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revision 1.2 by cnh, Sat May 30 02:19:49 1998 UTC revision 1.569 by jmc, Wed Oct 12 02:13:40 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 vorticity & strain are now computed without masking, to account for
8      no-slip-side BC in variable viscosity calculation ; mask is applied
9      anyway later on, before computing advection/coriolis terms.
10    o modify exp4 to test new obcs support reading from external files
11      and for passive tracers
12    o fix behavior of ptracers_monitor when monitor output is written to a
13      netcdf-file; still not independent of monitor.F (writes in the same
14      file).
15    o change default value of tRef (put a uniform, meaningful value for ocean
16      & atmos) and initialize sRef (was missing, as Martin mentioned).
17    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
18      to be proportional to enstrophy dissipation length.  Thus,
19       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
20      This is now consistent with Smagorinsky and with the manual.
21    
22    checkpoint57u_post
23    o OBCS and PTRACERS: add open boundary support for passive tracers
24      - either use homogenous (pseudo) v.Neumann conditions or prescribe
25        OB-values from file; this is not different from the way theta and salinity
26        are treated
27      - however, Orlanski-radiation conditions are not supported, and the model
28        will stop if you use pTracers and Orlanski at the same time.
29      - beefed up the rountine obcs_external_fields_load: now only those open
30        boundary values are overwritten with values from files for which there
31        are really files, otherwise the OB-fields remain untouched. This makes
32        it possible to use different OBs at different ends of the domain (as
33        with EXF)
34    o reduce number of exch calls in shap_filt (s2).
35    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
36      truncation level) 4/5 MLAdjust test results (11&12 digits match).
37    
38    checkpoint57t_post
39    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
40    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
41      same truncation, independent of the face number: affects affects several
42      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
43    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
44      note that biharmonic viscosity + no-slip was not tested in any experiment.
45    o fix bug in non-linear free-surf side-drag ; generate new output for
46      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
47    o make mnc honor the writeBinaryPrec flag for most kinds of output
48    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
49    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
50      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
51    o add brackets in multi-terms sum to get same truncation, independent of
52      the face number (manage to get exactly same value of gU,gV at the cs-edge)
53      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
54    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
55      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
56      a maximum grid-scale Reynolds number.  Also, changes all length calculations
57      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
58      Suggested values of viscosity parameters found in mom_calc_visc.
59      Many new viscosity diagnostics available.
60    
61    checkpoint57s_post
62    o Add clearing-house for viscosity calculations, mom_calc_visc and
63      correct numerous bugs in LeithD and Smagorinsky discretizations.  
64      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
65      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
66      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
67      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
68      The Strain-Tension form is now called with useStrainTensonVisc=.true.
69      ViscAhStrain and viscAhTension are now retired.
70    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
71    o In response to JMC's bug report, genmake2 now ignores any soft-links
72      that it finds in the *current* directory when searching for files.
73      Soft-links found in any other source directories will still work as
74      they did before.
75    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
76      a C routine to unlimit the stack size
77    o mnc-ify pkg/aim snapshot vars
78    o mnc-ify pkg/land as requested by Daniel
79    o various changes to mnc including:
80      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
81      - output can now be grouped so that all files within a group
82          change the ITER portion of their names in lock-step together
83      - can now read ("global") PER-FACE (in addition to PER-TILE) files
84          and works with both EXCH1 and EXCH2 (but needs more testing)
85      - writing works for all verification test cases w/ g77 on Linux
86    
87    checkpoint57r_post
88    o make MNC variable initialization happen earlier
89    o add diagnostics for (almost) each term of the momentum Eq.
90    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
91    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
92    o remove MINIMAL_TAVE_OUTPUT option ;
93      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
94    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
95      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
96    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
97    o add time-dependent SST, SSS control
98    o cost terms in ecco/ modularized (new cost_generic.F)
99    o cost_averages routines are modularized (new cost_averagesgeneric.F)
100    o new infrastructure for seaice model vs. obs misfits in seaice/
101      * driver from the_main_loop.F is seaice_cost_driver.F
102      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
103      * gradient check in Exp. 6a of natl_box_adjoint/
104    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
105      (see README file)
106    
107    checkpoint57q_post
108    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
109    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
110      - bug was reported by Jean-Michel and Ian Fenty
111    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
112      update exp. cpl_aim+ocn output.
113    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
114      Needed for high-res. runs with large global files
115      to be able to limit tapelev size
116    o Changed some tests for adjoint:
117      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
118      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
119      * global_ocean.90x40x15/ back to default 3-level checkpointing
120    o Modifications to enable scripted COMMON to MODULE conversion
121      * verification/OpenAD/code/ has necessary scripts and description;
122      * converts, compiles and runs successfully;
123    
124    checkpoint57p_post
125    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
126    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
127      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
128    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
129    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
130      (was already the case for dissipation with mom_vecinv,
131       and also the case for grad.PhiHyd when staggered-timeStep)
132      This will allow to put dissipation out-off the AB time-stepping.
133     Unfortunately, affects truncation error. Update output of exp. that "fails"
134      (cg2d matching number) and leave the others for later: front_relax(10),
135      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
136      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
137    
138    checkpoint57o_post
139    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
140      (2) its ready to be documented during the 20050801 DocFest
141    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
142      for ideal_2D_oce and lab_sea on linux_ia32_g77
143    o set to #undef CTRL_SET_OLD_MAXCVARS_30
144      in global1x1_tot/code_seaice_adj to access indices 32, 33
145      (worth another tag)
146    
147    checkpoint57n_post
148    o adding precip control xx_precip 32
149    o adding swflux control xx_swflux 33
150    o Replacing 10 forcing penalty cost routines by 1 generic.
151    o Implementing partitioning in time-mean and variable adjustment
152      for atmos. state.
153    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
154    o in natl_box_adjoint:
155      * updated exp 1 to 10
156        (but does not have time-mean vs. variable split results yet)
157    o updated global1x1/*_seaice_adj/
158      to incorporate latest changes
159    o enable useSingleCpuIO for mdsio vector routines
160      (applies in particular to tapelev I/O)
161    o removed inefficient K-loop in all active_file*control*.F
162    
163    checkpoint57m_post
164    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
165      and advect_cs (use EXCH-2 and standard cs-32 grid files).
166    o pkg/exch2: filling of face-corner halo regions is optional
167      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
168    
169    checkpoint57l_post
170     tag before updating tutorials (pre-release-2)
171    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
172       for output and interpolation of input fields onto model grid)
173    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
174       Affects results of exp. rotating_tank ; update output.txt.
175    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
176          and taking the square quantity and/or using a fraction-weight field.
177    o fix aim_diagnostics_init.F mate numbers.
178    o add mnc output capability to diagnostics/diagstat and update
179      our cvsignore files for the ACSII output generated
180    
181    checkpoint57k_post
182    o lab_sea now uses diagnostics package and provides a suite of
183      new EXF diagnostics output.
184    
185    checkpoint57j_post
186    o exf
187      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
188        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
189        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
190      * extended diagnostics output
191        - now includes all EXF variables
192        - hs, hl moved to common block
193        - separate S/R for diagnostics, called after ctrl vector is added
194        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
195        - EXFqnet contains true Qnet (i.e. includes qsw)
196      * updated verif. lab_sea, global_with_exf
197      * Rearranging hflux (exf_mapfields -> exf_getforcing)
198        to ensure that diagnostics sees a true EXFqnet
199    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
200    o diagnostics pkg: change pointers so that 1 diagnostic can be used
201      several times with different frequencies.
202    o mnc-ify the thsice package as requested by Daniel Enderton
203      - the monitor--MNC output needs work
204      - many attributes need to be added (most are currently blank)
205    o mnc-ify theaim_v23 package as requested by Daniel Enderton
206      - many attributes need to be added (most are currently blank)
207    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
208    o add Sadourny like discretization to the 4th.O vorticity advection scheme
209    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
210      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
211         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
212    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
213     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
214    
215    checkpoint57i_post
216    o Diagnostics package was changed: diagnostic allocation is now deactivated
217      by setting an empty file name in the namelist (used to be by setting 0 frequency)
218    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
219      add 1rst Order upwind vertical Shear.
220    o add a quick fix for A/B checkpointing in OFFLINE mode
221    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
222      end-run around the C/Fortran linking horror in eesup/src/timers.F
223    o added pkg/runclock: allows user to terminate run based on wall clock
224    o added non-hydrostatic scaling parameter: nh_am2
225    o pkg/my82: futile attempt to make results compiler-independent by adding
226      some "_d 0", etc. no effect.
227    o for mnc output, fill the 'T' coordinate var with myTime and create a
228      separate 'iter' variable for iteration count
229    o pkg/diagnostics:
230      add new capability: output of Global/Regional & per-level statistics ;
231      tested against monitor output (including land & thSIce) on various exp.
232    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
233    
234    checkpoint57h_done
235      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
236      data.diagnostics, data.gchem, data.ptracers) is done.
237    
238    o pkg/diagnostics: prepare for Global/Regional statistics.
239      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
240    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
241      and rename it: DIFFERENT_MULTIPLE
242    
243    checkpoint57h_post
244    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
245    o pkg/diagnostics: change output frequency, now in seconds (instead
246      of Nb of iterations). This requires to change data.diagnostics.
247    checkpoint57h_pre
248    
249    o in mnc, let the user create the output dir if both mnc_outdir_date
250      and mnc_outdir_num are false
251    o add fflags() to pkg/diagnostics which allows one to specify, on a
252      per-file basis, the file precision [default behavior is unchanged]
253    o added diagnostics to pkg/kpp, including computation of mixed layer
254      depth based on a temperature/density criterion
255    o updated verification/natl_box to test the new pkg/kpp diagnostics
256    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
257    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
258    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
259      not mnc -- this mistake was found by JMC and is now corrected
260    
261    checkpoint57g_post
262    o add Adams-Bashforth 3rd Order time stepping:
263      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
264      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
265    checkpoint57g_pre
266    
267    o make lambda[Theta,Salt]ClimRelax spatially varying
268      (default remains spatially uniform constant based on tau)
269    o added new control variables
270      * init. uVel, vVel, etanN
271      * lambda[Theta,Salt]ClimRelax
272    o separate masks used for ctrl_pack/unpack 'from write_grid' output
273      (suggested by G. Forget)
274    
275    checkpoint57f_post
276    o add parameter "baseTime" = model base time = time at iteration zero
277      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
278      account for baseTime shift
279    o move Coriolis arrays from PARAMS.h to GRID.h
280    checkpoint57f_pre
281    
282    o mnc-ifying the seaice package
283    o introduced an alternative length scale calculation for use in the limiting
284      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
285    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
286    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
287      as well as grad(vort3).  Made it compatible with both approximate form
288      for the cubed sphere and full form of these gradients.  Added flag
289      useFullLeith to select between approximate and full form.  
290    o add "d0" in getcon.F to reduce differences between compilers/platforms
291      update output.txt of exp. fizhi-gridalt-hs
292    o change port_rand funtion to allow to set the seed.
293    o fix obscure MNC bug involving conversion between reals and integers
294      - it caused no problems with certain (eg. gcc, ifc) compilers but the
295        new version is now more standards-compliant
296    o adjoint-related modifications
297      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
298      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
299      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
300    
301    checkpoint57e_post
302    o Adding eddy stress controls a la Ferreira et al.
303    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
304    
305    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
306      update output.txt of exp. fizhi-gridalt-hs
307    o add more "Z" dimensions and associated coordinate vars to MNC
308    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
309    o parameter calendarDumps: when set, approximate months (30-31 days) and years
310      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
311      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
312      months and years.  Requires pkg/cal.
313    o diagnostics: add pickup functionality
314      - off by default for backwards compatibility
315      - current version only uses MDSIO -- MNC will be added
316    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
317    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
318    
319    checkpoint57d_post
320    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
321    o modify verification/ideal_2D_oce so that it tests the creation of mnc
322      output from the diagnostics package
323    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
324    o make genmake2 more portable by using ".$FS" instead of ".f" for more
325      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
326    o add coordinate variables to the MNC output from the diagnostics package
327    o change MNC-flags default value: true when useMNC=TRUE
328    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
329      the ability (off by default) to read the grid information using MNC
330    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
331    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
332    o do snap-shot diagnostics at the middle of the time-interval (instead of
333      at the end).
334    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
335      new test for AIM with thSIce + slab-ocean
336    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
337    o move state variable diagnostics to the beginning of the time step ;
338      (note: still needs some work specially for snap-shot diagnostics)
339      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
340    
341    checkpoint57c_post
342    o Change testing option (-ieee) to get closer agreement between g77 & ifort
343    o generate new output.txt files on faulks with g77 & the new -ieee option
344    checkpoint57c_pre
345    
346    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
347      update output.txt of exp. global_ocean.90x40x15
348    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
349      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
350    o add saltFlux(+File) forcing capability with periodicExternalForcing
351    o allow to use pkg diagnostics for GM-Redi & ThSIce output
352    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
353    o improvements for the MNC output from DIAGNOSTICS:
354      - correct handling of the unlimitied dimension
355      - all dims now have associated coordinate variables
356      - variables located at U, V, and Corner ("Z") points are now written
357        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
358        *all* data points are output
359    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
360    o added pkg/seaice/seaice_monitor.F
361    o mdsio_readfield.F can now read files visible only to master MPI process.
362    o pkg/seaice: some test code for ice-modified ocean stress
363    o exf_getffields interpolation defaults to bilinear for all scalar forcing
364      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
365      spurious negative numbers for precipitation and humidity.  Will cause
366      some small numerical differences for integrations using pkg/exf/exf_interp.F.
367    o pkg/ctrl/
368      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
369        May be enabled via doPackDiag
370      *  introduce z-scaling of
371         + gradient (doZscalePack) and
372         + control (doZscaleUnpack)
373    o pkg/mdsio/
374      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
375      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
376    
377    checkpoint57b_post
378    o simplify options in diagnostics_fill arguments (remove weird combinations)
379    o fix MNC coordinate variables so that they now contain per-face index
380      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
381      general, EXCH2 grids are only aligned to a "local" coordinate system
382    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
383    o Implement instantaneous output within pkg diagnostics:
384      setting a negative frequency in data.diagnostics produces
385     "snap-shot" output (as opposed to time-average if freq > 0)
386    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
387      NOTE: change ptracer diagnostics name: use 2 characters to work with
388            more than 9 tracers. Add also diagnostics of advect & diffus flux.
389    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
390      becomes the coordinate variable for the 'T' dimension
391    o add CF-style coordinate variables to MNC
392      - just a first cut:  numbers are meaningless on the cubesphere and
393        missing along the T axis but otherwise it works!
394    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
395    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
396    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
397      this is based directly on what the model compute, so that the content of
398      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
399    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
400    o clean up build options files for SunOS, in particular
401      - remove -traditional from xmakedepend
402      - change -xarch=v9 to -xarch=native for f77
403      - restore use of make (not gmake)
404      - add CC=gcc if using g77
405    o changes per discussion of AM, JMC, & EH3 today:
406      - move redundant "grid" variables out of "state" -- in preparation of
407        creating proper CF-style coordinate variables and in recognition
408        that any/all grid variables can be easily copied (eg. w/NCO) from
409        the grid files into any of the other NetCDF files
410      - *always* output grid variables with MDSIO (this will eventually be
411        changed)
412      - output MNC grid file if useMNC is true
413    o every instance of _END_MASTER() has been found and replaced with
414      _END_MASTER( myThid ) in order to satisfy certain picky Sun
415      preprocessors
416    o re-arrange diagnostics pkg initialisation:
417     - allow each package to extend the available diagnostics list
418     - add some checking and fix small problems (multi-threaded, ...)
419     - new S/R diagnostics_fill (replace fill_diagnostics):
420       look through the short list of active diag. (instead of the long list)
421       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
422    
423    checkpoint57a_post
424    o this set of changes restores TAMC compatibility
425      tested for global_ocean.90x40x15 adjoint on trough
426      (what a pain)
427    
428    checkpoint57a_pre
429    o some modifs in tools/build_options for sunos
430    o call ctrl_pack for ctrl at end for optimcycle=0
431    
432    checkpoint57
433    o add horizontal bi-harmonic viscosity for vertical velocity
434      - new parameter viscA4W (defaults to viscA4)
435      - affects only non-hydrostatic code
436      - to be done: no-slip lateral boundary conditions
437    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
438    o implement Implicit Vertical advection for pTracers
439    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
440      (implemented also for implicit vertical diffusion & advection)
441    o OBCS: extend application of tracer open boundary conditions
442      to a strip beyond the boundary of width Olx/Oly
443    o add call monitor to TAF set of required calls (flow directives)
444      and include in natl_box_adjoint
445    o untangle a few ifdefs related to cost, ctrl, autodiff
446      untangel a few ALLOW_ECCO_OPTIMIZATION
447    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
448      (theta2, salt2 in ecco_cost_weights)
449    
450    checkpoint56c_post
451    o OBCS as control variables
452      - update ctrl_ad_diff.list, obcs_ad_diff.list
453      - remove balance of obcs controls from default
454      - fix index bug nobcs in ctrl_init
455      - fix dummy fields filen in ctrl_pack
456      - add dummy weights for obcs
457    o lsopt: comment out fort.94 output
458    o optim:
459      - remove unnecessary header files
460      - adjusted namelists
461      - add xerbla.F to Makefile
462    o exf:
463      - multiple modifications of exf_check_range
464      - unit change in exf_init_runoff from [m/year] to [m/s]
465    o mdsio:
466      - i/o-vector change debugLevel from debLevA to debLevB
467    
468    checkpoint56b_post
469    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
470      is called from DO_THE_MODEL_IO
471      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
472      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
473      - clean up PTRACERS_WRITE_TIMEAVE a little
474    o add another verification experiment that tests both the cfc-pkg and
475      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
476      reactive tendencies treated inline with regular timestepping
477    o testreport previously did a lousy job of comparing small numbers, so
478      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
479      implemented in the little c-progam tmp_cmpnum.c which is embedded in
480      testreport.
481    o ptracers_monitor: bug fix for MPI
482    
483    checkpoint56a_post
484    o GCHEM: finish reorganizating the package
485      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
486        (introduces another 3D-array for each passive tracer, but only if
487        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
488        gchemTendency is not needed because the timestep is done separately)
489      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
490      - GCHEM is now---more or less cleanly---separate from PTRACERS
491      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
492        so clear to me how that should be done in a general way.
493    o CFC: improve formatting of output in CFC_ATMOS
494    o PTRACERS:
495      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
496        that ALL experiments with ptracers enable can be checked. This makes
497        GCHEM_MONITOR obsolete.
498      - include a runtime parameter PTRACERS_monitorFreq that defaults to
499        monitorFreq
500      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
501    o add PTRACERS (PTR0[1-5]) to testreport output
502    o exf_check_range:
503      * default changed to .TRUE.
504      * will check values for niter0 if debLevA, every timestep if debLevB
505      * STOP in exf_check_range if 'out of range'
506      * range chosen generous to allow for potential extema
507      TBD: a version with stricter range
508           permitted range would be runtime parameters
509    o GMredi:
510      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
511      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
512      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
513    o GCHEM:
514      - move call to GCHEM_FORCING_SEP, so that it is now called before
515        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
516      - introduced a useGCHEM runtime flag and applied it everywhere.
517      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
518        this flag is now only visible within GCHEM-pkg routines.
519      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
520        be replaced by a 3D array that is computed before thermodynamics; for
521        this, the tracer ID iTracer had to be included into the parameter list
522        of ptracers_forcing
523      - set up forward_step to call gchem_forcing, that will replace
524        gchem_forcing_int in ptracers_forcing
525      - cleaning up
526    o small cleaning of exch2: remove files that are also in eesupp/src
527    
528    checkpoint56
529    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
530    o mnc: cleanup "full" files--fixes out-of-memory problem
531    o ECCO-GODAE
532      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
533      * fully merged and updated from SIO code
534        windstress sign change affects
535        - exf_inscal_[u/v]stress
536        - sign of xx_tau[u/v] adjustments
537        - signs in cost_scat
538      * ctrl_get_gen: avoid update of tau[u/v] for first few days
539      * natl_box_adjoint updated and compressed
540      * 2-level checkpoint switch added
541        (tested in EXP. 1 of natl_box_adjoint)
542      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
543    o SVD
544      * first complete, non-hacked version for SVD calculations
545      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
546        performed via direct access files admtlm_vector.it????
547        (via ctrl_[un]pack)
548      * optimcycle is used for ARPACK iteration counter
549        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
550      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
551        and add linear transforms where necessary
552      * controls are initial/final SST, SSS (can be extended; need to check
553        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
554    o mdsio: filename info to both stderr, stdout
555    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
556      from sign change
557    
558    checkpoint55j_post
559    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
560      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
561    o add consistent build directories and .cvsignore files to verification
562    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
563    o make all subroutines 30 or less characters in length for certain older
564      compilers to work (a thorough search only turns up two routines in
565      pkg/ptracers)
566    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
567      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
568    
569    checkpoint55i_post
570    o change arrays for total vertical diffusivity (2.D if explicit,
571      3.D if implicit) ; each ptracer uses its own background value.
572    o added mnc/NetCDF output capability to ocn_compon_interf
573      - added bits to verification/cpl_aim+ocn so that it can run on
574        ITRDA and other clusters without the mpirun "-wd" option
575    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
576      configuration
577    o give MNC the ability to create additional files rather than
578      exceeding a specified file size limit "MNC_MAX_FILESIZE"
579      - the default is just less than 2GB which is a practical limit
580        on many systems
581    o Compute the non-local term using either KPP vertical diffusivity (=default)
582       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
583    
584    checkpoint55h_post
585    o add verification test "vermix"
586    o remove all the *_ioinc flags and replace with the single global
587      outputTypesInclusive flag
588    o allow to set a vertical profile of vertical diffusivity for T & S
589    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
590    o useMNC moved from data.mnc to data.pkg
591    
592    checkpoint55g_post
593    o Renaming carbon AD experiments to comply with testreport conventions
594    o Updating adjoint of Held-Suarez hs94.1x64x5
595    o Fixing directives for non-ECCO forward_step, after ECCO directives
596      have been fixed to avoid recomp. of do_oceanic_phys
597      Works well for global_ocean.90x40x15,
598      but recomp. issue remains for carbon
599    o Updating adjoint output for natl_box_adjoint after
600      pkg/ecco has been modified (see taga c55d_post)
601    
602    checkpoint55f_post
603    o rename to timeave_init_fixed
604    
605    checkpoint55e_post
606    o some delicate re-shuffle of store directives to avoid one
607      extra call of do_oceanic_physics
608      affects ecco_the_main_loop.F, do_oceanic_physics.F
609      checkpoint_lev1_directives.h
610    o NB: this may break global_ocean adjoint temporarily,
611      but it is clear how to fix it. Will do later, need this now.
612    
613    checkpoint55d_post
614    o ECCO specific cost function terms (up-to-date with 1x1 runs)
615    o ecco_cost_weights is modified to 1x1 runs
616    o modifs to allow observations to be read in as
617      single file or yearly files
618    o enable to read exf forcing fields as either
619      single file or yearly files (flag useExfYearlyFields)
620    checkpoint55d_pre
621    
622    o switch between 2-level and 3-level checkpointing
623    o add ability of MNC to write local and "partial" (eg. 2D slices where
624      the full 3D field is never actually stored) arrays to NetCDF files
625      with the correct (that is, the complete multi-dimensional) set of
626      array indicies
627      - used in mom_vecinv() to write the diagFreq output
628      - tested (demonstrated) in verification/aim.5l_cs
629    o further mnc-ification
630      - add verification/lab_sea to the list with mnc setups
631      - fix undefined mnc v-names in cd_code
632      - add kpp to mnc output (both snapshot and timeave)
633    o non-hydrostatic code
634      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
635        in calc_gw.F
636      - defaults to viscAh
637      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
638        friction or Leith) in non-hydrostatic mode, as long as there is
639        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
640    o pkg/cost
641      extend simple cost functions to treat time mean quantities
642      (T,U,V) via cost_accumulate_state from cost_tile
643    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
644        be 2 times larger than the minimum size the advection scheme requires.
645        now get a perfect conservation of salt in advect_cs test-exp (updated)
646    o GGL90 (Gaspar's TKE mixed layer)
647      - add horizontal diffusion of TKE, requires exchanges in
648        do_fields_blocking_exchanges, horizontal diffusivity is zero by
649        default. In OPA there is no horizontal diffusion of TKE but the
650        mixing coefficients are computed from a horizontal average of TKE of
651        6 points or so. I think that diffusion has a little more physical
652        justification.
653      - clean up ggl90_calc in the hope of reducing memory usage (this hope
654        was in vain)
655      - mask tke-variable in ggl90_init
656    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
657    o fix biharmonic diffusion on CS-grid.
658    o more obcs stuff
659      - added obcs_external_fields_load as an alternative to the EXF-pkg option
660        for reading boundary values. This routine is called from
661        obcs_prescribe_read
662      - updated obcs_check
663      - changed sponge layer relaxation parameter units for days to seconds
664      - turned off sponge layer by default
665      - changed argument list of OBCS_CALC to myTime+deltaTclock
666      - fixed about 35 bugs in obcs_external_fields_load
667    
668    checkpoint55c_post
669    o obcs stuff
670      - new runtime flags useOBCSprescribe, useOBCSbalance
671      - re-arranged obcs_calc
672      - moved exf_getobcs to obcs_prescibe_read
673        obcs_prescibe_read is called after ORLANSKI stuff
674        and independent of it (executable can contain all).
675      - updated obcs_check
676      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
677        These may be necessary only if tangential velocities are
678        prescribed at OB, not sure, needs testing.
679    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
680      which simplifies the calls and passes the ifc check-bounds test
681    
682    checkpoint55b_post
683    o add a 2D scalar, Z location, exchange_2 routine.
684    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
685      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
686      affects advect_cs results (for the wrong reason): update output.txt
687    o use a more standard discretization for biharmonic viscosity ;
688     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
689      affects results of dome set-up: update output.txt
690    o fix gad_advection.F (CubedSphere part), back to version 1.23
691    o fix bug in mom_vi_del2uv.F (CubedSphere part).
692    
693    checkpoint55a_post
694    o merged code to
695      * prescribe/read time-dependent open boundaries
696        (works in conjunction with exf, cal)
697      * sponge layer code for open boundaries
698      * each boundary N/S/E/W now has its own CPP option
699        (healthy for the adjoint)
700    
701    checkpoint55
702    o up-to-date adjoint of previous breaks
703      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
704      - global_ocean_ebm: adjoint still needs fix (TLM ok)
705      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
706      - carbon: * remove tr1-related adjoint verification
707                * add ptracer as control variable
708    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
709      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
710    
711    checkpoint54f_post
712    o in verification/carbin/ remove experiment related to
713      ALLOW_PASSIVE_TRACER (array tr1 etc)
714      code_ad/ input_ad/ results_ad
715    
716    o add two new packages
717      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
718        + subject to optimization (memory)
719      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
720        + subject to reordering (many GOTOs in the original code)
721        + so far opps is called for every (i,j) point, and then operates in
722          the vertical; one may want to reorder the scheme in order operate in
723          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
724          fields)
725    o overhaul of IO so that we now have flags for MDSIO and/or MNC
726      - all verification tests compile and run with linux_ia32_g77
727      - defaults are compatible with current input files--nothing
728        should change if you were not previously using MNC
729      - MNC output has been added in numerous places (eg. timeave)
730        but there are still a few writes not yet do-able with MNC
731        (this is in progress)
732      - flags now allow for either/or/both use of MDSIO and MNC and
733        documentation will soon follow
734      - numerous small formatting cleanups for ProTeX
735    o add version info (via BUILD_INFO.h) to MNC and stdout
736    
737    checkpoint54e_post
738    o add two new packages
739      - pp81 (Packanowski and Philander, 1981), Richardson number and
740        stratification dependent mixing
741      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
742      - these scheme operate in a similar manner as KPP (without ghat, of
743        course), however there is only one diffusivity that is used for both
744        temperature and salinity (and passive tracers)ç
745    o add offline package
746    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
747      provided by Stephanie Dutkiewicz
748    o genmake2: add ability to search for C compilers and cleanup test output
749      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
750    
751    checkpoint54d_post
752    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
753    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
754      leading to additional shift by 5 days each year of integration
755       (i.e. leading to considerable offset over the years)
756    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
757    o start with no AB and no initial filtering (staggerTimeStep):
758      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
759    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
760      (external loading & cpl import/export stay in forward_step.F)
761    o update coupling interface to work with new staggerTimeStep
762    o change MDSIO ptracers_pickup.
763    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
764    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
765    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
766    
767    checkpoint54c_post
768    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
769      this affects (truncation error) output.txt of test-exp:
770       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
771    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
772    o change Qnet to always be the net heat flux, (+upward).
773      affects (truncation error) output of natl_box exp.: updated
774    o define the max number of passive tracers in PTRACERS_SIZE.h
775    o start to test mnc routinely in exp0
776    o add sea-ice loading (sIceLoad) as a new forcing field.
777    
778    checkpoint54b_post
779    o add testreport "-j JOBS" option for parallel builds (tested and pretty
780       impressive on Altix and Opteron systems)
781    o diagnostics can now write NetCDF files through the mnc package
782    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
783    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
784    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
785      affects (truncation error) output of lab_sea & natl_box exp.: updated
786    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
787    
788    checkpoint54a_post
789    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
790    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
791    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
792    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
793      + internal_wave (shift in writing cg2d_ini_res)
794    checkpoint54a_pre
795    
796    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
797      - modified verification/lab_sea and natl_box_adjoint accordingly
798    
799    checkpoint54
800    checkpoint53g_post
801    o prepare splitting of thermodynamics: store convect.counter in common block
802    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
803      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
804    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
805    o new parameter "nShapS": allow to treat differently S from T (nShapT)
806    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
807    o restore adjointability
808    
809    checkpoint53f_post
810    o modifications that affect AIM experiment results (update output.txt):
811      - no advection of S at top interface Nr (pkg/generic_advdiff)
812      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
813    o AIM pkg:
814      - include stability function into surf.Flux derivative relative to Tsurf
815      - calculate clear-sky radiation & surface temp. change (for diagnostics)
816    
817    checkpoint53e_post
818    o merged cylindrical coord configuration
819    o added rotating_tank experiment
820    checkpoint53e_pre
821    
822    checkpoint53d_post
823    o faulks upgraded: re-generate output.txt that have changed:
824       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
825    o Added Bryan and Lewis, 1979, vertical diffusivity profile
826    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
827    o added Sadourny discretization of Coriolis
828      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
829      - re-enabled use of omega3 (useAbsVorticity)
830    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
831      vector-invariant equations
832      - note: does *NOT* yet use same variable visc. for no-slip BC's.
833    o recoded the lateral boundary conditions for non-hydrostatic w, this time
834      hopefully without new bugs
835      - still to do: biharmonic friction for non-hydrostatic w
836    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
837    o regenerated output for global_ocean_ebm (using -ieee)
838    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
839      of mom_common/
840      - simple re-arrangement of instructions within computing loop
841    checkpoint53d_pre
842    
843    checkpoint53c_post
844    o new version of coupler for AIM+thSIce and Ocean models
845     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
846     - land: change Evaporation of snow
847     - aim with thSIce: fix bug in snow-precip.
848    o changes to calc_gw.F
849     - bug fix for w^2 term near the bottom boundary
850     - (hopefully) improve the lateral slip boundary condtions for use with
851        partial/looped cells
852      - because the bug fix changes two verification experiments anyway (exp5
853        and plume on slope), change the lateral boundary condition from half slip
854        to the value of no_slip_sides
855    o ebm package wasnt quite up to the parallel task. Fixed that.
856    o Adjoint of EBM package + verification
857      * TLM OK
858      * ADM not sufficient accuracy yet (needs further testing)
859    
860    checkpoint53b_post
861    o Commiting new energy balance model to repository
862      * package is pkg/ebm
863      * verif. is verification/global_ocean_ebm
864      * references are in ebm_driver.F
865    C      * X. Wang, P. Stone and J. Marotzke, 1999:
866    C        Global thermohaline circulation. Part I:
867    C        Sensitivity to atmospheric moisture transport.
868    C        J. Climate 12(1), 71-82
869    C      * X. Wang, P. Stone and J. Marotzke, 1999:
870    C        Global thermohaline circulation. Part II:
871    C        Sensitivity with interactive transport.
872    C        J. Climate 12(1), 83-91
873    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
874    C        Destabilization of the thermohaline circulation
875    C        by atmospheric eddy transports.
876    C        J. Climate 7(12), 1870-1882
877    o Will need long integration testing.
878    checkpoint53b_pre
879    
880    o created pkg/mom_common in preparation for variable viscosity code
881    o renamed and split ini_mnc_io
882    o pkg/land: only liquid water can diffuse or run-off
883    o AIM using land: soil wetness availability account for snow
884    o added printMapIncludesZeros to EEPARMS namelist
885    
886    checkpoint53a_post
887    o restore TAMC compatiility for exf_constants.h
888      (no usage of _d in .h)
889    o Additional storing in KPP in an attempt to fix
890      TAMC problem with adjoint of KPP code.
891      (no success...)
892      Identical code works fine with TAF.
893    o Fixed verification/natl_box_adjoint experiments.
894      Initial conditions for Experiments 4 and 5 are now
895      set to "SEAICE_initialHEFF=0", which is more reasonable,
896      and hence gives results closer to that of Experiment 2.
897      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
898    
899    checkpoint53
900    o stable checkpoint with up to date adjoint
901      TLM tests only run for 1st grdchk at the moment. Its unclear if
902      this is a code problem or a problem with resetting code for g_
903      variables that is being autogenerated wrong.
904      Otherwise:
905       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
906       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
907         are both still in chaos following their security messes.
908    
909    checkpoint52n_post
910    o various build (mostly genmake2) changes including:
911      - ability to build/run more easily within Cygwin and MacOS X
912      - more complicated Makefiles with a stronger dependence on Gnu Make
913    o pkg/seaice modifications
914      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
915        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
916        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
917      - changed proxy for geostrophic velocity and updated
918        verification/lab_sea/results/* accordingly
919      - removed ADI dynamic solver from pkg/seaice
920      - replaced all occurrences of 1/CSTICE or 1/CSUICE
921        they caused a segmentation fault under certain circumstances
922      - removed unused field WATR
923    o bug fix in exf-package:
924      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
925         now reflect that.
926    o small fixes in the cal-package:
927      - set reference date to first of January for the 'model'-calendar
928      - failing of cal_CheckDate in cal_FullDate now actually results in a
929        warning
930    o small modifications in exf-package to increase flexibility:
931      - change climtempfreeze from a constant to a runtime parameter that
932        is specified in data.exf_clim (default = -1.9)
933      - introduce runtime parameter windstressmax (default = 2.0) that is
934        specified in data.exf
935    o fix in pkg/thsice:
936      - update Evap (Tsf changes) to be consistent with Latent heat flux
937      - maintain snow precipitation unchanged (even if Tsf >=0).
938     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
939    
940    checkpoint52m_post
941    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
942      this does not change any of the results, because myIter=0 in swfrac always
943      lead to jwtype=2 (the default anyway), but the call makes little sense
944      as a default
945    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
946    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
947      atmospheric model (AIM) to use it ; add a "slab ocean" component.
948    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
949    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
950    o extending useSingleCpuIO option to work with new exch2 I/O format
951      - old-style, missing-tile I/O is still accessible by defining CPP
952        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
953    o monitor package can write to NetCDF files and/or STDOUT
954    o fix re-definition bug in MNC_GRID_INIT_ALL()
955    o doc/api_reference added
956      - a framework for building an API Reference Manual using all
957        the "protex" comments embedded in the code
958      - see pkg/generic_advdiff, pkg/mnc for examples
959    o MNC:
960      - make myThid the last argument for all subroutines
961      - new default for the grid files: NO halos
962      - add useMNC and other run-time flags
963      - separate per-file-group handling of the unlimited dimension
964      - early initialization of MNC w/ flags read at the eeboot stage
965        and lookup tables set in initialize_fixed
966      - write all MNC output to a freshly-created directory
967    o thermodynamics sea-ice (thsice) is now tested with testreport.
968    o test exp. advect_cs: use the standard cs32 grid ; update output.
969    o Added functionality to grdchk:
970      pick global i,j,k position (or nearest wet) where to perform check.
971    
972    checkpoint52l_post
973    o new land formulation:
974      a) use ground enthalpy as prognostic variable to ensure exact
975         energy conservation.
976      b) account for water temperature and for latent heat of freezing
977         in all processes (rain, run-off, ground storage)
978      c) compute surface and ground temperature implicitly.
979    o aim_v23 modification for new land model:
980      a) Treat separately land / ocean / sea-ice surface fluxes
981         to allow implicit computation of land & sea-ice surface temp.
982      b) add snow precipitation.
983    checkpoint52l_pre
984    
985    o fix problem (when 1 tile is empty) in min/max monitor.
986    o fix bug in timeAve (u,vZetatave in common block)
987    o no restoring terms under ice for pkg/seaice
988    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
989    o bug fix for pkg/seaice pickups
990    o change MNC call locations and add coordinate attributes
991    o mask vorticity at the corner ; affects global_ocean.cs output
992    o fix ini_curvilinear_grid ; test CS experiments with mpi
993    o aim.5l_cs: modify sea-ice fraction input file ; update output
994    o exf: Adding simple range check routine for exf fields after read
995    
996    checkpoint52k_post
997    o removed top-level directory "diags"
998      - we migrated these functions to pkg/timeave a long time ago
999    o fixed bug introduced in pkg/monitor
1000    o accuracy ctrlprec = 32 insuffient for gradient checks using
1001      averaged fields (I/O via cost_averages)
1002      -> use ctrl.h in active_file*.F to control I/O precision.
1003    o paramter list of CALL ADTHE_MAIN_LOOP
1004    o added initial do_the_model_io to ecco
1005    o set all ...Freq to zero after cost_final
1006      taveFreq, dumpFreq, pChkptFreq
1007    o MAIN and ECCO differentiability restored
1008    
1009    checkpoint52j_post
1010    o fix nchklev in tamc.h for global_ocean...
1011    o Bringing flow and store directives up-to-date
1012    o Really weird thing!
1013      call do_the_model_io from the_main_loop with parameters
1014      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
1015      TAF places a faulty re-call of initialise_varia
1016      after cost_final call which should not be there!
1017    checkpoint52j_pre
1018    
1019    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
1020      error messages
1021    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
1022    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
1023      debug output
1024    o modfied mdsio_writefield.F to handle non-global files under exch2
1025    o update AIM Cubed-Sphere exp (aim.5l_cs):
1026      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
1027    o update AIM Equatorial Channel exp:
1028      use standard aim_v23 pkg and change the SST fields to be more realistic.
1029    o globalFile now works with exch2
1030    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
1031      mon_vort3.F to make exch2 friendly with >1 tile per cube face
1032    o limit timeave output for hi-res integrations
1033    
1034    checkpoint52i_post
1035    o removed CPP_EEOPTIONS.h from verification/*/code
1036    o updated the tiling for global_ocean_pressure
1037    checkpoint52i_pre
1038    
1039    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
1040      the old pkg/aim).
1041    
1042    checkpoint52h_pre
1043    o shortened offending lines in exch2_send_rx?.template
1044    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
1045    o genmake2: add build & execute test for NetCDF code
1046    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
1047      old grid files, moved CPP_EEMACROS.h to pkg/exch2
1048    o added useSingleCPUIO flag to monitor.F and mon_out.F
1049    o added temporary hack for sea-ice dynamics on the cube:
1050      metric terms are ignored and it is assumed that
1051      there is no sea-ice on cube faces 1, 2, 4, and 5.
1052    
1053    checkpoint52f_post
1054    o added exch2 cube routines to pkg/exch2
1055    o modified hs94.cs-32x32x5 to use it
1056    o added new grid files to hs94.cs-32x32x5
1057    checkpoint52f_pre
1058    
1059    checkpoint52e_post
1060    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
1061      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
1062    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
1063      to work with implicit vertical advection and AB ;
1064    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
1065    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
1066     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
1067    checkpoint52e_pre
1068    
1069    o fix bug in impldiff when Nr=1 or Nr=2.
1070    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
1071    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
1072    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
1073      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
1074    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
1075    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
1076    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
1077    
1078    checkpoint52d_post
1079    o re-tiled many expts to allow comparison in multi-processor mode
1080      - updated output accordingly
1081      - changed hs94.128x64x5 to use intial T from file rather than use the
1082        random number generator
1083    o add infrastructure in model routines for fizhi and gridalt packages
1084    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
1085    o changes to permit hi-res, cubed-sphere, configuration
1086      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
1087      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
1088      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
1089        of surface winds for the cube
1090      (A verification experiment, based on global_ocean.cs32x15, but with
1091       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
1092       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
1093       complete with example surface forcing files and matlab scripts to look
1094       at the output and compare it with that of global_ocean.cs32x15.)
1095    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
1096       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
1097       to conform to the common rule.
1098    o check-in the first version of the coupler + interfaces for multi-components
1099       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
1100       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
1101       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
1102       - ocean and atmos. share the same horizontal grid (no interpolation).
1103       - exchanges between component and coupler is done in forward_step
1104    o new verification experiment, cpl_aim+ocn:
1105       coupled ocean - AIM atmosphere on cs32 grid.
1106    
1107    checkpoint52d_pre
1108    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
1109    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
1110    
1111    checkpoint52c_post
1112    o Fixing OPTIONS files for use of exf:
1113      - ALLOW_ECCO not needed
1114      - ECCO_CPPOPTIONS.h should not be included from
1115        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
1116        as has been the case in the past
1117      - All cal/exf related options are currently set in
1118        single header file. Should remain so until we
1119        agree on a consistent new policy.
1120    o Removed all CPP options for cal package.
1121      cal has no more CPP options.
1122    o modified STOREs in GAD_ADVECTION
1123    o corrected key comp. for passkey
1124    
1125    checkpoint52b_post
1126    o new version: "thsice" of thermodynamic sea-ice pkg:
1127     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
1128     - modify fluxes but do not change theta directly;
1129     - light cleaning of bulk_force pkg (still needed with thsice).
1130     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
1131       + output_thsice.txt to test thsice & bulk_force pkgs.
1132    o put back grid & coriolis monitor output.
1133    checkpoint52b_pre
1134    
1135    o call "do_the_model_io" at the beginning (=> dump initial state)
1136    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
1137    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
1138      (need info on NUMBER_OF_PTRACERS)
1139    o missing PTRACERS headers in some routines
1140    o default tamc.h in pkg/autodiff supposed to crash
1141      to ensure proper customization
1142    
1143    checkpoint52a_post
1144    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
1145      - moved surfaceTendencyTice from pkg/seaice to main code
1146      - subroutine FREEZE_SURFACE now limits only surface temperature
1147        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
1148        => new output.txt for global_ocean.cs32x15 & global_with_exf
1149      - keep the old version of FREEZE for backward compatibility;
1150        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
1151      - corresponding modifs for TAF directives
1152    o added surface flux output variables to TIMEAVE_STATVARS
1153    o time-averaged output for pkg/ptracers
1154    o fix problem with ECCO-related divided adjoint
1155      snapshot file was missing some ad-variables,
1156      but no warning issued by TAF
1157    
1158    checkpoint52a_pre
1159    o some bug fixes for #undef REAL4_IS_SLOW
1160    
1161    checkpoint52 = ecco_c52_e35
1162    o after testing adjoints of checkpoint51u_post
1163    
1164    checkpoint51u_post
1165    o this is the post-merge tag of the ecco-branch
1166      (needs another clean checkout and re-testing)
1167    o various natl_box_adjoint configs and results
1168      but no input fields
1169    o obcs adjoint not yet merged!
1170    o adding ECCO global 1x1 and 2x2 degree configs
1171    o updated/extended some store directives for seaice
1172    o pkg/ecco now containes ecco-specific part of cost function
1173    o top level routines the_main_loop, forward_step
1174      supersede those in model/src/
1175      previous input data.cost now in data.ecco
1176      (new namelist ecco_cost_nml)
1177    o in ctrl/ cleaned some cross-dependencies and updated CPP options
1178    
1179    checkpoint51t_post
1180    o this is the pre-merge tag of the ecco-branch
1181    
1182    checkpoint51s_post
1183    o cleanup: removed various obsolete #define-s
1184    o pkg/grdchk
1185      - renamed 'ph-grd 3' to 'grad-res'
1186      - merged from ecco-branch
1187        (remaining bug fixes for obcs gradient checks)
1188      - additional high-precision output for testreport
1189        (grep for 'precision_grdchk_result')
1190    
1191    checkpoint51r_post
1192    o cleaned up or removed CPP_OPTIONS.h files
1193    o updated results for some of the tests to reflect the new
1194      optfiles (-ieee: -O0 instead of -O3)
1195    
1196    checkpoint51q_post
1197    o cd_code:
1198      - moved cd_scheme.F -> cd_code_scheme.F
1199      - separate read_checkpoint from cd_code_ini_vars.F
1200      - separated cd_code part from write_checkpoint
1201      - updated AD_SOURCE, generated .flow
1202      - added CD_CODE_VARS.h to the_main_loop
1203      - Moving cd_code specific store dir.s to pkg/cd_code
1204    o ctrl package totally restructured
1205      - pack/unpack now optional and decoupled from
1206        xx_/adxx_ I/O
1207      - ctrl_pack/unpack cleaned
1208        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
1209      - confined inclusion of AD_CONFIG.h to where necessary.
1210    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
1211    
1212    checkpoint51p_post
1213    o create initial cd_code package
1214      - WARNING: the initialization of fields within packages
1215        is broken because INI_FIELDS (where READ_CHECKPOINT is
1216        called) is called *before* PACKAGES_INIT_VARIABLES.
1217        This seems to be backwards since
1218        1) its important to initially zero the entire field including
1219           the "halo" region
1220        2) zeroing needs to be done *before* reading pickup info
1221           and the pickup call might or might not happen in any
1222           particular run
1223      - this needs an overhaul for R2
1224    o cleanup verification/*/code/GMREDI_OPTIONS.h
1225    o cleanup testreport
1226    
1227    checkpoint51o_post
1228    o bringing AD-related verif's up to date with genmake2
1229      - carbon/
1230      - global_ocean.90x40x15/
1231      - hs.94.1x64x5/
1232      - (front_relax/ )
1233    o (more) consistent directory structure for AD-related verif.'s
1234    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
1235    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
1236    o bug fix in find_alpha.F for MDJWF:
1237      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
1238        change rho -> rho-rhoConst
1239      - replace call find_rho to find_rhonum
1240    o initialisation of rFlx extended to full array (required by TAF)
1241      and shifted to thermodynamics
1242    o removed PTRACERS.h in ptracers routine
1243    o added surfacetendencyPtr to S/R parameter list pracers_forcing
1244    o Correcting initialisations for fVerU, fVerV.
1245    o helping TAF to recognize dependency on kUp for
1246      fVerU, fVerV
1247    o Replacing delZ by delR in pkg/ctrl/
1248    checkpoint51o_pre
1249    
1250    o undid all of cp51 pending some cleanups and discussion
1251    o added the [#include "AD_CONFIG.h"] statement to all files that need
1252       it for adjoint/tl #defines
1253     o re-worked the build logic in genmake2 to support AD_CONFIG.h
1254     o removed tools/genmake since it no longer works
1255    
1256    checkpoint51n_post
1257    o modifications to make FREEZE flux visible to pkg/kpp
1258      - moved surfaceTendencyTice from pkg/seaice to main code
1259      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
1260      - subroutine FREEZE now limits only surface temperature
1261        (this means new output.txt for global_ocean.90x40x15,
1262         global_ocean.cs32x15, and global_with_exf)
1263    o added surface flux output variables to TIMEAVE_STATVARS
1264    
1265    checkpoint51n_pre
1266    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
1267    o added [#include "AD_CONFIG.h"] to all files that use the following
1268      defines:
1269      - ALLOW_ADJOINT_RUN
1270      - ALLOW_TANGENTLINEAR_RUN
1271      - ALLOW_ECCO_OPTIMIZATION
1272    
1273    checkpoint51m_post
1274    o incorporating changes to get TAMC/TAF working in genmake2
1275      - added new TAMC/TAF targets to the Makefile
1276      - various cleanups related to package handling
1277      - these changes should have no impact on the forward model
1278    
1279    checkpoint51l_post
1280    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
1281     - faster algorithm for cal_addtime.F
1282     - higher precision arithmetic, where needed
1283     - pkg/exf *startdate variables changed from calendar date to
1284       model integration time
1285    
1286    checkpoint51l_pre
1287    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
1288    o enable to apply restoring on S & T only in a latitude band.
1289    o update output (external_forcing_surf modif. change truncation errors)
1290       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
1291    
1292    checkpoint51k_post
1293    o change default to: useNHMTerms=.FALSE.
1294     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
1295       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
1296     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
1297        exp1, ideal_2D_oce
1298     - change data file of oceanic exp (leave the results unchanged for now)
1299       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
1300    o set gravitySign automatically according to the vertical coordinate used
1301      (and change sign: back to "logical" value: +1 when R increases downward)
1302    o added an include barrier to the default CPP_OPTIONS.h and
1303      removed the #include "PACKAGES_CONFIG.h" from it
1304    o fix a bug in mom_fluxform (from chk51j_post)
1305    
1306    checkpoint51j_post
1307    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
1308    o adjusted some flow directives (dynamics, thermodynamics)
1309    o added cubed-sphere case to test cost function
1310    o heckpoint_lev?_directives.h now include
1311      pkg-specific directives, whenever those are enabled.
1312    o Moving pkg-specific flow directives to corresponding pkg
1313      Moving pkg-specific differentiation list to corresponding pkg
1314      Moving pkg-specific checkpoint-lev storing to corresponding pkg
1315      ---> conventions are
1316           - pkg_ad.flow
1317           - pkg_ad_diff.list
1318           - pkg_ad_check_lev?_dir.h
1319    
1320    checkpoint51i_post
1321    o merge of the branch-genmake2
1322      - knowingly breaks the older genmake
1323      - automatic generation of all ALLOW_${PKG_NAME} defines
1324      - new testreport supersedes older testscript
1325    o large number of package inclusion and header cleanups
1326    checkpoint51i_pre
1327    
1328    o new output for adjoin of global ocean vector invariant
1329    o fix for checkpoint of thermodynamic seaice and bulk_force
1330    o Steph gchem various cleanups
1331    
1332    checkpoint 51h_pre
1333    o fixed some single quotes
1334    o modify gchem pkg to be more versatile
1335    o modifications to clean up dic pkg
1336    o add pkg/cfc
1337    
1338    checkpoint51g_post
1339    o provide links for ARPACK and ADM*TLM
1340    o start removing verification/vero/
1341    o update AD-related stuff
1342      (in particular some IF-statements in model/src/ routines)
1343    o adding to verification/global_ocean.90x40x15/ adjoint of
1344      vector invariant setup
1345    
1346    checkpoint51f_post
1347    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
1348    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
1349      of tracer Green's fucntions for ocean inversion project.
1350    
1351    checkpoint51f_pre
1352    o Added on-the-fly spatial interpolation capability
1353        "USE_EXF_INTERPOLATION" to pkg/exf.
1354      - This is a temporary Cartesian-grid hack until
1355        the super-duper ESMF coupler becomes available.
1356      - See verification/global_with_exf/README for usage example.
1357      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
1358        flags and modified pkg/seaice accordingly.
1359    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
1360        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
1361        non-local transport term.
1362    
1363    checkpoint51e_post
1364    o pkg/mom_vecinv:
1365      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
1366      - add time-ave diagnostic of vorticity advection.
1367    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
1368    o atmospheric geopotential: - include water vapor effect;
1369                                - use p^kappa in p* scaling.
1370    o land pkg: read initial state from files.
1371    o AIM : add stratospheric drag in the upper level
1372    
1373    checkpoint51d_post
1374    o change function ILNBLNK (=> last non-blank char.) to return zero
1375      (instead of the string length) when the string. char is empty
1376    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
1377    o modif's to restore TAMC compatibility
1378      - avoid "_d" constructs in PARAMETER declarations
1379      - avoid interrupting lines by comment lines
1380    o Use cluster local disks for purely local I/O
1381      vs. globally visible disks needed for ctrl stuff
1382      (merged from ecco-branch)
1383      - new active_file_loc... and mdsio_..._loc routines
1384      - affected packages: autodiff, ctrl, grdchk, mdsio
1385    
1386    checkpoint51c_post
1387    o introducing integer flag debugLevel
1388      - debLevZero: suppress all output
1389      - debLevA: standard
1390      - debLevB: equivalent to current debugMode=.TRUE.
1391    o introducing pathname variable mdsioLocalDir for mdsio
1392      that can be specified at runtime
1393      (relevant for cluster I/O to local disk)
1394    `
1395    >>>checkpoint51b_post
1396    adjoint of ptracers
1397    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
1398    o extended state in checkpoint_lev?, etc.
1399    o alternative ctrl/cost with tr1 or ptracer
1400    o new comlev1_bibj_ptracers
1401    o new ptracers.flow
1402    o made ptracers_forcing same as external_forcing_s
1403    o added verification for adjoint with ptracers
1404      - adm. grdchk fail so far
1405      - tlm. grdchk OK
1406      - checked tapelev/comlev recomputations: OK
1407    <<<checkpoint51b_pre
1408    
1409    checkpoint51a_post
1410    o added code for biogeochemistry package
1411      - new pkgs: dic, gchem
1412      - new subroutine in ptracers
1413    o modify code for biogeo packages
1414      - in model/src and pkg/ptracers
1415    
1416    checkpoint51
1417    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
1418      - autodiff, ctrl, exf, grdchk, seaice
1419      kept separate packages
1420      - cost, ecco, obcs
1421    o updating verification/internal_wave, verification/lab_sea
1422      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
1423    
1424    checkpoint50i_post
1425    o Preparing next differentiable checkpoint and sync
1426      of MAIN vs. ecco-branch
1427      - 1st step: this one is differentiable
1428      - 2nd step: next(! not this) checkpoint will have updated packages
1429                  from ecco-branch)
1430    
1431    checkpoint50h_post
1432    o new package "land": provide surface BC for AIM.
1433    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
1434    o AIM: use true log-P extrapolation for near surface temp (= as in
1435        F.Molteni paper) ; update aim.5l_cs output.
1436    o New variable in PARM03 for more flexible pickups
1437    o somewhat cleaned package initialisation sequence for
1438      ctrl/ cost/ ecco/ in packages_... routines
1439    
1440    checkpoint50g_post
1441    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
1442      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
1443      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
1444        made the default because of faster convergence than ADI
1445    
1446    checkpoint50f_post
1447    o exf totally restructured
1448      - replaced all exf_set_ routines by one generic exf_set_gen.F
1449        and made sure it's still differentiable
1450      - split exf_getffields.F into new exf_bulkformulae.F
1451      - exf_inscal_/exf_outscal_ suffixes consistent with field names
1452      - updated adjoint/makefile and relevant verif. accordingly
1453    
1454    checkpoint50f_pre
1455     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
1456          + change Evap over land. (update aim.5l_cs output)
1457     o added missing .cvsignores and made uniform across expts
1458     o changed configuration of tidal_basin_2d expt
1459     o added pkg/debug functions for tracing code in fatal crashes
1460     o tidied pkg/monitor to use MONITOR_OPTIONS.h
1461     o new fn in pkg/monitor to stop model if solution grows too big
1462     o removed lots of single quotes from comments
1463    
1464    checkpoint50e_post
1465    o make KPP work with PTRACERS
1466     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
1467       nearly a copy of kpp_transport_s
1468     - there is no analogue to SurfaceTendencyS, so I have to use
1469       gPtr(of the surface layer) instead
1470    o add a new platform SunFire+mpi (SunFire 15000) to genmake
1471    checkpoint50e_pre
1472    
1473    checkpoint50d_post
1474    o change kpp output from multiple-record state files to single-record state
1475      files analogous to write_state.F
1476    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
1477      analogous to the cg2d-related output.
1478    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
1479      so that writing to internal file fn (with length 512) fails.
1480    checkpoint50d_pre
1481    
1482    checkpoint50c_post
1483    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
1484    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
1485    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
1486    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
1487    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
1488    
1489    checkpoint50c_pre
1490    Merging from release1_p13:
1491    o bug fix for pkg/seaice dynamic solver
1492    o Added SEAICE_initialHEFF to pkg/seaice
1493    
1494    checkpoint50b_post
1495    o store u*,v* in gU,V instead of in guNm1,gvNm1
1496    o in order to put the momForcing out of the Adams-Bashforth:
1497      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
1498      to timestep.F
1499    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
1500    o re-generate output for highly sensitive test-exp:
1501       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
1502    
1503    checkpoint50b_pre
1504    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
1505    o corrected CPP option mismatch in exf_Bulk... functions for case
1506      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
1507    
1508    checkpoint50a_post
1509    o Bug fix for merging between c50 and KPP.
1510      ikey was passed from thermodynamics to kpp_calc via
1511      common block rather than being recomputed in kpp_calc,
1512      in contradiction with new key itdkey.
1513      New key ikppkey created, and tamc.h headers updated.
1514    
1515    checkpoint50
1516    - 2nd step of merge with ecco-branch:
1517      merge changes in ecco-branch back into main trunk
1518    - bug fix in find_alpha
1519    - more storing in gmredi_calc_tensor.F, kpp_routines.F
1520    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
1521    - merged some sliced AD support routines
1522    
1523    checkpoint49
1524    merged from ecco-branch:
1525    o exf:
1526      - Enable initialisation of forcing fields to constant
1527        (runtime) values.
1528      - in exf_getffields.F
1529        Reduce i-/j-loop to interior domain, discarding overlaps.
1530        That also fixes wrong TAF-key computations for key_1, key_2
1531        with bulf formulae.
1532      - exf_init.F modify #ifdef for exf_init_evap
1533      - exf_getffieldrec.F, ctrl_getrec.F
1534        The following INT-usages are not safe:
1535          fldsecs  = int(fldsecs/fldperiod)*fldperiod
1536          fldcount = int(fldsecs/fldperiod) + 1
1537        and were modified.
1538    o autodiff: checkpoint_lev...
1539      - updated storing for bulk formulae (some arrays were missing)
1540      - added state for seaice package
1541      - synchronized with main branch
1542    o DIVA:
1543      Modif.s in
1544      - the_main_loop.F
1545      - the_model_main.F
1546      and added cost_final_restore.F cost_final_store.F
1547      o With these changes, it is possible to fully separate
1548        the first forward run to compute the cost function (mdthe_main_loop)
1549        and adjoint runs over individual DIVA intervals (adthe_main_loop)
1550        into separate model executions.
1551        This enables better tuning of DIVA to given queue sizes.
1552      o Loss of cost function value in consecutive DIVA runs is
1553        fixed by storing to 'costfinal' file.
1554      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
1555        beginning/end of adjoint integration is accounted for.
1556      The current changes apply to TAF-1.4.26.
1557      TAF has one remaining bug, requiring one manual change
1558      (see MITgcm manual).
1559    o cal: synchronized between MAIN and ecco-branch
1560    
1561    checkpoint48i_post
1562    o Changes to restore differentiability of code w.r.t. previous tag
1563      (mostly adding new routines to make list and replacing
1564      pressure by totPhiHyd).
1565    o Updated and merged grdchk package
1566      - has both ADM and TLM checks
1567      - works for single- and multi-proc.
1568      - output cleaned
1569      - worked successfully for parallel DIVA
1570    o genmake:
1571      - Adding -platform=SP4
1572      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
1573    o Modif. for DIVA:
1574      ctrl_unpack should not be called in intermediate DIVA interval.
1575      (similar thing would apply for active files such as
1576      tbar, sbar, psbar, which should not be reinitialised;
1577      only relevant for ecco-branch)
1578    
1579    checkpoint48h_post
1580    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
1581    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
1582    o Added SEAICE_initialHEFF to pkg/seaice
1583    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
1584    
1585    checkpoint48g_post
1586    --- EOS:
1587    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
1588      store total Potential in totPhyHyd for diagnostics & EOS.
1589    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
1590    --- Pressure/geopotential gradient:
1591    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
1592    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
1593      ( changes results of global_ocean_pressure )
1594    o NLFS + z-coord.: add eta*Rho' contribution.
1595    o accurate phiHyd when using interface-W at the middle between 2 centers
1596     ( changes results of ideal_2D_oce )
1597    o includes r* 2nd term in potential gradient.
1598    
1599    checkpoint48f_post
1600    Merging from release1_p12:
1601    o Modifications for using pkg/exf with pkg/seaice
1602      - improved description of the various forcing configurations
1603      - added basic radiation bulk formulae to pkg/exf
1604      - units/sign fix for evap computation in exf_getffields.F
1605      - updated verification/global_with_exf/results/output.txt
1606    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
1607      (SBO) core products, including oceanic mass, center-of-mass,
1608      angular, and bottom pressure (see pkg/sbo/README.sbo).
1609    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
1610      to avoid negative values in shallow regions.
1611      - updated verification/natl_box/results/output.txt
1612      - updated verification/lab_sea/results/output.txt
1613    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
1614    o Added useSingleCpuIO option (see PARAMS.h).
1615    o Updated useSingleCpuIO option in mdsio_writefield.F to
1616      work with multi-field files, e.g., for single-file pickup.
1617    o pkg/seaice:
1618      - bug fix in growth.F: QNET for no shortwave case
1619      - added HeffFile for specifying initial sea-ice thickness
1620      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
1621    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
1622      kpp_transport_t.F, forward_step.F, and the_main_loop.F
1623    o pkg/seaice:
1624      - adjoint-friendly modifications
1625      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
1626    
1627    checkpoint48e_post
1628    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
1629    o dynamics: change definition of computational domain & adapt mom_fluxform
1630      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
1631    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
1632        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
1633        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
1634        global_ocean.90x40x15 global_with_exf global_ocean_pressure
1635        inverted_barometer solid-body.cs-32x32x1
1636      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
1637    
1638    checkpoint48d_post
1639    o in preparation for r*:
1640     a) use pre-computed gradient of hydrostatic potential:
1641        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
1642     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
1643        => affects results of glob_oce_pressure (different truncation error)  
1644      update output.txt of ideal_2D_oce & global_ocean_pressure
1645    
1646    checkpoint48d_pre
1647    o in preparation for r*:
1648      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
1649      pass the 2 comp. of the grad. as arguments to momentum S/R.
1650      but for the moment, only used if it does not change the results.
1651    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
1652    
1653    checkpoint48c_post
1654    Modifications in treatment of initial flux forcing controls
1655    to avoid extra storing of flux fields.
1656    
1657    checkpoint48c_pre
1658    o Added tidal_basin_2d experiment (currently 1D!)
1659    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
1660    
1661    checkpoint48b_post
1662    o r* coordinate added in #ifdef NONLIN_FRSURF block.
1663     (modification to pressure gradient not yet implemented)
1664    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
1665      (for U & V) that are used for vertical advection of momentum.
1666    
1667    checkpoint48a_post
1668    o In preparation for r*, use temp. array to compute vertical transport
1669       in flux-form momentum pkg. => change results of few test-exp.
1670      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
1671                        lab_sea, natl_box & plume_on_slope
1672    
1673    checkpoint48
1674    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
1675    
1676    checkpoint47j_post
1677    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
1678    o moved adexch from forward_step to addummy_in_stepping
1679    o added exch in ctrl_map_...
1680    o aveFreq.=0. at end of cost_final to avoid overwrite in
1681      reverse checkpointing loop
1682    o Yet more changes in gmredi:
1683      * adgmredi_calc_tensor
1684        avoiding all recomputation of gmredi_slope_limit
1685      * adgmredi_x/y/rtransport
1686        added flag for excessive storing to avoid recomp. of
1687        u/v/rtans, dTdx/y/z
1688        -> this is not really necessary and very memory-consuming
1689      * adgmredi_slope_psi:
1690        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
1691      * gmredi_slope_limit
1692        re-activated full calculation of taperfct for case 'ac02'
1693    o updating verification/ adjoints of carbon, global_ocean.90x40x15
1694    
1695    checkpoint47i_post
1696    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
1697    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
1698      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
1699    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
1700    o gmredi: fix few bugs.
1701    
1702    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
1703    This will be a good checkpoint to plug into the ecco-branch.
1704    o few modif.'s to get latest version adjointed
1705      (mainly kick out code in ini_linear_phisurf)
1706    o modif's to run adjoint with exactConserv
1707    o case GM_BOLUS_ADVEC should be cleaned
1708      S/R gmredi_slope_psi should be cleaned
1709    o verification/carbon now has exactConserv=.TRUE.
1710    
1711    checkpoint47g_post
1712    o time-average AIM output: becomes independent from statvars time-average
1713      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
1714    o After TAF bug fix:
1715      Tested adjoint of gmredi package.
1716      Tests were done with checkpoint47 rather than with latest
1717      checkpoint47f_post since the latter is broken for the adjoint
1718      verification/carbon/ contains both ADM and TLM gradient checks.
1719    Here they are, before they get changed/lost/stolen.
1720    Mostly modif.'s to fix numerical sensitivities.
1721    Gradient checks OK for
1722    - GM_taper_scheme:
1723      * clipping
1724      * ac02
1725      * linear
1726      * glw91
1727      * dm95
1728      * ldd97
1729    - GMREDI_OPTIONS:
1730      * GM_VISBECK_VARIABLE_K
1731      * GM_NON_UNITY_DIAGONAL
1732      * GM_EXTRA_DIAGONAL
1733      * GM_BOLUS_ADVEC
1734    in conjunction with data.gmredi parameters to be checked in
1735    in a few minutes under verification/carbon/code/
1736    
1737    checkpoint47f_post
1738    Merging from release1_p10:
1739    o modifications for using pkg/exf with pkg/seaice
1740      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
1741        and SEAICE_EXTERNAL_FLUXES
1742      - pkg/exf CPP options EXF_READ_EVAP and
1743        EXF_NO_BULK_COMPUTATIONS
1744      - usage examples are Experiments 8 and 9 in
1745        verification/lab_sea/README
1746      - verification/lab_sea default experiment now uses
1747        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
1748    
1749    checkpoint47e_post
1750    o created a tag prior to creating a branch
1751    
1752    checkpoint47d_post
1753    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
1754      at the bottom boundary had an erroneous half slip boundary condition
1755    o added bottom drag and no slip boundary condition capabilities to
1756      oceanic pressure coordinates code
1757    o added new verification experiment global_ocean_pressure, this experiment is
1758      also described in the tutorial section of the manual
1759    checkpoint47d_pre
1760    
1761    checkpoint47c_post
1762    o Added a verification experiment for a global cubed-sphere ocean run
1763      -  verification/global_ocean.cubed32x32x30
1764      -  uses pkg/therm_seaice and pkg/bulk_forcing
1765    
1766    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
1767    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
1768      when using P-coordinate; only implemented for atmospheric config.
1769    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
1770      NOTES: requires option NONLIN_FRSURF to be "#define".
1771    o update advect_xz/results/output.txt (left from checkpoint44g_post)
1772    
1773    checkpoint47b_post
1774    Merging from release1_p9:
1775    o pkg/seaice
1776      - removed GOTO's and added taf directives
1777      - double precision constants to reduce the g77 (Linux)
1778        to F77 (SGI) differences reported in release1_p8
1779    o tools/genmake
1780      - added SGI options
1781    o verification/testscript
1782      - updated to that of checkpoint47a_post
1783    o verification/global_ocean.90x40x15/input/eedata
1784      - modified for SGI f77 compatibility
1785    o verification/lab_sea
1786      - added description of sea-ice model
1787      - added missing matlab routines
1788      - added test of thermodynamics parallelization
1789    
1790    checkpoint47a_post
1791    o new pkg: aim_v23
1792     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
1793       for now, keep the same surface forcing as before.
1794     - Part-Cell implemented into AIM; check that Heat & Water are conserved
1795     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
1796     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
1797    o add diagnostic of surface correction term in monitor output
1798    
1799    o bulk_force and therm_seaice
1800    - Two packages:  bulk_force (Bulk forcing)
1801      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
1802    - Earlier integration from Stephaine Dutkiewicz
1803      and Patrick Heimbach.
1804    - Two ifdef statements for compile time,
1805       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
1806    
1807    checkpoint47
1808    differentiable version of checkpoint46n_post
1809    o bug fix in quasihydrostaticterms
1810    o * "clean" adjoint code (in terms of extensive recomputations)
1811        can now be obtained for all GMREDI options (i.e. for
1812        - GM_VISBECK_VARIABLE_K
1813        - GM_NON_UNITY_DIAGONAL
1814        - GM_EXTRA_DIAGONAL
1815        - GM_BOLUS_ADVEC )
1816      * However, wrong gradient check problem remains unsolved.
1817      * New CPP options have been introduced for different
1818        tapering schemes
1819    o external_fields_load now part of differentiation list
1820    o pressure needs multiple storing;
1821      would be nice to have store_pressure at beginning or
1822      end of forward_step, e.g. by having phiHyd global (5-dim.)
1823      (NB: pressure is needed for certain cases in find_rho,
1824      which is also invoked through convective_adjustment).
1825    o recomputations in find_rho for cases
1826     'JMD95'/'UNESCO' or 'MDJWF' are OK.
1827    o #define ATMOSPHERIC_LOADING should be differentiable
1828    o ini_forcing shifted to begining of initialise_varia
1829    o Incorporating QNVS line search routines into MITgcm
1830      (this is separate code, and therefore not under pkg)
1831      lsopt/, optim/
1832    o Updated verification/carbon/
1833      - #define GM_VISBECK_VARIABLE_K
1834      - GM_taper_scheme    = 'ldd97'    
1835    
1836    checkpoint46n_post
1837    Merging from release1_p8:
1838    o verification/natl_box:
1839      updating new external_fields_load routine
1840    o New package: pkg/seaice
1841      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
1842      The sea-ice code is based on Hibler (1979-1980).
1843      Two sea-ice dynamic solvers, ADI and LSR, are included.
1844      In addition to computing prognostic sea-ice variables and diagnosing
1845      the forcing/external data fields that drive the ocean model,
1846      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
1847      The implied surface heat flux is then stored in variable
1848      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
1849      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
1850      non-local transport term.  Because this call precedes model
1851      thermodynamics, temperature under sea-ice may not be "exactly" at
1852      the freezing point by the time theta is dumped or time-averaged.
1853      N.B.: fairly large differences in accuracy occur across
1854            different platforms/compilers; comparison between
1855            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
1856            generated output gives:
1857       T           S           U           V
1858      C D M    c        m  s        m  s        m  s        m  s
1859      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
1860      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
1861      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
1862    
1863      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
1864    o GAD:
1865      - generated new common blocks to account for call of
1866        same gad routines with differing traceridentities
1867        (needed to modify tracerIdentity indices in GAD.h)
1868      - generated separate common blocks for case useCubedSphereExchange
1869        (Department of Futurology)
1870      - parameter lists to gmredi_?transport: added tracerIdentity
1871      - added new key indices to tamc.h
1872    o external_fields_load:
1873      - added this routine to TAF list
1874      - needed to make some common blocks global and additional storing
1875        along the same lines as exf package (checkpoint_lev?_directives.h)
1876    o exf:
1877      updated external forcing package
1878      - bug fixes carried over from ecco-branch
1879        (missing OBCS_OPTIONS.h in two routines)
1880      - enable easy to use "no forcing".
1881      - added exf I/O for atmospheric loading
1882      - added exf I/O for runoff data
1883      - transfered scaling between exf <-> MITgcm to exf namelist
1884    o Adding new verification experiment global_with_exf.
1885      This verification experiment is almost identical to the
1886      global_ocean.90x40x15 experiment, except that it uses
1887      the exf (and cal) package instead of the
1888      external_fields_load routine (cf README file).
1889    
1890    checkpoint46m_post
1891    o modified testscript to return -- when there are no lines of "%MON" output
1892    o added new flag "quasiHydrostatic" for QH mode
1893      and new routine quasihydrostaticterms()
1894    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
1895      New routine: mom_u_coriolis_nh()
1896    o fixed sign of non-hydrostatic metric terms in u and v equations.
1897      Depend on correct sign of gravitySign.
1898    o added work.pc* to .cvsignore in aim directories using ifc
1899    o introduced flag for controllin non-hydrostatic metric terms
1900    o removed gravitySign from PARM04
1901    o switched to g77/ifc from pgf77 in aim experiments
1902    
1903    checkpoint46l_post
1904    o made convective adjustment work with pressure coordinates:
1905     - changed the direction of k-loop in convective_adjustment.F for the
1906       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
1907     - adjusted the reference pressure k-index in convective_adjustment.F
1908     - adjusted the convection condition in convect.F (in analogy to
1909       calc_ivdc.F)
1910     - convective_adjustment no longer computes anything on the halos
1911     - removed the warnings about negative salinity from find_rho.F and
1912       find_alpha.F; instead the new routine look_for_neg_salinity, called
1913       at the beginning of find_rho, find_alpha, and find_beta, does a
1914       check of the entire slice, if CPP-option
1915       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
1916    checkpoint46l_pre
1917    
1918    checkpoint46k_post
1919    o fixed the verification/global_ocean.90x40x15 experiment:
1920     - new bathymetry (the world according to A., JMC, and M.)
1921     - new initial fields and forcing fields (*.bin files)
1922     - new POLY3.COEFFS (for the next release one should switch to a full
1923       equation of state: JMD95P or MDJWF)
1924     - fixed several errors and redundancies in the data file
1925     - experiment uses looped cells
1926     - added matlab directory with diagnostic scripts for plotting of output
1927    
1928    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
1929     - read AIM physics parameters from a file (data.aimphys)
1930     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
1931    
1932    checkpoint46j_post
1933    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
1934    o move wVel computation at the end of the time step, in S/R integr_continuity
1935    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
1936    o update timeave pkg for wVel diagnostic.
1937    checkpoint46j_pre
1938    
1939    checkpoint46i_post
1940    o Clean up AIM package (and keep the results unchanged):
1941      include CPP_OPTION and use IMPLICT NONE in all routines ;
1942      declare all the variables _RL ; use _d 0 for all numerical constants.
1943      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
1944    
1945    checkpoint46h_post
1946    o cleaned up the use of rhoNil and rhoConst.
1947      - rhoNil should only appear in the LINEAR equation of state, everywhere
1948        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
1949        and the dynamical equations are all divided by rhoConst
1950    o introduced new parameter rhoConstFresh, a reference density of fresh
1951      water, to remove the fresh water flux's dependence on rhoNil. The default
1952      value is 999.8 kg/m^3
1953    o cleanup up external_forcing.F and external_forcing_surf.F
1954      - can now be used by both OCEANIC and OCEANICP
1955    checkpoint46h_pre
1956    
1957     Added code to convert surface volume flux (fresh water) into
1958     a mass flux when using P coordinates in the ocean (OCEANICP).
1959     Note: It assumes you have set rho0=rhoConst=density of fresh water.
1960    
1961    checkpoint46g_post
1962    o Include a new diagnostic variable phiHydLow for the ocean model
1963      - in z-coordinates, it is the bottom pressure anomaly
1964      - in p-coordinates, it is the sea surface elevation
1965      - in both cases, these variable have global drift, reflecting the mass
1966        drift in z-coordinates and the volume drift in p-coordinates
1967      - included time averaging for phiHydLow, be aware of the drift!
1968    o depth-dependent computation of Bo_surf for pressure coordinates
1969      in the ocean (buoyancyRelation='OCEANICP')
1970      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
1971        Theta, Salinity, and Pressure in the parameter list. This routine is
1972        presently contained in find_rho.F. This routine does not give the
1973        correct density for 'POLY3', which would be a z-dependent reference
1974        density.
1975    o cleaned up find_rho
1976      - removed obsolete 'eqn' from the parameter list.
1977    o added two new verification experiments: gop and goz
1978      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
1979    checkpoint46g_pre
1980    
1981    checkpoint46f_post
1982    o Enable tangent linear (forward mode) gradient checks:
1983      - extended active file handling to g_... files
1984      - added TANGENT_SIMULATION to theSimulationMode
1985      - extended grdchk package accordingly
1986    o added tangent linear setup in verification/carbon/code_ftl
1987    o added adjoint setup in verification/front_relax/code_ad
1988    
1989    checkpoint46e_post
1990    o Added new equation of state -> MDJWF
1991      - EOS of McDougall et al., 2002, JAOT, submitted
1992      - caveat: the equation of state is only valid for a smaller (more
1993        realistic?) range of values than JMD95P/Z and UNESCO
1994      - added masks to the calculation of pressure in store_pressure
1995      - added more check values for density in check_eos (ini_eos.F), some of
1996        the old check values are out of the range of the MDJWF-eos, so don't
1997        expect perfect matches for those
1998    checkpoint46e_pre
1999    
2000    checkpoint46d_post
2001    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
2002      'OCEANICP', also initialised field pressure correctly in ini_eos in the
2003      case of pressure coordinates. eosType='JMD95Z' in
2004      combination with buoyancyRelation='OCEANICP' now causes an error.
2005    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
2006      in find_alpha/beta.
2007    checkpoint46d_pre
2008    
2009    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
2010      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
2011    
2012    checkpoint46c_post
2013    o Changes necessary for ocean in p-coordinates
2014     -  Added new buoyancy relation = 'OCEANICP'
2015     -  Added new parameters = gravitySign (this used to be contained inside
2016        the factor dRdZ which I added when we first switched to R coordinates).
2017     X GM/Redi is not compatible (yet)
2018     X bottom drag and no-slip need to be debugged.
2019    checkpoint46c_pre
2020    
2021    checkpoint46b_post
2022    o Added new equation of state -> JMD95Z and JMD95P
2023      - EOS of Jackett and McDougall, 1995, JAOT
2024      - moved all EOS parameters into EOS.h
2025      - new routines ini_eos.F, store_pressure.F
2026    o Added UNESCO EOS, but not recommended because it requires
2027      in-situ temperature (see JMD95)
2028    o Modified formatting for knudsen2.f in utils/knudsen2 and added
2029      unesco.f to be used with POLY3
2030    checkpoint46b_pre
2031    
2032    checkpoint46a_post
2033    o Added (atmospheric) pressure loading
2034      - new field in FFIELDS.h, etc...
2035      - new cpp flag ATMOSPHERIC_LOADING
2036    o Changed hFacC to _hFacC in calc_phi_hyd.F
2037    o Added SHORTWAVE_HEATING to some files for consistency
2038    checkpoint46a_pre
2039    
2040    checkpoint46
2041    further merges from release1_p5
2042    o new ctrl package
2043      - adopted from ECCO environment to enable optimization
2044      - added Eliassen Palm fluxes to controls
2045    o added Eliassen Palm flux controls to gradient check package
2046    o cost package
2047      - Compatible with new ctrl package
2048      - added Eliassen Palm cost hooks
2049      - modif's of existing cost functions
2050    o Adjoint-related bug fixes in kpp:
2051      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
2052      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
2053    o autodiff package
2054      - flow directives:
2055        + new for S/R do_the_model_io
2056        + enhanced for S/R checkpoint
2057        + new gmredi.flow
2058      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
2059        disable adcommon.h/g_common.h by default.
2060      - fixed problem for adjoint of global_max
2061    o modified verification/carbon/
2062    o New setup for adjoint of global_ocean
2063    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
2064    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
2065    o incorporated hooks for sponge layer code (external_forcing.F)
2066    
2067    checkpoint45d_post
2068    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
2069    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
2070      (affects plume_on_slope "cg2d" output)
2071    o add new parameter deltaTfreesurf for free-surface time stepping
2072    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
2073    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
2074    o change phiMin in exp1 (to agree with documentation)
2075    o add new flags:
2076     - T,S forcing inside/outside Adams-Bashforth
2077     - turn off temp,salt advection and/or forcing
2078     - for each tracer, define internal flag for multiDimAdvection & A-B
2079    o monitor: change definition of KE to check conservation of Energy
2080    
2081    checkpoint45c_post
2082    o Removed f90 comments ("!")
2083    o Modified initialisations to enable exf package for MITgcm
2084      (without invoking ECCO_PACKAGE).
2085    o modifications to gradient check package (Martin Losch)
2086      - enable centered differences
2087      - modified format of standard output
2088    
2089    checkpoint45b_post
2090    o cleaned exchange calls in cg2d
2091    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
2092    o included CPP option SINGLE_LAYER_MODE in thermodynamics
2093      to configure barotropic setup (Martin Losch)
2094    o moved some initialisations within bi,bj loop in dynamics
2095      (TAF flow dependency)
2096    o in initialise_varia, moved call packages_init_variables
2097      before convective_adjustment_init
2098      (corresponding adjustment of TAF tape initialisation).
2099    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
2100    
2101    checkpoint45a_post
2102    o compute Rho over the whole domain (extend iMin,jMin indices)
2103    o specific exchange for X-slice domain (case Ny=1)
2104    o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
2105    o solve_for_pressure : set cg2d_x to zero where OBCS are applied
2106    
2107    checkpoint44h_post = checkpoint45
2108    o Fix to restore differentiability:
2109      place at which packages_init_variables is called in
2110      initialise_varia is crucial for reverse control flow.
2111    o modifications in GMRedi to enable stable adjoint
2112      (corresponding modif's in thermodynamics, dynamics)
2113    o added missing hook for sponge layer code in external_forcing
2114    o modified test cost functions
2115    o storing in gad_advection (plus removal of write(0,*)!
2116    o missing headers TR1.h added in convective_adjustment routines
2117    o errorMessageUnit set non-equal zero in eeboot
2118      (conflict on some platforms, e.g. IBM SP3)
2119    o modified carbon verif.
2120    
2121    checkpoint44h_pre
2122    o vertical grid option: allow to put the Interface at the middle between
2123      2 cell-centers ; replace delZ in pkg/kpp by drF.
2124    o GM Advective form: Tracers are advected using the residual transport (=
2125      Euler+GM-bolus); set param GM_AdvSeparate=T to return to previous form.
2126    
2127    checkpoint44g_post
2128    o fix surface correction term in multiDimAdvection (affects plume_on_slope
2129      results) ; ifdef missing in thermodynamics.F
2130    
2131    checkpoint44f_pre,checkpoint44f_post
2132    o added PTRACERS package
2133      This allows an arbitrary number of passive tracers to be integrated
2134      forward simultaneously with the dynamicaly model.
2135      + Implemented so far:
2136        - basic forward algorithm (time-stepping, advection, diffusion, convection)
2137        - I/O and checkpointing
2138        - GM/Redi  *but*  using the GM/Redi coefficient of Salt
2139      + Not implemented so far:
2140        - KPP
2141        - OBCS
2142      + No specific example supplied (yet) but global_ocean.90x40x15 has the
2143        necessary data.ptracer file. Simply use -enable=ptracers and uncomment
2144        line in data.pkg.
2145      + This package is disabled by default since it increases storage.
2146    
2147    
2148    o testscript: added -cleanup option
2149    o Shap_filt: a) new shap_filt S/R to use no-slip BC with S2 filter
2150                 b) enable to filter 2D fields.
2151    
2152    checkpoint44e_pre,post
2153    o re-wrote convective adjustment to use pre-calculated weights
2154      Affects: model/src/convective_adjustment.F, convective_adjustment_ini.F
2155      Adds:    model/src/convective_weights.F, convectively_mixtracer.F
2156      Original calls to convect() still in place.
2157    
2158    chkpt44d_pre,post
2159    o added missing EXCLUDE_MONITOR flags
2160    o changed "e" to "_d" in gmredi_slope_limit, gmredi_slope_psi
2161      (incompatible typ in MIN/MAX expressions caused problems
2162      on IBM SP3)
2163    o in genmake added variable MAKEDEPEND
2164      plus resetting for case SunOS
2165    o added timer_stats.c routine for IBM SP3
2166    o removed variables in dynamics
2167    !!! I forgot to create tag chkpt44d_pre !!!
2168    !!! But chkpt44d_pre = chkpt44c_post    !!!
2169    
2170    o real fresh water flux implemented with non-linear free-surface.
2171    
2172    chkpt44c_pre,post
2173    o few fix (mask in shap_s2, EmPmR in external_field_load,
2174      USE_NATURAL_BCS in solve_for_P);
2175    o add arguments myIter & myTime to S/R obcs_calc & solve_for_P
2176    
2177    checkpoint44b_pre/_post
2178    o merge of relevant stuff from the ecco-branch:
2179      - genmake: removed $S64 overwrite for case SunOS
2180      - pkg/exf: update and corrections for field swapping and obcs
2181      - pkg/ecco: parameter lists for the_model_main, the_main_loop
2182                  harmonized between ECCO and MITgcm
2183      - pkg/autodiff: added flow directives for obcs, mdsio_gl_slice
2184                      updated checkpointing_lev... lists for obcs
2185      - model/src: minor changes in forward_step, plot_field
2186                   added directive for divided adjoint in the_main_loop
2187      - pkg/mdsio: added mdsio_gl_slice
2188    
2189    o check parameters & config (chkpt44a_pre,post)
2190    o OBC and NonLin_FrSurf.
2191    
2192    checkpoint44
2193    o fix bug in mom_vi_del2uv
2194    o select when filters are applied ; add options to zonal_filter (data.zonfilt)
2195    o gmredi: fix Pb in the adiabatic form ; add options (.e.g. Bolus advection)
2196    o update AIM experiments (NCEP input files)
2197    o improve and extend diagnostics (Monitor, TimeAve with NonLin-FrSurf)
2198    o added some stuff for AD
2199    
2200    checkpoint43
2201    o added two new advection tests
2202    o added global 4x4 degree ocean test
2203    o added test of H&S94 with free surface on cube
2204    o some final mods for gradient check, adjoint,...
2205    
2206    checkpoint42
2207      Fixed AD-related problems:
2208    o Store directives up-to-date with re-arranged Adams-Bashforth
2209      (mainly thermodynamics.F)
2210    o New store directives for multi-dim. advection schemes
2211      * new CPP flag ALLOW_MULTI_DIM_ADVECTION
2212      * new common block and key passkey
2213      (mainly gad_advection.F)
2214    o Modified store directives for split of dynamics/thermodynamics
2215      for the case ALLOW_KPP
2216    o Cleaned argument list for timestep_tracer.F
2217    
2218    checkpoint41
2219    o re-formatted/added comments in prologues of key subroutines
2220      to work with protex
2221    
2222    checkpoint40
2223    o moved calc_gs, calc_gt and calc_tr1 back to model/src
2224    o added FLT (floats) package from Arne along with demo. experiment
2225    o re-arranged Adams-Bashforth scheme for tracers to allow easier
2226      implementation of forward-in-time forcing terms
2227    o more mods for non-linear free-surface including new variable
2228    o modified multi-dim method to work on cube
2229    o bug fix in KPP (from DM)
2230    
2231    checkpoint40pre9
2232    o added DST advection schemes
2233    o fix MPI bug on SGI's
2234    o modifications for non-linear free-surface
2235    o fixed conditionals for fixed flow/passive tracer only mode
2236    o added tension/strain form of stress tensor
2237    o changes to commenting of arguments for TAF/TAMC
2238    o added/updated many matlab scripts
2239    o added multi-dimensional advection method for tracers
2240      
2241    checkpoint40pre8
2242    o new package rw/
2243      Added method for dumping intermediate local arrays:
2244      mdsio_writetile - same as mdsio_writefield except works from inside
2245                        bi,bj loop
2246      mdsio_writelocal - same as mdsio_writetile except works for local
2247                         arrays
2248      write_local_r? - higher-level wrapper for mdsio_writelocal
2249      Controlled by diagFreq. Defaults to zero (ie. no dumps)
2250      Example given at end of mom_vecinv.F that dumps some local arrays.
2251    o replaced calc_mom_rhs.F by mom_fluxform.F/mom_vecinc.F to
2252      control flux-form versus vector invariant code.
2253      Switch is runtime flag vectorInvariantMomentum (defaults to false)
2254      or genmake -DISABLE ...
2255    o TAMC-related update to cope with mom_fluxform.F/mom_vecinc.F
2256      (additional storing is now needed for case vecinv;
2257      currently nothing implemented to switch this storing off
2258      in case fluxform is used since no CPP flag available).
2259    
2260    checkpoint40pre7
2261    o bug fix in dynamics.F
2262      calc_viscosity called before k=1,Nr loop.
2263    o added some #ifdef's ALLOW_PASSIVE_TRACER
2264    o cleaned initialisations in ctrl_map_ini
2265      related to TAF
2266    
2267    checkpoint40pre6
2268    o split dynamics into thermodynamics & dynamics
2269    o corresponding split of calc_diffusivity into
2270      calc_diffusivity, calc_viscosity
2271      (kpp_calc_diff, kpp_calc_visc).
2272    o Added diffkr, kapgm to control variables
2273    o bug fix in gmredi_slope_limit for ldd97
2274    
2275    checkpoint40pre5
2276    o proper initialization of Adams-Bashforth time stepping
2277      + uses forward step for very first step of model (iter=0)
2278    o re-generated *all* output since almost all output is modified by this
2279      change (sorry but we've been putting this one off for about 2 years)
2280      + natl_box, aim.5l_Equatorial_Channel and aim.5l_zon-ave were
2281        *not* regenerated since they are already out of date and I don't
2282        want to create the impression that they are suddenly working.
2283    o removed KAP stuff for DEC's
2284    o modified/added many .cvsignore files in */code and */input
2285    o added new expt "solid-body.cs-32x32x1"
2286      + this uses an alternative form of ini_curvilinear_grid.F which
2287        is not necessarily any better than the current one...
2288    
2289    checkpoint40pre4
2290    o added re-initialisations of utrans,vtrans,rtrans in
2291      calc_common_factors which are crucial for TAF.
2292    o extended iMin,jMin range for calc_common_factors,
2293      calc_diffusivity
2294    o added option ALLOW_PASSIVE_TRACER
2295    o a few minor updates and fixes
2296    
2297    checkpoint40pre3
2298    o created calc_gtr1.F for gad package
2299    o split the_main_loop and re-introduced forward_step
2300    o some recomputations of nIter0 for TAMC
2301    
2302    checkpoint40pre2
2303    o Updated to latest branch of AJA, JMC
2304    o Added gradient check package
2305    o Added routines for passive tracer handling
2306    o Added carbon sequestration sensitivity experiment
2307    
2308    checkpoint39
2309     o Modifications and fixes to support TAMC
2310       (mainly missing or wrong directives)
2311     o Corrected common blocks when fooling TAMC to produce adjoint I/O
2312       in addummy_in_stepping
2313     o Updated verification/vero/ (bug fixes in code/, correct pickups in input/)
2314     o Enabled "sliced" (xz-,yz-) exchanges, needed for obcs.
2315     o Included following packages:
2316       cal: calendar
2317       exf: external forcing
2318       ecco: essential routines to control use of cal, exf
2319             (NB: this is not the full ECCO environment)
2320     o disabled some packages by default in genmake
2321    
2322    checkpoint38
2323     o see notes_c37_adj.txt
2324     o corrected wrong layer index in external_forcing_t
2325     o replaced the_main_loop/forward_step by the_main_loop
2326     o removed forceoutput from write_state
2327       (replaced criteria for initial/final state)
2328     o added runtime flag for pre-C35 pickups: usePickupBeforeC35
2329    
2330    checkpoint37
2331     o mdsio.F routine split and packaged in pkg/mdsio
2332       (mdsio.F and mdsio_gl.F still exist in eesupp/src but are not
2333        used unless genmake -disable=mdsio)
2334     o allow a more precise surface-geopotential gradient for the atmosphere
2335       taking into account the change in space of Alpha (=1/rho) at the surface.
2336     o variable "etaN" (replace cg2d_x) is the surface R-anomaly [r unit]
2337       (ocean: sea surface height [m] / atmos: surface pressure anomaly [Pa])
2338     o Change units: Phi_Hydrostatic (=phiHyd), Phi_Surface(=cg2d_x) and
2339       Phi_NonHydrostatic (=cg3d_x), all have now the dimension of a potential
2340       [m2/s2] (pressure/rhoConst in the ocean ; Geo-Potential in the atmosphere).
2341     o Time-Average diagnostics defined as a pseudo package "timeave".
2342     o pickup files : old pickup (before c35) did not work with new code (c35
2343       and after) unless activating 2 commented lines in initialise-varia.
2344     o Non-Hydrostatic pickup file Pb fixed.
2345     o bug with Rigid-lid version (since c35) fixed.  
2346    
2347    checkpoint36
2348     o implement Crank-Nickelson barotropic time-stepping
2349     o recover Time-Average diagnostics
2350     o fix Pb in checkpoint (PR#19)
2351     o AIM become a standard package ; clean unused CPP_kees
2352    
2353    checkpoint35
2354     o subtantial rewrite of dynamics.f
2355     o allows staggered time-stepping
2356     o packaged obcs, aim (Atmospheric Physics), zonal_filt, shap_filt
2357     o added bottom drag (linear + quadratic)
2358    
2359    checkpoint34
2360     o Modified exchange routines for correct reverse simulation.
2361     o Added verification output to comply with bug fix in impldiff.F
2362       as of c33 (exp2, natl_box).
2363     o Corrected store directives in dynamics.F
2364     o Corrected array boundaries in impldiff.F
2365     o Corrected array dimensions in gmredi.
2366       Added temporary scalars to avoid storage by TAMC (gmredi, kpp).
2367     o Added routine GLOBAL_SUM_INT to global_sum.F
2368     o Added mdsio_gl.F for ECCO purposes.
2369    
2370    checkpoint33
2371     o Fixed bug in lower BC in impldiff.F
2372     o Fixed confusion about units of forcing arrays in FFIELDS.h
2373       namely Fu,Fv,Qnet,Qsw,EmPmR:
2374       - Removed verification/natl_box/code/external_fields_scale.F
2375         (did not differ from that in model/src)
2376       - Changed units of fu,fv,Qnet,Qsw,EmPmR back to proper units
2377         (see FFIELDS.h for description)
2378       - Scale fu,fv,Qnet,Qsw,EmPmR when used in external_forcing_surf.F,
2379         kpp_calc.F and kpp_transport_t.F
2380       - Removed model/src/external_fields_scale.F and calls to it
2381       - verification/natl_box uses flux data with "atmospheric" sign so
2382         a special version of external_fields_load.F is used to
2383         change the data as it's read in. This way, the arrays
2384         have the right units and signs at all times tha a user could
2385         possibly use them.
2386     o Corrected genmake to delete a temporary file during configuration
2387    
2388    checkpoint32
2389     o Scaling of forcing fields moved from external_forcing.F to
2390       external_fields_scale.F, called directly after loading fields.
2391     o Surface relaxation terms added to surface tendency fields in
2392       extra subroutine.
2393     o impldiff.F changed to avoid storing by TAMC of huge intermediate
2394       fields.
2395     o Changes in GMRedi to comply with packaging structure.
2396     o Modifications and bug fixes in KPP package.
2397     o Verification experiment for KPP added (verification/nat_box/)
2398    
2399    checkpoint31
2400     o Packages interface brought in line with defined standard
2401       -> new routines packages_...F
2402       -> changes in initialise_fixed.F, initialise_varia.F
2403       -> enables initialisation interface for ECCO package
2404     o Rescaling of external forcing fields immediately after read
2405       (removed from external_forcing.F)
2406       -> new: surface_fields_scale.F
2407       -> affects ini_foorcing.F, external_fields_load.F
2408     o Computation of surface tendencies before tendency updates.
2409       -> new: external_forcing_surf.F
2410     o Change of variable names useGMRedi, useKPP, useECCO
2411     o Further changes in dynamics.F, impldiff.F for TAMC
2412     o Tested for experiments 0, 2, 4.
2413       - not yet tested for GMRedi.
2414       - not yet tested for KPP.
2415    
2416    checkpoint30
2417     o Updates for OBCs
2418     o New experiment for test OBCs (internal_wave)
2419     o New output.txt in verification/exp4/results/
2420     o Updates for KPP: calculation of viscosity corrected, new variables
2421       kpp_dumpFreq and kpp_taveFreq
2422     o CPP'd calls to system routines for TARGET_CRAY_VECTOR (P.H.)
2423       and entry for T90 in genmake
2424    
2425    checkpoint29
2426     o packaged KPP and GM/Redi
2427    
2428    checkpoint28
2429     o Corrected initialization of hFacMin for difference vertical coordinates
2430     o Modified calculation of partial cell thickness to more robust algorithm
2431     o config_summary.F: replaced write_1D_... by write_0D_...
2432       read_write.F: added subroutines write_0D_...
2433     o routines calc_common_factors, calc_gs, calc_gt, calc_phi_hyd, find_rho:
2434       included some initialisations required for TAMC.
2435     o routine calc_isoslopes: modified sqrt computation to make it
2436       differentiable for zero argument.
2437     o routines dynamics, impldiff:
2438       included store directives and tape key computations required for TAMC.
2439     o ALL TAMC related changes are between ifdef ALLOW_AUTODIFF_TAMC
2440    
2441    checkpoint27
2442     o fixed calc_isoslopes() to so that cancellation of terms in tensor
2443       formulation works properly with variable resolution.
2444     o restructured the calling tree between the_model_main() and dynamics()
2445     o split initialise() into initialise_fixed() and initialise_varia()
2446     o introduced initialization file pSurfInitFile for free surface (cg2d_x)
2447       in new routine ini_psurf()
2448    
2449    checkpoint26
2450     o moved some #ifdef in optional routines to encompass everything
2451       except the argument declarations. This was using up some memory.
2452     o fixed macros like _ADT to work with both versions of Linux cpp
2453     o cleaned up some unused and uninitialized variables
2454       (helps when debugging with strict compile options)
2455     o split up CPP_EEOPTIONS.h into options and macros
2456       (macros are now in eesupp/inc/CPP_EEMACROS.h)
2457     o patch for 2 processor JAM mode
2458    
2459    checkpoint25
2460     o updates for OBCs and NH
2461     o dramatically reduced memory usage
2462     o added "JAM" routines for use on Artic network
2463     o parameterization of convection by implicit vertical diffusion
2464     o added a diagnostic of convective index
2465     o moved call to calc_divg_hat() from dynamics() to solve_for_pressure()
2466       (this is was partly for OBCs and NH but also in anticipation of
2467        an explicit free-surface option)
2468     o initial state input files for U and V
2469    
2470    checkpoint24
2471     o Removed some spurious "REAL"s
2472     o Updated KPP to latest version from JPL
2473     o Added a COS(latitude) in horizontal viscosity
2474    
2475    checkpoint23
2476     o Added del^4 diffusion for salt and temperature
2477     o Multiple minor fixes (implicit none's, arguments to global_sum, etc.)
2478    
2479    checkpoint22
2480     o Made many small changes: implicit none, format(i5), etc...
2481     o Introduced KPP mixing scheme (compiles and runs but *not* tested)
2482    
2483    checkpoint21
2484     o Introduced new I/O package that supports direct-access records (mdsio.F)
2485     o Split-up mid-level I/O routines
2486     o Updated input data for experiments 0,1,2,4 and 5
2487     o Finally removed the genmake.* scripts (everyone seems happy with genmake)
2488    
2489    checkpoint20
2490     o Tidied up open-boundaries some more
2491     o Added non-hydrostatic code
2492     o Fixed some input data
2493     o Modified MPI start-up to work in "coupled" context.
2494    
2495    checkpoint19
2496     o Tidied up directory structure for verification experiments.
2497     o Added new code for open boundaries.
2498     o Corrected advective terms near boundaries.
2499     o Added CPP flag for "old UV" geometry and corrected spherical geometry.
2500     o Implemented free-slip/no-slip BCs and del^4 dissipation.
2501     o Split default parameters out of ini_parms.F into set_defaults.F.
2502    
2503    checkpoint18
2504     o Further changes for optional code generation with
2505       CPP - ugh!
2506    
2507    checkpoint17
2508     o Beginning to incorporating modularity
2509       for supporting atmos. and ocean configs.
2510     o Small changes for TAMC complinace
2511     o New ultra simple test case. Barotropic box
2512       configuration "exp0".
2513    
2514    checkpoint16
2515     o Minor changes to exchange routines to support
2516       accumulation in reverse mode. Adjoint of an
2517       assignment is an addition.
2518     o Changes to support compilation by TAMC (LR(1)
2519       syntax) and by g77 under Linux ( 72 character
2520       limit ).
2521    
2522    checkpoint15
2523     Rewrote exchange routines to allow
2524     o General tile <-> tile connectivity.
2525     o TAMC reverse mode flag ( is this really needed? )
2526     o Variable width overlap and exchange region widths.
2527     o Hooks for sharing data via DMA, Arctic, Memory Channel,
2528       shmput/shmget, VIA, SYSV shmem and every other cool
2529       communication method.
2530    
2531    checkpoint14
2532     Consistent isomorphism chages made. These allow dynamical core
2533     to support both pressure and meters as a vertical coordinate.
2534    
2535    checkpoint13
2536     Release which corrects global_max problem and a couple
2537     of KGM time-averaging diagnostic errors. Also contains
2538     a double-gyre experiment setup as well as the baseline
2539     4 degree global template. The double gyre template is
2540     organised to allow it to be applied automatically to
2541     the baseline configuration.
2542    
2543    branch-point-rdot
2544     A few tidy-ups have been made bt the real point of this
2545     check-point (excuse the pun) is to allow a branch to be
2546     made for the purposes of adding the rDot alterations.
2547     I don't want to commit the rDot to the main-trunk until
2548     we've actually tested it...
2549    
2550    checkpoint12
2551     Tidy up and added generic genmake script (formerly
2552     configure script).
2553     Released to testers.
2554    
2555    checkpoint11
2556     Re-arranged initialise() and introduced ini_vertical_grid()
2557     and ini_masks_etc().
2558    
2559    checkpoint10
2560     Introduced the configure script.
2561     Separated out the diags package.
2562     Added template for writing time-averages of tile/intermediate quantities.
2563     Updated SIZE.h in exp2 and made the data big-endian.
2564    
2565    checkpoint9
2566     MPI fix. Filename changes (meta/data). salbin*y stuff.
2567     General tidy-up.
2568     SST.bin SSS.bin added to verification/exp2
2569    
2570    checkpoint8
2571     Inludes time-dependant forcing and time-averaging.
2572     Works at 4x4 and 2.8125x2.8125 global
2573    
2574    checkpoint7-4degree-ref
2575     Branch from checkpoint7. Released for application to
2576     global modeling and general modeling - process studies, regional
2577     model etc..
2578     Configured for verification/exp2 - 4 degree global, two process.
2579    
2580    checkpoint7
2581     Created by cnh
2582     Simple 4 degree global simulation
2583     configuration.
2584     Includes climatological wind,
2585     hydrography, bathymetry etc
2586     Does not include Heat Flux and E-P
2587    
2588    checkpoint6
2589     Created by cnh
2590     merged checkpoint5 with CD and
2591     spherical polar code.
2592     Still some problems with GM Redi
2593     abd full topography.
2594    
2595    checkpoint5
2596     Created by AJA
2597     contains updates to GM Redi
2598     and reordered timestepping loop
2599     for Implicit Diffusion.
2600    
2601  checkpoint4  checkpoint4
2602   Created by cnh   Created by cnh
2603   Contains memory saving macros ( _rdxc etc..) for when   Contains memory saving macros ( _rdxc etc..) for when

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