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revision 1.60 by jmc, Sun Feb 10 20:07:14 2002 UTC revision 1.553 by jmc, Wed Sep 28 00:20:52 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 minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
8      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
9    o add brackets in multi-terms sum to get same truncation, independent of
10      the face number (manage to get exactly same value of gU,gV at the cs-edge)
11      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
12    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
13      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
14      a maximum grid-scale Reynolds number.  Also, changes all length calculations
15      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
16      Suggested values of viscosity parameters found in mom_calc_visc.
17      Many new viscosity diagnostics available.
18    
19    checkpoint57s_post
20    o Add clearing-house for viscosity calculations, mom_calc_visc and
21      correct numerous bugs in LeithD and Smagorinsky discretizations.  
22      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
23      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
24      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
25      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
26      The Strain-Tension form is now called with useStrainTensonVisc=.true.
27      ViscAhStrain and viscAhTension are now retired.
28    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
29    o In response to JMC's bug report, genmake2 now ignores any soft-links
30      that it finds in the *current* directory when searching for files.
31      Soft-links found in any other source directories will still work as
32      they did before.
33    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
34      a C routine to unlimit the stack size
35    o mnc-ify pkg/aim snapshot vars
36    o mnc-ify pkg/land as requested by Daniel
37    o various changes to mnc including:
38      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
39      - output can now be grouped so that all files within a group
40          change the ITER portion of their names in lock-step together
41      - can now read ("global") PER-FACE (in addition to PER-TILE) files
42          and works with both EXCH1 and EXCH2 (but needs more testing)
43      - writing works for all verification test cases w/ g77 on Linux
44    
45    checkpoint57r_post
46    o make MNC variable initialization happen earlier
47    o add diagnostics for (almost) each term of the momentum Eq.
48    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
49    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
50    o remove MINIMAL_TAVE_OUTPUT option ;
51      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
52    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
53      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
54    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
55    o add time-dependent SST, SSS control
56    o cost terms in ecco/ modularized (new cost_generic.F)
57    o cost_averages routines are modularized (new cost_averagesgeneric.F)
58    o new infrastructure for seaice model vs. obs misfits in seaice/
59      * driver from the_main_loop.F is seaice_cost_driver.F
60      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
61      * gradient check in Exp. 6a of natl_box_adjoint/
62    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
63      (see README file)
64    
65    checkpoint57q_post
66    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
67    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
68      - bug was reported by Jean-Michel and Ian Fenty
69    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
70      update exp. cpl_aim+ocn output.
71    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
72      Needed for high-res. runs with large global files
73      to be able to limit tapelev size
74    o Changed some tests for adjoint:
75      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
76      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
77      * global_ocean.90x40x15/ back to default 3-level checkpointing
78    o Modifications to enable scripted COMMON to MODULE conversion
79      * verification/OpenAD/code/ has necessary scripts and description;
80      * converts, compiles and runs successfully;
81    
82    checkpoint57p_post
83    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
84    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
85      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
86    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
87    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
88      (was already the case for dissipation with mom_vecinv,
89       and also the case for grad.PhiHyd when staggered-timeStep)
90      This will allow to put dissipation out-off the AB time-stepping.
91     Unfortunately, affects truncation error. Update output of exp. that "fails"
92      (cg2d matching number) and leave the others for later: front_relax(10),
93      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
94      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
95    
96    checkpoint57o_post
97    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
98      (2) its ready to be documented during the 20050801 DocFest
99    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
100      for ideal_2D_oce and lab_sea on linux_ia32_g77
101    o set to #undef CTRL_SET_OLD_MAXCVARS_30
102      in global1x1_tot/code_seaice_adj to access indices 32, 33
103      (worth another tag)
104    
105    checkpoint57n_post
106    o adding precip control xx_precip 32
107    o adding swflux control xx_swflux 33
108    o Replacing 10 forcing penalty cost routines by 1 generic.
109    o Implementing partitioning in time-mean and variable adjustment
110      for atmos. state.
111    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
112    o in natl_box_adjoint:
113      * updated exp 1 to 10
114        (but does not have time-mean vs. variable split results yet)
115    o updated global1x1/*_seaice_adj/
116      to incorporate latest changes
117    o enable useSingleCpuIO for mdsio vector routines
118      (applies in particular to tapelev I/O)
119    o removed inefficient K-loop in all active_file*control*.F
120    
121    checkpoint57m_post
122    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
123      and advect_cs (use EXCH-2 and standard cs-32 grid files).
124    o pkg/exch2: filling of face-corner halo regions is optional
125      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
126    
127    checkpoint57l_post
128     tag before updating tutorials (pre-release-2)
129    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
130       for output and interpolation of input fields onto model grid)
131    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
132       Affects results of exp. rotating_tank ; update output.txt.
133    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
134          and taking the square quantity and/or using a fraction-weight field.
135    o fix aim_diagnostics_init.F mate numbers.
136    o add mnc output capability to diagnostics/diagstat and update
137      our cvsignore files for the ACSII output generated
138    
139    checkpoint57k_post
140    o lab_sea now uses diagnostics package and provides a suite of
141      new EXF diagnostics output.
142    
143    checkpoint57j_post
144    o exf
145      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
146        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
147        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
148      * extended diagnostics output
149        - now includes all EXF variables
150        - hs, hl moved to common block
151        - separate S/R for diagnostics, called after ctrl vector is added
152        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
153        - EXFqnet contains true Qnet (i.e. includes qsw)
154      * updated verif. lab_sea, global_with_exf
155      * Rearranging hflux (exf_mapfields -> exf_getforcing)
156        to ensure that diagnostics sees a true EXFqnet
157    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
158    o diagnostics pkg: change pointers so that 1 diagnostic can be used
159      several times with different frequencies.
160    o mnc-ify the thsice package as requested by Daniel Enderton
161      - the monitor--MNC output needs work
162      - many attributes need to be added (most are currently blank)
163    o mnc-ify theaim_v23 package as requested by Daniel Enderton
164      - many attributes need to be added (most are currently blank)
165    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
166    o add Sadourny like discretization to the 4th.O vorticity advection scheme
167    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
168      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
169         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
170    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
171     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
172    
173    checkpoint57i_post
174    o Diagnostics package was changed: diagnostic allocation is now deactivated
175      by setting an empty file name in the namelist (used to be by setting 0 frequency)
176    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
177      add 1rst Order upwind vertical Shear.
178    o add a quick fix for A/B checkpointing in OFFLINE mode
179    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
180      end-run around the C/Fortran linking horror in eesup/src/timers.F
181    o added pkg/runclock: allows user to terminate run based on wall clock
182    o added non-hydrostatic scaling parameter: nh_am2
183    o pkg/my82: futile attempt to make results compiler-independent by adding
184      some "_d 0", etc. no effect.
185    o for mnc output, fill the 'T' coordinate var with myTime and create a
186      separate 'iter' variable for iteration count
187    o pkg/diagnostics:
188      add new capability: output of Global/Regional & per-level statistics ;
189      tested against monitor output (including land & thSIce) on various exp.
190    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
191    
192    checkpoint57h_done
193      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
194      data.diagnostics, data.gchem, data.ptracers) is done.
195    
196    o pkg/diagnostics: prepare for Global/Regional statistics.
197      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
198    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
199      and rename it: DIFFERENT_MULTIPLE
200    
201    checkpoint57h_post
202    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
203    o pkg/diagnostics: change output frequency, now in seconds (instead
204      of Nb of iterations). This requires to change data.diagnostics.
205    checkpoint57h_pre
206    
207    o in mnc, let the user create the output dir if both mnc_outdir_date
208      and mnc_outdir_num are false
209    o add fflags() to pkg/diagnostics which allows one to specify, on a
210      per-file basis, the file precision [default behavior is unchanged]
211    o added diagnostics to pkg/kpp, including computation of mixed layer
212      depth based on a temperature/density criterion
213    o updated verification/natl_box to test the new pkg/kpp diagnostics
214    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
215    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
216    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
217      not mnc -- this mistake was found by JMC and is now corrected
218    
219    checkpoint57g_post
220    o add Adams-Bashforth 3rd Order time stepping:
221      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
222      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
223    checkpoint57g_pre
224    
225    o make lambda[Theta,Salt]ClimRelax spatially varying
226      (default remains spatially uniform constant based on tau)
227    o added new control variables
228      * init. uVel, vVel, etanN
229      * lambda[Theta,Salt]ClimRelax
230    o separate masks used for ctrl_pack/unpack 'from write_grid' output
231      (suggested by G. Forget)
232    
233    checkpoint57f_post
234    o add parameter "baseTime" = model base time = time at iteration zero
235      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
236      account for baseTime shift
237    o move Coriolis arrays from PARAMS.h to GRID.h
238    checkpoint57f_pre
239    
240    o mnc-ifying the seaice package
241    o introduced an alternative length scale calculation for use in the limiting
242      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
243    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
244    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
245      as well as grad(vort3).  Made it compatible with both approximate form
246      for the cubed sphere and full form of these gradients.  Added flag
247      useFullLeith to select between approximate and full form.  
248    o add "d0" in getcon.F to reduce differences between compilers/platforms
249      update output.txt of exp. fizhi-gridalt-hs
250    o change port_rand funtion to allow to set the seed.
251    o fix obscure MNC bug involving conversion between reals and integers
252      - it caused no problems with certain (eg. gcc, ifc) compilers but the
253        new version is now more standards-compliant
254    o adjoint-related modifications
255      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
256      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
257      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
258    
259    checkpoint57e_post
260    o Adding eddy stress controls a la Ferreira et al.
261    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
262    
263    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
264      update output.txt of exp. fizhi-gridalt-hs
265    o add more "Z" dimensions and associated coordinate vars to MNC
266    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
267    o parameter calendarDumps: when set, approximate months (30-31 days) and years
268      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
269      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
270      months and years.  Requires pkg/cal.
271    o diagnostics: add pickup functionality
272      - off by default for backwards compatibility
273      - current version only uses MDSIO -- MNC will be added
274    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
275    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
276    
277    checkpoint57d_post
278    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
279    o modify verification/ideal_2D_oce so that it tests the creation of mnc
280      output from the diagnostics package
281    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
282    o make genmake2 more portable by using ".$FS" instead of ".f" for more
283      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
284    o add coordinate variables to the MNC output from the diagnostics package
285    o change MNC-flags default value: true when useMNC=TRUE
286    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
287      the ability (off by default) to read the grid information using MNC
288    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
289    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
290    o do snap-shot diagnostics at the middle of the time-interval (instead of
291      at the end).
292    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
293      new test for AIM with thSIce + slab-ocean
294    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
295    o move state variable diagnostics to the beginning of the time step ;
296      (note: still needs some work specially for snap-shot diagnostics)
297      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
298    
299    checkpoint57c_post
300    o Change testing option (-ieee) to get closer agreement between g77 & ifort
301    o generate new output.txt files on faulks with g77 & the new -ieee option
302    checkpoint57c_pre
303    
304    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
305      update output.txt of exp. global_ocean.90x40x15
306    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
307      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
308    o add saltFlux(+File) forcing capability with periodicExternalForcing
309    o allow to use pkg diagnostics for GM-Redi & ThSIce output
310    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
311    o improvements for the MNC output from DIAGNOSTICS:
312      - correct handling of the unlimitied dimension
313      - all dims now have associated coordinate variables
314      - variables located at U, V, and Corner ("Z") points are now written
315        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
316        *all* data points are output
317    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
318    o added pkg/seaice/seaice_monitor.F
319    o mdsio_readfield.F can now read files visible only to master MPI process.
320    o pkg/seaice: some test code for ice-modified ocean stress
321    o exf_getffields interpolation defaults to bilinear for all scalar forcing
322      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
323      spurious negative numbers for precipitation and humidity.  Will cause
324      some small numerical differences for integrations using pkg/exf/exf_interp.F.
325    o pkg/ctrl/
326      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
327        May be enabled via doPackDiag
328      *  introduce z-scaling of
329         + gradient (doZscalePack) and
330         + control (doZscaleUnpack)
331    o pkg/mdsio/
332      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
333      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
334    
335    checkpoint57b_post
336    o simplify options in diagnostics_fill arguments (remove weird combinations)
337    o fix MNC coordinate variables so that they now contain per-face index
338      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
339      general, EXCH2 grids are only aligned to a "local" coordinate system
340    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
341    o Implement instantaneous output within pkg diagnostics:
342      setting a negative frequency in data.diagnostics produces
343     "snap-shot" output (as opposed to time-average if freq > 0)
344    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
345      NOTE: change ptracer diagnostics name: use 2 characters to work with
346            more than 9 tracers. Add also diagnostics of advect & diffus flux.
347    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
348      becomes the coordinate variable for the 'T' dimension
349    o add CF-style coordinate variables to MNC
350      - just a first cut:  numbers are meaningless on the cubesphere and
351        missing along the T axis but otherwise it works!
352    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
353    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
354    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
355      this is based directly on what the model compute, so that the content of
356      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
357    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
358    o clean up build options files for SunOS, in particular
359      - remove -traditional from xmakedepend
360      - change -xarch=v9 to -xarch=native for f77
361      - restore use of make (not gmake)
362      - add CC=gcc if using g77
363    o changes per discussion of AM, JMC, & EH3 today:
364      - move redundant "grid" variables out of "state" -- in preparation of
365        creating proper CF-style coordinate variables and in recognition
366        that any/all grid variables can be easily copied (eg. w/NCO) from
367        the grid files into any of the other NetCDF files
368      - *always* output grid variables with MDSIO (this will eventually be
369        changed)
370      - output MNC grid file if useMNC is true
371    o every instance of _END_MASTER() has been found and replaced with
372      _END_MASTER( myThid ) in order to satisfy certain picky Sun
373      preprocessors
374    o re-arrange diagnostics pkg initialisation:
375     - allow each package to extend the available diagnostics list
376     - add some checking and fix small problems (multi-threaded, ...)
377     - new S/R diagnostics_fill (replace fill_diagnostics):
378       look through the short list of active diag. (instead of the long list)
379       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
380    
381    checkpoint57a_post
382    o this set of changes restores TAMC compatibility
383      tested for global_ocean.90x40x15 adjoint on trough
384      (what a pain)
385    
386    checkpoint57a_pre
387    o some modifs in tools/build_options for sunos
388    o call ctrl_pack for ctrl at end for optimcycle=0
389    
390    checkpoint57
391    o add horizontal bi-harmonic viscosity for vertical velocity
392      - new parameter viscA4W (defaults to viscA4)
393      - affects only non-hydrostatic code
394      - to be done: no-slip lateral boundary conditions
395    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
396    o implement Implicit Vertical advection for pTracers
397    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
398      (implemented also for implicit vertical diffusion & advection)
399    o OBCS: extend application of tracer open boundary conditions
400      to a strip beyond the boundary of width Olx/Oly
401    o add call monitor to TAF set of required calls (flow directives)
402      and include in natl_box_adjoint
403    o untangle a few ifdefs related to cost, ctrl, autodiff
404      untangel a few ALLOW_ECCO_OPTIMIZATION
405    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
406      (theta2, salt2 in ecco_cost_weights)
407    
408    checkpoint56c_post
409    o OBCS as control variables
410      - update ctrl_ad_diff.list, obcs_ad_diff.list
411      - remove balance of obcs controls from default
412      - fix index bug nobcs in ctrl_init
413      - fix dummy fields filen in ctrl_pack
414      - add dummy weights for obcs
415    o lsopt: comment out fort.94 output
416    o optim:
417      - remove unnecessary header files
418      - adjusted namelists
419      - add xerbla.F to Makefile
420    o exf:
421      - multiple modifications of exf_check_range
422      - unit change in exf_init_runoff from [m/year] to [m/s]
423    o mdsio:
424      - i/o-vector change debugLevel from debLevA to debLevB
425    
426    checkpoint56b_post
427    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
428      is called from DO_THE_MODEL_IO
429      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
430      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
431      - clean up PTRACERS_WRITE_TIMEAVE a little
432    o add another verification experiment that tests both the cfc-pkg and
433      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
434      reactive tendencies treated inline with regular timestepping
435    o testreport previously did a lousy job of comparing small numbers, so
436      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
437      implemented in the little c-progam tmp_cmpnum.c which is embedded in
438      testreport.
439    o ptracers_monitor: bug fix for MPI
440    
441    checkpoint56a_post
442    o GCHEM: finish reorganizating the package
443      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
444        (introduces another 3D-array for each passive tracer, but only if
445        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
446        gchemTendency is not needed because the timestep is done separately)
447      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
448      - GCHEM is now---more or less cleanly---separate from PTRACERS
449      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
450        so clear to me how that should be done in a general way.
451    o CFC: improve formatting of output in CFC_ATMOS
452    o PTRACERS:
453      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
454        that ALL experiments with ptracers enable can be checked. This makes
455        GCHEM_MONITOR obsolete.
456      - include a runtime parameter PTRACERS_monitorFreq that defaults to
457        monitorFreq
458      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
459    o add PTRACERS (PTR0[1-5]) to testreport output
460    o exf_check_range:
461      * default changed to .TRUE.
462      * will check values for niter0 if debLevA, every timestep if debLevB
463      * STOP in exf_check_range if 'out of range'
464      * range chosen generous to allow for potential extema
465      TBD: a version with stricter range
466           permitted range would be runtime parameters
467    o GMredi:
468      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
469      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
470      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
471    o GCHEM:
472      - move call to GCHEM_FORCING_SEP, so that it is now called before
473        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
474      - introduced a useGCHEM runtime flag and applied it everywhere.
475      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
476        this flag is now only visible within GCHEM-pkg routines.
477      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
478        be replaced by a 3D array that is computed before thermodynamics; for
479        this, the tracer ID iTracer had to be included into the parameter list
480        of ptracers_forcing
481      - set up forward_step to call gchem_forcing, that will replace
482        gchem_forcing_int in ptracers_forcing
483      - cleaning up
484    o small cleaning of exch2: remove files that are also in eesupp/src
485    
486    checkpoint56
487    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
488    o mnc: cleanup "full" files--fixes out-of-memory problem
489    o ECCO-GODAE
490      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
491      * fully merged and updated from SIO code
492        windstress sign change affects
493        - exf_inscal_[u/v]stress
494        - sign of xx_tau[u/v] adjustments
495        - signs in cost_scat
496      * ctrl_get_gen: avoid update of tau[u/v] for first few days
497      * natl_box_adjoint updated and compressed
498      * 2-level checkpoint switch added
499        (tested in EXP. 1 of natl_box_adjoint)
500      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
501    o SVD
502      * first complete, non-hacked version for SVD calculations
503      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
504        performed via direct access files admtlm_vector.it????
505        (via ctrl_[un]pack)
506      * optimcycle is used for ARPACK iteration counter
507        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
508      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
509        and add linear transforms where necessary
510      * controls are initial/final SST, SSS (can be extended; need to check
511        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
512    o mdsio: filename info to both stderr, stdout
513    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
514      from sign change
515    
516    checkpoint55j_post
517    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
518      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
519    o add consistent build directories and .cvsignore files to verification
520    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
521    o make all subroutines 30 or less characters in length for certain older
522      compilers to work (a thorough search only turns up two routines in
523      pkg/ptracers)
524    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
525      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
526    
527    checkpoint55i_post
528    o change arrays for total vertical diffusivity (2.D if explicit,
529      3.D if implicit) ; each ptracer uses its own background value.
530    o added mnc/NetCDF output capability to ocn_compon_interf
531      - added bits to verification/cpl_aim+ocn so that it can run on
532        ITRDA and other clusters without the mpirun "-wd" option
533    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
534      configuration
535    o give MNC the ability to create additional files rather than
536      exceeding a specified file size limit "MNC_MAX_FILESIZE"
537      - the default is just less than 2GB which is a practical limit
538        on many systems
539    o Compute the non-local term using either KPP vertical diffusivity (=default)
540       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
541    
542    checkpoint55h_post
543    o add verification test "vermix"
544    o remove all the *_ioinc flags and replace with the single global
545      outputTypesInclusive flag
546    o allow to set a vertical profile of vertical diffusivity for T & S
547    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
548    o useMNC moved from data.mnc to data.pkg
549    
550    checkpoint55g_post
551    o Renaming carbon AD experiments to comply with testreport conventions
552    o Updating adjoint of Held-Suarez hs94.1x64x5
553    o Fixing directives for non-ECCO forward_step, after ECCO directives
554      have been fixed to avoid recomp. of do_oceanic_phys
555      Works well for global_ocean.90x40x15,
556      but recomp. issue remains for carbon
557    o Updating adjoint output for natl_box_adjoint after
558      pkg/ecco has been modified (see taga c55d_post)
559    
560    checkpoint55f_post
561    o rename to timeave_init_fixed
562    
563    checkpoint55e_post
564    o some delicate re-shuffle of store directives to avoid one
565      extra call of do_oceanic_physics
566      affects ecco_the_main_loop.F, do_oceanic_physics.F
567      checkpoint_lev1_directives.h
568    o NB: this may break global_ocean adjoint temporarily,
569      but it is clear how to fix it. Will do later, need this now.
570    
571    checkpoint55d_post
572    o ECCO specific cost function terms (up-to-date with 1x1 runs)
573    o ecco_cost_weights is modified to 1x1 runs
574    o modifs to allow observations to be read in as
575      single file or yearly files
576    o enable to read exf forcing fields as either
577      single file or yearly files (flag useExfYearlyFields)
578    checkpoint55d_pre
579    
580    o switch between 2-level and 3-level checkpointing
581    o add ability of MNC to write local and "partial" (eg. 2D slices where
582      the full 3D field is never actually stored) arrays to NetCDF files
583      with the correct (that is, the complete multi-dimensional) set of
584      array indicies
585      - used in mom_vecinv() to write the diagFreq output
586      - tested (demonstrated) in verification/aim.5l_cs
587    o further mnc-ification
588      - add verification/lab_sea to the list with mnc setups
589      - fix undefined mnc v-names in cd_code
590      - add kpp to mnc output (both snapshot and timeave)
591    o non-hydrostatic code
592      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
593        in calc_gw.F
594      - defaults to viscAh
595      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
596        friction or Leith) in non-hydrostatic mode, as long as there is
597        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
598    o pkg/cost
599      extend simple cost functions to treat time mean quantities
600      (T,U,V) via cost_accumulate_state from cost_tile
601    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
602        be 2 times larger than the minimum size the advection scheme requires.
603        now get a perfect conservation of salt in advect_cs test-exp (updated)
604    o GGL90 (Gaspar's TKE mixed layer)
605      - add horizontal diffusion of TKE, requires exchanges in
606        do_fields_blocking_exchanges, horizontal diffusivity is zero by
607        default. In OPA there is no horizontal diffusion of TKE but the
608        mixing coefficients are computed from a horizontal average of TKE of
609        6 points or so. I think that diffusion has a little more physical
610        justification.
611      - clean up ggl90_calc in the hope of reducing memory usage (this hope
612        was in vain)
613      - mask tke-variable in ggl90_init
614    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
615    o fix biharmonic diffusion on CS-grid.
616    o more obcs stuff
617      - added obcs_external_fields_load as an alternative to the EXF-pkg option
618        for reading boundary values. This routine is called from
619        obcs_prescribe_read
620      - updated obcs_check
621      - changed sponge layer relaxation parameter units for days to seconds
622      - turned off sponge layer by default
623      - changed argument list of OBCS_CALC to myTime+deltaTclock
624      - fixed about 35 bugs in obcs_external_fields_load
625    
626    checkpoint55c_post
627    o obcs stuff
628      - new runtime flags useOBCSprescribe, useOBCSbalance
629      - re-arranged obcs_calc
630      - moved exf_getobcs to obcs_prescibe_read
631        obcs_prescibe_read is called after ORLANSKI stuff
632        and independent of it (executable can contain all).
633      - updated obcs_check
634      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
635        These may be necessary only if tangential velocities are
636        prescribed at OB, not sure, needs testing.
637    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
638      which simplifies the calls and passes the ifc check-bounds test
639    
640    checkpoint55b_post
641    o add a 2D scalar, Z location, exchange_2 routine.
642    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
643      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
644      affects advect_cs results (for the wrong reason): update output.txt
645    o use a more standard discretization for biharmonic viscosity ;
646     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
647      affects results of dome set-up: update output.txt
648    o fix gad_advection.F (CubedSphere part), back to version 1.23
649    o fix bug in mom_vi_del2uv.F (CubedSphere part).
650    
651    checkpoint55a_post
652    o merged code to
653      * prescribe/read time-dependent open boundaries
654        (works in conjunction with exf, cal)
655      * sponge layer code for open boundaries
656      * each boundary N/S/E/W now has its own CPP option
657        (healthy for the adjoint)
658    
659    checkpoint55
660    o up-to-date adjoint of previous breaks
661      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
662      - global_ocean_ebm: adjoint still needs fix (TLM ok)
663      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
664      - carbon: * remove tr1-related adjoint verification
665                * add ptracer as control variable
666    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
667      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
668    
669    checkpoint54f_post
670    o in verification/carbin/ remove experiment related to
671      ALLOW_PASSIVE_TRACER (array tr1 etc)
672      code_ad/ input_ad/ results_ad
673    
674    o add two new packages
675      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
676        + subject to optimization (memory)
677      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
678        + subject to reordering (many GOTOs in the original code)
679        + so far opps is called for every (i,j) point, and then operates in
680          the vertical; one may want to reorder the scheme in order operate in
681          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
682          fields)
683    o overhaul of IO so that we now have flags for MDSIO and/or MNC
684      - all verification tests compile and run with linux_ia32_g77
685      - defaults are compatible with current input files--nothing
686        should change if you were not previously using MNC
687      - MNC output has been added in numerous places (eg. timeave)
688        but there are still a few writes not yet do-able with MNC
689        (this is in progress)
690      - flags now allow for either/or/both use of MDSIO and MNC and
691        documentation will soon follow
692      - numerous small formatting cleanups for ProTeX
693    o add version info (via BUILD_INFO.h) to MNC and stdout
694    
695    checkpoint54e_post
696    o add two new packages
697      - pp81 (Packanowski and Philander, 1981), Richardson number and
698        stratification dependent mixing
699      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
700      - these scheme operate in a similar manner as KPP (without ghat, of
701        course), however there is only one diffusivity that is used for both
702        temperature and salinity (and passive tracers)ç
703    o add offline package
704    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
705      provided by Stephanie Dutkiewicz
706    o genmake2: add ability to search for C compilers and cleanup test output
707      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
708    
709    checkpoint54d_post
710    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
711    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
712      leading to additional shift by 5 days each year of integration
713       (i.e. leading to considerable offset over the years)
714    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
715    o start with no AB and no initial filtering (staggerTimeStep):
716      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
717    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
718      (external loading & cpl import/export stay in forward_step.F)
719    o update coupling interface to work with new staggerTimeStep
720    o change MDSIO ptracers_pickup.
721    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
722    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
723    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
724    
725    checkpoint54c_post
726    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
727      this affects (truncation error) output.txt of test-exp:
728       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
729    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
730    o change Qnet to always be the net heat flux, (+upward).
731      affects (truncation error) output of natl_box exp.: updated
732    o define the max number of passive tracers in PTRACERS_SIZE.h
733    o start to test mnc routinely in exp0
734    o add sea-ice loading (sIceLoad) as a new forcing field.
735    
736    checkpoint54b_post
737    o add testreport "-j JOBS" option for parallel builds (tested and pretty
738       impressive on Altix and Opteron systems)
739    o diagnostics can now write NetCDF files through the mnc package
740    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
741    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
742    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
743      affects (truncation error) output of lab_sea & natl_box exp.: updated
744    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
745    
746    checkpoint54a_post
747    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
748    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
749    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
750    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
751      + internal_wave (shift in writing cg2d_ini_res)
752    checkpoint54a_pre
753    
754    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
755      - modified verification/lab_sea and natl_box_adjoint accordingly
756    
757    checkpoint54
758    checkpoint53g_post
759    o prepare splitting of thermodynamics: store convect.counter in common block
760    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
761      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
762    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
763    o new parameter "nShapS": allow to treat differently S from T (nShapT)
764    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
765    o restore adjointability
766    
767    checkpoint53f_post
768    o modifications that affect AIM experiment results (update output.txt):
769      - no advection of S at top interface Nr (pkg/generic_advdiff)
770      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
771    o AIM pkg:
772      - include stability function into surf.Flux derivative relative to Tsurf
773      - calculate clear-sky radiation & surface temp. change (for diagnostics)
774    
775    checkpoint53e_post
776    o merged cylindrical coord configuration
777    o added rotating_tank experiment
778    checkpoint53e_pre
779    
780    checkpoint53d_post
781    o faulks upgraded: re-generate output.txt that have changed:
782       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
783    o Added Bryan and Lewis, 1979, vertical diffusivity profile
784    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
785    o added Sadourny discretization of Coriolis
786      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
787      - re-enabled use of omega3 (useAbsVorticity)
788    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
789      vector-invariant equations
790      - note: does *NOT* yet use same variable visc. for no-slip BC's.
791    o recoded the lateral boundary conditions for non-hydrostatic w, this time
792      hopefully without new bugs
793      - still to do: biharmonic friction for non-hydrostatic w
794    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
795    o regenerated output for global_ocean_ebm (using -ieee)
796    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
797      of mom_common/
798      - simple re-arrangement of instructions within computing loop
799    checkpoint53d_pre
800    
801    checkpoint53c_post
802    o new version of coupler for AIM+thSIce and Ocean models
803     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
804     - land: change Evaporation of snow
805     - aim with thSIce: fix bug in snow-precip.
806    o changes to calc_gw.F
807     - bug fix for w^2 term near the bottom boundary
808     - (hopefully) improve the lateral slip boundary condtions for use with
809        partial/looped cells
810      - because the bug fix changes two verification experiments anyway (exp5
811        and plume on slope), change the lateral boundary condition from half slip
812        to the value of no_slip_sides
813    o ebm package wasnt quite up to the parallel task. Fixed that.
814    o Adjoint of EBM package + verification
815      * TLM OK
816      * ADM not sufficient accuracy yet (needs further testing)
817    
818    checkpoint53b_post
819    o Commiting new energy balance model to repository
820      * package is pkg/ebm
821      * verif. is verification/global_ocean_ebm
822      * references are in ebm_driver.F
823    C      * X. Wang, P. Stone and J. Marotzke, 1999:
824    C        Global thermohaline circulation. Part I:
825    C        Sensitivity to atmospheric moisture transport.
826    C        J. Climate 12(1), 71-82
827    C      * X. Wang, P. Stone and J. Marotzke, 1999:
828    C        Global thermohaline circulation. Part II:
829    C        Sensitivity with interactive transport.
830    C        J. Climate 12(1), 83-91
831    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
832    C        Destabilization of the thermohaline circulation
833    C        by atmospheric eddy transports.
834    C        J. Climate 7(12), 1870-1882
835    o Will need long integration testing.
836    checkpoint53b_pre
837    
838    o created pkg/mom_common in preparation for variable viscosity code
839    o renamed and split ini_mnc_io
840    o pkg/land: only liquid water can diffuse or run-off
841    o AIM using land: soil wetness availability account for snow
842    o added printMapIncludesZeros to EEPARMS namelist
843    
844    checkpoint53a_post
845    o restore TAMC compatiility for exf_constants.h
846      (no usage of _d in .h)
847    o Additional storing in KPP in an attempt to fix
848      TAMC problem with adjoint of KPP code.
849      (no success...)
850      Identical code works fine with TAF.
851    o Fixed verification/natl_box_adjoint experiments.
852      Initial conditions for Experiments 4 and 5 are now
853      set to "SEAICE_initialHEFF=0", which is more reasonable,
854      and hence gives results closer to that of Experiment 2.
855      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
856    
857    checkpoint53
858    o stable checkpoint with up to date adjoint
859      TLM tests only run for 1st grdchk at the moment. Its unclear if
860      this is a code problem or a problem with resetting code for g_
861      variables that is being autogenerated wrong.
862      Otherwise:
863       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
864       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
865         are both still in chaos following their security messes.
866    
867    checkpoint52n_post
868    o various build (mostly genmake2) changes including:
869      - ability to build/run more easily within Cygwin and MacOS X
870      - more complicated Makefiles with a stronger dependence on Gnu Make
871    o pkg/seaice modifications
872      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
873        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
874        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
875      - changed proxy for geostrophic velocity and updated
876        verification/lab_sea/results/* accordingly
877      - removed ADI dynamic solver from pkg/seaice
878      - replaced all occurrences of 1/CSTICE or 1/CSUICE
879        they caused a segmentation fault under certain circumstances
880      - removed unused field WATR
881    o bug fix in exf-package:
882      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
883         now reflect that.
884    o small fixes in the cal-package:
885      - set reference date to first of January for the 'model'-calendar
886      - failing of cal_CheckDate in cal_FullDate now actually results in a
887        warning
888    o small modifications in exf-package to increase flexibility:
889      - change climtempfreeze from a constant to a runtime parameter that
890        is specified in data.exf_clim (default = -1.9)
891      - introduce runtime parameter windstressmax (default = 2.0) that is
892        specified in data.exf
893    o fix in pkg/thsice:
894      - update Evap (Tsf changes) to be consistent with Latent heat flux
895      - maintain snow precipitation unchanged (even if Tsf >=0).
896     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
897    
898    checkpoint52m_post
899    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
900      this does not change any of the results, because myIter=0 in swfrac always
901      lead to jwtype=2 (the default anyway), but the call makes little sense
902      as a default
903    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
904    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
905      atmospheric model (AIM) to use it ; add a "slab ocean" component.
906    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
907    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
908    o extending useSingleCpuIO option to work with new exch2 I/O format
909      - old-style, missing-tile I/O is still accessible by defining CPP
910        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
911    o monitor package can write to NetCDF files and/or STDOUT
912    o fix re-definition bug in MNC_GRID_INIT_ALL()
913    o doc/api_reference added
914      - a framework for building an API Reference Manual using all
915        the "protex" comments embedded in the code
916      - see pkg/generic_advdiff, pkg/mnc for examples
917    o MNC:
918      - make myThid the last argument for all subroutines
919      - new default for the grid files: NO halos
920      - add useMNC and other run-time flags
921      - separate per-file-group handling of the unlimited dimension
922      - early initialization of MNC w/ flags read at the eeboot stage
923        and lookup tables set in initialize_fixed
924      - write all MNC output to a freshly-created directory
925    o thermodynamics sea-ice (thsice) is now tested with testreport.
926    o test exp. advect_cs: use the standard cs32 grid ; update output.
927    o Added functionality to grdchk:
928      pick global i,j,k position (or nearest wet) where to perform check.
929    
930    checkpoint52l_post
931    o new land formulation:
932      a) use ground enthalpy as prognostic variable to ensure exact
933         energy conservation.
934      b) account for water temperature and for latent heat of freezing
935         in all processes (rain, run-off, ground storage)
936      c) compute surface and ground temperature implicitly.
937    o aim_v23 modification for new land model:
938      a) Treat separately land / ocean / sea-ice surface fluxes
939         to allow implicit computation of land & sea-ice surface temp.
940      b) add snow precipitation.
941    checkpoint52l_pre
942    
943    o fix problem (when 1 tile is empty) in min/max monitor.
944    o fix bug in timeAve (u,vZetatave in common block)
945    o no restoring terms under ice for pkg/seaice
946    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
947    o bug fix for pkg/seaice pickups
948    o change MNC call locations and add coordinate attributes
949    o mask vorticity at the corner ; affects global_ocean.cs output
950    o fix ini_curvilinear_grid ; test CS experiments with mpi
951    o aim.5l_cs: modify sea-ice fraction input file ; update output
952    o exf: Adding simple range check routine for exf fields after read
953    
954    checkpoint52k_post
955    o removed top-level directory "diags"
956      - we migrated these functions to pkg/timeave a long time ago
957    o fixed bug introduced in pkg/monitor
958    o accuracy ctrlprec = 32 insuffient for gradient checks using
959      averaged fields (I/O via cost_averages)
960      -> use ctrl.h in active_file*.F to control I/O precision.
961    o paramter list of CALL ADTHE_MAIN_LOOP
962    o added initial do_the_model_io to ecco
963    o set all ...Freq to zero after cost_final
964      taveFreq, dumpFreq, pChkptFreq
965    o MAIN and ECCO differentiability restored
966    
967    checkpoint52j_post
968    o fix nchklev in tamc.h for global_ocean...
969    o Bringing flow and store directives up-to-date
970    o Really weird thing!
971      call do_the_model_io from the_main_loop with parameters
972      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
973      TAF places a faulty re-call of initialise_varia
974      after cost_final call which should not be there!
975    checkpoint52j_pre
976    
977    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
978      error messages
979    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
980    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
981      debug output
982    o modfied mdsio_writefield.F to handle non-global files under exch2
983    o update AIM Cubed-Sphere exp (aim.5l_cs):
984      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
985    o update AIM Equatorial Channel exp:
986      use standard aim_v23 pkg and change the SST fields to be more realistic.
987    o globalFile now works with exch2
988    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
989      mon_vort3.F to make exch2 friendly with >1 tile per cube face
990    o limit timeave output for hi-res integrations
991    
992    checkpoint52i_post
993    o removed CPP_EEOPTIONS.h from verification/*/code
994    o updated the tiling for global_ocean_pressure
995    checkpoint52i_pre
996    
997    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
998      the old pkg/aim).
999    
1000    checkpoint52h_pre
1001    o shortened offending lines in exch2_send_rx?.template
1002    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
1003    o genmake2: add build & execute test for NetCDF code
1004    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
1005      old grid files, moved CPP_EEMACROS.h to pkg/exch2
1006    o added useSingleCPUIO flag to monitor.F and mon_out.F
1007    o added temporary hack for sea-ice dynamics on the cube:
1008      metric terms are ignored and it is assumed that
1009      there is no sea-ice on cube faces 1, 2, 4, and 5.
1010    
1011    checkpoint52f_post
1012    o added exch2 cube routines to pkg/exch2
1013    o modified hs94.cs-32x32x5 to use it
1014    o added new grid files to hs94.cs-32x32x5
1015    checkpoint52f_pre
1016    
1017    checkpoint52e_post
1018    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
1019      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
1020    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
1021      to work with implicit vertical advection and AB ;
1022    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
1023    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
1024     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
1025    checkpoint52e_pre
1026    
1027    o fix bug in impldiff when Nr=1 or Nr=2.
1028    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
1029    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
1030    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
1031      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
1032    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
1033    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
1034    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
1035    
1036    checkpoint52d_post
1037    o re-tiled many expts to allow comparison in multi-processor mode
1038      - updated output accordingly
1039      - changed hs94.128x64x5 to use intial T from file rather than use the
1040        random number generator
1041    o add infrastructure in model routines for fizhi and gridalt packages
1042    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
1043    o changes to permit hi-res, cubed-sphere, configuration
1044      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
1045      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
1046      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
1047        of surface winds for the cube
1048      (A verification experiment, based on global_ocean.cs32x15, but with
1049       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
1050       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
1051       complete with example surface forcing files and matlab scripts to look
1052       at the output and compare it with that of global_ocean.cs32x15.)
1053    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
1054       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
1055       to conform to the common rule.
1056    o check-in the first version of the coupler + interfaces for multi-components
1057       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
1058       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
1059       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
1060       - ocean and atmos. share the same horizontal grid (no interpolation).
1061       - exchanges between component and coupler is done in forward_step
1062    o new verification experiment, cpl_aim+ocn:
1063       coupled ocean - AIM atmosphere on cs32 grid.
1064    
1065    checkpoint52d_pre
1066    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
1067    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
1068    
1069    checkpoint52c_post
1070    o Fixing OPTIONS files for use of exf:
1071      - ALLOW_ECCO not needed
1072      - ECCO_CPPOPTIONS.h should not be included from
1073        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
1074        as has been the case in the past
1075      - All cal/exf related options are currently set in
1076        single header file. Should remain so until we
1077        agree on a consistent new policy.
1078    o Removed all CPP options for cal package.
1079      cal has no more CPP options.
1080    o modified STOREs in GAD_ADVECTION
1081    o corrected key comp. for passkey
1082    
1083    checkpoint52b_post
1084    o new version: "thsice" of thermodynamic sea-ice pkg:
1085     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
1086     - modify fluxes but do not change theta directly;
1087     - light cleaning of bulk_force pkg (still needed with thsice).
1088     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
1089       + output_thsice.txt to test thsice & bulk_force pkgs.
1090    o put back grid & coriolis monitor output.
1091    checkpoint52b_pre
1092    
1093    o call "do_the_model_io" at the beginning (=> dump initial state)
1094    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
1095    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
1096      (need info on NUMBER_OF_PTRACERS)
1097    o missing PTRACERS headers in some routines
1098    o default tamc.h in pkg/autodiff supposed to crash
1099      to ensure proper customization
1100    
1101    checkpoint52a_post
1102    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
1103      - moved surfaceTendencyTice from pkg/seaice to main code
1104      - subroutine FREEZE_SURFACE now limits only surface temperature
1105        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
1106        => new output.txt for global_ocean.cs32x15 & global_with_exf
1107      - keep the old version of FREEZE for backward compatibility;
1108        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
1109      - corresponding modifs for TAF directives
1110    o added surface flux output variables to TIMEAVE_STATVARS
1111    o time-averaged output for pkg/ptracers
1112    o fix problem with ECCO-related divided adjoint
1113      snapshot file was missing some ad-variables,
1114      but no warning issued by TAF
1115    
1116    checkpoint52a_pre
1117    o some bug fixes for #undef REAL4_IS_SLOW
1118    
1119    checkpoint52 = ecco_c52_e35
1120    o after testing adjoints of checkpoint51u_post
1121    
1122    checkpoint51u_post
1123    o this is the post-merge tag of the ecco-branch
1124      (needs another clean checkout and re-testing)
1125    o various natl_box_adjoint configs and results
1126      but no input fields
1127    o obcs adjoint not yet merged!
1128    o adding ECCO global 1x1 and 2x2 degree configs
1129    o updated/extended some store directives for seaice
1130    o pkg/ecco now containes ecco-specific part of cost function
1131    o top level routines the_main_loop, forward_step
1132      supersede those in model/src/
1133      previous input data.cost now in data.ecco
1134      (new namelist ecco_cost_nml)
1135    o in ctrl/ cleaned some cross-dependencies and updated CPP options
1136    
1137    checkpoint51t_post
1138    o this is the pre-merge tag of the ecco-branch
1139    
1140    checkpoint51s_post
1141    o cleanup: removed various obsolete #define-s
1142    o pkg/grdchk
1143      - renamed 'ph-grd 3' to 'grad-res'
1144      - merged from ecco-branch
1145        (remaining bug fixes for obcs gradient checks)
1146      - additional high-precision output for testreport
1147        (grep for 'precision_grdchk_result')
1148    
1149    checkpoint51r_post
1150    o cleaned up or removed CPP_OPTIONS.h files
1151    o updated results for some of the tests to reflect the new
1152      optfiles (-ieee: -O0 instead of -O3)
1153    
1154    checkpoint51q_post
1155    o cd_code:
1156      - moved cd_scheme.F -> cd_code_scheme.F
1157      - separate read_checkpoint from cd_code_ini_vars.F
1158      - separated cd_code part from write_checkpoint
1159      - updated AD_SOURCE, generated .flow
1160      - added CD_CODE_VARS.h to the_main_loop
1161      - Moving cd_code specific store dir.s to pkg/cd_code
1162    o ctrl package totally restructured
1163      - pack/unpack now optional and decoupled from
1164        xx_/adxx_ I/O
1165      - ctrl_pack/unpack cleaned
1166        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
1167      - confined inclusion of AD_CONFIG.h to where necessary.
1168    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
1169    
1170    checkpoint51p_post
1171    o create initial cd_code package
1172      - WARNING: the initialization of fields within packages
1173        is broken because INI_FIELDS (where READ_CHECKPOINT is
1174        called) is called *before* PACKAGES_INIT_VARIABLES.
1175        This seems to be backwards since
1176        1) its important to initially zero the entire field including
1177           the "halo" region
1178        2) zeroing needs to be done *before* reading pickup info
1179           and the pickup call might or might not happen in any
1180           particular run
1181      - this needs an overhaul for R2
1182    o cleanup verification/*/code/GMREDI_OPTIONS.h
1183    o cleanup testreport
1184    
1185    checkpoint51o_post
1186    o bringing AD-related verif's up to date with genmake2
1187      - carbon/
1188      - global_ocean.90x40x15/
1189      - hs.94.1x64x5/
1190      - (front_relax/ )
1191    o (more) consistent directory structure for AD-related verif.'s
1192    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
1193    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
1194    o bug fix in find_alpha.F for MDJWF:
1195      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
1196        change rho -> rho-rhoConst
1197      - replace call find_rho to find_rhonum
1198    o initialisation of rFlx extended to full array (required by TAF)
1199      and shifted to thermodynamics
1200    o removed PTRACERS.h in ptracers routine
1201    o added surfacetendencyPtr to S/R parameter list pracers_forcing
1202    o Correcting initialisations for fVerU, fVerV.
1203    o helping TAF to recognize dependency on kUp for
1204      fVerU, fVerV
1205    o Replacing delZ by delR in pkg/ctrl/
1206    checkpoint51o_pre
1207    
1208    o undid all of cp51 pending some cleanups and discussion
1209    o added the [#include "AD_CONFIG.h"] statement to all files that need
1210       it for adjoint/tl #defines
1211     o re-worked the build logic in genmake2 to support AD_CONFIG.h
1212     o removed tools/genmake since it no longer works
1213    
1214    checkpoint51n_post
1215    o modifications to make FREEZE flux visible to pkg/kpp
1216      - moved surfaceTendencyTice from pkg/seaice to main code
1217      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
1218      - subroutine FREEZE now limits only surface temperature
1219        (this means new output.txt for global_ocean.90x40x15,
1220         global_ocean.cs32x15, and global_with_exf)
1221    o added surface flux output variables to TIMEAVE_STATVARS
1222    
1223    checkpoint51n_pre
1224    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
1225    o added [#include "AD_CONFIG.h"] to all files that use the following
1226      defines:
1227      - ALLOW_ADJOINT_RUN
1228      - ALLOW_TANGENTLINEAR_RUN
1229      - ALLOW_ECCO_OPTIMIZATION
1230    
1231    checkpoint51m_post
1232    o incorporating changes to get TAMC/TAF working in genmake2
1233      - added new TAMC/TAF targets to the Makefile
1234      - various cleanups related to package handling
1235      - these changes should have no impact on the forward model
1236    
1237    checkpoint51l_post
1238    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
1239     - faster algorithm for cal_addtime.F
1240     - higher precision arithmetic, where needed
1241     - pkg/exf *startdate variables changed from calendar date to
1242       model integration time
1243    
1244    checkpoint51l_pre
1245    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
1246    o enable to apply restoring on S & T only in a latitude band.
1247    o update output (external_forcing_surf modif. change truncation errors)
1248       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
1249    
1250    checkpoint51k_post
1251    o change default to: useNHMTerms=.FALSE.
1252     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
1253       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
1254     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
1255        exp1, ideal_2D_oce
1256     - change data file of oceanic exp (leave the results unchanged for now)
1257       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
1258    o set gravitySign automatically according to the vertical coordinate used
1259      (and change sign: back to "logical" value: +1 when R increases downward)
1260    o added an include barrier to the default CPP_OPTIONS.h and
1261      removed the #include "PACKAGES_CONFIG.h" from it
1262    o fix a bug in mom_fluxform (from chk51j_post)
1263    
1264    checkpoint51j_post
1265    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
1266    o adjusted some flow directives (dynamics, thermodynamics)
1267    o added cubed-sphere case to test cost function
1268    o heckpoint_lev?_directives.h now include
1269      pkg-specific directives, whenever those are enabled.
1270    o Moving pkg-specific flow directives to corresponding pkg
1271      Moving pkg-specific differentiation list to corresponding pkg
1272      Moving pkg-specific checkpoint-lev storing to corresponding pkg
1273      ---> conventions are
1274           - pkg_ad.flow
1275           - pkg_ad_diff.list
1276           - pkg_ad_check_lev?_dir.h
1277    
1278    checkpoint51i_post
1279    o merge of the branch-genmake2
1280      - knowingly breaks the older genmake
1281      - automatic generation of all ALLOW_${PKG_NAME} defines
1282      - new testreport supersedes older testscript
1283    o large number of package inclusion and header cleanups
1284    checkpoint51i_pre
1285    
1286    o new output for adjoin of global ocean vector invariant
1287    o fix for checkpoint of thermodynamic seaice and bulk_force
1288    o Steph gchem various cleanups
1289    
1290    checkpoint 51h_pre
1291    o fixed some single quotes
1292    o modify gchem pkg to be more versatile
1293    o modifications to clean up dic pkg
1294    o add pkg/cfc
1295    
1296    checkpoint51g_post
1297    o provide links for ARPACK and ADM*TLM
1298    o start removing verification/vero/
1299    o update AD-related stuff
1300      (in particular some IF-statements in model/src/ routines)
1301    o adding to verification/global_ocean.90x40x15/ adjoint of
1302      vector invariant setup
1303    
1304    checkpoint51f_post
1305    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
1306    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
1307      of tracer Green's fucntions for ocean inversion project.
1308    
1309    checkpoint51f_pre
1310    o Added on-the-fly spatial interpolation capability
1311        "USE_EXF_INTERPOLATION" to pkg/exf.
1312      - This is a temporary Cartesian-grid hack until
1313        the super-duper ESMF coupler becomes available.
1314      - See verification/global_with_exf/README for usage example.
1315      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
1316        flags and modified pkg/seaice accordingly.
1317    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
1318        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
1319        non-local transport term.
1320    
1321    checkpoint51e_post
1322    o pkg/mom_vecinv:
1323      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
1324      - add time-ave diagnostic of vorticity advection.
1325    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
1326    o atmospheric geopotential: - include water vapor effect;
1327                                - use p^kappa in p* scaling.
1328    o land pkg: read initial state from files.
1329    o AIM : add stratospheric drag in the upper level
1330    
1331    checkpoint51d_post
1332    o change function ILNBLNK (=> last non-blank char.) to return zero
1333      (instead of the string length) when the string. char is empty
1334    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
1335    o modif's to restore TAMC compatibility
1336      - avoid "_d" constructs in PARAMETER declarations
1337      - avoid interrupting lines by comment lines
1338    o Use cluster local disks for purely local I/O
1339      vs. globally visible disks needed for ctrl stuff
1340      (merged from ecco-branch)
1341      - new active_file_loc... and mdsio_..._loc routines
1342      - affected packages: autodiff, ctrl, grdchk, mdsio
1343    
1344    checkpoint51c_post
1345    o introducing integer flag debugLevel
1346      - debLevZero: suppress all output
1347      - debLevA: standard
1348      - debLevB: equivalent to current debugMode=.TRUE.
1349    o introducing pathname variable mdsioLocalDir for mdsio
1350      that can be specified at runtime
1351      (relevant for cluster I/O to local disk)
1352    `
1353    >>>checkpoint51b_post
1354    adjoint of ptracers
1355    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
1356    o extended state in checkpoint_lev?, etc.
1357    o alternative ctrl/cost with tr1 or ptracer
1358    o new comlev1_bibj_ptracers
1359    o new ptracers.flow
1360    o made ptracers_forcing same as external_forcing_s
1361    o added verification for adjoint with ptracers
1362      - adm. grdchk fail so far
1363      - tlm. grdchk OK
1364      - checked tapelev/comlev recomputations: OK
1365    <<<checkpoint51b_pre
1366    
1367    checkpoint51a_post
1368    o added code for biogeochemistry package
1369      - new pkgs: dic, gchem
1370      - new subroutine in ptracers
1371    o modify code for biogeo packages
1372      - in model/src and pkg/ptracers
1373    
1374    checkpoint51
1375    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
1376      - autodiff, ctrl, exf, grdchk, seaice
1377      kept separate packages
1378      - cost, ecco, obcs
1379    o updating verification/internal_wave, verification/lab_sea
1380      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
1381    
1382    checkpoint50i_post
1383    o Preparing next differentiable checkpoint and sync
1384      of MAIN vs. ecco-branch
1385      - 1st step: this one is differentiable
1386      - 2nd step: next(! not this) checkpoint will have updated packages
1387                  from ecco-branch)
1388    
1389    checkpoint50h_post
1390    o new package "land": provide surface BC for AIM.
1391    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
1392    o AIM: use true log-P extrapolation for near surface temp (= as in
1393        F.Molteni paper) ; update aim.5l_cs output.
1394    o New variable in PARM03 for more flexible pickups
1395    o somewhat cleaned package initialisation sequence for
1396      ctrl/ cost/ ecco/ in packages_... routines
1397    
1398    checkpoint50g_post
1399    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
1400      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
1401      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
1402        made the default because of faster convergence than ADI
1403    
1404    checkpoint50f_post
1405    o exf totally restructured
1406      - replaced all exf_set_ routines by one generic exf_set_gen.F
1407        and made sure it's still differentiable
1408      - split exf_getffields.F into new exf_bulkformulae.F
1409      - exf_inscal_/exf_outscal_ suffixes consistent with field names
1410      - updated adjoint/makefile and relevant verif. accordingly
1411    
1412    checkpoint50f_pre
1413     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
1414          + change Evap over land. (update aim.5l_cs output)
1415     o added missing .cvsignores and made uniform across expts
1416     o changed configuration of tidal_basin_2d expt
1417     o added pkg/debug functions for tracing code in fatal crashes
1418     o tidied pkg/monitor to use MONITOR_OPTIONS.h
1419     o new fn in pkg/monitor to stop model if solution grows too big
1420     o removed lots of single quotes from comments
1421    
1422    checkpoint50e_post
1423    o make KPP work with PTRACERS
1424     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
1425       nearly a copy of kpp_transport_s
1426     - there is no analogue to SurfaceTendencyS, so I have to use
1427       gPtr(of the surface layer) instead
1428    o add a new platform SunFire+mpi (SunFire 15000) to genmake
1429    checkpoint50e_pre
1430    
1431    checkpoint50d_post
1432    o change kpp output from multiple-record state files to single-record state
1433      files analogous to write_state.F
1434    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
1435      analogous to the cg2d-related output.
1436    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
1437      so that writing to internal file fn (with length 512) fails.
1438    checkpoint50d_pre
1439    
1440    checkpoint50c_post
1441    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
1442    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
1443    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
1444    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
1445    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
1446    
1447    checkpoint50c_pre
1448    Merging from release1_p13:
1449    o bug fix for pkg/seaice dynamic solver
1450    o Added SEAICE_initialHEFF to pkg/seaice
1451    
1452    checkpoint50b_post
1453    o store u*,v* in gU,V instead of in guNm1,gvNm1
1454    o in order to put the momForcing out of the Adams-Bashforth:
1455      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
1456      to timestep.F
1457    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
1458    o re-generate output for highly sensitive test-exp:
1459       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
1460    
1461    checkpoint50b_pre
1462    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
1463    o corrected CPP option mismatch in exf_Bulk... functions for case
1464      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
1465    
1466    checkpoint50a_post
1467    o Bug fix for merging between c50 and KPP.
1468      ikey was passed from thermodynamics to kpp_calc via
1469      common block rather than being recomputed in kpp_calc,
1470      in contradiction with new key itdkey.
1471      New key ikppkey created, and tamc.h headers updated.
1472    
1473    checkpoint50
1474    - 2nd step of merge with ecco-branch:
1475      merge changes in ecco-branch back into main trunk
1476    - bug fix in find_alpha
1477    - more storing in gmredi_calc_tensor.F, kpp_routines.F
1478    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
1479    - merged some sliced AD support routines
1480    
1481    checkpoint49
1482    merged from ecco-branch:
1483    o exf:
1484      - Enable initialisation of forcing fields to constant
1485        (runtime) values.
1486      - in exf_getffields.F
1487        Reduce i-/j-loop to interior domain, discarding overlaps.
1488        That also fixes wrong TAF-key computations for key_1, key_2
1489        with bulf formulae.
1490      - exf_init.F modify #ifdef for exf_init_evap
1491      - exf_getffieldrec.F, ctrl_getrec.F
1492        The following INT-usages are not safe:
1493          fldsecs  = int(fldsecs/fldperiod)*fldperiod
1494          fldcount = int(fldsecs/fldperiod) + 1
1495        and were modified.
1496    o autodiff: checkpoint_lev...
1497      - updated storing for bulk formulae (some arrays were missing)
1498      - added state for seaice package
1499      - synchronized with main branch
1500    o DIVA:
1501      Modif.s in
1502      - the_main_loop.F
1503      - the_model_main.F
1504      and added cost_final_restore.F cost_final_store.F
1505      o With these changes, it is possible to fully separate
1506        the first forward run to compute the cost function (mdthe_main_loop)
1507        and adjoint runs over individual DIVA intervals (adthe_main_loop)
1508        into separate model executions.
1509        This enables better tuning of DIVA to given queue sizes.
1510      o Loss of cost function value in consecutive DIVA runs is
1511        fixed by storing to 'costfinal' file.
1512      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
1513        beginning/end of adjoint integration is accounted for.
1514      The current changes apply to TAF-1.4.26.
1515      TAF has one remaining bug, requiring one manual change
1516      (see MITgcm manual).
1517    o cal: synchronized between MAIN and ecco-branch
1518    
1519    checkpoint48i_post
1520    o Changes to restore differentiability of code w.r.t. previous tag
1521      (mostly adding new routines to make list and replacing
1522      pressure by totPhiHyd).
1523    o Updated and merged grdchk package
1524      - has both ADM and TLM checks
1525      - works for single- and multi-proc.
1526      - output cleaned
1527      - worked successfully for parallel DIVA
1528    o genmake:
1529      - Adding -platform=SP4
1530      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
1531    o Modif. for DIVA:
1532      ctrl_unpack should not be called in intermediate DIVA interval.
1533      (similar thing would apply for active files such as
1534      tbar, sbar, psbar, which should not be reinitialised;
1535      only relevant for ecco-branch)
1536    
1537    checkpoint48h_post
1538    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
1539    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
1540    o Added SEAICE_initialHEFF to pkg/seaice
1541    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
1542    
1543    checkpoint48g_post
1544    --- EOS:
1545    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
1546      store total Potential in totPhyHyd for diagnostics & EOS.
1547    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
1548    --- Pressure/geopotential gradient:
1549    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
1550    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
1551      ( changes results of global_ocean_pressure )
1552    o NLFS + z-coord.: add eta*Rho' contribution.
1553    o accurate phiHyd when using interface-W at the middle between 2 centers
1554     ( changes results of ideal_2D_oce )
1555    o includes r* 2nd term in potential gradient.
1556    
1557    checkpoint48f_post
1558    Merging from release1_p12:
1559    o Modifications for using pkg/exf with pkg/seaice
1560      - improved description of the various forcing configurations
1561      - added basic radiation bulk formulae to pkg/exf
1562      - units/sign fix for evap computation in exf_getffields.F
1563      - updated verification/global_with_exf/results/output.txt
1564    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
1565      (SBO) core products, including oceanic mass, center-of-mass,
1566      angular, and bottom pressure (see pkg/sbo/README.sbo).
1567    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
1568      to avoid negative values in shallow regions.
1569      - updated verification/natl_box/results/output.txt
1570      - updated verification/lab_sea/results/output.txt
1571    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
1572    o Added useSingleCpuIO option (see PARAMS.h).
1573    o Updated useSingleCpuIO option in mdsio_writefield.F to
1574      work with multi-field files, e.g., for single-file pickup.
1575    o pkg/seaice:
1576      - bug fix in growth.F: QNET for no shortwave case
1577      - added HeffFile for specifying initial sea-ice thickness
1578      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
1579    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
1580      kpp_transport_t.F, forward_step.F, and the_main_loop.F
1581    o pkg/seaice:
1582      - adjoint-friendly modifications
1583      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
1584    
1585    checkpoint48e_post
1586    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
1587    o dynamics: change definition of computational domain & adapt mom_fluxform
1588      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
1589    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
1590        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
1591        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
1592        global_ocean.90x40x15 global_with_exf global_ocean_pressure
1593        inverted_barometer solid-body.cs-32x32x1
1594      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
1595    
1596    checkpoint48d_post
1597    o in preparation for r*:
1598     a) use pre-computed gradient of hydrostatic potential:
1599        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
1600     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
1601        => affects results of glob_oce_pressure (different truncation error)  
1602      update output.txt of ideal_2D_oce & global_ocean_pressure
1603    
1604    checkpoint48d_pre
1605    o in preparation for r*:
1606      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
1607      pass the 2 comp. of the grad. as arguments to momentum S/R.
1608      but for the moment, only used if it does not change the results.
1609    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
1610    
1611    checkpoint48c_post
1612    Modifications in treatment of initial flux forcing controls
1613    to avoid extra storing of flux fields.
1614    
1615    checkpoint48c_pre
1616    o Added tidal_basin_2d experiment (currently 1D!)
1617    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
1618    
1619    checkpoint48b_post
1620    o r* coordinate added in #ifdef NONLIN_FRSURF block.
1621     (modification to pressure gradient not yet implemented)
1622    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
1623      (for U & V) that are used for vertical advection of momentum.
1624    
1625    checkpoint48a_post
1626    o In preparation for r*, use temp. array to compute vertical transport
1627       in flux-form momentum pkg. => change results of few test-exp.
1628      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
1629                        lab_sea, natl_box & plume_on_slope
1630    
1631    checkpoint48
1632    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
1633    
1634    checkpoint47j_post
1635    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
1636    o moved adexch from forward_step to addummy_in_stepping
1637    o added exch in ctrl_map_...
1638    o aveFreq.=0. at end of cost_final to avoid overwrite in
1639      reverse checkpointing loop
1640    o Yet more changes in gmredi:
1641      * adgmredi_calc_tensor
1642        avoiding all recomputation of gmredi_slope_limit
1643      * adgmredi_x/y/rtransport
1644        added flag for excessive storing to avoid recomp. of
1645        u/v/rtans, dTdx/y/z
1646        -> this is not really necessary and very memory-consuming
1647      * adgmredi_slope_psi:
1648        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
1649      * gmredi_slope_limit
1650        re-activated full calculation of taperfct for case 'ac02'
1651    o updating verification/ adjoints of carbon, global_ocean.90x40x15
1652    
1653    checkpoint47i_post
1654    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
1655    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
1656      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
1657    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
1658    o gmredi: fix few bugs.
1659    
1660    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
1661    This will be a good checkpoint to plug into the ecco-branch.
1662    o few modif.'s to get latest version adjointed
1663      (mainly kick out code in ini_linear_phisurf)
1664    o modif's to run adjoint with exactConserv
1665    o case GM_BOLUS_ADVEC should be cleaned
1666      S/R gmredi_slope_psi should be cleaned
1667    o verification/carbon now has exactConserv=.TRUE.
1668    
1669    checkpoint47g_post
1670    o time-average AIM output: becomes independent from statvars time-average
1671      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
1672    o After TAF bug fix:
1673      Tested adjoint of gmredi package.
1674      Tests were done with checkpoint47 rather than with latest
1675      checkpoint47f_post since the latter is broken for the adjoint
1676      verification/carbon/ contains both ADM and TLM gradient checks.
1677    Here they are, before they get changed/lost/stolen.
1678    Mostly modif.'s to fix numerical sensitivities.
1679    Gradient checks OK for
1680    - GM_taper_scheme:
1681      * clipping
1682      * ac02
1683      * linear
1684      * glw91
1685      * dm95
1686      * ldd97
1687    - GMREDI_OPTIONS:
1688      * GM_VISBECK_VARIABLE_K
1689      * GM_NON_UNITY_DIAGONAL
1690      * GM_EXTRA_DIAGONAL
1691      * GM_BOLUS_ADVEC
1692    in conjunction with data.gmredi parameters to be checked in
1693    in a few minutes under verification/carbon/code/
1694    
1695    checkpoint47f_post
1696    Merging from release1_p10:
1697    o modifications for using pkg/exf with pkg/seaice
1698      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
1699        and SEAICE_EXTERNAL_FLUXES
1700      - pkg/exf CPP options EXF_READ_EVAP and
1701        EXF_NO_BULK_COMPUTATIONS
1702      - usage examples are Experiments 8 and 9 in
1703        verification/lab_sea/README
1704      - verification/lab_sea default experiment now uses
1705        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
1706    
1707    checkpoint47e_post
1708    o created a tag prior to creating a branch
1709    
1710    checkpoint47d_post
1711    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
1712      at the bottom boundary had an erroneous half slip boundary condition
1713    o added bottom drag and no slip boundary condition capabilities to
1714      oceanic pressure coordinates code
1715    o added new verification experiment global_ocean_pressure, this experiment is
1716      also described in the tutorial section of the manual
1717    checkpoint47d_pre
1718    
1719    checkpoint47c_post
1720    o Added a verification experiment for a global cubed-sphere ocean run
1721      -  verification/global_ocean.cubed32x32x30
1722      -  uses pkg/therm_seaice and pkg/bulk_forcing
1723    
1724    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
1725    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
1726      when using P-coordinate; only implemented for atmospheric config.
1727    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
1728      NOTES: requires option NONLIN_FRSURF to be "#define".
1729    o update advect_xz/results/output.txt (left from checkpoint44g_post)
1730    
1731    checkpoint47b_post
1732    Merging from release1_p9:
1733    o pkg/seaice
1734      - removed GOTO's and added taf directives
1735      - double precision constants to reduce the g77 (Linux)
1736        to F77 (SGI) differences reported in release1_p8
1737    o tools/genmake
1738      - added SGI options
1739    o verification/testscript
1740      - updated to that of checkpoint47a_post
1741    o verification/global_ocean.90x40x15/input/eedata
1742      - modified for SGI f77 compatibility
1743    o verification/lab_sea
1744      - added description of sea-ice model
1745      - added missing matlab routines
1746      - added test of thermodynamics parallelization
1747    
1748    checkpoint47a_post
1749    o new pkg: aim_v23
1750     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
1751       for now, keep the same surface forcing as before.
1752     - Part-Cell implemented into AIM; check that Heat & Water are conserved
1753     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
1754     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
1755    o add diagnostic of surface correction term in monitor output
1756    
1757    o bulk_force and therm_seaice
1758    - Two packages:  bulk_force (Bulk forcing)
1759      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
1760    - Earlier integration from Stephaine Dutkiewicz
1761      and Patrick Heimbach.
1762    - Two ifdef statements for compile time,
1763       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
1764    
1765    checkpoint47
1766    differentiable version of checkpoint46n_post
1767    o bug fix in quasihydrostaticterms
1768    o * "clean" adjoint code (in terms of extensive recomputations)
1769        can now be obtained for all GMREDI options (i.e. for
1770        - GM_VISBECK_VARIABLE_K
1771        - GM_NON_UNITY_DIAGONAL
1772        - GM_EXTRA_DIAGONAL
1773        - GM_BOLUS_ADVEC )
1774      * However, wrong gradient check problem remains unsolved.
1775      * New CPP options have been introduced for different
1776        tapering schemes
1777    o external_fields_load now part of differentiation list
1778    o pressure needs multiple storing;
1779      would be nice to have store_pressure at beginning or
1780      end of forward_step, e.g. by having phiHyd global (5-dim.)
1781      (NB: pressure is needed for certain cases in find_rho,
1782      which is also invoked through convective_adjustment).
1783    o recomputations in find_rho for cases
1784     'JMD95'/'UNESCO' or 'MDJWF' are OK.
1785    o #define ATMOSPHERIC_LOADING should be differentiable
1786    o ini_forcing shifted to begining of initialise_varia
1787    o Incorporating QNVS line search routines into MITgcm
1788      (this is separate code, and therefore not under pkg)
1789      lsopt/, optim/
1790    o Updated verification/carbon/
1791      - #define GM_VISBECK_VARIABLE_K
1792      - GM_taper_scheme    = 'ldd97'    
1793    
1794    checkpoint46n_post
1795    Merging from release1_p8:
1796    o verification/natl_box:
1797      updating new external_fields_load routine
1798    o New package: pkg/seaice
1799      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
1800      The sea-ice code is based on Hibler (1979-1980).
1801      Two sea-ice dynamic solvers, ADI and LSR, are included.
1802      In addition to computing prognostic sea-ice variables and diagnosing
1803      the forcing/external data fields that drive the ocean model,
1804      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
1805      The implied surface heat flux is then stored in variable
1806      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
1807      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
1808      non-local transport term.  Because this call precedes model
1809      thermodynamics, temperature under sea-ice may not be "exactly" at
1810      the freezing point by the time theta is dumped or time-averaged.
1811      N.B.: fairly large differences in accuracy occur across
1812            different platforms/compilers; comparison between
1813            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
1814            generated output gives:
1815       T           S           U           V
1816      C D M    c        m  s        m  s        m  s        m  s
1817      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
1818      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
1819      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
1820    
1821      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
1822    o GAD:
1823      - generated new common blocks to account for call of
1824        same gad routines with differing traceridentities
1825        (needed to modify tracerIdentity indices in GAD.h)
1826      - generated separate common blocks for case useCubedSphereExchange
1827        (Department of Futurology)
1828      - parameter lists to gmredi_?transport: added tracerIdentity
1829      - added new key indices to tamc.h
1830    o external_fields_load:
1831      - added this routine to TAF list
1832      - needed to make some common blocks global and additional storing
1833        along the same lines as exf package (checkpoint_lev?_directives.h)
1834    o exf:
1835      updated external forcing package
1836      - bug fixes carried over from ecco-branch
1837        (missing OBCS_OPTIONS.h in two routines)
1838      - enable easy to use "no forcing".
1839      - added exf I/O for atmospheric loading
1840      - added exf I/O for runoff data
1841      - transfered scaling between exf <-> MITgcm to exf namelist
1842    o Adding new verification experiment global_with_exf.
1843      This verification experiment is almost identical to the
1844      global_ocean.90x40x15 experiment, except that it uses
1845      the exf (and cal) package instead of the
1846      external_fields_load routine (cf README file).
1847    
1848    checkpoint46m_post
1849    o modified testscript to return -- when there are no lines of "%MON" output
1850    o added new flag "quasiHydrostatic" for QH mode
1851      and new routine quasihydrostaticterms()
1852    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
1853      New routine: mom_u_coriolis_nh()
1854    o fixed sign of non-hydrostatic metric terms in u and v equations.
1855      Depend on correct sign of gravitySign.
1856    o added work.pc* to .cvsignore in aim directories using ifc
1857    o introduced flag for controllin non-hydrostatic metric terms
1858    o removed gravitySign from PARM04
1859    o switched to g77/ifc from pgf77 in aim experiments
1860    
1861    checkpoint46l_post
1862    o made convective adjustment work with pressure coordinates:
1863     - changed the direction of k-loop in convective_adjustment.F for the
1864       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
1865     - adjusted the reference pressure k-index in convective_adjustment.F
1866     - adjusted the convection condition in convect.F (in analogy to
1867       calc_ivdc.F)
1868     - convective_adjustment no longer computes anything on the halos
1869     - removed the warnings about negative salinity from find_rho.F and
1870       find_alpha.F; instead the new routine look_for_neg_salinity, called
1871       at the beginning of find_rho, find_alpha, and find_beta, does a
1872       check of the entire slice, if CPP-option
1873       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
1874    checkpoint46l_pre
1875    
1876    checkpoint46k_post
1877    o fixed the verification/global_ocean.90x40x15 experiment:
1878     - new bathymetry (the world according to A., JMC, and M.)
1879     - new initial fields and forcing fields (*.bin files)
1880     - new POLY3.COEFFS (for the next release one should switch to a full
1881       equation of state: JMD95P or MDJWF)
1882     - fixed several errors and redundancies in the data file
1883     - experiment uses looped cells
1884     - added matlab directory with diagnostic scripts for plotting of output
1885    
1886    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
1887     - read AIM physics parameters from a file (data.aimphys)
1888     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
1889    
1890    checkpoint46j_post
1891    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
1892    o move wVel computation at the end of the time step, in S/R integr_continuity
1893    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
1894    o update timeave pkg for wVel diagnostic.
1895    checkpoint46j_pre
1896    
1897    checkpoint46i_post
1898    o Clean up AIM package (and keep the results unchanged):
1899      include CPP_OPTION and use IMPLICT NONE in all routines ;
1900      declare all the variables _RL ; use _d 0 for all numerical constants.
1901      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
1902    
1903    checkpoint46h_post
1904    o cleaned up the use of rhoNil and rhoConst.
1905      - rhoNil should only appear in the LINEAR equation of state, everywhere
1906        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
1907        and the dynamical equations are all divided by rhoConst
1908    o introduced new parameter rhoConstFresh, a reference density of fresh
1909      water, to remove the fresh water flux's dependence on rhoNil. The default
1910      value is 999.8 kg/m^3
1911    o cleanup up external_forcing.F and external_forcing_surf.F
1912      - can now be used by both OCEANIC and OCEANICP
1913    checkpoint46h_pre
1914    
1915     Added code to convert surface volume flux (fresh water) into
1916     a mass flux when using P coordinates in the ocean (OCEANICP).
1917     Note: It assumes you have set rho0=rhoConst=density of fresh water.
1918    
1919    checkpoint46g_post
1920    o Include a new diagnostic variable phiHydLow for the ocean model
1921      - in z-coordinates, it is the bottom pressure anomaly
1922      - in p-coordinates, it is the sea surface elevation
1923      - in both cases, these variable have global drift, reflecting the mass
1924        drift in z-coordinates and the volume drift in p-coordinates
1925      - included time averaging for phiHydLow, be aware of the drift!
1926    o depth-dependent computation of Bo_surf for pressure coordinates
1927      in the ocean (buoyancyRelation='OCEANICP')
1928      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
1929        Theta, Salinity, and Pressure in the parameter list. This routine is
1930        presently contained in find_rho.F. This routine does not give the
1931        correct density for 'POLY3', which would be a z-dependent reference
1932        density.
1933    o cleaned up find_rho
1934      - removed obsolete 'eqn' from the parameter list.
1935    o added two new verification experiments: gop and goz
1936      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
1937    checkpoint46g_pre
1938    
1939    checkpoint46f_post
1940    o Enable tangent linear (forward mode) gradient checks:
1941      - extended active file handling to g_... files
1942      - added TANGENT_SIMULATION to theSimulationMode
1943      - extended grdchk package accordingly
1944    o added tangent linear setup in verification/carbon/code_ftl
1945    o added adjoint setup in verification/front_relax/code_ad
1946    
1947    checkpoint46e_post
1948    o Added new equation of state -> MDJWF
1949      - EOS of McDougall et al., 2002, JAOT, submitted
1950      - caveat: the equation of state is only valid for a smaller (more
1951        realistic?) range of values than JMD95P/Z and UNESCO
1952      - added masks to the calculation of pressure in store_pressure
1953      - added more check values for density in check_eos (ini_eos.F), some of
1954        the old check values are out of the range of the MDJWF-eos, so don't
1955        expect perfect matches for those
1956    checkpoint46e_pre
1957    
1958    checkpoint46d_post
1959    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
1960      'OCEANICP', also initialised field pressure correctly in ini_eos in the
1961      case of pressure coordinates. eosType='JMD95Z' in
1962      combination with buoyancyRelation='OCEANICP' now causes an error.
1963    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
1964      in find_alpha/beta.
1965    checkpoint46d_pre
1966    
1967    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
1968      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
1969    
1970    checkpoint46c_post
1971    o Changes necessary for ocean in p-coordinates
1972     -  Added new buoyancy relation = 'OCEANICP'
1973     -  Added new parameters = gravitySign (this used to be contained inside
1974        the factor dRdZ which I added when we first switched to R coordinates).
1975     X GM/Redi is not compatible (yet)
1976     X bottom drag and no-slip need to be debugged.
1977    checkpoint46c_pre
1978    
1979    checkpoint46b_post
1980    o Added new equation of state -> JMD95Z and JMD95P
1981      - EOS of Jackett and McDougall, 1995, JAOT
1982      - moved all EOS parameters into EOS.h
1983      - new routines ini_eos.F, store_pressure.F
1984    o Added UNESCO EOS, but not recommended because it requires
1985      in-situ temperature (see JMD95)
1986    o Modified formatting for knudsen2.f in utils/knudsen2 and added
1987      unesco.f to be used with POLY3
1988    checkpoint46b_pre
1989    
1990    checkpoint46a_post
1991    o Added (atmospheric) pressure loading
1992      - new field in FFIELDS.h, etc...
1993      - new cpp flag ATMOSPHERIC_LOADING
1994    o Changed hFacC to _hFacC in calc_phi_hyd.F
1995    o Added SHORTWAVE_HEATING to some files for consistency
1996    checkpoint46a_pre
1997    
1998    checkpoint46
1999    further merges from release1_p5
2000    o new ctrl package
2001      - adopted from ECCO environment to enable optimization
2002      - added Eliassen Palm fluxes to controls
2003    o added Eliassen Palm flux controls to gradient check package
2004    o cost package
2005      - Compatible with new ctrl package
2006      - added Eliassen Palm cost hooks
2007      - modif's of existing cost functions
2008    o Adjoint-related bug fixes in kpp:
2009      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
2010      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
2011    o autodiff package
2012      - flow directives:
2013        + new for S/R do_the_model_io
2014        + enhanced for S/R checkpoint
2015        + new gmredi.flow
2016      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
2017        disable adcommon.h/g_common.h by default.
2018      - fixed problem for adjoint of global_max
2019    o modified verification/carbon/
2020    o New setup for adjoint of global_ocean
2021    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
2022    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
2023    o incorporated hooks for sponge layer code (external_forcing.F)
2024    
2025    checkpoint45d_post
2026    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
2027    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
2028      (affects plume_on_slope "cg2d" output)
2029    o add new parameter deltaTfreesurf for free-surface time stepping
2030    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
2031    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
2032    o change phiMin in exp1 (to agree with documentation)
2033    o add new flags:
2034     - T,S forcing inside/outside Adams-Bashforth
2035     - turn off temp,salt advection and/or forcing
2036     - for each tracer, define internal flag for multiDimAdvection & A-B
2037    o monitor: change definition of KE to check conservation of Energy
2038    
2039    checkpoint45c_post
2040    o Removed f90 comments ("!")
2041    o Modified initialisations to enable exf package for MITgcm
2042      (without invoking ECCO_PACKAGE).
2043    o modifications to gradient check package (Martin Losch)
2044      - enable centered differences
2045      - modified format of standard output
2046    
2047    checkpoint45b_post
2048    o cleaned exchange calls in cg2d
2049    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
2050    o included CPP option SINGLE_LAYER_MODE in thermodynamics
2051      to configure barotropic setup (Martin Losch)
2052    o moved some initialisations within bi,bj loop in dynamics
2053      (TAF flow dependency)
2054    o in initialise_varia, moved call packages_init_variables
2055      before convective_adjustment_init
2056      (corresponding adjustment of TAF tape initialisation).
2057    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
2058    
2059    checkpoint45a_post
2060    o compute Rho over the whole domain (extend iMin,jMin indices)
2061    o specific exchange for X-slice domain (case Ny=1)
2062    o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
2063    o solve_for_pressure : set cg2d_x to zero where OBCS are applied
2064    
2065    checkpoint44h_post = checkpoint45
2066    o Fix to restore differentiability:
2067      place at which packages_init_variables is called in
2068      initialise_varia is crucial for reverse control flow.
2069    o modifications in GMRedi to enable stable adjoint
2070      (corresponding modif's in thermodynamics, dynamics)
2071    o added missing hook for sponge layer code in external_forcing
2072    o modified test cost functions
2073    o storing in gad_advection (plus removal of write(0,*)!
2074    o missing headers TR1.h added in convective_adjustment routines
2075    o errorMessageUnit set non-equal zero in eeboot
2076      (conflict on some platforms, e.g. IBM SP3)
2077    o modified carbon verif.
2078    
2079    checkpoint44h_pre
2080    o vertical grid option: allow to put the Interface at the middle between
2081      2 cell-centers ; replace delZ in pkg/kpp by drF.
2082    o GM Advective form: Tracers are advected using the residual transport (=
2083      Euler+GM-bolus); set param GM_AdvSeparate=T to return to previous form.
2084    
2085    checkpoint44g_post
2086    o fix surface correction term in multiDimAdvection (affects plume_on_slope
2087      results) ; ifdef missing in thermodynamics.F
2088    
2089    checkpoint44f_pre,checkpoint44f_post
2090    o added PTRACERS package
2091      This allows an arbitrary number of passive tracers to be integrated
2092      forward simultaneously with the dynamicaly model.
2093      + Implemented so far:
2094        - basic forward algorithm (time-stepping, advection, diffusion, convection)
2095        - I/O and checkpointing
2096        - GM/Redi  *but*  using the GM/Redi coefficient of Salt
2097      + Not implemented so far:
2098        - KPP
2099        - OBCS
2100      + No specific example supplied (yet) but global_ocean.90x40x15 has the
2101        necessary data.ptracer file. Simply use -enable=ptracers and uncomment
2102        line in data.pkg.
2103      + This package is disabled by default since it increases storage.
2104    
2105    
2106    o testscript: added -cleanup option
2107    o Shap_filt: a) new shap_filt S/R to use no-slip BC with S2 filter
2108                 b) enable to filter 2D fields.
2109    
2110    checkpoint44e_pre,post
2111    o re-wrote convective adjustment to use pre-calculated weights
2112      Affects: model/src/convective_adjustment.F, convective_adjustment_ini.F
2113      Adds:    model/src/convective_weights.F, convectively_mixtracer.F
2114      Original calls to convect() still in place.
2115    
2116    chkpt44d_pre,post
2117    o added missing EXCLUDE_MONITOR flags
2118    o changed "e" to "_d" in gmredi_slope_limit, gmredi_slope_psi
2119      (incompatible typ in MIN/MAX expressions caused problems
2120      on IBM SP3)
2121    o in genmake added variable MAKEDEPEND
2122      plus resetting for case SunOS
2123    o added timer_stats.c routine for IBM SP3
2124    o removed variables in dynamics
2125    !!! I forgot to create tag chkpt44d_pre !!!
2126    !!! But chkpt44d_pre = chkpt44c_post    !!!
2127    
2128  o real fresh water flux implemented with non-linear free-surface.  o real fresh water flux implemented with non-linear free-surface.
2129    
2130  chkpt44c_pre,post  chkpt44c_pre,post

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