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revision 1.32 by adcroft, Thu Nov 30 16:51:40 2000 UTC revision 1.813 by mlosch, Thu May 10 20:02:36 2007 UTC
# Line 1  Line 1 
1  $Header$  $Header$
2    $Name$
3    
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
8      - change discretisation of evp-solver in order to avoid another exchange
9        (changes lab_sea) and clean up a little
10      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
11        help the adjoint (this also changes the results slightly)
12      - add a few "_d 0" where they had been missing in seaice_evp.F
13      - cleaning up: remove unused seaice_calc_rhs.F
14    o pkg/exf: some cleaning-up:
15      - change various "constants" into runtime parameters
16      - cleaned-up Large&Yeager04 routine which should eventually
17        replace exf_bulkformulae.F (changed names of S/R and CPP)
18        and merged various ALLOW_ATM_WIND options
19     only used with thsice pkg (in thsice_get_exf.F):
20      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
21        which are used when useStabilityFct_overIce=TRUE (= the default)
22      - change default values of ice & snow emissivity and scale downward LW
23        by ice & snow emissivity.
24    o pkg/thsice:
25     fix few little problems, in thsice_calc_thickn.F:
26      - growth vertically (and not laterally) if iceFrac == iceMaskMax
27      - melt laterally only if hIce < hThinIce (as the comments say)
28      and in thsice_extend.F:
29      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
30      - start to form ice as soon as the minimum ice-volume is reachable.
31     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
32      and cpl_aim+ocn
33    o pkg/kpp
34     - move computation of surface related input fields to KPP into a new
35       subroutine kpp_forcing_surf.F
36     - remove wrong (within bi,bj loops) EXCH calls.
37     - little cleaning (add argument myThid in last position, cvs header ...)
38     - for now, fix conservation problem by exchanging KPPviscAz (may not
39       be the best fix)
40    o pkg/seaice
41     - check for inconsistent evp parameter/cpp-flag combination
42     - remove leftover errIO flat for obsolete name list error handling
43    o OpenAD
44     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
45    
46    checkpoint59a
47    o pkg/seaice: some parameter clarifications and a little bit of clean up
48    o pkg/thsice: rename run-time parameters:
49       himin       -> hIceMin
50       himin0      -> hThinIce
51       hihig       -> hThickIce
52       i0          -> i0swFrac
53       transCoef   -> bMeltCoef
54       frac_energy -> fracMelting
55      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
56       with default values (for now) that do not change the results.
57      remove old version of thsice vars advection in pkg/seaice.
58    o in FFIELDS.h:
59      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
60      - make pLoad & sIceLoad always available (but still only used if
61         ATMOSPHERIC_LOADING is #define).
62    o pkg/kpp: replaced _KPP_RL with _RL
63    o bug fixes for vertical diffusivity computations when both KPP and
64        3D diffusivity arrays are used.
65    o pkg/seaice: fix bug in evp solver, while doing that
66      - change (improve?) discretization of stress computations for both
67        cgrid-lsr and evp solver
68      - add a new routine to compute strain rates
69      - the above changes lab_sea results
70      - add no slip conditions for evp solver (off by default), lsr-version
71        may follow
72      - fix exchange for shear at Z-points (does not change lab_sea)
73      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
74        (to force the user to pick a time step since there is not "safe" way
75        of choosing it)
76      - add principal stress diagnostics
77      - rearrange fields for evp a little to avoid having to call a: too many
78        exchanges and b: exchanges for stress trensor components which we do
79        not have.
80      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
81        of evp, complete rewrite for lsr case (latter is does not yet work
82        in all cases)
83    o pkg/kpp: add code to have mixing in shelf ice caverns
84      - add myThid to all kpp routines (long overdue)
85    
86    checkpoint59
87    o pkg/exf:
88      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
89        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
90      - move exf header files from lower_case.h to UPPER_CASE.h ;
91        add missing cvs Header & Name
92      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
93      - add namelist param. selectStressGridPosition, exf_monFreq
94      - retire many _CLIM routines, and remove data.exf_clim
95        + params moved to data.exf
96        + climsst, climsss now handled by exf_set_gen, i.e.
97          climss?period=0 refers to constant field,
98          climss?period=-12 to monthly forcing
99      - split up namelists in data.exf
100    o pkg/seaice:
101      - remove seaice_exch and seaice_exch_uv
102      - remove superfluous exchange of theta
103      - add myThid to seaice_budget_ocean/ice
104      - add new interface for atmospheric wind forcing (C-grid only)
105        + new routine
106        + two new field (taux, tauy for stress over ice)
107        + removed one global field (DAIRN) for C-grid case only
108    o pkg/thsise
109      - 2nd set of modifs for thsice adjoint in conjunction with exf
110    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
111    
112    checkpoint58y_post
113    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
114      vertical diffusivity, similar to that in MOM4; turned on using
115      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
116      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
117    o Added capability for 3D specification of background vertical diffusion
118      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
119      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
120      "data" file that contains the 3D vertical diffusivity coefficients.
121    o ice dynamics (pkg/seaice) with thsice thermodynamics:
122      - add code within pkg thsice to advect & diffuse sea-ice fields
123      similar to (and will replace) what has been added in  seaice_advdiff.F,
124      but: - conserving Mass, Heat & Salt.
125           - better when using non-linear advection scheme (not yet fully tested)
126           - can also be used in atmospheric set-up (for now, only the diffusion).
127    
128    checkpoint58x_post
129    o IO option for global-file compact format:
130      - add options when generating topology (utils/exch2/matlab-topology-generator)
131      - add I/O capability (pkg/mdsio).
132      - adapt utils/matlab/rdmds.m to read this format.
133      for now long-line format not yet supported by pkg/mdsio (& exch2).
134    o shelfice: add a few diagnostics
135    
136    checkpoint58w_post
137    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
138      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
139      (and replace horiVertRatio in NH code).
140      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
141                         and tutorial_plume_on_slope (sensitive to truncation)
142    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
143      directly to drive seaice model (C-grid only)
144    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
145     - reintroduce computation of wind from stress,
146     - compute tau (in exf_bulkformulae.F) from windstress averaged to
147       mass points to avoid tau = 0
148     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
149    o rdmnc.m: make it work with "global" files created with gluemnc
150    o rdmnc.m : some improvements in dealing with singleton dimension
151      (tested on all testreport mnc output files).
152    o genmake2: disable pkg/profiles if netcdf test fails.
153    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
154    o move call to cal_readparms up to make calendar parameters/variable available
155      to all packages
156    
157    checkpoint58v_post
158    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
159      useDynP_inEos_Zc tested.
160    o pkg/exf: changes to properly interpolate/mask/scale initial fields
161    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
162      and portions thereof.  See read_cs.txt for description and examples.
163    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
164      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
165      following the great-circle arc between those 2 points.
166    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
167      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
168    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
169     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
170     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
171     - still needs work (not working with some options ; efficiency to improve)
172       and serious testing.
173     - use this scheme for temperature & salinity in 2 advection test exp.:
174       advect_xy & advect_xz, respectively.
175    
176    checkpoint58u_post
177    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
178    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
179    o testreport: add option "-skipdir" to skip some test.
180    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
181      momentum calculation.
182    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
183    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
184      remove checkpoint.F and the_correction_step.F (no longer used);
185      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
186    o add option (linFSConserveTr) to correct for tracer source/sink due to
187      Linear Free surface
188    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
189    o pkg/thsice: fix reading mnc-pickups
190    
191    checkpoint58t_post
192    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
193    o pkg/mdsio:
194     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
195       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
196       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
197     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
198     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
199       either MDS_READ_FIELD or MDS_WRITE_FIELD )
200     - new S/R (to replace MDSWRITEMETA), which allows to write more
201       informations (variable names, time ...) to meta files.
202     - modify rdmds.m to give back the meta file content.
203    o pkg/diagnostics: change vertical interpolation to be safer, and more
204       flexible (define p-levels to interpolate to in data.diagnostics);
205      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
206       diagnostic pointer.
207    o pkg/seaice: more cleaning up of seaice_growth, added many comments
208    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
209    o fix multi-category seaice:
210     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
211       SEAICE_MULTICATEGORY
212     - fix short wave heat flux
213    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
214       and allow to use EVP solver. Change forward lab_sea: test both EVP
215       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
216    o Initial check-in of lab_sea adjoint
217      (very similar to natl_box_adjoint/code_seaice)
218      * used C-grid and EVP solver
219      * used KPP, GM/Redi
220      * uses inAdExact=.TRUE.
221      * gradient checks fail for both ADM and TLM
222        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
223        f.d. gradients actually seem more problematic than ADM, TLM gradients;
224        issue is related to forward mismatch between g77 an ifort
225    o pkg/seaice: overhaul of thermodynamics
226     - growth.F and groatb.F are replaced by new routine seaice_growth.F
227     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
228     - move a few global fields out of SEAICE.h into seaice_growth.F and
229       make them 2D (FICE/QNETO/ ...)
230     - remove FO (it is the same as QNETO)
231     - introduce a few local fields to avoid modifying external fields such
232       as atemp, etc.
233    
234    checkpoint58s_post
235    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
236      changed exf_set_gen.F so that
237        genperiod=0 means input file is one time-constant field and
238        genperiod=-12 means input file contains 12 monthly means
239    o CG2D: use pre-computed solver main-diagonal (stored in common block);
240      this affects truncation error ; generate new output file for exp. which
241      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
242        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
243        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
244        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
245        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
246        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
247    o start implementation of deep-atmosphere and anelastic formulation
248    o verification: remove 2nd copy of input files and use script "prepare_run"
249      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
250    o mom_common/vecinv/fluxform: fix a few initialisation isssues
251    o profiles: fix for multithreaded case
252    
253    o diagnostics: rename few diags:
254      s/'PRESSURE'/'RCENTER '/g
255      s/'TICE    '/'oceFreez'/g
256      s/'TAUX    '/'oceTAUX '/g
257      s/'TAUY    '/'oceTAUY '/g
258      s/'SWFLUX  '/'oceQsw  '/g
259      s/DIFx/DFxE/g
260      s/DIFy/DFyE/g
261      and add few ocean-forcing diagnostics:
262      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
263    o modifications to pkg/seaice/growth.F and budget.F, which change results of
264      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
265      as actual snow thickness.  It now refers everywhere to effective snow
266      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
267    
268    checkpoint58r_post
269    o modifications to pkg/seaice/growth.F, which change results of
270      lab_sea experiment: fixes pertain to melting snow over open water, to
271      masking EVAP under sea ice, and to using the correct AREA variable for
272      computations of EVAP, PRECIP, HSNOW, and GHEFF
273    o add ability to read bathy, salt, and theta using MNC (off by def)
274    o add flooding algorithm and advection of HSNOW for pkg/seaice;
275      both are turned off by default and do no change any results
276    o seaice advection with pkg/thsice: a step toward the use of non-linear
277      advection scheme, but #ifdef or commented out for now (requires more EXCH).
278    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
279      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
280      in natl_box (affects results @ truncation level: update output.txt)
281    o multi-threading and IO:
282      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
283      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
284        (needed to work with SingleCpuIO): tested in all verif. exp.
285    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
286      affects the results (but none of the verification test uses this scheme).
287    o Adding some pkg/diagnostics capability to pkg/seaice
288      (will certainly be subject to changes)
289    o ctrl: adding new control variables:
290      lwflux, lwdown, evap, snowprecip, apressure, runoff
291    
292    checkpoint58q_post
293    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
294      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
295      high_res_cube configuration by 4% on Columbia.
296    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
297      add (in global_with_exf/code) a version of EXF_INTERP_READ without
298      dynamical allocation (seems to work in multi-threaded).
299    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
300      single CPU io) so that TAF does not have to see EESUPPORT.h
301    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
302    
303    checkpoint58p_post
304    o obcs: stop if obcs is used with useCDscheme = .true.
305    o shelfice:
306     - fix a sign error so that no slip at shelfice interface works
307     - remove stop for combination non-hydrostatic code and shelfice. That does
308       not mean, that the results are correct, but at least they are numerically
309       stable
310    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
311    o added adjoint exch routined for all exch*3d* routines
312      and updated flow directives
313    
314    checkpoint58o_post
315    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
316      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
317    o change controling S/R for writing pickup file (new S/R do_write_pickup)
318      and clean-up reading/writing of pickup files.
319    o fix local version of read/write pickup (NH part) in rotating_tank/code
320    o simplify EXCH interface:
321     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
322     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
323    o added the regrid package
324    o shelfice:
325     - add a simple boundary layer scheme to reduce noise
326     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
327    
328    checkpoint58n_post
329    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
330       local variable (not in common block).
331    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
332      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
333      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
334        to work with SingleCpuIO.
335    o add "_d 0" to real constant of pkg/cfc subroutines ;
336       update exp. cfc_exemple & tutorial_cfc_offline output files.
337    o multi-threading and IO:
338      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
339        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
340      - barrier before and after reading.
341      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
342      - avoid using MDS_WRITELOCAL for LAND pkg output.
343      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
344        common-block variables ; Allows multi-threading with master-thread IO.
345    o change default MAX_NO_THREADS from 32 to 4 ;
346      and stop cleanly when MAX_NO_THREADS is too small.
347    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
348    
349    checkpoint58m_post
350    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
351       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
352    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
353       keep global_ocean.90x40x15 (for AD testing) with former secondary test
354       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
355    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
356        add MITgcm_tutorials (= code + all the tutorials)
357    o ecco, option to compute cost for total ssh (mean+anom)
358    o consistent with addition of ptracer and ssh in pkg/profiles
359    o profiles: adding ptracer and ssh
360    o testreport: change multi-test output-file name
361      (from output.txt.{name} to output.{name}.txt)
362    o profiles: now ok for mutli-tiles case
363    o seaice: add 4 parameters for different advection schemes for area,
364      (effective) seaice thickness, enthalphy, and snow height. Their default
365      is the standard parameter SEAICEadvScheme
366    o calc_gw:
367     - add cosFacU in zonal viscous flux (harmonic.visc.).
368     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
369       of tutorial_plume_on_slope.
370    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
371    o calc_gw: true flux-form, account for horizontal grid spacing.
372      update rotating_tank results, but not plume_on_slope (affected at
373      truncation level, 11 digits).
374    
375    checkpoint58l_post
376    o calc_gw:
377     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
378     - remove side-drag for now (need to fix it); update plume_on_slope results.
379     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
380    o commit code to make SST/SSS weights spatially variable
381      (based on either variable in-situ or variable initial T/S weights)
382    o pkg/ecco:
383      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
384        now based on horizontally varying weights wthetaLev, wsaltLev
385      * cost_averagesflags now returns year indices in addition to day, month
386      * sflux balance is performed on annual basis
387        (sflxumm, sfluxmm2, bal_sfluxmm)
388      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
389        including separate counting and multipliers
390    o pkg/rbcs
391      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
392    
393    checkpoint58k_post
394    o testreport:
395     - always build in dir. "build" (if not there, mkdir build instead of building
396       & running in input)
397     - run in dir run (if it exists), in build otherwise.
398     - call prepare_run (if input/prepare_run exists)
399     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
400    o pkg/exf modifications to interpolation and rotation routines for more
401       reasonable treatment of North Pole singularity: for tracers North Pole
402       value is set to northernmost zonal-mean value, for zonal velocity it is
403       set to zero, and for meridional velocity it is set to northernmost value.
404    o pkg/exf/exf_check_range.F
405     - add tile index to diagnostics and move stop statement to the very
406       end of the routine.
407    o pkg/diagnostics: (diagnostics_main_init.F)
408      define title of isomorphic variables according to the current config.
409    o pkg/thsice with pkg/seaice dynamics:
410    - fix domain of computation (interior only, required for exf) and do exchanges
411    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
412    o towards a standard way of dealing with multi-threading in MONITOR
413      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
414    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
415       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
416    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
417    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
418    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
419       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
420    o tracer advection:
421     - clean-up and simplify calc_common_factors.F
422     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
423       advection subroutine (but still not used within DST advection S/R)
424    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
425    
426    checkpoint58j_post
427    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
428      from file (collects calls previously in FORWARD_STEP)
429    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
430    o adjoint store dir. adjusted accordingly
431    o genmake2
432      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
433    
434    checkpoint58i_post
435    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
436      on wind stress (SEAICEstressFactor defaults to 1.)
437    o Total number of Timers is finite (<=40): comment out 2 non-essential one
438      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
439    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
440      on CS-grid: no longer loosing mass.
441    o exf & curvilinear-grid: no longer modify longitude xC & xG.
442    o pkg/ggl90: fix sloppy output and fix a bug
443    o pkg/seaice: added SEAICEuseEVPpickup parameter
444      - Set to false in order to start EVP solver with
445        non-EVP pickup files when using SEAICEuseEVP
446      - fix sign error in diffusion in seaice_calc_rhs
447    
448    checkpoint58h_post
449    * Modifications for bottom topography control
450      o replace hFacC by _hFacC at various places
451      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
452      o add non-self-adjoint cg2d_nsa
453      o update autodiff support routines
454      o re-initialise hfac after ctrl_depth_ini
455      o works for 5x5 box, doesnt work for global_ocean.90x40x15
456    * Adding verification for 5x5 box (4-layer) bottom topography control
457    
458    checkpoint58g_post
459    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
460       used for mean seasonal cycle, mean diurnal cycle); add an example
461       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
462    o pkg/ggl90:
463      - add parameter (minimum surface kinetic energy)
464      - fix bug (avoiding division by zero)
465    o couple pkg/thsice to pkg/seaice:
466      - modify advection in seaice to accomodate new scalar fields to be advected
467      - only muliDimAdection scheme work with seaice/thsice
468      - mapping of thsice-variables to seaice-variables, back and forth
469      - does not break the verification experiments, but does not give the
470        desired results either
471    o pkg/seaice
472      - make (default) second order advection a bit less confusing?
473    
474    checkpoint58f_post
475    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
476      to pkg/seaice):
477      - new routines thsice_map_exf and thsice_get_exf provide the interface
478      - add an additional formal parameter to thsice_solve4temp
479    o pkg/exf:
480      - add new fields wspeed, snowprecip (to be able to couple to thsice)
481      - correct Stefan-Boltzmann constant
482      - new parameter for longwave surface emittance
483      - separate some stuff from exf_bulkformulae into new routines  
484        exf_radiation, exf_wind
485      - add new parameters and constants: longwave emissivity for ocean, ice
486        and snow, evaporation parameters over ice
487      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
488        either wind from stress or stress from wind
489    o pkg/thSIce:
490    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
491    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
492       and THSICE_CALC_THICKN
493    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
494    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
495      to make debugging easier.
496    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
497    o pkg/bulk_force:
498      - clean-up comments and parameters ;
499      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
500    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
501      generate new output for test-experiment: aim.5l_cs.thSI
502    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
503      testreport accordingly
504    
505    checkpoint58e_post
506    o SEAICE_CGRID adjoint done
507    o R_STAR adjoint implemented.
508      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
509      * need to sort out init. of h0facc, etc.
510    o Make pkg/profile fully independent of ecco,cost, etc. stuff
511      to be able to use it in pure forward.
512    
513    checkpoint58d_post
514    o upgrade simple test-experiment to tutorial example:
515     step.1: duplicate the experiment and (step.2) will remove the old copy.
516      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
517      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
518      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
519      tutorial_global_oce_biogeo    <- copy of dic_example
520      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
521      tutorial_plume_on_slope       <- copy of plume_on_slope
522      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
523      tutorial_global_oce_optim     <- empty for now (David ?)
524      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
525     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
526    o correct a sign problem in cost_scat.F
527    o obcs and ptracers: fix boundary conditions for advections schemes
528      with larger stencil
529    o thsice adjoint: start
530    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
531      completeness
532    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
533      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
534    o ptracers adjoint:
535      * avoid extensive recomputatations
536      * fix missing re-init. of gptr (missed by TAF)
537    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
538      me to turn off the excessive output to STDOUT that this package produces
539    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
540      and add those terms in Vector-Invariant formulation.
541    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
542      if the control period (xx_hfluxperiod etc) is 0
543    o in profiles pkg, clean routines and fix details
544    o in ecco pkg, reading ssh data:
545      fix problem in case the model does not start at iter0=0
546    o fix mnc-pickup/restart for ptracers
547    o new package prifiles:
548      code to compute profile-based cost by Gael Forget
549      (modifs in ecco, ctrl, autodiff)
550    o Benign bug fix in initialization (spotted by M. Mazloff) of
551      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
552    
553    checkpoint58c_post
554    o adjoint: finish NLFS adjoint and provide reference output in
555      verification/global_ocean.90x40x15/results_ad_nlfs
556    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
557      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
558      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
559      with SEAICE_CGRID defined.
560    o move calendarDumps from "data" to "data.cal" and clean-up the code
561      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
562    o add useEXF & useCAL flags (for now, set in hard-coded way)
563    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
564      (were missing in NH mode, and wrong in quasihydrostatic mode).
565      waiting for Chris updated version of calc_gw to add those CALLs.
566    o fix bug in quasihydrostatic S/R ;
567      add a test for this option: global_ocean.90x40x15.qshyd
568    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
569      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
570    o add on/off flag useOffLine for package OFFLINE
571    o seaice:
572      - modify advection so that it works also on the C-grid
573      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
574        problem in multi-tile runs with C-grid
575      - add flags for clipping ice velocities and/or masking solver forcing
576      - fix drag (ocean on ice) formulation and a bug that caused noise in the
577        C-grid solver
578      - added a few comments to seaice_diffusion.F
579      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
580        are now exclusive)
581      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
582        required re-ordering the code a little:
583       + make DAIRN global variable (defined in SEAICE)
584       + move computation of the viscosities eta and zeta into a new separate
585         routine (because I need to recompute them in seaice_ocean_stress.F)
586    
587    checkpoint58b_post
588    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
589      update output.txt of exp. aim.5l_cs.thSI
590    o various mnc cleanups and improvements:
591      + shrink lookup tables by factor of ~4
592      + better error reporting when running out of lookup space
593      + able to handle longer path/file names (up to 500 chars)
594    o adjoint:
595      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
596      - TBD: "hidden" mom_vecinv recomp. in dynamics
597    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
598     (allow to differentiate between forcing components using new integer flags:
599      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
600     and add new flag to put Dissipation tendency out of Adams-Bashforth.
601    o ecco
602      - enable trend removal from SSH anomaly obs.
603    o adjoint
604      - a fix for PmEpR when #undef EXACT_CONSERV
605      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
606      - try to fix "hidden" recomp. in forward_step for NLFS
607        (NLFS seems broken sometimes after I checked it in)
608    o seaice:
609     - add c-grid version of the dynamic solver:
610       + three new routines that are the c-grid substitute lsr, dynsolver
611         and ostres
612       + put a few fields that were local to dynsolver into global common
613         blocks, so that I can move the computation of stresses etc into
614         seaice_lsr (saves coding but may break the adjoint).
615     - replace more hardwired parameters by runtime parameters
616     - add ice masks that mask the rhs of the implicit solvers where there
617       is no ice (commented out in seaice_dynsolver, because i am not sure
618       if this works properly), eventually this should replace the clipping
619       of ice velocities in seaice_dynsolver to +/-40cm/s.
620    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
621      include it only where its needed
622    o move balancing of fluxes before the call of external_forcing_surf
623    o seaice:
624      - correct units of turning angles (now they are really in degrees)
625      - move computation of GWATX/Y out of main routine into dynsolver
626      - initialize GWATX/Y in seaice_init
627    o Apply mask on Fresh-Water flux (needed for SSH forcing).
628      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
629    o seaice: add runtime flags for turning angles (default to zero)
630    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
631      and trend from exf forcing and ctrl control adjustments
632    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
633      (since checkpoint57x_post)
634    o change the default rotation period to 86164.s = the Earth rotation
635    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
636      and based on a reference stratification. Tested within hs94.cs-32x32x5.
637    o seaice advection: add code for choosing between the default (2nd order
638      central differences) and multiDim advection schemes provided by
639      pkg/generic_advdiff
640    o seaice:
641      - removed all references to SEAICE_GRID.h fields from
642        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
643        (cubed-sphere configuration will change a little)
644      - grid computations in seaice_init are obsolete now.
645      - cleaned up code a little so that is easier to read (hopefully).
646      - added new (better?) discretizations of default advection and diffusion
647        (turn on with SEAICEuseFluxForm)
648      - replace 1 in 3d global fields by kSurface in growth.F
649      
650    checkpoint58a_post
651    o seaice:
652      - bug fix in advect.F
653    o shelfice:
654      - separate shelfice load anomaly from pload (breaks with time
655        dependent forcing), => introduce constant field shelficeLoadAnomaly.
656        Its default is 0., but it may be computed more cleverly from (unknown)
657        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
658        done offline. A good approximation of the pressure load anomaly is
659        necessary to avoid large initial adjustment processes underneath
660        deep-reaching shelfice.
661      - small fix in ISOMIP shelfice_thermodynamics
662      - add more sophisticated thermodynamics of Hellmer (1989), this is
663        now the default
664      - give a few constants more intuitive names
665    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
666      if bulk formulae are used in long integration (especially EmPmR). Turn
667      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
668      if balancePrintMean, the imbalance that is substracted is printed to
669      STDOUT.
670    o fix bug (typo) in obcs_apply_eta.F
671    o add a new package shelfice which enables us to model the circulation
672      underneath shelf-ice with draughts of hundreds of meters.
673     - works
674     - to do: + include improved thermodynamics
675              + check whether kSurfC (from model/inc/SURFACE.h) can be used
676                instead of new field kTopC
677              + can we use topoFile, Ro_surf and existing code in ini_depth.F
678                instead of new field R_shelfIce and new code in ini_depth.F
679                and ini_mask_etc.F?
680              + adjust vertical mixing schemes?
681    o seaice pkg:
682     - add a cpp-flag to include a simple formula for a salinity dependent
683       freezing point of sea water at the surface
684     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
685       meridional stresses are now different (and hopefully correct)
686    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
687       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
688       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
689    o pkg/diagnostics: add options and parameters for regional-statistics
690       diagnostics ; define regions by reading a region-mask from a file
691       (might add other options later)
692    o pkg/bulk_force:
693     - add option and parameters to use AIM surface-flux formulae.
694     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
695       others forcing fields (defined in PARM05, parameter file "data") are loaded
696       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
697     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
698     - use the right EXCH call for uwind,vwind (to work on CS-grid).
699     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
700       and parameters (note: calcWindStress replaces .NOT.readwindstress).
701     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
702    
703    checkpoint58
704    o add "--embed-source" option to genmake2 which, when the supporting
705      tools can be compiled (as determined by genmake2) will turn on the
706      embed_files package which then embeds the entire MITgcm source code
707      (*.[fFhc] + Makefile) used for the build within the executable
708      - requested by CNH but off by default
709      - adds a paltry <9MB to the mitgcmuv executable in most cases
710      - only writes the output when useEMBEDSRC in eedata is true
711    o clean up 3-dim. relaxation codes:
712      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
713      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
714      * Thanks to Tom Haine for testing!
715    
716    checkpoint57z_post
717    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
718      affects output (@ truncation level) of exp. plume_on_slope ; updated.
719    o fix the pickup behavior for obcs in combination with ptracers
720    o fix a bug in ptracers_external_fields_load
721    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
722      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
723    o transfered surface NH pressure to eta field (if exactConserv).
724    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
725         and update lab_sea output.txt file.
726    o completing 3-dim. relaxation code: additional term
727         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
728      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
729      * At compile time, in "EXF_OPTIONS.h" set
730          #define  ALLOW_CLIMTEMP_RELAXATION
731          #define  ALLOW_CLIMSALT_RELAXATION
732      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
733          tauThetaClimRelax3Dim = 15552000.0,
734          tauSaltClimRelax3Dim  = 15552000.0,
735      * 3 cases:
736          1) Use a constant-in-time 3-dim. field
737          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
738          3) Real-time relax. to time-evolving prescribed field
739    o Adding Laplacian-type smoothness constraint on
740      initial and boundary (forcing) controls (ic, bc)
741      * enable at compile-time via
742        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
743      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
744      * Absolute scale somewhat unclear so far
745      * no area weighting was included since no other cost term does so far
746    
747    checkpoint57y_post
748    First step for a NLFS adjoint
749    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
750    o new init. routines for calc_r_star, calc_surf_dr
751    o still need to deal with ini_masks_etc
752    o testreport seemed happy
753    checkpoint57y_pre
754    
755    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
756    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
757    o add new offset feature to offline pkg (plus minor cleanup)
758    o cfc fixes for final year of integration
759    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
760      be in GCHEM_OPTIONS).
761    
762    checkpoint57x_post
763    o fix testreport Pb in multiple test experiment.
764    o cleanup our namelist syntax in verification:
765      - make it more F95 standards compliant (some work still needed)
766      - allows the vast majority of our tests to work with gfortran
767    o Non-Hydrostatic:
768     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
769     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
770    o Allow to apply AB on T,S rather than on AB(gT,gS):
771     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
772     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
773       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
774     - need a "clever" read_pickup to restart from the other AB formulation
775    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
776    o remove some unused variables (reduces number of compiler warnings)
777    o adjoint
778      * Disable useVariableViscosity for adjoint for time being
779        (there are a number of extensive recomputations)
780      * Initialize certain variables needed for adjoint
781    
782    checkpoint57w_post
783    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
784                 fix the singleCpuIO RS version of MDSWRITEFIELD
785       and add a WARNING if using globalFiles=T with multi-processors.
786    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
787      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
788    o tracer advection scheme:
789      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
790       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
791       was not very convenient).
792      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
793       (further tests needed for the implicit DST & Flux-Limiter schemes).
794    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
795      and sRef for convenience, handy, when you want to initialize
796      ptracers in a large domain with a constant non-zero value. Also,
797      untangle ptracers_init.F a little.
798    
799    checkpoint57v_post
800    o change dome exp. to use variable viscosity in side-drag terms.
801    o remove all the files from the cfc_offline test since they are now
802      incorporated into tutorial_cfc_offline which has been producing
803      identical results for a few days of testing
804    o add new parameter: sideDragFactor to enable half-slip-side BC
805      and change side-drag S/R to use viscosity from mom_calc_visc
806      (can switch back by setting sideDragFactor=0.); affects results at
807      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
808       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
809    o vorticity & strain are now computed without masking, to account for
810      no-slip-side BC in variable viscosity calculation ; mask is applied
811      anyway later on, before computing advection/coriolis terms.
812    o modify exp4 to test new obcs support for reading from external files
813      and for passive tracers
814    o fix behavior of ptracers_monitor when monitor output is written to a
815      netcdf-file; still not independent of monitor.F (writes in the same
816      file).
817    o change default value of tRef (put a uniform, meaningful value for ocean
818      & atmos) and initialize sRef (was missing, as Martin mentioned).
819    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
820      to be proportional to enstrophy dissipation length.  Thus,
821       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
822      This is now consistent with Smagorinsky and with the manual.
823    
824    checkpoint57u_post
825    o OBCS and PTRACERS: add open boundary support for passive tracers
826      - either use homogenous (pseudo) v.Neumann conditions or prescribe
827        OB-values from file; this is not different from the way theta and salinity
828        are treated
829      - however, Orlanski-radiation conditions are not supported, and the model
830        will stop if you use pTracers and Orlanski at the same time.
831      - beefed up the rountine obcs_external_fields_load: now only those open
832        boundary values are overwritten with values from files for which there
833        are really files, otherwise the OB-fields remain untouched. This makes
834        it possible to use different OBs at different ends of the domain (as
835        with EXF)
836    o reduce number of exch calls in shap_filt (s2).
837    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
838      truncation level) 4/5 MLAdjust test results (11&12 digits match).
839    
840    checkpoint57t_post
841    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
842    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
843      same truncation, independent of the face number: affects affects several
844      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
845    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
846      note that biharmonic viscosity + no-slip was not tested in any experiment.
847    o fix bug in non-linear free-surf side-drag ; generate new output for
848      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
849    o make mnc honor the writeBinaryPrec flag for most kinds of output
850    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
851    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
852      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
853    o add brackets in multi-terms sum to get same truncation, independent of
854      the face number (manage to get exactly same value of gU,gV at the cs-edge)
855      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
856    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
857      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
858      a maximum grid-scale Reynolds number.  Also, changes all length calculations
859      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
860      Suggested values of viscosity parameters found in mom_calc_visc.
861      Many new viscosity diagnostics available.
862    
863    checkpoint57s_post
864    o Add clearing-house for viscosity calculations, mom_calc_visc and
865      correct numerous bugs in LeithD and Smagorinsky discretizations.  
866      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
867      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
868      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
869      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
870      The Strain-Tension form is now called with useStrainTensonVisc=.true.
871      ViscAhStrain and viscAhTension are now retired.
872    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
873    o In response to JMC's bug report, genmake2 now ignores any soft-links
874      that it finds in the *current* directory when searching for files.
875      Soft-links found in any other source directories will still work as
876      they did before.
877    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
878      a C routine to unlimit the stack size
879    o mnc-ify pkg/aim snapshot vars
880    o mnc-ify pkg/land as requested by Daniel
881    o various changes to mnc including:
882      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
883      - output can now be grouped so that all files within a group
884          change the ITER portion of their names in lock-step together
885      - can now read ("global") PER-FACE (in addition to PER-TILE) files
886          and works with both EXCH1 and EXCH2 (but needs more testing)
887      - writing works for all verification test cases w/ g77 on Linux
888    
889    checkpoint57r_post
890    o make MNC variable initialization happen earlier
891    o add diagnostics for (almost) each term of the momentum Eq.
892    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
893    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
894    o remove MINIMAL_TAVE_OUTPUT option ;
895      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
896    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
897      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
898    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
899    o add time-dependent SST, SSS control
900    o cost terms in ecco/ modularized (new cost_generic.F)
901    o cost_averages routines are modularized (new cost_averagesgeneric.F)
902    o new infrastructure for seaice model vs. obs misfits in seaice/
903      * driver from the_main_loop.F is seaice_cost_driver.F
904      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
905      * gradient check in Exp. 6a of natl_box_adjoint/
906    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
907      (see README file)
908    
909    checkpoint57q_post
910    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
911    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
912      - bug was reported by Jean-Michel and Ian Fenty
913    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
914      update exp. cpl_aim+ocn output.
915    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
916      Needed for high-res. runs with large global files
917      to be able to limit tapelev size
918    o Changed some tests for adjoint:
919      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
920      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
921      * global_ocean.90x40x15/ back to default 3-level checkpointing
922    o Modifications to enable scripted COMMON to MODULE conversion
923      * verification/OpenAD/code/ has necessary scripts and description;
924      * converts, compiles and runs successfully;
925    
926    checkpoint57p_post
927    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
928    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
929      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
930    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
931    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
932      (was already the case for dissipation with mom_vecinv,
933       and also the case for grad.PhiHyd when staggered-timeStep)
934      This will allow to put dissipation out-off the AB time-stepping.
935     Unfortunately, affects truncation error. Update output of exp. that "fails"
936      (cg2d matching number) and leave the others for later: front_relax(10),
937      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
938      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
939    
940    checkpoint57o_post
941    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
942      (2) its ready to be documented during the 20050801 DocFest
943    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
944      for ideal_2D_oce and lab_sea on linux_ia32_g77
945    o set to #undef CTRL_SET_OLD_MAXCVARS_30
946      in global1x1_tot/code_seaice_adj to access indices 32, 33
947      (worth another tag)
948    
949    checkpoint57n_post
950    o adding precip control xx_precip 32
951    o adding swflux control xx_swflux 33
952    o Replacing 10 forcing penalty cost routines by 1 generic.
953    o Implementing partitioning in time-mean and variable adjustment
954      for atmos. state.
955    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
956    o in natl_box_adjoint:
957      * updated exp 1 to 10
958        (but does not have time-mean vs. variable split results yet)
959    o updated global1x1/*_seaice_adj/
960      to incorporate latest changes
961    o enable useSingleCpuIO for mdsio vector routines
962      (applies in particular to tapelev I/O)
963    o removed inefficient K-loop in all active_file*control*.F
964    
965    checkpoint57m_post
966    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
967      and advect_cs (use EXCH-2 and standard cs-32 grid files).
968    o pkg/exch2: filling of face-corner halo regions is optional
969      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
970    
971    checkpoint57l_post
972     tag before updating tutorials (pre-release-2)
973    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
974       for output and interpolation of input fields onto model grid)
975    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
976       Affects results of exp. rotating_tank ; update output.txt.
977    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
978          and taking the square quantity and/or using a fraction-weight field.
979    o fix aim_diagnostics_init.F mate numbers.
980    o add mnc output capability to diagnostics/diagstat and update
981      our cvsignore files for the ACSII output generated
982    
983    checkpoint57k_post
984    o lab_sea now uses diagnostics package and provides a suite of
985      new EXF diagnostics output.
986    
987    checkpoint57j_post
988    o exf
989      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
990        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
991        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
992      * extended diagnostics output
993        - now includes all EXF variables
994        - hs, hl moved to common block
995        - separate S/R for diagnostics, called after ctrl vector is added
996        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
997        - EXFqnet contains true Qnet (i.e. includes qsw)
998      * updated verif. lab_sea, global_with_exf
999      * Rearranging hflux (exf_mapfields -> exf_getforcing)
1000        to ensure that diagnostics sees a true EXFqnet
1001    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
1002    o diagnostics pkg: change pointers so that 1 diagnostic can be used
1003      several times with different frequencies.
1004    o mnc-ify the thsice package as requested by Daniel Enderton
1005      - the monitor--MNC output needs work
1006      - many attributes need to be added (most are currently blank)
1007    o mnc-ify theaim_v23 package as requested by Daniel Enderton
1008      - many attributes need to be added (most are currently blank)
1009    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
1010    o add Sadourny like discretization to the 4th.O vorticity advection scheme
1011    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
1012      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
1013         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
1014    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
1015     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
1016    
1017    checkpoint57i_post
1018    o Diagnostics package was changed: diagnostic allocation is now deactivated
1019      by setting an empty file name in the namelist (used to be by setting 0 frequency)
1020    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
1021      add 1rst Order upwind vertical Shear.
1022    o add a quick fix for A/B checkpointing in OFFLINE mode
1023    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
1024      end-run around the C/Fortran linking horror in eesup/src/timers.F
1025    o added pkg/runclock: allows user to terminate run based on wall clock
1026    o added non-hydrostatic scaling parameter: nh_am2
1027    o pkg/my82: futile attempt to make results compiler-independent by adding
1028      some "_d 0", etc. no effect.
1029    o for mnc output, fill the 'T' coordinate var with myTime and create a
1030      separate 'iter' variable for iteration count
1031    o pkg/diagnostics:
1032      add new capability: output of Global/Regional & per-level statistics ;
1033      tested against monitor output (including land & thSIce) on various exp.
1034    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
1035    
1036    checkpoint57h_done
1037      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
1038      data.diagnostics, data.gchem, data.ptracers) is done.
1039    
1040    o pkg/diagnostics: prepare for Global/Regional statistics.
1041      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
1042    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
1043      and rename it: DIFFERENT_MULTIPLE
1044    
1045    checkpoint57h_post
1046    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
1047    o pkg/diagnostics: change output frequency, now in seconds (instead
1048      of Nb of iterations). This requires to change data.diagnostics.
1049    checkpoint57h_pre
1050    
1051    o in mnc, let the user create the output dir if both mnc_outdir_date
1052      and mnc_outdir_num are false
1053    o add fflags() to pkg/diagnostics which allows one to specify, on a
1054      per-file basis, the file precision [default behavior is unchanged]
1055    o added diagnostics to pkg/kpp, including computation of mixed layer
1056      depth based on a temperature/density criterion
1057    o updated verification/natl_box to test the new pkg/kpp diagnostics
1058    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
1059    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
1060    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
1061      not mnc -- this mistake was found by JMC and is now corrected
1062    
1063    checkpoint57g_post
1064    o add Adams-Bashforth 3rd Order time stepping:
1065      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
1066      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
1067    checkpoint57g_pre
1068    
1069    o make lambda[Theta,Salt]ClimRelax spatially varying
1070      (default remains spatially uniform constant based on tau)
1071    o added new control variables
1072      * init. uVel, vVel, etanN
1073      * lambda[Theta,Salt]ClimRelax
1074    o separate masks used for ctrl_pack/unpack 'from write_grid' output
1075      (suggested by G. Forget)
1076    
1077    checkpoint57f_post
1078    o add parameter "baseTime" = model base time = time at iteration zero
1079      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
1080      account for baseTime shift
1081    o move Coriolis arrays from PARAMS.h to GRID.h
1082    checkpoint57f_pre
1083    
1084    o mnc-ifying the seaice package
1085    o introduced an alternative length scale calculation for use in the limiting
1086      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
1087    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
1088    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
1089      as well as grad(vort3).  Made it compatible with both approximate form
1090      for the cubed sphere and full form of these gradients.  Added flag
1091      useFullLeith to select between approximate and full form.  
1092    o add "d0" in getcon.F to reduce differences between compilers/platforms
1093      update output.txt of exp. fizhi-gridalt-hs
1094    o change port_rand funtion to allow to set the seed.
1095    o fix obscure MNC bug involving conversion between reals and integers
1096      - it caused no problems with certain (eg. gcc, ifc) compilers but the
1097        new version is now more standards-compliant
1098    o adjoint-related modifications
1099      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
1100      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
1101      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
1102    
1103    checkpoint57e_post
1104    o Adding eddy stress controls a la Ferreira et al.
1105    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
1106    
1107    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
1108      update output.txt of exp. fizhi-gridalt-hs
1109    o add more "Z" dimensions and associated coordinate vars to MNC
1110    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
1111    o parameter calendarDumps: when set, approximate months (30-31 days) and years
1112      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
1113      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
1114      months and years.  Requires pkg/cal.
1115    o diagnostics: add pickup functionality
1116      - off by default for backwards compatibility
1117      - current version only uses MDSIO -- MNC will be added
1118    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
1119    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
1120    
1121    checkpoint57d_post
1122    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
1123    o modify verification/ideal_2D_oce so that it tests the creation of mnc
1124      output from the diagnostics package
1125    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
1126    o make genmake2 more portable by using ".$FS" instead of ".f" for more
1127      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
1128    o add coordinate variables to the MNC output from the diagnostics package
1129    o change MNC-flags default value: true when useMNC=TRUE
1130    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
1131      the ability (off by default) to read the grid information using MNC
1132    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
1133    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
1134    o do snap-shot diagnostics at the middle of the time-interval (instead of
1135      at the end).
1136    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
1137      new test for AIM with thSIce + slab-ocean
1138    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
1139    o move state variable diagnostics to the beginning of the time step ;
1140      (note: still needs some work specially for snap-shot diagnostics)
1141      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
1142    
1143    checkpoint57c_post
1144    o Change testing option (-ieee) to get closer agreement between g77 & ifort
1145    o generate new output.txt files on faulks with g77 & the new -ieee option
1146    checkpoint57c_pre
1147    
1148    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
1149      update output.txt of exp. global_ocean.90x40x15
1150    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
1151      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
1152    o add saltFlux(+File) forcing capability with periodicExternalForcing
1153    o allow to use pkg diagnostics for GM-Redi & ThSIce output
1154    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
1155    o improvements for the MNC output from DIAGNOSTICS:
1156      - correct handling of the unlimitied dimension
1157      - all dims now have associated coordinate variables
1158      - variables located at U, V, and Corner ("Z") points are now written
1159        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
1160        *all* data points are output
1161    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
1162    o added pkg/seaice/seaice_monitor.F
1163    o mdsio_readfield.F can now read files visible only to master MPI process.
1164    o pkg/seaice: some test code for ice-modified ocean stress
1165    o exf_getffields interpolation defaults to bilinear for all scalar forcing
1166      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
1167      spurious negative numbers for precipitation and humidity.  Will cause
1168      some small numerical differences for integrations using pkg/exf/exf_interp.F.
1169    o pkg/ctrl/
1170      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
1171        May be enabled via doPackDiag
1172      *  introduce z-scaling of
1173         + gradient (doZscalePack) and
1174         + control (doZscaleUnpack)
1175    o pkg/mdsio/
1176      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
1177      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
1178    
1179    checkpoint57b_post
1180    o simplify options in diagnostics_fill arguments (remove weird combinations)
1181    o fix MNC coordinate variables so that they now contain per-face index
1182      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
1183      general, EXCH2 grids are only aligned to a "local" coordinate system
1184    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
1185    o Implement instantaneous output within pkg diagnostics:
1186      setting a negative frequency in data.diagnostics produces
1187     "snap-shot" output (as opposed to time-average if freq > 0)
1188    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
1189      NOTE: change ptracer diagnostics name: use 2 characters to work with
1190            more than 9 tracers. Add also diagnostics of advect & diffus flux.
1191    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
1192      becomes the coordinate variable for the 'T' dimension
1193    o add CF-style coordinate variables to MNC
1194      - just a first cut:  numbers are meaningless on the cubesphere and
1195        missing along the T axis but otherwise it works!
1196    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
1197    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
1198    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
1199      this is based directly on what the model compute, so that the content of
1200      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
1201    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
1202    o clean up build options files for SunOS, in particular
1203      - remove -traditional from xmakedepend
1204      - change -xarch=v9 to -xarch=native for f77
1205      - restore use of make (not gmake)
1206      - add CC=gcc if using g77
1207    o changes per discussion of AM, JMC, & EH3 today:
1208      - move redundant "grid" variables out of "state" -- in preparation of
1209        creating proper CF-style coordinate variables and in recognition
1210        that any/all grid variables can be easily copied (eg. w/NCO) from
1211        the grid files into any of the other NetCDF files
1212      - *always* output grid variables with MDSIO (this will eventually be
1213        changed)
1214      - output MNC grid file if useMNC is true
1215    o every instance of _END_MASTER() has been found and replaced with
1216      _END_MASTER( myThid ) in order to satisfy certain picky Sun
1217      preprocessors
1218    o re-arrange diagnostics pkg initialisation:
1219     - allow each package to extend the available diagnostics list
1220     - add some checking and fix small problems (multi-threaded, ...)
1221     - new S/R diagnostics_fill (replace fill_diagnostics):
1222       look through the short list of active diag. (instead of the long list)
1223       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
1224    
1225    checkpoint57a_post
1226    o this set of changes restores TAMC compatibility
1227      tested for global_ocean.90x40x15 adjoint on trough
1228      (what a pain)
1229    
1230    checkpoint57a_pre
1231    o some modifs in tools/build_options for sunos
1232    o call ctrl_pack for ctrl at end for optimcycle=0
1233    
1234    checkpoint57
1235    o add horizontal bi-harmonic viscosity for vertical velocity
1236      - new parameter viscA4W (defaults to viscA4)
1237      - affects only non-hydrostatic code
1238      - to be done: no-slip lateral boundary conditions
1239    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
1240    o implement Implicit Vertical advection for pTracers
1241    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
1242      (implemented also for implicit vertical diffusion & advection)
1243    o OBCS: extend application of tracer open boundary conditions
1244      to a strip beyond the boundary of width Olx/Oly
1245    o add call monitor to TAF set of required calls (flow directives)
1246      and include in natl_box_adjoint
1247    o untangle a few ifdefs related to cost, ctrl, autodiff
1248      untangel a few ALLOW_ECCO_OPTIMIZATION
1249    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
1250      (theta2, salt2 in ecco_cost_weights)
1251    
1252    checkpoint56c_post
1253    o OBCS as control variables
1254      - update ctrl_ad_diff.list, obcs_ad_diff.list
1255      - remove balance of obcs controls from default
1256      - fix index bug nobcs in ctrl_init
1257      - fix dummy fields filen in ctrl_pack
1258      - add dummy weights for obcs
1259    o lsopt: comment out fort.94 output
1260    o optim:
1261      - remove unnecessary header files
1262      - adjusted namelists
1263      - add xerbla.F to Makefile
1264    o exf:
1265      - multiple modifications of exf_check_range
1266      - unit change in exf_init_runoff from [m/year] to [m/s]
1267    o mdsio:
1268      - i/o-vector change debugLevel from debLevA to debLevB
1269    
1270    checkpoint56b_post
1271    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
1272      is called from DO_THE_MODEL_IO
1273      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
1274      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
1275      - clean up PTRACERS_WRITE_TIMEAVE a little
1276    o add another verification experiment that tests both the cfc-pkg and
1277      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
1278      reactive tendencies treated inline with regular timestepping
1279    o testreport previously did a lousy job of comparing small numbers, so
1280      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
1281      implemented in the little c-progam tmp_cmpnum.c which is embedded in
1282      testreport.
1283    o ptracers_monitor: bug fix for MPI
1284    
1285    checkpoint56a_post
1286    o GCHEM: finish reorganizating the package
1287      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
1288        (introduces another 3D-array for each passive tracer, but only if
1289        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
1290        gchemTendency is not needed because the timestep is done separately)
1291      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
1292      - GCHEM is now---more or less cleanly---separate from PTRACERS
1293      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
1294        so clear to me how that should be done in a general way.
1295    o CFC: improve formatting of output in CFC_ATMOS
1296    o PTRACERS:
1297      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
1298        that ALL experiments with ptracers enable can be checked. This makes
1299        GCHEM_MONITOR obsolete.
1300      - include a runtime parameter PTRACERS_monitorFreq that defaults to
1301        monitorFreq
1302      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
1303    o add PTRACERS (PTR0[1-5]) to testreport output
1304    o exf_check_range:
1305      * default changed to .TRUE.
1306      * will check values for niter0 if debLevA, every timestep if debLevB
1307      * STOP in exf_check_range if 'out of range'
1308      * range chosen generous to allow for potential extema
1309      TBD: a version with stricter range
1310           permitted range would be runtime parameters
1311    o GMredi:
1312      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
1313      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
1314      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
1315    o GCHEM:
1316      - move call to GCHEM_FORCING_SEP, so that it is now called before
1317        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
1318      - introduced a useGCHEM runtime flag and applied it everywhere.
1319      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
1320        this flag is now only visible within GCHEM-pkg routines.
1321      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
1322        be replaced by a 3D array that is computed before thermodynamics; for
1323        this, the tracer ID iTracer had to be included into the parameter list
1324        of ptracers_forcing
1325      - set up forward_step to call gchem_forcing, that will replace
1326        gchem_forcing_int in ptracers_forcing
1327      - cleaning up
1328    o small cleaning of exch2: remove files that are also in eesupp/src
1329    
1330    checkpoint56
1331    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
1332    o mnc: cleanup "full" files--fixes out-of-memory problem
1333    o ECCO-GODAE
1334      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
1335      * fully merged and updated from SIO code
1336        windstress sign change affects
1337        - exf_inscal_[u/v]stress
1338        - sign of xx_tau[u/v] adjustments
1339        - signs in cost_scat
1340      * ctrl_get_gen: avoid update of tau[u/v] for first few days
1341      * natl_box_adjoint updated and compressed
1342      * 2-level checkpoint switch added
1343        (tested in EXP. 1 of natl_box_adjoint)
1344      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
1345    o SVD
1346      * first complete, non-hacked version for SVD calculations
1347      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
1348        performed via direct access files admtlm_vector.it????
1349        (via ctrl_[un]pack)
1350      * optimcycle is used for ARPACK iteration counter
1351        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
1352      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
1353        and add linear transforms where necessary
1354      * controls are initial/final SST, SSS (can be extended; need to check
1355        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
1356    o mdsio: filename info to both stderr, stdout
1357    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
1358      from sign change
1359    
1360    checkpoint55j_post
1361    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
1362      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1363    o add consistent build directories and .cvsignore files to verification
1364    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
1365    o make all subroutines 30 or less characters in length for certain older
1366      compilers to work (a thorough search only turns up two routines in
1367      pkg/ptracers)
1368    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
1369      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1370    
1371    checkpoint55i_post
1372    o change arrays for total vertical diffusivity (2.D if explicit,
1373      3.D if implicit) ; each ptracer uses its own background value.
1374    o added mnc/NetCDF output capability to ocn_compon_interf
1375      - added bits to verification/cpl_aim+ocn so that it can run on
1376        ITRDA and other clusters without the mpirun "-wd" option
1377    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
1378      configuration
1379    o give MNC the ability to create additional files rather than
1380      exceeding a specified file size limit "MNC_MAX_FILESIZE"
1381      - the default is just less than 2GB which is a practical limit
1382        on many systems
1383    o Compute the non-local term using either KPP vertical diffusivity (=default)
1384       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
1385    
1386    checkpoint55h_post
1387    o add verification test "vermix"
1388    o remove all the *_ioinc flags and replace with the single global
1389      outputTypesInclusive flag
1390    o allow to set a vertical profile of vertical diffusivity for T & S
1391    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
1392    o useMNC moved from data.mnc to data.pkg
1393    
1394    checkpoint55g_post
1395    o Renaming carbon AD experiments to comply with testreport conventions
1396    o Updating adjoint of Held-Suarez hs94.1x64x5
1397    o Fixing directives for non-ECCO forward_step, after ECCO directives
1398      have been fixed to avoid recomp. of do_oceanic_phys
1399      Works well for global_ocean.90x40x15,
1400      but recomp. issue remains for carbon
1401    o Updating adjoint output for natl_box_adjoint after
1402      pkg/ecco has been modified (see taga c55d_post)
1403    
1404    checkpoint55f_post
1405    o rename to timeave_init_fixed
1406    
1407    checkpoint55e_post
1408    o some delicate re-shuffle of store directives to avoid one
1409      extra call of do_oceanic_physics
1410      affects ecco_the_main_loop.F, do_oceanic_physics.F
1411      checkpoint_lev1_directives.h
1412    o NB: this may break global_ocean adjoint temporarily,
1413      but it is clear how to fix it. Will do later, need this now.
1414    
1415    checkpoint55d_post
1416    o ECCO specific cost function terms (up-to-date with 1x1 runs)
1417    o ecco_cost_weights is modified to 1x1 runs
1418    o modifs to allow observations to be read in as
1419      single file or yearly files
1420    o enable to read exf forcing fields as either
1421      single file or yearly files (flag useExfYearlyFields)
1422    checkpoint55d_pre
1423    
1424    o switch between 2-level and 3-level checkpointing
1425    o add ability of MNC to write local and "partial" (eg. 2D slices where
1426      the full 3D field is never actually stored) arrays to NetCDF files
1427      with the correct (that is, the complete multi-dimensional) set of
1428      array indicies
1429      - used in mom_vecinv() to write the diagFreq output
1430      - tested (demonstrated) in verification/aim.5l_cs
1431    o further mnc-ification
1432      - add verification/lab_sea to the list with mnc setups
1433      - fix undefined mnc v-names in cd_code
1434      - add kpp to mnc output (both snapshot and timeave)
1435    o non-hydrostatic code
1436      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
1437        in calc_gw.F
1438      - defaults to viscAh
1439      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
1440        friction or Leith) in non-hydrostatic mode, as long as there is
1441        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
1442    o pkg/cost
1443      extend simple cost functions to treat time mean quantities
1444      (T,U,V) via cost_accumulate_state from cost_tile
1445    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
1446        be 2 times larger than the minimum size the advection scheme requires.
1447        now get a perfect conservation of salt in advect_cs test-exp (updated)
1448    o GGL90 (Gaspar's TKE mixed layer)
1449      - add horizontal diffusion of TKE, requires exchanges in
1450        do_fields_blocking_exchanges, horizontal diffusivity is zero by
1451        default. In OPA there is no horizontal diffusion of TKE but the
1452        mixing coefficients are computed from a horizontal average of TKE of
1453        6 points or so. I think that diffusion has a little more physical
1454        justification.
1455      - clean up ggl90_calc in the hope of reducing memory usage (this hope
1456        was in vain)
1457      - mask tke-variable in ggl90_init
1458    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
1459    o fix biharmonic diffusion on CS-grid.
1460    o more obcs stuff
1461      - added obcs_external_fields_load as an alternative to the EXF-pkg option
1462        for reading boundary values. This routine is called from
1463        obcs_prescribe_read
1464      - updated obcs_check
1465      - changed sponge layer relaxation parameter units for days to seconds
1466      - turned off sponge layer by default
1467      - changed argument list of OBCS_CALC to myTime+deltaTclock
1468      - fixed about 35 bugs in obcs_external_fields_load
1469    
1470    checkpoint55c_post
1471    o obcs stuff
1472      - new runtime flags useOBCSprescribe, useOBCSbalance
1473      - re-arranged obcs_calc
1474      - moved exf_getobcs to obcs_prescibe_read
1475        obcs_prescibe_read is called after ORLANSKI stuff
1476        and independent of it (executable can contain all).
1477      - updated obcs_check
1478      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
1479        These may be necessary only if tangential velocities are
1480        prescribed at OB, not sure, needs testing.
1481    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
1482      which simplifies the calls and passes the ifc check-bounds test
1483    
1484    checkpoint55b_post
1485    o add a 2D scalar, Z location, exchange_2 routine.
1486    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
1487      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
1488      affects advect_cs results (for the wrong reason): update output.txt
1489    o use a more standard discretization for biharmonic viscosity ;
1490     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
1491      affects results of dome set-up: update output.txt
1492    o fix gad_advection.F (CubedSphere part), back to version 1.23
1493    o fix bug in mom_vi_del2uv.F (CubedSphere part).
1494    
1495    checkpoint55a_post
1496    o merged code to
1497      * prescribe/read time-dependent open boundaries
1498        (works in conjunction with exf, cal)
1499      * sponge layer code for open boundaries
1500      * each boundary N/S/E/W now has its own CPP option
1501        (healthy for the adjoint)
1502    
1503    checkpoint55
1504    o up-to-date adjoint of previous breaks
1505      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
1506      - global_ocean_ebm: adjoint still needs fix (TLM ok)
1507      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
1508      - carbon: * remove tr1-related adjoint verification
1509                * add ptracer as control variable
1510    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
1511      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
1512    
1513    checkpoint54f_post
1514    o in verification/carbin/ remove experiment related to
1515      ALLOW_PASSIVE_TRACER (array tr1 etc)
1516      code_ad/ input_ad/ results_ad
1517    
1518    o add two new packages
1519      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
1520        + subject to optimization (memory)
1521      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
1522        + subject to reordering (many GOTOs in the original code)
1523        + so far opps is called for every (i,j) point, and then operates in
1524          the vertical; one may want to reorder the scheme in order operate in
1525          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
1526          fields)
1527    o overhaul of IO so that we now have flags for MDSIO and/or MNC
1528      - all verification tests compile and run with linux_ia32_g77
1529      - defaults are compatible with current input files--nothing
1530        should change if you were not previously using MNC
1531      - MNC output has been added in numerous places (eg. timeave)
1532        but there are still a few writes not yet do-able with MNC
1533        (this is in progress)
1534      - flags now allow for either/or/both use of MDSIO and MNC and
1535        documentation will soon follow
1536      - numerous small formatting cleanups for ProTeX
1537    o add version info (via BUILD_INFO.h) to MNC and stdout
1538    
1539    checkpoint54e_post
1540    o add two new packages
1541      - pp81 (Packanowski and Philander, 1981), Richardson number and
1542        stratification dependent mixing
1543      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
1544      - these scheme operate in a similar manner as KPP (without ghat, of
1545        course), however there is only one diffusivity that is used for both
1546        temperature and salinity (and passive tracers)ç
1547    o add offline package
1548    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
1549      provided by Stephanie Dutkiewicz
1550    o genmake2: add ability to search for C compilers and cleanup test output
1551      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
1552    
1553    checkpoint54d_post
1554    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
1555    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
1556      leading to additional shift by 5 days each year of integration
1557       (i.e. leading to considerable offset over the years)
1558    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
1559    o start with no AB and no initial filtering (staggerTimeStep):
1560      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
1561    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
1562      (external loading & cpl import/export stay in forward_step.F)
1563    o update coupling interface to work with new staggerTimeStep
1564    o change MDSIO ptracers_pickup.
1565    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
1566    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
1567    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
1568    
1569    checkpoint54c_post
1570    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
1571      this affects (truncation error) output.txt of test-exp:
1572       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
1573    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
1574    o change Qnet to always be the net heat flux, (+upward).
1575      affects (truncation error) output of natl_box exp.: updated
1576    o define the max number of passive tracers in PTRACERS_SIZE.h
1577    o start to test mnc routinely in exp0
1578    o add sea-ice loading (sIceLoad) as a new forcing field.
1579    
1580    checkpoint54b_post
1581    o add testreport "-j JOBS" option for parallel builds (tested and pretty
1582       impressive on Altix and Opteron systems)
1583    o diagnostics can now write NetCDF files through the mnc package
1584    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
1585    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
1586    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
1587      affects (truncation error) output of lab_sea & natl_box exp.: updated
1588    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
1589    
1590    checkpoint54a_post
1591    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
1592    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
1593    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
1594    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
1595      + internal_wave (shift in writing cg2d_ini_res)
1596    checkpoint54a_pre
1597    
1598    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
1599      - modified verification/lab_sea and natl_box_adjoint accordingly
1600    
1601    checkpoint54
1602    checkpoint53g_post
1603    o prepare splitting of thermodynamics: store convect.counter in common block
1604    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
1605      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
1606    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
1607    o new parameter "nShapS": allow to treat differently S from T (nShapT)
1608    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
1609    o restore adjointability
1610    
1611    checkpoint53f_post
1612    o modifications that affect AIM experiment results (update output.txt):
1613      - no advection of S at top interface Nr (pkg/generic_advdiff)
1614      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
1615    o AIM pkg:
1616      - include stability function into surf.Flux derivative relative to Tsurf
1617      - calculate clear-sky radiation & surface temp. change (for diagnostics)
1618    
1619    checkpoint53e_post
1620    o merged cylindrical coord configuration
1621    o added rotating_tank experiment
1622    checkpoint53e_pre
1623    
1624    checkpoint53d_post
1625    o faulks upgraded: re-generate output.txt that have changed:
1626       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
1627    o Added Bryan and Lewis, 1979, vertical diffusivity profile
1628    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
1629    o added Sadourny discretization of Coriolis
1630      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
1631      - re-enabled use of omega3 (useAbsVorticity)
1632    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
1633      vector-invariant equations
1634      - note: does *NOT* yet use same variable visc. for no-slip BC's.
1635    o recoded the lateral boundary conditions for non-hydrostatic w, this time
1636      hopefully without new bugs
1637      - still to do: biharmonic friction for non-hydrostatic w
1638    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
1639    o regenerated output for global_ocean_ebm (using -ieee)
1640    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
1641      of mom_common/
1642      - simple re-arrangement of instructions within computing loop
1643    checkpoint53d_pre
1644    
1645    checkpoint53c_post
1646    o new version of coupler for AIM+thSIce and Ocean models
1647     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
1648     - land: change Evaporation of snow
1649     - aim with thSIce: fix bug in snow-precip.
1650    o changes to calc_gw.F
1651     - bug fix for w^2 term near the bottom boundary
1652     - (hopefully) improve the lateral slip boundary condtions for use with
1653        partial/looped cells
1654      - because the bug fix changes two verification experiments anyway (exp5
1655        and plume on slope), change the lateral boundary condition from half slip
1656        to the value of no_slip_sides
1657    o ebm package wasnt quite up to the parallel task. Fixed that.
1658    o Adjoint of EBM package + verification
1659      * TLM OK
1660      * ADM not sufficient accuracy yet (needs further testing)
1661    
1662    checkpoint53b_post
1663    o Commiting new energy balance model to repository
1664      * package is pkg/ebm
1665      * verif. is verification/global_ocean_ebm
1666      * references are in ebm_driver.F
1667    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1668    C        Global thermohaline circulation. Part I:
1669    C        Sensitivity to atmospheric moisture transport.
1670    C        J. Climate 12(1), 71-82
1671    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1672    C        Global thermohaline circulation. Part II:
1673    C        Sensitivity with interactive transport.
1674    C        J. Climate 12(1), 83-91
1675    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
1676    C        Destabilization of the thermohaline circulation
1677    C        by atmospheric eddy transports.
1678    C        J. Climate 7(12), 1870-1882
1679    o Will need long integration testing.
1680    checkpoint53b_pre
1681    
1682    o created pkg/mom_common in preparation for variable viscosity code
1683    o renamed and split ini_mnc_io
1684    o pkg/land: only liquid water can diffuse or run-off
1685    o AIM using land: soil wetness availability account for snow
1686    o added printMapIncludesZeros to EEPARMS namelist
1687    
1688    checkpoint53a_post
1689    o restore TAMC compatiility for exf_constants.h
1690      (no usage of _d in .h)
1691    o Additional storing in KPP in an attempt to fix
1692      TAMC problem with adjoint of KPP code.
1693      (no success...)
1694      Identical code works fine with TAF.
1695    o Fixed verification/natl_box_adjoint experiments.
1696      Initial conditions for Experiments 4 and 5 are now
1697      set to "SEAICE_initialHEFF=0", which is more reasonable,
1698      and hence gives results closer to that of Experiment 2.
1699      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
1700    
1701    checkpoint53
1702    o stable checkpoint with up to date adjoint
1703      TLM tests only run for 1st grdchk at the moment. Its unclear if
1704      this is a code problem or a problem with resetting code for g_
1705      variables that is being autogenerated wrong.
1706      Otherwise:
1707       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
1708       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
1709         are both still in chaos following their security messes.
1710    
1711    checkpoint52n_post
1712    o various build (mostly genmake2) changes including:
1713      - ability to build/run more easily within Cygwin and MacOS X
1714      - more complicated Makefiles with a stronger dependence on Gnu Make
1715    o pkg/seaice modifications
1716      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
1717        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
1718        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
1719      - changed proxy for geostrophic velocity and updated
1720        verification/lab_sea/results/* accordingly
1721      - removed ADI dynamic solver from pkg/seaice
1722      - replaced all occurrences of 1/CSTICE or 1/CSUICE
1723        they caused a segmentation fault under certain circumstances
1724      - removed unused field WATR
1725    o bug fix in exf-package:
1726      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
1727         now reflect that.
1728    o small fixes in the cal-package:
1729      - set reference date to first of January for the 'model'-calendar
1730      - failing of cal_CheckDate in cal_FullDate now actually results in a
1731        warning
1732    o small modifications in exf-package to increase flexibility:
1733      - change climtempfreeze from a constant to a runtime parameter that
1734        is specified in data.exf_clim (default = -1.9)
1735      - introduce runtime parameter windstressmax (default = 2.0) that is
1736        specified in data.exf
1737    o fix in pkg/thsice:
1738      - update Evap (Tsf changes) to be consistent with Latent heat flux
1739      - maintain snow precipitation unchanged (even if Tsf >=0).
1740     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
1741    
1742    checkpoint52m_post
1743    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
1744      this does not change any of the results, because myIter=0 in swfrac always
1745      lead to jwtype=2 (the default anyway), but the call makes little sense
1746      as a default
1747    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
1748    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
1749      atmospheric model (AIM) to use it ; add a "slab ocean" component.
1750    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
1751    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
1752    o extending useSingleCpuIO option to work with new exch2 I/O format
1753      - old-style, missing-tile I/O is still accessible by defining CPP
1754        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
1755    o monitor package can write to NetCDF files and/or STDOUT
1756    o fix re-definition bug in MNC_GRID_INIT_ALL()
1757    o doc/api_reference added
1758      - a framework for building an API Reference Manual using all
1759        the "protex" comments embedded in the code
1760      - see pkg/generic_advdiff, pkg/mnc for examples
1761    o MNC:
1762      - make myThid the last argument for all subroutines
1763      - new default for the grid files: NO halos
1764      - add useMNC and other run-time flags
1765      - separate per-file-group handling of the unlimited dimension
1766      - early initialization of MNC w/ flags read at the eeboot stage
1767        and lookup tables set in initialize_fixed
1768      - write all MNC output to a freshly-created directory
1769    o thermodynamics sea-ice (thsice) is now tested with testreport.
1770    o test exp. advect_cs: use the standard cs32 grid ; update output.
1771    o Added functionality to grdchk:
1772      pick global i,j,k position (or nearest wet) where to perform check.
1773    
1774    checkpoint52l_post
1775    o new land formulation:
1776      a) use ground enthalpy as prognostic variable to ensure exact
1777         energy conservation.
1778      b) account for water temperature and for latent heat of freezing
1779         in all processes (rain, run-off, ground storage)
1780      c) compute surface and ground temperature implicitly.
1781    o aim_v23 modification for new land model:
1782      a) Treat separately land / ocean / sea-ice surface fluxes
1783         to allow implicit computation of land & sea-ice surface temp.
1784      b) add snow precipitation.
1785    checkpoint52l_pre
1786    
1787    o fix problem (when 1 tile is empty) in min/max monitor.
1788    o fix bug in timeAve (u,vZetatave in common block)
1789    o no restoring terms under ice for pkg/seaice
1790    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
1791    o bug fix for pkg/seaice pickups
1792    o change MNC call locations and add coordinate attributes
1793    o mask vorticity at the corner ; affects global_ocean.cs output
1794    o fix ini_curvilinear_grid ; test CS experiments with mpi
1795    o aim.5l_cs: modify sea-ice fraction input file ; update output
1796    o exf: Adding simple range check routine for exf fields after read
1797    
1798    checkpoint52k_post
1799    o removed top-level directory "diags"
1800      - we migrated these functions to pkg/timeave a long time ago
1801    o fixed bug introduced in pkg/monitor
1802    o accuracy ctrlprec = 32 insuffient for gradient checks using
1803      averaged fields (I/O via cost_averages)
1804      -> use ctrl.h in active_file*.F to control I/O precision.
1805    o paramter list of CALL ADTHE_MAIN_LOOP
1806    o added initial do_the_model_io to ecco
1807    o set all ...Freq to zero after cost_final
1808      taveFreq, dumpFreq, pChkptFreq
1809    o MAIN and ECCO differentiability restored
1810    
1811    checkpoint52j_post
1812    o fix nchklev in tamc.h for global_ocean...
1813    o Bringing flow and store directives up-to-date
1814    o Really weird thing!
1815      call do_the_model_io from the_main_loop with parameters
1816      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
1817      TAF places a faulty re-call of initialise_varia
1818      after cost_final call which should not be there!
1819    checkpoint52j_pre
1820    
1821    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
1822      error messages
1823    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
1824    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
1825      debug output
1826    o modfied mdsio_writefield.F to handle non-global files under exch2
1827    o update AIM Cubed-Sphere exp (aim.5l_cs):
1828      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
1829    o update AIM Equatorial Channel exp:
1830      use standard aim_v23 pkg and change the SST fields to be more realistic.
1831    o globalFile now works with exch2
1832    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
1833      mon_vort3.F to make exch2 friendly with >1 tile per cube face
1834    o limit timeave output for hi-res integrations
1835    
1836    checkpoint52i_post
1837    o removed CPP_EEOPTIONS.h from verification/*/code
1838    o updated the tiling for global_ocean_pressure
1839    checkpoint52i_pre
1840    
1841    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
1842      the old pkg/aim).
1843    
1844    checkpoint52h_pre
1845    o shortened offending lines in exch2_send_rx?.template
1846    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
1847    o genmake2: add build & execute test for NetCDF code
1848    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
1849      old grid files, moved CPP_EEMACROS.h to pkg/exch2
1850    o added useSingleCPUIO flag to monitor.F and mon_out.F
1851    o added temporary hack for sea-ice dynamics on the cube:
1852      metric terms are ignored and it is assumed that
1853      there is no sea-ice on cube faces 1, 2, 4, and 5.
1854    
1855    checkpoint52f_post
1856    o added exch2 cube routines to pkg/exch2
1857    o modified hs94.cs-32x32x5 to use it
1858    o added new grid files to hs94.cs-32x32x5
1859    checkpoint52f_pre
1860    
1861    checkpoint52e_post
1862    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
1863      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
1864    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
1865      to work with implicit vertical advection and AB ;
1866    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
1867    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
1868     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
1869    checkpoint52e_pre
1870    
1871    o fix bug in impldiff when Nr=1 or Nr=2.
1872    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
1873    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
1874    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
1875      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
1876    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
1877    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
1878    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
1879    
1880    checkpoint52d_post
1881    o re-tiled many expts to allow comparison in multi-processor mode
1882      - updated output accordingly
1883      - changed hs94.128x64x5 to use intial T from file rather than use the
1884        random number generator
1885    o add infrastructure in model routines for fizhi and gridalt packages
1886    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
1887    o changes to permit hi-res, cubed-sphere, configuration
1888      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
1889      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
1890      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
1891        of surface winds for the cube
1892      (A verification experiment, based on global_ocean.cs32x15, but with
1893       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
1894       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
1895       complete with example surface forcing files and matlab scripts to look
1896       at the output and compare it with that of global_ocean.cs32x15.)
1897    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
1898       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
1899       to conform to the common rule.
1900    o check-in the first version of the coupler + interfaces for multi-components
1901       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
1902       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
1903       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
1904       - ocean and atmos. share the same horizontal grid (no interpolation).
1905       - exchanges between component and coupler is done in forward_step
1906    o new verification experiment, cpl_aim+ocn:
1907       coupled ocean - AIM atmosphere on cs32 grid.
1908    
1909    checkpoint52d_pre
1910    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
1911    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
1912    
1913    checkpoint52c_post
1914    o Fixing OPTIONS files for use of exf:
1915      - ALLOW_ECCO not needed
1916      - ECCO_CPPOPTIONS.h should not be included from
1917        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
1918        as has been the case in the past
1919      - All cal/exf related options are currently set in
1920        single header file. Should remain so until we
1921        agree on a consistent new policy.
1922    o Removed all CPP options for cal package.
1923      cal has no more CPP options.
1924    o modified STOREs in GAD_ADVECTION
1925    o corrected key comp. for passkey
1926    
1927    checkpoint52b_post
1928    o new version: "thsice" of thermodynamic sea-ice pkg:
1929     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
1930     - modify fluxes but do not change theta directly;
1931     - light cleaning of bulk_force pkg (still needed with thsice).
1932     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
1933       + output_thsice.txt to test thsice & bulk_force pkgs.
1934    o put back grid & coriolis monitor output.
1935    checkpoint52b_pre
1936    
1937    o call "do_the_model_io" at the beginning (=> dump initial state)
1938    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
1939    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
1940      (need info on NUMBER_OF_PTRACERS)
1941    o missing PTRACERS headers in some routines
1942    o default tamc.h in pkg/autodiff supposed to crash
1943      to ensure proper customization
1944    
1945    checkpoint52a_post
1946    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
1947      - moved surfaceTendencyTice from pkg/seaice to main code
1948      - subroutine FREEZE_SURFACE now limits only surface temperature
1949        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
1950        => new output.txt for global_ocean.cs32x15 & global_with_exf
1951      - keep the old version of FREEZE for backward compatibility;
1952        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
1953      - corresponding modifs for TAF directives
1954    o added surface flux output variables to TIMEAVE_STATVARS
1955    o time-averaged output for pkg/ptracers
1956    o fix problem with ECCO-related divided adjoint
1957      snapshot file was missing some ad-variables,
1958      but no warning issued by TAF
1959    
1960    checkpoint52a_pre
1961    o some bug fixes for #undef REAL4_IS_SLOW
1962    
1963    checkpoint52 = ecco_c52_e35
1964    o after testing adjoints of checkpoint51u_post
1965    
1966    checkpoint51u_post
1967    o this is the post-merge tag of the ecco-branch
1968      (needs another clean checkout and re-testing)
1969    o various natl_box_adjoint configs and results
1970      but no input fields
1971    o obcs adjoint not yet merged!
1972    o adding ECCO global 1x1 and 2x2 degree configs
1973    o updated/extended some store directives for seaice
1974    o pkg/ecco now containes ecco-specific part of cost function
1975    o top level routines the_main_loop, forward_step
1976      supersede those in model/src/
1977      previous input data.cost now in data.ecco
1978      (new namelist ecco_cost_nml)
1979    o in ctrl/ cleaned some cross-dependencies and updated CPP options
1980    
1981    checkpoint51t_post
1982    o this is the pre-merge tag of the ecco-branch
1983    
1984    checkpoint51s_post
1985    o cleanup: removed various obsolete #define-s
1986    o pkg/grdchk
1987      - renamed 'ph-grd 3' to 'grad-res'
1988      - merged from ecco-branch
1989        (remaining bug fixes for obcs gradient checks)
1990      - additional high-precision output for testreport
1991        (grep for 'precision_grdchk_result')
1992    
1993    checkpoint51r_post
1994    o cleaned up or removed CPP_OPTIONS.h files
1995    o updated results for some of the tests to reflect the new
1996      optfiles (-ieee: -O0 instead of -O3)
1997    
1998    checkpoint51q_post
1999    o cd_code:
2000      - moved cd_scheme.F -> cd_code_scheme.F
2001      - separate read_checkpoint from cd_code_ini_vars.F
2002      - separated cd_code part from write_checkpoint
2003      - updated AD_SOURCE, generated .flow
2004      - added CD_CODE_VARS.h to the_main_loop
2005      - Moving cd_code specific store dir.s to pkg/cd_code
2006    o ctrl package totally restructured
2007      - pack/unpack now optional and decoupled from
2008        xx_/adxx_ I/O
2009      - ctrl_pack/unpack cleaned
2010        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
2011      - confined inclusion of AD_CONFIG.h to where necessary.
2012    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
2013    
2014    checkpoint51p_post
2015    o create initial cd_code package
2016      - WARNING: the initialization of fields within packages
2017        is broken because INI_FIELDS (where READ_CHECKPOINT is
2018        called) is called *before* PACKAGES_INIT_VARIABLES.
2019        This seems to be backwards since
2020        1) its important to initially zero the entire field including
2021           the "halo" region
2022        2) zeroing needs to be done *before* reading pickup info
2023           and the pickup call might or might not happen in any
2024           particular run
2025      - this needs an overhaul for R2
2026    o cleanup verification/*/code/GMREDI_OPTIONS.h
2027    o cleanup testreport
2028    
2029    checkpoint51o_post
2030    o bringing AD-related verif's up to date with genmake2
2031      - carbon/
2032      - global_ocean.90x40x15/
2033      - hs.94.1x64x5/
2034      - (front_relax/ )
2035    o (more) consistent directory structure for AD-related verif.'s
2036    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
2037    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
2038    o bug fix in find_alpha.F for MDJWF:
2039      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
2040        change rho -> rho-rhoConst
2041      - replace call find_rho to find_rhonum
2042    o initialisation of rFlx extended to full array (required by TAF)
2043      and shifted to thermodynamics
2044    o removed PTRACERS.h in ptracers routine
2045    o added surfacetendencyPtr to S/R parameter list pracers_forcing
2046    o Correcting initialisations for fVerU, fVerV.
2047    o helping TAF to recognize dependency on kUp for
2048      fVerU, fVerV
2049    o Replacing delZ by delR in pkg/ctrl/
2050    checkpoint51o_pre
2051    
2052    o undid all of cp51 pending some cleanups and discussion
2053    o added the [#include "AD_CONFIG.h"] statement to all files that need
2054       it for adjoint/tl #defines
2055     o re-worked the build logic in genmake2 to support AD_CONFIG.h
2056     o removed tools/genmake since it no longer works
2057    
2058    checkpoint51n_post
2059    o modifications to make FREEZE flux visible to pkg/kpp
2060      - moved surfaceTendencyTice from pkg/seaice to main code
2061      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
2062      - subroutine FREEZE now limits only surface temperature
2063        (this means new output.txt for global_ocean.90x40x15,
2064         global_ocean.cs32x15, and global_with_exf)
2065    o added surface flux output variables to TIMEAVE_STATVARS
2066    
2067    checkpoint51n_pre
2068    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
2069    o added [#include "AD_CONFIG.h"] to all files that use the following
2070      defines:
2071      - ALLOW_ADJOINT_RUN
2072      - ALLOW_TANGENTLINEAR_RUN
2073      - ALLOW_ECCO_OPTIMIZATION
2074    
2075    checkpoint51m_post
2076    o incorporating changes to get TAMC/TAF working in genmake2
2077      - added new TAMC/TAF targets to the Makefile
2078      - various cleanups related to package handling
2079      - these changes should have no impact on the forward model
2080    
2081    checkpoint51l_post
2082    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
2083     - faster algorithm for cal_addtime.F
2084     - higher precision arithmetic, where needed
2085     - pkg/exf *startdate variables changed from calendar date to
2086       model integration time
2087    
2088    checkpoint51l_pre
2089    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
2090    o enable to apply restoring on S & T only in a latitude band.
2091    o update output (external_forcing_surf modif. change truncation errors)
2092       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
2093    
2094    checkpoint51k_post
2095    o change default to: useNHMTerms=.FALSE.
2096     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
2097       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
2098     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
2099        exp1, ideal_2D_oce
2100     - change data file of oceanic exp (leave the results unchanged for now)
2101       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
2102    o set gravitySign automatically according to the vertical coordinate used
2103      (and change sign: back to "logical" value: +1 when R increases downward)
2104    o added an include barrier to the default CPP_OPTIONS.h and
2105      removed the #include "PACKAGES_CONFIG.h" from it
2106    o fix a bug in mom_fluxform (from chk51j_post)
2107    
2108    checkpoint51j_post
2109    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
2110    o adjusted some flow directives (dynamics, thermodynamics)
2111    o added cubed-sphere case to test cost function
2112    o heckpoint_lev?_directives.h now include
2113      pkg-specific directives, whenever those are enabled.
2114    o Moving pkg-specific flow directives to corresponding pkg
2115      Moving pkg-specific differentiation list to corresponding pkg
2116      Moving pkg-specific checkpoint-lev storing to corresponding pkg
2117      ---> conventions are
2118           - pkg_ad.flow
2119           - pkg_ad_diff.list
2120           - pkg_ad_check_lev?_dir.h
2121    
2122    checkpoint51i_post
2123    o merge of the branch-genmake2
2124      - knowingly breaks the older genmake
2125      - automatic generation of all ALLOW_${PKG_NAME} defines
2126      - new testreport supersedes older testscript
2127    o large number of package inclusion and header cleanups
2128    checkpoint51i_pre
2129    
2130    o new output for adjoin of global ocean vector invariant
2131    o fix for checkpoint of thermodynamic seaice and bulk_force
2132    o Steph gchem various cleanups
2133    
2134    checkpoint 51h_pre
2135    o fixed some single quotes
2136    o modify gchem pkg to be more versatile
2137    o modifications to clean up dic pkg
2138    o add pkg/cfc
2139    
2140    checkpoint51g_post
2141    o provide links for ARPACK and ADM*TLM
2142    o start removing verification/vero/
2143    o update AD-related stuff
2144      (in particular some IF-statements in model/src/ routines)
2145    o adding to verification/global_ocean.90x40x15/ adjoint of
2146      vector invariant setup
2147    
2148    checkpoint51f_post
2149    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
2150    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
2151      of tracer Green's fucntions for ocean inversion project.
2152    
2153    checkpoint51f_pre
2154    o Added on-the-fly spatial interpolation capability
2155        "USE_EXF_INTERPOLATION" to pkg/exf.
2156      - This is a temporary Cartesian-grid hack until
2157        the super-duper ESMF coupler becomes available.
2158      - See verification/global_with_exf/README for usage example.
2159      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
2160        flags and modified pkg/seaice accordingly.
2161    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
2162        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
2163        non-local transport term.
2164    
2165    checkpoint51e_post
2166    o pkg/mom_vecinv:
2167      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
2168      - add time-ave diagnostic of vorticity advection.
2169    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
2170    o atmospheric geopotential: - include water vapor effect;
2171                                - use p^kappa in p* scaling.
2172    o land pkg: read initial state from files.
2173    o AIM : add stratospheric drag in the upper level
2174    
2175    checkpoint51d_post
2176    o change function ILNBLNK (=> last non-blank char.) to return zero
2177      (instead of the string length) when the string. char is empty
2178    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
2179    o modif's to restore TAMC compatibility
2180      - avoid "_d" constructs in PARAMETER declarations
2181      - avoid interrupting lines by comment lines
2182    o Use cluster local disks for purely local I/O
2183      vs. globally visible disks needed for ctrl stuff
2184      (merged from ecco-branch)
2185      - new active_file_loc... and mdsio_..._loc routines
2186      - affected packages: autodiff, ctrl, grdchk, mdsio
2187    
2188    checkpoint51c_post
2189    o introducing integer flag debugLevel
2190      - debLevZero: suppress all output
2191      - debLevA: standard
2192      - debLevB: equivalent to current debugMode=.TRUE.
2193    o introducing pathname variable mdsioLocalDir for mdsio
2194      that can be specified at runtime
2195      (relevant for cluster I/O to local disk)
2196    `
2197    >>>checkpoint51b_post
2198    adjoint of ptracers
2199    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
2200    o extended state in checkpoint_lev?, etc.
2201    o alternative ctrl/cost with tr1 or ptracer
2202    o new comlev1_bibj_ptracers
2203    o new ptracers.flow
2204    o made ptracers_forcing same as external_forcing_s
2205    o added verification for adjoint with ptracers
2206      - adm. grdchk fail so far
2207      - tlm. grdchk OK
2208      - checked tapelev/comlev recomputations: OK
2209    <<<checkpoint51b_pre
2210    
2211    checkpoint51a_post
2212    o added code for biogeochemistry package
2213      - new pkgs: dic, gchem
2214      - new subroutine in ptracers
2215    o modify code for biogeo packages
2216      - in model/src and pkg/ptracers
2217    
2218    checkpoint51
2219    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
2220      - autodiff, ctrl, exf, grdchk, seaice
2221      kept separate packages
2222      - cost, ecco, obcs
2223    o updating verification/internal_wave, verification/lab_sea
2224      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
2225    
2226    checkpoint50i_post
2227    o Preparing next differentiable checkpoint and sync
2228      of MAIN vs. ecco-branch
2229      - 1st step: this one is differentiable
2230      - 2nd step: next(! not this) checkpoint will have updated packages
2231                  from ecco-branch)
2232    
2233    checkpoint50h_post
2234    o new package "land": provide surface BC for AIM.
2235    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
2236    o AIM: use true log-P extrapolation for near surface temp (= as in
2237        F.Molteni paper) ; update aim.5l_cs output.
2238    o New variable in PARM03 for more flexible pickups
2239    o somewhat cleaned package initialisation sequence for
2240      ctrl/ cost/ ecco/ in packages_... routines
2241    
2242    checkpoint50g_post
2243    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
2244      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
2245      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
2246        made the default because of faster convergence than ADI
2247    
2248    checkpoint50f_post
2249    o exf totally restructured
2250      - replaced all exf_set_ routines by one generic exf_set_gen.F
2251        and made sure it's still differentiable
2252      - split exf_getffields.F into new exf_bulkformulae.F
2253      - exf_inscal_/exf_outscal_ suffixes consistent with field names
2254      - updated adjoint/makefile and relevant verif. accordingly
2255    
2256    checkpoint50f_pre
2257     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
2258          + change Evap over land. (update aim.5l_cs output)
2259     o added missing .cvsignores and made uniform across expts
2260     o changed configuration of tidal_basin_2d expt
2261     o added pkg/debug functions for tracing code in fatal crashes
2262     o tidied pkg/monitor to use MONITOR_OPTIONS.h
2263     o new fn in pkg/monitor to stop model if solution grows too big
2264     o removed lots of single quotes from comments
2265    
2266    checkpoint50e_post
2267    o make KPP work with PTRACERS
2268     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
2269       nearly a copy of kpp_transport_s
2270     - there is no analogue to SurfaceTendencyS, so I have to use
2271       gPtr(of the surface layer) instead
2272    o add a new platform SunFire+mpi (SunFire 15000) to genmake
2273    checkpoint50e_pre
2274    
2275    checkpoint50d_post
2276    o change kpp output from multiple-record state files to single-record state
2277      files analogous to write_state.F
2278    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
2279      analogous to the cg2d-related output.
2280    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
2281      so that writing to internal file fn (with length 512) fails.
2282    checkpoint50d_pre
2283    
2284    checkpoint50c_post
2285    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
2286    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
2287    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
2288    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
2289    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
2290    
2291    checkpoint50c_pre
2292    Merging from release1_p13:
2293    o bug fix for pkg/seaice dynamic solver
2294    o Added SEAICE_initialHEFF to pkg/seaice
2295    
2296    checkpoint50b_post
2297    o store u*,v* in gU,V instead of in guNm1,gvNm1
2298    o in order to put the momForcing out of the Adams-Bashforth:
2299      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
2300      to timestep.F
2301    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
2302    o re-generate output for highly sensitive test-exp:
2303       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
2304    
2305    checkpoint50b_pre
2306    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
2307    o corrected CPP option mismatch in exf_Bulk... functions for case
2308      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
2309    
2310    checkpoint50a_post
2311    o Bug fix for merging between c50 and KPP.
2312      ikey was passed from thermodynamics to kpp_calc via
2313      common block rather than being recomputed in kpp_calc,
2314      in contradiction with new key itdkey.
2315      New key ikppkey created, and tamc.h headers updated.
2316    
2317    checkpoint50
2318    - 2nd step of merge with ecco-branch:
2319      merge changes in ecco-branch back into main trunk
2320    - bug fix in find_alpha
2321    - more storing in gmredi_calc_tensor.F, kpp_routines.F
2322    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
2323    - merged some sliced AD support routines
2324    
2325    checkpoint49
2326    merged from ecco-branch:
2327    o exf:
2328      - Enable initialisation of forcing fields to constant
2329        (runtime) values.
2330      - in exf_getffields.F
2331        Reduce i-/j-loop to interior domain, discarding overlaps.
2332        That also fixes wrong TAF-key computations for key_1, key_2
2333        with bulf formulae.
2334      - exf_init.F modify #ifdef for exf_init_evap
2335      - exf_getffieldrec.F, ctrl_getrec.F
2336        The following INT-usages are not safe:
2337          fldsecs  = int(fldsecs/fldperiod)*fldperiod
2338          fldcount = int(fldsecs/fldperiod) + 1
2339        and were modified.
2340    o autodiff: checkpoint_lev...
2341      - updated storing for bulk formulae (some arrays were missing)
2342      - added state for seaice package
2343      - synchronized with main branch
2344    o DIVA:
2345      Modif.s in
2346      - the_main_loop.F
2347      - the_model_main.F
2348      and added cost_final_restore.F cost_final_store.F
2349      o With these changes, it is possible to fully separate
2350        the first forward run to compute the cost function (mdthe_main_loop)
2351        and adjoint runs over individual DIVA intervals (adthe_main_loop)
2352        into separate model executions.
2353        This enables better tuning of DIVA to given queue sizes.
2354      o Loss of cost function value in consecutive DIVA runs is
2355        fixed by storing to 'costfinal' file.
2356      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
2357        beginning/end of adjoint integration is accounted for.
2358      The current changes apply to TAF-1.4.26.
2359      TAF has one remaining bug, requiring one manual change
2360      (see MITgcm manual).
2361    o cal: synchronized between MAIN and ecco-branch
2362    
2363    checkpoint48i_post
2364    o Changes to restore differentiability of code w.r.t. previous tag
2365      (mostly adding new routines to make list and replacing
2366      pressure by totPhiHyd).
2367    o Updated and merged grdchk package
2368      - has both ADM and TLM checks
2369      - works for single- and multi-proc.
2370      - output cleaned
2371      - worked successfully for parallel DIVA
2372    o genmake:
2373      - Adding -platform=SP4
2374      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
2375    o Modif. for DIVA:
2376      ctrl_unpack should not be called in intermediate DIVA interval.
2377      (similar thing would apply for active files such as
2378      tbar, sbar, psbar, which should not be reinitialised;
2379      only relevant for ecco-branch)
2380    
2381    checkpoint48h_post
2382    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
2383    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
2384    o Added SEAICE_initialHEFF to pkg/seaice
2385    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
2386    
2387    checkpoint48g_post
2388    --- EOS:
2389    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
2390      store total Potential in totPhyHyd for diagnostics & EOS.
2391    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
2392    --- Pressure/geopotential gradient:
2393    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
2394    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
2395      ( changes results of global_ocean_pressure )
2396    o NLFS + z-coord.: add eta*Rho' contribution.
2397    o accurate phiHyd when using interface-W at the middle between 2 centers
2398     ( changes results of ideal_2D_oce )
2399    o includes r* 2nd term in potential gradient.
2400    
2401    checkpoint48f_post
2402    Merging from release1_p12:
2403    o Modifications for using pkg/exf with pkg/seaice
2404      - improved description of the various forcing configurations
2405      - added basic radiation bulk formulae to pkg/exf
2406      - units/sign fix for evap computation in exf_getffields.F
2407      - updated verification/global_with_exf/results/output.txt
2408    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
2409      (SBO) core products, including oceanic mass, center-of-mass,
2410      angular, and bottom pressure (see pkg/sbo/README.sbo).
2411    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
2412      to avoid negative values in shallow regions.
2413      - updated verification/natl_box/results/output.txt
2414      - updated verification/lab_sea/results/output.txt
2415    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
2416    o Added useSingleCpuIO option (see PARAMS.h).
2417    o Updated useSingleCpuIO option in mdsio_writefield.F to
2418      work with multi-field files, e.g., for single-file pickup.
2419    o pkg/seaice:
2420      - bug fix in growth.F: QNET for no shortwave case
2421      - added HeffFile for specifying initial sea-ice thickness
2422      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
2423    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
2424      kpp_transport_t.F, forward_step.F, and the_main_loop.F
2425    o pkg/seaice:
2426      - adjoint-friendly modifications
2427      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
2428    
2429    checkpoint48e_post
2430    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
2431    o dynamics: change definition of computational domain & adapt mom_fluxform
2432      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
2433    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
2434        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
2435        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
2436        global_ocean.90x40x15 global_with_exf global_ocean_pressure
2437        inverted_barometer solid-body.cs-32x32x1
2438      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
2439    
2440    checkpoint48d_post
2441    o in preparation for r*:
2442     a) use pre-computed gradient of hydrostatic potential:
2443        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
2444     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
2445        => affects results of glob_oce_pressure (different truncation error)  
2446      update output.txt of ideal_2D_oce & global_ocean_pressure
2447    
2448    checkpoint48d_pre
2449    o in preparation for r*:
2450      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
2451      pass the 2 comp. of the grad. as arguments to momentum S/R.
2452      but for the moment, only used if it does not change the results.
2453    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
2454    
2455    checkpoint48c_post
2456    Modifications in treatment of initial flux forcing controls
2457    to avoid extra storing of flux fields.
2458    
2459    checkpoint48c_pre
2460    o Added tidal_basin_2d experiment (currently 1D!)
2461    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
2462    
2463    checkpoint48b_post
2464    o r* coordinate added in #ifdef NONLIN_FRSURF block.
2465     (modification to pressure gradient not yet implemented)
2466    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
2467      (for U & V) that are used for vertical advection of momentum.
2468    
2469    checkpoint48a_post
2470    o In preparation for r*, use temp. array to compute vertical transport
2471       in flux-form momentum pkg. => change results of few test-exp.
2472      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
2473                        lab_sea, natl_box & plume_on_slope
2474    
2475    checkpoint48
2476    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
2477    
2478    checkpoint47j_post
2479    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
2480    o moved adexch from forward_step to addummy_in_stepping
2481    o added exch in ctrl_map_...
2482    o aveFreq.=0. at end of cost_final to avoid overwrite in
2483      reverse checkpointing loop
2484    o Yet more changes in gmredi:
2485      * adgmredi_calc_tensor
2486        avoiding all recomputation of gmredi_slope_limit
2487      * adgmredi_x/y/rtransport
2488        added flag for excessive storing to avoid recomp. of
2489        u/v/rtans, dTdx/y/z
2490        -> this is not really necessary and very memory-consuming
2491      * adgmredi_slope_psi:
2492        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
2493      * gmredi_slope_limit
2494        re-activated full calculation of taperfct for case 'ac02'
2495    o updating verification/ adjoints of carbon, global_ocean.90x40x15
2496    
2497    checkpoint47i_post
2498    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
2499    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
2500      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
2501    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
2502    o gmredi: fix few bugs.
2503    
2504    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
2505    This will be a good checkpoint to plug into the ecco-branch.
2506    o few modif.'s to get latest version adjointed
2507      (mainly kick out code in ini_linear_phisurf)
2508    o modif's to run adjoint with exactConserv
2509    o case GM_BOLUS_ADVEC should be cleaned
2510      S/R gmredi_slope_psi should be cleaned
2511    o verification/carbon now has exactConserv=.TRUE.
2512    
2513    checkpoint47g_post
2514    o time-average AIM output: becomes independent from statvars time-average
2515      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
2516    o After TAF bug fix:
2517      Tested adjoint of gmredi package.
2518      Tests were done with checkpoint47 rather than with latest
2519      checkpoint47f_post since the latter is broken for the adjoint
2520      verification/carbon/ contains both ADM and TLM gradient checks.
2521    Here they are, before they get changed/lost/stolen.
2522    Mostly modif.'s to fix numerical sensitivities.
2523    Gradient checks OK for
2524    - GM_taper_scheme:
2525      * clipping
2526      * ac02
2527      * linear
2528      * glw91
2529      * dm95
2530      * ldd97
2531    - GMREDI_OPTIONS:
2532      * GM_VISBECK_VARIABLE_K
2533      * GM_NON_UNITY_DIAGONAL
2534      * GM_EXTRA_DIAGONAL
2535      * GM_BOLUS_ADVEC
2536    in conjunction with data.gmredi parameters to be checked in
2537    in a few minutes under verification/carbon/code/
2538    
2539    checkpoint47f_post
2540    Merging from release1_p10:
2541    o modifications for using pkg/exf with pkg/seaice
2542      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
2543        and SEAICE_EXTERNAL_FLUXES
2544      - pkg/exf CPP options EXF_READ_EVAP and
2545        EXF_NO_BULK_COMPUTATIONS
2546      - usage examples are Experiments 8 and 9 in
2547        verification/lab_sea/README
2548      - verification/lab_sea default experiment now uses
2549        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
2550    
2551    checkpoint47e_post
2552    o created a tag prior to creating a branch
2553    
2554    checkpoint47d_post
2555    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
2556      at the bottom boundary had an erroneous half slip boundary condition
2557    o added bottom drag and no slip boundary condition capabilities to
2558      oceanic pressure coordinates code
2559    o added new verification experiment global_ocean_pressure, this experiment is
2560      also described in the tutorial section of the manual
2561    checkpoint47d_pre
2562    
2563    checkpoint47c_post
2564    o Added a verification experiment for a global cubed-sphere ocean run
2565      -  verification/global_ocean.cubed32x32x30
2566      -  uses pkg/therm_seaice and pkg/bulk_forcing
2567    
2568    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
2569    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
2570      when using P-coordinate; only implemented for atmospheric config.
2571    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
2572      NOTES: requires option NONLIN_FRSURF to be "#define".
2573    o update advect_xz/results/output.txt (left from checkpoint44g_post)
2574    
2575    checkpoint47b_post
2576    Merging from release1_p9:
2577    o pkg/seaice
2578      - removed GOTO's and added taf directives
2579      - double precision constants to reduce the g77 (Linux)
2580        to F77 (SGI) differences reported in release1_p8
2581    o tools/genmake
2582      - added SGI options
2583    o verification/testscript
2584      - updated to that of checkpoint47a_post
2585    o verification/global_ocean.90x40x15/input/eedata
2586      - modified for SGI f77 compatibility
2587    o verification/lab_sea
2588      - added description of sea-ice model
2589      - added missing matlab routines
2590      - added test of thermodynamics parallelization
2591    
2592    checkpoint47a_post
2593    o new pkg: aim_v23
2594     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
2595       for now, keep the same surface forcing as before.
2596     - Part-Cell implemented into AIM; check that Heat & Water are conserved
2597     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
2598     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
2599    o add diagnostic of surface correction term in monitor output
2600    
2601    o bulk_force and therm_seaice
2602    - Two packages:  bulk_force (Bulk forcing)
2603      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
2604    - Earlier integration from Stephaine Dutkiewicz
2605      and Patrick Heimbach.
2606    - Two ifdef statements for compile time,
2607       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
2608    
2609    checkpoint47
2610    differentiable version of checkpoint46n_post
2611    o bug fix in quasihydrostaticterms
2612    o * "clean" adjoint code (in terms of extensive recomputations)
2613        can now be obtained for all GMREDI options (i.e. for
2614        - GM_VISBECK_VARIABLE_K
2615        - GM_NON_UNITY_DIAGONAL
2616        - GM_EXTRA_DIAGONAL
2617        - GM_BOLUS_ADVEC )
2618      * However, wrong gradient check problem remains unsolved.
2619      * New CPP options have been introduced for different
2620        tapering schemes
2621    o external_fields_load now part of differentiation list
2622    o pressure needs multiple storing;
2623      would be nice to have store_pressure at beginning or
2624      end of forward_step, e.g. by having phiHyd global (5-dim.)
2625      (NB: pressure is needed for certain cases in find_rho,
2626      which is also invoked through convective_adjustment).
2627    o recomputations in find_rho for cases
2628     'JMD95'/'UNESCO' or 'MDJWF' are OK.
2629    o #define ATMOSPHERIC_LOADING should be differentiable
2630    o ini_forcing shifted to begining of initialise_varia
2631    o Incorporating QNVS line search routines into MITgcm
2632      (this is separate code, and therefore not under pkg)
2633      lsopt/, optim/
2634    o Updated verification/carbon/
2635      - #define GM_VISBECK_VARIABLE_K
2636      - GM_taper_scheme    = 'ldd97'    
2637    
2638    checkpoint46n_post
2639    Merging from release1_p8:
2640    o verification/natl_box:
2641      updating new external_fields_load routine
2642    o New package: pkg/seaice
2643      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
2644      The sea-ice code is based on Hibler (1979-1980).
2645      Two sea-ice dynamic solvers, ADI and LSR, are included.
2646      In addition to computing prognostic sea-ice variables and diagnosing
2647      the forcing/external data fields that drive the ocean model,
2648      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
2649      The implied surface heat flux is then stored in variable
2650      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
2651      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
2652      non-local transport term.  Because this call precedes model
2653      thermodynamics, temperature under sea-ice may not be "exactly" at
2654      the freezing point by the time theta is dumped or time-averaged.
2655      N.B.: fairly large differences in accuracy occur across
2656            different platforms/compilers; comparison between
2657            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
2658            generated output gives:
2659       T           S           U           V
2660      C D M    c        m  s        m  s        m  s        m  s
2661      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
2662      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
2663      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
2664    
2665      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
2666    o GAD:
2667      - generated new common blocks to account for call of
2668        same gad routines with differing traceridentities
2669        (needed to modify tracerIdentity indices in GAD.h)
2670      - generated separate common blocks for case useCubedSphereExchange
2671        (Department of Futurology)
2672      - parameter lists to gmredi_?transport: added tracerIdentity
2673      - added new key indices to tamc.h
2674    o external_fields_load:
2675      - added this routine to TAF list
2676      - needed to make some common blocks global and additional storing
2677        along the same lines as exf package (checkpoint_lev?_directives.h)
2678    o exf:
2679      updated external forcing package
2680      - bug fixes carried over from ecco-branch
2681        (missing OBCS_OPTIONS.h in two routines)
2682      - enable easy to use "no forcing".
2683      - added exf I/O for atmospheric loading
2684      - added exf I/O for runoff data
2685      - transfered scaling between exf <-> MITgcm to exf namelist
2686    o Adding new verification experiment global_with_exf.
2687      This verification experiment is almost identical to the
2688      global_ocean.90x40x15 experiment, except that it uses
2689      the exf (and cal) package instead of the
2690      external_fields_load routine (cf README file).
2691    
2692    checkpoint46m_post
2693    o modified testscript to return -- when there are no lines of "%MON" output
2694    o added new flag "quasiHydrostatic" for QH mode
2695      and new routine quasihydrostaticterms()
2696    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
2697      New routine: mom_u_coriolis_nh()
2698    o fixed sign of non-hydrostatic metric terms in u and v equations.
2699      Depend on correct sign of gravitySign.
2700    o added work.pc* to .cvsignore in aim directories using ifc
2701    o introduced flag for controllin non-hydrostatic metric terms
2702    o removed gravitySign from PARM04
2703    o switched to g77/ifc from pgf77 in aim experiments
2704    
2705    checkpoint46l_post
2706    o made convective adjustment work with pressure coordinates:
2707     - changed the direction of k-loop in convective_adjustment.F for the
2708       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
2709     - adjusted the reference pressure k-index in convective_adjustment.F
2710     - adjusted the convection condition in convect.F (in analogy to
2711       calc_ivdc.F)
2712     - convective_adjustment no longer computes anything on the halos
2713     - removed the warnings about negative salinity from find_rho.F and
2714       find_alpha.F; instead the new routine look_for_neg_salinity, called
2715       at the beginning of find_rho, find_alpha, and find_beta, does a
2716       check of the entire slice, if CPP-option
2717       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
2718    checkpoint46l_pre
2719    
2720    checkpoint46k_post
2721    o fixed the verification/global_ocean.90x40x15 experiment:
2722     - new bathymetry (the world according to A., JMC, and M.)
2723     - new initial fields and forcing fields (*.bin files)
2724     - new POLY3.COEFFS (for the next release one should switch to a full
2725       equation of state: JMD95P or MDJWF)
2726     - fixed several errors and redundancies in the data file
2727     - experiment uses looped cells
2728     - added matlab directory with diagnostic scripts for plotting of output
2729    
2730    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
2731     - read AIM physics parameters from a file (data.aimphys)
2732     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
2733    
2734    checkpoint46j_post
2735    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
2736    o move wVel computation at the end of the time step, in S/R integr_continuity
2737    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
2738    o update timeave pkg for wVel diagnostic.
2739    checkpoint46j_pre
2740    
2741    checkpoint46i_post
2742    o Clean up AIM package (and keep the results unchanged):
2743      include CPP_OPTION and use IMPLICT NONE in all routines ;
2744      declare all the variables _RL ; use _d 0 for all numerical constants.
2745      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
2746    
2747    checkpoint46h_post
2748    o cleaned up the use of rhoNil and rhoConst.
2749      - rhoNil should only appear in the LINEAR equation of state, everywhere
2750        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
2751        and the dynamical equations are all divided by rhoConst
2752    o introduced new parameter rhoConstFresh, a reference density of fresh
2753      water, to remove the fresh water flux's dependence on rhoNil. The default
2754      value is 999.8 kg/m^3
2755    o cleanup up external_forcing.F and external_forcing_surf.F
2756      - can now be used by both OCEANIC and OCEANICP
2757    checkpoint46h_pre
2758    
2759     Added code to convert surface volume flux (fresh water) into
2760     a mass flux when using P coordinates in the ocean (OCEANICP).
2761     Note: It assumes you have set rho0=rhoConst=density of fresh water.
2762    
2763    checkpoint46g_post
2764    o Include a new diagnostic variable phiHydLow for the ocean model
2765      - in z-coordinates, it is the bottom pressure anomaly
2766      - in p-coordinates, it is the sea surface elevation
2767      - in both cases, these variable have global drift, reflecting the mass
2768        drift in z-coordinates and the volume drift in p-coordinates
2769      - included time averaging for phiHydLow, be aware of the drift!
2770    o depth-dependent computation of Bo_surf for pressure coordinates
2771      in the ocean (buoyancyRelation='OCEANICP')
2772      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
2773        Theta, Salinity, and Pressure in the parameter list. This routine is
2774        presently contained in find_rho.F. This routine does not give the
2775        correct density for 'POLY3', which would be a z-dependent reference
2776        density.
2777    o cleaned up find_rho
2778      - removed obsolete 'eqn' from the parameter list.
2779    o added two new verification experiments: gop and goz
2780      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
2781    checkpoint46g_pre
2782    
2783    checkpoint46f_post
2784    o Enable tangent linear (forward mode) gradient checks:
2785      - extended active file handling to g_... files
2786      - added TANGENT_SIMULATION to theSimulationMode
2787      - extended grdchk package accordingly
2788    o added tangent linear setup in verification/carbon/code_ftl
2789    o added adjoint setup in verification/front_relax/code_ad
2790    
2791    checkpoint46e_post
2792    o Added new equation of state -> MDJWF
2793      - EOS of McDougall et al., 2002, JAOT, submitted
2794      - caveat: the equation of state is only valid for a smaller (more
2795        realistic?) range of values than JMD95P/Z and UNESCO
2796      - added masks to the calculation of pressure in store_pressure
2797      - added more check values for density in check_eos (ini_eos.F), some of
2798        the old check values are out of the range of the MDJWF-eos, so don't
2799        expect perfect matches for those
2800    checkpoint46e_pre
2801    
2802    checkpoint46d_post
2803    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
2804      'OCEANICP', also initialised field pressure correctly in ini_eos in the
2805      case of pressure coordinates. eosType='JMD95Z' in
2806      combination with buoyancyRelation='OCEANICP' now causes an error.
2807    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
2808      in find_alpha/beta.
2809    checkpoint46d_pre
2810    
2811    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
2812      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
2813    
2814    checkpoint46c_post
2815    o Changes necessary for ocean in p-coordinates
2816     -  Added new buoyancy relation = 'OCEANICP'
2817     -  Added new parameters = gravitySign (this used to be contained inside
2818        the factor dRdZ which I added when we first switched to R coordinates).
2819     X GM/Redi is not compatible (yet)
2820     X bottom drag and no-slip need to be debugged.
2821    checkpoint46c_pre
2822    
2823    checkpoint46b_post
2824    o Added new equation of state -> JMD95Z and JMD95P
2825      - EOS of Jackett and McDougall, 1995, JAOT
2826      - moved all EOS parameters into EOS.h
2827      - new routines ini_eos.F, store_pressure.F
2828    o Added UNESCO EOS, but not recommended because it requires
2829      in-situ temperature (see JMD95)
2830    o Modified formatting for knudsen2.f in utils/knudsen2 and added
2831      unesco.f to be used with POLY3
2832    checkpoint46b_pre
2833    
2834    checkpoint46a_post
2835    o Added (atmospheric) pressure loading
2836      - new field in FFIELDS.h, etc...
2837      - new cpp flag ATMOSPHERIC_LOADING
2838    o Changed hFacC to _hFacC in calc_phi_hyd.F
2839    o Added SHORTWAVE_HEATING to some files for consistency
2840    checkpoint46a_pre
2841    
2842    checkpoint46
2843    further merges from release1_p5
2844    o new ctrl package
2845      - adopted from ECCO environment to enable optimization
2846      - added Eliassen Palm fluxes to controls
2847    o added Eliassen Palm flux controls to gradient check package
2848    o cost package
2849      - Compatible with new ctrl package
2850      - added Eliassen Palm cost hooks
2851      - modif's of existing cost functions
2852    o Adjoint-related bug fixes in kpp:
2853      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
2854      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
2855    o autodiff package
2856      - flow directives:
2857        + new for S/R do_the_model_io
2858        + enhanced for S/R checkpoint
2859        + new gmredi.flow
2860      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
2861        disable adcommon.h/g_common.h by default.
2862      - fixed problem for adjoint of global_max
2863    o modified verification/carbon/
2864    o New setup for adjoint of global_ocean
2865    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
2866    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
2867    o incorporated hooks for sponge layer code (external_forcing.F)
2868    
2869    checkpoint45d_post
2870    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
2871    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
2872      (affects plume_on_slope "cg2d" output)
2873    o add new parameter deltaTfreesurf for free-surface time stepping
2874    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
2875    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
2876    o change phiMin in exp1 (to agree with documentation)
2877    o add new flags:
2878     - T,S forcing inside/outside Adams-Bashforth
2879     - turn off temp,salt advection and/or forcing
2880     - for each tracer, define internal flag for multiDimAdvection & A-B
2881    o monitor: change definition of KE to check conservation of Energy
2882    
2883    checkpoint45c_post
2884    o Removed f90 comments ("!")
2885    o Modified initialisations to enable exf package for MITgcm
2886      (without invoking ECCO_PACKAGE).
2887    o modifications to gradient check package (Martin Losch)
2888      - enable centered differences
2889      - modified format of standard output
2890    
2891    checkpoint45b_post
2892    o cleaned exchange calls in cg2d
2893    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
2894    o included CPP option SINGLE_LAYER_MODE in thermodynamics
2895      to configure barotropic setup (Martin Losch)
2896    o moved some initialisations within bi,bj loop in dynamics
2897      (TAF flow dependency)
2898    o in initialise_varia, moved call packages_init_variables
2899      before convective_adjustment_init
2900      (corresponding adjustment of TAF tape initialisation).
2901    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
2902    
2903    checkpoint45a_post
2904    o compute Rho over the whole domain (extend iMin,jMin indices)
2905    o specific exchange for X-slice domain (case Ny=1)
2906    o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
2907    o solve_for_pressure : set cg2d_x to zero where OBCS are applied
2908    
2909    checkpoint44h_post = checkpoint45
2910    o Fix to restore differentiability:
2911      place at which packages_init_variables is called in
2912      initialise_varia is crucial for reverse control flow.
2913    o modifications in GMRedi to enable stable adjoint
2914      (corresponding modif's in thermodynamics, dynamics)
2915    o added missing hook for sponge layer code in external_forcing
2916    o modified test cost functions
2917    o storing in gad_advection (plus removal of write(0,*)!
2918    o missing headers TR1.h added in convective_adjustment routines
2919    o errorMessageUnit set non-equal zero in eeboot
2920      (conflict on some platforms, e.g. IBM SP3)
2921    o modified carbon verif.
2922    
2923    checkpoint44h_pre
2924    o vertical grid option: allow to put the Interface at the middle between
2925      2 cell-centers ; replace delZ in pkg/kpp by drF.
2926    o GM Advective form: Tracers are advected using the residual transport (=
2927      Euler+GM-bolus); set param GM_AdvSeparate=T to return to previous form.
2928    
2929    checkpoint44g_post
2930    o fix surface correction term in multiDimAdvection (affects plume_on_slope
2931      results) ; ifdef missing in thermodynamics.F
2932    
2933    checkpoint44f_pre,checkpoint44f_post
2934    o added PTRACERS package
2935      This allows an arbitrary number of passive tracers to be integrated
2936      forward simultaneously with the dynamicaly model.
2937      + Implemented so far:
2938        - basic forward algorithm (time-stepping, advection, diffusion, convection)
2939        - I/O and checkpointing
2940        - GM/Redi  *but*  using the GM/Redi coefficient of Salt
2941      + Not implemented so far:
2942        - KPP
2943        - OBCS
2944      + No specific example supplied (yet) but global_ocean.90x40x15 has the
2945        necessary data.ptracer file. Simply use -enable=ptracers and uncomment
2946        line in data.pkg.
2947      + This package is disabled by default since it increases storage.
2948    
2949    
2950    o testscript: added -cleanup option
2951    o Shap_filt: a) new shap_filt S/R to use no-slip BC with S2 filter
2952                 b) enable to filter 2D fields.
2953    
2954    checkpoint44e_pre,post
2955    o re-wrote convective adjustment to use pre-calculated weights
2956      Affects: model/src/convective_adjustment.F, convective_adjustment_ini.F
2957      Adds:    model/src/convective_weights.F, convectively_mixtracer.F
2958      Original calls to convect() still in place.
2959    
2960    chkpt44d_pre,post
2961    o added missing EXCLUDE_MONITOR flags
2962    o changed "e" to "_d" in gmredi_slope_limit, gmredi_slope_psi
2963      (incompatible typ in MIN/MAX expressions caused problems
2964      on IBM SP3)
2965    o in genmake added variable MAKEDEPEND
2966      plus resetting for case SunOS
2967    o added timer_stats.c routine for IBM SP3
2968    o removed variables in dynamics
2969    !!! I forgot to create tag chkpt44d_pre !!!
2970    !!! But chkpt44d_pre = chkpt44c_post    !!!
2971    
2972    o real fresh water flux implemented with non-linear free-surface.
2973    
2974    chkpt44c_pre,post
2975    o few fix (mask in shap_s2, EmPmR in external_field_load,
2976      USE_NATURAL_BCS in solve_for_P);
2977    o add arguments myIter & myTime to S/R obcs_calc & solve_for_P
2978    
2979    checkpoint44b_pre/_post
2980    o merge of relevant stuff from the ecco-branch:
2981      - genmake: removed $S64 overwrite for case SunOS
2982      - pkg/exf: update and corrections for field swapping and obcs
2983      - pkg/ecco: parameter lists for the_model_main, the_main_loop
2984                  harmonized between ECCO and MITgcm
2985      - pkg/autodiff: added flow directives for obcs, mdsio_gl_slice
2986                      updated checkpointing_lev... lists for obcs
2987      - model/src: minor changes in forward_step, plot_field
2988                   added directive for divided adjoint in the_main_loop
2989      - pkg/mdsio: added mdsio_gl_slice
2990    
2991    o check parameters & config (chkpt44a_pre,post)
2992    o OBC and NonLin_FrSurf.
2993    
2994    checkpoint44
2995    o fix bug in mom_vi_del2uv
2996    o select when filters are applied ; add options to zonal_filter (data.zonfilt)
2997    o gmredi: fix Pb in the adiabatic form ; add options (.e.g. Bolus advection)
2998    o update AIM experiments (NCEP input files)
2999    o improve and extend diagnostics (Monitor, TimeAve with NonLin-FrSurf)
3000    o added some stuff for AD
3001    
3002    checkpoint43
3003    o added two new advection tests
3004    o added global 4x4 degree ocean test
3005    o added test of H&S94 with free surface on cube
3006    o some final mods for gradient check, adjoint,...
3007    
3008    checkpoint42
3009      Fixed AD-related problems:
3010    o Store directives up-to-date with re-arranged Adams-Bashforth
3011      (mainly thermodynamics.F)
3012    o New store directives for multi-dim. advection schemes
3013      * new CPP flag ALLOW_MULTI_DIM_ADVECTION
3014      * new common block and key passkey
3015      (mainly gad_advection.F)
3016    o Modified store directives for split of dynamics/thermodynamics
3017      for the case ALLOW_KPP
3018    o Cleaned argument list for timestep_tracer.F
3019    
3020    checkpoint41
3021    o re-formatted/added comments in prologues of key subroutines
3022      to work with protex
3023    
3024    checkpoint40
3025    o moved calc_gs, calc_gt and calc_tr1 back to model/src
3026    o added FLT (floats) package from Arne along with demo. experiment
3027    o re-arranged Adams-Bashforth scheme for tracers to allow easier
3028      implementation of forward-in-time forcing terms
3029    o more mods for non-linear free-surface including new variable
3030    o modified multi-dim method to work on cube
3031    o bug fix in KPP (from DM)
3032    
3033    checkpoint40pre9
3034    o added DST advection schemes
3035    o fix MPI bug on SGI's
3036    o modifications for non-linear free-surface
3037    o fixed conditionals for fixed flow/passive tracer only mode
3038    o added tension/strain form of stress tensor
3039    o changes to commenting of arguments for TAF/TAMC
3040    o added/updated many matlab scripts
3041    o added multi-dimensional advection method for tracers
3042      
3043    checkpoint40pre8
3044    o new package rw/
3045      Added method for dumping intermediate local arrays:
3046      mdsio_writetile - same as mdsio_writefield except works from inside
3047                        bi,bj loop
3048      mdsio_writelocal - same as mdsio_writetile except works for local
3049                         arrays
3050      write_local_r? - higher-level wrapper for mdsio_writelocal
3051      Controlled by diagFreq. Defaults to zero (ie. no dumps)
3052      Example given at end of mom_vecinv.F that dumps some local arrays.
3053    o replaced calc_mom_rhs.F by mom_fluxform.F/mom_vecinc.F to
3054      control flux-form versus vector invariant code.
3055      Switch is runtime flag vectorInvariantMomentum (defaults to false)
3056      or genmake -DISABLE ...
3057    o TAMC-related update to cope with mom_fluxform.F/mom_vecinc.F
3058      (additional storing is now needed for case vecinv;
3059      currently nothing implemented to switch this storing off
3060      in case fluxform is used since no CPP flag available).
3061    
3062    checkpoint40pre7
3063    o bug fix in dynamics.F
3064      calc_viscosity called before k=1,Nr loop.
3065    o added some #ifdef's ALLOW_PASSIVE_TRACER
3066    o cleaned initialisations in ctrl_map_ini
3067      related to TAF
3068    
3069    checkpoint40pre6
3070    o split dynamics into thermodynamics & dynamics
3071    o corresponding split of calc_diffusivity into
3072      calc_diffusivity, calc_viscosity
3073      (kpp_calc_diff, kpp_calc_visc).
3074    o Added diffkr, kapgm to control variables
3075    o bug fix in gmredi_slope_limit for ldd97
3076    
3077    checkpoint40pre5
3078    o proper initialization of Adams-Bashforth time stepping
3079      + uses forward step for very first step of model (iter=0)
3080    o re-generated *all* output since almost all output is modified by this
3081      change (sorry but we've been putting this one off for about 2 years)
3082      + natl_box, aim.5l_Equatorial_Channel and aim.5l_zon-ave were
3083        *not* regenerated since they are already out of date and I don't
3084        want to create the impression that they are suddenly working.
3085    o removed KAP stuff for DEC's
3086    o modified/added many .cvsignore files in */code and */input
3087    o added new expt "solid-body.cs-32x32x1"
3088      + this uses an alternative form of ini_curvilinear_grid.F which
3089        is not necessarily any better than the current one...
3090    
3091    checkpoint40pre4
3092    o added re-initialisations of utrans,vtrans,rtrans in
3093      calc_common_factors which are crucial for TAF.
3094    o extended iMin,jMin range for calc_common_factors,
3095      calc_diffusivity
3096    o added option ALLOW_PASSIVE_TRACER
3097    o a few minor updates and fixes
3098    
3099    checkpoint40pre3
3100    o created calc_gtr1.F for gad package
3101    o split the_main_loop and re-introduced forward_step
3102    o some recomputations of nIter0 for TAMC
3103    
3104    checkpoint40pre2
3105    o Updated to latest branch of AJA, JMC
3106    o Added gradient check package
3107    o Added routines for passive tracer handling
3108    o Added carbon sequestration sensitivity experiment
3109    
3110    checkpoint39
3111     o Modifications and fixes to support TAMC
3112       (mainly missing or wrong directives)
3113     o Corrected common blocks when fooling TAMC to produce adjoint I/O
3114       in addummy_in_stepping
3115     o Updated verification/vero/ (bug fixes in code/, correct pickups in input/)
3116     o Enabled "sliced" (xz-,yz-) exchanges, needed for obcs.
3117     o Included following packages:
3118       cal: calendar
3119       exf: external forcing
3120       ecco: essential routines to control use of cal, exf
3121             (NB: this is not the full ECCO environment)
3122     o disabled some packages by default in genmake
3123    
3124    checkpoint38
3125     o see notes_c37_adj.txt
3126     o corrected wrong layer index in external_forcing_t
3127     o replaced the_main_loop/forward_step by the_main_loop
3128     o removed forceoutput from write_state
3129       (replaced criteria for initial/final state)
3130     o added runtime flag for pre-C35 pickups: usePickupBeforeC35
3131    
3132    checkpoint37
3133     o mdsio.F routine split and packaged in pkg/mdsio
3134       (mdsio.F and mdsio_gl.F still exist in eesupp/src but are not
3135        used unless genmake -disable=mdsio)
3136     o allow a more precise surface-geopotential gradient for the atmosphere
3137       taking into account the change in space of Alpha (=1/rho) at the surface.
3138     o variable "etaN" (replace cg2d_x) is the surface R-anomaly [r unit]
3139       (ocean: sea surface height [m] / atmos: surface pressure anomaly [Pa])
3140     o Change units: Phi_Hydrostatic (=phiHyd), Phi_Surface(=cg2d_x) and
3141       Phi_NonHydrostatic (=cg3d_x), all have now the dimension of a potential
3142       [m2/s2] (pressure/rhoConst in the ocean ; Geo-Potential in the atmosphere).
3143     o Time-Average diagnostics defined as a pseudo package "timeave".
3144     o pickup files : old pickup (before c35) did not work with new code (c35
3145       and after) unless activating 2 commented lines in initialise-varia.
3146     o Non-Hydrostatic pickup file Pb fixed.
3147     o bug with Rigid-lid version (since c35) fixed.  
3148    
3149    checkpoint36
3150     o implement Crank-Nickelson barotropic time-stepping
3151     o recover Time-Average diagnostics
3152     o fix Pb in checkpoint (PR#19)
3153     o AIM become a standard package ; clean unused CPP_kees
3154    
3155    checkpoint35
3156     o subtantial rewrite of dynamics.f
3157     o allows staggered time-stepping
3158     o packaged obcs, aim (Atmospheric Physics), zonal_filt, shap_filt
3159     o added bottom drag (linear + quadratic)
3160    
3161    checkpoint34
3162     o Modified exchange routines for correct reverse simulation.
3163     o Added verification output to comply with bug fix in impldiff.F
3164       as of c33 (exp2, natl_box).
3165     o Corrected store directives in dynamics.F
3166     o Corrected array boundaries in impldiff.F
3167     o Corrected array dimensions in gmredi.
3168       Added temporary scalars to avoid storage by TAMC (gmredi, kpp).
3169     o Added routine GLOBAL_SUM_INT to global_sum.F
3170     o Added mdsio_gl.F for ECCO purposes.
3171    
3172  checkpoint33  checkpoint33
3173   o Fixed bug in lower BC in impldiff.F   o Fixed bug in lower BC in impldiff.F
3174   o Fixed confusion about units of forcing arrays in FFIELDS.h   o Fixed confusion about units of forcing arrays in FFIELDS.h

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