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revision 1.145 by heimbach, Fri Mar 21 23:20:36 2003 UTC revision 1.572 by jmc, Thu Oct 13 16:35:52 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    checkpoint57v_post
8    o change dome exp. to use variable viscosity in side-drag terms.
9    o remove all the files from the cfc_offline test since they are now
10      incorporated into tutorial_cfc_offline which has been producing
11      identical results for a few days of testing
12    o add new parameter: sideDragFactor to enable half-slip-side BC
13      and change side-drag S/R to use viscosity from mom_calc_visc
14      (can switch back by setting sideDragFactor=0.); affects results at
15      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
16       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
17    o vorticity & strain are now computed without masking, to account for
18      no-slip-side BC in variable viscosity calculation ; mask is applied
19      anyway later on, before computing advection/coriolis terms.
20    o modify exp4 to test new obcs support reading from external files
21      and for passive tracers
22    o fix behavior of ptracers_monitor when monitor output is written to a
23      netcdf-file; still not independent of monitor.F (writes in the same
24      file).
25    o change default value of tRef (put a uniform, meaningful value for ocean
26      & atmos) and initialize sRef (was missing, as Martin mentioned).
27    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
28      to be proportional to enstrophy dissipation length.  Thus,
29       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
30      This is now consistent with Smagorinsky and with the manual.
31    
32    checkpoint57u_post
33    o OBCS and PTRACERS: add open boundary support for passive tracers
34      - either use homogenous (pseudo) v.Neumann conditions or prescribe
35        OB-values from file; this is not different from the way theta and salinity
36        are treated
37      - however, Orlanski-radiation conditions are not supported, and the model
38        will stop if you use pTracers and Orlanski at the same time.
39      - beefed up the rountine obcs_external_fields_load: now only those open
40        boundary values are overwritten with values from files for which there
41        are really files, otherwise the OB-fields remain untouched. This makes
42        it possible to use different OBs at different ends of the domain (as
43        with EXF)
44    o reduce number of exch calls in shap_filt (s2).
45    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
46      truncation level) 4/5 MLAdjust test results (11&12 digits match).
47    
48    checkpoint57t_post
49    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
50    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
51      same truncation, independent of the face number: affects affects several
52      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
53    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
54      note that biharmonic viscosity + no-slip was not tested in any experiment.
55    o fix bug in non-linear free-surf side-drag ; generate new output for
56      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
57    o make mnc honor the writeBinaryPrec flag for most kinds of output
58    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
59    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
60      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
61    o add brackets in multi-terms sum to get same truncation, independent of
62      the face number (manage to get exactly same value of gU,gV at the cs-edge)
63      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
64    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
65      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
66      a maximum grid-scale Reynolds number.  Also, changes all length calculations
67      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
68      Suggested values of viscosity parameters found in mom_calc_visc.
69      Many new viscosity diagnostics available.
70    
71    checkpoint57s_post
72    o Add clearing-house for viscosity calculations, mom_calc_visc and
73      correct numerous bugs in LeithD and Smagorinsky discretizations.  
74      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
75      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
76      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
77      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
78      The Strain-Tension form is now called with useStrainTensonVisc=.true.
79      ViscAhStrain and viscAhTension are now retired.
80    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
81    o In response to JMC's bug report, genmake2 now ignores any soft-links
82      that it finds in the *current* directory when searching for files.
83      Soft-links found in any other source directories will still work as
84      they did before.
85    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
86      a C routine to unlimit the stack size
87    o mnc-ify pkg/aim snapshot vars
88    o mnc-ify pkg/land as requested by Daniel
89    o various changes to mnc including:
90      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
91      - output can now be grouped so that all files within a group
92          change the ITER portion of their names in lock-step together
93      - can now read ("global") PER-FACE (in addition to PER-TILE) files
94          and works with both EXCH1 and EXCH2 (but needs more testing)
95      - writing works for all verification test cases w/ g77 on Linux
96    
97    checkpoint57r_post
98    o make MNC variable initialization happen earlier
99    o add diagnostics for (almost) each term of the momentum Eq.
100    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
101    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
102    o remove MINIMAL_TAVE_OUTPUT option ;
103      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
104    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
105      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
106    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
107    o add time-dependent SST, SSS control
108    o cost terms in ecco/ modularized (new cost_generic.F)
109    o cost_averages routines are modularized (new cost_averagesgeneric.F)
110    o new infrastructure for seaice model vs. obs misfits in seaice/
111      * driver from the_main_loop.F is seaice_cost_driver.F
112      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
113      * gradient check in Exp. 6a of natl_box_adjoint/
114    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
115      (see README file)
116    
117    checkpoint57q_post
118    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
119    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
120      - bug was reported by Jean-Michel and Ian Fenty
121    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
122      update exp. cpl_aim+ocn output.
123    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
124      Needed for high-res. runs with large global files
125      to be able to limit tapelev size
126    o Changed some tests for adjoint:
127      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
128      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
129      * global_ocean.90x40x15/ back to default 3-level checkpointing
130    o Modifications to enable scripted COMMON to MODULE conversion
131      * verification/OpenAD/code/ has necessary scripts and description;
132      * converts, compiles and runs successfully;
133    
134    checkpoint57p_post
135    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
136    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
137      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
138    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
139    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
140      (was already the case for dissipation with mom_vecinv,
141       and also the case for grad.PhiHyd when staggered-timeStep)
142      This will allow to put dissipation out-off the AB time-stepping.
143     Unfortunately, affects truncation error. Update output of exp. that "fails"
144      (cg2d matching number) and leave the others for later: front_relax(10),
145      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
146      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
147    
148    checkpoint57o_post
149    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
150      (2) its ready to be documented during the 20050801 DocFest
151    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
152      for ideal_2D_oce and lab_sea on linux_ia32_g77
153    o set to #undef CTRL_SET_OLD_MAXCVARS_30
154      in global1x1_tot/code_seaice_adj to access indices 32, 33
155      (worth another tag)
156    
157    checkpoint57n_post
158    o adding precip control xx_precip 32
159    o adding swflux control xx_swflux 33
160    o Replacing 10 forcing penalty cost routines by 1 generic.
161    o Implementing partitioning in time-mean and variable adjustment
162      for atmos. state.
163    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
164    o in natl_box_adjoint:
165      * updated exp 1 to 10
166        (but does not have time-mean vs. variable split results yet)
167    o updated global1x1/*_seaice_adj/
168      to incorporate latest changes
169    o enable useSingleCpuIO for mdsio vector routines
170      (applies in particular to tapelev I/O)
171    o removed inefficient K-loop in all active_file*control*.F
172    
173    checkpoint57m_post
174    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
175      and advect_cs (use EXCH-2 and standard cs-32 grid files).
176    o pkg/exch2: filling of face-corner halo regions is optional
177      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
178    
179    checkpoint57l_post
180     tag before updating tutorials (pre-release-2)
181    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
182       for output and interpolation of input fields onto model grid)
183    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
184       Affects results of exp. rotating_tank ; update output.txt.
185    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
186          and taking the square quantity and/or using a fraction-weight field.
187    o fix aim_diagnostics_init.F mate numbers.
188    o add mnc output capability to diagnostics/diagstat and update
189      our cvsignore files for the ACSII output generated
190    
191    checkpoint57k_post
192    o lab_sea now uses diagnostics package and provides a suite of
193      new EXF diagnostics output.
194    
195    checkpoint57j_post
196    o exf
197      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
198        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
199        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
200      * extended diagnostics output
201        - now includes all EXF variables
202        - hs, hl moved to common block
203        - separate S/R for diagnostics, called after ctrl vector is added
204        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
205        - EXFqnet contains true Qnet (i.e. includes qsw)
206      * updated verif. lab_sea, global_with_exf
207      * Rearranging hflux (exf_mapfields -> exf_getforcing)
208        to ensure that diagnostics sees a true EXFqnet
209    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
210    o diagnostics pkg: change pointers so that 1 diagnostic can be used
211      several times with different frequencies.
212    o mnc-ify the thsice package as requested by Daniel Enderton
213      - the monitor--MNC output needs work
214      - many attributes need to be added (most are currently blank)
215    o mnc-ify theaim_v23 package as requested by Daniel Enderton
216      - many attributes need to be added (most are currently blank)
217    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
218    o add Sadourny like discretization to the 4th.O vorticity advection scheme
219    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
220      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
221         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
222    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
223     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
224    
225    checkpoint57i_post
226    o Diagnostics package was changed: diagnostic allocation is now deactivated
227      by setting an empty file name in the namelist (used to be by setting 0 frequency)
228    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
229      add 1rst Order upwind vertical Shear.
230    o add a quick fix for A/B checkpointing in OFFLINE mode
231    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
232      end-run around the C/Fortran linking horror in eesup/src/timers.F
233    o added pkg/runclock: allows user to terminate run based on wall clock
234    o added non-hydrostatic scaling parameter: nh_am2
235    o pkg/my82: futile attempt to make results compiler-independent by adding
236      some "_d 0", etc. no effect.
237    o for mnc output, fill the 'T' coordinate var with myTime and create a
238      separate 'iter' variable for iteration count
239    o pkg/diagnostics:
240      add new capability: output of Global/Regional & per-level statistics ;
241      tested against monitor output (including land & thSIce) on various exp.
242    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
243    
244    checkpoint57h_done
245      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
246      data.diagnostics, data.gchem, data.ptracers) is done.
247    
248    o pkg/diagnostics: prepare for Global/Regional statistics.
249      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
250    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
251      and rename it: DIFFERENT_MULTIPLE
252    
253    checkpoint57h_post
254    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
255    o pkg/diagnostics: change output frequency, now in seconds (instead
256      of Nb of iterations). This requires to change data.diagnostics.
257    checkpoint57h_pre
258    
259    o in mnc, let the user create the output dir if both mnc_outdir_date
260      and mnc_outdir_num are false
261    o add fflags() to pkg/diagnostics which allows one to specify, on a
262      per-file basis, the file precision [default behavior is unchanged]
263    o added diagnostics to pkg/kpp, including computation of mixed layer
264      depth based on a temperature/density criterion
265    o updated verification/natl_box to test the new pkg/kpp diagnostics
266    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
267    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
268    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
269      not mnc -- this mistake was found by JMC and is now corrected
270    
271    checkpoint57g_post
272    o add Adams-Bashforth 3rd Order time stepping:
273      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
274      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
275    checkpoint57g_pre
276    
277    o make lambda[Theta,Salt]ClimRelax spatially varying
278      (default remains spatially uniform constant based on tau)
279    o added new control variables
280      * init. uVel, vVel, etanN
281      * lambda[Theta,Salt]ClimRelax
282    o separate masks used for ctrl_pack/unpack 'from write_grid' output
283      (suggested by G. Forget)
284    
285    checkpoint57f_post
286    o add parameter "baseTime" = model base time = time at iteration zero
287      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
288      account for baseTime shift
289    o move Coriolis arrays from PARAMS.h to GRID.h
290    checkpoint57f_pre
291    
292    o mnc-ifying the seaice package
293    o introduced an alternative length scale calculation for use in the limiting
294      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
295    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
296    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
297      as well as grad(vort3).  Made it compatible with both approximate form
298      for the cubed sphere and full form of these gradients.  Added flag
299      useFullLeith to select between approximate and full form.  
300    o add "d0" in getcon.F to reduce differences between compilers/platforms
301      update output.txt of exp. fizhi-gridalt-hs
302    o change port_rand funtion to allow to set the seed.
303    o fix obscure MNC bug involving conversion between reals and integers
304      - it caused no problems with certain (eg. gcc, ifc) compilers but the
305        new version is now more standards-compliant
306    o adjoint-related modifications
307      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
308      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
309      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
310    
311    checkpoint57e_post
312    o Adding eddy stress controls a la Ferreira et al.
313    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
314    
315    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
316      update output.txt of exp. fizhi-gridalt-hs
317    o add more "Z" dimensions and associated coordinate vars to MNC
318    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
319    o parameter calendarDumps: when set, approximate months (30-31 days) and years
320      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
321      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
322      months and years.  Requires pkg/cal.
323    o diagnostics: add pickup functionality
324      - off by default for backwards compatibility
325      - current version only uses MDSIO -- MNC will be added
326    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
327    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
328    
329    checkpoint57d_post
330    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
331    o modify verification/ideal_2D_oce so that it tests the creation of mnc
332      output from the diagnostics package
333    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
334    o make genmake2 more portable by using ".$FS" instead of ".f" for more
335      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
336    o add coordinate variables to the MNC output from the diagnostics package
337    o change MNC-flags default value: true when useMNC=TRUE
338    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
339      the ability (off by default) to read the grid information using MNC
340    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
341    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
342    o do snap-shot diagnostics at the middle of the time-interval (instead of
343      at the end).
344    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
345      new test for AIM with thSIce + slab-ocean
346    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
347    o move state variable diagnostics to the beginning of the time step ;
348      (note: still needs some work specially for snap-shot diagnostics)
349      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
350    
351    checkpoint57c_post
352    o Change testing option (-ieee) to get closer agreement between g77 & ifort
353    o generate new output.txt files on faulks with g77 & the new -ieee option
354    checkpoint57c_pre
355    
356    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
357      update output.txt of exp. global_ocean.90x40x15
358    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
359      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
360    o add saltFlux(+File) forcing capability with periodicExternalForcing
361    o allow to use pkg diagnostics for GM-Redi & ThSIce output
362    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
363    o improvements for the MNC output from DIAGNOSTICS:
364      - correct handling of the unlimitied dimension
365      - all dims now have associated coordinate variables
366      - variables located at U, V, and Corner ("Z") points are now written
367        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
368        *all* data points are output
369    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
370    o added pkg/seaice/seaice_monitor.F
371    o mdsio_readfield.F can now read files visible only to master MPI process.
372    o pkg/seaice: some test code for ice-modified ocean stress
373    o exf_getffields interpolation defaults to bilinear for all scalar forcing
374      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
375      spurious negative numbers for precipitation and humidity.  Will cause
376      some small numerical differences for integrations using pkg/exf/exf_interp.F.
377    o pkg/ctrl/
378      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
379        May be enabled via doPackDiag
380      *  introduce z-scaling of
381         + gradient (doZscalePack) and
382         + control (doZscaleUnpack)
383    o pkg/mdsio/
384      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
385      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
386    
387    checkpoint57b_post
388    o simplify options in diagnostics_fill arguments (remove weird combinations)
389    o fix MNC coordinate variables so that they now contain per-face index
390      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
391      general, EXCH2 grids are only aligned to a "local" coordinate system
392    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
393    o Implement instantaneous output within pkg diagnostics:
394      setting a negative frequency in data.diagnostics produces
395     "snap-shot" output (as opposed to time-average if freq > 0)
396    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
397      NOTE: change ptracer diagnostics name: use 2 characters to work with
398            more than 9 tracers. Add also diagnostics of advect & diffus flux.
399    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
400      becomes the coordinate variable for the 'T' dimension
401    o add CF-style coordinate variables to MNC
402      - just a first cut:  numbers are meaningless on the cubesphere and
403        missing along the T axis but otherwise it works!
404    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
405    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
406    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
407      this is based directly on what the model compute, so that the content of
408      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
409    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
410    o clean up build options files for SunOS, in particular
411      - remove -traditional from xmakedepend
412      - change -xarch=v9 to -xarch=native for f77
413      - restore use of make (not gmake)
414      - add CC=gcc if using g77
415    o changes per discussion of AM, JMC, & EH3 today:
416      - move redundant "grid" variables out of "state" -- in preparation of
417        creating proper CF-style coordinate variables and in recognition
418        that any/all grid variables can be easily copied (eg. w/NCO) from
419        the grid files into any of the other NetCDF files
420      - *always* output grid variables with MDSIO (this will eventually be
421        changed)
422      - output MNC grid file if useMNC is true
423    o every instance of _END_MASTER() has been found and replaced with
424      _END_MASTER( myThid ) in order to satisfy certain picky Sun
425      preprocessors
426    o re-arrange diagnostics pkg initialisation:
427     - allow each package to extend the available diagnostics list
428     - add some checking and fix small problems (multi-threaded, ...)
429     - new S/R diagnostics_fill (replace fill_diagnostics):
430       look through the short list of active diag. (instead of the long list)
431       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
432    
433    checkpoint57a_post
434    o this set of changes restores TAMC compatibility
435      tested for global_ocean.90x40x15 adjoint on trough
436      (what a pain)
437    
438    checkpoint57a_pre
439    o some modifs in tools/build_options for sunos
440    o call ctrl_pack for ctrl at end for optimcycle=0
441    
442    checkpoint57
443    o add horizontal bi-harmonic viscosity for vertical velocity
444      - new parameter viscA4W (defaults to viscA4)
445      - affects only non-hydrostatic code
446      - to be done: no-slip lateral boundary conditions
447    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
448    o implement Implicit Vertical advection for pTracers
449    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
450      (implemented also for implicit vertical diffusion & advection)
451    o OBCS: extend application of tracer open boundary conditions
452      to a strip beyond the boundary of width Olx/Oly
453    o add call monitor to TAF set of required calls (flow directives)
454      and include in natl_box_adjoint
455    o untangle a few ifdefs related to cost, ctrl, autodiff
456      untangel a few ALLOW_ECCO_OPTIMIZATION
457    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
458      (theta2, salt2 in ecco_cost_weights)
459    
460    checkpoint56c_post
461    o OBCS as control variables
462      - update ctrl_ad_diff.list, obcs_ad_diff.list
463      - remove balance of obcs controls from default
464      - fix index bug nobcs in ctrl_init
465      - fix dummy fields filen in ctrl_pack
466      - add dummy weights for obcs
467    o lsopt: comment out fort.94 output
468    o optim:
469      - remove unnecessary header files
470      - adjusted namelists
471      - add xerbla.F to Makefile
472    o exf:
473      - multiple modifications of exf_check_range
474      - unit change in exf_init_runoff from [m/year] to [m/s]
475    o mdsio:
476      - i/o-vector change debugLevel from debLevA to debLevB
477    
478    checkpoint56b_post
479    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
480      is called from DO_THE_MODEL_IO
481      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
482      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
483      - clean up PTRACERS_WRITE_TIMEAVE a little
484    o add another verification experiment that tests both the cfc-pkg and
485      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
486      reactive tendencies treated inline with regular timestepping
487    o testreport previously did a lousy job of comparing small numbers, so
488      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
489      implemented in the little c-progam tmp_cmpnum.c which is embedded in
490      testreport.
491    o ptracers_monitor: bug fix for MPI
492    
493    checkpoint56a_post
494    o GCHEM: finish reorganizating the package
495      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
496        (introduces another 3D-array for each passive tracer, but only if
497        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
498        gchemTendency is not needed because the timestep is done separately)
499      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
500      - GCHEM is now---more or less cleanly---separate from PTRACERS
501      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
502        so clear to me how that should be done in a general way.
503    o CFC: improve formatting of output in CFC_ATMOS
504    o PTRACERS:
505      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
506        that ALL experiments with ptracers enable can be checked. This makes
507        GCHEM_MONITOR obsolete.
508      - include a runtime parameter PTRACERS_monitorFreq that defaults to
509        monitorFreq
510      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
511    o add PTRACERS (PTR0[1-5]) to testreport output
512    o exf_check_range:
513      * default changed to .TRUE.
514      * will check values for niter0 if debLevA, every timestep if debLevB
515      * STOP in exf_check_range if 'out of range'
516      * range chosen generous to allow for potential extema
517      TBD: a version with stricter range
518           permitted range would be runtime parameters
519    o GMredi:
520      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
521      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
522      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
523    o GCHEM:
524      - move call to GCHEM_FORCING_SEP, so that it is now called before
525        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
526      - introduced a useGCHEM runtime flag and applied it everywhere.
527      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
528        this flag is now only visible within GCHEM-pkg routines.
529      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
530        be replaced by a 3D array that is computed before thermodynamics; for
531        this, the tracer ID iTracer had to be included into the parameter list
532        of ptracers_forcing
533      - set up forward_step to call gchem_forcing, that will replace
534        gchem_forcing_int in ptracers_forcing
535      - cleaning up
536    o small cleaning of exch2: remove files that are also in eesupp/src
537    
538    checkpoint56
539    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
540    o mnc: cleanup "full" files--fixes out-of-memory problem
541    o ECCO-GODAE
542      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
543      * fully merged and updated from SIO code
544        windstress sign change affects
545        - exf_inscal_[u/v]stress
546        - sign of xx_tau[u/v] adjustments
547        - signs in cost_scat
548      * ctrl_get_gen: avoid update of tau[u/v] for first few days
549      * natl_box_adjoint updated and compressed
550      * 2-level checkpoint switch added
551        (tested in EXP. 1 of natl_box_adjoint)
552      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
553    o SVD
554      * first complete, non-hacked version for SVD calculations
555      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
556        performed via direct access files admtlm_vector.it????
557        (via ctrl_[un]pack)
558      * optimcycle is used for ARPACK iteration counter
559        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
560      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
561        and add linear transforms where necessary
562      * controls are initial/final SST, SSS (can be extended; need to check
563        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
564    o mdsio: filename info to both stderr, stdout
565    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
566      from sign change
567    
568    checkpoint55j_post
569    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
570      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
571    o add consistent build directories and .cvsignore files to verification
572    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
573    o make all subroutines 30 or less characters in length for certain older
574      compilers to work (a thorough search only turns up two routines in
575      pkg/ptracers)
576    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
577      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
578    
579    checkpoint55i_post
580    o change arrays for total vertical diffusivity (2.D if explicit,
581      3.D if implicit) ; each ptracer uses its own background value.
582    o added mnc/NetCDF output capability to ocn_compon_interf
583      - added bits to verification/cpl_aim+ocn so that it can run on
584        ITRDA and other clusters without the mpirun "-wd" option
585    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
586      configuration
587    o give MNC the ability to create additional files rather than
588      exceeding a specified file size limit "MNC_MAX_FILESIZE"
589      - the default is just less than 2GB which is a practical limit
590        on many systems
591    o Compute the non-local term using either KPP vertical diffusivity (=default)
592       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
593    
594    checkpoint55h_post
595    o add verification test "vermix"
596    o remove all the *_ioinc flags and replace with the single global
597      outputTypesInclusive flag
598    o allow to set a vertical profile of vertical diffusivity for T & S
599    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
600    o useMNC moved from data.mnc to data.pkg
601    
602    checkpoint55g_post
603    o Renaming carbon AD experiments to comply with testreport conventions
604    o Updating adjoint of Held-Suarez hs94.1x64x5
605    o Fixing directives for non-ECCO forward_step, after ECCO directives
606      have been fixed to avoid recomp. of do_oceanic_phys
607      Works well for global_ocean.90x40x15,
608      but recomp. issue remains for carbon
609    o Updating adjoint output for natl_box_adjoint after
610      pkg/ecco has been modified (see taga c55d_post)
611    
612    checkpoint55f_post
613    o rename to timeave_init_fixed
614    
615    checkpoint55e_post
616    o some delicate re-shuffle of store directives to avoid one
617      extra call of do_oceanic_physics
618      affects ecco_the_main_loop.F, do_oceanic_physics.F
619      checkpoint_lev1_directives.h
620    o NB: this may break global_ocean adjoint temporarily,
621      but it is clear how to fix it. Will do later, need this now.
622    
623    checkpoint55d_post
624    o ECCO specific cost function terms (up-to-date with 1x1 runs)
625    o ecco_cost_weights is modified to 1x1 runs
626    o modifs to allow observations to be read in as
627      single file or yearly files
628    o enable to read exf forcing fields as either
629      single file or yearly files (flag useExfYearlyFields)
630    checkpoint55d_pre
631    
632    o switch between 2-level and 3-level checkpointing
633    o add ability of MNC to write local and "partial" (eg. 2D slices where
634      the full 3D field is never actually stored) arrays to NetCDF files
635      with the correct (that is, the complete multi-dimensional) set of
636      array indicies
637      - used in mom_vecinv() to write the diagFreq output
638      - tested (demonstrated) in verification/aim.5l_cs
639    o further mnc-ification
640      - add verification/lab_sea to the list with mnc setups
641      - fix undefined mnc v-names in cd_code
642      - add kpp to mnc output (both snapshot and timeave)
643    o non-hydrostatic code
644      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
645        in calc_gw.F
646      - defaults to viscAh
647      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
648        friction or Leith) in non-hydrostatic mode, as long as there is
649        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
650    o pkg/cost
651      extend simple cost functions to treat time mean quantities
652      (T,U,V) via cost_accumulate_state from cost_tile
653    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
654        be 2 times larger than the minimum size the advection scheme requires.
655        now get a perfect conservation of salt in advect_cs test-exp (updated)
656    o GGL90 (Gaspar's TKE mixed layer)
657      - add horizontal diffusion of TKE, requires exchanges in
658        do_fields_blocking_exchanges, horizontal diffusivity is zero by
659        default. In OPA there is no horizontal diffusion of TKE but the
660        mixing coefficients are computed from a horizontal average of TKE of
661        6 points or so. I think that diffusion has a little more physical
662        justification.
663      - clean up ggl90_calc in the hope of reducing memory usage (this hope
664        was in vain)
665      - mask tke-variable in ggl90_init
666    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
667    o fix biharmonic diffusion on CS-grid.
668    o more obcs stuff
669      - added obcs_external_fields_load as an alternative to the EXF-pkg option
670        for reading boundary values. This routine is called from
671        obcs_prescribe_read
672      - updated obcs_check
673      - changed sponge layer relaxation parameter units for days to seconds
674      - turned off sponge layer by default
675      - changed argument list of OBCS_CALC to myTime+deltaTclock
676      - fixed about 35 bugs in obcs_external_fields_load
677    
678    checkpoint55c_post
679    o obcs stuff
680      - new runtime flags useOBCSprescribe, useOBCSbalance
681      - re-arranged obcs_calc
682      - moved exf_getobcs to obcs_prescibe_read
683        obcs_prescibe_read is called after ORLANSKI stuff
684        and independent of it (executable can contain all).
685      - updated obcs_check
686      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
687        These may be necessary only if tangential velocities are
688        prescribed at OB, not sure, needs testing.
689    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
690      which simplifies the calls and passes the ifc check-bounds test
691    
692    checkpoint55b_post
693    o add a 2D scalar, Z location, exchange_2 routine.
694    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
695      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
696      affects advect_cs results (for the wrong reason): update output.txt
697    o use a more standard discretization for biharmonic viscosity ;
698     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
699      affects results of dome set-up: update output.txt
700    o fix gad_advection.F (CubedSphere part), back to version 1.23
701    o fix bug in mom_vi_del2uv.F (CubedSphere part).
702    
703    checkpoint55a_post
704    o merged code to
705      * prescribe/read time-dependent open boundaries
706        (works in conjunction with exf, cal)
707      * sponge layer code for open boundaries
708      * each boundary N/S/E/W now has its own CPP option
709        (healthy for the adjoint)
710    
711    checkpoint55
712    o up-to-date adjoint of previous breaks
713      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
714      - global_ocean_ebm: adjoint still needs fix (TLM ok)
715      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
716      - carbon: * remove tr1-related adjoint verification
717                * add ptracer as control variable
718    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
719      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
720    
721    checkpoint54f_post
722    o in verification/carbin/ remove experiment related to
723      ALLOW_PASSIVE_TRACER (array tr1 etc)
724      code_ad/ input_ad/ results_ad
725    
726    o add two new packages
727      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
728        + subject to optimization (memory)
729      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
730        + subject to reordering (many GOTOs in the original code)
731        + so far opps is called for every (i,j) point, and then operates in
732          the vertical; one may want to reorder the scheme in order operate in
733          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
734          fields)
735    o overhaul of IO so that we now have flags for MDSIO and/or MNC
736      - all verification tests compile and run with linux_ia32_g77
737      - defaults are compatible with current input files--nothing
738        should change if you were not previously using MNC
739      - MNC output has been added in numerous places (eg. timeave)
740        but there are still a few writes not yet do-able with MNC
741        (this is in progress)
742      - flags now allow for either/or/both use of MDSIO and MNC and
743        documentation will soon follow
744      - numerous small formatting cleanups for ProTeX
745    o add version info (via BUILD_INFO.h) to MNC and stdout
746    
747    checkpoint54e_post
748    o add two new packages
749      - pp81 (Packanowski and Philander, 1981), Richardson number and
750        stratification dependent mixing
751      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
752      - these scheme operate in a similar manner as KPP (without ghat, of
753        course), however there is only one diffusivity that is used for both
754        temperature and salinity (and passive tracers)ç
755    o add offline package
756    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
757      provided by Stephanie Dutkiewicz
758    o genmake2: add ability to search for C compilers and cleanup test output
759      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
760    
761    checkpoint54d_post
762    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
763    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
764      leading to additional shift by 5 days each year of integration
765       (i.e. leading to considerable offset over the years)
766    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
767    o start with no AB and no initial filtering (staggerTimeStep):
768      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
769    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
770      (external loading & cpl import/export stay in forward_step.F)
771    o update coupling interface to work with new staggerTimeStep
772    o change MDSIO ptracers_pickup.
773    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
774    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
775    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
776    
777    checkpoint54c_post
778    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
779      this affects (truncation error) output.txt of test-exp:
780       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
781    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
782    o change Qnet to always be the net heat flux, (+upward).
783      affects (truncation error) output of natl_box exp.: updated
784    o define the max number of passive tracers in PTRACERS_SIZE.h
785    o start to test mnc routinely in exp0
786    o add sea-ice loading (sIceLoad) as a new forcing field.
787    
788    checkpoint54b_post
789    o add testreport "-j JOBS" option for parallel builds (tested and pretty
790       impressive on Altix and Opteron systems)
791    o diagnostics can now write NetCDF files through the mnc package
792    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
793    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
794    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
795      affects (truncation error) output of lab_sea & natl_box exp.: updated
796    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
797    
798    checkpoint54a_post
799    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
800    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
801    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
802    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
803      + internal_wave (shift in writing cg2d_ini_res)
804    checkpoint54a_pre
805    
806    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
807      - modified verification/lab_sea and natl_box_adjoint accordingly
808    
809    checkpoint54
810    checkpoint53g_post
811    o prepare splitting of thermodynamics: store convect.counter in common block
812    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
813      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
814    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
815    o new parameter "nShapS": allow to treat differently S from T (nShapT)
816    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
817    o restore adjointability
818    
819    checkpoint53f_post
820    o modifications that affect AIM experiment results (update output.txt):
821      - no advection of S at top interface Nr (pkg/generic_advdiff)
822      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
823    o AIM pkg:
824      - include stability function into surf.Flux derivative relative to Tsurf
825      - calculate clear-sky radiation & surface temp. change (for diagnostics)
826    
827    checkpoint53e_post
828    o merged cylindrical coord configuration
829    o added rotating_tank experiment
830    checkpoint53e_pre
831    
832    checkpoint53d_post
833    o faulks upgraded: re-generate output.txt that have changed:
834       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
835    o Added Bryan and Lewis, 1979, vertical diffusivity profile
836    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
837    o added Sadourny discretization of Coriolis
838      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
839      - re-enabled use of omega3 (useAbsVorticity)
840    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
841      vector-invariant equations
842      - note: does *NOT* yet use same variable visc. for no-slip BC's.
843    o recoded the lateral boundary conditions for non-hydrostatic w, this time
844      hopefully without new bugs
845      - still to do: biharmonic friction for non-hydrostatic w
846    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
847    o regenerated output for global_ocean_ebm (using -ieee)
848    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
849      of mom_common/
850      - simple re-arrangement of instructions within computing loop
851    checkpoint53d_pre
852    
853    checkpoint53c_post
854    o new version of coupler for AIM+thSIce and Ocean models
855     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
856     - land: change Evaporation of snow
857     - aim with thSIce: fix bug in snow-precip.
858    o changes to calc_gw.F
859     - bug fix for w^2 term near the bottom boundary
860     - (hopefully) improve the lateral slip boundary condtions for use with
861        partial/looped cells
862      - because the bug fix changes two verification experiments anyway (exp5
863        and plume on slope), change the lateral boundary condition from half slip
864        to the value of no_slip_sides
865    o ebm package wasnt quite up to the parallel task. Fixed that.
866    o Adjoint of EBM package + verification
867      * TLM OK
868      * ADM not sufficient accuracy yet (needs further testing)
869    
870    checkpoint53b_post
871    o Commiting new energy balance model to repository
872      * package is pkg/ebm
873      * verif. is verification/global_ocean_ebm
874      * references are in ebm_driver.F
875    C      * X. Wang, P. Stone and J. Marotzke, 1999:
876    C        Global thermohaline circulation. Part I:
877    C        Sensitivity to atmospheric moisture transport.
878    C        J. Climate 12(1), 71-82
879    C      * X. Wang, P. Stone and J. Marotzke, 1999:
880    C        Global thermohaline circulation. Part II:
881    C        Sensitivity with interactive transport.
882    C        J. Climate 12(1), 83-91
883    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
884    C        Destabilization of the thermohaline circulation
885    C        by atmospheric eddy transports.
886    C        J. Climate 7(12), 1870-1882
887    o Will need long integration testing.
888    checkpoint53b_pre
889    
890    o created pkg/mom_common in preparation for variable viscosity code
891    o renamed and split ini_mnc_io
892    o pkg/land: only liquid water can diffuse or run-off
893    o AIM using land: soil wetness availability account for snow
894    o added printMapIncludesZeros to EEPARMS namelist
895    
896    checkpoint53a_post
897    o restore TAMC compatiility for exf_constants.h
898      (no usage of _d in .h)
899    o Additional storing in KPP in an attempt to fix
900      TAMC problem with adjoint of KPP code.
901      (no success...)
902      Identical code works fine with TAF.
903    o Fixed verification/natl_box_adjoint experiments.
904      Initial conditions for Experiments 4 and 5 are now
905      set to "SEAICE_initialHEFF=0", which is more reasonable,
906      and hence gives results closer to that of Experiment 2.
907      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
908    
909    checkpoint53
910    o stable checkpoint with up to date adjoint
911      TLM tests only run for 1st grdchk at the moment. Its unclear if
912      this is a code problem or a problem with resetting code for g_
913      variables that is being autogenerated wrong.
914      Otherwise:
915       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
916       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
917         are both still in chaos following their security messes.
918    
919    checkpoint52n_post
920    o various build (mostly genmake2) changes including:
921      - ability to build/run more easily within Cygwin and MacOS X
922      - more complicated Makefiles with a stronger dependence on Gnu Make
923    o pkg/seaice modifications
924      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
925        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
926        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
927      - changed proxy for geostrophic velocity and updated
928        verification/lab_sea/results/* accordingly
929      - removed ADI dynamic solver from pkg/seaice
930      - replaced all occurrences of 1/CSTICE or 1/CSUICE
931        they caused a segmentation fault under certain circumstances
932      - removed unused field WATR
933    o bug fix in exf-package:
934      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
935         now reflect that.
936    o small fixes in the cal-package:
937      - set reference date to first of January for the 'model'-calendar
938      - failing of cal_CheckDate in cal_FullDate now actually results in a
939        warning
940    o small modifications in exf-package to increase flexibility:
941      - change climtempfreeze from a constant to a runtime parameter that
942        is specified in data.exf_clim (default = -1.9)
943      - introduce runtime parameter windstressmax (default = 2.0) that is
944        specified in data.exf
945    o fix in pkg/thsice:
946      - update Evap (Tsf changes) to be consistent with Latent heat flux
947      - maintain snow precipitation unchanged (even if Tsf >=0).
948     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
949    
950    checkpoint52m_post
951    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
952      this does not change any of the results, because myIter=0 in swfrac always
953      lead to jwtype=2 (the default anyway), but the call makes little sense
954      as a default
955    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
956    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
957      atmospheric model (AIM) to use it ; add a "slab ocean" component.
958    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
959    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
960    o extending useSingleCpuIO option to work with new exch2 I/O format
961      - old-style, missing-tile I/O is still accessible by defining CPP
962        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
963    o monitor package can write to NetCDF files and/or STDOUT
964    o fix re-definition bug in MNC_GRID_INIT_ALL()
965    o doc/api_reference added
966      - a framework for building an API Reference Manual using all
967        the "protex" comments embedded in the code
968      - see pkg/generic_advdiff, pkg/mnc for examples
969    o MNC:
970      - make myThid the last argument for all subroutines
971      - new default for the grid files: NO halos
972      - add useMNC and other run-time flags
973      - separate per-file-group handling of the unlimited dimension
974      - early initialization of MNC w/ flags read at the eeboot stage
975        and lookup tables set in initialize_fixed
976      - write all MNC output to a freshly-created directory
977    o thermodynamics sea-ice (thsice) is now tested with testreport.
978    o test exp. advect_cs: use the standard cs32 grid ; update output.
979    o Added functionality to grdchk:
980      pick global i,j,k position (or nearest wet) where to perform check.
981    
982    checkpoint52l_post
983    o new land formulation:
984      a) use ground enthalpy as prognostic variable to ensure exact
985         energy conservation.
986      b) account for water temperature and for latent heat of freezing
987         in all processes (rain, run-off, ground storage)
988      c) compute surface and ground temperature implicitly.
989    o aim_v23 modification for new land model:
990      a) Treat separately land / ocean / sea-ice surface fluxes
991         to allow implicit computation of land & sea-ice surface temp.
992      b) add snow precipitation.
993    checkpoint52l_pre
994    
995    o fix problem (when 1 tile is empty) in min/max monitor.
996    o fix bug in timeAve (u,vZetatave in common block)
997    o no restoring terms under ice for pkg/seaice
998    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
999    o bug fix for pkg/seaice pickups
1000    o change MNC call locations and add coordinate attributes
1001    o mask vorticity at the corner ; affects global_ocean.cs output
1002    o fix ini_curvilinear_grid ; test CS experiments with mpi
1003    o aim.5l_cs: modify sea-ice fraction input file ; update output
1004    o exf: Adding simple range check routine for exf fields after read
1005    
1006    checkpoint52k_post
1007    o removed top-level directory "diags"
1008      - we migrated these functions to pkg/timeave a long time ago
1009    o fixed bug introduced in pkg/monitor
1010    o accuracy ctrlprec = 32 insuffient for gradient checks using
1011      averaged fields (I/O via cost_averages)
1012      -> use ctrl.h in active_file*.F to control I/O precision.
1013    o paramter list of CALL ADTHE_MAIN_LOOP
1014    o added initial do_the_model_io to ecco
1015    o set all ...Freq to zero after cost_final
1016      taveFreq, dumpFreq, pChkptFreq
1017    o MAIN and ECCO differentiability restored
1018    
1019    checkpoint52j_post
1020    o fix nchklev in tamc.h for global_ocean...
1021    o Bringing flow and store directives up-to-date
1022    o Really weird thing!
1023      call do_the_model_io from the_main_loop with parameters
1024      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
1025      TAF places a faulty re-call of initialise_varia
1026      after cost_final call which should not be there!
1027    checkpoint52j_pre
1028    
1029    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
1030      error messages
1031    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
1032    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
1033      debug output
1034    o modfied mdsio_writefield.F to handle non-global files under exch2
1035    o update AIM Cubed-Sphere exp (aim.5l_cs):
1036      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
1037    o update AIM Equatorial Channel exp:
1038      use standard aim_v23 pkg and change the SST fields to be more realistic.
1039    o globalFile now works with exch2
1040    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
1041      mon_vort3.F to make exch2 friendly with >1 tile per cube face
1042    o limit timeave output for hi-res integrations
1043    
1044    checkpoint52i_post
1045    o removed CPP_EEOPTIONS.h from verification/*/code
1046    o updated the tiling for global_ocean_pressure
1047    checkpoint52i_pre
1048    
1049    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
1050      the old pkg/aim).
1051    
1052    checkpoint52h_pre
1053    o shortened offending lines in exch2_send_rx?.template
1054    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
1055    o genmake2: add build & execute test for NetCDF code
1056    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
1057      old grid files, moved CPP_EEMACROS.h to pkg/exch2
1058    o added useSingleCPUIO flag to monitor.F and mon_out.F
1059    o added temporary hack for sea-ice dynamics on the cube:
1060      metric terms are ignored and it is assumed that
1061      there is no sea-ice on cube faces 1, 2, 4, and 5.
1062    
1063    checkpoint52f_post
1064    o added exch2 cube routines to pkg/exch2
1065    o modified hs94.cs-32x32x5 to use it
1066    o added new grid files to hs94.cs-32x32x5
1067    checkpoint52f_pre
1068    
1069    checkpoint52e_post
1070    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
1071      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
1072    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
1073      to work with implicit vertical advection and AB ;
1074    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
1075    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
1076     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
1077    checkpoint52e_pre
1078    
1079    o fix bug in impldiff when Nr=1 or Nr=2.
1080    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
1081    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
1082    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
1083      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
1084    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
1085    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
1086    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
1087    
1088    checkpoint52d_post
1089    o re-tiled many expts to allow comparison in multi-processor mode
1090      - updated output accordingly
1091      - changed hs94.128x64x5 to use intial T from file rather than use the
1092        random number generator
1093    o add infrastructure in model routines for fizhi and gridalt packages
1094    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
1095    o changes to permit hi-res, cubed-sphere, configuration
1096      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
1097      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
1098      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
1099        of surface winds for the cube
1100      (A verification experiment, based on global_ocean.cs32x15, but with
1101       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
1102       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
1103       complete with example surface forcing files and matlab scripts to look
1104       at the output and compare it with that of global_ocean.cs32x15.)
1105    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
1106       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
1107       to conform to the common rule.
1108    o check-in the first version of the coupler + interfaces for multi-components
1109       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
1110       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
1111       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
1112       - ocean and atmos. share the same horizontal grid (no interpolation).
1113       - exchanges between component and coupler is done in forward_step
1114    o new verification experiment, cpl_aim+ocn:
1115       coupled ocean - AIM atmosphere on cs32 grid.
1116    
1117    checkpoint52d_pre
1118    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
1119    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
1120    
1121    checkpoint52c_post
1122    o Fixing OPTIONS files for use of exf:
1123      - ALLOW_ECCO not needed
1124      - ECCO_CPPOPTIONS.h should not be included from
1125        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
1126        as has been the case in the past
1127      - All cal/exf related options are currently set in
1128        single header file. Should remain so until we
1129        agree on a consistent new policy.
1130    o Removed all CPP options for cal package.
1131      cal has no more CPP options.
1132    o modified STOREs in GAD_ADVECTION
1133    o corrected key comp. for passkey
1134    
1135    checkpoint52b_post
1136    o new version: "thsice" of thermodynamic sea-ice pkg:
1137     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
1138     - modify fluxes but do not change theta directly;
1139     - light cleaning of bulk_force pkg (still needed with thsice).
1140     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
1141       + output_thsice.txt to test thsice & bulk_force pkgs.
1142    o put back grid & coriolis monitor output.
1143    checkpoint52b_pre
1144    
1145    o call "do_the_model_io" at the beginning (=> dump initial state)
1146    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
1147    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
1148      (need info on NUMBER_OF_PTRACERS)
1149    o missing PTRACERS headers in some routines
1150    o default tamc.h in pkg/autodiff supposed to crash
1151      to ensure proper customization
1152    
1153    checkpoint52a_post
1154    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
1155      - moved surfaceTendencyTice from pkg/seaice to main code
1156      - subroutine FREEZE_SURFACE now limits only surface temperature
1157        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
1158        => new output.txt for global_ocean.cs32x15 & global_with_exf
1159      - keep the old version of FREEZE for backward compatibility;
1160        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
1161      - corresponding modifs for TAF directives
1162    o added surface flux output variables to TIMEAVE_STATVARS
1163    o time-averaged output for pkg/ptracers
1164    o fix problem with ECCO-related divided adjoint
1165      snapshot file was missing some ad-variables,
1166      but no warning issued by TAF
1167    
1168    checkpoint52a_pre
1169    o some bug fixes for #undef REAL4_IS_SLOW
1170    
1171    checkpoint52 = ecco_c52_e35
1172    o after testing adjoints of checkpoint51u_post
1173    
1174    checkpoint51u_post
1175    o this is the post-merge tag of the ecco-branch
1176      (needs another clean checkout and re-testing)
1177    o various natl_box_adjoint configs and results
1178      but no input fields
1179    o obcs adjoint not yet merged!
1180    o adding ECCO global 1x1 and 2x2 degree configs
1181    o updated/extended some store directives for seaice
1182    o pkg/ecco now containes ecco-specific part of cost function
1183    o top level routines the_main_loop, forward_step
1184      supersede those in model/src/
1185      previous input data.cost now in data.ecco
1186      (new namelist ecco_cost_nml)
1187    o in ctrl/ cleaned some cross-dependencies and updated CPP options
1188    
1189    checkpoint51t_post
1190    o this is the pre-merge tag of the ecco-branch
1191    
1192    checkpoint51s_post
1193    o cleanup: removed various obsolete #define-s
1194    o pkg/grdchk
1195      - renamed 'ph-grd 3' to 'grad-res'
1196      - merged from ecco-branch
1197        (remaining bug fixes for obcs gradient checks)
1198      - additional high-precision output for testreport
1199        (grep for 'precision_grdchk_result')
1200    
1201    checkpoint51r_post
1202    o cleaned up or removed CPP_OPTIONS.h files
1203    o updated results for some of the tests to reflect the new
1204      optfiles (-ieee: -O0 instead of -O3)
1205    
1206    checkpoint51q_post
1207    o cd_code:
1208      - moved cd_scheme.F -> cd_code_scheme.F
1209      - separate read_checkpoint from cd_code_ini_vars.F
1210      - separated cd_code part from write_checkpoint
1211      - updated AD_SOURCE, generated .flow
1212      - added CD_CODE_VARS.h to the_main_loop
1213      - Moving cd_code specific store dir.s to pkg/cd_code
1214    o ctrl package totally restructured
1215      - pack/unpack now optional and decoupled from
1216        xx_/adxx_ I/O
1217      - ctrl_pack/unpack cleaned
1218        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
1219      - confined inclusion of AD_CONFIG.h to where necessary.
1220    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
1221    
1222    checkpoint51p_post
1223    o create initial cd_code package
1224      - WARNING: the initialization of fields within packages
1225        is broken because INI_FIELDS (where READ_CHECKPOINT is
1226        called) is called *before* PACKAGES_INIT_VARIABLES.
1227        This seems to be backwards since
1228        1) its important to initially zero the entire field including
1229           the "halo" region
1230        2) zeroing needs to be done *before* reading pickup info
1231           and the pickup call might or might not happen in any
1232           particular run
1233      - this needs an overhaul for R2
1234    o cleanup verification/*/code/GMREDI_OPTIONS.h
1235    o cleanup testreport
1236    
1237    checkpoint51o_post
1238    o bringing AD-related verif's up to date with genmake2
1239      - carbon/
1240      - global_ocean.90x40x15/
1241      - hs.94.1x64x5/
1242      - (front_relax/ )
1243    o (more) consistent directory structure for AD-related verif.'s
1244    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
1245    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
1246    o bug fix in find_alpha.F for MDJWF:
1247      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
1248        change rho -> rho-rhoConst
1249      - replace call find_rho to find_rhonum
1250    o initialisation of rFlx extended to full array (required by TAF)
1251      and shifted to thermodynamics
1252    o removed PTRACERS.h in ptracers routine
1253    o added surfacetendencyPtr to S/R parameter list pracers_forcing
1254    o Correcting initialisations for fVerU, fVerV.
1255    o helping TAF to recognize dependency on kUp for
1256      fVerU, fVerV
1257    o Replacing delZ by delR in pkg/ctrl/
1258    checkpoint51o_pre
1259    
1260    o undid all of cp51 pending some cleanups and discussion
1261    o added the [#include "AD_CONFIG.h"] statement to all files that need
1262       it for adjoint/tl #defines
1263     o re-worked the build logic in genmake2 to support AD_CONFIG.h
1264     o removed tools/genmake since it no longer works
1265    
1266    checkpoint51n_post
1267    o modifications to make FREEZE flux visible to pkg/kpp
1268      - moved surfaceTendencyTice from pkg/seaice to main code
1269      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
1270      - subroutine FREEZE now limits only surface temperature
1271        (this means new output.txt for global_ocean.90x40x15,
1272         global_ocean.cs32x15, and global_with_exf)
1273    o added surface flux output variables to TIMEAVE_STATVARS
1274    
1275    checkpoint51n_pre
1276    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
1277    o added [#include "AD_CONFIG.h"] to all files that use the following
1278      defines:
1279      - ALLOW_ADJOINT_RUN
1280      - ALLOW_TANGENTLINEAR_RUN
1281      - ALLOW_ECCO_OPTIMIZATION
1282    
1283    checkpoint51m_post
1284    o incorporating changes to get TAMC/TAF working in genmake2
1285      - added new TAMC/TAF targets to the Makefile
1286      - various cleanups related to package handling
1287      - these changes should have no impact on the forward model
1288    
1289    checkpoint51l_post
1290    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
1291     - faster algorithm for cal_addtime.F
1292     - higher precision arithmetic, where needed
1293     - pkg/exf *startdate variables changed from calendar date to
1294       model integration time
1295    
1296    checkpoint51l_pre
1297    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
1298    o enable to apply restoring on S & T only in a latitude band.
1299    o update output (external_forcing_surf modif. change truncation errors)
1300       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
1301    
1302    checkpoint51k_post
1303    o change default to: useNHMTerms=.FALSE.
1304     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
1305       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
1306     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
1307        exp1, ideal_2D_oce
1308     - change data file of oceanic exp (leave the results unchanged for now)
1309       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
1310    o set gravitySign automatically according to the vertical coordinate used
1311      (and change sign: back to "logical" value: +1 when R increases downward)
1312    o added an include barrier to the default CPP_OPTIONS.h and
1313      removed the #include "PACKAGES_CONFIG.h" from it
1314    o fix a bug in mom_fluxform (from chk51j_post)
1315    
1316    checkpoint51j_post
1317    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
1318    o adjusted some flow directives (dynamics, thermodynamics)
1319    o added cubed-sphere case to test cost function
1320    o heckpoint_lev?_directives.h now include
1321      pkg-specific directives, whenever those are enabled.
1322    o Moving pkg-specific flow directives to corresponding pkg
1323      Moving pkg-specific differentiation list to corresponding pkg
1324      Moving pkg-specific checkpoint-lev storing to corresponding pkg
1325      ---> conventions are
1326           - pkg_ad.flow
1327           - pkg_ad_diff.list
1328           - pkg_ad_check_lev?_dir.h
1329    
1330    checkpoint51i_post
1331    o merge of the branch-genmake2
1332      - knowingly breaks the older genmake
1333      - automatic generation of all ALLOW_${PKG_NAME} defines
1334      - new testreport supersedes older testscript
1335    o large number of package inclusion and header cleanups
1336    checkpoint51i_pre
1337    
1338    o new output for adjoin of global ocean vector invariant
1339    o fix for checkpoint of thermodynamic seaice and bulk_force
1340    o Steph gchem various cleanups
1341    
1342    checkpoint 51h_pre
1343    o fixed some single quotes
1344    o modify gchem pkg to be more versatile
1345    o modifications to clean up dic pkg
1346    o add pkg/cfc
1347    
1348    checkpoint51g_post
1349    o provide links for ARPACK and ADM*TLM
1350    o start removing verification/vero/
1351    o update AD-related stuff
1352      (in particular some IF-statements in model/src/ routines)
1353    o adding to verification/global_ocean.90x40x15/ adjoint of
1354      vector invariant setup
1355    
1356    checkpoint51f_post
1357    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
1358    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
1359      of tracer Green's fucntions for ocean inversion project.
1360    
1361    checkpoint51f_pre
1362    o Added on-the-fly spatial interpolation capability
1363        "USE_EXF_INTERPOLATION" to pkg/exf.
1364      - This is a temporary Cartesian-grid hack until
1365        the super-duper ESMF coupler becomes available.
1366      - See verification/global_with_exf/README for usage example.
1367      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
1368        flags and modified pkg/seaice accordingly.
1369    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
1370        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
1371        non-local transport term.
1372    
1373    checkpoint51e_post
1374    o pkg/mom_vecinv:
1375      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
1376      - add time-ave diagnostic of vorticity advection.
1377    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
1378    o atmospheric geopotential: - include water vapor effect;
1379                                - use p^kappa in p* scaling.
1380    o land pkg: read initial state from files.
1381    o AIM : add stratospheric drag in the upper level
1382    
1383    checkpoint51d_post
1384    o change function ILNBLNK (=> last non-blank char.) to return zero
1385      (instead of the string length) when the string. char is empty
1386    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
1387    o modif's to restore TAMC compatibility
1388      - avoid "_d" constructs in PARAMETER declarations
1389      - avoid interrupting lines by comment lines
1390    o Use cluster local disks for purely local I/O
1391      vs. globally visible disks needed for ctrl stuff
1392      (merged from ecco-branch)
1393      - new active_file_loc... and mdsio_..._loc routines
1394      - affected packages: autodiff, ctrl, grdchk, mdsio
1395    
1396    checkpoint51c_post
1397    o introducing integer flag debugLevel
1398      - debLevZero: suppress all output
1399      - debLevA: standard
1400      - debLevB: equivalent to current debugMode=.TRUE.
1401    o introducing pathname variable mdsioLocalDir for mdsio
1402      that can be specified at runtime
1403      (relevant for cluster I/O to local disk)
1404    `
1405    >>>checkpoint51b_post
1406    adjoint of ptracers
1407    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
1408    o extended state in checkpoint_lev?, etc.
1409    o alternative ctrl/cost with tr1 or ptracer
1410    o new comlev1_bibj_ptracers
1411    o new ptracers.flow
1412    o made ptracers_forcing same as external_forcing_s
1413    o added verification for adjoint with ptracers
1414      - adm. grdchk fail so far
1415      - tlm. grdchk OK
1416      - checked tapelev/comlev recomputations: OK
1417    <<<checkpoint51b_pre
1418    
1419    checkpoint51a_post
1420    o added code for biogeochemistry package
1421      - new pkgs: dic, gchem
1422      - new subroutine in ptracers
1423    o modify code for biogeo packages
1424      - in model/src and pkg/ptracers
1425    
1426    checkpoint51
1427    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
1428      - autodiff, ctrl, exf, grdchk, seaice
1429      kept separate packages
1430      - cost, ecco, obcs
1431    o updating verification/internal_wave, verification/lab_sea
1432      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
1433    
1434    checkpoint50i_post
1435    o Preparing next differentiable checkpoint and sync
1436      of MAIN vs. ecco-branch
1437      - 1st step: this one is differentiable
1438      - 2nd step: next(! not this) checkpoint will have updated packages
1439                  from ecco-branch)
1440    
1441    checkpoint50h_post
1442    o new package "land": provide surface BC for AIM.
1443    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
1444    o AIM: use true log-P extrapolation for near surface temp (= as in
1445        F.Molteni paper) ; update aim.5l_cs output.
1446    o New variable in PARM03 for more flexible pickups
1447    o somewhat cleaned package initialisation sequence for
1448      ctrl/ cost/ ecco/ in packages_... routines
1449    
1450    checkpoint50g_post
1451    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
1452      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
1453      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
1454        made the default because of faster convergence than ADI
1455    
1456    checkpoint50f_post
1457    o exf totally restructured
1458      - replaced all exf_set_ routines by one generic exf_set_gen.F
1459        and made sure it's still differentiable
1460      - split exf_getffields.F into new exf_bulkformulae.F
1461      - exf_inscal_/exf_outscal_ suffixes consistent with field names
1462      - updated adjoint/makefile and relevant verif. accordingly
1463    
1464    checkpoint50f_pre
1465     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
1466          + change Evap over land. (update aim.5l_cs output)
1467     o added missing .cvsignores and made uniform across expts
1468     o changed configuration of tidal_basin_2d expt
1469     o added pkg/debug functions for tracing code in fatal crashes
1470     o tidied pkg/monitor to use MONITOR_OPTIONS.h
1471     o new fn in pkg/monitor to stop model if solution grows too big
1472     o removed lots of single quotes from comments
1473    
1474    checkpoint50e_post
1475    o make KPP work with PTRACERS
1476     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
1477       nearly a copy of kpp_transport_s
1478     - there is no analogue to SurfaceTendencyS, so I have to use
1479       gPtr(of the surface layer) instead
1480    o add a new platform SunFire+mpi (SunFire 15000) to genmake
1481    checkpoint50e_pre
1482    
1483    checkpoint50d_post
1484    o change kpp output from multiple-record state files to single-record state
1485      files analogous to write_state.F
1486    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
1487      analogous to the cg2d-related output.
1488    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
1489      so that writing to internal file fn (with length 512) fails.
1490    checkpoint50d_pre
1491    
1492    checkpoint50c_post
1493    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
1494    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
1495    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
1496    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
1497    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
1498    
1499    checkpoint50c_pre
1500    Merging from release1_p13:
1501    o bug fix for pkg/seaice dynamic solver
1502    o Added SEAICE_initialHEFF to pkg/seaice
1503    
1504    checkpoint50b_post
1505    o store u*,v* in gU,V instead of in guNm1,gvNm1
1506    o in order to put the momForcing out of the Adams-Bashforth:
1507      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
1508      to timestep.F
1509    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
1510    o re-generate output for highly sensitive test-exp:
1511       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
1512    
1513    checkpoint50b_pre
1514    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
1515    o corrected CPP option mismatch in exf_Bulk... functions for case
1516      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
1517    
1518  checkpoint50a_post  checkpoint50a_post
1519  o Bug fix for merging between c50 and KPP.  o Bug fix for merging between c50 and KPP.
1520    ikey was passed from thermodynamics to kpp_calc via    ikey was passed from thermodynamics to kpp_calc via

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