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revision 1.75 by jmc, Thu Jun 20 23:52:03 2002 UTC revision 1.584 by stephd, Tue Dec 6 17:57:40 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 add new offset feature to offline pkg (plus minor cleanup)
8    o cfc fixes for final year of integration
9    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
10      be in GCHEM_OPTIONS).
11    
12    checkpoint57x_post
13    o fix testreport Pb in multiple test experiment.
14    o cleanup our namelist syntax in verification:
15      - make it more F95 standards compliant (some work still needed)
16      - allows the vast majority of our tests to work with gfortran
17    o Non-Hydrostatic:
18     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
19     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
20    o Allow to apply AB on T,S rather than on AB(gT,gS):
21     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
22     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
23       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
24     - need a "clever" read_pickup to restart from the other AB formulation
25    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
26    o remove some unused variables (reduces number of compiler warnings)
27    o adjoint
28      * Disable useVariableViscosity for adjoint for time being
29        (there are a number of extensive recomputations)
30      * Initialize certain variables needed for adjoint
31    
32    checkpoint57w_post
33    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
34                 fix the singleCpuIO RS version of MDSWRITEFIELD
35       and add a WARNING if using globalFiles=T with multi-processors.
36    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
37      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
38    o tracer advection scheme:
39      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
40       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
41       was not very convenient).
42      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
43       (further tests needed for the implicit DST & Flux-Limiter schemes).
44    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
45      and sRef for convenience, handy, when you want to initialize
46      ptracers in a large domain with a constant non-zero value. Also,
47      untangle ptracers_init.F a little.
48    
49    checkpoint57v_post
50    o change dome exp. to use variable viscosity in side-drag terms.
51    o remove all the files from the cfc_offline test since they are now
52      incorporated into tutorial_cfc_offline which has been producing
53      identical results for a few days of testing
54    o add new parameter: sideDragFactor to enable half-slip-side BC
55      and change side-drag S/R to use viscosity from mom_calc_visc
56      (can switch back by setting sideDragFactor=0.); affects results at
57      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
58       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
59    o vorticity & strain are now computed without masking, to account for
60      no-slip-side BC in variable viscosity calculation ; mask is applied
61      anyway later on, before computing advection/coriolis terms.
62    o modify exp4 to test new obcs support for reading from external files
63      and for passive tracers
64    o fix behavior of ptracers_monitor when monitor output is written to a
65      netcdf-file; still not independent of monitor.F (writes in the same
66      file).
67    o change default value of tRef (put a uniform, meaningful value for ocean
68      & atmos) and initialize sRef (was missing, as Martin mentioned).
69    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
70      to be proportional to enstrophy dissipation length.  Thus,
71       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
72      This is now consistent with Smagorinsky and with the manual.
73    
74    checkpoint57u_post
75    o OBCS and PTRACERS: add open boundary support for passive tracers
76      - either use homogenous (pseudo) v.Neumann conditions or prescribe
77        OB-values from file; this is not different from the way theta and salinity
78        are treated
79      - however, Orlanski-radiation conditions are not supported, and the model
80        will stop if you use pTracers and Orlanski at the same time.
81      - beefed up the rountine obcs_external_fields_load: now only those open
82        boundary values are overwritten with values from files for which there
83        are really files, otherwise the OB-fields remain untouched. This makes
84        it possible to use different OBs at different ends of the domain (as
85        with EXF)
86    o reduce number of exch calls in shap_filt (s2).
87    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
88      truncation level) 4/5 MLAdjust test results (11&12 digits match).
89    
90    checkpoint57t_post
91    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
92    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
93      same truncation, independent of the face number: affects affects several
94      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
95    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
96      note that biharmonic viscosity + no-slip was not tested in any experiment.
97    o fix bug in non-linear free-surf side-drag ; generate new output for
98      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
99    o make mnc honor the writeBinaryPrec flag for most kinds of output
100    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
101    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
102      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
103    o add brackets in multi-terms sum to get same truncation, independent of
104      the face number (manage to get exactly same value of gU,gV at the cs-edge)
105      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
106    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
107      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
108      a maximum grid-scale Reynolds number.  Also, changes all length calculations
109      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
110      Suggested values of viscosity parameters found in mom_calc_visc.
111      Many new viscosity diagnostics available.
112    
113    checkpoint57s_post
114    o Add clearing-house for viscosity calculations, mom_calc_visc and
115      correct numerous bugs in LeithD and Smagorinsky discretizations.  
116      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
117      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
118      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
119      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
120      The Strain-Tension form is now called with useStrainTensonVisc=.true.
121      ViscAhStrain and viscAhTension are now retired.
122    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
123    o In response to JMC's bug report, genmake2 now ignores any soft-links
124      that it finds in the *current* directory when searching for files.
125      Soft-links found in any other source directories will still work as
126      they did before.
127    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
128      a C routine to unlimit the stack size
129    o mnc-ify pkg/aim snapshot vars
130    o mnc-ify pkg/land as requested by Daniel
131    o various changes to mnc including:
132      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
133      - output can now be grouped so that all files within a group
134          change the ITER portion of their names in lock-step together
135      - can now read ("global") PER-FACE (in addition to PER-TILE) files
136          and works with both EXCH1 and EXCH2 (but needs more testing)
137      - writing works for all verification test cases w/ g77 on Linux
138    
139    checkpoint57r_post
140    o make MNC variable initialization happen earlier
141    o add diagnostics for (almost) each term of the momentum Eq.
142    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
143    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
144    o remove MINIMAL_TAVE_OUTPUT option ;
145      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
146    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
147      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
148    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
149    o add time-dependent SST, SSS control
150    o cost terms in ecco/ modularized (new cost_generic.F)
151    o cost_averages routines are modularized (new cost_averagesgeneric.F)
152    o new infrastructure for seaice model vs. obs misfits in seaice/
153      * driver from the_main_loop.F is seaice_cost_driver.F
154      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
155      * gradient check in Exp. 6a of natl_box_adjoint/
156    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
157      (see README file)
158    
159    checkpoint57q_post
160    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
161    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
162      - bug was reported by Jean-Michel and Ian Fenty
163    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
164      update exp. cpl_aim+ocn output.
165    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
166      Needed for high-res. runs with large global files
167      to be able to limit tapelev size
168    o Changed some tests for adjoint:
169      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
170      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
171      * global_ocean.90x40x15/ back to default 3-level checkpointing
172    o Modifications to enable scripted COMMON to MODULE conversion
173      * verification/OpenAD/code/ has necessary scripts and description;
174      * converts, compiles and runs successfully;
175    
176    checkpoint57p_post
177    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
178    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
179      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
180    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
181    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
182      (was already the case for dissipation with mom_vecinv,
183       and also the case for grad.PhiHyd when staggered-timeStep)
184      This will allow to put dissipation out-off the AB time-stepping.
185     Unfortunately, affects truncation error. Update output of exp. that "fails"
186      (cg2d matching number) and leave the others for later: front_relax(10),
187      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
188      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
189    
190    checkpoint57o_post
191    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
192      (2) its ready to be documented during the 20050801 DocFest
193    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
194      for ideal_2D_oce and lab_sea on linux_ia32_g77
195    o set to #undef CTRL_SET_OLD_MAXCVARS_30
196      in global1x1_tot/code_seaice_adj to access indices 32, 33
197      (worth another tag)
198    
199    checkpoint57n_post
200    o adding precip control xx_precip 32
201    o adding swflux control xx_swflux 33
202    o Replacing 10 forcing penalty cost routines by 1 generic.
203    o Implementing partitioning in time-mean and variable adjustment
204      for atmos. state.
205    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
206    o in natl_box_adjoint:
207      * updated exp 1 to 10
208        (but does not have time-mean vs. variable split results yet)
209    o updated global1x1/*_seaice_adj/
210      to incorporate latest changes
211    o enable useSingleCpuIO for mdsio vector routines
212      (applies in particular to tapelev I/O)
213    o removed inefficient K-loop in all active_file*control*.F
214    
215    checkpoint57m_post
216    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
217      and advect_cs (use EXCH-2 and standard cs-32 grid files).
218    o pkg/exch2: filling of face-corner halo regions is optional
219      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
220    
221    checkpoint57l_post
222     tag before updating tutorials (pre-release-2)
223    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
224       for output and interpolation of input fields onto model grid)
225    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
226       Affects results of exp. rotating_tank ; update output.txt.
227    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
228          and taking the square quantity and/or using a fraction-weight field.
229    o fix aim_diagnostics_init.F mate numbers.
230    o add mnc output capability to diagnostics/diagstat and update
231      our cvsignore files for the ACSII output generated
232    
233    checkpoint57k_post
234    o lab_sea now uses diagnostics package and provides a suite of
235      new EXF diagnostics output.
236    
237    checkpoint57j_post
238    o exf
239      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
240        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
241        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
242      * extended diagnostics output
243        - now includes all EXF variables
244        - hs, hl moved to common block
245        - separate S/R for diagnostics, called after ctrl vector is added
246        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
247        - EXFqnet contains true Qnet (i.e. includes qsw)
248      * updated verif. lab_sea, global_with_exf
249      * Rearranging hflux (exf_mapfields -> exf_getforcing)
250        to ensure that diagnostics sees a true EXFqnet
251    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
252    o diagnostics pkg: change pointers so that 1 diagnostic can be used
253      several times with different frequencies.
254    o mnc-ify the thsice package as requested by Daniel Enderton
255      - the monitor--MNC output needs work
256      - many attributes need to be added (most are currently blank)
257    o mnc-ify theaim_v23 package as requested by Daniel Enderton
258      - many attributes need to be added (most are currently blank)
259    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
260    o add Sadourny like discretization to the 4th.O vorticity advection scheme
261    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
262      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
263         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
264    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
265     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
266    
267    checkpoint57i_post
268    o Diagnostics package was changed: diagnostic allocation is now deactivated
269      by setting an empty file name in the namelist (used to be by setting 0 frequency)
270    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
271      add 1rst Order upwind vertical Shear.
272    o add a quick fix for A/B checkpointing in OFFLINE mode
273    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
274      end-run around the C/Fortran linking horror in eesup/src/timers.F
275    o added pkg/runclock: allows user to terminate run based on wall clock
276    o added non-hydrostatic scaling parameter: nh_am2
277    o pkg/my82: futile attempt to make results compiler-independent by adding
278      some "_d 0", etc. no effect.
279    o for mnc output, fill the 'T' coordinate var with myTime and create a
280      separate 'iter' variable for iteration count
281    o pkg/diagnostics:
282      add new capability: output of Global/Regional & per-level statistics ;
283      tested against monitor output (including land & thSIce) on various exp.
284    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
285    
286    checkpoint57h_done
287      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
288      data.diagnostics, data.gchem, data.ptracers) is done.
289    
290    o pkg/diagnostics: prepare for Global/Regional statistics.
291      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
292    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
293      and rename it: DIFFERENT_MULTIPLE
294    
295    checkpoint57h_post
296    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
297    o pkg/diagnostics: change output frequency, now in seconds (instead
298      of Nb of iterations). This requires to change data.diagnostics.
299    checkpoint57h_pre
300    
301    o in mnc, let the user create the output dir if both mnc_outdir_date
302      and mnc_outdir_num are false
303    o add fflags() to pkg/diagnostics which allows one to specify, on a
304      per-file basis, the file precision [default behavior is unchanged]
305    o added diagnostics to pkg/kpp, including computation of mixed layer
306      depth based on a temperature/density criterion
307    o updated verification/natl_box to test the new pkg/kpp diagnostics
308    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
309    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
310    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
311      not mnc -- this mistake was found by JMC and is now corrected
312    
313    checkpoint57g_post
314    o add Adams-Bashforth 3rd Order time stepping:
315      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
316      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
317    checkpoint57g_pre
318    
319    o make lambda[Theta,Salt]ClimRelax spatially varying
320      (default remains spatially uniform constant based on tau)
321    o added new control variables
322      * init. uVel, vVel, etanN
323      * lambda[Theta,Salt]ClimRelax
324    o separate masks used for ctrl_pack/unpack 'from write_grid' output
325      (suggested by G. Forget)
326    
327    checkpoint57f_post
328    o add parameter "baseTime" = model base time = time at iteration zero
329      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
330      account for baseTime shift
331    o move Coriolis arrays from PARAMS.h to GRID.h
332    checkpoint57f_pre
333    
334    o mnc-ifying the seaice package
335    o introduced an alternative length scale calculation for use in the limiting
336      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
337    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
338    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
339      as well as grad(vort3).  Made it compatible with both approximate form
340      for the cubed sphere and full form of these gradients.  Added flag
341      useFullLeith to select between approximate and full form.  
342    o add "d0" in getcon.F to reduce differences between compilers/platforms
343      update output.txt of exp. fizhi-gridalt-hs
344    o change port_rand funtion to allow to set the seed.
345    o fix obscure MNC bug involving conversion between reals and integers
346      - it caused no problems with certain (eg. gcc, ifc) compilers but the
347        new version is now more standards-compliant
348    o adjoint-related modifications
349      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
350      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
351      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
352    
353    checkpoint57e_post
354    o Adding eddy stress controls a la Ferreira et al.
355    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
356    
357    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
358      update output.txt of exp. fizhi-gridalt-hs
359    o add more "Z" dimensions and associated coordinate vars to MNC
360    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
361    o parameter calendarDumps: when set, approximate months (30-31 days) and years
362      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
363      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
364      months and years.  Requires pkg/cal.
365    o diagnostics: add pickup functionality
366      - off by default for backwards compatibility
367      - current version only uses MDSIO -- MNC will be added
368    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
369    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
370    
371    checkpoint57d_post
372    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
373    o modify verification/ideal_2D_oce so that it tests the creation of mnc
374      output from the diagnostics package
375    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
376    o make genmake2 more portable by using ".$FS" instead of ".f" for more
377      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
378    o add coordinate variables to the MNC output from the diagnostics package
379    o change MNC-flags default value: true when useMNC=TRUE
380    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
381      the ability (off by default) to read the grid information using MNC
382    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
383    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
384    o do snap-shot diagnostics at the middle of the time-interval (instead of
385      at the end).
386    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
387      new test for AIM with thSIce + slab-ocean
388    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
389    o move state variable diagnostics to the beginning of the time step ;
390      (note: still needs some work specially for snap-shot diagnostics)
391      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
392    
393    checkpoint57c_post
394    o Change testing option (-ieee) to get closer agreement between g77 & ifort
395    o generate new output.txt files on faulks with g77 & the new -ieee option
396    checkpoint57c_pre
397    
398    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
399      update output.txt of exp. global_ocean.90x40x15
400    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
401      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
402    o add saltFlux(+File) forcing capability with periodicExternalForcing
403    o allow to use pkg diagnostics for GM-Redi & ThSIce output
404    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
405    o improvements for the MNC output from DIAGNOSTICS:
406      - correct handling of the unlimitied dimension
407      - all dims now have associated coordinate variables
408      - variables located at U, V, and Corner ("Z") points are now written
409        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
410        *all* data points are output
411    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
412    o added pkg/seaice/seaice_monitor.F
413    o mdsio_readfield.F can now read files visible only to master MPI process.
414    o pkg/seaice: some test code for ice-modified ocean stress
415    o exf_getffields interpolation defaults to bilinear for all scalar forcing
416      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
417      spurious negative numbers for precipitation and humidity.  Will cause
418      some small numerical differences for integrations using pkg/exf/exf_interp.F.
419    o pkg/ctrl/
420      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
421        May be enabled via doPackDiag
422      *  introduce z-scaling of
423         + gradient (doZscalePack) and
424         + control (doZscaleUnpack)
425    o pkg/mdsio/
426      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
427      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
428    
429    checkpoint57b_post
430    o simplify options in diagnostics_fill arguments (remove weird combinations)
431    o fix MNC coordinate variables so that they now contain per-face index
432      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
433      general, EXCH2 grids are only aligned to a "local" coordinate system
434    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
435    o Implement instantaneous output within pkg diagnostics:
436      setting a negative frequency in data.diagnostics produces
437     "snap-shot" output (as opposed to time-average if freq > 0)
438    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
439      NOTE: change ptracer diagnostics name: use 2 characters to work with
440            more than 9 tracers. Add also diagnostics of advect & diffus flux.
441    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
442      becomes the coordinate variable for the 'T' dimension
443    o add CF-style coordinate variables to MNC
444      - just a first cut:  numbers are meaningless on the cubesphere and
445        missing along the T axis but otherwise it works!
446    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
447    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
448    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
449      this is based directly on what the model compute, so that the content of
450      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
451    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
452    o clean up build options files for SunOS, in particular
453      - remove -traditional from xmakedepend
454      - change -xarch=v9 to -xarch=native for f77
455      - restore use of make (not gmake)
456      - add CC=gcc if using g77
457    o changes per discussion of AM, JMC, & EH3 today:
458      - move redundant "grid" variables out of "state" -- in preparation of
459        creating proper CF-style coordinate variables and in recognition
460        that any/all grid variables can be easily copied (eg. w/NCO) from
461        the grid files into any of the other NetCDF files
462      - *always* output grid variables with MDSIO (this will eventually be
463        changed)
464      - output MNC grid file if useMNC is true
465    o every instance of _END_MASTER() has been found and replaced with
466      _END_MASTER( myThid ) in order to satisfy certain picky Sun
467      preprocessors
468    o re-arrange diagnostics pkg initialisation:
469     - allow each package to extend the available diagnostics list
470     - add some checking and fix small problems (multi-threaded, ...)
471     - new S/R diagnostics_fill (replace fill_diagnostics):
472       look through the short list of active diag. (instead of the long list)
473       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
474    
475    checkpoint57a_post
476    o this set of changes restores TAMC compatibility
477      tested for global_ocean.90x40x15 adjoint on trough
478      (what a pain)
479    
480    checkpoint57a_pre
481    o some modifs in tools/build_options for sunos
482    o call ctrl_pack for ctrl at end for optimcycle=0
483    
484    checkpoint57
485    o add horizontal bi-harmonic viscosity for vertical velocity
486      - new parameter viscA4W (defaults to viscA4)
487      - affects only non-hydrostatic code
488      - to be done: no-slip lateral boundary conditions
489    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
490    o implement Implicit Vertical advection for pTracers
491    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
492      (implemented also for implicit vertical diffusion & advection)
493    o OBCS: extend application of tracer open boundary conditions
494      to a strip beyond the boundary of width Olx/Oly
495    o add call monitor to TAF set of required calls (flow directives)
496      and include in natl_box_adjoint
497    o untangle a few ifdefs related to cost, ctrl, autodiff
498      untangel a few ALLOW_ECCO_OPTIMIZATION
499    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
500      (theta2, salt2 in ecco_cost_weights)
501    
502    checkpoint56c_post
503    o OBCS as control variables
504      - update ctrl_ad_diff.list, obcs_ad_diff.list
505      - remove balance of obcs controls from default
506      - fix index bug nobcs in ctrl_init
507      - fix dummy fields filen in ctrl_pack
508      - add dummy weights for obcs
509    o lsopt: comment out fort.94 output
510    o optim:
511      - remove unnecessary header files
512      - adjusted namelists
513      - add xerbla.F to Makefile
514    o exf:
515      - multiple modifications of exf_check_range
516      - unit change in exf_init_runoff from [m/year] to [m/s]
517    o mdsio:
518      - i/o-vector change debugLevel from debLevA to debLevB
519    
520    checkpoint56b_post
521    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
522      is called from DO_THE_MODEL_IO
523      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
524      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
525      - clean up PTRACERS_WRITE_TIMEAVE a little
526    o add another verification experiment that tests both the cfc-pkg and
527      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
528      reactive tendencies treated inline with regular timestepping
529    o testreport previously did a lousy job of comparing small numbers, so
530      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
531      implemented in the little c-progam tmp_cmpnum.c which is embedded in
532      testreport.
533    o ptracers_monitor: bug fix for MPI
534    
535    checkpoint56a_post
536    o GCHEM: finish reorganizating the package
537      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
538        (introduces another 3D-array for each passive tracer, but only if
539        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
540        gchemTendency is not needed because the timestep is done separately)
541      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
542      - GCHEM is now---more or less cleanly---separate from PTRACERS
543      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
544        so clear to me how that should be done in a general way.
545    o CFC: improve formatting of output in CFC_ATMOS
546    o PTRACERS:
547      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
548        that ALL experiments with ptracers enable can be checked. This makes
549        GCHEM_MONITOR obsolete.
550      - include a runtime parameter PTRACERS_monitorFreq that defaults to
551        monitorFreq
552      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
553    o add PTRACERS (PTR0[1-5]) to testreport output
554    o exf_check_range:
555      * default changed to .TRUE.
556      * will check values for niter0 if debLevA, every timestep if debLevB
557      * STOP in exf_check_range if 'out of range'
558      * range chosen generous to allow for potential extema
559      TBD: a version with stricter range
560           permitted range would be runtime parameters
561    o GMredi:
562      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
563      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
564      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
565    o GCHEM:
566      - move call to GCHEM_FORCING_SEP, so that it is now called before
567        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
568      - introduced a useGCHEM runtime flag and applied it everywhere.
569      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
570        this flag is now only visible within GCHEM-pkg routines.
571      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
572        be replaced by a 3D array that is computed before thermodynamics; for
573        this, the tracer ID iTracer had to be included into the parameter list
574        of ptracers_forcing
575      - set up forward_step to call gchem_forcing, that will replace
576        gchem_forcing_int in ptracers_forcing
577      - cleaning up
578    o small cleaning of exch2: remove files that are also in eesupp/src
579    
580    checkpoint56
581    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
582    o mnc: cleanup "full" files--fixes out-of-memory problem
583    o ECCO-GODAE
584      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
585      * fully merged and updated from SIO code
586        windstress sign change affects
587        - exf_inscal_[u/v]stress
588        - sign of xx_tau[u/v] adjustments
589        - signs in cost_scat
590      * ctrl_get_gen: avoid update of tau[u/v] for first few days
591      * natl_box_adjoint updated and compressed
592      * 2-level checkpoint switch added
593        (tested in EXP. 1 of natl_box_adjoint)
594      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
595    o SVD
596      * first complete, non-hacked version for SVD calculations
597      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
598        performed via direct access files admtlm_vector.it????
599        (via ctrl_[un]pack)
600      * optimcycle is used for ARPACK iteration counter
601        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
602      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
603        and add linear transforms where necessary
604      * controls are initial/final SST, SSS (can be extended; need to check
605        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
606    o mdsio: filename info to both stderr, stdout
607    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
608      from sign change
609    
610    checkpoint55j_post
611    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
612      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
613    o add consistent build directories and .cvsignore files to verification
614    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
615    o make all subroutines 30 or less characters in length for certain older
616      compilers to work (a thorough search only turns up two routines in
617      pkg/ptracers)
618    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
619      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
620    
621    checkpoint55i_post
622    o change arrays for total vertical diffusivity (2.D if explicit,
623      3.D if implicit) ; each ptracer uses its own background value.
624    o added mnc/NetCDF output capability to ocn_compon_interf
625      - added bits to verification/cpl_aim+ocn so that it can run on
626        ITRDA and other clusters without the mpirun "-wd" option
627    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
628      configuration
629    o give MNC the ability to create additional files rather than
630      exceeding a specified file size limit "MNC_MAX_FILESIZE"
631      - the default is just less than 2GB which is a practical limit
632        on many systems
633    o Compute the non-local term using either KPP vertical diffusivity (=default)
634       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
635    
636    checkpoint55h_post
637    o add verification test "vermix"
638    o remove all the *_ioinc flags and replace with the single global
639      outputTypesInclusive flag
640    o allow to set a vertical profile of vertical diffusivity for T & S
641    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
642    o useMNC moved from data.mnc to data.pkg
643    
644    checkpoint55g_post
645    o Renaming carbon AD experiments to comply with testreport conventions
646    o Updating adjoint of Held-Suarez hs94.1x64x5
647    o Fixing directives for non-ECCO forward_step, after ECCO directives
648      have been fixed to avoid recomp. of do_oceanic_phys
649      Works well for global_ocean.90x40x15,
650      but recomp. issue remains for carbon
651    o Updating adjoint output for natl_box_adjoint after
652      pkg/ecco has been modified (see taga c55d_post)
653    
654    checkpoint55f_post
655    o rename to timeave_init_fixed
656    
657    checkpoint55e_post
658    o some delicate re-shuffle of store directives to avoid one
659      extra call of do_oceanic_physics
660      affects ecco_the_main_loop.F, do_oceanic_physics.F
661      checkpoint_lev1_directives.h
662    o NB: this may break global_ocean adjoint temporarily,
663      but it is clear how to fix it. Will do later, need this now.
664    
665    checkpoint55d_post
666    o ECCO specific cost function terms (up-to-date with 1x1 runs)
667    o ecco_cost_weights is modified to 1x1 runs
668    o modifs to allow observations to be read in as
669      single file or yearly files
670    o enable to read exf forcing fields as either
671      single file or yearly files (flag useExfYearlyFields)
672    checkpoint55d_pre
673    
674    o switch between 2-level and 3-level checkpointing
675    o add ability of MNC to write local and "partial" (eg. 2D slices where
676      the full 3D field is never actually stored) arrays to NetCDF files
677      with the correct (that is, the complete multi-dimensional) set of
678      array indicies
679      - used in mom_vecinv() to write the diagFreq output
680      - tested (demonstrated) in verification/aim.5l_cs
681    o further mnc-ification
682      - add verification/lab_sea to the list with mnc setups
683      - fix undefined mnc v-names in cd_code
684      - add kpp to mnc output (both snapshot and timeave)
685    o non-hydrostatic code
686      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
687        in calc_gw.F
688      - defaults to viscAh
689      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
690        friction or Leith) in non-hydrostatic mode, as long as there is
691        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
692    o pkg/cost
693      extend simple cost functions to treat time mean quantities
694      (T,U,V) via cost_accumulate_state from cost_tile
695    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
696        be 2 times larger than the minimum size the advection scheme requires.
697        now get a perfect conservation of salt in advect_cs test-exp (updated)
698    o GGL90 (Gaspar's TKE mixed layer)
699      - add horizontal diffusion of TKE, requires exchanges in
700        do_fields_blocking_exchanges, horizontal diffusivity is zero by
701        default. In OPA there is no horizontal diffusion of TKE but the
702        mixing coefficients are computed from a horizontal average of TKE of
703        6 points or so. I think that diffusion has a little more physical
704        justification.
705      - clean up ggl90_calc in the hope of reducing memory usage (this hope
706        was in vain)
707      - mask tke-variable in ggl90_init
708    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
709    o fix biharmonic diffusion on CS-grid.
710    o more obcs stuff
711      - added obcs_external_fields_load as an alternative to the EXF-pkg option
712        for reading boundary values. This routine is called from
713        obcs_prescribe_read
714      - updated obcs_check
715      - changed sponge layer relaxation parameter units for days to seconds
716      - turned off sponge layer by default
717      - changed argument list of OBCS_CALC to myTime+deltaTclock
718      - fixed about 35 bugs in obcs_external_fields_load
719    
720    checkpoint55c_post
721    o obcs stuff
722      - new runtime flags useOBCSprescribe, useOBCSbalance
723      - re-arranged obcs_calc
724      - moved exf_getobcs to obcs_prescibe_read
725        obcs_prescibe_read is called after ORLANSKI stuff
726        and independent of it (executable can contain all).
727      - updated obcs_check
728      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
729        These may be necessary only if tangential velocities are
730        prescribed at OB, not sure, needs testing.
731    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
732      which simplifies the calls and passes the ifc check-bounds test
733    
734    checkpoint55b_post
735    o add a 2D scalar, Z location, exchange_2 routine.
736    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
737      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
738      affects advect_cs results (for the wrong reason): update output.txt
739    o use a more standard discretization for biharmonic viscosity ;
740     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
741      affects results of dome set-up: update output.txt
742    o fix gad_advection.F (CubedSphere part), back to version 1.23
743    o fix bug in mom_vi_del2uv.F (CubedSphere part).
744    
745    checkpoint55a_post
746    o merged code to
747      * prescribe/read time-dependent open boundaries
748        (works in conjunction with exf, cal)
749      * sponge layer code for open boundaries
750      * each boundary N/S/E/W now has its own CPP option
751        (healthy for the adjoint)
752    
753    checkpoint55
754    o up-to-date adjoint of previous breaks
755      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
756      - global_ocean_ebm: adjoint still needs fix (TLM ok)
757      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
758      - carbon: * remove tr1-related adjoint verification
759                * add ptracer as control variable
760    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
761      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
762    
763    checkpoint54f_post
764    o in verification/carbin/ remove experiment related to
765      ALLOW_PASSIVE_TRACER (array tr1 etc)
766      code_ad/ input_ad/ results_ad
767    
768    o add two new packages
769      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
770        + subject to optimization (memory)
771      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
772        + subject to reordering (many GOTOs in the original code)
773        + so far opps is called for every (i,j) point, and then operates in
774          the vertical; one may want to reorder the scheme in order operate in
775          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
776          fields)
777    o overhaul of IO so that we now have flags for MDSIO and/or MNC
778      - all verification tests compile and run with linux_ia32_g77
779      - defaults are compatible with current input files--nothing
780        should change if you were not previously using MNC
781      - MNC output has been added in numerous places (eg. timeave)
782        but there are still a few writes not yet do-able with MNC
783        (this is in progress)
784      - flags now allow for either/or/both use of MDSIO and MNC and
785        documentation will soon follow
786      - numerous small formatting cleanups for ProTeX
787    o add version info (via BUILD_INFO.h) to MNC and stdout
788    
789    checkpoint54e_post
790    o add two new packages
791      - pp81 (Packanowski and Philander, 1981), Richardson number and
792        stratification dependent mixing
793      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
794      - these scheme operate in a similar manner as KPP (without ghat, of
795        course), however there is only one diffusivity that is used for both
796        temperature and salinity (and passive tracers)ç
797    o add offline package
798    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
799      provided by Stephanie Dutkiewicz
800    o genmake2: add ability to search for C compilers and cleanup test output
801      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
802    
803    checkpoint54d_post
804    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
805    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
806      leading to additional shift by 5 days each year of integration
807       (i.e. leading to considerable offset over the years)
808    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
809    o start with no AB and no initial filtering (staggerTimeStep):
810      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
811    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
812      (external loading & cpl import/export stay in forward_step.F)
813    o update coupling interface to work with new staggerTimeStep
814    o change MDSIO ptracers_pickup.
815    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
816    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
817    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
818    
819    checkpoint54c_post
820    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
821      this affects (truncation error) output.txt of test-exp:
822       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
823    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
824    o change Qnet to always be the net heat flux, (+upward).
825      affects (truncation error) output of natl_box exp.: updated
826    o define the max number of passive tracers in PTRACERS_SIZE.h
827    o start to test mnc routinely in exp0
828    o add sea-ice loading (sIceLoad) as a new forcing field.
829    
830    checkpoint54b_post
831    o add testreport "-j JOBS" option for parallel builds (tested and pretty
832       impressive on Altix and Opteron systems)
833    o diagnostics can now write NetCDF files through the mnc package
834    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
835    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
836    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
837      affects (truncation error) output of lab_sea & natl_box exp.: updated
838    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
839    
840    checkpoint54a_post
841    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
842    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
843    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
844    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
845      + internal_wave (shift in writing cg2d_ini_res)
846    checkpoint54a_pre
847    
848    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
849      - modified verification/lab_sea and natl_box_adjoint accordingly
850    
851    checkpoint54
852    checkpoint53g_post
853    o prepare splitting of thermodynamics: store convect.counter in common block
854    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
855      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
856    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
857    o new parameter "nShapS": allow to treat differently S from T (nShapT)
858    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
859    o restore adjointability
860    
861    checkpoint53f_post
862    o modifications that affect AIM experiment results (update output.txt):
863      - no advection of S at top interface Nr (pkg/generic_advdiff)
864      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
865    o AIM pkg:
866      - include stability function into surf.Flux derivative relative to Tsurf
867      - calculate clear-sky radiation & surface temp. change (for diagnostics)
868    
869    checkpoint53e_post
870    o merged cylindrical coord configuration
871    o added rotating_tank experiment
872    checkpoint53e_pre
873    
874    checkpoint53d_post
875    o faulks upgraded: re-generate output.txt that have changed:
876       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
877    o Added Bryan and Lewis, 1979, vertical diffusivity profile
878    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
879    o added Sadourny discretization of Coriolis
880      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
881      - re-enabled use of omega3 (useAbsVorticity)
882    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
883      vector-invariant equations
884      - note: does *NOT* yet use same variable visc. for no-slip BC's.
885    o recoded the lateral boundary conditions for non-hydrostatic w, this time
886      hopefully without new bugs
887      - still to do: biharmonic friction for non-hydrostatic w
888    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
889    o regenerated output for global_ocean_ebm (using -ieee)
890    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
891      of mom_common/
892      - simple re-arrangement of instructions within computing loop
893    checkpoint53d_pre
894    
895    checkpoint53c_post
896    o new version of coupler for AIM+thSIce and Ocean models
897     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
898     - land: change Evaporation of snow
899     - aim with thSIce: fix bug in snow-precip.
900    o changes to calc_gw.F
901     - bug fix for w^2 term near the bottom boundary
902     - (hopefully) improve the lateral slip boundary condtions for use with
903        partial/looped cells
904      - because the bug fix changes two verification experiments anyway (exp5
905        and plume on slope), change the lateral boundary condition from half slip
906        to the value of no_slip_sides
907    o ebm package wasnt quite up to the parallel task. Fixed that.
908    o Adjoint of EBM package + verification
909      * TLM OK
910      * ADM not sufficient accuracy yet (needs further testing)
911    
912    checkpoint53b_post
913    o Commiting new energy balance model to repository
914      * package is pkg/ebm
915      * verif. is verification/global_ocean_ebm
916      * references are in ebm_driver.F
917    C      * X. Wang, P. Stone and J. Marotzke, 1999:
918    C        Global thermohaline circulation. Part I:
919    C        Sensitivity to atmospheric moisture transport.
920    C        J. Climate 12(1), 71-82
921    C      * X. Wang, P. Stone and J. Marotzke, 1999:
922    C        Global thermohaline circulation. Part II:
923    C        Sensitivity with interactive transport.
924    C        J. Climate 12(1), 83-91
925    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
926    C        Destabilization of the thermohaline circulation
927    C        by atmospheric eddy transports.
928    C        J. Climate 7(12), 1870-1882
929    o Will need long integration testing.
930    checkpoint53b_pre
931    
932    o created pkg/mom_common in preparation for variable viscosity code
933    o renamed and split ini_mnc_io
934    o pkg/land: only liquid water can diffuse or run-off
935    o AIM using land: soil wetness availability account for snow
936    o added printMapIncludesZeros to EEPARMS namelist
937    
938    checkpoint53a_post
939    o restore TAMC compatiility for exf_constants.h
940      (no usage of _d in .h)
941    o Additional storing in KPP in an attempt to fix
942      TAMC problem with adjoint of KPP code.
943      (no success...)
944      Identical code works fine with TAF.
945    o Fixed verification/natl_box_adjoint experiments.
946      Initial conditions for Experiments 4 and 5 are now
947      set to "SEAICE_initialHEFF=0", which is more reasonable,
948      and hence gives results closer to that of Experiment 2.
949      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
950    
951    checkpoint53
952    o stable checkpoint with up to date adjoint
953      TLM tests only run for 1st grdchk at the moment. Its unclear if
954      this is a code problem or a problem with resetting code for g_
955      variables that is being autogenerated wrong.
956      Otherwise:
957       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
958       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
959         are both still in chaos following their security messes.
960    
961    checkpoint52n_post
962    o various build (mostly genmake2) changes including:
963      - ability to build/run more easily within Cygwin and MacOS X
964      - more complicated Makefiles with a stronger dependence on Gnu Make
965    o pkg/seaice modifications
966      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
967        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
968        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
969      - changed proxy for geostrophic velocity and updated
970        verification/lab_sea/results/* accordingly
971      - removed ADI dynamic solver from pkg/seaice
972      - replaced all occurrences of 1/CSTICE or 1/CSUICE
973        they caused a segmentation fault under certain circumstances
974      - removed unused field WATR
975    o bug fix in exf-package:
976      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
977         now reflect that.
978    o small fixes in the cal-package:
979      - set reference date to first of January for the 'model'-calendar
980      - failing of cal_CheckDate in cal_FullDate now actually results in a
981        warning
982    o small modifications in exf-package to increase flexibility:
983      - change climtempfreeze from a constant to a runtime parameter that
984        is specified in data.exf_clim (default = -1.9)
985      - introduce runtime parameter windstressmax (default = 2.0) that is
986        specified in data.exf
987    o fix in pkg/thsice:
988      - update Evap (Tsf changes) to be consistent with Latent heat flux
989      - maintain snow precipitation unchanged (even if Tsf >=0).
990     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
991    
992    checkpoint52m_post
993    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
994      this does not change any of the results, because myIter=0 in swfrac always
995      lead to jwtype=2 (the default anyway), but the call makes little sense
996      as a default
997    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
998    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
999      atmospheric model (AIM) to use it ; add a "slab ocean" component.
1000    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
1001    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
1002    o extending useSingleCpuIO option to work with new exch2 I/O format
1003      - old-style, missing-tile I/O is still accessible by defining CPP
1004        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
1005    o monitor package can write to NetCDF files and/or STDOUT
1006    o fix re-definition bug in MNC_GRID_INIT_ALL()
1007    o doc/api_reference added
1008      - a framework for building an API Reference Manual using all
1009        the "protex" comments embedded in the code
1010      - see pkg/generic_advdiff, pkg/mnc for examples
1011    o MNC:
1012      - make myThid the last argument for all subroutines
1013      - new default for the grid files: NO halos
1014      - add useMNC and other run-time flags
1015      - separate per-file-group handling of the unlimited dimension
1016      - early initialization of MNC w/ flags read at the eeboot stage
1017        and lookup tables set in initialize_fixed
1018      - write all MNC output to a freshly-created directory
1019    o thermodynamics sea-ice (thsice) is now tested with testreport.
1020    o test exp. advect_cs: use the standard cs32 grid ; update output.
1021    o Added functionality to grdchk:
1022      pick global i,j,k position (or nearest wet) where to perform check.
1023    
1024    checkpoint52l_post
1025    o new land formulation:
1026      a) use ground enthalpy as prognostic variable to ensure exact
1027         energy conservation.
1028      b) account for water temperature and for latent heat of freezing
1029         in all processes (rain, run-off, ground storage)
1030      c) compute surface and ground temperature implicitly.
1031    o aim_v23 modification for new land model:
1032      a) Treat separately land / ocean / sea-ice surface fluxes
1033         to allow implicit computation of land & sea-ice surface temp.
1034      b) add snow precipitation.
1035    checkpoint52l_pre
1036    
1037    o fix problem (when 1 tile is empty) in min/max monitor.
1038    o fix bug in timeAve (u,vZetatave in common block)
1039    o no restoring terms under ice for pkg/seaice
1040    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
1041    o bug fix for pkg/seaice pickups
1042    o change MNC call locations and add coordinate attributes
1043    o mask vorticity at the corner ; affects global_ocean.cs output
1044    o fix ini_curvilinear_grid ; test CS experiments with mpi
1045    o aim.5l_cs: modify sea-ice fraction input file ; update output
1046    o exf: Adding simple range check routine for exf fields after read
1047    
1048    checkpoint52k_post
1049    o removed top-level directory "diags"
1050      - we migrated these functions to pkg/timeave a long time ago
1051    o fixed bug introduced in pkg/monitor
1052    o accuracy ctrlprec = 32 insuffient for gradient checks using
1053      averaged fields (I/O via cost_averages)
1054      -> use ctrl.h in active_file*.F to control I/O precision.
1055    o paramter list of CALL ADTHE_MAIN_LOOP
1056    o added initial do_the_model_io to ecco
1057    o set all ...Freq to zero after cost_final
1058      taveFreq, dumpFreq, pChkptFreq
1059    o MAIN and ECCO differentiability restored
1060    
1061    checkpoint52j_post
1062    o fix nchklev in tamc.h for global_ocean...
1063    o Bringing flow and store directives up-to-date
1064    o Really weird thing!
1065      call do_the_model_io from the_main_loop with parameters
1066      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
1067      TAF places a faulty re-call of initialise_varia
1068      after cost_final call which should not be there!
1069    checkpoint52j_pre
1070    
1071    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
1072      error messages
1073    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
1074    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
1075      debug output
1076    o modfied mdsio_writefield.F to handle non-global files under exch2
1077    o update AIM Cubed-Sphere exp (aim.5l_cs):
1078      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
1079    o update AIM Equatorial Channel exp:
1080      use standard aim_v23 pkg and change the SST fields to be more realistic.
1081    o globalFile now works with exch2
1082    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
1083      mon_vort3.F to make exch2 friendly with >1 tile per cube face
1084    o limit timeave output for hi-res integrations
1085    
1086    checkpoint52i_post
1087    o removed CPP_EEOPTIONS.h from verification/*/code
1088    o updated the tiling for global_ocean_pressure
1089    checkpoint52i_pre
1090    
1091    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
1092      the old pkg/aim).
1093    
1094    checkpoint52h_pre
1095    o shortened offending lines in exch2_send_rx?.template
1096    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
1097    o genmake2: add build & execute test for NetCDF code
1098    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
1099      old grid files, moved CPP_EEMACROS.h to pkg/exch2
1100    o added useSingleCPUIO flag to monitor.F and mon_out.F
1101    o added temporary hack for sea-ice dynamics on the cube:
1102      metric terms are ignored and it is assumed that
1103      there is no sea-ice on cube faces 1, 2, 4, and 5.
1104    
1105    checkpoint52f_post
1106    o added exch2 cube routines to pkg/exch2
1107    o modified hs94.cs-32x32x5 to use it
1108    o added new grid files to hs94.cs-32x32x5
1109    checkpoint52f_pre
1110    
1111    checkpoint52e_post
1112    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
1113      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
1114    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
1115      to work with implicit vertical advection and AB ;
1116    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
1117    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
1118     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
1119    checkpoint52e_pre
1120    
1121    o fix bug in impldiff when Nr=1 or Nr=2.
1122    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
1123    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
1124    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
1125      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
1126    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
1127    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
1128    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
1129    
1130    checkpoint52d_post
1131    o re-tiled many expts to allow comparison in multi-processor mode
1132      - updated output accordingly
1133      - changed hs94.128x64x5 to use intial T from file rather than use the
1134        random number generator
1135    o add infrastructure in model routines for fizhi and gridalt packages
1136    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
1137    o changes to permit hi-res, cubed-sphere, configuration
1138      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
1139      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
1140      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
1141        of surface winds for the cube
1142      (A verification experiment, based on global_ocean.cs32x15, but with
1143       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
1144       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
1145       complete with example surface forcing files and matlab scripts to look
1146       at the output and compare it with that of global_ocean.cs32x15.)
1147    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
1148       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
1149       to conform to the common rule.
1150    o check-in the first version of the coupler + interfaces for multi-components
1151       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
1152       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
1153       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
1154       - ocean and atmos. share the same horizontal grid (no interpolation).
1155       - exchanges between component and coupler is done in forward_step
1156    o new verification experiment, cpl_aim+ocn:
1157       coupled ocean - AIM atmosphere on cs32 grid.
1158    
1159    checkpoint52d_pre
1160    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
1161    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
1162    
1163    checkpoint52c_post
1164    o Fixing OPTIONS files for use of exf:
1165      - ALLOW_ECCO not needed
1166      - ECCO_CPPOPTIONS.h should not be included from
1167        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
1168        as has been the case in the past
1169      - All cal/exf related options are currently set in
1170        single header file. Should remain so until we
1171        agree on a consistent new policy.
1172    o Removed all CPP options for cal package.
1173      cal has no more CPP options.
1174    o modified STOREs in GAD_ADVECTION
1175    o corrected key comp. for passkey
1176    
1177    checkpoint52b_post
1178    o new version: "thsice" of thermodynamic sea-ice pkg:
1179     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
1180     - modify fluxes but do not change theta directly;
1181     - light cleaning of bulk_force pkg (still needed with thsice).
1182     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
1183       + output_thsice.txt to test thsice & bulk_force pkgs.
1184    o put back grid & coriolis monitor output.
1185    checkpoint52b_pre
1186    
1187    o call "do_the_model_io" at the beginning (=> dump initial state)
1188    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
1189    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
1190      (need info on NUMBER_OF_PTRACERS)
1191    o missing PTRACERS headers in some routines
1192    o default tamc.h in pkg/autodiff supposed to crash
1193      to ensure proper customization
1194    
1195    checkpoint52a_post
1196    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
1197      - moved surfaceTendencyTice from pkg/seaice to main code
1198      - subroutine FREEZE_SURFACE now limits only surface temperature
1199        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
1200        => new output.txt for global_ocean.cs32x15 & global_with_exf
1201      - keep the old version of FREEZE for backward compatibility;
1202        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
1203      - corresponding modifs for TAF directives
1204    o added surface flux output variables to TIMEAVE_STATVARS
1205    o time-averaged output for pkg/ptracers
1206    o fix problem with ECCO-related divided adjoint
1207      snapshot file was missing some ad-variables,
1208      but no warning issued by TAF
1209    
1210    checkpoint52a_pre
1211    o some bug fixes for #undef REAL4_IS_SLOW
1212    
1213    checkpoint52 = ecco_c52_e35
1214    o after testing adjoints of checkpoint51u_post
1215    
1216    checkpoint51u_post
1217    o this is the post-merge tag of the ecco-branch
1218      (needs another clean checkout and re-testing)
1219    o various natl_box_adjoint configs and results
1220      but no input fields
1221    o obcs adjoint not yet merged!
1222    o adding ECCO global 1x1 and 2x2 degree configs
1223    o updated/extended some store directives for seaice
1224    o pkg/ecco now containes ecco-specific part of cost function
1225    o top level routines the_main_loop, forward_step
1226      supersede those in model/src/
1227      previous input data.cost now in data.ecco
1228      (new namelist ecco_cost_nml)
1229    o in ctrl/ cleaned some cross-dependencies and updated CPP options
1230    
1231    checkpoint51t_post
1232    o this is the pre-merge tag of the ecco-branch
1233    
1234    checkpoint51s_post
1235    o cleanup: removed various obsolete #define-s
1236    o pkg/grdchk
1237      - renamed 'ph-grd 3' to 'grad-res'
1238      - merged from ecco-branch
1239        (remaining bug fixes for obcs gradient checks)
1240      - additional high-precision output for testreport
1241        (grep for 'precision_grdchk_result')
1242    
1243    checkpoint51r_post
1244    o cleaned up or removed CPP_OPTIONS.h files
1245    o updated results for some of the tests to reflect the new
1246      optfiles (-ieee: -O0 instead of -O3)
1247    
1248    checkpoint51q_post
1249    o cd_code:
1250      - moved cd_scheme.F -> cd_code_scheme.F
1251      - separate read_checkpoint from cd_code_ini_vars.F
1252      - separated cd_code part from write_checkpoint
1253      - updated AD_SOURCE, generated .flow
1254      - added CD_CODE_VARS.h to the_main_loop
1255      - Moving cd_code specific store dir.s to pkg/cd_code
1256    o ctrl package totally restructured
1257      - pack/unpack now optional and decoupled from
1258        xx_/adxx_ I/O
1259      - ctrl_pack/unpack cleaned
1260        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
1261      - confined inclusion of AD_CONFIG.h to where necessary.
1262    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
1263    
1264    checkpoint51p_post
1265    o create initial cd_code package
1266      - WARNING: the initialization of fields within packages
1267        is broken because INI_FIELDS (where READ_CHECKPOINT is
1268        called) is called *before* PACKAGES_INIT_VARIABLES.
1269        This seems to be backwards since
1270        1) its important to initially zero the entire field including
1271           the "halo" region
1272        2) zeroing needs to be done *before* reading pickup info
1273           and the pickup call might or might not happen in any
1274           particular run
1275      - this needs an overhaul for R2
1276    o cleanup verification/*/code/GMREDI_OPTIONS.h
1277    o cleanup testreport
1278    
1279    checkpoint51o_post
1280    o bringing AD-related verif's up to date with genmake2
1281      - carbon/
1282      - global_ocean.90x40x15/
1283      - hs.94.1x64x5/
1284      - (front_relax/ )
1285    o (more) consistent directory structure for AD-related verif.'s
1286    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
1287    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
1288    o bug fix in find_alpha.F for MDJWF:
1289      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
1290        change rho -> rho-rhoConst
1291      - replace call find_rho to find_rhonum
1292    o initialisation of rFlx extended to full array (required by TAF)
1293      and shifted to thermodynamics
1294    o removed PTRACERS.h in ptracers routine
1295    o added surfacetendencyPtr to S/R parameter list pracers_forcing
1296    o Correcting initialisations for fVerU, fVerV.
1297    o helping TAF to recognize dependency on kUp for
1298      fVerU, fVerV
1299    o Replacing delZ by delR in pkg/ctrl/
1300    checkpoint51o_pre
1301    
1302    o undid all of cp51 pending some cleanups and discussion
1303    o added the [#include "AD_CONFIG.h"] statement to all files that need
1304       it for adjoint/tl #defines
1305     o re-worked the build logic in genmake2 to support AD_CONFIG.h
1306     o removed tools/genmake since it no longer works
1307    
1308    checkpoint51n_post
1309    o modifications to make FREEZE flux visible to pkg/kpp
1310      - moved surfaceTendencyTice from pkg/seaice to main code
1311      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
1312      - subroutine FREEZE now limits only surface temperature
1313        (this means new output.txt for global_ocean.90x40x15,
1314         global_ocean.cs32x15, and global_with_exf)
1315    o added surface flux output variables to TIMEAVE_STATVARS
1316    
1317    checkpoint51n_pre
1318    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
1319    o added [#include "AD_CONFIG.h"] to all files that use the following
1320      defines:
1321      - ALLOW_ADJOINT_RUN
1322      - ALLOW_TANGENTLINEAR_RUN
1323      - ALLOW_ECCO_OPTIMIZATION
1324    
1325    checkpoint51m_post
1326    o incorporating changes to get TAMC/TAF working in genmake2
1327      - added new TAMC/TAF targets to the Makefile
1328      - various cleanups related to package handling
1329      - these changes should have no impact on the forward model
1330    
1331    checkpoint51l_post
1332    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
1333     - faster algorithm for cal_addtime.F
1334     - higher precision arithmetic, where needed
1335     - pkg/exf *startdate variables changed from calendar date to
1336       model integration time
1337    
1338    checkpoint51l_pre
1339    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
1340    o enable to apply restoring on S & T only in a latitude band.
1341    o update output (external_forcing_surf modif. change truncation errors)
1342       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
1343    
1344    checkpoint51k_post
1345    o change default to: useNHMTerms=.FALSE.
1346     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
1347       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
1348     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
1349        exp1, ideal_2D_oce
1350     - change data file of oceanic exp (leave the results unchanged for now)
1351       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
1352    o set gravitySign automatically according to the vertical coordinate used
1353      (and change sign: back to "logical" value: +1 when R increases downward)
1354    o added an include barrier to the default CPP_OPTIONS.h and
1355      removed the #include "PACKAGES_CONFIG.h" from it
1356    o fix a bug in mom_fluxform (from chk51j_post)
1357    
1358    checkpoint51j_post
1359    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
1360    o adjusted some flow directives (dynamics, thermodynamics)
1361    o added cubed-sphere case to test cost function
1362    o heckpoint_lev?_directives.h now include
1363      pkg-specific directives, whenever those are enabled.
1364    o Moving pkg-specific flow directives to corresponding pkg
1365      Moving pkg-specific differentiation list to corresponding pkg
1366      Moving pkg-specific checkpoint-lev storing to corresponding pkg
1367      ---> conventions are
1368           - pkg_ad.flow
1369           - pkg_ad_diff.list
1370           - pkg_ad_check_lev?_dir.h
1371    
1372    checkpoint51i_post
1373    o merge of the branch-genmake2
1374      - knowingly breaks the older genmake
1375      - automatic generation of all ALLOW_${PKG_NAME} defines
1376      - new testreport supersedes older testscript
1377    o large number of package inclusion and header cleanups
1378    checkpoint51i_pre
1379    
1380    o new output for adjoin of global ocean vector invariant
1381    o fix for checkpoint of thermodynamic seaice and bulk_force
1382    o Steph gchem various cleanups
1383    
1384    checkpoint 51h_pre
1385    o fixed some single quotes
1386    o modify gchem pkg to be more versatile
1387    o modifications to clean up dic pkg
1388    o add pkg/cfc
1389    
1390    checkpoint51g_post
1391    o provide links for ARPACK and ADM*TLM
1392    o start removing verification/vero/
1393    o update AD-related stuff
1394      (in particular some IF-statements in model/src/ routines)
1395    o adding to verification/global_ocean.90x40x15/ adjoint of
1396      vector invariant setup
1397    
1398    checkpoint51f_post
1399    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
1400    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
1401      of tracer Green's fucntions for ocean inversion project.
1402    
1403    checkpoint51f_pre
1404    o Added on-the-fly spatial interpolation capability
1405        "USE_EXF_INTERPOLATION" to pkg/exf.
1406      - This is a temporary Cartesian-grid hack until
1407        the super-duper ESMF coupler becomes available.
1408      - See verification/global_with_exf/README for usage example.
1409      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
1410        flags and modified pkg/seaice accordingly.
1411    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
1412        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
1413        non-local transport term.
1414    
1415    checkpoint51e_post
1416    o pkg/mom_vecinv:
1417      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
1418      - add time-ave diagnostic of vorticity advection.
1419    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
1420    o atmospheric geopotential: - include water vapor effect;
1421                                - use p^kappa in p* scaling.
1422    o land pkg: read initial state from files.
1423    o AIM : add stratospheric drag in the upper level
1424    
1425    checkpoint51d_post
1426    o change function ILNBLNK (=> last non-blank char.) to return zero
1427      (instead of the string length) when the string. char is empty
1428    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
1429    o modif's to restore TAMC compatibility
1430      - avoid "_d" constructs in PARAMETER declarations
1431      - avoid interrupting lines by comment lines
1432    o Use cluster local disks for purely local I/O
1433      vs. globally visible disks needed for ctrl stuff
1434      (merged from ecco-branch)
1435      - new active_file_loc... and mdsio_..._loc routines
1436      - affected packages: autodiff, ctrl, grdchk, mdsio
1437    
1438    checkpoint51c_post
1439    o introducing integer flag debugLevel
1440      - debLevZero: suppress all output
1441      - debLevA: standard
1442      - debLevB: equivalent to current debugMode=.TRUE.
1443    o introducing pathname variable mdsioLocalDir for mdsio
1444      that can be specified at runtime
1445      (relevant for cluster I/O to local disk)
1446    `
1447    >>>checkpoint51b_post
1448    adjoint of ptracers
1449    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
1450    o extended state in checkpoint_lev?, etc.
1451    o alternative ctrl/cost with tr1 or ptracer
1452    o new comlev1_bibj_ptracers
1453    o new ptracers.flow
1454    o made ptracers_forcing same as external_forcing_s
1455    o added verification for adjoint with ptracers
1456      - adm. grdchk fail so far
1457      - tlm. grdchk OK
1458      - checked tapelev/comlev recomputations: OK
1459    <<<checkpoint51b_pre
1460    
1461    checkpoint51a_post
1462    o added code for biogeochemistry package
1463      - new pkgs: dic, gchem
1464      - new subroutine in ptracers
1465    o modify code for biogeo packages
1466      - in model/src and pkg/ptracers
1467    
1468    checkpoint51
1469    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
1470      - autodiff, ctrl, exf, grdchk, seaice
1471      kept separate packages
1472      - cost, ecco, obcs
1473    o updating verification/internal_wave, verification/lab_sea
1474      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
1475    
1476    checkpoint50i_post
1477    o Preparing next differentiable checkpoint and sync
1478      of MAIN vs. ecco-branch
1479      - 1st step: this one is differentiable
1480      - 2nd step: next(! not this) checkpoint will have updated packages
1481                  from ecco-branch)
1482    
1483    checkpoint50h_post
1484    o new package "land": provide surface BC for AIM.
1485    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
1486    o AIM: use true log-P extrapolation for near surface temp (= as in
1487        F.Molteni paper) ; update aim.5l_cs output.
1488    o New variable in PARM03 for more flexible pickups
1489    o somewhat cleaned package initialisation sequence for
1490      ctrl/ cost/ ecco/ in packages_... routines
1491    
1492    checkpoint50g_post
1493    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
1494      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
1495      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
1496        made the default because of faster convergence than ADI
1497    
1498    checkpoint50f_post
1499    o exf totally restructured
1500      - replaced all exf_set_ routines by one generic exf_set_gen.F
1501        and made sure it's still differentiable
1502      - split exf_getffields.F into new exf_bulkformulae.F
1503      - exf_inscal_/exf_outscal_ suffixes consistent with field names
1504      - updated adjoint/makefile and relevant verif. accordingly
1505    
1506    checkpoint50f_pre
1507     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
1508          + change Evap over land. (update aim.5l_cs output)
1509     o added missing .cvsignores and made uniform across expts
1510     o changed configuration of tidal_basin_2d expt
1511     o added pkg/debug functions for tracing code in fatal crashes
1512     o tidied pkg/monitor to use MONITOR_OPTIONS.h
1513     o new fn in pkg/monitor to stop model if solution grows too big
1514     o removed lots of single quotes from comments
1515    
1516    checkpoint50e_post
1517    o make KPP work with PTRACERS
1518     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
1519       nearly a copy of kpp_transport_s
1520     - there is no analogue to SurfaceTendencyS, so I have to use
1521       gPtr(of the surface layer) instead
1522    o add a new platform SunFire+mpi (SunFire 15000) to genmake
1523    checkpoint50e_pre
1524    
1525    checkpoint50d_post
1526    o change kpp output from multiple-record state files to single-record state
1527      files analogous to write_state.F
1528    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
1529      analogous to the cg2d-related output.
1530    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
1531      so that writing to internal file fn (with length 512) fails.
1532    checkpoint50d_pre
1533    
1534    checkpoint50c_post
1535    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
1536    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
1537    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
1538    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
1539    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
1540    
1541    checkpoint50c_pre
1542    Merging from release1_p13:
1543    o bug fix for pkg/seaice dynamic solver
1544    o Added SEAICE_initialHEFF to pkg/seaice
1545    
1546    checkpoint50b_post
1547    o store u*,v* in gU,V instead of in guNm1,gvNm1
1548    o in order to put the momForcing out of the Adams-Bashforth:
1549      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
1550      to timestep.F
1551    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
1552    o re-generate output for highly sensitive test-exp:
1553       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
1554    
1555    checkpoint50b_pre
1556    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
1557    o corrected CPP option mismatch in exf_Bulk... functions for case
1558      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
1559    
1560    checkpoint50a_post
1561    o Bug fix for merging between c50 and KPP.
1562      ikey was passed from thermodynamics to kpp_calc via
1563      common block rather than being recomputed in kpp_calc,
1564      in contradiction with new key itdkey.
1565      New key ikppkey created, and tamc.h headers updated.
1566    
1567    checkpoint50
1568    - 2nd step of merge with ecco-branch:
1569      merge changes in ecco-branch back into main trunk
1570    - bug fix in find_alpha
1571    - more storing in gmredi_calc_tensor.F, kpp_routines.F
1572    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
1573    - merged some sliced AD support routines
1574    
1575    checkpoint49
1576    merged from ecco-branch:
1577    o exf:
1578      - Enable initialisation of forcing fields to constant
1579        (runtime) values.
1580      - in exf_getffields.F
1581        Reduce i-/j-loop to interior domain, discarding overlaps.
1582        That also fixes wrong TAF-key computations for key_1, key_2
1583        with bulf formulae.
1584      - exf_init.F modify #ifdef for exf_init_evap
1585      - exf_getffieldrec.F, ctrl_getrec.F
1586        The following INT-usages are not safe:
1587          fldsecs  = int(fldsecs/fldperiod)*fldperiod
1588          fldcount = int(fldsecs/fldperiod) + 1
1589        and were modified.
1590    o autodiff: checkpoint_lev...
1591      - updated storing for bulk formulae (some arrays were missing)
1592      - added state for seaice package
1593      - synchronized with main branch
1594    o DIVA:
1595      Modif.s in
1596      - the_main_loop.F
1597      - the_model_main.F
1598      and added cost_final_restore.F cost_final_store.F
1599      o With these changes, it is possible to fully separate
1600        the first forward run to compute the cost function (mdthe_main_loop)
1601        and adjoint runs over individual DIVA intervals (adthe_main_loop)
1602        into separate model executions.
1603        This enables better tuning of DIVA to given queue sizes.
1604      o Loss of cost function value in consecutive DIVA runs is
1605        fixed by storing to 'costfinal' file.
1606      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
1607        beginning/end of adjoint integration is accounted for.
1608      The current changes apply to TAF-1.4.26.
1609      TAF has one remaining bug, requiring one manual change
1610      (see MITgcm manual).
1611    o cal: synchronized between MAIN and ecco-branch
1612    
1613    checkpoint48i_post
1614    o Changes to restore differentiability of code w.r.t. previous tag
1615      (mostly adding new routines to make list and replacing
1616      pressure by totPhiHyd).
1617    o Updated and merged grdchk package
1618      - has both ADM and TLM checks
1619      - works for single- and multi-proc.
1620      - output cleaned
1621      - worked successfully for parallel DIVA
1622    o genmake:
1623      - Adding -platform=SP4
1624      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
1625    o Modif. for DIVA:
1626      ctrl_unpack should not be called in intermediate DIVA interval.
1627      (similar thing would apply for active files such as
1628      tbar, sbar, psbar, which should not be reinitialised;
1629      only relevant for ecco-branch)
1630    
1631    checkpoint48h_post
1632    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
1633    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
1634    o Added SEAICE_initialHEFF to pkg/seaice
1635    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
1636    
1637    checkpoint48g_post
1638    --- EOS:
1639    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
1640      store total Potential in totPhyHyd for diagnostics & EOS.
1641    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
1642    --- Pressure/geopotential gradient:
1643    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
1644    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
1645      ( changes results of global_ocean_pressure )
1646    o NLFS + z-coord.: add eta*Rho' contribution.
1647    o accurate phiHyd when using interface-W at the middle between 2 centers
1648     ( changes results of ideal_2D_oce )
1649    o includes r* 2nd term in potential gradient.
1650    
1651    checkpoint48f_post
1652    Merging from release1_p12:
1653    o Modifications for using pkg/exf with pkg/seaice
1654      - improved description of the various forcing configurations
1655      - added basic radiation bulk formulae to pkg/exf
1656      - units/sign fix for evap computation in exf_getffields.F
1657      - updated verification/global_with_exf/results/output.txt
1658    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
1659      (SBO) core products, including oceanic mass, center-of-mass,
1660      angular, and bottom pressure (see pkg/sbo/README.sbo).
1661    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
1662      to avoid negative values in shallow regions.
1663      - updated verification/natl_box/results/output.txt
1664      - updated verification/lab_sea/results/output.txt
1665    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
1666    o Added useSingleCpuIO option (see PARAMS.h).
1667    o Updated useSingleCpuIO option in mdsio_writefield.F to
1668      work with multi-field files, e.g., for single-file pickup.
1669    o pkg/seaice:
1670      - bug fix in growth.F: QNET for no shortwave case
1671      - added HeffFile for specifying initial sea-ice thickness
1672      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
1673    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
1674      kpp_transport_t.F, forward_step.F, and the_main_loop.F
1675    o pkg/seaice:
1676      - adjoint-friendly modifications
1677      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
1678    
1679    checkpoint48e_post
1680    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
1681    o dynamics: change definition of computational domain & adapt mom_fluxform
1682      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
1683    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
1684        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
1685        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
1686        global_ocean.90x40x15 global_with_exf global_ocean_pressure
1687        inverted_barometer solid-body.cs-32x32x1
1688      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
1689    
1690    checkpoint48d_post
1691    o in preparation for r*:
1692     a) use pre-computed gradient of hydrostatic potential:
1693        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
1694     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
1695        => affects results of glob_oce_pressure (different truncation error)  
1696      update output.txt of ideal_2D_oce & global_ocean_pressure
1697    
1698    checkpoint48d_pre
1699    o in preparation for r*:
1700      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
1701      pass the 2 comp. of the grad. as arguments to momentum S/R.
1702      but for the moment, only used if it does not change the results.
1703    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
1704    
1705    checkpoint48c_post
1706    Modifications in treatment of initial flux forcing controls
1707    to avoid extra storing of flux fields.
1708    
1709    checkpoint48c_pre
1710    o Added tidal_basin_2d experiment (currently 1D!)
1711    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
1712    
1713    checkpoint48b_post
1714    o r* coordinate added in #ifdef NONLIN_FRSURF block.
1715     (modification to pressure gradient not yet implemented)
1716    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
1717      (for U & V) that are used for vertical advection of momentum.
1718    
1719    checkpoint48a_post
1720    o In preparation for r*, use temp. array to compute vertical transport
1721       in flux-form momentum pkg. => change results of few test-exp.
1722      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
1723                        lab_sea, natl_box & plume_on_slope
1724    
1725    checkpoint48
1726    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
1727    
1728    checkpoint47j_post
1729    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
1730    o moved adexch from forward_step to addummy_in_stepping
1731    o added exch in ctrl_map_...
1732    o aveFreq.=0. at end of cost_final to avoid overwrite in
1733      reverse checkpointing loop
1734    o Yet more changes in gmredi:
1735      * adgmredi_calc_tensor
1736        avoiding all recomputation of gmredi_slope_limit
1737      * adgmredi_x/y/rtransport
1738        added flag for excessive storing to avoid recomp. of
1739        u/v/rtans, dTdx/y/z
1740        -> this is not really necessary and very memory-consuming
1741      * adgmredi_slope_psi:
1742        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
1743      * gmredi_slope_limit
1744        re-activated full calculation of taperfct for case 'ac02'
1745    o updating verification/ adjoints of carbon, global_ocean.90x40x15
1746    
1747    checkpoint47i_post
1748    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
1749    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
1750      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
1751    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
1752    o gmredi: fix few bugs.
1753    
1754    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
1755    This will be a good checkpoint to plug into the ecco-branch.
1756    o few modif.'s to get latest version adjointed
1757      (mainly kick out code in ini_linear_phisurf)
1758    o modif's to run adjoint with exactConserv
1759    o case GM_BOLUS_ADVEC should be cleaned
1760      S/R gmredi_slope_psi should be cleaned
1761    o verification/carbon now has exactConserv=.TRUE.
1762    
1763    checkpoint47g_post
1764    o time-average AIM output: becomes independent from statvars time-average
1765      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
1766    o After TAF bug fix:
1767      Tested adjoint of gmredi package.
1768      Tests were done with checkpoint47 rather than with latest
1769      checkpoint47f_post since the latter is broken for the adjoint
1770      verification/carbon/ contains both ADM and TLM gradient checks.
1771    Here they are, before they get changed/lost/stolen.
1772    Mostly modif.'s to fix numerical sensitivities.
1773    Gradient checks OK for
1774    - GM_taper_scheme:
1775      * clipping
1776      * ac02
1777      * linear
1778      * glw91
1779      * dm95
1780      * ldd97
1781    - GMREDI_OPTIONS:
1782      * GM_VISBECK_VARIABLE_K
1783      * GM_NON_UNITY_DIAGONAL
1784      * GM_EXTRA_DIAGONAL
1785      * GM_BOLUS_ADVEC
1786    in conjunction with data.gmredi parameters to be checked in
1787    in a few minutes under verification/carbon/code/
1788    
1789    checkpoint47f_post
1790    Merging from release1_p10:
1791    o modifications for using pkg/exf with pkg/seaice
1792      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
1793        and SEAICE_EXTERNAL_FLUXES
1794      - pkg/exf CPP options EXF_READ_EVAP and
1795        EXF_NO_BULK_COMPUTATIONS
1796      - usage examples are Experiments 8 and 9 in
1797        verification/lab_sea/README
1798      - verification/lab_sea default experiment now uses
1799        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
1800    
1801    checkpoint47e_post
1802    o created a tag prior to creating a branch
1803    
1804    checkpoint47d_post
1805    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
1806      at the bottom boundary had an erroneous half slip boundary condition
1807    o added bottom drag and no slip boundary condition capabilities to
1808      oceanic pressure coordinates code
1809    o added new verification experiment global_ocean_pressure, this experiment is
1810      also described in the tutorial section of the manual
1811    checkpoint47d_pre
1812    
1813    checkpoint47c_post
1814    o Added a verification experiment for a global cubed-sphere ocean run
1815      -  verification/global_ocean.cubed32x32x30
1816      -  uses pkg/therm_seaice and pkg/bulk_forcing
1817    
1818    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
1819    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
1820      when using P-coordinate; only implemented for atmospheric config.
1821    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
1822      NOTES: requires option NONLIN_FRSURF to be "#define".
1823    o update advect_xz/results/output.txt (left from checkpoint44g_post)
1824    
1825    checkpoint47b_post
1826    Merging from release1_p9:
1827    o pkg/seaice
1828      - removed GOTO's and added taf directives
1829      - double precision constants to reduce the g77 (Linux)
1830        to F77 (SGI) differences reported in release1_p8
1831    o tools/genmake
1832      - added SGI options
1833    o verification/testscript
1834      - updated to that of checkpoint47a_post
1835    o verification/global_ocean.90x40x15/input/eedata
1836      - modified for SGI f77 compatibility
1837    o verification/lab_sea
1838      - added description of sea-ice model
1839      - added missing matlab routines
1840      - added test of thermodynamics parallelization
1841    
1842    checkpoint47a_post
1843    o new pkg: aim_v23
1844     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
1845       for now, keep the same surface forcing as before.
1846     - Part-Cell implemented into AIM; check that Heat & Water are conserved
1847     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
1848     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
1849    o add diagnostic of surface correction term in monitor output
1850    
1851    o bulk_force and therm_seaice
1852    - Two packages:  bulk_force (Bulk forcing)
1853      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
1854    - Earlier integration from Stephaine Dutkiewicz
1855      and Patrick Heimbach.
1856    - Two ifdef statements for compile time,
1857       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
1858    
1859    checkpoint47
1860    differentiable version of checkpoint46n_post
1861    o bug fix in quasihydrostaticterms
1862    o * "clean" adjoint code (in terms of extensive recomputations)
1863        can now be obtained for all GMREDI options (i.e. for
1864        - GM_VISBECK_VARIABLE_K
1865        - GM_NON_UNITY_DIAGONAL
1866        - GM_EXTRA_DIAGONAL
1867        - GM_BOLUS_ADVEC )
1868      * However, wrong gradient check problem remains unsolved.
1869      * New CPP options have been introduced for different
1870        tapering schemes
1871    o external_fields_load now part of differentiation list
1872    o pressure needs multiple storing;
1873      would be nice to have store_pressure at beginning or
1874      end of forward_step, e.g. by having phiHyd global (5-dim.)
1875      (NB: pressure is needed for certain cases in find_rho,
1876      which is also invoked through convective_adjustment).
1877    o recomputations in find_rho for cases
1878     'JMD95'/'UNESCO' or 'MDJWF' are OK.
1879    o #define ATMOSPHERIC_LOADING should be differentiable
1880    o ini_forcing shifted to begining of initialise_varia
1881    o Incorporating QNVS line search routines into MITgcm
1882      (this is separate code, and therefore not under pkg)
1883      lsopt/, optim/
1884    o Updated verification/carbon/
1885      - #define GM_VISBECK_VARIABLE_K
1886      - GM_taper_scheme    = 'ldd97'    
1887    
1888    checkpoint46n_post
1889    Merging from release1_p8:
1890    o verification/natl_box:
1891      updating new external_fields_load routine
1892    o New package: pkg/seaice
1893      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
1894      The sea-ice code is based on Hibler (1979-1980).
1895      Two sea-ice dynamic solvers, ADI and LSR, are included.
1896      In addition to computing prognostic sea-ice variables and diagnosing
1897      the forcing/external data fields that drive the ocean model,
1898      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
1899      The implied surface heat flux is then stored in variable
1900      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
1901      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
1902      non-local transport term.  Because this call precedes model
1903      thermodynamics, temperature under sea-ice may not be "exactly" at
1904      the freezing point by the time theta is dumped or time-averaged.
1905      N.B.: fairly large differences in accuracy occur across
1906            different platforms/compilers; comparison between
1907            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
1908            generated output gives:
1909       T           S           U           V
1910      C D M    c        m  s        m  s        m  s        m  s
1911      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
1912      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
1913      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
1914    
1915      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
1916    o GAD:
1917      - generated new common blocks to account for call of
1918        same gad routines with differing traceridentities
1919        (needed to modify tracerIdentity indices in GAD.h)
1920      - generated separate common blocks for case useCubedSphereExchange
1921        (Department of Futurology)
1922      - parameter lists to gmredi_?transport: added tracerIdentity
1923      - added new key indices to tamc.h
1924    o external_fields_load:
1925      - added this routine to TAF list
1926      - needed to make some common blocks global and additional storing
1927        along the same lines as exf package (checkpoint_lev?_directives.h)
1928    o exf:
1929      updated external forcing package
1930      - bug fixes carried over from ecco-branch
1931        (missing OBCS_OPTIONS.h in two routines)
1932      - enable easy to use "no forcing".
1933      - added exf I/O for atmospheric loading
1934      - added exf I/O for runoff data
1935      - transfered scaling between exf <-> MITgcm to exf namelist
1936    o Adding new verification experiment global_with_exf.
1937      This verification experiment is almost identical to the
1938      global_ocean.90x40x15 experiment, except that it uses
1939      the exf (and cal) package instead of the
1940      external_fields_load routine (cf README file).
1941    
1942    checkpoint46m_post
1943    o modified testscript to return -- when there are no lines of "%MON" output
1944    o added new flag "quasiHydrostatic" for QH mode
1945      and new routine quasihydrostaticterms()
1946    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
1947      New routine: mom_u_coriolis_nh()
1948    o fixed sign of non-hydrostatic metric terms in u and v equations.
1949      Depend on correct sign of gravitySign.
1950    o added work.pc* to .cvsignore in aim directories using ifc
1951    o introduced flag for controllin non-hydrostatic metric terms
1952    o removed gravitySign from PARM04
1953    o switched to g77/ifc from pgf77 in aim experiments
1954    
1955    checkpoint46l_post
1956    o made convective adjustment work with pressure coordinates:
1957     - changed the direction of k-loop in convective_adjustment.F for the
1958       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
1959     - adjusted the reference pressure k-index in convective_adjustment.F
1960     - adjusted the convection condition in convect.F (in analogy to
1961       calc_ivdc.F)
1962     - convective_adjustment no longer computes anything on the halos
1963     - removed the warnings about negative salinity from find_rho.F and
1964       find_alpha.F; instead the new routine look_for_neg_salinity, called
1965       at the beginning of find_rho, find_alpha, and find_beta, does a
1966       check of the entire slice, if CPP-option
1967       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
1968    checkpoint46l_pre
1969    
1970    checkpoint46k_post
1971    o fixed the verification/global_ocean.90x40x15 experiment:
1972     - new bathymetry (the world according to A., JMC, and M.)
1973     - new initial fields and forcing fields (*.bin files)
1974     - new POLY3.COEFFS (for the next release one should switch to a full
1975       equation of state: JMD95P or MDJWF)
1976     - fixed several errors and redundancies in the data file
1977     - experiment uses looped cells
1978     - added matlab directory with diagnostic scripts for plotting of output
1979    
1980    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
1981     - read AIM physics parameters from a file (data.aimphys)
1982     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
1983    
1984    checkpoint46j_post
1985    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
1986    o move wVel computation at the end of the time step, in S/R integr_continuity
1987    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
1988    o update timeave pkg for wVel diagnostic.
1989    checkpoint46j_pre
1990    
1991    checkpoint46i_post
1992    o Clean up AIM package (and keep the results unchanged):
1993      include CPP_OPTION and use IMPLICT NONE in all routines ;
1994      declare all the variables _RL ; use _d 0 for all numerical constants.
1995      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
1996    
1997    checkpoint46h_post
1998    o cleaned up the use of rhoNil and rhoConst.
1999      - rhoNil should only appear in the LINEAR equation of state, everywhere
2000        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
2001        and the dynamical equations are all divided by rhoConst
2002    o introduced new parameter rhoConstFresh, a reference density of fresh
2003      water, to remove the fresh water flux's dependence on rhoNil. The default
2004      value is 999.8 kg/m^3
2005    o cleanup up external_forcing.F and external_forcing_surf.F
2006      - can now be used by both OCEANIC and OCEANICP
2007    checkpoint46h_pre
2008    
2009     Added code to convert surface volume flux (fresh water) into
2010     a mass flux when using P coordinates in the ocean (OCEANICP).
2011     Note: It assumes you have set rho0=rhoConst=density of fresh water.
2012    
2013    checkpoint46g_post
2014    o Include a new diagnostic variable phiHydLow for the ocean model
2015      - in z-coordinates, it is the bottom pressure anomaly
2016      - in p-coordinates, it is the sea surface elevation
2017      - in both cases, these variable have global drift, reflecting the mass
2018        drift in z-coordinates and the volume drift in p-coordinates
2019      - included time averaging for phiHydLow, be aware of the drift!
2020    o depth-dependent computation of Bo_surf for pressure coordinates
2021      in the ocean (buoyancyRelation='OCEANICP')
2022      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
2023        Theta, Salinity, and Pressure in the parameter list. This routine is
2024        presently contained in find_rho.F. This routine does not give the
2025        correct density for 'POLY3', which would be a z-dependent reference
2026        density.
2027    o cleaned up find_rho
2028      - removed obsolete 'eqn' from the parameter list.
2029    o added two new verification experiments: gop and goz
2030      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
2031    checkpoint46g_pre
2032    
2033    checkpoint46f_post
2034    o Enable tangent linear (forward mode) gradient checks:
2035      - extended active file handling to g_... files
2036      - added TANGENT_SIMULATION to theSimulationMode
2037      - extended grdchk package accordingly
2038    o added tangent linear setup in verification/carbon/code_ftl
2039    o added adjoint setup in verification/front_relax/code_ad
2040    
2041    checkpoint46e_post
2042    o Added new equation of state -> MDJWF
2043      - EOS of McDougall et al., 2002, JAOT, submitted
2044      - caveat: the equation of state is only valid for a smaller (more
2045        realistic?) range of values than JMD95P/Z and UNESCO
2046      - added masks to the calculation of pressure in store_pressure
2047      - added more check values for density in check_eos (ini_eos.F), some of
2048        the old check values are out of the range of the MDJWF-eos, so don't
2049        expect perfect matches for those
2050    checkpoint46e_pre
2051    
2052    checkpoint46d_post
2053    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
2054      'OCEANICP', also initialised field pressure correctly in ini_eos in the
2055      case of pressure coordinates. eosType='JMD95Z' in
2056      combination with buoyancyRelation='OCEANICP' now causes an error.
2057    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
2058      in find_alpha/beta.
2059    checkpoint46d_pre
2060    
2061    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
2062      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
2063    
2064    checkpoint46c_post
2065    o Changes necessary for ocean in p-coordinates
2066     -  Added new buoyancy relation = 'OCEANICP'
2067     -  Added new parameters = gravitySign (this used to be contained inside
2068        the factor dRdZ which I added when we first switched to R coordinates).
2069     X GM/Redi is not compatible (yet)
2070     X bottom drag and no-slip need to be debugged.
2071    checkpoint46c_pre
2072    
2073    checkpoint46b_post
2074    o Added new equation of state -> JMD95Z and JMD95P
2075      - EOS of Jackett and McDougall, 1995, JAOT
2076      - moved all EOS parameters into EOS.h
2077      - new routines ini_eos.F, store_pressure.F
2078    o Added UNESCO EOS, but not recommended because it requires
2079      in-situ temperature (see JMD95)
2080    o Modified formatting for knudsen2.f in utils/knudsen2 and added
2081      unesco.f to be used with POLY3
2082    checkpoint46b_pre
2083    
2084    checkpoint46a_post
2085    o Added (atmospheric) pressure loading
2086      - new field in FFIELDS.h, etc...
2087      - new cpp flag ATMOSPHERIC_LOADING
2088    o Changed hFacC to _hFacC in calc_phi_hyd.F
2089    o Added SHORTWAVE_HEATING to some files for consistency
2090    checkpoint46a_pre
2091    
2092    checkpoint46
2093    further merges from release1_p5
2094    o new ctrl package
2095      - adopted from ECCO environment to enable optimization
2096      - added Eliassen Palm fluxes to controls
2097    o added Eliassen Palm flux controls to gradient check package
2098    o cost package
2099      - Compatible with new ctrl package
2100      - added Eliassen Palm cost hooks
2101      - modif's of existing cost functions
2102    o Adjoint-related bug fixes in kpp:
2103      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
2104      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
2105    o autodiff package
2106      - flow directives:
2107        + new for S/R do_the_model_io
2108        + enhanced for S/R checkpoint
2109        + new gmredi.flow
2110      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
2111        disable adcommon.h/g_common.h by default.
2112      - fixed problem for adjoint of global_max
2113    o modified verification/carbon/
2114    o New setup for adjoint of global_ocean
2115    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
2116    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
2117    o incorporated hooks for sponge layer code (external_forcing.F)
2118    
2119    checkpoint45d_post
2120    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
2121    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
2122      (affects plume_on_slope "cg2d" output)
2123    o add new parameter deltaTfreesurf for free-surface time stepping
2124    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
2125  o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B  o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
2126  o change phiMin in exp1 (to agree with documentation)  o change phiMin in exp1 (to agree with documentation)
2127  o add new flags:  o add new flags:

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