-time parameters:
174       himin       -> hIceMin
175       himin0      -> hThinIce
176       hihig       -> hThickIce
177       i0          -> i0swFrac
178       transCoef   -> bMeltCoef
179       frac_energy -> fracMelting
180      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
181       with default values (for now) that do not change the results.
182      remove old version of thsice vars advection in pkg/seaice.
183    o in FFIELDS.h:
184      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
185      - make pLoad & sIceLoad always available (but still only used if
186         ATMOSPHERIC_LOADING is #define).
187    o pkg/kpp: replaced _KPP_RL with _RL
188    o bug fixes for vertical diffusivity computations when both KPP and
189        3D diffusivity arrays are used.
190    o pkg/seaice: fix bug in evp solver, while doing that
191      - change (improve?) discretization of stress computations for both
192        cgrid-lsr and evp solver
193      - add a new routine to compute strain rates
194      - the above changes lab_sea results
195      - add no slip conditions for evp solver (off by default), lsr-version
196        may follow
197      - fix exchange for shear at Z-points (does not change lab_sea)
198      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
199        (to force the user to pick a time step since there is not "safe" way
200        of choosing it)
201      - add principal stress diagnostics
202      - rearrange fields for evp a little to avoid having to call a: too many
203        exchanges and b: exchanges for stress trensor components which we do
204        not have.
205      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
206        of evp, complete rewrite for lsr case (latter is does not yet work
207        in all cases)
208    o pkg/kpp: add code to have mixing in shelf ice caverns
209      - add myThid to all kpp routines (long overdue)
210    
211    checkpoint59
212    o pkg/exf:
213      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
214        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
215      - move exf header files from lower_case.h to UPPER_CASE.h ;
216        add missing cvs Header & Name
217      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
218      - add namelist param. selectStressGridPosition, exf_monFreq
219      - retire many _CLIM routines, and remove data.exf_clim
220        + params moved to data.exf
221        + climsst, climsss now handled by exf_set_gen, i.e.
222          climss?period=0 refers to constant field,
223          climss?period=-12 to monthly forcing
224      - split up namelists in data.exf
225    o pkg/seaice:
226      - remove seaice_exch and seaice_exch_uv
227      - remove superfluous exchange of theta
228      - add myThid to seaice_budget_ocean/ice
229      - add new interface for atmospheric wind forcing (C-grid only)
230        + new routine
231        + two new field (taux, tauy for stress over ice)
232        + removed one global field (DAIRN) for C-grid case only
233    o pkg/thsise
234      - 2nd set of modifs for thsice adjoint in conjunction with exf
235    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
236    
237    checkpoint58y_post
238    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
239      vertical diffusivity, similar to that in MOM4; turned on using
240      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
241      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
242    o Added capability for 3D specification of background vertical diffusion
243      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
244      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
245      "data" file that contains the 3D vertical diffusivity coefficients.
246    o ice dynamics (pkg/seaice) with thsice thermodynamics:
247      - add code within pkg thsice to advect & diffuse sea-ice fields
248      similar to (and will replace) what has been added in  seaice_advdiff.F,
249      but: - conserving Mass, Heat & Salt.
250           - better when using non-linear advection scheme (not yet fully tested)
251           - can also be used in atmospheric set-up (for now, only the diffusion).
252    
253    checkpoint58x_post
254    o IO option for global-file compact format:
255      - add options when generating topology (utils/exch2/matlab-topology-generator)
256      - add I/O capability (pkg/mdsio).
257      - adapt utils/matlab/rdmds.m to read this format.
258      for now long-line format not yet supported by pkg/mdsio (& exch2).
259    o shelfice: add a few diagnostics
260    
261    checkpoint58w_post
262    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
263      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
264      (and replace horiVertRatio in NH code).
265      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
266                         and tutorial_plume_on_slope (sensitive to truncation)
267    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
268      directly to drive seaice model (C-grid only)
269    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
270     - reintroduce computation of wind from stress,
271     - compute tau (in exf_bulkformulae.F) from windstress averaged to
272       mass points to avoid tau = 0
273     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
274    o rdmnc.m: make it work with "global" files created with gluemnc
275    o rdmnc.m : some improvements in dealing with singleton dimension
276      (tested on all testreport mnc output files).
277    o genmake2: disable pkg/profiles if netcdf test fails.
278    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
279    o move call to cal_readparms up to make calendar parameters/variable available
280      to all packages
281    
282    checkpoint58v_post
283    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
284      useDynP_inEos_Zc tested.
285    o pkg/exf: changes to properly interpolate/mask/scale initial fields
286    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
287      and portions thereof.  See read_cs.txt for description and examples.
288    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
289      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
290      following the great-circle arc between those 2 points.
291    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
292      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
293    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
294     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
295     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
296     - still needs work (not working with some options ; efficiency to improve)
297       and serious testing.
298     - use this scheme for temperature & salinity in 2 advection test exp.:
299       advect_xy & advect_xz, respectively.
300    
301    checkpoint58u_post
302    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
303    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
304    o testreport: add option "-skipdir" to skip some test.
305    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
306      momentum calculation.
307    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
308    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
309      remove checkpoint.F and the_correction_step.F (no longer used);
310      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
311    o add option (linFSConserveTr) to correct for tracer source/sink due to
312      Linear Free surface
313    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
314    o pkg/thsice: fix reading mnc-pickups
315    
316    checkpoint58t_post
317    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
318    o pkg/mdsio:
319     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
320       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
321       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
322     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
323     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
324       either MDS_READ_FIELD or MDS_WRITE_FIELD )
325     - new S/R (to replace MDSWRITEMETA), which allows to write more
326       informations (variable names, time ...) to meta files.
327     - modify rdmds.m to give back the meta file content.
328    o pkg/diagnostics: change vertical interpolation to be safer, and more
329       flexible (define p-levels to interpolate to in data.diagnostics);
330      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
331       diagnostic pointer.
332    o pkg/seaice: more cleaning up of seaice_growth, added many comments
333    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
334    o fix multi-category seaice:
335     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
336       SEAICE_MULTICATEGORY
337     - fix short wave heat flux
338    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
339       and allow to use EVP solver. Change forward lab_sea: test both EVP
340       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
341    o Initial check-in of lab_sea adjoint
342      (very similar to natl_box_adjoint/code_seaice)
343      * used C-grid and EVP solver
344      * used KPP, GM/Redi
345      * uses inAdExact=.TRUE.
346      * gradient checks fail for both ADM and TLM
347        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
348        f.d. gradients actually seem more problematic than ADM, TLM gradients;
349        issue is related to forward mismatch between g77 an ifort
350    o pkg/seaice: overhaul of thermodynamics
351     - growth.F and groatb.F are replaced by new routine seaice_growth.F
352     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
353     - move a few global fields out of SEAICE.h into seaice_growth.F and
354       make them 2D (FICE/QNETO/ ...)
355     - remove FO (it is the same as QNETO)
356     - introduce a few local fields to avoid modifying external fields such
357       as atemp, etc.
358    
359    checkpoint58s_post
360    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
361      changed exf_set_gen.F so that
362        genperiod=0 means input file is one time-constant field and
363        genperiod=-12 means input file contains 12 monthly means
364    o CG2D: use pre-computed solver main-diagonal (stored in common block);
365      this affects truncation error ; generate new output file for exp. which
366      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
367        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
368        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
369        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
370        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
371        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
372    o start implementation of deep-atmosphere and anelastic formulation
373    o verification: remove 2nd copy of input files and use script "prepare_run"
374      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
375    o mom_common/vecinv/fluxform: fix a few initialisation isssues
376    o profiles: fix for multithreaded case
377    
378    o diagnostics: rename few diags:
379      s/'PRESSURE'/'RCENTER '/g
380      s/'TICE    '/'oceFreez'/g
381      s/'TAUX    '/'oceTAUX '/g
382      s/'TAUY    '/'oceTAUY '/g
383      s/'SWFLUX  '/'oceQsw  '/g
384      s/DIFx/DFxE/g
385      s/DIFy/DFyE/g
386      and add few ocean-forcing diagnostics:
387      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
388    o modifications to pkg/seaice/growth.F and budget.F, which change results of
389      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
390      as actual snow thickness.  It now refers everywhere to effective snow
391      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
392    
393    checkpoint58r_post
394    o modifications to pkg/seaice/growth.F, which change results of
395      lab_sea experiment: fixes pertain to melting snow over open water, to
396      masking EVAP under sea ice, and to using the correct AREA variable for
397      computations of EVAP, PRECIP, HSNOW, and GHEFF
398    o add ability to read bathy, salt, and theta using MNC (off by def)
399    o add flooding algorithm and advection of HSNOW for pkg/seaice;
400      both are turned off by default and do no change any results
401    o seaice advection with pkg/thsice: a step toward the use of non-linear
402      advection scheme, but #ifdef or commented out for now (requires more EXCH).
403    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
404      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
405      in natl_box (affects results @ truncation level: update output.txt)
406    o multi-threading and IO:
407      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
408      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
409        (needed to work with SingleCpuIO): tested in all verif. exp.
410    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
411      affects the results (but none of the verification test uses this scheme).
412    o Adding some pkg/diagnostics capability to pkg/seaice
413      (will certainly be subject to changes)
414    o ctrl: adding new control variables:
415      lwflux, lwdown, evap, snowprecip, apressure, runoff
416    
417    checkpoint58q_post
418    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
419      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
420      high_res_cube configuration by 4% on Columbia.
421    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
422      add (in global_with_exf/code) a version of EXF_INTERP_READ without
423      dynamical allocation (seems to work in multi-threaded).
424    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
425      single CPU io) so that TAF does not have to see EESUPPORT.h
426    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
427    
428    checkpoint58p_post
429    o obcs: stop if obcs is used with useCDscheme = .true.
430    o shelfice:
431     - fix a sign error so that no slip at shelfice interface works
432     - remove stop for combination non-hydrostatic code and shelfice. That does
433       not mean, that the results are correct, but at least they are numerically
434       stable
435    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
436    o added adjoint exch routined for all exch*3d* routines
437      and updated flow directives
438    
439    checkpoint58o_post
440    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
441      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
442    o change controling S/R for writing pickup file (new S/R do_write_pickup)
443      and clean-up reading/writing of pickup files.
444    o fix local version of read/write pickup (NH part) in rotating_tank/code
445    o simplify EXCH interface:
446     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
447     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
448    o added the regrid package
449    o shelfice:
450     - add a simple boundary layer scheme to reduce noise
451     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
452    
453    checkpoint58n_post
454    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
455       local variable (not in common block).
456    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
457      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
458      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
459        to work with SingleCpuIO.
460    o add "_d 0" to real constant of pkg/cfc subroutines ;
461       update exp. cfc_exemple & tutorial_cfc_offline output files.
462    o multi-threading and IO:
463      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
464        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
465      - barrier before and after reading.
466      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
467      - avoid using MDS_WRITELOCAL for LAND pkg output.
468      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
469        common-block variables ; Allows multi-threading with master-thread IO.
470    o change default MAX_NO_THREADS from 32 to 4 ;
471      and stop cleanly when MAX_NO_THREADS is too small.
472    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
473    
474    checkpoint58m_post
475    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
476       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
477    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
478       keep global_ocean.90x40x15 (for AD testing) with former secondary test
479       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
480    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
481        add MITgcm_tutorials (= code + all the tutorials)
482    o ecco, option to compute cost for total ssh (mean+anom)
483    o consistent with addition of ptracer and ssh in pkg/profiles
484    o profiles: adding ptracer and ssh
485    o testreport: change multi-test output-file name
486      (from output.txt.{name} to output.{name}.txt)
487    o profiles: now ok for mutli-tiles case
488    o seaice: add 4 parameters for different advection schemes for area,
489      (effective) seaice thickness, enthalphy, and snow height. Their default
490      is the standard parameter SEAICEadvScheme
491    o calc_gw:
492     - add cosFacU in zonal viscous flux (harmonic.visc.).
493     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
494       of tutorial_plume_on_slope.
495    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
496    o calc_gw: true flux-form, account for horizontal grid spacing.
497      update rotating_tank results, but not plume_on_slope (affected at
498      truncation level, 11 digits).
499    
500    checkpoint58l_post
501    o calc_gw:
502     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
503     - remove side-drag for now (need to fix it); update plume_on_slope results.
504     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
505    o commit code to make SST/SSS weights spatially variable
506      (based on either variable in-situ or variable initial T/S weights)
507    o pkg/ecco:
508      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
509        now based on horizontally varying weights wthetaLev, wsaltLev
510      * cost_averagesflags now returns year indices in addition to day, month
511      * sflux balance is performed on annual basis
512        (sflxumm, sfluxmm2, bal_sfluxmm)
513      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
514        including separate counting and multipliers
515    o pkg/rbcs
516      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
517    
518    checkpoint58k_post
519    o testreport:
520     - always build in dir. "build" (if not there, mkdir build instead of building
521       & running in input)
522     - run in dir run (if it exists), in build otherwise.
523     - call prepare_run (if input/prepare_run exists)
524     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
525    o pkg/exf modifications to interpolation and rotation routines for more
526       reasonable treatment of North Pole singularity: for tracers North Pole
527       value is set to northernmost zonal-mean value, for zonal velocity it is
528       set to zero, and for meridional velocity it is set to northernmost value.
529    o pkg/exf/exf_check_range.F
530     - add tile index to diagnostics and move stop statement to the very
531       end of the routine.
532    o pkg/diagnostics: (diagnostics_main_init.F)
533      define title of isomorphic variables according to the current config.
534    o pkg/thsice with pkg/seaice dynamics:
535    - fix domain of computation (interior only, required for exf) and do exchanges
536    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
537    o towards a standard way of dealing with multi-threading in MONITOR
538      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
539    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
540       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
541    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
542    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
543    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
544       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
545    o tracer advection:
546     - clean-up and simplify calc_common_factors.F
547     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
548       advection subroutine (but still not used within DST advection S/R)
549    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
550    
551    checkpoint58j_post
552    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
553      from file (collects calls previously in FORWARD_STEP)
554    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
555    o adjoint store dir. adjusted accordingly
556    o genmake2
557      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
558    
559    checkpoint58i_post
560    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
561      on wind stress (SEAICEstressFactor defaults to 1.)
562    o Total number of Timers is finite (<=40): comment out 2 non-essential one
563      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
564    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
565      on CS-grid: no longer loosing mass.
566    o exf & curvilinear-grid: no longer modify longitude xC & xG.
567    o pkg/ggl90: fix sloppy output and fix a bug
568    o pkg/seaice: added SEAICEuseEVPpickup parameter
569      - Set to false in order to start EVP solver with
570        non-EVP pickup files when using SEAICEuseEVP
571      - fix sign error in diffusion in seaice_calc_rhs
572    
573    checkpoint58h_post
574    * Modifications for bottom topography control
575      o replace hFacC by _hFacC at various places
576      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
577      o add non-self-adjoint cg2d_nsa
578      o update autodiff support routines
579      o re-initialise hfac after ctrl_depth_ini
580      o works for 5x5 box, doesnt work for global_ocean.90x40x15
581    * Adding verification for 5x5 box (4-layer) bottom topography control
582    
583    checkpoint58g_post
584    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
585       used for mean seasonal cycle, mean diurnal cycle); add an example
586       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
587    o pkg/ggl90:
588      - add parameter (minimum surface kinetic energy)
589      - fix bug (avoiding division by zero)
590    o couple pkg/thsice to pkg/seaice:
591      - modify advection in seaice to accomodate new scalar fields to be advected
592      - only muliDimAdection scheme work with seaice/thsice
593      - mapping of thsice-variables to seaice-variables, back and forth
594      - does not break the verification experiments, but does not give the
595        desired results either
596    o pkg/seaice
597      - make (default) second order advection a bit less confusing?
598    
599    checkpoint58f_post
600    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
601      to pkg/seaice):
602      - new routines thsice_map_exf and thsice_get_exf provide the interface
603      - add an additional formal parameter to thsice_solve4temp
604    o pkg/exf:
605      - add new fields wspeed, snowprecip (to be able to couple to thsice)
606      - correct Stefan-Boltzmann constant
607      - new parameter for longwave surface emittance
608      - separate some stuff from exf_bulkformulae into new routines  
609        exf_radiation, exf_wind
610      - add new parameters and constants: longwave emissivity for ocean, ice
611        and snow, evaporation parameters over ice
612      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
613        either wind from stress or stress from wind
614    o pkg/thSIce:
615    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
616    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
617       and THSICE_CALC_THICKN
618    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
619    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
620      to make debugging easier.
621    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
622    o pkg/bulk_force:
623      - clean-up comments and parameters ;
624      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
625    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
626      generate new output for test-experiment: aim.5l_cs.thSI
627    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
628      testreport accordingly
629    
630    checkpoint58e_post
631    o SEAICE_CGRID adjoint done
632    o R_STAR adjoint implemented.
633      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
634      * need to sort out init. of h0facc, etc.
635    o Make pkg/profile fully independent of ecco,cost, etc. stuff
636      to be able to use it in pure forward.
637    
638    checkpoint58d_post
639    o upgrade simple test-experiment to tutorial example:
640     step.1: duplicate the experiment and (step.2) will remove the old copy.
641      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
642      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
643      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
644      tutorial_global_oce_biogeo    <- copy of dic_example
645      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
646      tutorial_plume_on_slope       <- copy of plume_on_slope
647      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
648      tutorial_global_oce_optim     <- empty for now (David ?)
649      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
650     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
651    o correct a sign problem in cost_scat.F
652    o obcs and ptracers: fix boundary conditions for advections schemes
653      with larger stencil
654    o thsice adjoint: start
655    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
656      completeness
657    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
658      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
659    o ptracers adjoint:
660      * avoid extensive recomputatations
661      * fix missing re-init. of gptr (missed by TAF)
662    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
663      me to turn off the excessive output to STDOUT that this package produces
664    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
665      and add those terms in Vector-Invariant formulation.
666    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
667      if the control period (xx_hfluxperiod etc) is 0
668    o in profiles pkg, clean routines and fix details
669    o in ecco pkg, reading ssh data:
670      fix problem in case the model does not start at iter0=0
671    o fix mnc-pickup/restart for ptracers
672    o new package prifiles:
673      code to compute profile-based cost by Gael Forget
674      (modifs in ecco, ctrl, autodiff)
675    o Benign bug fix in initialization (spotted by M. Mazloff) of
676      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
677    
678    checkpoint58c_post
679    o adjoint: finish NLFS adjoint and provide reference output in
680      verification/global_ocean.90x40x15/results_ad_nlfs
681    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
682      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
683      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
684      with SEAICE_CGRID defined.
685    o move calendarDumps from "data" to "data.cal" and clean-up the code
686      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
687    o add useEXF & useCAL flags (for now, set in hard-coded way)
688    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
689      (were missing in NH mode, and wrong in quasihydrostatic mode).
690      waiting for Chris updated version of calc_gw to add those CALLs.
691    o fix bug in quasihydrostatic S/R ;
692      add a test for this option: global_ocean.90x40x15.qshyd
693    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
694      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
695    o add on/off flag useOffLine for package OFFLINE
696    o seaice:
697      - modify advection so that it works also on the C-grid
698      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
699        problem in multi-tile runs with C-grid
700      - add flags for clipping ice velocities and/or masking solver forcing
701      - fix drag (ocean on ice) formulation and a bug that caused noise in the
702        C-grid solver
703      - added a few comments to seaice_diffusion.F
704      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
705        are now exclusive)
706      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
707        required re-ordering the code a little:
708       + make DAIRN global variable (defined in SEAICE)
709       + move computation of the viscosities eta and zeta into a new separate
710         routine (because I need to recompute them in seaice_ocean_stress.F)
711    
712    checkpoint58b_post
713    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
714      update output.txt of exp. aim.5l_cs.thSI
715    o various mnc cleanups and improvements:
716      + shrink lookup tables by factor of ~4
717      + better error reporting when running out of lookup space
718      + able to handle longer path/file names (up to 500 chars)
719    o adjoint:
720      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
721      - TBD: "hidden" mom_vecinv recomp. in dynamics
722    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
723     (allow to differentiate between forcing components using new integer flags:
724      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
725     and add new flag to put Dissipation tendency out of Adams-Bashforth.
726    o ecco
727      - enable trend removal from SSH anomaly obs.
728    o adjoint
729      - a fix for PmEpR when #undef EXACT_CONSERV
730      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
731      - try to fix "hidden" recomp. in forward_step for NLFS
732        (NLFS seems broken sometimes after I checked it in)
733    o seaice:
734     - add c-grid version of the dynamic solver:
735       + three new routines that are the c-grid substitute lsr, dynsolver
736         and ostres
737       + put a few fields that were local to dynsolver into global common
738         blocks, so that I can move the computation of stresses etc into
739         seaice_lsr (saves coding but may break the adjoint).
740     - replace more hardwired parameters by runtime parameters
741     - add ice masks that mask the rhs of the implicit solvers where there
742       is no ice (commented out in seaice_dynsolver, because i am not sure
743       if this works properly), eventually this should replace the clipping
744       of ice velocities in seaice_dynsolver to +/-40cm/s.
745    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
746      include it only where its needed
747    o move balancing of fluxes before the call of external_forcing_surf
748    o seaice:
749      - correct units of turning angles (now they are really in degrees)
750      - move computation of GWATX/Y out of main routine into dynsolver
751      - initialize GWATX/Y in seaice_init
752    o Apply mask on Fresh-Water flux (needed for SSH forcing).
753      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
754    o seaice: add runtime flags for turning angles (default to zero)
755    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
756      and trend from exf forcing and ctrl control adjustments
757    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
758      (since checkpoint57x_post)
759    o change the default rotation period to 86164.s = the Earth rotation
760    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
761      and based on a reference stratification. Tested within hs94.cs-32x32x5.
762    o seaice advection: add code for choosing between the default (2nd order
763      central differences) and multiDim advection schemes provided by
764      pkg/generic_advdiff
765    o seaice:
766      - removed all references to SEAICE_GRID.h fields from
767        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
768        (cubed-sphere configuration will change a little)
769      - grid computations in seaice_init are obsolete now.
770      - cleaned up code a little so that is easier to read (hopefully).
771      - added new (better?) discretizations of default advection and diffusion
772        (turn on with SEAICEuseFluxForm)
773      - replace 1 in 3d global fields by kSurface in growth.F
774      
775    checkpoint58a_post
776    o seaice:
777      - bug fix in advect.F
778    o shelfice:
779      - separate shelfice load anomaly from pload (breaks with time
780        dependent forcing), => introduce constant field shelficeLoadAnomaly.
781        Its default is 0., but it may be computed more cleverly from (unknown)
782        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
783        done offline. A good approximation of the pressure load anomaly is
784        necessary to avoid large initial adjustment processes underneath
785        deep-reaching shelfice.
786      - small fix in ISOMIP shelfice_thermodynamics
787      - add more sophisticated thermodynamics of Hellmer (1989), this is
788        now the default
789      - give a few constants more intuitive names
790    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
791      if bulk formulae are used in long integration (especially EmPmR). Turn
792      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
793      if balancePrintMean, the imbalance that is substracted is printed to
794      STDOUT.
795    o fix bug (typo) in obcs_apply_eta.F
796    o add a new package shelfice which enables us to model the circulation
797      underneath shelf-ice with draughts of hundreds of meters.
798     - works
799     - to do: + include improved thermodynamics
800              + check whether kSurfC (from model/inc/SURFACE.h) can be used
801                instead of new field kTopC
802              + can we use topoFile, Ro_surf and existing code in ini_depth.F
803                instead of new field R_shelfIce and new code in ini_depth.F
804                and ini_mask_etc.F?
805              + adjust vertical mixing schemes?
806    o seaice pkg:
807     - add a cpp-flag to include a simple formula for a salinity dependent
808       freezing point of sea water at the surface
809     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
810       meridional stresses are now different (and hopefully correct)
811    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
812       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
813       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
814    o pkg/diagnostics: add options and parameters for regional-statistics
815       diagnostics ; define regions by reading a region-mask from a file
816       (might add other options later)
817    o pkg/bulk_force:
818     - add option and parameters to use AIM surface-flux formulae.
819     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
820       others forcing fields (defined in PARM05, parameter file "data") are loaded
821       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
822     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
823     - use the right EXCH call for uwind,vwind (to work on CS-grid).
824     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
825       and parameters (note: calcWindStress replaces .NOT.readwindstress).
826     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
827    
828    checkpoint58
829    o add "--embed-source" option to genmake2 which, when the supporting
830      tools can be compiled (as determined by genmake2) will turn on the
831      embed_files package which then embeds the entire MITgcm source code
832      (*.[fFhc] + Makefile) used for the build within the executable
833      - requested by CNH but off by default
834      - adds a paltry <9MB to the mitgcmuv executable in most cases
835      - only writes the output when useEMBEDSRC in eedata is true
836    o clean up 3-dim. relaxation codes:
837      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
838      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
839      * Thanks to Tom Haine for testing!
840    
841    checkpoint57z_post
842    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
843      affects output (@ truncation level) of exp. plume_on_slope ; updated.
844    o fix the pickup behavior for obcs in combination with ptracers
845    o fix a bug in ptracers_external_fields_load
846    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
847      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
848    o transfered surface NH pressure to eta field (if exactConserv).
849    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
850         and update lab_sea output.txt file.
851    o completing 3-dim. relaxation code: additional term
852         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
853      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
854      * At compile time, in "EXF_OPTIONS.h" set
855          #define  ALLOW_CLIMTEMP_RELAXATION
856          #define  ALLOW_CLIMSALT_RELAXATION
857      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
858          tauThetaClimRelax3Dim = 15552000.0,
859          tauSaltClimRelax3Dim  = 15552000.0,
860      * 3 cases:
861          1) Use a constant-in-time 3-dim. field
862          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
863          3) Real-time relax. to time-evolving prescribed field
864    o Adding Laplacian-type smoothness constraint on
865      initial and boundary (forcing) controls (ic, bc)
866      * enable at compile-time via
867        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
868      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
869      * Absolute scale somewhat unclear so far
870      * no area weighting was included since no other cost term does so far
871    
872    checkpoint57y_post
873    First step for a NLFS adjoint
874    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
875    o new init. routines for calc_r_star, calc_surf_dr
876    o still need to deal with ini_masks_etc
877    o testreport seemed happy
878    checkpoint57y_pre
879    
880    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
881    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
882    o add new offset feature to offline pkg (plus minor cleanup)
883    o cfc fixes for final year of integration
884    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
885      be in GCHEM_OPTIONS).
886    
887    checkpoint57x_post
888    o fix testreport Pb in multiple test experiment.
889    o cleanup our namelist syntax in verification:
890      - make it more F95 standards compliant (some work still needed)
891      - allows the vast majority of our tests to work with gfortran
892    o Non-Hydrostatic:
893     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
894     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
895    o Allow to apply AB on T,S rather than on AB(gT,gS):
896     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
897     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
898       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
899     - need a "clever" read_pickup to restart from the other AB formulation
900    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
901    o remove some unused variables (reduces number of compiler warnings)
902    o adjoint
903      * Disable useVariableViscosity for adjoint for time being
904        (there are a number of extensive recomputations)
905      * Initialize certain variables needed for adjoint
906    
907    checkpoint57w_post
908    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
909                 fix the singleCpuIO RS version of MDSWRITEFIELD
910       and add a WARNING if using globalFiles=T with multi-processors.
911    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
912      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
913    o tracer advection scheme:
914      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
915       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
916       was not very convenient).
917      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
918       (further tests needed for the implicit DST & Flux-Limiter schemes).
919    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
920      and sRef for convenience, handy, when you want to initialize
921      ptracers in a large domain with a constant non-zero value. Also,
922      untangle ptracers_init.F a little.
923    
924    checkpoint57v_post
925    o change dome exp. to use variable viscosity in side-drag terms.
926    o remove all the files from the cfc_offline test since they are now
927      incorporated into tutorial_cfc_offline which has been producing
928      identical results for a few days of testing
929    o add new parameter: sideDragFactor to enable half-slip-side BC
930      and change side-drag S/R to use viscosity from mom_calc_visc
931      (can switch back by setting sideDragFactor=0.); affects results at
932      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
933       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
934    o vorticity & strain are now computed without masking, to account for
935      no-slip-side BC in variable viscosity calculation ; mask is applied
936      anyway later on, before computing advection/coriolis terms.
937    o modify exp4 to test new obcs support for reading from external files
938      and for passive tracers
939    o fix behavior of ptracers_monitor when monitor output is written to a
940      netcdf-file; still not independent of monitor.F (writes in the same
941      file).
942    o change default value of tRef (put a uniform, meaningful value for ocean
943      & atmos) and initialize sRef (was missing, as Martin mentioned).
944    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
945      to be proportional to enstrophy dissipation length.  Thus,
946       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
947      This is now consistent with Smagorinsky and with the manual.
948    
949    checkpoint57u_post
950    o OBCS and PTRACERS: add open boundary support for passive tracers
951      - either use homogenous (pseudo) v.Neumann conditions or prescribe
952        OB-values from file; this is not different from the way theta and salinity
953        are treated
954      - however, Orlanski-radiation conditions are not supported, and the model
955        will stop if you use pTracers and Orlanski at the same time.
956      - beefed up the rountine obcs_external_fields_load: now only those open
957        boundary values are overwritten with values from files for which there
958        are really files, otherwise the OB-fields remain untouched. This makes
959        it possible to use different OBs at different ends of the domain (as
960        with EXF)
961    o reduce number of exch calls in shap_filt (s2).
962    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
963      truncation level) 4/5 MLAdjust test results (11&12 digits match).
964    
965    checkpoint57t_post
966    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
967    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
968      same truncation, independent of the face number: affects affects several
969      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
970    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
971      note that biharmonic viscosity + no-slip was not tested in any experiment.
972    o fix bug in non-linear free-surf side-drag ; generate new output for
973      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
974    o make mnc honor the writeBinaryPrec flag for most kinds of output
975    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
976    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
977      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
978    o add brackets in multi-terms sum to get same truncation, independent of
979      the face number (manage to get exactly same value of gU,gV at the cs-edge)
980      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
981    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
982      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
983      a maximum grid-scale Reynolds number.  Also, changes all length calculations
984      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
985      Suggested values of viscosity parameters found in mom_calc_visc.
986      Many new viscosity diagnostics available.
987    
988    checkpoint57s_post
989    o Add clearing-house for viscosity calculations, mom_calc_visc and
990      correct numerous bugs in LeithD and Smagorinsky discretizations.  
991      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
992      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
993      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
994      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
995      The Strain-Tension form is now called with useStrainTensonVisc=.true.
996      ViscAhStrain and viscAhTension are now retired.
997    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
998    o In response to JMC's bug report, genmake2 now ignores any soft-links
999      that it finds in the *current* directory when searching for files.
1000      Soft-links found in any other source directories will still work as
1001      they did before.
1002    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
1003      a C routine to unlimit the stack size
1004    o mnc-ify pkg/aim snapshot vars
1005    o mnc-ify pkg/land as requested by Daniel
1006    o various changes to mnc including:
1007      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
1008      - output can now be grouped so that all files within a group
1009          change the ITER portion of their names in lock-step together
1010      - can now read ("global") PER-FACE (in addition to PER-TILE) files
1011          and works with both EXCH1 and EXCH2 (but needs more testing)
1012      - writing works for all verification test cases w/ g77 on Linux
1013    
1014    checkpoint57r_post
1015    o make MNC variable initialization happen earlier
1016    o add diagnostics for (almost) each term of the momentum Eq.
1017    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
1018    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
1019    o remove MINIMAL_TAVE_OUTPUT option ;
1020      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
1021    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
1022      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
1023    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
1024    o add time-dependent SST, SSS control
1025    o cost terms in ecco/ modularized (new cost_generic.F)
1026    o cost_averages routines are modularized (new cost_averagesgeneric.F)
1027    o new infrastructure for seaice model vs. obs misfits in seaice/
1028      * driver from the_main_loop.F is seaice_cost_driver.F
1029      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
1030      * gradient check in Exp. 6a of natl_box_adjoint/
1031    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
1032      (see README file)
1033    
1034    checkpoint57q_post
1035    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
1036    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
1037      - bug was reported by Jean-Michel and Ian Fenty
1038    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
1039      update exp. cpl_aim+ocn output.
1040    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
1041      Needed for high-res. runs with large global files
1042      to be able to limit tapelev size
1043    o Changed some tests for adjoint:
1044      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
1045      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
1046      * global_ocean.90x40x15/ back to default 3-level checkpointing
1047    o Modifications to enable scripted COMMON to MODULE conversion
1048      * verification/OpenAD/code/ has necessary scripts and description;
1049      * converts, compiles and runs successfully;
1050    
1051    checkpoint57p_post
1052    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
1053    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
1054      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
1055    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
1056    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
1057      (was already the case for dissipation with mom_vecinv,
1058       and also the case for grad.PhiHyd when staggered-timeStep)
1059      This will allow to put dissipation out-off the AB time-stepping.
1060     Unfortunately, affects truncation error. Update output of exp. that "fails"
1061      (cg2d matching number) and leave the others for later: front_relax(10),
1062      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
1063      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
1064    
1065    checkpoint57o_post
1066    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
1067      (2) its ready to be documented during the 20050801 DocFest
1068    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
1069      for ideal_2D_oce and lab_sea on linux_ia32_g77
1070    o set to #undef CTRL_SET_OLD_MAXCVARS_30
1071      in global1x1_tot/code_seaice_adj to access indices 32, 33
1072      (worth another tag)
1073    
1074    checkpoint57n_post
1075    o adding precip control xx_precip 32
1076    o adding swflux control xx_swflux 33
1077    o Replacing 10 forcing penalty cost routines by 1 generic.
1078    o Implementing partitioning in time-mean and variable adjustment
1079      for atmos. state.
1080    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
1081    o in natl_box_adjoint:
1082      * updated exp 1 to 10
1083        (but does not have time-mean vs. variable split results yet)
1084    o updated global1x1/*_seaice_adj/
1085      to incorporate latest changes
1086    o enable useSingleCpuIO for mdsio vector routines
1087      (applies in particular to tapelev I/O)
1088    o removed inefficient K-loop in all active_file*control*.F
1089    
1090    checkpoint57m_post
1091    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
1092      and advect_cs (use EXCH-2 and standard cs-32 grid files).
1093    o pkg/exch2: filling of face-corner halo regions is optional
1094      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
1095    
1096    checkpoint57l_post
1097     tag before updating tutorials (pre-release-2)
1098    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
1099       for output and interpolation of input fields onto model grid)
1100    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
1101       Affects results of exp. rotating_tank ; update output.txt.
1102    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
1103          and taking the square quantity and/or using a fraction-weight field.
1104    o fix aim_diagnostics_init.F mate numbers.
1105    o add mnc output capability to diagnostics/diagstat and update
1106      our cvsignore files for the ACSII output generated
1107    
1108    checkpoint57k_post
1109    o lab_sea now uses diagnostics package and provides a suite of
1110      new EXF diagnostics output.
1111    
1112    checkpoint57j_post
1113    o exf
1114      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
1115        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
1116        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
1117      * extended diagnostics output
1118        - now includes all EXF variables
1119        - hs, hl moved to common block
1120        - separate S/R for diagnostics, called after ctrl vector is added
1121        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
1122        - EXFqnet contains true Qnet (i.e. includes qsw)
1123      * updated verif. lab_sea, global_with_exf
1124      * Rearranging hflux (exf_mapfields -> exf_getforcing)
1125        to ensure that diagnostics sees a true EXFqnet
1126    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
1127    o diagnostics pkg: change pointers so that 1 diagnostic can be used
1128      several times with different frequencies.
1129    o mnc-ify the thsice package as requested by Daniel Enderton
1130      - the monitor--MNC output needs work
1131      - many attributes need to be added (most are currently blank)
1132    o mnc-ify theaim_v23 package as requested by Daniel Enderton
1133      - many attributes need to be added (most are currently blank)
1134    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
1135    o add Sadourny like discretization to the 4th.O vorticity advection scheme
1136    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
1137      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
1138         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
1139    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
1140     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
1141    
1142    checkpoint57i_post
1143    o Diagnostics package was changed: diagnostic allocation is now deactivated
1144      by setting an empty file name in the namelist (used to be by setting 0 frequency)
1145    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
1146      add 1rst Order upwind vertical Shear.
1147    o add a quick fix for A/B checkpointing in OFFLINE mode
1148    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
1149      end-run around the C/Fortran linking horror in eesup/src/timers.F
1150    o added pkg/runclock: allows user to terminate run based on wall clock
1151    o added non-hydrostatic scaling parameter: nh_am2
1152    o pkg/my82: futile attempt to make results compiler-independent by adding
1153      some "_d 0", etc. no effect.
1154    o for mnc output, fill the 'T' coordinate var with myTime and create a
1155      separate 'iter' variable for iteration count
1156    o pkg/diagnostics:
1157      add new capability: output of Global/Regional & per-level statistics ;
1158      tested against monitor output (including land & thSIce) on various exp.
1159    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
1160    
1161    checkpoint57h_done
1162      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
1163      data.diagnostics, data.gchem, data.ptracers) is done.
1164    
1165    o pkg/diagnostics: prepare for Global/Regional statistics.
1166      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
1167    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
1168      and rename it: DIFFERENT_MULTIPLE
1169    
1170    checkpoint57h_post
1171    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
1172    o pkg/diagnostics: change output frequency, now in seconds (instead
1173      of Nb of iterations). This requires to change data.diagnostics.
1174    checkpoint57h_pre
1175    
1176    o in mnc, let the user create the output dir if both mnc_outdir_date
1177      and mnc_outdir_num are false
1178    o add fflags() to pkg/diagnostics which allows one to specify, on a
1179      per-file basis, the file precision [default behavior is unchanged]
1180    o added diagnostics to pkg/kpp, including computation of mixed layer
1181      depth based on a temperature/density criterion
1182    o updated verification/natl_box to test the new pkg/kpp diagnostics
1183    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
1184    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
1185    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
1186      not mnc -- this mistake was found by JMC and is now corrected
1187    
1188    checkpoint57g_post
1189    o add Adams-Bashforth 3rd Order time stepping:
1190      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
1191      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
1192    checkpoint57g_pre
1193    
1194    o make lambda[Theta,Salt]ClimRelax spatially varying
1195      (default remains spatially uniform constant based on tau)
1196    o added new control variables
1197      * init. uVel, vVel, etanN
1198      * lambda[Theta,Salt]ClimRelax
1199    o separate masks used for ctrl_pack/unpack 'from write_grid' output
1200      (suggested by G. Forget)
1201    
1202    checkpoint57f_post
1203    o add parameter "baseTime" = model base time = time at iteration zero
1204      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
1205      account for baseTime shift
1206    o move Coriolis arrays from PARAMS.h to GRID.h
1207    checkpoint57f_pre
1208    
1209    o mnc-ifying the seaice package
1210    o introduced an alternative length scale calculation for use in the limiting
1211      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
1212    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
1213    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
1214      as well as grad(vort3).  Made it compatible with both approximate form
1215      for the cubed sphere and full form of these gradients.  Added flag
1216      useFullLeith to select between approximate and full form.  
1217    o add "d0" in getcon.F to reduce differences between compilers/platforms
1218      update output.txt of exp. fizhi-gridalt-hs
1219    o change port_rand funtion to allow to set the seed.
1220    o fix obscure MNC bug involving conversion between reals and integers
1221      - it caused no problems with certain (eg. gcc, ifc) compilers but the
1222        new version is now more standards-compliant
1223    o adjoint-related modifications
1224      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
1225      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
1226      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
1227    
1228    checkpoint57e_post
1229    o Adding eddy stress controls a la Ferreira et al.
1230    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
1231    
1232    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
1233      update output.txt of exp. fizhi-gridalt-hs
1234    o add more "Z" dimensions and associated coordinate vars to MNC
1235    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
1236    o parameter calendarDumps: when set, approximate months (30-31 days) and years
1237      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
1238      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
1239      months and years.  Requires pkg/cal.
1240    o diagnostics: add pickup functionality
1241      - off by default for backwards compatibility
1242      - current version only uses MDSIO -- MNC will be added
1243    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
1244    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
1245    
1246    checkpoint57d_post
1247    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
1248    o modify verification/ideal_2D_oce so that it tests the creation of mnc
1249      output from the diagnostics package
1250    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
1251    o make genmake2 more portable by using ".$FS" instead of ".f" for more
1252      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
1253    o add coordinate variables to the MNC output from the diagnostics package
1254    o change MNC-flags default value: true when useMNC=TRUE
1255    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
1256      the ability (off by default) to read the grid information using MNC
1257    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
1258    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
1259    o do snap-shot diagnostics at the middle of the time-interval (instead of
1260      at the end).
1261    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
1262      new test for AIM with thSIce + slab-ocean
1263    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
1264    o move state variable diagnostics to the beginning of the time step ;
1265      (note: still needs some work specially for snap-shot diagnostics)
1266      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
1267    
1268    checkpoint57c_post
1269    o Change testing option (-ieee) to get closer agreement between g77 & ifort
1270    o generate new output.txt files on faulks with g77 & the new -ieee option
1271    checkpoint57c_pre
1272    
1273    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
1274      update output.txt of exp. global_ocean.90x40x15
1275    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
1276      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
1277    o add saltFlux(+File) forcing capability with periodicExternalForcing
1278    o allow to use pkg diagnostics for GM-Redi & ThSIce output
1279    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
1280    o improvements for the MNC output from DIAGNOSTICS:
1281      - correct handling of the unlimitied dimension
1282      - all dims now have associated coordinate variables
1283      - variables located at U, V, and Corner ("Z") points are now written
1284        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
1285        *all* data points are output
1286    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
1287    o added pkg/seaice/seaice_monitor.F
1288    o mdsio_readfield.F can now read files visible only to master MPI process.
1289    o pkg/seaice: some test code for ice-modified ocean stress
1290    o exf_getffields interpolation defaults to bilinear for all scalar forcing
1291      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
1292      spurious negative numbers for precipitation and humidity.  Will cause
1293      some small numerical differences for integrations using pkg/exf/exf_interp.F.
1294    o pkg/ctrl/
1295      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
1296        May be enabled via doPackDiag
1297      *  introduce z-scaling of
1298         + gradient (doZscalePack) and
1299         + control (doZscaleUnpack)
1300    o pkg/mdsio/
1301      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
1302      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
1303    
1304    checkpoint57b_post
1305    o simplify options in diagnostics_fill arguments (remove weird combinations)
1306    o fix MNC coordinate variables so that they now contain per-face index
1307      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
1308      general, EXCH2 grids are only aligned to a "local" coordinate system
1309    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
1310    o Implement instantaneous output within pkg diagnostics:
1311      setting a negative frequency in data.diagnostics produces
1312     "snap-shot" output (as opposed to time-average if freq > 0)
1313    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
1314      NOTE: change ptracer diagnostics name: use 2 characters to work with
1315            more than 9 tracers. Add also diagnostics of advect & diffus flux.
1316    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
1317      becomes the coordinate variable for the 'T' dimension
1318    o add CF-style coordinate variables to MNC
1319      - just a first cut:  numbers are meaningless on the cubesphere and
1320        missing along the T axis but otherwise it works!
1321    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
1322    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
1323    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
1324      this is based directly on what the model compute, so that the content of
1325      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
1326    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
1327    o clean up build options files for SunOS, in particular
1328      - remove -traditional from xmakedepend
1329      - change -xarch=v9 to -xarch=native for f77
1330      - restore use of make (not gmake)
1331      - add CC=gcc if using g77
1332    o changes per discussion of AM, JMC, & EH3 today:
1333      - move redundant "grid" variables out of "state" -- in preparation of
1334        creating proper CF-style coordinate variables and in recognition
1335        that any/all grid variables can be easily copied (eg. w/NCO) from
1336        the grid files into any of the other NetCDF files
1337      - *always* output grid variables with MDSIO (this will eventually be
1338        changed)
1339      - output MNC grid file if useMNC is true
1340    o every instance of _END_MASTER() has been found and replaced with
1341      _END_MASTER( myThid ) in order to satisfy certain picky Sun
1342      preprocessors
1343    o re-arrange diagnostics pkg initialisation:
1344     - allow each package to extend the available diagnostics list
1345     - add some checking and fix small problems (multi-threaded, ...)
1346     - new S/R diagnostics_fill (replace fill_diagnostics):
1347       look through the short list of active diag. (instead of the long list)
1348       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
1349    
1350    checkpoint57a_post
1351    o this set of changes restores TAMC compatibility
1352      tested for global_ocean.90x40x15 adjoint on trough
1353      (what a pain)
1354    
1355    checkpoint57a_pre
1356    o some modifs in tools/build_options for sunos
1357    o call ctrl_pack for ctrl at end for optimcycle=0
1358    
1359    checkpoint57
1360    o add horizontal bi-harmonic viscosity for vertical velocity
1361      - new parameter viscA4W (defaults to viscA4)
1362      - affects only non-hydrostatic code
1363      - to be done: no-slip lateral boundary conditions
1364    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
1365    o implement Implicit Vertical advection for pTracers
1366    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
1367      (implemented also for implicit vertical diffusion & advection)
1368    o OBCS: extend application of tracer open boundary conditions
1369      to a strip beyond the boundary of width Olx/Oly
1370    o add call monitor to TAF set of required calls (flow directives)
1371      and include in natl_box_adjoint
1372    o untangle a few ifdefs related to cost, ctrl, autodiff
1373      untangel a few ALLOW_ECCO_OPTIMIZATION
1374    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
1375      (theta2, salt2 in ecco_cost_weights)
1376    
1377    checkpoint56c_post
1378    o OBCS as control variables
1379      - update ctrl_ad_diff.list, obcs_ad_diff.list
1380      - remove balance of obcs controls from default
1381      - fix index bug nobcs in ctrl_init
1382      - fix dummy fields filen in ctrl_pack
1383      - add dummy weights for obcs
1384    o lsopt: comment out fort.94 output
1385    o optim:
1386      - remove unnecessary header files
1387      - adjusted namelists
1388      - add xerbla.F to Makefile
1389    o exf:
1390      - multiple modifications of exf_check_range
1391      - unit change in exf_init_runoff from [m/year] to [m/s]
1392    o mdsio:
1393      - i/o-vector change debugLevel from debLevA to debLevB
1394    
1395    checkpoint56b_post
1396    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
1397      is called from DO_THE_MODEL_IO
1398      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
1399      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
1400      - clean up PTRACERS_WRITE_TIMEAVE a little
1401    o add another verification experiment that tests both the cfc-pkg and
1402      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
1403      reactive tendencies treated inline with regular timestepping
1404    o testreport previously did a lousy job of comparing small numbers, so
1405      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
1406      implemented in the little c-progam tmp_cmpnum.c which is embedded in
1407      testreport.
1408    o ptracers_monitor: bug fix for MPI
1409    
1410    checkpoint56a_post
1411    o GCHEM: finish reorganizating the package
1412      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
1413        (introduces another 3D-array for each passive tracer, but only if
1414        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
1415        gchemTendency is not needed because the timestep is done separately)
1416      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
1417      - GCHEM is now---more or less cleanly---separate from PTRACERS
1418      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
1419        so clear to me how that should be done in a general way.
1420    o CFC: improve formatting of output in CFC_ATMOS
1421    o PTRACERS:
1422      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
1423        that ALL experiments with ptracers enable can be checked. This makes
1424        GCHEM_MONITOR obsolete.
1425      - include a runtime parameter PTRACERS_monitorFreq that defaults to
1426        monitorFreq
1427      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
1428    o add PTRACERS (PTR0[1-5]) to testreport output
1429    o exf_check_range:
1430      * default changed to .TRUE.
1431      * will check values for niter0 if debLevA, every timestep if debLevB
1432      * STOP in exf_check_range if 'out of range'
1433      * range chosen generous to allow for potential extema
1434      TBD: a version with stricter range
1435           permitted range would be runtime parameters
1436    o GMredi:
1437      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
1438      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
1439      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
1440    o GCHEM:
1441      - move call to GCHEM_FORCING_SEP, so that it is now called before
1442        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
1443      - introduced a useGCHEM runtime flag and applied it everywhere.
1444      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
1445        this flag is now only visible within GCHEM-pkg routines.
1446      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
1447        be replaced by a 3D array that is computed before thermodynamics; for
1448        this, the tracer ID iTracer had to be included into the parameter list
1449        of ptracers_forcing
1450      - set up forward_step to call gchem_forcing, that will replace
1451        gchem_forcing_int in ptracers_forcing
1452      - cleaning up
1453    o small cleaning of exch2: remove files that are also in eesupp/src
1454    
1455    checkpoint56
1456    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
1457    o mnc: cleanup "full" files--fixes out-of-memory problem
1458    o ECCO-GODAE
1459      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
1460      * fully merged and updated from SIO code
1461        windstress sign change affects
1462        - exf_inscal_[u/v]stress
1463        - sign of xx_tau[u/v] adjustments
1464        - signs in cost_scat
1465      * ctrl_get_gen: avoid update of tau[u/v] for first few days
1466      * natl_box_adjoint updated and compressed
1467      * 2-level checkpoint switch added
1468        (tested in EXP. 1 of natl_box_adjoint)
1469      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
1470    o SVD
1471      * first complete, non-hacked version for SVD calculations
1472      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
1473        performed via direct access files admtlm_vector.it????
1474        (via ctrl_[un]pack)
1475      * optimcycle is used for ARPACK iteration counter
1476        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
1477      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
1478        and add linear transforms where necessary
1479      * controls are initial/final SST, SSS (can be extended; need to check
1480        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
1481    o mdsio: filename info to both stderr, stdout
1482    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
1483      from sign change
1484    
1485    checkpoint55j_post
1486    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
1487      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1488    o add consistent build directories and .cvsignore files to verification
1489    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
1490    o make all subroutines 30 or less characters in length for certain older
1491      compilers to work (a thorough search only turns up two routines in
1492      pkg/ptracers)
1493    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
1494      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1495    
1496    checkpoint55i_post
1497    o change arrays for total vertical diffusivity (2.D if explicit,
1498      3.D if implicit) ; each ptracer uses its own background value.
1499    o added mnc/NetCDF output capability to ocn_compon_interf
1500      - added bits to verification/cpl_aim+ocn so that it can run on
1501        ITRDA and other clusters without the mpirun "-wd" option
1502    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
1503      configuration
1504    o give MNC the ability to create additional files rather than
1505      exceeding a specified file size limit "MNC_MAX_FILESIZE"
1506      - the default is just less than 2GB which is a practical limit
1507        on many systems
1508    o Compute the non-local term using either KPP vertical diffusivity (=default)
1509       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
1510    
1511    checkpoint55h_post
1512    o add verification test "vermix"
1513    o remove all the *_ioinc flags and replace with the single global
1514      outputTypesInclusive flag
1515    o allow to set a vertical profile of vertical diffusivity for T & S
1516    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
1517    o useMNC moved from data.mnc to data.pkg
1518    
1519    checkpoint55g_post
1520    o Renaming carbon AD experiments to comply with testreport conventions
1521    o Updating adjoint of Held-Suarez hs94.1x64x5
1522    o Fixing directives for non-ECCO forward_step, after ECCO directives
1523      have been fixed to avoid recomp. of do_oceanic_phys
1524      Works well for global_ocean.90x40x15,
1525      but recomp. issue remains for carbon
1526    o Updating adjoint output for natl_box_adjoint after
1527      pkg/ecco has been modified (see taga c55d_post)
1528    
1529    checkpoint55f_post
1530    o rename to timeave_init_fixed
1531    
1532    checkpoint55e_post
1533    o some delicate re-shuffle of store directives to avoid one
1534      extra call of do_oceanic_physics
1535      affects ecco_the_main_loop.F, do_oceanic_physics.F
1536      checkpoint_lev1_directives.h
1537    o NB: this may break global_ocean adjoint temporarily,
1538      but it is clear how to fix it. Will do later, need this now.
1539    
1540    checkpoint55d_post
1541    o ECCO specific cost function terms (up-to-date with 1x1 runs)
1542    o ecco_cost_weights is modified to 1x1 runs
1543    o modifs to allow observations to be read in as
1544      single file or yearly files
1545    o enable to read exf forcing fields as either
1546      single file or yearly files (flag useExfYearlyFields)
1547    checkpoint55d_pre
1548    
1549    o switch between 2-level and 3-level checkpointing
1550    o add ability of MNC to write local and "partial" (eg. 2D slices where
1551      the full 3D field is never actually stored) arrays to NetCDF files
1552      with the correct (that is, the complete multi-dimensional) set of
1553      array indicies
1554      - used in mom_vecinv() to write the diagFreq output
1555      - tested (demonstrated) in verification/aim.5l_cs
1556    o further mnc-ification
1557      - add verification/lab_sea to the list with mnc setups
1558      - fix undefined mnc v-names in cd_code
1559      - add kpp to mnc output (both snapshot and timeave)
1560    o non-hydrostatic code
1561      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
1562        in calc_gw.F
1563      - defaults to viscAh
1564      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
1565        friction or Leith) in non-hydrostatic mode, as long as there is
1566        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
1567    o pkg/cost
1568      extend simple cost functions to treat time mean quantities
1569      (T,U,V) via cost_accumulate_state from cost_tile
1570    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
1571        be 2 times larger than the minimum size the advection scheme requires.
1572        now get a perfect conservation of salt in advect_cs test-exp (updated)
1573    o GGL90 (Gaspar's TKE mixed layer)
1574      - add horizontal diffusion of TKE, requires exchanges in
1575        do_fields_blocking_exchanges, horizontal diffusivity is zero by
1576        default. In OPA there is no horizontal diffusion of TKE but the
1577        mixing coefficients are computed from a horizontal average of TKE of
1578        6 points or so. I think that diffusion has a little more physical
1579        justification.
1580      - clean up ggl90_calc in the hope of reducing memory usage (this hope
1581        was in vain)
1582      - mask tke-variable in ggl90_init
1583    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
1584    o fix biharmonic diffusion on CS-grid.
1585    o more obcs stuff
1586      - added obcs_external_fields_load as an alternative to the EXF-pkg option
1587        for reading boundary values. This routine is called from
1588        obcs_prescribe_read
1589      - updated obcs_check
1590      - changed sponge layer relaxation parameter units for days to seconds
1591      - turned off sponge layer by default
1592      - changed argument list of OBCS_CALC to myTime+deltaTclock
1593      - fixed about 35 bugs in obcs_external_fields_load
1594    
1595    checkpoint55c_post
1596    o obcs stuff
1597      - new runtime flags useOBCSprescribe, useOBCSbalance
1598      - re-arranged obcs_calc
1599      - moved exf_getobcs to obcs_prescibe_read
1600        obcs_prescibe_read is called after ORLANSKI stuff
1601        and independent of it (executable can contain all).
1602      - updated obcs_check
1603      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
1604        These may be necessary only if tangential velocities are
1605        prescribed at OB, not sure, needs testing.
1606    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
1607      which simplifies the calls and passes the ifc check-bounds test
1608    
1609    checkpoint55b_post
1610    o add a 2D scalar, Z location, exchange_2 routine.
1611    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
1612      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
1613      affects advect_cs results (for the wrong reason): update output.txt
1614    o use a more standard discretization for biharmonic viscosity ;
1615     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
1616      affects results of dome set-up: update output.txt
1617    o fix gad_advection.F (CubedSphere part), back to version 1.23
1618    o fix bug in mom_vi_del2uv.F (CubedSphere part).
1619    
1620    checkpoint55a_post
1621    o merged code to
1622      * prescribe/read time-dependent open boundaries
1623        (works in conjunction with exf, cal)
1624      * sponge layer code for open boundaries
1625      * each boundary N/S/E/W now has its own CPP option
1626        (healthy for the adjoint)
1627    
1628    checkpoint55
1629    o up-to-date adjoint of previous breaks
1630      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
1631      - global_ocean_ebm: adjoint still needs fix (TLM ok)
1632      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
1633      - carbon: * remove tr1-related adjoint verification
1634                * add ptracer as control variable
1635    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
1636      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
1637    
1638    checkpoint54f_post
1639    o in verification/carbin/ remove experiment related to
1640      ALLOW_PASSIVE_TRACER (array tr1 etc)
1641      code_ad/ input_ad/ results_ad
1642    
1643    o add two new packages
1644      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
1645        + subject to optimization (memory)
1646      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
1647        + subject to reordering (many GOTOs in the original code)
1648        + so far opps is called for every (i,j) point, and then operates in
1649          the vertical; one may want to reorder the scheme in order operate in
1650          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
1651          fields)
1652    o overhaul of IO so that we now have flags for MDSIO and/or MNC
1653      - all verification tests compile and run with linux_ia32_g77
1654      - defaults are compatible with current input files--nothing
1655        should change if you were not previously using MNC
1656      - MNC output has been added in numerous places (eg. timeave)
1657        but there are still a few writes not yet do-able with MNC
1658        (this is in progress)
1659      - flags now allow for either/or/both use of MDSIO and MNC and
1660        documentation will soon follow
1661      - numerous small formatting cleanups for ProTeX
1662    o add version info (via BUILD_INFO.h) to MNC and stdout
1663    
1664    checkpoint54e_post
1665    o add two new packages
1666      - pp81 (Packanowski and Philander, 1981), Richardson number and
1667        stratification dependent mixing
1668      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
1669      - these scheme operate in a similar manner as KPP (without ghat, of
1670        course), however there is only one diffusivity that is used for both
1671        temperature and salinity (and passive tracers)ç
1672    o add offline package
1673    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
1674      provided by Stephanie Dutkiewicz
1675    o genmake2: add ability to search for C compilers and cleanup test output
1676      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
1677    
1678    checkpoint54d_post
1679    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
1680    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
1681      leading to additional shift by 5 days each year of integration
1682       (i.e. leading to considerable offset over the years)
1683    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
1684    o start with no AB and no initial filtering (staggerTimeStep):
1685      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
1686    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
1687      (external loading & cpl import/export stay in forward_step.F)
1688    o update coupling interface to work with new staggerTimeStep
1689    o change MDSIO ptracers_pickup.
1690    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
1691    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
1692    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
1693    
1694    checkpoint54c_post
1695    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
1696      this affects (truncation error) output.txt of test-exp:
1697       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
1698    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
1699    o change Qnet to always be the net heat flux, (+upward).
1700      affects (truncation error) output of natl_box exp.: updated
1701    o define the max number of passive tracers in PTRACERS_SIZE.h
1702    o start to test mnc routinely in exp0
1703    o add sea-ice loading (sIceLoad) as a new forcing field.
1704    
1705    checkpoint54b_post
1706    o add testreport "-j JOBS" option for parallel builds (tested and pretty
1707       impressive on Altix and Opteron systems)
1708    o diagnostics can now write NetCDF files through the mnc package
1709    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
1710    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
1711    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
1712      affects (truncation error) output of lab_sea & natl_box exp.: updated
1713    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
1714    
1715    checkpoint54a_post
1716    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
1717    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
1718    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
1719    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
1720      + internal_wave (shift in writing cg2d_ini_res)
1721    checkpoint54a_pre
1722    
1723    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
1724      - modified verification/lab_sea and natl_box_adjoint accordingly
1725    
1726    checkpoint54
1727    checkpoint53g_post
1728    o prepare splitting of thermodynamics: store convect.counter in common block
1729    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
1730      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
1731    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
1732    o new parameter "nShapS": allow to treat differently S from T (nShapT)
1733    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
1734    o restore adjointability
1735    
1736    checkpoint53f_post
1737    o modifications that affect AIM experiment results (update output.txt):
1738      - no advection of S at top interface Nr (pkg/generic_advdiff)
1739      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
1740    o AIM pkg:
1741      - include stability function into surf.Flux derivative relative to Tsurf
1742      - calculate clear-sky radiation & surface temp. change (for diagnostics)
1743    
1744    checkpoint53e_post
1745    o merged cylindrical coord configuration
1746    o added rotating_tank experiment
1747    checkpoint53e_pre
1748    
1749    checkpoint53d_post
1750    o faulks upgraded: re-generate output.txt that have changed:
1751       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
1752    o Added Bryan and Lewis, 1979, vertical diffusivity profile
1753    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
1754    o added Sadourny discretization of Coriolis
1755      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
1756      - re-enabled use of omega3 (useAbsVorticity)
1757    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
1758      vector-invariant equations
1759      - note: does *NOT* yet use same variable visc. for no-slip BC's.
1760    o recoded the lateral boundary conditions for non-hydrostatic w, this time
1761      hopefully without new bugs
1762      - still to do: biharmonic friction for non-hydrostatic w
1763    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
1764    o regenerated output for global_ocean_ebm (using -ieee)
1765    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
1766      of mom_common/
1767      - simple re-arrangement of instructions within computing loop
1768    checkpoint53d_pre
1769    
1770    checkpoint53c_post
1771    o new version of coupler for AIM+thSIce and Ocean models
1772     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
1773     - land: change Evaporation of snow
1774     - aim with thSIce: fix bug in snow-precip.
1775    o changes to calc_gw.F
1776     - bug fix for w^2 term near the bottom boundary
1777     - (hopefully) improve the lateral slip boundary condtions for use with
1778        partial/looped cells
1779      - because the bug fix changes two verification experiments anyway (exp5
1780        and plume on slope), change the lateral boundary condition from half slip
1781        to the value of no_slip_sides
1782    o ebm package wasnt quite up to the parallel task. Fixed that.
1783    o Adjoint of EBM package + verification
1784      * TLM OK
1785      * ADM not sufficient accuracy yet (needs further testing)
1786    
1787    checkpoint53b_post
1788    o Commiting new energy balance model to repository
1789      * package is pkg/ebm
1790      * verif. is verification/global_ocean_ebm
1791      * references are in ebm_driver.F
1792    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1793    C        Global thermohaline circulation. Part I:
1794    C        Sensitivity to atmospheric moisture transport.
1795    C        J. Climate 12(1), 71-82
1796    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1797    C        Global thermohaline circulation. Part II:
1798    C        Sensitivity with interactive transport.
1799    C        J. Climate 12(1), 83-91
1800    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
1801    C        Destabilization of the thermohaline circulation
1802    C        by atmospheric eddy transports.
1803    C        J. Climate 7(12), 1870-1882
1804    o Will need long integration testing.
1805    checkpoint53b_pre
1806    
1807    o created pkg/mom_common in preparation for variable viscosity code
1808    o renamed and split ini_mnc_io
1809    o pkg/land: only liquid water can diffuse or run-off
1810    o AIM using land: soil wetness availability account for snow
1811    o added printMapIncludesZeros to EEPARMS namelist
1812    
1813    checkpoint53a_post
1814    o restore TAMC compatiility for exf_constants.h
1815      (no usage of _d in .h)
1816    o Additional storing in KPP in an attempt to fix
1817      TAMC problem with adjoint of KPP code.
1818      (no success...)
1819      Identical code works fine with TAF.
1820    o Fixed verification/natl_box_adjoint experiments.
1821      Initial conditions for Experiments 4 and 5 are now
1822      set to "SEAICE_initialHEFF=0", which is more reasonable,
1823      and hence gives results closer to that of Experiment 2.
1824      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
1825    
1826    checkpoint53
1827    o stable checkpoint with up to date adjoint
1828      TLM tests only run for 1st grdchk at the moment. Its unclear if
1829      this is a code problem or a problem with resetting code for g_
1830      variables that is being autogenerated wrong.
1831      Otherwise:
1832       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
1833       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
1834         are both still in chaos following their security messes.
1835    
1836    checkpoint52n_post
1837    o various build (mostly genmake2) changes including:
1838      - ability to build/run more easily within Cygwin and MacOS X
1839      - more complicated Makefiles with a stronger dependence on Gnu Make
1840    o pkg/seaice modifications
1841      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
1842        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
1843        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
1844      - changed proxy for geostrophic velocity and updated
1845        verification/lab_sea/results/* accordingly
1846      - removed ADI dynamic solver from pkg/seaice
1847      - replaced all occurrences of 1/CSTICE or 1/CSUICE
1848        they caused a segmentation fault under certain circumstances
1849      - removed unused field WATR
1850    o bug fix in exf-package:
1851      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
1852         now reflect that.
1853    o small fixes in the cal-package:
1854      - set reference date to first of January for the 'model'-calendar
1855      - failing of cal_CheckDate in cal_FullDate now actually results in a
1856        warning
1857    o small modifications in exf-package to increase flexibility:
1858      - change climtempfreeze from a constant to a runtime parameter that
1859        is specified in data.exf_clim (default = -1.9)
1860      - introduce runtime parameter windstressmax (default = 2.0) that is
1861        specified in data.exf
1862    o fix in pkg/thsice:
1863      - update Evap (Tsf changes) to be consistent with Latent heat flux
1864      - maintain snow precipitation unchanged (even if Tsf >=0).
1865     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
1866    
1867    checkpoint52m_post
1868    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
1869      this does not change any of the results, because myIter=0 in swfrac always
1870      lead to jwtype=2 (the default anyway), but the call makes little sense
1871      as a default
1872    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
1873    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
1874      atmospheric model (AIM) to use it ; add a "slab ocean" component.
1875    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
1876    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
1877    o extending useSingleCpuIO option to work with new exch2 I/O format
1878      - old-style, missing-tile I/O is still accessible by defining CPP
1879        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
1880    o monitor package can write to NetCDF files and/or STDOUT
1881    o fix re-definition bug in MNC_GRID_INIT_ALL()
1882    o doc/api_reference added
1883      - a framework for building an API Reference Manual using all
1884        the "protex" comments embedded in the code
1885      - see pkg/generic_advdiff, pkg/mnc for examples
1886    o MNC:
1887      - make myThid the last argument for all subroutines
1888      - new default for the grid files: NO halos
1889      - add useMNC and other run-time flags
1890      - separate per-file-group handling of the unlimited dimension
1891      - early initialization of MNC w/ flags read at the eeboot stage
1892        and lookup tables set in initialize_fixed
1893      - write all MNC output to a freshly-created directory
1894    o thermodynamics sea-ice (thsice) is now tested with testreport.
1895    o test exp. advect_cs: use the standard cs32 grid ; update output.
1896    o Added functionality to grdchk:
1897      pick global i,j,k position (or nearest wet) where to perform check.
1898    
1899    checkpoint52l_post
1900    o new land formulation:
1901      a) use ground enthalpy as prognostic variable to ensure exact
1902         energy conservation.
1903      b) account for water temperature and for latent heat of freezing
1904         in all processes (rain, run-off, ground storage)
1905      c) compute surface and ground temperature implicitly.
1906    o aim_v23 modification for new land model:
1907      a) Treat separately land / ocean / sea-ice surface fluxes
1908         to allow implicit computation of land & sea-ice surface temp.
1909      b) add snow precipitation.
1910    checkpoint52l_pre
1911    
1912    o fix problem (when 1 tile is empty) in min/max monitor.
1913    o fix bug in timeAve (u,vZetatave in common block)
1914    o no restoring terms under ice for pkg/seaice
1915    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
1916    o bug fix for pkg/seaice pickups
1917    o change MNC call locations and add coordinate attributes
1918    o mask vorticity at the corner ; affects global_ocean.cs output
1919    o fix ini_curvilinear_grid ; test CS experiments with mpi
1920    o aim.5l_cs: modify sea-ice fraction input file ; update output
1921    o exf: Adding simple range check routine for exf fields after read
1922    
1923    checkpoint52k_post
1924    o removed top-level directory "diags"
1925      - we migrated these functions to pkg/timeave a long time ago
1926    o fixed bug introduced in pkg/monitor
1927    o accuracy ctrlprec = 32 insuffient for gradient checks using
1928      averaged fields (I/O via cost_averages)
1929      -> use ctrl.h in active_file*.F to control I/O precision.
1930    o paramter list of CALL ADTHE_MAIN_LOOP
1931    o added initial do_the_model_io to ecco
1932    o set all ...Freq to zero after cost_final
1933      taveFreq, dumpFreq, pChkptFreq
1934    o MAIN and ECCO differentiability restored
1935    
1936    checkpoint52j_post
1937    o fix nchklev in tamc.h for global_ocean...
1938    o Bringing flow and store directives up-to-date
1939    o Really weird thing!
1940      call do_the_model_io from the_main_loop with parameters
1941      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
1942      TAF places a faulty re-call of initialise_varia
1943      after cost_final call which should not be there!
1944    checkpoint52j_pre
1945    
1946    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
1947      error messages
1948    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
1949    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
1950      debug output
1951    o modfied mdsio_writefield.F to handle non-global files under exch2
1952    o update AIM Cubed-Sphere exp (aim.5l_cs):
1953      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
1954    o update AIM Equatorial Channel exp:
1955      use standard aim_v23 pkg and change the SST fields to be more realistic.
1956    o globalFile now works with exch2
1957    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
1958      mon_vort3.F to make exch2 friendly with >1 tile per cube face
1959    o limit timeave output for hi-res integrations
1960    
1961    checkpoint52i_post
1962    o removed CPP_EEOPTIONS.h from verification/*/code
1963    o updated the tiling for global_ocean_pressure
1964    checkpoint52i_pre
1965    
1966    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
1967      the old pkg/aim).
1968    
1969    checkpoint52h_pre
1970    o shortened offending lines in exch2_send_rx?.template
1971    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
1972    o genmake2: add build & execute test for NetCDF code
1973    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
1974      old grid files, moved CPP_EEMACROS.h to pkg/exch2
1975    o added useSingleCPUIO flag to monitor.F and mon_out.F
1976    o added temporary hack for sea-ice dynamics on the cube:
1977      metric terms are ignored and it is assumed that
1978      there is no sea-ice on cube faces 1, 2, 4, and 5.
1979    
1980    checkpoint52f_post
1981    o added exch2 cube routines to pkg/exch2
1982    o modified hs94.cs-32x32x5 to use it
1983    o added new grid files to hs94.cs-32x32x5
1984    checkpoint52f_pre
1985    
1986    checkpoint52e_post
1987    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
1988      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
1989    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
1990      to work with implicit vertical advection and AB ;
1991    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
1992    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
1993     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
1994    checkpoint52e_pre
1995    
1996    o fix bug in impldiff when Nr=1 or Nr=2.
1997    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
1998    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
1999    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
2000      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
2001    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
2002    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
2003    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
2004    
2005    checkpoint52d_post
2006    o re-tiled many expts to allow comparison in multi-processor mode
2007      - updated output accordingly
2008      - changed hs94.128x64x5 to use intial T from file rather than use the
2009        random number generator
2010    o add infrastructure in model routines for fizhi and gridalt packages
2011    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
2012    o changes to permit hi-res, cubed-sphere, configuration
2013      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
2014      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
2015      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
2016        of surface winds for the cube
2017      (A verification experiment, based on global_ocean.cs32x15, but with
2018       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
2019       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
2020       complete with example surface forcing files and matlab scripts to look
2021       at the output and compare it with that of global_ocean.cs32x15.)
2022    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
2023       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
2024       to conform to the common rule.
2025    o check-in the first version of the coupler + interfaces for multi-components
2026       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
2027       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
2028       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
2029       - ocean and atmos. share the same horizontal grid (no interpolation).
2030       - exchanges between component and coupler is done in forward_step
2031    o new verification experiment, cpl_aim+ocn:
2032       coupled ocean - AIM atmosphere on cs32 grid.
2033    
2034    checkpoint52d_pre
2035    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
2036    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
2037    
2038    checkpoint52c_post
2039    o Fixing OPTIONS files for use of exf:
2040      - ALLOW_ECCO not needed
2041      - ECCO_CPPOPTIONS.h should not be included from
2042        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
2043        as has been the case in the past
2044      - All cal/exf related options are currently set in
2045        single header file. Should remain so until we
2046        agree on a consistent new policy.
2047    o Removed all CPP options for cal package.
2048      cal has no more CPP options.
2049    o modified STOREs in GAD_ADVECTION
2050    o corrected key comp. for passkey
2051    
2052    checkpoint52b_post
2053    o new version: "thsice" of thermodynamic sea-ice pkg:
2054     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
2055     - modify fluxes but do not change theta directly;
2056     - light cleaning of bulk_force pkg (still needed with thsice).
2057     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
2058       + output_thsice.txt to test thsice & bulk_force pkgs.
2059    o put back grid & coriolis monitor output.
2060    checkpoint52b_pre
2061    
2062    o call "do_the_model_io" at the beginning (=> dump initial state)
2063    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
2064    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
2065      (need info on NUMBER_OF_PTRACERS)
2066    o missing PTRACERS headers in some routines
2067    o default tamc.h in pkg/autodiff supposed to crash
2068      to ensure proper customization
2069    
2070    checkpoint52a_post
2071    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
2072      - moved surfaceTendencyTice from pkg/seaice to main code
2073      - subroutine FREEZE_SURFACE now limits only surface temperature
2074        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
2075        => new output.txt for global_ocean.cs32x15 & global_with_exf
2076      - keep the old version of FREEZE for backward compatibility;
2077        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
2078      - corresponding modifs for TAF directives
2079    o added surface flux output variables to TIMEAVE_STATVARS
2080    o time-averaged output for pkg/ptracers
2081    o fix problem with ECCO-related divided adjoint
2082      snapshot file was missing some ad-variables,
2083      but no warning issued by TAF
2084    
2085    checkpoint52a_pre
2086    o some bug fixes for #undef REAL4_IS_SLOW
2087    
2088    checkpoint52 = ecco_c52_e35
2089    o after testing adjoints of checkpoint51u_post
2090    
2091    checkpoint51u_post
2092    o this is the post-merge tag of the ecco-branch
2093      (needs another clean checkout and re-testing)
2094    o various natl_box_adjoint configs and results
2095      but no input fields
2096    o obcs adjoint not yet merged!
2097    o adding ECCO global 1x1 and 2x2 degree configs
2098    o updated/extended some store directives for seaice
2099    o pkg/ecco now containes ecco-specific part of cost function
2100    o top level routines the_main_loop, forward_step
2101      supersede those in model/src/
2102      previous input data.cost now in data.ecco
2103      (new namelist ecco_cost_nml)
2104    o in ctrl/ cleaned some cross-dependencies and updated CPP options
2105    
2106    checkpoint51t_post
2107    o this is the pre-merge tag of the ecco-branch
2108    
2109    checkpoint51s_post
2110    o cleanup: removed various obsolete #define-s
2111    o pkg/grdchk
2112      - renamed 'ph-grd 3' to 'grad-res'
2113      - merged from ecco-branch
2114        (remaining bug fixes for obcs gradient checks)
2115      - additional high-precision output for testreport
2116        (grep for 'precision_grdchk_result')
2117    
2118    checkpoint51r_post
2119    o cleaned up or removed CPP_OPTIONS.h files
2120    o updated results for some of the tests to reflect the new
2121      optfiles (-ieee: -O0 instead of -O3)
2122    
2123    checkpoint51q_post
2124    o cd_code:
2125      - moved cd_scheme.F -> cd_code_scheme.F
2126      - separate read_checkpoint from cd_code_ini_vars.F
2127      - separated cd_code part from write_checkpoint
2128      - updated AD_SOURCE, generated .flow
2129      - added CD_CODE_VARS.h to the_main_loop
2130      - Moving cd_code specific store dir.s to pkg/cd_code
2131    o ctrl package totally restructured
2132      - pack/unpack now optional and decoupled from
2133        xx_/adxx_ I/O
2134      - ctrl_pack/unpack cleaned
2135        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
2136      - confined inclusion of AD_CONFIG.h to where necessary.
2137    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
2138    
2139    checkpoint51p_post
2140    o create initial cd_code package
2141      - WARNING: the initialization of fields within packages
2142        is broken because INI_FIELDS (where READ_CHECKPOINT is
2143        called) is called *before* PACKAGES_INIT_VARIABLES.
2144        This seems to be backwards since
2145        1) its important to initially zero the entire field including
2146           the "halo" region
2147        2) zeroing needs to be done *before* reading pickup info
2148           and the pickup call might or might not happen in any
2149           particular run
2150      - this needs an overhaul for R2
2151    o cleanup verification/*/code/GMREDI_OPTIONS.h
2152    o cleanup testreport
2153    
2154    checkpoint51o_post
2155    o bringing AD-related verif's up to date with genmake2
2156      - carbon/
2157      - global_ocean.90x40x15/
2158      - hs.94.1x64x5/
2159      - (front_relax/ )
2160    o (more) consistent directory structure for AD-related verif.'s
2161    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
2162    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
2163    o bug fix in find_alpha.F for MDJWF:
2164      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
2165        change rho -> rho-rhoConst
2166      - replace call find_rho to find_rhonum
2167    o initialisation of rFlx extended to full array (required by TAF)
2168      and shifted to thermodynamics
2169    o removed PTRACERS.h in ptracers routine
2170    o added surfacetendencyPtr to S/R parameter list pracers_forcing
2171    o Correcting initialisations for fVerU, fVerV.
2172    o helping TAF to recognize dependency on kUp for
2173      fVerU, fVerV
2174    o Replacing delZ by delR in pkg/ctrl/
2175    checkpoint51o_pre
2176    
2177    o undid all of cp51 pending some cleanups and discussion
2178    o added the [#include "AD_CONFIG.h"] statement to all files that need
2179       it for adjoint/tl #defines
2180     o re-worked the build logic in genmake2 to support AD_CONFIG.h
2181     o removed tools/genmake since it no longer works
2182    
2183    checkpoint51n_post
2184    o modifications to make FREEZE flux visible to pkg/kpp
2185      - moved surfaceTendencyTice from pkg/seaice to main code
2186      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
2187      - subroutine FREEZE now limits only surface temperature
2188        (this means new output.txt for global_ocean.90x40x15,
2189         global_ocean.cs32x15, and global_with_exf)
2190    o added surface flux output variables to TIMEAVE_STATVARS
2191    
2192    checkpoint51n_pre
2193    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
2194    o added [#include "AD_CONFIG.h"] to all files that use the following
2195      defines:
2196      - ALLOW_ADJOINT_RUN
2197      - ALLOW_TANGENTLINEAR_RUN
2198      - ALLOW_ECCO_OPTIMIZATION
2199    
2200    checkpoint51m_post
2201    o incorporating changes to get TAMC/TAF working in genmake2
2202      - added new TAMC/TAF targets to the Makefile
2203      - various cleanups related to package handling
2204      - these changes should have no impact on the forward model
2205    
2206    checkpoint51l_post
2207    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
2208     - faster algorithm for cal_addtime.F
2209     - higher precision arithmetic, where needed
2210     - pkg/exf *startdate variables changed from calendar date to
2211       model integration time
2212    
2213    checkpoint51l_pre
2214    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
2215    o enable to apply restoring on S & T only in a latitude band.
2216    o update output (external_forcing_surf modif. change truncation errors)
2217       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
2218    
2219    checkpoint51k_post
2220    o change default to: useNHMTerms=.FALSE.
2221     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
2222       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
2223     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
2224        exp1, ideal_2D_oce
2225     - change data file of oceanic exp (leave the results unchanged for now)
2226       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
2227    o set gravitySign automatically according to the vertical coordinate used
2228      (and change sign: back to "logical" value: +1 when R increases downward)
2229    o added an include barrier to the default CPP_OPTIONS.h and
2230      removed the #include "PACKAGES_CONFIG.h" from it
2231    o fix a bug in mom_fluxform (from chk51j_post)
2232    
2233    checkpoint51j_post
2234    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
2235    o adjusted some flow directives (dynamics, thermodynamics)
2236    o added cubed-sphere case to test cost function
2237    o heckpoint_lev?_directives.h now include
2238      pkg-specific directives, whenever those are enabled.
2239    o Moving pkg-specific flow directives to corresponding pkg
2240      Moving pkg-specific differentiation list to corresponding pkg
2241      Moving pkg-specific checkpoint-lev storing to corresponding pkg
2242      ---> conventions are
2243           - pkg_ad.flow
2244           - pkg_ad_diff.list
2245           - pkg_ad_check_lev?_dir.h
2246    
2247    checkpoint51i_post
2248    o merge of the branch-genmake2
2249      - knowingly breaks the older genmake
2250      - automatic generation of all ALLOW_${PKG_NAME} defines
2251      - new testreport supersedes older testscript
2252    o large number of package inclusion and header cleanups
2253    checkpoint51i_pre
2254    
2255    o new output for adjoin of global ocean vector invariant
2256    o fix for checkpoint of thermodynamic seaice and bulk_force
2257    o Steph gchem various cleanups
2258    
2259    checkpoint 51h_pre
2260    o fixed some single quotes
2261    o modify gchem pkg to be more versatile
2262    o modifications to clean up dic pkg
2263    o add pkg/cfc
2264    
2265    checkpoint51g_post
2266    o provide links for ARPACK and ADM*TLM
2267    o start removing verification/vero/
2268    o update AD-related stuff
2269      (in particular some IF-statements in model/src/ routines)
2270    o adding to verification/global_ocean.90x40x15/ adjoint of
2271      vector invariant setup
2272    
2273    checkpoint51f_post
2274    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
2275    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
2276      of tracer Green's fucntions for ocean inversion project.
2277    
2278    checkpoint51f_pre
2279    o Added on-the-fly spatial interpolation capability
2280        "USE_EXF_INTERPOLATION" to pkg/exf.
2281      - This is a temporary Cartesian-grid hack until
2282        the super-duper ESMF coupler becomes available.
2283      - See verification/global_with_exf/README for usage example.
2284      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
2285        flags and modified pkg/seaice accordingly.
2286    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
2287        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
2288        non-local transport term.
2289    
2290    checkpoint51e_post
2291    o pkg/mom_vecinv:
2292      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
2293      - add time-ave diagnostic of vorticity advection.
2294    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
2295    o atmospheric geopotential: - include water vapor effect;
2296                                - use p^kappa in p* scaling.
2297    o land pkg: read initial state from files.
2298    o AIM : add stratospheric drag in the upper level
2299    
2300    checkpoint51d_post
2301    o change function ILNBLNK (=> last non-blank char.) to return zero
2302      (instead of the string length) when the string. char is empty
2303    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
2304    o modif's to restore TAMC compatibility
2305      - avoid "_d" constructs in PARAMETER declarations
2306      - avoid interrupting lines by comment lines
2307    o Use cluster local disks for purely local I/O
2308      vs. globally visible disks needed for ctrl stuff
2309      (merged from ecco-branch)
2310      - new active_file_loc... and mdsio_..._loc routines
2311      - affected packages: autodiff, ctrl, grdchk, mdsio
2312    
2313    checkpoint51c_post
2314    o introducing integer flag debugLevel
2315      - debLevZero: suppress all output
2316      - debLevA: standard
2317      - debLevB: equivalent to current debugMode=.TRUE.
2318    o introducing pathname variable mdsioLocalDir for mdsio
2319      that can be specified at runtime
2320      (relevant for cluster I/O to local disk)
2321    `
2322    >>>checkpoint51b_post
2323    adjoint of ptracers
2324    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
2325    o extended state in checkpoint_lev?, etc.
2326    o alternative ctrl/cost with tr1 or ptracer
2327    o new comlev1_bibj_ptracers
2328    o new ptracers.flow
2329    o made ptracers_forcing same as external_forcing_s
2330    o added verification for adjoint with ptracers
2331      - adm. grdchk fail so far
2332      - tlm. grdchk OK
2333      - checked tapelev/comlev recomputations: OK
2334    <<<checkpoint51b_pre
2335    
2336    checkpoint51a_post
2337    o added code for biogeochemistry package
2338      - new pkgs: dic, gchem
2339      - new subroutine in ptracers
2340    o modify code for biogeo packages
2341      - in model/src and pkg/ptracers
2342    
2343    checkpoint51
2344    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
2345      - autodiff, ctrl, exf, grdchk, seaice
2346      kept separate packages
2347      - cost, ecco, obcs
2348    o updating verification/internal_wave, verification/lab_sea
2349      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
2350    
2351    checkpoint50i_post
2352    o Preparing next differentiable checkpoint and sync
2353      of MAIN vs. ecco-branch
2354      - 1st step: this one is differentiable
2355      - 2nd step: next(! not this) checkpoint will have updated packages
2356                  from ecco-branch)
2357    
2358    checkpoint50h_post
2359    o new package "land": provide surface BC for AIM.
2360    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
2361    o AIM: use true log-P extrapolation for near surface temp (= as in
2362        F.Molteni paper) ; update aim.5l_cs output.
2363    o New variable in PARM03 for more flexible pickups
2364    o somewhat cleaned package initialisation sequence for
2365      ctrl/ cost/ ecco/ in packages_... routines
2366    
2367    checkpoint50g_post
2368    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
2369      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
2370      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
2371        made the default because of faster convergence than ADI
2372    
2373    checkpoint50f_post
2374    o exf totally restructured
2375      - replaced all exf_set_ routines by one generic exf_set_gen.F
2376        and made sure it's still differentiable
2377      - split exf_getffields.F into new exf_bulkformulae.F
2378      - exf_inscal_/exf_outscal_ suffixes consistent with field names
2379      - updated adjoint/makefile and relevant verif. accordingly
2380    
2381    checkpoint50f_pre
2382     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
2383          + change Evap over land. (update aim.5l_cs output)
2384     o added missing .cvsignores and made uniform across expts
2385     o changed configuration of tidal_basin_2d expt
2386     o added pkg/debug functions for tracing code in fatal crashes
2387     o tidied pkg/monitor to use MONITOR_OPTIONS.h
2388     o new fn in pkg/monitor to stop model if solution grows too big
2389     o removed lots of single quotes from comments
2390    
2391    checkpoint50e_post
2392    o make KPP work with PTRACERS
2393     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
2394       nearly a copy of kpp_transport_s
2395     - there is no analogue to SurfaceTendencyS, so I have to use
2396       gPtr(of the surface layer) instead
2397    o add a new platform SunFire+mpi (SunFire 15000) to genmake
2398    checkpoint50e_pre
2399    
2400    checkpoint50d_post
2401    o change kpp output from multiple-record state files to single-record state
2402      files analogous to write_state.F
2403    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
2404      analogous to the cg2d-related output.
2405    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
2406      so that writing to internal file fn (with length 512) fails.
2407    checkpoint50d_pre
2408    
2409    checkpoint50c_post
2410    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
2411    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
2412    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
2413    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
2414    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
2415    
2416    checkpoint50c_pre
2417    Merging from release1_p13:
2418    o bug fix for pkg/seaice dynamic solver
2419    o Added SEAICE_initialHEFF to pkg/seaice
2420    
2421    checkpoint50b_post
2422    o store u*,v* in gU,V instead of in guNm1,gvNm1
2423    o in order to put the momForcing out of the Adams-Bashforth:
2424      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
2425      to timestep.F
2426    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
2427    o re-generate output for highly sensitive test-exp:
2428       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
2429    
2430    checkpoint50b_pre
2431    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
2432    o corrected CPP option mismatch in exf_Bulk... functions for case
2433      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
2434    
2435    checkpoint50a_post
2436    o Bug fix for merging between c50 and KPP.
2437      ikey was passed from thermodynamics to kpp_calc via
2438      common block rather than being recomputed in kpp_calc,
2439      in contradiction with new key itdkey.
2440      New key ikppkey created, and tamc.h headers updated.
2441    
2442    checkpoint50
2443    - 2nd step of merge with ecco-branch:
2444      merge changes in ecco-branch back into main trunk
2445    - bug fix in find_alpha
2446    - more storing in gmredi_calc_tensor.F, kpp_routines.F
2447    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
2448    - merged some sliced AD support routines
2449    
2450    checkpoint49
2451    merged from ecco-branch:
2452    o exf:
2453      - Enable initialisation of forcing fields to constant
2454        (runtime) values.
2455      - in exf_getffields.F
2456        Reduce i-/j-loop to interior domain, discarding overlaps.
2457        That also fixes wrong TAF-key computations for key_1, key_2
2458        with bulf formulae.
2459      - exf_init.F modify #ifdef for exf_init_evap
2460      - exf_getffieldrec.F, ctrl_getrec.F
2461        The following INT-usages are not safe:
2462          fldsecs  = int(fldsecs/fldperiod)*fldperiod
2463          fldcount = int(fldsecs/fldperiod) + 1
2464        and were modified.
2465    o autodiff: checkpoint_lev...
2466      - updated storing for bulk formulae (some arrays were missing)
2467      - added state for seaice package
2468      - synchronized with main branch
2469    o DIVA:
2470      Modif.s in
2471      - the_main_loop.F
2472      - the_model_main.F
2473      and added cost_final_restore.F cost_final_store.F
2474      o With these changes, it is possible to fully separate
2475        the first forward run to compute the cost function (mdthe_main_loop)
2476        and adjoint runs over individual DIVA intervals (adthe_main_loop)
2477        into separate model executions.
2478        This enables better tuning of DIVA to given queue sizes.
2479      o Loss of cost function value in consecutive DIVA runs is
2480        fixed by storing to 'costfinal' file.
2481      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
2482        beginning/end of adjoint integration is accounted for.
2483      The current changes apply to TAF-1.4.26.
2484      TAF has one remaining bug, requiring one manual change
2485      (see MITgcm manual).
2486    o cal: synchronized between MAIN and ecco-branch
2487    
2488    checkpoint48i_post
2489    o Changes to restore differentiability of code w.r.t. previous tag
2490      (mostly adding new routines to make list and replacing
2491      pressure by totPhiHyd).
2492    o Updated and merged grdchk package
2493      - has both ADM and TLM checks
2494      - works for single- and multi-proc.
2495      - output cleaned
2496      - worked successfully for parallel DIVA
2497    o genmake:
2498      - Adding -platform=SP4
2499      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
2500    o Modif. for DIVA:
2501      ctrl_unpack should not be called in intermediate DIVA interval.
2502      (similar thing would apply for active files such as
2503      tbar, sbar, psbar, which should not be reinitialised;
2504      only relevant for ecco-branch)
2505    
2506    checkpoint48h_post
2507    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
2508    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
2509    o Added SEAICE_initialHEFF to pkg/seaice
2510    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
2511    
2512    checkpoint48g_post
2513    --- EOS:
2514    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
2515      store total Potential in totPhyHyd for diagnostics & EOS.
2516    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
2517    --- Pressure/geopotential gradient:
2518    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
2519    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
2520      ( changes results of global_ocean_pressure )
2521    o NLFS + z-coord.: add eta*Rho' contribution.
2522    o accurate phiHyd when using interface-W at the middle between 2 centers
2523     ( changes results of ideal_2D_oce )
2524    o includes r* 2nd term in potential gradient.
2525    
2526    checkpoint48f_post
2527    Merging from release1_p12:
2528    o Modifications for using pkg/exf with pkg/seaice
2529      - improved description of the various forcing configurations
2530      - added basic radiation bulk formulae to pkg/exf
2531      - units/sign fix for evap computation in exf_getffields.F
2532      - updated verification/global_with_exf/results/output.txt
2533    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
2534      (SBO) core products, including oceanic mass, center-of-mass,
2535      angular, and bottom pressure (see pkg/sbo/README.sbo).
2536    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
2537      to avoid negative values in shallow regions.
2538      - updated verification/natl_box/results/output.txt
2539      - updated verification/lab_sea/results/output.txt
2540    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
2541    o Added useSingleCpuIO option (see PARAMS.h).
2542    o Updated useSingleCpuIO option in mdsio_writefield.F to
2543      work with multi-field files, e.g., for single-file pickup.
2544    o pkg/seaice:
2545      - bug fix in growth.F: QNET for no shortwave case
2546      - added HeffFile for specifying initial sea-ice thickness
2547      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
2548    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
2549      kpp_transport_t.F, forward_step.F, and the_main_loop.F
2550    o pkg/seaice:
2551      - adjoint-friendly modifications
2552      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
2553    
2554    checkpoint48e_post
2555    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
2556    o dynamics: change definition of computational domain & adapt mom_fluxform
2557      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
2558    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
2559        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
2560        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
2561        global_ocean.90x40x15 global_with_exf global_ocean_pressure
2562        inverted_barometer solid-body.cs-32x32x1
2563      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
2564    
2565    checkpoint48d_post
2566    o in preparation for r*:
2567     a) use pre-computed gradient of hydrostatic potential:
2568        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
2569     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
2570        => affects results of glob_oce_pressure (different truncation error)  
2571      update output.txt of ideal_2D_oce & global_ocean_pressure
2572    
2573    checkpoint48d_pre
2574    o in preparation for r*:
2575      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
2576      pass the 2 comp. of the grad. as arguments to momentum S/R.
2577      but for the moment, only used if it does not change the results.
2578    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
2579    
2580    checkpoint48c_post
2581    Modifications in treatment of initial flux forcing controls
2582    to avoid extra storing of flux fields.
2583    
2584    checkpoint48c_pre
2585    o Added tidal_basin_2d experiment (currently 1D!)
2586    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
2587    
2588    checkpoint48b_post
2589    o r* coordinate added in #ifdef NONLIN_FRSURF block.
2590     (modification to pressure gradient not yet implemented)
2591    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
2592      (for U & V) that are used for vertical advection of momentum.
2593    
2594    checkpoint48a_post
2595    o In preparation for r*, use temp. array to compute vertical transport
2596       in flux-form momentum pkg. => change results of few test-exp.
2597      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
2598                        lab_sea, natl_box & plume_on_slope
2599    
2600    checkpoint48
2601    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
2602    
2603    checkpoint47j_post
2604    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
2605    o moved adexch from forward_step to addummy_in_stepping
2606    o added exch in ctrl_map_...
2607    o aveFreq.=0. at end of cost_final to avoid overwrite in
2608      reverse checkpointing loop
2609    o Yet more changes in gmredi:
2610      * adgmredi_calc_tensor
2611        avoiding all recomputation of gmredi_slope_limit
2612      * adgmredi_x/y/rtransport
2613        added flag for excessive storing to avoid recomp. of
2614        u/v/rtans, dTdx/y/z
2615        -> this is not really necessary and very memory-consuming
2616      * adgmredi_slope_psi:
2617        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
2618      * gmredi_slope_limit
2619        re-activated full calculation of taperfct for case 'ac02'
2620    o updating verification/ adjoints of carbon, global_ocean.90x40x15
2621    
2622    checkpoint47i_post
2623    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
2624    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
2625      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
2626    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
2627    o gmredi: fix few bugs.
2628    
2629    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
2630    This will be a good checkpoint to plug into the ecco-branch.
2631    o few modif.'s to get latest version adjointed
2632      (mainly kick out code in ini_linear_phisurf)
2633    o modif's to run adjoint with exactConserv
2634    o case GM_BOLUS_ADVEC should be cleaned
2635      S/R gmredi_slope_psi should be cleaned
2636    o verification/carbon now has exactConserv=.TRUE.
2637    
2638    checkpoint47g_post
2639    o time-average AIM output: becomes independent from statvars time-average
2640      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
2641    o After TAF bug fix:
2642      Tested adjoint of gmredi package.
2643      Tests were done with checkpoint47 rather than with latest
2644      checkpoint47f_post since the latter is broken for the adjoint
2645      verification/carbon/ contains both ADM and TLM gradient checks.
2646    Here they are, before they get changed/lost/stolen.
2647    Mostly modif.'s to fix numerical sensitivities.
2648    Gradient checks OK for
2649    - GM_taper_scheme:
2650      * clipping
2651      * ac02
2652      * linear
2653      * glw91
2654      * dm95
2655      * ldd97
2656    - GMREDI_OPTIONS:
2657      * GM_VISBECK_VARIABLE_K
2658      * GM_NON_UNITY_DIAGONAL
2659      * GM_EXTRA_DIAGONAL
2660      * GM_BOLUS_ADVEC
2661    in conjunction with data.gmredi parameters to be checked in
2662    in a few minutes under verification/carbon/code/
2663    
2664    checkpoint47f_post
2665    Merging from release1_p10:
2666    o modifications for using pkg/exf with pkg/seaice
2667      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
2668        and SEAICE_EXTERNAL_FLUXES
2669      - pkg/exf CPP options EXF_READ_EVAP and
2670        EXF_NO_BULK_COMPUTATIONS
2671      - usage examples are Experiments 8 and 9 in
2672        verification/lab_sea/README
2673      - verification/lab_sea default experiment now uses
2674        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
2675    
2676    checkpoint47e_post
2677    o created a tag prior to creating a branch
2678    
2679    checkpoint47d_post
2680    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
2681      at the bottom boundary had an erroneous half slip boundary condition
2682    o added bottom drag and no slip boundary condition capabilities to
2683      oceanic pressure coordinates code
2684    o added new verification experiment global_ocean_pressure, this experiment is
2685      also described in the tutorial section of the manual
2686    checkpoint47d_pre
2687    
2688    checkpoint47c_post
2689    o Added a verification experiment for a global cubed-sphere ocean run
2690      -  verification/global_ocean.cubed32x32x30
2691      -  uses pkg/therm_seaice and pkg/bulk_forcing
2692    
2693    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
2694    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
2695      when using P-coordinate; only implemented for atmospheric config.
2696    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
2697      NOTES: requires option NONLIN_FRSURF to be "#define".
2698    o update advect_xz/results/output.txt (left from checkpoint44g_post)
2699    
2700    checkpoint47b_post
2701    Merging from release1_p9:
2702    o pkg/seaice
2703      - removed GOTO's and added taf directives
2704      - double precision constants to reduce the g77 (Linux)
2705        to F77 (SGI) differences reported in release1_p8
2706    o tools/genmake
2707      - added SGI options
2708    o verification/testscript
2709      - updated to that of checkpoint47a_post
2710    o verification/global_ocean.90x40x15/input/eedata
2711      - modified for SGI f77 compatibility
2712    o verification/lab_sea
2713      - added description of sea-ice model
2714      - added missing matlab routines
2715      - added test of thermodynamics parallelization
2716    
2717    checkpoint47a_post
2718    o new pkg: aim_v23
2719     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
2720       for now, keep the same surface forcing as before.
2721     - Part-Cell implemented into AIM; check that Heat & Water are conserved
2722     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
2723     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
2724    o add diagnostic of surface correction term in monitor output
2725    
2726    o bulk_force and therm_seaice
2727    - Two packages:  bulk_force (Bulk forcing)
2728      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
2729    - Earlier integration from Stephaine Dutkiewicz
2730      and Patrick Heimbach.
2731    - Two ifdef statements for compile time,
2732       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
2733    
2734    checkpoint47
2735    differentiable version of checkpoint46n_post
2736    o bug fix in quasihydrostaticterms
2737    o * "clean" adjoint code (in terms of extensive recomputations)
2738        can now be obtained for all GMREDI options (i.e. for
2739        - GM_VISBECK_VARIABLE_K
2740        - GM_NON_UNITY_DIAGONAL
2741        - GM_EXTRA_DIAGONAL
2742        - GM_BOLUS_ADVEC )
2743      * However, wrong gradient check problem remains unsolved.
2744      * New CPP options have been introduced for different
2745        tapering schemes
2746    o external_fields_load now part of differentiation list
2747    o pressure needs multiple storing;
2748      would be nice to have store_pressure at beginning or
2749      end of forward_step, e.g. by having phiHyd global (5-dim.)
2750      (NB: pressure is needed for certain cases in find_rho,
2751      which is also invoked through convective_adjustment).
2752    o recomputations in find_rho for cases
2753     'JMD95'/'UNESCO' or 'MDJWF' are OK.
2754    o #define ATMOSPHERIC_LOADING should be differentiable
2755    o ini_forcing shifted to begining of initialise_varia
2756    o Incorporating QNVS line search routines into MITgcm
2757      (this is separate code, and therefore not under pkg)
2758      lsopt/, optim/
2759    o Updated verification/carbon/
2760      - #define GM_VISBECK_VARIABLE_K
2761      - GM_taper_scheme    = 'ldd97'    
2762    
2763    checkpoint46n_post
2764    Merging from release1_p8:
2765    o verification/natl_box:
2766      updating new external_fields_load routine
2767    o New package: pkg/seaice
2768      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
2769      The sea-ice code is based on Hibler (1979-1980).
2770      Two sea-ice dynamic solvers, ADI and LSR, are included.
2771      In addition to computing prognostic sea-ice variables and diagnosing
2772      the forcing/external data fields that drive the ocean model,
2773      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
2774      The implied surface heat flux is then stored in variable
2775      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
2776      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
2777      non-local transport term.  Because this call precedes model
2778      thermodynamics, temperature under sea-ice may not be "exactly" at
2779      the freezing point by the time theta is dumped or time-averaged.
2780      N.B.: fairly large differences in accuracy occur across
2781            different platforms/compilers; comparison between
2782            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
2783            generated output gives:
2784       T           S           U           V
2785      C D M    c        m  s        m  s        m  s        m  s
2786      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
2787      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
2788      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
2789    
2790      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
2791    o GAD:
2792      - generated new common blocks to account for call of
2793        same gad routines with differing traceridentities
2794        (needed to modify tracerIdentity indices in GAD.h)
2795      - generated separate common blocks for case useCubedSphereExchange
2796        (Department of Futurology)
2797      - parameter lists to gmredi_?transport: added tracerIdentity
2798      - added new key indices to tamc.h
2799    o external_fields_load:
2800      - added this routine to TAF list
2801      - needed to make some common blocks global and additional storing
2802        along the same lines as exf package (checkpoint_lev?_directives.h)
2803    o exf:
2804      updated external forcing package
2805      - bug fixes carried over from ecco-branch
2806        (missing OBCS_OPTIONS.h in two routines)
2807      - enable easy to use "no forcing".
2808      - added exf I/O for atmospheric loading
2809      - added exf I/O for runoff data
2810      - transfered scaling between exf <-> MITgcm to exf namelist
2811    o Adding new verification experiment global_with_exf.
2812      This verification experiment is almost identical to the
2813      global_ocean.90x40x15 experiment, except that it uses
2814      the exf (and cal) package instead of the
2815      external_fields_load routine (cf README file).
2816    
2817    checkpoint46m_post
2818    o modified testscript to return -- when there are no lines of "%MON" output
2819    o added new flag "quasiHydrostatic" for QH mode
2820      and new routine quasihydrostaticterms()
2821    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
2822      New routine: mom_u_coriolis_nh()
2823    o fixed sign of non-hydrostatic metric terms in u and v equations.
2824      Depend on correct sign of gravitySign.
2825    o added work.pc* to .cvsignore in aim directories using ifc
2826    o introduced flag for controllin non-hydrostatic metric terms
2827    o removed gravitySign from PARM04
2828    o switched to g77/ifc from pgf77 in aim experiments
2829    
2830    checkpoint46l_post
2831    o made convective adjustment work with pressure coordinates:
2832     - changed the direction of k-loop in convective_adjustment.F for the
2833       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
2834     - adjusted the reference pressure k-index in convective_adjustment.F
2835     - adjusted the convection condition in convect.F (in analogy to
2836       calc_ivdc.F)
2837     - convective_adjustment no longer computes anything on the halos
2838     - removed the warnings about negative salinity from find_rho.F and
2839       find_alpha.F; instead the new routine look_for_neg_salinity, called
2840       at the beginning of find_rho, find_alpha, and find_beta, does a
2841       check of the entire slice, if CPP-option
2842       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
2843    checkpoint46l_pre
2844    
2845    checkpoint46k_post
2846    o fixed the verification/global_ocean.90x40x15 experiment:
2847     - new bathymetry (the world according to A., JMC, and M.)
2848     - new initial fields and forcing fields (*.bin files)
2849     - new POLY3.COEFFS (for the next release one should switch to a full
2850       equation of state: JMD95P or MDJWF)
2851     - fixed several errors and redundancies in the data file
2852     - experiment uses looped cells
2853     - added matlab directory with diagnostic scripts for plotting of output
2854    
2855    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
2856     - read AIM physics parameters from a file (data.aimphys)
2857     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
2858    
2859    checkpoint46j_post
2860    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
2861    o move wVel computation at the end of the time step, in S/R integr_continuity
2862    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
2863    o update timeave pkg for wVel diagnostic.
2864    checkpoint46j_pre
2865    
2866    checkpoint46i_post
2867    o Clean up AIM package (and keep the results unchanged):
2868      include CPP_OPTION and use IMPLICT NONE in all routines ;
2869      declare all the variables _RL ; use _d 0 for all numerical constants.
2870      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
2871    
2872    checkpoint46h_post
2873    o cleaned up the use of rhoNil and rhoConst.
2874      - rhoNil should only appear in the LINEAR equation of state, everywhere
2875        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
2876        and the dynamical equations are all divided by rhoConst
2877    o introduced new parameter rhoConstFresh, a reference density of fresh
2878      water, to remove the fresh water flux's dependence on rhoNil. The default
2879      value is 999.8 kg/m^3
2880    o cleanup up external_forcing.F and external_forcing_surf.F
2881      - can now be used by both OCEANIC and OCEANICP
2882    checkpoint46h_pre
2883    
2884     Added code to convert surface volume flux (fresh water) into
2885     a mass flux when using P coordinates in the ocean (OCEANICP).
2886     Note: It assumes you have set rho0=rhoConst=density of fresh water.
2887    
2888    checkpoint46g_post
2889    o Include a new diagnostic variable phiHydLow for the ocean model
2890      - in z-coordinates, it is the bottom pressure anomaly
2891      - in p-coordinates, it is the sea surface elevation
2892      - in both cases, these variable have global drift, reflecting the mass
2893        drift in z-coordinates and the volume drift in p-coordinates
2894      - included time averaging for phiHydLow, be aware of the drift!
2895    o depth-dependent computation of Bo_surf for pressure coordinates
2896      in the ocean (buoyancyRelation='OCEANICP')
2897      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
2898        Theta, Salinity, and Pressure in the parameter list. This routine is
2899        presently contained in find_rho.F. This routine does not give the
2900        correct density for 'POLY3', which would be a z-dependent reference
2901        density.
2902    o cleaned up find_rho
2903      - removed obsolete 'eqn' from the parameter list.
2904    o added two new verification experiments: gop and goz
2905      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
2906    checkpoint46g_pre
2907    
2908    checkpoint46f_post
2909    o Enable tangent linear (forward mode) gradient checks:
2910      - extended active file handling to g_... files
2911      - added TANGENT_SIMULATION to theSimulationMode
2912      - extended grdchk package accordingly
2913    o added tangent linear setup in verification/carbon/code_ftl
2914    o added adjoint setup in verification/front_relax/code_ad
2915    
2916    checkpoint46e_post
2917    o Added new equation of state -> MDJWF
2918      - EOS of McDougall et al., 2002, JAOT, submitted
2919      - caveat: the equation of state is only valid for a smaller (more
2920        realistic?) range of values than JMD95P/Z and UNESCO
2921      - added masks to the calculation of pressure in store_pressure
2922      - added more check values for density in check_eos (ini_eos.F), some of
2923        the old check values are out of the range of the MDJWF-eos, so don't
2924        expect perfect matches for those
2925    checkpoint46e_pre
2926    
2927    checkpoint46d_post
2928    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
2929      'OCEANICP', also initialised field pressure correctly in ini_eos in the
2930      case of pressure coordinates. eosType='JMD95Z' in
2931      combination with buoyancyRelation='OCEANICP' now causes an error.
2932    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
2933      in find_alpha/beta.
2934    checkpoint46d_pre
2935    
2936    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
2937      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
2938    
2939    checkpoint46c_post
2940    o Changes necessary for ocean in p-coordinates
2941     -  Added new buoyancy relation = 'OCEANICP'
2942     -  Added new parameters = gravitySign (this used to be contained inside
2943        the factor dRdZ which I added when we first switched to R coordinates).
2944     X GM/Redi is not compatible (yet)
2945     X bottom drag and no-slip need to be debugged.
2946    checkpoint46c_pre
2947    
2948    checkpoint46b_post
2949    o Added new equation of state -> JMD95Z and JMD95P
2950      - EOS of Jackett and McDougall, 1995, JAOT
2951      - moved all EOS parameters into EOS.h
2952      - new routines ini_eos.F, store_pressure.F
2953    o Added UNESCO EOS, but not recommended because it requires
2954      in-situ temperature (see JMD95)
2955    o Modified formatting for knudsen2.f in utils/knudsen2 and added
2956      unesco.f to be used with POLY3
2957    checkpoint46b_pre
2958    
2959    checkpoint46a_post
2960    o Added (atmospheric) pressure loading
2961      - new field in FFIELDS.h, etc...
2962      - new cpp flag ATMOSPHERIC_LOADING
2963    o Changed hFacC to _hFacC in calc_phi_hyd.F
2964    o Added SHORTWAVE_HEATING to some files for consistency
2965    checkpoint46a_pre
2966    
2967    checkpoint46
2968    further merges from release1_p5
2969    o new ctrl package
2970      - adopted from ECCO environment to enable optimization
2971      - added Eliassen Palm fluxes to controls
2972    o added Eliassen Palm flux controls to gradient check package
2973    o cost package
2974      - Compatible with new ctrl package
2975      - added Eliassen Palm cost hooks
2976      - modif's of existing cost functions
2977    o Adjoint-related bug fixes in kpp:
2978      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
2979      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
2980    o autodiff package
2981      - flow directives:
2982        + new for S/R do_the_model_io
2983        + enhanced for S/R checkpoint
2984        + new gmredi.flow
2985      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
2986        disable adcommon.h/g_common.h by default.
2987      - fixed problem for adjoint of global_max
2988    o modified verification/carbon/
2989    o New setup for adjoint of global_ocean
2990    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
2991    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
2992    o incorporated hooks for sponge layer code (external_forcing.F)
2993    
2994    checkpoint45d_post
2995    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
2996    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
2997      (affects plume_on_slope "cg2d" output)
2998    o add new parameter deltaTfreesurf for free-surface time stepping
2999    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
3000    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
3001    o change phiMin in exp1 (to agree with documentation)
3002    o add new flags:
3003     - T,S forcing inside/outside Adams-Bashforth
3004     - turn off temp,salt advection and/or forcing
3005     - for each tracer, define internal flag for multiDimAdvection & A-B
3006    o monitor: change definition of KE to check conservation of Energy
3007    
3008    checkpoint45c_post
3009    o Removed f90 comments ("!")
3010    o Modified initialisations to enable exf package for MITgcm
3011      (without invoking ECCO_PACKAGE).
3012    o modifications to gradient check package (Martin Losch)
3013      - enable centered differences
3014      - modified format of standard output
3015    
3016    checkpoint45b_post
3017    o cleaned exchange calls in cg2d
3018    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
3019    o included CPP option SINGLE_LAYER_MODE in thermodynamics
3020      to configure barotropic setup (Martin Losch)
3021    o moved some initialisations within bi,bj loop in dynamics
3022      (TAF flow dependency)
3023    o in initialise_varia, moved call packages_init_variables
3024      before convective_adjustment_init
3025      (corresponding adjustment of TAF tape initialisation).
3026    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
3027    
3028    checkpoint45a_post
3029    o compute Rho over the whole domain (extend iMin,jMin indices)
3030    o specific exchange for X-slice domain (case Ny=1)
3031    o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
3032    o solve_for_pressure : set cg2d_x to zero where OBCS are applied
3033    
3034    checkpoint44h_post = checkpoint45
3035    o Fix to restore differentiability:
3036      place at which packages_init_variables is called in
3037      initialise_varia is crucial for reverse control flow.
3038    o modifications in GMRedi to enable stable adjoint
3039      (corresponding modif's in thermodynamics, dynamics)
3040    o added missing hook for sponge layer code in external_forcing
3041    o modified test cost functions
3042    o storing in gad_advection (plus removal of write(0,*)!
3043    o missing headers TR1.h added in convective_adjustment routines
3044    o errorMessageUnit set non-equal zero in eeboot
3045      (conflict on some platforms, e.g. IBM SP3)
3046    o modified carbon verif.
3047    
3048    checkpoint44h_pre
3049    o vertical grid option: allow to put the Interface at the middle between
3050      2 cell-centers ; replace delZ in pkg/kpp by drF.
3051    o GM Advective form: Tracers are advected using the residual transport (=
3052      Euler+GM-bolus); set param GM_AdvSeparate=T to return to previous form.
3053    
3054    checkpoint44g_post
3055    o fix surface correction term in multiDimAdvection (affects plume_on_slope
3056      results) ; ifdef missing in thermodynamics.F
3057    
3058    checkpoint44f_pre,checkpoint44f_post
3059    o added PTRACERS package
3060      This allows an arbitrary number of passive tracers to be integrated
3061      forward simultaneously with the dynamicaly model.
3062      + Implemented so far:
3063        - basic forward algorithm (time-stepping, advection, diffusion, convection)
3064        - I/O and checkpointing
3065        - GM/Redi  *but*  using the GM/Redi coefficient of Salt
3066      + Not implemented so far:
3067        - KPP
3068        - OBCS
3069      + No specific example supplied (yet) but global_ocean.90x40x15 has the
3070        necessary data.ptracer file. Simply use -enable=ptracers and uncomment
3071        line in data.pkg.
3072      + This package is disabled by default since it increases storage.
3073    
3074    
3075    o testscript: added -cleanup option
3076    o Shap_filt: a) new shap_filt S/R to use no-slip BC with S2 filter
3077                 b) enable to filter 2D fields.
3078    
3079    checkpoint44e_pre,post
3080    o re-wrote convective adjustment to use pre-calculated weights
3081      Affects: model/src/convective_adjustment.F, convective_adjustment_ini.F
3082      Adds:    model/src/convective_weights.F, convectively_mixtracer.F
3083      Original calls to convect() still in place.
3084    
3085    chkpt44d_pre,post
3086    o added missing EXCLUDE_MONITOR flags
3087    o changed "e" to "_d" in gmredi_slope_limit, gmredi_slope_psi
3088      (incompatible typ in MIN/MAX expressions caused problems
3089      on IBM SP3)
3090    o in genmake added variable MAKEDEPEND
3091      plus resetting for case SunOS
3092    o added timer_stats.c routine for IBM SP3
3093    o removed variables in dynamics
3094    !!! I forgot to create tag chkpt44d_pre !!!
3095    !!! But chkpt44d_pre = chkpt44c_post    !!!
3096    
3097    o real fresh water flux implemented with non-linear free-surface.
3098    
3099    chkpt44c_pre,post
3100    o few fix (mask in shap_s2, EmPmR in external_field_load,
3101      USE_NATURAL_BCS in solve_for_P);
3102    o add arguments myIter & myTime to S/R obcs_calc & solve_for_P
3103    
3104    checkpoint44b_pre/_post
3105    o merge of relevant stuff from the ecco-branch:
3106      - genmake: removed $S64 overwrite for case SunOS
3107      - pkg/exf: update and corrections for field swapping and obcs
3108      - pkg/ecco: parameter lists for the_model_main, the_main_loop
3109                  harmonized between ECCO and MITgcm
3110      - pkg/autodiff: added flow directives for obcs, mdsio_gl_slice
3111                      updated checkpointing_lev... lists for obcs
3112      - model/src: minor changes in forward_step, plot_field
3113                   added directive for divided adjoint in the_main_loop
3114      - pkg/mdsio: added mdsio_gl_slice
3115    
3116    o check parameters & config (chkpt44a_pre,post)
3117    o OBC and NonLin_FrSurf.
3118    
3119    checkpoint44
3120    o fix bug in mom_vi_del2uv
3121    o select when filters are applied ; add options to zonal_filter (data.zonfilt)
3122    o gmredi: fix Pb in the adiabatic form ; add options (.e.g. Bolus advection)
3123    o update AIM experiments (NCEP input files)
3124    o improve and extend diagnostics (Monitor, TimeAve with NonLin-FrSurf)
3125    o added some stuff for AD
3126    
3127    checkpoint43
3128    o added two new advection tests
3129    o added global 4x4 degree ocean test
3130    o added test of H&S94 with free surface on cube
3131    o some final mods for gradient check, adjoint,...
3132    
3133    checkpoint42
3134      Fixed AD-related problems:
3135    o Store directives up-to-date with re-arranged Adams-Bashforth
3136      (mainly thermodynamics.F)
3137    o New store directives for multi-dim. advection schemes
3138      * new CPP flag ALLOW_MULTI_DIM_ADVECTION
3139      * new common block and key passkey
3140      (mainly gad_advection.F)
3141    o Modified store directives for split of dynamics/thermodynamics
3142      for the case ALLOW_KPP
3143    o Cleaned argument list for timestep_tracer.F
3144    
3145    checkpoint41
3146    o re-formatted/added comments in prologues of key subroutines
3147      to work with protex
3148    
3149    checkpoint40
3150    o moved calc_gs, calc_gt and calc_tr1 back to model/src
3151    o added FLT (floats) package from Arne along with demo. experiment
3152    o re-arranged Adams-Bashforth scheme for tracers to allow easier
3153      implementation of forward-in-time forcing terms
3154    o more mods for non-linear free-surface including new variable
3155    o modified multi-dim method to work on cube
3156    o bug fix in KPP (from DM)
3157    
3158    checkpoint40pre9
3159    o added DST advection schemes
3160    o fix MPI bug on SGI's
3161    o modifications for non-linear free-surface
3162    o fixed conditionals for fixed flow/passive tracer only mode
3163    o added tension/strain form of stress tensor
3164    o changes to commenting of arguments for TAF/TAMC
3165    o added/updated many matlab scripts
3166    o added multi-dimensional advection method for tracers
3167      
3168    checkpoint40pre8
3169    o new package rw/
3170      Added method for dumping intermediate local arrays:
3171      mdsio_writetile - same as mdsio_writefield except works from inside
3172                        bi,bj loop
3173      mdsio_writelocal - same as mdsio_writetile except works for local
3174                         arrays
3175      write_local_r? - higher-level wrapper for mdsio_writelocal
3176      Controlled by diagFreq. Defaults to zero (ie. no dumps)
3177      Example given at end of mom_vecinv.F that dumps some local arrays.
3178    o replaced calc_mom_rhs.F by mom_fluxform.F/mom_vecinc.F to
3179      control flux-form versus vector invariant code.
3180      Switch is runtime flag vectorInvariantMomentum (defaults to false)
3181      or genmake -DISABLE ...
3182    o TAMC-related update to cope with mom_fluxform.F/mom_vecinc.F
3183      (additional storing is now needed for case vecinv;
3184      currently nothing implemented to switch this storing off
3185      in case fluxform is used since no CPP flag available).
3186    
3187    checkpoint40pre7
3188    o bug fix in dynamics.F
3189      calc_viscosity called before k=1,Nr loop.
3190    o added some #ifdef's ALLOW_PASSIVE_TRACER
3191    o cleaned initialisations in ctrl_map_ini
3192      related to TAF
3193    
3194    checkpoint40pre6
3195    o split dynamics into thermodynamics & dynamics
3196    o corresponding split of calc_diffusivity into
3197      calc_diffusivity, calc_viscosity
3198      (kpp_calc_diff, kpp_calc_visc).
3199    o Added diffkr, kapgm to control variables
3200    o bug fix in gmredi_slope_limit for ldd97
3201    
3202    checkpoint40pre5
3203    o proper initialization of Adams-Bashforth time stepping
3204      + uses forward step for very first step of model (iter=0)
3205    o re-generated *all* output since almost all output is modified by this
3206      change (sorry but we've been putting this one off for about 2 years)
3207      + natl_box, aim.5l_Equatorial_Channel and aim.5l_zon-ave were
3208        *not* regenerated since they are already out of date and I don't
3209        want to create the impression that they are suddenly working.
3210    o removed KAP stuff for DEC's
3211    o modified/added many .cvsignore files in */code and */input
3212    o added new expt "solid-body.cs-32x32x1"
3213      + this uses an alternative form of ini_curvilinear_grid.F which
3214        is not necessarily any better than the current one...
3215    
3216    checkpoint40pre4
3217    o added re-initialisations of utrans,vtrans,rtrans in
3218      calc_common_factors which are crucial for TAF.
3219    o extended iMin,jMin range for calc_common_factors,
3220      calc_diffusivity
3221    o added option ALLOW_PASSIVE_TRACER
3222    o a few minor updates and fixes
3223    
3224    checkpoint40pre3
3225    o created calc_gtr1.F for gad package
3226    o split the_main_loop and re-introduced forward_step
3227    o some recomputations of nIter0 for TAMC
3228    
3229    checkpoint40pre2
3230    o Updated to latest branch of AJA, JMC
3231    o Added gradient check package
3232    o Added routines for passive tracer handling
3233    o Added carbon sequestration sensitivity experiment
3234    
3235    checkpoint39
3236     o Modifications and fixes to support TAMC
3237       (mainly missing or wrong directives)
3238     o Corrected common blocks when fooling TAMC to produce adjoint I/O
3239       in addummy_in_stepping
3240     o Updated verification/vero/ (bug fixes in code/, correct pickups in input/)
3241     o Enabled "sliced" (xz-,yz-) exchanges, needed for obcs.
3242     o Included following packages:
3243       cal: calendar
3244       exf: external forcing
3245       ecco: essential routines to control use of cal, exf
3246             (NB: this is not the full ECCO environment)
3247     o disabled some packages by default in genmake
3248    
3249    checkpoint38
3250     o see notes_c37_adj.txt
3251     o corrected wrong layer index in external_forcing_t
3252     o replaced the_main_loop/forward_step by the_main_loop
3253     o removed forceoutput from write_state
3254       (replaced criteria for initial/final state)
3255     o added runtime flag for pre-C35 pickups: usePickupBeforeC35
3256    
3257    checkpoint37
3258     o mdsio.F routine split and packaged in pkg/mdsio
3259       (mdsio.F and mdsio_gl.F still exist in eesupp/src but are not
3260        used unless genmake -disable=mdsio)
3261     o allow a more precise surface-geopotential gradient for the atmosphere
3262       taking into account the change in space of Alpha (=1/rho) at the surface.
3263     o variable "etaN" (replace cg2d_x) is the surface R-anomaly [r unit]
3264       (ocean: sea surface height [m] / atmos: surface pressure anomaly [Pa])
3265     o Change units: Phi_Hydrostatic (=phiHyd), Phi_Surface(=cg2d_x) and
3266       Phi_NonHydrostatic (=cg3d_x), all have now the dimension of a potential
3267       [m2/s2] (pressure/rhoConst in the ocean ; Geo-Potential in the atmosphere).
3268     o Time-Average diagnostics defined as a pseudo package "timeave".
3269     o pickup files : old pickup (before c35) did not work with new code (c35
3270       and after) unless activating 2 commented lines in initialise-varia.
3271     o Non-Hydrostatic pickup file Pb fixed.
3272     o bug with Rigid-lid version (since c35) fixed.  
3273    
3274    checkpoint36
3275     o implement Crank-Nickelson barotropic time-stepping
3276     o recover Time-Average diagnostics
3277     o fix Pb in checkpoint (PR#19)
3278     o AIM become a standard package ; clean unused CPP_kees
3279    
3280    checkpoint35
3281     o subtantial rewrite of dynamics.f
3282     o allows staggered time-stepping
3283     o packaged obcs, aim (Atmospheric Physics), zonal_filt, shap_filt
3284     o added bottom drag (linear + quadratic)
3285    
3286    checkpoint34
3287     o Modified exchange routines for correct reverse simulation.
3288     o Added verification output to comply with bug fix in impldiff.F
3289       as of c33 (exp2, natl_box).
3290     o Corrected store directives in dynamics.F
3291     o Corrected array boundaries in impldiff.F
3292     o Corrected array dimensions in gmredi.
3293       Added temporary scalars to avoid storage by TAMC (gmredi, kpp).
3294     o Added routine GLOBAL_SUM_INT to global_sum.F
3295     o Added mdsio_gl.F for ECCO purposes.
3296    
3297    checkpoint33
3298     o Fixed bug in lower BC in impldiff.F
3299     o Fixed confusion about units of forcing arrays in FFIELDS.h
3300       namely Fu,Fv,Qnet,Qsw,EmPmR:
3301       - Removed verification/natl_box/code/external_fields_scale.F
3302         (did not differ from that in model/src)
3303       - Changed units of fu,fv,Qnet,Qsw,EmPmR back to proper units
3304         (see FFIELDS.h for description)
3305       - Scale fu,fv,Qnet,Qsw,EmPmR when used in external_forcing_surf.F,
3306         kpp_calc.F and kpp_transport_t.F
3307       - Removed model/src/external_fields_scale.F and calls to it
3308       - verification/natl_box uses flux data with "atmospheric" sign so
3309         a special version of external_fields_load.F is used to
3310         change the data as it's read in. This way, the arrays
3311         have the right units and signs at all times tha a user could
3312         possibly use them.
3313     o Corrected genmake to delete a temporary file during configuration
3314    
3315    checkpoint32
3316     o Scaling of forcing fields moved from external_forcing.F to
3317       external_fields_scale.F, called directly after loading fields.
3318     o Surface relaxation terms added to surface tendency fields in
3319       extra subroutine.
3320     o impldiff.F changed to avoid storing by TAMC of huge intermediate
3321       fields.
3322     o Changes in GMRedi to comply with packaging structure.
3323     o Modifications and bug fixes in KPP package.
3324     o Verification experiment for KPP added (verification/nat_box/)
3325    
3326    checkpoint31
3327     o Packages interface brought in line with defined standard
3328       -> new routines packages_...F
3329       -> changes in initialise_fixed.F, initialise_varia.F
3330       -> enables initialisation interface for ECCO package
3331     o Rescaling of external forcing fields immediately after read
3332       (removed from external_forcing.F)
3333       -> new: surface_fields_scale.F
3334       -> affects ini_foorcing.F, external_fields_load.F
3335     o Computation of surface tendencies before tendency updates.
3336       -> new: external_forcing_surf.F
3337     o Change of variable names useGMRedi, useKPP, useECCO
3338     o Further changes in dynamics.F, impldiff.F for TAMC
3339     o Tested for experiments 0, 2, 4.
3340       - not yet tested for GMRedi.
3341       - not yet tested for KPP.
3342    
3343    checkpoint30
3344     o Updates for OBCs
3345     o New experiment for test OBCs (internal_wave)
3346     o New output.txt in verification/exp4/results/
3347     o Updates for KPP: calculation of viscosity corrected, new variables
3348       kpp_dumpFreq and kpp_taveFreq
3349     o CPP'd calls to system routines for TARGET_CRAY_VECTOR (P.H.)
3350       and entry for T90 in genmake
3351    
3352    checkpoint29
3353     o packaged KPP and GM/Redi
3354    
3355    checkpoint28
3356     o Corrected initialization of hFacMin for difference vertical coordinates
3357     o Modified calculation of partial cell thickness to more robust algorithm
3358     o config_summary.F: replaced write_1D_... by write_0D_...
3359       read_write.F: added subroutines write_0D_...
3360     o routines calc_common_factors, calc_gs, calc_gt, calc_phi_hyd, find_rho:
3361       included some initialisations required for TAMC.
3362     o routine calc_isoslopes: modified sqrt computation to make it
3363       differentiable for zero argument.
3364     o routines dynamics, impldiff:
3365       included store directives and tape key computations required for TAMC.
3366     o ALL TAMC related changes are between ifdef ALLOW_AUTODIFF_TAMC
3367    
3368    checkpoint27
3369     o fixed calc_isoslopes() to so that cancellation of terms in tensor
3370       formulation works properly with variable resolution.
3371     o restructured the calling tree between the_model_main() and dynamics()
3372     o split initialise() into initialise_fixed() and initialise_varia()
3373     o introduced initialization file pSurfInitFile for free surface (cg2d_x)
3374       in new routine ini_psurf()
3375    
3376    checkpoint26
3377     o moved some #ifdef in optional routines to encompass everything
3378       except the argument declarations. This was using up some memory.
3379     o fixed macros like _ADT to work with both versions of Linux cpp
3380     o cleaned up some unused and uninitialized variables
3381       (helps when debugging with strict compile options)
3382     o split up CPP_EEOPTIONS.h into options and macros
3383       (macros are now in eesupp/inc/CPP_EEMACROS.h)
3384     o patch for 2 processor JAM mode
3385    
3386    checkpoint25
3387     o updates for OBCs and NH
3388     o dramatically reduced memory usage
3389     o added "JAM" routines for use on Artic network
3390     o parameterization of convection by implicit vertical diffusion
3391     o added a diagnostic of convective index
3392     o moved call to calc_divg_hat() from dynamics() to solve_for_pressure()
3393       (this is was partly for OBCs and NH but also in anticipation of
3394        an explicit free-surface option)
3395     o initial state input files for U and V
3396    
3397    checkpoint24
3398     o Removed some spurious "REAL"s
3399     o Updated KPP to latest version from JPL
3400     o Added a COS(latitude) in horizontal viscosity
3401    
3402    checkpoint23
3403     o Added del^4 diffusion for salt and temperature
3404     o Multiple minor fixes (implicit none's, arguments to global_sum, etc.)
3405    
3406    checkpoint22
3407     o Made many small changes: implicit none, format(i5), etc...
3408     o Introduced KPP mixing scheme (compiles and runs but *not* tested)
3409    
3410    checkpoint21
3411     o Introduced new I/O package that supports direct-access records (mdsio.F)
3412     o Split-up mid-level I/O routines
3413     o Updated input data for experiments 0,1,2,4 and 5
3414     o Finally removed the genmake.* scripts (everyone seems happy with genmake)
3415    
3416    checkpoint20
3417     o Tidied up open-boundaries some more
3418     o Added non-hydrostatic code
3419     o Fixed some input data
3420     o Modified MPI start-up to work in "coupled" context.
3421    
3422    checkpoint19
3423     o Tidied up directory structure for verification experiments.
3424     o Added new code for open boundaries.
3425     o Corrected advective terms near boundaries.
3426     o Added CPP flag for "old UV" geometry and corrected spherical geometry.
3427     o Implemented free-slip/no-slip BCs and del^4 dissipation.
3428     o Split default parameters out of ini_parms.F into set_defaults.F.
3429    
3430    checkpoint18
3431     o Further changes for optional code generation with
3432       CPP - ugh!
3433    
3434    checkpoint17
3435     o Beginning to incorporating modularity
3436       for supporting atmos. and ocean configs.
3437     o Small changes for TAMC complinace
3438     o New ultra simple test case. Barotropic box
3439       configuration "exp0".
3440    
3441    checkpoint16
3442     o Minor changes to exchange routines to support
3443       accumulation in reverse mode. Adjoint of an
3444       assignment is an addition.
3445     o Changes to support compilation by TAMC (LR(1)
3446       syntax) and by g77 under Linux ( 72 character
3447       limit ).
3448    
3449    checkpoint15
3450     Rewrote exchange routines to allow
3451     o General tile <-> tile connectivity.
3452     o TAMC reverse mode flag ( is this really needed? )
3453     o Variable width overlap and exchange region widths.
3454     o Hooks for sharing data via DMA, Arctic, Memory Channel,
3455       shmput/shmget, VIA, SYSV shmem and every other cool
3456       communication method.
3457    
3458    checkpoint14
3459     Consistent isomorphism chages made. These allow dynamical core
3460     to support both pressure and meters as a vertical coordinate.
3461    
3462    checkpoint13
3463     Release which corrects global_max problem and a couple
3464     of KGM time-averaging diagnostic errors. Also contains
3465     a double-gyre experiment setup as well as the baseline
3466     4 degree global template. The double gyre template is
3467     organised to allow it to be applied automatically to
3468     the baseline configuration.
3469    
3470    branch-point-rdot
3471     A few tidy-ups have been made bt the real point of this
3472     check-point (excuse the pun) is to allow a branch to be
3473     made for the purposes of adding the rDot alterations.
3474     I don't want to commit the rDot to the main-trunk until
3475     we've actually tested it...
3476    
3477    checkpoint12
3478     Tidy up and added generic genmake script (formerly
3479     configure script).
3480     Released to testers.
3481    
3482    checkpoint11
3483     Re-arranged initialise() and introduced ini_vertical_grid()
3484     and ini_masks_etc().
3485    
3486  checkpoint10  checkpoint10
3487   Introduced the configure script.   Introduced the configure script.
3488   Separated out the diags package.   Separated out the diags package.

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