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revision 1.198 by edhill, Tue Oct 28 22:57:59 2003 UTC revision 1.635 by jmc, Mon Mar 20 14:49:24 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 add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
8      (were missing in NH mode, and wrong in quasihydrostatic mode).
9      waiting for Chris updated version of calc_gw to add those CALLs.
10    o fix bug in quasihydrostatic S/R ;
11      add a test for this option: global_ocean.90x40x15.qshyd
12    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
13      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
14    o add on/off flag useOffLine for package OFFLINE
15    o seaice:
16      - modify advection so that it works also on the C-grid
17      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
18        problem in multi-tile runs with C-grid
19      - add flags for clipping ice velocities and/or masking solver forcing
20      - fix drag (ocean on ice) formulation and a bug that caused noise in the
21        C-grid solver
22      - added a few comments to seaice_diffusion.F
23      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
24        are now exclusive)
25      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
26        required re-ordering the code a little:
27       + make DAIRN global variable (defined in SEAICE)
28       + move computation of the viscosities eta and zeta into a new separate
29         routine (because I need to recompute them in seaice_ocean_stress.F)
30    
31    checkpoint58b_post
32    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
33      update output.txt of exp. aim.5l_cs.thSI
34    o various mnc cleanups and improvements:
35      + shrink lookup tables by factor of ~4
36      + better error reporting when running out of lookup space
37      + able to handle longer path/file names (up to 500 chars)
38    o adjoint:
39      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
40      - TBD: "hidden" mom_vecinv recomp. in dynamics
41    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
42     (allow to differentiate between forcing components using new integer flags:
43      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
44     and add new flag to put Dissipation tendency out of Adams-Bashforth.
45    o ecco
46      - enable trend removal from SSH anomaly obs.
47    o adjoint
48      - a fix for PmEpR when #undef EXACT_CONSERV
49      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
50      - try to fix "hidden" recomp. in forward_step for NLFS
51        (NLFS seems broken sometimes after I checked it in)
52    o seaice:
53     - add c-grid version of the dynamic solver:
54       + three new routines that are the c-grid substitute lsr, dynsolver
55         and ostres
56       + put a few fields that were local to dynsolver into global common
57         blocks, so that I can move the computation of stresses etc into
58         seaice_lsr (saves coding but may break the adjoint).
59     - replace more hardwired parameters by runtime parameters
60     - add ice masks that mask the rhs of the implicit solvers where there
61       is no ice (commented out in seaice_dynsolver, because i am not sure
62       if this works properly), eventually this should replace the clipping
63       of ice velocities in seaice_dynsolver to +/-40cm/s.
64    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
65      include it only where its needed
66    o move balancing of fluxes before the call of external_forcing_surf
67    o seaice:
68      - correct units of turning angles (now they are really in degrees)
69      - move computation of GWATX/Y out of main routine into dynsolver
70      - initialize GWATX/Y in seaice_init
71    o Apply mask on Fresh-Water flux (needed for SSH forcing).
72      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
73    o seaice: add runtime flags for turning angles (default to zero)
74    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
75      and trend from exf forcing and ctrl control adjustments
76    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
77      (since checkpoint57x_post)
78    o change the default rotation period to 86164.s = the Earth rotation
79    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
80      and based on a reference stratification. Tested within hs94.cs-32x32x5.
81    o seaice advection: add code for choosing between the default (2nd order
82      central differences) and multiDim advection schemes provided by
83      pkg/generic_advdiff
84    o seaice:
85      - removed all references to SEAICE_GRID.h fields from
86        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
87        (cubed-sphere configuration will change a little)
88      - grid computations in seaice_init are obsolete now.
89      - cleaned up code a little so that is easier to read (hopefully).
90      - added new (better?) discretizations of default advection and diffusion
91        (turn on with SEAICEuseFluxForm)
92      - replace 1 in 3d global fields by kSurface in growth.F
93      
94    checkpoint58a_post
95    o seaice:
96      - bug fix in advect.F
97    o shelfice:
98      - separate shelfice load anomaly from pload (breaks with time
99        dependent forcing), => introduce constant field shelficeLoadAnomaly.
100        Its default is 0., but it may be computed more cleverly from (unknown)
101        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
102        done offline. A good approximation of the pressure load anomaly is
103        necessary to avoid large initial adjustment processes underneath
104        deep-reaching shelfice.
105      - small fix in ISOMIP shelfice_thermodynamics
106      - add more sophisticated thermodynamics of Hellmer (1989), this is
107        now the default
108      - give a few constants more intuitive names
109    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
110      if bulk formulae are used in long integration (especially EmPmR). Turn
111      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
112      if balancePrintMean, the imbalance that is substracted is printed to
113      STDOUT.
114    o fix bug (typo) in obcs_apply_eta.F
115    o add a new package shelfice which enables us to model the circulation
116      underneath shelf-ice with draughts of hundreds of meters.
117     - works
118     - to do: + include improved thermodynamics
119              + check whether kSurfC (from model/inc/SURFACE.h) can be used
120                instead of new field kTopC
121              + can we use topoFile, Ro_surf and existing code in ini_depth.F
122                instead of new field R_shelfIce and new code in ini_depth.F
123                and ini_mask_etc.F?
124              + adjust vertical mixing schemes?
125    o seaice pkg:
126     - add a cpp-flag to include a simple formula for a salinity dependent
127       freezing point of sea water at the surface
128     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
129       meridional stresses are now different (and hopefully correct)
130    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
131       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
132       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
133    o pkg/diagnostics: add options and parameters for regional-statistics
134       diagnostics ; define regions by reading a region-mask from a file
135       (might add other options later)
136    o pkg/bulk_force:
137     - add option and parameters to use AIM surface-flux formulae.
138     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
139       others forcing fields (defined in PARM05, parameter file "data") are loaded
140       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
141     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
142     - use the right EXCH call for uwind,vwind (to work on CS-grid).
143     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
144       and parameters (note: calcWindStress replaces .NOT.readwindstress).
145     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
146    
147    checkpoint58
148    o add "--embed-source" option to genmake2 which, when the supporting
149      tools can be compiled (as determined by genmake2) will turn on the
150      embed_files package which then embeds the entire MITgcm source code
151      (*.[fFhc] + Makefile) used for the build within the executable
152      - requested by CNH but off by default
153      - adds a paltry <9MB to the mitgcmuv executable in most cases
154      - only writes the output when useEMBEDSRC in eedata is true
155    o clean up 3-dim. relaxation codes:
156      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
157      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
158      * Thanks to Tom Haine for testing!
159    
160    checkpoint57z_post
161    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
162      affects output (@ truncation level) of exp. plume_on_slope ; updated.
163    o fix the pickup behavior for obcs in combination with ptracers
164    o fix a bug in ptracers_external_fields_load
165    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
166      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
167    o transfered surface NH pressure to eta field (if exactConserv).
168    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
169         and update lab_sea output.txt file.
170    o completing 3-dim. relaxation code: additional term
171         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
172      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
173      * At compile time, in "EXF_OPTIONS.h" set
174          #define  ALLOW_CLIMTEMP_RELAXATION
175          #define  ALLOW_CLIMSALT_RELAXATION
176      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
177          tauThetaClimRelax3Dim = 15552000.0,
178          tauSaltClimRelax3Dim  = 15552000.0,
179      * 3 cases:
180          1) Use a constant-in-time 3-dim. field
181          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
182          3) Real-time relax. to time-evolving prescribed field
183    o Adding Laplacian-type smoothness constraint on
184      initial and boundary (forcing) controls (ic, bc)
185      * enable at compile-time via
186        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
187      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
188      * Absolute scale somewhat unclear so far
189      * no area weighting was included since no other cost term does so far
190    
191    checkpoint57y_post
192    First step for a NLFS adjoint
193    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
194    o new init. routines for calc_r_star, calc_surf_dr
195    o still need to deal with ini_masks_etc
196    o testreport seemed happy
197    checkpoint57y_pre
198    
199    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
200    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
201    o add new offset feature to offline pkg (plus minor cleanup)
202    o cfc fixes for final year of integration
203    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
204      be in GCHEM_OPTIONS).
205    
206    checkpoint57x_post
207    o fix testreport Pb in multiple test experiment.
208    o cleanup our namelist syntax in verification:
209      - make it more F95 standards compliant (some work still needed)
210      - allows the vast majority of our tests to work with gfortran
211    o Non-Hydrostatic:
212     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
213     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
214    o Allow to apply AB on T,S rather than on AB(gT,gS):
215     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
216     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
217       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
218     - need a "clever" read_pickup to restart from the other AB formulation
219    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
220    o remove some unused variables (reduces number of compiler warnings)
221    o adjoint
222      * Disable useVariableViscosity for adjoint for time being
223        (there are a number of extensive recomputations)
224      * Initialize certain variables needed for adjoint
225    
226    checkpoint57w_post
227    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
228                 fix the singleCpuIO RS version of MDSWRITEFIELD
229       and add a WARNING if using globalFiles=T with multi-processors.
230    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
231      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
232    o tracer advection scheme:
233      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
234       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
235       was not very convenient).
236      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
237       (further tests needed for the implicit DST & Flux-Limiter schemes).
238    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
239      and sRef for convenience, handy, when you want to initialize
240      ptracers in a large domain with a constant non-zero value. Also,
241      untangle ptracers_init.F a little.
242    
243    checkpoint57v_post
244    o change dome exp. to use variable viscosity in side-drag terms.
245    o remove all the files from the cfc_offline test since they are now
246      incorporated into tutorial_cfc_offline which has been producing
247      identical results for a few days of testing
248    o add new parameter: sideDragFactor to enable half-slip-side BC
249      and change side-drag S/R to use viscosity from mom_calc_visc
250      (can switch back by setting sideDragFactor=0.); affects results at
251      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
252       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
253    o vorticity & strain are now computed without masking, to account for
254      no-slip-side BC in variable viscosity calculation ; mask is applied
255      anyway later on, before computing advection/coriolis terms.
256    o modify exp4 to test new obcs support for reading from external files
257      and for passive tracers
258    o fix behavior of ptracers_monitor when monitor output is written to a
259      netcdf-file; still not independent of monitor.F (writes in the same
260      file).
261    o change default value of tRef (put a uniform, meaningful value for ocean
262      & atmos) and initialize sRef (was missing, as Martin mentioned).
263    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
264      to be proportional to enstrophy dissipation length.  Thus,
265       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
266      This is now consistent with Smagorinsky and with the manual.
267    
268    checkpoint57u_post
269    o OBCS and PTRACERS: add open boundary support for passive tracers
270      - either use homogenous (pseudo) v.Neumann conditions or prescribe
271        OB-values from file; this is not different from the way theta and salinity
272        are treated
273      - however, Orlanski-radiation conditions are not supported, and the model
274        will stop if you use pTracers and Orlanski at the same time.
275      - beefed up the rountine obcs_external_fields_load: now only those open
276        boundary values are overwritten with values from files for which there
277        are really files, otherwise the OB-fields remain untouched. This makes
278        it possible to use different OBs at different ends of the domain (as
279        with EXF)
280    o reduce number of exch calls in shap_filt (s2).
281    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
282      truncation level) 4/5 MLAdjust test results (11&12 digits match).
283    
284    checkpoint57t_post
285    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
286    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
287      same truncation, independent of the face number: affects affects several
288      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
289    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
290      note that biharmonic viscosity + no-slip was not tested in any experiment.
291    o fix bug in non-linear free-surf side-drag ; generate new output for
292      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
293    o make mnc honor the writeBinaryPrec flag for most kinds of output
294    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
295    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
296      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
297    o add brackets in multi-terms sum to get same truncation, independent of
298      the face number (manage to get exactly same value of gU,gV at the cs-edge)
299      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
300    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
301      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
302      a maximum grid-scale Reynolds number.  Also, changes all length calculations
303      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
304      Suggested values of viscosity parameters found in mom_calc_visc.
305      Many new viscosity diagnostics available.
306    
307    checkpoint57s_post
308    o Add clearing-house for viscosity calculations, mom_calc_visc and
309      correct numerous bugs in LeithD and Smagorinsky discretizations.  
310      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
311      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
312      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
313      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
314      The Strain-Tension form is now called with useStrainTensonVisc=.true.
315      ViscAhStrain and viscAhTension are now retired.
316    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
317    o In response to JMC's bug report, genmake2 now ignores any soft-links
318      that it finds in the *current* directory when searching for files.
319      Soft-links found in any other source directories will still work as
320      they did before.
321    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
322      a C routine to unlimit the stack size
323    o mnc-ify pkg/aim snapshot vars
324    o mnc-ify pkg/land as requested by Daniel
325    o various changes to mnc including:
326      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
327      - output can now be grouped so that all files within a group
328          change the ITER portion of their names in lock-step together
329      - can now read ("global") PER-FACE (in addition to PER-TILE) files
330          and works with both EXCH1 and EXCH2 (but needs more testing)
331      - writing works for all verification test cases w/ g77 on Linux
332    
333    checkpoint57r_post
334    o make MNC variable initialization happen earlier
335    o add diagnostics for (almost) each term of the momentum Eq.
336    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
337    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
338    o remove MINIMAL_TAVE_OUTPUT option ;
339      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
340    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
341      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
342    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
343    o add time-dependent SST, SSS control
344    o cost terms in ecco/ modularized (new cost_generic.F)
345    o cost_averages routines are modularized (new cost_averagesgeneric.F)
346    o new infrastructure for seaice model vs. obs misfits in seaice/
347      * driver from the_main_loop.F is seaice_cost_driver.F
348      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
349      * gradient check in Exp. 6a of natl_box_adjoint/
350    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
351      (see README file)
352    
353    checkpoint57q_post
354    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
355    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
356      - bug was reported by Jean-Michel and Ian Fenty
357    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
358      update exp. cpl_aim+ocn output.
359    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
360      Needed for high-res. runs with large global files
361      to be able to limit tapelev size
362    o Changed some tests for adjoint:
363      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
364      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
365      * global_ocean.90x40x15/ back to default 3-level checkpointing
366    o Modifications to enable scripted COMMON to MODULE conversion
367      * verification/OpenAD/code/ has necessary scripts and description;
368      * converts, compiles and runs successfully;
369    
370    checkpoint57p_post
371    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
372    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
373      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
374    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
375    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
376      (was already the case for dissipation with mom_vecinv,
377       and also the case for grad.PhiHyd when staggered-timeStep)
378      This will allow to put dissipation out-off the AB time-stepping.
379     Unfortunately, affects truncation error. Update output of exp. that "fails"
380      (cg2d matching number) and leave the others for later: front_relax(10),
381      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
382      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
383    
384    checkpoint57o_post
385    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
386      (2) its ready to be documented during the 20050801 DocFest
387    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
388      for ideal_2D_oce and lab_sea on linux_ia32_g77
389    o set to #undef CTRL_SET_OLD_MAXCVARS_30
390      in global1x1_tot/code_seaice_adj to access indices 32, 33
391      (worth another tag)
392    
393    checkpoint57n_post
394    o adding precip control xx_precip 32
395    o adding swflux control xx_swflux 33
396    o Replacing 10 forcing penalty cost routines by 1 generic.
397    o Implementing partitioning in time-mean and variable adjustment
398      for atmos. state.
399    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
400    o in natl_box_adjoint:
401      * updated exp 1 to 10
402        (but does not have time-mean vs. variable split results yet)
403    o updated global1x1/*_seaice_adj/
404      to incorporate latest changes
405    o enable useSingleCpuIO for mdsio vector routines
406      (applies in particular to tapelev I/O)
407    o removed inefficient K-loop in all active_file*control*.F
408    
409    checkpoint57m_post
410    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
411      and advect_cs (use EXCH-2 and standard cs-32 grid files).
412    o pkg/exch2: filling of face-corner halo regions is optional
413      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
414    
415    checkpoint57l_post
416     tag before updating tutorials (pre-release-2)
417    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
418       for output and interpolation of input fields onto model grid)
419    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
420       Affects results of exp. rotating_tank ; update output.txt.
421    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
422          and taking the square quantity and/or using a fraction-weight field.
423    o fix aim_diagnostics_init.F mate numbers.
424    o add mnc output capability to diagnostics/diagstat and update
425      our cvsignore files for the ACSII output generated
426    
427    checkpoint57k_post
428    o lab_sea now uses diagnostics package and provides a suite of
429      new EXF diagnostics output.
430    
431    checkpoint57j_post
432    o exf
433      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
434        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
435        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
436      * extended diagnostics output
437        - now includes all EXF variables
438        - hs, hl moved to common block
439        - separate S/R for diagnostics, called after ctrl vector is added
440        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
441        - EXFqnet contains true Qnet (i.e. includes qsw)
442      * updated verif. lab_sea, global_with_exf
443      * Rearranging hflux (exf_mapfields -> exf_getforcing)
444        to ensure that diagnostics sees a true EXFqnet
445    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
446    o diagnostics pkg: change pointers so that 1 diagnostic can be used
447      several times with different frequencies.
448    o mnc-ify the thsice package as requested by Daniel Enderton
449      - the monitor--MNC output needs work
450      - many attributes need to be added (most are currently blank)
451    o mnc-ify theaim_v23 package as requested by Daniel Enderton
452      - many attributes need to be added (most are currently blank)
453    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
454    o add Sadourny like discretization to the 4th.O vorticity advection scheme
455    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
456      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
457         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
458    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
459     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
460    
461    checkpoint57i_post
462    o Diagnostics package was changed: diagnostic allocation is now deactivated
463      by setting an empty file name in the namelist (used to be by setting 0 frequency)
464    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
465      add 1rst Order upwind vertical Shear.
466    o add a quick fix for A/B checkpointing in OFFLINE mode
467    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
468      end-run around the C/Fortran linking horror in eesup/src/timers.F
469    o added pkg/runclock: allows user to terminate run based on wall clock
470    o added non-hydrostatic scaling parameter: nh_am2
471    o pkg/my82: futile attempt to make results compiler-independent by adding
472      some "_d 0", etc. no effect.
473    o for mnc output, fill the 'T' coordinate var with myTime and create a
474      separate 'iter' variable for iteration count
475    o pkg/diagnostics:
476      add new capability: output of Global/Regional & per-level statistics ;
477      tested against monitor output (including land & thSIce) on various exp.
478    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
479    
480    checkpoint57h_done
481      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
482      data.diagnostics, data.gchem, data.ptracers) is done.
483    
484    o pkg/diagnostics: prepare for Global/Regional statistics.
485      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
486    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
487      and rename it: DIFFERENT_MULTIPLE
488    
489    checkpoint57h_post
490    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
491    o pkg/diagnostics: change output frequency, now in seconds (instead
492      of Nb of iterations). This requires to change data.diagnostics.
493    checkpoint57h_pre
494    
495    o in mnc, let the user create the output dir if both mnc_outdir_date
496      and mnc_outdir_num are false
497    o add fflags() to pkg/diagnostics which allows one to specify, on a
498      per-file basis, the file precision [default behavior is unchanged]
499    o added diagnostics to pkg/kpp, including computation of mixed layer
500      depth based on a temperature/density criterion
501    o updated verification/natl_box to test the new pkg/kpp diagnostics
502    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
503    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
504    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
505      not mnc -- this mistake was found by JMC and is now corrected
506    
507    checkpoint57g_post
508    o add Adams-Bashforth 3rd Order time stepping:
509      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
510      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
511    checkpoint57g_pre
512    
513    o make lambda[Theta,Salt]ClimRelax spatially varying
514      (default remains spatially uniform constant based on tau)
515    o added new control variables
516      * init. uVel, vVel, etanN
517      * lambda[Theta,Salt]ClimRelax
518    o separate masks used for ctrl_pack/unpack 'from write_grid' output
519      (suggested by G. Forget)
520    
521    checkpoint57f_post
522    o add parameter "baseTime" = model base time = time at iteration zero
523      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
524      account for baseTime shift
525    o move Coriolis arrays from PARAMS.h to GRID.h
526    checkpoint57f_pre
527    
528    o mnc-ifying the seaice package
529    o introduced an alternative length scale calculation for use in the limiting
530      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
531    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
532    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
533      as well as grad(vort3).  Made it compatible with both approximate form
534      for the cubed sphere and full form of these gradients.  Added flag
535      useFullLeith to select between approximate and full form.  
536    o add "d0" in getcon.F to reduce differences between compilers/platforms
537      update output.txt of exp. fizhi-gridalt-hs
538    o change port_rand funtion to allow to set the seed.
539    o fix obscure MNC bug involving conversion between reals and integers
540      - it caused no problems with certain (eg. gcc, ifc) compilers but the
541        new version is now more standards-compliant
542    o adjoint-related modifications
543      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
544      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
545      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
546    
547    checkpoint57e_post
548    o Adding eddy stress controls a la Ferreira et al.
549    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
550    
551    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
552      update output.txt of exp. fizhi-gridalt-hs
553    o add more "Z" dimensions and associated coordinate vars to MNC
554    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
555    o parameter calendarDumps: when set, approximate months (30-31 days) and years
556      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
557      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
558      months and years.  Requires pkg/cal.
559    o diagnostics: add pickup functionality
560      - off by default for backwards compatibility
561      - current version only uses MDSIO -- MNC will be added
562    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
563    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
564    
565    checkpoint57d_post
566    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
567    o modify verification/ideal_2D_oce so that it tests the creation of mnc
568      output from the diagnostics package
569    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
570    o make genmake2 more portable by using ".$FS" instead of ".f" for more
571      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
572    o add coordinate variables to the MNC output from the diagnostics package
573    o change MNC-flags default value: true when useMNC=TRUE
574    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
575      the ability (off by default) to read the grid information using MNC
576    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
577    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
578    o do snap-shot diagnostics at the middle of the time-interval (instead of
579      at the end).
580    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
581      new test for AIM with thSIce + slab-ocean
582    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
583    o move state variable diagnostics to the beginning of the time step ;
584      (note: still needs some work specially for snap-shot diagnostics)
585      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
586    
587    checkpoint57c_post
588    o Change testing option (-ieee) to get closer agreement between g77 & ifort
589    o generate new output.txt files on faulks with g77 & the new -ieee option
590    checkpoint57c_pre
591    
592    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
593      update output.txt of exp. global_ocean.90x40x15
594    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
595      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
596    o add saltFlux(+File) forcing capability with periodicExternalForcing
597    o allow to use pkg diagnostics for GM-Redi & ThSIce output
598    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
599    o improvements for the MNC output from DIAGNOSTICS:
600      - correct handling of the unlimitied dimension
601      - all dims now have associated coordinate variables
602      - variables located at U, V, and Corner ("Z") points are now written
603        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
604        *all* data points are output
605    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
606    o added pkg/seaice/seaice_monitor.F
607    o mdsio_readfield.F can now read files visible only to master MPI process.
608    o pkg/seaice: some test code for ice-modified ocean stress
609    o exf_getffields interpolation defaults to bilinear for all scalar forcing
610      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
611      spurious negative numbers for precipitation and humidity.  Will cause
612      some small numerical differences for integrations using pkg/exf/exf_interp.F.
613    o pkg/ctrl/
614      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
615        May be enabled via doPackDiag
616      *  introduce z-scaling of
617         + gradient (doZscalePack) and
618         + control (doZscaleUnpack)
619    o pkg/mdsio/
620      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
621      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
622    
623    checkpoint57b_post
624    o simplify options in diagnostics_fill arguments (remove weird combinations)
625    o fix MNC coordinate variables so that they now contain per-face index
626      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
627      general, EXCH2 grids are only aligned to a "local" coordinate system
628    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
629    o Implement instantaneous output within pkg diagnostics:
630      setting a negative frequency in data.diagnostics produces
631     "snap-shot" output (as opposed to time-average if freq > 0)
632    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
633      NOTE: change ptracer diagnostics name: use 2 characters to work with
634            more than 9 tracers. Add also diagnostics of advect & diffus flux.
635    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
636      becomes the coordinate variable for the 'T' dimension
637    o add CF-style coordinate variables to MNC
638      - just a first cut:  numbers are meaningless on the cubesphere and
639        missing along the T axis but otherwise it works!
640    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
641    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
642    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
643      this is based directly on what the model compute, so that the content of
644      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
645    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
646    o clean up build options files for SunOS, in particular
647      - remove -traditional from xmakedepend
648      - change -xarch=v9 to -xarch=native for f77
649      - restore use of make (not gmake)
650      - add CC=gcc if using g77
651    o changes per discussion of AM, JMC, & EH3 today:
652      - move redundant "grid" variables out of "state" -- in preparation of
653        creating proper CF-style coordinate variables and in recognition
654        that any/all grid variables can be easily copied (eg. w/NCO) from
655        the grid files into any of the other NetCDF files
656      - *always* output grid variables with MDSIO (this will eventually be
657        changed)
658      - output MNC grid file if useMNC is true
659    o every instance of _END_MASTER() has been found and replaced with
660      _END_MASTER( myThid ) in order to satisfy certain picky Sun
661      preprocessors
662    o re-arrange diagnostics pkg initialisation:
663     - allow each package to extend the available diagnostics list
664     - add some checking and fix small problems (multi-threaded, ...)
665     - new S/R diagnostics_fill (replace fill_diagnostics):
666       look through the short list of active diag. (instead of the long list)
667       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
668    
669    checkpoint57a_post
670    o this set of changes restores TAMC compatibility
671      tested for global_ocean.90x40x15 adjoint on trough
672      (what a pain)
673    
674    checkpoint57a_pre
675    o some modifs in tools/build_options for sunos
676    o call ctrl_pack for ctrl at end for optimcycle=0
677    
678    checkpoint57
679    o add horizontal bi-harmonic viscosity for vertical velocity
680      - new parameter viscA4W (defaults to viscA4)
681      - affects only non-hydrostatic code
682      - to be done: no-slip lateral boundary conditions
683    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
684    o implement Implicit Vertical advection for pTracers
685    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
686      (implemented also for implicit vertical diffusion & advection)
687    o OBCS: extend application of tracer open boundary conditions
688      to a strip beyond the boundary of width Olx/Oly
689    o add call monitor to TAF set of required calls (flow directives)
690      and include in natl_box_adjoint
691    o untangle a few ifdefs related to cost, ctrl, autodiff
692      untangel a few ALLOW_ECCO_OPTIMIZATION
693    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
694      (theta2, salt2 in ecco_cost_weights)
695    
696    checkpoint56c_post
697    o OBCS as control variables
698      - update ctrl_ad_diff.list, obcs_ad_diff.list
699      - remove balance of obcs controls from default
700      - fix index bug nobcs in ctrl_init
701      - fix dummy fields filen in ctrl_pack
702      - add dummy weights for obcs
703    o lsopt: comment out fort.94 output
704    o optim:
705      - remove unnecessary header files
706      - adjusted namelists
707      - add xerbla.F to Makefile
708    o exf:
709      - multiple modifications of exf_check_range
710      - unit change in exf_init_runoff from [m/year] to [m/s]
711    o mdsio:
712      - i/o-vector change debugLevel from debLevA to debLevB
713    
714    checkpoint56b_post
715    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
716      is called from DO_THE_MODEL_IO
717      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
718      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
719      - clean up PTRACERS_WRITE_TIMEAVE a little
720    o add another verification experiment that tests both the cfc-pkg and
721      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
722      reactive tendencies treated inline with regular timestepping
723    o testreport previously did a lousy job of comparing small numbers, so
724      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
725      implemented in the little c-progam tmp_cmpnum.c which is embedded in
726      testreport.
727    o ptracers_monitor: bug fix for MPI
728    
729    checkpoint56a_post
730    o GCHEM: finish reorganizating the package
731      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
732        (introduces another 3D-array for each passive tracer, but only if
733        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
734        gchemTendency is not needed because the timestep is done separately)
735      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
736      - GCHEM is now---more or less cleanly---separate from PTRACERS
737      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
738        so clear to me how that should be done in a general way.
739    o CFC: improve formatting of output in CFC_ATMOS
740    o PTRACERS:
741      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
742        that ALL experiments with ptracers enable can be checked. This makes
743        GCHEM_MONITOR obsolete.
744      - include a runtime parameter PTRACERS_monitorFreq that defaults to
745        monitorFreq
746      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
747    o add PTRACERS (PTR0[1-5]) to testreport output
748    o exf_check_range:
749      * default changed to .TRUE.
750      * will check values for niter0 if debLevA, every timestep if debLevB
751      * STOP in exf_check_range if 'out of range'
752      * range chosen generous to allow for potential extema
753      TBD: a version with stricter range
754           permitted range would be runtime parameters
755    o GMredi:
756      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
757      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
758      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
759    o GCHEM:
760      - move call to GCHEM_FORCING_SEP, so that it is now called before
761        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
762      - introduced a useGCHEM runtime flag and applied it everywhere.
763      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
764        this flag is now only visible within GCHEM-pkg routines.
765      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
766        be replaced by a 3D array that is computed before thermodynamics; for
767        this, the tracer ID iTracer had to be included into the parameter list
768        of ptracers_forcing
769      - set up forward_step to call gchem_forcing, that will replace
770        gchem_forcing_int in ptracers_forcing
771      - cleaning up
772    o small cleaning of exch2: remove files that are also in eesupp/src
773    
774    checkpoint56
775    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
776    o mnc: cleanup "full" files--fixes out-of-memory problem
777    o ECCO-GODAE
778      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
779      * fully merged and updated from SIO code
780        windstress sign change affects
781        - exf_inscal_[u/v]stress
782        - sign of xx_tau[u/v] adjustments
783        - signs in cost_scat
784      * ctrl_get_gen: avoid update of tau[u/v] for first few days
785      * natl_box_adjoint updated and compressed
786      * 2-level checkpoint switch added
787        (tested in EXP. 1 of natl_box_adjoint)
788      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
789    o SVD
790      * first complete, non-hacked version for SVD calculations
791      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
792        performed via direct access files admtlm_vector.it????
793        (via ctrl_[un]pack)
794      * optimcycle is used for ARPACK iteration counter
795        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
796      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
797        and add linear transforms where necessary
798      * controls are initial/final SST, SSS (can be extended; need to check
799        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
800    o mdsio: filename info to both stderr, stdout
801    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
802      from sign change
803    
804    checkpoint55j_post
805    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
806      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
807    o add consistent build directories and .cvsignore files to verification
808    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
809    o make all subroutines 30 or less characters in length for certain older
810      compilers to work (a thorough search only turns up two routines in
811      pkg/ptracers)
812    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
813      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
814    
815    checkpoint55i_post
816    o change arrays for total vertical diffusivity (2.D if explicit,
817      3.D if implicit) ; each ptracer uses its own background value.
818    o added mnc/NetCDF output capability to ocn_compon_interf
819      - added bits to verification/cpl_aim+ocn so that it can run on
820        ITRDA and other clusters without the mpirun "-wd" option
821    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
822      configuration
823    o give MNC the ability to create additional files rather than
824      exceeding a specified file size limit "MNC_MAX_FILESIZE"
825      - the default is just less than 2GB which is a practical limit
826        on many systems
827    o Compute the non-local term using either KPP vertical diffusivity (=default)
828       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
829    
830    checkpoint55h_post
831    o add verification test "vermix"
832    o remove all the *_ioinc flags and replace with the single global
833      outputTypesInclusive flag
834    o allow to set a vertical profile of vertical diffusivity for T & S
835    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
836    o useMNC moved from data.mnc to data.pkg
837    
838    checkpoint55g_post
839    o Renaming carbon AD experiments to comply with testreport conventions
840    o Updating adjoint of Held-Suarez hs94.1x64x5
841    o Fixing directives for non-ECCO forward_step, after ECCO directives
842      have been fixed to avoid recomp. of do_oceanic_phys
843      Works well for global_ocean.90x40x15,
844      but recomp. issue remains for carbon
845    o Updating adjoint output for natl_box_adjoint after
846      pkg/ecco has been modified (see taga c55d_post)
847    
848    checkpoint55f_post
849    o rename to timeave_init_fixed
850    
851    checkpoint55e_post
852    o some delicate re-shuffle of store directives to avoid one
853      extra call of do_oceanic_physics
854      affects ecco_the_main_loop.F, do_oceanic_physics.F
855      checkpoint_lev1_directives.h
856    o NB: this may break global_ocean adjoint temporarily,
857      but it is clear how to fix it. Will do later, need this now.
858    
859    checkpoint55d_post
860    o ECCO specific cost function terms (up-to-date with 1x1 runs)
861    o ecco_cost_weights is modified to 1x1 runs
862    o modifs to allow observations to be read in as
863      single file or yearly files
864    o enable to read exf forcing fields as either
865      single file or yearly files (flag useExfYearlyFields)
866    checkpoint55d_pre
867    
868    o switch between 2-level and 3-level checkpointing
869    o add ability of MNC to write local and "partial" (eg. 2D slices where
870      the full 3D field is never actually stored) arrays to NetCDF files
871      with the correct (that is, the complete multi-dimensional) set of
872      array indicies
873      - used in mom_vecinv() to write the diagFreq output
874      - tested (demonstrated) in verification/aim.5l_cs
875    o further mnc-ification
876      - add verification/lab_sea to the list with mnc setups
877      - fix undefined mnc v-names in cd_code
878      - add kpp to mnc output (both snapshot and timeave)
879    o non-hydrostatic code
880      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
881        in calc_gw.F
882      - defaults to viscAh
883      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
884        friction or Leith) in non-hydrostatic mode, as long as there is
885        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
886    o pkg/cost
887      extend simple cost functions to treat time mean quantities
888      (T,U,V) via cost_accumulate_state from cost_tile
889    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
890        be 2 times larger than the minimum size the advection scheme requires.
891        now get a perfect conservation of salt in advect_cs test-exp (updated)
892    o GGL90 (Gaspar's TKE mixed layer)
893      - add horizontal diffusion of TKE, requires exchanges in
894        do_fields_blocking_exchanges, horizontal diffusivity is zero by
895        default. In OPA there is no horizontal diffusion of TKE but the
896        mixing coefficients are computed from a horizontal average of TKE of
897        6 points or so. I think that diffusion has a little more physical
898        justification.
899      - clean up ggl90_calc in the hope of reducing memory usage (this hope
900        was in vain)
901      - mask tke-variable in ggl90_init
902    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
903    o fix biharmonic diffusion on CS-grid.
904    o more obcs stuff
905      - added obcs_external_fields_load as an alternative to the EXF-pkg option
906        for reading boundary values. This routine is called from
907        obcs_prescribe_read
908      - updated obcs_check
909      - changed sponge layer relaxation parameter units for days to seconds
910      - turned off sponge layer by default
911      - changed argument list of OBCS_CALC to myTime+deltaTclock
912      - fixed about 35 bugs in obcs_external_fields_load
913    
914    checkpoint55c_post
915    o obcs stuff
916      - new runtime flags useOBCSprescribe, useOBCSbalance
917      - re-arranged obcs_calc
918      - moved exf_getobcs to obcs_prescibe_read
919        obcs_prescibe_read is called after ORLANSKI stuff
920        and independent of it (executable can contain all).
921      - updated obcs_check
922      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
923        These may be necessary only if tangential velocities are
924        prescribed at OB, not sure, needs testing.
925    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
926      which simplifies the calls and passes the ifc check-bounds test
927    
928    checkpoint55b_post
929    o add a 2D scalar, Z location, exchange_2 routine.
930    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
931      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
932      affects advect_cs results (for the wrong reason): update output.txt
933    o use a more standard discretization for biharmonic viscosity ;
934     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
935      affects results of dome set-up: update output.txt
936    o fix gad_advection.F (CubedSphere part), back to version 1.23
937    o fix bug in mom_vi_del2uv.F (CubedSphere part).
938    
939    checkpoint55a_post
940    o merged code to
941      * prescribe/read time-dependent open boundaries
942        (works in conjunction with exf, cal)
943      * sponge layer code for open boundaries
944      * each boundary N/S/E/W now has its own CPP option
945        (healthy for the adjoint)
946    
947    checkpoint55
948    o up-to-date adjoint of previous breaks
949      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
950      - global_ocean_ebm: adjoint still needs fix (TLM ok)
951      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
952      - carbon: * remove tr1-related adjoint verification
953                * add ptracer as control variable
954    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
955      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
956    
957    checkpoint54f_post
958    o in verification/carbin/ remove experiment related to
959      ALLOW_PASSIVE_TRACER (array tr1 etc)
960      code_ad/ input_ad/ results_ad
961    
962    o add two new packages
963      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
964        + subject to optimization (memory)
965      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
966        + subject to reordering (many GOTOs in the original code)
967        + so far opps is called for every (i,j) point, and then operates in
968          the vertical; one may want to reorder the scheme in order operate in
969          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
970          fields)
971    o overhaul of IO so that we now have flags for MDSIO and/or MNC
972      - all verification tests compile and run with linux_ia32_g77
973      - defaults are compatible with current input files--nothing
974        should change if you were not previously using MNC
975      - MNC output has been added in numerous places (eg. timeave)
976        but there are still a few writes not yet do-able with MNC
977        (this is in progress)
978      - flags now allow for either/or/both use of MDSIO and MNC and
979        documentation will soon follow
980      - numerous small formatting cleanups for ProTeX
981    o add version info (via BUILD_INFO.h) to MNC and stdout
982    
983    checkpoint54e_post
984    o add two new packages
985      - pp81 (Packanowski and Philander, 1981), Richardson number and
986        stratification dependent mixing
987      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
988      - these scheme operate in a similar manner as KPP (without ghat, of
989        course), however there is only one diffusivity that is used for both
990        temperature and salinity (and passive tracers)ç
991    o add offline package
992    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
993      provided by Stephanie Dutkiewicz
994    o genmake2: add ability to search for C compilers and cleanup test output
995      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
996    
997    checkpoint54d_post
998    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
999    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
1000      leading to additional shift by 5 days each year of integration
1001       (i.e. leading to considerable offset over the years)
1002    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
1003    o start with no AB and no initial filtering (staggerTimeStep):
1004      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
1005    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
1006      (external loading & cpl import/export stay in forward_step.F)
1007    o update coupling interface to work with new staggerTimeStep
1008    o change MDSIO ptracers_pickup.
1009    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
1010    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
1011    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
1012    
1013    checkpoint54c_post
1014    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
1015      this affects (truncation error) output.txt of test-exp:
1016       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
1017    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
1018    o change Qnet to always be the net heat flux, (+upward).
1019      affects (truncation error) output of natl_box exp.: updated
1020    o define the max number of passive tracers in PTRACERS_SIZE.h
1021    o start to test mnc routinely in exp0
1022    o add sea-ice loading (sIceLoad) as a new forcing field.
1023    
1024    checkpoint54b_post
1025    o add testreport "-j JOBS" option for parallel builds (tested and pretty
1026       impressive on Altix and Opteron systems)
1027    o diagnostics can now write NetCDF files through the mnc package
1028    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
1029    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
1030    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
1031      affects (truncation error) output of lab_sea & natl_box exp.: updated
1032    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
1033    
1034    checkpoint54a_post
1035    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
1036    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
1037    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
1038    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
1039      + internal_wave (shift in writing cg2d_ini_res)
1040    checkpoint54a_pre
1041    
1042    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
1043      - modified verification/lab_sea and natl_box_adjoint accordingly
1044    
1045    checkpoint54
1046    checkpoint53g_post
1047    o prepare splitting of thermodynamics: store convect.counter in common block
1048    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
1049      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
1050    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
1051    o new parameter "nShapS": allow to treat differently S from T (nShapT)
1052    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
1053    o restore adjointability
1054    
1055    checkpoint53f_post
1056    o modifications that affect AIM experiment results (update output.txt):
1057      - no advection of S at top interface Nr (pkg/generic_advdiff)
1058      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
1059    o AIM pkg:
1060      - include stability function into surf.Flux derivative relative to Tsurf
1061      - calculate clear-sky radiation & surface temp. change (for diagnostics)
1062    
1063    checkpoint53e_post
1064    o merged cylindrical coord configuration
1065    o added rotating_tank experiment
1066    checkpoint53e_pre
1067    
1068    checkpoint53d_post
1069    o faulks upgraded: re-generate output.txt that have changed:
1070       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
1071    o Added Bryan and Lewis, 1979, vertical diffusivity profile
1072    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
1073    o added Sadourny discretization of Coriolis
1074      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
1075      - re-enabled use of omega3 (useAbsVorticity)
1076    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
1077      vector-invariant equations
1078      - note: does *NOT* yet use same variable visc. for no-slip BC's.
1079    o recoded the lateral boundary conditions for non-hydrostatic w, this time
1080      hopefully without new bugs
1081      - still to do: biharmonic friction for non-hydrostatic w
1082    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
1083    o regenerated output for global_ocean_ebm (using -ieee)
1084    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
1085      of mom_common/
1086      - simple re-arrangement of instructions within computing loop
1087    checkpoint53d_pre
1088    
1089    checkpoint53c_post
1090    o new version of coupler for AIM+thSIce and Ocean models
1091     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
1092     - land: change Evaporation of snow
1093     - aim with thSIce: fix bug in snow-precip.
1094    o changes to calc_gw.F
1095     - bug fix for w^2 term near the bottom boundary
1096     - (hopefully) improve the lateral slip boundary condtions for use with
1097        partial/looped cells
1098      - because the bug fix changes two verification experiments anyway (exp5
1099        and plume on slope), change the lateral boundary condition from half slip
1100        to the value of no_slip_sides
1101    o ebm package wasnt quite up to the parallel task. Fixed that.
1102    o Adjoint of EBM package + verification
1103      * TLM OK
1104      * ADM not sufficient accuracy yet (needs further testing)
1105    
1106    checkpoint53b_post
1107    o Commiting new energy balance model to repository
1108      * package is pkg/ebm
1109      * verif. is verification/global_ocean_ebm
1110      * references are in ebm_driver.F
1111    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1112    C        Global thermohaline circulation. Part I:
1113    C        Sensitivity to atmospheric moisture transport.
1114    C        J. Climate 12(1), 71-82
1115    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1116    C        Global thermohaline circulation. Part II:
1117    C        Sensitivity with interactive transport.
1118    C        J. Climate 12(1), 83-91
1119    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
1120    C        Destabilization of the thermohaline circulation
1121    C        by atmospheric eddy transports.
1122    C        J. Climate 7(12), 1870-1882
1123    o Will need long integration testing.
1124    checkpoint53b_pre
1125    
1126    o created pkg/mom_common in preparation for variable viscosity code
1127    o renamed and split ini_mnc_io
1128    o pkg/land: only liquid water can diffuse or run-off
1129    o AIM using land: soil wetness availability account for snow
1130    o added printMapIncludesZeros to EEPARMS namelist
1131    
1132    checkpoint53a_post
1133    o restore TAMC compatiility for exf_constants.h
1134      (no usage of _d in .h)
1135    o Additional storing in KPP in an attempt to fix
1136      TAMC problem with adjoint of KPP code.
1137      (no success...)
1138      Identical code works fine with TAF.
1139    o Fixed verification/natl_box_adjoint experiments.
1140      Initial conditions for Experiments 4 and 5 are now
1141      set to "SEAICE_initialHEFF=0", which is more reasonable,
1142      and hence gives results closer to that of Experiment 2.
1143      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
1144    
1145    checkpoint53
1146    o stable checkpoint with up to date adjoint
1147      TLM tests only run for 1st grdchk at the moment. Its unclear if
1148      this is a code problem or a problem with resetting code for g_
1149      variables that is being autogenerated wrong.
1150      Otherwise:
1151       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
1152       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
1153         are both still in chaos following their security messes.
1154    
1155    checkpoint52n_post
1156    o various build (mostly genmake2) changes including:
1157      - ability to build/run more easily within Cygwin and MacOS X
1158      - more complicated Makefiles with a stronger dependence on Gnu Make
1159    o pkg/seaice modifications
1160      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
1161        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
1162        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
1163      - changed proxy for geostrophic velocity and updated
1164        verification/lab_sea/results/* accordingly
1165      - removed ADI dynamic solver from pkg/seaice
1166      - replaced all occurrences of 1/CSTICE or 1/CSUICE
1167        they caused a segmentation fault under certain circumstances
1168      - removed unused field WATR
1169    o bug fix in exf-package:
1170      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
1171         now reflect that.
1172    o small fixes in the cal-package:
1173      - set reference date to first of January for the 'model'-calendar
1174      - failing of cal_CheckDate in cal_FullDate now actually results in a
1175        warning
1176    o small modifications in exf-package to increase flexibility:
1177      - change climtempfreeze from a constant to a runtime parameter that
1178        is specified in data.exf_clim (default = -1.9)
1179      - introduce runtime parameter windstressmax (default = 2.0) that is
1180        specified in data.exf
1181    o fix in pkg/thsice:
1182      - update Evap (Tsf changes) to be consistent with Latent heat flux
1183      - maintain snow precipitation unchanged (even if Tsf >=0).
1184     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
1185    
1186    checkpoint52m_post
1187    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
1188      this does not change any of the results, because myIter=0 in swfrac always
1189      lead to jwtype=2 (the default anyway), but the call makes little sense
1190      as a default
1191    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
1192    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
1193      atmospheric model (AIM) to use it ; add a "slab ocean" component.
1194    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
1195    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
1196    o extending useSingleCpuIO option to work with new exch2 I/O format
1197      - old-style, missing-tile I/O is still accessible by defining CPP
1198        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
1199    o monitor package can write to NetCDF files and/or STDOUT
1200    o fix re-definition bug in MNC_GRID_INIT_ALL()
1201    o doc/api_reference added
1202      - a framework for building an API Reference Manual using all
1203        the "protex" comments embedded in the code
1204      - see pkg/generic_advdiff, pkg/mnc for examples
1205    o MNC:
1206      - make myThid the last argument for all subroutines
1207      - new default for the grid files: NO halos
1208      - add useMNC and other run-time flags
1209      - separate per-file-group handling of the unlimited dimension
1210      - early initialization of MNC w/ flags read at the eeboot stage
1211        and lookup tables set in initialize_fixed
1212      - write all MNC output to a freshly-created directory
1213    o thermodynamics sea-ice (thsice) is now tested with testreport.
1214    o test exp. advect_cs: use the standard cs32 grid ; update output.
1215    o Added functionality to grdchk:
1216      pick global i,j,k position (or nearest wet) where to perform check.
1217    
1218    checkpoint52l_post
1219    o new land formulation:
1220      a) use ground enthalpy as prognostic variable to ensure exact
1221         energy conservation.
1222      b) account for water temperature and for latent heat of freezing
1223         in all processes (rain, run-off, ground storage)
1224      c) compute surface and ground temperature implicitly.
1225    o aim_v23 modification for new land model:
1226      a) Treat separately land / ocean / sea-ice surface fluxes
1227         to allow implicit computation of land & sea-ice surface temp.
1228      b) add snow precipitation.
1229    checkpoint52l_pre
1230    
1231    o fix problem (when 1 tile is empty) in min/max monitor.
1232    o fix bug in timeAve (u,vZetatave in common block)
1233    o no restoring terms under ice for pkg/seaice
1234    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
1235    o bug fix for pkg/seaice pickups
1236    o change MNC call locations and add coordinate attributes
1237    o mask vorticity at the corner ; affects global_ocean.cs output
1238    o fix ini_curvilinear_grid ; test CS experiments with mpi
1239    o aim.5l_cs: modify sea-ice fraction input file ; update output
1240    o exf: Adding simple range check routine for exf fields after read
1241    
1242    checkpoint52k_post
1243    o removed top-level directory "diags"
1244      - we migrated these functions to pkg/timeave a long time ago
1245    o fixed bug introduced in pkg/monitor
1246    o accuracy ctrlprec = 32 insuffient for gradient checks using
1247      averaged fields (I/O via cost_averages)
1248      -> use ctrl.h in active_file*.F to control I/O precision.
1249    o paramter list of CALL ADTHE_MAIN_LOOP
1250    o added initial do_the_model_io to ecco
1251    o set all ...Freq to zero after cost_final
1252      taveFreq, dumpFreq, pChkptFreq
1253    o MAIN and ECCO differentiability restored
1254    
1255    checkpoint52j_post
1256    o fix nchklev in tamc.h for global_ocean...
1257    o Bringing flow and store directives up-to-date
1258    o Really weird thing!
1259      call do_the_model_io from the_main_loop with parameters
1260      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
1261      TAF places a faulty re-call of initialise_varia
1262      after cost_final call which should not be there!
1263    checkpoint52j_pre
1264    
1265    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
1266      error messages
1267    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
1268    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
1269      debug output
1270    o modfied mdsio_writefield.F to handle non-global files under exch2
1271    o update AIM Cubed-Sphere exp (aim.5l_cs):
1272      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
1273    o update AIM Equatorial Channel exp:
1274      use standard aim_v23 pkg and change the SST fields to be more realistic.
1275    o globalFile now works with exch2
1276    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
1277      mon_vort3.F to make exch2 friendly with >1 tile per cube face
1278    o limit timeave output for hi-res integrations
1279    
1280    checkpoint52i_post
1281    o removed CPP_EEOPTIONS.h from verification/*/code
1282    o updated the tiling for global_ocean_pressure
1283    checkpoint52i_pre
1284    
1285    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
1286      the old pkg/aim).
1287    
1288    checkpoint52h_pre
1289    o shortened offending lines in exch2_send_rx?.template
1290    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
1291    o genmake2: add build & execute test for NetCDF code
1292    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
1293      old grid files, moved CPP_EEMACROS.h to pkg/exch2
1294    o added useSingleCPUIO flag to monitor.F and mon_out.F
1295    o added temporary hack for sea-ice dynamics on the cube:
1296      metric terms are ignored and it is assumed that
1297      there is no sea-ice on cube faces 1, 2, 4, and 5.
1298    
1299    checkpoint52f_post
1300    o added exch2 cube routines to pkg/exch2
1301    o modified hs94.cs-32x32x5 to use it
1302    o added new grid files to hs94.cs-32x32x5
1303    checkpoint52f_pre
1304    
1305    checkpoint52e_post
1306    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
1307      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
1308    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
1309      to work with implicit vertical advection and AB ;
1310    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
1311    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
1312     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
1313    checkpoint52e_pre
1314    
1315    o fix bug in impldiff when Nr=1 or Nr=2.
1316    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
1317    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
1318    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
1319      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
1320    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
1321    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
1322    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
1323    
1324    checkpoint52d_post
1325    o re-tiled many expts to allow comparison in multi-processor mode
1326      - updated output accordingly
1327      - changed hs94.128x64x5 to use intial T from file rather than use the
1328        random number generator
1329    o add infrastructure in model routines for fizhi and gridalt packages
1330    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
1331    o changes to permit hi-res, cubed-sphere, configuration
1332      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
1333      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
1334      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
1335        of surface winds for the cube
1336      (A verification experiment, based on global_ocean.cs32x15, but with
1337       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
1338       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
1339       complete with example surface forcing files and matlab scripts to look
1340       at the output and compare it with that of global_ocean.cs32x15.)
1341    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
1342       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
1343       to conform to the common rule.
1344    o check-in the first version of the coupler + interfaces for multi-components
1345       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
1346       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
1347       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
1348       - ocean and atmos. share the same horizontal grid (no interpolation).
1349       - exchanges between component and coupler is done in forward_step
1350    o new verification experiment, cpl_aim+ocn:
1351       coupled ocean - AIM atmosphere on cs32 grid.
1352    
1353    checkpoint52d_pre
1354    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
1355    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
1356    
1357    checkpoint52c_post
1358    o Fixing OPTIONS files for use of exf:
1359      - ALLOW_ECCO not needed
1360      - ECCO_CPPOPTIONS.h should not be included from
1361        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
1362        as has been the case in the past
1363      - All cal/exf related options are currently set in
1364        single header file. Should remain so until we
1365        agree on a consistent new policy.
1366    o Removed all CPP options for cal package.
1367      cal has no more CPP options.
1368    o modified STOREs in GAD_ADVECTION
1369    o corrected key comp. for passkey
1370    
1371    checkpoint52b_post
1372    o new version: "thsice" of thermodynamic sea-ice pkg:
1373     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
1374     - modify fluxes but do not change theta directly;
1375     - light cleaning of bulk_force pkg (still needed with thsice).
1376     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
1377       + output_thsice.txt to test thsice & bulk_force pkgs.
1378    o put back grid & coriolis monitor output.
1379    checkpoint52b_pre
1380    
1381    o call "do_the_model_io" at the beginning (=> dump initial state)
1382    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
1383    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
1384      (need info on NUMBER_OF_PTRACERS)
1385    o missing PTRACERS headers in some routines
1386    o default tamc.h in pkg/autodiff supposed to crash
1387      to ensure proper customization
1388    
1389    checkpoint52a_post
1390    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
1391      - moved surfaceTendencyTice from pkg/seaice to main code
1392      - subroutine FREEZE_SURFACE now limits only surface temperature
1393        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
1394        => new output.txt for global_ocean.cs32x15 & global_with_exf
1395      - keep the old version of FREEZE for backward compatibility;
1396        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
1397      - corresponding modifs for TAF directives
1398    o added surface flux output variables to TIMEAVE_STATVARS
1399    o time-averaged output for pkg/ptracers
1400    o fix problem with ECCO-related divided adjoint
1401      snapshot file was missing some ad-variables,
1402      but no warning issued by TAF
1403    
1404    checkpoint52a_pre
1405    o some bug fixes for #undef REAL4_IS_SLOW
1406    
1407    checkpoint52 = ecco_c52_e35
1408    o after testing adjoints of checkpoint51u_post
1409    
1410    checkpoint51u_post
1411    o this is the post-merge tag of the ecco-branch
1412      (needs another clean checkout and re-testing)
1413    o various natl_box_adjoint configs and results
1414      but no input fields
1415    o obcs adjoint not yet merged!
1416    o adding ECCO global 1x1 and 2x2 degree configs
1417    o updated/extended some store directives for seaice
1418    o pkg/ecco now containes ecco-specific part of cost function
1419    o top level routines the_main_loop, forward_step
1420      supersede those in model/src/
1421      previous input data.cost now in data.ecco
1422      (new namelist ecco_cost_nml)
1423    o in ctrl/ cleaned some cross-dependencies and updated CPP options
1424    
1425    checkpoint51t_post
1426    o this is the pre-merge tag of the ecco-branch
1427    
1428    checkpoint51s_post
1429    o cleanup: removed various obsolete #define-s
1430    o pkg/grdchk
1431      - renamed 'ph-grd 3' to 'grad-res'
1432      - merged from ecco-branch
1433        (remaining bug fixes for obcs gradient checks)
1434      - additional high-precision output for testreport
1435        (grep for 'precision_grdchk_result')
1436    
1437    checkpoint51r_post
1438    o cleaned up or removed CPP_OPTIONS.h files
1439    o updated results for some of the tests to reflect the new
1440      optfiles (-ieee: -O0 instead of -O3)
1441    
1442    checkpoint51q_post
1443    o cd_code:
1444      - moved cd_scheme.F -> cd_code_scheme.F
1445      - separate read_checkpoint from cd_code_ini_vars.F
1446      - separated cd_code part from write_checkpoint
1447      - updated AD_SOURCE, generated .flow
1448      - added CD_CODE_VARS.h to the_main_loop
1449      - Moving cd_code specific store dir.s to pkg/cd_code
1450    o ctrl package totally restructured
1451      - pack/unpack now optional and decoupled from
1452        xx_/adxx_ I/O
1453      - ctrl_pack/unpack cleaned
1454        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
1455      - confined inclusion of AD_CONFIG.h to where necessary.
1456    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
1457    
1458    checkpoint51p_post
1459  o create initial cd_code package  o create initial cd_code package
1460      - WARNING: the initialization of fields within packages
1461        is broken because INI_FIELDS (where READ_CHECKPOINT is
1462        called) is called *before* PACKAGES_INIT_VARIABLES.
1463        This seems to be backwards since
1464        1) its important to initially zero the entire field including
1465           the "halo" region
1466        2) zeroing needs to be done *before* reading pickup info
1467           and the pickup call might or might not happen in any
1468           particular run
1469      - this needs an overhaul for R2
1470  o cleanup verification/*/code/GMREDI_OPTIONS.h  o cleanup verification/*/code/GMREDI_OPTIONS.h
1471  o cleanup testreport  o cleanup testreport
1472    

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