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revision 1.1245 by jmc, Thu Apr 1 15:32:08 2010 UTC revision 1.1470 by jmc, Fri Jul 1 19:03:34 2011 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/diagnostics:
8     - deal with pairs of post-processed diags which are computed together; in
9       particular, re-order list of diags within 1 file to save 2nd computation.
10     - add S/R to compute velocity stream-function (called after velocity-potential
11       calculation) from divergence free transport -> new diagnostics "PsiVEL".
12    o eesupp/src:
13       new S/R to calculate cumulated sum on tiled array, corner grid-cell location
14       (specific S/R needed with exch2 topology - for now, just print an error msg)
15    o pkg/shelfice
16     - Implement friction velocity-dependent transfer coefficients following
17       Holland and Jenkins, JPO, 1999
18       Original code by M. Losch with small modifs.
19       Enable with CPP option SHI_ALLOW_GAMMAFRICT
20       and runtime flag SHELFICEuseGammaFrict
21    o verification lab_sea & global_ocean.cs32x15:
22     - use tools/xmakedepend (instead of cyrus_makedepend, in genmake_local):
23       does not miss some dependencies (but is slower) and also works with many files
24       (default makedepend limitation for AD built).
25     - use cyrus_makedepend in adjustment.128x64x1 (so that it still tested).
26    o pkg/diagnostics:
27     - add run-time parameter "useMissingValue" (def=False) to fill land-point
28        (i.e., where mask=0) with MissingValue ; used only in MNC output file.
29       This replaces CPP-option DIAGNOSTICS_MISSING_VALUE.
30     - Extend the use of "missing_value" setting from data.diagnostics for the case
31       of counter-diagnostics (where fraction-weight is zero). This applies both to
32       MNC and MDS output files.
33    o pkg/seaice/seaice_growth.F:
34      - add 'a priori' cap of latent heat flux based on actual mass considerations
35        when SEAICE_ADD_SUBLIMATION_TO_FWBUDGET is used in conjunction with the
36        non-legacy seaice_solve4temp.
37      - add diagnostic of the residual sublimation freshwater flux (the freshwater
38        flux taken from the ocean if the total actual latent heat fluxes exceed
39        the maximum)
40      - remove the CPP switch around the *_FWbySublim unit change and move diagnostic
41       fill for SIatmQnt, SIfwSubl, SIatmFW to the end of seaice_growth.F.
42      - add diagnostic of the actual sublimation freshwater flux (that is 0. ifndef
43       SEAICE_ADD_SUBLIMATION_TO_FWBUDGET) and of the latent heat flux (evap+sublim).
44      - bug fix : frWtrAtm needs a_FWbySublim ifdef SEAICE_ADD_SUBLIMATION_TO_FWBUDGET.
45      - bug fix : missing part to Martin's r_FWbySublim pathological case fix.
46    o verification 1D_ocean_ice_column:
47       made model domain truly 1x1x23 instead of 5x5x23 with only center cell (3,3,:) wet
48       update results
49    o pkg/diagnostics:
50     - Implement setting of "Post-Processed" diagnostics (corresponding to gdiag(5)='P')
51       which are not filled-up but computed from other diags ; In this case, the mate
52       diag points to the primary (filled-up) diag to used for post processing.
53     - Update Velocity-potential computation using post-processed diag framework.
54     ==> Change the ordering of fields and time-periods in MDS output file
55       when using periodic averaging: now writes one time record with the full set
56       of fields for this time period, then the next time reccord (it used to be
57       one field with the full set of time records then the next field).
58         Note: this is now similar to NetCDF (MNC) output file. <==
59    
60    checkpoint62z (2011/06/21)
61    o adjoint monitor:
62     - Add adjoint monitor output for packages exf, seaice
63       and update relevant testreport output
64    o pkg/seaice:
65     - re-order diags inits so that they appear in order in available_diagnostics.log
66     - added diags: hsnow thermo. rates of change, area preceeding ridiging process,
67       area/heff/hsnow preceeding thermodynamic growth/melt.
68     - modified diag: SIdA; output actual effect, as the description states.
69     - modified description: SIqneti, SIqneto, SIuheff, SIvheff, SIdAb*, HSNOW.
70     - retired redundant diags: SIyneg, SIfice, SIsnwice, SIthdgrh.
71       (SIyneg->SIdHbOCN; SIfice->SIdHbATC; SIsnwice->SIdHbFLO;
72        and SIthdgrh->SIdHbOCN+SIdHbATC+SIdHbATO)
73     - modified diags (2) : switch all SIdA*, SIdH*, SIdS* from delta to rates.
74     - added diagnostics for seaice generic tracers (SItr*).
75     - added SItrUnit and SItrNameLong run time param (for SItr* diags).
76     - in diag names, replaced 'PrTh' abbrev. of 'preceeding thermo' with 'PT'.
77     I. Fenty: 18-Jun-2011:
78     Minor changes to seaice package:
79     1) Retired old variables (A22, SEAICE_lhsublim, areaMax, areaMin, hiceMin) and
80        added some new ones (SEAICE_area_reg, SEAICE_hice_reg, SEAICE_area_floor)
81       - Differentiated "regularization variables" from "floor variables"
82        * areaMin became SEAICE_area_reg (old A22) and SEAICE_area_floor
83        * hiceMin became SEAICE_hice_reg (old hiceMin)
84          (with _reg meaning regularization variable)
85       - SEAICE_lhSublim becomes lhSublim, the sum of SEAICE_lhEvap and SEAICE_lhFusion
86        so as to ensure energy conservation when going between phases
87      - A22 was not used anywhere
88     2) Changed regularization procedure for heffActual and hsnowActual to ensure
89        well-boundedness and smooth adjoint in seaice_growth.F
90     3) Fixed a bug where seaice_solve4temp would not recognize ice-free grid cells
91        because the old regularization always set heffActual >= 0.05 cm
92     4) Changed the model so that the default behavior is to put a small (10^-5) "floor"
93        on AREA when HEFF > 0.
94      - went from requiring ALLOW_PRECLUDE_INFINITESIMAL_AREA to be defined to
95        requiring that DISABLE_AREA_FLOOR *not* be defined
96     Affected verifications:
97      - 1D_ocean_ice_column (output.txt output_adm.txt)
98      - global_ocean.cs32x15 (output.seaice.txt output_adm.seaice.txt)
99    o pkg/diagnostics:
100      - move MNC code from diagnostics_out.F into new diagnostics_mnc_out.F (2 S/R).
101      - rename S/R GETDIAG to DIAGNOSTICS_GET_DIAG and change type of 1rst argument
102        (was _RL, now integer) with option = 0 to retrieve all levels.
103      - add pieces of code to compute velocity potential at each level (new diagnostics
104        PhiVEL, works only when UVELMASS & VVELMASS are also turned on);
105        for now, using same params as CG2D (target-resisual, max Nb of iter ...).
106      - fix few issues with counter diagnostics in diagnostics_setdiag.F &
107        diagstats_setdiag.F (if diagnostic counter is itself a counter diag)
108        and in diagnostics_fract_fill.F (do not need a valid pointer for the
109        diagnostics counter-mate); check that definition of counter-diagnostic
110        includes a valid counter-mate (in diagnostics_set_levels.F).
111    o model/src (rStar):
112      - add rStar scaling factor in diags_phi_hyd.F (similar to calc_grad_phi_hyd.F);
113        affect solution only if z* with full pressure in EOS;
114        update output of test-exp global_ocean.90x40x15.
115    o pkg/seaice:
116      - introduce siEps=1e-5 parameter
117      - use areaMax in AREA update (part 4), consistent with ridging step (part 2.5).
118      - re-organize SEAICE_ADD_SUBLIMATION_TO_FWBUDGET code.
119      - introduce ALLOW_SITRACER and seaice_tracer_phys.F to handle generic seaice tracer.
120        For now it covers, and was tested for, ice salinity and age (attached to HEFF),
121        as well as ice cover age and ridging index (attached to AREA).
122        For now the run time parameters (in data.seaice/SEAICE_PARM03) are
123        SItrName (e.g. 'age') and SItrMate ('HEFF', which is the default, or 'AREA').
124        Up to SItrMaxNum=3 tracers can be used simultaneously.
125    o pkg/salt_plume:
126      -introduce SPsalFRAC run time parameter that sets the fraction of the
127       salt by-product of ice growth (SPsalFRAC*(1-SIsalFRAC)*salt typically)
128       that gets vertically redistributed (fluxed down) by pkg/salt_plume.
129    o model debug options:
130      - Switch reading of debugMode from S/R INI_PARMS (parameter file "data", stored
131        in PARAMS.h) to S/R EESET_PARMS (parameter file "eedata", stored in EEPARAMS.h).
132      - Refine debug-msg printing selection (3 new levels):
133        debugMode  : controls printing of debug messages (sequence of S/R calls).
134        debugLevel : controls printing of algorithm-relevant auxiliary/debug messages
135         debLevZero =  0 ; /* level of disabled aux. msg printing */
136         debLevA =  1 ; /* level of minimum  aux. msg printing */
137         debLevB =  2 ; /* level of low aux. print (report read-file opening)*/
138         debLevC =  3 ; /* level of moderate debug prt (most pkgs debug msg) */
139         debLevD =  4 ; /* level of enhanced debug prt (add DEBUG_STATS prt) */
140         debLevE =  5 ; /* level of extensive debug printing */
141        New debugLevel default: with default debugMode value (=F),
142          = 2 (debLevB) or = 1 (debLevA) in case ALLOW_AUTODIFF is defined.;
143          and if debugMode=T, default debugLevel = 4 (debLevD).
144        Relation with previous settings:
145         debLevB (=2) corresponds to former debLevA (=1)
146         debLevD (=4) corresponds to former debLevB (=2)
147        Note:
148         a) if debugLevel=0, skip WRITE_GRID call when nIter0 > 0 (same as before);
149         b) default debugLevel=1 is convenient in AD runs (avoid many file opening msgs);
150            to recover previous default, set debugLevel=2 (e.g. AD-test hs94.1x64x5)
151      - Add new parameter (printResidualFreq, read from PARM02 namelist) to print
152        detailed CG solvers convergence; off (=0) by default, except if debugLevel=5.
153    o pkg/obcs:
154      - change OBCSfixTopo default from True to False (should not change the results);
155        keep OBCSfixTopo=T in verification-exp. seaice_obcs.
156    o pkg/thsice:
157      - fix bug in thsice_calc_thickn.F (was introduced in version 1.18) in
158        2nd layer seaice sublimation (unlikely to happen)
159      - use Interior mask for OBCS in thsice_advection.F (similar to what is
160        done in gad_advection & seaice_advection).
161    o adjoint:
162      bug fix spotted by Gael Forget:
163      seaice_advection and thsice_advection still had
164      legacy CPP options to avoid CS corner updates for adjoint
165    o pkg/seaice:
166      => Change some of the defaults (2011/05/29):
167         - change SEAICEuseFluxForm default (from False to True)
168         - change DIFF1 default (from 0.004 m/s to 0. m/s)
169         And print warnings if DIFF1 is not set in data.seaice and centered
170          avection scheme is used without any diffusion.
171      also:
172      - fix seaice_diffusion calls in default AdvScheme part of seaice_advdiff.F;
173      - set SEAICEdiffKh[] default in the same way as SEAICEadvSch[]
174      - stop if DIFF1<>0 with SEAICEadvScheme <> 2, if DIFF1<>0 with any
175        other non-zero SEAICEdiffKh[] diffusivity, if SEAICEadvSalt=T with
176        #undef SEAICE_VARIABLE_SALINITY, if SEAICEadvAge=T with #undef SEAICE_AGE.
177      update results of test exp.:
178         lab_sea: output.fd (switch to AdvScheme=33 with diffKh=20)
179             output.hb87, output_adm.evp (SEAICEuseFluxForm=T and diffKh=200)
180             output_adm.noseaicedyn (SEAICEuseFluxForm=T)
181         offline_exf_seaice: output.seaicetd, output_adm (SEAICEuseFluxForm=T)
182         seaice_obcs: output (SEAICEuseFluxForm=T)
183      and prescribe old default for SEAICEuseFluxForm (=F) and DIFF1 (=0.004)
184          for standard fwd & AD lab_sea tests (to keep the same output).
185    o pkg/seaice/seaice_growth.F:
186      - use Ian Fenty's capping formulas for actual ice
187      thickness thoughout EVOLUTION branch.
188      - put treatment pathological case #2) in CPP brackets
189      (ALLOW_AVOID_INFINITESIMAL_AREA, undef by default).
190      - update global_ocean.cs32x15 and 1D_ocean_ice_colum results accordingly.
191    o pkg/seaice:
192      - seaice_diffusion.F : remove the min(DX,DY) factor permanently;
193      pass the Laplacian diffusivity (in m^2/s) diffKh as a parameter;
194      also pass fac as a param, which can be 1. (to update the tendency
195      field) or the time step (to update the field itself).
196      - seaice_advdiff.F: for multidim, call seaice_diffusion with
197      e.g. SEAICEdiffKhHeff and with fac=1; for single-dim, call
198      seaice_diffusion with e.g. SEAICEdiffKhHeff and with fac=time step.
199      - SEAICE_PARAMS.h, seaice_readparms.F, seaice_check.F :
200      hooks to handle SEAICEdiffKhHeff, SEAICEdiffKhArea, etc.
201    o pkg/seaice:
202      diffusion with centered advection scheme (diffus.F & advect.F):
203      - simplify S/R DIFFUS (put deltaT & DIFF1 factor outside, move EXCH outside)
204        to just compute the laplacian of input-field.
205      - unroll k loop (harmonic,biharmonic diff) in advect.F to save 1 exch call.
206      - fix flux-form version in diffus.F to conserve tracer.
207      update output of lab_sea.fd & lab_sea.hb87 (1rst set of modif affects
208       machine truncation) and lab_sea.salt_plume (conservative flux-form modif)
209    
210    checkpoint62y (2011/05/26)
211    o pkg/seaice:
212     - seaice_growth.F : in EVOLUTION branch, always include
213       a_QSWbyATM_cover in qnet (as it should be).
214     - verification/global_ocean.cs32x15 : update results accordingly
215       (output.seaice.txt output_adm.seaice.txt).
216    o pkg/seaice + obcs:
217     - use maskInW & maskInS in multi-dim advection and biharmonic diffusion:
218       equivalent of assuming no tracer gradient outside the OB region.
219       update output of seaice_obcs (uses DIFF1 <>0 => biharmonic diffusion)
220     - remove calls to OBCS_COPY_TRACER after EXCH calls (no longer needed
221       after changes above);
222     - obcs+seaice cleaning: apply seaice-tracer OB values to tracer field
223       only at OB location (instead of over a band of OLx width).
224    o pkg/seaice:
225     - fix wrong indices in old (non Flux-Form) diffusion default S/R diffus.F
226       (dxG(I+1, ...) changed to dxG(I, ...), no impact on Lat-Lon grid)
227    o pkg/obcs:
228      - split header file "OBCS.h" into 4 separated files:
229        OBCS_PARAMS.h, OBCS_GRID.h, OBCS_FIELDS.h & OBCS_SEAICE.h
230       Note: OBCS_PARAMS.h & OBCS_GRID.h can be included without OBCS_OPTIONS.h
231         (contain no conditional statement which depends on OBCS options).
232      - move "useOBCSYearlyFields" from "data.obcs" (hold in OBCS_PARAMS.h)
233        to parameter file "data.exf", namelist EXF_NML_OBCS (in EXF_PARAM.h).
234    o ctrl, cost, grdchk & autodiff pkgs:
235      - make options file more standard (like other {PKG}_OPTIONS.h file but
236        with AD_CONFIG.h); clean-up some of the included header files.
237    o pkg/obcs:
238      - do not mask tracer when applying OB (tracer == 0 could generate problems)
239      - apply tracer OB values to tracer field only at OB location (instead of
240        over a band of OLx width)
241      - clean-up obcs_apply_w.F & obcs_apply_eta.F (since less calls to these S/R)
242      - remove OBCS_MULTIDIM_OLD_VERSION code in gad_advection.F and remove
243        obcs_apply_tloc.F & obcs_apply_sloc.F
244    o obcs in model/src:
245      - call OBCS_APPLY_W only if NonHydrostatic.
246      - call OBCS_APPLY_ETA only if NonLinFreeSurf.
247      - reset dEtaHdt and wVel to zero outside OB interior region ;
248      - leave tracer unchanged outside OB interior region: This has no effect
249        on the solution but just to prevent unrealistic tracer value outside OB.
250      - zero out velocity outside OB interior region: This has no effect on
251        the solution but just to prevent unrealistic velocity outside OB.
252    o obcs and non-lin free-surf:
253       move call to OBCS_APPLY_R_STAR from update_r_star.F to calc_r_star.F
254       and call to OBCS_APPLY_SURF_DR from update_surf_dr.F to calc_surf_dr.F
255       + add argument "etaFld" to OBCS_APPLY_R_STAR & OBCS_APPLY_SURF_DR:
256       this fixes missing EXCH + get consistent eta OB value (+ fix restart).
257       update results of test-exp. exp4(nlfs).
258    o exp4 (nlfs) test-exp:
259       use OBC for Eta at Western & Eastern OB (to test prescribing Eta
260       with NonLin-FreeSurf); update output.nlfs.txt
261    o obcs and 2d/3d solver norm:
262       use interior masks (maskInC) to cancel out cg2d & cg3d matrix coeff at OB
263       and outside OB interior region (will allow to place OB further inside the
264       domain). Depending on the domain, can affects cg2d-Norm (previous
265       cancellation outside OB was only partial), e.g. in exp4 & obcs_ctrl,
266       and cg3d-Norm (previous Norm was computed before canceling OB terms),
267       e.g. in tutorial_plume_on_slope.
268      - update output of exp.: exp4 (x2), obcs_ctrl and tutorial_plume_on_slope.
269    o pkg rbcs:
270      - split RBCS.h into 3 files: RBCS_SIZE.h, RBCS_PARAMS.h & RBCS_FIELDS.h
271      - add capability to apply relaxation to horizontal velocity uVel & vVel.
272    o pkg/grdchk: add gradient check for control variable xx_shifwflx
273    o pkg/shelfice/shelfice_init_fixed.F
274      fix CPP-flag combinations
275    o pkg/seaice: Merge iceage code of Pierre Rampal
276      * update/change/correct ice age calculations
277      * add age updates for pathological cases
278      Probably needs more testing...
279    
280    checkpoint62x (2011/05/13)
281    o pkg/mom_vecinv:
282       high-order vorticity scheme: use interior masks (maskInW & S)
283       to zero-out (outside OB) gradient of vorticity.
284    o verification exp.:
285       turn on "useEnergyConservingCoriolis" (better discretisation) in exp.
286       hs94.128x64x5 and seaice_obcs ; update results.
287    o pkg/obcs:
288      fix bug in OBeta for YZ sections in obcs_exf_load.F
289    o pkg/ctrl, pkg/shelfice, and optim:
290      - add new control variable xx_shifwflx (fresh water flux underneath ice
291        shelves). This is almost as tedious as obcs-ctrl, because the
292        variables needs its own mask.
293      - add a cost function term that penalizes the deviation of xx_shifwflx
294        from the first guess (zero) in analogy to other control variables
295    o pkg/shelfice:
296      - start basic adjoint
297    o pkg/ctrl:
298      - remove extra 2D field "for good measure" when initializing in
299        ctrl_set_globfld_[xy/xz/yz].F
300      - replace hard coded precision 32 (a bug) in ctrl_map_ini_gen by ctrlprec
301      - improve error messages in ctrl_set_unpack_*
302    o OBC implementation in momentum:
303       use interior masks (maskInC,W & S) in momentum S/R:
304       - multiply divergence, tension and some del^i.u or del^j.v by maskInC
305       - multiply del2u,del2v by maskInW/S (biharmonic viscosity)
306       - multiply horiz. grad of vorticity by maskInW/S (in Leith scheme)
307       - multiply gradient of wVel by maskInW/S in del2w calculation (NonHyd)
308       Motivation: fix/clean implementation of OBC with biharmonic-viscosity
309        (and also with Leith/Smagorinsky harmonic-viscosity).
310       Update output of experiment dome and exp4 (+nlfs).
311    o exp4 test-exp:
312      - turn on: nonHydrostatic, exactConserv, viscA4 (with momDissip_In_AB=F)
313        and prescribe time-varying OB (without pkg/exf) for zonal-velocity
314        at Western & Eastern Boundaries (+/- 1 per-cent); Also prescribe
315        time-varying OB at Western-side for wVel (NonHyd); update output.
316      - add secondary set-up (.nlfs) using NonLin FreeSurf (z*) + mom_vecinv
317        and biharmonic-viscosity ; also use prescribed time varying OB.
318    o pkg/obcs:
319      fix bug in OBWeta,OBWeta indices in obcs_apply_r_star.F
320    o model/src:
321      - fix startTime setting when baseTime<>0 & nIter0=0 are specified ;
322      - initialise startTime & nIter0 with unlikely values: allows to set one
323        from the other without ambiguity.
324    o seaice_obcs test-exp.:
325      add small diffK4T,S to test biharmonic diffusivity with OBCS ; update output.
326    o pkg/obcs:
327      - remove calls to OBCS_COPY_TRACER after EXCH for T,S & pTracer:
328        no longer needed with maskInC,W,S in pkg/generic_advdiff.
329    o pkg/seaice:
330      - retired SEAICE_SALINITY and SEAICE_salinity in favor of
331        SEAICE_VARIABLE_SALINITY and SIsalFRAC, respectively.
332      - fixed bug in the initialization of sea ice salinity variable HSALT
333        in seaice_init_varia.F  (removed dependence on ICE2WATR)
334    o fizhi-cs test exp.:
335       switch reference output convention for these 2 non-standard test-exp,
336        from: pgi  6.1-5 on faulks (FC.6, -of linux_ia32_pgf77+authors_fc5)
337          to: ifort 11.1 on baudelaire (FC.13, -of linux_amd64_ifort11)
338       reason: faulks might get retired soon and pkg/fizhi has still Pb with gfortran
339    o model/inc:
340      - change type of PmEpR array (from _RS to _RL) to fix restart (with "-use_r4")
341        of exp. global_ocean.90x40x15 (Suncronous time-stepping + Real-FW + NonLin-FS)
342    o pkg/seaice:
343      - fix calculation of saltFlux and saltPlumeFlux when using SEAICE_SALINITY
344    o verification/lab_sea, 1D_ocean_ice_column, seaice_obcs, global_ocean.cs32x15
345      - updated output*.txt files due to bug fixes in salt, saltPlumeFlux,
346        and initial HSALT
347    
348    checkpoint62w (2011/04/26)
349    o pkg/mom_fluxform:
350      - fix calculation of del2u & del2v (no-slip BC) when using Non-Lin Free-Surf.
351      - use parameter "sideDragFactor" in no-slip BC side-drag part.
352      - update output of exp. global_ocean.90x40x15
353    o pkg/mom_vecinv:
354      mask del2u & del2v (no effect on results, but cleaner & closer to mom_fluxform)
355    o update seaice exp.:
356      use more consistent parameter values (remove "backward compatability only":
357       ICE2WATR, SEAICE_lhSublim, SEAICE_cpAir, SEAICE_rhoAir + set rhoConstFresh)
358      related to thermodynamics seaice. Update output (fwd+AD) of exp.:
359       1D_ocean_ice_column (x2), lab_sea (x8), ioffline_exf_seaice (x2) & seaice_obcs
360    o update test-exp global_ocean.90x40x15:
361      o use default CD_CODE_OPTIONS file (Adams-Bashforth on CD Mom & Coriolis).
362      o increase Overlap size from 2 to 3 (to allow to test bi-harmonic Visc.)
363      o new pickup-files from a 100.yr run with pkg/down_slope (input.dwnslp params)
364      o turn on zStar & viscA4 in standard set-up (dir input/)
365        and update output files: output.txt & output.dwnslp.txt
366    o new AD-test experiment: obcs_ctrl
367      (From Matt MITgcm_Contrib/SOSE/BoxAdj) to test OBCS as control vector.
368    o pkg/dic:
369      fix two bugs in handling water vapour pressure in carbonate chemistry
370      and air-sea fluxes. Found by Val Bennington and Galen McKinley
371      (add DIC Option = WATERVAP_BUG to recover old results)
372      update output of tutorial_global_oce_biogeo (fwd+AD) & tutorial_dic_adjoffline
373    o adding allowInteriorFreezing option to check for water below freezing point
374      at depth and bring the negative heat anomaly to the surface level
375    o pkgs _fields_load:
376      - extend GET_PERIODIC_INTERVAL to deal with non-periodic case (from pkg/rbcs)
377      - use new S/R GET_PERIODIC_INTERVAL in pkgs:
378        bulk_force, cheapaml, cfc, dic, obcs (+ ctrl/ctrl_get_gen_rec), offline and
379        rbcs to get interpolation weights and time reccord number.
380      - fix multi-threading in aim_fields_load.F
381      - apply EXCH to temp arrays [0,1] after reading in dic_fields_load.F
382    o external_fields_load:
383      new S/R GET_PERIODIC_INTERVAL to calculate which time-record (and linear
384       interpolation weights) to use in a periodic time-series ; do not divide by
385       time-step to convert to integer:
386       - this fixes case where externForcingPeriod is not multiple of time-step
387          (Thanks to Christopher L. Wolfe)
388       - this fixes case where externForcingPeriod is an odd multiple of time-step
389         (was wrong by half of time-step); update results of tutorial_global_oce_in_p.
390      store index of time-record which is currently loaded:
391       - works without any assumption on sequence of calls to EXTERNAL_FIELDS_LOAD ;
392       - needed for the adjoint but not yet used because of extensive recomputations;
393         (to be fixed soon)
394    
395    checkpoint62v (2011/04/02)
396    o verification/1D_ocean_ice_column added to test Ian Fenty's
397      pkg/seaice_growth.F modifications for improving sea ice code differentiability
398    o update output of exp4, internal_wave, seaice_obcs, tutorial_plume_on_slope
399      (new velocity statistics after changing maskInW & maskInS definition)
400    o pkg/generic_advdiff with OBCS:
401      use maksInW & maskInS in advective flux and in biharmonic diffusion calculation:
402      equivalent to assumption of no tracer gradient outside the OB region.
403      This will affect the results if using obcs+biharmonic diffusion.
404      update output_adm.txt of experiment bottom_ctrl_5x5 (not expected since no obc)
405    o pkg/obcs:
406      change definition of maskInW & maskInS: leave OB edges inside (maskIn=1)
407      (e.g., maskInW(OB_Ie)=1 ) so that velocity normal-component at OB is still
408      in Interior region. No impact on solution but affects Velocity monitor stats.
409    o pkg/ptracers (adjoint)
410      New option AUTODIFF_PTRACERS_SPLIT_FILES for writing separate
411      tape file for each tracer
412    o model/inc/src and pkg/autodiff: add parameters that allow to turn
413      of parts of the adjoint code at run time. For now, there are only
414      useKPPinAdMode, useGMrediInAdMode, and useSEAICEinAdMode. These
415      parameters are set in data.pkg.
416      This is the lazy coward's version of doing this, but still useful for
417      debugging. In order to do it right, everything needs to be moved to
418      pkg/autodiff.
419    o pkg/autodiff: fix global_sum_tile_ad.F by resetting adsumPhi at
420      the end; this fixes the adjoint balancing code for open boundaries.
421    o pkg/ctrl:
422      - change behavior of xx_${varname}period to be analogous to exf-conventions:
423        xx_${varname}period =   0.,  means time-independent control part
424        xx_${varname}period = -12., means one-year-periodic monthly control part
425      - introduce helper routine ctrl_init_rec (part of ctrl_init.F) to
426        clean up ctrl_init a little, remove unused variables
427      - ctrl_init: fixed the handling of the start/endrec for obcs-variables
428      - move "call cal_GetMonthsRec" from s/r ctrl_get_gen to s/r ctrl_get_gen_rec
429    
430    checkpoint62u (2011/03/15)
431    o model/src:
432      - for the adjoint, change NonLin-FreeSurf initialisation sequence: fill-in
433        h0Fac from INITIALISE_FIXED and reset hFac to h0Fac in INITIALISE_VARIA ;
434      - in initialise_varia.F (except for ALLOW_DEPTH_CONTROL) remove 2nd call to
435        INI_DEPTHS, INI_MASKS_ETC & INI_LINEAR_PHISURF.
436    o pkg/ctrl/obcs/ecco:
437      - remove obsolete, unused, and partially broken code:
438        ctrl_obcsvol/ctrl_obcsbal/ctrl_volflux and code within
439        ALLOW_CTRL_OBCS_BALANCE
440      - put a stop statement into ecco/cost_obcsvol.F, but also add
441        cost_obcsvol to ecco_ad_diff.list
442    o pkg/ecco: fix counting cost function contributions for obcs (code
443      by Matt M.) and diffkr for diagnostics
444    o pkg/ecco, pkg/ctrl, pkg/grdchk:
445      add cost penalty terms for initial uvel, vvel, eta controls
446      and I/O for prior error files
447    o pkg/mdsio:
448       move mds_check4file.F from eesupp/src to mdsio_check4file.F ; add option
449       (new argument) to check for tiled file in mdsioLocalDir : this fix the
450       restart from pickup_som , pickup_dic (& dic_co2atm) with mdsioLocalDir.
451    o pkg/ctrl:
452     - ctrl_obcsbal.F, ctrl_obcsvol.F: replace last calls of ctrl_getrec by
453       ctrl_get_gen_rec, put a stop statement into ctrl_getrec. Remove
454       unused and superfluous variables
455     - ctrl_get_gen_rec.F: catch the case of xx_genperiod=0.
456    o pkg/ecco
457     - enable adjoint of Stevens OB
458    o pkg/ctrl/ecco/grdchk:
459      - remove global declaration of tmpfldx/yz and tmpfldx/yz2.
460        Fortunately, we do not have any tests for the numerous cpp-flagged
461        option of "obcs as control parameters" so we will never know
462        if this is an improvement (but at least now things compile).
463      - remove an obsolete initialization from ecco_cost_init_barfiles.F
464      - fix some problems within never used ifdefs to make the code compile
465    o pkg/obcs:
466     - Refine Interior mask definition to work with more complex OB (e.g.
467       if OB_Ie < OB_Iw); In case default setting is not sufficient, allows to
468       read in Interior mask from file. Check if Interior mask is consistent
469       with OB list of indices.
470    o pkg/seaice
471     - beginning code for a seaice tracer package,
472       but currently only used for seaice age: SEAICE_AGE
473       SEAICE_num = 4
474       iTracer = 1: area-weighted ice age
475               = 2: volume-weighted ice age
476               = 3, 4: template for one-year vs. multi-year ice
477       data.seaice has new namelist SEAICE_PARM03 for arrays related to
478       SEAICE_num
479    
480    checkpoint62t (2011/03/05)
481    o pkg/obcs:
482     - obcs_apply_uv.F: change to a 2 steps method, first tangential component;
483       then normal component. This ensures that the normal component is set
484       correctly even when it conficts with tangential setting from an other OB.
485       Affects results of test-experiment seaice_obcs: update the output.txt
486    o pkg/obcs:
487     - add code to monitor statistics of dynamical fields at OB.
488     - take OBCS_BALANCE code out of obcs_calc.F into new S/R OBCS_BALANCE_FLOW :
489       - fix to OBCS_BALANCE code (right hFac ; deal with simple OB intersection).
490       - change default: balance the Net inflow through all OB (instead of balancing
491         each OB separately); keep the old method if setting OBC_balanceFacX < 0.
492     - switch on useOBCSbalance in dome experiment: only correct Western OB outflow
493       to match Nortern OB inflow (OBCS_balanceFacN=0).
494    o pkg/seaice:
495     - redefined actual sea ice age to be ICEAGE/HEFF ifdef SEAICE_AGE_VOL
496    o pkg/seaice (seaice_growth v 1.113):
497     - reverting seaice_growth to v 1.111 in order to have code with exact bit
498       compatibility with MITgcm_contrib/ifenty/Fenty_seaice_thermo_code_merge
499       CPP option SEAICE_OCN_MELT_ACT_ON_AREA removed in v 1.112 is reintroduced
500       runtime flag SEAICEareaFormula is kept but is inactive
501    o model/src:
502     - add new param to scale curvilinear grid distance and area when using
503       a different sphere radius from the grid-files.
504     - test/check multi-threads EXCH applied to local variable (cg2d_x)
505    o adjoint:
506     - enable adjoint of Stevens OB
507     - add dummy_in_dynamics to enable extraction of ADJrhoinsitu
508       (a bit delicate because of potentially modified adj. common block structure;
509       current switch is ALLOW_AUTODIFF_MONITOR_DIAG, could be changed later)
510    
511    checkpoint62s (2011/02/15)
512    o pkg/seaice (seaice_growth v 1.112):
513     - introduce SEAICEareaFormula run time parameter, which selects the recipe for
514       computing the ice cover tendency from effective thickness tendencies. Include
515       Ian Fenty's formula.
516     - remove 'undef SEAICE_OCN_MELT_ACT_ON_AREA' which may now be achieved using
517       SEAICEareaFormula.
518     - simplify notations for the various d_HEFF/d_AREA terms.
519    o pkg/gmredi:
520     - add Boundary-Value-Problem bolus transport (Ferrari etal, OM 2010) code
521       from Christopher Wolfe (UCSD); add partial cell factor in vertical derivative;
522       add a verification test-run (front_relax.bvp) to test GM_useBVP.
523    o pkg/seaice (seaice_growth v 1.111):
524     - for SEAICE_DO_OPEN_WATER_GROWTH, replace Gael's implementation with Ian's.
525     - the new SEAICE_DO_OPEN_WATER_MELT allows open-water air-sea heat fluxes to
526       also melt ice.
527    o pkg/seaice:
528     - McPhee formula for Ice-Ocean fluxes (provided by Ian Fenty).
529     - can be used by #define MCPHEE_OCEAN_ICE_HEAT_FLUX in SEAICE_OPTIONS.h
530    o pkg/cheapaml:
531     - from Nico Wienders: New version of this package.
532    o pkg/flt:
533     - add CPP options to prevent floats to re-enter the opposite side of
534       a periodic domain (default: keep periodicity)
535    o pkg/gmredi:
536     - apply exchange to GM_PsiX,GM_PsiY to get valid values near CS-corners
537       (needed for multi-dim advection).
538     - switch on GM Advective form in global_ocean.cs32x15 and update output.txt
539    o model/src:
540     - fix wrong re-setting of addMass array (ALLOW_ADDFLUID) for atmospheric run.
541    o tutorial_tracer_adjsens
542     - extend to NLFS and replace maskC by hFacC
543       (change reference output accordingly)
544    
545    checkpoint62r (2011/01/24)
546    o testreport:
547     - add option -deloutp (-do) to remove output file after successful run
548     - add option -mfile (-mf) for MPI machile-file and for each test-exp,
549       extract exact list of procs from this file ; adjust COMMAND by
550       replacing TR_MFILE & TR_NPROC with local machile-file & Nb of MPI procs.
551    o pkg/ecco: replace old ineffective way of penalizing deviations from
552      first guess (of obcs) with code by Matt Mazloff
553    o pkg/ctrl: add code that allows the use of ALLOW_OBCS?_CONTROL without
554      exf/cal
555      - ctrl_init: fix initialisation (computation of diffrec) for obcs-ctrl
556        and handle case of obcs?period == 0
557        Not affected by these changes: There is still an inconsistency in
558        the computation of start/endrec for the obcs variables for ALLOW_CAL
559        defined (see comment by Menemenlis, 7-Mar-2003)
560      - make S/R ctrl_get_gen_rec return something meaningful even if
561        ALLOW_CAL is not defined
562      - ctrl_getobcs?: simplify code so that it does not need to use
563                       S/R exf_swapfields
564    o testreport:
565       allow to test MPI with different number of processors for each experiment:
566       create file "SIZE.h.mpi" in each build dir.
567       Note: update of "-command" argument not yet implemented.
568    o model/src, pkg/autodiff, pkg/ecco, pkg/seaice:
569      alleviate the need for additional 3D tapes when using
570      the non-inear free surface in the adjoint. This is done
571      by adding an 'update' of hfacc etc. to their current
572      value at the beginning of forward_step.F.
573    o pkg/seaice
574      seaice_lsr: move stress-divergence computations out of outer pseudo-
575      timestepping loop
576    o pkg/obcs/obcs_prescribe_read.F: move 'CALL OBCS_EXTERNAL_FIELDS_LOAD'
577      up, so that the calls of the ctrl_* subroutines are really at the end
578      of the routine.
579    o pkg/gmredi:
580      allow to specify a 2-D horizontal map and a 1-D vertical profil
581      as scaling factor for Isopycnal diffusivity (Redi) and GM diffusivity.
582    o pkg/seaice:
583      move lsr iterations from seaice_dynsolver to seaice_lsr.
584    o pkg/seaice:
585      reduce memory footprint of seaice mutldim advection tapes,
586      by using a 2D tape independent of the generic_advdiff ones,
587      and setting GAD_AREA=1 etc. rather than GAD_AREA=101 etc.
588    
589    checkpoint62q (2010/12/29)
590    o model/src:
591      - check horizontal grid-spacing for unset or zero/negative values.
592      - change AD test hs94.1x64x5 to be truly a 2-D set-up.
593    o pkg/flt:
594      - use (recent) mdsio S/R MDS_READVEC_LOC instead of local FLT_MDSREADVECTOR
595      - precision of input and output files set according to readBinaryPrec
596        and writeBinaryPrec (previously always 64.b), pickup remains at 64 bits.
597      - initial float position from tiled file was not converted to index space
598        (looks like a bug): fixed to make it similar to initial pos. global file.
599    o global_ocean.cs32x15:
600       change SIZE.h of AD set-up to get same tiling as with MPI.
601       Update output_adm, output_adm.thsice (pass@14) & output_adm.seaice (fail@11)
602    o model/src:
603       add flag to control printing of domain fields (bathymetry, hFac ...) in
604       ini_mask_etc (call to plot_fieds_xy*).
605    o pkg/thsice:
606       if useEXF, some forcing fields are not valid in overlap: fixed by computing
607       over the interior only + apply EXCH at the end (like with SEAICE advection).
608    o pkg/mdsio:
609      - add 2 arguments to S/R MDS_PASS_R4/8toRL/S for overlap size of buffer
610        to copy to/from, so that it can be used to replace MDS_PASS_WH_R8toRL/RS.
611      - change barrier call for safe multi-threads access to 3-D shared buffer.
612      - MDS_READ/WRITEVEC_LOC use buffers from MDSIO_BUFF_3D.h (instead of local ones)
613      - replace call to MDS_PASS_WH_R4/8toRL with call to MDS_PASS_R4/8toRL and
614        remove the 4 S/R MDS_PASS_WH_R4/8toRL/S.
615    o pkg/flt:
616      - add fourth-order Runge-Kutta integration
617      - add basic exch2 support (only 1 facet supported so far!)
618    o pkg/mdsio+rw:
619      new S/R to read local (or tile independent) vector (read counterpart of
620       mds_writevec_loc, and front-end write_glvec_rl/rs).
621    o global_ocean.cs32x15: additional input_ad.seaice experiment
622        that uses pkg/seaice rather than pkg/thsice.
623        (using multidim advection for seaice)
624    o towards more F95 syntax for array specification in namelist:
625      - change "data.diagnostics" (data.ptracers was changed before checkpoint62p)
626        of all verification experiments.
627           e.g.:    line: fields(1,3)='ETAN    ','ETANSQ  ',
628          was changed to: fields(1:2,3)='ETAN    ','ETANSQ  ',
629      - finish adding "-DNML_EXTENDED_F77" to DEFINES list in pgf77 and g77 optfiles
630    o global_ocean.cs32x15: additional input.seaice experiment
631        that uses pkg/seaice rather than pkg/thsice.
632    
633    checkpoint62p (2010/12/17)
634    o pkg/thsice: rename (ad tape index) iicekey as ticekey, and move it
635        to THSICE_SIZE.h to avoid conflict with pkg/seaice.
636    o pkg/seaice: add seaice_diffusion.f seaice_map_thsice.f to adjoint.
637        allow for use of multim. advection in seaice adjoint.
638    o pkg/seaice: add diagnostics for snow precipitation and sublimation flux
639      - first attempt to close budgets by taking into account the freshwater
640        flux implied by the sublimation of snow and ice. So far only the
641        volume budget is closed, turn on with soon-to-be-retired-again CPP-Flag
642        SEAICE_ADD_SUBLIMATION_TO_FWBUDGET
643    o eesupp/src:
644      new S/R with new option (NML_EXTENDED_F77) to change array specification
645      from F95 standard to commonly accepted extended F77 form.
646      This would allow to use F95 syntax in namelist (needed with gfortran 4.4.5)
647      and to revert back to the original syntax (with -DNML_EXTENDED_F77)
648      for less tolerant f77 compiler (e.g., pgf77, g77).
649    o globalFiles:
650      commented out in parameter file "data" since it's not safe with MPI
651      (e.g., wrong on aces); keep it if useSingleCpuIO=T (but not doing much
652      in this case); no longer commented out in restart test (tst_2+2).
653    o add adTapeDir to specify a special directory where adjoint tapes are
654      written/read (adread_adwrite.F). adTapeDir is specified in data/PARM05
655      and cannot be used together with mdsioLocalDir.
656    o nesting pkgs:
657      - packages_init_variables : put call to OBCS_INIT_VARIABLES in last position
658      - update Gianmaria's Nesting pkgs (from Contrib/nesting_sannino)
659      - add parameter files + utils dir + output from short run on beagle.
660    o pkg/seaice:
661        fix seaice_growth.F store directives; update results of exp. lab_sea.ad
662    o pkg/seaice: explicitly store tsurfloc in seaice_solve4temp.F to avoid
663      unnecessary copying in adjoint code, requires new parameter NMAX_ITER
664    
665    checkpoint62o (2010/11/25)
666    o pkg/exf:
667      - change CPP option EXF_VERBOSE to run-time logical param exf_verbose.
668    o pkg/seaice:
669      - seaice_ocean_stress: split a loop for better vectorization of the
670        adjoint code
671      - seaice_growth.F: fix bug in conservation of freshwater connected to
672        capping of heff, put contribution into d_HEFFbyNEG
673      - replace irritating parameters SEAICE_latentWater/Ice and SEAICE_sensHeat
674        by something more sensible (parameters that are what their name implies)
675      - change some defaults, so that by default exf-parameters are used for
676        things like rhoAir, cpAir,latent/sensible heat parameters, in order
677        to reproduce the old results, many data.seaice now contain funny values
678        for cpAir and latent heat of sublimation
679    o packages_readparms.F: move exf_readparms up in line so that
680        exf-parameters are visible for other packages (e.g. seaice)
681    o debugMode & debugLevel=2:
682      - differentiate between debugMode & debugLevel=2:
683        debugMode: controls printing of debug messages (sequence of S/R calls).
684        debugLevel: controls printing of algorithm intermediate results and stats.
685      - remove "if debugLevel=2 => debugMode" but keep "debugMode =>  debugLevel=2";
686        => allows to print debug-stats without all sequence of call messages.
687      - switch control of debug print from debugLevel to debugMode in many S/R.
688    o pkg/obcs (obcs-sponge):
689        fix bug that was introduced on Oct 25 (in dynamics.F v1.151): put back the
690        call to OBCS_PRESCRIBE_EXCHANGES (need to exch gU,gV when using obcs-sponge)
691    o pkg/generic_advdiff:
692      - record overlap minimum size for each advection scheme;
693      - refine criteria on overlap minimum size;
694      - check and stop (in gad_check) if overlap size is too small.
695    o pkg/obcs:
696      - with ptracers: remove multiple calls to obcs_apply_ptracer (only done
697        once, in ptracers_implicit.F)
698      - with seaice: remove test on empty file name in obcs_apply_seaice (always
699        apply OB values when tile has OB)
700    o model/src, coriolis setting:
701      - integer parameter "selectCoriMap" (=0,1,2) replaces 3 logical
702        useConstantF, useBetaPlaneF, useSphereF ; can now read coriolis from
703        files (selectCoriMap=3) with any grid.
704      - add parameter "fPrime" for constant second Coriolis coeff (default=0).
705    o pkg/seaice/seaice_growth.F:
706        a few cosmetic changes that reduce the number of lines of code
707    o pkg/obcs: add boundary conditions following Stevens (1990)
708      - the code follows old MOM/NAOSIM code
709      - so far it is only implemented for the eastern and western boundaries
710        and NOT for pTracers
711    o pkg/rbcs:
712      - replace rbcsInIter by rbcsForcingOffset, the time in seconds at the
713        beginning of the first rbcs forcing period.
714      - add option rbcsSingleTimeFiles that makes rbcs read forcing data like the
715        offline package, i.e., one file per time, labeled by iteration number;
716        deltaTrbcs sets the timestep with which the data was generated;
717        rbcsIter0 is the forcing iteration corresponding to rbcsForcingOffset.
718      - rbcsForcingCycle=0 makes forcing non-cyclic.
719      - make arithmetic safe for negative times and odd forcing periods.
720    
721    checkpoint62n (2010/11/09)
722    o pkg/seaice:
723        fix masking in free-drift S/R ; update results of exp. lab_sea.fd
724    o pkg/obcs:
725       New S/R to copy tracer value from the OB location to narrow band region
726        (width = same as overlap) beyond the OB: preserve OB value (needed for
727        high-order scheme) which were overwritten by EXCH call if in overlap
728        region. Applied to theta, salt, ptracer and advected seaice variables.
729       With seaice: use maskInC in similar way as in gad_advection.F,
730        in seaice_advection.F and advect.F.
731       Update output of experiment seaice_obcs and change exp4 to test OBCS with
732        4th order Adv.Scheme. for pasive salt and ptracer.
733    o tools/genmake2:
734      - when looking for an optfile (not specified), only search for Fortran compiler
735        (remove sym-link test + setting of CPP + makedepend check + C-compiler check)
736      - in get_fortran_c_namemangling: use "$CC $CFLAG" to compile C test programm
737        (instead of "$MAKE genmake_test.o" since an existing Makefile can be wrong)
738      - set default for CPP to "cpp -traditional -P" (was the case without specifying
739        an optfile, but otherwise default was just "cpp".
740      - comment out PLATFORM=$p_PLATFORM (no idea where p_PLATFORM comes from)
741      - when "CC" is not set in the optfile, look for possible C compiler
742        (instead of just setting CC=cc)
743      - put back version v.169 modif (from 2008/02/15), was dropped in v.173 changes:
744        => add a ".F" to ".o" rule for source files with no "#include" (such as
745           port_rand.F); otherwise, default ignores FOPTIM and just uses FFLAGS.
746      - move gfortran before g77 in list of possible Fortran compiler (consistent
747        with reference compiler switch from g77 to gfortran)
748    o pkg/seaice:
749      o remove SEAICE_OLD_AND_BAD_DISCRETIZATION-code, add a test to
750        seaice_check that stops the model, when the CPP flag is used.
751      o seaice_growth.F: make capping of ice volume conserving by returning the
752        capped ice as freshwater to EmPmR. This does not change the verification
753        experiments but will change runs where the capping is acutally active
754    o change reference platform+compiler from faulks+g77 to baudelaire+gfortran
755      (except the 2 fizhi test exp.); update output of exp.: bottom_ctrl_5x5,
756         global_ocean.cs32x15 (icedyn, thsice, AD thsice), global_ocean_ebm (AD),
757         lab_sea (fd, hb87, salt_plume), MLAdjust (3/5) and vermix (dd)
758    o tools/genmake2:
759      - merge genmake_warnings & genmake_errors into 1 log file: "genmake.log")
760      - change DUMPSTATE default to false (can use "-ds" option to switch it to T)
761      - clean previous genmake log files before anything else.
762      - change Makefile to remove testreport log files (*.tr_log) and genmake log
763        files only with "CLEAN" target (instead of "Clean");
764    o pkg/generic_advdiff:
765      Change OBCS in multiDim advection (gad_advection.F):
766       Use maskInC to prevent intermediate update of tracer-field in OB regions,
767       thus keeping current-time-step OB values; and remove the call to OBCS_APPLY
768       which were applying future time-step OB values.
769      This way, all explicit calculations use current-time-step OB values
770       (simpler and more consistent).
771      Affects results when set-up uses time-varying OBC and multi-dim advection;
772       update output of experiment seaice_obcs.
773    o pkg/seaice:
774      move OPTIONS (formerly locally defined) to SEAICE_OPTIONS.h:
775       this includes SEAICE_GROWTH_LEGACY (+ SEAICE_DO_OPEN_WATER_GROWTH &
776         SEAICE_OCN_MELT_ACT_ON_AREA ) and SEAICE_SOLVE4TEMP_LEGACY.
777      Default (pkg/seaice/SEAICE_OPTIONS.h) is to define SEAICE_SOLVE4TEMP_LEGACY
778       but leave SEAICE_GROWTH_LEGACY undef ; For now, keep verification exp
779       unchanged (SEAICE_GROWTH_LEGACY defined in */code*/SEAICE_OPTIONS.h)
780    o pkg aim (2010/10/26):
781      - Introduce ALLOW_INSOLATION, moving toward a more general incoming solar radiation
782        formulation with obliquity, eccentricity, ... as run-time parameters,
783      - Introduce diagnostics for top-of-the-atmaophere incoming solar radiation and
784        upward shortwave radition at the surface (all-sky and clear-sky).
785    o pkg/obcs:
786      - writing sections with globalFiles=T does not work: switch to tiled-files
787        when writing sections for OBCS (change pkg/rw/write_rec.F accordingly).
788      - fix index bug (OB_Ie -> OB_Iw_) in obcs_apply_uvice.F
789      - apply OBCS_SEAICE_COMPUTE_UVICE to both uice and vice at all obcs
790    
791    checkpoint62m (2010/10/21)
792    o pkg/seaice: vectorize seaice_solve4temp.F
793      - move iterations loops outside of i/j-loops
794      - requires 2D arrays for TB and effConduct
795      - add 2D iceOrNot to replace HICE_ACTUAL.GT.0, as HICE_ACTUAL is
796        modified in this routine
797      - a little bit of clean up, adjusting indentation, etc.
798      - replaced a few TEN**a by exp(a*log(10.)) in new code for better
799        performance and '**TWO' by '**2' (because TWO is a float),
800        replaced ONE, ZERO
801    o eesupp/src:
802       fix flow dir for exch1_z_RX_cube, exch1_uv_RX_cube & exch1_bg_RX_cube
803    o pkg/seaice/seaice_growth.F
804      Revision 1.89 of seaice_growth.F completes the overall october 2010 revision and
805      merging process. The merged routine has two branches, and one activates the 'evolution'
806      branch by setting SEAICE_GROWTH_LEGACY to undef (at the top of the routine for now).
807      In summary, here is what the '10/10 revision' did consist of
808        part 1: seaice_growth.F revisions 1.71 to 1.75
809          - Preliminary seaice_growth.F clean-up, keeping test results strictly unchanged.
810            The emphasis here was on improving readability (e.g. by trying to use meaningful
811            variable names) and modularity (e.g. by adding arrays to store heff etc. updates).
812        part 1.5:
813          - revising the lab_sea experiment to make it a more useful (i.e. stable
814            and representative of an actual model run). This was done by generating a
815            (winter) pickup to start from, switching back the main experiment dynamic
816            solver from evp to lsr, having one of the experiments use the free drift solution.
817        part 2: seaice_growth.F revisions 1.76 to 1.85
818          - Sorting out hard-coded constants that prevented heat and fresh water conservation.
819          - Sorting out the various fields units and sign (set early on and reset at the end)
820            to avoid numerous scalings/re-scalings. By v1.85 the basic unit for ice, heat and
821            fresh water stock is 'effective ice meters', and >0 implies more ice/snow.
822          - Using tendency terms arrays (d_HEFF* etc.) to alleviate remaining code locks,
823            and simplifying logical expressions to further improve readibility.
824        part 3: seaice_growth.F revisions 1.86 to 1.89
825          - Re-organize the blocks of code more logically.
826          - Merging the '_if.F' pieces that add something new.
827    o pkg/thsice:
828      - vectorize thsice_solve4temp and thsice_get_exf.
829        Problem: thsice_solve4temp has an unvectorizable statement that
830        might also be problematic for TAF
831      - thsice_get_exf: add the ALLOW_BULK_LARGEYEAGER04 CPP-flag. This
832        does not change the verifcation experiment, but will change all
833        experiments that have this flag undefined (not tested in verification);
834        a little reorganization to save a few 2D fields and recomputations
835      - 1st step of revisiting thsice adjoint (major recomp. sorted out)
836      - 2nd step:  fix some store dirs
837        o seems to work somewhat, i.e. using ifort but not g77
838        o likely cause are incomplete init. or recomputation
839        o start verification/global_ocean.cs32x15/input_ad.thsice
840    o pkg/obcs: add support for exch2
841      - the position of the boundary and prescribed values are specified using
842        a global domain with exch2 facets stacked
843        - in x for N,S boundaries (like W2_mapIO=-1)
844        - in y for E,W boundaries (so E,W boundaries do not overlap)
845    o pkg/mdsio: add support for writing global sections with exch2
846        file layout is as for obcs described above:
847        - for x-z sections, facets are stacked in x (like W2_mapIO=-1)
848        - for y-z sections, facets are stacked in y
849    o pkg/thsice:
850       - change a few routines for better vectorization: thsice_albedo.F,
851         thsice_step_temp.F, and in thsice_calc_thickn.F. Results are
852         not affected, but in particular the latter routine has changed
853         dramatically (not necessarily easier to read now).
854       - re-arrange calculation in THSICE_SOLVE4TEMP: move outside of i,j loops
855       iteration loop and call to S/R THSICE_GET_BULKF & THSICE_GET_EXF.
856    o verification/lab_sea:
857      - overhaul of the forward model experiments. The main motivation
858        for this revision is that lab_sea has proven quite fragile (when
859        changing the sea-ice code, and switching platforms) to a point
860        when failures were very hard to attribute to specific code problems.
861      - the suspected reason for this fragility is noise amplification by evp so,
862        to start with, we decided to replace evp with lsr in the main experiment.
863      - the input.lsr experiment thus became obsolete and was removed.
864      - it was replaced with the input.fd experiment that uses an
865        analytical "free drift" solution as the ice velocity field.
866      - Taken together, input (lsr), input.fd (free drift) and input.hb87 (evp)
867        will hopefully allow us to discriminate problems due to dynamic solvers
868        from problems due to the thermodynamic code. input.salt_plume (lsr) allows
869        us to test additional options, along with the salt plume package.
870      - Finally a pickup was generated (at the end of a one year run) to
871        make the tests more representative of an actual model run. Previously
872        the tests starting point was a 1m thickness of ice everywhere.
873    o pkg/seaice:
874      - introducing S\R seaice_freedrift.F that compute the
875        analytical solution to an approximate ice momentum
876        equation (i.e. the simple stress/coriolis balance).
877      - define SEAICE_ALLOW_FREEDRIFT to trigger the computation
878        of the free drift velocity field, and enable its use.
879        To actually use the free drift solution as the model ice
880        velocity field set SEAICEuseFREEDRIFT to .TRUE. in data.seaice.
881    o move "useOASIS" from PARAMS.h to EEPARAMS.h and read it from "eedata"
882    
883    checkpoint62l (2010/10/04)
884    o pkg/seaice:
885      -fix the USE_ORIGINAL_SBI version (for variable freezing point);
886      -use "celsius2K" in SEAICE_VARIABLE_FREEZING_POINT and in new
887       version (with USE_ORIGINAL_SBI undef);
888    o add hooks for new packages OASIS, the package will follow
889      (hooks exclude the seaice pkg for now)
890    o pkg/autodiff: ALLOW_AUTODIFF_WHTAPEIO
891      Option to use mdsio_read_whalos.F/mdsio_write_whalos.F,
892      rather than mdsio_readvector.F/mdsio_writevector.F, within
893      adread_adwrite.F to read/write adjoint-related tapes to disk.
894    o eesupp and pkg/mdsio: ALLOW_WHIO
895      Option to write/read 2D fields to files including tiles halos.
896      The main purpose is for adjoint related "tape I/O".
897      The secondary purpose is for debugging phases.
898      A word on those rather specifically intended purposes.
899      The code was meant to be stripped down to the bare minimum.
900      Typically, there is a unique and basic mapping to the global
901      buffer (tile by tile, then proc by proc, then level by level), and
902      byteswaps and meta-files are omitted. Indeed the (*_WH*) code is not
903      meant to generate user friendly outputs of various shapes and forms.
904      Rather it is intended, for the knowledgeabale developers,
905      to be largely independent of the many mdsio options, to allow
906      outputs of tiles+halos in debugging phases and in adjoint runs,
907      and to allow some flexibility in tuning (adoint) I/O depending on each
908      file system behavior. With regard to tuning, most of the potential knobs
909      (to leave files open, to allocate the I/O indep. of usesinglecpuio,
910      to specify directories, to specify the typical size of I/O calls, etc.)
911      are not yet included, and will be added if they prove useful.
912    o pkg/seaice:
913       fix uninitialised arrays in USE_ORIGINAL_SBI version of seaice_solve4temp.F
914    o pkg/seaice:
915       new S/R seaice_solve4temp.F: this is the merged version of Ian Fenty
916       code (seaice_budget_ice_if.F) which enable to recover old standard
917       code (seaice_budget_ice.F) when option USE_ORIGINAL_SBI is defined.
918       temporary: add "#define USE_ORIGINAL_SBI" at the top of seaice_solve4temp.F.
919    o model/src (rStar):
920       use simple average (not area weighted) of rStarFac at U,V point when using
921       vectorInvariant and selectKEscheme=1,3 (consistent with mom. vertical advection)
922       update output of exp. fizhi-cs-32x32x40 and fizhi-cs-aqualev20.
923    
924    checkpoint62k (2010/09/17)
925    o adjoint
926       * changed verification/global_ocean.cs32x15 ; adjoint now tests
927         Adams-Bashforth 3 + NLFS + RSTAR
928       * some more modifs required for ECCO-GODAE v4
929    o pkg/seaice
930       add SEAICE_AGE_VOL option to use volume instead of area for
931       integrating SEAICE_AGE
932    o model/src:
933       first check-in of sigma & hybrid-sigma coordinate code ; also includes
934       non-linear free-surface parts ; but pressure-gradient not yet coded.
935    o pkg/ptracers:
936       option for ptracer to convert Salt Relax into additional EmP.
937        tested in exp. global_ocean.90x40x15.dwnslp (update output)
938    
939    checkpoint62j (2010/08/25)
940    o pkg/ggl90:
941       other minor changes: remove 3-D temp array gTKE (+ add argument myIter)
942    o pkg/dic: car_flux.F, phos_flux.F
943      - reduce number of exp-calls in order to improve performance
944      - clean up a little (replace fields by their macros, etc., fix
945        typo in CPP-flag)
946    o pkg/ggl90: minor changes
947      - GGL90diffKrS was removed --> always use GGL90diffKr
948      - GGL90viscAr was removed --> replaced with GGL90viscArU, GGL90viscArV
949      - hack of mxlMaxFlag=2 --> ensure mixing between first and second level
950        (commented out for now)
951      - change in max/min operations to ensure that smoothing is ok
952      - smoothing of GGL90viscAr was moved to ggl90_calc.F (as done for GGL90diffKr)
953      - always use diffKrNrT as background profile (i.e. never use diffKr field)
954    o pkg/cfc: bug fix, AREA(i,j,1,bi,bj) -> AREA(i,j,bi,bj)
955    o pkg/dic:
956      - model/src/impldiff.F: if TARGET_NEC_SX, extend loop ranges for better
957        vectorization
958      - small bug fix in insol for the unlikely case of a cartesian grid
959      - towards vectorizing the dic package: bio_export.F, car_flux.F, phos_flux.F
960        + now vectorize, which also removes adjoint recomputations;
961        + replace integer maksp1 by _RL maskp1
962        + replace a**x by exp(x*log(a)) in phos_flux.F for speed
963    
964    checkpoint62i (2010/07/21)
965    o pkg/flt:
966      - with OBCS: stop floats which enter the OB region
967    o model/src:
968      - use tempVertAdvScheme & saltVertAdvScheme (instead of horizontal ones)
969        for implicit vertical advection.
970    o pkg/seaice:
971     - account for melting in seaice age evolution.
972     - remove double counting of seaice ridging effect on seaice age.
973    
974    checkpoint62h (2010/06/18)
975    o pkg/exch2:
976     - remove exch2_*xy_rx files: call was replaced with exch2_*3d_rx(myNz=1).
977    o tools/genmake2
978      - remove "-pdefault" option: redundant with the use of "packages.conf";
979      - remove file pkg/pkg_default : set the default as a pkg group
980        ("default_pkg_list") defined in pkg/pkg_groups;
981      - fix for case pkg/pkg_depend is missing (was hanging before);
982      - add option "-pgroups" to specify a different pkg_groups than the default.
983    o verification/adjustment.cs-32x32x1:
984       add a "minimal" set-up test (code_min & input_min) which only compiles
985       eesupp/src and the 2 pkgs (exch2 & debug) which don't need model/src & inc.
986    o tools/genmake2
987      - extend pkg_depend rules to model & eesupp (e.g., if model depend on [pkg]))
988      - fix details of checking for mnc & profile pkg when NetCDF is unavailable.
989    o pkg/exf: merge exf_bulk_largeyeager04 into exf_bulkformulae because these
990      files are nearly the same anyway.
991      Step 1: make exf_bulkformulae look like exf_bulk_largeyeager04:
992       - redefinition of tau(i,i) (by a factor of ustar)
993       - 1./exf(Const/T) -> exf(-Const/T) (big change in the results)
994       - replace rhonil by rhoConstFresh in computation of evap (bug fix)
995       - replace u/vstress=tau*rd*ws*cw by tau*rd*u/vwind (changes results)
996       - replace
997         rd(i,j)= rdn(i,j)/(exf_one - rdn(i,j)/karman*psimh )
998         shn    = sh(i,j,bi,bj)*rd(i,j)/rdn(i,j)
999         by
1000         shn    = sh(i,j,bi,bj)/(exf_one - rdn(i,j)/karman*psimh )
1001         (changes results)
1002       -> exf_bulkformulae v1.22,
1003          update verification experiments lab_sea, offline_exf_seaice, seaice_obcs
1004          (lab_sea: output.hb87.txt 1.11, output.lsr.txt 1.25, output.salt_plume.txt 1.13,
1005                    output.txt 1.63
1006           offline_exf_seaice: output.seaicetd.txt 1.7
1007           seaice_obcs: output.txt 1.10)
1008      Step 2: do the actual merge and remove exf_bulk_largeyeager04.F
1009       -> exf_bulkformulae v1.23,
1010          unfortunately requires updating lab_sea.salt_plume (6 matching digits),
1011          and global_ocean.cs32x15.icedyn (only 11 matching digits)
1012      Also update output_adm of exp. lab_sea (all 4) and offline_exf_seaice.
1013    o adjoint of exch-1:
1014     - pass high-level EXCH S/R through TAF (eesupp/src/exch_ad_diff.list)
1015       (note: was already like this when using EXCH-2) and remove flow dir
1016       and hand-written AD version of high-level EXCH S/R (pkg/autodiff);
1017     - provide flow-dir for low-level exch1 S/R (eesupp/src/exch1_ad.flow);
1018     - update pkg/exch2 diff list.
1019    
1020    checkpoint62g (2010/05/19)
1021    o eesupp/src (exch-1):
1022     - split exch_rx.F into Forward S/R (exch1_rx.F) and Adjoint S/R (exch1_rx_ad.F)
1023       and remove argument "simulationMode"; same thing for all exch_*rx_cube.F
1024       (renamed to exch1_*rx_cube.F).
1025     - change accordingly exch_*_rx.template and AD version in pkg/autodiff
1026       to call new exch1 S/R ; update Makefile and .cvsignore.
1027     - replace call to exch2_xy_rx S/R with exch2_*3d_rx(myNz=1) (will remove
1028       exch2_xy_rx later)
1029      Note: after updating your code, need to run "make clean" in eesupp/src
1030    o test experiment bottom_ctrl_5x5:
1031       new output_adm.txt with fewer grdchk & less monitor output.
1032    o model/src:
1033      remove the call to ini_cori in initialise_varia.F (just keep the usual one
1034       in initialise_fixed.F). More consistent with coriolis & horizontal grid
1035       beeing treated in the same way (ini_grid is not called a 2nd time).
1036    o pkg/exf:
1037      - rewrite exf_bulk_largeyeager04.F for better vectorization, changes
1038      global_ocean.cs32x15/input.icedyn (11 digits of agreement), updated
1039      - fix adjoint (used worked for ALLOW_ATM_WIND defined, works for this now)
1040      - cosmetic changes to exf_bulkformulae.F to make it look more like
1041        exf_bulk_largeyeager04.F
1042    o eesupp/src (exch-1):
1043      - Fix AD EXCH code for 2-D domain special cases (Nx=1 or Ny=1).
1044      - Separate buffer filling and MPI sending: allow EXCH-1 to work for local
1045        array (non-shared) when using MPI+MTH. Also reduces number of BARRIER
1046        (even without using MPI).
1047      - Message mode: move RecvAck setting (indicator of buffer being ready)
1048        from send_put to recv_get S/R (was useless before, but not sure if
1049        it's much more useful now);
1050      - Switch the order of sync: MPI-proc 1rst and then threads;
1051      - take out spin-waiting code (#undef EXCH_USE_SPINNING), use BARRIER instead.
1052      - fix AD code for communication mode ='get' (but not used).
1053    o model/src:
1054      initialise dPhiHydX,dPhiHydY inside calc_grad_phi_hyd.F (so that TAF does
1055      not drop it in S/R mddynamics, producing NaN in hs94.1x64x5 AD-test exp).
1056    o utils/matlab/rdmnc.m: adapt to be able to use the generic matlab netcdf API
1057    o pkg/ctrl: require a specific set of control variables and exf-flags for
1058      adjoint of seaice (stop in ctrl_check.F if conditions are not satisfied)
1059    o model/src:
1060     a) 1rst version of a new driver S/R to turn-off output freq and flags after the
1061       1rst forward sweep, to avoid over-writing output files during recomputations
1062       recomputations (& grdchk); called from cost_final.F (& ctrl_init_ctrlvar.F ?)
1063     b) 2nd version:
1064      - add specific pkg S/R for seaice & ptracers (called from S/R TURNOFF_MODEL_IO);
1065      - switch-off more output flags (exf_monFreq, chkPtFreq, dumpInitAndLast,
1066         writePickupAtEnd) + seaice & ptracers output;
1067      - do not switch off MNC flags (otherwise, won't get admonitor netcdf file)
1068    o model/src:
1069      - new S/R rotate_uv2en_rl (..._rs) that rotates vector fields.
1070    o pkg/exch2:
1071      - remove "simulationMode" from arg. list of S/R EXCH2_RX1,2_CUBE ;
1072      - add argument "signOption" to EXCH2_RX1_CUBE (will be needed for SM exch).
1073    o pkg/autodiff & exch2:
1074      process exch_uv_agrid_3d_rx.f & exch2_uv_agrid_3d_rx.f through TAF
1075      (for now, only if ALLOW_EXCH2 is defined).
1076    o pkg/autodiff:
1077      - include PACKAGES_CONFIG.h in exch*ad.flow & exch*ad.F
1078        (not supposed to be in CPP_OPTIONS.h) to get ALLOW_EXCH2 defined correctly.
1079       + clean-up comments (_RS is not always real*4)
1080      - fix bug in ADEXCH_UV_3D_RX (without EXCH2, was calling the forward exch S/R)
1081      - add a stop in ADEXCH_UV_AGRID_3D_RX if trying to use it with EXCH2:
1082        was calling a forward exch2, which is wrong ; used in SEAICE & EXF pkgs.
1083    o testreport (AD-tests):
1084      no longer link files from dir "../input" (1rst link files from
1085      "../input_ad.[xx]" if secondary test "xx" and then from "../input_ad")
1086    
1087    checkpoint62f (2010/04/29)
1088    o model/src/the_main_loop.F:
1089      adjust store directives for seaice evp and multicategory according to
1090      pkg/ecco/the_main_loop.F
1091    o adjoint:
1092      global_sum_ad was incomplete (noted many times by many people ;)
1093      nice description by Jean U. as follows:
1094      * allreduce(var) in global_sum.F can be interpreted as
1095        reduce(sum) followed by broadcast of sum.
1096      * The adjoint of that is
1097        sum(adjoint) followed by broadcast(summed adjoint value)
1098        or in other words, allreduce(sum, adjoint vars)
1099      We were missing the sum(adjoint)!
1100      Benign, except(!) for "global" scalars appearing in tile loops (bi,bj)
1101      (noted by J.M. Campin, e.g., in cost_ssh_mean, variable offset).
1102      The fix should produce 16-digit accuracy between
1103      single-CPU multi-tile (e.g. nSx=2, nPx=1) and
1104      multi-CPU single-tile (e.g. nSx=1, nPx-2)
1105      We'll probably change this yet again shortly
1106    o eesupp/src:
1107      - fix global_sum_r4 (wrong from previous modif in Jun 2009; ever used ?)
1108    o pkg/icefront
1109      - ALLOW_SUBGLACIAL_RUNOFF option adds capability for time-evolving
1110        specification of addmass array based on a 2D field, which is added
1111        at bottommost wet level at each horizontal location.
1112    o model/src:
1113     horizontal grid initialisation (other than curvilinear): add code for Exch2 IO
1114     layout; (not always compatible with delX,delY setting; commented out for now).
1115    o pkg/exch2:
1116     change tile to processor setting (case nSy*nPy > 1): allows default model mapping
1117     (myX and myYGlobalLow) to be used for simple (1 facet, no blank tile) config.
1118    
1119    checkpoint62e (2010/04/15)
1120    o pkg/obcs:
1121      - fix wrong index in OBCS_SPONGE_V for Eastern-OB (reported by David Hebert).
1122    o pkg/dic:
1123      -fix bug in fe_chem.F for multi-tile (nSx*nSy > 1) set-up;
1124        (note: not presently tested in any forward verification exp.)
1125       update tutorial_global_oce_biogeo AD output file.
1126    o pkg/exf:
1127      - account for the variation of albedo as a function of zenith angle
1128        by defining ALLOW_ZENITHANGLE in EXF_OPTIONS.h
1129    o build_options:
1130     - rename "linux_ia64_ifort+mpi_ice_nas" to "linux_amd64_ifort+mpi_ice_nas"
1131    o pkg/dic:
1132      change DIC atmos-CO2 box (method 3, dic_int1=3) initialisation & restart:
1133      - use binary pickup file for restart;
1134      - initialise atmos-CO2 box from dic_pCO2 parameter;
1135      - fix multi-threaded.
1136    o pkg/rbcs:
1137     - clean-up RBCS code: add RBCS_OPTIONS.h file ; fix multi-threaded ;
1138       change (+ fix IO calls) type of array RBC_mask from _RL to _RS.
1139     - add RBCS to exp4 passive tracer 01 (rbcs was previously untested)
1140       and update output.txt
1141    o pkg/kpp:
1142     - add diagnostics for KPP non-local flux of Temp, Salinity and pTracers;
1143     - change diagnostic of KPP non-local term: output average of KPPghat*KPPdiffKzS
1144       (= ratio of KPP non-local (salt) flux relative to surface-flux) when
1145       using pkg/timeave & pkg/diagnostics (diag 'KPPghatK' replaces 'KPPghat ');
1146     - change pkg/offline to read-in average KPPghat*KPPdiffKzS from file
1147       KPP_ghatKFile (instead of the average of KPPghat from file KPP_ghatFile).
1148  o pkg/offline:  o pkg/offline:
1149    fix bug in S/R OFFLINE_FIELDS_LOAD regarding surfaceForcing conversion factor    fix bug in S/R OFFLINE_FIELDS_LOAD regarding surfaceForcing conversion factor
1150    (bug was added in version 1.10 on 2007-08-23).    (bug was added in version 1.10 on 2007-08-23).
# Line 57  o tools/build_options: Line 1198  o tools/build_options:
1198      but keep the former optfile for few weeks for smooth transition      but keep the former optfile for few weeks for smooth transition
1199  o pkg/ecco  o pkg/ecco
1200    - allow user defined cost function contributions    - allow user defined cost function contributions
1201          CPP: ALLOW_USERCOST_CONTRIBUTION       CPP: ALLOW_USERCOST_CONTRIBUTION
1202          USAGE: compute contributions in cost_usercost_all.F       USAGE: compute contributions in cost_usercost_all.F
1203    - note: this is identical to what ALLOW_GENCOST_CONTRIBUTION once was.    - note: this is identical to what ALLOW_GENCOST_CONTRIBUTION once was.
1204        the two options are complementary.        the two options are complementary.
1205  o pkg/smooth  o pkg/smooth
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