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revision 1.1370 by jmc, Thu Jan 27 20:52:10 2011 UTC revision 1.2004 by jmc, Fri May 30 17:19:57 2014 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/sbo:
8      - update from Katherine Quinn: evaluate mass directly from density and SSH
9        (budget using Finite Volume method) instead of from bottom pressure.
10      - allow testreport to collect few selected SBO output ; tested in exp.
11        global_ocean.90x40x15 (after updating the results, to include SBO output).
12      - fix some multi-threading issues (in output part).
13    o model/src & most packages:
14      - always call {PKG}_READPARMS even if corresponding use{PKG}=F;
15      - in {PKG}_READPARMS, in case use{PKG}=F: add a call to new S/R
16        PACKAGES_UNUSED_MSG to print a weak warning when parameter file
17        "data.{pkg}" exist ; and leave the S/R (return) just after.
18      - more standard LAND pkg interface (land_init_fixed.F, land_check.F).
19        + call LAND_READPARMS from packages_readparms.F
20    o pkg/seaice:
21      - remove code that resets useThSice in S/R seaice_readparms and
22        replace by a warning in S/R seaice_check
23      - remove parameter MULTDIM, replace with nITD and runtime
24        parameter SEAICE_multDim (still hard-wired to nITD if
25        SEAICE_ITD is defined)
26    
27    checkpoint64x (2014/05/24)
28    o verification/lab_sea:
29      - update adjoint and TLM output following changes to pkg/salt_plume
30      - un-do the update after putting back local recip_Cp in few places.
31    o pkg/salt_plume: modifications by An Nguyen:
32      - add capability to do brine rejection (salt-plume) as function of
33        volume+tracers (instead of only salinity tracer).
34      - conserve volume by exchanging volume from each kLev to above to
35        accommodate in-coming brine volume
36      - store surface and klev exchanged fraction + volume in 4 new 3-d arrays
37      - switch KPP surf buoyancy due to brine forcing to 3-d
38        (3 more 3-d arrays, 2 for SPforcing[T,S], 1 for boplume)
39      - add salt_plume_volfrac, salt_plume_apply, salt_plume_tendency_apply_t
40      - unrelatedly, also add ad-hoc capability to vary salt_plume scheme
41        in East/West Arctic.
42    o pkg/sbo:
43      - incorporate modifications from Katherine Quinn to enable the use of sbo
44        pkg in ECCO-v4 set-up ; remove SBO-TimeAve output ; add monitor-like
45        output for future testreport verification (unfinished).
46    o pkg/atm_phys:
47      - change diagnostics (AtPh_Trf & AtPh_Qrf) of DARGAN_BETTSMILLER S/R:
48        skip the reseting of t_ref & q_ref to initial t & q ; this preserve the
49        output of S/R CAPECALCNEW (Parcel temp & q) for diagnostics.
50    o pkg/seaice
51      seaice_calc_ice_strength.F: modify expression to avoid divisions
52        (affects truncation)
53      seaice_do_ridging.F: clean up the insectarium
54      - fix a bug that was compensated by areaScaling (-> remove areaScaling code)
55      - added SEAICEsnowFracRidge to redistributed snow (2nd bug)
56      - set closing/openingRate to zero where no extra iteration is need (3rd bug)
57      - add some debugging information and error messages (warnings)
58    o model/src: modifications relatd to atmosphere p*:
59      - Switch to more accurate p* coordinate slope term (calc_grad_phi_hyd.F)
60      - With p* or Sigma-P, use constant reference Pot.Temp (thetaConst) instead
61        of vertical profile tRef in geopotential background and anomaly.
62      - Acount for true p* correction in theta <-> T conversion in pkg/aim_v23
63        and pkg/atm_phys.
64      - Update FWD output of experiments: aim.5l_cs (x2), fizhi-cs-32x32x40,
65        fizhi-cs-aqualev20, fizhi-gridalt-hs, tutorial_held_suarez_cs, cpl_aim+ocn.
66    o pkg/seaice: fix a bug in seaice_prepare_ridging.F, forgot a sqrt
67    o pkg/ptracers: compute ptracer source/sink due to linear free surface.
68        not used right now, but can be used in BGC packages to fix conservation.
69    o pkg/dic, pkg/gchem: move tracer_meanarea to gchem, so it can be used by
70        other packages too.
71    o pkg/seaice/seaice_calc_ice_strength.F: replace SEAICE_rhoSnow by
72        SEAICE_rhoIce in the Rothrock (1975)-type strength calculations (bug fix)
73    o model/src:
74      - since we have several heat capacity (even in model/src), define "recip_Cp"
75        as local variable (no longer in common block) to avoid any confusion.
76      - add thetaConst in PARAMS.h (to be used with pStar or sigma-P coords).
77    o pkg/exf:
78      - from Jeff Scott: add option (#define EXF_CALC_ATMRHO) to calculate local
79        air density as function of air Temp, Humidity and atm pressure.
80    
81    checkpoint64w (2014/05/02)
82    o verification:
83      - update output_adm.txt files for experiment global_ocean.cs32x15 (seaice &
84        seaice_dynmix) and lab_sea (primary test & noseaicedyn): moving/changing
85        code from seaice_growth.F & seaice_advdiff.F to new ridging routines
86        seaice_reg_ridge.F seaice_do_ridging.F affects AD gradient
87        (down to 8-7 matching digits for global_ocean and 5-6 for lab_sea).
88    o model/src: for atmosphere in p* coords:
89      - store factor rStarFacC**atm_kappa (= pStarFacK) in common block
90      - implement more accurate p* coordinate slope term (in calc_grad_phi_hyd.F),
91        but not yet activated.
92    o pkg/seaice: fix restart problem for ITD with new ice strength parameterisation:
93      - move computation of opnWtrFrac = 1-AREA to before computing ice strength
94      - this changes the results (but not for any verification experiment, because
95        none tests this), but avoids having an extra field in the restart files
96    o pkg/seaice: remove global variable TICE (not needed)
97      - replace by TICES or local variable where necessary (cost_seaice_test,
98        seaice_diagnostics_state)
99      - move copying TICE to TICES from seaice_check_pickup to seaice_read_pickup
100      - use specific read/write routines for reading and writing individual leves
101        of a multilevel field
102    o pkg/ctrl & model/inc:
103      - move additional anomaly fields of control vars (related to options:
104         ALLOW_KAPGM_CONTROL, ALLOW_KAPREDI_CONTROL and ALLOW_BOTTOMDRAG_CONTROL)
105        from DYNVARS.h into new header file: CTRL_FIELDS.h
106    o pkg/seaice: some small modifications to the ridging code
107      - make fw2ObyRidge a global variable and add the freshwater flux to
108        seaice_growth
109      - pass actual thickness from seaice_prepare_ridging, so that it is
110        computed only in one place and compute it in the same way as in
111        seaice_growth
112      - initialise more fields in seaice_do_ridging that where cause floating
113        point exceptions over land
114    o pkg/seaice: preparations for ridging code and first real ridging code
115      - move most of "PART 1" of S/R seaice_growth into a new and separate
116        S/R seaice_reg_ridge that will both regularize the state variable after
117        advection call the actual ridging routine;
118      - requires to make 5 fields global fields: d_HEFFbyNEG,d_HSNWbyNEG,
119        d_AREAbyRLX,d_HEFFbyRLX,saltFluxAdjust;
120      - remove ridging code from seaice_advdiff
121      - clean up remaining part 1 of seaice_growth in an attempt to make it
122        more readable (this is probably subjective)
123      - call seaice_itd_redist once in the initialisation phase to have the initial
124        conditions in the correct category
125      - finally: add new ridging routine for ITD code
126    
127    checkpoint64v (2014/04/11)
128    o pkg/ecco:
129      - add runtime parameters mdt[start,end]date[1,2]
130      - rename variable "tpmean" as "mdt" and "topexmeanfile" as "mdtdatfile"
131    o pkg/seaice:
132      - make deltaC a global variable, so that it can be used in ridging code
133      - first step towards ridging: introduce new routines that compute
134        ice strength based on ridging parameters
135      - add diagnostic for HSNOWITD
136      - add opnWtrFrac as a global variable (required for ridging scheme)
137    o pkg/salt_plume + pkg/seaice/seaice_growth.F
138      - add SALT_PLUME_IN_LEADS flag to activate pkg/salt_plume only when ice
139        AREA exceeds a threshold (code contributed by I.Fenty in 2011)
140    o verification/hs94.1x64x5:
141      - leave ALLOW_AUTODIFF_TAMC undefined in code_oad/AUTODIFF_OPTIONS.h
142      - do not use ECCO_CPPOPTIONS.h anymore for TAF & OpenAD Adjoint tests.
143    o autodiff:
144      - Start to include explicitly AUTODIFF_OPTIONS.h, COST_OPTIONS.h,
145        and CTRL_OPTIONS.h in src files (to enable to skip the ECCO_CPPOPTIONS.h)
146        For now, only in pkgs used in verification/hs94.1x64x5.
147      - Replace ALLOW_AUTODIFF_TAMC by ALLOW_AUTODIFF (except for tape/storage
148        which are specific to TAF/TAMC).
149      - Replace ALLOW_AUTODIFF_OPENAD by ALLOW_OPENAD:
150        since ALLOW_OPENAD is defined in PACKAGES_CONFIG.h (any time pkg/openad
151        is compiled), this simplifies/reduces which *_OPTIONS.h file to include.
152      - OpenAD: change Makefile to generate the appropriate AD_CONFIG.h when
153        building mitgcmuv_ad (make adAll).
154    o pkg/ecco:
155      - cost_gencost_seaicev4.F:
156         reformulate proxy cost as function of sst and local param SEAICE_freeze
157         change cost names from siv4-[sst,vol] to siv4-[deconc,exconc]
158      - add stop statement if old names siv4-[sst,vol] are used
159      - add snapshots + cost reports for atmospheric longwave
160      - remove factor 0.1 in front of wtau[u,v]
161      - replace never used flag ALLOW_TMI_COST_CONTRIBUTION with
162         ALLOW_TMI_SST_COST_CONTRIBUTION
163    o pkg/atm_phys:
164      - add some diagnostics for Short-wave and for convection S/R.
165    o pkg/seaice/seaice_growth:
166      - fix a bug in the lateral melt parameterization for SEAICE_ITD
167        in seaice_growth; tempFrz needs to be computed inside the i/j-loop
168      - rearrange loop order for better vector code in the same code block
169      - rewrite the floeDiameter formula to have fewer divisions
170      -  (miraculously) none of this changes the results of seaice_itd
171    o pkg/smooth:
172      - move param smooth2Ddiffnbt to pkg/ecco
173    o pkg/salt_plume:
174      - salt_plume_frac.F:
175         clean up local param names
176         reformulate (1-frac) to frac; original 1-frac was based on swfrac code
177    o pkg/rw:
178      - add RS version of S/R READ_MFLDS_LEV.
179    o pkg/streamice:
180      - fix the restart test by writing/reading pickup_streamice files.
181    o pkg/seaice:
182      - refine checks for jfnk-related parameters
183      - comment out if statement with SEAICEuseIMEX parameter as long as there
184        is no IMEX code to avoid confusion and surprises
185    
186    checkpoint64u (2014/03/07)
187    o verification/MLAdjust:
188      - rename secondary test suffix:
189         1.leith  -> A4FlxF  + switch to flux-form & add side-drag
190         0.leithD -> AhFlxF  + switch to flux-form
191         0.smag   -> AhVrDv  (use Vorticity-Div. visc form) + add side-drag
192         0.leith  -> AhStTn  (use Strain-Tension visc form) + add side-drag
193    o pkg/mom_vecinv:
194      - remove unused arguments from S/R MOM_VI_HDISSIP & MOM_HDISSIP (as it used
195        to be before mom_calc_visc.F)
196      - skip the call to MOM_CALC_TENSION & MOM_CALC_STRAIN if not needed.
197      - add 2nd copy of vort3 & strain that knows about lateral BC (free/no slip):
198        this is simpler for the adjoint and for diagnostics.
199    o model/src + pkg/momentum:
200      - add input files for  2-D additional Western and Southern cell-edge wall
201         (e.g., to add "thin-wall" where it is =1).
202      - fix sideDrag option for thin-walls with Non-Lin Free-Surf
203        using 2nd hFacZ that is computed from initial (fix domain) hFac
204      - known limitations of thin wall implementation: not yet coded for sigma
205        coords; not working with CD-scheme neither.
206    o pkg/seaice:
207      - rename recently introduced parameters from (wrong name) AB to
208        BDF (backward difference time discretisation)
209      - retire runtime parameters SEAICEuseAB2, SEAICE_abEps
210    o tools/adjoint_options:
211      - remove setting of "OPENAD=true" (now set by command line "genmake2 -oad")
212    
213    checkpoint64t (2014/02/01)
214    o pkg/ecco
215      - add compile flag ALLOW_GENCOST_TIMEVARY_WEIGHT in ECCO_OPTIONS.h and
216        runtime logical flag gencost_timevaryweight to read daily sea-ice sigma
217      - replace hard-coded record number and period which only work for monthly
218        with read-in runtime param that works for other periods (month,day,year)
219    o pkg/thsice
220      - corrected store directive fixes thsice adjoint gradient checks
221    o genmake2 & testreport:
222      - add genmake2 option "-oad" to generate a Makefile for OpenAD built and
223        in this case, use tools/adjoint_options/adjoint_oad as default AD optfile.
224        Update testreport accordingly. No need to set "export OPENAD=true"
225        in adjoint_options/adjoint_oad anymore (will be removed later).
226    o pkg/shelfice:
227      - put T & S shelfice forcing into model surfaceForcing_T,_S (for now,
228        only if SHELFICEboundaryLayer=F); Change model/src/external_forcing.F
229        so that surface forcing applies to k=kSurf if using pkg/shelfice.
230    o pkg/ctrl, pkg/grdchk, pkg/ecco:
231      - Changes to make GENARR more modular (i.e. invisible if not used)
232    o model/src/temp_integrate.F and salt_integrate.F
233      - re-include store directives that were removed on Dec 27th.
234    o model/src/external_forcing_surf.F
235      - add storage directives for EmPmR and PmEpR to avoid recomputation of
236        seaice_model in the adjoint that is problematic when seaice_model is
237        turned off in the adjoint. The resolved issue dated back to July when
238        EXTERNAL_FORCING_SURF call was moved.
239        Update global_ocean.cs32x15/*/output_adm.seaice_dynmix.txt accordingly.
240    o pkg/exf/exf_check.F
241      - fix a small bug again (originally found by Wentao Liu, now found again)
242      - streamline error output
243    o pkg/streamice and aim_v23:
244      - replace a few "_EXCH_XY_RL (" with "_EXCH_XY_RL(", so that
245        Apple's /usr/bin/cpp knows what to do:
246        Apple LLVM version 5.0 (clang-500.2.79) (based on LLVM 3.3svn)
247        Target: x86_64-apple-darwin13.0.0
248    
249    checkpoint64s (2014/01/05)
250    o tools/adjoint_options:
251      - switch to fastopt.net TAF server (instead of default fastopt.de) for
252        AD optfiles adjoint_diva & adjoint_f95 (similar to adjoint_default).
253    o model/src:
254      - remove some unnecessary TAF storage directives in forward_step.F and
255        in dynamics.F (note: not always removed by TAF, e.g., double storage
256        of kappaRU,kappaRV in former version of dynamics.F).
257    o model/src & pkg/ptracers:
258      - call directly GAD_IMPLICIT_R & IMPLDIFF + DWNSLP_APPLY from temp_integrate.F
259        salt_integrate.F and ptracers_integrate.F (instead of from thermodynamics.F)
260        and remove ptracers_dwnslp_apply.F & ptracers_implicit.F
261      - call MATRIX_STORE_TENDENCY_EXP for each tracer (in ptracers_integrate.F)
262      - add fZon & fMer as output argument of S/R GAD_CALC_RHS.
263      - update TAF AD-output of experiments global_ocean.90x40x15 (13 for AD-grad).
264    o useSingleCpuInput separates single-CPU input from single-CPU output;
265        for now only implemented for in exf_interp_read.F
266    o verification/advect_xy:
267      - fix missing EXCH call in local version of ini_salt.F and update output.
268    o momentum diagnostics:
269      - fix which deltaT is used in Total-Tendency diagnostics.
270      - fix typo in diagnostics for momentum tendency from AB.
271    o pkg/seaice/seaice_lsr.F: fix an initialisation bug for the
272        SEAICE_VECTORIZE_LSR_ZEBRA option that lead to NaNs on a NEC-SX8
273    
274    checkpoint64r (2013/12/08)
275    o verification/*/results:
276      - Update reference output of experiments that were passing with just 13 digits
277         (make it easier to detect future changes in results)
278    o model/src & pkg/ptracers:
279      - move calls to GAD_ADVECTION (Multi-Dim advection) from thermodynamics.F to
280        inside temp_integrate.F and salt_integrate.F and from ptracers_advection.F
281        to inside ptracers_integrate.F ; remove ptracers_advection.F
282    o coupling interface pkgs:
283        [atm_compon_interf, ocn_compon_interf & atm_ocn_coupler]
284      - change the config check to test the agreement of Ocean Depth
285        with ATM land/sea mask (instead of ATM orography);
286      - send to coupler the number of coupler time-steps to do for this run:
287        this allows to check for consistency and don't need anymore to be
288        specified in parameter file "data";
289      in coupler:
290      - check consistency of RunOff map versus Ocean Depth and ATM land/sea mask.
291      - improve report to log-file of config setting (pass log-file unit to few S/R)
292    o pkg/compon_communic:
293      - add coupling send/receive for non-tiled integer vector;
294      - add S/R to check and stop if any proc has an error (similar to
295        eesupp/src/stop_if_error.F but single thread and across Comm_World).
296    o pkg/exch2:
297      - in exch2*_get_rx[1,2]: use new list "W2_tileIndex" to replace search
298        through list of all tiles my proc owns.
299    o model/src:
300      - AUTODIFF only: in calc_adv_flow.F, recompute rTransKp (instead of copying
301        from rTrans) to simplify dependencies (no need to store rTrans anymore in
302        calling S/R); this affects AD results at machine truncation level:
303        update AD-output (TAF) of experiments: 1D_ocean_ice_column,
304        bottom_ctrl_5x5 & obcs_ctrl (12 digits for AD grad, same FWD grad).
305    o tools/build_options:
306      - simplify Warnings options (-ieee & -devel cases) in linux_amd64_gfortran
307    o coupling interface pkgs:
308        [compon_communic, atm_compon_interf & ocn_compon_interf]
309      - move declaration of local array "ibuf" out of header file "CPLR_SIG.h"
310        to each S/R that needs it; remove un-used variables.
311      - change component tile registration (cpl_register.F in both compon_interf
312        and mitcomponent_tile_register.F) to pass the full list of tiles
313        information (including bi,bj) in 1 vector (instead of in a bi,bj matrix).
314      - with pkg/exch2: adopt the same convention used for I/O to define mapping
315        towards coupler global array (unless W2_useE2ioLayOut=F):
316         a) can now use different tiling between atm & ocn comp.
317         b) no needs to modify the run-Off map when changing tiling (was needed
318            even if using the same tiling between atm & ocn).
319         c) will allow to run with blank-tiles in 1 component (e.g., for ocean
320            full land tiles); not yet tested.
321      - check for valid mapping from comp. tile to coupler global array
322      - improve report of tile registration results to log file.
323    o pkg/exch2:
324      - in eesupp/src/eeboot.F: move call to W2_EEBOOT before Coupler
325        tile-registration (CPL_REGISTER);
326      - activate (un-comment) definition and setting of "W2_tileIndex" list to
327        store the local bi,bj indices of each tile;
328      - also print bi,bj in local report to log file;
329      - fix pkg/debug/debug_cs_corner_uv.F for the case nSy > 1 (left from
330        Jun 2009 modif of pkg/exch2).
331    o testing on baudelaire:
332      - run 2 tests at a time: no significant slow down (since enough cpu) and
333        get the full set of test done earlier
334      - switch the ifort test to "-devel" ; run the OpenAD test everyday.
335    o model/src/thermodynamics.F and routines called from it:
336      - pkg/gmredi: gmredi_residual_flow.F (replacing gmredi_calc_uvflow.F &
337        gmredi_calc_wflow.F) to update eulerian velocity (input) into residual
338        velocity (outp) by adding bolus velocity.
339      - model/src: calc_adv_flow.F (replacing calc_common_factors.F) to compute
340        mass transport from velocity + lateral grid cell area
341      - rename calc_gt.F to temp_integrate.F (includes call to TIMESTEP_TRACER)
342      - rename calc_gs.F to salt_integrate.F (includes call to TIMESTEP_TRACER)
343     in thermodynamics.F
344      - remove k from thermodynamics.F and move it to temp_integrate.F
345        salt_integrate.F and ptracers_integrate.F (now done inside the tracer
346        loop).
347      - compute locally (in thermodynamics.F) 3-D velocity field that is used to
348        advect tracers; pass it as argument to GAD_ADVECTION, GAD_SOM_ADVECT,
349        PTRACERS_ADVECTION, TEMP_INTEGRATE, SALT_INTEGRATE, PTRACERS_INTEGRATE,
350        GAD_IMPLICIT_R and PTRACERS_IMPLICIT
351      - update AD-output (TAF & OAD) of experiments: 1D_ocean_ice_column,
352        global_ocean.90x40x15, tutorial_global_oce_biogeo and
353        tutorial_tracer_adjsens (+ TLM output).
354    o tools/OAD_support and (verification/*/) code_oad:
355      - OAD_support/cb2mGetModules.csh: add PACKAGES_CONFIG.h in header file to
356        module conversion ; remove unneeded CPP_EEOPTIONS.h.
357      - code_oad/CPP_OPTIONS.h: remove PACKAGES_CONFIG.h and use a more standard
358        version (closer to model/inc/CPP_OPTIONS.h).
359    o model/src:
360      - remove parameter "useOldFreezing" from PARAMS.h and push it to the
361        retired list of parameters (routine FREEZE has been replace by surface
362        freezing (10.yrs ago) and by pkg/frazil (interior freezing).
363    o pkg/gmredi:
364      - add option (GM_CALC_TRANSP_FROM_VEL) to compute transport directly from
365        velocity (same scheme but affects machine truncation) for GM_AdvForm.
366      - update output of FWD experiments: front_relax.bvp,
367        global_ocean.90x40x15.dwnslp, global_ocean.cs32x15 and ideal_2D_oce.
368    
369    checkpoint64q (2013/11/17)
370    o verification:
371      - generate new output on baudelaire (gfortran, -ieee) for OpenAD experiments
372        tutorial_global_oce_biogeo and global_ocean.90x40x15.
373      - generate new output (growth & melt) for seaice_itd experiment after
374        updating the input pickup_seaice files (previously wrong).
375    o pkg/cost:
376      - define a "final cost function" for each tile, and use GLOBAL_SUM_TILE_RL
377        (instead of _GLOBAL_SUM_RL) to get the final cost from all procs & threads:
378        o this fixes global-sum value if multi-threads (since GLOBAL_SUM_RL
379          cannot be applied to var in common block).
380        o allows to get results independent of tile-per-proc setting (if using
381          slower GLOBAL_SUM_SEND_RECV option).
382      - update accordingly: seaice_cost_final.F, shelfice_cost_final.F,
383        thsice_cost_final.F and ecco_cost_final.F (this one affects lab_sea
384        forward gradients: update output).
385      - update */code_oad/externalDummies.F by adding dummy GLOBAL_SUM_TILE_RL
386        S/R and, for most exp., also comment out GLOBAL_SUM_R8.
387    o pkg/mom_common:
388      - move to pkg/mom_common and model/src (previously in tutorial_deep_convection
389        code) 2nd version of isotropic 3-D Smagorinsky code interface: strain and
390        viscosity are locally declared in dynmics.F and pass as argument to CALC_GW;
391        ensure that all field value that are used are set.
392    o tutorial_deep_convection (smag3d):
393      - add missing scaling in mom_calc_smag_3d.F;
394      - set smag3D_coeff in input.smag3d such that results do not change.
395    o pkg/dic:
396      - change dic_cost.F to compute cost on each tile first and then apply
397        GLOBAL_SUM_TILE_RL: this affects forward gradient of AD experiments
398        tutorial_dic_adjoffline & tutorial_global_oce_biogeo; update output.
399      - remove kLev argument and use GLOBAL_SUM_TILE_RL in tracer_meanarea.
400    o eesupp/src & pkg/mdsio:
401      - remove gather/scatter_vector.F (from eesupp) and mdsio_read/writevector.F
402        (from pkg/mdsio) since they are no longer used for tape IO.
403      - move simple C subroutine "setdir.c" from pkg/compon_communic to eesupp/src
404        (+ keep a copy in pkg/atm_ocn_coupler).
405    o verification/isomip:
406      - split domain in 8 squared tiles (instead of just 2) for FWD, AD & OAD tests.
407    o tools/build_options:
408      - optfile linux_amd64_ifort11, fast (no ieee) case:
409        to get a working restart for all experiments, add "-fp-model source"
410        to FOPTIM (also remove "-opt-streaming-stores auto" <- this is the default).
411    
412    checkpoint64p (2013/10/20)
413    o pkg/autodiff:
414      - adread_adwrite.F: when type and length do not match ALLOW_AUTODIFF_WHTAPEIO
415        criteria, return to simple (default) tape IO format.
416    o pkg/mdsio (+ eesupp/src):
417      - rewrite/simplify tape-IO S/R (new S/R MDS_READ/WRITE_TAPE replace
418        previous MDSREAD/WRITEVECTOR) with 2 array argument from each type (R4/R8);
419      - fix globalFile and singleCpuIO options using simpler global mapping.
420      - new pairs of scatter/gather vector S/R (one for each type, generated from
421        template) corresponding to simpler global mapping.
422      - adread_write.F: switch to new S/R (but leave old calls commented) and write
423        to globalFile when parameter globalFiles is set to True.
424      - switch on useSingleCpuIO in AD experiments: global_ocean.90x40x15 & isomip.
425    o pkg/autodiff:
426      - adread_adwrite.F: add a hack for RS arrays (when RS=real*4);
427        with ALLOW_AUTODIFF_WHTAPEIO defined, since corresponding (real*4) is
428        missing, just add a STOP if array type do not match.
429    o pkg/exf:
430      - to allow to use seaice-fraction from pkg/exf in other pkgs than pkg/seaice:
431         rename CPP option EXF_ALLOW_SEAICE_RELAX to EXF_SEAICE_FRACTION
432         and rename array obsSIce to exf_iceFraction.
433    o tutorial_deep_convection:
434      - add 1rst version of isotropic 3-D Smagorinsky code (from Louis-Philippe),
435        for now all in this exp. code dir.
436      - add secondary test using Smag-3D viscosity (keep very low backgroud visc for
437        testing) and flux-limter advection scheme for Temp. (no explicit diffusion).
438    o eesupp/src:
439      - added SINGLE_DISK_IO option because reading of parameter files on
440        very large number of processors did not work with existing set-up
441    
442    checkpoint64o (2013/09/25)
443    o pkg/atm_phys & atm_compon_interf:
444      - allows for coupling of gray-atmosphere (atm_phys) with ocean.
445    o tools/build_options:
446      - switch from "-fPIC" to "-mcmodel=medium" in optfiles: linux_amd64_gfortran
447        & linux_amd64_ifort11 and in linux_amd64_g77 & linux_amd64_open64 also
448        remove CPP setting (was identical to genmake2 default).
449    o pkg/gmredi & model/src: Some updating and work done on the residual model.
450      - created new file model/src/calc_eddy_stress.F to calculate the eddy stress.
451      - fixed up the calculation of the eddy stress and how it is added to the
452        external forcing via taueddy_external_forcing.F
453      - at the moment, it is very experimental and only works with the variable eddy
454        diffusivity calculated in gmredi_k3d.F
455    o pkg/seaice/seaice_check.F: add a check to catch the case of specifying
456        lw/swfluxfile instead of lw/swdownfile in data.exf together with pkg/seaice
457    o testreport (& tools/do_tst_2+2):
458      - for MPI test, set default COMMAND to 'mpirun -v -np TR_NPROC ./{executable}'
459    o tools/build_options: linux_amd64_gfortran & linux_amd64_ifort11:
460      - remove CPP='cpp -traditional -P' (this is genmake2 default)
461      - add switch (for big setups) to use 'medium' memory-model (but leave it
462        commented out for now). Note: needed with FC 19 to compile big setups.
463    o pkg/atm_compon_interf:
464      - regroup per field origin (model & pkgs) the coupling storage routines
465         (which accumalate in time each coupling field)
466      - move bi,bj loops inside atm_store_my_data.F and store also wind-stress;
467        update accordingly + simplify aim_do_physics.F
468    
469    checkpoint64n (2013/08/26)
470    o pkg/bbl:
471      - update formulation to reduce dispersion of tracer properties in bbl
472      - replaced horizontal and vertical transport parameters with velocities
473      - changes results for verification/global_with_exf.yearly
474    o verification/halfpipe_streamice:
475      - change to matrix construction; update both Fwd & AD output.
476    o verification/tutorial_tracer_adjsens:
477      - OpenAD test: switch to vector-invariant momentum since fluxform with
478        rStar causes problems with OpenAD; update output.
479    o tools:
480      - genmake2: define a common prefix for all temp-file names ; move them
481        to local /tmp disk (but would be easy to move them back);
482      - xmakedepend: apply the same switch for temp-files.
483    o pkg/offline:
484      - changes for use with rStar (NLFS): assume that we continue to provide
485        UVELMASS/hFacW_ini & VVELMASS/hFacS_ini (hFacWi,S_ini as written in grid
486        output files) and apply r* scaling at each time-step (function of the time
487        varying Eta field); use normal pickup files (needed for restart with NLFS).
488    o adjoint with OpenAD:
489      - move OpenAD-specific files from verification/OpenAD/code_oad_all to a new
490        package openad.  This package has to be compiled for all runs with OpenAD
491        instead of specifying code_oad_all as a modification directory.
492      - link the fortran templates from tools/OAD_support to the build directory
493        for preprocessing to avoid conflicts between different setups compiled
494        simultaneously and simplify cleanup.
495    o pkg/exf:
496      - in exf_getforcing.F: comment out most of the EXCH calls (fields used by
497        main model or other pkgs are exchanged in EXF_MAPFIELDS).
498    o model/src:
499      - do_stagger_fields_exchanges.F: skip EXCH calls when using pkg/offline
500        (similar to do_fields_blocking_exchanges.F).
501    o tools/genmake2:
502      - remove TAF output src code just before calling staf (when not doing a fresh
503        built, will stop if things go wrong with staf).
504      - fix target "adobj" (left from TAF version-2 transition)
505    o pkg/diagnostics:
506      - add a parameter to track the status of pkg/diagnostics activation;
507        this replace/extend the use of logical param "settingDiags" (to check
508        when adding diag to the list) to also check any DIAGNOSTICS_[]FILL* call.
509        New S/R to print error message and stop when pkgStatus is not right.
510      - to try: add a warning when "data.diagnostics" exist but useDiagnostics=F.
511    
512    checkpoint64m (2013/08/13)
513    o model/inc:
514      - move FCORI_MACROS.h from PARAMS(_MACROS).h to GRID_MACROS.h (left from
515        8 yrs ago modif when Coriolis arrays were moved from PARAMS.h to GRID.h)
516    o pkg/kpp & aim_v23:
517      - only call DIAGNOSTICS_FILL when useDiagnostics=TRUE.
518    o pkg/seaice:
519      - restore (last time on 2011/12/24) ability to compile pkg/seaice with
520        undefined pkg/exf ALLOW_ATM_TEMP or ALLOW_RUNOFF CPP-options.
521      - only call DIAGNOSTICS_FILL when useDiagnostics=TRUE.
522    o eesupp/src:
523      - fix check for overlap-size argument (myOLn.GT.MAX_OLY_EXCH)
524        in exch1_rx[_ad].template (thanks to Francois Lefeuvre report).
525    o switch to TAF version-2:
526      - add flow directives to "freeze" naming convention for ad-routines that
527        are used in I/O routines of adjoint state and associated common blocks
528        that are used in adcommon.h (backward compatible with version-1)
529      - update all ad-optfiles (in tools/adjoint_options + few local to some
530        verification exp) to switch to latest TAF version (currently 2.5.5);
531        merge "*_mpi" adoptfiles into the corresponding non-mpi (but commented
532        out except for diva).
533      - the major change with TAF version-2 is that both the differentiated
534        routines and the forward routines (new) are returned as part of the TAF
535        output source code. Update genmake2 accordingly.
536      - new output for AD experiment tutorial_global_oce_biogeo (better AD gradient
537        with version-2 when compared to TLM or FWD gradient); other experiments
538        output show minor changes (machine truncation level); update the few AD &
539        TLM output with 12 matching digits only (some prior to version-2 switch).
540    
541    checkpoint64l (2013/08/05)
542    o model/src:
543      - in dynamics.F, skip the call to CALC_VISCOSITY if momViscosity=F
544      - main_do_loop.F: no longer includes additional (AUTODIFF) header files
545        when using TAF but only if using OpenAD.
546    o pkg/mom_common+fluxform+vecinv:
547      - always set horiz. viscosity arrays to background value before calling
548        MOM_CALC_VISC (in MOM_FLUXFORM & MOM_VECINV) and call S/R MOM_CALC_VISC
549        only when using variable horiz. viscosity (useVariableVisc=T);
550      - simplify mom_vecinv.F (only 1 block for momViscosity).
551    o pkg/mom_common: variable horiz. viscosity in NH code
552      - move horiz-viscosity 3-D arrays viscAh_W & viscA4_W (used in calc_gw.F)
553        from model/inc/NH_VARS.h to pkg/mom_common/MOM_VISC.h
554      - store in common block (in MOM_VISC.h) logical parameters: useHarmonicVisc,
555        useBiharmonicVisc & useVariableVisc.
556      - fix old bug (already in 1rst implementation of variable horizontal viscosity
557        in calc_gw.F, version 1.27, 2006/06/20):
558        horizontal bi-harmonic viscosity in gW was missing when wiscA4W=0
559        even if variable bi-harmonic viscosity (e.g., viscA4Grid) was non-zero.
560      - change background horiz viscosity in vertical momentum (gW) to always be
561        viscAhW,viscA4W (instead of switching to viscAhD, viscA4D when using
562        any type of variable viscosity, e.g., viscAh/4Grid)
563      - change default value of viscAhW,viscA4W to viscAhD,viscA4D (instead of
564        viscAh,viscA4) which default to viscAh,viscA4 :  this avoid missing
565        horiz. viscosity in W eq when just setting viscAhD/Z,viscA4D/Z (since
566        default viscAh,viscA4 is zero).
567    o model/src:
568      - extend length of drC & recip_drC from Nr to Nr+1.
569    o Divided Adjoint (DIVA) with MPI:
570      - genmake2: do not create local ./mpi_headers dir when no file to copy into.
571      - remove option ALLOW_DIVIDED_ADJOINT_MPI (replaced by ALLOW_DIVIDED_ADJOINT
572        and ALLOW_USE_MPI) from model/src code and from ECCO_CPPOPTIONS.h.
573    
574    checkpoint64k (2013/07/23)
575    o tools/OAD_support:
576      - avoid the need for file "oadtempflile" in insertTemplateDir.bash
577        and remove it from genmake2.
578    o tools/build_options:
579      - remove MPI_HEADER_FILES_INC setting (no longer used) and comment out
580        MPI_HEADER_FILES list (let genmake2 find the missing headers)
581    o verification/halfpipe_streamice:
582      - change to driving stress formulation; update both Fwd & AD output.
583    o tools/genmake2 and Divided Adjoint with MPI:
584      - remove default setting of MPIINCLUDEDIR from $MPIHOME (always been broken);
585      - only create local ./mpi_headers dir if using MPI and MPIINCLUDEDIR is set;
586      - add new variable (LOCAL_MPI_HEADERS, replace MPI_HEADER_FILES_INC) in
587        Makefile, which is set by genmake2, and check which mpi-headers are needed.
588        Note: need to update adjoint_options/adjoint_diva_mpi accordingly.
589      - update target "CLEAN" (to also remove ./mpi_headers/ dir).
590    o testreport:
591      - changes for Divided Adjoint Run: when file "run_ADM_DIVA" is present,
592        perform additional runs (number of additional runs is "add_DIVA_runs" taken
593        from file run_ADM_DIVA ; should match "nchklev_3" in file "code_ad/tamc.h").
594    o verification/lab_sea (AD test):
595      - change to test Divided Adjoint Run in this set-up (both standard AD test
596        and 2 secondary AD test: noseaice + noseaicedyn); drop the evp AD test.
597    o pkg atm_ & ocn_compon_interf:
598      - remove cpl_earlyExpImpCall=F option (was mainly a hack added for the old
599        staggerTimeStep implementation) and disable (retired) corresponding
600        parameter.
601    o pkg/offline:
602      - comment out unused field-array: ICEM, ConvectCount, hflx[01], icem[01];
603      - add S/R OFFLINE_CHECK to print offline parameter summary
604        and stop if loading a file that is not used;
605      - enable to calculate GMRedi tensor, KPP mixing and convective index
606        when the corresponding file(s) is/are not specified (but pkg is used).
607      - comment out resetting of monitorFreq (to endTime) since it still useful
608        for monitoring CFL numbers and checking offline fields.
609    o OpenAD:
610      - do not define OAD_DEBUG (in tools/adjoint_options/adjoint_oad) to get
611        smaller standard output) and generate new (smaller) output (on baudelaire
612        using gfortran with -ieee) for exp. tutorial_tracer_adjsens
613    o model/src:
614      - call EXTERNAL_FORCING_SURF outside bi,bj loops (in do_oceanic_phys.F),
615        (where external_forcing_adjust was called) and change list of arguments;
616      - merge external_forcing_adjust.F into external_forcing_surf.F
617      - put surface relaxation of SST & SSS in new S/R (forcing_surf_relax.F)
618        which also contains balancing surface relaxation (ALLOW_BALANCE_RELAX,
619        previously in file "balance_relax.F", now removed); remove corresponding
620        arrays in FFIELDS.h.
621      - EXTERNAL_FORCING_SURF is now called when using pkg/offline; implement
622        a hack for getting back surfaceForcingS (loaded from file) when using
623        ALLOW_OLD_VIRTUALFLUX (pkg/dic, in DIC_OPTIONS.h) in offline set-up.
624      - update output of AD test experiment global_ocean.cs32x15.seaice_dynmix
625        (was getting only 11 digits for AD-grad, due to different truncation
626         error in AD code).
627    
628    checkpoint64j (2013/07/04)
629    o pkg/offline:
630      - to enable the use of other features with pkg offline (e.g., obcs),
631        also call S/R DO_OCEANIC_PHYS in offline run - more modifs to come.
632      - comment out "allowFreezing" (now active) in 2 offline testing exp.
633    o pkg/exf ALLOW_RUNOFTEMP
634      - fix sign and make compatible with temp_EvPrRn .NE. UNSET_RL
635      - ahdded RUNOFTEMP test to verification/global_ocean.cs32x15/input.seaice
636      - changes verification/global_ocean.cs32x15/results/output.seaice.txt
637    o pkg/atm_phys:
638      - allows to add some damping on uVel,vVel (strength only function of k).
639    o verification, ad-tests:
640      - reduce length of the simulation for AD test: global_ocean.cs32x15.seaice,
641        global_ocean_ebm and offline_exf_seaice.thsice.
642    o verification/halfpipe_streamice:
643      - found a bug in s/r pkg/streamice/streamice_advect_thickness which caused
644        flux input boundary conditions to be ignored; a fix for this bug changed
645        verification results for forward test.
646      - add adjoint test.
647    o pkg/ptracers:
648      - allow to restart without SOM pickup (resetting SOM to zero).
649    o pkg/gmredi:
650      - New parameterisation for the calculation of K and (GM_PsiX,GM_PsiY) added.
651      - It uses mixing length theory and suppression by steering level effects to
652        calculate a diffusivity used in the Redi tensor (see Bates et al., submitted
653        to JPO, for more details).
654      - It also uses the diffusivity to calculate an eddy induced streamfunction
655        based on a PV closure (rather than a buoyancy closure as in GM).
656      - New files added to pkg/gmredi:
657        gmredi_k3d.F calculates the diffusivity for the Redi tensor and the eddy
658          induced overturning streamfunction (called from gmredi_calc_tensor)
659        gmredi_calc_eigs.F calculates the eigenvalues and eigenvectors required
660          for use in gmredi_k3d
661        gmredi_calc_urms.F calculates the the rms eddy velocity used to calculate
662          the eddy diffusivity
663    
664    checkpoint64i (2013/06/18)
665    o pkg/cheapaml:
666      - take src files from MITgcm_contrib/verification_other/offline_cheapaml/code
667        that enable the use of seaice (pkg/thsice thermo & pkg/seaice dynamics)
668        with pkg/cheapaml.
669    o utils/python: add subpackage for cubed sphere function, first example is
670        simple cs.pcol to plot 2D fields on a map
671    o pkg/streamice:
672      - This is a new package in MITgcm, which solves dynamic equations for ice
673         sheets and ice streams
674      - At the moment it is independent of atmosphere/ocean dynamics, or any
675        other physical packages in MITgcm, even ShelfIce (although it is anticipat-
676        ed that this will change)
677      - There is a new verification exercise that tests it, halfpipe_streamice,
678        evolves a 40x80 km ice stream/ice shelf (at coarse resolution) in a
679        rectangular embayment
680      - halfpipe_streamice is forward-only for now, will have TAF test soon
681      - for questions, email dgoldber@mit.edu
682    o pkg/thsice:
683      - fix filling of snow-precip diagnostic (SIsnwPrc) (left from the removing
684        of snowPrc from common bloc, on May 2nd, thsice_step_fwd.F revision 1.40);
685      - remove diagnostics 'SI_FrcFx' ( now identical to 'SI_Fract' with new
686         call sequence: ice-Thermo(thsice),ice-Dyn,ice-Advect );
687      - allow precip from pkg/cheapaml to make snow over seaice.
688    o pkg/cfc:
689      - move in separated header file (CFC_ATMOS.h) time-serie arrays of Atmos CFC
690      - remove atmos CFC 2-D arrays from common bloc (now local variables)
691      - change some hard-coded constant to run time parameter for reading and
692        and interpolating atmospheric CFC ; keep same default as previously.
693      - more flexible reading of Atmos CFC (number of records no longer hard-coded)
694      - put arguments in standard order: myTime, myIter, myThid
695      - use standard S/R GET_PERIODIC_INTERVAL for time interpolation of
696        atmospheric CFC ; fix for the case myIter < PTRACERS_iter0.
697      - fix calculation of surf tendencys for partial-cell and/or Non-Lin Free-Surf
698      - new routine to print summary of CFC params and check for consistency.
699    o pkg/seaice: add uice/vice to the parameter list of s/r seaice_advdiff,
700      similar to thsice_advdiff.
701      Note that for the B-grid case the routine parameters uc/vc are overwritten.
702    o pkg/cfc:
703      - change time interpolation for atmospheric CFC-11 (now same as for CFC-12);
704        update output (CFC-11) of experiment cfc_example and tutorial_cfc_offline.
705      - fix interpolation of atmphspheric CFC between Sorthern and Northern
706        hemisphere value.
707    o pkg/seaice:
708      - allow to use seaice dynamics without pkg/exf (e.g., using pkg/cheapaml)
709    o pkg/seaice: add Adams-Bashforth2 time discretization for ice dynamics;
710                  so far only for JFNK-solver, turn on with SEAICEuseAB2 = .TRUE.
711      - requires an additional time level that is stored in the pickup
712      - you can start with AB2 from a pickup without this time level with
713        pickupStrictlyMatch = .false.
714    
715    checkpoint64h (2013/05/26)
716    o pkg/cheapaml:
717      - replace one ()**.5 with SQRT + use temp var "cdu = tau/Du" (coare3_flux);
718        affect machine truncation (but exp cheapAML_box still pass with 13 digits).
719      - consistent treatment of uWind,vWind location: assume everywhere in
720        pkg/cheapaml that they are on C-grid (@ uVel,vVel location)
721        (Note: was already the case for Tair,Qair advection);
722        add option (INCONSISTENT_WIND_LOCATION) to recover old results.
723      - compute diabatic forcing only in the interior (excluding overlap regions)
724      - fill in array "Qsw" (for short-wave heating);
725      - add diagnostic for precip ; fill-in diagnostics for cheapAML state vars
726        before any update (consistent with MITgcm state var diagnostics);
727      - cheapaml_fields_load.F & cheapaml_init_varia.F : only fill outer edges if
728        non periodic ; + adjusted for uWind,vWind (C-grid).
729    o pkg/seaice:
730      - remove dependence of pkg/seaice versus pkg/exf (file: pkg/pkg_depend) and
731        add explicitly pkg/exf in experiments that currently use pkg/seaice.
732      - allows to compile pkg/seaice without pkg/exf.
733    o tools/OAD_support:
734      - use a local copy (ourRWCPinBd) to ensure index ourRWCP stays within bounds
735        of array "ourStepOf" in function rvNextAction (revolve.F90).
736    o pkg/aim_compon_interf renamed to pkg/atm_compon_interf
737      - change pkg name (to be used with other atmospheric physics pkg)
738        but by-pass CVS when making the new pkg so that we keep the CVS history.
739    o pkg/offline:
740      - call OFFLINE_FIELDS_LOAD from pkg/offline/offline_init_varia.F
741        (previously called from pkg/dic_surfforcing_init.F)
742    o model/src:
743      - re-order sequence of calls within packages_init_variables.F, using
744        standard order, except for:
745         DIAGNOSTICS_INIT_VARIA and OFFLINE_INIT_VARIA (called @ the top),
746         CTRL_MAP_INI and OBCS_INIT_VARIABLES (called @ the bottom)
747    o new pkg: atm_phys
748      - add entry point and source code (previously in contrib
749          verification_other/atm_gray/code_gray/) for new pkg "atm_phys"
750        (atmospheric physics pkg from P. O'Gorman and T. Schneider, JCl, 2008).
751      - re-order sequence of calls within packages_readparms.F,
752         packages_init_fixed.F and packages_write_pickup.F
753        (but skip packages_init_variables.F because of TAF issues).
754      - update contrib/*/atm_gray/ experiment.
755    o pkg/seaice (ITD code):
756      - simplify and fix the writing of pickup-files for ITD case
757    o pkg/seaice (ITD code):
758      - introduce floe size dependent lateral melt for ITD case;
759      - cleaning (avoid division by zero, change to f77 syntax, remove tabs)
760      - update seaice_itd experiment main output.
761    o pkg/thsice:
762      - remove snowPrc from common block THSICE_FLUX, in THSICE_VARS.h and
763        declared it locally (without bi,bj) in thsice_main.F & aim_do_physics.F;
764        changed accordingly pkg/atm2d.
765    
766    checkpoint64g (2013/05/01)
767    o pkg/exf ALLOW_RUNOFTEMP
768      - if defined,  river and glacier runoff temperature can be read-in from
769        runoftempfile; runoftempfile needs to have same format as runofffile
770    o pkg/thsice (& pkg/bulk_force):
771      - In case Energy-Reference-Level (ERL) is used (temp_EvPrRn=0), account
772        for energy content of Precip + RunOff & Evap (like with pkg/exf).
773      - change computation domain to always be the interior (without overlap).
774      - fix bug (wrong overlap) when using EXF and stressReduction > 0.
775    o verification/tutorial_global_oce_biogeo:
776      - add preliminary OpenAD setup (still has problems)
777    o pkg/seaice:
778      - turn some parameters for choosing the convergence criterion of
779        the inexact Newton method (JFNK) into runtime parameters for convenience
780      - clean up seaice_calc_viscosities.F: remove/retire two options for
781        SEAICetaZmethod (1,2), introduce area weighting for method 3; this changes
782        the results of lab_sea/input because a division has been replaced by
783        a multiplication with the reciprocal (sumNorm)
784      - modify offline_exf_seaice/input.dyn_jfnk/data.seaice to improve
785        convergence of solver (changes results, of course), and to test some
786        new features
787    o model/src:
788      - remove unused (since Aug 2006) S/R SET_WRITE_GLOBAL_PICKUP and its call.
789      - remove unused forcing field "dQdT" and associated parameter "dQdTFile".
790      - move forcing adjustment (balancing surface forcing) in specific S/R
791        where might also be applied exchanges (if needed) to forcing arrays.
792    o pkg/shelfice:
793      - allow to specify the Ice-Shelf mass per unit area (instead of
794        shelficeLoadAnomaly) and do the conversion from one to the other
795      - move loading from file of shelficeLoadAnomaly from SHELFICE_INIT_VARIA
796        to SHELFICE_INIT_FIXED: (a) avoid some TAF recompution issues and
797        (b) will be loaded in time (before calling INI_PRESSURE) in case it is
798        needed in phi0surf for initial pressure calculation when useDynP_inEos_Zc
799      - update isomip experiment forward output (get machine truncation error
800        from conversion shelficeLoadAnomaly -> shelficeMass -> shelficeLoadAnomaly)
801    o verification/offline_exf_seaice:
802      revise data.seaice in input.thermo and input_ad and update results accordingly
803        HO = 0.2, SEAICE_areaLossFormula = 2,
804        SEAICE_growMeltByConv = .TRUE.,
805        SEAICE_doOpenWaterMelt = .TRUE.,
806      Improve consistency with input.thsice and fix the spurious 500m ice corners
807    o verification/global_ocean.cs32x15:
808      - set Energy Reference Level to liq. water @ 0 degC: temp_EvPrRn=0.,
809        in icedyn (thsice+seaice-dyn) test and update output.
810    o verification/offline_exf_seaice:
811      - adjust list of tested variables (with testreport) and update
812        standard test output with better slection of monitored fields.
813    o pkg/cd_code:
814      - swtich off Adams-Bashforth on the 1rst iteration. Update output of
815        experiment lab_sea.hb87
816    o tools/genmake2:
817      - change default makedepend from the system default to tools/xmakedepend:
818        When no makedepend is specified, select tools/xmakedepend it the test pass,
819        otherwise select the system default (if exist and pass the test) or
820        try to build cyrus-makedepend ; stop if none of the 3 works.
821    o pkg/exf & pkg/thsice:
822      - In case Energy-Reference-Level (ERL) is used (temp_EvPrRn=0), account
823        for energy content of Precip + RunOff & Evap. Assumes:
824       1) Rain has same temp as Air.
825       2) Snow has no heat capacity (consistent with seaice & thsice pkgs)
826       3) Run-Off comes at the temp of surface water (with same Cp)
827       4) Evap over ocean is released to the Atmos @ surf-temp (=SST); should be
828        put directly into Latent Heat flux & should use water-vapor heat capacity.
829       5) Evap over snow/seaice (pkg/thsice) assumes constant Lf+Lv (consistent
830        with snow having no Cp) => water vapor is released to Atmos @ 0^oC (=ERL).
831    o pkg/seaice: simplify the use of CPP flags in JFNK-related files
832        (compile when SEAICE_ALLOW_JFNK is defined)
833    o pkg/thsice:
834      - fix oceanic flux diagnostics & timeave (left from new sequence of calls
835        implementation): move THSICE_AVE call after the advection (called directly
836        from thsice_do_advect.F).
837    o verification/global_ocean.90x40x15 and OpenAD:
838      New experiment for OpenAD is identical to the one in input_ad except that
839        multiDimAdvection=.FALSE.,
840      There is still an issue with this.
841    o pkg/thsice:
842      - account for ice velocity (ocean relative velocity) in turbulent heat flux
843        at the base of the ice; update output of global_ocean.cs32x15 (icedyn)
844        and offline_exf_seaice (main test).
845    
846    checkpoint64f (2013/03/31)
847    o verification/OpenAD:
848      - new (smaller, without OAD_DEBUG) output_oadm.txt generated using gfortran.
849    o verification/isomip, pkg/shelfice and OpenAD:
850      - add OpenAD setup to this exp and make shelfice package work with OpenAD
851    o verification/tutorial_global_oce_biogeo:
852      - update AD and TLM output after turning off ALLOW_FE (in DIC_OPTIONS.h)
853    o verification/offline_exf_seaice:
854      - replace adjoint experiment (now similar to fwd input.thermo/ setup).
855    o verification/tutorial_tracer_adjsens, pkg/ptracers and OpenAD:
856      - add OpenAD setup to this exp and make ptracers package work with OpenAD
857    o pkg/seaice/seaice_evp.F:
858       mask the asymmetric contribution of the ice-ocean stress (when
859       the turningAngle is non-zero) over open water to avoid stripes
860       in the EVP-solutions after many EVP-substeps. This does not change
861       the verification experiment (because turningAngle=0 in that experiment),
862       but will affect other EVP solutions with turningAngle.ne.0
863    o verification, AD & TLM output:
864      - new TAF version 2.3.10 (previously 2.3.8) add more parenthesis in multiple
865        additions and multiplications which affect results at machine truncation
866        level. Update few AD output (1D_ocean_ice_column, bottom_ctrl_5x5,
867        lab_sea.noseaicedyn & offline_exf_seaice) and TLM output
868        (1D_ocean_ice_column & tutorial_tracer_adjsens.som81) which had only 12
869        digits of matching.
870    o pkg/seaice:
871       modify lsr-algorithm so that it vectorizes AND converges by using a
872       "zebra" method: split vector loop into two with step size 2; this
873       solves a general convergence problem for the JFNK solver on a vector
874       computer. It has the potential to even improve convergence for
875       non-vector machines, but it does change the results so it is turned
876       off by default. To turn on define CPP-flags SEAICE_VECTORIZE_LSR and
877       SEAICE_VECTORIZE_LSR_ZEBRA in SEAICE_OPTIONS.h
878    
879    checkpoint64e (2013/03/05)
880    o pkg/ecco and several verification experiments:
881       Remove special versions of the_model_main.F, the_main_loop.F, forward_step.F
882       from ecco package, and revert to unified routine in model/src/
883       Adjust verification experiments accordingly, especially gloal_oce_llc90
884       Should conclude long-standing work by Gael to reconsile the_main_loop with
885       ECCO and will enable OpenAD's revolve loop in ECCO setup.
886    o pkg/generic_advdiff:
887      - implement compressible flow method for multi-dim advection (similar to
888        gad_som_advect.F); add new option "GAD_MULTIDIM_COMPRESSIBLE" (since
889        TAF generates many recomputations) to use it; no yet coded with implicit
890        vertical advection.
891      - change experiment advect_cs (new output) and advect_xy (same output)
892        to test compressible flow multi-dim advection.
893    o pkg/generic_advdiff:
894      - fix SOM advection for unusual cases (linear Free-Surf in r*, other
895        cases where linear Free-Surf is not @ k=1, e.g., useShelfIce)
896    o pkg/seaice:
897      - fix bug in the no-slip implementation in seaice_calc_strainrates.F, this
898        bug affects two verification experiments (lab_sea and lab_sea.hb87),
899        recover old (wrong) results by setting noSlipFac = 2. in
900        seaice_calc_strainrates.F;
901      - add another averaging method for etaZ (etaZmethod=3), a mix of 2 and 0
902      - add runtime parameter SEAICE_JFNKepsilon for that finite difference
903        gradient in the Jacobian times vector operation (s/r seaice_jacvec)
904      - fix line search in seaice_jfnk.F (s/r seaice_jfnk_update)
905    o pkg/seaice: reorganize seaice_lsr.F to be able to reuse more code:
906      - new subroutines seaice_lsr_tridiagu/v
907      - introduce loop bounds i/jmin/max to be able to use a restricted
908        additive Schwarz method, but not used for now.
909      - rename SEAICE_CALC_LSR_COEFFS into SEAICE_LSR_CALC_COEFFS
910      - use new subroutines seaice_lsr_tridiagu/v in s/r seaice_preconditioner
911    o OpenAD support
912       Reorganize S/R call for overall time-stepping loop to facilitate
913       OpenAD revolve loop replacement
914       (new S/R main_do_loop.F)
915    o model/src:
916      - add 3-D array 3rd dimension to argument list of S/R ADAMS_BASHFORTH2/3;
917      - pkg/cheapaml: remove local S/R ADAMS2d and use instead standard S/R
918        ADAMS_BASHFORTH2.
919    o pkg/cheapaml:
920      - add new parameter (default=F, same as before) to disable full domain
921        (including land) periodicity in X & Y dir.
922      - new S/R CHEAPAML_COPY_EDGES to copy relaxation field into edges of
923        prognostics field ; merge the 2 S/R cycle_2d_tracer and timestep_2d_tracer
924        into single S/R CHEAPAML_TIMESTEP.
925    
926    checkpoint64d (2013/02/17)
927    o pkg/monitor (angular momentum):
928      - do not add Eta contribution to the total AM if using rigid-lid;
929      - correct for Adams-Bashforth in zonal-wind part (instead of in AM_eta).
930      - horizontal discretisation: compute Zonal wind contribution separately for
931        each component (instead of from cell centered averaged) and use the 4
932        grid-cell corner averaged value of Omega*(R*cos_Phi)^2 in AM_eta part.
933      - Check that AM is conserved with linear dynamics (momAdvection=F and linear
934        FreeSurf) if using vectorInvariant momentum.
935    o model/src (horizontal grid):
936      - move initialisation of all horizontal grid arrays to null value
937        from specific horizontal grid S/R to main S/R INI_GRID;
938      - add 2 new arrays to project model C-grid velocity on to zonal direction
939        (similar to AngleCosC & -AngleSinC but at U and V point location) and
940        compute them in S/R CALC_GRID_ANGLES.
941    o pkg/seaice: replace a hard coded parameter by a runtime parameter
942        SEAICE_JFNK_tolIter
943    o pkg/seaice: introduce a restricted additive Schwarz (RAS) method in
944        preconditioner for JFNK (run LSR into the overlaps as far as possible,
945        i.e OLx/y-2, but overwrite the solution in the overlaps)
946      - extend loop range in seaice_calc_viscosity
947      - add new parameters SEAICE_OLx/y (default = OLx/y-2)
948      - add flexible loop ranges to seaice_preconditioner, seaice_calc_lsr_coeffs
949      - slightly modify loops in tridiagonal solver lsr-preconditioner
950      - by default remove the extra exchange in seaice_preconditioner with a
951        replacement of an undocumented CPP flag by SEAICE_PRECOND_EXTRA_EXCHANGE
952      - modify offline_exf_seaice so that old results without RAS are reproduced
953        for output.dyn_jfnk.txt
954      in seaice_fgmres.F (unrelated to RAS)
955      - add a cpp-flag option for a re-ordered mapping (potentially more
956        efficient), but because this changes the results, turn it off by
957        default
958      - replace the save statement by local common blocks
959    o utils/matlab:
960      - fix tile-offset in rdmnc.m when output was produced using EXCH2.
961      - update cs_grid/bk_line scripts to use load_grid.m (in utils/matlab)
962        instead of local script "load_cs.m".
963    o pkg/seaice:
964      - fix a serious bug in seaice_fgmres.F, s/r seaice_scalprod, connected
965        to the scalarProductMetric and the unrolling. By chance this does not
966        change the verification experiment, because of the particular domain
967        decomposition
968    o pkg/diagnostics:
969      - change default missing_value from UNSET_RL to -999.
970    o pkg/layers: improve vectorization of layers_fluxcalc.F
971      - step 1: split loops, make TatU/V 2D arrays. This alone reduces the cpu
972        time spent in this routine by more than a factor of 3 on an NEC-SX8
973      - step 2: replace search algorithm by a bisection algorithm found in
974        Press et al. Numerical Recipes in Fortran. This algorithm can be
975        vectorized and finds the correct bin in approx. log2(Nlayers) steps.
976        For now, use this algorithm only for TARGET_NEC_SX defined.
977      - moved the search algorithm into a separate subroutine, that is kept
978        within the same file for automatic inlining.
979      - modified catching potential errors
980    o pkg/ecco:
981      - add compile switches ALLOW_SHALLOW_ALTIMETRY and ALLOW_HIGHLAT_ALTIMETRY.
982    o model/src, pkg/autodiff, pkg/ctrl, pkg/grdchk :
983      - modifications for ALLOW_GENTIM2D_CONTROL
984      -- forward_step.F, the_main_loop.F : pass options and arrays for adjoint tapes.
985      -- load_fields_driver.F : add call to CTRL_MAP_GENTIM2D( myTime, myIter, myThid )
986      -- add xx_gentim2d0/1 in ctrl_ad_check_lev1_dir.h checkpoint_lev1_directives.h etc
987      -- use ctrl_swapffields.F (new) instead of exf_SwapFFields.F in ctrl_get_gen.F
988    o model/src:
989      - account for moist thermodynamics in (dry) potential temperature equation;
990        update results of experiments: aim.5l_cs (x2), fizhi-cs (std + aqualev)
991        and cpl_aim+ocn.
992      - also switch to standard compiler (gfortran, was using ifort previously)
993        for fizhi-cs experiments reference output.
994    o pkg/ctrl:
995      - 1st step toward generic time-varying control variable (2D) via CPP option
996        ALLOW_GENTIM2D_CONTROL
997      - note new namelist ctrl_nml_genarr in data.ctrl
998    o verification/global_ocean.cs32x15:
999      - switch off OLD_THSICE_CALL_SEQUENCE (both forward and AD code) to use new
1000        thsice calling sequence and update "output.icedyn.txt" output file.
1001    o pkg/ptracers:
1002      - from Ryan A.: code to allow to restart a tracer at regular time interval
1003        specifying a reset frequency and a reset-phase (for each tracers).
1004    o pkg/thsice:
1005      - implement new sequence of calls for thsice+seaice:
1006          previously:   ice-Dyn,ice-Advect,ice-Thermo(thsice)
1007          new sequence: ice-Thermo(thsice),ice-Dyn,ice-Advect
1008      - allows (with temporary CPP option "#define OLD_THSICE_CALL_SEQUENCE"
1009        in CPP_OPTIONS.h) to recover old sequence;
1010      - update diagnostics for Intermediate State thsice diagnostics: now filled
1011        just before advection (instead of just after advection in old sequence);
1012      - update output of experiment offline_exf_seaice (standard test);
1013      - in global_ocean.cs32x15 exp., postpone output.icedyn.txt update
1014        by setting #define OLD_THSICE_CALL_SEQUENCE in CPP_OPTIONS.h
1015    o pkg/aim_v23:
1016      - use tiled array for aim_CO2 and surface wind speed for export to coupler;
1017      - use standard pkg/mdsio routines to read & write CO2 pickup file;
1018      - in-line S/R AIM_AIM2DYN_EXCHANGES in aim_do_physics.F;
1019      - Implement new sequence of calls for seaice advection (with thsice and
1020        seaice diffusion): do ice advection after ice-Thermodynamic (previously
1021        was done before); change aim_do_physics.F (split the bi,bj loops block);
1022      - use same CPP option (OLD_THSICE_CALL_SEQUENCE) to recover old sequence;
1023    o pkg/thsice:
1024      - add a missing EXCH of sIceLoad in thsice_main.F (ocean set-up) for the case
1025        where just seaice diffusion is used without seaice-dynamics.
1026    
1027    checkpoint64c (2013/01/18)
1028    o pkg/seaice:
1029      - add a parameter JFNKres_tFac that can replace JFNKres_t
1030        (= JFNKres_tFac*JFNKresidual before JFNK solver)
1031      - add a line search option to the JFNK solver
1032      - move update of u/vIce and computation of initial residual into a separate
1033        routine (same file); makes the code a little easier to read (?)
1034      - the line search requires computation of the residual and for some reason
1035        I cannot do the update of u/vIce at the beginning of the Newton loop
1036        without changing the results, so we move computation of the new residual
1037        also to the end of the Newton loop, even without the line search
1038    o pkg/mdsio:
1039      - write missing value (corresponding to undefined array value) to meta files;
1040        skip this if missing value is one (UNSET_RL would be a better value for the
1041        case of undefined missing value but it's current the default missing-value);
1042        Also update mdsio_read_meta.F (reading timeInterval & missing-value).
1043    o pkg/exf & thsice:
1044      - for diagnostics purpose, fill-up and update Qsw array (+ fill the
1045        diagnostics) even when SHORTWAVE_HEATING is #undef;
1046    o verification/cfc_example:
1047      - turn on pkg/layers with pkg/diagnostics (to test pkg/layers and to
1048        illustrate how to use it).
1049    o verification/offline_exf_seaice:
1050      in input: add SEAICErestoreUnderIce=.TRUE., and reduce size of forcing
1051        files to only one time-record.
1052      in input.thermo: narrow the 2 bands of low initial ice-concentration near
1053        N & S edges; switch on SEAICErestoreUnderIce=T; use pkg/diagnostics for
1054        snapshot output; same mcPheePiston value as in thsice with
1055        surf-current=0.2m/s.
1056      in input.thsice: similar set-up as in input.thermo (channel with same seaice
1057        initial conditions).
1058    o verification/cfc_example:
1059      - update file "data" with more standard choice (default rotationPeriod,
1060        exactConserv=T, reduce ivdc_kappa to 10, remove multiDimAdvection=F,
1061        set deltaTFreeSurf to deltaTtracer) and update the output.
1062    o pkg/layers:
1063      - fix bolus part so that it compiles with #undef GM_BOLUS_ADVEC;
1064      - ensure that "layers_bolus" is switched to False when useGMRedi=False.
1065    o verification/offline_exf_seaice:
1066      - set all {field}period to zero for constant-in-time forcing (not tested
1067        anywhere else).
1068    o verification/offline_exf_seaice:
1069      - dyn_lsr  : use pkg/seaice S/R (instead of pkg/thsice) to advect sea-ice;
1070      - dyn_jfnk : use pkg/thsice S/R (instead of pkg/seaice) to advect sea-ice.
1071    o model/src:
1072      - implement Finite-Volume method for (hydrostatic) presure gradient
1073        from S.-J. Lin (QJRMS 1997), for atmosphere using sigma-coordinate.
1074    o pkg/seaice: implement EVP* by Lemieux et al. (2012).
1075      - In order to be compatible with the default EVP code, this requires changing
1076        the EVP code around a little; and because any small change immediately
1077        breaks the lab_sea.hb87 verification experiment, the reference output is
1078        updated two times (each time the remaining aggrement was only 2 digits):
1079        - after replacing 1/dt by 1*recip_dt with a precomputed recip_dt
1080        - after replacing 1/(1+0.5*dt/tau) by a/(a+1), with a=2*tau/dt
1081        The adjoint test lab_sea.evp also needed to be updated.
1082      - Turn on EVP* by setting SEAICE_deltaTevp as before, and setting
1083        SEAICEuseEVPstar=.true.; for EVP* SEAICE_deltaTevp does not need to be
1084        a factor of SEAICE_deltaTdyn, and you can set the number of EVP steps
1085        explicitly with SEAICEnEVPstarSteps (thereby overriding the default of
1086        INT(SEAICE_deltaTdyn/SEAICE_deltaTevp)). Controlling EVP* is deliberately
1087        kept obscure, because I need to test it a little more.
1088    o pkg/cheapaml:
1089      - fix few incorrect type (_RL/_RS) in subroutine calls.
1090    o pkg/seaice:
1091      - new S/R SEAICE_MAP_RS2VEC (similar to SEAICE_MAP2VEC) to map _RS arrays
1092        to _RL vector; this fixes JFNK code when compiling with "-use_r4" option.
1093    o model/src:
1094      - add a warning if using select_rStar=2 with nonlinFreeSurf <> 4;
1095        change (in input_ad*/data) select_rStar from 2 to 1 for AD verification
1096        experiments global_ocean.cs32x15 & tutorial_tracer_adjsens (+ update output)
1097    o pkg/cheapaml:
1098      - replace "273.1 _d 0" by celsius2K in pkg/cheapaml/cheapaml.F and
1099        update output of experiment cheapAML_box.
1100      - store in CHEAPAML.h coeffs ssq[0:2] for saturation specific humidity,
1101        and set them only in one place (cheapaml_readparms.F).
1102      - replace "273.16 _d 0" by celsius2K & replace "3.14159 _d 0" by constant "PI"
1103      - remove re-setting of main-model parameter "celsius2K" (in cheapaml_readparms)
1104        and re-setting of cheapAML params "lath" & "p0" (in cheapaml_init_varia).
1105    o model/src/the_main_loop.F:
1106      - fix revision 129 : need both ALLOW_ECCO and ALLOW_ECCO_EVOLUTION.
1107    o pkg/seaice:
1108      - remove legacy branch code.
1109      - retire SEAICE_GROWTH_LEGACY and SEAICE_CAP_HEFF accordingly.
1110    o verification/*/code*/SEAICE_OPTIONS.h:
1111      - remove documentation for retired CPP flags (SEAICE_GROWTH_LEGACY,
1112        SEAICE_CAP_HEFF).
1113    o pkg/cheapaml:
1114      - use standard routine (S/R GET_PERIODIC_INTERVAL) to decide when it is time
1115        to load new forcing fields.
1116      - add missing "_d 0" where it's needed; + some editing (improve indentation).
1117      - remove switch to "-r8" compiler option (no longer needed) in verification
1118        cheapAML_box, keep same output (small trucation error differences).
1119    o verification/offline_exf_seaice:
1120      - add thermodynamics only test.
1121    o verification/cheapAML_box:
1122      - split the domain in 8 (2x4) tiles; add MPI and multi-threaded test;
1123        keep same output (same 14 digits for cg2d).
1124      - switch on "-r8" compiler option (some numerical values are missing
1125        the "_d 0") and update output (only 6 digits for cg2d were preserved).
1126    
1127    checkpoint64b (2012/12/24)
1128    o pkg/cheapaml:
1129      - remove un-used variables (Qnet,EmPmR) from pickup files.
1130      - store tendency of advected variables into cheapaml pickup file
1131        and fix the AB-2 restart.
1132    o verification/offline_exf_seaice and lab_sea adjoint:
1133      - switch to new code (#undef SEAICE_GROWTH_LEGACY).
1134      - switch to 4 time steps in offline, consistent with lab_sea.
1135      - match parameters from SEAICE_GROWTH_LEGACY branch in data.seaice.
1136      - update results after change of experiment seaice.
1137    o pkg/seaice:
1138      - remove option SEAICE_MULTICATEGORY; has been replaced with run-time
1139        parameter SEAICE_multDim. Issue a warning if SEAICE_MULTICATEGORY is
1140        still defined since SEAICE_multDim needs to be set to MULTDIM value (from
1141        SEAICE_SIZE.h) to recover previous #define SEAICE_MULTICATEGORY default.
1142    o model/src:
1143      - add run-time parameter to select CG2D solver minimum-residual solution
1144        (in case of a poor convergence).
1145    o pkg/seaice/seaice_lsr.F
1146      - move calculation of matrix coefficients into new
1147        S/R SEAICE_CALC_LSR_COEFFS; for now this routine remains in the same
1148        file; the main purpose of this change is to be able to reuse the code
1149        in S/R SEAICE_PRECONDITIONER
1150      - modify the computation of the residual so that the mass of sea-ice
1151        is not used twice; this simplifies the calculations, but since
1152        the residual is never used except when LSR_mixIniGuess.ge.4---and this is
1153        not tested in testreport---this does not affect the testreport results.
1154    o verification/seaice_obcs:
1155      - disable SEAICE_GROWTH_LEGACY; reset input files to match those of
1156        verification/lab_sea/input.salt_plume; changes results/output.txt*
1157    o model/src:
1158      - adapt quasi-hydrostatic formulation to work with p or p* coordinate.
1159    o pkg/seaice:
1160      - improve description of parameters in seaice_fgmres.F and start
1161        cleaning up the code
1162      - change name of SCALPROD to SEAICE_SCALPROD and modify meaning of
1163        second argument
1164      - add a metric based on grid cell area to SEAICE_SCALPROD; update
1165        results of offline_exf_seaice.dyn_jfnk
1166      - compute initial residual norm in seaice_jfnk based on SEAICE_SCALPROD
1167    o pkg/aim_v23:
1168      - fix an other bug in dissipation heating (grid-cell area was missing).
1169    o model/src + pkg/seaice:
1170      - add global (multi-tile) linear solver for pair of tri-diagonal system
1171        along X and Y lines, respectively for U and V component.
1172        Note: 1) MPI and cube-exchange not yet coded.
1173            2) probably not accurate for poorly conditioned / large size problem.
1174      - add option for SEAICE_LSR to use global (multi-tile) tri-diagonal solver;
1175        default: not compiled and not used.
1176    o pkg/seaice:
1177      - first attempt at a multi-threaded fgmres solver for the JFNK solver:
1178        introduce bi/bj loops and use global_sum_tile_rl instead of
1179        mpi_allreduce in seaice_fgmres.F
1180      - improve diagnostics output for fgmres solver (seaice_fgmres.F)
1181      - replace a few unnecessary goto statements by if-blocks  (seaice_fgmres.F)
1182      - add a verification experiment for JFNK in offline_exf_seaice
1183    o verification:
1184      - change (for now, only fwd test) offline_exf_seaice experiment:
1185        use a re-entrant channel with idealized coastline (trapezoidal shape)
1186        at southern boundary to explore seaice dynamics and thermodynamics
1187        with simple forcing. Main set-up has dynamics+thermo and SST relaxation;
1188        secondary test (input.thsice) use thermodynamics only with SST relaxation.
1189      - add seaice-dynamics only secondary test using LSR and pkg/thsice advection.
1190    o pkg/exf:
1191      - disable "sstExtrapol" when Nr=1
1192    o verification:
1193      - add new experiment "cheapAML_box" (simple 1 layer set-up from Bruno Deremble)
1194        to test pkg/cheapaml.
1195    o pkg/aim_v23 & pkg/shap_filt:
1196      - fix dissipation heating (erroneous gravity multiplication factor).
1197    o pkg/seaice:
1198      - remove unused field pressPre from jfnk solver
1199      - rename two subroutines in seaice_preconditioner.F
1200    o eesupp/src:
1201       - S/R MDSFINDUNIT avoids reserved unit numbers (scrUnit1, eeDataUnit ...)
1202    o pkg/seaice/seaice_preconditioner.F: fix preconditioner once again
1203       - remove wrong parts of the rhs and the lhs (were in there
1204         because I did not understand the concept of this preconditioner)
1205       - add an exchange between u- and v-sweep. This increases communication
1206         by a factor of two but improves the convergence of jfnk. Ideally,
1207         one would like the u- and v-sweep to be independent. So far within
1208         undocumented ifdefs
1209       - reorganize the extra computations for printing the residuals
1210    o tools/genmake2:
1211      - comment out the "mpif.h" include in NetCDF test programm (for MPI built)
1212        since it's not necessary (and was preventing to use MNC in some cases).
1213    
1214    checkpoint64a (2012/11/16)
1215    o pkg/autodiff:
1216      - improve pkg-internal logical parameter switch (inAd/inFwd mode) so that
1217        autodiff_readparms.F no longer depends on calling order (within
1218        packages_readparms.F) and no longer requires to include ${PKG}_PARMS.h):
1219        rename param turnFreeDriftInAdMode to SEAICEuseFREEDRIFTswitchInAd
1220        and change param SEAICEuseDYNAMICSinAdMode to SEAICEuseDYNAMICSswitchInAd.
1221    o pkg/obcs:
1222      - adding tidal velocity forcing capability to obcs
1223        for usage example, see verification/seaice_obcs/input.tides
1224    o pkg/seaice:
1225      - turn the LSR-relaxation parameters WFAU/V into runtime parameters
1226        SEAICE_LSRrelaxU/V
1227      - introduce runtime parameter SEAICEetaZmethod (=0 by default)
1228    o pkg/aim_v23:
1229      - implement heating from friction (bottom friction and stratospheric drag).
1230    o pkg/shap_filt:
1231      - fix diagnostic "SHAP_dKE" (was 2 time smaller); implement heating from
1232        dissipation but only for Shap_funct=2, active when addFrictionHeating=T.
1233    o model/src:
1234      - move AddMass common block from DYNVARS.h to FFIELDS.h; allow to read-in
1235        time-constant addMass field from file (addMassFile);
1236      - support for heating due to friction (and Kinetic Energy dissipation):
1237        add option, run-time switch and 3-D field array + support code ; each pkg
1238        or S/R can add heating contribution (if there is a sink of KE); the sum is
1239        accounted for as a Temperature tendency term (EXTERNAL_FORCING_T).
1240    o pkg/seaice:
1241      - complete merge of ITD code into seaice_growth.F
1242        from MITgcm_contrib/torge/itd/code/
1243        no verification so far, but Torge Martin tested
1244        "1-D test case and Beaufort set up;
1245        deliver okay results after 1 model year."
1246      - complete merge of SEAICE_SIZE.h into all relevant routines
1247      - move computation of eta at Z-points into calc_viscosities
1248        + introduce global field etaZ
1249        + add different methods for computing etaZ, for now the old
1250          method (simple averages of eta to Z-points) is hardwired
1251        + replace etaMeanZ by etaZ in seaice_lsr, seaice_calc_residual,
1252          seaice_preconditioner
1253      - simplify computations for SEAICE_ZETA_SMOOTHREG
1254      - seaice_preconditioner:
1255        + replace one remaining press by pressLoc (mistake)
1256        + adjust printing of residuals
1257      - improve I/O of diagnostics of JFNK in seaice_jfnk.F:
1258        + add (SEAICE.h) and rename some counters (initiliased in
1259          seaice_init_fixed.F)
1260        + add _BEGIN/END_MASTER (myThid)  around print statements
1261        + print total number of iterations and failures over SEAICE_monFreq
1262          interval to STDOUT
1263      - move control over output-messages by fgmres to seaice_jfnk to save
1264        some operations
1265      - move resetting initial guess for fgmres outside of seaice_fgmres_driver
1266        in order to make restarts with sol .ne. zero (fgmres with restarts)
1267        (seaice_jfnk.F, seaice_fgmres.F)
1268      - seaice_calc_l/rhs.F: replace maskW/S by maskInW/S; this fixes
1269        a serious convergence problem when open boundaries are involved
1270    o pkg/ggl90: fix computation of control volumes for the case of
1271      ALLOW_GGL90_HORIZDIFF (probably not used very often): move control volumes
1272      up half a grid cell from C-centered to W-centered (pointed out by C. Eden)
1273    o pkg/seaice: simplify seaice_evp by avoiding use of extra fields u/vIceC
1274    o pkg/autodiff
1275      - Add inAdMode switch for SEAICEuseDYNAMICS:
1276        SEAICEuseDYNAMICSinAdMode
1277        (extend logic in ADAUTODIFF_INADMODE_SET)
1278    o pkg/seaice
1279      - Step 1 of merging ice-thickness distribution (ITD) code from
1280        MITgcm_contrib/torge/itd/ (author: Torge Martin)
1281        The code implements concept laid out in Thorndike et al. (1975);
1282        code is enabled via CPP flag SEAICE_ITD
1283        nITD (in SEAICE_SIZE.h) defines number of ice thickness categories;
1284        code is not complete yet!!
1285      - SEAICE_SIZE.h now included in almost all seaice routines
1286    o verification (using seaice):
1287      - switch back seaice-dynamics (+ lower SOLV_MAX_ITERS) in ADM exp.
1288        global_ocean.cs32x15.seaice ; update results.
1289      - compile B-grid dynamics in FW test exp 1D_ocean_ice_column ;
1290      - compile C-grid dynamics with #define SEAICE_ALLOW_JFNK in FW test exp
1291        offline_exf_seaice (previously compiling B-grid).
1292    o pkg/exf:
1293      - fix some STOP conditions in exf_check.F (from Aug 28, modifs did not allow
1294        to specify neither just 1 comp of wind or wind-stress, nor no surface momentum
1295        forcing): just replace CPP option ALLOW_ATM_WIND with run-time param useAtmWind.
1296    o pkg/layers (adjust changes from Sept 19):
1297      - do snap-shot output and fill diagnostics from inside iLa loop (layers_calc.F)
1298        this allows to remove "layers_maxNum" dimension from all layers arrays.
1299    o pkg/layers (adjust changes from Sept 19):
1300      - remove ALLOW_LAYERS_OUTPUT ; fix snap-shot and time-ave output ;
1301      - snap-shot extended to all type of layers (not just the 1rst type);
1302      - remove layers variables when corresponding CPP option is undef.
1303    o pkg/layers:
1304      - rename pkg/layers variable and add new output (layer exist & un-weighted
1305        velocity in layer)
1306    o pkg/seaice:
1307      - simplify (?) ocean-drag coefficent computations by using
1308        the same routine in all three solvers (saves some code lines)
1309      - remove global fields DRAGA and DRAGS from C-grid code and
1310        declare them locally in lsr.F (the only place where they are
1311        still used)
1312      - update AD output of lab_sea.evp (very sensitive anyway).
1313    o pkg/seaice: add Jacobian-free Newton Krylov solver for ice dynamics
1314      (Lemieux et al. 2010, 2012). Turn on with the usual SEAICE_ALLOW_JFNK
1315      and SEAICEuseJFNK=.true. A few things to note:
1316      - involves a FGMRES, that is parallel but very inefficient,
1317        because of many scalar products (global sums) in the Gram-Schmidt
1318        orthogonalization method. Needs to be replaced. Original code
1319        from J.-F. Lemieux
1320      - preconditioner for FGMRES is a stripped down version of LSOR
1321      - SOLV_MAX_ITERS is now used for LSOR as a solver and as a
1322        preconditioner. For the preconditioner, the default is set to 10.
1323      - Jacobian times vector is computed with finite differences
1324      - marginally related to JFNK-solver: add a smooth regularization for
1325        zeta with tanh that will improve convergence (Lemieux and Tremblay,
1326        2009) for any implicit solver (not implemented for EVP because EVP
1327        does not need this regularization in the first place). Define
1328        SEAICE_ZETA_SMOOTHREG in SEAICE_OPTIONS.h to use.
1329    o eesupp/src:
1330      - check in genmake2 that intrinsic S/R flush is available.
1331      - add S/R to flush IO unit (if intrinsic S/R flush is available)
1332      - flush standard & error msg unit before MPI termination
1333      - if debugMode, flush IO unit after printing msg
1334    o pkg/ctrl:
1335      - ctrl_unpack.F, ALLOW_GENARR3D_CONTROL code: fix missing argument in call
1336        to ctrl_set_unpack_xyz.
1337    
1338    checkpoint64 (2012/10/09)
1339    o pkg/shelfice
1340      - in mom_fluxform.F, mom_vecinv.F:
1341        CALL SHELFICE_V_DRAG(bi,bj,k,vFld,KE,KappaRU,vF,myThid)
1342        Bug fix KappaRU -> KappaRV
1343        does not change verification/isomip but may change other setups
1344        (presumably constant KappaRU=KappaRV)
1345      - fix diagnostics SHIU/Vdrag (thanks to Tom Millgate)
1346    o pkg/obcs:
1347      - fixed some indexing bugs in obcs_seaice_sponge.F
1348      - added obcs relaxation subroutines for HSALT and HSNOW
1349      - changes verification/seaice_obcs/results/obcs_seaice_sponge.F
1350    o pkg/seaice:
1351      - add "multicategory" parameterization for snow in analogy to ice,
1352        default is off for now.
1353    o pkg/obcs:
1354      - added obcs_seaice_sponge.F for obcs relaxation of seaice variables;
1355        see verification/seaice_obcs/input.seaiceSponge for example application.
1356      - remove local commom bloc "OBCS_GLOBAL" in obcs_readparms.F and do all the OB
1357        index setting by master-thread. This fix multi-threads Pb in previous modifs.
1358    o pkg/layers :
1359      - add diagnostics to pkg/layers
1360      - move the meat of pkg/layers from layers_calc.F to layers_fluxcalc.F
1361        (from R.Tulloch). Layers_calc.F now calls layers_fluxcalc.F accordingly.
1362    o pkg/generic_advdiff/gad_implicit_r.F :
1363      - fix ADVr diagnostics in case of both implicit vertical advection and diffusion.
1364    o pkg/seaice/seaice_growth.F:
1365      - fix SItflux diagnostics in virtual salt flux + balanceEmpmr case.
1366    o pkg/obcs:
1367      - change default setting of OBCS_UVICE_OLD from defined to undef;
1368      - use new parameter OB_indexNone for null index value (instead of hard-coded 0)
1369        in all pkg/obcs code and in other pkgs; remove k loop in obcs_check_depths.F;
1370      - pass OB_indexNone as (new) argument to S/R CTRL_MASK_SET_[X,Y]Z;
1371      - change OB null index value (OB_indexNone) to -99 ; this fix the problem
1372        with Southern & Western OB at a tile edge (at least in a simple set-up).
1373    o pkg/obcs:
1374      - change settings of OB index in case OB coincides with tile edge (shared by
1375        2 tiles), so that common OB location is registered by both tiles (instead of
1376        only 1). However, for Southern and Western OB, index value = 0 is not
1377        recognized as valid OB index (=default null value) and needs to be fixed.
1378      - modify accordingly OBCS_BALANCE_FLOW and OBCS_MONITOR (avoid double counting)
1379      - new parameter "OB_indexNone" for null index value (for now, still zero)
1380        to replace hard-coded null index value of zero.
1381    o pkg/exch2:
1382      - improve W2_USE_E2_SAFEMODE (faster) and W2_E2_DEBUG_ON:
1383        always check buffer-size (but outside the loop); move checking for valid
1384        index from W2_USE_E2_SAFEMODE to W2_E2_DEBUG_ON; in W2_E2_DEBUG_ON,
1385        print each tile and point connection only if |W2_printMsg|>= 2 and 3.
1386    o pkg/ctrl (pack & unpack):
1387      - in ctrl_pack.F & ctrl_unpack.F, use the same local file-name variable
1388        (locally defined) for different variables (+ remove the variable-specific
1389        file name in CTRL_GENARR.h). For now, only implemented for GENARR2/3D_CONTROL
1390        (to be extended to other local file names in ctrl.h).
1391    o pkg/flt:
1392      - add a FLT_Iter0 option (similar to PTRACERS_Iter0).
1393    o pkg/mdsio:
1394      - fix missing STOP in mdsio_readvec_loc.F (case ioUnit=0) when file is missing
1395    o tools/genmake2:
1396      - add similar dependences for target EXE_AD & EXE_FTL as we have for EXECUTABLE
1397        (added by Alistair in version 1.51 for building without make depend);
1398      - remove Header files list (H_SRC_FILES) from the dependence of targets
1399         ad_input_code.f & ftl_input_code.f (not clear why it was added in the first
1400        place in version 1.23): this save going through staf when unrelated header
1401        file has been modified.
1402       Note: for an intermediate target (e.g., ad_input_code.f or adtaf) without
1403        "make depend" step, still need to do "make links" before "make adtaf".
1404    o eesupp/src (+ few pkg src files) & genmake2:
1405      - finish to remove ALWAYS_USE_MPI in source code that TAF does not see;
1406      - no longer set ALWAYS_USE_MPI in Makefile (was done by genmake2).
1407      - improve genmake2 checking for ALLOW_${PKG} in CPP_OPTIONS.h files (distinguish
1408         upper/lower case ; account for space between "#" and undef/define)
1409    o pkg/flt (with exch2):
1410      - cleaning: fix so that it compiles; move remaining MPI calls out of flt_exch2.F;
1411      - simplify threads synchronisation; fix (many issues) multi-threaded with MPI.
1412    
1413    checkpoint63s (2012/09/05)
1414    o pkg/ecco:
1415      - remove #ifdef ALLOW_SMOOTH_CORREL3D brackets.
1416      - add more relevant #ifdef ALLOW_SMOOTH ones.
1417      - sort out useAtmWind, useSMOOTH, ctrlSmoothCorrel2D.
1418    o pkg/ctrl:
1419      - CTRL_OPTIONS.h : document CPPs related to smoothing; ALLOW_SMOOTH_CORREL2D/3D,
1420        ALLOW_CTRL_SMOOTH, ALLOW_SMOOTH_CTRL2D, ALLOW_SMOOTH_CTRL3D.
1421      - ctrl.h : document run time params doInitXX, doMainPack, doMainUnpack, doPackDiag,
1422        doSinglePrecTapelev (audodiff param!), ctrlSmoothCorrel2D (new) and
1423        ctrlSmoothCorrel3D (new).
1424        The added ctrlSmoothCorrel2D/3D replace the old ALLOW_SMOOTH_CORREL2D/3D CPP.
1425      - ctrl_readparms.F : initialise ctrlSmoothCorrel2D/3D and read from namelist.
1426      - ctrl_init.F ctrl_pack.F ctrl_unpack.F : switch off ustress/vstress
1427        controls when useAtmWind, and vice versa.
1428      - ctrl_map_ini_ecco.F : UVEL0, VVEL0, edtaux, edtauy cannot be smoothed as tracers.
1429      - ctrl_get_gen.F : replace #ifdef ALLOW_SMOOTH_CORREL2D with
1430          #ifdef ALLOW_SMOOTH, IF ctrlSmoothCorrel2D, IF useSMOOTH.
1431      - ctrl_map_ini_gen.F : replace #ifdef ALLOW_SMOOTH_CORREL3D with
1432          #ifdef ALLOW_SMOOTH, IF ctrlSmoothCorrel3D, IF useSMOOTH.
1433      - ctrl_set_pack_xy[z].F, ctrl_set_unpack_xy[z].F:
1434        replace ALLOW_SMOOTH_CORREL2D/3D brackets with ctrlSmoothCorrel2D/3D.
1435    o pkg/smooth:
1436      - remove un-necessary includes.
1437      - remove ALLOW_SMOOTH*D and ALLOW_SMOOTH_CORREL*D brakets.
1438        Those CPP options were never defined, and not necessary.
1439    o model/src:
1440      - fix CPP brackets in ini_mixing.F (GM_background_K belongs to gmredi).
1441      - standard treatment of useSMOOTH.
1442    o pkg/autodiff:
1443      - add LOGICAL useGGL90inAdMode, useGGL90inFwdMode, useSALT_PLUMEinAdMode,
1444        useSALT_PLUMEInFwdMode allowing to switch off ggl90 and salt_plume adjoint.
1445    o pkg/exch2:
1446      - add "if usingMPI" where it was missing (in exch2_rx?_cube*.template)
1447        + start to remove ALWAYS_USE_MPI in source code that TAF does not see.
1448      - make new S/R W2_MAP_PROCS out of w2_eeboot.F to setup exch2 CommonFlag
1449        and tiles to process mapping.
1450      - re-arrange 3 header files (W2_EXCH2_PARAMS.h, _BUFFER.h & _TOPOLOGY.h)
1451        moving /EXCH2_FILLVAL_RX/ & /W2_EXCH2_COMMFLAG/ to W2_EXCH2_TOPOLOGY.h;
1452        rename "exch2_tProc" to "W2_tileProc" and move seting of e2FillValue_RX
1453        from w2_eeboot.F to w2_readparms.F.
1454    o eesupp/src:
1455      - set exchNeedsMemsync & exchUsesBarrier according to "usingMPI" (instead of
1456        ALWAYS_USE_MPI) + moved from ini_communication_patterns.F to eeset_parms.F;
1457        also move setting of exchCollectStatistics from exch_init.F to eeset_parms.F
1458      - in eedie.F and all_proc_die.F, always call MPI_FINALIZE when ALLOW_USE_MPI
1459        is defined (remove condition on usingMPI) to match cases where MPI_INIT
1460        has been called.
1461      - fix bug I put in previous modif of exch_sm_3d_rx.template (not much used);
1462      - change default (non-MPI) value of myPid (from 1 to 0) to match MPI settings
1463        (so that on 1 proc, get same myPid independently of usingMPI)
1464      - add a stop if multi-procs but usingMPI=F ; stop also if usingMPI=T and
1465        useCubedSphereExchange with EXCH-1 (safer).
1466      - add "if usingMPI" where it was missing (+ start to remove ALWAYS_USE_MPI).
1467    o pkg/ggl90:
1468      - fix bug in filling corner mask array "mskCor" (FILL_CS_CORNER_TR_RL call)
1469        used in ALLOW_GGL90_SMOOTH code.
1470    o pkg/flt:
1471      - fix typo in FLT_WITHOUT_Y_PERIODICITY (the effect was to ignore stopping
1472        floats at the Southern end of the domain).
1473    o eesupp/inc:
1474      - add a list of CPP-options which can be set by Makefile (DEF_IN_MAKEFILE.h);
1475        but not used (and not to be used) anywhere, just for documentation.
1476    o pkg/autodiff, exf, ptracers & seaice (AD & TL output):
1477      - comment out the very nasty "writeBinaryPrec = writeStatePrec" line, since:
1478        a) can damage previously written records in any other multi-record files.
1479        b) if needed, can easily do it cleanly, by calling S/R WRITE_REC_3D_RL/S.
1480    o tools/genmake2:
1481      - define variable MAKE within Makefile and use it in place of 'make';
1482      - update AD_CONFIG.h (if needed) before building any of the executable
1483        (forward, adjoint or tangent-lin); this involves a 2nd invocation of make;
1484        and add the usual #ifndef/#define AD_CONFIG_H in AD_CONFIG.h;
1485      - always print usual warning comment 'this file is automatically generated'
1486        from script convert_cpp_cmd2defines (+ remove this warning from genmake2).
1487    o pkg/cheapaml:
1488      - updated to correspond to the code used in accepted paper (Nico Wienders).
1489    o pkg/exf:
1490        added run time switch useAtmWind to replace ALLOW_ATM_WIND cpp switch.
1491        ALLOW_ATM_WIND now just sets the useAtmWind default (see exf_readparms.F)
1492        and force defines ALLOW_BULKFORMULAE (EXF_OPTIONS.h).
1493    o pkg/exf, autodiff, ctrl, ecco and seaice:
1494        remove ALLOW_ATM_WIND brackets, or replace them with useAtmWind ones.
1495    o pkg/ctrl, ecco:
1496        allow to compile both ALLOW_U/VSTRESS_CONTROL and ALLOW_U/VWIND_CONTROL.
1497        Depending on useAtmWind, one is inactive, and the other is active (see
1498        exf_getffields.F/exf_getsurfacefluxes.F).
1499    o tools/genmake2:
1500      - improve error msg when failing in 2nd test of check_for_broken_Ff
1501      - fix option '-makefile' short-name (-mf according to genmake2 -help)
1502      - source local config file "genmake_local" just after processing the genmake2
1503        command arguments (previously done before processing arg).
1504    o pkg/grdchk:
1505      - add a call to TURNOFF_MODEL_IO for Tangent-Linear run (in this case, call
1506        to this routine from cost_final has been dropped in g_cost_final)
1507      - improve printed information (more explicit msg, no longer using "print *,"
1508         fix fcpertminus printed value).
1509    o model/src:
1510      - move call to COST_INIT_VARIA out of packages_init_variables.F directly
1511        into initialise_varia.F (just after calling PACKAGES_INIT_VARIABLES):
1512        this prevents getting cost-funct reset in adinitialise_varia recomputations.
1513    o pkg/dic:
1514      - move initialisation of "freefe" array from from dic_biotic_forcing.F to
1515        fe_chem.F: this prevents TAF from dropping this initialisation in TLM code.
1516    o pkg/grdchk:
1517      - grdchk_main.F : added CALL GLOBAL_SUM_INT( ierr , myThid )
1518      - grdchk_getadxx.F etc. : omit I/O if ierr.EQ.0
1519    o pkg/autodiff/ctrl/grdchk :
1520      - attempt to sort out what works and what does not,
1521        with regard to I/O, and to warn/stop accordingly.
1522    o pkg/grdchk:
1523      - attempt to fix grdchk in the case of useSingleCpuIO.
1524      - "if ( myProcId .EQ. grdchkwhichproc .AND. ierr .EQ. 0 )"
1525       statements were moved from grdchk_main.F and into
1526       grdchk_getadxx.F grdchk_getxx.F grdchk_setxx.F.
1527      - a global sum is applied to record numbers icvrec/layer
1528       out of grdchk_loc so that they be passed to I/O routines.
1529    o pkg/smooth:
1530      - fix recomputation that appeared with nlfs : use smooth_recip_hFacC,
1531        smooth_hFacW, smooth_hFacS (copied at init_fixed) in 3d case.
1532    o verification/testreport:
1533      - add option '-tlm' for Tangent-Linear test (-adm,-oad,-tlm are all exclusive);
1534      - can also use compressed (gzip) reference output file;
1535      - change format (in pkg/grdchk) of TLM output (+ add forward gradient)
1536        to be easier to collect by testreport.
1537      - update existing TLM output (half out-of-date by more than 3 yrs).
1538      - report NETCDF & LAPACK settings (from genmake2) in output dir.
1539      - report run-time in each individual summary (previously only for AD test);
1540        for TLM test, add also TAF version.
1541      - add daily TLM test on (old) aces cluster + weekly test on baudelaire.
1542    
1543    checkpoint63r (2012/08/15)
1544    o tools/genmake2:
1545      - fix Makefile for target ftlall (+ update files to clean after make ftlall)
1546    o pkg/ecco/ecco_cost_final.F :
1547      - fix fc print statements (to stdout and costfunction0000) so
1548        that the printed value is always after the global sum.
1549    o pkg/seaice/seaice_dynsolver.F :
1550      - fix ice strength assymptote at SEAICE_area_max<1
1551        (no change for the standard case of SEAICE_area_max=1)
1552    o some cleaning:
1553      - pkg source files: ensure that all *.F files from each pkg included the
1554        corresponding ${PKG}_OPTIONS.h file (except stand-alone src file which
1555        only includes CPP_EEOPTIONS.h); fix S/R CTRL_SMOOTH ; update AD experiment
1556        code_ad/*.F src files; add new option-file in pkg/admtlm + corresponding
1557        includes;
1558      - model/src: add PACKAGES_CONFIG.h wherever ALLOW_AUTODIFF[_TAMC] is used.
1559      - ALLOW_DIFFKR_CONTROL: add a stop in S/R CTRL_CHECK in case ALLOW_3D_DIFFKR
1560        is undef; also define /DYNVARS_DIFFKR/ common block in DYNVARS.h when
1561        ALLOW_DIFFKR_CONTROL is defined, to allow to compile and reach this stop.
1562      - update option-file CPP_OPTIONS.h of all AD experiments:
1563        * no longer include PACKAGES_CONFIG.h ;
1564        * includes ECCO_CPPOPTIONS.h if PACKAGES_CONFIG.h has been included ;
1565        * def/undef ALLOW_3D_DIFFKR independently of ALLOW_DIFFKR_CONTROL (before
1566          including ECCO_CPPOPTIONS.h).
1567    o pkg/cost, pkg/ctrl, pkg/ecco option-file:
1568      - clean-up and split content of old pkg/ecco/ECCO_CPPOPTIONS.h file into
1569        separated pkg option-file (done according to old doc from ECCO_CPPOPTIONS.h,
1570        not necessary accurate).
1571      - add a template for option-file ECCO_CPPOPTIONS.h, mostly empty, in
1572        pkg/autodiff, i.e., the 1rst pkg to compile for adjoint built, with lines to
1573        deliberately break compilation (a remainder that it needs to be customized)
1574      - in pkg/ecco, includes ECCO_OPTIONS.h instead of COST_OPTIONS.h
1575      - rename COST_CPPOPTIONS.h to COST_OPTIONS.h
1576      - rename CTRL_CPPOPTIONS.h to CTRL_OPTIONS.h
1577    o tools/genamke2:
1578      - check for lapack.
1579    o pkg/cost and pkg/ecco : attempt to sort out some of the limiting intricacies.
1580      - pkg/cost.cost_final.F : allow for use of pkg/ecco and pkg/cost cost functions
1581        jointly. The exclusive ifdefs were removed, to add costs terms (when defined)
1582        from both packages.
1583      - the fc global sum in pkg/ecco/ecco_cost_final.F was removed accordingly.
1584      - for objf_atl we use either the pkg/ecco or the pkg/cost term depending on CPPs.
1585      - pkg/ecco and model/src : add CPP brackets around pkg/cost and pkg/ctrl includes
1586        of "CTRL_SIZE.h" "ctrl.h" "ctrl_dummy.h" "optim.h" / "cost.h" accordingly.
1587    o pkg/cost : add comments to explain special and/or untested setups.
1588    o pkg/exf:
1589      - use EXF_OPTIONS.h to set pkg/exf options except if done in ECCO_CPPOPTIONS.h
1590        (previously, ALLOW_AUTODIFF_TAMC was controling this switch).
1591    o verification/*/code_ad:
1592      mimimal cleaning of AD experiments ECCO_CPPOPTIONS.h option-file:
1593      - reccord when this file is included (define ECCO_CPPOPTIONS_H)
1594      - remove the most obvious obsolete features (e.g., #define ALLOW_COST not
1595        allowed since Oct 2003 in any option-file except in PACKAGES_CONFIG.h)
1596    o pkg/seaice :
1597      - added possibility to change ice strength/PRESS0 relationship to
1598        HEFF, according to the following run time parameters
1599        SEAICEpresPow0 :: HEFF exponent for ice strength below SEAICEpresH0 (integer, >0)
1600        SEAICEpresPow1 :: HEFF exponent for ice strength above SEAICEpresH0 (integer, >0)
1601        SEAICEpresH0   :: HEFF threshold for ice strength            (m)
1602    o pkg/ggl90 :
1603      - added run time flag mxlSurfFlag to include the code that ensure
1604        mixing between first and second level (previously included as a comment)
1605    o verification/1D_ocean_ice_column/input_ad/data.autodiff :
1606      - add test of newly added dumpAdByRec=T option where
1607        we write all records to one file per variable.
1608    o verification/global_ocean.cs32x15/code_ad/CPP_OPTIONS.h :
1609      - switch to #define ALLOW_BALANCE_RELAX and ALLOW_BALANCE_FLUXES
1610        to check that this code is ok with taf and compiles in adjoint.
1611    o pkg/autodiff :
1612      - added run time param dumpAdByRec : ad dump format switch.
1613        If true then write all records to one file per variable.
1614        Else write one file per record (remains the default).
1615      - revise seaice_ad_dump.F and exf_adjoint_snapshots_ad.F accordingly.
1616    o pkg/seaice:
1617     - Added SEAICEuseTILT run time switch : if set to
1618       false then omit the tilt term in seaice dynamics.
1619     - Fix free drift calculation.
1620    o pkg/shelfice:
1621      When initializing SHELFICEDragQuadratic, set default to be
1622      consistent with shiCdrag in case SHELFICEuseGammaFrict is used,
1623      but retain option to set it independently
1624      (inconsistenty spotted by Veronique Dansereau)
1625    o eesupp/inc:
1626      - in EEPARAMS.h, add real-type constant for some frequently used simple number
1627         (0,1,2,1/2), with name explicitly referring to RS/RL type.
1628    o model/src:
1629      - move balancing of relaxation terms to new S/R balance_relax.F.
1630    o pkg/autodiff:
1631      re-write active I/O high-level (control) S/R:
1632      - rename  S/R ACTIVE_READ/WRITE_RL to ACTIVE_READ/WRITE_3D_RL
1633      - add 1 more argument (useCurrentDir) to replace the "_LOC" 2nd set of S/R.
1634      - use standard pkg/mdsio I/O routines (MDS_READ/WRITE_SEC_XZ/YZ  and
1635        MDS_READ/WRITE_FIELD); change loops to multi-threads.
1636      - update and merge active_file_control_slice.flow into active_file_control.flow
1637      - update the calls in lower level S/R (active_file.F, active_file_g.F and
1638        active_file_ad.F) keeping the argument list and function unchanged.
1639      - also update lower-level "_LOC" version (call same S/R with "useCurrentDir
1640        =.TRUE.") and remove high-level (control) _loc version (not called anymore).
1641      - new low-level active I/O routines, one for each type (RL/RS), for active var
1642        of various (XY,XZ,YZ) shape and level number (arguments: arrShape, myNr);
1643        fix ctrl_init_wet.F & ecco_cost_weights.F by calling the new S/R with the
1644        right type.
1645    o autodiff and RS=real*4:
1646      - call the right type (_RS instead of _RL) of S/R in few output S/R (pkg/exf
1647        ad-monitor and snapshots); disable arrType='RS' in mdsio_gl*.F ;
1648      - change argument type of 3-D mask argument to _RS to match type in the call
1649        (in seaice_cost*.F, ctrl_*_gen.F and *ctrl_bound.F); to be continued.
1650    o pkg/thsice:
1651      - re-anable balanceEmPmR when useSEAICE=T with useThSIce=T.
1652      - option to correct ocean fresh-water flux for imbalance of Atmos+Land
1653        fresh-water flux: uniform correction or proportional to local precip.
1654    o pkg/ctrl:
1655      - new header file CTRL_SIZE.h for parameters maxCtrlArr2D, maxCtrlArr3D
1656      - redefine CPP option ALLOW_BOTTOMDRAG_CONTROL to
1657                            ALLOW_BOTTOMDRAG_CONTROL_NONGENERIC
1658      - verification/hs94.1x64x5/ tests ALLOW_GENARR{2D,3D}_CONTROL
1659    
1660    checkpoint63q (2012/07/30)
1661    o pkg/autodiff:
1662      note about monitor and snap-shot of ad-variables:
1663      a) need to apply ADEXCH before monitor or output of ad-vars to include
1664       overlap contributions (was done for adjDump but missing for monitor).
1665      b) since ADEXCH implies adding overlap values to interior array, machine
1666       truncation error is expected when adding an ADEXCH call in the middle of
1667       the time-stepping (although mathematically identical).
1668      modifs:
1669      - fix some incorrect type (RL/RS, UV/scalar) in ADEXCH calls and ad-vars
1670        declaration (adEddyPsiX,adEddyPsiY in adcommon.h).
1671      - add new run-time params (dumpAdVarExch & mon_AdVarExch) to select how  to
1672        apply ADEXCH before monitor or snap-shot of ad-variables:
1673           =0 : no ADEXCH ; =1 : do ADEXCH ; =2 : apply ADEXCH on a local copy.
1674      - implement new method (copy+adexch) for snap-shot and monitor of main model
1675        ad-vars (initially not used by default -> output unchanged).
1676      - change default (set to 2) to use new method and update few output_adm.txt
1677        with accurate ad-monitor (global_ocean.90x40x15, tutorial_global_oce_biogeo
1678        and both tutorial_tracer_adjsens tests).
1679      - switch 2 global_ocean.cs32x15 AD-tests to AB-2 (seaice_dynmix & thsice)
1680        and turn off momDissip_In_AB in the 2 other (needed for stable AB-3).
1681    o pkg/ctrl:
1682      enable the use of a variable number (maxCtrlArr2D, maxCtrlArr3D) of
1683      generic control variables via
1684      #define ALLOW_GENARR2D_CONTROL and/or #define ALLOW_GENARR3D_CONTROL
1685      Only required customization should be S/R ctrl_map_ini_genarr.F
1686      (routine in repository contains example)
1687    o pkg/exf:
1688      - fix and refine checking of surface-relaxation setting when using EXF
1689    o verification (adjoint exp):
1690      - reduce length of simulation by half for experiment global_ocean.cs32x15
1691        (std, seaice & seaice_dynmix) and exp tutorial_dic_adjoffline; update output.
1692    o pkg/mom_common (mom_u/v_bottomdrag), pkg/shelfice (shelfice_u/v_drag)
1693      - replace if statements KE.ne.0 with KE.gt.0 to avoid sqrt of negative numbers
1694        of KE that can occur with aggressive optimization
1695      + put quadratic bottom drag calculation in separated loops (only done if
1696        using bottomDragQuadratic)
1697    o model/src: CG2D_NSA
1698      - clean-up:  stop if cg2dNormaliseRHS=T and AUTODIFF
1699         and replace GLOBAL_SUM calls with GLOBAL_SUM_TILE.
1700      - in test-exp that uses CG2D_NSA (bottom_ctrl & tutorial_tracer_adjsens),
1701         change cg2d residual target to be expressed in Wunits (=> do not normalise
1702         RHS ; this fix global_max Pb with TAF); update output.
1703    o verification/tutorial_tracer_adjsens:
1704       improve parameter consistency (and get rid of warnings):
1705       - use deltaTFreeSurf=deltaTtracer (better with NonLin FreeSurf);
1706       - switch Temp Adv Scheme from 81 to 80 (no limiter since theta < 0 is physical)
1707       - use staggerTimeStep (for stability) in som81; use default rotation period.
1708    o pkg/exch2:
1709      - with empty facet: fix compact-format (W2_mapIO=1) definition (was previously
1710        reset to 0 = 1 long line in X)
1711    o pkg/mdsio:
1712      - fix reading of dimensions from meta file for large-size domain
1713    o model/src:
1714      - fix saltIsActiveTr setting for IdealGas eosType (eosType is 6 character long);
1715      - to refine CS-grid check, add logical flag "hasWetCSCorners": true if using
1716        Cubed-Sphere Exch with CS-corners inside the domain;
1717        make new S/R INI_GLOBAL_DOMAIN from code in ini_linear_phisurf.F to calculate
1718        globalArea and to set hasWetCSCorners.
1719      - add warning if usingCurvilinearGrid and momAdvection in flux-form (missing
1720        metric terms); stop if hasWetCSCorners=T and momAdvection in flux-form.
1721      - re-activate the stop if useCDscheme and hasWetCSCorners=T (previously if
1722        useCDscheme and useCubedSphereExchange).
1723    o pkg/seaice/seaice_growth.F :
1724      - compute the SEAICE_DISABLE_HEATCONSFIX term accordingly
1725        for the (.NOT.useRealFreshWaterFlux).OR.(nonlinFreeSurf.EQ.0)
1726        when the previous code was not correct.
1727      - in all cases diagnoze the boundary condition mismatch to SIaaflux
1728      - in the case of useRealFreshWaterFlux.AND.(nonlinFreeSurf.GT.0) add
1729        that term to QNET (essentially to set the melt/freeze water to 0degC).
1730        when SEAICEheatConsFix is true, so that the ocean+ice budget heat is closed.
1731    o verification/global_ocean.cs32x15/input.seaice :
1732      - add SEAICEheatConsFix in data.seaice, ensuring closed ocean+ice heat budget.
1733      - add diagnostics (commented out) for budget test using my matlab codes (gcmfaces).
1734      - update results (output.seaice.txt) accordingly.
1735    o verification/lab_sea/input/data.seaice :
1736      - remove SEAICEheatConsFix, which is now be tested
1737        in global_ocean.cs32x15. The presently coded fix
1738        is only consistent with real fresh water + nlfs.
1739      - update results (output.txt) accordingly.
1740    o pkg/salt_plume: added diagnotic for salt tendency (oceSPtnd).
1741    o AD_CONFIG.h file:
1742      - in genmake2: remove "#undef ALLOW_ECCO_OPTIMIZATION" from AD_CONFIG.h;
1743      - remove #include "AD_CONFIG.h" from all included OPTIONS files and
1744        add it explicitly in each fortran src file where it is needed.
1745        motivation: header file AD_CONFIG.h is generated/modified after "make depend"
1746        thus introducing potentially wrong dependency; therefore, better to include
1747        it only where it's really needed, and after any other included OPTIONS file
1748        (less tempting to bring conditional includes according to ALLOW_ADJOINT_RUN
1749        or ALLOW_TANGENTLINEAR_RUN).
1750    
1751    checkpoint63p (2012/07/06)
1752    o pkg/autodiff:
1753      - rename S/R INI_AUTODIFF to AUTODIFF_INIT_VARIA ;
1754      - create new header file "AUTODIFF_PARAMS.h" for pkg/autodiff parameters
1755        which are now read from new parameter file "data.autodiff" (inAdExact
1756        previously in "data", use{KPP/GMRedi/SEAICE}inAdMode previously in data.pkg)
1757      - add file "data.autodiff" in all verification/*/input_ad/ directories.
1758      - add run-time parameter to turn On/Off SEAICEuseFREEDRIFT in adjoint/forward
1759        mode (used in global_ocean.cs32x15.seaice_dynmix test exp.)
1760    o verification/tutorial_tracer_adjsens/
1761      - add extra sub-verification which uses "SOM" advection scheme
1762        (2nd Order-Moment Advection Scheme, Prather Limiter) with
1763          #define GAD_ALLOW_TS_SOM_ADV in GAD_OPTIONS.h
1764        and in data:
1765          multiDimAdvection=.TRUE.,
1766          tempAdvScheme=81,
1767          saltAdvScheme=81,
1768    o model/src:
1769      - introduce ALLOW_BALANCE_RELAX which allow the removal
1770       of the global mean of relaxation terms by setting
1771       balanceThetaClimRelax and balanceSaltClimRelax
1772      - disable balanceEmPmR and balanceQnet in the case when useSeaice.
1773       This case is now treated appropriately in seaice_growth.F
1774    o pkg/seaice:
1775      - do balanceEmPmR and balanceQnet based on the net fluxes
1776        (SItflux) that enter the ocean+ice system rather than QNET
1777        and EMPMR. Works best in real fresh water.
1778      - SIatmFW, SIatmQnet, and SItflux computations had to be moved
1779        out of the diagnotics bloc, and stored in global arrays.
1780    
1781    checkpoint63o (2012/06/29)
1782    o vertical mixing schemes:
1783      - remove unused S/R CALC_BUOYANCY (left from branch-atmos merging)
1784      - replace computation of density (in Function STATE1, opps_calc.F) by a call
1785        to S/R FIND_RHO_SCALAR
1786      - pass sigmaR to S/R PP81_CALC, MY82_CALC (but not yet used) and to GGL90_CALC
1787        and use it for N^2 calculation in ggl90_calc.F (save 2 density computations);
1788        affects output (vermix.ggl90) at truncation level.
1789    o testreport:
1790      - change adjustment of SIZE.h for mpi+mth testing: preserve enough tiles
1791        (nSx,nSy) for the number of threads (from eedata.mth)
1792    o model/src:
1793      - remove 2nd set of calls at the top of initialise_varia.F (Adjoint part)
1794        related to Non_Lin Free-Surf or Bottom-Control (but not longer necessary).
1795    o verification/tutorial_tracer_adjsens/
1796      - compile with ALLOW_CG2D_NSA
1797      - run with nonlinFreeSurf=3
1798      - update reference output_adm.txt
1799    o tools/genmake2:
1800      - add "-DHAVE_NETCDF" to the DEFINES list when NetCDF is available ;
1801        refine usePROFILES switching off (only when NetCDF is not available).
1802    o verification (atmospheric set-up):
1803      - change eosType='IDEALGAS' to eosType='IDEALG' to match variable declaration
1804    o pkg/profiles : refine profiles and files handling.
1805    o model/src and pkg/ecco : introduce run-time switch usePROFILES.
1806    o model/src/the_main_loop.F, forward_step.F and pkg/exf/EXF_OPTIONS.h :
1807      - changes to use model/src/the_main_loop.F rather than the ecco version
1808        in ecco type adjoint runs.
1809    o model/src:
1810      - move computation of recip of grid distance & area from INI_MASKS_ETC to INI_GRID
1811      - move setting of h0Fac[C,W,S] from INI_LINEAR_PHISURF to INI_MASKS_ETC
1812      - update_masks_etc.F: rename SMOOTH*_R4,R8 function to the corresponding type (RS,RL)
1813    o model/src:
1814      - fix S/R UPDATE_CG2D for ALLOW_DEPTH_CONTROL case (was empty before);
1815        update output of test experiment bottom_ctrl_5x5.
1816    o pkg/generic_advdiff:
1817      - implement vertical bi-harmonic diffusion (for now, only for T & S and
1818        only explicitly).
1819    o verification/bottom_ctrl_5x5/
1820      update reference output (results changed quite some time ago,
1821      not sure when; but new reference results look ok in terms of grdchk)
1822    o verification/1D_ocean_ice_column/
1823      For verification purposes, the exact adjoint rather than an approx.
1824      should be used (e.g., to comare against F.D. or TLM).
1825      removed autodiff_inadmode*_ad.F routines in code_ad/
1826      Update results/ accordingly.
1827    o pkg/cal:
1828      - change cal_getdate.F so that output date is function of input time only
1829        (less ambiguous, not mixed up with input iteration number).
1830      - fix calendarDumps for non-zero phase-lag (S/R CAL_TIME2DUMP).
1831    o pkg/diagnostics:
1832      - implement calendarDumps also for stats-diags
1833      - implement calendarDumps also for snap-shot output (negative freq)
1834      - for now, ignores calendarDumps if non-zero phase-lag.
1835    
1836    checkpoint63n (2012/06/04)
1837    o model/src:
1838      - recompute rSurfW & S to ensure consistent column thickness (needed for rStar)
1839        between Sum_k(hFac*drF) and rSurf-rLow, for now only when using pkg/shelfice;
1840      - use h0FacC, W & S to compute hFac_surfC, W & S in calc_surf_dr.F (more
1841        similar to calc_r_star.F); update results of experiment internal_wave and
1842        tutorial_global_oce_in_p (affected @ truncation level).
1843    o pkg/shelfice:
1844      - add parameterisation of advective-diffusive flux into the ice shelf
1845        according to Holland and Jenkins (1999), eq.22-33, as suggested by Jan De Ryd
1846      - simply eps3/3a computation
1847    o eesupp:
1848     - add new CPP option (DISCONNECTED_TILES) to disconnect tiles (no exchange
1849       between tiles, just fill-in edges assuming locally periodic subdomain) and
1850       add corresponding exchange subroutines (EXCH0);
1851     - new CG-solver version (_EX0) for disconnected-tiles special case.
1852    o model/src (CG-solvers):
1853     - modify Single-Reduction version (CG2D_SR) in case cg2dMaxIters is reached
1854       (similar final residual output and max-Iter number as with standard version);
1855     - allows to store and use lowest-residual solution (standard & _SR versions);
1856     - cleaning up (remove old, commented out code, LETS_MAKE_JAM ...).
1857     - by default, also compile CG2D_SR version (define ALLOW_SRCG in CPP_OPTIONS.h)
1858    o eesup/src:
1859     - global_vec_sum.F cleaning: add a BARRIER ; update comments ; remove ndef
1860       ALWAYS_USE_MPI (no longer needed after fixing usingMPI settings - March 2012)
1861    o pkg/salt_plume added to lab_sea/input_ad.noseaicedyn
1862    
1863    checkpoint63m (2012/04/27)
1864    o pkg/shelfice:
1865     - account for partical cells in surface level below ice-shelf for hydrostatic
1866       pressure calculion (set uniformFreeSurfLev to F); update isomip experiments.
1867    o ad test experiments:
1868     - update and rename to "ad_optfile.local" local AD-optfile specific to a
1869       particular adjoint verification experiment (in verification/*/code_ad/)
1870    o pkg/seaice & pkg/exf:
1871     - Part two of ECCO-CLIVAR code merges.
1872       Completes merge of seaice area relax. code.
1873       Requires unified CPP option EXF_ALLOW_SEAICE_RELAX
1874       to be set in EXF_OPTIONS.h since this pkg controls its I/O
1875       (and avoids second CPP option in SEAICE_OPTIONS.h)
1876     - change default value of costIceStart & costIceEnd to a valid date.
1877     - add snowPrecip to HSNOW in seaice_growth
1878    o pkg/ptracers:
1879     - move ptracers summary and setup check into separated S/R ; add a check for
1880       valid PTRACERS_Iter0 value (error+stop or just warning).
1881    o pkg/cal (+ pkg/ecco):
1882     - avoid calling a S/R with 2 times the same arg (FWD: unless both are only used
1883       as input; and for AD, unless both are not differentiable (e.g., k index)).
1884    o model/src:
1885     - define internal flag "uniformFreeSurfLev" (=T when free-surface level-index
1886       is everywhere k=1) to speed-up some calculations (by pass kSurf reference);
1887       temporary set to usingZCoords value (to be changed to F when using shelfice).
1888     - hydrostatic pressure: implement partial cell near the surface also for
1889       Z-coordinates (for the case where uniformFreeSurfLev=F); replace test on
1890       usingZCoords with test on uniformFreeSurfLev where needed (in NonHyd code).
1891    o pkg/ctrl/ctrl_init.F:
1892     - add a formal parameter to s/r ctrl_init_rec to print
1893       xx_$(ctrl_valiable)_file for easier debugging
1894     - move call of cal_* routines into the if-block where they are really
1895       needed so that xx_$(ctrl_variable)_period can be 0 or -12 without having
1896       to specify a startdate
1897    o pkg/seaice:
1898     - update comments in SEAICE_OPTIONS.h (+ similar update of lab_sea/code and
1899       global_ocean.cs32x15/code versions).
1900     - turn on seaice Multi-category (in data.seaice, SEAICE_multDim=7) for
1901       verification experiment global_ocean.cs32x15.seaice and update results.
1902    o pkg/exf:
1903     - new S/R EXF_GETFIELD_START to return starting-time of a forcing field
1904       (according to useExfYearlyFields).
1905    o pkg/cal:
1906     - move calendar setting & summary (previously in cal_readparams.F) into new
1907       S/R CAL_INIT_FIXED to be called later in the initialisation process, once
1908       length of the simulation is set (after SET_PARMS call); This is an attempt
1909       to fix Pb when, e.g.: pkg/longstep, modifies the length of the run.
1910     - For safety: keep a record of pkg/cal parameter settings status
1911               to allow to STOP if one pkg/cal S/R is called too early.
1912     - add a stop in all basic pkg/cal subroutines if called before setting is done.
1913     - modify cal_getdate.F: stop when nothing was returned;
1914       if called with myIter=-1, simply retrun modelBaseDate (1,2 = startDate_1,_2);
1915       this allows to remove "cal.h" from seaice_read_parms.F & init_mnc_vars.F.
1916    
1917    checkpoint63l (2012/04/04)
1918    o pkg/bbl:
1919      - fix call to FIND_RHO_2D in bbl_calc_rho.F (case multi-tiles per proc);
1920        update global_with_exf output.yearly.txt file.
1921    o pkg/cal:
1922      - start to clean-up cal_set.F ; fix for the case where baseTime is non-zero.
1923      - remove 2 unsused and very short (1 line only) functions ;
1924      - remove unsused subroutines from AD-Diff list.
1925    o model/src:
1926      - start to implement clean wait to stop in initialization S/R (config_check.F,
1927         packages_check.F, ini_parms.F and pkg/obcs/obcs_check.F + pkg/mypackage)
1928    o folowing PRINT_MESSAGE changes:
1929      - remove reminder multiple print to the same file (STDOUT) when multi-threads.
1930    o pkg/bbl:
1931      - modification so it can work with z*
1932      - replace deltaT with dTtracerLev(k) for asynchronous time stepping
1933      - global_with_exf/input.yearly verification; changes output.yearly.txt
1934    o eesupp/src:
1935      - PRINT_MESSAGE: use OpenMP critical instruction (similar to PRINT_ERROR);
1936        writing to unit 0 (if unit=errorMessageUnit) extended to the case myThid=1
1937      - CHECK_THREADS: specific code if using OpenMP threading: improve checking of
1938        # of threads across processors (e.g., different env OMP_NUM_THREADS setting)
1939      - improve special preliminary call to EESET_PARMS (if eedata is read 2 times).
1940      - when using MPI, always set usingMPI=T ; set default accordingly and stop
1941        if not consistent.
1942      - ALL_PROC_DIE: add a BARRIER after MPI_FINALIZE call ; skip this when thread
1943        argument is zero (in case called within single-thread section).
1944    o pkg/fizhi:
1945        clean-up turbulence cold-start switch: decided in fizhi_init_vars.F, stored
1946        in common bloc (fizhi_coms.h) and then passed as argument up to S/R TURBIO.
1947    o pkg/exch2:
1948      - add argument "updateCorners" to S/R exch2_get_uv_bounds (enable to
1949        activate EXCH_IGNORE_CORNERS in vector EXCH S/R).
1950      - switch 1rst EXCH call to IGNORE_CORNERS (instead of UPDATE_CORNERS)
1951        but keep the 2nd with UPDATE_CORNERS: this prevents overwriting good data
1952        with bad ones coming from a not-yet-updated halo.
1953        This should fix the problem when sNx <> sNy and GCD(sNx,sNy) < 2*Olx.
1954    o pkg/frazil:
1955        move FrzForcT diag from frazil_diagnostics_state.F to frazil_calc_rhs.F
1956        http://mitgcm.org/pipermail/mitgcm-devel/2012-March/005384.html
1957    o model/src/config_check.F: add a check for OLx>sNx/OLy>sNy
1958    o verification/lab_sea
1959      * #undef SEAICE_EXCLUDE_FOR_EXACT_AD_TESTING
1960      * #define ALLOW_SST_CONTROL & ALLOW_SST_CONTROL
1961      * nTimeSteps 3 -> 4
1962      * changed reference output accordingly
1963    o pkg/ctrl:
1964      * fix ctrl_get_gen for xx_sst, xx_sss
1965    o pkg/fizhi:
1966      - fix 2 calls to S/R GRD2MSC (argument igrd) in update_earth_exports.F
1967        update results of exp. fizhi-cs-32x32x40 (fail with only 6 digits for cg2d)
1968      - by default, use new version of S/R GETPWHERE (#define TRY_NEW_GETPWHERE);
1969        fix few out-of-bounds indices in referencing vars (initialise igrd to 1);
1970        clean-up fizhi_turb.F (remove unused & uninitialised qdiaglsm array).
1971    o pkg/gmredi:
1972      - add diagnostic of Redi (main diagnonal) vertical diffusive flux of Temp
1973    o pkg/fizhi:
1974      - fix few initialisation and multi-tile Pb: aqualev & gridalt now pass the
1975        (old)aces open64 tuv test.
1976    o pkg/icefront: fix bug and reorder loop in icefront_init_varia.F
1977    o pkg/mom_vecinv:
1978      - fix 1 loop range in mom_vecinv.F to be like all the other loops which
1979        set/update gu,gv/Diss (fix Pb of uninitialised fVerUkp in admom_vecinv
1980        with non-lin free-surf).
1981    o model/src: move k-loop outside of i/j-loops when (re-)computing R_low
1982      in ini/update_masks_etc.F in order to avoid -O3 optimization problems with
1983      some compilers (gfortran 4.6.0 on MacOS)
1984    o momentum:
1985      - separate fVer?(:,:,kUp) & fVer?(:,:,kDown) in argument list of MOM_FLUXFORM
1986        & MOM_VECINV subroutines (to help TAF). This fixes Pb of uninitialised
1987        fVer?(kUp) in admom_fluxform with non-lin free-surf or bottom control.
1988    
1989    checkpoint63k (2012/03/17)
1990    o model/src:
1991       - selectAddFluid (ALLOW_ADDFLUID): add missing term in horizontal momentum
1992         flux-form (mom_fluxform.F) and vertical momentum (calc_gw.F) equations.
1993       - SOLVE_DIAGONAL: switch default to use adjoinable & vectorized version
1994         (#undef SOLVE_DIAGONAL_LOWMEMORY); update output of exp. front_relax.bvp.
1995    o model/src: solve_*diagonal.F
1996       - replace division with multiplication by inverse (similar to original version)
1997         update output of AD exp. global_ocean.90x40x15.
1998       - fix pkg/gmredi/gmredi_calc_psi_bvp.F & pkg/ggl90/ggl90_calc.F
1999         to enable the use of the vectorized & differentiable solve_tridiagonal.F
2000       - test exp. global_ocean.90x40x15/input_ad: switch to advection scheme 20 for
2001         vertical advection (to get solve_tridiagonal tested in AD mode).
2002    o pkg/seaice: ECCO-CLIVAR merge:
2003      1. seaice AREA relaxation
2004         * CPP option: SEAICE_ALLOW_AREA_RELAXATION
2005         * runtime flag: SEAICE_tauAreaObsRelax
2006      2. modified global mean cost imbalance code: CPP option
2007          ALLOW_SSH_GLOBMEAN_COST_CONTRIBUTION
2008    o another iteration on solve_*diagonal.F
2009       Make choices independent of AUTODIFF
2010       Default will be the adjoinable vectorized version.
2011       Alternative choices are:
2012       * non-adjoinable original version with low memory footprint:
2013         #define SOLVE_DIAGONAL_LOWMEMORY
2014       * still adjoinable but does not vectorize (k as inner-most loop):
2015         #define SOLVE_DIAGONAL_KINNER (keeping SOLVE_DIAGONAL_LOWMEMORY undef)
2016    o testreport
2017     - add option to use a home made wrapper around "make"
2018     - remove MITGCM_IEEE env. variable (no longer active)
2019    o pkg/shelfice
2020     - improve computation of friction velocity for velocity dependent
2021       exchange coefficients: include velocities into SHELFICEBoundaryLayer
2022       block to average velocities vertically
2023     - add TAF store directives for SHI_ALLOW_GAMMAFRICT
2024    o Modify diagonal solvers, now three versions (upon request):
2025      #ifndef SOLVE_DIAGONAL_AUTODIFF
2026        1. default version (dating back a while ago)
2027      #else /* def SOLVE_DIAGONAL_AUTODIFF */
2028      # ifdef SOLVE_DIAGONAL_KINNER
2029        2. adjoinable version with k-innermost loop (G. Forget)
2030      # else
2031        3. adjoinable vectorized version of 2.
2032      # endif
2033      #endif /* SOLVE_DIAGONAL_AUTODIFF */
2034      All flags are currently set within routines, but could/should be moved to CPP-options.
2035      Array bounds for 1. are as before, for 2.,3. cover the entire domain
2036      (could be changed for 1. too).
2037    o verification/lab_sea (fwd):
2038      - update the 4 fwd lab_sea test experiment: no longer SEAICE_GROWTH_LEGACY,
2039        use 7 categories (except hb87), new solve4temp params (except salt_plume),
2040        constant salinity (=4) or variable salinity (salt_plume) done through
2041        SItracer.
2042    o pkg/seaice:
2043      - rename parameters: SIsalFrac to SEAICE_saltFrac & SIsal0 to SEAICE_salt0;
2044      - remove old parameters ( SEAICE_freeze, SEAICEturbFluxFormula, SEAICE_gamma_t,
2045         SEAICE_gamma_t_frz, SEAICE_availHeatTaper & SEAICE_availHeatFracFrz)
2046        from SEAICE_PARMS.h ; still need to fix seaice_cost_sst.F (broken when
2047        SEAICE_freeze got retired) but already better than previously with
2048        SEAICE_freeze=123456.7 deg.C;
2049      - move setting of facOpenGrow/Melt from SEAICE_INIT_FIXED to SEAICE_READPARMS
2050        (safer multi-threaded setting); always set SEAICEuseEVP;
2051      - setting of ocean-ice turb. flux coeff: moved from SEAICE_CHECK to
2052        SEAICE_READPARMS & SEAICE_INIT_FIXED (this fixes wrong summary report);
2053        stop if multiple specifications for the same coeff; make sure default
2054        SEAICE_mcPheePiston is compatible with drF(1) & deltaT.
2055    o pkg/obcs:
2056      - allow to switch to upwind 1rst order advection scheme for the advective
2057        flux computation at the open-boundary; disabled for adjoint built.
2058    o pkg/ptracers:
2059      - rename PTRACERS_RESTART.h -> PTRACERS_START.h
2060      - rename ptracers_fields_blocking_exchanges.F -> ptracers_fields_blocking_exch.F
2061      - add parameter to decide when to start a tracer; use internal flag to
2062        know which tracer to step-forward; switch this internal flag at the top
2063        of forward_step.F (new S/R PTRACERS_SWITCH_ONOFF); for now, not enabled
2064        for adjoint built.
2065    o pkg/seaice:
2066      - add SEAICE_SIZE.h anywhere in the code where SEAICE.h is included ;
2067      - move MULTDIM declaration and setting from SEAICE.h to SEAICE_SIZE.h ;
2068      - keep experiment offline_exf_seaice truly single category (set MULTDIM=1).
2069    o pkg/ecco:
2070      - fix writing of output file DiagnosCost_ClimSalt/Theta
2071        and DiagnosCost_DriftSalt/Theta (if multi-tiles per proc).
2072    o pkg/seaice:
2073      - add missing initialisation of COR_ICE array in dynsolver.F
2074      - merging SEAICE_MULTICATEGORY define and undef cases. Now the same code is
2075        compiled either way, and is tested in all exps (multidim was only tested
2076        in lab_sea ad before).
2077      - cosmetic change to prepare for future addition of ITD. no change to results.
2078        no defaults change.
2079      - added run time param SEAICE_multDim (7 for SEAICE_MULTICATEGORY, 1 otherwise).
2080      - by lack of adequate verification experiments, I further used custom versions
2081        of global_ocean.cs32x15 to test multicat or not, with pickup or not. All
2082        should be correct.
2083      - avoid recomputations in ad.
2084    o array initialisation in adjoint mode:
2085      1) pkg/mom_common/mom_calc_ke.F:
2086        add full array initialisation of KE inside mom_calc_ke.F (ALLOW_AUTODIFF_TAMC):
2087        The S/R which calls MOM_CALC_KE initialises KE but in some recomputation
2088        part this initialisation is gone, resulting in Floating Point Exception
2089        (caught by open64 compiler with debug option).
2090      2) model/src/convective_weights.F
2091        set output convectCount over the full array range (instead of doing
2092        an update): this fix a similar issue when called within recomputation (adjoint)
2093        which could by-pass the initialisation (normally done in the caller S/R).
2094    o pkg/seaice:
2095      - final version of turbulent flux params, as agreed at MIT ice meet:
2096           SEAICE_mcPheePiston (default is ~ 0.000875)
2097           SEAICE_mcPheeTaper (default is 0.)
2098           SEAICE_frazilFrac (defualt is 1.)
2099           SEAICE_mcPheeStepFunc (default is false)
2100      - changes results at trunction error level
2101      - ifdef SEAICE_EXTERNAL_FLUXES, disallow SEAICE_waterAlbedo
2102    o added pkg/frazil:
2103      - see frazil_description.tex for details
2104      - verification experiment is global_with_exf/input.yearly; changes output.yearly.txt
2105    o pkg/shelfice/shelfice_thermodynamics.F
2106      - fix exponents for velocity dependent exchange coefficients: change
2107        from 2/3(=0) to 0.66666666666666667
2108      - move computation of velocity dependent exchange coefficients into
2109        separate loop, so that it applies to both thermodynamics
2110      - move some divisions by constants out of loops
2111    
2112    checkpoint63j (2012/02/16)
2113    o pkg/seaice:
2114      - overhaul of seaice_summary.F after feb 2012 clean-up of seaice_growth.F etc.
2115      - SItracer:  added run time params, and allow coupling to ocn salinity.
2116    o pkg/seaice: remove (almost) all divisions by constants within loops
2117      in seaice_growth.F and seaice_solve4temp.F, this changes (only) the cg2d
2118      results of global_ocean.cs32x15.seaice from 16 to 11 digits (but only
2119      those, caused by 1/QI -> recip_QI) -> update output.seaice.txt,
2120      output_adm.seaice_dynmix.txt and also lab_sea: output_adm.evp.txt
2121    o pkg/seaice :
2122      - simplify McPhee tapering, and allow to use it with SEAICEturbFluxFormula
2123        = 1 or 2, using newly added run time parameter SEAICE_availHeatTaper.
2124      - fix d_AREAbyATM, d_AREAbyOCN, d_AREAbyICE diags I broke in r1.148.
2125      - add permanent SItflux diag that corresponds to TFLUX but includes
2126        ice+snow. Hence SItflux-TFLUX should match the ice+snow heat budget.
2127      - allow activation/testing of a fix for suspected missing term in
2128        ocn-ice heat budget (to be confirmed). To test this, you want to
2129        undef SEAICE_DISABLE_HEATCONSFIX, and then set the run time param
2130        SEAICEheatConsFix to .TRUE. that also allows the 'SIaaflux' diagnostic.
2131      - no change in results, fwd or ad.
2132    o global_ocean.cs32x15/results: 3 changes following from the pkg/seaice commit below:
2133      - switch to variable freezing point.
2134           Results change : cg2d -> 1 digits; ad -> 3-6-6 digits.
2135      - bug fix : the sublimation term that was missing is now activated.
2136           Results change : cg2d -> 2 digits; ad -> 8-6-6 digits.
2137      - bug fix : flooding sign term for SIsal0.NE.0.
2138           Result change : cg2d -> 8 digits; ad -> 11-12-9 digits.
2139    o pkg/seaice:
2140      - unified freezing point treatment : the old SEAICE_VARIABLE_FREEZING_POINT
2141        is now the default, and the old default constant freezing point is recovered
2142        with SEAICE_tempFrz0    = -1.96,
2143             SEAICE_dTempFrz_dS = 0.,
2144      - retire SEAICE_freeze (= the old way of specifycing the constant freezing point)
2145      - remove ALLOW_SEAICE_FLOODING brackets; run time switch is already there.
2146      - bug fix (thanks to M. Losch) : the sublimation term that was missing is now
2147        activated. To reproduce old results with this bug define SEAICE_DISABLE_SUBLIM.
2148      - bug fix (silly me) : flooding sign term (seaice_growth.F r 1.149line 1211)
2149        was wrong for SIsal0.NE.0. Changes cs32x15 results (see above item for detail).
2150      - bug fix (thanks to O. Jahn) : area loss for melting  got messed up in
2151        seaice_growth r149 for legacy branch (no results change).
2152      - introduce SEAICE_CAP_SUBLIM : caps sublimation heat flux in solve4temp (code
2153        from I. Fenty).
2154      - results did not change except for global_ocean.cs32x15, mostly due to the
2155        switch to variable freezing point (see above item for detail).
2156    o pkg/thsice:
2157      - fix and simplify interface to salt_plume pkg ; diagnose directly amount of
2158        seawater freezing in thsice_calc_thickn (not used).
2159    o pkg/seaice: turbulent flux term specification via run time params.
2160      - replace CPP switches with run time switches to facilitate testing
2161      - retired CPPs : MCPHEE_OCEAN_ICE_HEAT_FLUX,
2162                       GRADIENT_MIXED_LAYER_TURBULENCE_FACTOR
2163      - added runtime parameter : SEAICEturbFluxFormula
2164      - move Mcphee constants to SEAICE_PARAMS.h
2165      - seaice_readparms.F : read turbulent flux term params (SEAICEturbFluxFormula;
2166                 SEAICE_availHeatFrac/Frz, or SEAICE_gamma_t/_frz if apply);
2167                 remove seaice_summary call (moved to seaice_init_fixed)
2168      - seaice_init_fixed.F : set SEAICE_availHeatFrac/Frz depending on
2169        SEAICEturbFluxFormula, and seaice_summary call (moved from seaice_readparms)
2170      - seaice_summary.F : add missing report of read turbulent flux term set up
2171                           and SITRACER.
2172      - seaice_check.F : check range; inform and stop if retired CPPs are used
2173                         (incl. SEAICE_AGE).
2174      - seaice_growth.F : unified use of SEAICE_availHeatFrac/Frz, without
2175             CPP switch, same computation as before for the different options.
2176      - change results at the truncation level.
2177    o pkg/seaice:
2178      - remove un-used parameters LAD & MAX_TICE ; add new run-time parameters:
2179        useMaykutSatVapPoly (default=F), postSolvTempIter (default=2) and
2180        SEAICE_wetAlbTemp (default=-1e-3). Remove option SEAICE_SOLVE4TEMP_LEGACY.
2181      - update verification/*/input*/data.seaice:
2182        to reproduce previous results with former #defined SEAICE_SOLVE4TEMP_LEGACY
2183        code, set useMaykutSatVapPoly=T & postSolvTempIter=0 ;
2184        and to reproduce previous results with former non-SOLVE4TEMP_LEGACY code,
2185        set SEAICE_wetAlbTemp=0 & SEAICE_snowThick=0.
2186    o pkg/seaice/seaice_solve4temp.F (SOLVE4TEMP_LEGACY):
2187      - remove LEGACY code for solving for tsurf (A1,A2,A3) but maintain the same
2188        algorithm (same choice: useMaykutPolySatVap=T, postSolvTempIter=0);
2189        difference in results only due to machine truncation.
2190      - remove MAX_TICE (tsurf is always =< TMELT anyway); keep MIN_TICE if using
2191        MaykutPolySatVap; keep MIN_LWDOWN.
2192      - adapt SEAICE_MODIFY_GROWTH_ADJ code (untested) to non-legacy formulation.
2193      - update output of verification exp. lab_sea (4 fwd: 11 cg2d digits except hb87,
2194        + 3 AD: 6 digits except evp) and offline_exf_seaice.seaice (12 digits).
2195    o pkg/salt_plume:
2196      - isolate saltPlumeFlux array exch into a specific S/R called from
2197        do_oceanic_phys.F
2198      - add interface to pkg/salt_plume (filling of saltPlumeFlux) in pkg/thsice.
2199    o verification:
2200      - move untested set-up to MITgcm_contrib/verification_other.
2201    o pkg/seaice:
2202      - retire old way of SEAICE_AGE. Now replaced with ALLOW_SITRACER.
2203    o pkg/seaice:
2204      - seaice_solve4temp.F (keeping results unchanged):
2205        * add 2 future run-time params to select which saturation vapor pressure
2206          formula is used and how post-iteration fluxes are set.
2207          Temporary set these 2 params according to option SOLVE4TEMP_LEGACY;
2208        * New piece of code (not used) to update surf. atmos. heat flux F_ia using
2209          the linearized expression to stay consistent with tsurf finding.
2210      - seaice_freedrift.F avoid floating exception in sqrt(y) since y=sqrt(x*x)-x
2211        can be < 0.
2212    o pkg/seaice/seaice_solve4temp.F (SOLVE4TEMP_LEGACY undef):
2213      - remove from F_ia (and from it's derivative dFiDTs1) the contribution of
2214        conductive heat flux F_c , and add it explicitly when updating tsurf as
2215        solution of: Fc = Fia + d/dT(Fia - Fc) *delta.tsurf
2216        so that now F_ia has a consistent meaning through the entire routine.
2217        This causes differences at truncation level: update output of fwd exp.
2218        global_ocean.cs32x15.seaice.
2219    o pkg/seaice:
2220      - lots of editing/cleaning in seaice_solve4temp.F + better documentation
2221        of arrays, sign/direction of fluxes; no effect on results.
2222      - replace hard coded 273.16 (=previous value of celsius2K) by celsius2K
2223        in seaice_budget_ocean.F & seaice_solve4temp.F (SOLVE4TEMP_LEGACY part);
2224        note: this should have been done before changing celsius2K default.
2225      - to keep results unchanged, add back old value of celsius2K in verification
2226        exp. input*/data : lab_sea (AD), offline_exf_seaice (fwd+AD) & seaice_obcs
2227      - replace hard coded seawater freezing temp in seaice_solve4temp.F (part
2228        SOLVE4TEMP_LEGACY) of 271.20 (=previous value of celsius2K + default
2229        value of SEAICE_freeze) by celsius2K+SEAICE_freeze so that seawater
2230        freezing temp is consistent with value in seaice_growth.F ; this causes
2231        differences at machine truncation level: update lab_sea AD output (3/4).
2232    o pkg/seaice:
2233      - mask (in exf_init_fixed.F) atemp,aqh,evap,precip,runoff,lwflx,areamask
2234        and climsst/sss even when using seaice (to prevent calculation that might
2235        use SST on land); does not affect any verification exp.
2236      - apply mask to taux,tauy (in seaice_get_dynforcing.F); update output
2237        of lab_sea.fd & lab_sea.hb87 and global_ocean.cs32x15.seaice_dynmix.
2238    o pkg/seaice/seaice_growth.F: add mask to avoid non-zero ice thickness
2239      over land (non-legacy code)
2240    o vectorize salt_plume package:
2241      - add extra code to salt_plume_frac and salt_plume_tendency_apply_s
2242      - this code computes plumebk everywhere (also over land), thus requires
2243        code to avoid divisions by zero and catch the case of kLev=Nr.
2244      - efficiency of salt_plume_frac is still sub-optimal
2245    o tools (genmake2):
2246      - fix makefile NAME specification (option: -makefile NAME) by adding
2247        "-f $MAKEFILE" in few places where it was missing including makedepend
2248        command (contribution from Paul).
2249    
2250    checkpoint63i (2012/01/24)
2251    o model/src:
2252      - add factorized versions of some EOS code to find_rho.F,
2253        define USE_FACTORIZED_EOS to turn it on (default for TARGET_NEC_SX)
2254    o model/src:
2255      - add celsius2K to namelist PARM01; remove unused recip_rhoNil from PARAMS.h;
2256      - change default celsius2K from 273.16 to 273.15
2257      - to keep results unchanged, add back old value of celsius2K in verification
2258        exp. input*/data : aim.5l_cs, 1D_ocean_ice_column, lab_sea (fwd),
2259         global_ocean.cs32x15(seaice) & cpl_aim+ocn(input_atm).
2260    o model/src: add a little initialisation trick to find_rho.F and find_alpha.F
2261      to make TAF generate vectorizable code
2262    o pkg/seaice/seaice_evp.F: add code (copied from CICE) that avoids underflows.
2263       Turn on by defining SEAICE_EVP_ELIMINATE_UNDERFLOWS. Most compilers
2264       have flags that do this more efficiently.
2265    o pkg/diagnostics/diagstats_calc.F
2266      - for TARGET_NEC_SX fix the treatment of the scaling factor tmpFac=scaleFact
2267    o pkg/obcs (with exch2):
2268      - derive OB indices in overlap region from OB-InsideMask (in obcs_init_fixed.F)
2269        and remove code (in obcs_readparms.F) which was based on EXCH of indices
2270        (through buffer) and did not account for exch2 (e.g., CS-grid) topology.
2271    o pkg/exf and seaice exp:
2272      - change offline_exf_seaice.seaicetd test exp. to use default DIFF1 value (=0)
2273        so that switching off area & heff advection flags does not affect results.
2274      - change default EXF_LWDOWN_WITH_EMISSIVITY to #define in EXF_OPTIONS.h
2275      - keep exp. seaice_obcs & 1D_ocean_ice_column(ad) unchanged (using #undef
2276        EXF_LWDOWN_WITH_EMISSIVITY) and, using pkg/exf default emissivities, update
2277        results of verification experiments: 1D_ocean_ice_column(fwd),
2278        global_ocean.cs32x15.seaice(fwd+ad) & seaice_dynmix(ad), lab_sea (all 8)
2279        and offline_exf_seaice (all 4).
2280    o pkg/seaice:
2281      - remove array YNEG, RIVER, TMIX (replaced by local var) from common block;
2282        remove also areaNm1 & hEffNm1 when SEAICE_GROWTH_LEGACY is undef.
2283      - fix bug: areaNm1 & hEffNm1 are needed in seaice_growth (SEAICE_GROWTH_LEGACY)
2284        but were not filled when resp. SEAICEadvArea=F & SEAICEadvHeff=F and
2285        not multi-dim advection;
2286      - fix seaice_growth.F to compile with both SEAICE_GROWTH_LEGACY and
2287        SHORTWAVE_HEATING #undef.
2288    o optim: make Makefile more robust (?)
2289    o pkg/obcs:
2290      * fix treatment of obcs_read_pickup for TAF
2291    o pkg/shelfice:
2292      * add missing initialisation of num_shifwflx
2293      * new adjoint verification exp. for isomip
2294      * change Prandtl and Schmidt numbers from generic formulations
2295        (in terms of model diffus. and visc.) to separate runtime
2296        parameters, with Holland and Jenkins (1999) default values.
2297    o pkg/exf (interpolation):
2298      - extended input field (2 rows) near the N & S poles:
2299        * fill in with the symetric value (when even Nb of data in longitude)
2300        * add average value at the poles only for scalar quantities ; for vector
2301          component interpolation, skip the averaging and keep duplicated values,
2302          unless the 2 components have same location (uvInterp=T) in which case
2303          interpolate the 2 components together using S/R EXF_INTERP_UV.
2304      - new S/R EXF_INTERP_UV to interpolate the 2 components of a vector field
2305        together: this allows to account properly for local orientation when
2306        averaging at N & S pole.
2307      - add CPP option EXF_USE_OLD_INTERP_POLE to recover old results regarding
2308        exf-interpolation near N & S poles. Undef by default.
2309      - add debug check/print on 1rst iter if debugLevel >=2.
2310    o pkg/exf:
2311      - change masking flags definition (no longer "parameter"), put them in
2312        common block and set them in S/R EXF_INIT_FIXED.
2313      - change recognized masking flag from s,u,v to c,w,s since the mask
2314        to use (maskC,W,S) depends on position on model grid and has little to
2315        do with scalar/vector difference; fix masking if using P-coordinates.
2316      - fix masking of wind-stress (was wrong if interpolated or read on A-grid)
2317        and update results of exp. global_with_exf (x2).
2318      - fix setting of zenith-angle table when SHORTWAVE_HEATING is undef.
2319    o pkg/obcs
2320      - S/R obcs_calc_stevens: fix a small bug (gammat -> gammas where appropriate)
2321    o pkg/exf (interpolation):
2322      - assume periodicity in X only if input field cover full longitude range.
2323      - improve search for lat. index (supposed to be faster, in ~log2(ny) steps,
2324        and should vectorise).
2325      - fix input lat of the 2 added row (in case we provide N.pole data).
2326    
2327    checkpoint63h (2011/12/30)
2328    o pkg/seaice:
2329      - change declaration of UVM from _RL to _RS in order to get B-grid
2330        uIce,vIce monitor when _RS = real*4
2331    o pkg/offline:
2332      - new S/R OFFLINE_RESET_PARMS for resetting main-model params (switch off flags);
2333      - compute vertical velocity if not read from file (switch on exactConserv
2334        & staggerTimeStep);
2335      - fix output of ptracer monitor iter & time for default PTRACERS_monitorFreq.
2336    o verification:
2337      - update grid-files (in tutorial_held_suarez_cs/input and fizhi-cs-32x32x40/input)
2338        with grid-angle generated using "utils/matlab/cs_grid/cubeCalcAngle.m":
2339        fix Pb in yG definition @ 2 missing corners (previously yG was averaged);
2340      - update output of exp. global_ocean.cs32x15.viscA4 after changing
2341        grid-file angles (used here for coriolis-3d);
2342      - remove (or gzip) few files not needed to run fizhi-cs experiments.
2343    o pkg/exf (vector interpolation):
2344      - rotate vector component toward local grid-axis orientation using grid-angles
2345        (stored in GRID.h) instead of locally computed rotation angle; keep old code
2346        available with exf option EXF_USE_OLD_VEC_ROTATION (undef by default).
2347    o pkg/seaice:
2348      - allow to compile with exf options ALLOW_ATM_TEMP or ALLOW_DOWNWARD_RADIATION
2349        undefined. Fix and remove the stop when ALLOW_RUNOFF is undefined.
2350    o pkg/PKG_OPTIONS.h files:
2351      - move #include "CPP_OPTIONS.h" just after #include "PACKAGES_CONFIG.h",
2352        outside of the #ifdef ALLOW_THISPKG / #endif block.
2353      - update verification/*/code/PKG_OPTIONS.h files.
2354    o add a verification experiment (offline_exf_seaice/input.seaice) that test
2355      the B-grid LSOR solver
2356    o pkg/seaice: sort out emissivity and long wave radiation step 2:
2357      - add emissivity for snow and ice as new run-time parameters
2358        (unfortunately) that default to the corresponding exf values; this
2359        changes results in most verification experiments so that for backward
2360        compatibility these parameter have to be set explicitly to inconsistent
2361        values (ugly);
2362      - the exf-flag EXF_LWDOWN_WITH_EMISSIVITY then gets rid off the hard-wired
2363        emissivities of 0.97 associated with lwdownloc in S/R seaice_solve4temp
2364        until we agree how to handle this bug properly
2365    o pkg/exf (interpolation):
2366      - add a set of run-time param ({inputfield}_interpMethod), one for
2367        each interpolated input field, to select the interpolation method
2368        with a value of zero switching off the interpolation;
2369      - print interpolation parameters to standard output;
2370      - refine exf_check.F accordingly ; stop if USE_NO_INTERP_RUNOFF is defined
2371        (to use instead runoff_interpMethod=0 in data.exf).
2372      - simplify default setting of interpolation parameters (for all fields,
2373        set position to match model grid cell-center position, leading to trivial
2374        interpolation in case of regular Lat-Lon grid) and fix for the case of
2375        non-uniform delY.
2376    o pkg/exf/exf_radiation.F: add the factor ocean_emissivity to lwdown, for
2377       within #ifdef EXF_LWDOWN_WITH_EMISSIVITY/#endif. Unless ocean_emissivity=1.
2378       this factor is absolutely required, because the lw exitance (= out-going
2379       long wave radiation) is emissivity*stefanBoltzmann*T^4 + rho*lwdown,
2380       where the reflectivity rho = 1-emissivity for conservation reasons. Once
2381       this is established, we can remove the CPP-Flag (if we want to).
2382    o pkg/seaice:
2383      - qualify a stop statement in S/R seaice_check: EXF_READ_EVAP and
2384        ALLOW_BULKFORMULAE are only required if SEAICE_EXTERNAL_FLUXES is defined
2385      - sort out emissivity and long wave radiation, step 1: make SEAICE_emissivity
2386        what the name implies (and not emissivity*BoltzmannConstant), this means
2387        the old default value of 5.5e-8 now means
2388        5.5e-8/5.670e-8 = 0.97001763668430343479 as ocean_emissivity in
2389        S/R exf_readparms
2390      - FV-discretization of the B-grid LSOR solver, turn on with
2391        SEAICE_LSRBNEW. This new solver also involves a slight re-organization
2392        of the calling routine dynsolver, so that B and C-grid code look a
2393        little more alike.
2394      - fix index bugs in ostres.F (B-grid code)
2395    o pkg/seaice/seaice_ocean_budget.F: change (unused) code to make it look better
2396    o pkg/seaice/seaice_readparms.F: make ocean_emissivity*stefanBoltzmann the
2397      default for SEAICE_emissivity, if useEXF; requires setting a wrong
2398      parameter value in global_ocean.cs32x15/input.seaice/data.seaice for
2399      backward compatiblity
2400    o model/src: use sigmaR in calc_ivdc
2401    
2402    checkpoint63g (2011/12/16)
2403    o pkg/seaice/seaice_growth.F:
2404      fix heat conservation of the coupled ocean-seaice system.
2405      when SEAICE_HEAT_CONSERV_FIX is defined, the mismatch of
2406      solid vs liquid water treatment is resolved via QNET.
2407    o pkg/seaice/seaice_growth.F:
2408      add missing term for sublimation in saltFlux, which was breaking conservation.
2409    o pkg/seaice/seaice_model.F:
2410      Remove this patholigical case treatment in evolution branch,
2411      where it is un-necessary and breaks conservation.
2412      Update global_ocean.cs32x15/results accordingly for
2413      output.seaice.txt output_adm.seaice.txt and output_adm.seaice_dynmix.txt
2414    o model/src:
2415      useRealFreshWaterFlux: remove masking of EmPmP (using maskInC) in
2416      external_forcing_surf.F and apply mask directly in S/R SOLVE_FOR_PRESSURE.
2417    o pkg/obcs:
2418      modify Stevens boundary conditions so that S/R obcs_calc_stevens computes
2419      tendency for temperature and salinity that is then applied to update
2420      theta and salt in S/R obcs_apply_ts; this requires proper masking of all
2421      horizontal advection and diffusion contributions on the boundary (in
2422      S/Rs gad_advection, gad_calc_rhs, gmredi_rtransport, gmredi_calc_diff), and
2423      removing the mask in S/R timestep_tracer. The advantage of this approach is
2424      that the updated tracer values include contributions from the surface
2425      forcing and vertical diffusion.
2426      This modification changes exp4.stevens because of vertical diffusion.
2427    o model/src:
2428      change non-curvilinear grid setting to also work with exch2 + blank tiles:
2429      - move delX,delY to new header file (SET_GRID.h) and adjust length to 1rst
2430        face dimensions.
2431      - new S/R INI_LOCAL_GRID to define model tile-local grid (using same units
2432        as delX,delY) and called from S/R INI_CARTESIAN_GRID, INI_CYLINDER_GRID
2433        and INI_SPHERICAL_POLAR_GRID.
2434      change test-experiment global_ocean.90x40x15:
2435      - split the domain in many more tiles (9x4 tiles of 10x10 each);
2436      - switch to exch2 and remove 1 blank-tile (but only for MPI test).
2437      - update results of both test (std & dwnslp).
2438    o pkg/diagnostics/diagstat_calc.F: fix problem with non-initialised halos in
2439       tmp-fields for TARGET_NEC_SX at the cost of extra loops and less vectorisation
2440    o model/src:
2441      - take sigma-coords related code out of update_etah.F into new S/R UPDATE_ETAWS
2442        and fix initialisation when using sigma-coords.
2443    o model/src:
2444     - improve Gael's changes from Jan 14, 2011 "addition of an 'update' of hfacc etc.
2445       to their current value at the beginning of forward_step.F": add a new run-time
2446       switch "doResetHFactors" (default=false) and use it to do (or not) the resetting.
2447     - set doResetHFactors=T in the following test exp:
2448        global_ocean.90x40x15/input (rStar) & input.dwnslp (linFS),
2449        global_ocean.cs32x15/input.seaice (rStar), hs94.cs-32x32x5/input.impIGW (linFS)
2450        and tutorial_global_oce_in_p (nonLinFS in p)
2451    o pkg/ecco
2452      - added IES cost term
2453    o verification/advect_xz
2454      - scale down the depth by 1/100 (from 200 km to just 2.km)
2455      - add secondary test using divergent flow, r-star and implicit vertical advection.
2456      - add note (check_conserve_TS.txt) and matlab script to check global
2457        conservation of T & S with NonLin-FreeSurf and Adams-Bashforth.
2458    o pkg/rbcs:
2459      - add missing relaxUFile & relaxVFile in namelist (in rbcs_readparms.F).
2460    o pkg/obcs (Stevens BCs):
2461      - fix various problems in the phase speed computations of the Stevens
2462        boundary conditions:
2463        - sign error for western and southern boundaries,
2464        - time tendencies were underestimated by factor of dTracerLev and some just
2465          zero (for multidim advection schemes) -> now estimate time tendencies
2466          from difference between previous (n) time level and the one before (n-1);
2467          this requires storing a field per tracer per boundary, also in the pickup
2468          files.
2469        - replace deltaTmom in cflMer/Zon computation with dTracerLev
2470        - set default phase velocity to cflMer/Zon
2471      - update verification experiment exp4.stevens
2472    o pkg/generic_advdiff (implicit_r):
2473      - fix implicit vertical advection conservation with AB and/or NonLin-FreeSurf
2474        (remove Tr*d/dz(w) in gad_implicit_r.F and add it in gad_calc_rhs.F);
2475      - fix implicit vertical diffusion or advection with NonLin FreeSurf
2476        (was using current recip_hFacC instead of future recip_hFacC): set future
2477        recip_hFac in thermodynamics.F and pass & use it in all vertical implicit
2478        solver S/R ;
2479      - fill diagnostics of vertical advective fluxes (computed from tendency)
2480        when using implicit vert. advection;
2481      - update output of exp that uses NonLin-FreeSurf & implicit vertical diffusion:
2482         global_ocean.90x40x15 (fwd+AD), global_ocean.cs32x15 (4 fwd +4 AD),
2483         tutorial_global_oce_in_p (fwd), tutorial_tracer_adjsens (AD)
2484         and cpl_aim+ocn (used in ocean); to be fixed: bottom_ctrl_5x5.
2485    o pkg/diagnostics:
2486      - add diags for T & S tendency which goes through Adams-Bashforth.
2487    
2488    checkpoint63f (2011/11/30)
2489    o pkg/obcs/obcs_calc_stevens.F:
2490      - join some loops to reduce number of if-statements
2491      - fix a bug in code for northern and southern boundaries.
2492    o pkg/seaice/seaice_init_varia.F
2493      - undo resetting UVM=0 that has slipped in unnoticed in r1.49 and
2494        caused zero ice-velocities for the B-grid code
2495    o pkg/seaice/seaice_init_fixed.F
2496      - fix a bug in the initialisation of the second metric terms
2497        k2AtC and k2AtZ: k2AtC was set to the value of k2AtZ and k2AtZ was 0.
2498      - this affects all seaice configurations with useCurviLinearGrid = .true.
2499        and SEAICEuseDynamics = .true. (default) and SEAICEuseMetricTerms
2500        = .true. (default)
2501      - the only verification experiment affected is global_ocean.cs32x15:
2502        icedyn, seaice, and seaice_dynmix (AD)
2503    o pkg/thsice/thsice_diagnostics_state.F
2504      - only for TARGET_NEC_SX: initialise all of tmpFld, so that overlap does
2505        not contain garbage that can lead to surprises in diagstats_calc.F
2506    o model/src:
2507      - move bi,bj loops inside INTEGR_CONTINUITY ;
2508      - call INTEGR_CONTINUITY directly from forward_step.F
2509        (previously called from momentum_correction_step.F)
2510      - call UPDATE_ETAH from integr_continuity.F and update initialise_varia.F,
2511        forward_step.F and pkg/ecco/the_main_loop.F
2512    o model/src/do_oceanic_phys.F:
2513      - reset addMass to zero only if useICEFRONT ;
2514      - separated k-loop for rhoInSitu calculation ;
2515      - add 2 diagnostics for wVel*delta^k(Rho) at constant pressure (= WdRHO_P)
2516        and at constant T,S (= WdRHOdP);
2517      NOTE: change diagnostics WRHOMASS : this is now simply the Vertical transport
2518        of In-Situ Density (Anomaly) (=wVel*rho^bar-k) (previously was Vertical
2519        transport of locally-referenced potential density);
2520        to recover old diag: (WRHOMASS)_old = (WRHOMASS)_new -1/2 * (WdRHOdP)
2521    o gluemnc:
2522      - replace ncrcat with ncks when adding variables to *.glob.nc
2523      - change the way variables without record dimensions are handled so that
2524        files that have variables with and without record variables can be glued:
2525        add a record dimension with a new unique name to be able to differentiate
2526        between variable with and without a-prior record dimensions. Remove
2527        this record dimension before adding the variable to the *.glob.nc file.
2528        This procedure automatically works also for grid.*.nc files that do not
2529        have any record dimension.
2530    o verification/cpl_aim+ocn:
2531      - generate new reference output on baudelaire (gfortran, mpich2) (previously
2532        from old aces-grid cluster, ao + ifort) and update 'run_cpl_test' script.
2533    o pkg/obcs/obcs_calc_stevens.F:
2534      - add code for northern and southern boundaries.
2535      - reorder some loops to save some operations and so that drFBar can be scalar
2536    o model/src:
2537      - re-arrange extrapolation calculation in Adams-Bashforth S/R (affects machine
2538        truncation) and add diagnostics for Adams-Bashforth tendency increment.
2539      - update test-exp. AD output:
2540        1D_ocean_ice_column, bottom_ctrl_5x5, lab_sea.noseaicedyn, obcs_ctrl;
2541      and FWD output: exp4 (x3), fizhi-cs-32x32x40, fizhi-cs-aqualev20,
2542        front_relax (x3), global_ocean.90x40x15 (x2), global_ocean.cs32x15 (x5),
2543        global_ocean_ebm, ideal_2D_oce, internal_wave, isomip (x3), lab_sea (x4),
2544        matrix_example, MLAdjust (x5), natl_box (x2), tutorial_advection_in_gyre,
2545        tutorial_global_oce_in_p, tutorial_global_oce_latlon and
2546        tutorial_plume_on_slope.
2547    o pkg/diagnostics/diagstats_calc.F: add special code for TARGET_NEC_SX
2548      that vectorises. This code uses 3 extra 2D fields, F90 array assignments
2549      and F90 intrinsic routines SUM, MINVAL, MAXVAL, but since TARGET_NEC_SX
2550      does not even come with an F77 compiler anymore, this should not be
2551      a limitation
2552    
2553    checkpoint63e (2011/11/06)
2554    o pkg/seaice adjoint of LSR:
2555      - substantially rework STORE dirs.
2556      - add new flag SEAICE_LSR_ADJOINT_ITER and parameter SOLV_MAX_FIXED
2557        this flag will do SOLV_MAX_ITERS but only store SOLV_MAX_FIXED fields
2558        and only perform SOLV_MAX_FIXED adjoint iters.
2559        If flag SEAICE_LSR_ADJOINT_ITER is undef-ined, the store in the iteration
2560        always goes to same record, meaning that the last forward field will be
2561        the one used in the adjoint - an approximation.
2562      - now produces non-zero LSR-related gradients, and acceptable gradients for
2563        An's zonal (x-z) test case (to be checked in)
2564      - lab_sea: produces acceptable gradients for lab_sea with forward/backward LSR
2565        (but these are screwed up by the thermodynamics in the first place);
2566        reduce from 4 to 3 timesteps to avoid t.d. issue as temporary solution;
2567        output_adm.txt also reflects changes to seaice_lsr
2568      - global_ocean.cs32x15:
2569        * the "default" input_ad.seaice has been re-defined to always exclude dynamics
2570          (output_adm.seaice.txt was updated)
2571        * new input_ad.seaice_dynmix tests a forward LSR / backward free-drift
2572          (output_adm.seaice_dynmix.txt)
2573    o test-exp. exp4+stevens:
2574      - switch off pTracers and nonHydrostatic (restart problems with NH); update output
2575    o pkg/seaice (lsr solver):
2576      - put coriolis term into FORCEX,Y (as in seaice_evp.F; previously in rhsU,V only);
2577        update output (change truncation) of FWD test exp lab_sea & global_ocean.cs32x15
2578      - fix SEAICEuseFREEDRIFT for new OBCS version (ndef OBCS_UVICE_OLD)
2579      - new parameter "LSR_mixIniGuess" allows (if=2,4) to mix free-drift solution
2580        into initial guess for linearised solver; use weight ~ (1/err)^2,4.
2581      - compute (with new S/R) and print initial (+ free-driff sol. if available)
2582        and final residual of linearised system.
2583    o pkg/pp81: add diagnostics for vertical eddy viscosity and diffusivity
2584      (requires new subroutines pp81_init_fixed.F/pp81_diagnostics_init.F)
2585    o pkg/obcs: Stevens BCs (still only for east and west)
2586      - fix Stevens BCs by using intermediate velocities of previous
2587        time step as "baroclinic" contribution rather velocity of one grid cell
2588        inside the boundaries; more consistent but makes the entire treatment
2589        more complicated, requires new pickup files and two new S/Rs:
2590        obcs_copy_uv_n and obcs_save_uv_n
2591        keep old version with flag OBCS_STEVENS_USE_INTERIOR_VELOCITY
2592        (undefined by default)
2593      - silently move computation of some grid factors into separate loops to
2594        save some recomputations
2595      - add a hack for non-linear free surface
2596      - add a verification experiment to exp4 that tests this code
2597    o make gluemnc/xplodemnc work with (moron) non-GNU shell tools
2598    
2599    checkpoint63d (2011/10/25)
2600    o pkg/obcs + seaice-dynamics:
2601      - new implementation calls OBCS_APPLY_UVICE (in seaice_dynsolver.F) before
2602        solving for uIce,vIce and prevent SEAICE_LSR or SEAICE_EVP to modify OB
2603        values (consistent with an implicit method).
2604      - add option OBCS_UVICE_OLD (in OBCS_OPTIONS.h, defined by default) to
2605        return to older implementation (same results as before); note that none of
2606        the "experimental" OBCS_SEAICE options are implemented in the new version.
2607      - switch test exp. seaice_obcs to use new version (update output).
2608    o pkg/seaice:
2609      - add few stop (B-grid & CS-exch, B-grid & obcs, AUTODIFF & SEAICE_maskRHS)
2610      - add parenthesis in Water-Ice drag calculations (evp & lsr);
2611      - in seaice_lsr.F, simplify and fix AA3 setting in case sNx or sNy=1;
2612        and fix case SEAICE_waterDrag=0 (but unstable if no or little seaice)
2613      - update output of test exp lab_sea that uses evp or lsr (fwd+ad)
2614        and global_ocean.cs32x15 (icedyn & seaice fwd+ad).
2615    o pkg/layers:
2616      - Include potential density as new coordinate (Thanks to David Munday)
2617    o pkg/dic:
2618      - Remove subroutine CALC_PCO2_APPROX_CO3 from carbon_chem.F and add
2619        carbonate computation/output to CALC_PCO2_APPROX
2620    o pkg/generic_advdiff
2621      - make TAF generate code that vectorizes:
2622        gad_dst3fl_adv_*.F, gad_u3c4_impl_r.F
2623    o model/src:
2624      - improve vectorization also for adjoint code of
2625        solve_tridiagonal and solve_pentadiagonal. As this requires up to
2626        5 new 3D-fields, this code is only turned on for the combination of
2627        ALLOW_AUTODIFF_TAMC and TARGET_NEC_SX. Also remove error message
2628        for singular matrix check (only for TARGET_NEC_SX).
2629      - remove hard-wiring of CPP-flag ALLOW_SOLVERS_KLOOPINSIDE to
2630        ALLOW_AUTODIFF. This flag now needs to be set outside of
2631        solve_tri/pentadiagonal.F
2632    o pkg/exf:
2633      - fix previous modif in exf_readparms.F (revision 1.66: treatment of
2634        optional namelist EXF_NML_OBCS).
2635      - add many debug-print (to trace down where pkg/cal error msg comes from)
2636    o pkg/mom_vecinv/mom_vi_hdissip.F
2637      - rearrange loops so that vectorization is improved and in particular
2638        the adjoint routine vectorizes. The code is a little longer now, but I
2639        think easier to read.
2640        Note: CPP-flag MOM_VI_ORIGINAL_VISCA4 is not tested.
2641    o pkg/seaice:
2642      - allow to specify initial seaice velocity from files (uIceFile,vIceFile)
2643    o pkg/exch2:
2644      - alternative code (without tile x tile matrix) for cumulated (global) sum;
2645        used as default; keep using matrix version in adjustment.cs-32x32x1.
2646    o tools/build_options:
2647      - after merging some MPI and/or multi-threads specific optfiles so that
2648        the modified default optfile support both built (using genmake2 -mpi
2649        for the MPI built, using genmake2 -omp for OpenMP built),
2650        move now obsolete optfiles to tools/build_options/unsupported/
2651       (add copy of email sent to support list in doc/optfiles_changes.txt)
2652    
2653    checkpoint63c (2011/09/28)
2654    o pkg/ebm:
2655      - fix ebm_zonalmean.F for several procs in Ydir (nPy > 1); update output of
2656        test exp. global_ocean_ebm (affects machine truncation, 12 digits for cg2d)
2657    o pkg/seaice (SItracer pickup)
2658    * Simple code for pickup of SItracer fields (#define ALLOW_SITRACER)
2659      To be done:
2660      - thorough testing of missing fields in S/R seaice_read_pickup
2661      - thorough matching between generic tracers and specific fields used
2662        (e.g. volume-weighted age, area-weighted age, salinity, ...)
2663    o pkg/grdchk:
2664      - all procs calculate and print finite-difference gradient (for testreport)
2665      - change description output used by testreport;
2666      - AD testing: also compare and report Finite-difference gradient;
2667        => update all output_adm*.txt
2668    o test exp. global_ocean_ebm:
2669      - switch back useRealFreshWaterFlux (no problem anymore with run-off);
2670        and turn on exactConserve; update (fwd) output.
2671    o pkg/seaice (LSR):
2672      - print to STDOUT number of solver iterations at SEAICE_monFreq interval.
2673      - modify solver to deal cleanly with u/v switch at face edges (CS-grid):
2674        * identical results with non-CS topology (but save up to half of EXCH calls)
2675        * no much changes in cs-32 verification tests since no ice at face edges
2676         (differences due to convergence criteria, since nb of iterations changed)
2677        * expect some differences on lat-lon-cap grid.
2678        update FWD results of global_ocean.cs32x15 test exp. (icedyn & seaice)
2679    o pkg/exch2:
2680      - add new CPP option to disable Cumul-Sum matrix (to save storage when using
2681        many tiles); until alternative coding is added, just add a stop.
2682    o pkg/kpp:
2683      - move ptracer/salt correction to KPP diffusivity from calc_3d_diffusivity.F
2684        to S/R KPP_CALC_DIFF_PTR (+ add tracer-index to argument list).
2685    o optfiles:
2686      - merged few MPI specific (*+mpi*) and multi-threads specific (*+mth) optfiles
2687        into corresponding standard one, which now support different build:
2688        (when using "genmake2 -mpi" for MPI built, "genmake2 -omp" for OpenMP built)
2689      - add "darwin_amd64_gfortran" optfile (initially from Constantinos, tested by Gael)
2690    o pkg/obcs (seaice):
2691      - add missing EXCH for uIce,vIce after applying OBCS;
2692      - remove S/R EXF_SWAPFFIELDS_X/Y , disable S/R EXF_SET_OBCS_X/Y by adding
2693        argument = number of levels to S/R EXF_SWAPFFIELDS_XZ/YZ and S/R
2694        EXF_SET_OBCS_XZ/YZ ; update obcs_exf_load.F;
2695      - fix EXF_SET_OBCS_XZ/YZ for multi-threaded (assuming loaded arrays are shared)
2696      - verification exp. seaice_obcs: split domain in 2 tiles ; add SIZE.h_mpi
2697        and eedata.mth for MPI and mutlti-threaded testing.
2698    o pkg/flt:
2699      - make FLT EXCH working with multi-threads (and MPI + multi-threads);
2700      - use buffer for floats IO (trajectories & profiles); size set in FLT_SIZE.h;
2701      - fix pickup and trajectories + profiles output with multi-threads;
2702      - add parameter to select group of fields to write along trajectory and
2703        profile (default unchanged);
2704      - only call PORT_RAND* function when flt_noise <> 0;
2705      - add multi-threaded test for verification exp. flt_example.
2706    o eesupp/src:
2707      - fix S/R ALL_PROC_DIE for MPI+multi-threads.
2708      - USE_OMP_THREADING: check that number of threads (from eedata) matches
2709        actual number (from env.var. setting).
2710    o pkg/ebm:
2711      - fix multi-threading in ebm_area_t.F ; clean-up EBM.h header file.
2712      - add multi-threaded test for verification exp. global_ocean_ebm
2713    
2714    checkpoint63b (2011/08/29)
2715    o pkg/ebm:
2716      - fix sign of runoff;
2717      - update directly forcing fields (Qnet,EmPmR) to use standard
2718        external_forcing_surf.F (remove ebm_forcing_surf.F);
2719      - avoid loading forcing fields a 2nd time (1rst time from ini_forcing.F);
2720      - set either tauThetaClimRelax (in data) or tauThetaZonRelax (in data.ebm)
2721        and apply relaxation towards corresponding SST field (2-D map or ZonAver).
2722      - update global_ocean_ebm parameters file data and update output (fwd+ad).
2723    o verification/matrix_example:
2724      - split domain in 8 tiles (2x4); add SIZE.h_mpi and eedata.mth for
2725        MPI and mutlti-threaded testing.
2726    o pkg/matrix:
2727      - change name of S/R MATRIX_INIT to S/R MATRIX_INIT_VARIA ;
2728      - fix for multi-tiles (add bi,bj indices to exp/impMatrixCounter);
2729      - fix for multi-threaded (remove DATA statement);
2730      - use standard DIFFERENT_MULTIPLE function;
2731      - add MATRIX_OPTIONS.h
2732    o verification/matrix_example:
2733       To allow to split the domain in several tiles, change the domain size
2734        from 31x31 to 32x32 by adding 1 row (on Southern side) + 1 column (on
2735        Western side) of land points.
2736    o (*_)write_pickup:
2737      - fix few bugs in mypackage_read/write_pickup.F
2738      - in MDS_WR_METAFILES calls, replace "myTime" by a local copy into
2739        array of length 1 (was caught by compiler syntax-check).
2740    o pkg/diagnostics (velocity potential solver):
2741      - fix initialisation of main diagonal matrix (for overlap values)
2742    o tools/build_options:
2743      - towards single optfile for MPI and non-MPI built: merge few +mpi optfile
2744        into previously non MPI one (linux_am64 pgf77,open64,pathf90,ifort11)
2745      - linux_amd64_gfortran: merge +mpi_generic version into standard optfile:
2746        * move IEEE flags to DEVEL section; take IEEE flags from +mpi_generic ;
2747        * FAST case: for now, keep -O3 with ini_masks_etc.F in NOOPTFILES list;
2748        and use "-devel" testreport option for standard testing on baudelaire.
2749    o pkg/grdchk:
2750      - Assume that all gradient-check position are within the same tile
2751        corresponding to global indices (iGloTile,jGloTile) and that
2752        positions (i,j indices or nbeg) are local to this tile;
2753      - set tile local-indices and proc. number according to tile global-indices;
2754      - remove grdchkwhichproc from namelist (retired param);
2755      - send adjoint gradient to all procs so that all procs print it to STDOUT;
2756      - switch on MPI test for global_ocean.90x40x15 AD test experiment.
2757    o adding package bbl (Bottom Boundary Layer)
2758      description in MITgcm/pkg/bbl/bbl_description.tex
2759      example/test experiment in MITgcm_contrib/bbl
2760    o adjoint verifications
2761      - changed 5 experiments to multi-tiles
2762        * global_ocean.90x40x15
2763        * obcs_ctrl
2764        * offline_exf_seaice
2765        * tutorial_dic_adjoffline
2766        * tutorial_tracer_adjsens
2767        changed reference output for those that crossed tile boundaries
2768        (changed choices of gradient check positions)
2769      - with same tiling, switch on MPI test for the last 4 (add SIZE.h_mpi)
2770      - temporary bug fix in grdchk_loc.F for obcs
2771    o genmake2 & testreport
2772      - add target "obj" (just for OBJFILES files) to Makefile;
2773      - add option to specify FEXTRAFLAGS on command line.
2774    o pkg/mypackage:
2775      - remove bi,bj arguments from argument list of S/R MYPACKAGE_CALC_RHS
2776    
2777    checkpoint63a (2011/08/02)
2778    o pkg/diagnostics (velocity potential):
2779      - fix velocity-potential calculation when using OBCS: balance net inflow
2780        at each level (new S/R OBCS_DIAG_BALANCE).
2781      - fix some of the problems with OBCS in stream-function calculation.
2782    o pkg/exf/exf_readparms.F
2783      - make treatment of optional namelists (EXF_NML_04, EXF_NML_SGRUNOFF,
2784        EXF_NML_OBCS) more consistent, so that you need not have these lists
2785        in data.exf when they are not used.
2786    o optim/optim_readdata.F:
2787      - add some output about obcs variables that might help debugging
2788      - add a check about nvarlength
2789    o pkg/ctrl: once again, fix computation of endrec in s/r ctrl_init_rec
2790    o pkg/diagnostics (velocity potential):
2791      - fix mask for OBCS (still problems in stream-function with OBCS);
2792      - add specific parameter (default = main code CG2D params) for solver;
2793      - in case of poor convergence, use solution corresponding to lowest residual.
2794    o pkg/seaice/seaice_growth.F: small changes that permit vectorizable
2795      adjoint code. In general statements like tmpscal=fld(i,j) are problematic
2796      and should be avoided where possible.
2797    o model/src (rStar):
2798      - include r* effect on reference-state (PhiRef) in totPhiHyd
2799        (so that it's really the potential anomaly at the cell center);
2800        affect solution only if z* with full pressure in EOS.
2801      - test-exp global_ocean.90x40x15: reduce viscA4 (was not stable) and
2802        update output (because of z* in totPhiHyd and viscA4 changes);
2803      - keep the previous diagnostics as "PHIHYDcR" (closer to potential anomaly
2804        @ constant r) until interpolation at constant r is implemented.
2805    o pkg/diagnostics
2806      - fix RCENTER diagnostics in case cell center is not at interface middle
2807    o add code for TEOS-10 (www.teos-10.org, McDougall et al. 2011). Use
2808      this eos with eosType = 'TEOS10', in data (PARM01). This eos implies
2809      that THETA and SALT are "conservative temperature" and "absolute
2810      salinity"
2811    o pkg/ctrl
2812      - fix computation of endrec in s/r ctrl_init_rec
2813      - ctrl_pack/unpack_*: remove unused variables and some obsolete code
2814    o pkg/seaice/seaice_growth.F
2815      - fix recomputation with FENTY_AREA_EXPANSION_CONTRACTION code,
2816        remove then obsolete STORE directives
2817      - fix STORE directives for tice and tices, so that only the
2818        appropriate part of the fields are stored (and not the entire
2819        field); update global_ocean.cs32x15.seaice AD output.
2820      - cosmetic changes: adjust CPP flags and indentation for better
2821        legibilty
2822    o pkg/autodiff: add mnc-output of adBottomDragFld (code contributed by
2823      Chris Wilson)
2824    o pkg/gmredi:
2825       Add Sub-Meso Eddies parameterisation from Baylor (for now, disabled with TAF),
2826       and test it in verification exp. "front_relax.bvp" (update output.bvp.txt)
2827    
2828    checkpoint63  (2011/07/11)
2829    o pkg/exch2:
2830     - rename+move: nTiles in W2_EXCH2_PARAMS.h --> exch2_nTiles in W2_EXCH2_TOPOLOGY.h
2831     - exch2 version of Cumul-Sum routine: S/R W2_SET_MAP_CUMSUM set up the
2832       (2*nTiles)x(nTiles) Cumul-Sum matrix and Master Proc collects all tiles X,Y
2833       increments, calculates Cumul-Sum @ tile origin and sends results to each tile.
2834    o pkg/diagnostics:
2835     - deal with pairs of post-processed diags which are computed together; in
2836       particular, re-order list of diags within 1 file to save 2nd computation.
2837     - add S/R to compute velocity stream-function (called after velocity-potential
2838       calculation) from divergence free transport -> new diagnostics "PsiVEL".
2839     - add parameter to select grid-point location where PsiVEL == 0.
2840    o eesupp/src:
2841       new S/R to calculate cumulated sum on tiled array, corner grid-cell location
2842       (specific S/R needed with exch2 topology - for now, just print an error msg)
2843    o pkg/shelfice
2844     - Implement friction velocity-dependent transfer coefficients following
2845       Holland and Jenkins, JPO, 1999
2846       Original code by M. Losch with small modifs.
2847       Enable with CPP option SHI_ALLOW_GAMMAFRICT
2848       and runtime flag SHELFICEuseGammaFrict
2849    o verification lab_sea & global_ocean.cs32x15:
2850     - use tools/xmakedepend (instead of cyrus_makedepend, in genmake_local):
2851       does not miss some dependencies (but is slower) and also works with many files
2852       (default makedepend limitation for AD built).
2853     - use cyrus_makedepend in adjustment.128x64x1 (so that it still tested).
2854    o pkg/diagnostics:
2855     - add run-time parameter "useMissingValue" (def=False) to fill land-point
2856        (i.e., where mask=0) with MissingValue ; used only in MNC output file.
2857       This replaces CPP-option DIAGNOSTICS_MISSING_VALUE.
2858     - Extend the use of "missing_value" setting from data.diagnostics for the case
2859       of counter-diagnostics (where fraction-weight is zero). This applies both to
2860       MNC and MDS output files.
2861    o pkg/seaice/seaice_growth.F:
2862      - add 'a priori' cap of latent heat flux based on actual mass considerations
2863        when SEAICE_ADD_SUBLIMATION_TO_FWBUDGET is used in conjunction with the
2864        non-legacy seaice_solve4temp.
2865      - add diagnostic of the residual sublimation freshwater flux (the freshwater
2866        flux taken from the ocean if the total actual latent heat fluxes exceed
2867        the maximum)
2868      - remove the CPP switch around the *_FWbySublim unit change and move diagnostic
2869       fill for SIatmQnt, SIfwSubl, SIatmFW to the end of seaice_growth.F.
2870      - add diagnostic of the actual sublimation freshwater flux (that is 0. ifndef
2871       SEAICE_ADD_SUBLIMATION_TO_FWBUDGET) and of the latent heat flux (evap+sublim).
2872      - bug fix : frWtrAtm needs a_FWbySublim ifdef SEAICE_ADD_SUBLIMATION_TO_FWBUDGET.
2873      - bug fix : missing part to Martin's r_FWbySublim pathological case fix.
2874    o verification 1D_ocean_ice_column:
2875       made model domain truly 1x1x23 instead of 5x5x23 with only center cell (3,3,:) wet
2876       update results
2877    o pkg/diagnostics:
2878     - Implement setting of "Post-Processed" diagnostics (corresponding to gdiag(5)='P')
2879       which are not filled-up but computed from other diags ; In this case, the mate
2880       diag points to the primary (filled-up) diag to used for post processing.
2881     - Update Velocity-potential computation using post-processed diag framework.
2882     ==> Change the ordering of fields and time-periods in MDS output file
2883       when using periodic averaging: now writes one time record with the full set
2884       of fields for this time period, then the next time reccord (it used to be
2885       one field with the full set of time records then the next field).
2886         Note: this is now similar to NetCDF (MNC) output file. <==
2887    
2888    checkpoint62z (2011/06/21)
2889    o adjoint monitor:
2890     - Add adjoint monitor output for packages exf, seaice
2891       and update relevant testreport output
2892    o pkg/seaice:
2893     - re-order diags inits so that they appear in order in available_diagnostics.log
2894     - added diags: hsnow thermo. rates of change, area preceeding ridiging process,
2895       area/heff/hsnow preceeding thermodynamic growth/melt.
2896     - modified diag: SIdA; output actual effect, as the description states.
2897     - modified description: SIqneti, SIqneto, SIuheff, SIvheff, SIdAb*, HSNOW.
2898     - retired redundant diags: SIyneg, SIfice, SIsnwice, SIthdgrh.
2899       (SIyneg->SIdHbOCN; SIfice->SIdHbATC; SIsnwice->SIdHbFLO;
2900        and SIthdgrh->SIdHbOCN+SIdHbATC+SIdHbATO)
2901     - modified diags (2) : switch all SIdA*, SIdH*, SIdS* from delta to rates.
2902     - added diagnostics for seaice generic tracers (SItr*).
2903     - added SItrUnit and SItrNameLong run time param (for SItr* diags).
2904     - in diag names, replaced 'PrTh' abbrev. of 'preceeding thermo' with 'PT'.
2905     I. Fenty: 18-Jun-2011:
2906     Minor changes to seaice package:
2907     1) Retired old variables (A22, SEAICE_lhsublim, areaMax, areaMin, hiceMin) and
2908        added some new ones (SEAICE_area_reg, SEAICE_hice_reg, SEAICE_area_floor)
2909       - Differentiated "regularization variables" from "floor variables"
2910        * areaMin became SEAICE_area_reg (old A22) and SEAICE_area_floor
2911        * hiceMin became SEAICE_hice_reg (old hiceMin)
2912          (with _reg meaning regularization variable)
2913       - SEAICE_lhSublim becomes lhSublim, the sum of SEAICE_lhEvap and SEAICE_lhFusion
2914        so as to ensure energy conservation when going between phases
2915      - A22 was not used anywhere
2916     2) Changed regularization procedure for heffActual and hsnowActual to ensure
2917        well-boundedness and smooth adjoint in seaice_growth.F
2918     3) Fixed a bug where seaice_solve4temp would not recognize ice-free grid cells
2919        because the old regularization always set heffActual >= 0.05 cm
2920     4) Changed the model so that the default behavior is to put a small (10^-5) "floor"
2921        on AREA when HEFF > 0.
2922      - went from requiring ALLOW_PRECLUDE_INFINITESIMAL_AREA to be defined to
2923        requiring that DISABLE_AREA_FLOOR *not* be defined
2924     Affected verifications:
2925      - 1D_ocean_ice_column (output.txt output_adm.txt)
2926      - global_ocean.cs32x15 (output.seaice.txt output_adm.seaice.txt)
2927    o pkg/diagnostics:
2928      - move MNC code from diagnostics_out.F into new diagnostics_mnc_out.F (2 S/R).
2929      - rename S/R GETDIAG to DIAGNOSTICS_GET_DIAG and change type of 1rst argument
2930        (was _RL, now integer) with option = 0 to retrieve all levels.
2931      - add pieces of code to compute velocity potential at each level (new diagnostics
2932        PhiVEL, works only when UVELMASS & VVELMASS are also turned on);
2933        for now, using same params as CG2D (target-resisual, max Nb of iter ...).
2934      - fix few issues with counter diagnostics in diagnostics_setdiag.F &
2935        diagstats_setdiag.F (if diagnostic counter is itself a counter diag)
2936        and in diagnostics_fract_fill.F (do not need a valid pointer for the
2937        diagnostics counter-mate); check that definition of counter-diagnostic
2938        includes a valid counter-mate (in diagnostics_set_levels.F).
2939    o model/src (rStar):
2940      - add rStar scaling factor in diags_phi_hyd.F (similar to calc_grad_phi_hyd.F);
2941        affect solution only if z* with full pressure in EOS;
2942        update output of test-exp global_ocean.90x40x15.
2943    o pkg/seaice:
2944      - introduce siEps=1e-5 parameter
2945      - use areaMax in AREA update (part 4), consistent with ridging step (part 2.5).
2946      - re-organize SEAICE_ADD_SUBLIMATION_TO_FWBUDGET code.
2947      - introduce ALLOW_SITRACER and seaice_tracer_phys.F to handle generic seaice tracer.
2948        For now it covers, and was tested for, ice salinity and age (attached to HEFF),
2949        as well as ice cover age and ridging index (attached to AREA).
2950        For now the run time parameters (in data.seaice/SEAICE_PARM03) are
2951        SItrName (e.g. 'age') and SItrMate ('HEFF', which is the default, or 'AREA').
2952        Up to SItrMaxNum=3 tracers can be used simultaneously.
2953    o pkg/salt_plume:
2954      -introduce SPsalFRAC run time parameter that sets the fraction of the
2955       salt by-product of ice growth (SPsalFRAC*(1-SIsalFRAC)*salt typically)
2956       that gets vertically redistributed (fluxed down) by pkg/salt_plume.
2957    o model debug options:
2958      - Switch reading of debugMode from S/R INI_PARMS (parameter file "data", stored
2959        in PARAMS.h) to S/R EESET_PARMS (parameter file "eedata", stored in EEPARAMS.h).
2960      - Refine debug-msg printing selection (3 new levels):
2961        debugMode  : controls printing of debug messages (sequence of S/R calls).
2962        debugLevel : controls printing of algorithm-relevant auxiliary/debug messages
2963         debLevZero =  0 ; /* level of disabled aux. msg printing */
2964         debLevA =  1 ; /* level of minimum  aux. msg printing */
2965         debLevB =  2 ; /* level of low aux. print (report read-file opening)*/
2966         debLevC =  3 ; /* level of moderate debug prt (most pkgs debug msg) */
2967         debLevD =  4 ; /* level of enhanced debug prt (add DEBUG_STATS prt) */
2968         debLevE =  5 ; /* level of extensive debug printing */
2969        New debugLevel default: with default debugMode value (=F),
2970          = 2 (debLevB) or = 1 (debLevA) in case ALLOW_AUTODIFF is defined.;
2971          and if debugMode=T, default debugLevel = 4 (debLevD).
2972        Relation with previous settings:
2973         debLevB (=2) corresponds to former debLevA (=1)
2974         debLevD (=4) corresponds to former debLevB (=2)
2975        Note:
2976         a) if debugLevel=0, skip WRITE_GRID call when nIter0 > 0 (same as before);
2977         b) default debugLevel=1 is convenient in AD runs (avoid many file opening msgs);
2978            to recover previous default, set debugLevel=2 (e.g. AD-test hs94.1x64x5)
2979      - Add new parameter (printResidualFreq, read from PARM02 namelist) to print
2980        detailed CG solvers convergence; off (=0) by default, except if debugLevel=5.
2981    o pkg/obcs:
2982      - change OBCSfixTopo default from True to False (should not change the results);
2983        keep OBCSfixTopo=T in verification-exp. seaice_obcs.
2984    o pkg/thsice:
2985      - fix bug in thsice_calc_thickn.F (was introduced in version 1.18) in
2986        2nd layer seaice sublimation (unlikely to happen)
2987      - use Interior mask for OBCS in thsice_advection.F (similar to what is
2988        done in gad_advection & seaice_advection).
2989    o adjoint:
2990      bug fix spotted by Gael Forget:
2991      seaice_advection and thsice_advection still had
2992      legacy CPP options to avoid CS corner updates for adjoint
2993    o pkg/seaice:
2994      => Change some of the defaults (2011/05/29):
2995         - change SEAICEuseFluxForm default (from False to True)
2996         - change DIFF1 default (from 0.004 m/s to 0. m/s)
2997         And print warnings if DIFF1 is not set in data.seaice and centered
2998          avection scheme is used without any diffusion.
2999      also:
3000      - fix seaice_diffusion calls in default AdvScheme part of seaice_advdiff.F;
3001      - set SEAICEdiffKh[] default in the same way as SEAICEadvSch[]
3002      - stop if DIFF1<>0 with SEAICEadvScheme <> 2, if DIFF1<>0 with any
3003        other non-zero SEAICEdiffKh[] diffusivity, if SEAICEadvSalt=T with
3004        #undef SEAICE_VARIABLE_SALINITY, if SEAICEadvAge=T with #undef SEAICE_AGE.
3005      update results of test exp.:
3006         lab_sea: output.fd (switch to AdvScheme=33 with diffKh=20)
3007             output.hb87, output_adm.evp (SEAICEuseFluxForm=T and diffKh=200)
3008             output_adm.noseaicedyn (SEAICEuseFluxForm=T)
3009         offline_exf_seaice: output.seaicetd, output_adm (SEAICEuseFluxForm=T)
3010         seaice_obcs: output (SEAICEuseFluxForm=T)
3011      and prescribe old default for SEAICEuseFluxForm (=F) and DIFF1 (=0.004)
3012          for standard fwd & AD lab_sea tests (to keep the same output).
3013    o pkg/seaice/seaice_growth.F:
3014      - use Ian Fenty's capping formulas for actual ice
3015      thickness thoughout EVOLUTION branch.
3016      - put treatment pathological case #2) in CPP brackets
3017      (ALLOW_AVOID_INFINITESIMAL_AREA, undef by default).
3018      - update global_ocean.cs32x15 and 1D_ocean_ice_colum results accordingly.
3019    o pkg/seaice:
3020      - seaice_diffusion.F : remove the min(DX,DY) factor permanently;
3021      pass the Laplacian diffusivity (in m^2/s) diffKh as a parameter;
3022      also pass fac as a param, which can be 1. (to update the tendency
3023      field) or the time step (to update the field itself).
3024      - seaice_advdiff.F: for multidim, call seaice_diffusion with
3025      e.g. SEAICEdiffKhHeff and with fac=1; for single-dim, call
3026      seaice_diffusion with e.g. SEAICEdiffKhHeff and with fac=time step.
3027      - SEAICE_PARAMS.h, seaice_readparms.F, seaice_check.F :
3028      hooks to handle SEAICEdiffKhHeff, SEAICEdiffKhArea, etc.
3029    o pkg/seaice:
3030      diffusion with centered advection scheme (diffus.F & advect.F):
3031      - simplify S/R DIFFUS (put deltaT & DIFF1 factor outside, move EXCH outside)
3032        to just compute the laplacian of input-field.
3033      - unroll k loop (harmonic,biharmonic diff) in advect.F to save 1 exch call.
3034      - fix flux-form version in diffus.F to conserve tracer.
3035      update output of lab_sea.fd & lab_sea.hb87 (1rst set of modif affects
3036       machine truncation) and lab_sea.salt_plume (conservative flux-form modif)
3037    
3038    checkpoint62y (2011/05/26)
3039    o pkg/seaice:
3040     - seaice_growth.F : in EVOLUTION branch, always include
3041       a_QSWbyATM_cover in qnet (as it should be).
3042     - verification/global_ocean.cs32x15 : update results accordingly
3043       (output.seaice.txt output_adm.seaice.txt).
3044    o pkg/seaice + obcs:
3045     - use maskInW & maskInS in multi-dim advection and biharmonic diffusion:
3046       equivalent of assuming no tracer gradient outside the OB region.
3047       update output of seaice_obcs (uses DIFF1 <>0 => biharmonic diffusion)
3048     - remove calls to OBCS_COPY_TRACER after EXCH calls (no longer needed
3049       after changes above);
3050     - obcs+seaice cleaning: apply seaice-tracer OB values to tracer field
3051       only at OB location (instead of over a band of OLx width).
3052    o pkg/seaice:
3053     - fix wrong indices in old (non Flux-Form) diffusion default S/R diffus.F
3054       (dxG(I+1, ...) changed to dxG(I, ...), no impact on Lat-Lon grid)
3055    o pkg/obcs:
3056      - split header file "OBCS.h" into 4 separated files:
3057        OBCS_PARAMS.h, OBCS_GRID.h, OBCS_FIELDS.h & OBCS_SEAICE.h
3058       Note: OBCS_PARAMS.h & OBCS_GRID.h can be included without OBCS_OPTIONS.h
3059         (contain no conditional statement which depends on OBCS options).
3060      - move "useOBCSYearlyFields" from "data.obcs" (hold in OBCS_PARAMS.h)
3061        to parameter file "data.exf", namelist EXF_NML_OBCS (in EXF_PARAM.h).
3062    o ctrl, cost, grdchk & autodiff pkgs:
3063      - make options file more standard (like other {PKG}_OPTIONS.h file but
3064        with AD_CONFIG.h); clean-up some of the included header files.
3065    o pkg/obcs:
3066      - do not mask tracer when applying OB (tracer == 0 could generate problems)
3067      - apply tracer OB values to tracer field only at OB location (instead of
3068        over a band of OLx width)
3069      - clean-up obcs_apply_w.F & obcs_apply_eta.F (since less calls to these S/R)
3070      - remove OBCS_MULTIDIM_OLD_VERSION code in gad_advection.F and remove
3071        obcs_apply_tloc.F & obcs_apply_sloc.F
3072    o obcs in model/src:
3073      - call OBCS_APPLY_W only if NonHydrostatic.
3074      - call OBCS_APPLY_ETA only if NonLinFreeSurf.
3075      - reset dEtaHdt and wVel to zero outside OB interior region ;
3076      - leave tracer unchanged outside OB interior region: This has no effect
3077        on the solution but just to prevent unrealistic tracer value outside OB.
3078      - zero out velocity outside OB interior region: This has no effect on
3079        the solution but just to prevent unrealistic velocity outside OB.
3080    o obcs and non-lin free-surf:
3081       move call to OBCS_APPLY_R_STAR from update_r_star.F to calc_r_star.F
3082       and call to OBCS_APPLY_SURF_DR from update_surf_dr.F to calc_surf_dr.F
3083       + add argument "etaFld" to OBCS_APPLY_R_STAR & OBCS_APPLY_SURF_DR:
3084       this fixes missing EXCH + get consistent eta OB value (+ fix restart).
3085       update results of test-exp. exp4(nlfs).
3086    o exp4 (nlfs) test-exp:
3087       use OBC for Eta at Western & Eastern OB (to test prescribing Eta
3088       with NonLin-FreeSurf); update output.nlfs.txt
3089    o obcs and 2d/3d solver norm:
3090       use interior masks (maskInC) to cancel out cg2d & cg3d matrix coeff at OB
3091       and outside OB interior region (will allow to place OB further inside the
3092       domain). Depending on the domain, can affects cg2d-Norm (previous
3093       cancellation outside OB was only partial), e.g. in exp4 & obcs_ctrl,
3094       and cg3d-Norm (previous Norm was computed before canceling OB terms),
3095       e.g. in tutorial_plume_on_slope.
3096      - update output of exp.: exp4 (x2), obcs_ctrl and tutorial_plume_on_slope.
3097    o pkg rbcs:
3098      - split RBCS.h into 3 files: RBCS_SIZE.h, RBCS_PARAMS.h & RBCS_FIELDS.h
3099      - add capability to apply relaxation to horizontal velocity uVel & vVel.
3100    o pkg/grdchk: add gradient check for control variable xx_shifwflx
3101    o pkg/shelfice/shelfice_init_fixed.F
3102      fix CPP-flag combinations
3103    o pkg/seaice: Merge iceage code of Pierre Rampal
3104      * update/change/correct ice age calculations
3105      * add age updates for pathological cases
3106      Probably needs more testing...
3107    
3108    checkpoint62x (2011/05/13)
3109    o pkg/mom_vecinv:
3110       high-order vorticity scheme: use interior masks (maskInW & S)
3111       to zero-out (outside OB) gradient of vorticity.
3112    o verification exp.:
3113       turn on "useEnergyConservingCoriolis" (better discretisation) in exp.
3114       hs94.128x64x5 and seaice_obcs ; update results.
3115    o pkg/obcs:
3116      fix bug in OBeta for YZ sections in obcs_exf_load.F
3117    o pkg/ctrl, pkg/shelfice, and optim:
3118      - add new control variable xx_shifwflx (fresh water flux underneath ice
3119        shelves). This is almost as tedious as obcs-ctrl, because the
3120        variables needs its own mask.
3121      - add a cost function term that penalizes the deviation of xx_shifwflx
3122        from the first guess (zero) in analogy to other control variables
3123    o pkg/shelfice:
3124      - start basic adjoint
3125    o pkg/ctrl:
3126      - remove extra 2D field "for good measure" when initializing in
3127        ctrl_set_globfld_[xy/xz/yz].F
3128      - replace hard coded precision 32 (a bug) in ctrl_map_ini_gen by ctrlprec
3129      - improve error messages in ctrl_set_unpack_*
3130    o OBC implementation in momentum:
3131       use interior masks (maskInC,W & S) in momentum S/R:
3132       - multiply divergence, tension and some del^i.u or del^j.v by maskInC
3133       - multiply del2u,del2v by maskInW/S (biharmonic viscosity)
3134       - multiply horiz. grad of vorticity by maskInW/S (in Leith scheme)
3135       - multiply gradient of wVel by maskInW/S in del2w calculation (NonHyd)
3136       Motivation: fix/clean implementation of OBC with biharmonic-viscosity
3137        (and also with Leith/Smagorinsky harmonic-viscosity).
3138       Update output of experiment dome and exp4 (+nlfs).
3139    o exp4 test-exp:
3140      - turn on: nonHydrostatic, exactConserv, viscA4 (with momDissip_In_AB=F)
3141        and prescribe time-varying OB (without pkg/exf) for zonal-velocity
3142        at Western & Eastern Boundaries (+/- 1 per-cent); Also prescribe
3143        time-varying OB at Western-side for wVel (NonHyd); update output.
3144      - add secondary set-up (.nlfs) using NonLin FreeSurf (z*) + mom_vecinv
3145        and biharmonic-viscosity ; also use prescribed time varying OB.
3146    o pkg/obcs:
3147      fix bug in OBWeta,OBWeta indices in obcs_apply_r_star.F
3148    o model/src:
3149      - fix startTime setting when baseTime<>0 & nIter0=0 are specified ;
3150      - initialise startTime & nIter0 with unlikely values: allows to set one
3151        from the other without ambiguity.
3152    o seaice_obcs test-exp.:
3153      add small diffK4T,S to test biharmonic diffusivity with OBCS ; update output.
3154    o pkg/obcs:
3155      - remove calls to OBCS_COPY_TRACER after EXCH for T,S & pTracer:
3156        no longer needed with maskInC,W,S in pkg/generic_advdiff.
3157    o pkg/seaice:
3158      - retired SEAICE_SALINITY and SEAICE_salinity in favor of
3159        SEAICE_VARIABLE_SALINITY and SIsalFRAC, respectively.
3160      - fixed bug in the initialization of sea ice salinity variable HSALT
3161        in seaice_init_varia.F  (removed dependence on ICE2WATR)
3162    o fizhi-cs test exp.:
3163       switch reference output convention for these 2 non-standard test-exp,
3164        from: pgi  6.1-5 on faulks (FC.6, -of linux_ia32_pgf77+authors_fc5)
3165          to: ifort 11.1 on baudelaire (FC.13, -of linux_amd64_ifort11)
3166       reason: faulks might get retired soon and pkg/fizhi has still Pb with gfortran
3167    o model/inc:
3168      - change type of PmEpR array (from _RS to _RL) to fix restart (with "-use_r4")
3169        of exp. global_ocean.90x40x15 (Suncronous time-stepping + Real-FW + NonLin-FS)
3170    o pkg/seaice:
3171      - fix calculation of saltFlux and saltPlumeFlux when using SEAICE_SALINITY
3172    o verification/lab_sea, 1D_ocean_ice_column, seaice_obcs, global_ocean.cs32x15
3173      - updated output*.txt files due to bug fixes in salt, saltPlumeFlux,
3174        and initial HSALT
3175    
3176    checkpoint62w (2011/04/26)
3177    o pkg/mom_fluxform:
3178      - fix calculation of del2u & del2v (no-slip BC) when using Non-Lin Free-Surf.
3179      - use parameter "sideDragFactor" in no-slip BC side-drag part.
3180      - update output of exp. global_ocean.90x40x15
3181    o pkg/mom_vecinv:
3182      mask del2u & del2v (no effect on results, but cleaner & closer to mom_fluxform)
3183    o update seaice exp.:
3184      use more consistent parameter values (remove "backward compatability only":
3185       ICE2WATR, SEAICE_lhSublim, SEAICE_cpAir, SEAICE_rhoAir + set rhoConstFresh)
3186      related to thermodynamics seaice. Update output (fwd+AD) of exp.:
3187       1D_ocean_ice_column (x2), lab_sea (x8), ioffline_exf_seaice (x2) & seaice_obcs
3188    o update test-exp global_ocean.90x40x15:
3189      o use default CD_CODE_OPTIONS file (Adams-Bashforth on CD Mom & Coriolis).
3190      o increase Overlap size from 2 to 3 (to allow to test bi-harmonic Visc.)
3191      o new pickup-files from a 100.yr run with pkg/down_slope (input.dwnslp params)
3192      o turn on zStar & viscA4 in standard set-up (dir input/)
3193        and update output files: output.txt & output.dwnslp.txt
3194    o new AD-test experiment: obcs_ctrl
3195      (From Matt MITgcm_Contrib/SOSE/BoxAdj) to test OBCS as control vector.
3196    o pkg/dic:
3197      fix two bugs in handling water vapour pressure in carbonate chemistry
3198      and air-sea fluxes. Found by Val Bennington and Galen McKinley
3199      (add DIC Option = WATERVAP_BUG to recover old results)
3200      update output of tutorial_global_oce_biogeo (fwd+AD) & tutorial_dic_adjoffline
3201    o adding allowInteriorFreezing option to check for water below freezing point
3202      at depth and bring the negative heat anomaly to the surface level
3203    o pkgs _fields_load:
3204      - extend GET_PERIODIC_INTERVAL to deal with non-periodic case (from pkg/rbcs)
3205      - use new S/R GET_PERIODIC_INTERVAL in pkgs:
3206        bulk_force, cheapaml, cfc, dic, obcs (+ ctrl/ctrl_get_gen_rec), offline and
3207        rbcs to get interpolation weights and time reccord number.
3208      - fix multi-threading in aim_fields_load.F
3209      - apply EXCH to temp arrays [0,1] after reading in dic_fields_load.F
3210    o external_fields_load:
3211      new S/R GET_PERIODIC_INTERVAL to calculate which time-record (and linear
3212       interpolation weights) to use in a periodic time-series ; do not divide by
3213       time-step to convert to integer:
3214       - this fixes case where externForcingPeriod is not multiple of time-step
3215          (Thanks to Christopher L. Wolfe)
3216       - this fixes case where externForcingPeriod is an odd multiple of time-step
3217         (was wrong by half of time-step); update results of tutorial_global_oce_in_p.
3218      store index of time-record which is currently loaded:
3219       - works without any assumption on sequence of calls to EXTERNAL_FIELDS_LOAD ;
3220       - needed for the adjoint but not yet used because of extensive recomputations;
3221         (to be fixed soon)
3222    
3223    checkpoint62v (2011/04/02)
3224    o verification/1D_ocean_ice_column added to test Ian Fenty's
3225      pkg/seaice_growth.F modifications for improving sea ice code differentiability
3226    o update output of exp4, internal_wave, seaice_obcs, tutorial_plume_on_slope
3227      (new velocity statistics after changing maskInW & maskInS definition)
3228    o pkg/generic_advdiff with OBCS:
3229      use maksInW & maskInS in advective flux and in biharmonic diffusion calculation:
3230      equivalent to assumption of no tracer gradient outside the OB region.
3231      This will affect the results if using obcs+biharmonic diffusion.
3232      update output_adm.txt of experiment bottom_ctrl_5x5 (not expected since no obc)
3233    o pkg/obcs:
3234      change definition of maskInW & maskInS: leave OB edges inside (maskIn=1)
3235      (e.g., maskInW(OB_Ie)=1 ) so that velocity normal-component at OB is still
3236      in Interior region. No impact on solution but affects Velocity monitor stats.
3237    o pkg/ptracers (adjoint)
3238      New option AUTODIFF_PTRACERS_SPLIT_FILES for writing separate
3239      tape file for each tracer
3240    o model/inc/src and pkg/autodiff: add parameters that allow to turn
3241      of parts of the adjoint code at run time. For now, there are only
3242      useKPPinAdMode, useGMrediInAdMode, and useSEAICEinAdMode. These
3243      parameters are set in data.pkg.
3244      This is the lazy coward's version of doing this, but still useful for
3245      debugging. In order to do it right, everything needs to be moved to
3246      pkg/autodiff.
3247    o pkg/autodiff: fix global_sum_tile_ad.F by resetting adsumPhi at
3248      the end; this fixes the adjoint balancing code for open boundaries.
3249    o pkg/ctrl:
3250      - change behavior of xx_${varname}period to be analogous to exf-conventions:
3251        xx_${varname}period =   0.,  means time-independent control part
3252        xx_${varname}period = -12., means one-year-periodic monthly control part
3253      - introduce helper routine ctrl_init_rec (part of ctrl_init.F) to
3254        clean up ctrl_init a little, remove unused variables
3255      - ctrl_init: fixed the handling of the start/endrec for obcs-variables
3256      - move "call cal_GetMonthsRec" from s/r ctrl_get_gen to s/r ctrl_get_gen_rec
3257    
3258    checkpoint62u (2011/03/15)
3259    o model/src:
3260      - for the adjoint, change NonLin-FreeSurf initialisation sequence: fill-in
3261        h0Fac from INITIALISE_FIXED and reset hFac to h0Fac in INITIALISE_VARIA ;
3262      - in initialise_varia.F (except for ALLOW_DEPTH_CONTROL) remove 2nd call to
3263        INI_DEPTHS, INI_MASKS_ETC & INI_LINEAR_PHISURF.
3264    o pkg/ctrl/obcs/ecco:
3265      - remove obsolete, unused, and partially broken code:
3266        ctrl_obcsvol/ctrl_obcsbal/ctrl_volflux and code within
3267        ALLOW_CTRL_OBCS_BALANCE
3268      - put a stop statement into ecco/cost_obcsvol.F, but also add
3269        cost_obcsvol to ecco_ad_diff.list
3270    o pkg/ecco: fix counting cost function contributions for obcs (code
3271      by Matt M.) and diffkr for diagnostics
3272    o pkg/ecco, pkg/ctrl, pkg/grdchk:
3273      add cost penalty terms for initial uvel, vvel, eta controls
3274      and I/O for prior error files
3275    o pkg/mdsio:
3276       move mds_check4file.F from eesupp/src to mdsio_check4file.F ; add option
3277       (new argument) to check for tiled file in mdsioLocalDir : this fix the
3278       restart from pickup_som , pickup_dic (& dic_co2atm) with mdsioLocalDir.
3279    o pkg/ctrl:
3280     - ctrl_obcsbal.F, ctrl_obcsvol.F: replace last calls of ctrl_getrec by
3281       ctrl_get_gen_rec, put a stop statement into ctrl_getrec. Remove
3282       unused and superfluous variables
3283     - ctrl_get_gen_rec.F: catch the case of xx_genperiod=0.
3284    o pkg/ecco
3285     - enable adjoint of Stevens OB
3286    o pkg/ctrl/ecco/grdchk:
3287      - remove global declaration of tmpfldx/yz and tmpfldx/yz2.
3288        Fortunately, we do not have any tests for the numerous cpp-flagged
3289        option of "obcs as control parameters" so we will never know
3290        if this is an improvement (but at least now things compile).
3291      - remove an obsolete initialization from ecco_cost_init_barfiles.F
3292      - fix some problems within never used ifdefs to make the code compile
3293    o pkg/obcs:
3294     - Refine Interior mask definition to work with more complex OB (e.g.
3295       if OB_Ie < OB_Iw); In case default setting is not sufficient, allows to
3296       read in Interior mask from file. Check if Interior mask is consistent
3297       with OB list of indices.
3298    o pkg/seaice
3299     - beginning code for a seaice tracer package,
3300       but currently only used for seaice age: SEAICE_AGE
3301       SEAICE_num = 4
3302       iTracer = 1: area-weighted ice age
3303               = 2: volume-weighted ice age
3304               = 3, 4: template for one-year vs. multi-year ice
3305       data.seaice has new namelist SEAICE_PARM03 for arrays related to
3306       SEAICE_num
3307    
3308    checkpoint62t (2011/03/05)
3309    o pkg/obcs:
3310     - obcs_apply_uv.F: change to a 2 steps method, first tangential component;
3311       then normal component. This ensures that the normal component is set
3312       correctly even when it conficts with tangential setting from an other OB.
3313       Affects results of test-experiment seaice_obcs: update the output.txt
3314    o pkg/obcs:
3315     - add code to monitor statistics of dynamical fields at OB.
3316     - take OBCS_BALANCE code out of obcs_calc.F into new S/R OBCS_BALANCE_FLOW :
3317       - fix to OBCS_BALANCE code (right hFac ; deal with simple OB intersection).
3318       - change default: balance the Net inflow through all OB (instead of balancing
3319         each OB separately); keep the old method if setting OBC_balanceFacX < 0.
3320     - switch on useOBCSbalance in dome experiment: only correct Western OB outflow
3321       to match Nortern OB inflow (OBCS_balanceFacN=0).
3322    o pkg/seaice:
3323     - redefined actual sea ice age to be ICEAGE/HEFF ifdef SEAICE_AGE_VOL
3324    o pkg/seaice (seaice_growth v 1.113):
3325     - reverting seaice_growth to v 1.111 in order to have code with exact bit
3326       compatibility with MITgcm_contrib/ifenty/Fenty_seaice_thermo_code_merge
3327       CPP option SEAICE_OCN_MELT_ACT_ON_AREA removed in v 1.112 is reintroduced
3328       runtime flag SEAICEareaFormula is kept but is inactive
3329    o model/src:
3330     - add new param to scale curvilinear grid distance and area when using
3331       a different sphere radius from the grid-files.
3332     - test/check multi-threads EXCH applied to local variable (cg2d_x)
3333    o adjoint:
3334     - enable adjoint of Stevens OB
3335     - add dummy_in_dynamics to enable extraction of ADJrhoinsitu
3336       (a bit delicate because of potentially modified adj. common block structure;
3337       current switch is ALLOW_AUTODIFF_MONITOR_DIAG, could be changed later)
3338    
3339    checkpoint62s (2011/02/15)
3340    o pkg/seaice (seaice_growth v 1.112):
3341     - introduce SEAICEareaFormula run time parameter, which selects the recipe for
3342       computing the ice cover tendency from effective thickness tendencies. Include
3343       Ian Fenty's formula.
3344     - remove 'undef SEAICE_OCN_MELT_ACT_ON_AREA' which may now be achieved using
3345       SEAICEareaFormula.
3346     - simplify notations for the various d_HEFF/d_AREA terms.
3347    o pkg/gmredi:
3348     - add Boundary-Value-Problem bolus transport (Ferrari etal, OM 2010) code
3349       from Christopher Wolfe (UCSD); add partial cell factor in vertical derivative;
3350       add a verification test-run (front_relax.bvp) to test GM_useBVP.
3351    o pkg/seaice (seaice_growth v 1.111):
3352     - for SEAICE_DO_OPEN_WATER_GROWTH, replace Gael's implementation with Ian's.
3353     - the new SEAICE_DO_OPEN_WATER_MELT allows open-water air-sea heat fluxes to
3354       also melt ice.
3355    o pkg/seaice:
3356     - McPhee formula for Ice-Ocean fluxes (provided by Ian Fenty).
3357     - can be used by #define MCPHEE_OCEAN_ICE_HEAT_FLUX in SEAICE_OPTIONS.h
3358    o pkg/cheapaml:
3359     - from Nico Wienders: New version of this package.
3360    o pkg/flt:
3361     - add CPP options to prevent floats to re-enter the opposite side of
3362       a periodic domain (default: keep periodicity)
3363  o pkg/gmredi:  o pkg/gmredi:
3364   - apply exchange to GM_PsiX,GM_PsiY to get valid values near CS-corners   - apply exchange to GM_PsiX,GM_PsiY to get valid values near CS-corners
3365     (needed for multi-dim advection).     (needed for multi-dim advection).
3366     - switch on GM Advective form in global_ocean.cs32x15 and update output.txt
3367  o model/src:  o model/src:
3368   - fix wrong re-setting of addMass array (ALLOW_ADDFLUID) for atmospheric run.   - fix wrong re-setting of addMass array (ALLOW_ADDFLUID) for atmospheric run.
3369    o tutorial_tracer_adjsens
3370     - extend to NLFS and replace maskC by hFacC
3371       (change reference output accordingly)
3372    
3373  checkpoint62r (2011/01/24)  checkpoint62r (2011/01/24)
3374  o testreport:  o testreport:

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