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revision 1.1370 by jmc, Thu Jan 27 20:52:10 2011 UTC revision 1.1570 by jmc, Thu Jan 5 21:26:17 2012 UTC
# Line 4  $Name$ Line 4  $Name$
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    o pkg/exf (interpolation):
8      - extended input field (2 rows) near the N & S poles:
9        * fill in with the symetric value (when even Nb of data in longitude)
10        * add average value at the poles only for scalar quantities ; for vector
11          component interpolation, skip the averaging and keep duplicated values,
12          unless the 2 components have same location (uvInterp=T) in which case
13          interpolate the 2 components together using S/R EXF_INTERP_UV.
14      - new S/R EXF_INTERP_UV to interpolate the 2 components of a vector field
15        together: this allows to account properly for local orientation when
16        averaging at N & S pole.
17      - add CPP option EXF_USE_OLD_INTERP_POLE to recover old results regarding
18        exf-interpolation near N & S poles. Undef by default.
19      - add debug check/print on 1rst iter if debugLevel >=2.
20    o pkg/exf:
21      - change masking flags definition (no longer "parameter"), put them in
22        common block and set them in S/R EXF_INIT_FIXED.
23      - change recognized masking flag from s,u,v to c,w,s since the mask
24        to use (maskC,W,S) depends on position on model grid and has little to
25        do with scalar/vector difference; fix masking if using P-coordinates.
26      - fix masking of wind-stress (was wrong if interpolated or read on A-grid)
27        and update results of exp. global_with_exf (x2).
28      - fix setting of zenith-angle table when SHORTWAVE_HEATING is undef.
29    o pkg/obcs
30      - S/R obcs_calc_stevens: fix a small bug (gammat -> gammas where appropriate)
31    o pkg/exf (interpolation):
32      - assume periodicity in X only if input field cover full longitude range.
33      - improve search for lat. index (supposed to be faster, in ~log2(ny) steps,
34        and should vectorise).
35      - fix input lat of the 2 added row (in case we provide N.pole data).
36    
37    checkpoint63h (2011/12/30)
38    o pkg/seaice:
39      - change declaration of UVM from _RL to _RS in order to get B-grid
40        uIce,vIce monitor when _RS = real*4
41    o pkg/offline:
42      - new S/R OFFLINE_RESET_PARMS for resetting main-model params (switch off flags);
43      - compute vertical velocity if not read from file (switch on exactConserv
44        & staggerTimeStep);
45      - fix output of ptracer monitor iter & time for default PTRACERS_monitorFreq.
46    o verification:
47      - update grid-files (in tutorial_held_suarez_cs/input and fizhi-cs-32x32x40/input)
48        with grid-angle generated using "utils/matlab/cs_grid/cubeCalcAngle.m":
49        fix Pb in yG definition @ 2 missing corners (previously yG was averaged);
50      - update output of exp. global_ocean.cs32x15.viscA4 after changing
51        grid-file angles (used here for coriolis-3d);
52      - remove (or gzip) few files not needed to run fizhi-cs experiments.
53    o pkg/exf (vector interpolation):
54      - rotate vector component toward local grid-axis orientation using grid-angles
55        (stored in GRID.h) instead of locally computed rotation angle; keep old code
56        available with exf option EXF_USE_OLD_VEC_ROTATION (undef by default).
57    o pkg/seaice:
58      - allow to compile with exf options ALLOW_ATM_TEMP or ALLOW_DOWNWARD_RADIATION
59        undefined. Fix and remove the stop when ALLOW_RUNOFF is undefined.
60    o pkg/PKG_OPTIONS.h files:
61      - move #include "CPP_OPTIONS.h" just after #include "PACKAGES_CONFIG.h",
62        outside of the #ifdef ALLOW_THISPKG / #endif block.
63      - update verification/*/code/PKG_OPTIONS.h files.
64    o add a verification experiment (offline_exf_seaice/input.seaice) that test
65      the B-grid LSOR solver
66    o pkg/seaice: sort out emissivity and long wave radiation step 2:
67      - add emissivity for snow and ice as new run-time parameters
68        (unfortunately) that default to the corresponding exf values; this
69        changes results in most verification experiments so that for backward
70        compatibility these parameter have to be set explicitly to inconsistent
71        values (ugly);
72      - the exf-flag EXF_LWDOWN_WITH_EMISSIVITY then gets rid off the hard-wired
73        emissivities of 0.97 associated with lwdownloc in S/R seaice_solve4temp
74        until we agree how to handle this bug properly
75    o pkg/exf (interpolation):
76      - add a set of run-time param ({inputfield}_interpMethod), one for
77        each interpolated input field, to select the interpolation method
78        with a value of zero switching off the interpolation;
79      - print interpolation parameters to standard output;
80      - refine exf_check.F accordingly ; stop if USE_NO_INTERP_RUNOFF is defined
81        (to use instead runoff_interpMethod=0 in data.exf).
82      - simplify default setting of interpolation parameters (for all fields,
83        set position to match model grid cell-center position, leading to trivial
84        interpolation in case of regular Lat-Lon grid) and fix for the case of
85        non-uniform delY.
86    o pkg/exf/exf_radiation.F: add the factor ocean_emissivity to lwdown, for
87       within #ifdef EXF_LWDOWN_WITH_EMISSIVITY/#endif. Unless ocean_emissivity=1.
88       this factor is absolutely required, because the lw exitance (= out-going
89       long wave radiation) is emissivity*stefanBoltzmann*T^4 + rho*lwdown,
90       where the reflectivity rho = 1-emissivity for conservation reasons. Once
91       this is established, we can remove the CPP-Flag (if we want to).
92    o pkg/seaice:
93      - qualify a stop statement in S/R seaice_check: EXF_READ_EVAP and
94        ALLOW_BULKFORMULAE are only required if SEAICE_EXTERNAL_FLUXES is defined
95      - sort out emissivity and long wave radiation, step 1: make SEAICE_emissivity
96        what the name implies (and not emissivity*BoltzmannConstant), this means
97        the old default value of 5.5e-8 now means
98        5.5e-8/5.670e-8 = 0.97001763668430343479 as ocean_emissivity in
99        S/R exf_readparms
100      - FV-discretization of the B-grid LSOR solver, turn on with
101        SEAICE_LSRBNEW. This new solver also involves a slight re-organization
102        of the calling routine dynsolver, so that B and C-grid code look a
103        little more alike.
104      - fix index bugs in ostres.F (B-grid code)
105    o pkg/seaice/seaice_ocean_budget.F: change (unused) code to make it look better
106    o pkg/seaice/seaice_readparms.F: make ocean_emissivity*stefanBoltzmann the
107      default for SEAICE_emissivity, if useEXF; requires setting a wrong
108      parameter value in global_ocean.cs32x15/input.seaice/data.seaice for
109      backward compatiblity
110    o model/src: use sigmaR in calc_ivdc
111    
112    checkpoint63g (2011/12/16)
113    o pkg/seaice/seaice_growth.F:
114      fix heat conservation of the coupled ocean-seaice system.
115      when SEAICE_HEAT_CONSERV_FIX is defined, the mismatch of
116      solid vs liquid water treatment is resolved via QNET.
117    o pkg/seaice/seaice_growth.F:
118      add missing term for sublimation in saltFlux, which was breaking conservation.
119    o pkg/seaice/seaice_model.F:
120      Remove this patholigical case treatment in evolution branch,
121      where it is un-necessary and breaks conservation.
122      Update global_ocean.cs32x15/results accordingly for
123      output.seaice.txt output_adm.seaice.txt and output_adm.seaice_dynmix.txt
124    o model/src:
125      useRealFreshWaterFlux: remove masking of EmPmP (using maskInC) in
126      external_forcing_surf.F and apply mask directly in S/R SOLVE_FOR_PRESSURE.
127    o pkg/obcs:
128      modify Stevens boundary conditions so that S/R obcs_calc_stevens computes
129      tendency for temperature and salinity that is then applied to update
130      theta and salt in S/R obcs_apply_ts; this requires proper masking of all
131      horizontal advection and diffusion contributions on the boundary (in
132      S/Rs gad_advection, gad_calc_rhs, gmredi_rtransport, gmredi_calc_diff), and
133      removing the mask in S/R timestep_tracer. The advantage of this approach is
134      that the updated tracer values include contributions from the surface
135      forcing and vertical diffusion.
136      This modification changes exp4.stevens because of vertical diffusion.
137    o model/src:
138      change non-curvilinear grid setting to also work with exch2 + blank tiles:
139      - move delX,delY to new header file (SET_GRID.h) and adjust length to 1rst
140        face dimensions.
141      - new S/R INI_LOCAL_GRID to define model tile-local grid (using same units
142        as delX,delY) and called from S/R INI_CARTESIAN_GRID, INI_CYLINDER_GRID
143        and INI_SPHERICAL_POLAR_GRID.
144      change test-experiment global_ocean.90x40x15:
145      - split the domain in many more tiles (9x4 tiles of 10x10 each);
146      - switch to exch2 and remove 1 blank-tile (but only for MPI test).
147      - update results of both test (std & dwnslp).
148    o pkg/diagnostics/diagstat_calc.F: fix problem with non-initialised halos in
149       tmp-fields for TARGET_NEC_SX at the cost of extra loops and less vectorisation
150    o model/src:
151      - take sigma-coords related code out of update_etah.F into new S/R UPDATE_ETAWS
152        and fix initialisation when using sigma-coords.
153    o model/src:
154     - improve Gael's changes from Jan 14, 2011 "addition of an 'update' of hfacc etc.
155       to their current value at the beginning of forward_step.F": add a new run-time
156       switch "doResetHFactors" (default=false) and use it to do (or not) the resetting.
157     - set doResetHFactors=T in the following test exp:
158        global_ocean.90x40x15/input (rStar) & input.dwnslp (linFS),
159        global_ocean.cs32x15/input.seaice (rStar), hs94.cs-32x32x5/input.impIGW (linFS)
160        and tutorial_global_oce_in_p (nonLinFS in p)
161    o pkg/ecco
162      - added IES cost term
163    o verification/advect_xz
164      - scale down the depth by 1/100 (from 200 km to just 2.km)
165      - add secondary test using divergent flow, r-star and implicit vertical advection.
166      - add note (check_conserve_TS.txt) and matlab script to check global
167        conservation of T & S with NonLin-FreeSurf and Adams-Bashforth.
168    o pkg/rbcs:
169      - add missing relaxUFile & relaxVFile in namelist (in rbcs_readparms.F).
170    o pkg/obcs (Stevens BCs):
171      - fix various problems in the phase speed computations of the Stevens
172        boundary conditions:
173        - sign error for western and southern boundaries,
174        - time tendencies were underestimated by factor of dTracerLev and some just
175          zero (for multidim advection schemes) -> now estimate time tendencies
176          from difference between previous (n) time level and the one before (n-1);
177          this requires storing a field per tracer per boundary, also in the pickup
178          files.
179        - replace deltaTmom in cflMer/Zon computation with dTracerLev
180        - set default phase velocity to cflMer/Zon
181      - update verification experiment exp4.stevens
182    o pkg/generic_advdiff (implicit_r):
183      - fix implicit vertical advection conservation with AB and/or NonLin-FreeSurf
184        (remove Tr*d/dz(w) in gad_implicit_r.F and add it in gad_calc_rhs.F);
185      - fix implicit vertical diffusion or advection with NonLin FreeSurf
186        (was using current recip_hFacC instead of future recip_hFacC): set future
187        recip_hFac in thermodynamics.F and pass & use it in all vertical implicit
188        solver S/R ;
189      - fill diagnostics of vertical advective fluxes (computed from tendency)
190        when using implicit vert. advection;
191      - update output of exp that uses NonLin-FreeSurf & implicit vertical diffusion:
192         global_ocean.90x40x15 (fwd+AD), global_ocean.cs32x15 (4 fwd +4 AD),
193         tutorial_global_oce_in_p (fwd), tutorial_tracer_adjsens (AD)
194         and cpl_aim+ocn (used in ocean); to be fixed: bottom_ctrl_5x5.
195    o pkg/diagnostics:
196      - add diags for T & S tendency which goes through Adams-Bashforth.
197    
198    checkpoint63f (2011/11/30)
199    o pkg/obcs/obcs_calc_stevens.F:
200      - join some loops to reduce number of if-statements
201      - fix a bug in code for northern and southern boundaries.
202    o pkg/seaice/seaice_init_varia.F
203      - undo resetting UVM=0 that has slipped in unnoticed in r1.49 and
204        caused zero ice-velocities for the B-grid code
205    o pkg/seaice/seaice_init_fixed.F
206      - fix a bug in the initialisation of the second metric terms
207        k2AtC and k2AtZ: k2AtC was set to the value of k2AtZ and k2AtZ was 0.
208      - this affects all seaice configurations with useCurviLinearGrid = .true.
209        and SEAICEuseDynamics = .true. (default) and SEAICEuseMetricTerms
210        = .true. (default)
211      - the only verification experiment affected is global_ocean.cs32x15:
212        icedyn, seaice, and seaice_dynmix (AD)
213    o pkg/thsice/thsice_diagnostics_state.F
214      - only for TARGET_NEC_SX: initialise all of tmpFld, so that overlap does
215        not contain garbage that can lead to surprises in diagstats_calc.F
216    o model/src:
217      - move bi,bj loops inside INTEGR_CONTINUITY ;
218      - call INTEGR_CONTINUITY directly from forward_step.F
219        (previously called from momentum_correction_step.F)
220      - call UPDATE_ETAH from integr_continuity.F and update initialise_varia.F,
221        forward_step.F and pkg/ecco/the_main_loop.F
222    o model/src/do_oceanic_phys.F:
223      - reset addMass to zero only if useICEFRONT ;
224      - separated k-loop for rhoInSitu calculation ;
225      - add 2 diagnostics for wVel*delta^k(Rho) at constant pressure (= WdRHO_P)
226        and at constant T,S (= WdRHOdP);
227      NOTE: change diagnostics WRHOMASS : this is now simply the Vertical transport
228        of In-Situ Density (Anomaly) (=wVel*rho^bar-k) (previously was Vertical
229        transport of locally-referenced potential density);
230        to recover old diag: (WRHOMASS)_old = (WRHOMASS)_new -1/2 * (WdRHOdP)
231    o gluemnc:
232      - replace ncrcat with ncks when adding variables to *.glob.nc
233      - change the way variables without record dimensions are handled so that
234        files that have variables with and without record variables can be glued:
235        add a record dimension with a new unique name to be able to differentiate
236        between variable with and without a-prior record dimensions. Remove
237        this record dimension before adding the variable to the *.glob.nc file.
238        This procedure automatically works also for grid.*.nc files that do not
239        have any record dimension.
240    o verification/cpl_aim+ocn:
241      - generate new reference output on baudelaire (gfortran, mpich2) (previously
242        from old aces-grid cluster, ao + ifort) and update 'run_cpl_test' script.
243    o pkg/obcs/obcs_calc_stevens.F:
244      - add code for northern and southern boundaries.
245      - reorder some loops to save some operations and so that drFBar can be scalar
246    o model/src:
247      - re-arrange extrapolation calculation in Adams-Bashforth S/R (affects machine
248        truncation) and add diagnostics for Adams-Bashforth tendency increment.
249      - update test-exp. AD output:
250        1D_ocean_ice_column, bottom_ctrl_5x5, lab_sea.noseaicedyn, obcs_ctrl;
251      and FWD output: exp4 (x3), fizhi-cs-32x32x40, fizhi-cs-aqualev20,
252        front_relax (x3), global_ocean.90x40x15 (x2), global_ocean.cs32x15 (x5),
253        global_ocean_ebm, ideal_2D_oce, internal_wave, isomip (x3), lab_sea (x4),
254        matrix_example, MLAdjust (x5), natl_box (x2), tutorial_advection_in_gyre,
255        tutorial_global_oce_in_p, tutorial_global_oce_latlon and
256        tutorial_plume_on_slope.
257    o pkg/diagnostics/diagstats_calc.F: add special code for TARGET_NEC_SX
258      that vectorises. This code uses 3 extra 2D fields, F90 array assignments
259      and F90 intrinsic routines SUM, MINVAL, MAXVAL, but since TARGET_NEC_SX
260      does not even come with an F77 compiler anymore, this should not be
261      a limitation
262    
263    checkpoint63e (2011/11/06)
264    o pkg/seaice adjoint of LSR:
265      - substantially rework STORE dirs.
266      - add new flag SEAICE_LSR_ADJOINT_ITER and parameter SOLV_MAX_FIXED
267        this flag will do SOLV_MAX_ITERS but only store SOLV_MAX_FIXED fields
268        and only perform SOLV_MAX_FIXED adjoint iters.
269        If flag SEAICE_LSR_ADJOINT_ITER is undef-ined, the store in the iteration
270        always goes to same record, meaning that the last forward field will be
271        the one used in the adjoint - an approximation.
272      - now produces non-zero LSR-related gradients, and acceptable gradients for
273        An's zonal (x-z) test case (to be checked in)
274      - lab_sea: produces acceptable gradients for lab_sea with forward/backward LSR
275        (but these are screwed up by the thermodynamics in the first place);
276        reduce from 4 to 3 timesteps to avoid t.d. issue as temporary solution;
277        output_adm.txt also reflects changes to seaice_lsr
278      - global_ocean.cs32x15:
279        * the "default" input_ad.seaice has been re-defined to always exclude dynamics
280          (output_adm.seaice.txt was updated)
281        * new input_ad.seaice_dynmix tests a forward LSR / backward free-drift
282          (output_adm.seaice_dynmix.txt)
283    o test-exp. exp4+stevens:
284      - switch off pTracers and nonHydrostatic (restart problems with NH); update output
285    o pkg/seaice (lsr solver):
286      - put coriolis term into FORCEX,Y (as in seaice_evp.F; previously in rhsU,V only);
287        update output (change truncation) of FWD test exp lab_sea & global_ocean.cs32x15
288      - fix SEAICEuseFREEDRIFT for new OBCS version (ndef OBCS_UVICE_OLD)
289      - new parameter "LSR_mixIniGuess" allows (if=2,4) to mix free-drift solution
290        into initial guess for linearised solver; use weight ~ (1/err)^2,4.
291      - compute (with new S/R) and print initial (+ free-driff sol. if available)
292        and final residual of linearised system.
293    o pkg/pp81: add diagnostics for vertical eddy viscosity and diffusivity
294      (requires new subroutines pp81_init_fixed.F/pp81_diagnostics_init.F)
295    o pkg/obcs: Stevens BCs (still only for east and west)
296      - fix Stevens BCs by using intermediate velocities of previous
297        time step as "baroclinic" contribution rather velocity of one grid cell
298        inside the boundaries; more consistent but makes the entire treatment
299        more complicated, requires new pickup files and two new S/Rs:
300        obcs_copy_uv_n and obcs_save_uv_n
301        keep old version with flag OBCS_STEVENS_USE_INTERIOR_VELOCITY
302        (undefined by default)
303      - silently move computation of some grid factors into separate loops to
304        save some recomputations
305      - add a hack for non-linear free surface
306      - add a verification experiment to exp4 that tests this code
307    o make gluemnc/xplodemnc work with (moron) non-GNU shell tools
308    
309    checkpoint63d (2011/10/25)
310    o pkg/obcs + seaice-dynamics:
311      - new implementation calls OBCS_APPLY_UVICE (in seaice_dynsolver.F) before
312        solving for uIce,vIce and prevent SEAICE_LSR or SEAICE_EVP to modify OB
313        values (consistent with an implicit method).
314      - add option OBCS_UVICE_OLD (in OBCS_OPTIONS.h, defined by default) to
315        return to older implementation (same results as before); note that none of
316        the "experimental" OBCS_SEAICE options are implemented in the new version.
317      - switch test exp. seaice_obcs to use new version (update output).
318    o pkg/seaice:
319      - add few stop (B-grid & CS-exch, B-grid & obcs, AUTODIFF & SEAICE_maskRHS)
320      - add parenthesis in Water-Ice drag calculations (evp & lsr);
321      - in seaice_lsr.F, simplify and fix AA3 setting in case sNx or sNy=1;
322        and fix case SEAICE_waterDrag=0 (but unstable if no or little seaice)
323      - update output of test exp lab_sea that uses evp or lsr (fwd+ad)
324        and global_ocean.cs32x15 (icedyn & seaice fwd+ad).
325    o pkg/layers:
326      - Include potential density as new coordinate (Thanks to David Munday)
327    o pkg/dic:
328      - Remove subroutine CALC_PCO2_APPROX_CO3 from carbon_chem.F and add
329        carbonate computation/output to CALC_PCO2_APPROX
330    o pkg/generic_advdiff
331      - make TAF generate code that vectorizes:
332        gad_dst3fl_adv_*.F, gad_u3c4_impl_r.F
333    o model/src:
334      - improve vectorization also for adjoint code of
335        solve_tridiagonal and solve_pentadiagonal. As this requires up to
336        5 new 3D-fields, this code is only turned on for the combination of
337        ALLOW_AUTODIFF_TAMC and TARGET_NEC_SX. Also remove error message
338        for singular matrix check (only for TARGET_NEC_SX).
339      - remove hard-wiring of CPP-flag ALLOW_SOLVERS_KLOOPINSIDE to
340        ALLOW_AUTODIFF. This flag now needs to be set outside of
341        solve_tri/pentadiagonal.F
342    o pkg/exf:
343      - fix previous modif in exf_readparms.F (revision 1.66: treatment of
344        optional namelist EXF_NML_OBCS).
345      - add many debug-print (to trace down where pkg/cal error msg comes from)
346    o pkg/mom_vecinv/mom_vi_hdissip.F
347      - rearrange loops so that vectorization is improved and in particular
348        the adjoint routine vectorizes. The code is a little longer now, but I
349        think easier to read.
350        Note: CPP-flag MOM_VI_ORIGINAL_VISCA4 is not tested.
351    o pkg/seaice:
352      - allow to specify initial seaice velocity from files (uIceFile,vIceFile)
353    o pkg/exch2:
354      - alternative code (without tile x tile matrix) for cumulated (global) sum;
355        used as default; keep using matrix version in adjustment.cs-32x32x1.
356    o tools/build_options:
357      - after merging some MPI and/or multi-threads specific optfiles so that
358        the modified default optfile support both built (using genmake2 -mpi
359        for the MPI built, using genmake2 -omp for OpenMP built),
360        move now obsolete optfiles to tools/build_options/unsupported/
361       (add copy of email sent to support list in doc/optfiles_changes.txt)
362    
363    checkpoint63c (2011/09/28)
364    o pkg/ebm:
365      - fix ebm_zonalmean.F for several procs in Ydir (nPy > 1); update output of
366        test exp. global_ocean_ebm (affects machine truncation, 12 digits for cg2d)
367    o pkg/seaice (SItracer pickup)
368    * Simple code for pickup of SItracer fields (#define ALLOW_SITRACER)
369      To be done:
370      - thorough testing of missing fields in S/R seaice_read_pickup
371      - thorough matching between generic tracers and specific fields used
372        (e.g. volume-weighted age, area-weighted age, salinity, ...)
373    o pkg/grdchk:
374      - all procs calculate and print finite-difference gradient (for testreport)
375      - change description output used by testreport;
376      - AD testing: also compare and report Finite-difference gradient;
377        => update all output_adm*.txt
378    o test exp. global_ocean_ebm:
379      - switch back useRealFreshWaterFlux (no problem anymore with run-off);
380        and turn on exactConserve; update (fwd) output.
381    o pkg/seaice (LSR):
382      - print to STDOUT number of solver iterations at SEAICE_monFreq interval.
383      - modify solver to deal cleanly with u/v switch at face edges (CS-grid):
384        * identical results with non-CS topology (but save up to half of EXCH calls)
385        * no much changes in cs-32 verification tests since no ice at face edges
386         (differences due to convergence criteria, since nb of iterations changed)
387        * expect some differences on lat-lon-cap grid.
388        update FWD results of global_ocean.cs32x15 test exp. (icedyn & seaice)
389    o pkg/exch2:
390      - add new CPP option to disable Cumul-Sum matrix (to save storage when using
391        many tiles); until alternative coding is added, just add a stop.
392    o pkg/kpp:
393      - move ptracer/salt correction to KPP diffusivity from calc_3d_diffusivity.F
394        to S/R KPP_CALC_DIFF_PTR (+ add tracer-index to argument list).
395    o optfiles:
396      - merged few MPI specific (*+mpi*) and multi-threads specific (*+mth) optfiles
397        into corresponding standard one, which now support different build:
398        (when using "genmake2 -mpi" for MPI built, "genmake2 -omp" for OpenMP built)
399      - add "darwin_amd64_gfortran" optfile (initially from Constantinos, tested by Gael)
400    o pkg/obcs (seaice):
401      - add missing EXCH for uIce,vIce after applying OBCS;
402      - remove S/R EXF_SWAPFFIELDS_X/Y , disable S/R EXF_SET_OBCS_X/Y by adding
403        argument = number of levels to S/R EXF_SWAPFFIELDS_XZ/YZ and S/R
404        EXF_SET_OBCS_XZ/YZ ; update obcs_exf_load.F;
405      - fix EXF_SET_OBCS_XZ/YZ for multi-threaded (assuming loaded arrays are shared)
406      - verification exp. seaice_obcs: split domain in 2 tiles ; add SIZE.h_mpi
407        and eedata.mth for MPI and mutlti-threaded testing.
408    o pkg/flt:
409      - make FLT EXCH working with multi-threads (and MPI + multi-threads);
410      - use buffer for floats IO (trajectories & profiles); size set in FLT_SIZE.h;
411      - fix pickup and trajectories + profiles output with multi-threads;
412      - add parameter to select group of fields to write along trajectory and
413        profile (default unchanged);
414      - only call PORT_RAND* function when flt_noise <> 0;
415      - add multi-threaded test for verification exp. flt_example.
416    o eesupp/src:
417      - fix S/R ALL_PROC_DIE for MPI+multi-threads.
418      - USE_OMP_THREADING: check that number of threads (from eedata) matches
419        actual number (from env.var. setting).
420    o pkg/ebm:
421      - fix multi-threading in ebm_area_t.F ; clean-up EBM.h header file.
422      - add multi-threaded test for verification exp. global_ocean_ebm
423    
424    checkpoint63b (2011/08/29)
425    o pkg/ebm:
426      - fix sign of runoff;
427      - update directly forcing fields (Qnet,EmPmR) to use standard
428        external_forcing_surf.F (remove ebm_forcing_surf.F);
429      - avoid loading forcing fields a 2nd time (1rst time from ini_forcing.F);
430      - set either tauThetaClimRelax (in data) or tauThetaZonRelax (in data.ebm)
431        and apply relaxation towards corresponding SST field (2-D map or ZonAver).
432      - update global_ocean_ebm parameters file data and update output (fwd+ad).
433    o verification/matrix_example:
434      - split domain in 8 tiles (2x4); add SIZE.h_mpi and eedata.mth for
435        MPI and mutlti-threaded testing.
436    o pkg/matrix:
437      - change name of S/R MATRIX_INIT to S/R MATRIX_INIT_VARIA ;
438      - fix for multi-tiles (add bi,bj indices to exp/impMatrixCounter);
439      - fix for multi-threaded (remove DATA statement);
440      - use standard DIFFERENT_MULTIPLE function;
441      - add MATRIX_OPTIONS.h
442    o verification/matrix_example:
443       To allow to split the domain in several tiles, change the domain size
444        from 31x31 to 32x32 by adding 1 row (on Southern side) + 1 column (on
445        Western side) of land points.
446    o (*_)write_pickup:
447      - fix few bugs in mypackage_read/write_pickup.F
448      - in MDS_WR_METAFILES calls, replace "myTime" by a local copy into
449        array of length 1 (was caught by compiler syntax-check).
450    o pkg/diagnostics (velocity potential solver):
451      - fix initialisation of main diagonal matrix (for overlap values)
452    o tools/build_options:
453      - towards single optfile for MPI and non-MPI built: merge few +mpi optfile
454        into previously non MPI one (linux_am64 pgf77,open64,pathf90,ifort11)
455      - linux_amd64_gfortran: merge +mpi_generic version into standard optfile:
456        * move IEEE flags to DEVEL section; take IEEE flags from +mpi_generic ;
457        * FAST case: for now, keep -O3 with ini_masks_etc.F in NOOPTFILES list;
458        and use "-devel" testreport option for standard testing on baudelaire.
459    o pkg/grdchk:
460      - Assume that all gradient-check position are within the same tile
461        corresponding to global indices (iGloTile,jGloTile) and that
462        positions (i,j indices or nbeg) are local to this tile;
463      - set tile local-indices and proc. number according to tile global-indices;
464      - remove grdchkwhichproc from namelist (retired param);
465      - send adjoint gradient to all procs so that all procs print it to STDOUT;
466      - switch on MPI test for global_ocean.90x40x15 AD test experiment.
467    o adding package bbl (Bottom Boundary Layer)
468      description in MITgcm/pkg/bbl/bbl_description.tex
469      example/test experiment in MITgcm_contrib/bbl
470    o adjoint verifications
471      - changed 5 experiments to multi-tiles
472        * global_ocean.90x40x15
473        * obcs_ctrl
474        * offline_exf_seaice
475        * tutorial_dic_adjoffline
476        * tutorial_tracer_adjsens
477        changed reference output for those that crossed tile boundaries
478        (changed choices of gradient check positions)
479      - with same tiling, switch on MPI test for the last 4 (add SIZE.h_mpi)
480      - temporary bug fix in grdchk_loc.F for obcs
481    o genmake2 & testreport
482      - add target "obj" (just for OBJFILES files) to Makefile;
483      - add option to specify FEXTRAFLAGS on command line.
484    o pkg/mypackage:
485      - remove bi,bj arguments from argument list of S/R MYPACKAGE_CALC_RHS
486    
487    checkpoint63a (2011/08/02)
488    o pkg/diagnostics (velocity potential):
489      - fix velocity-potential calculation when using OBCS: balance net inflow
490        at each level (new S/R OBCS_DIAG_BALANCE).
491      - fix some of the problems with OBCS in stream-function calculation.
492    o pkg/exf/exf_readparms.F
493      - make treatment of optional namelists (EXF_NML_04, EXF_NML_SGRUNOFF,
494        EXF_NML_OBCS) more consistent, so that you need not have these lists
495        in data.exf when they are not used.
496    o optim/optim_readdata.F:
497      - add some output about obcs variables that might help debugging
498      - add a check about nvarlength
499    o pkg/ctrl: once again, fix computation of endrec in s/r ctrl_init_rec
500    o pkg/diagnostics (velocity potential):
501      - fix mask for OBCS (still problems in stream-function with OBCS);
502      - add specific parameter (default = main code CG2D params) for solver;
503      - in case of poor convergence, use solution corresponding to lowest residual.
504    o pkg/seaice/seaice_growth.F: small changes that permit vectorizable
505      adjoint code. In general statements like tmpscal=fld(i,j) are problematic
506      and should be avoided where possible.
507    o model/src (rStar):
508      - include r* effect on reference-state (PhiRef) in totPhiHyd
509        (so that it's really the potential anomaly at the cell center);
510        affect solution only if z* with full pressure in EOS.
511      - test-exp global_ocean.90x40x15: reduce viscA4 (was not stable) and
512        update output (because of z* in totPhiHyd and viscA4 changes);
513      - keep the previous diagnostics as "PHIHYDcR" (closer to potential anomaly
514        @ constant r) until interpolation at constant r is implemented.
515    o pkg/diagnostics
516      - fix RCENTER diagnostics in case cell center is not at interface middle
517    o add code for TEOS-10 (www.teos-10.org, McDougall et al. 2011). Use
518      this eos with eosType = 'TEOS10', in data (PARM01). This eos implies
519      that THETA and SALT are "conservative temperature" and "absolute
520      salinity"
521    o pkg/ctrl
522      - fix computation of endrec in s/r ctrl_init_rec
523      - ctrl_pack/unpack_*: remove unused variables and some obsolete code
524    o pkg/seaice/seaice_growth.F
525      - fix recomputation with FENTY_AREA_EXPANSION_CONTRACTION code,
526        remove then obsolete STORE directives
527      - fix STORE directives for tice and tices, so that only the
528        appropriate part of the fields are stored (and not the entire
529        field); update global_ocean.cs32x15.seaice AD output.
530      - cosmetic changes: adjust CPP flags and indentation for better
531        legibilty
532    o pkg/autodiff: add mnc-output of adBottomDragFld (code contributed by
533      Chris Wilson)
534    o pkg/gmredi:
535       Add Sub-Meso Eddies parameterisation from Baylor (for now, disabled with TAF),
536       and test it in verification exp. "front_relax.bvp" (update output.bvp.txt)
537    
538    checkpoint63  (2011/07/11)
539    o pkg/exch2:
540     - rename+move: nTiles in W2_EXCH2_PARAMS.h --> exch2_nTiles in W2_EXCH2_TOPOLOGY.h
541     - exch2 version of Cumul-Sum routine: S/R W2_SET_MAP_CUMSUM set up the
542       (2*nTiles)x(nTiles) Cumul-Sum matrix and Master Proc collects all tiles X,Y
543       increments, calculates Cumul-Sum @ tile origin and sends results to each tile.
544    o pkg/diagnostics:
545     - deal with pairs of post-processed diags which are computed together; in
546       particular, re-order list of diags within 1 file to save 2nd computation.
547     - add S/R to compute velocity stream-function (called after velocity-potential
548       calculation) from divergence free transport -> new diagnostics "PsiVEL".
549     - add parameter to select grid-point location where PsiVEL == 0.
550    o eesupp/src:
551       new S/R to calculate cumulated sum on tiled array, corner grid-cell location
552       (specific S/R needed with exch2 topology - for now, just print an error msg)
553    o pkg/shelfice
554     - Implement friction velocity-dependent transfer coefficients following
555       Holland and Jenkins, JPO, 1999
556       Original code by M. Losch with small modifs.
557       Enable with CPP option SHI_ALLOW_GAMMAFRICT
558       and runtime flag SHELFICEuseGammaFrict
559    o verification lab_sea & global_ocean.cs32x15:
560     - use tools/xmakedepend (instead of cyrus_makedepend, in genmake_local):
561       does not miss some dependencies (but is slower) and also works with many files
562       (default makedepend limitation for AD built).
563     - use cyrus_makedepend in adjustment.128x64x1 (so that it still tested).
564    o pkg/diagnostics:
565     - add run-time parameter "useMissingValue" (def=False) to fill land-point
566        (i.e., where mask=0) with MissingValue ; used only in MNC output file.
567       This replaces CPP-option DIAGNOSTICS_MISSING_VALUE.
568     - Extend the use of "missing_value" setting from data.diagnostics for the case
569       of counter-diagnostics (where fraction-weight is zero). This applies both to
570       MNC and MDS output files.
571    o pkg/seaice/seaice_growth.F:
572      - add 'a priori' cap of latent heat flux based on actual mass considerations
573        when SEAICE_ADD_SUBLIMATION_TO_FWBUDGET is used in conjunction with the
574        non-legacy seaice_solve4temp.
575      - add diagnostic of the residual sublimation freshwater flux (the freshwater
576        flux taken from the ocean if the total actual latent heat fluxes exceed
577        the maximum)
578      - remove the CPP switch around the *_FWbySublim unit change and move diagnostic
579       fill for SIatmQnt, SIfwSubl, SIatmFW to the end of seaice_growth.F.
580      - add diagnostic of the actual sublimation freshwater flux (that is 0. ifndef
581       SEAICE_ADD_SUBLIMATION_TO_FWBUDGET) and of the latent heat flux (evap+sublim).
582      - bug fix : frWtrAtm needs a_FWbySublim ifdef SEAICE_ADD_SUBLIMATION_TO_FWBUDGET.
583      - bug fix : missing part to Martin's r_FWbySublim pathological case fix.
584    o verification 1D_ocean_ice_column:
585       made model domain truly 1x1x23 instead of 5x5x23 with only center cell (3,3,:) wet
586       update results
587    o pkg/diagnostics:
588     - Implement setting of "Post-Processed" diagnostics (corresponding to gdiag(5)='P')
589       which are not filled-up but computed from other diags ; In this case, the mate
590       diag points to the primary (filled-up) diag to used for post processing.
591     - Update Velocity-potential computation using post-processed diag framework.
592     ==> Change the ordering of fields and time-periods in MDS output file
593       when using periodic averaging: now writes one time record with the full set
594       of fields for this time period, then the next time reccord (it used to be
595       one field with the full set of time records then the next field).
596         Note: this is now similar to NetCDF (MNC) output file. <==
597    
598    checkpoint62z (2011/06/21)
599    o adjoint monitor:
600     - Add adjoint monitor output for packages exf, seaice
601       and update relevant testreport output
602    o pkg/seaice:
603     - re-order diags inits so that they appear in order in available_diagnostics.log
604     - added diags: hsnow thermo. rates of change, area preceeding ridiging process,
605       area/heff/hsnow preceeding thermodynamic growth/melt.
606     - modified diag: SIdA; output actual effect, as the description states.
607     - modified description: SIqneti, SIqneto, SIuheff, SIvheff, SIdAb*, HSNOW.
608     - retired redundant diags: SIyneg, SIfice, SIsnwice, SIthdgrh.
609       (SIyneg->SIdHbOCN; SIfice->SIdHbATC; SIsnwice->SIdHbFLO;
610        and SIthdgrh->SIdHbOCN+SIdHbATC+SIdHbATO)
611     - modified diags (2) : switch all SIdA*, SIdH*, SIdS* from delta to rates.
612     - added diagnostics for seaice generic tracers (SItr*).
613     - added SItrUnit and SItrNameLong run time param (for SItr* diags).
614     - in diag names, replaced 'PrTh' abbrev. of 'preceeding thermo' with 'PT'.
615     I. Fenty: 18-Jun-2011:
616     Minor changes to seaice package:
617     1) Retired old variables (A22, SEAICE_lhsublim, areaMax, areaMin, hiceMin) and
618        added some new ones (SEAICE_area_reg, SEAICE_hice_reg, SEAICE_area_floor)
619       - Differentiated "regularization variables" from "floor variables"
620        * areaMin became SEAICE_area_reg (old A22) and SEAICE_area_floor
621        * hiceMin became SEAICE_hice_reg (old hiceMin)
622          (with _reg meaning regularization variable)
623       - SEAICE_lhSublim becomes lhSublim, the sum of SEAICE_lhEvap and SEAICE_lhFusion
624        so as to ensure energy conservation when going between phases
625      - A22 was not used anywhere
626     2) Changed regularization procedure for heffActual and hsnowActual to ensure
627        well-boundedness and smooth adjoint in seaice_growth.F
628     3) Fixed a bug where seaice_solve4temp would not recognize ice-free grid cells
629        because the old regularization always set heffActual >= 0.05 cm
630     4) Changed the model so that the default behavior is to put a small (10^-5) "floor"
631        on AREA when HEFF > 0.
632      - went from requiring ALLOW_PRECLUDE_INFINITESIMAL_AREA to be defined to
633        requiring that DISABLE_AREA_FLOOR *not* be defined
634     Affected verifications:
635      - 1D_ocean_ice_column (output.txt output_adm.txt)
636      - global_ocean.cs32x15 (output.seaice.txt output_adm.seaice.txt)
637    o pkg/diagnostics:
638      - move MNC code from diagnostics_out.F into new diagnostics_mnc_out.F (2 S/R).
639      - rename S/R GETDIAG to DIAGNOSTICS_GET_DIAG and change type of 1rst argument
640        (was _RL, now integer) with option = 0 to retrieve all levels.
641      - add pieces of code to compute velocity potential at each level (new diagnostics
642        PhiVEL, works only when UVELMASS & VVELMASS are also turned on);
643        for now, using same params as CG2D (target-resisual, max Nb of iter ...).
644      - fix few issues with counter diagnostics in diagnostics_setdiag.F &
645        diagstats_setdiag.F (if diagnostic counter is itself a counter diag)
646        and in diagnostics_fract_fill.F (do not need a valid pointer for the
647        diagnostics counter-mate); check that definition of counter-diagnostic
648        includes a valid counter-mate (in diagnostics_set_levels.F).
649    o model/src (rStar):
650      - add rStar scaling factor in diags_phi_hyd.F (similar to calc_grad_phi_hyd.F);
651        affect solution only if z* with full pressure in EOS;
652        update output of test-exp global_ocean.90x40x15.
653    o pkg/seaice:
654      - introduce siEps=1e-5 parameter
655      - use areaMax in AREA update (part 4), consistent with ridging step (part 2.5).
656      - re-organize SEAICE_ADD_SUBLIMATION_TO_FWBUDGET code.
657      - introduce ALLOW_SITRACER and seaice_tracer_phys.F to handle generic seaice tracer.
658        For now it covers, and was tested for, ice salinity and age (attached to HEFF),
659        as well as ice cover age and ridging index (attached to AREA).
660        For now the run time parameters (in data.seaice/SEAICE_PARM03) are
661        SItrName (e.g. 'age') and SItrMate ('HEFF', which is the default, or 'AREA').
662        Up to SItrMaxNum=3 tracers can be used simultaneously.
663    o pkg/salt_plume:
664      -introduce SPsalFRAC run time parameter that sets the fraction of the
665       salt by-product of ice growth (SPsalFRAC*(1-SIsalFRAC)*salt typically)
666       that gets vertically redistributed (fluxed down) by pkg/salt_plume.
667    o model debug options:
668      - Switch reading of debugMode from S/R INI_PARMS (parameter file "data", stored
669        in PARAMS.h) to S/R EESET_PARMS (parameter file "eedata", stored in EEPARAMS.h).
670      - Refine debug-msg printing selection (3 new levels):
671        debugMode  : controls printing of debug messages (sequence of S/R calls).
672        debugLevel : controls printing of algorithm-relevant auxiliary/debug messages
673         debLevZero =  0 ; /* level of disabled aux. msg printing */
674         debLevA =  1 ; /* level of minimum  aux. msg printing */
675         debLevB =  2 ; /* level of low aux. print (report read-file opening)*/
676         debLevC =  3 ; /* level of moderate debug prt (most pkgs debug msg) */
677         debLevD =  4 ; /* level of enhanced debug prt (add DEBUG_STATS prt) */
678         debLevE =  5 ; /* level of extensive debug printing */
679        New debugLevel default: with default debugMode value (=F),
680          = 2 (debLevB) or = 1 (debLevA) in case ALLOW_AUTODIFF is defined.;
681          and if debugMode=T, default debugLevel = 4 (debLevD).
682        Relation with previous settings:
683         debLevB (=2) corresponds to former debLevA (=1)
684         debLevD (=4) corresponds to former debLevB (=2)
685        Note:
686         a) if debugLevel=0, skip WRITE_GRID call when nIter0 > 0 (same as before);
687         b) default debugLevel=1 is convenient in AD runs (avoid many file opening msgs);
688            to recover previous default, set debugLevel=2 (e.g. AD-test hs94.1x64x5)
689      - Add new parameter (printResidualFreq, read from PARM02 namelist) to print
690        detailed CG solvers convergence; off (=0) by default, except if debugLevel=5.
691    o pkg/obcs:
692      - change OBCSfixTopo default from True to False (should not change the results);
693        keep OBCSfixTopo=T in verification-exp. seaice_obcs.
694    o pkg/thsice:
695      - fix bug in thsice_calc_thickn.F (was introduced in version 1.18) in
696        2nd layer seaice sublimation (unlikely to happen)
697      - use Interior mask for OBCS in thsice_advection.F (similar to what is
698        done in gad_advection & seaice_advection).
699    o adjoint:
700      bug fix spotted by Gael Forget:
701      seaice_advection and thsice_advection still had
702      legacy CPP options to avoid CS corner updates for adjoint
703    o pkg/seaice:
704      => Change some of the defaults (2011/05/29):
705         - change SEAICEuseFluxForm default (from False to True)
706         - change DIFF1 default (from 0.004 m/s to 0. m/s)
707         And print warnings if DIFF1 is not set in data.seaice and centered
708          avection scheme is used without any diffusion.
709      also:
710      - fix seaice_diffusion calls in default AdvScheme part of seaice_advdiff.F;
711      - set SEAICEdiffKh[] default in the same way as SEAICEadvSch[]
712      - stop if DIFF1<>0 with SEAICEadvScheme <> 2, if DIFF1<>0 with any
713        other non-zero SEAICEdiffKh[] diffusivity, if SEAICEadvSalt=T with
714        #undef SEAICE_VARIABLE_SALINITY, if SEAICEadvAge=T with #undef SEAICE_AGE.
715      update results of test exp.:
716         lab_sea: output.fd (switch to AdvScheme=33 with diffKh=20)
717             output.hb87, output_adm.evp (SEAICEuseFluxForm=T and diffKh=200)
718             output_adm.noseaicedyn (SEAICEuseFluxForm=T)
719         offline_exf_seaice: output.seaicetd, output_adm (SEAICEuseFluxForm=T)
720         seaice_obcs: output (SEAICEuseFluxForm=T)
721      and prescribe old default for SEAICEuseFluxForm (=F) and DIFF1 (=0.004)
722          for standard fwd & AD lab_sea tests (to keep the same output).
723    o pkg/seaice/seaice_growth.F:
724      - use Ian Fenty's capping formulas for actual ice
725      thickness thoughout EVOLUTION branch.
726      - put treatment pathological case #2) in CPP brackets
727      (ALLOW_AVOID_INFINITESIMAL_AREA, undef by default).
728      - update global_ocean.cs32x15 and 1D_ocean_ice_colum results accordingly.
729    o pkg/seaice:
730      - seaice_diffusion.F : remove the min(DX,DY) factor permanently;
731      pass the Laplacian diffusivity (in m^2/s) diffKh as a parameter;
732      also pass fac as a param, which can be 1. (to update the tendency
733      field) or the time step (to update the field itself).
734      - seaice_advdiff.F: for multidim, call seaice_diffusion with
735      e.g. SEAICEdiffKhHeff and with fac=1; for single-dim, call
736      seaice_diffusion with e.g. SEAICEdiffKhHeff and with fac=time step.
737      - SEAICE_PARAMS.h, seaice_readparms.F, seaice_check.F :
738      hooks to handle SEAICEdiffKhHeff, SEAICEdiffKhArea, etc.
739    o pkg/seaice:
740      diffusion with centered advection scheme (diffus.F & advect.F):
741      - simplify S/R DIFFUS (put deltaT & DIFF1 factor outside, move EXCH outside)
742        to just compute the laplacian of input-field.
743      - unroll k loop (harmonic,biharmonic diff) in advect.F to save 1 exch call.
744      - fix flux-form version in diffus.F to conserve tracer.
745      update output of lab_sea.fd & lab_sea.hb87 (1rst set of modif affects
746       machine truncation) and lab_sea.salt_plume (conservative flux-form modif)
747    
748    checkpoint62y (2011/05/26)
749    o pkg/seaice:
750     - seaice_growth.F : in EVOLUTION branch, always include
751       a_QSWbyATM_cover in qnet (as it should be).
752     - verification/global_ocean.cs32x15 : update results accordingly
753       (output.seaice.txt output_adm.seaice.txt).
754    o pkg/seaice + obcs:
755     - use maskInW & maskInS in multi-dim advection and biharmonic diffusion:
756       equivalent of assuming no tracer gradient outside the OB region.
757       update output of seaice_obcs (uses DIFF1 <>0 => biharmonic diffusion)
758     - remove calls to OBCS_COPY_TRACER after EXCH calls (no longer needed
759       after changes above);
760     - obcs+seaice cleaning: apply seaice-tracer OB values to tracer field
761       only at OB location (instead of over a band of OLx width).
762    o pkg/seaice:
763     - fix wrong indices in old (non Flux-Form) diffusion default S/R diffus.F
764       (dxG(I+1, ...) changed to dxG(I, ...), no impact on Lat-Lon grid)
765    o pkg/obcs:
766      - split header file "OBCS.h" into 4 separated files:
767        OBCS_PARAMS.h, OBCS_GRID.h, OBCS_FIELDS.h & OBCS_SEAICE.h
768       Note: OBCS_PARAMS.h & OBCS_GRID.h can be included without OBCS_OPTIONS.h
769         (contain no conditional statement which depends on OBCS options).
770      - move "useOBCSYearlyFields" from "data.obcs" (hold in OBCS_PARAMS.h)
771        to parameter file "data.exf", namelist EXF_NML_OBCS (in EXF_PARAM.h).
772    o ctrl, cost, grdchk & autodiff pkgs:
773      - make options file more standard (like other {PKG}_OPTIONS.h file but
774        with AD_CONFIG.h); clean-up some of the included header files.
775    o pkg/obcs:
776      - do not mask tracer when applying OB (tracer == 0 could generate problems)
777      - apply tracer OB values to tracer field only at OB location (instead of
778        over a band of OLx width)
779      - clean-up obcs_apply_w.F & obcs_apply_eta.F (since less calls to these S/R)
780      - remove OBCS_MULTIDIM_OLD_VERSION code in gad_advection.F and remove
781        obcs_apply_tloc.F & obcs_apply_sloc.F
782    o obcs in model/src:
783      - call OBCS_APPLY_W only if NonHydrostatic.
784      - call OBCS_APPLY_ETA only if NonLinFreeSurf.
785      - reset dEtaHdt and wVel to zero outside OB interior region ;
786      - leave tracer unchanged outside OB interior region: This has no effect
787        on the solution but just to prevent unrealistic tracer value outside OB.
788      - zero out velocity outside OB interior region: This has no effect on
789        the solution but just to prevent unrealistic velocity outside OB.
790    o obcs and non-lin free-surf:
791       move call to OBCS_APPLY_R_STAR from update_r_star.F to calc_r_star.F
792       and call to OBCS_APPLY_SURF_DR from update_surf_dr.F to calc_surf_dr.F
793       + add argument "etaFld" to OBCS_APPLY_R_STAR & OBCS_APPLY_SURF_DR:
794       this fixes missing EXCH + get consistent eta OB value (+ fix restart).
795       update results of test-exp. exp4(nlfs).
796    o exp4 (nlfs) test-exp:
797       use OBC for Eta at Western & Eastern OB (to test prescribing Eta
798       with NonLin-FreeSurf); update output.nlfs.txt
799    o obcs and 2d/3d solver norm:
800       use interior masks (maskInC) to cancel out cg2d & cg3d matrix coeff at OB
801       and outside OB interior region (will allow to place OB further inside the
802       domain). Depending on the domain, can affects cg2d-Norm (previous
803       cancellation outside OB was only partial), e.g. in exp4 & obcs_ctrl,
804       and cg3d-Norm (previous Norm was computed before canceling OB terms),
805       e.g. in tutorial_plume_on_slope.
806      - update output of exp.: exp4 (x2), obcs_ctrl and tutorial_plume_on_slope.
807    o pkg rbcs:
808      - split RBCS.h into 3 files: RBCS_SIZE.h, RBCS_PARAMS.h & RBCS_FIELDS.h
809      - add capability to apply relaxation to horizontal velocity uVel & vVel.
810    o pkg/grdchk: add gradient check for control variable xx_shifwflx
811    o pkg/shelfice/shelfice_init_fixed.F
812      fix CPP-flag combinations
813    o pkg/seaice: Merge iceage code of Pierre Rampal
814      * update/change/correct ice age calculations
815      * add age updates for pathological cases
816      Probably needs more testing...
817    
818    checkpoint62x (2011/05/13)
819    o pkg/mom_vecinv:
820       high-order vorticity scheme: use interior masks (maskInW & S)
821       to zero-out (outside OB) gradient of vorticity.
822    o verification exp.:
823       turn on "useEnergyConservingCoriolis" (better discretisation) in exp.
824       hs94.128x64x5 and seaice_obcs ; update results.
825    o pkg/obcs:
826      fix bug in OBeta for YZ sections in obcs_exf_load.F
827    o pkg/ctrl, pkg/shelfice, and optim:
828      - add new control variable xx_shifwflx (fresh water flux underneath ice
829        shelves). This is almost as tedious as obcs-ctrl, because the
830        variables needs its own mask.
831      - add a cost function term that penalizes the deviation of xx_shifwflx
832        from the first guess (zero) in analogy to other control variables
833    o pkg/shelfice:
834      - start basic adjoint
835    o pkg/ctrl:
836      - remove extra 2D field "for good measure" when initializing in
837        ctrl_set_globfld_[xy/xz/yz].F
838      - replace hard coded precision 32 (a bug) in ctrl_map_ini_gen by ctrlprec
839      - improve error messages in ctrl_set_unpack_*
840    o OBC implementation in momentum:
841       use interior masks (maskInC,W & S) in momentum S/R:
842       - multiply divergence, tension and some del^i.u or del^j.v by maskInC
843       - multiply del2u,del2v by maskInW/S (biharmonic viscosity)
844       - multiply horiz. grad of vorticity by maskInW/S (in Leith scheme)
845       - multiply gradient of wVel by maskInW/S in del2w calculation (NonHyd)
846       Motivation: fix/clean implementation of OBC with biharmonic-viscosity
847        (and also with Leith/Smagorinsky harmonic-viscosity).
848       Update output of experiment dome and exp4 (+nlfs).
849    o exp4 test-exp:
850      - turn on: nonHydrostatic, exactConserv, viscA4 (with momDissip_In_AB=F)
851        and prescribe time-varying OB (without pkg/exf) for zonal-velocity
852        at Western & Eastern Boundaries (+/- 1 per-cent); Also prescribe
853        time-varying OB at Western-side for wVel (NonHyd); update output.
854      - add secondary set-up (.nlfs) using NonLin FreeSurf (z*) + mom_vecinv
855        and biharmonic-viscosity ; also use prescribed time varying OB.
856    o pkg/obcs:
857      fix bug in OBWeta,OBWeta indices in obcs_apply_r_star.F
858    o model/src:
859      - fix startTime setting when baseTime<>0 & nIter0=0 are specified ;
860      - initialise startTime & nIter0 with unlikely values: allows to set one
861        from the other without ambiguity.
862    o seaice_obcs test-exp.:
863      add small diffK4T,S to test biharmonic diffusivity with OBCS ; update output.
864    o pkg/obcs:
865      - remove calls to OBCS_COPY_TRACER after EXCH for T,S & pTracer:
866        no longer needed with maskInC,W,S in pkg/generic_advdiff.
867    o pkg/seaice:
868      - retired SEAICE_SALINITY and SEAICE_salinity in favor of
869        SEAICE_VARIABLE_SALINITY and SIsalFRAC, respectively.
870      - fixed bug in the initialization of sea ice salinity variable HSALT
871        in seaice_init_varia.F  (removed dependence on ICE2WATR)
872    o fizhi-cs test exp.:
873       switch reference output convention for these 2 non-standard test-exp,
874        from: pgi  6.1-5 on faulks (FC.6, -of linux_ia32_pgf77+authors_fc5)
875          to: ifort 11.1 on baudelaire (FC.13, -of linux_amd64_ifort11)
876       reason: faulks might get retired soon and pkg/fizhi has still Pb with gfortran
877    o model/inc:
878      - change type of PmEpR array (from _RS to _RL) to fix restart (with "-use_r4")
879        of exp. global_ocean.90x40x15 (Suncronous time-stepping + Real-FW + NonLin-FS)
880    o pkg/seaice:
881      - fix calculation of saltFlux and saltPlumeFlux when using SEAICE_SALINITY
882    o verification/lab_sea, 1D_ocean_ice_column, seaice_obcs, global_ocean.cs32x15
883      - updated output*.txt files due to bug fixes in salt, saltPlumeFlux,
884        and initial HSALT
885    
886    checkpoint62w (2011/04/26)
887    o pkg/mom_fluxform:
888      - fix calculation of del2u & del2v (no-slip BC) when using Non-Lin Free-Surf.
889      - use parameter "sideDragFactor" in no-slip BC side-drag part.
890      - update output of exp. global_ocean.90x40x15
891    o pkg/mom_vecinv:
892      mask del2u & del2v (no effect on results, but cleaner & closer to mom_fluxform)
893    o update seaice exp.:
894      use more consistent parameter values (remove "backward compatability only":
895       ICE2WATR, SEAICE_lhSublim, SEAICE_cpAir, SEAICE_rhoAir + set rhoConstFresh)
896      related to thermodynamics seaice. Update output (fwd+AD) of exp.:
897       1D_ocean_ice_column (x2), lab_sea (x8), ioffline_exf_seaice (x2) & seaice_obcs
898    o update test-exp global_ocean.90x40x15:
899      o use default CD_CODE_OPTIONS file (Adams-Bashforth on CD Mom & Coriolis).
900      o increase Overlap size from 2 to 3 (to allow to test bi-harmonic Visc.)
901      o new pickup-files from a 100.yr run with pkg/down_slope (input.dwnslp params)
902      o turn on zStar & viscA4 in standard set-up (dir input/)
903        and update output files: output.txt & output.dwnslp.txt
904    o new AD-test experiment: obcs_ctrl
905      (From Matt MITgcm_Contrib/SOSE/BoxAdj) to test OBCS as control vector.
906    o pkg/dic:
907      fix two bugs in handling water vapour pressure in carbonate chemistry
908      and air-sea fluxes. Found by Val Bennington and Galen McKinley
909      (add DIC Option = WATERVAP_BUG to recover old results)
910      update output of tutorial_global_oce_biogeo (fwd+AD) & tutorial_dic_adjoffline
911    o adding allowInteriorFreezing option to check for water below freezing point
912      at depth and bring the negative heat anomaly to the surface level
913    o pkgs _fields_load:
914      - extend GET_PERIODIC_INTERVAL to deal with non-periodic case (from pkg/rbcs)
915      - use new S/R GET_PERIODIC_INTERVAL in pkgs:
916        bulk_force, cheapaml, cfc, dic, obcs (+ ctrl/ctrl_get_gen_rec), offline and
917        rbcs to get interpolation weights and time reccord number.
918      - fix multi-threading in aim_fields_load.F
919      - apply EXCH to temp arrays [0,1] after reading in dic_fields_load.F
920    o external_fields_load:
921      new S/R GET_PERIODIC_INTERVAL to calculate which time-record (and linear
922       interpolation weights) to use in a periodic time-series ; do not divide by
923       time-step to convert to integer:
924       - this fixes case where externForcingPeriod is not multiple of time-step
925          (Thanks to Christopher L. Wolfe)
926       - this fixes case where externForcingPeriod is an odd multiple of time-step
927         (was wrong by half of time-step); update results of tutorial_global_oce_in_p.
928      store index of time-record which is currently loaded:
929       - works without any assumption on sequence of calls to EXTERNAL_FIELDS_LOAD ;
930       - needed for the adjoint but not yet used because of extensive recomputations;
931         (to be fixed soon)
932    
933    checkpoint62v (2011/04/02)
934    o verification/1D_ocean_ice_column added to test Ian Fenty's
935      pkg/seaice_growth.F modifications for improving sea ice code differentiability
936    o update output of exp4, internal_wave, seaice_obcs, tutorial_plume_on_slope
937      (new velocity statistics after changing maskInW & maskInS definition)
938    o pkg/generic_advdiff with OBCS:
939      use maksInW & maskInS in advective flux and in biharmonic diffusion calculation:
940      equivalent to assumption of no tracer gradient outside the OB region.
941      This will affect the results if using obcs+biharmonic diffusion.
942      update output_adm.txt of experiment bottom_ctrl_5x5 (not expected since no obc)
943    o pkg/obcs:
944      change definition of maskInW & maskInS: leave OB edges inside (maskIn=1)
945      (e.g., maskInW(OB_Ie)=1 ) so that velocity normal-component at OB is still
946      in Interior region. No impact on solution but affects Velocity monitor stats.
947    o pkg/ptracers (adjoint)
948      New option AUTODIFF_PTRACERS_SPLIT_FILES for writing separate
949      tape file for each tracer
950    o model/inc/src and pkg/autodiff: add parameters that allow to turn
951      of parts of the adjoint code at run time. For now, there are only
952      useKPPinAdMode, useGMrediInAdMode, and useSEAICEinAdMode. These
953      parameters are set in data.pkg.
954      This is the lazy coward's version of doing this, but still useful for
955      debugging. In order to do it right, everything needs to be moved to
956      pkg/autodiff.
957    o pkg/autodiff: fix global_sum_tile_ad.F by resetting adsumPhi at
958      the end; this fixes the adjoint balancing code for open boundaries.
959    o pkg/ctrl:
960      - change behavior of xx_${varname}period to be analogous to exf-conventions:
961        xx_${varname}period =   0.,  means time-independent control part
962        xx_${varname}period = -12., means one-year-periodic monthly control part
963      - introduce helper routine ctrl_init_rec (part of ctrl_init.F) to
964        clean up ctrl_init a little, remove unused variables
965      - ctrl_init: fixed the handling of the start/endrec for obcs-variables
966      - move "call cal_GetMonthsRec" from s/r ctrl_get_gen to s/r ctrl_get_gen_rec
967    
968    checkpoint62u (2011/03/15)
969    o model/src:
970      - for the adjoint, change NonLin-FreeSurf initialisation sequence: fill-in
971        h0Fac from INITIALISE_FIXED and reset hFac to h0Fac in INITIALISE_VARIA ;
972      - in initialise_varia.F (except for ALLOW_DEPTH_CONTROL) remove 2nd call to
973        INI_DEPTHS, INI_MASKS_ETC & INI_LINEAR_PHISURF.
974    o pkg/ctrl/obcs/ecco:
975      - remove obsolete, unused, and partially broken code:
976        ctrl_obcsvol/ctrl_obcsbal/ctrl_volflux and code within
977        ALLOW_CTRL_OBCS_BALANCE
978      - put a stop statement into ecco/cost_obcsvol.F, but also add
979        cost_obcsvol to ecco_ad_diff.list
980    o pkg/ecco: fix counting cost function contributions for obcs (code
981      by Matt M.) and diffkr for diagnostics
982    o pkg/ecco, pkg/ctrl, pkg/grdchk:
983      add cost penalty terms for initial uvel, vvel, eta controls
984      and I/O for prior error files
985    o pkg/mdsio:
986       move mds_check4file.F from eesupp/src to mdsio_check4file.F ; add option
987       (new argument) to check for tiled file in mdsioLocalDir : this fix the
988       restart from pickup_som , pickup_dic (& dic_co2atm) with mdsioLocalDir.
989    o pkg/ctrl:
990     - ctrl_obcsbal.F, ctrl_obcsvol.F: replace last calls of ctrl_getrec by
991       ctrl_get_gen_rec, put a stop statement into ctrl_getrec. Remove
992       unused and superfluous variables
993     - ctrl_get_gen_rec.F: catch the case of xx_genperiod=0.
994    o pkg/ecco
995     - enable adjoint of Stevens OB
996    o pkg/ctrl/ecco/grdchk:
997      - remove global declaration of tmpfldx/yz and tmpfldx/yz2.
998        Fortunately, we do not have any tests for the numerous cpp-flagged
999        option of "obcs as control parameters" so we will never know
1000        if this is an improvement (but at least now things compile).
1001      - remove an obsolete initialization from ecco_cost_init_barfiles.F
1002      - fix some problems within never used ifdefs to make the code compile
1003    o pkg/obcs:
1004     - Refine Interior mask definition to work with more complex OB (e.g.
1005       if OB_Ie < OB_Iw); In case default setting is not sufficient, allows to
1006       read in Interior mask from file. Check if Interior mask is consistent
1007       with OB list of indices.
1008    o pkg/seaice
1009     - beginning code for a seaice tracer package,
1010       but currently only used for seaice age: SEAICE_AGE
1011       SEAICE_num = 4
1012       iTracer = 1: area-weighted ice age
1013               = 2: volume-weighted ice age
1014               = 3, 4: template for one-year vs. multi-year ice
1015       data.seaice has new namelist SEAICE_PARM03 for arrays related to
1016       SEAICE_num
1017    
1018    checkpoint62t (2011/03/05)
1019    o pkg/obcs:
1020     - obcs_apply_uv.F: change to a 2 steps method, first tangential component;
1021       then normal component. This ensures that the normal component is set
1022       correctly even when it conficts with tangential setting from an other OB.
1023       Affects results of test-experiment seaice_obcs: update the output.txt
1024    o pkg/obcs:
1025     - add code to monitor statistics of dynamical fields at OB.
1026     - take OBCS_BALANCE code out of obcs_calc.F into new S/R OBCS_BALANCE_FLOW :
1027       - fix to OBCS_BALANCE code (right hFac ; deal with simple OB intersection).
1028       - change default: balance the Net inflow through all OB (instead of balancing
1029         each OB separately); keep the old method if setting OBC_balanceFacX < 0.
1030     - switch on useOBCSbalance in dome experiment: only correct Western OB outflow
1031       to match Nortern OB inflow (OBCS_balanceFacN=0).
1032    o pkg/seaice:
1033     - redefined actual sea ice age to be ICEAGE/HEFF ifdef SEAICE_AGE_VOL
1034    o pkg/seaice (seaice_growth v 1.113):
1035     - reverting seaice_growth to v 1.111 in order to have code with exact bit
1036       compatibility with MITgcm_contrib/ifenty/Fenty_seaice_thermo_code_merge
1037       CPP option SEAICE_OCN_MELT_ACT_ON_AREA removed in v 1.112 is reintroduced
1038       runtime flag SEAICEareaFormula is kept but is inactive
1039    o model/src:
1040     - add new param to scale curvilinear grid distance and area when using
1041       a different sphere radius from the grid-files.
1042     - test/check multi-threads EXCH applied to local variable (cg2d_x)
1043    o adjoint:
1044     - enable adjoint of Stevens OB
1045     - add dummy_in_dynamics to enable extraction of ADJrhoinsitu
1046       (a bit delicate because of potentially modified adj. common block structure;
1047       current switch is ALLOW_AUTODIFF_MONITOR_DIAG, could be changed later)
1048    
1049    checkpoint62s (2011/02/15)
1050    o pkg/seaice (seaice_growth v 1.112):
1051     - introduce SEAICEareaFormula run time parameter, which selects the recipe for
1052       computing the ice cover tendency from effective thickness tendencies. Include
1053       Ian Fenty's formula.
1054     - remove 'undef SEAICE_OCN_MELT_ACT_ON_AREA' which may now be achieved using
1055       SEAICEareaFormula.
1056     - simplify notations for the various d_HEFF/d_AREA terms.
1057    o pkg/gmredi:
1058     - add Boundary-Value-Problem bolus transport (Ferrari etal, OM 2010) code
1059       from Christopher Wolfe (UCSD); add partial cell factor in vertical derivative;
1060       add a verification test-run (front_relax.bvp) to test GM_useBVP.
1061    o pkg/seaice (seaice_growth v 1.111):
1062     - for SEAICE_DO_OPEN_WATER_GROWTH, replace Gael's implementation with Ian's.
1063     - the new SEAICE_DO_OPEN_WATER_MELT allows open-water air-sea heat fluxes to
1064       also melt ice.
1065    o pkg/seaice:
1066     - McPhee formula for Ice-Ocean fluxes (provided by Ian Fenty).
1067     - can be used by #define MCPHEE_OCEAN_ICE_HEAT_FLUX in SEAICE_OPTIONS.h
1068    o pkg/cheapaml:
1069     - from Nico Wienders: New version of this package.
1070    o pkg/flt:
1071     - add CPP options to prevent floats to re-enter the opposite side of
1072       a periodic domain (default: keep periodicity)
1073  o pkg/gmredi:  o pkg/gmredi:
1074   - apply exchange to GM_PsiX,GM_PsiY to get valid values near CS-corners   - apply exchange to GM_PsiX,GM_PsiY to get valid values near CS-corners
1075     (needed for multi-dim advection).     (needed for multi-dim advection).
1076     - switch on GM Advective form in global_ocean.cs32x15 and update output.txt
1077  o model/src:  o model/src:
1078   - fix wrong re-setting of addMass array (ALLOW_ADDFLUID) for atmospheric run.   - fix wrong re-setting of addMass array (ALLOW_ADDFLUID) for atmospheric run.
1079    o tutorial_tracer_adjsens
1080     - extend to NLFS and replace maskC by hFacC
1081       (change reference output accordingly)
1082    
1083  checkpoint62r (2011/01/24)  checkpoint62r (2011/01/24)
1084  o testreport:  o testreport:

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