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revision 1.1238 by jmc, Tue Mar 16 00:32:32 2010 UTC revision 1.1451 by gforget, Thu Jun 9 20:29:31 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/seaice:
8      - introduce siEps=1e-5 parameter
9      - use areaMax in AREA update (part 4), consistent with ridging step (part 2.5).
10      - re-organize SEAICE_ADD_SUBLIMATION_TO_FWBUDGET code.
11      - introduce ALLOW_SITRACER and seaice_tracer_phys.F to handle generic seaice tracer.
12        For now it covers, and was tested for, ice salinity and age (attached to HEFF),
13        as well as ice cover age and ridging index (attached to AREA).
14        For now the run time parameters (in data.seaice/SEAICE_PARM03) are
15        SItrName (e.g. 'age') and SItrMate ('HEFF', which is the default, or 'AREA').
16        Up to SItrMaxNum=3 tracers can be used simultaneously.
17    o pkg/salt_plume:
18      -introduce SPsalFRAC run time parameter that sets the fraction of the
19       salt by-product of ice growth (SPsalFRAC*(1-SIsalFRAC)*salt typically)
20       that gets vertically redistributed (fluxed down) by pkg/salt_plume.    
21    o model debug options:
22      - Switch reading of debugMode from S/R INI_PARMS (parameter file "data", stored
23        in PARAMS.h) to S/R EESET_PARMS (parameter file "eedata", stored in EEPARAMS.h).
24      - Refine debug-msg printing selection (3 new levels):
25        debugMode  : controls printing of debug messages (sequence of S/R calls).
26        debugLevel : controls printing of algorithm-relevant auxiliary/debug messages
27         debLevZero =  0 ; /* level of disabled aux. msg printing */
28         debLevA =  1 ; /* level of minimum  aux. msg printing */
29         debLevB =  2 ; /* level of low aux. print (report read-file opening)*/
30         debLevC =  3 ; /* level of moderate debug prt (most pkgs debug msg) */
31         debLevD =  4 ; /* level of enhanced debug prt (add DEBUG_STATS prt) */
32         debLevE =  5 ; /* level of extensive debug printing */
33        New debugLevel default: with default debugMode value (=F),
34          = 2 (debLevB) or = 1 (debLevA) in case ALLOW_AUTODIFF is defined.;
35          and if debugMode=T, default debugLevel = 4 (debLevD).
36        Relation with previous settings:
37         debLevB (=2) corresponds to former debLevA (=1)
38         debLevD (=4) corresponds to former debLevB (=2)
39        Note:
40         a) if debugLevel=0, skip WRITE_GRID call when nIter0 > 0 (same as before);
41         b) default debugLevel=1 is convenient in AD runs (avoid many file opening msgs);
42            to recover previous default, set debugLevel=2 (e.g. AD-test hs94.1x64x5)
43      - Add new parameter (printResidualFreq, read from PARM02 namelist) to print
44        detailed CG solvers convergence; off (=0) by default, except if debugLevel=5.
45    o pkg/obcs:
46      - change OBCSfixTopo default from True to False (should not change the results);
47        keep OBCSfixTopo=T in verification-exp. seaice_obcs.
48    o pkg/thsice:
49      - fix bug in thsice_calc_thickn.F (was introduced in version 1.18) in
50        2nd layer seaice sublimation (unlikely to happen)
51      - use Interior mask for OBCS in thsice_advection.F (similar to what is
52        done in gad_advection & seaice_advection).
53    o adjoint:
54      bug fix spotted by Gael Forget:
55      seaice_advection and thsice_advection still had
56      legacy CPP options to avoid CS corner updates for adjoint
57    o pkg/seaice:
58      => Change some of the defaults (2011/05/29):
59         - change SEAICEuseFluxForm default (from False to True)
60         - change DIFF1 default (from 0.004 m/s to 0. m/s)
61         And print warnings if DIFF1 is not set in data.seaice and centered
62          avection scheme is used without any diffusion.
63      also:
64      - fix seaice_diffusion calls in default AdvScheme part of seaice_advdiff.F;
65      - set SEAICEdiffKh[] default in the same way as SEAICEadvSch[]
66      - stop if DIFF1<>0 with SEAICEadvScheme <> 2, if DIFF1<>0 with any
67        other non-zero SEAICEdiffKh[] diffusivity, if SEAICEadvSalt=T with
68        #undef SEAICE_VARIABLE_SALINITY, if SEAICEadvAge=T with #undef SEAICE_AGE.
69      update results of test exp.:
70         lab_sea: output.fd (switch to AdvScheme=33 with diffKh=20)
71             output.hb87, output_adm.evp (SEAICEuseFluxForm=T and diffKh=200)
72             output_adm.noseaicedyn (SEAICEuseFluxForm=T)
73         offline_exf_seaice: output.seaicetd, output_adm (SEAICEuseFluxForm=T)
74         seaice_obcs: output (SEAICEuseFluxForm=T)
75      and prescribe old default for SEAICEuseFluxForm (=F) and DIFF1 (=0.004)
76          for standard fwd & AD lab_sea tests (to keep the same output).
77    o pkg/seaice/seaice_growth.F:
78      - use Ian Fenty's capping formulas for actual ice
79      thickness thoughout EVOLUTION branch.
80      - put treatment pathological case #2) in CPP brackets
81      (ALLOW_AVOID_INFINITESIMAL_AREA, undef by default).
82      - update global_ocean.cs32x15 and 1D_ocean_ice_colum results accordingly.
83    o pkg/seaice:
84      - seaice_diffusion.F : remove the min(DX,DY) factor permanently;
85      pass the Laplacian diffusivity (in m^2/s) diffKh as a parameter;
86      also pass fac as a param, which can be 1. (to update the tendency
87      field) or the time step (to update the field itself).
88      - seaice_advdiff.F: for multidim, call seaice_diffusion with
89      e.g. SEAICEdiffKhHeff and with fac=1; for single-dim, call
90      seaice_diffusion with e.g. SEAICEdiffKhHeff and with fac=time step.
91      - SEAICE_PARAMS.h, seaice_readparms.F, seaice_check.F :
92      hooks to handle SEAICEdiffKhHeff, SEAICEdiffKhArea, etc.
93    o pkg/seaice:
94      diffusion with centered advection scheme (diffus.F & advect.F):
95      - simplify S/R DIFFUS (put deltaT & DIFF1 factor outside, move EXCH outside)
96        to just compute the laplacian of input-field.
97      - unroll k loop (harmonic,biharmonic diff) in advect.F to save 1 exch call.
98      - fix flux-form version in diffus.F to conserve tracer.
99      update output of lab_sea.fd & lab_sea.hb87 (1rst set of modif affects
100       machine truncation) and lab_sea.salt_plume (conservative flux-form modif)
101    
102    checkpoint62y (2011/05/26)
103    o pkg/seaice:
104     - seaice_growth.F : in EVOLUTION branch, always include
105       a_QSWbyATM_cover in qnet (as it should be).
106     - verification/global_ocean.cs32x15 : update results accordingly
107       (output.seaice.txt output_adm.seaice.txt).
108    o pkg/seaice + obcs:
109     - use maskInW & maskInS in multi-dim advection and biharmonic diffusion:
110       equivalent of assuming no tracer gradient outside the OB region.
111       update output of seaice_obcs (uses DIFF1 <>0 => biharmonic diffusion)
112     - remove calls to OBCS_COPY_TRACER after EXCH calls (no longer needed
113       after changes above);
114     - obcs+seaice cleaning: apply seaice-tracer OB values to tracer field
115       only at OB location (instead of over a band of OLx width).
116    o pkg/seaice:
117     - fix wrong indices in old (non Flux-Form) diffusion default S/R diffus.F
118       (dxG(I+1, ...) changed to dxG(I, ...), no impact on Lat-Lon grid)
119    o pkg/obcs:
120      - split header file "OBCS.h" into 4 separated files:
121        OBCS_PARAMS.h, OBCS_GRID.h, OBCS_FIELDS.h & OBCS_SEAICE.h
122       Note: OBCS_PARAMS.h & OBCS_GRID.h can be included without OBCS_OPTIONS.h
123         (contain no conditional statement which depends on OBCS options).
124      - move "useOBCSYearlyFields" from "data.obcs" (hold in OBCS_PARAMS.h)
125        to parameter file "data.exf", namelist EXF_NML_OBCS (in EXF_PARAM.h).
126    o ctrl, cost, grdchk & autodiff pkgs:
127      - make options file more standard (like other {PKG}_OPTIONS.h file but
128        with AD_CONFIG.h); clean-up some of the included header files.
129    o pkg/obcs:
130      - do not mask tracer when applying OB (tracer == 0 could generate problems)
131      - apply tracer OB values to tracer field only at OB location (instead of
132        over a band of OLx width)
133      - clean-up obcs_apply_w.F & obcs_apply_eta.F (since less calls to these S/R)
134      - remove OBCS_MULTIDIM_OLD_VERSION code in gad_advection.F and remove
135        obcs_apply_tloc.F & obcs_apply_sloc.F
136    o obcs in model/src:
137      - call OBCS_APPLY_W only if NonHydrostatic.
138      - call OBCS_APPLY_ETA only if NonLinFreeSurf.
139      - reset dEtaHdt and wVel to zero outside OB interior region ;
140      - leave tracer unchanged outside OB interior region: This has no effect
141        on the solution but just to prevent unrealistic tracer value outside OB.
142      - zero out velocity outside OB interior region: This has no effect on
143        the solution but just to prevent unrealistic velocity outside OB.
144    o obcs and non-lin free-surf:
145       move call to OBCS_APPLY_R_STAR from update_r_star.F to calc_r_star.F
146       and call to OBCS_APPLY_SURF_DR from update_surf_dr.F to calc_surf_dr.F
147       + add argument "etaFld" to OBCS_APPLY_R_STAR & OBCS_APPLY_SURF_DR:
148       this fixes missing EXCH + get consistent eta OB value (+ fix restart).
149       update results of test-exp. exp4(nlfs).
150    o exp4 (nlfs) test-exp:
151       use OBC for Eta at Western & Eastern OB (to test prescribing Eta
152       with NonLin-FreeSurf); update output.nlfs.txt
153    o obcs and 2d/3d solver norm:
154       use interior masks (maskInC) to cancel out cg2d & cg3d matrix coeff at OB
155       and outside OB interior region (will allow to place OB further inside the
156       domain). Depending on the domain, can affects cg2d-Norm (previous
157       cancellation outside OB was only partial), e.g. in exp4 & obcs_ctrl,
158       and cg3d-Norm (previous Norm was computed before canceling OB terms),
159       e.g. in tutorial_plume_on_slope.
160      - update output of exp.: exp4 (x2), obcs_ctrl and tutorial_plume_on_slope.
161    o pkg rbcs:
162      - split RBCS.h into 3 files: RBCS_SIZE.h, RBCS_PARAMS.h & RBCS_FIELDS.h
163      - add capability to apply relaxation to horizontal velocity uVel & vVel.
164    o pkg/grdchk: add gradient check for control variable xx_shifwflx
165    o pkg/shelfice/shelfice_init_fixed.F
166      fix CPP-flag combinations
167    o pkg/seaice: Merge iceage code of Pierre Rampal
168      * update/change/correct ice age calculations
169      * add age updates for pathological cases
170      Probably needs more testing...
171    
172    checkpoint62x (2011/05/13)
173    o pkg/mom_vecinv:
174       high-order vorticity scheme: use interior masks (maskInW & S)
175       to zero-out (outside OB) gradient of vorticity.
176    o verification exp.:
177       turn on "useEnergyConservingCoriolis" (better discretisation) in exp.
178       hs94.128x64x5 and seaice_obcs ; update results.
179    o pkg/obcs:
180      fix bug in OBeta for YZ sections in obcs_exf_load.F
181    o pkg/ctrl, pkg/shelfice, and optim:
182      - add new control variable xx_shifwflx (fresh water flux underneath ice
183        shelves). This is almost as tedious as obcs-ctrl, because the
184        variables needs its own mask.
185      - add a cost function term that penalizes the deviation of xx_shifwflx
186        from the first guess (zero) in analogy to other control variables
187    o pkg/shelfice:
188      - start basic adjoint
189    o pkg/ctrl:
190      - remove extra 2D field "for good measure" when initializing in
191        ctrl_set_globfld_[xy/xz/yz].F
192      - replace hard coded precision 32 (a bug) in ctrl_map_ini_gen by ctrlprec
193      - improve error messages in ctrl_set_unpack_*
194    o OBC implementation in momentum:
195       use interior masks (maskInC,W & S) in momentum S/R:
196       - multiply divergence, tension and some del^i.u or del^j.v by maskInC
197       - multiply del2u,del2v by maskInW/S (biharmonic viscosity)
198       - multiply horiz. grad of vorticity by maskInW/S (in Leith scheme)
199       - multiply gradient of wVel by maskInW/S in del2w calculation (NonHyd)
200       Motivation: fix/clean implementation of OBC with biharmonic-viscosity
201        (and also with Leith/Smagorinsky harmonic-viscosity).
202       Update output of experiment dome and exp4 (+nlfs).
203    o exp4 test-exp:
204      - turn on: nonHydrostatic, exactConserv, viscA4 (with momDissip_In_AB=F)
205        and prescribe time-varying OB (without pkg/exf) for zonal-velocity
206        at Western & Eastern Boundaries (+/- 1 per-cent); Also prescribe
207        time-varying OB at Western-side for wVel (NonHyd); update output.
208      - add secondary set-up (.nlfs) using NonLin FreeSurf (z*) + mom_vecinv
209        and biharmonic-viscosity ; also use prescribed time varying OB.
210    o pkg/obcs:
211      fix bug in OBWeta,OBWeta indices in obcs_apply_r_star.F
212    o model/src:
213      - fix startTime setting when baseTime<>0 & nIter0=0 are specified ;
214      - initialise startTime & nIter0 with unlikely values: allows to set one
215        from the other without ambiguity.
216    o seaice_obcs test-exp.:
217      add small diffK4T,S to test biharmonic diffusivity with OBCS ; update output.
218    o pkg/obcs:
219      - remove calls to OBCS_COPY_TRACER after EXCH for T,S & pTracer:
220        no longer needed with maskInC,W,S in pkg/generic_advdiff.
221    o pkg/seaice:
222      - retired SEAICE_SALINITY and SEAICE_salinity in favor of
223        SEAICE_VARIABLE_SALINITY and SIsalFRAC, respectively.
224      - fixed bug in the initialization of sea ice salinity variable HSALT
225        in seaice_init_varia.F  (removed dependence on ICE2WATR)
226    o fizhi-cs test exp.:
227       switch reference output convention for these 2 non-standard test-exp,
228        from: pgi  6.1-5 on faulks (FC.6, -of linux_ia32_pgf77+authors_fc5)
229          to: ifort 11.1 on baudelaire (FC.13, -of linux_amd64_ifort11)
230       reason: faulks might get retired soon and pkg/fizhi has still Pb with gfortran
231    o model/inc:
232      - change type of PmEpR array (from _RS to _RL) to fix restart (with "-use_r4")
233        of exp. global_ocean.90x40x15 (Suncronous time-stepping + Real-FW + NonLin-FS)
234    o pkg/seaice:
235      - fix calculation of saltFlux and saltPlumeFlux when using SEAICE_SALINITY
236    o verification/lab_sea, 1D_ocean_ice_column, seaice_obcs, global_ocean.cs32x15
237      - updated output*.txt files due to bug fixes in salt, saltPlumeFlux,
238        and initial HSALT
239    
240    checkpoint62w (2011/04/26)
241    o pkg/mom_fluxform:
242      - fix calculation of del2u & del2v (no-slip BC) when using Non-Lin Free-Surf.
243      - use parameter "sideDragFactor" in no-slip BC side-drag part.
244      - update output of exp. global_ocean.90x40x15
245    o pkg/mom_vecinv:
246      mask del2u & del2v (no effect on results, but cleaner & closer to mom_fluxform)
247    o update seaice exp.:
248      use more consistent parameter values (remove "backward compatability only":
249       ICE2WATR, SEAICE_lhSublim, SEAICE_cpAir, SEAICE_rhoAir + set rhoConstFresh)
250      related to thermodynamics seaice. Update output (fwd+AD) of exp.:
251       1D_ocean_ice_column (x2), lab_sea (x8), ioffline_exf_seaice (x2) & seaice_obcs
252    o update test-exp global_ocean.90x40x15:
253      o use default CD_CODE_OPTIONS file (Adams-Bashforth on CD Mom & Coriolis).
254      o increase Overlap size from 2 to 3 (to allow to test bi-harmonic Visc.)
255      o new pickup-files from a 100.yr run with pkg/down_slope (input.dwnslp params)
256      o turn on zStar & viscA4 in standard set-up (dir input/)
257        and update output files: output.txt & output.dwnslp.txt
258    o new AD-test experiment: obcs_ctrl
259      (From Matt MITgcm_Contrib/SOSE/BoxAdj) to test OBCS as control vector.
260    o pkg/dic:
261      fix two bugs in handling water vapour pressure in carbonate chemistry
262      and air-sea fluxes. Found by Val Bennington and Galen McKinley
263      (add DIC Option = WATERVAP_BUG to recover old results)
264      update output of tutorial_global_oce_biogeo (fwd+AD) & tutorial_dic_adjoffline
265    o adding allowInteriorFreezing option to check for water below freezing point
266      at depth and bring the negative heat anomaly to the surface level
267    o pkgs _fields_load:
268      - extend GET_PERIODIC_INTERVAL to deal with non-periodic case (from pkg/rbcs)
269      - use new S/R GET_PERIODIC_INTERVAL in pkgs:
270        bulk_force, cheapaml, cfc, dic, obcs (+ ctrl/ctrl_get_gen_rec), offline and
271        rbcs to get interpolation weights and time reccord number.
272      - fix multi-threading in aim_fields_load.F
273      - apply EXCH to temp arrays [0,1] after reading in dic_fields_load.F
274    o external_fields_load:
275      new S/R GET_PERIODIC_INTERVAL to calculate which time-record (and linear
276       interpolation weights) to use in a periodic time-series ; do not divide by
277       time-step to convert to integer:
278       - this fixes case where externForcingPeriod is not multiple of time-step
279          (Thanks to Christopher L. Wolfe)
280       - this fixes case where externForcingPeriod is an odd multiple of time-step
281         (was wrong by half of time-step); update results of tutorial_global_oce_in_p.
282      store index of time-record which is currently loaded:
283       - works without any assumption on sequence of calls to EXTERNAL_FIELDS_LOAD ;
284       - needed for the adjoint but not yet used because of extensive recomputations;
285         (to be fixed soon)
286    
287    checkpoint62v (2011/04/02)
288    o verification/1D_ocean_ice_column added to test Ian Fenty's
289      pkg/seaice_growth.F modifications for improving sea ice code differentiability
290    o update output of exp4, internal_wave, seaice_obcs, tutorial_plume_on_slope
291      (new velocity statistics after changing maskInW & maskInS definition)
292    o pkg/generic_advdiff with OBCS:
293      use maksInW & maskInS in advective flux and in biharmonic diffusion calculation:
294      equivalent to assumption of no tracer gradient outside the OB region.
295      This will affect the results if using obcs+biharmonic diffusion.
296      update output_adm.txt of experiment bottom_ctrl_5x5 (not expected since no obc)
297    o pkg/obcs:
298      change definition of maskInW & maskInS: leave OB edges inside (maskIn=1)
299      (e.g., maskInW(OB_Ie)=1 ) so that velocity normal-component at OB is still
300      in Interior region. No impact on solution but affects Velocity monitor stats.
301    o pkg/ptracers (adjoint)
302      New option AUTODIFF_PTRACERS_SPLIT_FILES for writing separate
303      tape file for each tracer
304    o model/inc/src and pkg/autodiff: add parameters that allow to turn
305      of parts of the adjoint code at run time. For now, there are only
306      useKPPinAdMode, useGMrediInAdMode, and useSEAICEinAdMode. These
307      parameters are set in data.pkg.
308      This is the lazy coward's version of doing this, but still useful for
309      debugging. In order to do it right, everything needs to be moved to
310      pkg/autodiff.
311    o pkg/autodiff: fix global_sum_tile_ad.F by resetting adsumPhi at
312      the end; this fixes the adjoint balancing code for open boundaries.
313    o pkg/ctrl:
314      - change behavior of xx_${varname}period to be analogous to exf-conventions:
315        xx_${varname}period =   0.,  means time-independent control part
316        xx_${varname}period = -12., means one-year-periodic monthly control part
317      - introduce helper routine ctrl_init_rec (part of ctrl_init.F) to
318        clean up ctrl_init a little, remove unused variables
319      - ctrl_init: fixed the handling of the start/endrec for obcs-variables
320      - move "call cal_GetMonthsRec" from s/r ctrl_get_gen to s/r ctrl_get_gen_rec
321    
322    checkpoint62u (2011/03/15)
323    o model/src:
324      - for the adjoint, change NonLin-FreeSurf initialisation sequence: fill-in
325        h0Fac from INITIALISE_FIXED and reset hFac to h0Fac in INITIALISE_VARIA ;
326      - in initialise_varia.F (except for ALLOW_DEPTH_CONTROL) remove 2nd call to
327        INI_DEPTHS, INI_MASKS_ETC & INI_LINEAR_PHISURF.
328    o pkg/ctrl/obcs/ecco:
329      - remove obsolete, unused, and partially broken code:
330        ctrl_obcsvol/ctrl_obcsbal/ctrl_volflux and code within
331        ALLOW_CTRL_OBCS_BALANCE
332      - put a stop statement into ecco/cost_obcsvol.F, but also add
333        cost_obcsvol to ecco_ad_diff.list
334    o pkg/ecco: fix counting cost function contributions for obcs (code
335      by Matt M.) and diffkr for diagnostics
336    o pkg/ecco, pkg/ctrl, pkg/grdchk:
337      add cost penalty terms for initial uvel, vvel, eta controls
338      and I/O for prior error files
339    o pkg/mdsio:
340       move mds_check4file.F from eesupp/src to mdsio_check4file.F ; add option
341       (new argument) to check for tiled file in mdsioLocalDir : this fix the
342       restart from pickup_som , pickup_dic (& dic_co2atm) with mdsioLocalDir.
343    o pkg/ctrl:
344     - ctrl_obcsbal.F, ctrl_obcsvol.F: replace last calls of ctrl_getrec by
345       ctrl_get_gen_rec, put a stop statement into ctrl_getrec. Remove
346       unused and superfluous variables
347     - ctrl_get_gen_rec.F: catch the case of xx_genperiod=0.
348    o pkg/ecco
349     - enable adjoint of Stevens OB
350    o pkg/ctrl/ecco/grdchk:
351      - remove global declaration of tmpfldx/yz and tmpfldx/yz2.
352        Fortunately, we do not have any tests for the numerous cpp-flagged
353        option of "obcs as control parameters" so we will never know
354        if this is an improvement (but at least now things compile).
355      - remove an obsolete initialization from ecco_cost_init_barfiles.F
356      - fix some problems within never used ifdefs to make the code compile
357    o pkg/obcs:
358     - Refine Interior mask definition to work with more complex OB (e.g.
359       if OB_Ie < OB_Iw); In case default setting is not sufficient, allows to
360       read in Interior mask from file. Check if Interior mask is consistent
361       with OB list of indices.
362    o pkg/seaice
363     - beginning code for a seaice tracer package,
364       but currently only used for seaice age: SEAICE_AGE
365       SEAICE_num = 4
366       iTracer = 1: area-weighted ice age
367               = 2: volume-weighted ice age
368               = 3, 4: template for one-year vs. multi-year ice
369       data.seaice has new namelist SEAICE_PARM03 for arrays related to
370       SEAICE_num
371    
372    checkpoint62t (2011/03/05)
373    o pkg/obcs:
374     - obcs_apply_uv.F: change to a 2 steps method, first tangential component;
375       then normal component. This ensures that the normal component is set
376       correctly even when it conficts with tangential setting from an other OB.
377       Affects results of test-experiment seaice_obcs: update the output.txt
378    o pkg/obcs:
379     - add code to monitor statistics of dynamical fields at OB.
380     - take OBCS_BALANCE code out of obcs_calc.F into new S/R OBCS_BALANCE_FLOW :
381       - fix to OBCS_BALANCE code (right hFac ; deal with simple OB intersection).
382       - change default: balance the Net inflow through all OB (instead of balancing
383         each OB separately); keep the old method if setting OBC_balanceFacX < 0.
384     - switch on useOBCSbalance in dome experiment: only correct Western OB outflow
385       to match Nortern OB inflow (OBCS_balanceFacN=0).
386    o pkg/seaice:
387     - redefined actual sea ice age to be ICEAGE/HEFF ifdef SEAICE_AGE_VOL
388    o pkg/seaice (seaice_growth v 1.113):
389     - reverting seaice_growth to v 1.111 in order to have code with exact bit
390       compatibility with MITgcm_contrib/ifenty/Fenty_seaice_thermo_code_merge
391       CPP option SEAICE_OCN_MELT_ACT_ON_AREA removed in v 1.112 is reintroduced
392       runtime flag SEAICEareaFormula is kept but is inactive
393    o model/src:
394     - add new param to scale curvilinear grid distance and area when using
395       a different sphere radius from the grid-files.
396     - test/check multi-threads EXCH applied to local variable (cg2d_x)
397    o adjoint:
398     - enable adjoint of Stevens OB
399     - add dummy_in_dynamics to enable extraction of ADJrhoinsitu
400       (a bit delicate because of potentially modified adj. common block structure;
401       current switch is ALLOW_AUTODIFF_MONITOR_DIAG, could be changed later)
402    
403    checkpoint62s (2011/02/15)
404    o pkg/seaice (seaice_growth v 1.112):
405     - introduce SEAICEareaFormula run time parameter, which selects the recipe for
406       computing the ice cover tendency from effective thickness tendencies. Include
407       Ian Fenty's formula.
408     - remove 'undef SEAICE_OCN_MELT_ACT_ON_AREA' which may now be achieved using
409       SEAICEareaFormula.
410     - simplify notations for the various d_HEFF/d_AREA terms.
411    o pkg/gmredi:
412     - add Boundary-Value-Problem bolus transport (Ferrari etal, OM 2010) code
413       from Christopher Wolfe (UCSD); add partial cell factor in vertical derivative;
414       add a verification test-run (front_relax.bvp) to test GM_useBVP.
415    o pkg/seaice (seaice_growth v 1.111):
416     - for SEAICE_DO_OPEN_WATER_GROWTH, replace Gael's implementation with Ian's.
417     - the new SEAICE_DO_OPEN_WATER_MELT allows open-water air-sea heat fluxes to
418       also melt ice.
419    o pkg/seaice:
420     - McPhee formula for Ice-Ocean fluxes (provided by Ian Fenty).
421     - can be used by #define MCPHEE_OCEAN_ICE_HEAT_FLUX in SEAICE_OPTIONS.h
422    o pkg/cheapaml:
423     - from Nico Wienders: New version of this package.
424    o pkg/flt:
425     - add CPP options to prevent floats to re-enter the opposite side of
426       a periodic domain (default: keep periodicity)
427    o pkg/gmredi:
428     - apply exchange to GM_PsiX,GM_PsiY to get valid values near CS-corners
429       (needed for multi-dim advection).
430     - switch on GM Advective form in global_ocean.cs32x15 and update output.txt
431    o model/src:
432     - fix wrong re-setting of addMass array (ALLOW_ADDFLUID) for atmospheric run.
433    o tutorial_tracer_adjsens
434     - extend to NLFS and replace maskC by hFacC
435       (change reference output accordingly)
436    
437    checkpoint62r (2011/01/24)
438    o testreport:
439     - add option -deloutp (-do) to remove output file after successful run
440     - add option -mfile (-mf) for MPI machile-file and for each test-exp,
441       extract exact list of procs from this file ; adjust COMMAND by
442       replacing TR_MFILE & TR_NPROC with local machile-file & Nb of MPI procs.
443    o pkg/ecco: replace old ineffective way of penalizing deviations from
444      first guess (of obcs) with code by Matt Mazloff
445    o pkg/ctrl: add code that allows the use of ALLOW_OBCS?_CONTROL without
446      exf/cal
447      - ctrl_init: fix initialisation (computation of diffrec) for obcs-ctrl
448        and handle case of obcs?period == 0
449        Not affected by these changes: There is still an inconsistency in
450        the computation of start/endrec for the obcs variables for ALLOW_CAL
451        defined (see comment by Menemenlis, 7-Mar-2003)
452      - make S/R ctrl_get_gen_rec return something meaningful even if
453        ALLOW_CAL is not defined
454      - ctrl_getobcs?: simplify code so that it does not need to use
455                       S/R exf_swapfields
456    o testreport:
457       allow to test MPI with different number of processors for each experiment:
458       create file "SIZE.h.mpi" in each build dir.
459       Note: update of "-command" argument not yet implemented.
460    o model/src, pkg/autodiff, pkg/ecco, pkg/seaice:
461      alleviate the need for additional 3D tapes when using
462      the non-inear free surface in the adjoint. This is done
463      by adding an 'update' of hfacc etc. to their current
464      value at the beginning of forward_step.F.
465    o pkg/seaice
466      seaice_lsr: move stress-divergence computations out of outer pseudo-
467      timestepping loop
468    o pkg/obcs/obcs_prescribe_read.F: move 'CALL OBCS_EXTERNAL_FIELDS_LOAD'
469      up, so that the calls of the ctrl_* subroutines are really at the end
470      of the routine.
471    o pkg/gmredi:
472      allow to specify a 2-D horizontal map and a 1-D vertical profil
473      as scaling factor for Isopycnal diffusivity (Redi) and GM diffusivity.
474    o pkg/seaice:
475      move lsr iterations from seaice_dynsolver to seaice_lsr.
476    o pkg/seaice:
477      reduce memory footprint of seaice mutldim advection tapes,
478      by using a 2D tape independent of the generic_advdiff ones,
479      and setting GAD_AREA=1 etc. rather than GAD_AREA=101 etc.
480    
481    checkpoint62q (2010/12/29)
482    o model/src:
483      - check horizontal grid-spacing for unset or zero/negative values.
484      - change AD test hs94.1x64x5 to be truly a 2-D set-up.
485    o pkg/flt:
486      - use (recent) mdsio S/R MDS_READVEC_LOC instead of local FLT_MDSREADVECTOR
487      - precision of input and output files set according to readBinaryPrec
488        and writeBinaryPrec (previously always 64.b), pickup remains at 64 bits.
489      - initial float position from tiled file was not converted to index space
490        (looks like a bug): fixed to make it similar to initial pos. global file.
491    o global_ocean.cs32x15:
492       change SIZE.h of AD set-up to get same tiling as with MPI.
493       Update output_adm, output_adm.thsice (pass@14) & output_adm.seaice (fail@11)
494    o model/src:
495       add flag to control printing of domain fields (bathymetry, hFac ...) in
496       ini_mask_etc (call to plot_fieds_xy*).
497    o pkg/thsice:
498       if useEXF, some forcing fields are not valid in overlap: fixed by computing
499       over the interior only + apply EXCH at the end (like with SEAICE advection).
500    o pkg/mdsio:
501      - add 2 arguments to S/R MDS_PASS_R4/8toRL/S for overlap size of buffer
502        to copy to/from, so that it can be used to replace MDS_PASS_WH_R8toRL/RS.
503      - change barrier call for safe multi-threads access to 3-D shared buffer.
504      - MDS_READ/WRITEVEC_LOC use buffers from MDSIO_BUFF_3D.h (instead of local ones)
505      - replace call to MDS_PASS_WH_R4/8toRL with call to MDS_PASS_R4/8toRL and
506        remove the 4 S/R MDS_PASS_WH_R4/8toRL/S.
507    o pkg/flt:
508      - add fourth-order Runge-Kutta integration
509      - add basic exch2 support (only 1 facet supported so far!)
510    o pkg/mdsio+rw:
511      new S/R to read local (or tile independent) vector (read counterpart of
512       mds_writevec_loc, and front-end write_glvec_rl/rs).
513    o global_ocean.cs32x15: additional input_ad.seaice experiment
514        that uses pkg/seaice rather than pkg/thsice.
515        (using multidim advection for seaice)
516    o towards more F95 syntax for array specification in namelist:
517      - change "data.diagnostics" (data.ptracers was changed before checkpoint62p)
518        of all verification experiments.
519           e.g.:    line: fields(1,3)='ETAN    ','ETANSQ  ',
520          was changed to: fields(1:2,3)='ETAN    ','ETANSQ  ',
521      - finish adding "-DNML_EXTENDED_F77" to DEFINES list in pgf77 and g77 optfiles
522    o global_ocean.cs32x15: additional input.seaice experiment
523        that uses pkg/seaice rather than pkg/thsice.
524    
525    checkpoint62p (2010/12/17)
526    o pkg/thsice: rename (ad tape index) iicekey as ticekey, and move it
527        to THSICE_SIZE.h to avoid conflict with pkg/seaice.
528    o pkg/seaice: add seaice_diffusion.f seaice_map_thsice.f to adjoint.
529        allow for use of multim. advection in seaice adjoint.
530    o pkg/seaice: add diagnostics for snow precipitation and sublimation flux
531      - first attempt to close budgets by taking into account the freshwater
532        flux implied by the sublimation of snow and ice. So far only the
533        volume budget is closed, turn on with soon-to-be-retired-again CPP-Flag
534        SEAICE_ADD_SUBLIMATION_TO_FWBUDGET
535    o eesupp/src:
536      new S/R with new option (NML_EXTENDED_F77) to change array specification
537      from F95 standard to commonly accepted extended F77 form.
538      This would allow to use F95 syntax in namelist (needed with gfortran 4.4.5)
539      and to revert back to the original syntax (with -DNML_EXTENDED_F77)
540      for less tolerant f77 compiler (e.g., pgf77, g77).
541    o globalFiles:
542      commented out in parameter file "data" since it's not safe with MPI
543      (e.g., wrong on aces); keep it if useSingleCpuIO=T (but not doing much
544      in this case); no longer commented out in restart test (tst_2+2).
545    o add adTapeDir to specify a special directory where adjoint tapes are
546      written/read (adread_adwrite.F). adTapeDir is specified in data/PARM05
547      and cannot be used together with mdsioLocalDir.
548    o nesting pkgs:
549      - packages_init_variables : put call to OBCS_INIT_VARIABLES in last position
550      - update Gianmaria's Nesting pkgs (from Contrib/nesting_sannino)
551      - add parameter files + utils dir + output from short run on beagle.
552    o pkg/seaice:
553        fix seaice_growth.F store directives; update results of exp. lab_sea.ad
554    o pkg/seaice: explicitly store tsurfloc in seaice_solve4temp.F to avoid
555      unnecessary copying in adjoint code, requires new parameter NMAX_ITER
556    
557    checkpoint62o (2010/11/25)
558    o pkg/exf:
559      - change CPP option EXF_VERBOSE to run-time logical param exf_verbose.
560    o pkg/seaice:
561      - seaice_ocean_stress: split a loop for better vectorization of the
562        adjoint code
563      - seaice_growth.F: fix bug in conservation of freshwater connected to
564        capping of heff, put contribution into d_HEFFbyNEG
565      - replace irritating parameters SEAICE_latentWater/Ice and SEAICE_sensHeat
566        by something more sensible (parameters that are what their name implies)
567      - change some defaults, so that by default exf-parameters are used for
568        things like rhoAir, cpAir,latent/sensible heat parameters, in order
569        to reproduce the old results, many data.seaice now contain funny values
570        for cpAir and latent heat of sublimation
571    o packages_readparms.F: move exf_readparms up in line so that
572        exf-parameters are visible for other packages (e.g. seaice)
573    o debugMode & debugLevel=2:
574      - differentiate between debugMode & debugLevel=2:
575        debugMode: controls printing of debug messages (sequence of S/R calls).
576        debugLevel: controls printing of algorithm intermediate results and stats.
577      - remove "if debugLevel=2 => debugMode" but keep "debugMode =>  debugLevel=2";
578        => allows to print debug-stats without all sequence of call messages.
579      - switch control of debug print from debugLevel to debugMode in many S/R.
580    o pkg/obcs (obcs-sponge):
581        fix bug that was introduced on Oct 25 (in dynamics.F v1.151): put back the
582        call to OBCS_PRESCRIBE_EXCHANGES (need to exch gU,gV when using obcs-sponge)
583    o pkg/generic_advdiff:
584      - record overlap minimum size for each advection scheme;
585      - refine criteria on overlap minimum size;
586      - check and stop (in gad_check) if overlap size is too small.
587    o pkg/obcs:
588      - with ptracers: remove multiple calls to obcs_apply_ptracer (only done
589        once, in ptracers_implicit.F)
590      - with seaice: remove test on empty file name in obcs_apply_seaice (always
591        apply OB values when tile has OB)
592    o model/src, coriolis setting:
593      - integer parameter "selectCoriMap" (=0,1,2) replaces 3 logical
594        useConstantF, useBetaPlaneF, useSphereF ; can now read coriolis from
595        files (selectCoriMap=3) with any grid.
596      - add parameter "fPrime" for constant second Coriolis coeff (default=0).
597    o pkg/seaice/seaice_growth.F:
598        a few cosmetic changes that reduce the number of lines of code
599    o pkg/obcs: add boundary conditions following Stevens (1990)
600      - the code follows old MOM/NAOSIM code
601      - so far it is only implemented for the eastern and western boundaries
602        and NOT for pTracers
603    o pkg/rbcs:
604      - replace rbcsInIter by rbcsForcingOffset, the time in seconds at the
605        beginning of the first rbcs forcing period.
606      - add option rbcsSingleTimeFiles that makes rbcs read forcing data like the
607        offline package, i.e., one file per time, labeled by iteration number;
608        deltaTrbcs sets the timestep with which the data was generated;
609        rbcsIter0 is the forcing iteration corresponding to rbcsForcingOffset.
610      - rbcsForcingCycle=0 makes forcing non-cyclic.
611      - make arithmetic safe for negative times and odd forcing periods.
612    
613    checkpoint62n (2010/11/09)
614    o pkg/seaice:
615        fix masking in free-drift S/R ; update results of exp. lab_sea.fd
616    o pkg/obcs:
617       New S/R to copy tracer value from the OB location to narrow band region
618        (width = same as overlap) beyond the OB: preserve OB value (needed for
619        high-order scheme) which were overwritten by EXCH call if in overlap
620        region. Applied to theta, salt, ptracer and advected seaice variables.
621       With seaice: use maskInC in similar way as in gad_advection.F,
622        in seaice_advection.F and advect.F.
623       Update output of experiment seaice_obcs and change exp4 to test OBCS with
624        4th order Adv.Scheme. for pasive salt and ptracer.
625    o tools/genmake2:
626      - when looking for an optfile (not specified), only search for Fortran compiler
627        (remove sym-link test + setting of CPP + makedepend check + C-compiler check)
628      - in get_fortran_c_namemangling: use "$CC $CFLAG" to compile C test programm
629        (instead of "$MAKE genmake_test.o" since an existing Makefile can be wrong)
630      - set default for CPP to "cpp -traditional -P" (was the case without specifying
631        an optfile, but otherwise default was just "cpp".
632      - comment out PLATFORM=$p_PLATFORM (no idea where p_PLATFORM comes from)
633      - when "CC" is not set in the optfile, look for possible C compiler
634        (instead of just setting CC=cc)
635      - put back version v.169 modif (from 2008/02/15), was dropped in v.173 changes:
636        => add a ".F" to ".o" rule for source files with no "#include" (such as
637           port_rand.F); otherwise, default ignores FOPTIM and just uses FFLAGS.
638      - move gfortran before g77 in list of possible Fortran compiler (consistent
639        with reference compiler switch from g77 to gfortran)
640    o pkg/seaice:
641      o remove SEAICE_OLD_AND_BAD_DISCRETIZATION-code, add a test to
642        seaice_check that stops the model, when the CPP flag is used.
643      o seaice_growth.F: make capping of ice volume conserving by returning the
644        capped ice as freshwater to EmPmR. This does not change the verification
645        experiments but will change runs where the capping is acutally active
646    o change reference platform+compiler from faulks+g77 to baudelaire+gfortran
647      (except the 2 fizhi test exp.); update output of exp.: bottom_ctrl_5x5,
648         global_ocean.cs32x15 (icedyn, thsice, AD thsice), global_ocean_ebm (AD),
649         lab_sea (fd, hb87, salt_plume), MLAdjust (3/5) and vermix (dd)
650    o tools/genmake2:
651      - merge genmake_warnings & genmake_errors into 1 log file: "genmake.log")
652      - change DUMPSTATE default to false (can use "-ds" option to switch it to T)
653      - clean previous genmake log files before anything else.
654      - change Makefile to remove testreport log files (*.tr_log) and genmake log
655        files only with "CLEAN" target (instead of "Clean");
656    o pkg/generic_advdiff:
657      Change OBCS in multiDim advection (gad_advection.F):
658       Use maskInC to prevent intermediate update of tracer-field in OB regions,
659       thus keeping current-time-step OB values; and remove the call to OBCS_APPLY
660       which were applying future time-step OB values.
661      This way, all explicit calculations use current-time-step OB values
662       (simpler and more consistent).
663      Affects results when set-up uses time-varying OBC and multi-dim advection;
664       update output of experiment seaice_obcs.
665    o pkg/seaice:
666      move OPTIONS (formerly locally defined) to SEAICE_OPTIONS.h:
667       this includes SEAICE_GROWTH_LEGACY (+ SEAICE_DO_OPEN_WATER_GROWTH &
668         SEAICE_OCN_MELT_ACT_ON_AREA ) and SEAICE_SOLVE4TEMP_LEGACY.
669      Default (pkg/seaice/SEAICE_OPTIONS.h) is to define SEAICE_SOLVE4TEMP_LEGACY
670       but leave SEAICE_GROWTH_LEGACY undef ; For now, keep verification exp
671       unchanged (SEAICE_GROWTH_LEGACY defined in */code*/SEAICE_OPTIONS.h)
672    o pkg aim (2010/10/26):
673      - Introduce ALLOW_INSOLATION, moving toward a more general incoming solar radiation
674        formulation with obliquity, eccentricity, ... as run-time parameters,
675      - Introduce diagnostics for top-of-the-atmaophere incoming solar radiation and
676        upward shortwave radition at the surface (all-sky and clear-sky).
677    o pkg/obcs:
678      - writing sections with globalFiles=T does not work: switch to tiled-files
679        when writing sections for OBCS (change pkg/rw/write_rec.F accordingly).
680      - fix index bug (OB_Ie -> OB_Iw_) in obcs_apply_uvice.F
681      - apply OBCS_SEAICE_COMPUTE_UVICE to both uice and vice at all obcs
682    
683    checkpoint62m (2010/10/21)
684    o pkg/seaice: vectorize seaice_solve4temp.F
685      - move iterations loops outside of i/j-loops
686      - requires 2D arrays for TB and effConduct
687      - add 2D iceOrNot to replace HICE_ACTUAL.GT.0, as HICE_ACTUAL is
688        modified in this routine
689      - a little bit of clean up, adjusting indentation, etc.
690      - replaced a few TEN**a by exp(a*log(10.)) in new code for better
691        performance and '**TWO' by '**2' (because TWO is a float),
692        replaced ONE, ZERO
693    o eesupp/src:
694       fix flow dir for exch1_z_RX_cube, exch1_uv_RX_cube & exch1_bg_RX_cube
695    o pkg/seaice/seaice_growth.F
696      Revision 1.89 of seaice_growth.F completes the overall october 2010 revision and
697      merging process. The merged routine has two branches, and one activates the 'evolution'
698      branch by setting SEAICE_GROWTH_LEGACY to undef (at the top of the routine for now).
699      In summary, here is what the '10/10 revision' did consist of
700        part 1: seaice_growth.F revisions 1.71 to 1.75
701          - Preliminary seaice_growth.F clean-up, keeping test results strictly unchanged.
702            The emphasis here was on improving readability (e.g. by trying to use meaningful
703            variable names) and modularity (e.g. by adding arrays to store heff etc. updates).
704        part 1.5:
705          - revising the lab_sea experiment to make it a more useful (i.e. stable
706            and representative of an actual model run). This was done by generating a
707            (winter) pickup to start from, switching back the main experiment dynamic
708            solver from evp to lsr, having one of the experiments use the free drift solution.
709        part 2: seaice_growth.F revisions 1.76 to 1.85
710          - Sorting out hard-coded constants that prevented heat and fresh water conservation.
711          - Sorting out the various fields units and sign (set early on and reset at the end)
712            to avoid numerous scalings/re-scalings. By v1.85 the basic unit for ice, heat and
713            fresh water stock is 'effective ice meters', and >0 implies more ice/snow.
714          - Using tendency terms arrays (d_HEFF* etc.) to alleviate remaining code locks,
715            and simplifying logical expressions to further improve readibility.
716        part 3: seaice_growth.F revisions 1.86 to 1.89
717          - Re-organize the blocks of code more logically.
718          - Merging the '_if.F' pieces that add something new.
719    o pkg/thsice:
720      - vectorize thsice_solve4temp and thsice_get_exf.
721        Problem: thsice_solve4temp has an unvectorizable statement that
722        might also be problematic for TAF
723      - thsice_get_exf: add the ALLOW_BULK_LARGEYEAGER04 CPP-flag. This
724        does not change the verifcation experiment, but will change all
725        experiments that have this flag undefined (not tested in verification);
726        a little reorganization to save a few 2D fields and recomputations
727      - 1st step of revisiting thsice adjoint (major recomp. sorted out)
728      - 2nd step:  fix some store dirs
729        o seems to work somewhat, i.e. using ifort but not g77
730        o likely cause are incomplete init. or recomputation
731        o start verification/global_ocean.cs32x15/input_ad.thsice
732    o pkg/obcs: add support for exch2
733      - the position of the boundary and prescribed values are specified using
734        a global domain with exch2 facets stacked
735        - in x for N,S boundaries (like W2_mapIO=-1)
736        - in y for E,W boundaries (so E,W boundaries do not overlap)
737    o pkg/mdsio: add support for writing global sections with exch2
738        file layout is as for obcs described above:
739        - for x-z sections, facets are stacked in x (like W2_mapIO=-1)
740        - for y-z sections, facets are stacked in y
741    o pkg/thsice:
742       - change a few routines for better vectorization: thsice_albedo.F,
743         thsice_step_temp.F, and in thsice_calc_thickn.F. Results are
744         not affected, but in particular the latter routine has changed
745         dramatically (not necessarily easier to read now).
746       - re-arrange calculation in THSICE_SOLVE4TEMP: move outside of i,j loops
747       iteration loop and call to S/R THSICE_GET_BULKF & THSICE_GET_EXF.
748    o verification/lab_sea:
749      - overhaul of the forward model experiments. The main motivation
750        for this revision is that lab_sea has proven quite fragile (when
751        changing the sea-ice code, and switching platforms) to a point
752        when failures were very hard to attribute to specific code problems.
753      - the suspected reason for this fragility is noise amplification by evp so,
754        to start with, we decided to replace evp with lsr in the main experiment.
755      - the input.lsr experiment thus became obsolete and was removed.
756      - it was replaced with the input.fd experiment that uses an
757        analytical "free drift" solution as the ice velocity field.
758      - Taken together, input (lsr), input.fd (free drift) and input.hb87 (evp)
759        will hopefully allow us to discriminate problems due to dynamic solvers
760        from problems due to the thermodynamic code. input.salt_plume (lsr) allows
761        us to test additional options, along with the salt plume package.
762      - Finally a pickup was generated (at the end of a one year run) to
763        make the tests more representative of an actual model run. Previously
764        the tests starting point was a 1m thickness of ice everywhere.
765    o pkg/seaice:
766      - introducing S\R seaice_freedrift.F that compute the
767        analytical solution to an approximate ice momentum
768        equation (i.e. the simple stress/coriolis balance).
769      - define SEAICE_ALLOW_FREEDRIFT to trigger the computation
770        of the free drift velocity field, and enable its use.
771        To actually use the free drift solution as the model ice
772        velocity field set SEAICEuseFREEDRIFT to .TRUE. in data.seaice.
773    o move "useOASIS" from PARAMS.h to EEPARAMS.h and read it from "eedata"
774    
775    checkpoint62l (2010/10/04)
776    o pkg/seaice:
777      -fix the USE_ORIGINAL_SBI version (for variable freezing point);
778      -use "celsius2K" in SEAICE_VARIABLE_FREEZING_POINT and in new
779       version (with USE_ORIGINAL_SBI undef);
780    o add hooks for new packages OASIS, the package will follow
781      (hooks exclude the seaice pkg for now)
782    o pkg/autodiff: ALLOW_AUTODIFF_WHTAPEIO
783      Option to use mdsio_read_whalos.F/mdsio_write_whalos.F,
784      rather than mdsio_readvector.F/mdsio_writevector.F, within
785      adread_adwrite.F to read/write adjoint-related tapes to disk.
786    o eesupp and pkg/mdsio: ALLOW_WHIO
787      Option to write/read 2D fields to files including tiles halos.
788      The main purpose is for adjoint related "tape I/O".
789      The secondary purpose is for debugging phases.
790      A word on those rather specifically intended purposes.
791      The code was meant to be stripped down to the bare minimum.
792      Typically, there is a unique and basic mapping to the global
793      buffer (tile by tile, then proc by proc, then level by level), and
794      byteswaps and meta-files are omitted. Indeed the (*_WH*) code is not
795      meant to generate user friendly outputs of various shapes and forms.
796      Rather it is intended, for the knowledgeabale developers,
797      to be largely independent of the many mdsio options, to allow
798      outputs of tiles+halos in debugging phases and in adjoint runs,
799      and to allow some flexibility in tuning (adoint) I/O depending on each
800      file system behavior. With regard to tuning, most of the potential knobs
801      (to leave files open, to allocate the I/O indep. of usesinglecpuio,
802      to specify directories, to specify the typical size of I/O calls, etc.)
803      are not yet included, and will be added if they prove useful.
804    o pkg/seaice:
805       fix uninitialised arrays in USE_ORIGINAL_SBI version of seaice_solve4temp.F
806    o pkg/seaice:
807       new S/R seaice_solve4temp.F: this is the merged version of Ian Fenty
808       code (seaice_budget_ice_if.F) which enable to recover old standard
809       code (seaice_budget_ice.F) when option USE_ORIGINAL_SBI is defined.
810       temporary: add "#define USE_ORIGINAL_SBI" at the top of seaice_solve4temp.F.
811    o model/src (rStar):
812       use simple average (not area weighted) of rStarFac at U,V point when using
813       vectorInvariant and selectKEscheme=1,3 (consistent with mom. vertical advection)
814       update output of exp. fizhi-cs-32x32x40 and fizhi-cs-aqualev20.
815    
816    checkpoint62k (2010/09/17)
817    o adjoint
818       * changed verification/global_ocean.cs32x15 ; adjoint now tests
819         Adams-Bashforth 3 + NLFS + RSTAR
820       * some more modifs required for ECCO-GODAE v4
821    o pkg/seaice
822       add SEAICE_AGE_VOL option to use volume instead of area for
823       integrating SEAICE_AGE
824    o model/src:
825       first check-in of sigma & hybrid-sigma coordinate code ; also includes
826       non-linear free-surface parts ; but pressure-gradient not yet coded.
827    o pkg/ptracers:
828       option for ptracer to convert Salt Relax into additional EmP.
829        tested in exp. global_ocean.90x40x15.dwnslp (update output)
830    
831    checkpoint62j (2010/08/25)
832    o pkg/ggl90:
833       other minor changes: remove 3-D temp array gTKE (+ add argument myIter)
834    o pkg/dic: car_flux.F, phos_flux.F
835      - reduce number of exp-calls in order to improve performance
836      - clean up a little (replace fields by their macros, etc., fix
837        typo in CPP-flag)
838    o pkg/ggl90: minor changes
839      - GGL90diffKrS was removed --> always use GGL90diffKr
840      - GGL90viscAr was removed --> replaced with GGL90viscArU, GGL90viscArV
841      - hack of mxlMaxFlag=2 --> ensure mixing between first and second level
842        (commented out for now)
843      - change in max/min operations to ensure that smoothing is ok
844      - smoothing of GGL90viscAr was moved to ggl90_calc.F (as done for GGL90diffKr)
845      - always use diffKrNrT as background profile (i.e. never use diffKr field)
846    o pkg/cfc: bug fix, AREA(i,j,1,bi,bj) -> AREA(i,j,bi,bj)
847    o pkg/dic:
848      - model/src/impldiff.F: if TARGET_NEC_SX, extend loop ranges for better
849        vectorization
850      - small bug fix in insol for the unlikely case of a cartesian grid
851      - towards vectorizing the dic package: bio_export.F, car_flux.F, phos_flux.F
852        + now vectorize, which also removes adjoint recomputations;
853        + replace integer maksp1 by _RL maskp1
854        + replace a**x by exp(x*log(a)) in phos_flux.F for speed
855    
856    checkpoint62i (2010/07/21)
857    o pkg/flt:
858      - with OBCS: stop floats which enter the OB region
859    o model/src:
860      - use tempVertAdvScheme & saltVertAdvScheme (instead of horizontal ones)
861        for implicit vertical advection.
862    o pkg/seaice:
863     - account for melting in seaice age evolution.
864     - remove double counting of seaice ridging effect on seaice age.
865    
866    checkpoint62h (2010/06/18)
867    o pkg/exch2:
868     - remove exch2_*xy_rx files: call was replaced with exch2_*3d_rx(myNz=1).
869    o tools/genmake2
870      - remove "-pdefault" option: redundant with the use of "packages.conf";
871      - remove file pkg/pkg_default : set the default as a pkg group
872        ("default_pkg_list") defined in pkg/pkg_groups;
873      - fix for case pkg/pkg_depend is missing (was hanging before);
874      - add option "-pgroups" to specify a different pkg_groups than the default.
875    o verification/adjustment.cs-32x32x1:
876       add a "minimal" set-up test (code_min & input_min) which only compiles
877       eesupp/src and the 2 pkgs (exch2 & debug) which don't need model/src & inc.
878    o tools/genmake2
879      - extend pkg_depend rules to model & eesupp (e.g., if model depend on [pkg]))
880      - fix details of checking for mnc & profile pkg when NetCDF is unavailable.
881    o pkg/exf: merge exf_bulk_largeyeager04 into exf_bulkformulae because these
882      files are nearly the same anyway.
883      Step 1: make exf_bulkformulae look like exf_bulk_largeyeager04:
884       - redefinition of tau(i,i) (by a factor of ustar)
885       - 1./exf(Const/T) -> exf(-Const/T) (big change in the results)
886       - replace rhonil by rhoConstFresh in computation of evap (bug fix)
887       - replace u/vstress=tau*rd*ws*cw by tau*rd*u/vwind (changes results)
888       - replace
889         rd(i,j)= rdn(i,j)/(exf_one - rdn(i,j)/karman*psimh )
890         shn    = sh(i,j,bi,bj)*rd(i,j)/rdn(i,j)
891         by
892         shn    = sh(i,j,bi,bj)/(exf_one - rdn(i,j)/karman*psimh )
893         (changes results)
894       -> exf_bulkformulae v1.22,
895          update verification experiments lab_sea, offline_exf_seaice, seaice_obcs
896          (lab_sea: output.hb87.txt 1.11, output.lsr.txt 1.25, output.salt_plume.txt 1.13,
897                    output.txt 1.63
898           offline_exf_seaice: output.seaicetd.txt 1.7
899           seaice_obcs: output.txt 1.10)
900      Step 2: do the actual merge and remove exf_bulk_largeyeager04.F
901       -> exf_bulkformulae v1.23,
902          unfortunately requires updating lab_sea.salt_plume (6 matching digits),
903          and global_ocean.cs32x15.icedyn (only 11 matching digits)
904      Also update output_adm of exp. lab_sea (all 4) and offline_exf_seaice.
905    o adjoint of exch-1:
906     - pass high-level EXCH S/R through TAF (eesupp/src/exch_ad_diff.list)
907       (note: was already like this when using EXCH-2) and remove flow dir
908       and hand-written AD version of high-level EXCH S/R (pkg/autodiff);
909     - provide flow-dir for low-level exch1 S/R (eesupp/src/exch1_ad.flow);
910     - update pkg/exch2 diff list.
911    
912    checkpoint62g (2010/05/19)
913    o eesupp/src (exch-1):
914     - split exch_rx.F into Forward S/R (exch1_rx.F) and Adjoint S/R (exch1_rx_ad.F)
915       and remove argument "simulationMode"; same thing for all exch_*rx_cube.F
916       (renamed to exch1_*rx_cube.F).
917     - change accordingly exch_*_rx.template and AD version in pkg/autodiff
918       to call new exch1 S/R ; update Makefile and .cvsignore.
919     - replace call to exch2_xy_rx S/R with exch2_*3d_rx(myNz=1) (will remove
920       exch2_xy_rx later)
921      Note: after updating your code, need to run "make clean" in eesupp/src
922    o test experiment bottom_ctrl_5x5:
923       new output_adm.txt with fewer grdchk & less monitor output.
924    o model/src:
925      remove the call to ini_cori in initialise_varia.F (just keep the usual one
926       in initialise_fixed.F). More consistent with coriolis & horizontal grid
927       beeing treated in the same way (ini_grid is not called a 2nd time).
928    o pkg/exf:
929      - rewrite exf_bulk_largeyeager04.F for better vectorization, changes
930      global_ocean.cs32x15/input.icedyn (11 digits of agreement), updated
931      - fix adjoint (used worked for ALLOW_ATM_WIND defined, works for this now)
932      - cosmetic changes to exf_bulkformulae.F to make it look more like
933        exf_bulk_largeyeager04.F
934    o eesupp/src (exch-1):
935      - Fix AD EXCH code for 2-D domain special cases (Nx=1 or Ny=1).
936      - Separate buffer filling and MPI sending: allow EXCH-1 to work for local
937        array (non-shared) when using MPI+MTH. Also reduces number of BARRIER
938        (even without using MPI).
939      - Message mode: move RecvAck setting (indicator of buffer being ready)
940        from send_put to recv_get S/R (was useless before, but not sure if
941        it's much more useful now);
942      - Switch the order of sync: MPI-proc 1rst and then threads;
943      - take out spin-waiting code (#undef EXCH_USE_SPINNING), use BARRIER instead.
944      - fix AD code for communication mode ='get' (but not used).
945    o model/src:
946      initialise dPhiHydX,dPhiHydY inside calc_grad_phi_hyd.F (so that TAF does
947      not drop it in S/R mddynamics, producing NaN in hs94.1x64x5 AD-test exp).
948    o utils/matlab/rdmnc.m: adapt to be able to use the generic matlab netcdf API
949    o pkg/ctrl: require a specific set of control variables and exf-flags for
950      adjoint of seaice (stop in ctrl_check.F if conditions are not satisfied)
951    o model/src:
952     a) 1rst version of a new driver S/R to turn-off output freq and flags after the
953       1rst forward sweep, to avoid over-writing output files during recomputations
954       recomputations (& grdchk); called from cost_final.F (& ctrl_init_ctrlvar.F ?)
955     b) 2nd version:
956      - add specific pkg S/R for seaice & ptracers (called from S/R TURNOFF_MODEL_IO);
957      - switch-off more output flags (exf_monFreq, chkPtFreq, dumpInitAndLast,
958         writePickupAtEnd) + seaice & ptracers output;
959      - do not switch off MNC flags (otherwise, won't get admonitor netcdf file)
960    o model/src:
961      - new S/R rotate_uv2en_rl (..._rs) that rotates vector fields.
962    o pkg/exch2:
963      - remove "simulationMode" from arg. list of S/R EXCH2_RX1,2_CUBE ;
964      - add argument "signOption" to EXCH2_RX1_CUBE (will be needed for SM exch).
965    o pkg/autodiff & exch2:
966      process exch_uv_agrid_3d_rx.f & exch2_uv_agrid_3d_rx.f through TAF
967      (for now, only if ALLOW_EXCH2 is defined).
968    o pkg/autodiff:
969      - include PACKAGES_CONFIG.h in exch*ad.flow & exch*ad.F
970        (not supposed to be in CPP_OPTIONS.h) to get ALLOW_EXCH2 defined correctly.
971       + clean-up comments (_RS is not always real*4)
972      - fix bug in ADEXCH_UV_3D_RX (without EXCH2, was calling the forward exch S/R)
973      - add a stop in ADEXCH_UV_AGRID_3D_RX if trying to use it with EXCH2:
974        was calling a forward exch2, which is wrong ; used in SEAICE & EXF pkgs.
975    o testreport (AD-tests):
976      no longer link files from dir "../input" (1rst link files from
977      "../input_ad.[xx]" if secondary test "xx" and then from "../input_ad")
978    
979    checkpoint62f (2010/04/29)
980    o model/src/the_main_loop.F:
981      adjust store directives for seaice evp and multicategory according to
982      pkg/ecco/the_main_loop.F
983    o adjoint:
984      global_sum_ad was incomplete (noted many times by many people ;)
985      nice description by Jean U. as follows:
986      * allreduce(var) in global_sum.F can be interpreted as
987        reduce(sum) followed by broadcast of sum.
988      * The adjoint of that is
989        sum(adjoint) followed by broadcast(summed adjoint value)
990        or in other words, allreduce(sum, adjoint vars)
991      We were missing the sum(adjoint)!
992      Benign, except(!) for "global" scalars appearing in tile loops (bi,bj)
993      (noted by J.M. Campin, e.g., in cost_ssh_mean, variable offset).
994      The fix should produce 16-digit accuracy between
995      single-CPU multi-tile (e.g. nSx=2, nPx=1) and
996      multi-CPU single-tile (e.g. nSx=1, nPx-2)
997      We'll probably change this yet again shortly
998    o eesupp/src:
999      - fix global_sum_r4 (wrong from previous modif in Jun 2009; ever used ?)
1000    o pkg/icefront
1001      - ALLOW_SUBGLACIAL_RUNOFF option adds capability for time-evolving
1002        specification of addmass array based on a 2D field, which is added
1003        at bottommost wet level at each horizontal location.
1004    o model/src:
1005     horizontal grid initialisation (other than curvilinear): add code for Exch2 IO
1006     layout; (not always compatible with delX,delY setting; commented out for now).
1007    o pkg/exch2:
1008     change tile to processor setting (case nSy*nPy > 1): allows default model mapping
1009     (myX and myYGlobalLow) to be used for simple (1 facet, no blank tile) config.
1010    
1011    checkpoint62e (2010/04/15)
1012    o pkg/obcs:
1013      - fix wrong index in OBCS_SPONGE_V for Eastern-OB (reported by David Hebert).
1014    o pkg/dic:
1015      -fix bug in fe_chem.F for multi-tile (nSx*nSy > 1) set-up;
1016        (note: not presently tested in any forward verification exp.)
1017       update tutorial_global_oce_biogeo AD output file.
1018    o pkg/exf:
1019      - account for the variation of albedo as a function of zenith angle
1020        by defining ALLOW_ZENITHANGLE in EXF_OPTIONS.h
1021    o build_options:
1022     - rename "linux_ia64_ifort+mpi_ice_nas" to "linux_amd64_ifort+mpi_ice_nas"
1023    o pkg/dic:
1024      change DIC atmos-CO2 box (method 3, dic_int1=3) initialisation & restart:
1025      - use binary pickup file for restart;
1026      - initialise atmos-CO2 box from dic_pCO2 parameter;
1027      - fix multi-threaded.
1028    o pkg/rbcs:
1029     - clean-up RBCS code: add RBCS_OPTIONS.h file ; fix multi-threaded ;
1030       change (+ fix IO calls) type of array RBC_mask from _RL to _RS.
1031     - add RBCS to exp4 passive tracer 01 (rbcs was previously untested)
1032       and update output.txt
1033    o pkg/kpp:
1034     - add diagnostics for KPP non-local flux of Temp, Salinity and pTracers;
1035     - change diagnostic of KPP non-local term: output average of KPPghat*KPPdiffKzS
1036       (= ratio of KPP non-local (salt) flux relative to surface-flux) when
1037       using pkg/timeave & pkg/diagnostics (diag 'KPPghatK' replaces 'KPPghat ');
1038     - change pkg/offline to read-in average KPPghat*KPPdiffKzS from file
1039       KPP_ghatKFile (instead of the average of KPPghat from file KPP_ghatFile).
1040    o pkg/offline:
1041      fix bug in S/R OFFLINE_FIELDS_LOAD regarding surfaceForcing conversion factor
1042      (bug was added in version 1.10 on 2007-08-23).
1043    o pkg/offline:
1044      - no need to specify periodicExternalForcing, etc ... to use offline pack
1045      - offline input files no longer just single prec --> parameter offlineLoadPrec
1046    o verification/lab_sea:
1047      change AD test to multi-tile setup and update all 4 AD output.
1048      NOTE: while cost function values remain very similar,
1049      gradients are very different, although gradient checks are self-consistent
1050      Should try to get to the bottom of this (cost function summation order?)
1051    o pkg/dic:
1052      in carbon_chem.F, replace log10 (AUTODIFF) with explicit form to avoid
1053      a weakness of TAF that drops part of double precision in log10 derivative.
1054      <= changes removed since problem has been fixed in current TAF version 1.9.71
1055      update AD output of exp. tutorial_dic_adjoffline & tutorial_global_oce_biogeo.
1056    o pkg/ecco:
1057      add missing "_d 0" in cost_readers.F, cost_readtopex.F & cost_readtopexmean.F
1058      update all 4 lab_sea AD output.
1059    
1060    checkpoint62d (2010/03/22)
1061    o build_options:
1062      remove '-r8' (and '-i4') from linux_*pgf and linux_*ifort optfiles.
1063  o remove unbalanced quote (single or double) in commented line of source code  o remove unbalanced quote (single or double) in commented line of source code
1064    (may cause some warning with some preprocessor/makedepend versions).    (may cause some warning with some preprocessor/makedepend versions).
1065  o pkg/seaice:  o pkg/seaice:
# Line 34  o tools/build_options: Line 1090  o tools/build_options:
1090      but keep the former optfile for few weeks for smooth transition      but keep the former optfile for few weeks for smooth transition
1091  o pkg/ecco  o pkg/ecco
1092    - allow user defined cost function contributions    - allow user defined cost function contributions
1093          CPP: ALLOW_USERCOST_CONTRIBUTION       CPP: ALLOW_USERCOST_CONTRIBUTION
1094          USAGE: compute contributions in cost_usercost_all.F       USAGE: compute contributions in cost_usercost_all.F
1095    - note: this is identical to what ALLOW_GENCOST_CONTRIBUTION once was.    - note: this is identical to what ALLOW_GENCOST_CONTRIBUTION once was.
1096        the two options are complementary.        the two options are complementary.
1097  o pkg/smooth  o pkg/smooth
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