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revision 1.55 by heimbach, Fri Jan 18 22:13:27 2002 UTC revision 1.588 by heimbach, Thu Dec 8 15:47:40 2005 UTC
# Line 1  Line 1 
1  $Header$  $Header$
2    $Name$
3    
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    checkpoint57y_post
8    First step for a NLFS adjoint
9    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
10    o new init. routines for calc_r_star, calc_surf_dr
11    o still need to deal with ini_masks_etc
12    o testreport seemed happy
13    checkpoint57y_pre
14    
15    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
16    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
17    o add new offset feature to offline pkg (plus minor cleanup)
18    o cfc fixes for final year of integration
19    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
20      be in GCHEM_OPTIONS).
21    
22    checkpoint57x_post
23    o fix testreport Pb in multiple test experiment.
24    o cleanup our namelist syntax in verification:
25      - make it more F95 standards compliant (some work still needed)
26      - allows the vast majority of our tests to work with gfortran
27    o Non-Hydrostatic:
28     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
29     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
30    o Allow to apply AB on T,S rather than on AB(gT,gS):
31     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
32     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
33       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
34     - need a "clever" read_pickup to restart from the other AB formulation
35    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
36    o remove some unused variables (reduces number of compiler warnings)
37    o adjoint
38      * Disable useVariableViscosity for adjoint for time being
39        (there are a number of extensive recomputations)
40      * Initialize certain variables needed for adjoint
41    
42    checkpoint57w_post
43    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
44                 fix the singleCpuIO RS version of MDSWRITEFIELD
45       and add a WARNING if using globalFiles=T with multi-processors.
46    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
47      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
48    o tracer advection scheme:
49      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
50       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
51       was not very convenient).
52      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
53       (further tests needed for the implicit DST & Flux-Limiter schemes).
54    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
55      and sRef for convenience, handy, when you want to initialize
56      ptracers in a large domain with a constant non-zero value. Also,
57      untangle ptracers_init.F a little.
58    
59    checkpoint57v_post
60    o change dome exp. to use variable viscosity in side-drag terms.
61    o remove all the files from the cfc_offline test since they are now
62      incorporated into tutorial_cfc_offline which has been producing
63      identical results for a few days of testing
64    o add new parameter: sideDragFactor to enable half-slip-side BC
65      and change side-drag S/R to use viscosity from mom_calc_visc
66      (can switch back by setting sideDragFactor=0.); affects results at
67      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
68       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
69    o vorticity & strain are now computed without masking, to account for
70      no-slip-side BC in variable viscosity calculation ; mask is applied
71      anyway later on, before computing advection/coriolis terms.
72    o modify exp4 to test new obcs support for reading from external files
73      and for passive tracers
74    o fix behavior of ptracers_monitor when monitor output is written to a
75      netcdf-file; still not independent of monitor.F (writes in the same
76      file).
77    o change default value of tRef (put a uniform, meaningful value for ocean
78      & atmos) and initialize sRef (was missing, as Martin mentioned).
79    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
80      to be proportional to enstrophy dissipation length.  Thus,
81       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
82      This is now consistent with Smagorinsky and with the manual.
83    
84    checkpoint57u_post
85    o OBCS and PTRACERS: add open boundary support for passive tracers
86      - either use homogenous (pseudo) v.Neumann conditions or prescribe
87        OB-values from file; this is not different from the way theta and salinity
88        are treated
89      - however, Orlanski-radiation conditions are not supported, and the model
90        will stop if you use pTracers and Orlanski at the same time.
91      - beefed up the rountine obcs_external_fields_load: now only those open
92        boundary values are overwritten with values from files for which there
93        are really files, otherwise the OB-fields remain untouched. This makes
94        it possible to use different OBs at different ends of the domain (as
95        with EXF)
96    o reduce number of exch calls in shap_filt (s2).
97    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
98      truncation level) 4/5 MLAdjust test results (11&12 digits match).
99    
100    checkpoint57t_post
101    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
102    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
103      same truncation, independent of the face number: affects affects several
104      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
105    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
106      note that biharmonic viscosity + no-slip was not tested in any experiment.
107    o fix bug in non-linear free-surf side-drag ; generate new output for
108      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
109    o make mnc honor the writeBinaryPrec flag for most kinds of output
110    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
111    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
112      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
113    o add brackets in multi-terms sum to get same truncation, independent of
114      the face number (manage to get exactly same value of gU,gV at the cs-edge)
115      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
116    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
117      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
118      a maximum grid-scale Reynolds number.  Also, changes all length calculations
119      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
120      Suggested values of viscosity parameters found in mom_calc_visc.
121      Many new viscosity diagnostics available.
122    
123    checkpoint57s_post
124    o Add clearing-house for viscosity calculations, mom_calc_visc and
125      correct numerous bugs in LeithD and Smagorinsky discretizations.  
126      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
127      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
128      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
129      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
130      The Strain-Tension form is now called with useStrainTensonVisc=.true.
131      ViscAhStrain and viscAhTension are now retired.
132    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
133    o In response to JMC's bug report, genmake2 now ignores any soft-links
134      that it finds in the *current* directory when searching for files.
135      Soft-links found in any other source directories will still work as
136      they did before.
137    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
138      a C routine to unlimit the stack size
139    o mnc-ify pkg/aim snapshot vars
140    o mnc-ify pkg/land as requested by Daniel
141    o various changes to mnc including:
142      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
143      - output can now be grouped so that all files within a group
144          change the ITER portion of their names in lock-step together
145      - can now read ("global") PER-FACE (in addition to PER-TILE) files
146          and works with both EXCH1 and EXCH2 (but needs more testing)
147      - writing works for all verification test cases w/ g77 on Linux
148    
149    checkpoint57r_post
150    o make MNC variable initialization happen earlier
151    o add diagnostics for (almost) each term of the momentum Eq.
152    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
153    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
154    o remove MINIMAL_TAVE_OUTPUT option ;
155      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
156    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
157      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
158    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
159    o add time-dependent SST, SSS control
160    o cost terms in ecco/ modularized (new cost_generic.F)
161    o cost_averages routines are modularized (new cost_averagesgeneric.F)
162    o new infrastructure for seaice model vs. obs misfits in seaice/
163      * driver from the_main_loop.F is seaice_cost_driver.F
164      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
165      * gradient check in Exp. 6a of natl_box_adjoint/
166    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
167      (see README file)
168    
169    checkpoint57q_post
170    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
171    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
172      - bug was reported by Jean-Michel and Ian Fenty
173    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
174      update exp. cpl_aim+ocn output.
175    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
176      Needed for high-res. runs with large global files
177      to be able to limit tapelev size
178    o Changed some tests for adjoint:
179      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
180      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
181      * global_ocean.90x40x15/ back to default 3-level checkpointing
182    o Modifications to enable scripted COMMON to MODULE conversion
183      * verification/OpenAD/code/ has necessary scripts and description;
184      * converts, compiles and runs successfully;
185    
186    checkpoint57p_post
187    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
188    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
189      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
190    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
191    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
192      (was already the case for dissipation with mom_vecinv,
193       and also the case for grad.PhiHyd when staggered-timeStep)
194      This will allow to put dissipation out-off the AB time-stepping.
195     Unfortunately, affects truncation error. Update output of exp. that "fails"
196      (cg2d matching number) and leave the others for later: front_relax(10),
197      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
198      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
199    
200    checkpoint57o_post
201    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
202      (2) its ready to be documented during the 20050801 DocFest
203    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
204      for ideal_2D_oce and lab_sea on linux_ia32_g77
205    o set to #undef CTRL_SET_OLD_MAXCVARS_30
206      in global1x1_tot/code_seaice_adj to access indices 32, 33
207      (worth another tag)
208    
209    checkpoint57n_post
210    o adding precip control xx_precip 32
211    o adding swflux control xx_swflux 33
212    o Replacing 10 forcing penalty cost routines by 1 generic.
213    o Implementing partitioning in time-mean and variable adjustment
214      for atmos. state.
215    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
216    o in natl_box_adjoint:
217      * updated exp 1 to 10
218        (but does not have time-mean vs. variable split results yet)
219    o updated global1x1/*_seaice_adj/
220      to incorporate latest changes
221    o enable useSingleCpuIO for mdsio vector routines
222      (applies in particular to tapelev I/O)
223    o removed inefficient K-loop in all active_file*control*.F
224    
225    checkpoint57m_post
226    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
227      and advect_cs (use EXCH-2 and standard cs-32 grid files).
228    o pkg/exch2: filling of face-corner halo regions is optional
229      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
230    
231    checkpoint57l_post
232     tag before updating tutorials (pre-release-2)
233    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
234       for output and interpolation of input fields onto model grid)
235    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
236       Affects results of exp. rotating_tank ; update output.txt.
237    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
238          and taking the square quantity and/or using a fraction-weight field.
239    o fix aim_diagnostics_init.F mate numbers.
240    o add mnc output capability to diagnostics/diagstat and update
241      our cvsignore files for the ACSII output generated
242    
243    checkpoint57k_post
244    o lab_sea now uses diagnostics package and provides a suite of
245      new EXF diagnostics output.
246    
247    checkpoint57j_post
248    o exf
249      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
250        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
251        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
252      * extended diagnostics output
253        - now includes all EXF variables
254        - hs, hl moved to common block
255        - separate S/R for diagnostics, called after ctrl vector is added
256        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
257        - EXFqnet contains true Qnet (i.e. includes qsw)
258      * updated verif. lab_sea, global_with_exf
259      * Rearranging hflux (exf_mapfields -> exf_getforcing)
260        to ensure that diagnostics sees a true EXFqnet
261    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
262    o diagnostics pkg: change pointers so that 1 diagnostic can be used
263      several times with different frequencies.
264    o mnc-ify the thsice package as requested by Daniel Enderton
265      - the monitor--MNC output needs work
266      - many attributes need to be added (most are currently blank)
267    o mnc-ify theaim_v23 package as requested by Daniel Enderton
268      - many attributes need to be added (most are currently blank)
269    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
270    o add Sadourny like discretization to the 4th.O vorticity advection scheme
271    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
272      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
273         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
274    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
275     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
276    
277    checkpoint57i_post
278    o Diagnostics package was changed: diagnostic allocation is now deactivated
279      by setting an empty file name in the namelist (used to be by setting 0 frequency)
280    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
281      add 1rst Order upwind vertical Shear.
282    o add a quick fix for A/B checkpointing in OFFLINE mode
283    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
284      end-run around the C/Fortran linking horror in eesup/src/timers.F
285    o added pkg/runclock: allows user to terminate run based on wall clock
286    o added non-hydrostatic scaling parameter: nh_am2
287    o pkg/my82: futile attempt to make results compiler-independent by adding
288      some "_d 0", etc. no effect.
289    o for mnc output, fill the 'T' coordinate var with myTime and create a
290      separate 'iter' variable for iteration count
291    o pkg/diagnostics:
292      add new capability: output of Global/Regional & per-level statistics ;
293      tested against monitor output (including land & thSIce) on various exp.
294    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
295    
296    checkpoint57h_done
297      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
298      data.diagnostics, data.gchem, data.ptracers) is done.
299    
300    o pkg/diagnostics: prepare for Global/Regional statistics.
301      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
302    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
303      and rename it: DIFFERENT_MULTIPLE
304    
305    checkpoint57h_post
306    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
307    o pkg/diagnostics: change output frequency, now in seconds (instead
308      of Nb of iterations). This requires to change data.diagnostics.
309    checkpoint57h_pre
310    
311    o in mnc, let the user create the output dir if both mnc_outdir_date
312      and mnc_outdir_num are false
313    o add fflags() to pkg/diagnostics which allows one to specify, on a
314      per-file basis, the file precision [default behavior is unchanged]
315    o added diagnostics to pkg/kpp, including computation of mixed layer
316      depth based on a temperature/density criterion
317    o updated verification/natl_box to test the new pkg/kpp diagnostics
318    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
319    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
320    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
321      not mnc -- this mistake was found by JMC and is now corrected
322    
323    checkpoint57g_post
324    o add Adams-Bashforth 3rd Order time stepping:
325      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
326      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
327    checkpoint57g_pre
328    
329    o make lambda[Theta,Salt]ClimRelax spatially varying
330      (default remains spatially uniform constant based on tau)
331    o added new control variables
332      * init. uVel, vVel, etanN
333      * lambda[Theta,Salt]ClimRelax
334    o separate masks used for ctrl_pack/unpack 'from write_grid' output
335      (suggested by G. Forget)
336    
337    checkpoint57f_post
338    o add parameter "baseTime" = model base time = time at iteration zero
339      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
340      account for baseTime shift
341    o move Coriolis arrays from PARAMS.h to GRID.h
342    checkpoint57f_pre
343    
344    o mnc-ifying the seaice package
345    o introduced an alternative length scale calculation for use in the limiting
346      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
347    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
348    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
349      as well as grad(vort3).  Made it compatible with both approximate form
350      for the cubed sphere and full form of these gradients.  Added flag
351      useFullLeith to select between approximate and full form.  
352    o add "d0" in getcon.F to reduce differences between compilers/platforms
353      update output.txt of exp. fizhi-gridalt-hs
354    o change port_rand funtion to allow to set the seed.
355    o fix obscure MNC bug involving conversion between reals and integers
356      - it caused no problems with certain (eg. gcc, ifc) compilers but the
357        new version is now more standards-compliant
358    o adjoint-related modifications
359      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
360      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
361      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
362    
363    checkpoint57e_post
364    o Adding eddy stress controls a la Ferreira et al.
365    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
366    
367    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
368      update output.txt of exp. fizhi-gridalt-hs
369    o add more "Z" dimensions and associated coordinate vars to MNC
370    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
371    o parameter calendarDumps: when set, approximate months (30-31 days) and years
372      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
373      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
374      months and years.  Requires pkg/cal.
375    o diagnostics: add pickup functionality
376      - off by default for backwards compatibility
377      - current version only uses MDSIO -- MNC will be added
378    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
379    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
380    
381    checkpoint57d_post
382    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
383    o modify verification/ideal_2D_oce so that it tests the creation of mnc
384      output from the diagnostics package
385    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
386    o make genmake2 more portable by using ".$FS" instead of ".f" for more
387      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
388    o add coordinate variables to the MNC output from the diagnostics package
389    o change MNC-flags default value: true when useMNC=TRUE
390    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
391      the ability (off by default) to read the grid information using MNC
392    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
393    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
394    o do snap-shot diagnostics at the middle of the time-interval (instead of
395      at the end).
396    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
397      new test for AIM with thSIce + slab-ocean
398    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
399    o move state variable diagnostics to the beginning of the time step ;
400      (note: still needs some work specially for snap-shot diagnostics)
401      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
402    
403    checkpoint57c_post
404    o Change testing option (-ieee) to get closer agreement between g77 & ifort
405    o generate new output.txt files on faulks with g77 & the new -ieee option
406    checkpoint57c_pre
407    
408    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
409      update output.txt of exp. global_ocean.90x40x15
410    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
411      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
412    o add saltFlux(+File) forcing capability with periodicExternalForcing
413    o allow to use pkg diagnostics for GM-Redi & ThSIce output
414    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
415    o improvements for the MNC output from DIAGNOSTICS:
416      - correct handling of the unlimitied dimension
417      - all dims now have associated coordinate variables
418      - variables located at U, V, and Corner ("Z") points are now written
419        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
420        *all* data points are output
421    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
422    o added pkg/seaice/seaice_monitor.F
423    o mdsio_readfield.F can now read files visible only to master MPI process.
424    o pkg/seaice: some test code for ice-modified ocean stress
425    o exf_getffields interpolation defaults to bilinear for all scalar forcing
426      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
427      spurious negative numbers for precipitation and humidity.  Will cause
428      some small numerical differences for integrations using pkg/exf/exf_interp.F.
429    o pkg/ctrl/
430      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
431        May be enabled via doPackDiag
432      *  introduce z-scaling of
433         + gradient (doZscalePack) and
434         + control (doZscaleUnpack)
435    o pkg/mdsio/
436      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
437      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
438    
439    checkpoint57b_post
440    o simplify options in diagnostics_fill arguments (remove weird combinations)
441    o fix MNC coordinate variables so that they now contain per-face index
442      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
443      general, EXCH2 grids are only aligned to a "local" coordinate system
444    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
445    o Implement instantaneous output within pkg diagnostics:
446      setting a negative frequency in data.diagnostics produces
447     "snap-shot" output (as opposed to time-average if freq > 0)
448    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
449      NOTE: change ptracer diagnostics name: use 2 characters to work with
450            more than 9 tracers. Add also diagnostics of advect & diffus flux.
451    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
452      becomes the coordinate variable for the 'T' dimension
453    o add CF-style coordinate variables to MNC
454      - just a first cut:  numbers are meaningless on the cubesphere and
455        missing along the T axis but otherwise it works!
456    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
457    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
458    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
459      this is based directly on what the model compute, so that the content of
460      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
461    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
462    o clean up build options files for SunOS, in particular
463      - remove -traditional from xmakedepend
464      - change -xarch=v9 to -xarch=native for f77
465      - restore use of make (not gmake)
466      - add CC=gcc if using g77
467    o changes per discussion of AM, JMC, & EH3 today:
468      - move redundant "grid" variables out of "state" -- in preparation of
469        creating proper CF-style coordinate variables and in recognition
470        that any/all grid variables can be easily copied (eg. w/NCO) from
471        the grid files into any of the other NetCDF files
472      - *always* output grid variables with MDSIO (this will eventually be
473        changed)
474      - output MNC grid file if useMNC is true
475    o every instance of _END_MASTER() has been found and replaced with
476      _END_MASTER( myThid ) in order to satisfy certain picky Sun
477      preprocessors
478    o re-arrange diagnostics pkg initialisation:
479     - allow each package to extend the available diagnostics list
480     - add some checking and fix small problems (multi-threaded, ...)
481     - new S/R diagnostics_fill (replace fill_diagnostics):
482       look through the short list of active diag. (instead of the long list)
483       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
484    
485    checkpoint57a_post
486    o this set of changes restores TAMC compatibility
487      tested for global_ocean.90x40x15 adjoint on trough
488      (what a pain)
489    
490    checkpoint57a_pre
491    o some modifs in tools/build_options for sunos
492    o call ctrl_pack for ctrl at end for optimcycle=0
493    
494    checkpoint57
495    o add horizontal bi-harmonic viscosity for vertical velocity
496      - new parameter viscA4W (defaults to viscA4)
497      - affects only non-hydrostatic code
498      - to be done: no-slip lateral boundary conditions
499    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
500    o implement Implicit Vertical advection for pTracers
501    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
502      (implemented also for implicit vertical diffusion & advection)
503    o OBCS: extend application of tracer open boundary conditions
504      to a strip beyond the boundary of width Olx/Oly
505    o add call monitor to TAF set of required calls (flow directives)
506      and include in natl_box_adjoint
507    o untangle a few ifdefs related to cost, ctrl, autodiff
508      untangel a few ALLOW_ECCO_OPTIMIZATION
509    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
510      (theta2, salt2 in ecco_cost_weights)
511    
512    checkpoint56c_post
513    o OBCS as control variables
514      - update ctrl_ad_diff.list, obcs_ad_diff.list
515      - remove balance of obcs controls from default
516      - fix index bug nobcs in ctrl_init
517      - fix dummy fields filen in ctrl_pack
518      - add dummy weights for obcs
519    o lsopt: comment out fort.94 output
520    o optim:
521      - remove unnecessary header files
522      - adjusted namelists
523      - add xerbla.F to Makefile
524    o exf:
525      - multiple modifications of exf_check_range
526      - unit change in exf_init_runoff from [m/year] to [m/s]
527    o mdsio:
528      - i/o-vector change debugLevel from debLevA to debLevB
529    
530    checkpoint56b_post
531    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
532      is called from DO_THE_MODEL_IO
533      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
534      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
535      - clean up PTRACERS_WRITE_TIMEAVE a little
536    o add another verification experiment that tests both the cfc-pkg and
537      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
538      reactive tendencies treated inline with regular timestepping
539    o testreport previously did a lousy job of comparing small numbers, so
540      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
541      implemented in the little c-progam tmp_cmpnum.c which is embedded in
542      testreport.
543    o ptracers_monitor: bug fix for MPI
544    
545    checkpoint56a_post
546    o GCHEM: finish reorganizating the package
547      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
548        (introduces another 3D-array for each passive tracer, but only if
549        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
550        gchemTendency is not needed because the timestep is done separately)
551      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
552      - GCHEM is now---more or less cleanly---separate from PTRACERS
553      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
554        so clear to me how that should be done in a general way.
555    o CFC: improve formatting of output in CFC_ATMOS
556    o PTRACERS:
557      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
558        that ALL experiments with ptracers enable can be checked. This makes
559        GCHEM_MONITOR obsolete.
560      - include a runtime parameter PTRACERS_monitorFreq that defaults to
561        monitorFreq
562      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
563    o add PTRACERS (PTR0[1-5]) to testreport output
564    o exf_check_range:
565      * default changed to .TRUE.
566      * will check values for niter0 if debLevA, every timestep if debLevB
567      * STOP in exf_check_range if 'out of range'
568      * range chosen generous to allow for potential extema
569      TBD: a version with stricter range
570           permitted range would be runtime parameters
571    o GMredi:
572      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
573      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
574      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
575    o GCHEM:
576      - move call to GCHEM_FORCING_SEP, so that it is now called before
577        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
578      - introduced a useGCHEM runtime flag and applied it everywhere.
579      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
580        this flag is now only visible within GCHEM-pkg routines.
581      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
582        be replaced by a 3D array that is computed before thermodynamics; for
583        this, the tracer ID iTracer had to be included into the parameter list
584        of ptracers_forcing
585      - set up forward_step to call gchem_forcing, that will replace
586        gchem_forcing_int in ptracers_forcing
587      - cleaning up
588    o small cleaning of exch2: remove files that are also in eesupp/src
589    
590    checkpoint56
591    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
592    o mnc: cleanup "full" files--fixes out-of-memory problem
593    o ECCO-GODAE
594      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
595      * fully merged and updated from SIO code
596        windstress sign change affects
597        - exf_inscal_[u/v]stress
598        - sign of xx_tau[u/v] adjustments
599        - signs in cost_scat
600      * ctrl_get_gen: avoid update of tau[u/v] for first few days
601      * natl_box_adjoint updated and compressed
602      * 2-level checkpoint switch added
603        (tested in EXP. 1 of natl_box_adjoint)
604      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
605    o SVD
606      * first complete, non-hacked version for SVD calculations
607      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
608        performed via direct access files admtlm_vector.it????
609        (via ctrl_[un]pack)
610      * optimcycle is used for ARPACK iteration counter
611        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
612      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
613        and add linear transforms where necessary
614      * controls are initial/final SST, SSS (can be extended; need to check
615        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
616    o mdsio: filename info to both stderr, stdout
617    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
618      from sign change
619    
620    checkpoint55j_post
621    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
622      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
623    o add consistent build directories and .cvsignore files to verification
624    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
625    o make all subroutines 30 or less characters in length for certain older
626      compilers to work (a thorough search only turns up two routines in
627      pkg/ptracers)
628    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
629      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
630    
631    checkpoint55i_post
632    o change arrays for total vertical diffusivity (2.D if explicit,
633      3.D if implicit) ; each ptracer uses its own background value.
634    o added mnc/NetCDF output capability to ocn_compon_interf
635      - added bits to verification/cpl_aim+ocn so that it can run on
636        ITRDA and other clusters without the mpirun "-wd" option
637    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
638      configuration
639    o give MNC the ability to create additional files rather than
640      exceeding a specified file size limit "MNC_MAX_FILESIZE"
641      - the default is just less than 2GB which is a practical limit
642        on many systems
643    o Compute the non-local term using either KPP vertical diffusivity (=default)
644       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
645    
646    checkpoint55h_post
647    o add verification test "vermix"
648    o remove all the *_ioinc flags and replace with the single global
649      outputTypesInclusive flag
650    o allow to set a vertical profile of vertical diffusivity for T & S
651    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
652    o useMNC moved from data.mnc to data.pkg
653    
654    checkpoint55g_post
655    o Renaming carbon AD experiments to comply with testreport conventions
656    o Updating adjoint of Held-Suarez hs94.1x64x5
657    o Fixing directives for non-ECCO forward_step, after ECCO directives
658      have been fixed to avoid recomp. of do_oceanic_phys
659      Works well for global_ocean.90x40x15,
660      but recomp. issue remains for carbon
661    o Updating adjoint output for natl_box_adjoint after
662      pkg/ecco has been modified (see taga c55d_post)
663    
664    checkpoint55f_post
665    o rename to timeave_init_fixed
666    
667    checkpoint55e_post
668    o some delicate re-shuffle of store directives to avoid one
669      extra call of do_oceanic_physics
670      affects ecco_the_main_loop.F, do_oceanic_physics.F
671      checkpoint_lev1_directives.h
672    o NB: this may break global_ocean adjoint temporarily,
673      but it is clear how to fix it. Will do later, need this now.
674    
675    checkpoint55d_post
676    o ECCO specific cost function terms (up-to-date with 1x1 runs)
677    o ecco_cost_weights is modified to 1x1 runs
678    o modifs to allow observations to be read in as
679      single file or yearly files
680    o enable to read exf forcing fields as either
681      single file or yearly files (flag useExfYearlyFields)
682    checkpoint55d_pre
683    
684    o switch between 2-level and 3-level checkpointing
685    o add ability of MNC to write local and "partial" (eg. 2D slices where
686      the full 3D field is never actually stored) arrays to NetCDF files
687      with the correct (that is, the complete multi-dimensional) set of
688      array indicies
689      - used in mom_vecinv() to write the diagFreq output
690      - tested (demonstrated) in verification/aim.5l_cs
691    o further mnc-ification
692      - add verification/lab_sea to the list with mnc setups
693      - fix undefined mnc v-names in cd_code
694      - add kpp to mnc output (both snapshot and timeave)
695    o non-hydrostatic code
696      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
697        in calc_gw.F
698      - defaults to viscAh
699      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
700        friction or Leith) in non-hydrostatic mode, as long as there is
701        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
702    o pkg/cost
703      extend simple cost functions to treat time mean quantities
704      (T,U,V) via cost_accumulate_state from cost_tile
705    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
706        be 2 times larger than the minimum size the advection scheme requires.
707        now get a perfect conservation of salt in advect_cs test-exp (updated)
708    o GGL90 (Gaspar's TKE mixed layer)
709      - add horizontal diffusion of TKE, requires exchanges in
710        do_fields_blocking_exchanges, horizontal diffusivity is zero by
711        default. In OPA there is no horizontal diffusion of TKE but the
712        mixing coefficients are computed from a horizontal average of TKE of
713        6 points or so. I think that diffusion has a little more physical
714        justification.
715      - clean up ggl90_calc in the hope of reducing memory usage (this hope
716        was in vain)
717      - mask tke-variable in ggl90_init
718    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
719    o fix biharmonic diffusion on CS-grid.
720    o more obcs stuff
721      - added obcs_external_fields_load as an alternative to the EXF-pkg option
722        for reading boundary values. This routine is called from
723        obcs_prescribe_read
724      - updated obcs_check
725      - changed sponge layer relaxation parameter units for days to seconds
726      - turned off sponge layer by default
727      - changed argument list of OBCS_CALC to myTime+deltaTclock
728      - fixed about 35 bugs in obcs_external_fields_load
729    
730    checkpoint55c_post
731    o obcs stuff
732      - new runtime flags useOBCSprescribe, useOBCSbalance
733      - re-arranged obcs_calc
734      - moved exf_getobcs to obcs_prescibe_read
735        obcs_prescibe_read is called after ORLANSKI stuff
736        and independent of it (executable can contain all).
737      - updated obcs_check
738      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
739        These may be necessary only if tangential velocities are
740        prescribed at OB, not sure, needs testing.
741    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
742      which simplifies the calls and passes the ifc check-bounds test
743    
744    checkpoint55b_post
745    o add a 2D scalar, Z location, exchange_2 routine.
746    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
747      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
748      affects advect_cs results (for the wrong reason): update output.txt
749    o use a more standard discretization for biharmonic viscosity ;
750     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
751      affects results of dome set-up: update output.txt
752    o fix gad_advection.F (CubedSphere part), back to version 1.23
753    o fix bug in mom_vi_del2uv.F (CubedSphere part).
754    
755    checkpoint55a_post
756    o merged code to
757      * prescribe/read time-dependent open boundaries
758        (works in conjunction with exf, cal)
759      * sponge layer code for open boundaries
760      * each boundary N/S/E/W now has its own CPP option
761        (healthy for the adjoint)
762    
763    checkpoint55
764    o up-to-date adjoint of previous breaks
765      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
766      - global_ocean_ebm: adjoint still needs fix (TLM ok)
767      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
768      - carbon: * remove tr1-related adjoint verification
769                * add ptracer as control variable
770    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
771      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
772    
773    checkpoint54f_post
774    o in verification/carbin/ remove experiment related to
775      ALLOW_PASSIVE_TRACER (array tr1 etc)
776      code_ad/ input_ad/ results_ad
777    
778    o add two new packages
779      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
780        + subject to optimization (memory)
781      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
782        + subject to reordering (many GOTOs in the original code)
783        + so far opps is called for every (i,j) point, and then operates in
784          the vertical; one may want to reorder the scheme in order operate in
785          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
786          fields)
787    o overhaul of IO so that we now have flags for MDSIO and/or MNC
788      - all verification tests compile and run with linux_ia32_g77
789      - defaults are compatible with current input files--nothing
790        should change if you were not previously using MNC
791      - MNC output has been added in numerous places (eg. timeave)
792        but there are still a few writes not yet do-able with MNC
793        (this is in progress)
794      - flags now allow for either/or/both use of MDSIO and MNC and
795        documentation will soon follow
796      - numerous small formatting cleanups for ProTeX
797    o add version info (via BUILD_INFO.h) to MNC and stdout
798    
799    checkpoint54e_post
800    o add two new packages
801      - pp81 (Packanowski and Philander, 1981), Richardson number and
802        stratification dependent mixing
803      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
804      - these scheme operate in a similar manner as KPP (without ghat, of
805        course), however there is only one diffusivity that is used for both
806        temperature and salinity (and passive tracers)ç
807    o add offline package
808    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
809      provided by Stephanie Dutkiewicz
810    o genmake2: add ability to search for C compilers and cleanup test output
811      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
812    
813    checkpoint54d_post
814    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
815    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
816      leading to additional shift by 5 days each year of integration
817       (i.e. leading to considerable offset over the years)
818    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
819    o start with no AB and no initial filtering (staggerTimeStep):
820      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
821    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
822      (external loading & cpl import/export stay in forward_step.F)
823    o update coupling interface to work with new staggerTimeStep
824    o change MDSIO ptracers_pickup.
825    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
826    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
827    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
828    
829    checkpoint54c_post
830    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
831      this affects (truncation error) output.txt of test-exp:
832       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
833    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
834    o change Qnet to always be the net heat flux, (+upward).
835      affects (truncation error) output of natl_box exp.: updated
836    o define the max number of passive tracers in PTRACERS_SIZE.h
837    o start to test mnc routinely in exp0
838    o add sea-ice loading (sIceLoad) as a new forcing field.
839    
840    checkpoint54b_post
841    o add testreport "-j JOBS" option for parallel builds (tested and pretty
842       impressive on Altix and Opteron systems)
843    o diagnostics can now write NetCDF files through the mnc package
844    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
845    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
846    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
847      affects (truncation error) output of lab_sea & natl_box exp.: updated
848    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
849    
850    checkpoint54a_post
851    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
852    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
853    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
854    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
855      + internal_wave (shift in writing cg2d_ini_res)
856    checkpoint54a_pre
857    
858    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
859      - modified verification/lab_sea and natl_box_adjoint accordingly
860    
861    checkpoint54
862    checkpoint53g_post
863    o prepare splitting of thermodynamics: store convect.counter in common block
864    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
865      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
866    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
867    o new parameter "nShapS": allow to treat differently S from T (nShapT)
868    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
869    o restore adjointability
870    
871    checkpoint53f_post
872    o modifications that affect AIM experiment results (update output.txt):
873      - no advection of S at top interface Nr (pkg/generic_advdiff)
874      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
875    o AIM pkg:
876      - include stability function into surf.Flux derivative relative to Tsurf
877      - calculate clear-sky radiation & surface temp. change (for diagnostics)
878    
879    checkpoint53e_post
880    o merged cylindrical coord configuration
881    o added rotating_tank experiment
882    checkpoint53e_pre
883    
884    checkpoint53d_post
885    o faulks upgraded: re-generate output.txt that have changed:
886       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
887    o Added Bryan and Lewis, 1979, vertical diffusivity profile
888    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
889    o added Sadourny discretization of Coriolis
890      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
891      - re-enabled use of omega3 (useAbsVorticity)
892    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
893      vector-invariant equations
894      - note: does *NOT* yet use same variable visc. for no-slip BC's.
895    o recoded the lateral boundary conditions for non-hydrostatic w, this time
896      hopefully without new bugs
897      - still to do: biharmonic friction for non-hydrostatic w
898    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
899    o regenerated output for global_ocean_ebm (using -ieee)
900    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
901      of mom_common/
902      - simple re-arrangement of instructions within computing loop
903    checkpoint53d_pre
904    
905    checkpoint53c_post
906    o new version of coupler for AIM+thSIce and Ocean models
907     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
908     - land: change Evaporation of snow
909     - aim with thSIce: fix bug in snow-precip.
910    o changes to calc_gw.F
911     - bug fix for w^2 term near the bottom boundary
912     - (hopefully) improve the lateral slip boundary condtions for use with
913        partial/looped cells
914      - because the bug fix changes two verification experiments anyway (exp5
915        and plume on slope), change the lateral boundary condition from half slip
916        to the value of no_slip_sides
917    o ebm package wasnt quite up to the parallel task. Fixed that.
918    o Adjoint of EBM package + verification
919      * TLM OK
920      * ADM not sufficient accuracy yet (needs further testing)
921    
922    checkpoint53b_post
923    o Commiting new energy balance model to repository
924      * package is pkg/ebm
925      * verif. is verification/global_ocean_ebm
926      * references are in ebm_driver.F
927    C      * X. Wang, P. Stone and J. Marotzke, 1999:
928    C        Global thermohaline circulation. Part I:
929    C        Sensitivity to atmospheric moisture transport.
930    C        J. Climate 12(1), 71-82
931    C      * X. Wang, P. Stone and J. Marotzke, 1999:
932    C        Global thermohaline circulation. Part II:
933    C        Sensitivity with interactive transport.
934    C        J. Climate 12(1), 83-91
935    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
936    C        Destabilization of the thermohaline circulation
937    C        by atmospheric eddy transports.
938    C        J. Climate 7(12), 1870-1882
939    o Will need long integration testing.
940    checkpoint53b_pre
941    
942    o created pkg/mom_common in preparation for variable viscosity code
943    o renamed and split ini_mnc_io
944    o pkg/land: only liquid water can diffuse or run-off
945    o AIM using land: soil wetness availability account for snow
946    o added printMapIncludesZeros to EEPARMS namelist
947    
948    checkpoint53a_post
949    o restore TAMC compatiility for exf_constants.h
950      (no usage of _d in .h)
951    o Additional storing in KPP in an attempt to fix
952      TAMC problem with adjoint of KPP code.
953      (no success...)
954      Identical code works fine with TAF.
955    o Fixed verification/natl_box_adjoint experiments.
956      Initial conditions for Experiments 4 and 5 are now
957      set to "SEAICE_initialHEFF=0", which is more reasonable,
958      and hence gives results closer to that of Experiment 2.
959      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
960    
961    checkpoint53
962    o stable checkpoint with up to date adjoint
963      TLM tests only run for 1st grdchk at the moment. Its unclear if
964      this is a code problem or a problem with resetting code for g_
965      variables that is being autogenerated wrong.
966      Otherwise:
967       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
968       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
969         are both still in chaos following their security messes.
970    
971    checkpoint52n_post
972    o various build (mostly genmake2) changes including:
973      - ability to build/run more easily within Cygwin and MacOS X
974      - more complicated Makefiles with a stronger dependence on Gnu Make
975    o pkg/seaice modifications
976      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
977        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
978        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
979      - changed proxy for geostrophic velocity and updated
980        verification/lab_sea/results/* accordingly
981      - removed ADI dynamic solver from pkg/seaice
982      - replaced all occurrences of 1/CSTICE or 1/CSUICE
983        they caused a segmentation fault under certain circumstances
984      - removed unused field WATR
985    o bug fix in exf-package:
986      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
987         now reflect that.
988    o small fixes in the cal-package:
989      - set reference date to first of January for the 'model'-calendar
990      - failing of cal_CheckDate in cal_FullDate now actually results in a
991        warning
992    o small modifications in exf-package to increase flexibility:
993      - change climtempfreeze from a constant to a runtime parameter that
994        is specified in data.exf_clim (default = -1.9)
995      - introduce runtime parameter windstressmax (default = 2.0) that is
996        specified in data.exf
997    o fix in pkg/thsice:
998      - update Evap (Tsf changes) to be consistent with Latent heat flux
999      - maintain snow precipitation unchanged (even if Tsf >=0).
1000     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
1001    
1002    checkpoint52m_post
1003    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
1004      this does not change any of the results, because myIter=0 in swfrac always
1005      lead to jwtype=2 (the default anyway), but the call makes little sense
1006      as a default
1007    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
1008    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
1009      atmospheric model (AIM) to use it ; add a "slab ocean" component.
1010    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
1011    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
1012    o extending useSingleCpuIO option to work with new exch2 I/O format
1013      - old-style, missing-tile I/O is still accessible by defining CPP
1014        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
1015    o monitor package can write to NetCDF files and/or STDOUT
1016    o fix re-definition bug in MNC_GRID_INIT_ALL()
1017    o doc/api_reference added
1018      - a framework for building an API Reference Manual using all
1019        the "protex" comments embedded in the code
1020      - see pkg/generic_advdiff, pkg/mnc for examples
1021    o MNC:
1022      - make myThid the last argument for all subroutines
1023      - new default for the grid files: NO halos
1024      - add useMNC and other run-time flags
1025      - separate per-file-group handling of the unlimited dimension
1026      - early initialization of MNC w/ flags read at the eeboot stage
1027        and lookup tables set in initialize_fixed
1028      - write all MNC output to a freshly-created directory
1029    o thermodynamics sea-ice (thsice) is now tested with testreport.
1030    o test exp. advect_cs: use the standard cs32 grid ; update output.
1031    o Added functionality to grdchk:
1032      pick global i,j,k position (or nearest wet) where to perform check.
1033    
1034    checkpoint52l_post
1035    o new land formulation:
1036      a) use ground enthalpy as prognostic variable to ensure exact
1037         energy conservation.
1038      b) account for water temperature and for latent heat of freezing
1039         in all processes (rain, run-off, ground storage)
1040      c) compute surface and ground temperature implicitly.
1041    o aim_v23 modification for new land model:
1042      a) Treat separately land / ocean / sea-ice surface fluxes
1043         to allow implicit computation of land & sea-ice surface temp.
1044      b) add snow precipitation.
1045    checkpoint52l_pre
1046    
1047    o fix problem (when 1 tile is empty) in min/max monitor.
1048    o fix bug in timeAve (u,vZetatave in common block)
1049    o no restoring terms under ice for pkg/seaice
1050    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
1051    o bug fix for pkg/seaice pickups
1052    o change MNC call locations and add coordinate attributes
1053    o mask vorticity at the corner ; affects global_ocean.cs output
1054    o fix ini_curvilinear_grid ; test CS experiments with mpi
1055    o aim.5l_cs: modify sea-ice fraction input file ; update output
1056    o exf: Adding simple range check routine for exf fields after read
1057    
1058    checkpoint52k_post
1059    o removed top-level directory "diags"
1060      - we migrated these functions to pkg/timeave a long time ago
1061    o fixed bug introduced in pkg/monitor
1062    o accuracy ctrlprec = 32 insuffient for gradient checks using
1063      averaged fields (I/O via cost_averages)
1064      -> use ctrl.h in active_file*.F to control I/O precision.
1065    o paramter list of CALL ADTHE_MAIN_LOOP
1066    o added initial do_the_model_io to ecco
1067    o set all ...Freq to zero after cost_final
1068      taveFreq, dumpFreq, pChkptFreq
1069    o MAIN and ECCO differentiability restored
1070    
1071    checkpoint52j_post
1072    o fix nchklev in tamc.h for global_ocean...
1073    o Bringing flow and store directives up-to-date
1074    o Really weird thing!
1075      call do_the_model_io from the_main_loop with parameters
1076      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
1077      TAF places a faulty re-call of initialise_varia
1078      after cost_final call which should not be there!
1079    checkpoint52j_pre
1080    
1081    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
1082      error messages
1083    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
1084    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
1085      debug output
1086    o modfied mdsio_writefield.F to handle non-global files under exch2
1087    o update AIM Cubed-Sphere exp (aim.5l_cs):
1088      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
1089    o update AIM Equatorial Channel exp:
1090      use standard aim_v23 pkg and change the SST fields to be more realistic.
1091    o globalFile now works with exch2
1092    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
1093      mon_vort3.F to make exch2 friendly with >1 tile per cube face
1094    o limit timeave output for hi-res integrations
1095    
1096    checkpoint52i_post
1097    o removed CPP_EEOPTIONS.h from verification/*/code
1098    o updated the tiling for global_ocean_pressure
1099    checkpoint52i_pre
1100    
1101    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
1102      the old pkg/aim).
1103    
1104    checkpoint52h_pre
1105    o shortened offending lines in exch2_send_rx?.template
1106    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
1107    o genmake2: add build & execute test for NetCDF code
1108    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
1109      old grid files, moved CPP_EEMACROS.h to pkg/exch2
1110    o added useSingleCPUIO flag to monitor.F and mon_out.F
1111    o added temporary hack for sea-ice dynamics on the cube:
1112      metric terms are ignored and it is assumed that
1113      there is no sea-ice on cube faces 1, 2, 4, and 5.
1114    
1115    checkpoint52f_post
1116    o added exch2 cube routines to pkg/exch2
1117    o modified hs94.cs-32x32x5 to use it
1118    o added new grid files to hs94.cs-32x32x5
1119    checkpoint52f_pre
1120    
1121    checkpoint52e_post
1122    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
1123      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
1124    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
1125      to work with implicit vertical advection and AB ;
1126    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
1127    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
1128     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
1129    checkpoint52e_pre
1130    
1131    o fix bug in impldiff when Nr=1 or Nr=2.
1132    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
1133    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
1134    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
1135      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
1136    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
1137    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
1138    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
1139    
1140    checkpoint52d_post
1141    o re-tiled many expts to allow comparison in multi-processor mode
1142      - updated output accordingly
1143      - changed hs94.128x64x5 to use intial T from file rather than use the
1144        random number generator
1145    o add infrastructure in model routines for fizhi and gridalt packages
1146    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
1147    o changes to permit hi-res, cubed-sphere, configuration
1148      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
1149      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
1150      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
1151        of surface winds for the cube
1152      (A verification experiment, based on global_ocean.cs32x15, but with
1153       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
1154       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
1155       complete with example surface forcing files and matlab scripts to look
1156       at the output and compare it with that of global_ocean.cs32x15.)
1157    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
1158       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
1159       to conform to the common rule.
1160    o check-in the first version of the coupler + interfaces for multi-components
1161       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
1162       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
1163       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
1164       - ocean and atmos. share the same horizontal grid (no interpolation).
1165       - exchanges between component and coupler is done in forward_step
1166    o new verification experiment, cpl_aim+ocn:
1167       coupled ocean - AIM atmosphere on cs32 grid.
1168    
1169    checkpoint52d_pre
1170    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
1171    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
1172    
1173    checkpoint52c_post
1174    o Fixing OPTIONS files for use of exf:
1175      - ALLOW_ECCO not needed
1176      - ECCO_CPPOPTIONS.h should not be included from
1177        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
1178        as has been the case in the past
1179      - All cal/exf related options are currently set in
1180        single header file. Should remain so until we
1181        agree on a consistent new policy.
1182    o Removed all CPP options for cal package.
1183      cal has no more CPP options.
1184    o modified STOREs in GAD_ADVECTION
1185    o corrected key comp. for passkey
1186    
1187    checkpoint52b_post
1188    o new version: "thsice" of thermodynamic sea-ice pkg:
1189     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
1190     - modify fluxes but do not change theta directly;
1191     - light cleaning of bulk_force pkg (still needed with thsice).
1192     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
1193       + output_thsice.txt to test thsice & bulk_force pkgs.
1194    o put back grid & coriolis monitor output.
1195    checkpoint52b_pre
1196    
1197    o call "do_the_model_io" at the beginning (=> dump initial state)
1198    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
1199    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
1200      (need info on NUMBER_OF_PTRACERS)
1201    o missing PTRACERS headers in some routines
1202    o default tamc.h in pkg/autodiff supposed to crash
1203      to ensure proper customization
1204    
1205    checkpoint52a_post
1206    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
1207      - moved surfaceTendencyTice from pkg/seaice to main code
1208      - subroutine FREEZE_SURFACE now limits only surface temperature
1209        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
1210        => new output.txt for global_ocean.cs32x15 & global_with_exf
1211      - keep the old version of FREEZE for backward compatibility;
1212        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
1213      - corresponding modifs for TAF directives
1214    o added surface flux output variables to TIMEAVE_STATVARS
1215    o time-averaged output for pkg/ptracers
1216    o fix problem with ECCO-related divided adjoint
1217      snapshot file was missing some ad-variables,
1218      but no warning issued by TAF
1219    
1220    checkpoint52a_pre
1221    o some bug fixes for #undef REAL4_IS_SLOW
1222    
1223    checkpoint52 = ecco_c52_e35
1224    o after testing adjoints of checkpoint51u_post
1225    
1226    checkpoint51u_post
1227    o this is the post-merge tag of the ecco-branch
1228      (needs another clean checkout and re-testing)
1229    o various natl_box_adjoint configs and results
1230      but no input fields
1231    o obcs adjoint not yet merged!
1232    o adding ECCO global 1x1 and 2x2 degree configs
1233    o updated/extended some store directives for seaice
1234    o pkg/ecco now containes ecco-specific part of cost function
1235    o top level routines the_main_loop, forward_step
1236      supersede those in model/src/
1237      previous input data.cost now in data.ecco
1238      (new namelist ecco_cost_nml)
1239    o in ctrl/ cleaned some cross-dependencies and updated CPP options
1240    
1241    checkpoint51t_post
1242    o this is the pre-merge tag of the ecco-branch
1243    
1244    checkpoint51s_post
1245    o cleanup: removed various obsolete #define-s
1246    o pkg/grdchk
1247      - renamed 'ph-grd 3' to 'grad-res'
1248      - merged from ecco-branch
1249        (remaining bug fixes for obcs gradient checks)
1250      - additional high-precision output for testreport
1251        (grep for 'precision_grdchk_result')
1252    
1253    checkpoint51r_post
1254    o cleaned up or removed CPP_OPTIONS.h files
1255    o updated results for some of the tests to reflect the new
1256      optfiles (-ieee: -O0 instead of -O3)
1257    
1258    checkpoint51q_post
1259    o cd_code:
1260      - moved cd_scheme.F -> cd_code_scheme.F
1261      - separate read_checkpoint from cd_code_ini_vars.F
1262      - separated cd_code part from write_checkpoint
1263      - updated AD_SOURCE, generated .flow
1264      - added CD_CODE_VARS.h to the_main_loop
1265      - Moving cd_code specific store dir.s to pkg/cd_code
1266    o ctrl package totally restructured
1267      - pack/unpack now optional and decoupled from
1268        xx_/adxx_ I/O
1269      - ctrl_pack/unpack cleaned
1270        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
1271      - confined inclusion of AD_CONFIG.h to where necessary.
1272    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
1273    
1274    checkpoint51p_post
1275    o create initial cd_code package
1276      - WARNING: the initialization of fields within packages
1277        is broken because INI_FIELDS (where READ_CHECKPOINT is
1278        called) is called *before* PACKAGES_INIT_VARIABLES.
1279        This seems to be backwards since
1280        1) its important to initially zero the entire field including
1281           the "halo" region
1282        2) zeroing needs to be done *before* reading pickup info
1283           and the pickup call might or might not happen in any
1284           particular run
1285      - this needs an overhaul for R2
1286    o cleanup verification/*/code/GMREDI_OPTIONS.h
1287    o cleanup testreport
1288    
1289    checkpoint51o_post
1290    o bringing AD-related verif's up to date with genmake2
1291      - carbon/
1292      - global_ocean.90x40x15/
1293      - hs.94.1x64x5/
1294      - (front_relax/ )
1295    o (more) consistent directory structure for AD-related verif.'s
1296    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
1297    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
1298    o bug fix in find_alpha.F for MDJWF:
1299      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
1300        change rho -> rho-rhoConst
1301      - replace call find_rho to find_rhonum
1302    o initialisation of rFlx extended to full array (required by TAF)
1303      and shifted to thermodynamics
1304    o removed PTRACERS.h in ptracers routine
1305    o added surfacetendencyPtr to S/R parameter list pracers_forcing
1306    o Correcting initialisations for fVerU, fVerV.
1307    o helping TAF to recognize dependency on kUp for
1308      fVerU, fVerV
1309    o Replacing delZ by delR in pkg/ctrl/
1310    checkpoint51o_pre
1311    
1312    o undid all of cp51 pending some cleanups and discussion
1313    o added the [#include "AD_CONFIG.h"] statement to all files that need
1314       it for adjoint/tl #defines
1315     o re-worked the build logic in genmake2 to support AD_CONFIG.h
1316     o removed tools/genmake since it no longer works
1317    
1318    checkpoint51n_post
1319    o modifications to make FREEZE flux visible to pkg/kpp
1320      - moved surfaceTendencyTice from pkg/seaice to main code
1321      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
1322      - subroutine FREEZE now limits only surface temperature
1323        (this means new output.txt for global_ocean.90x40x15,
1324         global_ocean.cs32x15, and global_with_exf)
1325    o added surface flux output variables to TIMEAVE_STATVARS
1326    
1327    checkpoint51n_pre
1328    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
1329    o added [#include "AD_CONFIG.h"] to all files that use the following
1330      defines:
1331      - ALLOW_ADJOINT_RUN
1332      - ALLOW_TANGENTLINEAR_RUN
1333      - ALLOW_ECCO_OPTIMIZATION
1334    
1335    checkpoint51m_post
1336    o incorporating changes to get TAMC/TAF working in genmake2
1337      - added new TAMC/TAF targets to the Makefile
1338      - various cleanups related to package handling
1339      - these changes should have no impact on the forward model
1340    
1341    checkpoint51l_post
1342    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
1343     - faster algorithm for cal_addtime.F
1344     - higher precision arithmetic, where needed
1345     - pkg/exf *startdate variables changed from calendar date to
1346       model integration time
1347    
1348    checkpoint51l_pre
1349    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
1350    o enable to apply restoring on S & T only in a latitude band.
1351    o update output (external_forcing_surf modif. change truncation errors)
1352       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
1353    
1354    checkpoint51k_post
1355    o change default to: useNHMTerms=.FALSE.
1356     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
1357       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
1358     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
1359        exp1, ideal_2D_oce
1360     - change data file of oceanic exp (leave the results unchanged for now)
1361       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
1362    o set gravitySign automatically according to the vertical coordinate used
1363      (and change sign: back to "logical" value: +1 when R increases downward)
1364    o added an include barrier to the default CPP_OPTIONS.h and
1365      removed the #include "PACKAGES_CONFIG.h" from it
1366    o fix a bug in mom_fluxform (from chk51j_post)
1367    
1368    checkpoint51j_post
1369    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
1370    o adjusted some flow directives (dynamics, thermodynamics)
1371    o added cubed-sphere case to test cost function
1372    o heckpoint_lev?_directives.h now include
1373      pkg-specific directives, whenever those are enabled.
1374    o Moving pkg-specific flow directives to corresponding pkg
1375      Moving pkg-specific differentiation list to corresponding pkg
1376      Moving pkg-specific checkpoint-lev storing to corresponding pkg
1377      ---> conventions are
1378           - pkg_ad.flow
1379           - pkg_ad_diff.list
1380           - pkg_ad_check_lev?_dir.h
1381    
1382    checkpoint51i_post
1383    o merge of the branch-genmake2
1384      - knowingly breaks the older genmake
1385      - automatic generation of all ALLOW_${PKG_NAME} defines
1386      - new testreport supersedes older testscript
1387    o large number of package inclusion and header cleanups
1388    checkpoint51i_pre
1389    
1390    o new output for adjoin of global ocean vector invariant
1391    o fix for checkpoint of thermodynamic seaice and bulk_force
1392    o Steph gchem various cleanups
1393    
1394    checkpoint 51h_pre
1395    o fixed some single quotes
1396    o modify gchem pkg to be more versatile
1397    o modifications to clean up dic pkg
1398    o add pkg/cfc
1399    
1400    checkpoint51g_post
1401    o provide links for ARPACK and ADM*TLM
1402    o start removing verification/vero/
1403    o update AD-related stuff
1404      (in particular some IF-statements in model/src/ routines)
1405    o adding to verification/global_ocean.90x40x15/ adjoint of
1406      vector invariant setup
1407    
1408    checkpoint51f_post
1409    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
1410    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
1411      of tracer Green's fucntions for ocean inversion project.
1412    
1413    checkpoint51f_pre
1414    o Added on-the-fly spatial interpolation capability
1415        "USE_EXF_INTERPOLATION" to pkg/exf.
1416      - This is a temporary Cartesian-grid hack until
1417        the super-duper ESMF coupler becomes available.
1418      - See verification/global_with_exf/README for usage example.
1419      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
1420        flags and modified pkg/seaice accordingly.
1421    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
1422        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
1423        non-local transport term.
1424    
1425    checkpoint51e_post
1426    o pkg/mom_vecinv:
1427      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
1428      - add time-ave diagnostic of vorticity advection.
1429    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
1430    o atmospheric geopotential: - include water vapor effect;
1431                                - use p^kappa in p* scaling.
1432    o land pkg: read initial state from files.
1433    o AIM : add stratospheric drag in the upper level
1434    
1435    checkpoint51d_post
1436    o change function ILNBLNK (=> last non-blank char.) to return zero
1437      (instead of the string length) when the string. char is empty
1438    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
1439    o modif's to restore TAMC compatibility
1440      - avoid "_d" constructs in PARAMETER declarations
1441      - avoid interrupting lines by comment lines
1442    o Use cluster local disks for purely local I/O
1443      vs. globally visible disks needed for ctrl stuff
1444      (merged from ecco-branch)
1445      - new active_file_loc... and mdsio_..._loc routines
1446      - affected packages: autodiff, ctrl, grdchk, mdsio
1447    
1448    checkpoint51c_post
1449    o introducing integer flag debugLevel
1450      - debLevZero: suppress all output
1451      - debLevA: standard
1452      - debLevB: equivalent to current debugMode=.TRUE.
1453    o introducing pathname variable mdsioLocalDir for mdsio
1454      that can be specified at runtime
1455      (relevant for cluster I/O to local disk)
1456    `
1457    >>>checkpoint51b_post
1458    adjoint of ptracers
1459    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
1460    o extended state in checkpoint_lev?, etc.
1461    o alternative ctrl/cost with tr1 or ptracer
1462    o new comlev1_bibj_ptracers
1463    o new ptracers.flow
1464    o made ptracers_forcing same as external_forcing_s
1465    o added verification for adjoint with ptracers
1466      - adm. grdchk fail so far
1467      - tlm. grdchk OK
1468      - checked tapelev/comlev recomputations: OK
1469    <<<checkpoint51b_pre
1470    
1471    checkpoint51a_post
1472    o added code for biogeochemistry package
1473      - new pkgs: dic, gchem
1474      - new subroutine in ptracers
1475    o modify code for biogeo packages
1476      - in model/src and pkg/ptracers
1477    
1478    checkpoint51
1479    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
1480      - autodiff, ctrl, exf, grdchk, seaice
1481      kept separate packages
1482      - cost, ecco, obcs
1483    o updating verification/internal_wave, verification/lab_sea
1484      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
1485    
1486    checkpoint50i_post
1487    o Preparing next differentiable checkpoint and sync
1488      of MAIN vs. ecco-branch
1489      - 1st step: this one is differentiable
1490      - 2nd step: next(! not this) checkpoint will have updated packages
1491                  from ecco-branch)
1492    
1493    checkpoint50h_post
1494    o new package "land": provide surface BC for AIM.
1495    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
1496    o AIM: use true log-P extrapolation for near surface temp (= as in
1497        F.Molteni paper) ; update aim.5l_cs output.
1498    o New variable in PARM03 for more flexible pickups
1499    o somewhat cleaned package initialisation sequence for
1500      ctrl/ cost/ ecco/ in packages_... routines
1501    
1502    checkpoint50g_post
1503    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
1504      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
1505      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
1506        made the default because of faster convergence than ADI
1507    
1508    checkpoint50f_post
1509    o exf totally restructured
1510      - replaced all exf_set_ routines by one generic exf_set_gen.F
1511        and made sure it's still differentiable
1512      - split exf_getffields.F into new exf_bulkformulae.F
1513      - exf_inscal_/exf_outscal_ suffixes consistent with field names
1514      - updated adjoint/makefile and relevant verif. accordingly
1515    
1516    checkpoint50f_pre
1517     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
1518          + change Evap over land. (update aim.5l_cs output)
1519     o added missing .cvsignores and made uniform across expts
1520     o changed configuration of tidal_basin_2d expt
1521     o added pkg/debug functions for tracing code in fatal crashes
1522     o tidied pkg/monitor to use MONITOR_OPTIONS.h
1523     o new fn in pkg/monitor to stop model if solution grows too big
1524     o removed lots of single quotes from comments
1525    
1526    checkpoint50e_post
1527    o make KPP work with PTRACERS
1528     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
1529       nearly a copy of kpp_transport_s
1530     - there is no analogue to SurfaceTendencyS, so I have to use
1531       gPtr(of the surface layer) instead
1532    o add a new platform SunFire+mpi (SunFire 15000) to genmake
1533    checkpoint50e_pre
1534    
1535    checkpoint50d_post
1536    o change kpp output from multiple-record state files to single-record state
1537      files analogous to write_state.F
1538    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
1539      analogous to the cg2d-related output.
1540    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
1541      so that writing to internal file fn (with length 512) fails.
1542    checkpoint50d_pre
1543    
1544    checkpoint50c_post
1545    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
1546    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
1547    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
1548    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
1549    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
1550    
1551    checkpoint50c_pre
1552    Merging from release1_p13:
1553    o bug fix for pkg/seaice dynamic solver
1554    o Added SEAICE_initialHEFF to pkg/seaice
1555    
1556    checkpoint50b_post
1557    o store u*,v* in gU,V instead of in guNm1,gvNm1
1558    o in order to put the momForcing out of the Adams-Bashforth:
1559      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
1560      to timestep.F
1561    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
1562    o re-generate output for highly sensitive test-exp:
1563       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
1564    
1565    checkpoint50b_pre
1566    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
1567    o corrected CPP option mismatch in exf_Bulk... functions for case
1568      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
1569    
1570    checkpoint50a_post
1571    o Bug fix for merging between c50 and KPP.
1572      ikey was passed from thermodynamics to kpp_calc via
1573      common block rather than being recomputed in kpp_calc,
1574      in contradiction with new key itdkey.
1575      New key ikppkey created, and tamc.h headers updated.
1576    
1577    checkpoint50
1578    - 2nd step of merge with ecco-branch:
1579      merge changes in ecco-branch back into main trunk
1580    - bug fix in find_alpha
1581    - more storing in gmredi_calc_tensor.F, kpp_routines.F
1582    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
1583    - merged some sliced AD support routines
1584    
1585    checkpoint49
1586    merged from ecco-branch:
1587    o exf:
1588      - Enable initialisation of forcing fields to constant
1589        (runtime) values.
1590      - in exf_getffields.F
1591        Reduce i-/j-loop to interior domain, discarding overlaps.
1592        That also fixes wrong TAF-key computations for key_1, key_2
1593        with bulf formulae.
1594      - exf_init.F modify #ifdef for exf_init_evap
1595      - exf_getffieldrec.F, ctrl_getrec.F
1596        The following INT-usages are not safe:
1597          fldsecs  = int(fldsecs/fldperiod)*fldperiod
1598          fldcount = int(fldsecs/fldperiod) + 1
1599        and were modified.
1600    o autodiff: checkpoint_lev...
1601      - updated storing for bulk formulae (some arrays were missing)
1602      - added state for seaice package
1603      - synchronized with main branch
1604    o DIVA:
1605      Modif.s in
1606      - the_main_loop.F
1607      - the_model_main.F
1608      and added cost_final_restore.F cost_final_store.F
1609      o With these changes, it is possible to fully separate
1610        the first forward run to compute the cost function (mdthe_main_loop)
1611        and adjoint runs over individual DIVA intervals (adthe_main_loop)
1612        into separate model executions.
1613        This enables better tuning of DIVA to given queue sizes.
1614      o Loss of cost function value in consecutive DIVA runs is
1615        fixed by storing to 'costfinal' file.
1616      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
1617        beginning/end of adjoint integration is accounted for.
1618      The current changes apply to TAF-1.4.26.
1619      TAF has one remaining bug, requiring one manual change
1620      (see MITgcm manual).
1621    o cal: synchronized between MAIN and ecco-branch
1622    
1623    checkpoint48i_post
1624    o Changes to restore differentiability of code w.r.t. previous tag
1625      (mostly adding new routines to make list and replacing
1626      pressure by totPhiHyd).
1627    o Updated and merged grdchk package
1628      - has both ADM and TLM checks
1629      - works for single- and multi-proc.
1630      - output cleaned
1631      - worked successfully for parallel DIVA
1632    o genmake:
1633      - Adding -platform=SP4
1634      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
1635    o Modif. for DIVA:
1636      ctrl_unpack should not be called in intermediate DIVA interval.
1637      (similar thing would apply for active files such as
1638      tbar, sbar, psbar, which should not be reinitialised;
1639      only relevant for ecco-branch)
1640    
1641    checkpoint48h_post
1642    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
1643    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
1644    o Added SEAICE_initialHEFF to pkg/seaice
1645    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
1646    
1647    checkpoint48g_post
1648    --- EOS:
1649    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
1650      store total Potential in totPhyHyd for diagnostics & EOS.
1651    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
1652    --- Pressure/geopotential gradient:
1653    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
1654    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
1655      ( changes results of global_ocean_pressure )
1656    o NLFS + z-coord.: add eta*Rho' contribution.
1657    o accurate phiHyd when using interface-W at the middle between 2 centers
1658     ( changes results of ideal_2D_oce )
1659    o includes r* 2nd term in potential gradient.
1660    
1661    checkpoint48f_post
1662    Merging from release1_p12:
1663    o Modifications for using pkg/exf with pkg/seaice
1664      - improved description of the various forcing configurations
1665      - added basic radiation bulk formulae to pkg/exf
1666      - units/sign fix for evap computation in exf_getffields.F
1667      - updated verification/global_with_exf/results/output.txt
1668    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
1669      (SBO) core products, including oceanic mass, center-of-mass,
1670      angular, and bottom pressure (see pkg/sbo/README.sbo).
1671    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
1672      to avoid negative values in shallow regions.
1673      - updated verification/natl_box/results/output.txt
1674      - updated verification/lab_sea/results/output.txt
1675    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
1676    o Added useSingleCpuIO option (see PARAMS.h).
1677    o Updated useSingleCpuIO option in mdsio_writefield.F to
1678      work with multi-field files, e.g., for single-file pickup.
1679    o pkg/seaice:
1680      - bug fix in growth.F: QNET for no shortwave case
1681      - added HeffFile for specifying initial sea-ice thickness
1682      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
1683    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
1684      kpp_transport_t.F, forward_step.F, and the_main_loop.F
1685    o pkg/seaice:
1686      - adjoint-friendly modifications
1687      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
1688    
1689    checkpoint48e_post
1690    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
1691    o dynamics: change definition of computational domain & adapt mom_fluxform
1692      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
1693    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
1694        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
1695        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
1696        global_ocean.90x40x15 global_with_exf global_ocean_pressure
1697        inverted_barometer solid-body.cs-32x32x1
1698      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
1699    
1700    checkpoint48d_post
1701    o in preparation for r*:
1702     a) use pre-computed gradient of hydrostatic potential:
1703        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
1704     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
1705        => affects results of glob_oce_pressure (different truncation error)  
1706      update output.txt of ideal_2D_oce & global_ocean_pressure
1707    
1708    checkpoint48d_pre
1709    o in preparation for r*:
1710      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
1711      pass the 2 comp. of the grad. as arguments to momentum S/R.
1712      but for the moment, only used if it does not change the results.
1713    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
1714    
1715    checkpoint48c_post
1716    Modifications in treatment of initial flux forcing controls
1717    to avoid extra storing of flux fields.
1718    
1719    checkpoint48c_pre
1720    o Added tidal_basin_2d experiment (currently 1D!)
1721    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
1722    
1723    checkpoint48b_post
1724    o r* coordinate added in #ifdef NONLIN_FRSURF block.
1725     (modification to pressure gradient not yet implemented)
1726    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
1727      (for U & V) that are used for vertical advection of momentum.
1728    
1729    checkpoint48a_post
1730    o In preparation for r*, use temp. array to compute vertical transport
1731       in flux-form momentum pkg. => change results of few test-exp.
1732      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
1733                        lab_sea, natl_box & plume_on_slope
1734    
1735    checkpoint48
1736    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
1737    
1738    checkpoint47j_post
1739    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
1740    o moved adexch from forward_step to addummy_in_stepping
1741    o added exch in ctrl_map_...
1742    o aveFreq.=0. at end of cost_final to avoid overwrite in
1743      reverse checkpointing loop
1744    o Yet more changes in gmredi:
1745      * adgmredi_calc_tensor
1746        avoiding all recomputation of gmredi_slope_limit
1747      * adgmredi_x/y/rtransport
1748        added flag for excessive storing to avoid recomp. of
1749        u/v/rtans, dTdx/y/z
1750        -> this is not really necessary and very memory-consuming
1751      * adgmredi_slope_psi:
1752        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
1753      * gmredi_slope_limit
1754        re-activated full calculation of taperfct for case 'ac02'
1755    o updating verification/ adjoints of carbon, global_ocean.90x40x15
1756    
1757    checkpoint47i_post
1758    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
1759    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
1760      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
1761    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
1762    o gmredi: fix few bugs.
1763    
1764    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
1765    This will be a good checkpoint to plug into the ecco-branch.
1766    o few modif.'s to get latest version adjointed
1767      (mainly kick out code in ini_linear_phisurf)
1768    o modif's to run adjoint with exactConserv
1769    o case GM_BOLUS_ADVEC should be cleaned
1770      S/R gmredi_slope_psi should be cleaned
1771    o verification/carbon now has exactConserv=.TRUE.
1772    
1773    checkpoint47g_post
1774    o time-average AIM output: becomes independent from statvars time-average
1775      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
1776    o After TAF bug fix:
1777      Tested adjoint of gmredi package.
1778      Tests were done with checkpoint47 rather than with latest
1779      checkpoint47f_post since the latter is broken for the adjoint
1780      verification/carbon/ contains both ADM and TLM gradient checks.
1781    Here they are, before they get changed/lost/stolen.
1782    Mostly modif.'s to fix numerical sensitivities.
1783    Gradient checks OK for
1784    - GM_taper_scheme:
1785      * clipping
1786      * ac02
1787      * linear
1788      * glw91
1789      * dm95
1790      * ldd97
1791    - GMREDI_OPTIONS:
1792      * GM_VISBECK_VARIABLE_K
1793      * GM_NON_UNITY_DIAGONAL
1794      * GM_EXTRA_DIAGONAL
1795      * GM_BOLUS_ADVEC
1796    in conjunction with data.gmredi parameters to be checked in
1797    in a few minutes under verification/carbon/code/
1798    
1799    checkpoint47f_post
1800    Merging from release1_p10:
1801    o modifications for using pkg/exf with pkg/seaice
1802      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
1803        and SEAICE_EXTERNAL_FLUXES
1804      - pkg/exf CPP options EXF_READ_EVAP and
1805        EXF_NO_BULK_COMPUTATIONS
1806      - usage examples are Experiments 8 and 9 in
1807        verification/lab_sea/README
1808      - verification/lab_sea default experiment now uses
1809        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
1810    
1811    checkpoint47e_post
1812    o created a tag prior to creating a branch
1813    
1814    checkpoint47d_post
1815    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
1816      at the bottom boundary had an erroneous half slip boundary condition
1817    o added bottom drag and no slip boundary condition capabilities to
1818      oceanic pressure coordinates code
1819    o added new verification experiment global_ocean_pressure, this experiment is
1820      also described in the tutorial section of the manual
1821    checkpoint47d_pre
1822    
1823    checkpoint47c_post
1824    o Added a verification experiment for a global cubed-sphere ocean run
1825      -  verification/global_ocean.cubed32x32x30
1826      -  uses pkg/therm_seaice and pkg/bulk_forcing
1827    
1828    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
1829    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
1830      when using P-coordinate; only implemented for atmospheric config.
1831    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
1832      NOTES: requires option NONLIN_FRSURF to be "#define".
1833    o update advect_xz/results/output.txt (left from checkpoint44g_post)
1834    
1835    checkpoint47b_post
1836    Merging from release1_p9:
1837    o pkg/seaice
1838      - removed GOTO's and added taf directives
1839      - double precision constants to reduce the g77 (Linux)
1840        to F77 (SGI) differences reported in release1_p8
1841    o tools/genmake
1842      - added SGI options
1843    o verification/testscript
1844      - updated to that of checkpoint47a_post
1845    o verification/global_ocean.90x40x15/input/eedata
1846      - modified for SGI f77 compatibility
1847    o verification/lab_sea
1848      - added description of sea-ice model
1849      - added missing matlab routines
1850      - added test of thermodynamics parallelization
1851    
1852    checkpoint47a_post
1853    o new pkg: aim_v23
1854     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
1855       for now, keep the same surface forcing as before.
1856     - Part-Cell implemented into AIM; check that Heat & Water are conserved
1857     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
1858     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
1859    o add diagnostic of surface correction term in monitor output
1860    
1861    o bulk_force and therm_seaice
1862    - Two packages:  bulk_force (Bulk forcing)
1863      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
1864    - Earlier integration from Stephaine Dutkiewicz
1865      and Patrick Heimbach.
1866    - Two ifdef statements for compile time,
1867       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
1868    
1869    checkpoint47
1870    differentiable version of checkpoint46n_post
1871    o bug fix in quasihydrostaticterms
1872    o * "clean" adjoint code (in terms of extensive recomputations)
1873        can now be obtained for all GMREDI options (i.e. for
1874        - GM_VISBECK_VARIABLE_K
1875        - GM_NON_UNITY_DIAGONAL
1876        - GM_EXTRA_DIAGONAL
1877        - GM_BOLUS_ADVEC )
1878      * However, wrong gradient check problem remains unsolved.
1879      * New CPP options have been introduced for different
1880        tapering schemes
1881    o external_fields_load now part of differentiation list
1882    o pressure needs multiple storing;
1883      would be nice to have store_pressure at beginning or
1884      end of forward_step, e.g. by having phiHyd global (5-dim.)
1885      (NB: pressure is needed for certain cases in find_rho,
1886      which is also invoked through convective_adjustment).
1887    o recomputations in find_rho for cases
1888     'JMD95'/'UNESCO' or 'MDJWF' are OK.
1889    o #define ATMOSPHERIC_LOADING should be differentiable
1890    o ini_forcing shifted to begining of initialise_varia
1891    o Incorporating QNVS line search routines into MITgcm
1892      (this is separate code, and therefore not under pkg)
1893      lsopt/, optim/
1894    o Updated verification/carbon/
1895      - #define GM_VISBECK_VARIABLE_K
1896      - GM_taper_scheme    = 'ldd97'    
1897    
1898    checkpoint46n_post
1899    Merging from release1_p8:
1900    o verification/natl_box:
1901      updating new external_fields_load routine
1902    o New package: pkg/seaice
1903      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
1904      The sea-ice code is based on Hibler (1979-1980).
1905      Two sea-ice dynamic solvers, ADI and LSR, are included.
1906      In addition to computing prognostic sea-ice variables and diagnosing
1907      the forcing/external data fields that drive the ocean model,
1908      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
1909      The implied surface heat flux is then stored in variable
1910      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
1911      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
1912      non-local transport term.  Because this call precedes model
1913      thermodynamics, temperature under sea-ice may not be "exactly" at
1914      the freezing point by the time theta is dumped or time-averaged.
1915      N.B.: fairly large differences in accuracy occur across
1916            different platforms/compilers; comparison between
1917            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
1918            generated output gives:
1919       T           S           U           V
1920      C D M    c        m  s        m  s        m  s        m  s
1921      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
1922      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
1923      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
1924    
1925      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
1926    o GAD:
1927      - generated new common blocks to account for call of
1928        same gad routines with differing traceridentities
1929        (needed to modify tracerIdentity indices in GAD.h)
1930      - generated separate common blocks for case useCubedSphereExchange
1931        (Department of Futurology)
1932      - parameter lists to gmredi_?transport: added tracerIdentity
1933      - added new key indices to tamc.h
1934    o external_fields_load:
1935      - added this routine to TAF list
1936      - needed to make some common blocks global and additional storing
1937        along the same lines as exf package (checkpoint_lev?_directives.h)
1938    o exf:
1939      updated external forcing package
1940      - bug fixes carried over from ecco-branch
1941        (missing OBCS_OPTIONS.h in two routines)
1942      - enable easy to use "no forcing".
1943      - added exf I/O for atmospheric loading
1944      - added exf I/O for runoff data
1945      - transfered scaling between exf <-> MITgcm to exf namelist
1946    o Adding new verification experiment global_with_exf.
1947      This verification experiment is almost identical to the
1948      global_ocean.90x40x15 experiment, except that it uses
1949      the exf (and cal) package instead of the
1950      external_fields_load routine (cf README file).
1951    
1952    checkpoint46m_post
1953    o modified testscript to return -- when there are no lines of "%MON" output
1954    o added new flag "quasiHydrostatic" for QH mode
1955      and new routine quasihydrostaticterms()
1956    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
1957      New routine: mom_u_coriolis_nh()
1958    o fixed sign of non-hydrostatic metric terms in u and v equations.
1959      Depend on correct sign of gravitySign.
1960    o added work.pc* to .cvsignore in aim directories using ifc
1961    o introduced flag for controllin non-hydrostatic metric terms
1962    o removed gravitySign from PARM04
1963    o switched to g77/ifc from pgf77 in aim experiments
1964    
1965    checkpoint46l_post
1966    o made convective adjustment work with pressure coordinates:
1967     - changed the direction of k-loop in convective_adjustment.F for the
1968       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
1969     - adjusted the reference pressure k-index in convective_adjustment.F
1970     - adjusted the convection condition in convect.F (in analogy to
1971       calc_ivdc.F)
1972     - convective_adjustment no longer computes anything on the halos
1973     - removed the warnings about negative salinity from find_rho.F and
1974       find_alpha.F; instead the new routine look_for_neg_salinity, called
1975       at the beginning of find_rho, find_alpha, and find_beta, does a
1976       check of the entire slice, if CPP-option
1977       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
1978    checkpoint46l_pre
1979    
1980    checkpoint46k_post
1981    o fixed the verification/global_ocean.90x40x15 experiment:
1982     - new bathymetry (the world according to A., JMC, and M.)
1983     - new initial fields and forcing fields (*.bin files)
1984     - new POLY3.COEFFS (for the next release one should switch to a full
1985       equation of state: JMD95P or MDJWF)
1986     - fixed several errors and redundancies in the data file
1987     - experiment uses looped cells
1988     - added matlab directory with diagnostic scripts for plotting of output
1989    
1990    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
1991     - read AIM physics parameters from a file (data.aimphys)
1992     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
1993    
1994    checkpoint46j_post
1995    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
1996    o move wVel computation at the end of the time step, in S/R integr_continuity
1997    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
1998    o update timeave pkg for wVel diagnostic.
1999    checkpoint46j_pre
2000    
2001    checkpoint46i_post
2002    o Clean up AIM package (and keep the results unchanged):
2003      include CPP_OPTION and use IMPLICT NONE in all routines ;
2004      declare all the variables _RL ; use _d 0 for all numerical constants.
2005      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
2006    
2007    checkpoint46h_post
2008    o cleaned up the use of rhoNil and rhoConst.
2009      - rhoNil should only appear in the LINEAR equation of state, everywhere
2010        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
2011        and the dynamical equations are all divided by rhoConst
2012    o introduced new parameter rhoConstFresh, a reference density of fresh
2013      water, to remove the fresh water flux's dependence on rhoNil. The default
2014      value is 999.8 kg/m^3
2015    o cleanup up external_forcing.F and external_forcing_surf.F
2016      - can now be used by both OCEANIC and OCEANICP
2017    checkpoint46h_pre
2018    
2019     Added code to convert surface volume flux (fresh water) into
2020     a mass flux when using P coordinates in the ocean (OCEANICP).
2021     Note: It assumes you have set rho0=rhoConst=density of fresh water.
2022    
2023    checkpoint46g_post
2024    o Include a new diagnostic variable phiHydLow for the ocean model
2025      - in z-coordinates, it is the bottom pressure anomaly
2026      - in p-coordinates, it is the sea surface elevation
2027      - in both cases, these variable have global drift, reflecting the mass
2028        drift in z-coordinates and the volume drift in p-coordinates
2029      - included time averaging for phiHydLow, be aware of the drift!
2030    o depth-dependent computation of Bo_surf for pressure coordinates
2031      in the ocean (buoyancyRelation='OCEANICP')
2032      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
2033        Theta, Salinity, and Pressure in the parameter list. This routine is
2034        presently contained in find_rho.F. This routine does not give the
2035        correct density for 'POLY3', which would be a z-dependent reference
2036        density.
2037    o cleaned up find_rho
2038      - removed obsolete 'eqn' from the parameter list.
2039    o added two new verification experiments: gop and goz
2040      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
2041    checkpoint46g_pre
2042    
2043    checkpoint46f_post
2044    o Enable tangent linear (forward mode) gradient checks:
2045      - extended active file handling to g_... files
2046      - added TANGENT_SIMULATION to theSimulationMode
2047      - extended grdchk package accordingly
2048    o added tangent linear setup in verification/carbon/code_ftl
2049    o added adjoint setup in verification/front_relax/code_ad
2050    
2051    checkpoint46e_post
2052    o Added new equation of state -> MDJWF
2053      - EOS of McDougall et al., 2002, JAOT, submitted
2054      - caveat: the equation of state is only valid for a smaller (more
2055        realistic?) range of values than JMD95P/Z and UNESCO
2056      - added masks to the calculation of pressure in store_pressure
2057      - added more check values for density in check_eos (ini_eos.F), some of
2058        the old check values are out of the range of the MDJWF-eos, so don't
2059        expect perfect matches for those
2060    checkpoint46e_pre
2061    
2062    checkpoint46d_post
2063    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
2064      'OCEANICP', also initialised field pressure correctly in ini_eos in the
2065      case of pressure coordinates. eosType='JMD95Z' in
2066      combination with buoyancyRelation='OCEANICP' now causes an error.
2067    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
2068      in find_alpha/beta.
2069    checkpoint46d_pre
2070    
2071    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
2072      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
2073    
2074    checkpoint46c_post
2075    o Changes necessary for ocean in p-coordinates
2076     -  Added new buoyancy relation = 'OCEANICP'
2077     -  Added new parameters = gravitySign (this used to be contained inside
2078        the factor dRdZ which I added when we first switched to R coordinates).
2079     X GM/Redi is not compatible (yet)
2080     X bottom drag and no-slip need to be debugged.
2081    checkpoint46c_pre
2082    
2083    checkpoint46b_post
2084    o Added new equation of state -> JMD95Z and JMD95P
2085      - EOS of Jackett and McDougall, 1995, JAOT
2086      - moved all EOS parameters into EOS.h
2087      - new routines ini_eos.F, store_pressure.F
2088    o Added UNESCO EOS, but not recommended because it requires
2089      in-situ temperature (see JMD95)
2090    o Modified formatting for knudsen2.f in utils/knudsen2 and added
2091      unesco.f to be used with POLY3
2092    checkpoint46b_pre
2093    
2094    checkpoint46a_post
2095    o Added (atmospheric) pressure loading
2096      - new field in FFIELDS.h, etc...
2097      - new cpp flag ATMOSPHERIC_LOADING
2098    o Changed hFacC to _hFacC in calc_phi_hyd.F
2099    o Added SHORTWAVE_HEATING to some files for consistency
2100    checkpoint46a_pre
2101    
2102    checkpoint46
2103    further merges from release1_p5
2104    o new ctrl package
2105      - adopted from ECCO environment to enable optimization
2106      - added Eliassen Palm fluxes to controls
2107    o added Eliassen Palm flux controls to gradient check package
2108    o cost package
2109      - Compatible with new ctrl package
2110      - added Eliassen Palm cost hooks
2111      - modif's of existing cost functions
2112    o Adjoint-related bug fixes in kpp:
2113      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
2114      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
2115    o autodiff package
2116      - flow directives:
2117        + new for S/R do_the_model_io
2118        + enhanced for S/R checkpoint
2119        + new gmredi.flow
2120      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
2121        disable adcommon.h/g_common.h by default.
2122      - fixed problem for adjoint of global_max
2123    o modified verification/carbon/
2124    o New setup for adjoint of global_ocean
2125    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
2126    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
2127    o incorporated hooks for sponge layer code (external_forcing.F)
2128    
2129    checkpoint45d_post
2130    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
2131    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
2132      (affects plume_on_slope "cg2d" output)
2133    o add new parameter deltaTfreesurf for free-surface time stepping
2134    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
2135    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
2136    o change phiMin in exp1 (to agree with documentation)
2137    o add new flags:
2138     - T,S forcing inside/outside Adams-Bashforth
2139     - turn off temp,salt advection and/or forcing
2140     - for each tracer, define internal flag for multiDimAdvection & A-B
2141    o monitor: change definition of KE to check conservation of Energy
2142    
2143    checkpoint45c_post
2144    o Removed f90 comments ("!")
2145    o Modified initialisations to enable exf package for MITgcm
2146      (without invoking ECCO_PACKAGE).
2147    o modifications to gradient check package (Martin Losch)
2148      - enable centered differences
2149      - modified format of standard output
2150    
2151    checkpoint45b_post
2152    o cleaned exchange calls in cg2d
2153    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
2154    o included CPP option SINGLE_LAYER_MODE in thermodynamics
2155      to configure barotropic setup (Martin Losch)
2156    o moved some initialisations within bi,bj loop in dynamics
2157      (TAF flow dependency)
2158    o in initialise_varia, moved call packages_init_variables
2159      before convective_adjustment_init
2160      (corresponding adjustment of TAF tape initialisation).
2161    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
2162    
2163    checkpoint45a_post
2164    o compute Rho over the whole domain (extend iMin,jMin indices)
2165    o specific exchange for X-slice domain (case Ny=1)
2166    o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
2167    o solve_for_pressure : set cg2d_x to zero where OBCS are applied
2168    
2169    checkpoint44h_post = checkpoint45
2170    o Fix to restore differentiability:
2171      place at which packages_init_variables is called in
2172      initialise_varia is crucial for reverse control flow.
2173    o modifications in GMRedi to enable stable adjoint
2174      (corresponding modif's in thermodynamics, dynamics)
2175    o added missing hook for sponge layer code in external_forcing
2176    o modified test cost functions
2177    o storing in gad_advection (plus removal of write(0,*)!
2178    o missing headers TR1.h added in convective_adjustment routines
2179    o errorMessageUnit set non-equal zero in eeboot
2180      (conflict on some platforms, e.g. IBM SP3)
2181    o modified carbon verif.
2182    
2183    checkpoint44h_pre
2184    o vertical grid option: allow to put the Interface at the middle between
2185      2 cell-centers ; replace delZ in pkg/kpp by drF.
2186    o GM Advective form: Tracers are advected using the residual transport (=
2187      Euler+GM-bolus); set param GM_AdvSeparate=T to return to previous form.
2188    
2189    checkpoint44g_post
2190    o fix surface correction term in multiDimAdvection (affects plume_on_slope
2191      results) ; ifdef missing in thermodynamics.F
2192    
2193    checkpoint44f_pre,checkpoint44f_post
2194    o added PTRACERS package
2195      This allows an arbitrary number of passive tracers to be integrated
2196      forward simultaneously with the dynamicaly model.
2197      + Implemented so far:
2198        - basic forward algorithm (time-stepping, advection, diffusion, convection)
2199        - I/O and checkpointing
2200        - GM/Redi  *but*  using the GM/Redi coefficient of Salt
2201      + Not implemented so far:
2202        - KPP
2203        - OBCS
2204      + No specific example supplied (yet) but global_ocean.90x40x15 has the
2205        necessary data.ptracer file. Simply use -enable=ptracers and uncomment
2206        line in data.pkg.
2207      + This package is disabled by default since it increases storage.
2208    
2209    
2210    o testscript: added -cleanup option
2211    o Shap_filt: a) new shap_filt S/R to use no-slip BC with S2 filter
2212                 b) enable to filter 2D fields.
2213    
2214    checkpoint44e_pre,post
2215    o re-wrote convective adjustment to use pre-calculated weights
2216      Affects: model/src/convective_adjustment.F, convective_adjustment_ini.F
2217      Adds:    model/src/convective_weights.F, convectively_mixtracer.F
2218      Original calls to convect() still in place.
2219    
2220    chkpt44d_pre,post
2221    o added missing EXCLUDE_MONITOR flags
2222    o changed "e" to "_d" in gmredi_slope_limit, gmredi_slope_psi
2223      (incompatible typ in MIN/MAX expressions caused problems
2224      on IBM SP3)
2225    o in genmake added variable MAKEDEPEND
2226      plus resetting for case SunOS
2227    o added timer_stats.c routine for IBM SP3
2228    o removed variables in dynamics
2229    !!! I forgot to create tag chkpt44d_pre !!!
2230    !!! But chkpt44d_pre = chkpt44c_post    !!!
2231    
2232    o real fresh water flux implemented with non-linear free-surface.
2233    
2234    chkpt44c_pre,post
2235    o few fix (mask in shap_s2, EmPmR in external_field_load,
2236      USE_NATURAL_BCS in solve_for_P);
2237    o add arguments myIter & myTime to S/R obcs_calc & solve_for_P
2238    
2239    checkpoint44b_pre/_post
2240    o merge of relevant stuff from the ecco-branch:
2241      - genmake: removed $S64 overwrite for case SunOS
2242      - pkg/exf: update and corrections for field swapping and obcs
2243      - pkg/ecco: parameter lists for the_model_main, the_main_loop
2244                  harmonized between ECCO and MITgcm
2245      - pkg/autodiff: added flow directives for obcs, mdsio_gl_slice
2246                      updated checkpointing_lev... lists for obcs
2247      - model/src: minor changes in forward_step, plot_field
2248                   added directive for divided adjoint in the_main_loop
2249      - pkg/mdsio: added mdsio_gl_slice
2250    
2251    o check parameters & config (chkpt44a_pre,post)
2252    o OBC and NonLin_FrSurf.
2253    
2254  checkpoint44  checkpoint44
 o apply Shapiro filter on T&S before calc_PhiHyd (stagger time stepping)  
2255  o fix bug in mom_vi_del2uv  o fix bug in mom_vi_del2uv
2256    o select when filters are applied ; add options to zonal_filter (data.zonfilt)
2257    o gmredi: fix Pb in the adiabatic form ; add options (.e.g. Bolus advection)
2258    o update AIM experiments (NCEP input files)
2259    o improve and extend diagnostics (Monitor, TimeAve with NonLin-FrSurf)
2260  o added some stuff for AD  o added some stuff for AD
2261    
2262  checkpoint43  checkpoint43

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