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revision 1.121 by heimbach, Tue Jan 21 19:44:45 2003 UTC revision 1.627 by jmc, Mon Mar 13 04:36:59 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 AIM+thSIce: fix sign of Short-Wave through the Ice ;
8      update output.txt of exp. aim.5l_cs.thSI
9    o various mnc cleanups and improvements:
10      + shrink lookup tables by factor of ~4
11      + better error reporting when running out of lookup space
12      + able to handle longer path/file names (up to 500 chars)
13    o adjoint:
14      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
15      - TBD: "hidden" mom_vecinv recomp. in dynamics
16    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
17     (allow to differentiate between forcing components using new integer flags:
18      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
19     and add new flag to put Dissipation tendency out of Adams-Bashforth.
20    o ecco
21      - enable trend removal from SSH anomaly obs.
22    o adjoint
23      - a fix for PmEpR when #undef EXACT_CONSERV
24      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
25      - try to fix "hidden" recomp. in forward_step for NLFS
26        (NLFS seems broken sometimes after I checked it in)
27    o seaice:
28     - add c-grid version of the dynamic solver:
29       + three new routines that are the c-grid substitute lsr, dynsolver
30         and ostres
31       + put a few fields that were local to dynsolver into global common
32         blocks, so that I can move the computation of stresses etc into
33         seaice_lsr (saves coding but may break the adjoint).
34     - replace more hardwired parameters by runtime parameters
35     - add ice masks that mask the rhs of the implicit solvers where there
36       is no ice (commented out in seaice_dynsolver, because i am not sure
37       if this works properly), eventually this should replace the clipping
38       of ice velocities in seaice_dynsolver to +/-40cm/s.
39    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
40      include it only where its needed
41    o move balancing of fluxes before the call of external_forcing_surf
42    o seaice:
43      - correct units of turning angles (now they are really in degrees)
44      - move computation of GWATX/Y out of main routine into dynsolver
45      - initialize GWATX/Y in seaice_init
46    o Apply mask on Fresh-Water flux (needed for SSH forcing).
47      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
48    o seaice: add runtime flags for turning angles (default to zero)
49    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
50      and trend from exf forcing and ctrl control adjustments
51    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
52      (since checkpoint57x_post)
53    o change the default rotation period to 86164.s = the Earth rotation
54    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
55      and based on a reference stratification. Tested within hs94.cs-32x32x5.
56    o seaice advection: add code for choosing between the default (2nd order
57      central differences) and multiDim advection schemes provided by
58      pkg/generic_advdiff
59    o seaice:
60      - removed all references to SEAICE_GRID.h fields from
61        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
62        (cubed-sphere configuration will change a little)
63      - grid computations in seaice_init are obsolete now.
64      - cleaned up code a little so that is easier to read (hopefully).
65      - added new (better?) discretizations of default advection and diffusion
66        (turn on with SEAICEuseFluxForm)
67      - replace 1 in 3d global fields by kSurface in growth.F
68      
69    checkpoint58a_post
70    o seaice:
71      - bug fix in advect.F
72    o shelfice:
73      - separate shelfice load anomaly from pload (breaks with time
74        dependent forcing), => introduce constant field shelficeLoadAnomaly.
75        Its default is 0., but it may be computed more cleverly from (unknown)
76        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
77        done offline. A good approximation of the pressure load anomaly is
78        necessary to avoid large initial adjustment processes underneath
79        deep-reaching shelfice.
80      - small fix in ISOMIP shelfice_thermodynamics
81      - add more sophisticated thermodynamics of Hellmer (1989), this is
82        now the default
83      - give a few constants more intuitive names
84    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
85      if bulk formulae are used in long integration (especially EmPmR). Turn
86      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
87      if balancePrintMean, the imbalance that is substracted is printed to
88      STDOUT.
89    o fix bug (typo) in obcs_apply_eta.F
90    o add a new package shelfice which enables us to model the circulation
91      underneath shelf-ice with draughts of hundreds of meters.
92     - works
93     - to do: + include improved thermodynamics
94              + check whether kSurfC (from model/inc/SURFACE.h) can be used
95                instead of new field kTopC
96              + can we use topoFile, Ro_surf and existing code in ini_depth.F
97                instead of new field R_shelfIce and new code in ini_depth.F
98                and ini_mask_etc.F?
99              + adjust vertical mixing schemes?
100    o seaice pkg:
101     - add a cpp-flag to include a simple formula for a salinity dependent
102       freezing point of sea water at the surface
103     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
104       meridional stresses are now different (and hopefully correct)
105    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
106       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
107       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
108    o pkg/diagnostics: add options and parameters for regional-statistics
109       diagnostics ; define regions by reading a region-mask from a file
110       (might add other options later)
111    o pkg/bulk_force:
112     - add option and parameters to use AIM surface-flux formulae.
113     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
114       others forcing fields (defined in PARM05, parameter file "data") are loaded
115       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
116     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
117     - use the right EXCH call for uwind,vwind (to work on CS-grid).
118     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
119       and parameters (note: calcWindStress replaces .NOT.readwindstress).
120     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
121    
122    checkpoint58
123    o add "--embed-source" option to genmake2 which, when the supporting
124      tools can be compiled (as determined by genmake2) will turn on the
125      embed_files package which then embeds the entire MITgcm source code
126      (*.[fFhc] + Makefile) used for the build within the executable
127      - requested by CNH but off by default
128      - adds a paltry <9MB to the mitgcmuv executable in most cases
129      - only writes the output when useEMBEDSRC in eedata is true
130    o clean up 3-dim. relaxation codes:
131      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
132      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
133      * Thanks to Tom Haine for testing!
134    
135    checkpoint57z_post
136    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
137      affects output (@ truncation level) of exp. plume_on_slope ; updated.
138    o fix the pickup behavior for obcs in combination with ptracers
139    o fix a bug in ptracers_external_fields_load
140    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
141      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
142    o transfered surface NH pressure to eta field (if exactConserv).
143    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
144         and update lab_sea output.txt file.
145    o completing 3-dim. relaxation code: additional term
146         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
147      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
148      * At compile time, in "EXF_OPTIONS.h" set
149          #define  ALLOW_CLIMTEMP_RELAXATION
150          #define  ALLOW_CLIMSALT_RELAXATION
151      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
152          tauThetaClimRelax3Dim = 15552000.0,
153          tauSaltClimRelax3Dim  = 15552000.0,
154      * 3 cases:
155          1) Use a constant-in-time 3-dim. field
156          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
157          3) Real-time relax. to time-evolving prescribed field
158    o Adding Laplacian-type smoothness constraint on
159      initial and boundary (forcing) controls (ic, bc)
160      * enable at compile-time via
161        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
162      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
163      * Absolute scale somewhat unclear so far
164      * no area weighting was included since no other cost term does so far
165    
166    checkpoint57y_post
167    First step for a NLFS adjoint
168    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
169    o new init. routines for calc_r_star, calc_surf_dr
170    o still need to deal with ini_masks_etc
171    o testreport seemed happy
172    checkpoint57y_pre
173    
174    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
175    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
176    o add new offset feature to offline pkg (plus minor cleanup)
177    o cfc fixes for final year of integration
178    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
179      be in GCHEM_OPTIONS).
180    
181    checkpoint57x_post
182    o fix testreport Pb in multiple test experiment.
183    o cleanup our namelist syntax in verification:
184      - make it more F95 standards compliant (some work still needed)
185      - allows the vast majority of our tests to work with gfortran
186    o Non-Hydrostatic:
187     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
188     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
189    o Allow to apply AB on T,S rather than on AB(gT,gS):
190     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
191     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
192       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
193     - need a "clever" read_pickup to restart from the other AB formulation
194    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
195    o remove some unused variables (reduces number of compiler warnings)
196    o adjoint
197      * Disable useVariableViscosity for adjoint for time being
198        (there are a number of extensive recomputations)
199      * Initialize certain variables needed for adjoint
200    
201    checkpoint57w_post
202    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
203                 fix the singleCpuIO RS version of MDSWRITEFIELD
204       and add a WARNING if using globalFiles=T with multi-processors.
205    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
206      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
207    o tracer advection scheme:
208      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
209       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
210       was not very convenient).
211      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
212       (further tests needed for the implicit DST & Flux-Limiter schemes).
213    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
214      and sRef for convenience, handy, when you want to initialize
215      ptracers in a large domain with a constant non-zero value. Also,
216      untangle ptracers_init.F a little.
217    
218    checkpoint57v_post
219    o change dome exp. to use variable viscosity in side-drag terms.
220    o remove all the files from the cfc_offline test since they are now
221      incorporated into tutorial_cfc_offline which has been producing
222      identical results for a few days of testing
223    o add new parameter: sideDragFactor to enable half-slip-side BC
224      and change side-drag S/R to use viscosity from mom_calc_visc
225      (can switch back by setting sideDragFactor=0.); affects results at
226      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
227       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
228    o vorticity & strain are now computed without masking, to account for
229      no-slip-side BC in variable viscosity calculation ; mask is applied
230      anyway later on, before computing advection/coriolis terms.
231    o modify exp4 to test new obcs support for reading from external files
232      and for passive tracers
233    o fix behavior of ptracers_monitor when monitor output is written to a
234      netcdf-file; still not independent of monitor.F (writes in the same
235      file).
236    o change default value of tRef (put a uniform, meaningful value for ocean
237      & atmos) and initialize sRef (was missing, as Martin mentioned).
238    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
239      to be proportional to enstrophy dissipation length.  Thus,
240       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
241      This is now consistent with Smagorinsky and with the manual.
242    
243    checkpoint57u_post
244    o OBCS and PTRACERS: add open boundary support for passive tracers
245      - either use homogenous (pseudo) v.Neumann conditions or prescribe
246        OB-values from file; this is not different from the way theta and salinity
247        are treated
248      - however, Orlanski-radiation conditions are not supported, and the model
249        will stop if you use pTracers and Orlanski at the same time.
250      - beefed up the rountine obcs_external_fields_load: now only those open
251        boundary values are overwritten with values from files for which there
252        are really files, otherwise the OB-fields remain untouched. This makes
253        it possible to use different OBs at different ends of the domain (as
254        with EXF)
255    o reduce number of exch calls in shap_filt (s2).
256    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
257      truncation level) 4/5 MLAdjust test results (11&12 digits match).
258    
259    checkpoint57t_post
260    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
261    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
262      same truncation, independent of the face number: affects affects several
263      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
264    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
265      note that biharmonic viscosity + no-slip was not tested in any experiment.
266    o fix bug in non-linear free-surf side-drag ; generate new output for
267      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
268    o make mnc honor the writeBinaryPrec flag for most kinds of output
269    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
270    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
271      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
272    o add brackets in multi-terms sum to get same truncation, independent of
273      the face number (manage to get exactly same value of gU,gV at the cs-edge)
274      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
275    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
276      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
277      a maximum grid-scale Reynolds number.  Also, changes all length calculations
278      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
279      Suggested values of viscosity parameters found in mom_calc_visc.
280      Many new viscosity diagnostics available.
281    
282    checkpoint57s_post
283    o Add clearing-house for viscosity calculations, mom_calc_visc and
284      correct numerous bugs in LeithD and Smagorinsky discretizations.  
285      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
286      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
287      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
288      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
289      The Strain-Tension form is now called with useStrainTensonVisc=.true.
290      ViscAhStrain and viscAhTension are now retired.
291    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
292    o In response to JMC's bug report, genmake2 now ignores any soft-links
293      that it finds in the *current* directory when searching for files.
294      Soft-links found in any other source directories will still work as
295      they did before.
296    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
297      a C routine to unlimit the stack size
298    o mnc-ify pkg/aim snapshot vars
299    o mnc-ify pkg/land as requested by Daniel
300    o various changes to mnc including:
301      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
302      - output can now be grouped so that all files within a group
303          change the ITER portion of their names in lock-step together
304      - can now read ("global") PER-FACE (in addition to PER-TILE) files
305          and works with both EXCH1 and EXCH2 (but needs more testing)
306      - writing works for all verification test cases w/ g77 on Linux
307    
308    checkpoint57r_post
309    o make MNC variable initialization happen earlier
310    o add diagnostics for (almost) each term of the momentum Eq.
311    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
312    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
313    o remove MINIMAL_TAVE_OUTPUT option ;
314      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
315    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
316      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
317    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
318    o add time-dependent SST, SSS control
319    o cost terms in ecco/ modularized (new cost_generic.F)
320    o cost_averages routines are modularized (new cost_averagesgeneric.F)
321    o new infrastructure for seaice model vs. obs misfits in seaice/
322      * driver from the_main_loop.F is seaice_cost_driver.F
323      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
324      * gradient check in Exp. 6a of natl_box_adjoint/
325    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
326      (see README file)
327    
328    checkpoint57q_post
329    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
330    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
331      - bug was reported by Jean-Michel and Ian Fenty
332    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
333      update exp. cpl_aim+ocn output.
334    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
335      Needed for high-res. runs with large global files
336      to be able to limit tapelev size
337    o Changed some tests for adjoint:
338      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
339      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
340      * global_ocean.90x40x15/ back to default 3-level checkpointing
341    o Modifications to enable scripted COMMON to MODULE conversion
342      * verification/OpenAD/code/ has necessary scripts and description;
343      * converts, compiles and runs successfully;
344    
345    checkpoint57p_post
346    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
347    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
348      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
349    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
350    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
351      (was already the case for dissipation with mom_vecinv,
352       and also the case for grad.PhiHyd when staggered-timeStep)
353      This will allow to put dissipation out-off the AB time-stepping.
354     Unfortunately, affects truncation error. Update output of exp. that "fails"
355      (cg2d matching number) and leave the others for later: front_relax(10),
356      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
357      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
358    
359    checkpoint57o_post
360    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
361      (2) its ready to be documented during the 20050801 DocFest
362    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
363      for ideal_2D_oce and lab_sea on linux_ia32_g77
364    o set to #undef CTRL_SET_OLD_MAXCVARS_30
365      in global1x1_tot/code_seaice_adj to access indices 32, 33
366      (worth another tag)
367    
368    checkpoint57n_post
369    o adding precip control xx_precip 32
370    o adding swflux control xx_swflux 33
371    o Replacing 10 forcing penalty cost routines by 1 generic.
372    o Implementing partitioning in time-mean and variable adjustment
373      for atmos. state.
374    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
375    o in natl_box_adjoint:
376      * updated exp 1 to 10
377        (but does not have time-mean vs. variable split results yet)
378    o updated global1x1/*_seaice_adj/
379      to incorporate latest changes
380    o enable useSingleCpuIO for mdsio vector routines
381      (applies in particular to tapelev I/O)
382    o removed inefficient K-loop in all active_file*control*.F
383    
384    checkpoint57m_post
385    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
386      and advect_cs (use EXCH-2 and standard cs-32 grid files).
387    o pkg/exch2: filling of face-corner halo regions is optional
388      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
389    
390    checkpoint57l_post
391     tag before updating tutorials (pre-release-2)
392    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
393       for output and interpolation of input fields onto model grid)
394    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
395       Affects results of exp. rotating_tank ; update output.txt.
396    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
397          and taking the square quantity and/or using a fraction-weight field.
398    o fix aim_diagnostics_init.F mate numbers.
399    o add mnc output capability to diagnostics/diagstat and update
400      our cvsignore files for the ACSII output generated
401    
402    checkpoint57k_post
403    o lab_sea now uses diagnostics package and provides a suite of
404      new EXF diagnostics output.
405    
406    checkpoint57j_post
407    o exf
408      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
409        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
410        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
411      * extended diagnostics output
412        - now includes all EXF variables
413        - hs, hl moved to common block
414        - separate S/R for diagnostics, called after ctrl vector is added
415        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
416        - EXFqnet contains true Qnet (i.e. includes qsw)
417      * updated verif. lab_sea, global_with_exf
418      * Rearranging hflux (exf_mapfields -> exf_getforcing)
419        to ensure that diagnostics sees a true EXFqnet
420    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
421    o diagnostics pkg: change pointers so that 1 diagnostic can be used
422      several times with different frequencies.
423    o mnc-ify the thsice package as requested by Daniel Enderton
424      - the monitor--MNC output needs work
425      - many attributes need to be added (most are currently blank)
426    o mnc-ify theaim_v23 package as requested by Daniel Enderton
427      - many attributes need to be added (most are currently blank)
428    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
429    o add Sadourny like discretization to the 4th.O vorticity advection scheme
430    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
431      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
432         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
433    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
434     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
435    
436    checkpoint57i_post
437    o Diagnostics package was changed: diagnostic allocation is now deactivated
438      by setting an empty file name in the namelist (used to be by setting 0 frequency)
439    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
440      add 1rst Order upwind vertical Shear.
441    o add a quick fix for A/B checkpointing in OFFLINE mode
442    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
443      end-run around the C/Fortran linking horror in eesup/src/timers.F
444    o added pkg/runclock: allows user to terminate run based on wall clock
445    o added non-hydrostatic scaling parameter: nh_am2
446    o pkg/my82: futile attempt to make results compiler-independent by adding
447      some "_d 0", etc. no effect.
448    o for mnc output, fill the 'T' coordinate var with myTime and create a
449      separate 'iter' variable for iteration count
450    o pkg/diagnostics:
451      add new capability: output of Global/Regional & per-level statistics ;
452      tested against monitor output (including land & thSIce) on various exp.
453    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
454    
455    checkpoint57h_done
456      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
457      data.diagnostics, data.gchem, data.ptracers) is done.
458    
459    o pkg/diagnostics: prepare for Global/Regional statistics.
460      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
461    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
462      and rename it: DIFFERENT_MULTIPLE
463    
464    checkpoint57h_post
465    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
466    o pkg/diagnostics: change output frequency, now in seconds (instead
467      of Nb of iterations). This requires to change data.diagnostics.
468    checkpoint57h_pre
469    
470    o in mnc, let the user create the output dir if both mnc_outdir_date
471      and mnc_outdir_num are false
472    o add fflags() to pkg/diagnostics which allows one to specify, on a
473      per-file basis, the file precision [default behavior is unchanged]
474    o added diagnostics to pkg/kpp, including computation of mixed layer
475      depth based on a temperature/density criterion
476    o updated verification/natl_box to test the new pkg/kpp diagnostics
477    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
478    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
479    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
480      not mnc -- this mistake was found by JMC and is now corrected
481    
482    checkpoint57g_post
483    o add Adams-Bashforth 3rd Order time stepping:
484      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
485      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
486    checkpoint57g_pre
487    
488    o make lambda[Theta,Salt]ClimRelax spatially varying
489      (default remains spatially uniform constant based on tau)
490    o added new control variables
491      * init. uVel, vVel, etanN
492      * lambda[Theta,Salt]ClimRelax
493    o separate masks used for ctrl_pack/unpack 'from write_grid' output
494      (suggested by G. Forget)
495    
496    checkpoint57f_post
497    o add parameter "baseTime" = model base time = time at iteration zero
498      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
499      account for baseTime shift
500    o move Coriolis arrays from PARAMS.h to GRID.h
501    checkpoint57f_pre
502    
503    o mnc-ifying the seaice package
504    o introduced an alternative length scale calculation for use in the limiting
505      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
506    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
507    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
508      as well as grad(vort3).  Made it compatible with both approximate form
509      for the cubed sphere and full form of these gradients.  Added flag
510      useFullLeith to select between approximate and full form.  
511    o add "d0" in getcon.F to reduce differences between compilers/platforms
512      update output.txt of exp. fizhi-gridalt-hs
513    o change port_rand funtion to allow to set the seed.
514    o fix obscure MNC bug involving conversion between reals and integers
515      - it caused no problems with certain (eg. gcc, ifc) compilers but the
516        new version is now more standards-compliant
517    o adjoint-related modifications
518      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
519      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
520      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
521    
522    checkpoint57e_post
523    o Adding eddy stress controls a la Ferreira et al.
524    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
525    
526    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
527      update output.txt of exp. fizhi-gridalt-hs
528    o add more "Z" dimensions and associated coordinate vars to MNC
529    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
530    o parameter calendarDumps: when set, approximate months (30-31 days) and years
531      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
532      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
533      months and years.  Requires pkg/cal.
534    o diagnostics: add pickup functionality
535      - off by default for backwards compatibility
536      - current version only uses MDSIO -- MNC will be added
537    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
538    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
539    
540    checkpoint57d_post
541    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
542    o modify verification/ideal_2D_oce so that it tests the creation of mnc
543      output from the diagnostics package
544    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
545    o make genmake2 more portable by using ".$FS" instead of ".f" for more
546      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
547    o add coordinate variables to the MNC output from the diagnostics package
548    o change MNC-flags default value: true when useMNC=TRUE
549    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
550      the ability (off by default) to read the grid information using MNC
551    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
552    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
553    o do snap-shot diagnostics at the middle of the time-interval (instead of
554      at the end).
555    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
556      new test for AIM with thSIce + slab-ocean
557    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
558    o move state variable diagnostics to the beginning of the time step ;
559      (note: still needs some work specially for snap-shot diagnostics)
560      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
561    
562    checkpoint57c_post
563    o Change testing option (-ieee) to get closer agreement between g77 & ifort
564    o generate new output.txt files on faulks with g77 & the new -ieee option
565    checkpoint57c_pre
566    
567    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
568      update output.txt of exp. global_ocean.90x40x15
569    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
570      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
571    o add saltFlux(+File) forcing capability with periodicExternalForcing
572    o allow to use pkg diagnostics for GM-Redi & ThSIce output
573    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
574    o improvements for the MNC output from DIAGNOSTICS:
575      - correct handling of the unlimitied dimension
576      - all dims now have associated coordinate variables
577      - variables located at U, V, and Corner ("Z") points are now written
578        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
579        *all* data points are output
580    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
581    o added pkg/seaice/seaice_monitor.F
582    o mdsio_readfield.F can now read files visible only to master MPI process.
583    o pkg/seaice: some test code for ice-modified ocean stress
584    o exf_getffields interpolation defaults to bilinear for all scalar forcing
585      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
586      spurious negative numbers for precipitation and humidity.  Will cause
587      some small numerical differences for integrations using pkg/exf/exf_interp.F.
588    o pkg/ctrl/
589      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
590        May be enabled via doPackDiag
591      *  introduce z-scaling of
592         + gradient (doZscalePack) and
593         + control (doZscaleUnpack)
594    o pkg/mdsio/
595      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
596      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
597    
598    checkpoint57b_post
599    o simplify options in diagnostics_fill arguments (remove weird combinations)
600    o fix MNC coordinate variables so that they now contain per-face index
601      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
602      general, EXCH2 grids are only aligned to a "local" coordinate system
603    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
604    o Implement instantaneous output within pkg diagnostics:
605      setting a negative frequency in data.diagnostics produces
606     "snap-shot" output (as opposed to time-average if freq > 0)
607    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
608      NOTE: change ptracer diagnostics name: use 2 characters to work with
609            more than 9 tracers. Add also diagnostics of advect & diffus flux.
610    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
611      becomes the coordinate variable for the 'T' dimension
612    o add CF-style coordinate variables to MNC
613      - just a first cut:  numbers are meaningless on the cubesphere and
614        missing along the T axis but otherwise it works!
615    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
616    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
617    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
618      this is based directly on what the model compute, so that the content of
619      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
620    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
621    o clean up build options files for SunOS, in particular
622      - remove -traditional from xmakedepend
623      - change -xarch=v9 to -xarch=native for f77
624      - restore use of make (not gmake)
625      - add CC=gcc if using g77
626    o changes per discussion of AM, JMC, & EH3 today:
627      - move redundant "grid" variables out of "state" -- in preparation of
628        creating proper CF-style coordinate variables and in recognition
629        that any/all grid variables can be easily copied (eg. w/NCO) from
630        the grid files into any of the other NetCDF files
631      - *always* output grid variables with MDSIO (this will eventually be
632        changed)
633      - output MNC grid file if useMNC is true
634    o every instance of _END_MASTER() has been found and replaced with
635      _END_MASTER( myThid ) in order to satisfy certain picky Sun
636      preprocessors
637    o re-arrange diagnostics pkg initialisation:
638     - allow each package to extend the available diagnostics list
639     - add some checking and fix small problems (multi-threaded, ...)
640     - new S/R diagnostics_fill (replace fill_diagnostics):
641       look through the short list of active diag. (instead of the long list)
642       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
643    
644    checkpoint57a_post
645    o this set of changes restores TAMC compatibility
646      tested for global_ocean.90x40x15 adjoint on trough
647      (what a pain)
648    
649    checkpoint57a_pre
650    o some modifs in tools/build_options for sunos
651    o call ctrl_pack for ctrl at end for optimcycle=0
652    
653    checkpoint57
654    o add horizontal bi-harmonic viscosity for vertical velocity
655      - new parameter viscA4W (defaults to viscA4)
656      - affects only non-hydrostatic code
657      - to be done: no-slip lateral boundary conditions
658    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
659    o implement Implicit Vertical advection for pTracers
660    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
661      (implemented also for implicit vertical diffusion & advection)
662    o OBCS: extend application of tracer open boundary conditions
663      to a strip beyond the boundary of width Olx/Oly
664    o add call monitor to TAF set of required calls (flow directives)
665      and include in natl_box_adjoint
666    o untangle a few ifdefs related to cost, ctrl, autodiff
667      untangel a few ALLOW_ECCO_OPTIMIZATION
668    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
669      (theta2, salt2 in ecco_cost_weights)
670    
671    checkpoint56c_post
672    o OBCS as control variables
673      - update ctrl_ad_diff.list, obcs_ad_diff.list
674      - remove balance of obcs controls from default
675      - fix index bug nobcs in ctrl_init
676      - fix dummy fields filen in ctrl_pack
677      - add dummy weights for obcs
678    o lsopt: comment out fort.94 output
679    o optim:
680      - remove unnecessary header files
681      - adjusted namelists
682      - add xerbla.F to Makefile
683    o exf:
684      - multiple modifications of exf_check_range
685      - unit change in exf_init_runoff from [m/year] to [m/s]
686    o mdsio:
687      - i/o-vector change debugLevel from debLevA to debLevB
688    
689    checkpoint56b_post
690    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
691      is called from DO_THE_MODEL_IO
692      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
693      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
694      - clean up PTRACERS_WRITE_TIMEAVE a little
695    o add another verification experiment that tests both the cfc-pkg and
696      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
697      reactive tendencies treated inline with regular timestepping
698    o testreport previously did a lousy job of comparing small numbers, so
699      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
700      implemented in the little c-progam tmp_cmpnum.c which is embedded in
701      testreport.
702    o ptracers_monitor: bug fix for MPI
703    
704    checkpoint56a_post
705    o GCHEM: finish reorganizating the package
706      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
707        (introduces another 3D-array for each passive tracer, but only if
708        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
709        gchemTendency is not needed because the timestep is done separately)
710      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
711      - GCHEM is now---more or less cleanly---separate from PTRACERS
712      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
713        so clear to me how that should be done in a general way.
714    o CFC: improve formatting of output in CFC_ATMOS
715    o PTRACERS:
716      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
717        that ALL experiments with ptracers enable can be checked. This makes
718        GCHEM_MONITOR obsolete.
719      - include a runtime parameter PTRACERS_monitorFreq that defaults to
720        monitorFreq
721      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
722    o add PTRACERS (PTR0[1-5]) to testreport output
723    o exf_check_range:
724      * default changed to .TRUE.
725      * will check values for niter0 if debLevA, every timestep if debLevB
726      * STOP in exf_check_range if 'out of range'
727      * range chosen generous to allow for potential extema
728      TBD: a version with stricter range
729           permitted range would be runtime parameters
730    o GMredi:
731      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
732      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
733      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
734    o GCHEM:
735      - move call to GCHEM_FORCING_SEP, so that it is now called before
736        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
737      - introduced a useGCHEM runtime flag and applied it everywhere.
738      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
739        this flag is now only visible within GCHEM-pkg routines.
740      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
741        be replaced by a 3D array that is computed before thermodynamics; for
742        this, the tracer ID iTracer had to be included into the parameter list
743        of ptracers_forcing
744      - set up forward_step to call gchem_forcing, that will replace
745        gchem_forcing_int in ptracers_forcing
746      - cleaning up
747    o small cleaning of exch2: remove files that are also in eesupp/src
748    
749    checkpoint56
750    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
751    o mnc: cleanup "full" files--fixes out-of-memory problem
752    o ECCO-GODAE
753      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
754      * fully merged and updated from SIO code
755        windstress sign change affects
756        - exf_inscal_[u/v]stress
757        - sign of xx_tau[u/v] adjustments
758        - signs in cost_scat
759      * ctrl_get_gen: avoid update of tau[u/v] for first few days
760      * natl_box_adjoint updated and compressed
761      * 2-level checkpoint switch added
762        (tested in EXP. 1 of natl_box_adjoint)
763      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
764    o SVD
765      * first complete, non-hacked version for SVD calculations
766      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
767        performed via direct access files admtlm_vector.it????
768        (via ctrl_[un]pack)
769      * optimcycle is used for ARPACK iteration counter
770        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
771      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
772        and add linear transforms where necessary
773      * controls are initial/final SST, SSS (can be extended; need to check
774        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
775    o mdsio: filename info to both stderr, stdout
776    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
777      from sign change
778    
779    checkpoint55j_post
780    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
781      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
782    o add consistent build directories and .cvsignore files to verification
783    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
784    o make all subroutines 30 or less characters in length for certain older
785      compilers to work (a thorough search only turns up two routines in
786      pkg/ptracers)
787    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
788      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
789    
790    checkpoint55i_post
791    o change arrays for total vertical diffusivity (2.D if explicit,
792      3.D if implicit) ; each ptracer uses its own background value.
793    o added mnc/NetCDF output capability to ocn_compon_interf
794      - added bits to verification/cpl_aim+ocn so that it can run on
795        ITRDA and other clusters without the mpirun "-wd" option
796    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
797      configuration
798    o give MNC the ability to create additional files rather than
799      exceeding a specified file size limit "MNC_MAX_FILESIZE"
800      - the default is just less than 2GB which is a practical limit
801        on many systems
802    o Compute the non-local term using either KPP vertical diffusivity (=default)
803       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
804    
805    checkpoint55h_post
806    o add verification test "vermix"
807    o remove all the *_ioinc flags and replace with the single global
808      outputTypesInclusive flag
809    o allow to set a vertical profile of vertical diffusivity for T & S
810    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
811    o useMNC moved from data.mnc to data.pkg
812    
813    checkpoint55g_post
814    o Renaming carbon AD experiments to comply with testreport conventions
815    o Updating adjoint of Held-Suarez hs94.1x64x5
816    o Fixing directives for non-ECCO forward_step, after ECCO directives
817      have been fixed to avoid recomp. of do_oceanic_phys
818      Works well for global_ocean.90x40x15,
819      but recomp. issue remains for carbon
820    o Updating adjoint output for natl_box_adjoint after
821      pkg/ecco has been modified (see taga c55d_post)
822    
823    checkpoint55f_post
824    o rename to timeave_init_fixed
825    
826    checkpoint55e_post
827    o some delicate re-shuffle of store directives to avoid one
828      extra call of do_oceanic_physics
829      affects ecco_the_main_loop.F, do_oceanic_physics.F
830      checkpoint_lev1_directives.h
831    o NB: this may break global_ocean adjoint temporarily,
832      but it is clear how to fix it. Will do later, need this now.
833    
834    checkpoint55d_post
835    o ECCO specific cost function terms (up-to-date with 1x1 runs)
836    o ecco_cost_weights is modified to 1x1 runs
837    o modifs to allow observations to be read in as
838      single file or yearly files
839    o enable to read exf forcing fields as either
840      single file or yearly files (flag useExfYearlyFields)
841    checkpoint55d_pre
842    
843    o switch between 2-level and 3-level checkpointing
844    o add ability of MNC to write local and "partial" (eg. 2D slices where
845      the full 3D field is never actually stored) arrays to NetCDF files
846      with the correct (that is, the complete multi-dimensional) set of
847      array indicies
848      - used in mom_vecinv() to write the diagFreq output
849      - tested (demonstrated) in verification/aim.5l_cs
850    o further mnc-ification
851      - add verification/lab_sea to the list with mnc setups
852      - fix undefined mnc v-names in cd_code
853      - add kpp to mnc output (both snapshot and timeave)
854    o non-hydrostatic code
855      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
856        in calc_gw.F
857      - defaults to viscAh
858      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
859        friction or Leith) in non-hydrostatic mode, as long as there is
860        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
861    o pkg/cost
862      extend simple cost functions to treat time mean quantities
863      (T,U,V) via cost_accumulate_state from cost_tile
864    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
865        be 2 times larger than the minimum size the advection scheme requires.
866        now get a perfect conservation of salt in advect_cs test-exp (updated)
867    o GGL90 (Gaspar's TKE mixed layer)
868      - add horizontal diffusion of TKE, requires exchanges in
869        do_fields_blocking_exchanges, horizontal diffusivity is zero by
870        default. In OPA there is no horizontal diffusion of TKE but the
871        mixing coefficients are computed from a horizontal average of TKE of
872        6 points or so. I think that diffusion has a little more physical
873        justification.
874      - clean up ggl90_calc in the hope of reducing memory usage (this hope
875        was in vain)
876      - mask tke-variable in ggl90_init
877    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
878    o fix biharmonic diffusion on CS-grid.
879    o more obcs stuff
880      - added obcs_external_fields_load as an alternative to the EXF-pkg option
881        for reading boundary values. This routine is called from
882        obcs_prescribe_read
883      - updated obcs_check
884      - changed sponge layer relaxation parameter units for days to seconds
885      - turned off sponge layer by default
886      - changed argument list of OBCS_CALC to myTime+deltaTclock
887      - fixed about 35 bugs in obcs_external_fields_load
888    
889    checkpoint55c_post
890    o obcs stuff
891      - new runtime flags useOBCSprescribe, useOBCSbalance
892      - re-arranged obcs_calc
893      - moved exf_getobcs to obcs_prescibe_read
894        obcs_prescibe_read is called after ORLANSKI stuff
895        and independent of it (executable can contain all).
896      - updated obcs_check
897      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
898        These may be necessary only if tangential velocities are
899        prescribed at OB, not sure, needs testing.
900    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
901      which simplifies the calls and passes the ifc check-bounds test
902    
903    checkpoint55b_post
904    o add a 2D scalar, Z location, exchange_2 routine.
905    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
906      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
907      affects advect_cs results (for the wrong reason): update output.txt
908    o use a more standard discretization for biharmonic viscosity ;
909     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
910      affects results of dome set-up: update output.txt
911    o fix gad_advection.F (CubedSphere part), back to version 1.23
912    o fix bug in mom_vi_del2uv.F (CubedSphere part).
913    
914    checkpoint55a_post
915    o merged code to
916      * prescribe/read time-dependent open boundaries
917        (works in conjunction with exf, cal)
918      * sponge layer code for open boundaries
919      * each boundary N/S/E/W now has its own CPP option
920        (healthy for the adjoint)
921    
922    checkpoint55
923    o up-to-date adjoint of previous breaks
924      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
925      - global_ocean_ebm: adjoint still needs fix (TLM ok)
926      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
927      - carbon: * remove tr1-related adjoint verification
928                * add ptracer as control variable
929    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
930      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
931    
932    checkpoint54f_post
933    o in verification/carbin/ remove experiment related to
934      ALLOW_PASSIVE_TRACER (array tr1 etc)
935      code_ad/ input_ad/ results_ad
936    
937    o add two new packages
938      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
939        + subject to optimization (memory)
940      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
941        + subject to reordering (many GOTOs in the original code)
942        + so far opps is called for every (i,j) point, and then operates in
943          the vertical; one may want to reorder the scheme in order operate in
944          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
945          fields)
946    o overhaul of IO so that we now have flags for MDSIO and/or MNC
947      - all verification tests compile and run with linux_ia32_g77
948      - defaults are compatible with current input files--nothing
949        should change if you were not previously using MNC
950      - MNC output has been added in numerous places (eg. timeave)
951        but there are still a few writes not yet do-able with MNC
952        (this is in progress)
953      - flags now allow for either/or/both use of MDSIO and MNC and
954        documentation will soon follow
955      - numerous small formatting cleanups for ProTeX
956    o add version info (via BUILD_INFO.h) to MNC and stdout
957    
958    checkpoint54e_post
959    o add two new packages
960      - pp81 (Packanowski and Philander, 1981), Richardson number and
961        stratification dependent mixing
962      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
963      - these scheme operate in a similar manner as KPP (without ghat, of
964        course), however there is only one diffusivity that is used for both
965        temperature and salinity (and passive tracers)ç
966    o add offline package
967    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
968      provided by Stephanie Dutkiewicz
969    o genmake2: add ability to search for C compilers and cleanup test output
970      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
971    
972    checkpoint54d_post
973    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
974    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
975      leading to additional shift by 5 days each year of integration
976       (i.e. leading to considerable offset over the years)
977    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
978    o start with no AB and no initial filtering (staggerTimeStep):
979      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
980    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
981      (external loading & cpl import/export stay in forward_step.F)
982    o update coupling interface to work with new staggerTimeStep
983    o change MDSIO ptracers_pickup.
984    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
985    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
986    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
987    
988    checkpoint54c_post
989    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
990      this affects (truncation error) output.txt of test-exp:
991       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
992    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
993    o change Qnet to always be the net heat flux, (+upward).
994      affects (truncation error) output of natl_box exp.: updated
995    o define the max number of passive tracers in PTRACERS_SIZE.h
996    o start to test mnc routinely in exp0
997    o add sea-ice loading (sIceLoad) as a new forcing field.
998    
999    checkpoint54b_post
1000    o add testreport "-j JOBS" option for parallel builds (tested and pretty
1001       impressive on Altix and Opteron systems)
1002    o diagnostics can now write NetCDF files through the mnc package
1003    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
1004    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
1005    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
1006      affects (truncation error) output of lab_sea & natl_box exp.: updated
1007    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
1008    
1009    checkpoint54a_post
1010    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
1011    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
1012    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
1013    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
1014      + internal_wave (shift in writing cg2d_ini_res)
1015    checkpoint54a_pre
1016    
1017    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
1018      - modified verification/lab_sea and natl_box_adjoint accordingly
1019    
1020    checkpoint54
1021    checkpoint53g_post
1022    o prepare splitting of thermodynamics: store convect.counter in common block
1023    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
1024      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
1025    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
1026    o new parameter "nShapS": allow to treat differently S from T (nShapT)
1027    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
1028    o restore adjointability
1029    
1030    checkpoint53f_post
1031    o modifications that affect AIM experiment results (update output.txt):
1032      - no advection of S at top interface Nr (pkg/generic_advdiff)
1033      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
1034    o AIM pkg:
1035      - include stability function into surf.Flux derivative relative to Tsurf
1036      - calculate clear-sky radiation & surface temp. change (for diagnostics)
1037    
1038    checkpoint53e_post
1039    o merged cylindrical coord configuration
1040    o added rotating_tank experiment
1041    checkpoint53e_pre
1042    
1043    checkpoint53d_post
1044    o faulks upgraded: re-generate output.txt that have changed:
1045       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
1046    o Added Bryan and Lewis, 1979, vertical diffusivity profile
1047    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
1048    o added Sadourny discretization of Coriolis
1049      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
1050      - re-enabled use of omega3 (useAbsVorticity)
1051    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
1052      vector-invariant equations
1053      - note: does *NOT* yet use same variable visc. for no-slip BC's.
1054    o recoded the lateral boundary conditions for non-hydrostatic w, this time
1055      hopefully without new bugs
1056      - still to do: biharmonic friction for non-hydrostatic w
1057    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
1058    o regenerated output for global_ocean_ebm (using -ieee)
1059    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
1060      of mom_common/
1061      - simple re-arrangement of instructions within computing loop
1062    checkpoint53d_pre
1063    
1064    checkpoint53c_post
1065    o new version of coupler for AIM+thSIce and Ocean models
1066     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
1067     - land: change Evaporation of snow
1068     - aim with thSIce: fix bug in snow-precip.
1069    o changes to calc_gw.F
1070     - bug fix for w^2 term near the bottom boundary
1071     - (hopefully) improve the lateral slip boundary condtions for use with
1072        partial/looped cells
1073      - because the bug fix changes two verification experiments anyway (exp5
1074        and plume on slope), change the lateral boundary condition from half slip
1075        to the value of no_slip_sides
1076    o ebm package wasnt quite up to the parallel task. Fixed that.
1077    o Adjoint of EBM package + verification
1078      * TLM OK
1079      * ADM not sufficient accuracy yet (needs further testing)
1080    
1081    checkpoint53b_post
1082    o Commiting new energy balance model to repository
1083      * package is pkg/ebm
1084      * verif. is verification/global_ocean_ebm
1085      * references are in ebm_driver.F
1086    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1087    C        Global thermohaline circulation. Part I:
1088    C        Sensitivity to atmospheric moisture transport.
1089    C        J. Climate 12(1), 71-82
1090    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1091    C        Global thermohaline circulation. Part II:
1092    C        Sensitivity with interactive transport.
1093    C        J. Climate 12(1), 83-91
1094    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
1095    C        Destabilization of the thermohaline circulation
1096    C        by atmospheric eddy transports.
1097    C        J. Climate 7(12), 1870-1882
1098    o Will need long integration testing.
1099    checkpoint53b_pre
1100    
1101    o created pkg/mom_common in preparation for variable viscosity code
1102    o renamed and split ini_mnc_io
1103    o pkg/land: only liquid water can diffuse or run-off
1104    o AIM using land: soil wetness availability account for snow
1105    o added printMapIncludesZeros to EEPARMS namelist
1106    
1107    checkpoint53a_post
1108    o restore TAMC compatiility for exf_constants.h
1109      (no usage of _d in .h)
1110    o Additional storing in KPP in an attempt to fix
1111      TAMC problem with adjoint of KPP code.
1112      (no success...)
1113      Identical code works fine with TAF.
1114    o Fixed verification/natl_box_adjoint experiments.
1115      Initial conditions for Experiments 4 and 5 are now
1116      set to "SEAICE_initialHEFF=0", which is more reasonable,
1117      and hence gives results closer to that of Experiment 2.
1118      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
1119    
1120    checkpoint53
1121    o stable checkpoint with up to date adjoint
1122      TLM tests only run for 1st grdchk at the moment. Its unclear if
1123      this is a code problem or a problem with resetting code for g_
1124      variables that is being autogenerated wrong.
1125      Otherwise:
1126       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
1127       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
1128         are both still in chaos following their security messes.
1129    
1130    checkpoint52n_post
1131    o various build (mostly genmake2) changes including:
1132      - ability to build/run more easily within Cygwin and MacOS X
1133      - more complicated Makefiles with a stronger dependence on Gnu Make
1134    o pkg/seaice modifications
1135      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
1136        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
1137        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
1138      - changed proxy for geostrophic velocity and updated
1139        verification/lab_sea/results/* accordingly
1140      - removed ADI dynamic solver from pkg/seaice
1141      - replaced all occurrences of 1/CSTICE or 1/CSUICE
1142        they caused a segmentation fault under certain circumstances
1143      - removed unused field WATR
1144    o bug fix in exf-package:
1145      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
1146         now reflect that.
1147    o small fixes in the cal-package:
1148      - set reference date to first of January for the 'model'-calendar
1149      - failing of cal_CheckDate in cal_FullDate now actually results in a
1150        warning
1151    o small modifications in exf-package to increase flexibility:
1152      - change climtempfreeze from a constant to a runtime parameter that
1153        is specified in data.exf_clim (default = -1.9)
1154      - introduce runtime parameter windstressmax (default = 2.0) that is
1155        specified in data.exf
1156    o fix in pkg/thsice:
1157      - update Evap (Tsf changes) to be consistent with Latent heat flux
1158      - maintain snow precipitation unchanged (even if Tsf >=0).
1159     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
1160    
1161    checkpoint52m_post
1162    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
1163      this does not change any of the results, because myIter=0 in swfrac always
1164      lead to jwtype=2 (the default anyway), but the call makes little sense
1165      as a default
1166    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
1167    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
1168      atmospheric model (AIM) to use it ; add a "slab ocean" component.
1169    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
1170    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
1171    o extending useSingleCpuIO option to work with new exch2 I/O format
1172      - old-style, missing-tile I/O is still accessible by defining CPP
1173        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
1174    o monitor package can write to NetCDF files and/or STDOUT
1175    o fix re-definition bug in MNC_GRID_INIT_ALL()
1176    o doc/api_reference added
1177      - a framework for building an API Reference Manual using all
1178        the "protex" comments embedded in the code
1179      - see pkg/generic_advdiff, pkg/mnc for examples
1180    o MNC:
1181      - make myThid the last argument for all subroutines
1182      - new default for the grid files: NO halos
1183      - add useMNC and other run-time flags
1184      - separate per-file-group handling of the unlimited dimension
1185      - early initialization of MNC w/ flags read at the eeboot stage
1186        and lookup tables set in initialize_fixed
1187      - write all MNC output to a freshly-created directory
1188    o thermodynamics sea-ice (thsice) is now tested with testreport.
1189    o test exp. advect_cs: use the standard cs32 grid ; update output.
1190    o Added functionality to grdchk:
1191      pick global i,j,k position (or nearest wet) where to perform check.
1192    
1193    checkpoint52l_post
1194    o new land formulation:
1195      a) use ground enthalpy as prognostic variable to ensure exact
1196         energy conservation.
1197      b) account for water temperature and for latent heat of freezing
1198         in all processes (rain, run-off, ground storage)
1199      c) compute surface and ground temperature implicitly.
1200    o aim_v23 modification for new land model:
1201      a) Treat separately land / ocean / sea-ice surface fluxes
1202         to allow implicit computation of land & sea-ice surface temp.
1203      b) add snow precipitation.
1204    checkpoint52l_pre
1205    
1206    o fix problem (when 1 tile is empty) in min/max monitor.
1207    o fix bug in timeAve (u,vZetatave in common block)
1208    o no restoring terms under ice for pkg/seaice
1209    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
1210    o bug fix for pkg/seaice pickups
1211    o change MNC call locations and add coordinate attributes
1212    o mask vorticity at the corner ; affects global_ocean.cs output
1213    o fix ini_curvilinear_grid ; test CS experiments with mpi
1214    o aim.5l_cs: modify sea-ice fraction input file ; update output
1215    o exf: Adding simple range check routine for exf fields after read
1216    
1217    checkpoint52k_post
1218    o removed top-level directory "diags"
1219      - we migrated these functions to pkg/timeave a long time ago
1220    o fixed bug introduced in pkg/monitor
1221    o accuracy ctrlprec = 32 insuffient for gradient checks using
1222      averaged fields (I/O via cost_averages)
1223      -> use ctrl.h in active_file*.F to control I/O precision.
1224    o paramter list of CALL ADTHE_MAIN_LOOP
1225    o added initial do_the_model_io to ecco
1226    o set all ...Freq to zero after cost_final
1227      taveFreq, dumpFreq, pChkptFreq
1228    o MAIN and ECCO differentiability restored
1229    
1230    checkpoint52j_post
1231    o fix nchklev in tamc.h for global_ocean...
1232    o Bringing flow and store directives up-to-date
1233    o Really weird thing!
1234      call do_the_model_io from the_main_loop with parameters
1235      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
1236      TAF places a faulty re-call of initialise_varia
1237      after cost_final call which should not be there!
1238    checkpoint52j_pre
1239    
1240    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
1241      error messages
1242    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
1243    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
1244      debug output
1245    o modfied mdsio_writefield.F to handle non-global files under exch2
1246    o update AIM Cubed-Sphere exp (aim.5l_cs):
1247      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
1248    o update AIM Equatorial Channel exp:
1249      use standard aim_v23 pkg and change the SST fields to be more realistic.
1250    o globalFile now works with exch2
1251    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
1252      mon_vort3.F to make exch2 friendly with >1 tile per cube face
1253    o limit timeave output for hi-res integrations
1254    
1255    checkpoint52i_post
1256    o removed CPP_EEOPTIONS.h from verification/*/code
1257    o updated the tiling for global_ocean_pressure
1258    checkpoint52i_pre
1259    
1260    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
1261      the old pkg/aim).
1262    
1263    checkpoint52h_pre
1264    o shortened offending lines in exch2_send_rx?.template
1265    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
1266    o genmake2: add build & execute test for NetCDF code
1267    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
1268      old grid files, moved CPP_EEMACROS.h to pkg/exch2
1269    o added useSingleCPUIO flag to monitor.F and mon_out.F
1270    o added temporary hack for sea-ice dynamics on the cube:
1271      metric terms are ignored and it is assumed that
1272      there is no sea-ice on cube faces 1, 2, 4, and 5.
1273    
1274    checkpoint52f_post
1275    o added exch2 cube routines to pkg/exch2
1276    o modified hs94.cs-32x32x5 to use it
1277    o added new grid files to hs94.cs-32x32x5
1278    checkpoint52f_pre
1279    
1280    checkpoint52e_post
1281    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
1282      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
1283    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
1284      to work with implicit vertical advection and AB ;
1285    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
1286    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
1287     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
1288    checkpoint52e_pre
1289    
1290    o fix bug in impldiff when Nr=1 or Nr=2.
1291    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
1292    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
1293    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
1294      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
1295    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
1296    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
1297    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
1298    
1299    checkpoint52d_post
1300    o re-tiled many expts to allow comparison in multi-processor mode
1301      - updated output accordingly
1302      - changed hs94.128x64x5 to use intial T from file rather than use the
1303        random number generator
1304    o add infrastructure in model routines for fizhi and gridalt packages
1305    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
1306    o changes to permit hi-res, cubed-sphere, configuration
1307      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
1308      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
1309      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
1310        of surface winds for the cube
1311      (A verification experiment, based on global_ocean.cs32x15, but with
1312       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
1313       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
1314       complete with example surface forcing files and matlab scripts to look
1315       at the output and compare it with that of global_ocean.cs32x15.)
1316    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
1317       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
1318       to conform to the common rule.
1319    o check-in the first version of the coupler + interfaces for multi-components
1320       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
1321       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
1322       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
1323       - ocean and atmos. share the same horizontal grid (no interpolation).
1324       - exchanges between component and coupler is done in forward_step
1325    o new verification experiment, cpl_aim+ocn:
1326       coupled ocean - AIM atmosphere on cs32 grid.
1327    
1328    checkpoint52d_pre
1329    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
1330    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
1331    
1332    checkpoint52c_post
1333    o Fixing OPTIONS files for use of exf:
1334      - ALLOW_ECCO not needed
1335      - ECCO_CPPOPTIONS.h should not be included from
1336        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
1337        as has been the case in the past
1338      - All cal/exf related options are currently set in
1339        single header file. Should remain so until we
1340        agree on a consistent new policy.
1341    o Removed all CPP options for cal package.
1342      cal has no more CPP options.
1343    o modified STOREs in GAD_ADVECTION
1344    o corrected key comp. for passkey
1345    
1346    checkpoint52b_post
1347    o new version: "thsice" of thermodynamic sea-ice pkg:
1348     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
1349     - modify fluxes but do not change theta directly;
1350     - light cleaning of bulk_force pkg (still needed with thsice).
1351     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
1352       + output_thsice.txt to test thsice & bulk_force pkgs.
1353    o put back grid & coriolis monitor output.
1354    checkpoint52b_pre
1355    
1356    o call "do_the_model_io" at the beginning (=> dump initial state)
1357    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
1358    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
1359      (need info on NUMBER_OF_PTRACERS)
1360    o missing PTRACERS headers in some routines
1361    o default tamc.h in pkg/autodiff supposed to crash
1362      to ensure proper customization
1363    
1364    checkpoint52a_post
1365    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
1366      - moved surfaceTendencyTice from pkg/seaice to main code
1367      - subroutine FREEZE_SURFACE now limits only surface temperature
1368        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
1369        => new output.txt for global_ocean.cs32x15 & global_with_exf
1370      - keep the old version of FREEZE for backward compatibility;
1371        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
1372      - corresponding modifs for TAF directives
1373    o added surface flux output variables to TIMEAVE_STATVARS
1374    o time-averaged output for pkg/ptracers
1375    o fix problem with ECCO-related divided adjoint
1376      snapshot file was missing some ad-variables,
1377      but no warning issued by TAF
1378    
1379    checkpoint52a_pre
1380    o some bug fixes for #undef REAL4_IS_SLOW
1381    
1382    checkpoint52 = ecco_c52_e35
1383    o after testing adjoints of checkpoint51u_post
1384    
1385    checkpoint51u_post
1386    o this is the post-merge tag of the ecco-branch
1387      (needs another clean checkout and re-testing)
1388    o various natl_box_adjoint configs and results
1389      but no input fields
1390    o obcs adjoint not yet merged!
1391    o adding ECCO global 1x1 and 2x2 degree configs
1392    o updated/extended some store directives for seaice
1393    o pkg/ecco now containes ecco-specific part of cost function
1394    o top level routines the_main_loop, forward_step
1395      supersede those in model/src/
1396      previous input data.cost now in data.ecco
1397      (new namelist ecco_cost_nml)
1398    o in ctrl/ cleaned some cross-dependencies and updated CPP options
1399    
1400    checkpoint51t_post
1401    o this is the pre-merge tag of the ecco-branch
1402    
1403    checkpoint51s_post
1404    o cleanup: removed various obsolete #define-s
1405    o pkg/grdchk
1406      - renamed 'ph-grd 3' to 'grad-res'
1407      - merged from ecco-branch
1408        (remaining bug fixes for obcs gradient checks)
1409      - additional high-precision output for testreport
1410        (grep for 'precision_grdchk_result')
1411    
1412    checkpoint51r_post
1413    o cleaned up or removed CPP_OPTIONS.h files
1414    o updated results for some of the tests to reflect the new
1415      optfiles (-ieee: -O0 instead of -O3)
1416    
1417    checkpoint51q_post
1418    o cd_code:
1419      - moved cd_scheme.F -> cd_code_scheme.F
1420      - separate read_checkpoint from cd_code_ini_vars.F
1421      - separated cd_code part from write_checkpoint
1422      - updated AD_SOURCE, generated .flow
1423      - added CD_CODE_VARS.h to the_main_loop
1424      - Moving cd_code specific store dir.s to pkg/cd_code
1425    o ctrl package totally restructured
1426      - pack/unpack now optional and decoupled from
1427        xx_/adxx_ I/O
1428      - ctrl_pack/unpack cleaned
1429        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
1430      - confined inclusion of AD_CONFIG.h to where necessary.
1431    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
1432    
1433    checkpoint51p_post
1434    o create initial cd_code package
1435      - WARNING: the initialization of fields within packages
1436        is broken because INI_FIELDS (where READ_CHECKPOINT is
1437        called) is called *before* PACKAGES_INIT_VARIABLES.
1438        This seems to be backwards since
1439        1) its important to initially zero the entire field including
1440           the "halo" region
1441        2) zeroing needs to be done *before* reading pickup info
1442           and the pickup call might or might not happen in any
1443           particular run
1444      - this needs an overhaul for R2
1445    o cleanup verification/*/code/GMREDI_OPTIONS.h
1446    o cleanup testreport
1447    
1448    checkpoint51o_post
1449    o bringing AD-related verif's up to date with genmake2
1450      - carbon/
1451      - global_ocean.90x40x15/
1452      - hs.94.1x64x5/
1453      - (front_relax/ )
1454    o (more) consistent directory structure for AD-related verif.'s
1455    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
1456    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
1457    o bug fix in find_alpha.F for MDJWF:
1458      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
1459        change rho -> rho-rhoConst
1460      - replace call find_rho to find_rhonum
1461    o initialisation of rFlx extended to full array (required by TAF)
1462      and shifted to thermodynamics
1463    o removed PTRACERS.h in ptracers routine
1464    o added surfacetendencyPtr to S/R parameter list pracers_forcing
1465    o Correcting initialisations for fVerU, fVerV.
1466    o helping TAF to recognize dependency on kUp for
1467      fVerU, fVerV
1468    o Replacing delZ by delR in pkg/ctrl/
1469    checkpoint51o_pre
1470    
1471    o undid all of cp51 pending some cleanups and discussion
1472    o added the [#include "AD_CONFIG.h"] statement to all files that need
1473       it for adjoint/tl #defines
1474     o re-worked the build logic in genmake2 to support AD_CONFIG.h
1475     o removed tools/genmake since it no longer works
1476    
1477    checkpoint51n_post
1478    o modifications to make FREEZE flux visible to pkg/kpp
1479      - moved surfaceTendencyTice from pkg/seaice to main code
1480      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
1481      - subroutine FREEZE now limits only surface temperature
1482        (this means new output.txt for global_ocean.90x40x15,
1483         global_ocean.cs32x15, and global_with_exf)
1484    o added surface flux output variables to TIMEAVE_STATVARS
1485    
1486    checkpoint51n_pre
1487    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
1488    o added [#include "AD_CONFIG.h"] to all files that use the following
1489      defines:
1490      - ALLOW_ADJOINT_RUN
1491      - ALLOW_TANGENTLINEAR_RUN
1492      - ALLOW_ECCO_OPTIMIZATION
1493    
1494    checkpoint51m_post
1495    o incorporating changes to get TAMC/TAF working in genmake2
1496      - added new TAMC/TAF targets to the Makefile
1497      - various cleanups related to package handling
1498      - these changes should have no impact on the forward model
1499    
1500    checkpoint51l_post
1501    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
1502     - faster algorithm for cal_addtime.F
1503     - higher precision arithmetic, where needed
1504     - pkg/exf *startdate variables changed from calendar date to
1505       model integration time
1506    
1507    checkpoint51l_pre
1508    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
1509    o enable to apply restoring on S & T only in a latitude band.
1510    o update output (external_forcing_surf modif. change truncation errors)
1511       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
1512    
1513    checkpoint51k_post
1514    o change default to: useNHMTerms=.FALSE.
1515     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
1516       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
1517     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
1518        exp1, ideal_2D_oce
1519     - change data file of oceanic exp (leave the results unchanged for now)
1520       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
1521    o set gravitySign automatically according to the vertical coordinate used
1522      (and change sign: back to "logical" value: +1 when R increases downward)
1523    o added an include barrier to the default CPP_OPTIONS.h and
1524      removed the #include "PACKAGES_CONFIG.h" from it
1525    o fix a bug in mom_fluxform (from chk51j_post)
1526    
1527    checkpoint51j_post
1528    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
1529    o adjusted some flow directives (dynamics, thermodynamics)
1530    o added cubed-sphere case to test cost function
1531    o heckpoint_lev?_directives.h now include
1532      pkg-specific directives, whenever those are enabled.
1533    o Moving pkg-specific flow directives to corresponding pkg
1534      Moving pkg-specific differentiation list to corresponding pkg
1535      Moving pkg-specific checkpoint-lev storing to corresponding pkg
1536      ---> conventions are
1537           - pkg_ad.flow
1538           - pkg_ad_diff.list
1539           - pkg_ad_check_lev?_dir.h
1540    
1541    checkpoint51i_post
1542    o merge of the branch-genmake2
1543      - knowingly breaks the older genmake
1544      - automatic generation of all ALLOW_${PKG_NAME} defines
1545      - new testreport supersedes older testscript
1546    o large number of package inclusion and header cleanups
1547    checkpoint51i_pre
1548    
1549    o new output for adjoin of global ocean vector invariant
1550    o fix for checkpoint of thermodynamic seaice and bulk_force
1551    o Steph gchem various cleanups
1552    
1553    checkpoint 51h_pre
1554    o fixed some single quotes
1555    o modify gchem pkg to be more versatile
1556    o modifications to clean up dic pkg
1557    o add pkg/cfc
1558    
1559    checkpoint51g_post
1560    o provide links for ARPACK and ADM*TLM
1561    o start removing verification/vero/
1562    o update AD-related stuff
1563      (in particular some IF-statements in model/src/ routines)
1564    o adding to verification/global_ocean.90x40x15/ adjoint of
1565      vector invariant setup
1566    
1567    checkpoint51f_post
1568    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
1569    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
1570      of tracer Green's fucntions for ocean inversion project.
1571    
1572    checkpoint51f_pre
1573    o Added on-the-fly spatial interpolation capability
1574        "USE_EXF_INTERPOLATION" to pkg/exf.
1575      - This is a temporary Cartesian-grid hack until
1576        the super-duper ESMF coupler becomes available.
1577      - See verification/global_with_exf/README for usage example.
1578      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
1579        flags and modified pkg/seaice accordingly.
1580    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
1581        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
1582        non-local transport term.
1583    
1584    checkpoint51e_post
1585    o pkg/mom_vecinv:
1586      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
1587      - add time-ave diagnostic of vorticity advection.
1588    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
1589    o atmospheric geopotential: - include water vapor effect;
1590                                - use p^kappa in p* scaling.
1591    o land pkg: read initial state from files.
1592    o AIM : add stratospheric drag in the upper level
1593    
1594    checkpoint51d_post
1595    o change function ILNBLNK (=> last non-blank char.) to return zero
1596      (instead of the string length) when the string. char is empty
1597    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
1598    o modif's to restore TAMC compatibility
1599      - avoid "_d" constructs in PARAMETER declarations
1600      - avoid interrupting lines by comment lines
1601    o Use cluster local disks for purely local I/O
1602      vs. globally visible disks needed for ctrl stuff
1603      (merged from ecco-branch)
1604      - new active_file_loc... and mdsio_..._loc routines
1605      - affected packages: autodiff, ctrl, grdchk, mdsio
1606    
1607    checkpoint51c_post
1608    o introducing integer flag debugLevel
1609      - debLevZero: suppress all output
1610      - debLevA: standard
1611      - debLevB: equivalent to current debugMode=.TRUE.
1612    o introducing pathname variable mdsioLocalDir for mdsio
1613      that can be specified at runtime
1614      (relevant for cluster I/O to local disk)
1615    `
1616    >>>checkpoint51b_post
1617    adjoint of ptracers
1618    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
1619    o extended state in checkpoint_lev?, etc.
1620    o alternative ctrl/cost with tr1 or ptracer
1621    o new comlev1_bibj_ptracers
1622    o new ptracers.flow
1623    o made ptracers_forcing same as external_forcing_s
1624    o added verification for adjoint with ptracers
1625      - adm. grdchk fail so far
1626      - tlm. grdchk OK
1627      - checked tapelev/comlev recomputations: OK
1628    <<<checkpoint51b_pre
1629    
1630    checkpoint51a_post
1631    o added code for biogeochemistry package
1632      - new pkgs: dic, gchem
1633      - new subroutine in ptracers
1634    o modify code for biogeo packages
1635      - in model/src and pkg/ptracers
1636    
1637    checkpoint51
1638    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
1639      - autodiff, ctrl, exf, grdchk, seaice
1640      kept separate packages
1641      - cost, ecco, obcs
1642    o updating verification/internal_wave, verification/lab_sea
1643      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
1644    
1645    checkpoint50i_post
1646    o Preparing next differentiable checkpoint and sync
1647      of MAIN vs. ecco-branch
1648      - 1st step: this one is differentiable
1649      - 2nd step: next(! not this) checkpoint will have updated packages
1650                  from ecco-branch)
1651    
1652    checkpoint50h_post
1653    o new package "land": provide surface BC for AIM.
1654    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
1655    o AIM: use true log-P extrapolation for near surface temp (= as in
1656        F.Molteni paper) ; update aim.5l_cs output.
1657    o New variable in PARM03 for more flexible pickups
1658    o somewhat cleaned package initialisation sequence for
1659      ctrl/ cost/ ecco/ in packages_... routines
1660    
1661    checkpoint50g_post
1662    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
1663      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
1664      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
1665        made the default because of faster convergence than ADI
1666    
1667    checkpoint50f_post
1668    o exf totally restructured
1669      - replaced all exf_set_ routines by one generic exf_set_gen.F
1670        and made sure it's still differentiable
1671      - split exf_getffields.F into new exf_bulkformulae.F
1672      - exf_inscal_/exf_outscal_ suffixes consistent with field names
1673      - updated adjoint/makefile and relevant verif. accordingly
1674    
1675    checkpoint50f_pre
1676     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
1677          + change Evap over land. (update aim.5l_cs output)
1678     o added missing .cvsignores and made uniform across expts
1679     o changed configuration of tidal_basin_2d expt
1680     o added pkg/debug functions for tracing code in fatal crashes
1681     o tidied pkg/monitor to use MONITOR_OPTIONS.h
1682     o new fn in pkg/monitor to stop model if solution grows too big
1683     o removed lots of single quotes from comments
1684    
1685    checkpoint50e_post
1686    o make KPP work with PTRACERS
1687     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
1688       nearly a copy of kpp_transport_s
1689     - there is no analogue to SurfaceTendencyS, so I have to use
1690       gPtr(of the surface layer) instead
1691    o add a new platform SunFire+mpi (SunFire 15000) to genmake
1692    checkpoint50e_pre
1693    
1694    checkpoint50d_post
1695    o change kpp output from multiple-record state files to single-record state
1696      files analogous to write_state.F
1697    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
1698      analogous to the cg2d-related output.
1699    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
1700      so that writing to internal file fn (with length 512) fails.
1701    checkpoint50d_pre
1702    
1703    checkpoint50c_post
1704    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
1705    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
1706    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
1707    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
1708    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
1709    
1710    checkpoint50c_pre
1711    Merging from release1_p13:
1712    o bug fix for pkg/seaice dynamic solver
1713    o Added SEAICE_initialHEFF to pkg/seaice
1714    
1715    checkpoint50b_post
1716    o store u*,v* in gU,V instead of in guNm1,gvNm1
1717    o in order to put the momForcing out of the Adams-Bashforth:
1718      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
1719      to timestep.F
1720    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
1721    o re-generate output for highly sensitive test-exp:
1722       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
1723    
1724    checkpoint50b_pre
1725    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
1726    o corrected CPP option mismatch in exf_Bulk... functions for case
1727      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
1728    
1729    checkpoint50a_post
1730    o Bug fix for merging between c50 and KPP.
1731      ikey was passed from thermodynamics to kpp_calc via
1732      common block rather than being recomputed in kpp_calc,
1733      in contradiction with new key itdkey.
1734      New key ikppkey created, and tamc.h headers updated.
1735    
1736    checkpoint50
1737    - 2nd step of merge with ecco-branch:
1738      merge changes in ecco-branch back into main trunk
1739    - bug fix in find_alpha
1740    - more storing in gmredi_calc_tensor.F, kpp_routines.F
1741    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
1742    - merged some sliced AD support routines
1743    
1744    checkpoint49
1745    merged from ecco-branch:
1746    o exf:
1747      - Enable initialisation of forcing fields to constant
1748        (runtime) values.
1749      - in exf_getffields.F
1750        Reduce i-/j-loop to interior domain, discarding overlaps.
1751        That also fixes wrong TAF-key computations for key_1, key_2
1752        with bulf formulae.
1753      - exf_init.F modify #ifdef for exf_init_evap
1754      - exf_getffieldrec.F, ctrl_getrec.F
1755        The following INT-usages are not safe:
1756          fldsecs  = int(fldsecs/fldperiod)*fldperiod
1757          fldcount = int(fldsecs/fldperiod) + 1
1758        and were modified.
1759    o autodiff: checkpoint_lev...
1760      - updated storing for bulk formulae (some arrays were missing)
1761      - added state for seaice package
1762      - synchronized with main branch
1763    o DIVA:
1764      Modif.s in
1765      - the_main_loop.F
1766      - the_model_main.F
1767      and added cost_final_restore.F cost_final_store.F
1768      o With these changes, it is possible to fully separate
1769        the first forward run to compute the cost function (mdthe_main_loop)
1770        and adjoint runs over individual DIVA intervals (adthe_main_loop)
1771        into separate model executions.
1772        This enables better tuning of DIVA to given queue sizes.
1773      o Loss of cost function value in consecutive DIVA runs is
1774        fixed by storing to 'costfinal' file.
1775      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
1776        beginning/end of adjoint integration is accounted for.
1777      The current changes apply to TAF-1.4.26.
1778      TAF has one remaining bug, requiring one manual change
1779      (see MITgcm manual).
1780    o cal: synchronized between MAIN and ecco-branch
1781    
1782    checkpoint48i_post
1783    o Changes to restore differentiability of code w.r.t. previous tag
1784      (mostly adding new routines to make list and replacing
1785      pressure by totPhiHyd).
1786    o Updated and merged grdchk package
1787      - has both ADM and TLM checks
1788      - works for single- and multi-proc.
1789      - output cleaned
1790      - worked successfully for parallel DIVA
1791    o genmake:
1792      - Adding -platform=SP4
1793      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
1794    o Modif. for DIVA:
1795      ctrl_unpack should not be called in intermediate DIVA interval.
1796      (similar thing would apply for active files such as
1797      tbar, sbar, psbar, which should not be reinitialised;
1798      only relevant for ecco-branch)
1799    
1800    checkpoint48h_post
1801    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
1802    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
1803    o Added SEAICE_initialHEFF to pkg/seaice
1804    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
1805    
1806    checkpoint48g_post
1807    --- EOS:
1808    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
1809      store total Potential in totPhyHyd for diagnostics & EOS.
1810    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
1811    --- Pressure/geopotential gradient:
1812    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
1813    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
1814      ( changes results of global_ocean_pressure )
1815    o NLFS + z-coord.: add eta*Rho' contribution.
1816    o accurate phiHyd when using interface-W at the middle between 2 centers
1817     ( changes results of ideal_2D_oce )
1818    o includes r* 2nd term in potential gradient.
1819    
1820    checkpoint48f_post
1821    Merging from release1_p12:
1822    o Modifications for using pkg/exf with pkg/seaice
1823      - improved description of the various forcing configurations
1824      - added basic radiation bulk formulae to pkg/exf
1825      - units/sign fix for evap computation in exf_getffields.F
1826      - updated verification/global_with_exf/results/output.txt
1827    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
1828      (SBO) core products, including oceanic mass, center-of-mass,
1829      angular, and bottom pressure (see pkg/sbo/README.sbo).
1830    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
1831      to avoid negative values in shallow regions.
1832      - updated verification/natl_box/results/output.txt
1833      - updated verification/lab_sea/results/output.txt
1834    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
1835    o Added useSingleCpuIO option (see PARAMS.h).
1836    o Updated useSingleCpuIO option in mdsio_writefield.F to
1837      work with multi-field files, e.g., for single-file pickup.
1838    o pkg/seaice:
1839      - bug fix in growth.F: QNET for no shortwave case
1840      - added HeffFile for specifying initial sea-ice thickness
1841      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
1842    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
1843      kpp_transport_t.F, forward_step.F, and the_main_loop.F
1844    o pkg/seaice:
1845      - adjoint-friendly modifications
1846      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
1847    
1848    checkpoint48e_post
1849    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
1850    o dynamics: change definition of computational domain & adapt mom_fluxform
1851      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
1852    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
1853        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
1854        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
1855        global_ocean.90x40x15 global_with_exf global_ocean_pressure
1856        inverted_barometer solid-body.cs-32x32x1
1857      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
1858    
1859    checkpoint48d_post
1860    o in preparation for r*:
1861     a) use pre-computed gradient of hydrostatic potential:
1862        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
1863     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
1864        => affects results of glob_oce_pressure (different truncation error)  
1865      update output.txt of ideal_2D_oce & global_ocean_pressure
1866    
1867    checkpoint48d_pre
1868    o in preparation for r*:
1869      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
1870      pass the 2 comp. of the grad. as arguments to momentum S/R.
1871      but for the moment, only used if it does not change the results.
1872    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
1873    
1874    checkpoint48c_post
1875    Modifications in treatment of initial flux forcing controls
1876    to avoid extra storing of flux fields.
1877    
1878    checkpoint48c_pre
1879    o Added tidal_basin_2d experiment (currently 1D!)
1880    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
1881    
1882    checkpoint48b_post
1883    o r* coordinate added in #ifdef NONLIN_FRSURF block.
1884     (modification to pressure gradient not yet implemented)
1885    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
1886      (for U & V) that are used for vertical advection of momentum.
1887    
1888    checkpoint48a_post
1889    o In preparation for r*, use temp. array to compute vertical transport
1890       in flux-form momentum pkg. => change results of few test-exp.
1891      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
1892                        lab_sea, natl_box & plume_on_slope
1893    
1894    checkpoint48
1895    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
1896    
1897  checkpoint47j_post  checkpoint47j_post
1898  o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.  o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
1899  o moved adexch from forward_step to addummy_in_stepping  o moved adexch from forward_step to addummy_in_stepping

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