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revision 1.198 by edhill, Tue Oct 28 22:57:59 2003 UTC revision 1.630 by mlosch, Wed Mar 15 13:06:14 2006 UTC
# Line 1  Line 1 
1  $Header$  $Header$
2    $Name$
3    
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    o seaice:
8      - modify advection so that it works also on the C-grid
9      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
10        problem in multi-tile runs with C-grid
11      - remove velocity clipping from seaice_dynsolver with C-grid
12    
13    checkpoint58b_post
14    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
15      update output.txt of exp. aim.5l_cs.thSI
16    o various mnc cleanups and improvements:
17      + shrink lookup tables by factor of ~4
18      + better error reporting when running out of lookup space
19      + able to handle longer path/file names (up to 500 chars)
20    o adjoint:
21      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
22      - TBD: "hidden" mom_vecinv recomp. in dynamics
23    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
24     (allow to differentiate between forcing components using new integer flags:
25      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
26     and add new flag to put Dissipation tendency out of Adams-Bashforth.
27    o ecco
28      - enable trend removal from SSH anomaly obs.
29    o adjoint
30      - a fix for PmEpR when #undef EXACT_CONSERV
31      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
32      - try to fix "hidden" recomp. in forward_step for NLFS
33        (NLFS seems broken sometimes after I checked it in)
34    o seaice:
35     - add c-grid version of the dynamic solver:
36       + three new routines that are the c-grid substitute lsr, dynsolver
37         and ostres
38       + put a few fields that were local to dynsolver into global common
39         blocks, so that I can move the computation of stresses etc into
40         seaice_lsr (saves coding but may break the adjoint).
41     - replace more hardwired parameters by runtime parameters
42     - add ice masks that mask the rhs of the implicit solvers where there
43       is no ice (commented out in seaice_dynsolver, because i am not sure
44       if this works properly), eventually this should replace the clipping
45       of ice velocities in seaice_dynsolver to +/-40cm/s.
46    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
47      include it only where its needed
48    o move balancing of fluxes before the call of external_forcing_surf
49    o seaice:
50      - correct units of turning angles (now they are really in degrees)
51      - move computation of GWATX/Y out of main routine into dynsolver
52      - initialize GWATX/Y in seaice_init
53    o Apply mask on Fresh-Water flux (needed for SSH forcing).
54      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
55    o seaice: add runtime flags for turning angles (default to zero)
56    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
57      and trend from exf forcing and ctrl control adjustments
58    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
59      (since checkpoint57x_post)
60    o change the default rotation period to 86164.s = the Earth rotation
61    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
62      and based on a reference stratification. Tested within hs94.cs-32x32x5.
63    o seaice advection: add code for choosing between the default (2nd order
64      central differences) and multiDim advection schemes provided by
65      pkg/generic_advdiff
66    o seaice:
67      - removed all references to SEAICE_GRID.h fields from
68        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
69        (cubed-sphere configuration will change a little)
70      - grid computations in seaice_init are obsolete now.
71      - cleaned up code a little so that is easier to read (hopefully).
72      - added new (better?) discretizations of default advection and diffusion
73        (turn on with SEAICEuseFluxForm)
74      - replace 1 in 3d global fields by kSurface in growth.F
75      
76    checkpoint58a_post
77    o seaice:
78      - bug fix in advect.F
79    o shelfice:
80      - separate shelfice load anomaly from pload (breaks with time
81        dependent forcing), => introduce constant field shelficeLoadAnomaly.
82        Its default is 0., but it may be computed more cleverly from (unknown)
83        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
84        done offline. A good approximation of the pressure load anomaly is
85        necessary to avoid large initial adjustment processes underneath
86        deep-reaching shelfice.
87      - small fix in ISOMIP shelfice_thermodynamics
88      - add more sophisticated thermodynamics of Hellmer (1989), this is
89        now the default
90      - give a few constants more intuitive names
91    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
92      if bulk formulae are used in long integration (especially EmPmR). Turn
93      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
94      if balancePrintMean, the imbalance that is substracted is printed to
95      STDOUT.
96    o fix bug (typo) in obcs_apply_eta.F
97    o add a new package shelfice which enables us to model the circulation
98      underneath shelf-ice with draughts of hundreds of meters.
99     - works
100     - to do: + include improved thermodynamics
101              + check whether kSurfC (from model/inc/SURFACE.h) can be used
102                instead of new field kTopC
103              + can we use topoFile, Ro_surf and existing code in ini_depth.F
104                instead of new field R_shelfIce and new code in ini_depth.F
105                and ini_mask_etc.F?
106              + adjust vertical mixing schemes?
107    o seaice pkg:
108     - add a cpp-flag to include a simple formula for a salinity dependent
109       freezing point of sea water at the surface
110     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
111       meridional stresses are now different (and hopefully correct)
112    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
113       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
114       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
115    o pkg/diagnostics: add options and parameters for regional-statistics
116       diagnostics ; define regions by reading a region-mask from a file
117       (might add other options later)
118    o pkg/bulk_force:
119     - add option and parameters to use AIM surface-flux formulae.
120     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
121       others forcing fields (defined in PARM05, parameter file "data") are loaded
122       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
123     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
124     - use the right EXCH call for uwind,vwind (to work on CS-grid).
125     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
126       and parameters (note: calcWindStress replaces .NOT.readwindstress).
127     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
128    
129    checkpoint58
130    o add "--embed-source" option to genmake2 which, when the supporting
131      tools can be compiled (as determined by genmake2) will turn on the
132      embed_files package which then embeds the entire MITgcm source code
133      (*.[fFhc] + Makefile) used for the build within the executable
134      - requested by CNH but off by default
135      - adds a paltry <9MB to the mitgcmuv executable in most cases
136      - only writes the output when useEMBEDSRC in eedata is true
137    o clean up 3-dim. relaxation codes:
138      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
139      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
140      * Thanks to Tom Haine for testing!
141    
142    checkpoint57z_post
143    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
144      affects output (@ truncation level) of exp. plume_on_slope ; updated.
145    o fix the pickup behavior for obcs in combination with ptracers
146    o fix a bug in ptracers_external_fields_load
147    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
148      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
149    o transfered surface NH pressure to eta field (if exactConserv).
150    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
151         and update lab_sea output.txt file.
152    o completing 3-dim. relaxation code: additional term
153         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
154      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
155      * At compile time, in "EXF_OPTIONS.h" set
156          #define  ALLOW_CLIMTEMP_RELAXATION
157          #define  ALLOW_CLIMSALT_RELAXATION
158      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
159          tauThetaClimRelax3Dim = 15552000.0,
160          tauSaltClimRelax3Dim  = 15552000.0,
161      * 3 cases:
162          1) Use a constant-in-time 3-dim. field
163          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
164          3) Real-time relax. to time-evolving prescribed field
165    o Adding Laplacian-type smoothness constraint on
166      initial and boundary (forcing) controls (ic, bc)
167      * enable at compile-time via
168        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
169      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
170      * Absolute scale somewhat unclear so far
171      * no area weighting was included since no other cost term does so far
172    
173    checkpoint57y_post
174    First step for a NLFS adjoint
175    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
176    o new init. routines for calc_r_star, calc_surf_dr
177    o still need to deal with ini_masks_etc
178    o testreport seemed happy
179    checkpoint57y_pre
180    
181    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
182    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
183    o add new offset feature to offline pkg (plus minor cleanup)
184    o cfc fixes for final year of integration
185    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
186      be in GCHEM_OPTIONS).
187    
188    checkpoint57x_post
189    o fix testreport Pb in multiple test experiment.
190    o cleanup our namelist syntax in verification:
191      - make it more F95 standards compliant (some work still needed)
192      - allows the vast majority of our tests to work with gfortran
193    o Non-Hydrostatic:
194     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
195     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
196    o Allow to apply AB on T,S rather than on AB(gT,gS):
197     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
198     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
199       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
200     - need a "clever" read_pickup to restart from the other AB formulation
201    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
202    o remove some unused variables (reduces number of compiler warnings)
203    o adjoint
204      * Disable useVariableViscosity for adjoint for time being
205        (there are a number of extensive recomputations)
206      * Initialize certain variables needed for adjoint
207    
208    checkpoint57w_post
209    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
210                 fix the singleCpuIO RS version of MDSWRITEFIELD
211       and add a WARNING if using globalFiles=T with multi-processors.
212    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
213      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
214    o tracer advection scheme:
215      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
216       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
217       was not very convenient).
218      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
219       (further tests needed for the implicit DST & Flux-Limiter schemes).
220    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
221      and sRef for convenience, handy, when you want to initialize
222      ptracers in a large domain with a constant non-zero value. Also,
223      untangle ptracers_init.F a little.
224    
225    checkpoint57v_post
226    o change dome exp. to use variable viscosity in side-drag terms.
227    o remove all the files from the cfc_offline test since they are now
228      incorporated into tutorial_cfc_offline which has been producing
229      identical results for a few days of testing
230    o add new parameter: sideDragFactor to enable half-slip-side BC
231      and change side-drag S/R to use viscosity from mom_calc_visc
232      (can switch back by setting sideDragFactor=0.); affects results at
233      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
234       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
235    o vorticity & strain are now computed without masking, to account for
236      no-slip-side BC in variable viscosity calculation ; mask is applied
237      anyway later on, before computing advection/coriolis terms.
238    o modify exp4 to test new obcs support for reading from external files
239      and for passive tracers
240    o fix behavior of ptracers_monitor when monitor output is written to a
241      netcdf-file; still not independent of monitor.F (writes in the same
242      file).
243    o change default value of tRef (put a uniform, meaningful value for ocean
244      & atmos) and initialize sRef (was missing, as Martin mentioned).
245    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
246      to be proportional to enstrophy dissipation length.  Thus,
247       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
248      This is now consistent with Smagorinsky and with the manual.
249    
250    checkpoint57u_post
251    o OBCS and PTRACERS: add open boundary support for passive tracers
252      - either use homogenous (pseudo) v.Neumann conditions or prescribe
253        OB-values from file; this is not different from the way theta and salinity
254        are treated
255      - however, Orlanski-radiation conditions are not supported, and the model
256        will stop if you use pTracers and Orlanski at the same time.
257      - beefed up the rountine obcs_external_fields_load: now only those open
258        boundary values are overwritten with values from files for which there
259        are really files, otherwise the OB-fields remain untouched. This makes
260        it possible to use different OBs at different ends of the domain (as
261        with EXF)
262    o reduce number of exch calls in shap_filt (s2).
263    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
264      truncation level) 4/5 MLAdjust test results (11&12 digits match).
265    
266    checkpoint57t_post
267    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
268    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
269      same truncation, independent of the face number: affects affects several
270      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
271    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
272      note that biharmonic viscosity + no-slip was not tested in any experiment.
273    o fix bug in non-linear free-surf side-drag ; generate new output for
274      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
275    o make mnc honor the writeBinaryPrec flag for most kinds of output
276    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
277    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
278      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
279    o add brackets in multi-terms sum to get same truncation, independent of
280      the face number (manage to get exactly same value of gU,gV at the cs-edge)
281      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
282    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
283      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
284      a maximum grid-scale Reynolds number.  Also, changes all length calculations
285      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
286      Suggested values of viscosity parameters found in mom_calc_visc.
287      Many new viscosity diagnostics available.
288    
289    checkpoint57s_post
290    o Add clearing-house for viscosity calculations, mom_calc_visc and
291      correct numerous bugs in LeithD and Smagorinsky discretizations.  
292      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
293      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
294      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
295      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
296      The Strain-Tension form is now called with useStrainTensonVisc=.true.
297      ViscAhStrain and viscAhTension are now retired.
298    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
299    o In response to JMC's bug report, genmake2 now ignores any soft-links
300      that it finds in the *current* directory when searching for files.
301      Soft-links found in any other source directories will still work as
302      they did before.
303    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
304      a C routine to unlimit the stack size
305    o mnc-ify pkg/aim snapshot vars
306    o mnc-ify pkg/land as requested by Daniel
307    o various changes to mnc including:
308      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
309      - output can now be grouped so that all files within a group
310          change the ITER portion of their names in lock-step together
311      - can now read ("global") PER-FACE (in addition to PER-TILE) files
312          and works with both EXCH1 and EXCH2 (but needs more testing)
313      - writing works for all verification test cases w/ g77 on Linux
314    
315    checkpoint57r_post
316    o make MNC variable initialization happen earlier
317    o add diagnostics for (almost) each term of the momentum Eq.
318    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
319    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
320    o remove MINIMAL_TAVE_OUTPUT option ;
321      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
322    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
323      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
324    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
325    o add time-dependent SST, SSS control
326    o cost terms in ecco/ modularized (new cost_generic.F)
327    o cost_averages routines are modularized (new cost_averagesgeneric.F)
328    o new infrastructure for seaice model vs. obs misfits in seaice/
329      * driver from the_main_loop.F is seaice_cost_driver.F
330      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
331      * gradient check in Exp. 6a of natl_box_adjoint/
332    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
333      (see README file)
334    
335    checkpoint57q_post
336    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
337    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
338      - bug was reported by Jean-Michel and Ian Fenty
339    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
340      update exp. cpl_aim+ocn output.
341    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
342      Needed for high-res. runs with large global files
343      to be able to limit tapelev size
344    o Changed some tests for adjoint:
345      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
346      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
347      * global_ocean.90x40x15/ back to default 3-level checkpointing
348    o Modifications to enable scripted COMMON to MODULE conversion
349      * verification/OpenAD/code/ has necessary scripts and description;
350      * converts, compiles and runs successfully;
351    
352    checkpoint57p_post
353    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
354    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
355      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
356    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
357    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
358      (was already the case for dissipation with mom_vecinv,
359       and also the case for grad.PhiHyd when staggered-timeStep)
360      This will allow to put dissipation out-off the AB time-stepping.
361     Unfortunately, affects truncation error. Update output of exp. that "fails"
362      (cg2d matching number) and leave the others for later: front_relax(10),
363      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
364      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
365    
366    checkpoint57o_post
367    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
368      (2) its ready to be documented during the 20050801 DocFest
369    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
370      for ideal_2D_oce and lab_sea on linux_ia32_g77
371    o set to #undef CTRL_SET_OLD_MAXCVARS_30
372      in global1x1_tot/code_seaice_adj to access indices 32, 33
373      (worth another tag)
374    
375    checkpoint57n_post
376    o adding precip control xx_precip 32
377    o adding swflux control xx_swflux 33
378    o Replacing 10 forcing penalty cost routines by 1 generic.
379    o Implementing partitioning in time-mean and variable adjustment
380      for atmos. state.
381    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
382    o in natl_box_adjoint:
383      * updated exp 1 to 10
384        (but does not have time-mean vs. variable split results yet)
385    o updated global1x1/*_seaice_adj/
386      to incorporate latest changes
387    o enable useSingleCpuIO for mdsio vector routines
388      (applies in particular to tapelev I/O)
389    o removed inefficient K-loop in all active_file*control*.F
390    
391    checkpoint57m_post
392    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
393      and advect_cs (use EXCH-2 and standard cs-32 grid files).
394    o pkg/exch2: filling of face-corner halo regions is optional
395      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
396    
397    checkpoint57l_post
398     tag before updating tutorials (pre-release-2)
399    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
400       for output and interpolation of input fields onto model grid)
401    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
402       Affects results of exp. rotating_tank ; update output.txt.
403    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
404          and taking the square quantity and/or using a fraction-weight field.
405    o fix aim_diagnostics_init.F mate numbers.
406    o add mnc output capability to diagnostics/diagstat and update
407      our cvsignore files for the ACSII output generated
408    
409    checkpoint57k_post
410    o lab_sea now uses diagnostics package and provides a suite of
411      new EXF diagnostics output.
412    
413    checkpoint57j_post
414    o exf
415      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
416        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
417        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
418      * extended diagnostics output
419        - now includes all EXF variables
420        - hs, hl moved to common block
421        - separate S/R for diagnostics, called after ctrl vector is added
422        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
423        - EXFqnet contains true Qnet (i.e. includes qsw)
424      * updated verif. lab_sea, global_with_exf
425      * Rearranging hflux (exf_mapfields -> exf_getforcing)
426        to ensure that diagnostics sees a true EXFqnet
427    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
428    o diagnostics pkg: change pointers so that 1 diagnostic can be used
429      several times with different frequencies.
430    o mnc-ify the thsice package as requested by Daniel Enderton
431      - the monitor--MNC output needs work
432      - many attributes need to be added (most are currently blank)
433    o mnc-ify theaim_v23 package as requested by Daniel Enderton
434      - many attributes need to be added (most are currently blank)
435    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
436    o add Sadourny like discretization to the 4th.O vorticity advection scheme
437    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
438      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
439         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
440    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
441     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
442    
443    checkpoint57i_post
444    o Diagnostics package was changed: diagnostic allocation is now deactivated
445      by setting an empty file name in the namelist (used to be by setting 0 frequency)
446    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
447      add 1rst Order upwind vertical Shear.
448    o add a quick fix for A/B checkpointing in OFFLINE mode
449    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
450      end-run around the C/Fortran linking horror in eesup/src/timers.F
451    o added pkg/runclock: allows user to terminate run based on wall clock
452    o added non-hydrostatic scaling parameter: nh_am2
453    o pkg/my82: futile attempt to make results compiler-independent by adding
454      some "_d 0", etc. no effect.
455    o for mnc output, fill the 'T' coordinate var with myTime and create a
456      separate 'iter' variable for iteration count
457    o pkg/diagnostics:
458      add new capability: output of Global/Regional & per-level statistics ;
459      tested against monitor output (including land & thSIce) on various exp.
460    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
461    
462    checkpoint57h_done
463      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
464      data.diagnostics, data.gchem, data.ptracers) is done.
465    
466    o pkg/diagnostics: prepare for Global/Regional statistics.
467      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
468    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
469      and rename it: DIFFERENT_MULTIPLE
470    
471    checkpoint57h_post
472    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
473    o pkg/diagnostics: change output frequency, now in seconds (instead
474      of Nb of iterations). This requires to change data.diagnostics.
475    checkpoint57h_pre
476    
477    o in mnc, let the user create the output dir if both mnc_outdir_date
478      and mnc_outdir_num are false
479    o add fflags() to pkg/diagnostics which allows one to specify, on a
480      per-file basis, the file precision [default behavior is unchanged]
481    o added diagnostics to pkg/kpp, including computation of mixed layer
482      depth based on a temperature/density criterion
483    o updated verification/natl_box to test the new pkg/kpp diagnostics
484    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
485    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
486    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
487      not mnc -- this mistake was found by JMC and is now corrected
488    
489    checkpoint57g_post
490    o add Adams-Bashforth 3rd Order time stepping:
491      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
492      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
493    checkpoint57g_pre
494    
495    o make lambda[Theta,Salt]ClimRelax spatially varying
496      (default remains spatially uniform constant based on tau)
497    o added new control variables
498      * init. uVel, vVel, etanN
499      * lambda[Theta,Salt]ClimRelax
500    o separate masks used for ctrl_pack/unpack 'from write_grid' output
501      (suggested by G. Forget)
502    
503    checkpoint57f_post
504    o add parameter "baseTime" = model base time = time at iteration zero
505      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
506      account for baseTime shift
507    o move Coriolis arrays from PARAMS.h to GRID.h
508    checkpoint57f_pre
509    
510    o mnc-ifying the seaice package
511    o introduced an alternative length scale calculation for use in the limiting
512      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
513    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
514    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
515      as well as grad(vort3).  Made it compatible with both approximate form
516      for the cubed sphere and full form of these gradients.  Added flag
517      useFullLeith to select between approximate and full form.  
518    o add "d0" in getcon.F to reduce differences between compilers/platforms
519      update output.txt of exp. fizhi-gridalt-hs
520    o change port_rand funtion to allow to set the seed.
521    o fix obscure MNC bug involving conversion between reals and integers
522      - it caused no problems with certain (eg. gcc, ifc) compilers but the
523        new version is now more standards-compliant
524    o adjoint-related modifications
525      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
526      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
527      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
528    
529    checkpoint57e_post
530    o Adding eddy stress controls a la Ferreira et al.
531    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
532    
533    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
534      update output.txt of exp. fizhi-gridalt-hs
535    o add more "Z" dimensions and associated coordinate vars to MNC
536    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
537    o parameter calendarDumps: when set, approximate months (30-31 days) and years
538      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
539      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
540      months and years.  Requires pkg/cal.
541    o diagnostics: add pickup functionality
542      - off by default for backwards compatibility
543      - current version only uses MDSIO -- MNC will be added
544    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
545    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
546    
547    checkpoint57d_post
548    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
549    o modify verification/ideal_2D_oce so that it tests the creation of mnc
550      output from the diagnostics package
551    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
552    o make genmake2 more portable by using ".$FS" instead of ".f" for more
553      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
554    o add coordinate variables to the MNC output from the diagnostics package
555    o change MNC-flags default value: true when useMNC=TRUE
556    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
557      the ability (off by default) to read the grid information using MNC
558    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
559    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
560    o do snap-shot diagnostics at the middle of the time-interval (instead of
561      at the end).
562    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
563      new test for AIM with thSIce + slab-ocean
564    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
565    o move state variable diagnostics to the beginning of the time step ;
566      (note: still needs some work specially for snap-shot diagnostics)
567      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
568    
569    checkpoint57c_post
570    o Change testing option (-ieee) to get closer agreement between g77 & ifort
571    o generate new output.txt files on faulks with g77 & the new -ieee option
572    checkpoint57c_pre
573    
574    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
575      update output.txt of exp. global_ocean.90x40x15
576    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
577      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
578    o add saltFlux(+File) forcing capability with periodicExternalForcing
579    o allow to use pkg diagnostics for GM-Redi & ThSIce output
580    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
581    o improvements for the MNC output from DIAGNOSTICS:
582      - correct handling of the unlimitied dimension
583      - all dims now have associated coordinate variables
584      - variables located at U, V, and Corner ("Z") points are now written
585        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
586        *all* data points are output
587    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
588    o added pkg/seaice/seaice_monitor.F
589    o mdsio_readfield.F can now read files visible only to master MPI process.
590    o pkg/seaice: some test code for ice-modified ocean stress
591    o exf_getffields interpolation defaults to bilinear for all scalar forcing
592      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
593      spurious negative numbers for precipitation and humidity.  Will cause
594      some small numerical differences for integrations using pkg/exf/exf_interp.F.
595    o pkg/ctrl/
596      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
597        May be enabled via doPackDiag
598      *  introduce z-scaling of
599         + gradient (doZscalePack) and
600         + control (doZscaleUnpack)
601    o pkg/mdsio/
602      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
603      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
604    
605    checkpoint57b_post
606    o simplify options in diagnostics_fill arguments (remove weird combinations)
607    o fix MNC coordinate variables so that they now contain per-face index
608      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
609      general, EXCH2 grids are only aligned to a "local" coordinate system
610    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
611    o Implement instantaneous output within pkg diagnostics:
612      setting a negative frequency in data.diagnostics produces
613     "snap-shot" output (as opposed to time-average if freq > 0)
614    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
615      NOTE: change ptracer diagnostics name: use 2 characters to work with
616            more than 9 tracers. Add also diagnostics of advect & diffus flux.
617    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
618      becomes the coordinate variable for the 'T' dimension
619    o add CF-style coordinate variables to MNC
620      - just a first cut:  numbers are meaningless on the cubesphere and
621        missing along the T axis but otherwise it works!
622    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
623    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
624    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
625      this is based directly on what the model compute, so that the content of
626      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
627    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
628    o clean up build options files for SunOS, in particular
629      - remove -traditional from xmakedepend
630      - change -xarch=v9 to -xarch=native for f77
631      - restore use of make (not gmake)
632      - add CC=gcc if using g77
633    o changes per discussion of AM, JMC, & EH3 today:
634      - move redundant "grid" variables out of "state" -- in preparation of
635        creating proper CF-style coordinate variables and in recognition
636        that any/all grid variables can be easily copied (eg. w/NCO) from
637        the grid files into any of the other NetCDF files
638      - *always* output grid variables with MDSIO (this will eventually be
639        changed)
640      - output MNC grid file if useMNC is true
641    o every instance of _END_MASTER() has been found and replaced with
642      _END_MASTER( myThid ) in order to satisfy certain picky Sun
643      preprocessors
644    o re-arrange diagnostics pkg initialisation:
645     - allow each package to extend the available diagnostics list
646     - add some checking and fix small problems (multi-threaded, ...)
647     - new S/R diagnostics_fill (replace fill_diagnostics):
648       look through the short list of active diag. (instead of the long list)
649       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
650    
651    checkpoint57a_post
652    o this set of changes restores TAMC compatibility
653      tested for global_ocean.90x40x15 adjoint on trough
654      (what a pain)
655    
656    checkpoint57a_pre
657    o some modifs in tools/build_options for sunos
658    o call ctrl_pack for ctrl at end for optimcycle=0
659    
660    checkpoint57
661    o add horizontal bi-harmonic viscosity for vertical velocity
662      - new parameter viscA4W (defaults to viscA4)
663      - affects only non-hydrostatic code
664      - to be done: no-slip lateral boundary conditions
665    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
666    o implement Implicit Vertical advection for pTracers
667    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
668      (implemented also for implicit vertical diffusion & advection)
669    o OBCS: extend application of tracer open boundary conditions
670      to a strip beyond the boundary of width Olx/Oly
671    o add call monitor to TAF set of required calls (flow directives)
672      and include in natl_box_adjoint
673    o untangle a few ifdefs related to cost, ctrl, autodiff
674      untangel a few ALLOW_ECCO_OPTIMIZATION
675    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
676      (theta2, salt2 in ecco_cost_weights)
677    
678    checkpoint56c_post
679    o OBCS as control variables
680      - update ctrl_ad_diff.list, obcs_ad_diff.list
681      - remove balance of obcs controls from default
682      - fix index bug nobcs in ctrl_init
683      - fix dummy fields filen in ctrl_pack
684      - add dummy weights for obcs
685    o lsopt: comment out fort.94 output
686    o optim:
687      - remove unnecessary header files
688      - adjusted namelists
689      - add xerbla.F to Makefile
690    o exf:
691      - multiple modifications of exf_check_range
692      - unit change in exf_init_runoff from [m/year] to [m/s]
693    o mdsio:
694      - i/o-vector change debugLevel from debLevA to debLevB
695    
696    checkpoint56b_post
697    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
698      is called from DO_THE_MODEL_IO
699      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
700      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
701      - clean up PTRACERS_WRITE_TIMEAVE a little
702    o add another verification experiment that tests both the cfc-pkg and
703      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
704      reactive tendencies treated inline with regular timestepping
705    o testreport previously did a lousy job of comparing small numbers, so
706      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
707      implemented in the little c-progam tmp_cmpnum.c which is embedded in
708      testreport.
709    o ptracers_monitor: bug fix for MPI
710    
711    checkpoint56a_post
712    o GCHEM: finish reorganizating the package
713      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
714        (introduces another 3D-array for each passive tracer, but only if
715        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
716        gchemTendency is not needed because the timestep is done separately)
717      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
718      - GCHEM is now---more or less cleanly---separate from PTRACERS
719      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
720        so clear to me how that should be done in a general way.
721    o CFC: improve formatting of output in CFC_ATMOS
722    o PTRACERS:
723      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
724        that ALL experiments with ptracers enable can be checked. This makes
725        GCHEM_MONITOR obsolete.
726      - include a runtime parameter PTRACERS_monitorFreq that defaults to
727        monitorFreq
728      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
729    o add PTRACERS (PTR0[1-5]) to testreport output
730    o exf_check_range:
731      * default changed to .TRUE.
732      * will check values for niter0 if debLevA, every timestep if debLevB
733      * STOP in exf_check_range if 'out of range'
734      * range chosen generous to allow for potential extema
735      TBD: a version with stricter range
736           permitted range would be runtime parameters
737    o GMredi:
738      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
739      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
740      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
741    o GCHEM:
742      - move call to GCHEM_FORCING_SEP, so that it is now called before
743        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
744      - introduced a useGCHEM runtime flag and applied it everywhere.
745      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
746        this flag is now only visible within GCHEM-pkg routines.
747      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
748        be replaced by a 3D array that is computed before thermodynamics; for
749        this, the tracer ID iTracer had to be included into the parameter list
750        of ptracers_forcing
751      - set up forward_step to call gchem_forcing, that will replace
752        gchem_forcing_int in ptracers_forcing
753      - cleaning up
754    o small cleaning of exch2: remove files that are also in eesupp/src
755    
756    checkpoint56
757    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
758    o mnc: cleanup "full" files--fixes out-of-memory problem
759    o ECCO-GODAE
760      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
761      * fully merged and updated from SIO code
762        windstress sign change affects
763        - exf_inscal_[u/v]stress
764        - sign of xx_tau[u/v] adjustments
765        - signs in cost_scat
766      * ctrl_get_gen: avoid update of tau[u/v] for first few days
767      * natl_box_adjoint updated and compressed
768      * 2-level checkpoint switch added
769        (tested in EXP. 1 of natl_box_adjoint)
770      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
771    o SVD
772      * first complete, non-hacked version for SVD calculations
773      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
774        performed via direct access files admtlm_vector.it????
775        (via ctrl_[un]pack)
776      * optimcycle is used for ARPACK iteration counter
777        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
778      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
779        and add linear transforms where necessary
780      * controls are initial/final SST, SSS (can be extended; need to check
781        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
782    o mdsio: filename info to both stderr, stdout
783    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
784      from sign change
785    
786    checkpoint55j_post
787    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
788      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
789    o add consistent build directories and .cvsignore files to verification
790    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
791    o make all subroutines 30 or less characters in length for certain older
792      compilers to work (a thorough search only turns up two routines in
793      pkg/ptracers)
794    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
795      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
796    
797    checkpoint55i_post
798    o change arrays for total vertical diffusivity (2.D if explicit,
799      3.D if implicit) ; each ptracer uses its own background value.
800    o added mnc/NetCDF output capability to ocn_compon_interf
801      - added bits to verification/cpl_aim+ocn so that it can run on
802        ITRDA and other clusters without the mpirun "-wd" option
803    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
804      configuration
805    o give MNC the ability to create additional files rather than
806      exceeding a specified file size limit "MNC_MAX_FILESIZE"
807      - the default is just less than 2GB which is a practical limit
808        on many systems
809    o Compute the non-local term using either KPP vertical diffusivity (=default)
810       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
811    
812    checkpoint55h_post
813    o add verification test "vermix"
814    o remove all the *_ioinc flags and replace with the single global
815      outputTypesInclusive flag
816    o allow to set a vertical profile of vertical diffusivity for T & S
817    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
818    o useMNC moved from data.mnc to data.pkg
819    
820    checkpoint55g_post
821    o Renaming carbon AD experiments to comply with testreport conventions
822    o Updating adjoint of Held-Suarez hs94.1x64x5
823    o Fixing directives for non-ECCO forward_step, after ECCO directives
824      have been fixed to avoid recomp. of do_oceanic_phys
825      Works well for global_ocean.90x40x15,
826      but recomp. issue remains for carbon
827    o Updating adjoint output for natl_box_adjoint after
828      pkg/ecco has been modified (see taga c55d_post)
829    
830    checkpoint55f_post
831    o rename to timeave_init_fixed
832    
833    checkpoint55e_post
834    o some delicate re-shuffle of store directives to avoid one
835      extra call of do_oceanic_physics
836      affects ecco_the_main_loop.F, do_oceanic_physics.F
837      checkpoint_lev1_directives.h
838    o NB: this may break global_ocean adjoint temporarily,
839      but it is clear how to fix it. Will do later, need this now.
840    
841    checkpoint55d_post
842    o ECCO specific cost function terms (up-to-date with 1x1 runs)
843    o ecco_cost_weights is modified to 1x1 runs
844    o modifs to allow observations to be read in as
845      single file or yearly files
846    o enable to read exf forcing fields as either
847      single file or yearly files (flag useExfYearlyFields)
848    checkpoint55d_pre
849    
850    o switch between 2-level and 3-level checkpointing
851    o add ability of MNC to write local and "partial" (eg. 2D slices where
852      the full 3D field is never actually stored) arrays to NetCDF files
853      with the correct (that is, the complete multi-dimensional) set of
854      array indicies
855      - used in mom_vecinv() to write the diagFreq output
856      - tested (demonstrated) in verification/aim.5l_cs
857    o further mnc-ification
858      - add verification/lab_sea to the list with mnc setups
859      - fix undefined mnc v-names in cd_code
860      - add kpp to mnc output (both snapshot and timeave)
861    o non-hydrostatic code
862      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
863        in calc_gw.F
864      - defaults to viscAh
865      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
866        friction or Leith) in non-hydrostatic mode, as long as there is
867        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
868    o pkg/cost
869      extend simple cost functions to treat time mean quantities
870      (T,U,V) via cost_accumulate_state from cost_tile
871    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
872        be 2 times larger than the minimum size the advection scheme requires.
873        now get a perfect conservation of salt in advect_cs test-exp (updated)
874    o GGL90 (Gaspar's TKE mixed layer)
875      - add horizontal diffusion of TKE, requires exchanges in
876        do_fields_blocking_exchanges, horizontal diffusivity is zero by
877        default. In OPA there is no horizontal diffusion of TKE but the
878        mixing coefficients are computed from a horizontal average of TKE of
879        6 points or so. I think that diffusion has a little more physical
880        justification.
881      - clean up ggl90_calc in the hope of reducing memory usage (this hope
882        was in vain)
883      - mask tke-variable in ggl90_init
884    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
885    o fix biharmonic diffusion on CS-grid.
886    o more obcs stuff
887      - added obcs_external_fields_load as an alternative to the EXF-pkg option
888        for reading boundary values. This routine is called from
889        obcs_prescribe_read
890      - updated obcs_check
891      - changed sponge layer relaxation parameter units for days to seconds
892      - turned off sponge layer by default
893      - changed argument list of OBCS_CALC to myTime+deltaTclock
894      - fixed about 35 bugs in obcs_external_fields_load
895    
896    checkpoint55c_post
897    o obcs stuff
898      - new runtime flags useOBCSprescribe, useOBCSbalance
899      - re-arranged obcs_calc
900      - moved exf_getobcs to obcs_prescibe_read
901        obcs_prescibe_read is called after ORLANSKI stuff
902        and independent of it (executable can contain all).
903      - updated obcs_check
904      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
905        These may be necessary only if tangential velocities are
906        prescribed at OB, not sure, needs testing.
907    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
908      which simplifies the calls and passes the ifc check-bounds test
909    
910    checkpoint55b_post
911    o add a 2D scalar, Z location, exchange_2 routine.
912    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
913      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
914      affects advect_cs results (for the wrong reason): update output.txt
915    o use a more standard discretization for biharmonic viscosity ;
916     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
917      affects results of dome set-up: update output.txt
918    o fix gad_advection.F (CubedSphere part), back to version 1.23
919    o fix bug in mom_vi_del2uv.F (CubedSphere part).
920    
921    checkpoint55a_post
922    o merged code to
923      * prescribe/read time-dependent open boundaries
924        (works in conjunction with exf, cal)
925      * sponge layer code for open boundaries
926      * each boundary N/S/E/W now has its own CPP option
927        (healthy for the adjoint)
928    
929    checkpoint55
930    o up-to-date adjoint of previous breaks
931      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
932      - global_ocean_ebm: adjoint still needs fix (TLM ok)
933      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
934      - carbon: * remove tr1-related adjoint verification
935                * add ptracer as control variable
936    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
937      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
938    
939    checkpoint54f_post
940    o in verification/carbin/ remove experiment related to
941      ALLOW_PASSIVE_TRACER (array tr1 etc)
942      code_ad/ input_ad/ results_ad
943    
944    o add two new packages
945      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
946        + subject to optimization (memory)
947      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
948        + subject to reordering (many GOTOs in the original code)
949        + so far opps is called for every (i,j) point, and then operates in
950          the vertical; one may want to reorder the scheme in order operate in
951          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
952          fields)
953    o overhaul of IO so that we now have flags for MDSIO and/or MNC
954      - all verification tests compile and run with linux_ia32_g77
955      - defaults are compatible with current input files--nothing
956        should change if you were not previously using MNC
957      - MNC output has been added in numerous places (eg. timeave)
958        but there are still a few writes not yet do-able with MNC
959        (this is in progress)
960      - flags now allow for either/or/both use of MDSIO and MNC and
961        documentation will soon follow
962      - numerous small formatting cleanups for ProTeX
963    o add version info (via BUILD_INFO.h) to MNC and stdout
964    
965    checkpoint54e_post
966    o add two new packages
967      - pp81 (Packanowski and Philander, 1981), Richardson number and
968        stratification dependent mixing
969      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
970      - these scheme operate in a similar manner as KPP (without ghat, of
971        course), however there is only one diffusivity that is used for both
972        temperature and salinity (and passive tracers)ç
973    o add offline package
974    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
975      provided by Stephanie Dutkiewicz
976    o genmake2: add ability to search for C compilers and cleanup test output
977      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
978    
979    checkpoint54d_post
980    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
981    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
982      leading to additional shift by 5 days each year of integration
983       (i.e. leading to considerable offset over the years)
984    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
985    o start with no AB and no initial filtering (staggerTimeStep):
986      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
987    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
988      (external loading & cpl import/export stay in forward_step.F)
989    o update coupling interface to work with new staggerTimeStep
990    o change MDSIO ptracers_pickup.
991    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
992    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
993    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
994    
995    checkpoint54c_post
996    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
997      this affects (truncation error) output.txt of test-exp:
998       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
999    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
1000    o change Qnet to always be the net heat flux, (+upward).
1001      affects (truncation error) output of natl_box exp.: updated
1002    o define the max number of passive tracers in PTRACERS_SIZE.h
1003    o start to test mnc routinely in exp0
1004    o add sea-ice loading (sIceLoad) as a new forcing field.
1005    
1006    checkpoint54b_post
1007    o add testreport "-j JOBS" option for parallel builds (tested and pretty
1008       impressive on Altix and Opteron systems)
1009    o diagnostics can now write NetCDF files through the mnc package
1010    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
1011    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
1012    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
1013      affects (truncation error) output of lab_sea & natl_box exp.: updated
1014    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
1015    
1016    checkpoint54a_post
1017    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
1018    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
1019    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
1020    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
1021      + internal_wave (shift in writing cg2d_ini_res)
1022    checkpoint54a_pre
1023    
1024    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
1025      - modified verification/lab_sea and natl_box_adjoint accordingly
1026    
1027    checkpoint54
1028    checkpoint53g_post
1029    o prepare splitting of thermodynamics: store convect.counter in common block
1030    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
1031      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
1032    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
1033    o new parameter "nShapS": allow to treat differently S from T (nShapT)
1034    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
1035    o restore adjointability
1036    
1037    checkpoint53f_post
1038    o modifications that affect AIM experiment results (update output.txt):
1039      - no advection of S at top interface Nr (pkg/generic_advdiff)
1040      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
1041    o AIM pkg:
1042      - include stability function into surf.Flux derivative relative to Tsurf
1043      - calculate clear-sky radiation & surface temp. change (for diagnostics)
1044    
1045    checkpoint53e_post
1046    o merged cylindrical coord configuration
1047    o added rotating_tank experiment
1048    checkpoint53e_pre
1049    
1050    checkpoint53d_post
1051    o faulks upgraded: re-generate output.txt that have changed:
1052       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
1053    o Added Bryan and Lewis, 1979, vertical diffusivity profile
1054    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
1055    o added Sadourny discretization of Coriolis
1056      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
1057      - re-enabled use of omega3 (useAbsVorticity)
1058    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
1059      vector-invariant equations
1060      - note: does *NOT* yet use same variable visc. for no-slip BC's.
1061    o recoded the lateral boundary conditions for non-hydrostatic w, this time
1062      hopefully without new bugs
1063      - still to do: biharmonic friction for non-hydrostatic w
1064    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
1065    o regenerated output for global_ocean_ebm (using -ieee)
1066    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
1067      of mom_common/
1068      - simple re-arrangement of instructions within computing loop
1069    checkpoint53d_pre
1070    
1071    checkpoint53c_post
1072    o new version of coupler for AIM+thSIce and Ocean models
1073     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
1074     - land: change Evaporation of snow
1075     - aim with thSIce: fix bug in snow-precip.
1076    o changes to calc_gw.F
1077     - bug fix for w^2 term near the bottom boundary
1078     - (hopefully) improve the lateral slip boundary condtions for use with
1079        partial/looped cells
1080      - because the bug fix changes two verification experiments anyway (exp5
1081        and plume on slope), change the lateral boundary condition from half slip
1082        to the value of no_slip_sides
1083    o ebm package wasnt quite up to the parallel task. Fixed that.
1084    o Adjoint of EBM package + verification
1085      * TLM OK
1086      * ADM not sufficient accuracy yet (needs further testing)
1087    
1088    checkpoint53b_post
1089    o Commiting new energy balance model to repository
1090      * package is pkg/ebm
1091      * verif. is verification/global_ocean_ebm
1092      * references are in ebm_driver.F
1093    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1094    C        Global thermohaline circulation. Part I:
1095    C        Sensitivity to atmospheric moisture transport.
1096    C        J. Climate 12(1), 71-82
1097    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1098    C        Global thermohaline circulation. Part II:
1099    C        Sensitivity with interactive transport.
1100    C        J. Climate 12(1), 83-91
1101    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
1102    C        Destabilization of the thermohaline circulation
1103    C        by atmospheric eddy transports.
1104    C        J. Climate 7(12), 1870-1882
1105    o Will need long integration testing.
1106    checkpoint53b_pre
1107    
1108    o created pkg/mom_common in preparation for variable viscosity code
1109    o renamed and split ini_mnc_io
1110    o pkg/land: only liquid water can diffuse or run-off
1111    o AIM using land: soil wetness availability account for snow
1112    o added printMapIncludesZeros to EEPARMS namelist
1113    
1114    checkpoint53a_post
1115    o restore TAMC compatiility for exf_constants.h
1116      (no usage of _d in .h)
1117    o Additional storing in KPP in an attempt to fix
1118      TAMC problem with adjoint of KPP code.
1119      (no success...)
1120      Identical code works fine with TAF.
1121    o Fixed verification/natl_box_adjoint experiments.
1122      Initial conditions for Experiments 4 and 5 are now
1123      set to "SEAICE_initialHEFF=0", which is more reasonable,
1124      and hence gives results closer to that of Experiment 2.
1125      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
1126    
1127    checkpoint53
1128    o stable checkpoint with up to date adjoint
1129      TLM tests only run for 1st grdchk at the moment. Its unclear if
1130      this is a code problem or a problem with resetting code for g_
1131      variables that is being autogenerated wrong.
1132      Otherwise:
1133       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
1134       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
1135         are both still in chaos following their security messes.
1136    
1137    checkpoint52n_post
1138    o various build (mostly genmake2) changes including:
1139      - ability to build/run more easily within Cygwin and MacOS X
1140      - more complicated Makefiles with a stronger dependence on Gnu Make
1141    o pkg/seaice modifications
1142      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
1143        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
1144        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
1145      - changed proxy for geostrophic velocity and updated
1146        verification/lab_sea/results/* accordingly
1147      - removed ADI dynamic solver from pkg/seaice
1148      - replaced all occurrences of 1/CSTICE or 1/CSUICE
1149        they caused a segmentation fault under certain circumstances
1150      - removed unused field WATR
1151    o bug fix in exf-package:
1152      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
1153         now reflect that.
1154    o small fixes in the cal-package:
1155      - set reference date to first of January for the 'model'-calendar
1156      - failing of cal_CheckDate in cal_FullDate now actually results in a
1157        warning
1158    o small modifications in exf-package to increase flexibility:
1159      - change climtempfreeze from a constant to a runtime parameter that
1160        is specified in data.exf_clim (default = -1.9)
1161      - introduce runtime parameter windstressmax (default = 2.0) that is
1162        specified in data.exf
1163    o fix in pkg/thsice:
1164      - update Evap (Tsf changes) to be consistent with Latent heat flux
1165      - maintain snow precipitation unchanged (even if Tsf >=0).
1166     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
1167    
1168    checkpoint52m_post
1169    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
1170      this does not change any of the results, because myIter=0 in swfrac always
1171      lead to jwtype=2 (the default anyway), but the call makes little sense
1172      as a default
1173    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
1174    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
1175      atmospheric model (AIM) to use it ; add a "slab ocean" component.
1176    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
1177    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
1178    o extending useSingleCpuIO option to work with new exch2 I/O format
1179      - old-style, missing-tile I/O is still accessible by defining CPP
1180        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
1181    o monitor package can write to NetCDF files and/or STDOUT
1182    o fix re-definition bug in MNC_GRID_INIT_ALL()
1183    o doc/api_reference added
1184      - a framework for building an API Reference Manual using all
1185        the "protex" comments embedded in the code
1186      - see pkg/generic_advdiff, pkg/mnc for examples
1187    o MNC:
1188      - make myThid the last argument for all subroutines
1189      - new default for the grid files: NO halos
1190      - add useMNC and other run-time flags
1191      - separate per-file-group handling of the unlimited dimension
1192      - early initialization of MNC w/ flags read at the eeboot stage
1193        and lookup tables set in initialize_fixed
1194      - write all MNC output to a freshly-created directory
1195    o thermodynamics sea-ice (thsice) is now tested with testreport.
1196    o test exp. advect_cs: use the standard cs32 grid ; update output.
1197    o Added functionality to grdchk:
1198      pick global i,j,k position (or nearest wet) where to perform check.
1199    
1200    checkpoint52l_post
1201    o new land formulation:
1202      a) use ground enthalpy as prognostic variable to ensure exact
1203         energy conservation.
1204      b) account for water temperature and for latent heat of freezing
1205         in all processes (rain, run-off, ground storage)
1206      c) compute surface and ground temperature implicitly.
1207    o aim_v23 modification for new land model:
1208      a) Treat separately land / ocean / sea-ice surface fluxes
1209         to allow implicit computation of land & sea-ice surface temp.
1210      b) add snow precipitation.
1211    checkpoint52l_pre
1212    
1213    o fix problem (when 1 tile is empty) in min/max monitor.
1214    o fix bug in timeAve (u,vZetatave in common block)
1215    o no restoring terms under ice for pkg/seaice
1216    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
1217    o bug fix for pkg/seaice pickups
1218    o change MNC call locations and add coordinate attributes
1219    o mask vorticity at the corner ; affects global_ocean.cs output
1220    o fix ini_curvilinear_grid ; test CS experiments with mpi
1221    o aim.5l_cs: modify sea-ice fraction input file ; update output
1222    o exf: Adding simple range check routine for exf fields after read
1223    
1224    checkpoint52k_post
1225    o removed top-level directory "diags"
1226      - we migrated these functions to pkg/timeave a long time ago
1227    o fixed bug introduced in pkg/monitor
1228    o accuracy ctrlprec = 32 insuffient for gradient checks using
1229      averaged fields (I/O via cost_averages)
1230      -> use ctrl.h in active_file*.F to control I/O precision.
1231    o paramter list of CALL ADTHE_MAIN_LOOP
1232    o added initial do_the_model_io to ecco
1233    o set all ...Freq to zero after cost_final
1234      taveFreq, dumpFreq, pChkptFreq
1235    o MAIN and ECCO differentiability restored
1236    
1237    checkpoint52j_post
1238    o fix nchklev in tamc.h for global_ocean...
1239    o Bringing flow and store directives up-to-date
1240    o Really weird thing!
1241      call do_the_model_io from the_main_loop with parameters
1242      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
1243      TAF places a faulty re-call of initialise_varia
1244      after cost_final call which should not be there!
1245    checkpoint52j_pre
1246    
1247    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
1248      error messages
1249    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
1250    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
1251      debug output
1252    o modfied mdsio_writefield.F to handle non-global files under exch2
1253    o update AIM Cubed-Sphere exp (aim.5l_cs):
1254      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
1255    o update AIM Equatorial Channel exp:
1256      use standard aim_v23 pkg and change the SST fields to be more realistic.
1257    o globalFile now works with exch2
1258    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
1259      mon_vort3.F to make exch2 friendly with >1 tile per cube face
1260    o limit timeave output for hi-res integrations
1261    
1262    checkpoint52i_post
1263    o removed CPP_EEOPTIONS.h from verification/*/code
1264    o updated the tiling for global_ocean_pressure
1265    checkpoint52i_pre
1266    
1267    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
1268      the old pkg/aim).
1269    
1270    checkpoint52h_pre
1271    o shortened offending lines in exch2_send_rx?.template
1272    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
1273    o genmake2: add build & execute test for NetCDF code
1274    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
1275      old grid files, moved CPP_EEMACROS.h to pkg/exch2
1276    o added useSingleCPUIO flag to monitor.F and mon_out.F
1277    o added temporary hack for sea-ice dynamics on the cube:
1278      metric terms are ignored and it is assumed that
1279      there is no sea-ice on cube faces 1, 2, 4, and 5.
1280    
1281    checkpoint52f_post
1282    o added exch2 cube routines to pkg/exch2
1283    o modified hs94.cs-32x32x5 to use it
1284    o added new grid files to hs94.cs-32x32x5
1285    checkpoint52f_pre
1286    
1287    checkpoint52e_post
1288    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
1289      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
1290    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
1291      to work with implicit vertical advection and AB ;
1292    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
1293    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
1294     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
1295    checkpoint52e_pre
1296    
1297    o fix bug in impldiff when Nr=1 or Nr=2.
1298    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
1299    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
1300    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
1301      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
1302    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
1303    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
1304    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
1305    
1306    checkpoint52d_post
1307    o re-tiled many expts to allow comparison in multi-processor mode
1308      - updated output accordingly
1309      - changed hs94.128x64x5 to use intial T from file rather than use the
1310        random number generator
1311    o add infrastructure in model routines for fizhi and gridalt packages
1312    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
1313    o changes to permit hi-res, cubed-sphere, configuration
1314      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
1315      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
1316      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
1317        of surface winds for the cube
1318      (A verification experiment, based on global_ocean.cs32x15, but with
1319       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
1320       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
1321       complete with example surface forcing files and matlab scripts to look
1322       at the output and compare it with that of global_ocean.cs32x15.)
1323    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
1324       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
1325       to conform to the common rule.
1326    o check-in the first version of the coupler + interfaces for multi-components
1327       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
1328       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
1329       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
1330       - ocean and atmos. share the same horizontal grid (no interpolation).
1331       - exchanges between component and coupler is done in forward_step
1332    o new verification experiment, cpl_aim+ocn:
1333       coupled ocean - AIM atmosphere on cs32 grid.
1334    
1335    checkpoint52d_pre
1336    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
1337    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
1338    
1339    checkpoint52c_post
1340    o Fixing OPTIONS files for use of exf:
1341      - ALLOW_ECCO not needed
1342      - ECCO_CPPOPTIONS.h should not be included from
1343        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
1344        as has been the case in the past
1345      - All cal/exf related options are currently set in
1346        single header file. Should remain so until we
1347        agree on a consistent new policy.
1348    o Removed all CPP options for cal package.
1349      cal has no more CPP options.
1350    o modified STOREs in GAD_ADVECTION
1351    o corrected key comp. for passkey
1352    
1353    checkpoint52b_post
1354    o new version: "thsice" of thermodynamic sea-ice pkg:
1355     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
1356     - modify fluxes but do not change theta directly;
1357     - light cleaning of bulk_force pkg (still needed with thsice).
1358     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
1359       + output_thsice.txt to test thsice & bulk_force pkgs.
1360    o put back grid & coriolis monitor output.
1361    checkpoint52b_pre
1362    
1363    o call "do_the_model_io" at the beginning (=> dump initial state)
1364    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
1365    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
1366      (need info on NUMBER_OF_PTRACERS)
1367    o missing PTRACERS headers in some routines
1368    o default tamc.h in pkg/autodiff supposed to crash
1369      to ensure proper customization
1370    
1371    checkpoint52a_post
1372    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
1373      - moved surfaceTendencyTice from pkg/seaice to main code
1374      - subroutine FREEZE_SURFACE now limits only surface temperature
1375        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
1376        => new output.txt for global_ocean.cs32x15 & global_with_exf
1377      - keep the old version of FREEZE for backward compatibility;
1378        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
1379      - corresponding modifs for TAF directives
1380    o added surface flux output variables to TIMEAVE_STATVARS
1381    o time-averaged output for pkg/ptracers
1382    o fix problem with ECCO-related divided adjoint
1383      snapshot file was missing some ad-variables,
1384      but no warning issued by TAF
1385    
1386    checkpoint52a_pre
1387    o some bug fixes for #undef REAL4_IS_SLOW
1388    
1389    checkpoint52 = ecco_c52_e35
1390    o after testing adjoints of checkpoint51u_post
1391    
1392    checkpoint51u_post
1393    o this is the post-merge tag of the ecco-branch
1394      (needs another clean checkout and re-testing)
1395    o various natl_box_adjoint configs and results
1396      but no input fields
1397    o obcs adjoint not yet merged!
1398    o adding ECCO global 1x1 and 2x2 degree configs
1399    o updated/extended some store directives for seaice
1400    o pkg/ecco now containes ecco-specific part of cost function
1401    o top level routines the_main_loop, forward_step
1402      supersede those in model/src/
1403      previous input data.cost now in data.ecco
1404      (new namelist ecco_cost_nml)
1405    o in ctrl/ cleaned some cross-dependencies and updated CPP options
1406    
1407    checkpoint51t_post
1408    o this is the pre-merge tag of the ecco-branch
1409    
1410    checkpoint51s_post
1411    o cleanup: removed various obsolete #define-s
1412    o pkg/grdchk
1413      - renamed 'ph-grd 3' to 'grad-res'
1414      - merged from ecco-branch
1415        (remaining bug fixes for obcs gradient checks)
1416      - additional high-precision output for testreport
1417        (grep for 'precision_grdchk_result')
1418    
1419    checkpoint51r_post
1420    o cleaned up or removed CPP_OPTIONS.h files
1421    o updated results for some of the tests to reflect the new
1422      optfiles (-ieee: -O0 instead of -O3)
1423    
1424    checkpoint51q_post
1425    o cd_code:
1426      - moved cd_scheme.F -> cd_code_scheme.F
1427      - separate read_checkpoint from cd_code_ini_vars.F
1428      - separated cd_code part from write_checkpoint
1429      - updated AD_SOURCE, generated .flow
1430      - added CD_CODE_VARS.h to the_main_loop
1431      - Moving cd_code specific store dir.s to pkg/cd_code
1432    o ctrl package totally restructured
1433      - pack/unpack now optional and decoupled from
1434        xx_/adxx_ I/O
1435      - ctrl_pack/unpack cleaned
1436        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
1437      - confined inclusion of AD_CONFIG.h to where necessary.
1438    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
1439    
1440    checkpoint51p_post
1441  o create initial cd_code package  o create initial cd_code package
1442      - WARNING: the initialization of fields within packages
1443        is broken because INI_FIELDS (where READ_CHECKPOINT is
1444        called) is called *before* PACKAGES_INIT_VARIABLES.
1445        This seems to be backwards since
1446        1) its important to initially zero the entire field including
1447           the "halo" region
1448        2) zeroing needs to be done *before* reading pickup info
1449           and the pickup call might or might not happen in any
1450           particular run
1451      - this needs an overhaul for R2
1452  o cleanup verification/*/code/GMREDI_OPTIONS.h  o cleanup verification/*/code/GMREDI_OPTIONS.h
1453  o cleanup testreport  o cleanup testreport
1454    

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