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revision 1.75 by jmc, Thu Jun 20 23:52:03 2002 UTC revision 1.545 by edhill, Sun Sep 11 04:37:01 2005 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 mnc-ify pkg/aim snapshot vars
8    o mnc-ify pkg/land as requested by Daniel
9    o various changes to mnc including:
10      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
11      - output can now be grouped so that all files within a group
12          change the ITER portion of their names in lock-step together
13      - can now read ("global") PER-FACE (in addition to PER-TILE) files
14          and works with both EXCH1 and EXCH2 (but needs more testing)
15      - writing works for all verification test cases w/ g77 on Linux
16    
17    checkpoint57r_post
18    o make MNC variable initialization happen earlier
19    o add diagnostics for (almost) each term of the momentum Eq.
20    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
21    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
22    o remove MINIMAL_TAVE_OUTPUT option ;
23      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
24    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
25      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
26    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
27    o add time-dependent SST, SSS control
28    o cost terms in ecco/ modularized (new cost_generic.F)
29    o cost_averages routines are modularized (new cost_averagesgeneric.F)
30    o new infrastructure for seaice model vs. obs misfits in seaice/
31      * driver from the_main_loop.F is seaice_cost_driver.F
32      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
33      * gradient check in Exp. 6a of natl_box_adjoint/
34    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
35      (see README file)
36    
37    checkpoint57q_post
38    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
39    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
40      - bug was reported by Jean-Michel and Ian Fenty
41    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
42      update exp. cpl_aim+ocn output.
43    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
44      Needed for high-res. runs with large global files
45      to be able to limit tapelev size
46    o Changed some tests for adjoint:
47      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
48      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
49      * global_ocean.90x40x15/ back to default 3-level checkpointing
50    o Modifications to enable scripted COMMON to MODULE conversion
51      * verification/OpenAD/code/ has necessary scripts and description;
52      * converts, compiles and runs successfully;
53    
54    checkpoint57p_post
55    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
56    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
57      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
58    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
59    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
60      (was already the case for dissipation with mom_vecinv,
61       and also the case for grad.PhiHyd when staggered-timeStep)
62      This will allow to put dissipation out-off the AB time-stepping.
63     Unfortunately, affects truncation error. Update output of exp. that "fails"
64      (cg2d matching number) and leave the others for later: front_relax(10),
65      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
66      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
67    
68    checkpoint57o_post
69    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
70      (2) its ready to be documented during the 20050801 DocFest
71    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
72      for ideal_2D_oce and lab_sea on linux_ia32_g77
73    o set to #undef CTRL_SET_OLD_MAXCVARS_30
74      in global1x1_tot/code_seaice_adj to access indices 32, 33
75      (worth another tag)
76    
77    checkpoint57n_post
78    o adding precip control xx_precip 32
79    o adding swflux control xx_swflux 33
80    o Replacing 10 forcing penalty cost routines by 1 generic.
81    o Implementing partitioning in time-mean and variable adjustment
82      for atmos. state.
83    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
84    o in natl_box_adjoint:
85      * updated exp 1 to 10
86        (but does not have time-mean vs. variable split results yet)
87    o updated global1x1/*_seaice_adj/
88      to incorporate latest changes
89    o enable useSingleCpuIO for mdsio vector routines
90      (applies in particular to tapelev I/O)
91    o removed inefficient K-loop in all active_file*control*.F
92    
93    checkpoint57m_post
94    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
95      and advect_cs (use EXCH-2 and standard cs-32 grid files).
96    o pkg/exch2: filling of face-corner halo regions is optional
97      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
98    
99    checkpoint57l_post
100     tag before updating tutorials (pre-release-2)
101    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
102       for output and interpolation of input fields onto model grid)
103    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
104       Affects results of exp. rotating_tank ; update output.txt.
105    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
106          and taking the square quantity and/or using a fraction-weight field.
107    o fix aim_diagnostics_init.F mate numbers.
108    o add mnc output capability to diagnostics/diagstat and update
109      our cvsignore files for the ACSII output generated
110    
111    checkpoint57k_post
112    o lab_sea now uses diagnostics package and provides a suite of
113      new EXF diagnostics output.
114    
115    checkpoint57j_post
116    o exf
117      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
118        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
119        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
120      * extended diagnostics output
121        - now includes all EXF variables
122        - hs, hl moved to common block
123        - separate S/R for diagnostics, called after ctrl vector is added
124        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
125        - EXFqnet contains true Qnet (i.e. includes qsw)
126      * updated verif. lab_sea, global_with_exf
127      * Rearranging hflux (exf_mapfields -> exf_getforcing)
128        to ensure that diagnostics sees a true EXFqnet
129    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
130    o diagnostics pkg: change pointers so that 1 diagnostic can be used
131      several times with different frequencies.
132    o mnc-ify the thsice package as requested by Daniel Enderton
133      - the monitor--MNC output needs work
134      - many attributes need to be added (most are currently blank)
135    o mnc-ify theaim_v23 package as requested by Daniel Enderton
136      - many attributes need to be added (most are currently blank)
137    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
138    o add Sadourny like discretization to the 4th.O vorticity advection scheme
139    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
140      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
141         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
142    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
143     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
144    
145    checkpoint57i_post
146    o Diagnostics package was changed: diagnostic allocation is now deactivated
147      by setting an empty file name in the namelist (used to be by setting 0 frequency)
148    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
149      add 1rst Order upwind vertical Shear.
150    o add a quick fix for A/B checkpointing in OFFLINE mode
151    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
152      end-run around the C/Fortran linking horror in eesup/src/timers.F
153    o added pkg/runclock: allows user to terminate run based on wall clock
154    o added non-hydrostatic scaling parameter: nh_am2
155    o pkg/my82: futile attempt to make results compiler-independent by adding
156      some "_d 0", etc. no effect.
157    o for mnc output, fill the 'T' coordinate var with myTime and create a
158      separate 'iter' variable for iteration count
159    o pkg/diagnostics:
160      add new capability: output of Global/Regional & per-level statistics ;
161      tested against monitor output (including land & thSIce) on various exp.
162    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
163    
164    checkpoint57h_done
165      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
166      data.diagnostics, data.gchem, data.ptracers) is done.
167    
168    o pkg/diagnostics: prepare for Global/Regional statistics.
169      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
170    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
171      and rename it: DIFFERENT_MULTIPLE
172    
173    checkpoint57h_post
174    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
175    o pkg/diagnostics: change output frequency, now in seconds (instead
176      of Nb of iterations). This requires to change data.diagnostics.
177    checkpoint57h_pre
178    
179    o in mnc, let the user create the output dir if both mnc_outdir_date
180      and mnc_outdir_num are false
181    o add fflags() to pkg/diagnostics which allows one to specify, on a
182      per-file basis, the file precision [default behavior is unchanged]
183    o added diagnostics to pkg/kpp, including computation of mixed layer
184      depth based on a temperature/density criterion
185    o updated verification/natl_box to test the new pkg/kpp diagnostics
186    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
187    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
188    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
189      not mnc -- this mistake was found by JMC and is now corrected
190    
191    checkpoint57g_post
192    o add Adams-Bashforth 3rd Order time stepping:
193      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
194      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
195    checkpoint57g_pre
196    
197    o make lambda[Theta,Salt]ClimRelax spatially varying
198      (default remains spatially uniform constant based on tau)
199    o added new control variables
200      * init. uVel, vVel, etanN
201      * lambda[Theta,Salt]ClimRelax
202    o separate masks used for ctrl_pack/unpack 'from write_grid' output
203      (suggested by G. Forget)
204    
205    checkpoint57f_post
206    o add parameter "baseTime" = model base time = time at iteration zero
207      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
208      account for baseTime shift
209    o move Coriolis arrays from PARAMS.h to GRID.h
210    checkpoint57f_pre
211    
212    o mnc-ifying the seaice package
213    o introduced an alternative length scale calculation for use in the limiting
214      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
215    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
216    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
217      as well as grad(vort3).  Made it compatible with both approximate form
218      for the cubed sphere and full form of these gradients.  Added flag
219      useFullLeith to select between approximate and full form.  
220    o add "d0" in getcon.F to reduce differences between compilers/platforms
221      update output.txt of exp. fizhi-gridalt-hs
222    o change port_rand funtion to allow to set the seed.
223    o fix obscure MNC bug involving conversion between reals and integers
224      - it caused no problems with certain (eg. gcc, ifc) compilers but the
225        new version is now more standards-compliant
226    o adjoint-related modifications
227      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
228      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
229      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
230    
231    checkpoint57e_post
232    o Adding eddy stress controls a la Ferreira et al.
233    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
234    
235    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
236      update output.txt of exp. fizhi-gridalt-hs
237    o add more "Z" dimensions and associated coordinate vars to MNC
238    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
239    o parameter calendarDumps: when set, approximate months (30-31 days) and years
240      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
241      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
242      months and years.  Requires pkg/cal.
243    o diagnostics: add pickup functionality
244      - off by default for backwards compatibility
245      - current version only uses MDSIO -- MNC will be added
246    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
247    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
248    
249    checkpoint57d_post
250    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
251    o modify verification/ideal_2D_oce so that it tests the creation of mnc
252      output from the diagnostics package
253    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
254    o make genmake2 more portable by using ".$FS" instead of ".f" for more
255      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
256    o add coordinate variables to the MNC output from the diagnostics package
257    o change MNC-flags default value: true when useMNC=TRUE
258    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
259      the ability (off by default) to read the grid information using MNC
260    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
261    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
262    o do snap-shot diagnostics at the middle of the time-interval (instead of
263      at the end).
264    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
265      new test for AIM with thSIce + slab-ocean
266    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
267    o move state variable diagnostics to the beginning of the time step ;
268      (note: still needs some work specially for snap-shot diagnostics)
269      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
270    
271    checkpoint57c_post
272    o Change testing option (-ieee) to get closer agreement between g77 & ifort
273    o generate new output.txt files on faulks with g77 & the new -ieee option
274    checkpoint57c_pre
275    
276    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
277      update output.txt of exp. global_ocean.90x40x15
278    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
279      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
280    o add saltFlux(+File) forcing capability with periodicExternalForcing
281    o allow to use pkg diagnostics for GM-Redi & ThSIce output
282    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
283    o improvements for the MNC output from DIAGNOSTICS:
284      - correct handling of the unlimitied dimension
285      - all dims now have associated coordinate variables
286      - variables located at U, V, and Corner ("Z") points are now written
287        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
288        *all* data points are output
289    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
290    o added pkg/seaice/seaice_monitor.F
291    o mdsio_readfield.F can now read files visible only to master MPI process.
292    o pkg/seaice: some test code for ice-modified ocean stress
293    o exf_getffields interpolation defaults to bilinear for all scalar forcing
294      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
295      spurious negative numbers for precipitation and humidity.  Will cause
296      some small numerical differences for integrations using pkg/exf/exf_interp.F.
297    o pkg/ctrl/
298      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
299        May be enabled via doPackDiag
300      *  introduce z-scaling of
301         + gradient (doZscalePack) and
302         + control (doZscaleUnpack)
303    o pkg/mdsio/
304      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
305      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
306    
307    checkpoint57b_post
308    o simplify options in diagnostics_fill arguments (remove weird combinations)
309    o fix MNC coordinate variables so that they now contain per-face index
310      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
311      general, EXCH2 grids are only aligned to a "local" coordinate system
312    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
313    o Implement instantaneous output within pkg diagnostics:
314      setting a negative frequency in data.diagnostics produces
315     "snap-shot" output (as opposed to time-average if freq > 0)
316    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
317      NOTE: change ptracer diagnostics name: use 2 characters to work with
318            more than 9 tracers. Add also diagnostics of advect & diffus flux.
319    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
320      becomes the coordinate variable for the 'T' dimension
321    o add CF-style coordinate variables to MNC
322      - just a first cut:  numbers are meaningless on the cubesphere and
323        missing along the T axis but otherwise it works!
324    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
325    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
326    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
327      this is based directly on what the model compute, so that the content of
328      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
329    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
330    o clean up build options files for SunOS, in particular
331      - remove -traditional from xmakedepend
332      - change -xarch=v9 to -xarch=native for f77
333      - restore use of make (not gmake)
334      - add CC=gcc if using g77
335    o changes per discussion of AM, JMC, & EH3 today:
336      - move redundant "grid" variables out of "state" -- in preparation of
337        creating proper CF-style coordinate variables and in recognition
338        that any/all grid variables can be easily copied (eg. w/NCO) from
339        the grid files into any of the other NetCDF files
340      - *always* output grid variables with MDSIO (this will eventually be
341        changed)
342      - output MNC grid file if useMNC is true
343    o every instance of _END_MASTER() has been found and replaced with
344      _END_MASTER( myThid ) in order to satisfy certain picky Sun
345      preprocessors
346    o re-arrange diagnostics pkg initialisation:
347     - allow each package to extend the available diagnostics list
348     - add some checking and fix small problems (multi-threaded, ...)
349     - new S/R diagnostics_fill (replace fill_diagnostics):
350       look through the short list of active diag. (instead of the long list)
351       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
352    
353    checkpoint57a_post
354    o this set of changes restores TAMC compatibility
355      tested for global_ocean.90x40x15 adjoint on trough
356      (what a pain)
357    
358    checkpoint57a_pre
359    o some modifs in tools/build_options for sunos
360    o call ctrl_pack for ctrl at end for optimcycle=0
361    
362    checkpoint57
363    o add horizontal bi-harmonic viscosity for vertical velocity
364      - new parameter viscA4W (defaults to viscA4)
365      - affects only non-hydrostatic code
366      - to be done: no-slip lateral boundary conditions
367    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
368    o implement Implicit Vertical advection for pTracers
369    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
370      (implemented also for implicit vertical diffusion & advection)
371    o OBCS: extend application of tracer open boundary conditions
372      to a strip beyond the boundary of width Olx/Oly
373    o add call monitor to TAF set of required calls (flow directives)
374      and include in natl_box_adjoint
375    o untangle a few ifdefs related to cost, ctrl, autodiff
376      untangel a few ALLOW_ECCO_OPTIMIZATION
377    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
378      (theta2, salt2 in ecco_cost_weights)
379    
380    checkpoint56c_post
381    o OBCS as control variables
382      - update ctrl_ad_diff.list, obcs_ad_diff.list
383      - remove balance of obcs controls from default
384      - fix index bug nobcs in ctrl_init
385      - fix dummy fields filen in ctrl_pack
386      - add dummy weights for obcs
387    o lsopt: comment out fort.94 output
388    o optim:
389      - remove unnecessary header files
390      - adjusted namelists
391      - add xerbla.F to Makefile
392    o exf:
393      - multiple modifications of exf_check_range
394      - unit change in exf_init_runoff from [m/year] to [m/s]
395    o mdsio:
396      - i/o-vector change debugLevel from debLevA to debLevB
397    
398    checkpoint56b_post
399    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
400      is called from DO_THE_MODEL_IO
401      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
402      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
403      - clean up PTRACERS_WRITE_TIMEAVE a little
404    o add another verification experiment that tests both the cfc-pkg and
405      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
406      reactive tendencies treated inline with regular timestepping
407    o testreport previously did a lousy job of comparing small numbers, so
408      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
409      implemented in the little c-progam tmp_cmpnum.c which is embedded in
410      testreport.
411    o ptracers_monitor: bug fix for MPI
412    
413    checkpoint56a_post
414    o GCHEM: finish reorganizating the package
415      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
416        (introduces another 3D-array for each passive tracer, but only if
417        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
418        gchemTendency is not needed because the timestep is done separately)
419      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
420      - GCHEM is now---more or less cleanly---separate from PTRACERS
421      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
422        so clear to me how that should be done in a general way.
423    o CFC: improve formatting of output in CFC_ATMOS
424    o PTRACERS:
425      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
426        that ALL experiments with ptracers enable can be checked. This makes
427        GCHEM_MONITOR obsolete.
428      - include a runtime parameter PTRACERS_monitorFreq that defaults to
429        monitorFreq
430      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
431    o add PTRACERS (PTR0[1-5]) to testreport output
432    o exf_check_range:
433      * default changed to .TRUE.
434      * will check values for niter0 if debLevA, every timestep if debLevB
435      * STOP in exf_check_range if 'out of range'
436      * range chosen generous to allow for potential extema
437      TBD: a version with stricter range
438           permitted range would be runtime parameters
439    o GMredi:
440      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
441      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
442      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
443    o GCHEM:
444      - move call to GCHEM_FORCING_SEP, so that it is now called before
445        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
446      - introduced a useGCHEM runtime flag and applied it everywhere.
447      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
448        this flag is now only visible within GCHEM-pkg routines.
449      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
450        be replaced by a 3D array that is computed before thermodynamics; for
451        this, the tracer ID iTracer had to be included into the parameter list
452        of ptracers_forcing
453      - set up forward_step to call gchem_forcing, that will replace
454        gchem_forcing_int in ptracers_forcing
455      - cleaning up
456    o small cleaning of exch2: remove files that are also in eesupp/src
457    
458    checkpoint56
459    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
460    o mnc: cleanup "full" files--fixes out-of-memory problem
461    o ECCO-GODAE
462      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
463      * fully merged and updated from SIO code
464        windstress sign change affects
465        - exf_inscal_[u/v]stress
466        - sign of xx_tau[u/v] adjustments
467        - signs in cost_scat
468      * ctrl_get_gen: avoid update of tau[u/v] for first few days
469      * natl_box_adjoint updated and compressed
470      * 2-level checkpoint switch added
471        (tested in EXP. 1 of natl_box_adjoint)
472      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
473    o SVD
474      * first complete, non-hacked version for SVD calculations
475      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
476        performed via direct access files admtlm_vector.it????
477        (via ctrl_[un]pack)
478      * optimcycle is used for ARPACK iteration counter
479        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
480      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
481        and add linear transforms where necessary
482      * controls are initial/final SST, SSS (can be extended; need to check
483        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
484    o mdsio: filename info to both stderr, stdout
485    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
486      from sign change
487    
488    checkpoint55j_post
489    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
490      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
491    o add consistent build directories and .cvsignore files to verification
492    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
493    o make all subroutines 30 or less characters in length for certain older
494      compilers to work (a thorough search only turns up two routines in
495      pkg/ptracers)
496    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
497      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
498    
499    checkpoint55i_post
500    o change arrays for total vertical diffusivity (2.D if explicit,
501      3.D if implicit) ; each ptracer uses its own background value.
502    o added mnc/NetCDF output capability to ocn_compon_interf
503      - added bits to verification/cpl_aim+ocn so that it can run on
504        ITRDA and other clusters without the mpirun "-wd" option
505    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
506      configuration
507    o give MNC the ability to create additional files rather than
508      exceeding a specified file size limit "MNC_MAX_FILESIZE"
509      - the default is just less than 2GB which is a practical limit
510        on many systems
511    o Compute the non-local term using either KPP vertical diffusivity (=default)
512       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
513    
514    checkpoint55h_post
515    o add verification test "vermix"
516    o remove all the *_ioinc flags and replace with the single global
517      outputTypesInclusive flag
518    o allow to set a vertical profile of vertical diffusivity for T & S
519    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
520    o useMNC moved from data.mnc to data.pkg
521    
522    checkpoint55g_post
523    o Renaming carbon AD experiments to comply with testreport conventions
524    o Updating adjoint of Held-Suarez hs94.1x64x5
525    o Fixing directives for non-ECCO forward_step, after ECCO directives
526      have been fixed to avoid recomp. of do_oceanic_phys
527      Works well for global_ocean.90x40x15,
528      but recomp. issue remains for carbon
529    o Updating adjoint output for natl_box_adjoint after
530      pkg/ecco has been modified (see taga c55d_post)
531    
532    checkpoint55f_post
533    o rename to timeave_init_fixed
534    
535    checkpoint55e_post
536    o some delicate re-shuffle of store directives to avoid one
537      extra call of do_oceanic_physics
538      affects ecco_the_main_loop.F, do_oceanic_physics.F
539      checkpoint_lev1_directives.h
540    o NB: this may break global_ocean adjoint temporarily,
541      but it is clear how to fix it. Will do later, need this now.
542    
543    checkpoint55d_post
544    o ECCO specific cost function terms (up-to-date with 1x1 runs)
545    o ecco_cost_weights is modified to 1x1 runs
546    o modifs to allow observations to be read in as
547      single file or yearly files
548    o enable to read exf forcing fields as either
549      single file or yearly files (flag useExfYearlyFields)
550    checkpoint55d_pre
551    
552    o switch between 2-level and 3-level checkpointing
553    o add ability of MNC to write local and "partial" (eg. 2D slices where
554      the full 3D field is never actually stored) arrays to NetCDF files
555      with the correct (that is, the complete multi-dimensional) set of
556      array indicies
557      - used in mom_vecinv() to write the diagFreq output
558      - tested (demonstrated) in verification/aim.5l_cs
559    o further mnc-ification
560      - add verification/lab_sea to the list with mnc setups
561      - fix undefined mnc v-names in cd_code
562      - add kpp to mnc output (both snapshot and timeave)
563    o non-hydrostatic code
564      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
565        in calc_gw.F
566      - defaults to viscAh
567      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
568        friction or Leith) in non-hydrostatic mode, as long as there is
569        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
570    o pkg/cost
571      extend simple cost functions to treat time mean quantities
572      (T,U,V) via cost_accumulate_state from cost_tile
573    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
574        be 2 times larger than the minimum size the advection scheme requires.
575        now get a perfect conservation of salt in advect_cs test-exp (updated)
576    o GGL90 (Gaspar's TKE mixed layer)
577      - add horizontal diffusion of TKE, requires exchanges in
578        do_fields_blocking_exchanges, horizontal diffusivity is zero by
579        default. In OPA there is no horizontal diffusion of TKE but the
580        mixing coefficients are computed from a horizontal average of TKE of
581        6 points or so. I think that diffusion has a little more physical
582        justification.
583      - clean up ggl90_calc in the hope of reducing memory usage (this hope
584        was in vain)
585      - mask tke-variable in ggl90_init
586    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
587    o fix biharmonic diffusion on CS-grid.
588    o more obcs stuff
589      - added obcs_external_fields_load as an alternative to the EXF-pkg option
590        for reading boundary values. This routine is called from
591        obcs_prescribe_read
592      - updated obcs_check
593      - changed sponge layer relaxation parameter units for days to seconds
594      - turned off sponge layer by default
595      - changed argument list of OBCS_CALC to myTime+deltaTclock
596      - fixed about 35 bugs in obcs_external_fields_load
597    
598    checkpoint55c_post
599    o obcs stuff
600      - new runtime flags useOBCSprescribe, useOBCSbalance
601      - re-arranged obcs_calc
602      - moved exf_getobcs to obcs_prescibe_read
603        obcs_prescibe_read is called after ORLANSKI stuff
604        and independent of it (executable can contain all).
605      - updated obcs_check
606      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
607        These may be necessary only if tangential velocities are
608        prescribed at OB, not sure, needs testing.
609    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
610      which simplifies the calls and passes the ifc check-bounds test
611    
612    checkpoint55b_post
613    o add a 2D scalar, Z location, exchange_2 routine.
614    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
615      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
616      affects advect_cs results (for the wrong reason): update output.txt
617    o use a more standard discretization for biharmonic viscosity ;
618     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
619      affects results of dome set-up: update output.txt
620    o fix gad_advection.F (CubedSphere part), back to version 1.23
621    o fix bug in mom_vi_del2uv.F (CubedSphere part).
622    
623    checkpoint55a_post
624    o merged code to
625      * prescribe/read time-dependent open boundaries
626        (works in conjunction with exf, cal)
627      * sponge layer code for open boundaries
628      * each boundary N/S/E/W now has its own CPP option
629        (healthy for the adjoint)
630    
631    checkpoint55
632    o up-to-date adjoint of previous breaks
633      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
634      - global_ocean_ebm: adjoint still needs fix (TLM ok)
635      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
636      - carbon: * remove tr1-related adjoint verification
637                * add ptracer as control variable
638    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
639      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
640    
641    checkpoint54f_post
642    o in verification/carbin/ remove experiment related to
643      ALLOW_PASSIVE_TRACER (array tr1 etc)
644      code_ad/ input_ad/ results_ad
645    
646    o add two new packages
647      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
648        + subject to optimization (memory)
649      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
650        + subject to reordering (many GOTOs in the original code)
651        + so far opps is called for every (i,j) point, and then operates in
652          the vertical; one may want to reorder the scheme in order operate in
653          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
654          fields)
655    o overhaul of IO so that we now have flags for MDSIO and/or MNC
656      - all verification tests compile and run with linux_ia32_g77
657      - defaults are compatible with current input files--nothing
658        should change if you were not previously using MNC
659      - MNC output has been added in numerous places (eg. timeave)
660        but there are still a few writes not yet do-able with MNC
661        (this is in progress)
662      - flags now allow for either/or/both use of MDSIO and MNC and
663        documentation will soon follow
664      - numerous small formatting cleanups for ProTeX
665    o add version info (via BUILD_INFO.h) to MNC and stdout
666    
667    checkpoint54e_post
668    o add two new packages
669      - pp81 (Packanowski and Philander, 1981), Richardson number and
670        stratification dependent mixing
671      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
672      - these scheme operate in a similar manner as KPP (without ghat, of
673        course), however there is only one diffusivity that is used for both
674        temperature and salinity (and passive tracers)ç
675    o add offline package
676    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
677      provided by Stephanie Dutkiewicz
678    o genmake2: add ability to search for C compilers and cleanup test output
679      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
680    
681    checkpoint54d_post
682    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
683    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
684      leading to additional shift by 5 days each year of integration
685       (i.e. leading to considerable offset over the years)
686    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
687    o start with no AB and no initial filtering (staggerTimeStep):
688      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
689    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
690      (external loading & cpl import/export stay in forward_step.F)
691    o update coupling interface to work with new staggerTimeStep
692    o change MDSIO ptracers_pickup.
693    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
694    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
695    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
696    
697    checkpoint54c_post
698    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
699      this affects (truncation error) output.txt of test-exp:
700       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
701    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
702    o change Qnet to always be the net heat flux, (+upward).
703      affects (truncation error) output of natl_box exp.: updated
704    o define the max number of passive tracers in PTRACERS_SIZE.h
705    o start to test mnc routinely in exp0
706    o add sea-ice loading (sIceLoad) as a new forcing field.
707    
708    checkpoint54b_post
709    o add testreport "-j JOBS" option for parallel builds (tested and pretty
710       impressive on Altix and Opteron systems)
711    o diagnostics can now write NetCDF files through the mnc package
712    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
713    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
714    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
715      affects (truncation error) output of lab_sea & natl_box exp.: updated
716    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
717    
718    checkpoint54a_post
719    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
720    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
721    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
722    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
723      + internal_wave (shift in writing cg2d_ini_res)
724    checkpoint54a_pre
725    
726    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
727      - modified verification/lab_sea and natl_box_adjoint accordingly
728    
729    checkpoint54
730    checkpoint53g_post
731    o prepare splitting of thermodynamics: store convect.counter in common block
732    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
733      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
734    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
735    o new parameter "nShapS": allow to treat differently S from T (nShapT)
736    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
737    o restore adjointability
738    
739    checkpoint53f_post
740    o modifications that affect AIM experiment results (update output.txt):
741      - no advection of S at top interface Nr (pkg/generic_advdiff)
742      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
743    o AIM pkg:
744      - include stability function into surf.Flux derivative relative to Tsurf
745      - calculate clear-sky radiation & surface temp. change (for diagnostics)
746    
747    checkpoint53e_post
748    o merged cylindrical coord configuration
749    o added rotating_tank experiment
750    checkpoint53e_pre
751    
752    checkpoint53d_post
753    o faulks upgraded: re-generate output.txt that have changed:
754       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
755    o Added Bryan and Lewis, 1979, vertical diffusivity profile
756    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
757    o added Sadourny discretization of Coriolis
758      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
759      - re-enabled use of omega3 (useAbsVorticity)
760    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
761      vector-invariant equations
762      - note: does *NOT* yet use same variable visc. for no-slip BC's.
763    o recoded the lateral boundary conditions for non-hydrostatic w, this time
764      hopefully without new bugs
765      - still to do: biharmonic friction for non-hydrostatic w
766    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
767    o regenerated output for global_ocean_ebm (using -ieee)
768    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
769      of mom_common/
770      - simple re-arrangement of instructions within computing loop
771    checkpoint53d_pre
772    
773    checkpoint53c_post
774    o new version of coupler for AIM+thSIce and Ocean models
775     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
776     - land: change Evaporation of snow
777     - aim with thSIce: fix bug in snow-precip.
778    o changes to calc_gw.F
779     - bug fix for w^2 term near the bottom boundary
780     - (hopefully) improve the lateral slip boundary condtions for use with
781        partial/looped cells
782      - because the bug fix changes two verification experiments anyway (exp5
783        and plume on slope), change the lateral boundary condition from half slip
784        to the value of no_slip_sides
785    o ebm package wasnt quite up to the parallel task. Fixed that.
786    o Adjoint of EBM package + verification
787      * TLM OK
788      * ADM not sufficient accuracy yet (needs further testing)
789    
790    checkpoint53b_post
791    o Commiting new energy balance model to repository
792      * package is pkg/ebm
793      * verif. is verification/global_ocean_ebm
794      * references are in ebm_driver.F
795    C      * X. Wang, P. Stone and J. Marotzke, 1999:
796    C        Global thermohaline circulation. Part I:
797    C        Sensitivity to atmospheric moisture transport.
798    C        J. Climate 12(1), 71-82
799    C      * X. Wang, P. Stone and J. Marotzke, 1999:
800    C        Global thermohaline circulation. Part II:
801    C        Sensitivity with interactive transport.
802    C        J. Climate 12(1), 83-91
803    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
804    C        Destabilization of the thermohaline circulation
805    C        by atmospheric eddy transports.
806    C        J. Climate 7(12), 1870-1882
807    o Will need long integration testing.
808    checkpoint53b_pre
809    
810    o created pkg/mom_common in preparation for variable viscosity code
811    o renamed and split ini_mnc_io
812    o pkg/land: only liquid water can diffuse or run-off
813    o AIM using land: soil wetness availability account for snow
814    o added printMapIncludesZeros to EEPARMS namelist
815    
816    checkpoint53a_post
817    o restore TAMC compatiility for exf_constants.h
818      (no usage of _d in .h)
819    o Additional storing in KPP in an attempt to fix
820      TAMC problem with adjoint of KPP code.
821      (no success...)
822      Identical code works fine with TAF.
823    o Fixed verification/natl_box_adjoint experiments.
824      Initial conditions for Experiments 4 and 5 are now
825      set to "SEAICE_initialHEFF=0", which is more reasonable,
826      and hence gives results closer to that of Experiment 2.
827      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
828    
829    checkpoint53
830    o stable checkpoint with up to date adjoint
831      TLM tests only run for 1st grdchk at the moment. Its unclear if
832      this is a code problem or a problem with resetting code for g_
833      variables that is being autogenerated wrong.
834      Otherwise:
835       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
836       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
837         are both still in chaos following their security messes.
838    
839    checkpoint52n_post
840    o various build (mostly genmake2) changes including:
841      - ability to build/run more easily within Cygwin and MacOS X
842      - more complicated Makefiles with a stronger dependence on Gnu Make
843    o pkg/seaice modifications
844      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
845        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
846        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
847      - changed proxy for geostrophic velocity and updated
848        verification/lab_sea/results/* accordingly
849      - removed ADI dynamic solver from pkg/seaice
850      - replaced all occurrences of 1/CSTICE or 1/CSUICE
851        they caused a segmentation fault under certain circumstances
852      - removed unused field WATR
853    o bug fix in exf-package:
854      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
855         now reflect that.
856    o small fixes in the cal-package:
857      - set reference date to first of January for the 'model'-calendar
858      - failing of cal_CheckDate in cal_FullDate now actually results in a
859        warning
860    o small modifications in exf-package to increase flexibility:
861      - change climtempfreeze from a constant to a runtime parameter that
862        is specified in data.exf_clim (default = -1.9)
863      - introduce runtime parameter windstressmax (default = 2.0) that is
864        specified in data.exf
865    o fix in pkg/thsice:
866      - update Evap (Tsf changes) to be consistent with Latent heat flux
867      - maintain snow precipitation unchanged (even if Tsf >=0).
868     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
869    
870    checkpoint52m_post
871    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
872      this does not change any of the results, because myIter=0 in swfrac always
873      lead to jwtype=2 (the default anyway), but the call makes little sense
874      as a default
875    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
876    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
877      atmospheric model (AIM) to use it ; add a "slab ocean" component.
878    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
879    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
880    o extending useSingleCpuIO option to work with new exch2 I/O format
881      - old-style, missing-tile I/O is still accessible by defining CPP
882        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
883    o monitor package can write to NetCDF files and/or STDOUT
884    o fix re-definition bug in MNC_GRID_INIT_ALL()
885    o doc/api_reference added
886      - a framework for building an API Reference Manual using all
887        the "protex" comments embedded in the code
888      - see pkg/generic_advdiff, pkg/mnc for examples
889    o MNC:
890      - make myThid the last argument for all subroutines
891      - new default for the grid files: NO halos
892      - add useMNC and other run-time flags
893      - separate per-file-group handling of the unlimited dimension
894      - early initialization of MNC w/ flags read at the eeboot stage
895        and lookup tables set in initialize_fixed
896      - write all MNC output to a freshly-created directory
897    o thermodynamics sea-ice (thsice) is now tested with testreport.
898    o test exp. advect_cs: use the standard cs32 grid ; update output.
899    o Added functionality to grdchk:
900      pick global i,j,k position (or nearest wet) where to perform check.
901    
902    checkpoint52l_post
903    o new land formulation:
904      a) use ground enthalpy as prognostic variable to ensure exact
905         energy conservation.
906      b) account for water temperature and for latent heat of freezing
907         in all processes (rain, run-off, ground storage)
908      c) compute surface and ground temperature implicitly.
909    o aim_v23 modification for new land model:
910      a) Treat separately land / ocean / sea-ice surface fluxes
911         to allow implicit computation of land & sea-ice surface temp.
912      b) add snow precipitation.
913    checkpoint52l_pre
914    
915    o fix problem (when 1 tile is empty) in min/max monitor.
916    o fix bug in timeAve (u,vZetatave in common block)
917    o no restoring terms under ice for pkg/seaice
918    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
919    o bug fix for pkg/seaice pickups
920    o change MNC call locations and add coordinate attributes
921    o mask vorticity at the corner ; affects global_ocean.cs output
922    o fix ini_curvilinear_grid ; test CS experiments with mpi
923    o aim.5l_cs: modify sea-ice fraction input file ; update output
924    o exf: Adding simple range check routine for exf fields after read
925    
926    checkpoint52k_post
927    o removed top-level directory "diags"
928      - we migrated these functions to pkg/timeave a long time ago
929    o fixed bug introduced in pkg/monitor
930    o accuracy ctrlprec = 32 insuffient for gradient checks using
931      averaged fields (I/O via cost_averages)
932      -> use ctrl.h in active_file*.F to control I/O precision.
933    o paramter list of CALL ADTHE_MAIN_LOOP
934    o added initial do_the_model_io to ecco
935    o set all ...Freq to zero after cost_final
936      taveFreq, dumpFreq, pChkptFreq
937    o MAIN and ECCO differentiability restored
938    
939    checkpoint52j_post
940    o fix nchklev in tamc.h for global_ocean...
941    o Bringing flow and store directives up-to-date
942    o Really weird thing!
943      call do_the_model_io from the_main_loop with parameters
944      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
945      TAF places a faulty re-call of initialise_varia
946      after cost_final call which should not be there!
947    checkpoint52j_pre
948    
949    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
950      error messages
951    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
952    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
953      debug output
954    o modfied mdsio_writefield.F to handle non-global files under exch2
955    o update AIM Cubed-Sphere exp (aim.5l_cs):
956      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
957    o update AIM Equatorial Channel exp:
958      use standard aim_v23 pkg and change the SST fields to be more realistic.
959    o globalFile now works with exch2
960    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
961      mon_vort3.F to make exch2 friendly with >1 tile per cube face
962    o limit timeave output for hi-res integrations
963    
964    checkpoint52i_post
965    o removed CPP_EEOPTIONS.h from verification/*/code
966    o updated the tiling for global_ocean_pressure
967    checkpoint52i_pre
968    
969    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
970      the old pkg/aim).
971    
972    checkpoint52h_pre
973    o shortened offending lines in exch2_send_rx?.template
974    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
975    o genmake2: add build & execute test for NetCDF code
976    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
977      old grid files, moved CPP_EEMACROS.h to pkg/exch2
978    o added useSingleCPUIO flag to monitor.F and mon_out.F
979    o added temporary hack for sea-ice dynamics on the cube:
980      metric terms are ignored and it is assumed that
981      there is no sea-ice on cube faces 1, 2, 4, and 5.
982    
983    checkpoint52f_post
984    o added exch2 cube routines to pkg/exch2
985    o modified hs94.cs-32x32x5 to use it
986    o added new grid files to hs94.cs-32x32x5
987    checkpoint52f_pre
988    
989    checkpoint52e_post
990    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
991      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
992    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
993      to work with implicit vertical advection and AB ;
994    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
995    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
996     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
997    checkpoint52e_pre
998    
999    o fix bug in impldiff when Nr=1 or Nr=2.
1000    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
1001    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
1002    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
1003      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
1004    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
1005    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
1006    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
1007    
1008    checkpoint52d_post
1009    o re-tiled many expts to allow comparison in multi-processor mode
1010      - updated output accordingly
1011      - changed hs94.128x64x5 to use intial T from file rather than use the
1012        random number generator
1013    o add infrastructure in model routines for fizhi and gridalt packages
1014    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
1015    o changes to permit hi-res, cubed-sphere, configuration
1016      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
1017      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
1018      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
1019        of surface winds for the cube
1020      (A verification experiment, based on global_ocean.cs32x15, but with
1021       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
1022       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
1023       complete with example surface forcing files and matlab scripts to look
1024       at the output and compare it with that of global_ocean.cs32x15.)
1025    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
1026       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
1027       to conform to the common rule.
1028    o check-in the first version of the coupler + interfaces for multi-components
1029       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
1030       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
1031       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
1032       - ocean and atmos. share the same horizontal grid (no interpolation).
1033       - exchanges between component and coupler is done in forward_step
1034    o new verification experiment, cpl_aim+ocn:
1035       coupled ocean - AIM atmosphere on cs32 grid.
1036    
1037    checkpoint52d_pre
1038    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
1039    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
1040    
1041    checkpoint52c_post
1042    o Fixing OPTIONS files for use of exf:
1043      - ALLOW_ECCO not needed
1044      - ECCO_CPPOPTIONS.h should not be included from
1045        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
1046        as has been the case in the past
1047      - All cal/exf related options are currently set in
1048        single header file. Should remain so until we
1049        agree on a consistent new policy.
1050    o Removed all CPP options for cal package.
1051      cal has no more CPP options.
1052    o modified STOREs in GAD_ADVECTION
1053    o corrected key comp. for passkey
1054    
1055    checkpoint52b_post
1056    o new version: "thsice" of thermodynamic sea-ice pkg:
1057     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
1058     - modify fluxes but do not change theta directly;
1059     - light cleaning of bulk_force pkg (still needed with thsice).
1060     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
1061       + output_thsice.txt to test thsice & bulk_force pkgs.
1062    o put back grid & coriolis monitor output.
1063    checkpoint52b_pre
1064    
1065    o call "do_the_model_io" at the beginning (=> dump initial state)
1066    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
1067    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
1068      (need info on NUMBER_OF_PTRACERS)
1069    o missing PTRACERS headers in some routines
1070    o default tamc.h in pkg/autodiff supposed to crash
1071      to ensure proper customization
1072    
1073    checkpoint52a_post
1074    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
1075      - moved surfaceTendencyTice from pkg/seaice to main code
1076      - subroutine FREEZE_SURFACE now limits only surface temperature
1077        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
1078        => new output.txt for global_ocean.cs32x15 & global_with_exf
1079      - keep the old version of FREEZE for backward compatibility;
1080        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
1081      - corresponding modifs for TAF directives
1082    o added surface flux output variables to TIMEAVE_STATVARS
1083    o time-averaged output for pkg/ptracers
1084    o fix problem with ECCO-related divided adjoint
1085      snapshot file was missing some ad-variables,
1086      but no warning issued by TAF
1087    
1088    checkpoint52a_pre
1089    o some bug fixes for #undef REAL4_IS_SLOW
1090    
1091    checkpoint52 = ecco_c52_e35
1092    o after testing adjoints of checkpoint51u_post
1093    
1094    checkpoint51u_post
1095    o this is the post-merge tag of the ecco-branch
1096      (needs another clean checkout and re-testing)
1097    o various natl_box_adjoint configs and results
1098      but no input fields
1099    o obcs adjoint not yet merged!
1100    o adding ECCO global 1x1 and 2x2 degree configs
1101    o updated/extended some store directives for seaice
1102    o pkg/ecco now containes ecco-specific part of cost function
1103    o top level routines the_main_loop, forward_step
1104      supersede those in model/src/
1105      previous input data.cost now in data.ecco
1106      (new namelist ecco_cost_nml)
1107    o in ctrl/ cleaned some cross-dependencies and updated CPP options
1108    
1109    checkpoint51t_post
1110    o this is the pre-merge tag of the ecco-branch
1111    
1112    checkpoint51s_post
1113    o cleanup: removed various obsolete #define-s
1114    o pkg/grdchk
1115      - renamed 'ph-grd 3' to 'grad-res'
1116      - merged from ecco-branch
1117        (remaining bug fixes for obcs gradient checks)
1118      - additional high-precision output for testreport
1119        (grep for 'precision_grdchk_result')
1120    
1121    checkpoint51r_post
1122    o cleaned up or removed CPP_OPTIONS.h files
1123    o updated results for some of the tests to reflect the new
1124      optfiles (-ieee: -O0 instead of -O3)
1125    
1126    checkpoint51q_post
1127    o cd_code:
1128      - moved cd_scheme.F -> cd_code_scheme.F
1129      - separate read_checkpoint from cd_code_ini_vars.F
1130      - separated cd_code part from write_checkpoint
1131      - updated AD_SOURCE, generated .flow
1132      - added CD_CODE_VARS.h to the_main_loop
1133      - Moving cd_code specific store dir.s to pkg/cd_code
1134    o ctrl package totally restructured
1135      - pack/unpack now optional and decoupled from
1136        xx_/adxx_ I/O
1137      - ctrl_pack/unpack cleaned
1138        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
1139      - confined inclusion of AD_CONFIG.h to where necessary.
1140    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
1141    
1142    checkpoint51p_post
1143    o create initial cd_code package
1144      - WARNING: the initialization of fields within packages
1145        is broken because INI_FIELDS (where READ_CHECKPOINT is
1146        called) is called *before* PACKAGES_INIT_VARIABLES.
1147        This seems to be backwards since
1148        1) its important to initially zero the entire field including
1149           the "halo" region
1150        2) zeroing needs to be done *before* reading pickup info
1151           and the pickup call might or might not happen in any
1152           particular run
1153      - this needs an overhaul for R2
1154    o cleanup verification/*/code/GMREDI_OPTIONS.h
1155    o cleanup testreport
1156    
1157    checkpoint51o_post
1158    o bringing AD-related verif's up to date with genmake2
1159      - carbon/
1160      - global_ocean.90x40x15/
1161      - hs.94.1x64x5/
1162      - (front_relax/ )
1163    o (more) consistent directory structure for AD-related verif.'s
1164    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
1165    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
1166    o bug fix in find_alpha.F for MDJWF:
1167      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
1168        change rho -> rho-rhoConst
1169      - replace call find_rho to find_rhonum
1170    o initialisation of rFlx extended to full array (required by TAF)
1171      and shifted to thermodynamics
1172    o removed PTRACERS.h in ptracers routine
1173    o added surfacetendencyPtr to S/R parameter list pracers_forcing
1174    o Correcting initialisations for fVerU, fVerV.
1175    o helping TAF to recognize dependency on kUp for
1176      fVerU, fVerV
1177    o Replacing delZ by delR in pkg/ctrl/
1178    checkpoint51o_pre
1179    
1180    o undid all of cp51 pending some cleanups and discussion
1181    o added the [#include "AD_CONFIG.h"] statement to all files that need
1182       it for adjoint/tl #defines
1183     o re-worked the build logic in genmake2 to support AD_CONFIG.h
1184     o removed tools/genmake since it no longer works
1185    
1186    checkpoint51n_post
1187    o modifications to make FREEZE flux visible to pkg/kpp
1188      - moved surfaceTendencyTice from pkg/seaice to main code
1189      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
1190      - subroutine FREEZE now limits only surface temperature
1191        (this means new output.txt for global_ocean.90x40x15,
1192         global_ocean.cs32x15, and global_with_exf)
1193    o added surface flux output variables to TIMEAVE_STATVARS
1194    
1195    checkpoint51n_pre
1196    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
1197    o added [#include "AD_CONFIG.h"] to all files that use the following
1198      defines:
1199      - ALLOW_ADJOINT_RUN
1200      - ALLOW_TANGENTLINEAR_RUN
1201      - ALLOW_ECCO_OPTIMIZATION
1202    
1203    checkpoint51m_post
1204    o incorporating changes to get TAMC/TAF working in genmake2
1205      - added new TAMC/TAF targets to the Makefile
1206      - various cleanups related to package handling
1207      - these changes should have no impact on the forward model
1208    
1209    checkpoint51l_post
1210    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
1211     - faster algorithm for cal_addtime.F
1212     - higher precision arithmetic, where needed
1213     - pkg/exf *startdate variables changed from calendar date to
1214       model integration time
1215    
1216    checkpoint51l_pre
1217    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
1218    o enable to apply restoring on S & T only in a latitude band.
1219    o update output (external_forcing_surf modif. change truncation errors)
1220       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
1221    
1222    checkpoint51k_post
1223    o change default to: useNHMTerms=.FALSE.
1224     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
1225       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
1226     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
1227        exp1, ideal_2D_oce
1228     - change data file of oceanic exp (leave the results unchanged for now)
1229       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
1230    o set gravitySign automatically according to the vertical coordinate used
1231      (and change sign: back to "logical" value: +1 when R increases downward)
1232    o added an include barrier to the default CPP_OPTIONS.h and
1233      removed the #include "PACKAGES_CONFIG.h" from it
1234    o fix a bug in mom_fluxform (from chk51j_post)
1235    
1236    checkpoint51j_post
1237    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
1238    o adjusted some flow directives (dynamics, thermodynamics)
1239    o added cubed-sphere case to test cost function
1240    o heckpoint_lev?_directives.h now include
1241      pkg-specific directives, whenever those are enabled.
1242    o Moving pkg-specific flow directives to corresponding pkg
1243      Moving pkg-specific differentiation list to corresponding pkg
1244      Moving pkg-specific checkpoint-lev storing to corresponding pkg
1245      ---> conventions are
1246           - pkg_ad.flow
1247           - pkg_ad_diff.list
1248           - pkg_ad_check_lev?_dir.h
1249    
1250    checkpoint51i_post
1251    o merge of the branch-genmake2
1252      - knowingly breaks the older genmake
1253      - automatic generation of all ALLOW_${PKG_NAME} defines
1254      - new testreport supersedes older testscript
1255    o large number of package inclusion and header cleanups
1256    checkpoint51i_pre
1257    
1258    o new output for adjoin of global ocean vector invariant
1259    o fix for checkpoint of thermodynamic seaice and bulk_force
1260    o Steph gchem various cleanups
1261    
1262    checkpoint 51h_pre
1263    o fixed some single quotes
1264    o modify gchem pkg to be more versatile
1265    o modifications to clean up dic pkg
1266    o add pkg/cfc
1267    
1268    checkpoint51g_post
1269    o provide links for ARPACK and ADM*TLM
1270    o start removing verification/vero/
1271    o update AD-related stuff
1272      (in particular some IF-statements in model/src/ routines)
1273    o adding to verification/global_ocean.90x40x15/ adjoint of
1274      vector invariant setup
1275    
1276    checkpoint51f_post
1277    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
1278    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
1279      of tracer Green's fucntions for ocean inversion project.
1280    
1281    checkpoint51f_pre
1282    o Added on-the-fly spatial interpolation capability
1283        "USE_EXF_INTERPOLATION" to pkg/exf.
1284      - This is a temporary Cartesian-grid hack until
1285        the super-duper ESMF coupler becomes available.
1286      - See verification/global_with_exf/README for usage example.
1287      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
1288        flags and modified pkg/seaice accordingly.
1289    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
1290        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
1291        non-local transport term.
1292    
1293    checkpoint51e_post
1294    o pkg/mom_vecinv:
1295      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
1296      - add time-ave diagnostic of vorticity advection.
1297    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
1298    o atmospheric geopotential: - include water vapor effect;
1299                                - use p^kappa in p* scaling.
1300    o land pkg: read initial state from files.
1301    o AIM : add stratospheric drag in the upper level
1302    
1303    checkpoint51d_post
1304    o change function ILNBLNK (=> last non-blank char.) to return zero
1305      (instead of the string length) when the string. char is empty
1306    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
1307    o modif's to restore TAMC compatibility
1308      - avoid "_d" constructs in PARAMETER declarations
1309      - avoid interrupting lines by comment lines
1310    o Use cluster local disks for purely local I/O
1311      vs. globally visible disks needed for ctrl stuff
1312      (merged from ecco-branch)
1313      - new active_file_loc... and mdsio_..._loc routines
1314      - affected packages: autodiff, ctrl, grdchk, mdsio
1315    
1316    checkpoint51c_post
1317    o introducing integer flag debugLevel
1318      - debLevZero: suppress all output
1319      - debLevA: standard
1320      - debLevB: equivalent to current debugMode=.TRUE.
1321    o introducing pathname variable mdsioLocalDir for mdsio
1322      that can be specified at runtime
1323      (relevant for cluster I/O to local disk)
1324    `
1325    >>>checkpoint51b_post
1326    adjoint of ptracers
1327    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
1328    o extended state in checkpoint_lev?, etc.
1329    o alternative ctrl/cost with tr1 or ptracer
1330    o new comlev1_bibj_ptracers
1331    o new ptracers.flow
1332    o made ptracers_forcing same as external_forcing_s
1333    o added verification for adjoint with ptracers
1334      - adm. grdchk fail so far
1335      - tlm. grdchk OK
1336      - checked tapelev/comlev recomputations: OK
1337    <<<checkpoint51b_pre
1338    
1339    checkpoint51a_post
1340    o added code for biogeochemistry package
1341      - new pkgs: dic, gchem
1342      - new subroutine in ptracers
1343    o modify code for biogeo packages
1344      - in model/src and pkg/ptracers
1345    
1346    checkpoint51
1347    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
1348      - autodiff, ctrl, exf, grdchk, seaice
1349      kept separate packages
1350      - cost, ecco, obcs
1351    o updating verification/internal_wave, verification/lab_sea
1352      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
1353    
1354    checkpoint50i_post
1355    o Preparing next differentiable checkpoint and sync
1356      of MAIN vs. ecco-branch
1357      - 1st step: this one is differentiable
1358      - 2nd step: next(! not this) checkpoint will have updated packages
1359                  from ecco-branch)
1360    
1361    checkpoint50h_post
1362    o new package "land": provide surface BC for AIM.
1363    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
1364    o AIM: use true log-P extrapolation for near surface temp (= as in
1365        F.Molteni paper) ; update aim.5l_cs output.
1366    o New variable in PARM03 for more flexible pickups
1367    o somewhat cleaned package initialisation sequence for
1368      ctrl/ cost/ ecco/ in packages_... routines
1369    
1370    checkpoint50g_post
1371    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
1372      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
1373      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
1374        made the default because of faster convergence than ADI
1375    
1376    checkpoint50f_post
1377    o exf totally restructured
1378      - replaced all exf_set_ routines by one generic exf_set_gen.F
1379        and made sure it's still differentiable
1380      - split exf_getffields.F into new exf_bulkformulae.F
1381      - exf_inscal_/exf_outscal_ suffixes consistent with field names
1382      - updated adjoint/makefile and relevant verif. accordingly
1383    
1384    checkpoint50f_pre
1385     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
1386          + change Evap over land. (update aim.5l_cs output)
1387     o added missing .cvsignores and made uniform across expts
1388     o changed configuration of tidal_basin_2d expt
1389     o added pkg/debug functions for tracing code in fatal crashes
1390     o tidied pkg/monitor to use MONITOR_OPTIONS.h
1391     o new fn in pkg/monitor to stop model if solution grows too big
1392     o removed lots of single quotes from comments
1393    
1394    checkpoint50e_post
1395    o make KPP work with PTRACERS
1396     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
1397       nearly a copy of kpp_transport_s
1398     - there is no analogue to SurfaceTendencyS, so I have to use
1399       gPtr(of the surface layer) instead
1400    o add a new platform SunFire+mpi (SunFire 15000) to genmake
1401    checkpoint50e_pre
1402    
1403    checkpoint50d_post
1404    o change kpp output from multiple-record state files to single-record state
1405      files analogous to write_state.F
1406    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
1407      analogous to the cg2d-related output.
1408    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
1409      so that writing to internal file fn (with length 512) fails.
1410    checkpoint50d_pre
1411    
1412    checkpoint50c_post
1413    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
1414    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
1415    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
1416    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
1417    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
1418    
1419    checkpoint50c_pre
1420    Merging from release1_p13:
1421    o bug fix for pkg/seaice dynamic solver
1422    o Added SEAICE_initialHEFF to pkg/seaice
1423    
1424    checkpoint50b_post
1425    o store u*,v* in gU,V instead of in guNm1,gvNm1
1426    o in order to put the momForcing out of the Adams-Bashforth:
1427      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
1428      to timestep.F
1429    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
1430    o re-generate output for highly sensitive test-exp:
1431       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
1432    
1433    checkpoint50b_pre
1434    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
1435    o corrected CPP option mismatch in exf_Bulk... functions for case
1436      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
1437    
1438    checkpoint50a_post
1439    o Bug fix for merging between c50 and KPP.
1440      ikey was passed from thermodynamics to kpp_calc via
1441      common block rather than being recomputed in kpp_calc,
1442      in contradiction with new key itdkey.
1443      New key ikppkey created, and tamc.h headers updated.
1444    
1445    checkpoint50
1446    - 2nd step of merge with ecco-branch:
1447      merge changes in ecco-branch back into main trunk
1448    - bug fix in find_alpha
1449    - more storing in gmredi_calc_tensor.F, kpp_routines.F
1450    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
1451    - merged some sliced AD support routines
1452    
1453    checkpoint49
1454    merged from ecco-branch:
1455    o exf:
1456      - Enable initialisation of forcing fields to constant
1457        (runtime) values.
1458      - in exf_getffields.F
1459        Reduce i-/j-loop to interior domain, discarding overlaps.
1460        That also fixes wrong TAF-key computations for key_1, key_2
1461        with bulf formulae.
1462      - exf_init.F modify #ifdef for exf_init_evap
1463      - exf_getffieldrec.F, ctrl_getrec.F
1464        The following INT-usages are not safe:
1465          fldsecs  = int(fldsecs/fldperiod)*fldperiod
1466          fldcount = int(fldsecs/fldperiod) + 1
1467        and were modified.
1468    o autodiff: checkpoint_lev...
1469      - updated storing for bulk formulae (some arrays were missing)
1470      - added state for seaice package
1471      - synchronized with main branch
1472    o DIVA:
1473      Modif.s in
1474      - the_main_loop.F
1475      - the_model_main.F
1476      and added cost_final_restore.F cost_final_store.F
1477      o With these changes, it is possible to fully separate
1478        the first forward run to compute the cost function (mdthe_main_loop)
1479        and adjoint runs over individual DIVA intervals (adthe_main_loop)
1480        into separate model executions.
1481        This enables better tuning of DIVA to given queue sizes.
1482      o Loss of cost function value in consecutive DIVA runs is
1483        fixed by storing to 'costfinal' file.
1484      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
1485        beginning/end of adjoint integration is accounted for.
1486      The current changes apply to TAF-1.4.26.
1487      TAF has one remaining bug, requiring one manual change
1488      (see MITgcm manual).
1489    o cal: synchronized between MAIN and ecco-branch
1490    
1491    checkpoint48i_post
1492    o Changes to restore differentiability of code w.r.t. previous tag
1493      (mostly adding new routines to make list and replacing
1494      pressure by totPhiHyd).
1495    o Updated and merged grdchk package
1496      - has both ADM and TLM checks
1497      - works for single- and multi-proc.
1498      - output cleaned
1499      - worked successfully for parallel DIVA
1500    o genmake:
1501      - Adding -platform=SP4
1502      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
1503    o Modif. for DIVA:
1504      ctrl_unpack should not be called in intermediate DIVA interval.
1505      (similar thing would apply for active files such as
1506      tbar, sbar, psbar, which should not be reinitialised;
1507      only relevant for ecco-branch)
1508    
1509    checkpoint48h_post
1510    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
1511    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
1512    o Added SEAICE_initialHEFF to pkg/seaice
1513    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
1514    
1515    checkpoint48g_post
1516    --- EOS:
1517    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
1518      store total Potential in totPhyHyd for diagnostics & EOS.
1519    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
1520    --- Pressure/geopotential gradient:
1521    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
1522    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
1523      ( changes results of global_ocean_pressure )
1524    o NLFS + z-coord.: add eta*Rho' contribution.
1525    o accurate phiHyd when using interface-W at the middle between 2 centers
1526     ( changes results of ideal_2D_oce )
1527    o includes r* 2nd term in potential gradient.
1528    
1529    checkpoint48f_post
1530    Merging from release1_p12:
1531    o Modifications for using pkg/exf with pkg/seaice
1532      - improved description of the various forcing configurations
1533      - added basic radiation bulk formulae to pkg/exf
1534      - units/sign fix for evap computation in exf_getffields.F
1535      - updated verification/global_with_exf/results/output.txt
1536    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
1537      (SBO) core products, including oceanic mass, center-of-mass,
1538      angular, and bottom pressure (see pkg/sbo/README.sbo).
1539    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
1540      to avoid negative values in shallow regions.
1541      - updated verification/natl_box/results/output.txt
1542      - updated verification/lab_sea/results/output.txt
1543    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
1544    o Added useSingleCpuIO option (see PARAMS.h).
1545    o Updated useSingleCpuIO option in mdsio_writefield.F to
1546      work with multi-field files, e.g., for single-file pickup.
1547    o pkg/seaice:
1548      - bug fix in growth.F: QNET for no shortwave case
1549      - added HeffFile for specifying initial sea-ice thickness
1550      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
1551    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
1552      kpp_transport_t.F, forward_step.F, and the_main_loop.F
1553    o pkg/seaice:
1554      - adjoint-friendly modifications
1555      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
1556    
1557    checkpoint48e_post
1558    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
1559    o dynamics: change definition of computational domain & adapt mom_fluxform
1560      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
1561    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
1562        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
1563        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
1564        global_ocean.90x40x15 global_with_exf global_ocean_pressure
1565        inverted_barometer solid-body.cs-32x32x1
1566      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
1567    
1568    checkpoint48d_post
1569    o in preparation for r*:
1570     a) use pre-computed gradient of hydrostatic potential:
1571        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
1572     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
1573        => affects results of glob_oce_pressure (different truncation error)  
1574      update output.txt of ideal_2D_oce & global_ocean_pressure
1575    
1576    checkpoint48d_pre
1577    o in preparation for r*:
1578      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
1579      pass the 2 comp. of the grad. as arguments to momentum S/R.
1580      but for the moment, only used if it does not change the results.
1581    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
1582    
1583    checkpoint48c_post
1584    Modifications in treatment of initial flux forcing controls
1585    to avoid extra storing of flux fields.
1586    
1587    checkpoint48c_pre
1588    o Added tidal_basin_2d experiment (currently 1D!)
1589    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
1590    
1591    checkpoint48b_post
1592    o r* coordinate added in #ifdef NONLIN_FRSURF block.
1593     (modification to pressure gradient not yet implemented)
1594    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
1595      (for U & V) that are used for vertical advection of momentum.
1596    
1597    checkpoint48a_post
1598    o In preparation for r*, use temp. array to compute vertical transport
1599       in flux-form momentum pkg. => change results of few test-exp.
1600      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
1601                        lab_sea, natl_box & plume_on_slope
1602    
1603    checkpoint48
1604    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
1605    
1606    checkpoint47j_post
1607    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
1608    o moved adexch from forward_step to addummy_in_stepping
1609    o added exch in ctrl_map_...
1610    o aveFreq.=0. at end of cost_final to avoid overwrite in
1611      reverse checkpointing loop
1612    o Yet more changes in gmredi:
1613      * adgmredi_calc_tensor
1614        avoiding all recomputation of gmredi_slope_limit
1615      * adgmredi_x/y/rtransport
1616        added flag for excessive storing to avoid recomp. of
1617        u/v/rtans, dTdx/y/z
1618        -> this is not really necessary and very memory-consuming
1619      * adgmredi_slope_psi:
1620        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
1621      * gmredi_slope_limit
1622        re-activated full calculation of taperfct for case 'ac02'
1623    o updating verification/ adjoints of carbon, global_ocean.90x40x15
1624    
1625    checkpoint47i_post
1626    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
1627    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
1628      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
1629    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
1630    o gmredi: fix few bugs.
1631    
1632    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
1633    This will be a good checkpoint to plug into the ecco-branch.
1634    o few modif.'s to get latest version adjointed
1635      (mainly kick out code in ini_linear_phisurf)
1636    o modif's to run adjoint with exactConserv
1637    o case GM_BOLUS_ADVEC should be cleaned
1638      S/R gmredi_slope_psi should be cleaned
1639    o verification/carbon now has exactConserv=.TRUE.
1640    
1641    checkpoint47g_post
1642    o time-average AIM output: becomes independent from statvars time-average
1643      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
1644    o After TAF bug fix:
1645      Tested adjoint of gmredi package.
1646      Tests were done with checkpoint47 rather than with latest
1647      checkpoint47f_post since the latter is broken for the adjoint
1648      verification/carbon/ contains both ADM and TLM gradient checks.
1649    Here they are, before they get changed/lost/stolen.
1650    Mostly modif.'s to fix numerical sensitivities.
1651    Gradient checks OK for
1652    - GM_taper_scheme:
1653      * clipping
1654      * ac02
1655      * linear
1656      * glw91
1657      * dm95
1658      * ldd97
1659    - GMREDI_OPTIONS:
1660      * GM_VISBECK_VARIABLE_K
1661      * GM_NON_UNITY_DIAGONAL
1662      * GM_EXTRA_DIAGONAL
1663      * GM_BOLUS_ADVEC
1664    in conjunction with data.gmredi parameters to be checked in
1665    in a few minutes under verification/carbon/code/
1666    
1667    checkpoint47f_post
1668    Merging from release1_p10:
1669    o modifications for using pkg/exf with pkg/seaice
1670      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
1671        and SEAICE_EXTERNAL_FLUXES
1672      - pkg/exf CPP options EXF_READ_EVAP and
1673        EXF_NO_BULK_COMPUTATIONS
1674      - usage examples are Experiments 8 and 9 in
1675        verification/lab_sea/README
1676      - verification/lab_sea default experiment now uses
1677        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
1678    
1679    checkpoint47e_post
1680    o created a tag prior to creating a branch
1681    
1682    checkpoint47d_post
1683    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
1684      at the bottom boundary had an erroneous half slip boundary condition
1685    o added bottom drag and no slip boundary condition capabilities to
1686      oceanic pressure coordinates code
1687    o added new verification experiment global_ocean_pressure, this experiment is
1688      also described in the tutorial section of the manual
1689    checkpoint47d_pre
1690    
1691    checkpoint47c_post
1692    o Added a verification experiment for a global cubed-sphere ocean run
1693      -  verification/global_ocean.cubed32x32x30
1694      -  uses pkg/therm_seaice and pkg/bulk_forcing
1695    
1696    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
1697    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
1698      when using P-coordinate; only implemented for atmospheric config.
1699    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
1700      NOTES: requires option NONLIN_FRSURF to be "#define".
1701    o update advect_xz/results/output.txt (left from checkpoint44g_post)
1702    
1703    checkpoint47b_post
1704    Merging from release1_p9:
1705    o pkg/seaice
1706      - removed GOTO's and added taf directives
1707      - double precision constants to reduce the g77 (Linux)
1708        to F77 (SGI) differences reported in release1_p8
1709    o tools/genmake
1710      - added SGI options
1711    o verification/testscript
1712      - updated to that of checkpoint47a_post
1713    o verification/global_ocean.90x40x15/input/eedata
1714      - modified for SGI f77 compatibility
1715    o verification/lab_sea
1716      - added description of sea-ice model
1717      - added missing matlab routines
1718      - added test of thermodynamics parallelization
1719    
1720    checkpoint47a_post
1721    o new pkg: aim_v23
1722     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
1723       for now, keep the same surface forcing as before.
1724     - Part-Cell implemented into AIM; check that Heat & Water are conserved
1725     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
1726     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
1727    o add diagnostic of surface correction term in monitor output
1728    
1729    o bulk_force and therm_seaice
1730    - Two packages:  bulk_force (Bulk forcing)
1731      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
1732    - Earlier integration from Stephaine Dutkiewicz
1733      and Patrick Heimbach.
1734    - Two ifdef statements for compile time,
1735       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
1736    
1737    checkpoint47
1738    differentiable version of checkpoint46n_post
1739    o bug fix in quasihydrostaticterms
1740    o * "clean" adjoint code (in terms of extensive recomputations)
1741        can now be obtained for all GMREDI options (i.e. for
1742        - GM_VISBECK_VARIABLE_K
1743        - GM_NON_UNITY_DIAGONAL
1744        - GM_EXTRA_DIAGONAL
1745        - GM_BOLUS_ADVEC )
1746      * However, wrong gradient check problem remains unsolved.
1747      * New CPP options have been introduced for different
1748        tapering schemes
1749    o external_fields_load now part of differentiation list
1750    o pressure needs multiple storing;
1751      would be nice to have store_pressure at beginning or
1752      end of forward_step, e.g. by having phiHyd global (5-dim.)
1753      (NB: pressure is needed for certain cases in find_rho,
1754      which is also invoked through convective_adjustment).
1755    o recomputations in find_rho for cases
1756     'JMD95'/'UNESCO' or 'MDJWF' are OK.
1757    o #define ATMOSPHERIC_LOADING should be differentiable
1758    o ini_forcing shifted to begining of initialise_varia
1759    o Incorporating QNVS line search routines into MITgcm
1760      (this is separate code, and therefore not under pkg)
1761      lsopt/, optim/
1762    o Updated verification/carbon/
1763      - #define GM_VISBECK_VARIABLE_K
1764      - GM_taper_scheme    = 'ldd97'    
1765    
1766    checkpoint46n_post
1767    Merging from release1_p8:
1768    o verification/natl_box:
1769      updating new external_fields_load routine
1770    o New package: pkg/seaice
1771      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
1772      The sea-ice code is based on Hibler (1979-1980).
1773      Two sea-ice dynamic solvers, ADI and LSR, are included.
1774      In addition to computing prognostic sea-ice variables and diagnosing
1775      the forcing/external data fields that drive the ocean model,
1776      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
1777      The implied surface heat flux is then stored in variable
1778      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
1779      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
1780      non-local transport term.  Because this call precedes model
1781      thermodynamics, temperature under sea-ice may not be "exactly" at
1782      the freezing point by the time theta is dumped or time-averaged.
1783      N.B.: fairly large differences in accuracy occur across
1784            different platforms/compilers; comparison between
1785            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
1786            generated output gives:
1787       T           S           U           V
1788      C D M    c        m  s        m  s        m  s        m  s
1789      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
1790      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
1791      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
1792    
1793      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
1794    o GAD:
1795      - generated new common blocks to account for call of
1796        same gad routines with differing traceridentities
1797        (needed to modify tracerIdentity indices in GAD.h)
1798      - generated separate common blocks for case useCubedSphereExchange
1799        (Department of Futurology)
1800      - parameter lists to gmredi_?transport: added tracerIdentity
1801      - added new key indices to tamc.h
1802    o external_fields_load:
1803      - added this routine to TAF list
1804      - needed to make some common blocks global and additional storing
1805        along the same lines as exf package (checkpoint_lev?_directives.h)
1806    o exf:
1807      updated external forcing package
1808      - bug fixes carried over from ecco-branch
1809        (missing OBCS_OPTIONS.h in two routines)
1810      - enable easy to use "no forcing".
1811      - added exf I/O for atmospheric loading
1812      - added exf I/O for runoff data
1813      - transfered scaling between exf <-> MITgcm to exf namelist
1814    o Adding new verification experiment global_with_exf.
1815      This verification experiment is almost identical to the
1816      global_ocean.90x40x15 experiment, except that it uses
1817      the exf (and cal) package instead of the
1818      external_fields_load routine (cf README file).
1819    
1820    checkpoint46m_post
1821    o modified testscript to return -- when there are no lines of "%MON" output
1822    o added new flag "quasiHydrostatic" for QH mode
1823      and new routine quasihydrostaticterms()
1824    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
1825      New routine: mom_u_coriolis_nh()
1826    o fixed sign of non-hydrostatic metric terms in u and v equations.
1827      Depend on correct sign of gravitySign.
1828    o added work.pc* to .cvsignore in aim directories using ifc
1829    o introduced flag for controllin non-hydrostatic metric terms
1830    o removed gravitySign from PARM04
1831    o switched to g77/ifc from pgf77 in aim experiments
1832    
1833    checkpoint46l_post
1834    o made convective adjustment work with pressure coordinates:
1835     - changed the direction of k-loop in convective_adjustment.F for the
1836       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
1837     - adjusted the reference pressure k-index in convective_adjustment.F
1838     - adjusted the convection condition in convect.F (in analogy to
1839       calc_ivdc.F)
1840     - convective_adjustment no longer computes anything on the halos
1841     - removed the warnings about negative salinity from find_rho.F and
1842       find_alpha.F; instead the new routine look_for_neg_salinity, called
1843       at the beginning of find_rho, find_alpha, and find_beta, does a
1844       check of the entire slice, if CPP-option
1845       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
1846    checkpoint46l_pre
1847    
1848    checkpoint46k_post
1849    o fixed the verification/global_ocean.90x40x15 experiment:
1850     - new bathymetry (the world according to A., JMC, and M.)
1851     - new initial fields and forcing fields (*.bin files)
1852     - new POLY3.COEFFS (for the next release one should switch to a full
1853       equation of state: JMD95P or MDJWF)
1854     - fixed several errors and redundancies in the data file
1855     - experiment uses looped cells
1856     - added matlab directory with diagnostic scripts for plotting of output
1857    
1858    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
1859     - read AIM physics parameters from a file (data.aimphys)
1860     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
1861    
1862    checkpoint46j_post
1863    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
1864    o move wVel computation at the end of the time step, in S/R integr_continuity
1865    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
1866    o update timeave pkg for wVel diagnostic.
1867    checkpoint46j_pre
1868    
1869    checkpoint46i_post
1870    o Clean up AIM package (and keep the results unchanged):
1871      include CPP_OPTION and use IMPLICT NONE in all routines ;
1872      declare all the variables _RL ; use _d 0 for all numerical constants.
1873      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
1874    
1875    checkpoint46h_post
1876    o cleaned up the use of rhoNil and rhoConst.
1877      - rhoNil should only appear in the LINEAR equation of state, everywhere
1878        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
1879        and the dynamical equations are all divided by rhoConst
1880    o introduced new parameter rhoConstFresh, a reference density of fresh
1881      water, to remove the fresh water flux's dependence on rhoNil. The default
1882      value is 999.8 kg/m^3
1883    o cleanup up external_forcing.F and external_forcing_surf.F
1884      - can now be used by both OCEANIC and OCEANICP
1885    checkpoint46h_pre
1886    
1887     Added code to convert surface volume flux (fresh water) into
1888     a mass flux when using P coordinates in the ocean (OCEANICP).
1889     Note: It assumes you have set rho0=rhoConst=density of fresh water.
1890    
1891    checkpoint46g_post
1892    o Include a new diagnostic variable phiHydLow for the ocean model
1893      - in z-coordinates, it is the bottom pressure anomaly
1894      - in p-coordinates, it is the sea surface elevation
1895      - in both cases, these variable have global drift, reflecting the mass
1896        drift in z-coordinates and the volume drift in p-coordinates
1897      - included time averaging for phiHydLow, be aware of the drift!
1898    o depth-dependent computation of Bo_surf for pressure coordinates
1899      in the ocean (buoyancyRelation='OCEANICP')
1900      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
1901        Theta, Salinity, and Pressure in the parameter list. This routine is
1902        presently contained in find_rho.F. This routine does not give the
1903        correct density for 'POLY3', which would be a z-dependent reference
1904        density.
1905    o cleaned up find_rho
1906      - removed obsolete 'eqn' from the parameter list.
1907    o added two new verification experiments: gop and goz
1908      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
1909    checkpoint46g_pre
1910    
1911    checkpoint46f_post
1912    o Enable tangent linear (forward mode) gradient checks:
1913      - extended active file handling to g_... files
1914      - added TANGENT_SIMULATION to theSimulationMode
1915      - extended grdchk package accordingly
1916    o added tangent linear setup in verification/carbon/code_ftl
1917    o added adjoint setup in verification/front_relax/code_ad
1918    
1919    checkpoint46e_post
1920    o Added new equation of state -> MDJWF
1921      - EOS of McDougall et al., 2002, JAOT, submitted
1922      - caveat: the equation of state is only valid for a smaller (more
1923        realistic?) range of values than JMD95P/Z and UNESCO
1924      - added masks to the calculation of pressure in store_pressure
1925      - added more check values for density in check_eos (ini_eos.F), some of
1926        the old check values are out of the range of the MDJWF-eos, so don't
1927        expect perfect matches for those
1928    checkpoint46e_pre
1929    
1930    checkpoint46d_post
1931    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
1932      'OCEANICP', also initialised field pressure correctly in ini_eos in the
1933      case of pressure coordinates. eosType='JMD95Z' in
1934      combination with buoyancyRelation='OCEANICP' now causes an error.
1935    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
1936      in find_alpha/beta.
1937    checkpoint46d_pre
1938    
1939    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
1940      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
1941    
1942    checkpoint46c_post
1943    o Changes necessary for ocean in p-coordinates
1944     -  Added new buoyancy relation = 'OCEANICP'
1945     -  Added new parameters = gravitySign (this used to be contained inside
1946        the factor dRdZ which I added when we first switched to R coordinates).
1947     X GM/Redi is not compatible (yet)
1948     X bottom drag and no-slip need to be debugged.
1949    checkpoint46c_pre
1950    
1951    checkpoint46b_post
1952    o Added new equation of state -> JMD95Z and JMD95P
1953      - EOS of Jackett and McDougall, 1995, JAOT
1954      - moved all EOS parameters into EOS.h
1955      - new routines ini_eos.F, store_pressure.F
1956    o Added UNESCO EOS, but not recommended because it requires
1957      in-situ temperature (see JMD95)
1958    o Modified formatting for knudsen2.f in utils/knudsen2 and added
1959      unesco.f to be used with POLY3
1960    checkpoint46b_pre
1961    
1962    checkpoint46a_post
1963    o Added (atmospheric) pressure loading
1964      - new field in FFIELDS.h, etc...
1965      - new cpp flag ATMOSPHERIC_LOADING
1966    o Changed hFacC to _hFacC in calc_phi_hyd.F
1967    o Added SHORTWAVE_HEATING to some files for consistency
1968    checkpoint46a_pre
1969    
1970    checkpoint46
1971    further merges from release1_p5
1972    o new ctrl package
1973      - adopted from ECCO environment to enable optimization
1974      - added Eliassen Palm fluxes to controls
1975    o added Eliassen Palm flux controls to gradient check package
1976    o cost package
1977      - Compatible with new ctrl package
1978      - added Eliassen Palm cost hooks
1979      - modif's of existing cost functions
1980    o Adjoint-related bug fixes in kpp:
1981      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
1982      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
1983    o autodiff package
1984      - flow directives:
1985        + new for S/R do_the_model_io
1986        + enhanced for S/R checkpoint
1987        + new gmredi.flow
1988      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
1989        disable adcommon.h/g_common.h by default.
1990      - fixed problem for adjoint of global_max
1991    o modified verification/carbon/
1992    o New setup for adjoint of global_ocean
1993    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
1994    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
1995    o incorporated hooks for sponge layer code (external_forcing.F)
1996    
1997    checkpoint45d_post
1998    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
1999    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
2000      (affects plume_on_slope "cg2d" output)
2001    o add new parameter deltaTfreesurf for free-surface time stepping
2002    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
2003  o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B  o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
2004  o change phiMin in exp1 (to agree with documentation)  o change phiMin in exp1 (to agree with documentation)
2005  o add new flags:  o add new flags:

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