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revision 1.96 by adcroft, Tue Nov 5 19:15:12 2002 UTC revision 1.604 by mlosch, Tue Feb 7 08:09:34 2006 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 seaice pkg:
8     - add a cpp-flag to include a simple formula for a salinity dependent
9       freezing point of sea water at the surface
10     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
11       meridional stresses are now different (and hopefully correct)
12    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
13       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
14       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
15    o pkg/diagnostics: add options and parameters for regional-statistics
16       diagnostics ; define regions by reading a region-mask from a file
17       (might add other options later)
18    o pkg/bulk_force:
19     - add option and parameters to use AIM surface-flux formulae.
20     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
21       others forcing fields (defined in PARM05, parameter file "data") are loaded
22       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
23     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
24     - use the right EXCH call for uwind,vwind (to work on CS-grid).
25     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
26       and parameters (note: calcWindStress replaces .NOT.readwindstress).
27     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
28    
29    checkpoint58
30    o add "--embed-source" option to genmake2 which, when the supporting
31      tools can be compiled (as determined by genmake2) will turn on the
32      embed_files package which then embeds the entire MITgcm source code
33      (*.[fFhc] + Makefile) used for the build within the executable
34      - requested by CNH but off by default
35      - adds a paltry <9MB to the mitgcmuv executable in most cases
36      - only writes the output when useEMBEDSRC in eedata is true
37    o clean up 3-dim. relaxation codes:
38      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
39      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
40      * Thanks to Tom Haine for testing!
41    
42    checkpoint57z_post
43    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
44      affects output (@ truncation level) of exp. plume_on_slope ; updated.
45    o fix the pickup behavior for obcs in combination with ptracers
46    o fix a bug in ptracers_external_fields_load
47    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
48      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
49    o transfered surface NH pressure to eta field (if exactConserv).
50    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
51         and update lab_sea output.txt file.
52    o completing 3-dim. relaxation code: additional term
53         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
54      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
55      * At compile time, in "EXF_OPTIONS.h" set
56          #define  ALLOW_CLIMTEMP_RELAXATION
57          #define  ALLOW_CLIMSALT_RELAXATION
58      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
59          tauThetaClimRelax3Dim = 15552000.0,
60          tauSaltClimRelax3Dim  = 15552000.0,
61      * 3 cases:
62          1) Use a constant-in-time 3-dim. field
63          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
64          3) Real-time relax. to time-evolving prescribed field
65    o Adding Laplacian-type smoothness constraint on
66      initial and boundary (forcing) controls (ic, bc)
67      * enable at compile-time via
68        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
69      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
70      * Absolute scale somewhat unclear so far
71      * no area weighting was included since no other cost term does so far
72    
73    checkpoint57y_post
74    First step for a NLFS adjoint
75    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
76    o new init. routines for calc_r_star, calc_surf_dr
77    o still need to deal with ini_masks_etc
78    o testreport seemed happy
79    checkpoint57y_pre
80    
81    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
82    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
83    o add new offset feature to offline pkg (plus minor cleanup)
84    o cfc fixes for final year of integration
85    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
86      be in GCHEM_OPTIONS).
87    
88    checkpoint57x_post
89    o fix testreport Pb in multiple test experiment.
90    o cleanup our namelist syntax in verification:
91      - make it more F95 standards compliant (some work still needed)
92      - allows the vast majority of our tests to work with gfortran
93    o Non-Hydrostatic:
94     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
95     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
96    o Allow to apply AB on T,S rather than on AB(gT,gS):
97     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
98     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
99       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
100     - need a "clever" read_pickup to restart from the other AB formulation
101    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
102    o remove some unused variables (reduces number of compiler warnings)
103    o adjoint
104      * Disable useVariableViscosity for adjoint for time being
105        (there are a number of extensive recomputations)
106      * Initialize certain variables needed for adjoint
107    
108    checkpoint57w_post
109    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
110                 fix the singleCpuIO RS version of MDSWRITEFIELD
111       and add a WARNING if using globalFiles=T with multi-processors.
112    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
113      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
114    o tracer advection scheme:
115      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
116       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
117       was not very convenient).
118      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
119       (further tests needed for the implicit DST & Flux-Limiter schemes).
120    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
121      and sRef for convenience, handy, when you want to initialize
122      ptracers in a large domain with a constant non-zero value. Also,
123      untangle ptracers_init.F a little.
124    
125    checkpoint57v_post
126    o change dome exp. to use variable viscosity in side-drag terms.
127    o remove all the files from the cfc_offline test since they are now
128      incorporated into tutorial_cfc_offline which has been producing
129      identical results for a few days of testing
130    o add new parameter: sideDragFactor to enable half-slip-side BC
131      and change side-drag S/R to use viscosity from mom_calc_visc
132      (can switch back by setting sideDragFactor=0.); affects results at
133      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
134       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
135    o vorticity & strain are now computed without masking, to account for
136      no-slip-side BC in variable viscosity calculation ; mask is applied
137      anyway later on, before computing advection/coriolis terms.
138    o modify exp4 to test new obcs support for reading from external files
139      and for passive tracers
140    o fix behavior of ptracers_monitor when monitor output is written to a
141      netcdf-file; still not independent of monitor.F (writes in the same
142      file).
143    o change default value of tRef (put a uniform, meaningful value for ocean
144      & atmos) and initialize sRef (was missing, as Martin mentioned).
145    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
146      to be proportional to enstrophy dissipation length.  Thus,
147       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
148      This is now consistent with Smagorinsky and with the manual.
149    
150    checkpoint57u_post
151    o OBCS and PTRACERS: add open boundary support for passive tracers
152      - either use homogenous (pseudo) v.Neumann conditions or prescribe
153        OB-values from file; this is not different from the way theta and salinity
154        are treated
155      - however, Orlanski-radiation conditions are not supported, and the model
156        will stop if you use pTracers and Orlanski at the same time.
157      - beefed up the rountine obcs_external_fields_load: now only those open
158        boundary values are overwritten with values from files for which there
159        are really files, otherwise the OB-fields remain untouched. This makes
160        it possible to use different OBs at different ends of the domain (as
161        with EXF)
162    o reduce number of exch calls in shap_filt (s2).
163    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
164      truncation level) 4/5 MLAdjust test results (11&12 digits match).
165    
166    checkpoint57t_post
167    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
168    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
169      same truncation, independent of the face number: affects affects several
170      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
171    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
172      note that biharmonic viscosity + no-slip was not tested in any experiment.
173    o fix bug in non-linear free-surf side-drag ; generate new output for
174      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
175    o make mnc honor the writeBinaryPrec flag for most kinds of output
176    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
177    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
178      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
179    o add brackets in multi-terms sum to get same truncation, independent of
180      the face number (manage to get exactly same value of gU,gV at the cs-edge)
181      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
182    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
183      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
184      a maximum grid-scale Reynolds number.  Also, changes all length calculations
185      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
186      Suggested values of viscosity parameters found in mom_calc_visc.
187      Many new viscosity diagnostics available.
188    
189    checkpoint57s_post
190    o Add clearing-house for viscosity calculations, mom_calc_visc and
191      correct numerous bugs in LeithD and Smagorinsky discretizations.  
192      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
193      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
194      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
195      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
196      The Strain-Tension form is now called with useStrainTensonVisc=.true.
197      ViscAhStrain and viscAhTension are now retired.
198    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
199    o In response to JMC's bug report, genmake2 now ignores any soft-links
200      that it finds in the *current* directory when searching for files.
201      Soft-links found in any other source directories will still work as
202      they did before.
203    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
204      a C routine to unlimit the stack size
205    o mnc-ify pkg/aim snapshot vars
206    o mnc-ify pkg/land as requested by Daniel
207    o various changes to mnc including:
208      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
209      - output can now be grouped so that all files within a group
210          change the ITER portion of their names in lock-step together
211      - can now read ("global") PER-FACE (in addition to PER-TILE) files
212          and works with both EXCH1 and EXCH2 (but needs more testing)
213      - writing works for all verification test cases w/ g77 on Linux
214    
215    checkpoint57r_post
216    o make MNC variable initialization happen earlier
217    o add diagnostics for (almost) each term of the momentum Eq.
218    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
219    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
220    o remove MINIMAL_TAVE_OUTPUT option ;
221      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
222    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
223      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
224    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
225    o add time-dependent SST, SSS control
226    o cost terms in ecco/ modularized (new cost_generic.F)
227    o cost_averages routines are modularized (new cost_averagesgeneric.F)
228    o new infrastructure for seaice model vs. obs misfits in seaice/
229      * driver from the_main_loop.F is seaice_cost_driver.F
230      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
231      * gradient check in Exp. 6a of natl_box_adjoint/
232    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
233      (see README file)
234    
235    checkpoint57q_post
236    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
237    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
238      - bug was reported by Jean-Michel and Ian Fenty
239    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
240      update exp. cpl_aim+ocn output.
241    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
242      Needed for high-res. runs with large global files
243      to be able to limit tapelev size
244    o Changed some tests for adjoint:
245      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
246      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
247      * global_ocean.90x40x15/ back to default 3-level checkpointing
248    o Modifications to enable scripted COMMON to MODULE conversion
249      * verification/OpenAD/code/ has necessary scripts and description;
250      * converts, compiles and runs successfully;
251    
252    checkpoint57p_post
253    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
254    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
255      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
256    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
257    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
258      (was already the case for dissipation with mom_vecinv,
259       and also the case for grad.PhiHyd when staggered-timeStep)
260      This will allow to put dissipation out-off the AB time-stepping.
261     Unfortunately, affects truncation error. Update output of exp. that "fails"
262      (cg2d matching number) and leave the others for later: front_relax(10),
263      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
264      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
265    
266    checkpoint57o_post
267    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
268      (2) its ready to be documented during the 20050801 DocFest
269    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
270      for ideal_2D_oce and lab_sea on linux_ia32_g77
271    o set to #undef CTRL_SET_OLD_MAXCVARS_30
272      in global1x1_tot/code_seaice_adj to access indices 32, 33
273      (worth another tag)
274    
275    checkpoint57n_post
276    o adding precip control xx_precip 32
277    o adding swflux control xx_swflux 33
278    o Replacing 10 forcing penalty cost routines by 1 generic.
279    o Implementing partitioning in time-mean and variable adjustment
280      for atmos. state.
281    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
282    o in natl_box_adjoint:
283      * updated exp 1 to 10
284        (but does not have time-mean vs. variable split results yet)
285    o updated global1x1/*_seaice_adj/
286      to incorporate latest changes
287    o enable useSingleCpuIO for mdsio vector routines
288      (applies in particular to tapelev I/O)
289    o removed inefficient K-loop in all active_file*control*.F
290    
291    checkpoint57m_post
292    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
293      and advect_cs (use EXCH-2 and standard cs-32 grid files).
294    o pkg/exch2: filling of face-corner halo regions is optional
295      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
296    
297    checkpoint57l_post
298     tag before updating tutorials (pre-release-2)
299    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
300       for output and interpolation of input fields onto model grid)
301    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
302       Affects results of exp. rotating_tank ; update output.txt.
303    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
304          and taking the square quantity and/or using a fraction-weight field.
305    o fix aim_diagnostics_init.F mate numbers.
306    o add mnc output capability to diagnostics/diagstat and update
307      our cvsignore files for the ACSII output generated
308    
309    checkpoint57k_post
310    o lab_sea now uses diagnostics package and provides a suite of
311      new EXF diagnostics output.
312    
313    checkpoint57j_post
314    o exf
315      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
316        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
317        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
318      * extended diagnostics output
319        - now includes all EXF variables
320        - hs, hl moved to common block
321        - separate S/R for diagnostics, called after ctrl vector is added
322        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
323        - EXFqnet contains true Qnet (i.e. includes qsw)
324      * updated verif. lab_sea, global_with_exf
325      * Rearranging hflux (exf_mapfields -> exf_getforcing)
326        to ensure that diagnostics sees a true EXFqnet
327    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
328    o diagnostics pkg: change pointers so that 1 diagnostic can be used
329      several times with different frequencies.
330    o mnc-ify the thsice package as requested by Daniel Enderton
331      - the monitor--MNC output needs work
332      - many attributes need to be added (most are currently blank)
333    o mnc-ify theaim_v23 package as requested by Daniel Enderton
334      - many attributes need to be added (most are currently blank)
335    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
336    o add Sadourny like discretization to the 4th.O vorticity advection scheme
337    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
338      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
339         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
340    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
341     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
342    
343    checkpoint57i_post
344    o Diagnostics package was changed: diagnostic allocation is now deactivated
345      by setting an empty file name in the namelist (used to be by setting 0 frequency)
346    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
347      add 1rst Order upwind vertical Shear.
348    o add a quick fix for A/B checkpointing in OFFLINE mode
349    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
350      end-run around the C/Fortran linking horror in eesup/src/timers.F
351    o added pkg/runclock: allows user to terminate run based on wall clock
352    o added non-hydrostatic scaling parameter: nh_am2
353    o pkg/my82: futile attempt to make results compiler-independent by adding
354      some "_d 0", etc. no effect.
355    o for mnc output, fill the 'T' coordinate var with myTime and create a
356      separate 'iter' variable for iteration count
357    o pkg/diagnostics:
358      add new capability: output of Global/Regional & per-level statistics ;
359      tested against monitor output (including land & thSIce) on various exp.
360    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
361    
362    checkpoint57h_done
363      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
364      data.diagnostics, data.gchem, data.ptracers) is done.
365    
366    o pkg/diagnostics: prepare for Global/Regional statistics.
367      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
368    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
369      and rename it: DIFFERENT_MULTIPLE
370    
371    checkpoint57h_post
372    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
373    o pkg/diagnostics: change output frequency, now in seconds (instead
374      of Nb of iterations). This requires to change data.diagnostics.
375    checkpoint57h_pre
376    
377    o in mnc, let the user create the output dir if both mnc_outdir_date
378      and mnc_outdir_num are false
379    o add fflags() to pkg/diagnostics which allows one to specify, on a
380      per-file basis, the file precision [default behavior is unchanged]
381    o added diagnostics to pkg/kpp, including computation of mixed layer
382      depth based on a temperature/density criterion
383    o updated verification/natl_box to test the new pkg/kpp diagnostics
384    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
385    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
386    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
387      not mnc -- this mistake was found by JMC and is now corrected
388    
389    checkpoint57g_post
390    o add Adams-Bashforth 3rd Order time stepping:
391      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
392      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
393    checkpoint57g_pre
394    
395    o make lambda[Theta,Salt]ClimRelax spatially varying
396      (default remains spatially uniform constant based on tau)
397    o added new control variables
398      * init. uVel, vVel, etanN
399      * lambda[Theta,Salt]ClimRelax
400    o separate masks used for ctrl_pack/unpack 'from write_grid' output
401      (suggested by G. Forget)
402    
403    checkpoint57f_post
404    o add parameter "baseTime" = model base time = time at iteration zero
405      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
406      account for baseTime shift
407    o move Coriolis arrays from PARAMS.h to GRID.h
408    checkpoint57f_pre
409    
410    o mnc-ifying the seaice package
411    o introduced an alternative length scale calculation for use in the limiting
412      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
413    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
414    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
415      as well as grad(vort3).  Made it compatible with both approximate form
416      for the cubed sphere and full form of these gradients.  Added flag
417      useFullLeith to select between approximate and full form.  
418    o add "d0" in getcon.F to reduce differences between compilers/platforms
419      update output.txt of exp. fizhi-gridalt-hs
420    o change port_rand funtion to allow to set the seed.
421    o fix obscure MNC bug involving conversion between reals and integers
422      - it caused no problems with certain (eg. gcc, ifc) compilers but the
423        new version is now more standards-compliant
424    o adjoint-related modifications
425      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
426      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
427      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
428    
429    checkpoint57e_post
430    o Adding eddy stress controls a la Ferreira et al.
431    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
432    
433    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
434      update output.txt of exp. fizhi-gridalt-hs
435    o add more "Z" dimensions and associated coordinate vars to MNC
436    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
437    o parameter calendarDumps: when set, approximate months (30-31 days) and years
438      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
439      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
440      months and years.  Requires pkg/cal.
441    o diagnostics: add pickup functionality
442      - off by default for backwards compatibility
443      - current version only uses MDSIO -- MNC will be added
444    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
445    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
446    
447    checkpoint57d_post
448    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
449    o modify verification/ideal_2D_oce so that it tests the creation of mnc
450      output from the diagnostics package
451    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
452    o make genmake2 more portable by using ".$FS" instead of ".f" for more
453      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
454    o add coordinate variables to the MNC output from the diagnostics package
455    o change MNC-flags default value: true when useMNC=TRUE
456    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
457      the ability (off by default) to read the grid information using MNC
458    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
459    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
460    o do snap-shot diagnostics at the middle of the time-interval (instead of
461      at the end).
462    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
463      new test for AIM with thSIce + slab-ocean
464    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
465    o move state variable diagnostics to the beginning of the time step ;
466      (note: still needs some work specially for snap-shot diagnostics)
467      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
468    
469    checkpoint57c_post
470    o Change testing option (-ieee) to get closer agreement between g77 & ifort
471    o generate new output.txt files on faulks with g77 & the new -ieee option
472    checkpoint57c_pre
473    
474    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
475      update output.txt of exp. global_ocean.90x40x15
476    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
477      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
478    o add saltFlux(+File) forcing capability with periodicExternalForcing
479    o allow to use pkg diagnostics for GM-Redi & ThSIce output
480    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
481    o improvements for the MNC output from DIAGNOSTICS:
482      - correct handling of the unlimitied dimension
483      - all dims now have associated coordinate variables
484      - variables located at U, V, and Corner ("Z") points are now written
485        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
486        *all* data points are output
487    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
488    o added pkg/seaice/seaice_monitor.F
489    o mdsio_readfield.F can now read files visible only to master MPI process.
490    o pkg/seaice: some test code for ice-modified ocean stress
491    o exf_getffields interpolation defaults to bilinear for all scalar forcing
492      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
493      spurious negative numbers for precipitation and humidity.  Will cause
494      some small numerical differences for integrations using pkg/exf/exf_interp.F.
495    o pkg/ctrl/
496      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
497        May be enabled via doPackDiag
498      *  introduce z-scaling of
499         + gradient (doZscalePack) and
500         + control (doZscaleUnpack)
501    o pkg/mdsio/
502      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
503      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
504    
505    checkpoint57b_post
506    o simplify options in diagnostics_fill arguments (remove weird combinations)
507    o fix MNC coordinate variables so that they now contain per-face index
508      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
509      general, EXCH2 grids are only aligned to a "local" coordinate system
510    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
511    o Implement instantaneous output within pkg diagnostics:
512      setting a negative frequency in data.diagnostics produces
513     "snap-shot" output (as opposed to time-average if freq > 0)
514    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
515      NOTE: change ptracer diagnostics name: use 2 characters to work with
516            more than 9 tracers. Add also diagnostics of advect & diffus flux.
517    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
518      becomes the coordinate variable for the 'T' dimension
519    o add CF-style coordinate variables to MNC
520      - just a first cut:  numbers are meaningless on the cubesphere and
521        missing along the T axis but otherwise it works!
522    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
523    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
524    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
525      this is based directly on what the model compute, so that the content of
526      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
527    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
528    o clean up build options files for SunOS, in particular
529      - remove -traditional from xmakedepend
530      - change -xarch=v9 to -xarch=native for f77
531      - restore use of make (not gmake)
532      - add CC=gcc if using g77
533    o changes per discussion of AM, JMC, & EH3 today:
534      - move redundant "grid" variables out of "state" -- in preparation of
535        creating proper CF-style coordinate variables and in recognition
536        that any/all grid variables can be easily copied (eg. w/NCO) from
537        the grid files into any of the other NetCDF files
538      - *always* output grid variables with MDSIO (this will eventually be
539        changed)
540      - output MNC grid file if useMNC is true
541    o every instance of _END_MASTER() has been found and replaced with
542      _END_MASTER( myThid ) in order to satisfy certain picky Sun
543      preprocessors
544    o re-arrange diagnostics pkg initialisation:
545     - allow each package to extend the available diagnostics list
546     - add some checking and fix small problems (multi-threaded, ...)
547     - new S/R diagnostics_fill (replace fill_diagnostics):
548       look through the short list of active diag. (instead of the long list)
549       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
550    
551    checkpoint57a_post
552    o this set of changes restores TAMC compatibility
553      tested for global_ocean.90x40x15 adjoint on trough
554      (what a pain)
555    
556    checkpoint57a_pre
557    o some modifs in tools/build_options for sunos
558    o call ctrl_pack for ctrl at end for optimcycle=0
559    
560    checkpoint57
561    o add horizontal bi-harmonic viscosity for vertical velocity
562      - new parameter viscA4W (defaults to viscA4)
563      - affects only non-hydrostatic code
564      - to be done: no-slip lateral boundary conditions
565    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
566    o implement Implicit Vertical advection for pTracers
567    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
568      (implemented also for implicit vertical diffusion & advection)
569    o OBCS: extend application of tracer open boundary conditions
570      to a strip beyond the boundary of width Olx/Oly
571    o add call monitor to TAF set of required calls (flow directives)
572      and include in natl_box_adjoint
573    o untangle a few ifdefs related to cost, ctrl, autodiff
574      untangel a few ALLOW_ECCO_OPTIMIZATION
575    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
576      (theta2, salt2 in ecco_cost_weights)
577    
578    checkpoint56c_post
579    o OBCS as control variables
580      - update ctrl_ad_diff.list, obcs_ad_diff.list
581      - remove balance of obcs controls from default
582      - fix index bug nobcs in ctrl_init
583      - fix dummy fields filen in ctrl_pack
584      - add dummy weights for obcs
585    o lsopt: comment out fort.94 output
586    o optim:
587      - remove unnecessary header files
588      - adjusted namelists
589      - add xerbla.F to Makefile
590    o exf:
591      - multiple modifications of exf_check_range
592      - unit change in exf_init_runoff from [m/year] to [m/s]
593    o mdsio:
594      - i/o-vector change debugLevel from debLevA to debLevB
595    
596    checkpoint56b_post
597    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
598      is called from DO_THE_MODEL_IO
599      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
600      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
601      - clean up PTRACERS_WRITE_TIMEAVE a little
602    o add another verification experiment that tests both the cfc-pkg and
603      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
604      reactive tendencies treated inline with regular timestepping
605    o testreport previously did a lousy job of comparing small numbers, so
606      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
607      implemented in the little c-progam tmp_cmpnum.c which is embedded in
608      testreport.
609    o ptracers_monitor: bug fix for MPI
610    
611    checkpoint56a_post
612    o GCHEM: finish reorganizating the package
613      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
614        (introduces another 3D-array for each passive tracer, but only if
615        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
616        gchemTendency is not needed because the timestep is done separately)
617      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
618      - GCHEM is now---more or less cleanly---separate from PTRACERS
619      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
620        so clear to me how that should be done in a general way.
621    o CFC: improve formatting of output in CFC_ATMOS
622    o PTRACERS:
623      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
624        that ALL experiments with ptracers enable can be checked. This makes
625        GCHEM_MONITOR obsolete.
626      - include a runtime parameter PTRACERS_monitorFreq that defaults to
627        monitorFreq
628      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
629    o add PTRACERS (PTR0[1-5]) to testreport output
630    o exf_check_range:
631      * default changed to .TRUE.
632      * will check values for niter0 if debLevA, every timestep if debLevB
633      * STOP in exf_check_range if 'out of range'
634      * range chosen generous to allow for potential extema
635      TBD: a version with stricter range
636           permitted range would be runtime parameters
637    o GMredi:
638      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
639      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
640      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
641    o GCHEM:
642      - move call to GCHEM_FORCING_SEP, so that it is now called before
643        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
644      - introduced a useGCHEM runtime flag and applied it everywhere.
645      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
646        this flag is now only visible within GCHEM-pkg routines.
647      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
648        be replaced by a 3D array that is computed before thermodynamics; for
649        this, the tracer ID iTracer had to be included into the parameter list
650        of ptracers_forcing
651      - set up forward_step to call gchem_forcing, that will replace
652        gchem_forcing_int in ptracers_forcing
653      - cleaning up
654    o small cleaning of exch2: remove files that are also in eesupp/src
655    
656    checkpoint56
657    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
658    o mnc: cleanup "full" files--fixes out-of-memory problem
659    o ECCO-GODAE
660      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
661      * fully merged and updated from SIO code
662        windstress sign change affects
663        - exf_inscal_[u/v]stress
664        - sign of xx_tau[u/v] adjustments
665        - signs in cost_scat
666      * ctrl_get_gen: avoid update of tau[u/v] for first few days
667      * natl_box_adjoint updated and compressed
668      * 2-level checkpoint switch added
669        (tested in EXP. 1 of natl_box_adjoint)
670      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
671    o SVD
672      * first complete, non-hacked version for SVD calculations
673      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
674        performed via direct access files admtlm_vector.it????
675        (via ctrl_[un]pack)
676      * optimcycle is used for ARPACK iteration counter
677        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
678      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
679        and add linear transforms where necessary
680      * controls are initial/final SST, SSS (can be extended; need to check
681        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
682    o mdsio: filename info to both stderr, stdout
683    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
684      from sign change
685    
686    checkpoint55j_post
687    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
688      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
689    o add consistent build directories and .cvsignore files to verification
690    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
691    o make all subroutines 30 or less characters in length for certain older
692      compilers to work (a thorough search only turns up two routines in
693      pkg/ptracers)
694    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
695      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
696    
697    checkpoint55i_post
698    o change arrays for total vertical diffusivity (2.D if explicit,
699      3.D if implicit) ; each ptracer uses its own background value.
700    o added mnc/NetCDF output capability to ocn_compon_interf
701      - added bits to verification/cpl_aim+ocn so that it can run on
702        ITRDA and other clusters without the mpirun "-wd" option
703    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
704      configuration
705    o give MNC the ability to create additional files rather than
706      exceeding a specified file size limit "MNC_MAX_FILESIZE"
707      - the default is just less than 2GB which is a practical limit
708        on many systems
709    o Compute the non-local term using either KPP vertical diffusivity (=default)
710       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
711    
712    checkpoint55h_post
713    o add verification test "vermix"
714    o remove all the *_ioinc flags and replace with the single global
715      outputTypesInclusive flag
716    o allow to set a vertical profile of vertical diffusivity for T & S
717    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
718    o useMNC moved from data.mnc to data.pkg
719    
720    checkpoint55g_post
721    o Renaming carbon AD experiments to comply with testreport conventions
722    o Updating adjoint of Held-Suarez hs94.1x64x5
723    o Fixing directives for non-ECCO forward_step, after ECCO directives
724      have been fixed to avoid recomp. of do_oceanic_phys
725      Works well for global_ocean.90x40x15,
726      but recomp. issue remains for carbon
727    o Updating adjoint output for natl_box_adjoint after
728      pkg/ecco has been modified (see taga c55d_post)
729    
730    checkpoint55f_post
731    o rename to timeave_init_fixed
732    
733    checkpoint55e_post
734    o some delicate re-shuffle of store directives to avoid one
735      extra call of do_oceanic_physics
736      affects ecco_the_main_loop.F, do_oceanic_physics.F
737      checkpoint_lev1_directives.h
738    o NB: this may break global_ocean adjoint temporarily,
739      but it is clear how to fix it. Will do later, need this now.
740    
741    checkpoint55d_post
742    o ECCO specific cost function terms (up-to-date with 1x1 runs)
743    o ecco_cost_weights is modified to 1x1 runs
744    o modifs to allow observations to be read in as
745      single file or yearly files
746    o enable to read exf forcing fields as either
747      single file or yearly files (flag useExfYearlyFields)
748    checkpoint55d_pre
749    
750    o switch between 2-level and 3-level checkpointing
751    o add ability of MNC to write local and "partial" (eg. 2D slices where
752      the full 3D field is never actually stored) arrays to NetCDF files
753      with the correct (that is, the complete multi-dimensional) set of
754      array indicies
755      - used in mom_vecinv() to write the diagFreq output
756      - tested (demonstrated) in verification/aim.5l_cs
757    o further mnc-ification
758      - add verification/lab_sea to the list with mnc setups
759      - fix undefined mnc v-names in cd_code
760      - add kpp to mnc output (both snapshot and timeave)
761    o non-hydrostatic code
762      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
763        in calc_gw.F
764      - defaults to viscAh
765      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
766        friction or Leith) in non-hydrostatic mode, as long as there is
767        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
768    o pkg/cost
769      extend simple cost functions to treat time mean quantities
770      (T,U,V) via cost_accumulate_state from cost_tile
771    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
772        be 2 times larger than the minimum size the advection scheme requires.
773        now get a perfect conservation of salt in advect_cs test-exp (updated)
774    o GGL90 (Gaspar's TKE mixed layer)
775      - add horizontal diffusion of TKE, requires exchanges in
776        do_fields_blocking_exchanges, horizontal diffusivity is zero by
777        default. In OPA there is no horizontal diffusion of TKE but the
778        mixing coefficients are computed from a horizontal average of TKE of
779        6 points or so. I think that diffusion has a little more physical
780        justification.
781      - clean up ggl90_calc in the hope of reducing memory usage (this hope
782        was in vain)
783      - mask tke-variable in ggl90_init
784    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
785    o fix biharmonic diffusion on CS-grid.
786    o more obcs stuff
787      - added obcs_external_fields_load as an alternative to the EXF-pkg option
788        for reading boundary values. This routine is called from
789        obcs_prescribe_read
790      - updated obcs_check
791      - changed sponge layer relaxation parameter units for days to seconds
792      - turned off sponge layer by default
793      - changed argument list of OBCS_CALC to myTime+deltaTclock
794      - fixed about 35 bugs in obcs_external_fields_load
795    
796    checkpoint55c_post
797    o obcs stuff
798      - new runtime flags useOBCSprescribe, useOBCSbalance
799      - re-arranged obcs_calc
800      - moved exf_getobcs to obcs_prescibe_read
801        obcs_prescibe_read is called after ORLANSKI stuff
802        and independent of it (executable can contain all).
803      - updated obcs_check
804      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
805        These may be necessary only if tangential velocities are
806        prescribed at OB, not sure, needs testing.
807    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
808      which simplifies the calls and passes the ifc check-bounds test
809    
810    checkpoint55b_post
811    o add a 2D scalar, Z location, exchange_2 routine.
812    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
813      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
814      affects advect_cs results (for the wrong reason): update output.txt
815    o use a more standard discretization for biharmonic viscosity ;
816     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
817      affects results of dome set-up: update output.txt
818    o fix gad_advection.F (CubedSphere part), back to version 1.23
819    o fix bug in mom_vi_del2uv.F (CubedSphere part).
820    
821    checkpoint55a_post
822    o merged code to
823      * prescribe/read time-dependent open boundaries
824        (works in conjunction with exf, cal)
825      * sponge layer code for open boundaries
826      * each boundary N/S/E/W now has its own CPP option
827        (healthy for the adjoint)
828    
829    checkpoint55
830    o up-to-date adjoint of previous breaks
831      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
832      - global_ocean_ebm: adjoint still needs fix (TLM ok)
833      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
834      - carbon: * remove tr1-related adjoint verification
835                * add ptracer as control variable
836    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
837      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
838    
839    checkpoint54f_post
840    o in verification/carbin/ remove experiment related to
841      ALLOW_PASSIVE_TRACER (array tr1 etc)
842      code_ad/ input_ad/ results_ad
843    
844    o add two new packages
845      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
846        + subject to optimization (memory)
847      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
848        + subject to reordering (many GOTOs in the original code)
849        + so far opps is called for every (i,j) point, and then operates in
850          the vertical; one may want to reorder the scheme in order operate in
851          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
852          fields)
853    o overhaul of IO so that we now have flags for MDSIO and/or MNC
854      - all verification tests compile and run with linux_ia32_g77
855      - defaults are compatible with current input files--nothing
856        should change if you were not previously using MNC
857      - MNC output has been added in numerous places (eg. timeave)
858        but there are still a few writes not yet do-able with MNC
859        (this is in progress)
860      - flags now allow for either/or/both use of MDSIO and MNC and
861        documentation will soon follow
862      - numerous small formatting cleanups for ProTeX
863    o add version info (via BUILD_INFO.h) to MNC and stdout
864    
865    checkpoint54e_post
866    o add two new packages
867      - pp81 (Packanowski and Philander, 1981), Richardson number and
868        stratification dependent mixing
869      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
870      - these scheme operate in a similar manner as KPP (without ghat, of
871        course), however there is only one diffusivity that is used for both
872        temperature and salinity (and passive tracers)ç
873    o add offline package
874    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
875      provided by Stephanie Dutkiewicz
876    o genmake2: add ability to search for C compilers and cleanup test output
877      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
878    
879    checkpoint54d_post
880    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
881    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
882      leading to additional shift by 5 days each year of integration
883       (i.e. leading to considerable offset over the years)
884    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
885    o start with no AB and no initial filtering (staggerTimeStep):
886      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
887    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
888      (external loading & cpl import/export stay in forward_step.F)
889    o update coupling interface to work with new staggerTimeStep
890    o change MDSIO ptracers_pickup.
891    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
892    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
893    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
894    
895    checkpoint54c_post
896    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
897      this affects (truncation error) output.txt of test-exp:
898       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
899    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
900    o change Qnet to always be the net heat flux, (+upward).
901      affects (truncation error) output of natl_box exp.: updated
902    o define the max number of passive tracers in PTRACERS_SIZE.h
903    o start to test mnc routinely in exp0
904    o add sea-ice loading (sIceLoad) as a new forcing field.
905    
906    checkpoint54b_post
907    o add testreport "-j JOBS" option for parallel builds (tested and pretty
908       impressive on Altix and Opteron systems)
909    o diagnostics can now write NetCDF files through the mnc package
910    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
911    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
912    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
913      affects (truncation error) output of lab_sea & natl_box exp.: updated
914    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
915    
916    checkpoint54a_post
917    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
918    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
919    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
920    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
921      + internal_wave (shift in writing cg2d_ini_res)
922    checkpoint54a_pre
923    
924    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
925      - modified verification/lab_sea and natl_box_adjoint accordingly
926    
927    checkpoint54
928    checkpoint53g_post
929    o prepare splitting of thermodynamics: store convect.counter in common block
930    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
931      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
932    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
933    o new parameter "nShapS": allow to treat differently S from T (nShapT)
934    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
935    o restore adjointability
936    
937    checkpoint53f_post
938    o modifications that affect AIM experiment results (update output.txt):
939      - no advection of S at top interface Nr (pkg/generic_advdiff)
940      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
941    o AIM pkg:
942      - include stability function into surf.Flux derivative relative to Tsurf
943      - calculate clear-sky radiation & surface temp. change (for diagnostics)
944    
945    checkpoint53e_post
946    o merged cylindrical coord configuration
947    o added rotating_tank experiment
948    checkpoint53e_pre
949    
950    checkpoint53d_post
951    o faulks upgraded: re-generate output.txt that have changed:
952       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
953    o Added Bryan and Lewis, 1979, vertical diffusivity profile
954    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
955    o added Sadourny discretization of Coriolis
956      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
957      - re-enabled use of omega3 (useAbsVorticity)
958    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
959      vector-invariant equations
960      - note: does *NOT* yet use same variable visc. for no-slip BC's.
961    o recoded the lateral boundary conditions for non-hydrostatic w, this time
962      hopefully without new bugs
963      - still to do: biharmonic friction for non-hydrostatic w
964    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
965    o regenerated output for global_ocean_ebm (using -ieee)
966    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
967      of mom_common/
968      - simple re-arrangement of instructions within computing loop
969    checkpoint53d_pre
970    
971    checkpoint53c_post
972    o new version of coupler for AIM+thSIce and Ocean models
973     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
974     - land: change Evaporation of snow
975     - aim with thSIce: fix bug in snow-precip.
976    o changes to calc_gw.F
977     - bug fix for w^2 term near the bottom boundary
978     - (hopefully) improve the lateral slip boundary condtions for use with
979        partial/looped cells
980      - because the bug fix changes two verification experiments anyway (exp5
981        and plume on slope), change the lateral boundary condition from half slip
982        to the value of no_slip_sides
983    o ebm package wasnt quite up to the parallel task. Fixed that.
984    o Adjoint of EBM package + verification
985      * TLM OK
986      * ADM not sufficient accuracy yet (needs further testing)
987    
988    checkpoint53b_post
989    o Commiting new energy balance model to repository
990      * package is pkg/ebm
991      * verif. is verification/global_ocean_ebm
992      * references are in ebm_driver.F
993    C      * X. Wang, P. Stone and J. Marotzke, 1999:
994    C        Global thermohaline circulation. Part I:
995    C        Sensitivity to atmospheric moisture transport.
996    C        J. Climate 12(1), 71-82
997    C      * X. Wang, P. Stone and J. Marotzke, 1999:
998    C        Global thermohaline circulation. Part II:
999    C        Sensitivity with interactive transport.
1000    C        J. Climate 12(1), 83-91
1001    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
1002    C        Destabilization of the thermohaline circulation
1003    C        by atmospheric eddy transports.
1004    C        J. Climate 7(12), 1870-1882
1005    o Will need long integration testing.
1006    checkpoint53b_pre
1007    
1008    o created pkg/mom_common in preparation for variable viscosity code
1009    o renamed and split ini_mnc_io
1010    o pkg/land: only liquid water can diffuse or run-off
1011    o AIM using land: soil wetness availability account for snow
1012    o added printMapIncludesZeros to EEPARMS namelist
1013    
1014    checkpoint53a_post
1015    o restore TAMC compatiility for exf_constants.h
1016      (no usage of _d in .h)
1017    o Additional storing in KPP in an attempt to fix
1018      TAMC problem with adjoint of KPP code.
1019      (no success...)
1020      Identical code works fine with TAF.
1021    o Fixed verification/natl_box_adjoint experiments.
1022      Initial conditions for Experiments 4 and 5 are now
1023      set to "SEAICE_initialHEFF=0", which is more reasonable,
1024      and hence gives results closer to that of Experiment 2.
1025      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
1026    
1027    checkpoint53
1028    o stable checkpoint with up to date adjoint
1029      TLM tests only run for 1st grdchk at the moment. Its unclear if
1030      this is a code problem or a problem with resetting code for g_
1031      variables that is being autogenerated wrong.
1032      Otherwise:
1033       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
1034       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
1035         are both still in chaos following their security messes.
1036    
1037    checkpoint52n_post
1038    o various build (mostly genmake2) changes including:
1039      - ability to build/run more easily within Cygwin and MacOS X
1040      - more complicated Makefiles with a stronger dependence on Gnu Make
1041    o pkg/seaice modifications
1042      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
1043        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
1044        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
1045      - changed proxy for geostrophic velocity and updated
1046        verification/lab_sea/results/* accordingly
1047      - removed ADI dynamic solver from pkg/seaice
1048      - replaced all occurrences of 1/CSTICE or 1/CSUICE
1049        they caused a segmentation fault under certain circumstances
1050      - removed unused field WATR
1051    o bug fix in exf-package:
1052      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
1053         now reflect that.
1054    o small fixes in the cal-package:
1055      - set reference date to first of January for the 'model'-calendar
1056      - failing of cal_CheckDate in cal_FullDate now actually results in a
1057        warning
1058    o small modifications in exf-package to increase flexibility:
1059      - change climtempfreeze from a constant to a runtime parameter that
1060        is specified in data.exf_clim (default = -1.9)
1061      - introduce runtime parameter windstressmax (default = 2.0) that is
1062        specified in data.exf
1063    o fix in pkg/thsice:
1064      - update Evap (Tsf changes) to be consistent with Latent heat flux
1065      - maintain snow precipitation unchanged (even if Tsf >=0).
1066     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
1067    
1068    checkpoint52m_post
1069    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
1070      this does not change any of the results, because myIter=0 in swfrac always
1071      lead to jwtype=2 (the default anyway), but the call makes little sense
1072      as a default
1073    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
1074    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
1075      atmospheric model (AIM) to use it ; add a "slab ocean" component.
1076    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
1077    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
1078    o extending useSingleCpuIO option to work with new exch2 I/O format
1079      - old-style, missing-tile I/O is still accessible by defining CPP
1080        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
1081    o monitor package can write to NetCDF files and/or STDOUT
1082    o fix re-definition bug in MNC_GRID_INIT_ALL()
1083    o doc/api_reference added
1084      - a framework for building an API Reference Manual using all
1085        the "protex" comments embedded in the code
1086      - see pkg/generic_advdiff, pkg/mnc for examples
1087    o MNC:
1088      - make myThid the last argument for all subroutines
1089      - new default for the grid files: NO halos
1090      - add useMNC and other run-time flags
1091      - separate per-file-group handling of the unlimited dimension
1092      - early initialization of MNC w/ flags read at the eeboot stage
1093        and lookup tables set in initialize_fixed
1094      - write all MNC output to a freshly-created directory
1095    o thermodynamics sea-ice (thsice) is now tested with testreport.
1096    o test exp. advect_cs: use the standard cs32 grid ; update output.
1097    o Added functionality to grdchk:
1098      pick global i,j,k position (or nearest wet) where to perform check.
1099    
1100    checkpoint52l_post
1101    o new land formulation:
1102      a) use ground enthalpy as prognostic variable to ensure exact
1103         energy conservation.
1104      b) account for water temperature and for latent heat of freezing
1105         in all processes (rain, run-off, ground storage)
1106      c) compute surface and ground temperature implicitly.
1107    o aim_v23 modification for new land model:
1108      a) Treat separately land / ocean / sea-ice surface fluxes
1109         to allow implicit computation of land & sea-ice surface temp.
1110      b) add snow precipitation.
1111    checkpoint52l_pre
1112    
1113    o fix problem (when 1 tile is empty) in min/max monitor.
1114    o fix bug in timeAve (u,vZetatave in common block)
1115    o no restoring terms under ice for pkg/seaice
1116    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
1117    o bug fix for pkg/seaice pickups
1118    o change MNC call locations and add coordinate attributes
1119    o mask vorticity at the corner ; affects global_ocean.cs output
1120    o fix ini_curvilinear_grid ; test CS experiments with mpi
1121    o aim.5l_cs: modify sea-ice fraction input file ; update output
1122    o exf: Adding simple range check routine for exf fields after read
1123    
1124    checkpoint52k_post
1125    o removed top-level directory "diags"
1126      - we migrated these functions to pkg/timeave a long time ago
1127    o fixed bug introduced in pkg/monitor
1128    o accuracy ctrlprec = 32 insuffient for gradient checks using
1129      averaged fields (I/O via cost_averages)
1130      -> use ctrl.h in active_file*.F to control I/O precision.
1131    o paramter list of CALL ADTHE_MAIN_LOOP
1132    o added initial do_the_model_io to ecco
1133    o set all ...Freq to zero after cost_final
1134      taveFreq, dumpFreq, pChkptFreq
1135    o MAIN and ECCO differentiability restored
1136    
1137    checkpoint52j_post
1138    o fix nchklev in tamc.h for global_ocean...
1139    o Bringing flow and store directives up-to-date
1140    o Really weird thing!
1141      call do_the_model_io from the_main_loop with parameters
1142      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
1143      TAF places a faulty re-call of initialise_varia
1144      after cost_final call which should not be there!
1145    checkpoint52j_pre
1146    
1147    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
1148      error messages
1149    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
1150    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
1151      debug output
1152    o modfied mdsio_writefield.F to handle non-global files under exch2
1153    o update AIM Cubed-Sphere exp (aim.5l_cs):
1154      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
1155    o update AIM Equatorial Channel exp:
1156      use standard aim_v23 pkg and change the SST fields to be more realistic.
1157    o globalFile now works with exch2
1158    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
1159      mon_vort3.F to make exch2 friendly with >1 tile per cube face
1160    o limit timeave output for hi-res integrations
1161    
1162    checkpoint52i_post
1163    o removed CPP_EEOPTIONS.h from verification/*/code
1164    o updated the tiling for global_ocean_pressure
1165    checkpoint52i_pre
1166    
1167    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
1168      the old pkg/aim).
1169    
1170    checkpoint52h_pre
1171    o shortened offending lines in exch2_send_rx?.template
1172    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
1173    o genmake2: add build & execute test for NetCDF code
1174    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
1175      old grid files, moved CPP_EEMACROS.h to pkg/exch2
1176    o added useSingleCPUIO flag to monitor.F and mon_out.F
1177    o added temporary hack for sea-ice dynamics on the cube:
1178      metric terms are ignored and it is assumed that
1179      there is no sea-ice on cube faces 1, 2, 4, and 5.
1180    
1181    checkpoint52f_post
1182    o added exch2 cube routines to pkg/exch2
1183    o modified hs94.cs-32x32x5 to use it
1184    o added new grid files to hs94.cs-32x32x5
1185    checkpoint52f_pre
1186    
1187    checkpoint52e_post
1188    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
1189      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
1190    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
1191      to work with implicit vertical advection and AB ;
1192    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
1193    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
1194     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
1195    checkpoint52e_pre
1196    
1197    o fix bug in impldiff when Nr=1 or Nr=2.
1198    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
1199    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
1200    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
1201      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
1202    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
1203    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
1204    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
1205    
1206    checkpoint52d_post
1207    o re-tiled many expts to allow comparison in multi-processor mode
1208      - updated output accordingly
1209      - changed hs94.128x64x5 to use intial T from file rather than use the
1210        random number generator
1211    o add infrastructure in model routines for fizhi and gridalt packages
1212    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
1213    o changes to permit hi-res, cubed-sphere, configuration
1214      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
1215      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
1216      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
1217        of surface winds for the cube
1218      (A verification experiment, based on global_ocean.cs32x15, but with
1219       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
1220       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
1221       complete with example surface forcing files and matlab scripts to look
1222       at the output and compare it with that of global_ocean.cs32x15.)
1223    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
1224       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
1225       to conform to the common rule.
1226    o check-in the first version of the coupler + interfaces for multi-components
1227       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
1228       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
1229       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
1230       - ocean and atmos. share the same horizontal grid (no interpolation).
1231       - exchanges between component and coupler is done in forward_step
1232    o new verification experiment, cpl_aim+ocn:
1233       coupled ocean - AIM atmosphere on cs32 grid.
1234    
1235    checkpoint52d_pre
1236    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
1237    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
1238    
1239    checkpoint52c_post
1240    o Fixing OPTIONS files for use of exf:
1241      - ALLOW_ECCO not needed
1242      - ECCO_CPPOPTIONS.h should not be included from
1243        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
1244        as has been the case in the past
1245      - All cal/exf related options are currently set in
1246        single header file. Should remain so until we
1247        agree on a consistent new policy.
1248    o Removed all CPP options for cal package.
1249      cal has no more CPP options.
1250    o modified STOREs in GAD_ADVECTION
1251    o corrected key comp. for passkey
1252    
1253    checkpoint52b_post
1254    o new version: "thsice" of thermodynamic sea-ice pkg:
1255     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
1256     - modify fluxes but do not change theta directly;
1257     - light cleaning of bulk_force pkg (still needed with thsice).
1258     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
1259       + output_thsice.txt to test thsice & bulk_force pkgs.
1260    o put back grid & coriolis monitor output.
1261    checkpoint52b_pre
1262    
1263    o call "do_the_model_io" at the beginning (=> dump initial state)
1264    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
1265    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
1266      (need info on NUMBER_OF_PTRACERS)
1267    o missing PTRACERS headers in some routines
1268    o default tamc.h in pkg/autodiff supposed to crash
1269      to ensure proper customization
1270    
1271    checkpoint52a_post
1272    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
1273      - moved surfaceTendencyTice from pkg/seaice to main code
1274      - subroutine FREEZE_SURFACE now limits only surface temperature
1275        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
1276        => new output.txt for global_ocean.cs32x15 & global_with_exf
1277      - keep the old version of FREEZE for backward compatibility;
1278        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
1279      - corresponding modifs for TAF directives
1280    o added surface flux output variables to TIMEAVE_STATVARS
1281    o time-averaged output for pkg/ptracers
1282    o fix problem with ECCO-related divided adjoint
1283      snapshot file was missing some ad-variables,
1284      but no warning issued by TAF
1285    
1286    checkpoint52a_pre
1287    o some bug fixes for #undef REAL4_IS_SLOW
1288    
1289    checkpoint52 = ecco_c52_e35
1290    o after testing adjoints of checkpoint51u_post
1291    
1292    checkpoint51u_post
1293    o this is the post-merge tag of the ecco-branch
1294      (needs another clean checkout and re-testing)
1295    o various natl_box_adjoint configs and results
1296      but no input fields
1297    o obcs adjoint not yet merged!
1298    o adding ECCO global 1x1 and 2x2 degree configs
1299    o updated/extended some store directives for seaice
1300    o pkg/ecco now containes ecco-specific part of cost function
1301    o top level routines the_main_loop, forward_step
1302      supersede those in model/src/
1303      previous input data.cost now in data.ecco
1304      (new namelist ecco_cost_nml)
1305    o in ctrl/ cleaned some cross-dependencies and updated CPP options
1306    
1307    checkpoint51t_post
1308    o this is the pre-merge tag of the ecco-branch
1309    
1310    checkpoint51s_post
1311    o cleanup: removed various obsolete #define-s
1312    o pkg/grdchk
1313      - renamed 'ph-grd 3' to 'grad-res'
1314      - merged from ecco-branch
1315        (remaining bug fixes for obcs gradient checks)
1316      - additional high-precision output for testreport
1317        (grep for 'precision_grdchk_result')
1318    
1319    checkpoint51r_post
1320    o cleaned up or removed CPP_OPTIONS.h files
1321    o updated results for some of the tests to reflect the new
1322      optfiles (-ieee: -O0 instead of -O3)
1323    
1324    checkpoint51q_post
1325    o cd_code:
1326      - moved cd_scheme.F -> cd_code_scheme.F
1327      - separate read_checkpoint from cd_code_ini_vars.F
1328      - separated cd_code part from write_checkpoint
1329      - updated AD_SOURCE, generated .flow
1330      - added CD_CODE_VARS.h to the_main_loop
1331      - Moving cd_code specific store dir.s to pkg/cd_code
1332    o ctrl package totally restructured
1333      - pack/unpack now optional and decoupled from
1334        xx_/adxx_ I/O
1335      - ctrl_pack/unpack cleaned
1336        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
1337      - confined inclusion of AD_CONFIG.h to where necessary.
1338    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
1339    
1340    checkpoint51p_post
1341    o create initial cd_code package
1342      - WARNING: the initialization of fields within packages
1343        is broken because INI_FIELDS (where READ_CHECKPOINT is
1344        called) is called *before* PACKAGES_INIT_VARIABLES.
1345        This seems to be backwards since
1346        1) its important to initially zero the entire field including
1347           the "halo" region
1348        2) zeroing needs to be done *before* reading pickup info
1349           and the pickup call might or might not happen in any
1350           particular run
1351      - this needs an overhaul for R2
1352    o cleanup verification/*/code/GMREDI_OPTIONS.h
1353    o cleanup testreport
1354    
1355    checkpoint51o_post
1356    o bringing AD-related verif's up to date with genmake2
1357      - carbon/
1358      - global_ocean.90x40x15/
1359      - hs.94.1x64x5/
1360      - (front_relax/ )
1361    o (more) consistent directory structure for AD-related verif.'s
1362    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
1363    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
1364    o bug fix in find_alpha.F for MDJWF:
1365      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
1366        change rho -> rho-rhoConst
1367      - replace call find_rho to find_rhonum
1368    o initialisation of rFlx extended to full array (required by TAF)
1369      and shifted to thermodynamics
1370    o removed PTRACERS.h in ptracers routine
1371    o added surfacetendencyPtr to S/R parameter list pracers_forcing
1372    o Correcting initialisations for fVerU, fVerV.
1373    o helping TAF to recognize dependency on kUp for
1374      fVerU, fVerV
1375    o Replacing delZ by delR in pkg/ctrl/
1376    checkpoint51o_pre
1377    
1378    o undid all of cp51 pending some cleanups and discussion
1379    o added the [#include "AD_CONFIG.h"] statement to all files that need
1380       it for adjoint/tl #defines
1381     o re-worked the build logic in genmake2 to support AD_CONFIG.h
1382     o removed tools/genmake since it no longer works
1383    
1384    checkpoint51n_post
1385    o modifications to make FREEZE flux visible to pkg/kpp
1386      - moved surfaceTendencyTice from pkg/seaice to main code
1387      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
1388      - subroutine FREEZE now limits only surface temperature
1389        (this means new output.txt for global_ocean.90x40x15,
1390         global_ocean.cs32x15, and global_with_exf)
1391    o added surface flux output variables to TIMEAVE_STATVARS
1392    
1393    checkpoint51n_pre
1394    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
1395    o added [#include "AD_CONFIG.h"] to all files that use the following
1396      defines:
1397      - ALLOW_ADJOINT_RUN
1398      - ALLOW_TANGENTLINEAR_RUN
1399      - ALLOW_ECCO_OPTIMIZATION
1400    
1401    checkpoint51m_post
1402    o incorporating changes to get TAMC/TAF working in genmake2
1403      - added new TAMC/TAF targets to the Makefile
1404      - various cleanups related to package handling
1405      - these changes should have no impact on the forward model
1406    
1407    checkpoint51l_post
1408    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
1409     - faster algorithm for cal_addtime.F
1410     - higher precision arithmetic, where needed
1411     - pkg/exf *startdate variables changed from calendar date to
1412       model integration time
1413    
1414    checkpoint51l_pre
1415    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
1416    o enable to apply restoring on S & T only in a latitude band.
1417    o update output (external_forcing_surf modif. change truncation errors)
1418       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
1419    
1420    checkpoint51k_post
1421    o change default to: useNHMTerms=.FALSE.
1422     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
1423       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
1424     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
1425        exp1, ideal_2D_oce
1426     - change data file of oceanic exp (leave the results unchanged for now)
1427       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
1428    o set gravitySign automatically according to the vertical coordinate used
1429      (and change sign: back to "logical" value: +1 when R increases downward)
1430    o added an include barrier to the default CPP_OPTIONS.h and
1431      removed the #include "PACKAGES_CONFIG.h" from it
1432    o fix a bug in mom_fluxform (from chk51j_post)
1433    
1434    checkpoint51j_post
1435    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
1436    o adjusted some flow directives (dynamics, thermodynamics)
1437    o added cubed-sphere case to test cost function
1438    o heckpoint_lev?_directives.h now include
1439      pkg-specific directives, whenever those are enabled.
1440    o Moving pkg-specific flow directives to corresponding pkg
1441      Moving pkg-specific differentiation list to corresponding pkg
1442      Moving pkg-specific checkpoint-lev storing to corresponding pkg
1443      ---> conventions are
1444           - pkg_ad.flow
1445           - pkg_ad_diff.list
1446           - pkg_ad_check_lev?_dir.h
1447    
1448    checkpoint51i_post
1449    o merge of the branch-genmake2
1450      - knowingly breaks the older genmake
1451      - automatic generation of all ALLOW_${PKG_NAME} defines
1452      - new testreport supersedes older testscript
1453    o large number of package inclusion and header cleanups
1454    checkpoint51i_pre
1455    
1456    o new output for adjoin of global ocean vector invariant
1457    o fix for checkpoint of thermodynamic seaice and bulk_force
1458    o Steph gchem various cleanups
1459    
1460    checkpoint 51h_pre
1461    o fixed some single quotes
1462    o modify gchem pkg to be more versatile
1463    o modifications to clean up dic pkg
1464    o add pkg/cfc
1465    
1466    checkpoint51g_post
1467    o provide links for ARPACK and ADM*TLM
1468    o start removing verification/vero/
1469    o update AD-related stuff
1470      (in particular some IF-statements in model/src/ routines)
1471    o adding to verification/global_ocean.90x40x15/ adjoint of
1472      vector invariant setup
1473    
1474    checkpoint51f_post
1475    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
1476    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
1477      of tracer Green's fucntions for ocean inversion project.
1478    
1479    checkpoint51f_pre
1480    o Added on-the-fly spatial interpolation capability
1481        "USE_EXF_INTERPOLATION" to pkg/exf.
1482      - This is a temporary Cartesian-grid hack until
1483        the super-duper ESMF coupler becomes available.
1484      - See verification/global_with_exf/README for usage example.
1485      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
1486        flags and modified pkg/seaice accordingly.
1487    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
1488        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
1489        non-local transport term.
1490    
1491    checkpoint51e_post
1492    o pkg/mom_vecinv:
1493      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
1494      - add time-ave diagnostic of vorticity advection.
1495    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
1496    o atmospheric geopotential: - include water vapor effect;
1497                                - use p^kappa in p* scaling.
1498    o land pkg: read initial state from files.
1499    o AIM : add stratospheric drag in the upper level
1500    
1501    checkpoint51d_post
1502    o change function ILNBLNK (=> last non-blank char.) to return zero
1503      (instead of the string length) when the string. char is empty
1504    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
1505    o modif's to restore TAMC compatibility
1506      - avoid "_d" constructs in PARAMETER declarations
1507      - avoid interrupting lines by comment lines
1508    o Use cluster local disks for purely local I/O
1509      vs. globally visible disks needed for ctrl stuff
1510      (merged from ecco-branch)
1511      - new active_file_loc... and mdsio_..._loc routines
1512      - affected packages: autodiff, ctrl, grdchk, mdsio
1513    
1514    checkpoint51c_post
1515    o introducing integer flag debugLevel
1516      - debLevZero: suppress all output
1517      - debLevA: standard
1518      - debLevB: equivalent to current debugMode=.TRUE.
1519    o introducing pathname variable mdsioLocalDir for mdsio
1520      that can be specified at runtime
1521      (relevant for cluster I/O to local disk)
1522    `
1523    >>>checkpoint51b_post
1524    adjoint of ptracers
1525    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
1526    o extended state in checkpoint_lev?, etc.
1527    o alternative ctrl/cost with tr1 or ptracer
1528    o new comlev1_bibj_ptracers
1529    o new ptracers.flow
1530    o made ptracers_forcing same as external_forcing_s
1531    o added verification for adjoint with ptracers
1532      - adm. grdchk fail so far
1533      - tlm. grdchk OK
1534      - checked tapelev/comlev recomputations: OK
1535    <<<checkpoint51b_pre
1536    
1537    checkpoint51a_post
1538    o added code for biogeochemistry package
1539      - new pkgs: dic, gchem
1540      - new subroutine in ptracers
1541    o modify code for biogeo packages
1542      - in model/src and pkg/ptracers
1543    
1544    checkpoint51
1545    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
1546      - autodiff, ctrl, exf, grdchk, seaice
1547      kept separate packages
1548      - cost, ecco, obcs
1549    o updating verification/internal_wave, verification/lab_sea
1550      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
1551    
1552    checkpoint50i_post
1553    o Preparing next differentiable checkpoint and sync
1554      of MAIN vs. ecco-branch
1555      - 1st step: this one is differentiable
1556      - 2nd step: next(! not this) checkpoint will have updated packages
1557                  from ecco-branch)
1558    
1559    checkpoint50h_post
1560    o new package "land": provide surface BC for AIM.
1561    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
1562    o AIM: use true log-P extrapolation for near surface temp (= as in
1563        F.Molteni paper) ; update aim.5l_cs output.
1564    o New variable in PARM03 for more flexible pickups
1565    o somewhat cleaned package initialisation sequence for
1566      ctrl/ cost/ ecco/ in packages_... routines
1567    
1568    checkpoint50g_post
1569    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
1570      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
1571      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
1572        made the default because of faster convergence than ADI
1573    
1574    checkpoint50f_post
1575    o exf totally restructured
1576      - replaced all exf_set_ routines by one generic exf_set_gen.F
1577        and made sure it's still differentiable
1578      - split exf_getffields.F into new exf_bulkformulae.F
1579      - exf_inscal_/exf_outscal_ suffixes consistent with field names
1580      - updated adjoint/makefile and relevant verif. accordingly
1581    
1582    checkpoint50f_pre
1583     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
1584          + change Evap over land. (update aim.5l_cs output)
1585     o added missing .cvsignores and made uniform across expts
1586     o changed configuration of tidal_basin_2d expt
1587     o added pkg/debug functions for tracing code in fatal crashes
1588     o tidied pkg/monitor to use MONITOR_OPTIONS.h
1589     o new fn in pkg/monitor to stop model if solution grows too big
1590     o removed lots of single quotes from comments
1591    
1592    checkpoint50e_post
1593    o make KPP work with PTRACERS
1594     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
1595       nearly a copy of kpp_transport_s
1596     - there is no analogue to SurfaceTendencyS, so I have to use
1597       gPtr(of the surface layer) instead
1598    o add a new platform SunFire+mpi (SunFire 15000) to genmake
1599    checkpoint50e_pre
1600    
1601    checkpoint50d_post
1602    o change kpp output from multiple-record state files to single-record state
1603      files analogous to write_state.F
1604    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
1605      analogous to the cg2d-related output.
1606    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
1607      so that writing to internal file fn (with length 512) fails.
1608    checkpoint50d_pre
1609    
1610    checkpoint50c_post
1611    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
1612    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
1613    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
1614    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
1615    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
1616    
1617    checkpoint50c_pre
1618    Merging from release1_p13:
1619    o bug fix for pkg/seaice dynamic solver
1620    o Added SEAICE_initialHEFF to pkg/seaice
1621    
1622    checkpoint50b_post
1623    o store u*,v* in gU,V instead of in guNm1,gvNm1
1624    o in order to put the momForcing out of the Adams-Bashforth:
1625      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
1626      to timestep.F
1627    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
1628    o re-generate output for highly sensitive test-exp:
1629       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
1630    
1631    checkpoint50b_pre
1632    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
1633    o corrected CPP option mismatch in exf_Bulk... functions for case
1634      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
1635    
1636    checkpoint50a_post
1637    o Bug fix for merging between c50 and KPP.
1638      ikey was passed from thermodynamics to kpp_calc via
1639      common block rather than being recomputed in kpp_calc,
1640      in contradiction with new key itdkey.
1641      New key ikppkey created, and tamc.h headers updated.
1642    
1643    checkpoint50
1644    - 2nd step of merge with ecco-branch:
1645      merge changes in ecco-branch back into main trunk
1646    - bug fix in find_alpha
1647    - more storing in gmredi_calc_tensor.F, kpp_routines.F
1648    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
1649    - merged some sliced AD support routines
1650    
1651    checkpoint49
1652    merged from ecco-branch:
1653    o exf:
1654      - Enable initialisation of forcing fields to constant
1655        (runtime) values.
1656      - in exf_getffields.F
1657        Reduce i-/j-loop to interior domain, discarding overlaps.
1658        That also fixes wrong TAF-key computations for key_1, key_2
1659        with bulf formulae.
1660      - exf_init.F modify #ifdef for exf_init_evap
1661      - exf_getffieldrec.F, ctrl_getrec.F
1662        The following INT-usages are not safe:
1663          fldsecs  = int(fldsecs/fldperiod)*fldperiod
1664          fldcount = int(fldsecs/fldperiod) + 1
1665        and were modified.
1666    o autodiff: checkpoint_lev...
1667      - updated storing for bulk formulae (some arrays were missing)
1668      - added state for seaice package
1669      - synchronized with main branch
1670    o DIVA:
1671      Modif.s in
1672      - the_main_loop.F
1673      - the_model_main.F
1674      and added cost_final_restore.F cost_final_store.F
1675      o With these changes, it is possible to fully separate
1676        the first forward run to compute the cost function (mdthe_main_loop)
1677        and adjoint runs over individual DIVA intervals (adthe_main_loop)
1678        into separate model executions.
1679        This enables better tuning of DIVA to given queue sizes.
1680      o Loss of cost function value in consecutive DIVA runs is
1681        fixed by storing to 'costfinal' file.
1682      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
1683        beginning/end of adjoint integration is accounted for.
1684      The current changes apply to TAF-1.4.26.
1685      TAF has one remaining bug, requiring one manual change
1686      (see MITgcm manual).
1687    o cal: synchronized between MAIN and ecco-branch
1688    
1689    checkpoint48i_post
1690    o Changes to restore differentiability of code w.r.t. previous tag
1691      (mostly adding new routines to make list and replacing
1692      pressure by totPhiHyd).
1693    o Updated and merged grdchk package
1694      - has both ADM and TLM checks
1695      - works for single- and multi-proc.
1696      - output cleaned
1697      - worked successfully for parallel DIVA
1698    o genmake:
1699      - Adding -platform=SP4
1700      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
1701    o Modif. for DIVA:
1702      ctrl_unpack should not be called in intermediate DIVA interval.
1703      (similar thing would apply for active files such as
1704      tbar, sbar, psbar, which should not be reinitialised;
1705      only relevant for ecco-branch)
1706    
1707    checkpoint48h_post
1708    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
1709    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
1710    o Added SEAICE_initialHEFF to pkg/seaice
1711    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
1712    
1713    checkpoint48g_post
1714    --- EOS:
1715    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
1716      store total Potential in totPhyHyd for diagnostics & EOS.
1717    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
1718    --- Pressure/geopotential gradient:
1719    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
1720    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
1721      ( changes results of global_ocean_pressure )
1722    o NLFS + z-coord.: add eta*Rho' contribution.
1723    o accurate phiHyd when using interface-W at the middle between 2 centers
1724     ( changes results of ideal_2D_oce )
1725    o includes r* 2nd term in potential gradient.
1726    
1727    checkpoint48f_post
1728    Merging from release1_p12:
1729    o Modifications for using pkg/exf with pkg/seaice
1730      - improved description of the various forcing configurations
1731      - added basic radiation bulk formulae to pkg/exf
1732      - units/sign fix for evap computation in exf_getffields.F
1733      - updated verification/global_with_exf/results/output.txt
1734    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
1735      (SBO) core products, including oceanic mass, center-of-mass,
1736      angular, and bottom pressure (see pkg/sbo/README.sbo).
1737    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
1738      to avoid negative values in shallow regions.
1739      - updated verification/natl_box/results/output.txt
1740      - updated verification/lab_sea/results/output.txt
1741    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
1742    o Added useSingleCpuIO option (see PARAMS.h).
1743    o Updated useSingleCpuIO option in mdsio_writefield.F to
1744      work with multi-field files, e.g., for single-file pickup.
1745    o pkg/seaice:
1746      - bug fix in growth.F: QNET for no shortwave case
1747      - added HeffFile for specifying initial sea-ice thickness
1748      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
1749    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
1750      kpp_transport_t.F, forward_step.F, and the_main_loop.F
1751    o pkg/seaice:
1752      - adjoint-friendly modifications
1753      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
1754    
1755    checkpoint48e_post
1756    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
1757    o dynamics: change definition of computational domain & adapt mom_fluxform
1758      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
1759    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
1760        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
1761        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
1762        global_ocean.90x40x15 global_with_exf global_ocean_pressure
1763        inverted_barometer solid-body.cs-32x32x1
1764      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
1765    
1766    checkpoint48d_post
1767    o in preparation for r*:
1768     a) use pre-computed gradient of hydrostatic potential:
1769        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
1770     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
1771        => affects results of glob_oce_pressure (different truncation error)  
1772      update output.txt of ideal_2D_oce & global_ocean_pressure
1773    
1774    checkpoint48d_pre
1775    o in preparation for r*:
1776      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
1777      pass the 2 comp. of the grad. as arguments to momentum S/R.
1778      but for the moment, only used if it does not change the results.
1779    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
1780    
1781    checkpoint48c_post
1782    Modifications in treatment of initial flux forcing controls
1783    to avoid extra storing of flux fields.
1784    
1785    checkpoint48c_pre
1786    o Added tidal_basin_2d experiment (currently 1D!)
1787    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
1788    
1789    checkpoint48b_post
1790    o r* coordinate added in #ifdef NONLIN_FRSURF block.
1791     (modification to pressure gradient not yet implemented)
1792    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
1793      (for U & V) that are used for vertical advection of momentum.
1794    
1795    checkpoint48a_post
1796    o In preparation for r*, use temp. array to compute vertical transport
1797       in flux-form momentum pkg. => change results of few test-exp.
1798      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
1799                        lab_sea, natl_box & plume_on_slope
1800    
1801    checkpoint48
1802    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
1803    
1804    checkpoint47j_post
1805    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
1806    o moved adexch from forward_step to addummy_in_stepping
1807    o added exch in ctrl_map_...
1808    o aveFreq.=0. at end of cost_final to avoid overwrite in
1809      reverse checkpointing loop
1810    o Yet more changes in gmredi:
1811      * adgmredi_calc_tensor
1812        avoiding all recomputation of gmredi_slope_limit
1813      * adgmredi_x/y/rtransport
1814        added flag for excessive storing to avoid recomp. of
1815        u/v/rtans, dTdx/y/z
1816        -> this is not really necessary and very memory-consuming
1817      * adgmredi_slope_psi:
1818        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
1819      * gmredi_slope_limit
1820        re-activated full calculation of taperfct for case 'ac02'
1821    o updating verification/ adjoints of carbon, global_ocean.90x40x15
1822    
1823    checkpoint47i_post
1824    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
1825    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
1826      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
1827    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
1828    o gmredi: fix few bugs.
1829    
1830    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
1831    This will be a good checkpoint to plug into the ecco-branch.
1832    o few modif.'s to get latest version adjointed
1833      (mainly kick out code in ini_linear_phisurf)
1834    o modif's to run adjoint with exactConserv
1835    o case GM_BOLUS_ADVEC should be cleaned
1836      S/R gmredi_slope_psi should be cleaned
1837    o verification/carbon now has exactConserv=.TRUE.
1838    
1839    checkpoint47g_post
1840    o time-average AIM output: becomes independent from statvars time-average
1841      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
1842    o After TAF bug fix:
1843      Tested adjoint of gmredi package.
1844      Tests were done with checkpoint47 rather than with latest
1845      checkpoint47f_post since the latter is broken for the adjoint
1846      verification/carbon/ contains both ADM and TLM gradient checks.
1847    Here they are, before they get changed/lost/stolen.
1848    Mostly modif.'s to fix numerical sensitivities.
1849    Gradient checks OK for
1850    - GM_taper_scheme:
1851      * clipping
1852      * ac02
1853      * linear
1854      * glw91
1855      * dm95
1856      * ldd97
1857    - GMREDI_OPTIONS:
1858      * GM_VISBECK_VARIABLE_K
1859      * GM_NON_UNITY_DIAGONAL
1860      * GM_EXTRA_DIAGONAL
1861      * GM_BOLUS_ADVEC
1862    in conjunction with data.gmredi parameters to be checked in
1863    in a few minutes under verification/carbon/code/
1864    
1865    checkpoint47f_post
1866    Merging from release1_p10:
1867    o modifications for using pkg/exf with pkg/seaice
1868      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
1869        and SEAICE_EXTERNAL_FLUXES
1870      - pkg/exf CPP options EXF_READ_EVAP and
1871        EXF_NO_BULK_COMPUTATIONS
1872      - usage examples are Experiments 8 and 9 in
1873        verification/lab_sea/README
1874      - verification/lab_sea default experiment now uses
1875        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
1876    
1877    checkpoint47e_post
1878    o created a tag prior to creating a branch
1879    
1880    checkpoint47d_post
1881    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
1882      at the bottom boundary had an erroneous half slip boundary condition
1883    o added bottom drag and no slip boundary condition capabilities to
1884      oceanic pressure coordinates code
1885    o added new verification experiment global_ocean_pressure, this experiment is
1886      also described in the tutorial section of the manual
1887    checkpoint47d_pre
1888    
1889    checkpoint47c_post
1890    o Added a verification experiment for a global cubed-sphere ocean run
1891      -  verification/global_ocean.cubed32x32x30
1892      -  uses pkg/therm_seaice and pkg/bulk_forcing
1893    
1894    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
1895    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
1896      when using P-coordinate; only implemented for atmospheric config.
1897    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
1898      NOTES: requires option NONLIN_FRSURF to be "#define".
1899    o update advect_xz/results/output.txt (left from checkpoint44g_post)
1900    
1901    checkpoint47b_post
1902    Merging from release1_p9:
1903    o pkg/seaice
1904      - removed GOTO's and added taf directives
1905      - double precision constants to reduce the g77 (Linux)
1906        to F77 (SGI) differences reported in release1_p8
1907    o tools/genmake
1908      - added SGI options
1909    o verification/testscript
1910      - updated to that of checkpoint47a_post
1911    o verification/global_ocean.90x40x15/input/eedata
1912      - modified for SGI f77 compatibility
1913    o verification/lab_sea
1914      - added description of sea-ice model
1915      - added missing matlab routines
1916      - added test of thermodynamics parallelization
1917    
1918    checkpoint47a_post
1919    o new pkg: aim_v23
1920     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
1921       for now, keep the same surface forcing as before.
1922     - Part-Cell implemented into AIM; check that Heat & Water are conserved
1923     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
1924     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
1925    o add diagnostic of surface correction term in monitor output
1926    
1927    o bulk_force and therm_seaice
1928    - Two packages:  bulk_force (Bulk forcing)
1929      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
1930    - Earlier integration from Stephaine Dutkiewicz
1931      and Patrick Heimbach.
1932    - Two ifdef statements for compile time,
1933       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
1934    
1935    checkpoint47
1936    differentiable version of checkpoint46n_post
1937    o bug fix in quasihydrostaticterms
1938    o * "clean" adjoint code (in terms of extensive recomputations)
1939        can now be obtained for all GMREDI options (i.e. for
1940        - GM_VISBECK_VARIABLE_K
1941        - GM_NON_UNITY_DIAGONAL
1942        - GM_EXTRA_DIAGONAL
1943        - GM_BOLUS_ADVEC )
1944      * However, wrong gradient check problem remains unsolved.
1945      * New CPP options have been introduced for different
1946        tapering schemes
1947    o external_fields_load now part of differentiation list
1948    o pressure needs multiple storing;
1949      would be nice to have store_pressure at beginning or
1950      end of forward_step, e.g. by having phiHyd global (5-dim.)
1951      (NB: pressure is needed for certain cases in find_rho,
1952      which is also invoked through convective_adjustment).
1953    o recomputations in find_rho for cases
1954     'JMD95'/'UNESCO' or 'MDJWF' are OK.
1955    o #define ATMOSPHERIC_LOADING should be differentiable
1956    o ini_forcing shifted to begining of initialise_varia
1957    o Incorporating QNVS line search routines into MITgcm
1958      (this is separate code, and therefore not under pkg)
1959      lsopt/, optim/
1960    o Updated verification/carbon/
1961      - #define GM_VISBECK_VARIABLE_K
1962      - GM_taper_scheme    = 'ldd97'    
1963    
1964    checkpoint46n_post
1965    Merging from release1_p8:
1966    o verification/natl_box:
1967      updating new external_fields_load routine
1968    o New package: pkg/seaice
1969      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
1970      The sea-ice code is based on Hibler (1979-1980).
1971      Two sea-ice dynamic solvers, ADI and LSR, are included.
1972      In addition to computing prognostic sea-ice variables and diagnosing
1973      the forcing/external data fields that drive the ocean model,
1974      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
1975      The implied surface heat flux is then stored in variable
1976      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
1977      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
1978      non-local transport term.  Because this call precedes model
1979      thermodynamics, temperature under sea-ice may not be "exactly" at
1980      the freezing point by the time theta is dumped or time-averaged.
1981      N.B.: fairly large differences in accuracy occur across
1982            different platforms/compilers; comparison between
1983            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
1984            generated output gives:
1985       T           S           U           V
1986      C D M    c        m  s        m  s        m  s        m  s
1987      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
1988      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
1989      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
1990    
1991      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
1992    o GAD:
1993      - generated new common blocks to account for call of
1994        same gad routines with differing traceridentities
1995        (needed to modify tracerIdentity indices in GAD.h)
1996      - generated separate common blocks for case useCubedSphereExchange
1997        (Department of Futurology)
1998      - parameter lists to gmredi_?transport: added tracerIdentity
1999      - added new key indices to tamc.h
2000    o external_fields_load:
2001      - added this routine to TAF list
2002      - needed to make some common blocks global and additional storing
2003        along the same lines as exf package (checkpoint_lev?_directives.h)
2004    o exf:
2005      updated external forcing package
2006      - bug fixes carried over from ecco-branch
2007        (missing OBCS_OPTIONS.h in two routines)
2008      - enable easy to use "no forcing".
2009      - added exf I/O for atmospheric loading
2010      - added exf I/O for runoff data
2011      - transfered scaling between exf <-> MITgcm to exf namelist
2012    o Adding new verification experiment global_with_exf.
2013      This verification experiment is almost identical to the
2014      global_ocean.90x40x15 experiment, except that it uses
2015      the exf (and cal) package instead of the
2016      external_fields_load routine (cf README file).
2017    
2018    checkpoint46m_post
2019    o modified testscript to return -- when there are no lines of "%MON" output
2020    o added new flag "quasiHydrostatic" for QH mode
2021      and new routine quasihydrostaticterms()
2022    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
2023      New routine: mom_u_coriolis_nh()
2024    o fixed sign of non-hydrostatic metric terms in u and v equations.
2025      Depend on correct sign of gravitySign.
2026    o added work.pc* to .cvsignore in aim directories using ifc
2027  o introduced flag for controllin non-hydrostatic metric terms  o introduced flag for controllin non-hydrostatic metric terms
2028  o removed gravitySign from PARM04  o removed gravitySign from PARM04
2029  o switched to g77/ifc from pgf77 in aim experiments  o switched to g77/ifc from pgf77 in aim experiments

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