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revision 1.123 by jmc, Fri Jan 24 17:55:25 2003 UTC revision 1.625 by heimbach, Wed Mar 8 06:43:37 2006 UTC
# Line 1  Line 1 
1  $Header$  $Header$
2    $Name$
3    
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    o adjoint:
8      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
9      - TBD: "hidden" mom_vecinv recomp. in dynamics
10    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
11     (allow to differentiate between forcing components using new integer flags:
12      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
13     and add new flag to put Dissipation tendency out of Adams-Bashforth.
14    o ecco
15      - enable trend removal from SSH anomaly obs.
16    o adjoint
17      - a fix for PmEpR when #undef EXACT_CONSERV
18      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
19      - try to fix "hidden" recomp. in forward_step for NLFS
20        (NLFS seems broken sometimes after I checked it in)
21    o seaice:
22     - add c-grid version of the dynamic solver:
23       + three new routines that are the c-grid substitute lsr, dynsolver
24         and ostres
25       + put a few fields that were local to dynsolver into global common
26         blocks, so that I can move the computation of stresses etc into
27         seaice_lsr (saves coding but may break the adjoint).
28     - replace more hardwired parameters by runtime parameters
29     - add ice masks that mask the rhs of the implicit solvers where there
30       is no ice (commented out in seaice_dynsolver, because i am not sure
31       if this works properly), eventually this should replace the clipping
32       of ice velocities in seaice_dynsolver to +/-40cm/s.
33    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
34      include it only where its needed
35    o move balancing of fluxes before the call of external_forcing_surf
36    o seaice:
37      - correct units of turning angles (now they are really in degrees)
38      - move computation of GWATX/Y out of main routine into dynsolver
39      - initialize GWATX/Y in seaice_init
40    o Apply mask on Fresh-Water flux (needed for SSH forcing).
41      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
42    o seaice: add runtime flags for turning angles (default to zero)
43    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
44      and trend from exf forcing and ctrl control adjustments
45    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
46      (since checkpoint57x_post)
47    o change the default rotation period to 86164.s = the Earth rotation
48    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
49      and based on a reference stratification. Tested within hs94.cs-32x32x5.
50    o seaice advection: add code for choosing between the default (2nd order
51      central differences) and multiDim advection schemes provided by
52      pkg/generic_advdiff
53    o seaice:
54      - removed all references to SEAICE_GRID.h fields from
55        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
56        (cubed-sphere configuration will change a little)
57      - grid computations in seaice_init are obsolete now.
58      - cleaned up code a little so that is easier to read (hopefully).
59      - added new (better?) discretizations of default advection and diffusion
60        (turn on with SEAICEuseFluxForm)
61      - replace 1 in 3d global fields by kSurface in growth.F
62      
63    checkpoint58a_post
64    o seaice:
65      - bug fix in advect.F
66    o shelfice:
67      - separate shelfice load anomaly from pload (breaks with time
68        dependent forcing), => introduce constant field shelficeLoadAnomaly.
69        Its default is 0., but it may be computed more cleverly from (unknown)
70        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
71        done offline. A good approximation of the pressure load anomaly is
72        necessary to avoid large initial adjustment processes underneath
73        deep-reaching shelfice.
74      - small fix in ISOMIP shelfice_thermodynamics
75      - add more sophisticated thermodynamics of Hellmer (1989), this is
76        now the default
77      - give a few constants more intuitive names
78    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
79      if bulk formulae are used in long integration (especially EmPmR). Turn
80      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
81      if balancePrintMean, the imbalance that is substracted is printed to
82      STDOUT.
83    o fix bug (typo) in obcs_apply_eta.F
84    o add a new package shelfice which enables us to model the circulation
85      underneath shelf-ice with draughts of hundreds of meters.
86     - works
87     - to do: + include improved thermodynamics
88              + check whether kSurfC (from model/inc/SURFACE.h) can be used
89                instead of new field kTopC
90              + can we use topoFile, Ro_surf and existing code in ini_depth.F
91                instead of new field R_shelfIce and new code in ini_depth.F
92                and ini_mask_etc.F?
93              + adjust vertical mixing schemes?
94    o seaice pkg:
95     - add a cpp-flag to include a simple formula for a salinity dependent
96       freezing point of sea water at the surface
97     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
98       meridional stresses are now different (and hopefully correct)
99    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
100       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
101       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
102    o pkg/diagnostics: add options and parameters for regional-statistics
103       diagnostics ; define regions by reading a region-mask from a file
104       (might add other options later)
105    o pkg/bulk_force:
106     - add option and parameters to use AIM surface-flux formulae.
107     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
108       others forcing fields (defined in PARM05, parameter file "data") are loaded
109       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
110     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
111     - use the right EXCH call for uwind,vwind (to work on CS-grid).
112     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
113       and parameters (note: calcWindStress replaces .NOT.readwindstress).
114     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
115    
116    checkpoint58
117    o add "--embed-source" option to genmake2 which, when the supporting
118      tools can be compiled (as determined by genmake2) will turn on the
119      embed_files package which then embeds the entire MITgcm source code
120      (*.[fFhc] + Makefile) used for the build within the executable
121      - requested by CNH but off by default
122      - adds a paltry <9MB to the mitgcmuv executable in most cases
123      - only writes the output when useEMBEDSRC in eedata is true
124    o clean up 3-dim. relaxation codes:
125      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
126      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
127      * Thanks to Tom Haine for testing!
128    
129    checkpoint57z_post
130    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
131      affects output (@ truncation level) of exp. plume_on_slope ; updated.
132    o fix the pickup behavior for obcs in combination with ptracers
133    o fix a bug in ptracers_external_fields_load
134    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
135      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
136    o transfered surface NH pressure to eta field (if exactConserv).
137    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
138         and update lab_sea output.txt file.
139    o completing 3-dim. relaxation code: additional term
140         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
141      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
142      * At compile time, in "EXF_OPTIONS.h" set
143          #define  ALLOW_CLIMTEMP_RELAXATION
144          #define  ALLOW_CLIMSALT_RELAXATION
145      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
146          tauThetaClimRelax3Dim = 15552000.0,
147          tauSaltClimRelax3Dim  = 15552000.0,
148      * 3 cases:
149          1) Use a constant-in-time 3-dim. field
150          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
151          3) Real-time relax. to time-evolving prescribed field
152    o Adding Laplacian-type smoothness constraint on
153      initial and boundary (forcing) controls (ic, bc)
154      * enable at compile-time via
155        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
156      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
157      * Absolute scale somewhat unclear so far
158      * no area weighting was included since no other cost term does so far
159    
160    checkpoint57y_post
161    First step for a NLFS adjoint
162    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
163    o new init. routines for calc_r_star, calc_surf_dr
164    o still need to deal with ini_masks_etc
165    o testreport seemed happy
166    checkpoint57y_pre
167    
168    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
169    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
170    o add new offset feature to offline pkg (plus minor cleanup)
171    o cfc fixes for final year of integration
172    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
173      be in GCHEM_OPTIONS).
174    
175    checkpoint57x_post
176    o fix testreport Pb in multiple test experiment.
177    o cleanup our namelist syntax in verification:
178      - make it more F95 standards compliant (some work still needed)
179      - allows the vast majority of our tests to work with gfortran
180    o Non-Hydrostatic:
181     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
182     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
183    o Allow to apply AB on T,S rather than on AB(gT,gS):
184     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
185     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
186       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
187     - need a "clever" read_pickup to restart from the other AB formulation
188    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
189    o remove some unused variables (reduces number of compiler warnings)
190    o adjoint
191      * Disable useVariableViscosity for adjoint for time being
192        (there are a number of extensive recomputations)
193      * Initialize certain variables needed for adjoint
194    
195    checkpoint57w_post
196    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
197                 fix the singleCpuIO RS version of MDSWRITEFIELD
198       and add a WARNING if using globalFiles=T with multi-processors.
199    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
200      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
201    o tracer advection scheme:
202      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
203       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
204       was not very convenient).
205      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
206       (further tests needed for the implicit DST & Flux-Limiter schemes).
207    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
208      and sRef for convenience, handy, when you want to initialize
209      ptracers in a large domain with a constant non-zero value. Also,
210      untangle ptracers_init.F a little.
211    
212    checkpoint57v_post
213    o change dome exp. to use variable viscosity in side-drag terms.
214    o remove all the files from the cfc_offline test since they are now
215      incorporated into tutorial_cfc_offline which has been producing
216      identical results for a few days of testing
217    o add new parameter: sideDragFactor to enable half-slip-side BC
218      and change side-drag S/R to use viscosity from mom_calc_visc
219      (can switch back by setting sideDragFactor=0.); affects results at
220      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
221       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
222    o vorticity & strain are now computed without masking, to account for
223      no-slip-side BC in variable viscosity calculation ; mask is applied
224      anyway later on, before computing advection/coriolis terms.
225    o modify exp4 to test new obcs support for reading from external files
226      and for passive tracers
227    o fix behavior of ptracers_monitor when monitor output is written to a
228      netcdf-file; still not independent of monitor.F (writes in the same
229      file).
230    o change default value of tRef (put a uniform, meaningful value for ocean
231      & atmos) and initialize sRef (was missing, as Martin mentioned).
232    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
233      to be proportional to enstrophy dissipation length.  Thus,
234       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
235      This is now consistent with Smagorinsky and with the manual.
236    
237    checkpoint57u_post
238    o OBCS and PTRACERS: add open boundary support for passive tracers
239      - either use homogenous (pseudo) v.Neumann conditions or prescribe
240        OB-values from file; this is not different from the way theta and salinity
241        are treated
242      - however, Orlanski-radiation conditions are not supported, and the model
243        will stop if you use pTracers and Orlanski at the same time.
244      - beefed up the rountine obcs_external_fields_load: now only those open
245        boundary values are overwritten with values from files for which there
246        are really files, otherwise the OB-fields remain untouched. This makes
247        it possible to use different OBs at different ends of the domain (as
248        with EXF)
249    o reduce number of exch calls in shap_filt (s2).
250    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
251      truncation level) 4/5 MLAdjust test results (11&12 digits match).
252    
253    checkpoint57t_post
254    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
255    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
256      same truncation, independent of the face number: affects affects several
257      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
258    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
259      note that biharmonic viscosity + no-slip was not tested in any experiment.
260    o fix bug in non-linear free-surf side-drag ; generate new output for
261      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
262    o make mnc honor the writeBinaryPrec flag for most kinds of output
263    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
264    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
265      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
266    o add brackets in multi-terms sum to get same truncation, independent of
267      the face number (manage to get exactly same value of gU,gV at the cs-edge)
268      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
269    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
270      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
271      a maximum grid-scale Reynolds number.  Also, changes all length calculations
272      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
273      Suggested values of viscosity parameters found in mom_calc_visc.
274      Many new viscosity diagnostics available.
275    
276    checkpoint57s_post
277    o Add clearing-house for viscosity calculations, mom_calc_visc and
278      correct numerous bugs in LeithD and Smagorinsky discretizations.  
279      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
280      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
281      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
282      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
283      The Strain-Tension form is now called with useStrainTensonVisc=.true.
284      ViscAhStrain and viscAhTension are now retired.
285    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
286    o In response to JMC's bug report, genmake2 now ignores any soft-links
287      that it finds in the *current* directory when searching for files.
288      Soft-links found in any other source directories will still work as
289      they did before.
290    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
291      a C routine to unlimit the stack size
292    o mnc-ify pkg/aim snapshot vars
293    o mnc-ify pkg/land as requested by Daniel
294    o various changes to mnc including:
295      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
296      - output can now be grouped so that all files within a group
297          change the ITER portion of their names in lock-step together
298      - can now read ("global") PER-FACE (in addition to PER-TILE) files
299          and works with both EXCH1 and EXCH2 (but needs more testing)
300      - writing works for all verification test cases w/ g77 on Linux
301    
302    checkpoint57r_post
303    o make MNC variable initialization happen earlier
304    o add diagnostics for (almost) each term of the momentum Eq.
305    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
306    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
307    o remove MINIMAL_TAVE_OUTPUT option ;
308      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
309    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
310      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
311    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
312    o add time-dependent SST, SSS control
313    o cost terms in ecco/ modularized (new cost_generic.F)
314    o cost_averages routines are modularized (new cost_averagesgeneric.F)
315    o new infrastructure for seaice model vs. obs misfits in seaice/
316      * driver from the_main_loop.F is seaice_cost_driver.F
317      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
318      * gradient check in Exp. 6a of natl_box_adjoint/
319    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
320      (see README file)
321    
322    checkpoint57q_post
323    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
324    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
325      - bug was reported by Jean-Michel and Ian Fenty
326    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
327      update exp. cpl_aim+ocn output.
328    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
329      Needed for high-res. runs with large global files
330      to be able to limit tapelev size
331    o Changed some tests for adjoint:
332      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
333      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
334      * global_ocean.90x40x15/ back to default 3-level checkpointing
335    o Modifications to enable scripted COMMON to MODULE conversion
336      * verification/OpenAD/code/ has necessary scripts and description;
337      * converts, compiles and runs successfully;
338    
339    checkpoint57p_post
340    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
341    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
342      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
343    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
344    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
345      (was already the case for dissipation with mom_vecinv,
346       and also the case for grad.PhiHyd when staggered-timeStep)
347      This will allow to put dissipation out-off the AB time-stepping.
348     Unfortunately, affects truncation error. Update output of exp. that "fails"
349      (cg2d matching number) and leave the others for later: front_relax(10),
350      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
351      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
352    
353    checkpoint57o_post
354    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
355      (2) its ready to be documented during the 20050801 DocFest
356    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
357      for ideal_2D_oce and lab_sea on linux_ia32_g77
358    o set to #undef CTRL_SET_OLD_MAXCVARS_30
359      in global1x1_tot/code_seaice_adj to access indices 32, 33
360      (worth another tag)
361    
362    checkpoint57n_post
363    o adding precip control xx_precip 32
364    o adding swflux control xx_swflux 33
365    o Replacing 10 forcing penalty cost routines by 1 generic.
366    o Implementing partitioning in time-mean and variable adjustment
367      for atmos. state.
368    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
369    o in natl_box_adjoint:
370      * updated exp 1 to 10
371        (but does not have time-mean vs. variable split results yet)
372    o updated global1x1/*_seaice_adj/
373      to incorporate latest changes
374    o enable useSingleCpuIO for mdsio vector routines
375      (applies in particular to tapelev I/O)
376    o removed inefficient K-loop in all active_file*control*.F
377    
378    checkpoint57m_post
379    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
380      and advect_cs (use EXCH-2 and standard cs-32 grid files).
381    o pkg/exch2: filling of face-corner halo regions is optional
382      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
383    
384    checkpoint57l_post
385     tag before updating tutorials (pre-release-2)
386    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
387       for output and interpolation of input fields onto model grid)
388    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
389       Affects results of exp. rotating_tank ; update output.txt.
390    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
391          and taking the square quantity and/or using a fraction-weight field.
392    o fix aim_diagnostics_init.F mate numbers.
393    o add mnc output capability to diagnostics/diagstat and update
394      our cvsignore files for the ACSII output generated
395    
396    checkpoint57k_post
397    o lab_sea now uses diagnostics package and provides a suite of
398      new EXF diagnostics output.
399    
400    checkpoint57j_post
401    o exf
402      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
403        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
404        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
405      * extended diagnostics output
406        - now includes all EXF variables
407        - hs, hl moved to common block
408        - separate S/R for diagnostics, called after ctrl vector is added
409        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
410        - EXFqnet contains true Qnet (i.e. includes qsw)
411      * updated verif. lab_sea, global_with_exf
412      * Rearranging hflux (exf_mapfields -> exf_getforcing)
413        to ensure that diagnostics sees a true EXFqnet
414    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
415    o diagnostics pkg: change pointers so that 1 diagnostic can be used
416      several times with different frequencies.
417    o mnc-ify the thsice package as requested by Daniel Enderton
418      - the monitor--MNC output needs work
419      - many attributes need to be added (most are currently blank)
420    o mnc-ify theaim_v23 package as requested by Daniel Enderton
421      - many attributes need to be added (most are currently blank)
422    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
423    o add Sadourny like discretization to the 4th.O vorticity advection scheme
424    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
425      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
426         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
427    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
428     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
429    
430    checkpoint57i_post
431    o Diagnostics package was changed: diagnostic allocation is now deactivated
432      by setting an empty file name in the namelist (used to be by setting 0 frequency)
433    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
434      add 1rst Order upwind vertical Shear.
435    o add a quick fix for A/B checkpointing in OFFLINE mode
436    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
437      end-run around the C/Fortran linking horror in eesup/src/timers.F
438    o added pkg/runclock: allows user to terminate run based on wall clock
439    o added non-hydrostatic scaling parameter: nh_am2
440    o pkg/my82: futile attempt to make results compiler-independent by adding
441      some "_d 0", etc. no effect.
442    o for mnc output, fill the 'T' coordinate var with myTime and create a
443      separate 'iter' variable for iteration count
444    o pkg/diagnostics:
445      add new capability: output of Global/Regional & per-level statistics ;
446      tested against monitor output (including land & thSIce) on various exp.
447    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
448    
449    checkpoint57h_done
450      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
451      data.diagnostics, data.gchem, data.ptracers) is done.
452    
453    o pkg/diagnostics: prepare for Global/Regional statistics.
454      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
455    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
456      and rename it: DIFFERENT_MULTIPLE
457    
458    checkpoint57h_post
459    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
460    o pkg/diagnostics: change output frequency, now in seconds (instead
461      of Nb of iterations). This requires to change data.diagnostics.
462    checkpoint57h_pre
463    
464    o in mnc, let the user create the output dir if both mnc_outdir_date
465      and mnc_outdir_num are false
466    o add fflags() to pkg/diagnostics which allows one to specify, on a
467      per-file basis, the file precision [default behavior is unchanged]
468    o added diagnostics to pkg/kpp, including computation of mixed layer
469      depth based on a temperature/density criterion
470    o updated verification/natl_box to test the new pkg/kpp diagnostics
471    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
472    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
473    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
474      not mnc -- this mistake was found by JMC and is now corrected
475    
476    checkpoint57g_post
477    o add Adams-Bashforth 3rd Order time stepping:
478      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
479      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
480    checkpoint57g_pre
481    
482    o make lambda[Theta,Salt]ClimRelax spatially varying
483      (default remains spatially uniform constant based on tau)
484    o added new control variables
485      * init. uVel, vVel, etanN
486      * lambda[Theta,Salt]ClimRelax
487    o separate masks used for ctrl_pack/unpack 'from write_grid' output
488      (suggested by G. Forget)
489    
490    checkpoint57f_post
491    o add parameter "baseTime" = model base time = time at iteration zero
492      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
493      account for baseTime shift
494    o move Coriolis arrays from PARAMS.h to GRID.h
495    checkpoint57f_pre
496    
497    o mnc-ifying the seaice package
498    o introduced an alternative length scale calculation for use in the limiting
499      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
500    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
501    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
502      as well as grad(vort3).  Made it compatible with both approximate form
503      for the cubed sphere and full form of these gradients.  Added flag
504      useFullLeith to select between approximate and full form.  
505    o add "d0" in getcon.F to reduce differences between compilers/platforms
506      update output.txt of exp. fizhi-gridalt-hs
507    o change port_rand funtion to allow to set the seed.
508    o fix obscure MNC bug involving conversion between reals and integers
509      - it caused no problems with certain (eg. gcc, ifc) compilers but the
510        new version is now more standards-compliant
511    o adjoint-related modifications
512      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
513      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
514      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
515    
516    checkpoint57e_post
517    o Adding eddy stress controls a la Ferreira et al.
518    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
519    
520    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
521      update output.txt of exp. fizhi-gridalt-hs
522    o add more "Z" dimensions and associated coordinate vars to MNC
523    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
524    o parameter calendarDumps: when set, approximate months (30-31 days) and years
525      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
526      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
527      months and years.  Requires pkg/cal.
528    o diagnostics: add pickup functionality
529      - off by default for backwards compatibility
530      - current version only uses MDSIO -- MNC will be added
531    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
532    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
533    
534    checkpoint57d_post
535    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
536    o modify verification/ideal_2D_oce so that it tests the creation of mnc
537      output from the diagnostics package
538    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
539    o make genmake2 more portable by using ".$FS" instead of ".f" for more
540      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
541    o add coordinate variables to the MNC output from the diagnostics package
542    o change MNC-flags default value: true when useMNC=TRUE
543    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
544      the ability (off by default) to read the grid information using MNC
545    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
546    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
547    o do snap-shot diagnostics at the middle of the time-interval (instead of
548      at the end).
549    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
550      new test for AIM with thSIce + slab-ocean
551    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
552    o move state variable diagnostics to the beginning of the time step ;
553      (note: still needs some work specially for snap-shot diagnostics)
554      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
555    
556    checkpoint57c_post
557    o Change testing option (-ieee) to get closer agreement between g77 & ifort
558    o generate new output.txt files on faulks with g77 & the new -ieee option
559    checkpoint57c_pre
560    
561    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
562      update output.txt of exp. global_ocean.90x40x15
563    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
564      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
565    o add saltFlux(+File) forcing capability with periodicExternalForcing
566    o allow to use pkg diagnostics for GM-Redi & ThSIce output
567    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
568    o improvements for the MNC output from DIAGNOSTICS:
569      - correct handling of the unlimitied dimension
570      - all dims now have associated coordinate variables
571      - variables located at U, V, and Corner ("Z") points are now written
572        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
573        *all* data points are output
574    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
575    o added pkg/seaice/seaice_monitor.F
576    o mdsio_readfield.F can now read files visible only to master MPI process.
577    o pkg/seaice: some test code for ice-modified ocean stress
578    o exf_getffields interpolation defaults to bilinear for all scalar forcing
579      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
580      spurious negative numbers for precipitation and humidity.  Will cause
581      some small numerical differences for integrations using pkg/exf/exf_interp.F.
582    o pkg/ctrl/
583      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
584        May be enabled via doPackDiag
585      *  introduce z-scaling of
586         + gradient (doZscalePack) and
587         + control (doZscaleUnpack)
588    o pkg/mdsio/
589      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
590      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
591    
592    checkpoint57b_post
593    o simplify options in diagnostics_fill arguments (remove weird combinations)
594    o fix MNC coordinate variables so that they now contain per-face index
595      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
596      general, EXCH2 grids are only aligned to a "local" coordinate system
597    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
598    o Implement instantaneous output within pkg diagnostics:
599      setting a negative frequency in data.diagnostics produces
600     "snap-shot" output (as opposed to time-average if freq > 0)
601    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
602      NOTE: change ptracer diagnostics name: use 2 characters to work with
603            more than 9 tracers. Add also diagnostics of advect & diffus flux.
604    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
605      becomes the coordinate variable for the 'T' dimension
606    o add CF-style coordinate variables to MNC
607      - just a first cut:  numbers are meaningless on the cubesphere and
608        missing along the T axis but otherwise it works!
609    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
610    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
611    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
612      this is based directly on what the model compute, so that the content of
613      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
614    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
615    o clean up build options files for SunOS, in particular
616      - remove -traditional from xmakedepend
617      - change -xarch=v9 to -xarch=native for f77
618      - restore use of make (not gmake)
619      - add CC=gcc if using g77
620    o changes per discussion of AM, JMC, & EH3 today:
621      - move redundant "grid" variables out of "state" -- in preparation of
622        creating proper CF-style coordinate variables and in recognition
623        that any/all grid variables can be easily copied (eg. w/NCO) from
624        the grid files into any of the other NetCDF files
625      - *always* output grid variables with MDSIO (this will eventually be
626        changed)
627      - output MNC grid file if useMNC is true
628    o every instance of _END_MASTER() has been found and replaced with
629      _END_MASTER( myThid ) in order to satisfy certain picky Sun
630      preprocessors
631    o re-arrange diagnostics pkg initialisation:
632     - allow each package to extend the available diagnostics list
633     - add some checking and fix small problems (multi-threaded, ...)
634     - new S/R diagnostics_fill (replace fill_diagnostics):
635       look through the short list of active diag. (instead of the long list)
636       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
637    
638    checkpoint57a_post
639    o this set of changes restores TAMC compatibility
640      tested for global_ocean.90x40x15 adjoint on trough
641      (what a pain)
642    
643    checkpoint57a_pre
644    o some modifs in tools/build_options for sunos
645    o call ctrl_pack for ctrl at end for optimcycle=0
646    
647    checkpoint57
648    o add horizontal bi-harmonic viscosity for vertical velocity
649      - new parameter viscA4W (defaults to viscA4)
650      - affects only non-hydrostatic code
651      - to be done: no-slip lateral boundary conditions
652    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
653    o implement Implicit Vertical advection for pTracers
654    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
655      (implemented also for implicit vertical diffusion & advection)
656    o OBCS: extend application of tracer open boundary conditions
657      to a strip beyond the boundary of width Olx/Oly
658    o add call monitor to TAF set of required calls (flow directives)
659      and include in natl_box_adjoint
660    o untangle a few ifdefs related to cost, ctrl, autodiff
661      untangel a few ALLOW_ECCO_OPTIMIZATION
662    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
663      (theta2, salt2 in ecco_cost_weights)
664    
665    checkpoint56c_post
666    o OBCS as control variables
667      - update ctrl_ad_diff.list, obcs_ad_diff.list
668      - remove balance of obcs controls from default
669      - fix index bug nobcs in ctrl_init
670      - fix dummy fields filen in ctrl_pack
671      - add dummy weights for obcs
672    o lsopt: comment out fort.94 output
673    o optim:
674      - remove unnecessary header files
675      - adjusted namelists
676      - add xerbla.F to Makefile
677    o exf:
678      - multiple modifications of exf_check_range
679      - unit change in exf_init_runoff from [m/year] to [m/s]
680    o mdsio:
681      - i/o-vector change debugLevel from debLevA to debLevB
682    
683    checkpoint56b_post
684    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
685      is called from DO_THE_MODEL_IO
686      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
687      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
688      - clean up PTRACERS_WRITE_TIMEAVE a little
689    o add another verification experiment that tests both the cfc-pkg and
690      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
691      reactive tendencies treated inline with regular timestepping
692    o testreport previously did a lousy job of comparing small numbers, so
693      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
694      implemented in the little c-progam tmp_cmpnum.c which is embedded in
695      testreport.
696    o ptracers_monitor: bug fix for MPI
697    
698    checkpoint56a_post
699    o GCHEM: finish reorganizating the package
700      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
701        (introduces another 3D-array for each passive tracer, but only if
702        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
703        gchemTendency is not needed because the timestep is done separately)
704      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
705      - GCHEM is now---more or less cleanly---separate from PTRACERS
706      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
707        so clear to me how that should be done in a general way.
708    o CFC: improve formatting of output in CFC_ATMOS
709    o PTRACERS:
710      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
711        that ALL experiments with ptracers enable can be checked. This makes
712        GCHEM_MONITOR obsolete.
713      - include a runtime parameter PTRACERS_monitorFreq that defaults to
714        monitorFreq
715      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
716    o add PTRACERS (PTR0[1-5]) to testreport output
717    o exf_check_range:
718      * default changed to .TRUE.
719      * will check values for niter0 if debLevA, every timestep if debLevB
720      * STOP in exf_check_range if 'out of range'
721      * range chosen generous to allow for potential extema
722      TBD: a version with stricter range
723           permitted range would be runtime parameters
724    o GMredi:
725      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
726      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
727      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
728    o GCHEM:
729      - move call to GCHEM_FORCING_SEP, so that it is now called before
730        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
731      - introduced a useGCHEM runtime flag and applied it everywhere.
732      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
733        this flag is now only visible within GCHEM-pkg routines.
734      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
735        be replaced by a 3D array that is computed before thermodynamics; for
736        this, the tracer ID iTracer had to be included into the parameter list
737        of ptracers_forcing
738      - set up forward_step to call gchem_forcing, that will replace
739        gchem_forcing_int in ptracers_forcing
740      - cleaning up
741    o small cleaning of exch2: remove files that are also in eesupp/src
742    
743    checkpoint56
744    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
745    o mnc: cleanup "full" files--fixes out-of-memory problem
746    o ECCO-GODAE
747      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
748      * fully merged and updated from SIO code
749        windstress sign change affects
750        - exf_inscal_[u/v]stress
751        - sign of xx_tau[u/v] adjustments
752        - signs in cost_scat
753      * ctrl_get_gen: avoid update of tau[u/v] for first few days
754      * natl_box_adjoint updated and compressed
755      * 2-level checkpoint switch added
756        (tested in EXP. 1 of natl_box_adjoint)
757      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
758    o SVD
759      * first complete, non-hacked version for SVD calculations
760      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
761        performed via direct access files admtlm_vector.it????
762        (via ctrl_[un]pack)
763      * optimcycle is used for ARPACK iteration counter
764        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
765      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
766        and add linear transforms where necessary
767      * controls are initial/final SST, SSS (can be extended; need to check
768        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
769    o mdsio: filename info to both stderr, stdout
770    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
771      from sign change
772    
773    checkpoint55j_post
774    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
775      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
776    o add consistent build directories and .cvsignore files to verification
777    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
778    o make all subroutines 30 or less characters in length for certain older
779      compilers to work (a thorough search only turns up two routines in
780      pkg/ptracers)
781    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
782      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
783    
784    checkpoint55i_post
785    o change arrays for total vertical diffusivity (2.D if explicit,
786      3.D if implicit) ; each ptracer uses its own background value.
787    o added mnc/NetCDF output capability to ocn_compon_interf
788      - added bits to verification/cpl_aim+ocn so that it can run on
789        ITRDA and other clusters without the mpirun "-wd" option
790    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
791      configuration
792    o give MNC the ability to create additional files rather than
793      exceeding a specified file size limit "MNC_MAX_FILESIZE"
794      - the default is just less than 2GB which is a practical limit
795        on many systems
796    o Compute the non-local term using either KPP vertical diffusivity (=default)
797       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
798    
799    checkpoint55h_post
800    o add verification test "vermix"
801    o remove all the *_ioinc flags and replace with the single global
802      outputTypesInclusive flag
803    o allow to set a vertical profile of vertical diffusivity for T & S
804    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
805    o useMNC moved from data.mnc to data.pkg
806    
807    checkpoint55g_post
808    o Renaming carbon AD experiments to comply with testreport conventions
809    o Updating adjoint of Held-Suarez hs94.1x64x5
810    o Fixing directives for non-ECCO forward_step, after ECCO directives
811      have been fixed to avoid recomp. of do_oceanic_phys
812      Works well for global_ocean.90x40x15,
813      but recomp. issue remains for carbon
814    o Updating adjoint output for natl_box_adjoint after
815      pkg/ecco has been modified (see taga c55d_post)
816    
817    checkpoint55f_post
818    o rename to timeave_init_fixed
819    
820    checkpoint55e_post
821    o some delicate re-shuffle of store directives to avoid one
822      extra call of do_oceanic_physics
823      affects ecco_the_main_loop.F, do_oceanic_physics.F
824      checkpoint_lev1_directives.h
825    o NB: this may break global_ocean adjoint temporarily,
826      but it is clear how to fix it. Will do later, need this now.
827    
828    checkpoint55d_post
829    o ECCO specific cost function terms (up-to-date with 1x1 runs)
830    o ecco_cost_weights is modified to 1x1 runs
831    o modifs to allow observations to be read in as
832      single file or yearly files
833    o enable to read exf forcing fields as either
834      single file or yearly files (flag useExfYearlyFields)
835    checkpoint55d_pre
836    
837    o switch between 2-level and 3-level checkpointing
838    o add ability of MNC to write local and "partial" (eg. 2D slices where
839      the full 3D field is never actually stored) arrays to NetCDF files
840      with the correct (that is, the complete multi-dimensional) set of
841      array indicies
842      - used in mom_vecinv() to write the diagFreq output
843      - tested (demonstrated) in verification/aim.5l_cs
844    o further mnc-ification
845      - add verification/lab_sea to the list with mnc setups
846      - fix undefined mnc v-names in cd_code
847      - add kpp to mnc output (both snapshot and timeave)
848    o non-hydrostatic code
849      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
850        in calc_gw.F
851      - defaults to viscAh
852      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
853        friction or Leith) in non-hydrostatic mode, as long as there is
854        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
855    o pkg/cost
856      extend simple cost functions to treat time mean quantities
857      (T,U,V) via cost_accumulate_state from cost_tile
858    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
859        be 2 times larger than the minimum size the advection scheme requires.
860        now get a perfect conservation of salt in advect_cs test-exp (updated)
861    o GGL90 (Gaspar's TKE mixed layer)
862      - add horizontal diffusion of TKE, requires exchanges in
863        do_fields_blocking_exchanges, horizontal diffusivity is zero by
864        default. In OPA there is no horizontal diffusion of TKE but the
865        mixing coefficients are computed from a horizontal average of TKE of
866        6 points or so. I think that diffusion has a little more physical
867        justification.
868      - clean up ggl90_calc in the hope of reducing memory usage (this hope
869        was in vain)
870      - mask tke-variable in ggl90_init
871    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
872    o fix biharmonic diffusion on CS-grid.
873    o more obcs stuff
874      - added obcs_external_fields_load as an alternative to the EXF-pkg option
875        for reading boundary values. This routine is called from
876        obcs_prescribe_read
877      - updated obcs_check
878      - changed sponge layer relaxation parameter units for days to seconds
879      - turned off sponge layer by default
880      - changed argument list of OBCS_CALC to myTime+deltaTclock
881      - fixed about 35 bugs in obcs_external_fields_load
882    
883    checkpoint55c_post
884    o obcs stuff
885      - new runtime flags useOBCSprescribe, useOBCSbalance
886      - re-arranged obcs_calc
887      - moved exf_getobcs to obcs_prescibe_read
888        obcs_prescibe_read is called after ORLANSKI stuff
889        and independent of it (executable can contain all).
890      - updated obcs_check
891      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
892        These may be necessary only if tangential velocities are
893        prescribed at OB, not sure, needs testing.
894    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
895      which simplifies the calls and passes the ifc check-bounds test
896    
897    checkpoint55b_post
898    o add a 2D scalar, Z location, exchange_2 routine.
899    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
900      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
901      affects advect_cs results (for the wrong reason): update output.txt
902    o use a more standard discretization for biharmonic viscosity ;
903     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
904      affects results of dome set-up: update output.txt
905    o fix gad_advection.F (CubedSphere part), back to version 1.23
906    o fix bug in mom_vi_del2uv.F (CubedSphere part).
907    
908    checkpoint55a_post
909    o merged code to
910      * prescribe/read time-dependent open boundaries
911        (works in conjunction with exf, cal)
912      * sponge layer code for open boundaries
913      * each boundary N/S/E/W now has its own CPP option
914        (healthy for the adjoint)
915    
916    checkpoint55
917    o up-to-date adjoint of previous breaks
918      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
919      - global_ocean_ebm: adjoint still needs fix (TLM ok)
920      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
921      - carbon: * remove tr1-related adjoint verification
922                * add ptracer as control variable
923    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
924      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
925    
926    checkpoint54f_post
927    o in verification/carbin/ remove experiment related to
928      ALLOW_PASSIVE_TRACER (array tr1 etc)
929      code_ad/ input_ad/ results_ad
930    
931    o add two new packages
932      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
933        + subject to optimization (memory)
934      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
935        + subject to reordering (many GOTOs in the original code)
936        + so far opps is called for every (i,j) point, and then operates in
937          the vertical; one may want to reorder the scheme in order operate in
938          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
939          fields)
940    o overhaul of IO so that we now have flags for MDSIO and/or MNC
941      - all verification tests compile and run with linux_ia32_g77
942      - defaults are compatible with current input files--nothing
943        should change if you were not previously using MNC
944      - MNC output has been added in numerous places (eg. timeave)
945        but there are still a few writes not yet do-able with MNC
946        (this is in progress)
947      - flags now allow for either/or/both use of MDSIO and MNC and
948        documentation will soon follow
949      - numerous small formatting cleanups for ProTeX
950    o add version info (via BUILD_INFO.h) to MNC and stdout
951    
952    checkpoint54e_post
953    o add two new packages
954      - pp81 (Packanowski and Philander, 1981), Richardson number and
955        stratification dependent mixing
956      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
957      - these scheme operate in a similar manner as KPP (without ghat, of
958        course), however there is only one diffusivity that is used for both
959        temperature and salinity (and passive tracers)ç
960    o add offline package
961    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
962      provided by Stephanie Dutkiewicz
963    o genmake2: add ability to search for C compilers and cleanup test output
964      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
965    
966    checkpoint54d_post
967    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
968    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
969      leading to additional shift by 5 days each year of integration
970       (i.e. leading to considerable offset over the years)
971    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
972    o start with no AB and no initial filtering (staggerTimeStep):
973      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
974    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
975      (external loading & cpl import/export stay in forward_step.F)
976    o update coupling interface to work with new staggerTimeStep
977    o change MDSIO ptracers_pickup.
978    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
979    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
980    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
981    
982    checkpoint54c_post
983    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
984      this affects (truncation error) output.txt of test-exp:
985       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
986    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
987    o change Qnet to always be the net heat flux, (+upward).
988      affects (truncation error) output of natl_box exp.: updated
989    o define the max number of passive tracers in PTRACERS_SIZE.h
990    o start to test mnc routinely in exp0
991    o add sea-ice loading (sIceLoad) as a new forcing field.
992    
993    checkpoint54b_post
994    o add testreport "-j JOBS" option for parallel builds (tested and pretty
995       impressive on Altix and Opteron systems)
996    o diagnostics can now write NetCDF files through the mnc package
997    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
998    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
999    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
1000      affects (truncation error) output of lab_sea & natl_box exp.: updated
1001    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
1002    
1003    checkpoint54a_post
1004    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
1005    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
1006    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
1007    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
1008      + internal_wave (shift in writing cg2d_ini_res)
1009    checkpoint54a_pre
1010    
1011    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
1012      - modified verification/lab_sea and natl_box_adjoint accordingly
1013    
1014    checkpoint54
1015    checkpoint53g_post
1016    o prepare splitting of thermodynamics: store convect.counter in common block
1017    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
1018      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
1019    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
1020    o new parameter "nShapS": allow to treat differently S from T (nShapT)
1021    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
1022    o restore adjointability
1023    
1024    checkpoint53f_post
1025    o modifications that affect AIM experiment results (update output.txt):
1026      - no advection of S at top interface Nr (pkg/generic_advdiff)
1027      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
1028    o AIM pkg:
1029      - include stability function into surf.Flux derivative relative to Tsurf
1030      - calculate clear-sky radiation & surface temp. change (for diagnostics)
1031    
1032    checkpoint53e_post
1033    o merged cylindrical coord configuration
1034    o added rotating_tank experiment
1035    checkpoint53e_pre
1036    
1037    checkpoint53d_post
1038    o faulks upgraded: re-generate output.txt that have changed:
1039       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
1040    o Added Bryan and Lewis, 1979, vertical diffusivity profile
1041    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
1042    o added Sadourny discretization of Coriolis
1043      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
1044      - re-enabled use of omega3 (useAbsVorticity)
1045    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
1046      vector-invariant equations
1047      - note: does *NOT* yet use same variable visc. for no-slip BC's.
1048    o recoded the lateral boundary conditions for non-hydrostatic w, this time
1049      hopefully without new bugs
1050      - still to do: biharmonic friction for non-hydrostatic w
1051    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
1052    o regenerated output for global_ocean_ebm (using -ieee)
1053    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
1054      of mom_common/
1055      - simple re-arrangement of instructions within computing loop
1056    checkpoint53d_pre
1057    
1058    checkpoint53c_post
1059    o new version of coupler for AIM+thSIce and Ocean models
1060     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
1061     - land: change Evaporation of snow
1062     - aim with thSIce: fix bug in snow-precip.
1063    o changes to calc_gw.F
1064     - bug fix for w^2 term near the bottom boundary
1065     - (hopefully) improve the lateral slip boundary condtions for use with
1066        partial/looped cells
1067      - because the bug fix changes two verification experiments anyway (exp5
1068        and plume on slope), change the lateral boundary condition from half slip
1069        to the value of no_slip_sides
1070    o ebm package wasnt quite up to the parallel task. Fixed that.
1071    o Adjoint of EBM package + verification
1072      * TLM OK
1073      * ADM not sufficient accuracy yet (needs further testing)
1074    
1075    checkpoint53b_post
1076    o Commiting new energy balance model to repository
1077      * package is pkg/ebm
1078      * verif. is verification/global_ocean_ebm
1079      * references are in ebm_driver.F
1080    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1081    C        Global thermohaline circulation. Part I:
1082    C        Sensitivity to atmospheric moisture transport.
1083    C        J. Climate 12(1), 71-82
1084    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1085    C        Global thermohaline circulation. Part II:
1086    C        Sensitivity with interactive transport.
1087    C        J. Climate 12(1), 83-91
1088    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
1089    C        Destabilization of the thermohaline circulation
1090    C        by atmospheric eddy transports.
1091    C        J. Climate 7(12), 1870-1882
1092    o Will need long integration testing.
1093    checkpoint53b_pre
1094    
1095    o created pkg/mom_common in preparation for variable viscosity code
1096    o renamed and split ini_mnc_io
1097    o pkg/land: only liquid water can diffuse or run-off
1098    o AIM using land: soil wetness availability account for snow
1099    o added printMapIncludesZeros to EEPARMS namelist
1100    
1101    checkpoint53a_post
1102    o restore TAMC compatiility for exf_constants.h
1103      (no usage of _d in .h)
1104    o Additional storing in KPP in an attempt to fix
1105      TAMC problem with adjoint of KPP code.
1106      (no success...)
1107      Identical code works fine with TAF.
1108    o Fixed verification/natl_box_adjoint experiments.
1109      Initial conditions for Experiments 4 and 5 are now
1110      set to "SEAICE_initialHEFF=0", which is more reasonable,
1111      and hence gives results closer to that of Experiment 2.
1112      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
1113    
1114    checkpoint53
1115    o stable checkpoint with up to date adjoint
1116      TLM tests only run for 1st grdchk at the moment. Its unclear if
1117      this is a code problem or a problem with resetting code for g_
1118      variables that is being autogenerated wrong.
1119      Otherwise:
1120       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
1121       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
1122         are both still in chaos following their security messes.
1123    
1124    checkpoint52n_post
1125    o various build (mostly genmake2) changes including:
1126      - ability to build/run more easily within Cygwin and MacOS X
1127      - more complicated Makefiles with a stronger dependence on Gnu Make
1128    o pkg/seaice modifications
1129      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
1130        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
1131        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
1132      - changed proxy for geostrophic velocity and updated
1133        verification/lab_sea/results/* accordingly
1134      - removed ADI dynamic solver from pkg/seaice
1135      - replaced all occurrences of 1/CSTICE or 1/CSUICE
1136        they caused a segmentation fault under certain circumstances
1137      - removed unused field WATR
1138    o bug fix in exf-package:
1139      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
1140         now reflect that.
1141    o small fixes in the cal-package:
1142      - set reference date to first of January for the 'model'-calendar
1143      - failing of cal_CheckDate in cal_FullDate now actually results in a
1144        warning
1145    o small modifications in exf-package to increase flexibility:
1146      - change climtempfreeze from a constant to a runtime parameter that
1147        is specified in data.exf_clim (default = -1.9)
1148      - introduce runtime parameter windstressmax (default = 2.0) that is
1149        specified in data.exf
1150    o fix in pkg/thsice:
1151      - update Evap (Tsf changes) to be consistent with Latent heat flux
1152      - maintain snow precipitation unchanged (even if Tsf >=0).
1153     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
1154    
1155    checkpoint52m_post
1156    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
1157      this does not change any of the results, because myIter=0 in swfrac always
1158      lead to jwtype=2 (the default anyway), but the call makes little sense
1159      as a default
1160    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
1161    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
1162      atmospheric model (AIM) to use it ; add a "slab ocean" component.
1163    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
1164    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
1165    o extending useSingleCpuIO option to work with new exch2 I/O format
1166      - old-style, missing-tile I/O is still accessible by defining CPP
1167        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
1168    o monitor package can write to NetCDF files and/or STDOUT
1169    o fix re-definition bug in MNC_GRID_INIT_ALL()
1170    o doc/api_reference added
1171      - a framework for building an API Reference Manual using all
1172        the "protex" comments embedded in the code
1173      - see pkg/generic_advdiff, pkg/mnc for examples
1174    o MNC:
1175      - make myThid the last argument for all subroutines
1176      - new default for the grid files: NO halos
1177      - add useMNC and other run-time flags
1178      - separate per-file-group handling of the unlimited dimension
1179      - early initialization of MNC w/ flags read at the eeboot stage
1180        and lookup tables set in initialize_fixed
1181      - write all MNC output to a freshly-created directory
1182    o thermodynamics sea-ice (thsice) is now tested with testreport.
1183    o test exp. advect_cs: use the standard cs32 grid ; update output.
1184    o Added functionality to grdchk:
1185      pick global i,j,k position (or nearest wet) where to perform check.
1186    
1187    checkpoint52l_post
1188    o new land formulation:
1189      a) use ground enthalpy as prognostic variable to ensure exact
1190         energy conservation.
1191      b) account for water temperature and for latent heat of freezing
1192         in all processes (rain, run-off, ground storage)
1193      c) compute surface and ground temperature implicitly.
1194    o aim_v23 modification for new land model:
1195      a) Treat separately land / ocean / sea-ice surface fluxes
1196         to allow implicit computation of land & sea-ice surface temp.
1197      b) add snow precipitation.
1198    checkpoint52l_pre
1199    
1200    o fix problem (when 1 tile is empty) in min/max monitor.
1201    o fix bug in timeAve (u,vZetatave in common block)
1202    o no restoring terms under ice for pkg/seaice
1203    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
1204    o bug fix for pkg/seaice pickups
1205    o change MNC call locations and add coordinate attributes
1206    o mask vorticity at the corner ; affects global_ocean.cs output
1207    o fix ini_curvilinear_grid ; test CS experiments with mpi
1208    o aim.5l_cs: modify sea-ice fraction input file ; update output
1209    o exf: Adding simple range check routine for exf fields after read
1210    
1211    checkpoint52k_post
1212    o removed top-level directory "diags"
1213      - we migrated these functions to pkg/timeave a long time ago
1214    o fixed bug introduced in pkg/monitor
1215    o accuracy ctrlprec = 32 insuffient for gradient checks using
1216      averaged fields (I/O via cost_averages)
1217      -> use ctrl.h in active_file*.F to control I/O precision.
1218    o paramter list of CALL ADTHE_MAIN_LOOP
1219    o added initial do_the_model_io to ecco
1220    o set all ...Freq to zero after cost_final
1221      taveFreq, dumpFreq, pChkptFreq
1222    o MAIN and ECCO differentiability restored
1223    
1224    checkpoint52j_post
1225    o fix nchklev in tamc.h for global_ocean...
1226    o Bringing flow and store directives up-to-date
1227    o Really weird thing!
1228      call do_the_model_io from the_main_loop with parameters
1229      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
1230      TAF places a faulty re-call of initialise_varia
1231      after cost_final call which should not be there!
1232    checkpoint52j_pre
1233    
1234    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
1235      error messages
1236    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
1237    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
1238      debug output
1239    o modfied mdsio_writefield.F to handle non-global files under exch2
1240    o update AIM Cubed-Sphere exp (aim.5l_cs):
1241      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
1242    o update AIM Equatorial Channel exp:
1243      use standard aim_v23 pkg and change the SST fields to be more realistic.
1244    o globalFile now works with exch2
1245    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
1246      mon_vort3.F to make exch2 friendly with >1 tile per cube face
1247    o limit timeave output for hi-res integrations
1248    
1249    checkpoint52i_post
1250    o removed CPP_EEOPTIONS.h from verification/*/code
1251    o updated the tiling for global_ocean_pressure
1252    checkpoint52i_pre
1253    
1254    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
1255      the old pkg/aim).
1256    
1257    checkpoint52h_pre
1258    o shortened offending lines in exch2_send_rx?.template
1259    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
1260    o genmake2: add build & execute test for NetCDF code
1261    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
1262      old grid files, moved CPP_EEMACROS.h to pkg/exch2
1263    o added useSingleCPUIO flag to monitor.F and mon_out.F
1264    o added temporary hack for sea-ice dynamics on the cube:
1265      metric terms are ignored and it is assumed that
1266      there is no sea-ice on cube faces 1, 2, 4, and 5.
1267    
1268    checkpoint52f_post
1269    o added exch2 cube routines to pkg/exch2
1270    o modified hs94.cs-32x32x5 to use it
1271    o added new grid files to hs94.cs-32x32x5
1272    checkpoint52f_pre
1273    
1274    checkpoint52e_post
1275    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
1276      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
1277    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
1278      to work with implicit vertical advection and AB ;
1279    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
1280    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
1281     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
1282    checkpoint52e_pre
1283    
1284    o fix bug in impldiff when Nr=1 or Nr=2.
1285    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
1286    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
1287    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
1288      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
1289    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
1290    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
1291    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
1292    
1293    checkpoint52d_post
1294    o re-tiled many expts to allow comparison in multi-processor mode
1295      - updated output accordingly
1296      - changed hs94.128x64x5 to use intial T from file rather than use the
1297        random number generator
1298    o add infrastructure in model routines for fizhi and gridalt packages
1299    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
1300    o changes to permit hi-res, cubed-sphere, configuration
1301      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
1302      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
1303      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
1304        of surface winds for the cube
1305      (A verification experiment, based on global_ocean.cs32x15, but with
1306       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
1307       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
1308       complete with example surface forcing files and matlab scripts to look
1309       at the output and compare it with that of global_ocean.cs32x15.)
1310    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
1311       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
1312       to conform to the common rule.
1313    o check-in the first version of the coupler + interfaces for multi-components
1314       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
1315       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
1316       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
1317       - ocean and atmos. share the same horizontal grid (no interpolation).
1318       - exchanges between component and coupler is done in forward_step
1319    o new verification experiment, cpl_aim+ocn:
1320       coupled ocean - AIM atmosphere on cs32 grid.
1321    
1322    checkpoint52d_pre
1323    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
1324    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
1325    
1326    checkpoint52c_post
1327    o Fixing OPTIONS files for use of exf:
1328      - ALLOW_ECCO not needed
1329      - ECCO_CPPOPTIONS.h should not be included from
1330        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
1331        as has been the case in the past
1332      - All cal/exf related options are currently set in
1333        single header file. Should remain so until we
1334        agree on a consistent new policy.
1335    o Removed all CPP options for cal package.
1336      cal has no more CPP options.
1337    o modified STOREs in GAD_ADVECTION
1338    o corrected key comp. for passkey
1339    
1340    checkpoint52b_post
1341    o new version: "thsice" of thermodynamic sea-ice pkg:
1342     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
1343     - modify fluxes but do not change theta directly;
1344     - light cleaning of bulk_force pkg (still needed with thsice).
1345     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
1346       + output_thsice.txt to test thsice & bulk_force pkgs.
1347    o put back grid & coriolis monitor output.
1348    checkpoint52b_pre
1349    
1350    o call "do_the_model_io" at the beginning (=> dump initial state)
1351    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
1352    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
1353      (need info on NUMBER_OF_PTRACERS)
1354    o missing PTRACERS headers in some routines
1355    o default tamc.h in pkg/autodiff supposed to crash
1356      to ensure proper customization
1357    
1358    checkpoint52a_post
1359    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
1360      - moved surfaceTendencyTice from pkg/seaice to main code
1361      - subroutine FREEZE_SURFACE now limits only surface temperature
1362        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
1363        => new output.txt for global_ocean.cs32x15 & global_with_exf
1364      - keep the old version of FREEZE for backward compatibility;
1365        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
1366      - corresponding modifs for TAF directives
1367    o added surface flux output variables to TIMEAVE_STATVARS
1368    o time-averaged output for pkg/ptracers
1369    o fix problem with ECCO-related divided adjoint
1370      snapshot file was missing some ad-variables,
1371      but no warning issued by TAF
1372    
1373    checkpoint52a_pre
1374    o some bug fixes for #undef REAL4_IS_SLOW
1375    
1376    checkpoint52 = ecco_c52_e35
1377    o after testing adjoints of checkpoint51u_post
1378    
1379    checkpoint51u_post
1380    o this is the post-merge tag of the ecco-branch
1381      (needs another clean checkout and re-testing)
1382    o various natl_box_adjoint configs and results
1383      but no input fields
1384    o obcs adjoint not yet merged!
1385    o adding ECCO global 1x1 and 2x2 degree configs
1386    o updated/extended some store directives for seaice
1387    o pkg/ecco now containes ecco-specific part of cost function
1388    o top level routines the_main_loop, forward_step
1389      supersede those in model/src/
1390      previous input data.cost now in data.ecco
1391      (new namelist ecco_cost_nml)
1392    o in ctrl/ cleaned some cross-dependencies and updated CPP options
1393    
1394    checkpoint51t_post
1395    o this is the pre-merge tag of the ecco-branch
1396    
1397    checkpoint51s_post
1398    o cleanup: removed various obsolete #define-s
1399    o pkg/grdchk
1400      - renamed 'ph-grd 3' to 'grad-res'
1401      - merged from ecco-branch
1402        (remaining bug fixes for obcs gradient checks)
1403      - additional high-precision output for testreport
1404        (grep for 'precision_grdchk_result')
1405    
1406    checkpoint51r_post
1407    o cleaned up or removed CPP_OPTIONS.h files
1408    o updated results for some of the tests to reflect the new
1409      optfiles (-ieee: -O0 instead of -O3)
1410    
1411    checkpoint51q_post
1412    o cd_code:
1413      - moved cd_scheme.F -> cd_code_scheme.F
1414      - separate read_checkpoint from cd_code_ini_vars.F
1415      - separated cd_code part from write_checkpoint
1416      - updated AD_SOURCE, generated .flow
1417      - added CD_CODE_VARS.h to the_main_loop
1418      - Moving cd_code specific store dir.s to pkg/cd_code
1419    o ctrl package totally restructured
1420      - pack/unpack now optional and decoupled from
1421        xx_/adxx_ I/O
1422      - ctrl_pack/unpack cleaned
1423        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
1424      - confined inclusion of AD_CONFIG.h to where necessary.
1425    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
1426    
1427    checkpoint51p_post
1428    o create initial cd_code package
1429      - WARNING: the initialization of fields within packages
1430        is broken because INI_FIELDS (where READ_CHECKPOINT is
1431        called) is called *before* PACKAGES_INIT_VARIABLES.
1432        This seems to be backwards since
1433        1) its important to initially zero the entire field including
1434           the "halo" region
1435        2) zeroing needs to be done *before* reading pickup info
1436           and the pickup call might or might not happen in any
1437           particular run
1438      - this needs an overhaul for R2
1439    o cleanup verification/*/code/GMREDI_OPTIONS.h
1440    o cleanup testreport
1441    
1442    checkpoint51o_post
1443    o bringing AD-related verif's up to date with genmake2
1444      - carbon/
1445      - global_ocean.90x40x15/
1446      - hs.94.1x64x5/
1447      - (front_relax/ )
1448    o (more) consistent directory structure for AD-related verif.'s
1449    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
1450    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
1451    o bug fix in find_alpha.F for MDJWF:
1452      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
1453        change rho -> rho-rhoConst
1454      - replace call find_rho to find_rhonum
1455    o initialisation of rFlx extended to full array (required by TAF)
1456      and shifted to thermodynamics
1457    o removed PTRACERS.h in ptracers routine
1458    o added surfacetendencyPtr to S/R parameter list pracers_forcing
1459    o Correcting initialisations for fVerU, fVerV.
1460    o helping TAF to recognize dependency on kUp for
1461      fVerU, fVerV
1462    o Replacing delZ by delR in pkg/ctrl/
1463    checkpoint51o_pre
1464    
1465    o undid all of cp51 pending some cleanups and discussion
1466    o added the [#include "AD_CONFIG.h"] statement to all files that need
1467       it for adjoint/tl #defines
1468     o re-worked the build logic in genmake2 to support AD_CONFIG.h
1469     o removed tools/genmake since it no longer works
1470    
1471    checkpoint51n_post
1472    o modifications to make FREEZE flux visible to pkg/kpp
1473      - moved surfaceTendencyTice from pkg/seaice to main code
1474      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
1475      - subroutine FREEZE now limits only surface temperature
1476        (this means new output.txt for global_ocean.90x40x15,
1477         global_ocean.cs32x15, and global_with_exf)
1478    o added surface flux output variables to TIMEAVE_STATVARS
1479    
1480    checkpoint51n_pre
1481    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
1482    o added [#include "AD_CONFIG.h"] to all files that use the following
1483      defines:
1484      - ALLOW_ADJOINT_RUN
1485      - ALLOW_TANGENTLINEAR_RUN
1486      - ALLOW_ECCO_OPTIMIZATION
1487    
1488    checkpoint51m_post
1489    o incorporating changes to get TAMC/TAF working in genmake2
1490      - added new TAMC/TAF targets to the Makefile
1491      - various cleanups related to package handling
1492      - these changes should have no impact on the forward model
1493    
1494    checkpoint51l_post
1495    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
1496     - faster algorithm for cal_addtime.F
1497     - higher precision arithmetic, where needed
1498     - pkg/exf *startdate variables changed from calendar date to
1499       model integration time
1500    
1501    checkpoint51l_pre
1502    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
1503    o enable to apply restoring on S & T only in a latitude band.
1504    o update output (external_forcing_surf modif. change truncation errors)
1505       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
1506    
1507    checkpoint51k_post
1508    o change default to: useNHMTerms=.FALSE.
1509     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
1510       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
1511     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
1512        exp1, ideal_2D_oce
1513     - change data file of oceanic exp (leave the results unchanged for now)
1514       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
1515    o set gravitySign automatically according to the vertical coordinate used
1516      (and change sign: back to "logical" value: +1 when R increases downward)
1517    o added an include barrier to the default CPP_OPTIONS.h and
1518      removed the #include "PACKAGES_CONFIG.h" from it
1519    o fix a bug in mom_fluxform (from chk51j_post)
1520    
1521    checkpoint51j_post
1522    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
1523    o adjusted some flow directives (dynamics, thermodynamics)
1524    o added cubed-sphere case to test cost function
1525    o heckpoint_lev?_directives.h now include
1526      pkg-specific directives, whenever those are enabled.
1527    o Moving pkg-specific flow directives to corresponding pkg
1528      Moving pkg-specific differentiation list to corresponding pkg
1529      Moving pkg-specific checkpoint-lev storing to corresponding pkg
1530      ---> conventions are
1531           - pkg_ad.flow
1532           - pkg_ad_diff.list
1533           - pkg_ad_check_lev?_dir.h
1534    
1535    checkpoint51i_post
1536    o merge of the branch-genmake2
1537      - knowingly breaks the older genmake
1538      - automatic generation of all ALLOW_${PKG_NAME} defines
1539      - new testreport supersedes older testscript
1540    o large number of package inclusion and header cleanups
1541    checkpoint51i_pre
1542    
1543    o new output for adjoin of global ocean vector invariant
1544    o fix for checkpoint of thermodynamic seaice and bulk_force
1545    o Steph gchem various cleanups
1546    
1547    checkpoint 51h_pre
1548    o fixed some single quotes
1549    o modify gchem pkg to be more versatile
1550    o modifications to clean up dic pkg
1551    o add pkg/cfc
1552    
1553    checkpoint51g_post
1554    o provide links for ARPACK and ADM*TLM
1555    o start removing verification/vero/
1556    o update AD-related stuff
1557      (in particular some IF-statements in model/src/ routines)
1558    o adding to verification/global_ocean.90x40x15/ adjoint of
1559      vector invariant setup
1560    
1561    checkpoint51f_post
1562    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
1563    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
1564      of tracer Green's fucntions for ocean inversion project.
1565    
1566    checkpoint51f_pre
1567    o Added on-the-fly spatial interpolation capability
1568        "USE_EXF_INTERPOLATION" to pkg/exf.
1569      - This is a temporary Cartesian-grid hack until
1570        the super-duper ESMF coupler becomes available.
1571      - See verification/global_with_exf/README for usage example.
1572      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
1573        flags and modified pkg/seaice accordingly.
1574    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
1575        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
1576        non-local transport term.
1577    
1578    checkpoint51e_post
1579    o pkg/mom_vecinv:
1580      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
1581      - add time-ave diagnostic of vorticity advection.
1582    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
1583    o atmospheric geopotential: - include water vapor effect;
1584                                - use p^kappa in p* scaling.
1585    o land pkg: read initial state from files.
1586    o AIM : add stratospheric drag in the upper level
1587    
1588    checkpoint51d_post
1589    o change function ILNBLNK (=> last non-blank char.) to return zero
1590      (instead of the string length) when the string. char is empty
1591    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
1592    o modif's to restore TAMC compatibility
1593      - avoid "_d" constructs in PARAMETER declarations
1594      - avoid interrupting lines by comment lines
1595    o Use cluster local disks for purely local I/O
1596      vs. globally visible disks needed for ctrl stuff
1597      (merged from ecco-branch)
1598      - new active_file_loc... and mdsio_..._loc routines
1599      - affected packages: autodiff, ctrl, grdchk, mdsio
1600    
1601    checkpoint51c_post
1602    o introducing integer flag debugLevel
1603      - debLevZero: suppress all output
1604      - debLevA: standard
1605      - debLevB: equivalent to current debugMode=.TRUE.
1606    o introducing pathname variable mdsioLocalDir for mdsio
1607      that can be specified at runtime
1608      (relevant for cluster I/O to local disk)
1609    `
1610    >>>checkpoint51b_post
1611    adjoint of ptracers
1612    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
1613    o extended state in checkpoint_lev?, etc.
1614    o alternative ctrl/cost with tr1 or ptracer
1615    o new comlev1_bibj_ptracers
1616    o new ptracers.flow
1617    o made ptracers_forcing same as external_forcing_s
1618    o added verification for adjoint with ptracers
1619      - adm. grdchk fail so far
1620      - tlm. grdchk OK
1621      - checked tapelev/comlev recomputations: OK
1622    <<<checkpoint51b_pre
1623    
1624    checkpoint51a_post
1625    o added code for biogeochemistry package
1626      - new pkgs: dic, gchem
1627      - new subroutine in ptracers
1628    o modify code for biogeo packages
1629      - in model/src and pkg/ptracers
1630    
1631    checkpoint51
1632    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
1633      - autodiff, ctrl, exf, grdchk, seaice
1634      kept separate packages
1635      - cost, ecco, obcs
1636    o updating verification/internal_wave, verification/lab_sea
1637      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
1638    
1639    checkpoint50i_post
1640    o Preparing next differentiable checkpoint and sync
1641      of MAIN vs. ecco-branch
1642      - 1st step: this one is differentiable
1643      - 2nd step: next(! not this) checkpoint will have updated packages
1644                  from ecco-branch)
1645    
1646    checkpoint50h_post
1647    o new package "land": provide surface BC for AIM.
1648    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
1649    o AIM: use true log-P extrapolation for near surface temp (= as in
1650        F.Molteni paper) ; update aim.5l_cs output.
1651    o New variable in PARM03 for more flexible pickups
1652    o somewhat cleaned package initialisation sequence for
1653      ctrl/ cost/ ecco/ in packages_... routines
1654    
1655    checkpoint50g_post
1656    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
1657      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
1658      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
1659        made the default because of faster convergence than ADI
1660    
1661    checkpoint50f_post
1662    o exf totally restructured
1663      - replaced all exf_set_ routines by one generic exf_set_gen.F
1664        and made sure it's still differentiable
1665      - split exf_getffields.F into new exf_bulkformulae.F
1666      - exf_inscal_/exf_outscal_ suffixes consistent with field names
1667      - updated adjoint/makefile and relevant verif. accordingly
1668    
1669    checkpoint50f_pre
1670     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
1671          + change Evap over land. (update aim.5l_cs output)
1672     o added missing .cvsignores and made uniform across expts
1673     o changed configuration of tidal_basin_2d expt
1674     o added pkg/debug functions for tracing code in fatal crashes
1675     o tidied pkg/monitor to use MONITOR_OPTIONS.h
1676     o new fn in pkg/monitor to stop model if solution grows too big
1677     o removed lots of single quotes from comments
1678    
1679    checkpoint50e_post
1680    o make KPP work with PTRACERS
1681     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
1682       nearly a copy of kpp_transport_s
1683     - there is no analogue to SurfaceTendencyS, so I have to use
1684       gPtr(of the surface layer) instead
1685    o add a new platform SunFire+mpi (SunFire 15000) to genmake
1686    checkpoint50e_pre
1687    
1688    checkpoint50d_post
1689    o change kpp output from multiple-record state files to single-record state
1690      files analogous to write_state.F
1691    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
1692      analogous to the cg2d-related output.
1693    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
1694      so that writing to internal file fn (with length 512) fails.
1695    checkpoint50d_pre
1696    
1697    checkpoint50c_post
1698    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
1699    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
1700    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
1701    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
1702    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
1703    
1704    checkpoint50c_pre
1705    Merging from release1_p13:
1706    o bug fix for pkg/seaice dynamic solver
1707    o Added SEAICE_initialHEFF to pkg/seaice
1708    
1709    checkpoint50b_post
1710    o store u*,v* in gU,V instead of in guNm1,gvNm1
1711    o in order to put the momForcing out of the Adams-Bashforth:
1712      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
1713      to timestep.F
1714    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
1715    o re-generate output for highly sensitive test-exp:
1716       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
1717    
1718    checkpoint50b_pre
1719    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
1720    o corrected CPP option mismatch in exf_Bulk... functions for case
1721      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
1722    
1723    checkpoint50a_post
1724    o Bug fix for merging between c50 and KPP.
1725      ikey was passed from thermodynamics to kpp_calc via
1726      common block rather than being recomputed in kpp_calc,
1727      in contradiction with new key itdkey.
1728      New key ikppkey created, and tamc.h headers updated.
1729    
1730    checkpoint50
1731    - 2nd step of merge with ecco-branch:
1732      merge changes in ecco-branch back into main trunk
1733    - bug fix in find_alpha
1734    - more storing in gmredi_calc_tensor.F, kpp_routines.F
1735    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
1736    - merged some sliced AD support routines
1737    
1738    checkpoint49
1739    merged from ecco-branch:
1740    o exf:
1741      - Enable initialisation of forcing fields to constant
1742        (runtime) values.
1743      - in exf_getffields.F
1744        Reduce i-/j-loop to interior domain, discarding overlaps.
1745        That also fixes wrong TAF-key computations for key_1, key_2
1746        with bulf formulae.
1747      - exf_init.F modify #ifdef for exf_init_evap
1748      - exf_getffieldrec.F, ctrl_getrec.F
1749        The following INT-usages are not safe:
1750          fldsecs  = int(fldsecs/fldperiod)*fldperiod
1751          fldcount = int(fldsecs/fldperiod) + 1
1752        and were modified.
1753    o autodiff: checkpoint_lev...
1754      - updated storing for bulk formulae (some arrays were missing)
1755      - added state for seaice package
1756      - synchronized with main branch
1757    o DIVA:
1758      Modif.s in
1759      - the_main_loop.F
1760      - the_model_main.F
1761      and added cost_final_restore.F cost_final_store.F
1762      o With these changes, it is possible to fully separate
1763        the first forward run to compute the cost function (mdthe_main_loop)
1764        and adjoint runs over individual DIVA intervals (adthe_main_loop)
1765        into separate model executions.
1766        This enables better tuning of DIVA to given queue sizes.
1767      o Loss of cost function value in consecutive DIVA runs is
1768        fixed by storing to 'costfinal' file.
1769      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
1770        beginning/end of adjoint integration is accounted for.
1771      The current changes apply to TAF-1.4.26.
1772      TAF has one remaining bug, requiring one manual change
1773      (see MITgcm manual).
1774    o cal: synchronized between MAIN and ecco-branch
1775    
1776    checkpoint48i_post
1777    o Changes to restore differentiability of code w.r.t. previous tag
1778      (mostly adding new routines to make list and replacing
1779      pressure by totPhiHyd).
1780    o Updated and merged grdchk package
1781      - has both ADM and TLM checks
1782      - works for single- and multi-proc.
1783      - output cleaned
1784      - worked successfully for parallel DIVA
1785    o genmake:
1786      - Adding -platform=SP4
1787      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
1788    o Modif. for DIVA:
1789      ctrl_unpack should not be called in intermediate DIVA interval.
1790      (similar thing would apply for active files such as
1791      tbar, sbar, psbar, which should not be reinitialised;
1792      only relevant for ecco-branch)
1793    
1794    checkpoint48h_post
1795    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
1796    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
1797    o Added SEAICE_initialHEFF to pkg/seaice
1798    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
1799    
1800    checkpoint48g_post
1801    --- EOS:
1802    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
1803      store total Potential in totPhyHyd for diagnostics & EOS.
1804    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
1805    --- Pressure/geopotential gradient:
1806    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
1807    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
1808      ( changes results of global_ocean_pressure )
1809    o NLFS + z-coord.: add eta*Rho' contribution.
1810    o accurate phiHyd when using interface-W at the middle between 2 centers
1811     ( changes results of ideal_2D_oce )
1812    o includes r* 2nd term in potential gradient.
1813    
1814    checkpoint48f_post
1815    Merging from release1_p12:
1816    o Modifications for using pkg/exf with pkg/seaice
1817      - improved description of the various forcing configurations
1818      - added basic radiation bulk formulae to pkg/exf
1819      - units/sign fix for evap computation in exf_getffields.F
1820      - updated verification/global_with_exf/results/output.txt
1821    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
1822      (SBO) core products, including oceanic mass, center-of-mass,
1823      angular, and bottom pressure (see pkg/sbo/README.sbo).
1824    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
1825      to avoid negative values in shallow regions.
1826      - updated verification/natl_box/results/output.txt
1827      - updated verification/lab_sea/results/output.txt
1828    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
1829    o Added useSingleCpuIO option (see PARAMS.h).
1830    o Updated useSingleCpuIO option in mdsio_writefield.F to
1831      work with multi-field files, e.g., for single-file pickup.
1832    o pkg/seaice:
1833      - bug fix in growth.F: QNET for no shortwave case
1834      - added HeffFile for specifying initial sea-ice thickness
1835      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
1836    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
1837      kpp_transport_t.F, forward_step.F, and the_main_loop.F
1838    o pkg/seaice:
1839      - adjoint-friendly modifications
1840      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
1841    
1842    checkpoint48e_post
1843    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
1844    o dynamics: change definition of computational domain & adapt mom_fluxform
1845      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
1846    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
1847        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
1848        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
1849        global_ocean.90x40x15 global_with_exf global_ocean_pressure
1850        inverted_barometer solid-body.cs-32x32x1
1851      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
1852    
1853    checkpoint48d_post
1854    o in preparation for r*:
1855     a) use pre-computed gradient of hydrostatic potential:
1856        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
1857     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
1858        => affects results of glob_oce_pressure (different truncation error)  
1859      update output.txt of ideal_2D_oce & global_ocean_pressure
1860    
1861    checkpoint48d_pre
1862    o in preparation for r*:
1863      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
1864      pass the 2 comp. of the grad. as arguments to momentum S/R.
1865      but for the moment, only used if it does not change the results.
1866    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
1867    
1868    checkpoint48c_post
1869    Modifications in treatment of initial flux forcing controls
1870    to avoid extra storing of flux fields.
1871    
1872    checkpoint48c_pre
1873    o Added tidal_basin_2d experiment (currently 1D!)
1874    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
1875    
1876    checkpoint48b_post
1877    o r* coordinate added in #ifdef NONLIN_FRSURF block.
1878     (modification to pressure gradient not yet implemented)
1879    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
1880      (for U & V) that are used for vertical advection of momentum.
1881    
1882  checkpoint48a_post  checkpoint48a_post
1883  o In preparation for r*, use temp. array to compute vertical transport  o In preparation for r*, use temp. array to compute vertical transport
1884     in flux-form momentum pkg. => change results of few test-exp.     in flux-form momentum pkg. => change results of few test-exp.

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