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revision 1.1901 by jmc, Thu Jul 25 01:12:45 2013 UTC revision 1.2279 by jmc, Tue Oct 18 23:36:38 2016 UTC
# Line 4  $Name$ Line 4  $Name$
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    checkpoint66a (2016/10/18)
8    o pkg/bling:
9      - BLING package now loads in atmospheric pCO2 file using exf package routines
10        Enable with #define USE_EXFCO2 in BLING_OPTIONS.h
11    o model/src & pkg/ptracers:
12      - with INCLUDE_IMPLVERTADV_CODE defined, also call MOM_U,V_IMPLICIT_R &
13        GAD_IMPLICIT_R (instead of IMPLDIFF) when just implicitViscosity and
14        implicitDiffusion (respectively) are used (even without momImplVertAdv
15        or temp,salt,PTRACERS_ImplVertAdv).
16    o model/src & generic_advdiff:
17      - add parenthesis in main diagonal calculation of implicit vertical
18        diffusion matrix (impldiff.F & gad_implicit_r.F).
19        This affects results at machine truncation level; update output of many
20        verification experiments (31 fwd ; 10 adm ; 8 tlm ; 3 oad).
21    o pkg/mom_commom & generic_advdiff:
22      - add deep atmosphere and anelastic scaling factor in implicit vertical
23        advection routines (mom_u,v_implicit_r.F & gad*_impl*_r.F).
24    o model/src:
25      - remove few unnecessary temp array copies in solve_tridiagonal.F
26        & solve_pentadiagonal.F
27    
28    checkpoint65z (2016/09/28)
29    o pkg/seaice: fix multithreading for seaice_fgmres.F
30      - remove unecessary variables from common blocks
31      - use extra dimension MAX_NO_THREADS for all variables of the Krylov space
32        basis, that are stored in commom blocks (including integer variable i1)
33      - clean up code a little by removing commented lines that refer to
34        original code
35      - turn on multi-threaded test for experiment offline_exf_seaice.dyn_jfnk.
36    o MITgcm manual:
37      - add uptodate pkg/ecco documentation to the manual (section 8.1; ecco.tex),
38        preliminary documentation for generic controls (8.3; ctrl.tex),
39        a placeholder for smooth (8.4; smooth.tex), and comment out the deprecated
40        ecco_costfunction.tex
41    o pkg/ecco:
42      - update and cleanup list of CCP options
43      - re-assign gencost_mask to specify masks rather than gencost_errfile; 'c'
44        is now always passed to cost_generic; gencost_mask is now MAX_LEN_FNAM
45      - add checks that retired run-time options are not used, and in relation
46        to gencost_mask and gencost_errfile
47      - finish deprecating gencost_scalefile, gencost_smooth2Ddiffnbt, and
48        gencost_nrecperiod
49      - fix m_eta computation for virtual salt flux case
50      - add m_horflux_vol case (selected via gencost_barfile) that computes
51        transports via cost_gencost_boxmean (gencost_flag=-3)
52      - use gencost_flag more systematically (i.e., avoid using gencost_name)
53        for code switches (aside from physical variable selection)
54    o pkg/seaice: make seaice_fgmres.F fit for multithreading; this first
55      attempt appears to be a bit of a hack and my need some repair down the road
56    o pkg/exf:
57      - interpolation near South Pole: fix criteria on input field latitude.
58    o pkg/icefront & pkg/exf:
59      - move setting of icefront Sub-Glacial RunOff forcing (currently unused)
60        from pkg/exf (read from data.exf) to pkg/icefront (read from data.icefront)
61    o pkg/exf:
62      - replace CPP option ALLOW_EXF_OUTPUT_INTERP with run-time parameter
63        "exf_output_interp" (in namelist: EXF_NML_04); change output file name
64        (add suffix "_out" instead of a prefix); keep same record number as in
65        input file but always write record 1 first (to avoid a STOP in I/O S/R).
66        Change output file content by writing interpolated field before applying
67        land-sea mask (helpful for debug).
68      - 2 compon. vector interpolation with rotation: apply scaling factor on
69        each compon. (Eastward and Northward) just before rotation.
70    o pkg/bling:
71      - Cleaned package. Removed not needed code and comments.
72      - adjoint example now works
73        (MITgcm_contrib/verification_other/global_oce_biogeo_bling/code_ad)
74    o pkg/ptracers:
75      - add Bruno Deremble's code to complete the linear surface correction
76        for tracer conservation;
77      - enabled for individual ptracers by PTRACERS_linFSConserve(iTr)=.TRUE.
78    
79    checkpoint65y (2016/07/29)
80    o pkg/debug (stats):
81      - change GLOBAL_SUM to GLOBAL_SUM_TILE (result independent of tile to
82        proc/thread mapping);
83      - fix Min & Max for case where 1 thread has only empty tiles;
84      - use RL variable to count number of wet grid points (with big domain,
85        can be too large to fit into integer*4).
86    o pkg/monitor:
87      - use RL variable to count number of wet grid points (but used only for del2)
88      - add new routine to compute Advective CFL within tracer time-stepping with
89        writing delayed until next monitor output.
90    o pkg/obcs:
91      - fix bug in OBCS_BALANCE_FLOW (OBCS_balanceFacN misspelled OBCS_balanceFacW)
92    o pkg/cal:
93      - calandar-dump: treat case myTime < timePhase in the same way as in
94        eesupp/src/diff_phase_multiple.F (when not using calandar-dump).
95    o pkg/dic & seaice:
96      - fix compilation of ocean component for coupled atm+ocn model with
97        seaice dynamics & dic.
98    
99    checkpoint65x (2016/06/11)
100    o add a license text file in main MITgcm tree.
101    o added pkg/bling:
102      - intermediate complexity biogeochemical model
103      - see bling_description.txt for details
104      - verification experiment is global_oce_biogeo_bling (for now, in
105        Contrib/verification_other/); tested daily on baudelaire with gfortran.
106      - add entry point in pkg/gchem for new pkg "bling".
107    o pkg/seaice: fix tensile stength computation
108      - replace global field tensileStrength by tensileStrFac
109      - tensileStrFac can be computed once in S/R seaice_init_varia
110      - fortunately that does not affect any verification results
111    
112    checkpoint65w (2016/05/12)
113    o pkg/ctrl/ctrl.h: fix a comma in common block list, so that code compiles
114         with ECCO_CTRL_DEPRECATED defined
115    o verification/global_ocean.cs32x15:
116      - change secondary test "viscA4" to also test "selectP_inEOS_Zc=3"
117        with "selectNHfreeSurf=1".
118    o model/src (non-hydrostatic free-surface):
119      - More "natural" expression of NH free-surface term (case selectNHfreeSurf=1):
120        was: tmpSurf/(1+tmpSurf); changed to: 1/(1+Gamma) with Gamma=1/tmpSurf.
121      - Calculate surface vertical velocity after 2-D solver adjustment (accounts
122        for EmPmR if RealFreshWaterFlux); used in RHS (cg3d_b) if exactConserv
123        and used to compute dPhiNH (in post_cg3d.F) if selectNHfreeSurf=1.
124        This fixes EmPmR contribution when selectNHfreeSurf=1 & RealFreshWaterFlux.
125      - Update output (changes at machine truncation level) of verification exp:
126        exp4 (11 digits for cg2d), global_ocean.cs32x15.viscA4 (11.d),
127        short_surf_wave (13.d) and tutorial_deep_convection.smag3d (12.d).
128    o pkg/seaice: ITD code
129      - fix picking up from a single category model by initialising
130        heff/area/hsnowITD = 0. in seaice_itd_pickup.F
131      - split a long warning message in seaice_check_pickup.F into two lines,
132        because NEC SX-ACE cannot deal with the long line.
133    o model/src:
134      - fix missing dPhiNH in pressure_for_eos.F (case: selectP_inEOS_Zc=3)
135    o pkg/seaice:
136      - add missing checks for SEAICE_ALLOW_KRYLOV and SEAICE_ALLOW_BOTTOMDRAG
137    o pkg/seaice:
138      - add basal stress as parameterisation for grounding ice
139        following Lemieux et al. (2015)
140      - turn on by setting new parameter SEAICEbasalDragK2 to a value
141        larger than 0. Lemieux et al. (2015) recommend 15.
142      - The adjoint complains with extra recomputations so there is also a
143        new cpp-flag SEAICE_ALLOW_BOTTOMDRAG that is undefined by default in
144        order to postpone the problem
145      - compile the new code in lab_sea
146    o verification/halfpipe_streamice:
147      - update both TAF and OpenAD adm output (machine truncation differences)
148    
149    checkpoint65v (2016/04/08)
150    o verification/advect_xz:
151      - increase overlap size from 3 to 4 and add new secondary test for PQM
152        advection scheme (with mono & wino limiter).
153      - change main exp. to test PPM (with weno limiter) adv.scheme on Temp.
154    o model/src:
155      - new parameters "top_Pres" & "seaLev_Z" (replacing Ro_SeaLevel and recently
156        added phi0Ref) to set vertical axis origin and phiRef origin;
157        keep Ro_SeaLevel for backward compatibility (with a warning).
158       According to coordinate and fluid type:
159        OCN in Z: top_Pres(Ref) (=rhoConst*PhiRef(1)), seaLev_Z (=rF(1), @ the top)
160        ATM in Z: top_Pres(Ref) (=rhoConst*PhiRef(1)), seaLev_Z (=rF(Nr+1) @ bottom)
161        OCN in P: top_Pres (=rF(Nr+1)), seaLev_Z (= PhiRef(Nr+1)/g, @ the top)
162        ATM in P: top_Pres (=rF(Nr+1)), seaLev_Z (= PhiRef(1)/g, @ the bottom)
163      - remove Ro_SeaLevel from ATM experiment parameter files;
164      - in tutorial_global_oce_in_p, remove Ro_SeaLevel and set top_Pres to the
165        complement; update output.txt (changes at machine truncation level).
166    o pkg/seaice/seaice_evp.F
167      - simplify computation of deltaZ and zetaZ to simple averaging following
168        Bouillon et al. (2013). This removes a lot of code, but also changes
169        verification experiment lab_sea.hb87 -> updated
170    
171    checkpoint65u (2016/03/14)
172    o pkg/generic_advdiff:
173      - from Darren: add PPM and PQM advection schemes (number 40-42 and 50-52)
174        with 2 types of limiter (see: Engwirda & Kelley, submit. to JCP);
175        Note (from Darren): unlimited PPM/PQM scheme (40 & 50) are just for
176        testing and not for actual use.
177    o model/src:
178      - add parameter "phi0Ref" to specify reference [pressure/geo] potential at
179        origin r = rF(1);
180      - add options (parameter selectP_inEOS_Zc) to select which pressure to use
181        in EOS for height coordinate: enable to include NH Pressure or to use
182        more accurate pressure vertical profile; options not linked to EOS type
183        (as previously, e.g., JMD95P/JMD95Z) but set default according to EOS type;
184      - start to implement variable gravity (along vertical): for now, only with
185        z-coords (not even z*).
186      - add Ideal Gas equation of state for height coordinate.
187      - update OpenAD output (affected at machine truncation level) of exp:
188        global_ocean.90x40x15, OpenAD (std) and tutorial_global_oce_biogeo.
189    o pkg/exf:
190      - add ALLOW_EXF_OUTPUT_INTERP cpp switch to output the result
191        of exf interpolation (before any rescaling, rotation or interpolation
192        to velocity point) for each field that gets loaded from file. This option
193        identically mimics the input file organization (e.g. record numbers in year
194        by year input files) besides the change in horizontal grid.
195      - add rotateStressOnAgrid run-time switch so that wind stress fields
196        can be provided on the A-grid in zonal/meridional direction and
197        rotated on the fly. This only applies to the case when the exf
198        interpolation is off and rotateStressOnAgrid is false by default.
199    o model/src:
200      - rename internal parameter "useDynP_inEos_Zc" to "storePhiHyd4Phys" (since
201        it's also used with pkg/atm_phys) and add few more parameters (but still
202        inactive, src code yet to come)
203    
204    checkpoint65t (2016/02/10)
205    o pkg/atm_phys:
206      - from Ruth Geen: add optical depth dependence on CO2 concentration.
207    o model/src:
208      - fix vertical inter/extra-polation of density factor rhoFacF (for anelastic)
209        for the case setCenterDr=T (delRc set from "data"); add output of rhoFacC&F.
210        Update output of exp. deep_anelastic (changes at truncation level).
211    o tools:
212      - add a hack in "remove_comments_sed" (used only with TAF) for recent
213        version of OpenMPI (shipped with FC.23): comment out the new header
214        file "mpif-sizeof.h" which causes problems to TAF.
215    o pkg/seaice:
216      - change the termination criterion so that maxits (SEAICElinearIterMax)
217        has an effect
218      - unify iteration parameters for implicit solvers (JFNK and Picard)
219        SEAICEnonLinIterMax replaces SEAICEnewtonIterMax/NPSEUDOTIMESTEPS
220        SEAICElinearIterMax replaces SEAICEkrylovIterMax/SOLV_MAX_ITER
221        SEAICEpreLinIterMax replaces SOLV_MAX_ITER in preconditioner
222        SEAICEpreNL_IterMax replaces NPSEUDOTIMESTEPS in preconditioner
223        SEAICEnonLinTol     replaces JFNKgamma_nonlin
224      - remove S/R SEAICE_FGMRES_DRIVER and put content into S/R SEAICE_JFKN
225      - add new Picard-Krylov solver, compile with SEAICE_ALLOW_KRYLOV and
226        use with SEAICEuseKrylov
227    o pkg/seaice/seaice_lsr.F
228        fix small bug: replace zetaZ by zetaZloc in S/R seaice_lsr_rhsu/v; only
229        relevant if SEAICEuseStrImpCpl=T, and even then it does not seem to have
230        an effect.
231    o pkg/seaice: add two new parameters
232      - SEAICEuseLSR to simplify the logic in seaice_dynsolver (this
233        parameter is not in any namelist)
234      - SEAICEusrPicardAsPrecon to allow s/r seaice_lsr to be used as
235        a preconditioner for the non-linear Newton iteration of the JFNK
236        solver
237    o pkg/seaice/seaice_lsr.F: replace 1./SEAICE_deltaTdyn with recip_deltaT,
238      affects some experiments at truncation level:
239      - global_ocean.cs32x15.icedyn (11 digits),
240      - global_ocean.cs32x15.seaice (11 digits),
241      - seaice_itd (12 digits), seaice_itd.lipscomb07 (12 digits) -> update
242      - also update global_ocean.cs32x15 adjoint and tangent-linear results
243    o pkg/salt_plume & pkg/thsice:
244      - for coupled  set-up with pkg/thsice in ATM and pkg/salt_plume in OCN,
245        connect salt_plume flux to ATM-OCN coupling pkgs interface:
246       a) in ATM: also cumulate salt-plume flux in S/R THSICE_SALT_PLUME (for
247         export to coupler interface) even without compiling pkg/salt_plume ;
248       b) in OCN: apply coupler salt-plume flux to pkg/salt_plume field
249         (saltPlumeFlux) just before exch call, in S/R SALT_PLUME_DO_EXCH.
250    o pkg/dic:
251      - use the updated seaice fraction (from seaice pkgs) for DIC forcing
252        instead of the previous time-step value ; done in new S/R DIC_FIELDS_UPDATE
253        called from the top of dic_biotic_forcing.F (instead of in DIC_FIELDS_LOAD);
254      - move also update with values from ATM-OCN Coupler in the same new S/R
255        (previously done in ocn_apply_import.F).
256    o tools/adjoint_options:
257      - specify explicitly "-f77" or "-f90" in default ad-optfile since TAF (default)
258        has been changed on Jan 14, 2016.
259    o pkg/ggl90:
260      - add alternative discretisation of vertical shear (off by default), to
261        compute the mean (@ grid-cell center) of vertical shear compon instead of
262        vertical shear of mean flow (@ grid-cell center).
263      - add correct parenthesis in ALLOW_GGL90_SMOOTH code to get the same truncated
264        results on adjacent faces of cubed-sphere grids; this fix the restart.
265    o pkg/atm_compon_interf:
266      - skip time-ave over cpl_atmSendFrq of Sea-Level Pressure (atmSLPr) and just
267        pass last value, stored directly before export to CPL ;
268        Note: this affects results of Coupled set-up where OCN uses useImportSLP=T
269      - remove atmSLPr from pickup files (no longer needed for restart)
270    
271    checkpoint65s (2016/01/13)
272    o eesupp & genmake2:
273       - first check for Function ETIME and, if it fails, then check for subroutine
274         ETIME and consistent output; use the appropriate version in timers.F
275    o model/src:
276      - to check restart test, add option to apply EXCH to U,V earlier, just before
277        integr_continuity; turned off by default.
278    o pkg/dic:
279      - remove CPP option USE_ATMOSCO2 (not needed)
280    o tools/tst_2+2:
281      - try to ignore difference between +0 and -0 in binary file, causing test
282        to fail for no good reason.
283    o eesupp & genmake2:
284      - put back modif from Jinxuan Zhu - change etime fct call to S/R call -
285        but also check (in genmake2) that test runs and returns meaningful results.
286    o coupler pkgs:
287      Finish implementation of optionally-exchanged variable switches (started on
288       Nov 12) with addition of few more exchanged fields, including 2-way exchange
289       of pkg/thsice vars to allow to use seaice dynamics (from pkg/seaice) & seaice
290       advection in OCN component; this requires sequential coupling.
291      coupler (pkg/atm_ocn_coupler):
292      - add argument msgUnit and iter number to CPL_SEND/RECV_ATM/OCN_FIELDS
293        routines (useful for debug).
294      - only export/import optionally exchanged fields (RunOff, seaice, Salt-Plume
295         flux, DIC fields) if corresponding switch is ON.
296      - add option to export RunOff to OCN (to use for DIC river input)
297      - add 2-way thSIce vars exchange; check for consistent cpl_sequential setting.
298      components (pkg/atm_ & ocn_compon_interf):
299      - to save memory space in ATM & OCN comp: add some #ifdef ALLOW_${PKG} around
300        optionally exchanged fields; add a check & stop in cpl_readparms.F.
301        ATMCPL.h: ALLOW_LAND for RunOff, ALLOW_THSICE for seaice, ALLOW_AIM for CO2;
302        OCNCPL.h: ALLOW_SALT_PLUME, ALLOW_DIC for DIC, ALLOW_THSICE for 2-W thsice.
303      - rename:   fracIce     -> sIceFrac_cpl (<- match coupler var name)
304        + in ATM: fracIceTime -> sIceFracTime ; seaIceTime -> sIceMassTime.
305      - add 2-way thSIce vars exchange ; add Salt-Plume flux ; add RunOff in OCN.
306      - hold in common block coupler optionally-exchanged variable switch
307        and set default "useImportXXX" accordingly; + check & stop if inconsistent.
308      - add diagnostics for all imported fields from coupler (in both OCN & ATM);
309        this is intended to replace the OCN cplFldtave.* output files (not updated
310        to contain new additional exchanged fields).
311    o pkg/dic:
312      - fix an other bug (also from 2014/08/30) in dic_atmos.F, in dic_int1=3 code.
313    o pkg/thsice:
314      - when coupled to ATM (useCoupler) with thSIce_skipThermo=T, skip reading
315        and writing of thsice pickup files.
316    o pkg/atm_compon_interf:
317      - move all field individual export-call out of cpl_export_import_data.F
318        into new S/R ATM_EXPORT_FIELDS
319    o pkg/atm_compon_interf:
320      - store state variables (for now, only thSIce fields) just before beeing
321        exported (in cpl_export_import_data.F, like on ocean side) instead of from
322        atm_store_my_data.F like all exported fluxes.
323      - new version of pickup_cpl: write field names into meta file and read meta
324        file to find field postion in pickup. Also only write/read fields meeded for
325        restart (same logic as main pickup file ; also using pickupStrictlyMatch)
326    o pkg/dic:
327      - fix bug (added on 2014/08/30) in dic_atmos.F for the case dic_int1= 2 or 3.
328    o pkg/seaice: add new parameter SEAICEpressReplFac to choose between
329        pressure replacement method (=1., default) or original Hibler (1979) (=0.)
330        value can be from domain [0,1] to average between the two methods
331    o pkg/atm_phys:
332      - allow to provide 2-d map of albedo and mixed-layer depth from files (but
333        hold fixed in time).
334    
335    checkpoint65r (2015/12/21)
336    o pkg/seaice:
337        fix bug in tridiagonal solvers for SEAICE_OLx/y>0, this affects the JFNK
338        solver (offline.dyn_jfnk) and global_ocean.cs32x15.seaice -> updated
339    o pkg/seaice:
340      - fix a bug in computing areaS in (J-J -> J-1) that affects runs
341        when SEAICEscaleSurfStress=.TRUE.,
342      - apply areaW and areaS in S/R seaice_calc_lhs
343    o pkg/atm_phys:
344      - add diagnostics for 3-D, Nr+1 levels diagnostics of radiative fluxes
345        (shortwave & longwave, net & downward) and diagnostics of temp. tendency
346        for individual contribution (convection, LSC cond, radiation)
347      - add Ruth Geen etal, GRL 2016, radiation options (see paper supp.
348        information); activated with: solar_exponent=0. and wv_exponent=-1.
349    o pkg/ggl90:
350      - within IDEMIX add upper limit for horizontal group velocity to
351        avoid instability problems in the explicit horizontal diffusion term for
352        long time steps or high resolution
353    o pkg/diagnostics:
354      - simplify setting of local-array size in diagstats_output.F: uses "numLevels"
355        (from DIAGNOSTICS_SIZE.h) to allow to write out more than Nr levels.
356    o testreport:
357      - remove "-v" (verbose option) in default mpirun command.
358    o pkg/seaice/seaice_growth:
359      - catch potential division by zero in ITD code, does not change
360        verification results
361    o pkg/ecco:
362      - retire old codes to the Attic. The calls to retired functions are
363        left in a commented form in case they ever need to be re-activated.
364      - ecco_check.F: issue warning if any old CPP option is
365        defined that corresponds to retired codes -- then stop.
366    o pkg/atm_compon_interf:
367      - change seaice fraction (use for OCN dic surf.flux) stored and sent to
368        coupler: use last time-step value instead of average over cplSendFrq_iter
369        time-step, similar to what is done for seaIceMass.
370        This will affect results (pkg/dic) of coupled ATM-OCN+dic set-up.
371    o eesupp & genmake2:
372      - from Jinxuan Zhu: change etime fct call to S/R call (fix gfortran ETIME);
373        <= remove until a fix is found for some ifort version on ia32 machine.
374    o pkg/seaice/seaice_evp:
375      - refine residual computation
376    
377    checkpoint65q (2015/11/18)
378    o pkg/seaice/seaice_evp:
379      - fix residual computations so that they no longer affect the actual
380        simulation code
381      - fix seaice_readparams to be able to actually set new parameters
382        SEAICEaEVPcStar and SEAICEaEVPalphaMin, also fix logic a little
383    o model/src:
384      - fix wrong truncation (single prec) from "FLOAT" function in expressions
385        like: deltaT*FLOAT(myIter) when myIter is large:
386         a) replaced by DFLOAT (if not seen by TAF);
387         b) remove "FLOAT" and use implicit type conversion (if seen by TAF).
388    o pkg/aim_v23:
389      - write/read the expected CO2 pickups (from S/R AIM_DO_CO2): fix reading
390        when pickupSuff is set ; do write rolling pickups + at the end of the run.
391    o pkg/atm_ocn_coupler + ocn_compon_interf:
392      - in prep for using pkg/seaice Dyn in coupled set-up, implement sequential
393        coupling option-1: ATM -(cpl)-> OCN and then OCN -(cpl)-> ATM ;
394        add corresponding call in DO_OCEANIC_PHYS.
395    o coupler pkgs:
396      Start a new way to set-up optionally-exchanged variables (previously, only
397       there for exchange_DIC): switch on/off from 1 place, at run-time, in coupler
398       data.cpl (new) instead of at compile time in ATMIDS.h & OCNIDS.h ;
399       send switch to ATM & OCN compon before reading their own "data.cpl" (so that
400       compononent param default can be set accordingly).
401      Note: this new switch (cpl_exchange_[xxx]) is not a per variable switch
402       but rather applies to a group a fields (going both ways like for DIC)
403       and corresponds to an option of coupling config.
404      coupler (pkg/atm_ocn_coupler):
405      - change parameter file from "data" to "data.cpl" (in cpl_read_params.F),
406        and read namelist directly (without eessup S/R calls) instead of
407        in the very un-flexible old way, 1 param per line, in fixed order;
408      - add error-counter to track errors (e.g., missing "data.cpl") and to stop
409        cleanly in CPL_CHECK_CPLCONFIG
410      - add new coupling-exchange selectors (some not yet active) including
411        cpl_exchange_DIC (to set to 3 to replace atmCpl_exchange_DIC=T in ATMIDS.h
412                                             and ocnCpl_exchange_DIC=T in OCNIDS.h);
413      - add 2 new S/R (CPL_SEND_ATM/OCN_CPLPARMS) to send coupler-params to each
414        component ; called directly from coupler.F, after comp. registrations;
415      - rename few variable-ID names (in ATMIDS.h & OCNIDS.h):
416         atm/ocnSeaIceName --> atm/ocnSIceMassName ; atm/ocnFCO2Name ->
417          -> atm/ocnCO2FluxName ; atm/ocnWSpdName --> atm/ocnWindSpdName
418      components (pkg/atm_ & ocn_compon_interf):
419      - add ATM/OCN_CPL_OPTIONS.h in component pkgs and include the corresponding
420        CPP header file in all pkg source files.
421      - move checking of comp. configs out of cpl_exch_configs.F into new S/R
422        ATM/OCN_CHECK_CPLCONFIG;
423      - add error-counter to track errors (e.g., in "data.cpl") and to stop
424        cleanly in ATM/OCN_CHECK_CPLCONFIG;
425      - add new S/R CPL_IMPORT_CPLPARMS to import coupling-exchange selectors
426        from coupler ; called from initialise_fixed.F, after PACKAGES_BOOT and
427        before PACKAGES_READPARMS;
428      verification/cpl_aim+ocn/:
429      - update ATMIDS.h & OCNIDS.h (in shared_code) and use new parameter file
430        "data.cpl" for coupler (in input_cpl).
431    o eesupp/inc:
432      - change the MPI-global-sum default (in CPP_EEOPTIONS.h) to:
433        #define GLOBAL_SUM_ORDER_TILES (only affects MPI built of global_sum_tile.F)
434        to always cumulate tile local-sum in the same order (still uses
435        MPI_Allreduce like standard code).
436      - in verification experiment code, remove local CPP_EEOPTIONS.h_mpi files
437        that are now identical to standard version (in eesupp/inc).
438    o pkg/shelfice:
439      - add SHELFICETransCoeffTFile for initializing spatially varying
440        heat and salt transfer coefficients
441    o pkg/atm_compon_interf & ocn_compon_interf:
442      - combine into 1 (new) S/R CPL_EXPORT_IMPORT_DATA the two previous
443        S/R CPL_EXPORT_MY_DATA & CPL_IMPORT_EXTERNAL_DATA
444      - move bi,bj loops inside S/R OCN_STORE_MY_DATA
445    o pkg/atm_ocn_coupler:
446      - initialise to zero ATMVARS.h & OCNVARS.h arrays.
447    o pkg/rbcs:
448      - select RBCS-mask for Temp & Salt the same way as for pTracer ; this allows
449        to compile with maskLEN=1 when all tracers use the same RBCS-mask.
450      - add a short report (to STDOUT) about RBCS-mask settings.
451    
452    checkpoint65p (2015/10/23)
453    o pkg/seaice/seaice_evp.F: fix store directives and key computations, since
454        there is no adjoint test for EVP, we don't know what it does to the adjoint
455        solution, but at least there are no more recomputation warnings left
456    o pkg/seaice/seaice_evp.F: slight modification of averaging so that EVP stands
457        a chance of giving the same results as a fully converged VP (JFNK) solver
458    o tools/adjoint_options/adjoint_diva:
459      - fix bug (typo) in Tang-Linear FLAGS setting for MPI + DIVA
460    o pkg/streamice:
461      - spotted bug in streamice_driving_stress using dyG where should have been dxG
462    o pkg/exf:
463      - remove STOP statement that prevented to use wind or (wind-)stress
464        interpolation for constant-in-time forcing fields (wind/stress period = 0).
465    o pkg/seaice:
466      - replace SEAICE_EVP_USE_ADAPTATION by run time parameters, requires
467        5 additionals 2D fields and 6 new store directives
468      - change logic in seaice_readparms.F: EVP code can now be turned on in
469        various ways, setting SEAICE_deltaTev is no longer required,
470        alternatively set SEAICE_evpAlpha/Beta, SEAICEuseEVPstar, SEAICEuseEVPrev,
471        or SEAICEaEVPcoeff
472    o pkg/shelfice/shelfice_thermodynamics.F
473      - redefining uLoc/vLoc to u/v, instead of 2u/v
474    o pkg/seaice/seaice_evp.F: introduce "adaptive EVP" by Madlen Kimmritz
475      - this is an intermediate state of a truely converging EVP that has
476        the potential of outperforming implicit VP methods, I do not recommend
477        using it yet.
478      - for now, "adaptive EVP" is turned on by setting SEAICE_EVP_USE_ADAPTATION
479        and all parameters are hardwired
480      - for convergence it still requires very smooth regularisations, that means,
481        if SEAICE_DELTA_SMOOTHREG is defined, deltaCreg=deltaC+deltaMin, which is
482        different from the VP case with deltaCreg=sqrt(deltaC**2+deltaMin**2); also
483        specific averaging appears to be required, still subject to tuning
484      - still needs cleaning and I need to turn parameter into runtime parameters
485      - add code to compute and print residuals of iteration, compile with
486        defining ALLOW_SEAICE_EVP_RESIDUAL to enable it
487    o pkg/seaice/seaice_evp.F: fix a bug (factor of four in front of e12Csq)
488      that entered with r1.54 on Sep04, 2015, -> update results
489    
490    checkpoint65o (2015/09/14)
491    o pkg/mom_vecinv & mom_common:
492      - add deep-atmosphere geometry factor in mom_calc_visc.F + in routines
493        called from there.
494      - add anelastic and deep-atmosphere geometry factor in pkg/mom_vecinv ; this
495        allows to use Vector-Invariant form in deep atmos and anelastic formulation
496    o pkg/seaice: introduce fast ice parameterisation following Itkin et al. (2015)
497      and Koenig-Beatty+Holland (2012)
498      - two new parameters SEAICE_tensilFac and SEAICE_tensilDepth
499      - global 2D field tensileStrength, computed in seaice_calc_ice_strength
500      - requires an extra input argument for S/R seaice_calc_viscosities
501      - tensileStrength's depth dependence is different from Itkin et al. (2015)
502        (to be changed and played with, for now exponential)
503    o pkg/seaice: introduce new parameter SEAICEscaleSurfStress (default = .FALSE.)
504      - if TRUE scale ice-ocean and ice-atmosphere stress acting on sea ice
505        by AREA according to Connelly et al. (2004), JPO.
506      - For EVP and the LSR solver, the implicit part of the drag term is
507        the only non-zero term in the denominator when there is no ice (which
508        prevented running the model with zero ice-ocean drag). If
509        SEAICEscaleSurfStress = .TRUE., this results in a division by zero
510        (or zero main diagonals BU/BV) which need to be caught. A practical
511        consequence is that for open water, the momentum equation reduce
512        to trivially 0 = 0 + 0 (for EVP). For LSR, BU/BV are reset to 1, if
513        they happen to be zero, often leading to a non-zero solution over
514        open water.
515    o pkg/seaice: revise EVP code (seaice_evp.F) in preparation for a more
516        efficient EVP method.
517      - introduce area-weighted averages for e12 (analogously to
518        seaice_calc_viscosities.F); this totally changes lab_sea.hb87 (2 digits
519        remain, but also changing the order of terms in the previous average
520        changed the results as much) -> update experiment
521      - add SEAICE_DELTA_SMOOTHREG code
522      - disentangle computation of zetaC/deltaC and zetaZ/deltaZ, also for
523        TEM-code
524      - adjust loop bounds so that only required fields are computed
525      - add new averaging code for zetaZ/deltaZ (again similar to
526        seaice_calc_viscosities.F), inactive by default for now (will change
527        results again), but will replace old code eventually
528    o eesupp/src:
529      - add an other alternative for multi-proc GLOBAL_SUM (in global_sum_tile.F)
530        to always cumulate tile local-sum in the same order
531        (option #define GLOBAL_SUM_ORDER_TILES in CPP_EEOPTIONS.h).
532        Still uses MPI_Allreduce (like standard code) but on array of tiles
533        and should be faster than GLOBAL_SUM_SEND_RECV code.
534      - switch almost all verification experiments that use GLOBAL_SUM_SEND_RECV
535        (defined in CPP_EEOPTIONS.h_mpi) to GLOBAL_SUM_ORDER_TILES instead.
536      - add CPP_EEOPTIONS.h_mpi with GLOBAL_SUM_ORDER_TILES defined in 14 more exp.:
537         aim.5l_cs, cheapAML_box, deep_anelastic, dome, fizhi-cs-32x32x40,
538         fizhi-cs-aqualev20, fizhi-gridalt-hs, global_ocean_ebm, matrix_example,
539         natl_box, solid-body.cs-32x32x1, tutorial_advection_in_gyre,
540         tutorial_baroclinic_gyre and tutorial_held_suarez_cs.
541    
542    checkpoint65n (2015/07/29)
543    o pkg/thsice:
544      - add a warning when used with pkg/aim but without updating SST
545        (stepFwd_oceMxL=F & useCoupler=F & tauRelax_MxL<>-1 ).
546    o pkg/offline:
547      - change where Offline-Fields are loaded, from load_fields_driver.F to
548        directly within FORWARD_STEP, just after updating iter number and time;
549      - move setting of GM and KPP diffusivity out of OFFLINE_FIELDS_LOAD into new
550        S/R OFFLINE_GET_DIFFUS that is called towards the end of DO_OCEANIC_PHYS;
551       These changes allow:
552        a) to recover exactly on-line results using deltaToffline=deltaTClock,
553        tested (using offlineIter0= nIter0 -1 and offlineTimeOffset= -deltaT/2)
554        both with Lin & Non-Lin Free-Surf, both with staggerTimeStep & synchronous
555        time-step, both with GM & KPP files and with recomputing these fields;
556        b) no needs to switch on staggerTimeStep anymore;
557        c) simplify rescaling of offline horiz. velocity with Non-Lin Free-Surf.
558      - update output of experiment tutorial_dic_adjoffline (only 3 digits left).
559    o pkg/offline:
560      - change (rarely used) offset-iteration parameter to an offset time (in s):
561        can easily recover previous offset-iter effect by setting offset-time
562        (offlineTimeOffset) to offset-iter x deltaToffline;
563      - do not turn-off Temp & Salinity surface relaxation when using KPP (used
564        in KPP as part of surface buoyancy forcing) in offline run.
565      - fix ptracers KPP non-local term in the case where KPP is re-computed.
566    o OpenAD
567      - Adding preliminary ggl90 test to OpenAD verification.
568        Config. with ggl90 currently diverges after 64 time steps
569        so will need more work to become more stable
570      - Adding preliminary kpp test to OpenAD verification.
571        required small tweakes in kpp_routines.F
572      - Merge and update from Krishna Narayanan's contrib area:
573        * Add one variable for preliminary OpenAD DIVA
574        * Add replacement time-stepping for OpenAD DIVA
575        * genmake2 flag -diva (but only for OpenAD; preliminary)
576        * required modifs for OAD_support
577        successful preliminary test for tutorial_global_oce_biogeo/
578    o pkg/seaice:
579      - initialise deltaC in seaice_lsr, cosmetic changes in seaice_lsr
580      - add cpp-flag SEAICE_DELTA_SMOOTHREG for option of regularising
581        delta with a smooth function in s/r seaice_calc_viscosity
582        (no effect on EVP)
583      - rename local suffix "sqr" into "sq" for more consistent variable names
584    o pkg/seaice:
585        add new parameter SEAICE_deltaMin that is used ***only***
586        for regularizing Delta (and nothing else, like the parameter
587        which is also used for all sorts of things SEAICE_EPS).
588        Defaults to SEAICE_EPS for backward compatibility only.
589    o pkg/seaice: replace erroneously storing e12Csqr on the wrong tape with
590        the wrong key by inialising it before use -> fixes a recomputation
591        problem but does not fix the gradient
592    o pkg/layers:
593      - move resetting of flux arrays to outside the iLa loop
594        (this caused layers_diapycnal to not work with more than one layer coord.)
595      - fix bug in calculation of layers_recip_delta in layers_init_fixed.F
596    o pkg/layers:
597      - remove from common block 3D layers fields (used to diagnose transport
598        in tracer coords) and declare them as local arrays in layers_calc.F
599    o pkg/seaice:
600      - Rename SEAICE_VECTORIZE_LSR_ZEBRA to SEAICE_LSR_ZEBRA and define it
601        in lab_sea forward experiment (changes results -> updated)
602      - update adjoint experiment lab_sea after cleaning up seaice_lsr_tridiagu/v
603    o pkg/seaice: modify seaice_lsr.F in order to improve the gradient
604       computations; for SEAICE_VECTORIZE_LSR
605      - move the loops over which the tridiagonal solvers (seaice_lsr_tridiagu/v)
606        sweep to the outside,
607      - remove store directives and add "CADJ loop sequential" directives
608        in analogy to model/src/solve_tridiagonal.F
609      - replace many "#ifdef SEAICE_VECTORIZE_LSR_ZEBRA" by variable loop
610        boundaries to yield more readable code. This has also the charming side
611        effect that your can use SEAICE_VECTORIZE_LSR_ZEBRA without
612        SEAICE_VECTORIZE_LSR (i.e. adjoint without recomputations in
613        seaice_lsr_tridiagu/v now requires either of these flags, vectorization
614        still requires SEAICE_VECTORIZE_LSR with SEAICE_VECTORIZE_LSR_ZEBRA as
615        an additional option)
616       The tridiagonal solvers are now completely analoguous to solve_tridiagonal.F
617       but the adjoint gradients (which are affected by this change) still explode.
618    o coupler (atm & ocn _compon_interf):
619      - avoid using Exch2 IO mapping if not suitable.
620    
621    checkpoint65m (2015/06/15)
622    o pkg/layers:
623      - clean-up old parameters setting (from Sep 2012):
624        + remove old parameters setting from common block (declared locally);
625        + stop if any old parameter is mixed with new parameters;
626        + check for valid or consistent parameter setting (e.g., layers_name)
627      - check that layers_bounds for Pot.Density are in the right range;
628        this is supposed to catch un-updated setting after recently shifting
629        potential density field "prho" by -1000 (now in "sigma" scale).
630    o pkg/layers:
631      - Added missing call to layers_fill for keeping track of tottend in
632        pkg/diagnostics/diagnostics_fill_state.F
633    o pkg/layers:
634      - added CPP flux LAYERS_FINEGRID_DIAPYCNAL to disable fine-grid binning
635        of diapycnal fluxes
636    o pkg/layers:
637      - reverted changes to interpolation to previous treatment; there
638        was never actually a problem
639    o pkg/layers:
640      - fix interpolation of layers tracers in the presence of partial cells
641      - add lots of new functionality to compute water mass transformation
642        (enabled by CPP flag LAYERS_THERMODYNAMICS)
643      - add new calls from main code (diags_oceanic_surf_flux.F,
644        thermodynamics.F, impldiff.F) and gad to save the necessary fields
645        for layers_thermodynamics calculations
646    o pkg/ptracers:
647      - add capability of stepping a passive tracer forward without advection
648        by setting PTRACERS_advScheme to 0.
649    o pkg/diagnostics:
650      - add few (threads) _BARRIER around any update of "diag_pkgStatus".
651    o pkg/layers:
652      - shift potential density field "prho" by -1000 for density layer averaging so
653        that it corresponds to usual "sigma" definition (i.e., rho(p=const)-1000);
654        Note that density bin boundaries (layers_bounds in data.layers) have
655        to be set accordingly (i.e., shifted, in sigma scale).
656    o pkg/layers:
657      - fix snap-shot output of layer thickness @ V.pt and output of pot.density
658      - fix calculation of layer non-weighted velocity and layer probability
659      - add diagnostics for pot.density used for layer averaging
660    o pkg/seaice:
661      - seaice_calc_viscosity.F: change computation of deltaC**2 to ensure
662        positiveness, modify a few comments and improve variable names,
663      - the changed computation of deltaC affects most seaice-related
664        experiments at the truncation level.
665        seaice_itd.thermo is affected by far the most, with
666        only 7 digits of agreement remaining; update experiments.
667    
668    checkpoint65l (2015/05/04)
669    o pkg/shelfice:
670      - in shelfice_thermodynamics.F, if SHELFICEBoundaryLayer=.true., then set
671        factor drKp1 to zero where it is negative (ie. do not use
672        SHELFICEBoundaryLayer if hFacC>1)
673      - the same for factor drLoc in shelfice_forcing.F
674    o tools/genmake2: move FEXTRAFLAGS from FFLAGS to FOPTIM to avoid a problem
675        with modules in ptracers, when using testreport option "-small_f"
676    o pkg/seaice/seaice_growth.F (in case of SEAICE_ITD)
677      - replace tmpscal1**1.36 by faster exp(1.36*log(tmpscal1))
678    o verification/testreport
679      - add new option -small_f
680        with this option testreport first makes the target small_f (*.f files)
681        before running make (all). This is useful for explicit inlining when
682        all sources need to be full available.
683    o pkg/exf/exf_interp.F:
684        remove previous changes related to reverse (decreasing) input grids latitude
685    
686    checkpoint65k (2015/04/01)
687    o pkg/ecco:
688        fix missing cosphi initialization; use eccoiter in place of optimcycle;
689        if autodiff is not compiled then use READ_REC_XY_RL/READ_REC_XYZ_RL
690        instead of active read/write
691    o pkg/ctrl:
692        if autodiff is not compiled then use READ_REC_XY_RL/READ_REC_XYZ_RL
693        instead of active read/write.
694    o pkg/autodiff: make autodiff_readparms.F and autodiff_whtapeio_sync.F
695        return if .NOT.useAUTODIFF
696    o pkg/seaice: add CPP brackets (cost function related).
697    o model/src:
698        add useAUTODIFF run time switch.
699    o pkg/exf/exf_interp.F:
700        add code to allow input grids with latitude starting in the north (i.e. when
701        j=1 corresponds to northern edge of field); modify global_with_exf to test
702        this feature.
703    o verification/testreport:
704      - replace "grep -A3" with POSIX conformal sed command, because there are
705        implementations of grep that cannot do contextual searches
706      - replace "cat -n" by "nl" (two occurrences), because not all implementations
707        of "cat" have the option "-n"
708    o model/src:
709        add new file gsw_teos10.F that contains 3 functions, more or less a copy
710        of the gsw_toolbox.f90 of the TEOS-10 fortran interface, that are used to
711        convert from conservative to potential temperature. For now they are not
712        called anywhere.
713    o pkg/ggl90: make "useIDEMIX" useful
714      - re-organize code in s/r ggl90_calc a little to move computations that
715        are different for idemix into separate loops (changes verification
716        experiment idemix at truncation level, 12 digits remain -> updated)
717      - requires 2 new 2D fields KappaM, verticalShear
718      - make hFacI and recip_hFacI local 3D variables that are passed to
719        s/r ggl90_idemix
720      - fix and improve some comments
721    
722    checkpoint65j (2015/02/25)
723    o pkg/openad
724      - synchronize seawater.F with version in model/src: replace routine
725        body of sw_temp by calling sw_ptmp and fix/add a few comments.
726    o pkg/mnc:
727      - change default value of pickup_read/write_mnc params to FALSE
728        (since few features are missing in reading MNC pickup files).
729    o model/src:
730      - change default (background) vertical diffusivity for salt to be the
731        temperature (background) vertical diffusivity.
732      - change background vertical diffusivity in vertical mixing pkgs ggl90,
733        kl10, my82 and pp81 from temperature diffusivity to salinity diffusivity.
734        This makes ptracers default diffusivity (that uses salt diffKr) more
735        consistent with vertical mixing schemes.
736    o verification/testreport:
737      - fix typo in "-pcls" option ;
738      - put temp files in /tmp (instead of in local dir)
739      - add option "-ncad" to use genmake2 new option "-nocat4ad"
740      - allow to use "-j" option (for multi-procs make) for AD, OAD and TLM.
741    o pkg/ggl90 (idemix code):
742      - apply few fixes ; add some missing "_d 0" ; update output of exp.
743        global_ocean.90x40x15.idemix
744    o OpenAD
745      - enable active file I/O and begin removal of work-around code
746        for OpenAD for handling control variables (memory vs. active files)
747      - new CPP options file OPENAD_OPTIONS.h
748      - revert to genarr2d gradient check for hs94.1x64x5
749      - (genarr3d tested by tutorial_global_oce_biogeo, tutorial_tracer_adjsens)
750      - gentim2d works for halfpipe_streamice but not yet hs94.1x64x5
751    o tools/genmake2:
752      - add option for an alternative Makefile (from Martin) where multiple
753        source files are sent to TAF (instead of all in one file).
754    o pkg/ggl90: add IDEMIX (Olbers and Eden, 2013)
755      - code provided by Carsten Eden as an extension of ggl90
756      - so far the code is turned on within ggl90 by setting a CPP-flag at
757        compile time; a runtime flag implementation is not yet complete
758      - tested in new verification experiment global_ocean.90x40x15.idemix
759    o verification:
760      - reduce length of the AD test run by half for experiments
761        global_ocean.cs32x15 (std + thsice) and isomip
762      - enable active file I/O for OpenAD, adjust verifications accordingly
763      - halfpipe_streamice: change gradient check from genarr2d to gentim2d
764    o verification/testreport:
765      - fix two non-POSIX sed statements so that there are no error messages
766        on Mac OS X
767      - replace hostname -s with hostname | sed 's/\..*$//'
768    o model/src/seawater.F:
769      - simplify SW_TEMP to just calling SW_PTMP with P and PR exchanged
770        (following the matlab code), which would have avoided the bug caught
771        by Matt (see below) in the first place
772    o pkg/shelfice:
773      - implement alternative discretisation of quadratic drag (selectBotDragQuadr)
774        and true distance in no-slip BC (bottomVisc_pCell) similar to bottom-drag.
775      - fix sign of friction tendency (no-slip BC) and fix u,v drag for thin
776        ice-shelf case (i.e., within surface level).
777      - add config summary in shelfice_check.F
778      - remove global variable recip_SHELFICElatentHeat and replace by a local
779        variable recip_latentHeat
780      - introduce diagnostics for friction velocity uStar (in case of
781        SHELFICEuseGammaFrict)
782      - change verification experiment isomip.htd:
783        + start from pickup (as input_ad at nIter0=8640)
784        + start from SHELFICEmassFile instead of SHELFICEloadAnomaly file
785        + test SHELFICEuseGammaFrict = .TRUE.
786        + test SHELFICEadvDiffHeatFlux = .TRUE.
787    o model/src:
788      - fix bug (Thanks to Matt) in function SW_TEMP (to convert Pot.Temp to
789        in-situ Temp) and in routine SW_TEMP (in pkg/openad);
790        update output of experiments global_with_exf.yearly and isomip (all 6).
791    o pkg/shelfice:
792      - change setting of kTopC to also be zero where there is no ice-shelf.
793      - zero out surface forcing arrays (for now, for T & S + EmPmR) where
794        ice-shelf is.
795      - first attempt to get RealFreshWaterFlux effects: for now, only without
796        SHELFICEboundaryLayer ; not consistent if using synchronous time-stepping.
797    o pkg/seaice: add the option to prescribe a fixed thickness PDF
798      for thermodynamic calculations
799      - because of divisions of the type 7/7 not exactly equal to 1, this change
800        affects results of some verification experiments by up to 4 digits:
801        global_ocean.cs32x15.seaice, lab_sea, lab_sea.fd, lab_sea.salt_plume,
802        seaice_obcs, seaice_obcs.seaiceSponge, seaice_obcs.tides
803        adjoint: lab_sea, lab_sea.noseaicedyn
804        -> updated
805    
806    checkpoint65i (2015/01/23)
807    o model/src:
808      - change units of frictionHeating field from W to W/m^2
809      - fix bug in frictional heating from stratospheric drag in
810        S/R ATM_PHYS_TENDENCY_APPLY_V
811      - with synchronous time-stepping: move resetting to zero of frictionHeating
812        field from load_fields_driver.F to thermodynamics.F ;
813      - add diagnostics for frictional heating.
814    o model/src & gmredi K3D:
815      - add frictionHeating field to pickup-files (for synchronous time-stepping)
816      - move ALLOW_EDDYPSI block out of DYNVARS.h and merge it into FFIELDS.h
817      - rename uMean,vMean --> uEulerMean,vEulerMean (+ change diagnostics name
818        and name in pickup file).
819      - fix arguments of few DIAGNOSTICS_FILL calls in gmredi_k3d.F
820    o model/src:
821      - move (from ini_forcing.F) initialisation of all arrays in header file
822        FFIELDS.h into new S/R ini_ffields.F ; this fix broken restart
823        (since Nov 2012) with option selectAddFluid=1.
824    o pkg/shelfice:
825      - change units (+ document) of newly added field "shelfIceMassDynTendency"
826      - upgrade from _RS to _RL shelficeMass & shelficeLoadAnomaly arrays.
827    o pkg/obcs: re-organize obcs_calc_stevens.F to prepare for passive tracers
828    o pkg/seaice: two new runtime parameters:
829      - SEAICE_cStar replaces the hard wired "20" in the strength formulation,
830        long overdue
831      - SEAICE_tensilFac: preparation for Koenig-Beatty+Holland (2012)
832        parameterization of tensil stress for fast ice (does not do anything yet)
833    o pkg/seaice/seaice_check.F: left over from restricted addtive Schwarz method
834        for LSR: move checking overlaps out of JFNK-if-block
835    o pkg/atm_phys:
836      - move copy of grid and dynamical fields out of atm_phys_driver.F into
837        new S/R ATM_PHYS_DYN2PHYS.
838      - fix level height for Linear Free-Surf case (to be consistent with
839        fixed-in-time pressure levels).
840    o pkg/mom_common (bottomdrag):
841      - average bottomDragFld (ALLOW_BOTTOMDRAG_CONTROL) from grid-cell center
842        to correct location (U & V point) in S/R MOM_U/V_BOTTOMDRAG;
843        update output (adm & tlm) of experiment global_ocean.90x40x15.bottomdrag.
844    o pkg/shelfice (u/v_drag):
845      - add one argument (the other velocity component) to S/R SHELFICE_U/V_DRAG;
846      - use SHELFICEDragLinear & SHELFICEDragQuadratic in shelfice_v_drag.F
847        (now similar to shelfice_u_drag.F)
848      - remove condition on bottomDragTerms when calling SHELFICE_U/V_DRAG
849        from mom_vecinv.F (similar to mom_fluxform calls).
850    o pkg/mom_common (bottomdrag):
851      - add one argument (the other velocity component) to S/R MOM_U/V_BOTTOMDRAG;
852      - add options for alternative discretisation of velocity norm in quadratic
853        bottom drag: averaging of grid-cell-center KE to U.point and V.point
854        (selectBotDragQuadr=0, original code) can produce noisy patterns; this
855        improves when averaging only the other component (e.g. vVel for U bottom
856        drag) using wet-point method (selectBotDragQuadr=2) or not (=1).
857      - add options (bottomVisc_pCell) to account for partial-cell in bottom
858        friction (no-slip BC) thus getting the true distance from the bottom;
859        off by default since this also reduces model stability (explicit bottom
860        friction). Changes produce different machine truncation with linear-drag
861        + no-slip BC: update output of experiments exp4.stevens (10 digits) and
862        front_relax (bvp & mxl, 10 & 11 digits).
863    o model/src & mom pkgs:
864      - add one more level to vertical viscosity local arrays (Nr+1, previously Nr)
865        since no-slip bottom BC uses viscosity @ k+1 to update velocity @ level k
866      - for now and until vertical mixing scheme are updated to fill up level Nr+1,
867        just copy level Nr value to level Nr+1.
868    o doc:
869      - add notes form Abhisek Chakraborty on how to close Heat & Salt budgets.
870    o pkg/shelfice:
871      - shelfice_init_varia.F, shelfice_init_fixed.F, shelfice_readparms.F,
872        SHELFICE.h: move array shelficemass to init_varia, initialise
873        from array shelficemassinit, which is set in init_fixed and
874        has option to be set from file; introduce array
875        shelficeMassDynTend array, set thru file in init_fixed
876      - NEW FILE: shelfice_step_icemass.F: update shelficemass from either
877        shelfIceFreshWaterFlux and shelficeMassDynTend or H_streamice in
878        pkg/streamice
879      - shelfice_thermodynamics.F: call shelfice_step_icemass if
880        SHELFICEMassStepping = .true.
881      - shelfice_ad_diff.list: add new subroutine shelfice_step_icemass.f
882    
883    checkpoint65h (2014/12/17)
884    o verification/global_ocean.90x40x15, global_ocean_ebm:
885      - update to generic controls.
886    o pkg/ctrl:
887      - ctrl_map_ini_genarr.F: test for igen>0
888      - ctrl_init_variables.F: add call to CTRL_MAP_INI_GENTIM2D.
889      - move gentim2d part of ctrl_map_ini_genarr.F to
890        new separate routine : ctrl_map_ini_gentim2d.F
891      - ctrl_cost_driver.F,ctrl_init.F ctrl_map_ini_genarr.F:
892        add time variable weights and cyclic controls (time mean,
893        seasonal cycle, etc) capabilities to gentim2d
894    o pkg/ecco:
895      - move reading of error, conversion to weights from
896        ecco_cost_init_fixed.F to ecco_toolbox.F (ecco_readwei)
897    o global_oce_llc90, cs32:
898      - activte sbo.
899      - CTRL_SIZE.h : add maxCtrlProc.
900      - activate the new genctrl capabilities.
901      - update following reorganization of global_oce_input_fields.tar.gz  
902    o pkg/ctrl/ctrl_ad_diff.list:
903      - add missing ctrl_init_rec.f
904    o tools/OAD_support/keepOriginal:
905      - add ctrl_init_rec.F
906    o model/src/the_main_loop.F, pkg/ctrl/ctrl_map_ini_genarr.F:
907      - avoid recomputations of xx_gentim2d_dummy.
908    o momentum diagnostics:
909      - move filling of diagnostics Um_Diss & Vm_Diss from mom_fluxform.F and
910        mom_vecinv.F to timestep.F (to include Smag-3D contribution).
911    o pkg/seaice/seaice_lsr.F:
912      - fix computation of BU/BV, make sure they are non-zero, only necessary
913        for cubed sphere exchanges and SEAICE_OLx/y>0.
914        This makes calling s/r fill_cs_corner_rl obsolete (removed).
915    o verification/global_ocean.cs32x15/input.seaice
916      - add test for strong implicit coupling and restricted addtive Schwarz
917        methods for LSR
918      - update results/output.seaice.txt
919    o verification/tutorial_global_oce_biogeo:
920      - AD & OAD set-up: switch off ALLOW_OLD_VIRTUALFLUX (like in fwd set-up)
921        and set PTRACERS_EvPrRn(1,2) to zero (for DIC & ALK);
922        update output_adm,_oadm,_tlm.txt
923    o pkg/dic:
924      - change default to "#undef ALLOW_OLD_VIRTUALFLUX" in DIC_OPTIONS.h
925      - add a stop when ALLOW_OLD_VIRTUALFLUX is defined and PTRACERS_EvPrRn
926        for tracer 1 & 2 is set (to avoid double counting of dilution effect).
927    o verification/tutorial_global_oce_biogeo:
928      - AD & OAD set-up: do not set PTRACERS_EvPrRn for tracer 1 & 2 since
929        dilution is already added by pkg/dic ALLOW_OLD_VIRTUALFLUX ;
930        update output_adm,_oadm,_tlm.txt
931    o eesupp/src:
932      - add fill_cs_corner_rl.F (_RL-copy of fill_cs_corner_rs.F)
933        and call it in seaice_lsr when using nonzero SEAICE_OLx/y
934    o pkg/seaice: introduce strongly implicit coupling, intended for stabilizing
935      LSR (following Hutchings et al. 2004)
936      - introduce zetaZ as a global variable (requires adjustments in
937        seaice_evp.F and seaice_jfnk.F) and compute analoguously to etaZ
938        in seaice_calc_viscosities.F
939      - new flag SEAICEuseStrImpCpl (default off)
940      - add new terms zetaZ*du/dy and zetaZ*dv/dx on both sides of the
941        momentum equations
942      - JFNK-solver (preconditioner) adjusted to allow using this method
943        (where it does not have any positive effect)
944    o pkg/seaice
945      - add overlap for restrictive additive Schwartz method also to LSR, but
946        turn it off by default (because it only seems to work for non-cubed
947        sphere/llc topologies)
948    o pkg/autodiff
949      - add extra exchanges in addummy_in_steppging also for mnc output
950    o pkg/seaice:
951      - add extra exchanges before dumping adjoint fields in seaice_ad_dump.F
952        to avoid stripes in the adjoint output (similar to addummy_in_stepping.F)
953    o pkg/obcs:
954      - add option to specify domain-connected piece Id along OB though files
955        (for now, only used to diagnose PhiVel; default =1 -> global correction)
956      - modify obcs_diag_balance.F to process each connected-part separately;
957        exclude OB where Id = 0 but keep the full divergence there (-> constant
958        Psi along this portion of OB and all inflow derived from grad(Phi))
959      - add example of OB-conect files in verification/so_box_biogeo/input.
960    o pkg/diagnostics:
961      - improve treatment of Open-Boundaries in Velocity-Potential calculation:
962      a) use non zero matrix element across OB and solve for Phi 1 grid point
963         outside OB (i.e, where tracer OBCS are applied).
964      b) global imbalance of inFlow/outFlow across OB: instead of modifying
965         velocity across OB, spread it uniformly along the OB in the RHS.
966    
967    checkpoint65g (2014/11/19)
968    o pkg/diagnostcis:
969      - add preconditioner off-diagonal factor (diagCG_pcOffDFac) as run-time param
970    o pkg/my82,pp81,kl10:
971      - fix ALLOW_3D_DIFFKR implementation (previously had no effect): use 3-D
972        field diffKr as background diffusivity to set minimum diffusivity value.
973    o pkg/seaice:
974      - add new parameter SEAICEuseEVPrev (for revisited EVP by
975        Bouillon et al 2013)
976      - add SEAICE_evpAlpha/Beta to namelist
977      - modify seaice_evp code to able to use SEAICEuseEVPrev. These changes
978        involve trivial re-ordering of divisions/multiplications that should not
979        have any effects, but ... they do change the results of lab_sea.hb87 so
980        that only 2 digits of agreement remain, in line with the general
981        instability/fragility of the evp-code. For now, I do not care and just
982        update the verification experiment
983    o pkg/ctrl : add generic pre-processing (xx_genarr2d_preproc etc)
984      - remove xx_genarr2d_numsmooth etc
985      - use xx_genarr2d_preproc etc instead
986      - carry out smooth_correl2D at initialization stage rather than during
987        time stepping.
988      - get smoothOpNb from xx_gentim2d_preproc
989    o global_oce_cs32 :
990      - add test of generic ecco capabilities.
991    o pkg/exf/exf_getsurfacefluxes.F :
992      - add to tmpUE/tmpVN rather than re-initializing them (conventional behavior).
993    o pkg/ctrl,ecco :
994      - omit un-necessary arguments to ctrl_cost_gen.F unless ECCO_CTRL_DEPRECATED
995        is defined.
996    o pkg/seaice: add diagnostics for Delta (deformation parameter)
997    o model/src:
998      - when ALLOW_3D_DIFFKR is defined, add a Warning if any of the vertical
999        diffusivity (background) is specified but ignored.
1000    o verification:
1001      - in testreport, convert hostname to lower case for default output dir name
1002    o model, pkg : add useCTRL, useECCO parameters (on/off run time switch).
1003    o pkg/dic: add modifications from Hajoon:
1004      - add iron sedimentation flux function of the flux of PO4 out of bottom layer
1005      - light attenuation: add self-shading effect by climatological Chlorophyll
1006        (read from file).
1007    o pkg/seaice/seaice_preconditioner.F : fix cpp flags, so that code also
1008        compiles when SEAICE_ALLOW_DYNAMICS is undefined
1009    o global_oce_llc90,cs32 : ecco_v4 verification exps now use separate
1010        AUTODIFF_OPTIONS.h, CTRL_OPTIONS.h, ECCO_OPTIONS.h rather than
1011        ECCO_CPPOPTIONS.h (i.e. replacing the deprecated, circumvoluted,
1012        approach where CPP_OPTIONS.h includes an omnipotent
1013        ECCO_CPPOPTIONS.h that superseeds pkgs '_OPTIONS.h').
1014    o pkg/ctrl/ctrl_map_ini_genarr.F : include GMREDI_OPTIONS.h where
1015        ALLOW_3D_KAPGM, ALLOW_3D_KAPREDI (to be added later) belong.
1016    o pkg/seaice/SEAICE_SIZE.h : replace ALLOW_AUTODIFF_TAMC with ALLOW_AUTODIFF
1017        to avoid needing AUTODIFF_OPTIONS.h anytime SEAICE_SIZE.h is included
1018        (it seems that THSICE_SIZE.h, PTRACERS_SIZE.h have the same issue...)
1019    o model/src, pkg/smooth, profiles, salt_plume, seaice, exf, ecco, ctrl :
1020      add ECCO_OPTIONS.h, AUTODIFF_OPTIONS.h, CTRL_OPTIONS.h when needed
1021      - ECCO_OPTIONS.h is needed when including ecco_cost.h, ecco.h
1022      - AUTODIFF_OPTIONS.h is needed when including tamc.h, tamc_keys.h
1023      - CTRL_OPTIONS.h is needed when including ctrl.h, optim.h, etc
1024    o pkg/ctrl,ecco,exf :
1025      - remove variables associated with NON-generic costs,
1026        unless ECCO_CTRL_DEPRECATED is defined.
1027      - remove NON-generic NON-obcs controls,
1028        unless ECCO_CTRL_DEPRECATED is defined.
1029    o pkg/ctrl : added ctrl_local_params.h
1030    o pkg/ecco : added ecco_local_params.h
1031    o verification : added ECCO_CTRL_DEPRECATED to most as and oad
1032        experiments, which will progressively be removed once the
1033        experiments are revised to use only generic controls/costs.
1034    
1035    checkpoint65f (2014/10/13)
1036    o pkg/ctrl, ecco, seaice : minor changes in headers
1037    o global_oce_llc90,cs32 : ecco_v4 verification exps now test generic
1038        cost function and control capabilities added since checkpoint65c.
1039    o pkg/ctrl: regroup all obcs ctrl variables in CTRL_OBCS.h.
1040    o pkg/ecco: increase modularity and improve logic
1041      - ecco_toolbox.F (new) : basic operations that are often used,
1042        including ecco_zero, ecco_cp, ecco_cprsrl, ecco_diffmsk,
1043        ecco_addcost, ecco_add, ecco_div, ecco_readbar.
1044      - cost_gencal.F (new) : determine filnames and records.
1045      - cost_genread.F, cost_generic.F : condense code using ecco_toolbox.
1046      - cost_generic.F : use spzeroloc rather than hard-coded -9999,
1047        and exploit the above functions leading to more compact code.
1048      - cost_genread.F : rm un-necessary arguments, re-arrange args order.
1049      - ecco_check.F, ecco_readparms.F : bring logic up to date (using_tpj,
1050        using_ers, using_gfo, using_mdt is now only defined within gencost)
1051    o pkg/ecco: extend generic cost capabilities
1052      - pkg/ecco : added 3D gencost (ALLOW_GENCOST3D), added gencost
1053        capabilities via gencost_preproc (+ _c,_i,_r related params),
1054        gencost_posproc (+ _c,_i,_r related params), gencost_nrecperiod,
1055        gencost_outputlevel arguments to cost_generic
1056      - pkg/ecco/cost_genread.F (new) : interface between cost_generic
1057        and active_read, making room for gencost_preproc to take effect.
1058        Added preproc code ('climmon') to replace GENERIC_BAR_MONTH.
1059      - pkg/ecco/cost_generic.F :
1060        compute and store misfit maks*(model-data) in localdif that is
1061        then used in cost and for output, output misfit if outlev.GT.0
1062      - pkg/ecco/cost_averagesfields.F : depend on gencost_barskip
1063        rather gencost_barfile for deciding whether to write barfile
1064      - pkg/ecco/ecco_cost_driver.F : extract call to cost_profiles from cost_hyd
1065      - pkg/ecco/ecco_cost_init_fixed.F : extract gencost weights from
1066        ecco_cost_weights, re-activate ecco_summary, determine gencost_barskip
1067      - pkg/ecco/ecco_summary.F : report gencost variables
1068      - pkg/ecco/cost_gencost_customize.F : treat case of scatterometer costs
1069    o pkg/sea/SEAICE_OPTIONS.h : add ALLOW_COST_ICE, ALLOW_SEAICE_COST_SMR_AREA
1070    o pkg/ecco: internal re-organization
1071      - resolve un-necessary dependancies within pkg/ecco and to pkg/ctrl
1072        (rm includes of optim.h and ctrl.h, replace optimcycle with eccoiter,
1073        mv relevant variables definition from ecco_cost.h to ecco.h,
1074        make sure gencost routines only include ecco.h)
1075      - throughout : add missing CCP switches, rm unused variables,
1076        and rm un-necessary CPP switches
1077      - throughout gencost routines : replace modelstartdate with
1078        gencost_startdate when needed
1079      - cost_bp_read.F : use arguments, instead of common blocs
1080        so that it can be used also by (new) cost_gencost_bpv4.F
1081      - ecco_init_varia.F : initialize RHOsumGlob_0, VOLsumGlob_0
1082      - ecco_phys.F : compute etanFull
1083      - ecco_readparms.F : rename using_topex as using_tpj, add
1084        bpv4-grace to gencost list, initialize added parameters
1085      - ecco_summary.F : include SIZE.h needed for augmented ecco.h
1086    
1087    checkpoint65e (2014/09/28)
1088    o pkg/obcs:
1089      - replaced the just-added CPP options with run-time variables
1090        (see pkg/obcs/OBCS_PARAMS.h for details)
1091    o pkg/obcs:
1092      - add additional CPP options for sponge boundary layers
1093        (see pkg/obcs/OBCS_OPTIONS.h for details)
1094    o pkg/atm_phys:
1095      - implement simple (obliquity only, assuming circular planet orbit)
1096        seasonal cycle for incoming insolation ; used when run-time parameter
1097        "select_incSW" is set to 1 ; by default (=0), uses old unchanged formula.
1098    o pkg/exf, pkg/ecco, pkg/ctrl:
1099      - add ctrlUseGen and .NOT.ctrlUseGen exclusive brackets
1100      - activate gentim2d for xx_atemp,xx_aqh,xx_swdown,xx_lwdown,xx_precip
1101      - implement gentim2d for xx_tauu, xx_tauv
1102    o pkg/ctrl, pkg/ecco :
1103      - fix and complement the generic controls implementation
1104    o pkg/exf/exf_getclim.F, exf_getffields.F, exf_getsurfacefluxes.F,
1105        pkg/shelfice/shelfice_thermodynamics.F,
1106        verification/hs94.1x64x5/code_ad/ctrl_map_gentim2d.F,
1107        verification/hs94.1x64x5/code_oad/ctrl_map_gentim2d.F :
1108      - add weight in CTRL_GET_GEN calls
1109    o pkg/ctrl :
1110      - ctrl_get_gen.F : add weight as input parameter, and apply
1111        it directly rather than using smooth_correl2Dw (to be retired).
1112      - ctrl_map_gentim2d.F : add wgentim2d in CTRL_GET_GEN call
1113    o pkg/ctrl :
1114      - introduce run time switch ctrlUseGen (in ctrl.h, ctrl_check.F,
1115        ctrl_init_variables.F, ctrl_readparms.F, ctrl_summary.F)
1116      - re-activate ctrl_summary (call in ctrl_init.F)
1117    o pkg/ctrl/ctrl_cost_gen.F :
1118      - fix CCP brackets, remove un-necessary myiter, mytime
1119    o pkg/ecco, pkg/ctrl :
1120      - remove cost_genctrl.F (now pkg/ctrl/ctrl_cost_driver.F)
1121      - remove cost_forcing_gen.F (now pkg/ctrl/ctrl_cost_gen2d.F)
1122      - add ctrl_cost_driver.F (replaces pkg/ecco/cost_genctrl.F)
1123      - add ctrl_cost_gen2d.F (replaces pkg/ecco/cost_forcing_gen.F)
1124    
1125    checkpoint65d (2014/09/15)
1126    o pkg/ctrl/CTRL_GENARR.h, ctrl_readparms.F :
1127      - add xx_genarr2d_bounds,xx_genarr3d_bounds,
1128        xx_genarr2d_numsmooth, xx_genarr3d_numsmooth
1129    o pkg/ctrl/ctrl_map_ini_genarr.F :
1130      - remove compilation failure
1131      - replace hard coded example
1132      - use ctrl_map_ini_gen2D, 3D
1133    o pkg/ctrl/ctrl_pack.F, ctrl_unpack.F :
1134      - on/off switch based upon xx_genarr2d_weight,3d
1135    o src/packages_init_variables.F :
1136      - regroup pkg/estimation calls
1137      - remove CTRL_MAP_INI, CTRL_MAP_INI_ECCO
1138        (moved to ctrl_init_variables)
1139    o cost/cost_init_varia.F :
1140      - remove ecco_cost_init_varia
1141        (moved to ecco_init_varia)
1142    o ctrl/ctrl_init_variables.F :
1143      - add CTRL_MAP_INI, CTRL_MAP_INI_ECCO
1144      - add CTRL_MAP_INI_GENARR, SEAICE_CTRL_MAP_INI
1145    o ctrl/ctrl_map_ini.F :
1146      - remove ctrl_map_ini_genarr, seaice_ctrl_map_ini
1147        (moved to ctrl_init_variables)
1148    o ctrl/ctrl_map_ini_ecco.F :
1149      - remove ECCO_PHYS (mv to ecco_init_varia)
1150      - remove seaice_ctrl_map_ini (mv to ctrl_init_variables)
1151    o ecco/ecco_ad_diff.list :
1152      - add ecco_init_varia.f
1153    o ecco/ecco_init_varia.F
1154      - new routine
1155    o pkg/streamice:
1156      - move call to STREAMICE_INITIALIZE_PETSC from the_model_main.F
1157        to streamice_init_fixed.F ; fix setting of STREAMICEisOn.
1158      - from model/src, only call pkg/streamice routines if useStreamIce is TRUE.
1159    o pkg/generic_advdiff:
1160      - fix bug causing negatives in GAD_SMOLARKIEWICZ_HACK, introduced 8/8/2014.
1161    o pkg/exf:
1162      - exf_getffields.F : add xxg_atemp, xxg_aqh, xxg_swdown, xxg_lwdown,
1163         xxg_precip capability
1164      - exf_wind.F : no need for ALLOW_WSPEED_CONTROL cpp switch
1165    o pkg/ctrl:
1166      - ctrl_pack.F, ctrl_unpack.F : omit (un)packing of undefined xx_gentim2d
1167    o model/src/load_fields_driver.F :
1168      - move call to CTRL_MAP_GENTIM2D ahead of BULKF_FIELDS_LOAD, EXF_GETFORCING
1169        so xx_gentim2d can be applied to e.g. exf fields in a timely manner.
1170    o OpenAD verification experiments:
1171      - Include explicitly AUTODIFF_OPTIONS.h, COST_OPTIONS.h, and CTRL_OPTIONS.h
1172        in src files (to enable to skip the ECCO_CPPOPTIONS.h);
1173        for now, only in pkgs used in OpenAD verification experiments.
1174      - Change all except one (halfpipe_streamice) OpenAD experiments to use pkg
1175        specific option file (AUTODIFF_OPTIONS.h, COST_OPTIONS.h & CTRL_OPTIONS.h)
1176        instead of using ECCO_CPPOPTIONS.h (with all relevant options in it).
1177        This applies to both TAF (*/code_ad/) and OpenAD (*/code_oad/) tests.
1178    o OpenAD verification tests:
1179      - finish removing ALLOW_AUTODIFF_OPENAD (replaced by ALLOW_OPENAD);
1180      - finish replacing ALLOW_AUTODIFF_TAMC by ALLOW_AUTODIFF (except for
1181        tape/storage which are specific to TAF/TAMC) in pkgs used in OpenAD exp.
1182      - leave ALLOW_AUTODIFF_TAMC undef in OpenAD verification tests (*/code_oad/)
1183        and remove local copy of "tamc.h" (needed only if ALLOW_AUTODIFF_TAMC).
1184    o model/src & generic_advdiff:
1185      - change hard-coded loop-range in S/R APPLY_FORCING_T/S to set T & S
1186        forcing over 0:sNx+1, 0:sNy=1 (instead of just 1:sNx,1:sNy): Model
1187        dynamics requires valid tracer forcing only over tile interior but, for
1188        some diagnostics, may need to extend it over 1 point in tile halo region.
1189      - in gad_calc_rhs.F, update calls to gmredi_x/ytransport to get valid
1190        tendency over i,j_Min,Max range. This allows to simplfy i,j_Min,Max
1191        setting in temp/salt/ptracer_integrate.F
1192    o pkg/dic:
1193      - multiply tracer tendencies by maskInC (if ussing OBCS) before updating
1194        gchem tracers: this allows to skip the 2nd call to OBCS_APPLY_PTRACER
1195        in gchem_forcing_sep.F
1196    o pkg/autodiff & obcs:
1197      - add storage of current OB values for U & V (was already done for T & S).
1198    
1199    checkpoint65c (2014/08/30)
1200    o pkg/dic:
1201      - take out of dic_atmos.F the initialisation part (corresponding to istate=0)
1202        and move it to new S/R DIC_INI_ATMOS ; also simplify the dependencies for
1203        AD compilers (but still a Pb with multi-threading and Ajoint dependencies).
1204    o verification:
1205      - new experiment testing OBCS and DIC pkgs, using params & output from
1206        tutorial_global_oce_biogeo but limited to a sub-domain around Drake
1207        passage: take OBCS from the last year of a 2 yrs simulation and initial
1208        conditions from t=1.yr while keeping the same forcing.
1209    o model/src:
1210      - when allowFreezing=T, only reset below freezing initial Temp to Tfreezing
1211        (at any k) if checkIniTemp is not set to FALSE (default checkIniTemp=T).
1212    o pkg/diagnostics (Stats-Diags):
1213      - re-write S/R DIAGSTATS_CALC (more similar to TARGET_NEC_SX part) to:
1214        a) refine region where stats are computed, excluding where arrhFac=0 ;
1215        b) fix missing interior mask (use with OBCS) in 3-D fields statistics;
1216        c) extend regional stats over the region edges (for U or V pt location).
1217    o pkg/gchem:
1218      - add a (2nd) call to OBCS_APPLY_PTRACER in gchem_forcing_sep.F (needed since
1219        pkg/dic is currently changing/updating ptracers values beyond the OB).
1220    o verification (hs94):
1221      - convert Held & Suarez external_forcing.F (from hs94.cs, with Sigma-coords
1222        bits) to apply_forcing.F and undef USE_OLD_EXTERNAL_FORCING in experiments
1223        hs94.cs-32x32x5 and tutorial_held_suarez_cs ; also use the same version of
1224        apply_forcing.F in 2D hs94 (fwd, ad & oad) but keep LatLon hs94 unchanged.
1225    o pkg/ptracers:
1226      - implement Adams-Bashforth on pTracers (instead of on tracer tendency),
1227        switched on by setting PTRACERS_doAB_onGpTr=F (default set to doAB_onGtGs)
1228      - change exp4 secondary test (input.nlfs) to test AB on T & S & pTracer
1229        with AB-2 code (so that it get tested).
1230    o model/src:
1231      - allow to apply Adams-Bashforth on Temp & Salt (instead of on gT,gS)
1232        with AB-2 code (previously only available with AB-3 code).
1233        Also move the code (call to ADAMS_BASHFORTH S/R) form thermodynamics.F
1234        to temp/salt_integrate.F (since the 2nd part of gt/sNm1 update is done
1235        there, by calling CYCLE_AB_TRACER).
1236    o pkg/generic_advdiff:
1237      - change Tracer argument (drop bi,bj indices) in S/R GAD_CALC_RHS,
1238        GAD_C2_ADV_R, GAD_U3_ADV_R, GAD_C4_ADV_R, GAD_DIFF_R, GAD_BIHARM_R
1239        + also in GMREDI_X/Y/RTRANSPORT ; and update corresponding calls in
1240        S/R temp/salt/ptracers_integrate.F
1241    o model/src & pkg/ptracers:
1242      - remove common block variables gT,gS (in DYNVARS.h), except when
1243         USE_OLD_EXTERNAL_FORCING is defined; update TAF storage accordingly.
1244      - remove common block variable gPtr.
1245    o model/src & pkgs:
1246      - change gTracer (and/or tracer) argument (drop bi,bj indices) in S/R
1247         ADAMS_BASHFORTH(2&3), CYCLE_(AB_)TRACER, FREESURF_RESCALE_G,
1248         IMPLDIFF, SOLVE_TRIDIAGONAL & _PENTADIAGONAL, GAD_SOM_ADVECT,
1249         GAD_ADVECTION, GAD_CALC_RHS, GAD_IMPLICIT_R, TIMEAVE_CUMUL_DIF_1T
1250      + change accordingly all calling S/R.
1251      - use local temperature/salinity/ptracer tendency array (without bi,bj)
1252        in S/R temp/salt/ptracers_integrate.F
1253    o pkg/seaice:
1254      - move computation of stress contributions to rhsU/V in s/r seaice_lsr
1255        to separate s/r seaice_lsr_rhsu/v in order to be able to re-use code
1256      - make u/vIceC local variables if SEAICE_CGRID is defined only to be used
1257        in seaice_lsr
1258      - seaice_lsr.F: make local 4D arrays UXX, VYY, etc 2D
1259        in s/r seaice_lsr_calc_coeffs
1260    o pkg/mdsio:
1261      - in MDS_READ/WRITE_FIELD, stop if file-name (+prefix) is too long
1262        (e.g., > MAX_LEN_MBUF -90 ) or, in INI_MODEL_IO, if mdsioLocalDir is
1263        too long (e.g., > MAX_LEN_FNAM/2 )
1264    
1265    checkpoint65b (2014/08/12)
1266    o pkg/matrix:
1267      - pass, as argument, updated tracer field to S/R MATRIX_STORE_TENDENCY_EXP
1268    o model/src:
1269      - fix initialisation of geothermalFile; compile geothermal-flux code in
1270        natl_box verification experiment.
1271    o model/src & pkg/down_slope:
1272      - push the k loop inside S/R TIMESTEP_TRACER (now called outside the k loop).
1273      - in dwnslp_apply.F, update tracer tendency instead of the future tracer
1274        field and call S/R DWNSLP_APPLY before TIMESTEP_TRACER; this affects
1275        results at machine truncation level: update output of experiments
1276        global_ocean.90x40x15.dwnslp (FWD) and lab_sea.noseaicedyn (AD).
1277    o pkg/diagnostics (Stats-Diags):
1278      - do not cumulate the full volume when DIAGNOSTICS_FILL is
1279        called with bibjFlg < 0 (no increment of the counter for 2D/3D diag);
1280        This fix the mean statistics when DIAGNOSTICS_FILL is called multiple
1281        times (but Min,Max and StD are still wrong).
1282    o model/src:
1283      - add geothermal flux forcing: read in ini_forcing.F as time-constant
1284        field "geothermalFlux" applied in S/R APPLY_FORCING_T (apply_forcing.F)
1285    o model/src:
1286      - move CYCLE_TRACER calls from tracers_correction_step.F to temp/salt/ptracer
1287        _integrate.F so that, when leaving S/R THERMODYANMICS, theta,salt and pTrac
1288        arrays are already updated while adjustments (filters, conv.adjustment) are
1289        still applied later, in S/R TRACERS_CORRECTION_STEP.
1290    o model/src:
1291      - store in common bloc array "rhoInSitu" the virtual potential temperature
1292        anomaly that is used to compute geopotential: this make the atmos code
1293        more similar to ocean code which already uses rhoInSitu in calc_phi_hyd.F
1294    o pkg/seaice/seaice_lsr.F
1295      - rename integer variable ilcall to ipass (that's what it is called
1296        in the residual diagnostics
1297      - change time stepping for NPSEUDOTIMESTEP > 2 (does not change the
1298        default) for improved non-linear convergence of the first few steps
1299      - adjust a few comments and add new ones to explain some of the store
1300        directives
1301    o pkg/generic_advdiff (& ptracers):
1302      - re-work the code to check for valid advection scheme and for minimum
1303        size of overlap (now stored in local common bloc in gad_advscheme.F)
1304    o pkg/seaice: another attempt to make the adjoint work for sea ice dynamics
1305      - re-initialize more variables in seaice_lsr: u/vIceC, u/vIceNm1
1306      - add an auxilliary variable "bet" and fix store directives and keys in
1307        seaice_lsr_tridiagu/v, this seems to do the trick (i.e. more or
1308        less exact gradients in my tests); but there are still
1309        recomputation warning (although gradients are sort of OK), when
1310        SEAICE_LSR_VECTORIZE is not defined, so this flag and
1311        SEAICE_LSR_VECTORIZE_ZEBRA are recommended for efficiency.
1312      - update verification experiments lab_sea.
1313      - change some comments in S/R seaice_calc_viscosities
1314    o model/src:
1315      - if staggerTimeStep=T, always apply exchange to velocity field in
1316        do_stagger_fields_exchanges.F instead of in do_fields_blocking_exchanges.F
1317        (independent of using multi-dim advection or not); no effect on FWD run
1318        but affects AD results (at machine truncation level): update output of
1319        experiment 1D_ocean_ice_column (ad: 12 digits), hs94.1x64x5 (ad,oad: 13.d)
1320        and isomip (oad: 12.d).
1321    o pkg/generic_advdiff:
1322      - stop if doAB_onGtGs is set to FALSE but ignored
1323      - refine warning related to stability of tracer time-stepping
1324        regarding internal wave dynamics.
1325      - setting of AdamsBashforth_T,S when doAB_onGtGs=F: remove condition
1326        on staggerTimeStep & implicitIntGravWave (will now get a warning
1327        if potentially unstable).
1328    o pkg/kl10:
1329      - add new pkg "kl10" for mixing due to internal wave breaking, from
1330        http://www.sciencedirect.com/science/article/pii/S1463500310000144
1331        (contribution from Jody Klymak), tested in verification experiment
1332        verification/internal_wave/input.kl10/
1333    o isomip experiment:
1334      - test pkg/shelfice with Non-Lin Free-Surf in one of the FWD set-up
1335        (input.htd) and update the output.
1336    o cd_code experiments:
1337      - use default cd_code options (#undef CD_CODE_NO_AB_MOMENTUM &
1338        #undef CD_CODE_NO_AB_CORIOLIS) in experiments: cfc_example (fwd)
1339        global_ocean.90x40x15 (ad & oad) and OpenAD (ad & oad) and
1340        update the corresponding output.
1341    o pkg/seaice:
1342      - reduce the number of include files and store directives in
1343        S/R seaice_lsr_tridiagu/v
1344      - change the order of loops in one case in S/R seaice_lsr_tridiagv
1345        (only for SEAICE_VECTORIZE_LSR_ZEBRA defined), which allows me to
1346        get rid off one store directive (a TAF bug?)
1347      - add one more instance of ifdef SEAICE_VECTORIZE_LSR_ZEBRA in
1348        S/R seaice_lsr_tridiagv to change the loop range for consistency
1349      - remove ilcall, m from parameter list of S/R seaice_lsr_tridiagu/v
1350      - fix a bug that affects the JFNK solver: replace sNx/y by i/jMax in
1351        S/R seaice_lsr_tridiagu/v (requires update of
1352        offline_exf_seaice/input.dyn_jfnk)
1353    
1354    checkpoint65a (2014/07/27)
1355    o model/src:
1356      - Non-Lin Free-Surf in p/z coords: allows hFacW,S to be larger than
1357        surrounding hFacC=1 @ edge of a step with different kSurfC on either side
1358        (topo in p-coords, ice-shelf in z-coords); update output of experiments
1359        tutorial_global_oce_in_p and isomip (both AD and OpenAD output).
1360    o model/src:
1361      - collect momentum forcing tendency into local 2-D array (passed as argument
1362        to apply_forcing S/R); this simplifies mom. Forcing diagnostics and CD_CODE
1363        parts in timestep.F (without CD_CODE_NO_AB_MOMENTUM defined = the default);
1364        affects results at machine truncation level (e.g., if using OBCS_SPONGE).
1365      - collect T & S forcing tendency into local 2-D array (passed as argument to
1366        apply_forcing S/R); add 3-D diagnostics for temp & salt forcing tendency.
1367        affects results at machine truncation level (e.g., ocean: if using
1368        SHORTWAVE_HEATING ; atmos: if using FrictionHeating or (atm_Rq<>0) moist
1369        correction due to vertical advection).
1370      - update output of experiments: fizhi-cs-32x32x40 (13 digits),
1371        global_ocean.cs32x15 (fwd: icedyn, seaice, thsice, all 3 @ 11d; adm & tml:
1372        seaice_dynmix & thsice, fwd grd @ 3 & 8), hs94.1x64x5 (ad grd @ 13),
1373        obcs_ctrl (ad & fwd grd @ 12 & 7).
1374    o pkg/ptracers & diagnostics:
1375      - use ptracers (short) name (instead of long one) to make ptracers diagnostics
1376        title (to avoid some unexpected truncation); sort out ptracers diags units.
1377      - collect ptracer forcing tendency into local 2-D array (passed as argument
1378        to apply_forcing S/R); add 3-D diagnostics for ptracers forcing tendency.
1379    
1380    checkpoint65 (2014/07/18)
1381    o pkg/fizhi:
1382      - add parenthesis around fizhi tendencies in fizhi_tendency_apply.F: this
1383        affects results at machine truncation level. Update output of experiments
1384        fizhi-cs-32x32x40 (12 digits for cg2d) & fizhi-cs-aqualev20 (13 digits).
1385    o pkg/seaice: more clean up
1386      - rename TAF common block tapes to be more consistent and remove
1387        unnecessary duplicates
1388      - add store directives to remove more recomputations, but use smaller
1389        tapes (and adjust keys) when SEAICE_LSR_ADJOINT_ITER is undefined.
1390        The idea behind this flag is to reduce the memory footprint when the
1391        adjoint of the LSR is not required. As of now, defining the flag
1392        SEAICE_LSR_ADJOINT_ITER increases 4 common block tapes for 2D field by
1393        a factor of SOLV_MAX_FIXED (=500 by default in SEAICE_SIZE.h).
1394        For experiment offline_exf_seaice, this means on a linux box with gfortran
1395        nearly a factor of 10 (but keep in mind there is mostly seaice code in
1396        this experiment):
1397        > size mitgcmuv_ad
1398        text    data        bss     dec        hex
1399        5100659 1216  220458952  225560827  d71c8fb
1400        5339425 1200 1868783272 1874123897 6fb4dc79 (SEAICE_LSR_ADJOINT_ITER)
1401        but only a moderate increase of 36% for global_ocean.cs32x15:
1402        text    data        bss     dec        hex
1403        6695027 1648 1014578664 1021275339 3cdf6ccb
1404        6695203 1648 1382505320 1389202171 52cd8afb (SEAICE_LSR_ADJOINT_ITER)
1405      - note: there are still recomputations in global_ocean.cs32x15 and
1406        offline_exf_seaice and the gradient agreement changes (gets a
1407        little worse) for global_ocean.cs32x15 (-> update output_adm.seaice.txt)
1408      - in general, the AD gradients still are wrong
1409    o OpenAD
1410      - clean up code_oad/ directories somewhat by moving files
1411        dontCompile, dontTransform, keepOriginal to OAD_support/
1412    o model/src:
1413      - using MOM fluxform and Non-Lin Free-Surf with momDissip_In_AB=F
1414        (not currently tested): add dissipation terms before NLFS rescaling of
1415        tendencies (previously done after).
1416    o pkg/diagnostics:
1417      - write stats-diags in ascii file with more digits (same as in monitor).
1418    o pkg/down_slope:
1419      - drop the bi,bj dimension of argument recip_hFac in S/R DWNSLP_APPLY; with
1420        NLFS (not tested), use new recip_hFac value in order to conserve tracer.
1421    o model/src:
1422      - new file "apply_forcing.F" containing all the code previously in
1423        external_forcing.F, but with new argument list: pass, as new argument,
1424        the current level tendency array to update (instead of a direct update
1425        of the common bloc array). Change the corresponding calls.
1426      - add CPP option USE_OLD_EXTERNAL_FORCING (default is undef) to use
1427        EXTERNAL_FORCING_U,V,T,S subroutines (for backward compatibility).
1428    o pkg/seaice/seaice_lsr, a little bit of clean up
1429      - rearrange some code blocks, so that now all calculations for
1430        setting up the right-hand-sides done within one single block
1431        (I find that easier to read and understand)
1432      - rearrange freedrift-code to reduce the number of ifdefs
1433      - adjust some indentations and comments
1434    
1435    checkpoint64z (2014/07/10)
1436    o model/src and several pkgs:
1437      - change argument list of all S/R called from external_forcing.F and
1438        called from ptracers_forcing.F (renamed to ptracers_apply_forcing.F)
1439        to pass, as argument, the current level tendency array to update
1440        (instead of a direct update of the common bloc array).
1441      - change also (in the same way) argument list of PTRACERS_APPLY_FORCING;
1442      - rename taueddy_external_forcing.f to taueddy_tendency_apply.F
1443    o pkg/seaice/seaice_lsr.F
1444      - always initialize local arrays in seaice_lsr_tridiagu/v
1445      - add more local tapes to seaice_lsr_tridiagu/v
1446      - move storing u/vice(:,:,bi,bj) out of seaice_lsr_tridiagu/v, but
1447        keep it in bi/bj loop; this seems to be essential
1448      - gradients are still wrong but only by 4-7 orders of magnitude
1449        instead of 15 orders of magnitude, lab_sea improves a little
1450    o pkg/seaice
1451      - (pkg/autodiff) remove storing/restoring of seaiceMaskU/V that
1452        generates unnecessary code in seaice_lsr_ad
1453      - add more store directives in seaice_lsr to avoid unnecessary code
1454        in seaice_lsr_ad
1455      - exclude some residual computations in seaice_lsr when
1456        ALLOW_AUTODIFF_TAMC is defined in order to avoid unnecessary code
1457        in seaice_lsr_ad
1458      - add more storing, a new tape (model/src/the_main_loop.F) and
1459        another key for SEAICE_LSR_VECTORIZE_ZEBRA (the local keys ilockey
1460        and klockey should be checked by a specialist)
1461      - modify ( define SEAICE_VECTORIZE_LSR and SEAICE_LSR_ADJOINT_ITER )
1462        and update lab_sea after previous changes in pkg/seaice below
1463    o pkg/autodiff:
1464      - introduce useSmoothCorrel2DinAdMode, SEAICEapproxLevInAd, and
1465        viscFacInAd : run time parameters allowing for adjoint switches
1466        note : logic for useSmoothCorrel2DinAdMode is in ctrl_readparms.F
1467    o pkg/ecco:
1468      - introduce cost_gencost_boxmean.F that computes a box mean
1469        temperature (for use in adjoint sensitivity studies).
1470    o model/src/set_defaults.F : initialize viscFacAdj to 1.
1471    o pkg/mom_common/mom_calc_visc.F:
1472      - ifdef ALLOW_AUTODIFF then include viscFacAdj factor.
1473    o pkg/seaice/seaice_summary.F:
1474      - statement for SEAICEadjMODE now in autodiff_readparms.F
1475    o pkg/seaice:
1476      - remove some store directives and add new ones in an effort to get
1477        finally rid off the recomputation warnings. This is successful
1478        when SEAICE_VECTORIZE_LSR ***and*** SEAICE_LSR_ADJOINT_ITER are
1479        defined (i.e. no extensive recomputation warnings left), but there
1480        are still too many recomputations on the solver iteration level
1481      - define SEAICE_VECTORISZE_LSR in offline_exf_seaice/code_ad/SEAICE_OPTIONS.h
1482      - move definition of MPSEUDOTIMESTEPS into TAMC-block in
1483        SEAICE_SIZE.h
1484      - add a store directive in S/R seaice_calc_viscosities
1485    o pkg/seaice (ITD code):
1486      - fix definition of Hlimit for multi-threaded case
1487      - use double precision arithmetic to compute Hlimit: this affects results;
1488        update output of experiment seaice_itd.
1489    o replace content of verification/seaice_itd
1490      - instead of a 1D column use the configuration of offline_exf_seaice
1491        to test the ice thickness distribution code with ridging
1492      - this is a first shot at this experiment
1493      - change of some defaults of ridging parameters SEAICEhStar (from
1494        100 to 25) and SEAICEmuRidging (from 5 to 3) in seaice_readparms.F
1495        and lot of new comments.
1496    
1497    checkpoint64y (2014/06/20)
1498    o pkg/seaice/seaice_reg_ridge.F:
1499      - modify the regularization of very small volumes of ice; only check
1500        total volume HEFF, and do not apply correction to individual ice
1501        classes because that leads to funny patterns in the heat and fw-fluxes
1502        into the ocean. Adjust seaice_itd/results/output.txt
1503      - replace nITD by SEAICE_multDim in loop-ranges
1504    o pkg/exf:
1505      - add code to process the case field period = -12. with UV interpolation.
1506      - move debug print (formerly active when exf_verbose=T) from EXF_getFFieldRec
1507        into S/R that calls it (i.e., exf_set_gen.F, exf_set_uv.F & obcs_exf_load.F)
1508    o verification/global_with_exf:
1509      - switch all fields period to -12. (was previously untested) in input/data.exf
1510        (but keep secondary test ".yearly" unchanged); update the reference output.
1511    o pkg/cal:
1512      - new calendar type "noLeapYear" for 365 days calendar without any leap year.
1513    o pkg/exf:
1514      - new integer parameter "exf_debugLev" (default set to main model debugLevel)
1515        to replace logical switch "exf_verbose"
1516      - report in STDOUT when loading a new record (if exf_debugLev >= 3)
1517    o pkg/sbo:
1518      - update from Katherine Quinn: evaluate mass directly from density and SSH
1519        (budget using Finite Volume method) instead of from bottom pressure.
1520      - allow testreport to collect few selected SBO output ; tested in exp.
1521        global_ocean.90x40x15 (after updating the results, to include SBO output).
1522      - fix some multi-threading issues (in output part).
1523    o model/src & most packages:
1524      - always call {PKG}_READPARMS even if corresponding use{PKG}=F;
1525      - in {PKG}_READPARMS, in case use{PKG}=F: add a call to new S/R
1526        PACKAGES_UNUSED_MSG to print a weak warning when parameter file
1527        "data.{pkg}" exist ; and leave the S/R (return) just after.
1528      - more standard LAND pkg interface (land_init_fixed.F, land_check.F).
1529        + call LAND_READPARMS from packages_readparms.F
1530    o pkg/seaice:
1531      - remove code that resets useThSice in S/R seaice_readparms and
1532        replace it by a warning in S/R seaice_check
1533      - remove parameter MULTDIM, replace with nITD and runtime
1534        parameter SEAICE_multDim (still hard-wired to nITD if
1535        SEAICE_ITD is defined)
1536    
1537    checkpoint64x (2014/05/24)
1538    o verification/lab_sea:
1539      - update adjoint and TLM output following changes to pkg/salt_plume
1540      - un-do the update after putting back local recip_Cp in few places.
1541    o pkg/salt_plume: modifications by An Nguyen:
1542      - add capability to do brine rejection (salt-plume) as function of
1543        volume+tracers (instead of only salinity tracer).
1544      - conserve volume by exchanging volume from each kLev to above to
1545        accommodate in-coming brine volume
1546      - store surface and klev exchanged fraction + volume in 4 new 3-d arrays
1547      - switch KPP surf buoyancy due to brine forcing to 3-d
1548        (3 more 3-d arrays, 2 for SPforcing[T,S], 1 for boplume)
1549      - add salt_plume_volfrac, salt_plume_apply, salt_plume_tendency_apply_t
1550      - unrelatedly, also add ad-hoc capability to vary salt_plume scheme
1551        in East/West Arctic.
1552    o pkg/sbo:
1553      - incorporate modifications from Katherine Quinn to enable the use of sbo
1554        pkg in ECCO-v4 set-up ; remove SBO-TimeAve output ; add monitor-like
1555        output for future testreport verification (unfinished).
1556    o pkg/atm_phys:
1557      - change diagnostics (AtPh_Trf & AtPh_Qrf) of DARGAN_BETTSMILLER S/R:
1558        skip the reseting of t_ref & q_ref to initial t & q ; this preserve the
1559        output of S/R CAPECALCNEW (Parcel temp & q) for diagnostics.
1560    o pkg/seaice
1561      seaice_calc_ice_strength.F: modify expression to avoid divisions
1562        (affects truncation)
1563      seaice_do_ridging.F: clean up the insectarium
1564      - fix a bug that was compensated by areaScaling (-> remove areaScaling code)
1565      - added SEAICEsnowFracRidge to redistributed snow (2nd bug)
1566      - set closing/openingRate to zero where no extra iteration is need (3rd bug)
1567      - add some debugging information and error messages (warnings)
1568    o model/src: modifications relatd to atmosphere p*:
1569      - Switch to more accurate p* coordinate slope term (calc_grad_phi_hyd.F)
1570      - With p* or Sigma-P, use constant reference Pot.Temp (thetaConst) instead
1571        of vertical profile tRef in geopotential background and anomaly.
1572      - Acount for true p* correction in theta <-> T conversion in pkg/aim_v23
1573        and pkg/atm_phys.
1574      - Update FWD output of experiments: aim.5l_cs (x2), fizhi-cs-32x32x40,
1575        fizhi-cs-aqualev20, fizhi-gridalt-hs, tutorial_held_suarez_cs, cpl_aim+ocn.
1576    o pkg/seaice: fix a bug in seaice_prepare_ridging.F, forgot a sqrt
1577    o pkg/ptracers: compute ptracer source/sink due to linear free surface.
1578        not used right now, but can be used in BGC packages to fix conservation.
1579    o pkg/dic, pkg/gchem: move tracer_meanarea to gchem, so it can be used by
1580        other packages too.
1581    o pkg/seaice/seaice_calc_ice_strength.F: replace SEAICE_rhoSnow by
1582        SEAICE_rhoIce in the Rothrock (1975)-type strength calculations (bug fix)
1583    o model/src:
1584      - since we have several heat capacity (even in model/src), define "recip_Cp"
1585        as local variable (no longer in common block) to avoid any confusion.
1586      - add thetaConst in PARAMS.h (to be used with pStar or sigma-P coords).
1587    o pkg/exf:
1588      - from Jeff Scott: add option (#define EXF_CALC_ATMRHO) to calculate local
1589        air density as function of air Temp, Humidity and atm pressure.
1590    
1591    checkpoint64w (2014/05/02)
1592    o verification:
1593      - update output_adm.txt files for experiment global_ocean.cs32x15 (seaice &
1594        seaice_dynmix) and lab_sea (primary test & noseaicedyn): moving/changing
1595        code from seaice_growth.F & seaice_advdiff.F to new ridging routines
1596        seaice_reg_ridge.F seaice_do_ridging.F affects AD gradient
1597        (down to 8-7 matching digits for global_ocean and 5-6 for lab_sea).
1598    o model/src: for atmosphere in p* coords:
1599      - store factor rStarFacC**atm_kappa (= pStarFacK) in common block
1600      - implement more accurate p* coordinate slope term (in calc_grad_phi_hyd.F),
1601        but not yet activated.
1602    o pkg/seaice: fix restart problem for ITD with new ice strength parameterisation:
1603      - move computation of opnWtrFrac = 1-AREA to before computing ice strength
1604      - this changes the results (but not for any verification experiment, because
1605        none tests this), but avoids having an extra field in the restart files
1606    o pkg/seaice: remove global variable TICE (not needed)
1607      - replace by TICES or local variable where necessary (cost_seaice_test,
1608        seaice_diagnostics_state)
1609      - move copying TICE to TICES from seaice_check_pickup to seaice_read_pickup
1610      - use specific read/write routines for reading and writing individual leves
1611        of a multilevel field
1612    o pkg/ctrl & model/inc:
1613      - move additional anomaly fields of control vars (related to options:
1614         ALLOW_KAPGM_CONTROL, ALLOW_KAPREDI_CONTROL and ALLOW_BOTTOMDRAG_CONTROL)
1615        from DYNVARS.h into new header file: CTRL_FIELDS.h
1616    o pkg/seaice: some small modifications to the ridging code
1617      - make fw2ObyRidge a global variable and add the freshwater flux to
1618        seaice_growth
1619      - pass actual thickness from seaice_prepare_ridging, so that it is
1620        computed only in one place and compute it in the same way as in
1621        seaice_growth
1622      - initialise more fields in seaice_do_ridging that where cause floating
1623        point exceptions over land
1624    o pkg/seaice: preparations for ridging code and first real ridging code
1625      - move most of "PART 1" of S/R seaice_growth into a new and separate
1626        S/R seaice_reg_ridge that will both regularize the state variable after
1627        advection call the actual ridging routine;
1628      - requires to make 5 fields global fields: d_HEFFbyNEG,d_HSNWbyNEG,
1629        d_AREAbyRLX,d_HEFFbyRLX,saltFluxAdjust;
1630      - remove ridging code from seaice_advdiff
1631      - clean up remaining part 1 of seaice_growth in an attempt to make it
1632        more readable (this is probably subjective)
1633      - call seaice_itd_redist once in the initialisation phase to have the initial
1634        conditions in the correct category
1635      - finally: add new ridging routine for ITD code
1636    
1637    checkpoint64v (2014/04/11)
1638    o pkg/ecco:
1639      - add runtime parameters mdt[start,end]date[1,2]
1640      - rename variable "tpmean" as "mdt" and "topexmeanfile" as "mdtdatfile"
1641    o pkg/seaice:
1642      - make deltaC a global variable, so that it can be used in ridging code
1643      - first step towards ridging: introduce new routines that compute
1644        ice strength based on ridging parameters
1645      - add diagnostic for HSNOWITD
1646      - add opnWtrFrac as a global variable (required for ridging scheme)
1647    o pkg/salt_plume + pkg/seaice/seaice_growth.F
1648      - add SALT_PLUME_IN_LEADS flag to activate pkg/salt_plume only when ice
1649        AREA exceeds a threshold (code contributed by I.Fenty in 2011)
1650    o verification/hs94.1x64x5:
1651      - leave ALLOW_AUTODIFF_TAMC undefined in code_oad/AUTODIFF_OPTIONS.h
1652      - do not use ECCO_CPPOPTIONS.h anymore for TAF & OpenAD Adjoint tests.
1653    o autodiff:
1654      - Start to include explicitly AUTODIFF_OPTIONS.h, COST_OPTIONS.h,
1655        and CTRL_OPTIONS.h in src files (to enable to skip the ECCO_CPPOPTIONS.h)
1656        For now, only in pkgs used in verification/hs94.1x64x5.
1657      - Replace ALLOW_AUTODIFF_TAMC by ALLOW_AUTODIFF (except for tape/storage
1658        which are specific to TAF/TAMC).
1659      - Replace ALLOW_AUTODIFF_OPENAD by ALLOW_OPENAD:
1660        since ALLOW_OPENAD is defined in PACKAGES_CONFIG.h (any time pkg/openad
1661        is compiled), this simplifies/reduces which *_OPTIONS.h file to include.
1662      - OpenAD: change Makefile to generate the appropriate AD_CONFIG.h when
1663        building mitgcmuv_ad (make adAll).
1664    o pkg/ecco:
1665      - cost_gencost_seaicev4.F:
1666         reformulate proxy cost as function of sst and local param SEAICE_freeze
1667         change cost names from siv4-[sst,vol] to siv4-[deconc,exconc]
1668      - add stop statement if old names siv4-[sst,vol] are used
1669      - add snapshots + cost reports for atmospheric longwave
1670      - remove factor 0.1 in front of wtau[u,v]
1671      - replace never used flag ALLOW_TMI_COST_CONTRIBUTION with
1672         ALLOW_TMI_SST_COST_CONTRIBUTION
1673    o pkg/atm_phys:
1674      - add some diagnostics for Short-wave and for convection S/R.
1675    o pkg/seaice/seaice_growth:
1676      - fix a bug in the lateral melt parameterization for SEAICE_ITD
1677        in seaice_growth; tempFrz needs to be computed inside the i/j-loop
1678      - rearrange loop order for better vector code in the same code block
1679      - rewrite the floeDiameter formula to have fewer divisions
1680      -  (miraculously) none of this changes the results of seaice_itd
1681    o pkg/smooth:
1682      - move param smooth2Ddiffnbt to pkg/ecco
1683    o pkg/salt_plume:
1684      - salt_plume_frac.F:
1685         clean up local param names
1686         reformulate (1-frac) to frac; original 1-frac was based on swfrac code
1687    o pkg/rw:
1688      - add RS version of S/R READ_MFLDS_LEV.
1689    o pkg/streamice:
1690      - fix the restart test by writing/reading pickup_streamice files.
1691    o pkg/seaice:
1692      - refine checks for jfnk-related parameters
1693      - comment out if statement with SEAICEuseIMEX parameter as long as there
1694        is no IMEX code to avoid confusion and surprises
1695    
1696    checkpoint64u (2014/03/07)
1697    o verification/MLAdjust:
1698      - rename secondary test suffix:
1699         1.leith  -> A4FlxF  + switch to flux-form & add side-drag
1700         0.leithD -> AhFlxF  + switch to flux-form
1701         0.smag   -> AhVrDv  (use Vorticity-Div. visc form) + add side-drag
1702         0.leith  -> AhStTn  (use Strain-Tension visc form) + add side-drag
1703    o pkg/mom_vecinv:
1704      - remove unused arguments from S/R MOM_VI_HDISSIP & MOM_HDISSIP (as it used
1705        to be before mom_calc_visc.F)
1706      - skip the call to MOM_CALC_TENSION & MOM_CALC_STRAIN if not needed.
1707      - add 2nd copy of vort3 & strain that knows about lateral BC (free/no slip):
1708        this is simpler for the adjoint and for diagnostics.
1709    o model/src + pkg/momentum:
1710      - add input files for  2-D additional Western and Southern cell-edge wall
1711         (e.g., to add "thin-wall" where it is =1).
1712      - fix sideDrag option for thin-walls with Non-Lin Free-Surf
1713        using 2nd hFacZ that is computed from initial (fix domain) hFac
1714      - known limitations of thin wall implementation: not yet coded for sigma
1715        coords; not working with CD-scheme neither.
1716    o pkg/seaice:
1717      - rename recently introduced parameters from (wrong name) AB to
1718        BDF (backward difference time discretisation)
1719      - retire runtime parameters SEAICEuseAB2, SEAICE_abEps
1720    o tools/adjoint_options:
1721      - remove setting of "OPENAD=true" (now set by command line "genmake2 -oad")
1722    
1723    checkpoint64t (2014/02/01)
1724    o pkg/ecco
1725      - add compile flag ALLOW_GENCOST_TIMEVARY_WEIGHT in ECCO_OPTIONS.h and
1726        runtime logical flag gencost_timevaryweight to read daily sea-ice sigma
1727      - replace hard-coded record number and period which only work for monthly
1728        with read-in runtime param that works for other periods (month,day,year)
1729    o pkg/thsice
1730      - corrected store directive fixes thsice adjoint gradient checks
1731    o genmake2 & testreport:
1732      - add genmake2 option "-oad" to generate a Makefile for OpenAD built and
1733        in this case, use tools/adjoint_options/adjoint_oad as default AD optfile.
1734        Update testreport accordingly. No need to set "export OPENAD=true"
1735        in adjoint_options/adjoint_oad anymore (will be removed later).
1736    o pkg/shelfice:
1737      - put T & S shelfice forcing into model surfaceForcing_T,_S (for now,
1738        only if SHELFICEboundaryLayer=F); Change model/src/external_forcing.F
1739        so that surface forcing applies to k=kSurf if using pkg/shelfice.
1740    o pkg/ctrl, pkg/grdchk, pkg/ecco:
1741      - Changes to make GENARR more modular (i.e. invisible if not used)
1742    o model/src/temp_integrate.F and salt_integrate.F
1743      - re-include store directives that were removed on Dec 27th.
1744    o model/src/external_forcing_surf.F
1745      - add storage directives for EmPmR and PmEpR to avoid recomputation of
1746        seaice_model in the adjoint that is problematic when seaice_model is
1747        turned off in the adjoint. The resolved issue dated back to July when
1748        EXTERNAL_FORCING_SURF call was moved.
1749        Update global_ocean.cs32x15/*/output_adm.seaice_dynmix.txt accordingly.
1750    o pkg/exf/exf_check.F
1751      - fix a small bug again (originally found by Wentao Liu, now found again)
1752      - streamline error output
1753    o pkg/streamice and aim_v23:
1754      - replace a few "_EXCH_XY_RL (" with "_EXCH_XY_RL(", so that
1755        Apple's /usr/bin/cpp knows what to do:
1756        Apple LLVM version 5.0 (clang-500.2.79) (based on LLVM 3.3svn)
1757        Target: x86_64-apple-darwin13.0.0
1758    
1759    checkpoint64s (2014/01/05)
1760    o tools/adjoint_options:
1761      - switch to fastopt.net TAF server (instead of default fastopt.de) for
1762        AD optfiles adjoint_diva & adjoint_f95 (similar to adjoint_default).
1763    o model/src:
1764      - remove some unnecessary TAF storage directives in forward_step.F and
1765        in dynamics.F (note: not always removed by TAF, e.g., double storage
1766        of kappaRU,kappaRV in former version of dynamics.F).
1767    o model/src & pkg/ptracers:
1768      - call directly GAD_IMPLICIT_R & IMPLDIFF + DWNSLP_APPLY from temp_integrate.F
1769        salt_integrate.F and ptracers_integrate.F (instead of from thermodynamics.F)
1770        and remove ptracers_dwnslp_apply.F & ptracers_implicit.F
1771      - call MATRIX_STORE_TENDENCY_EXP for each tracer (in ptracers_integrate.F)
1772      - add fZon & fMer as output argument of S/R GAD_CALC_RHS.
1773      - update TAF AD-output of experiments global_ocean.90x40x15 (13 for AD-grad).
1774    o useSingleCpuInput separates single-CPU input from single-CPU output;
1775        for now only implemented for in exf_interp_read.F
1776    o verification/advect_xy:
1777      - fix missing EXCH call in local version of ini_salt.F and update output.
1778    o momentum diagnostics:
1779      - fix which deltaT is used in Total-Tendency diagnostics.
1780      - fix typo in diagnostics for momentum tendency from AB.
1781    o pkg/seaice/seaice_lsr.F: fix an initialisation bug for the
1782        SEAICE_VECTORIZE_LSR_ZEBRA option that lead to NaNs on a NEC-SX8
1783    
1784    checkpoint64r (2013/12/08)
1785    o verification/*/results:
1786      - Update reference output of experiments that were passing with just 13 digits
1787         (make it easier to detect future changes in results)
1788    o model/src & pkg/ptracers:
1789      - move calls to GAD_ADVECTION (Multi-Dim advection) from thermodynamics.F to
1790        inside temp_integrate.F and salt_integrate.F and from ptracers_advection.F
1791        to inside ptracers_integrate.F ; remove ptracers_advection.F
1792    o coupling interface pkgs:
1793        [atm_compon_interf, ocn_compon_interf & atm_ocn_coupler]
1794      - change the config check to test the agreement of Ocean Depth
1795        with ATM land/sea mask (instead of ATM orography);
1796      - send to coupler the number of coupler time-steps to do for this run:
1797        this allows to check for consistency and don't need anymore to be
1798        specified in parameter file "data";
1799      in coupler:
1800      - check consistency of RunOff map versus Ocean Depth and ATM land/sea mask.
1801      - improve report to log-file of config setting (pass log-file unit to few S/R)
1802    o pkg/compon_communic:
1803      - add coupling send/receive for non-tiled integer vector;
1804      - add S/R to check and stop if any proc has an error (similar to
1805        eesupp/src/stop_if_error.F but single thread and across Comm_World).
1806    o pkg/exch2:
1807      - in exch2*_get_rx[1,2]: use new list "W2_tileIndex" to replace search
1808        through list of all tiles my proc owns.
1809    o model/src:
1810      - AUTODIFF only: in calc_adv_flow.F, recompute rTransKp (instead of copying
1811        from rTrans) to simplify dependencies (no need to store rTrans anymore in
1812        calling S/R); this affects AD results at machine truncation level:
1813        update AD-output (TAF) of experiments: 1D_ocean_ice_column,
1814        bottom_ctrl_5x5 & obcs_ctrl (12 digits for AD grad, same FWD grad).
1815    o tools/build_options:
1816      - simplify Warnings options (-ieee & -devel cases) in linux_amd64_gfortran
1817    o coupling interface pkgs:
1818        [compon_communic, atm_compon_interf & ocn_compon_interf]
1819      - move declaration of local array "ibuf" out of header file "CPLR_SIG.h"
1820        to each S/R that needs it; remove un-used variables.
1821      - change component tile registration (cpl_register.F in both compon_interf
1822        and mitcomponent_tile_register.F) to pass the full list of tiles
1823        information (including bi,bj) in 1 vector (instead of in a bi,bj matrix).
1824      - with pkg/exch2: adopt the same convention used for I/O to define mapping
1825        towards coupler global array (unless W2_useE2ioLayOut=F):
1826         a) can now use different tiling between atm & ocn comp.
1827         b) no needs to modify the run-Off map when changing tiling (was needed
1828            even if using the same tiling between atm & ocn).
1829         c) will allow to run with blank-tiles in 1 component (e.g., for ocean
1830            full land tiles); not yet tested.
1831      - check for valid mapping from comp. tile to coupler global array
1832      - improve report of tile registration results to log file.
1833    o pkg/exch2:
1834      - in eesupp/src/eeboot.F: move call to W2_EEBOOT before Coupler
1835        tile-registration (CPL_REGISTER);
1836      - activate (un-comment) definition and setting of "W2_tileIndex" list to
1837        store the local bi,bj indices of each tile;
1838      - also print bi,bj in local report to log file;
1839      - fix pkg/debug/debug_cs_corner_uv.F for the case nSy > 1 (left from
1840        Jun 2009 modif of pkg/exch2).
1841    o testing on baudelaire:
1842      - run 2 tests at a time: no significant slow down (since enough cpu) and
1843        get the full set of test done earlier
1844      - switch the ifort test to "-devel" ; run the OpenAD test everyday.
1845    o model/src/thermodynamics.F and routines called from it:
1846      - pkg/gmredi: gmredi_residual_flow.F (replacing gmredi_calc_uvflow.F &
1847        gmredi_calc_wflow.F) to update eulerian velocity (input) into residual
1848        velocity (outp) by adding bolus velocity.
1849      - model/src: calc_adv_flow.F (replacing calc_common_factors.F) to compute
1850        mass transport from velocity + lateral grid cell area
1851      - rename calc_gt.F to temp_integrate.F (includes call to TIMESTEP_TRACER)
1852      - rename calc_gs.F to salt_integrate.F (includes call to TIMESTEP_TRACER)
1853     in thermodynamics.F
1854      - remove k from thermodynamics.F and move it to temp_integrate.F
1855        salt_integrate.F and ptracers_integrate.F (now done inside the tracer
1856        loop).
1857      - compute locally (in thermodynamics.F) 3-D velocity field that is used to
1858        advect tracers; pass it as argument to GAD_ADVECTION, GAD_SOM_ADVECT,
1859        PTRACERS_ADVECTION, TEMP_INTEGRATE, SALT_INTEGRATE, PTRACERS_INTEGRATE,
1860        GAD_IMPLICIT_R and PTRACERS_IMPLICIT
1861      - update AD-output (TAF & OAD) of experiments: 1D_ocean_ice_column,
1862        global_ocean.90x40x15, tutorial_global_oce_biogeo and
1863        tutorial_tracer_adjsens (+ TLM output).
1864    o tools/OAD_support and (verification/*/) code_oad:
1865      - OAD_support/cb2mGetModules.csh: add PACKAGES_CONFIG.h in header file to
1866        module conversion ; remove unneeded CPP_EEOPTIONS.h.
1867      - code_oad/CPP_OPTIONS.h: remove PACKAGES_CONFIG.h and use a more standard
1868        version (closer to model/inc/CPP_OPTIONS.h).
1869    o model/src:
1870      - remove parameter "useOldFreezing" from PARAMS.h and push it to the
1871        retired list of parameters (routine FREEZE has been replace by surface
1872        freezing (10.yrs ago) and by pkg/frazil (interior freezing).
1873    o pkg/gmredi:
1874      - add option (GM_CALC_TRANSP_FROM_VEL) to compute transport directly from
1875        velocity (same scheme but affects machine truncation) for GM_AdvForm.
1876      - update output of FWD experiments: front_relax.bvp,
1877        global_ocean.90x40x15.dwnslp, global_ocean.cs32x15 and ideal_2D_oce.
1878    
1879    checkpoint64q (2013/11/17)
1880    o verification:
1881      - generate new output on baudelaire (gfortran, -ieee) for OpenAD experiments
1882        tutorial_global_oce_biogeo and global_ocean.90x40x15.
1883      - generate new output (growth & melt) for seaice_itd experiment after
1884        updating the input pickup_seaice files (previously wrong).
1885    o pkg/cost:
1886      - define a "final cost function" for each tile, and use GLOBAL_SUM_TILE_RL
1887        (instead of _GLOBAL_SUM_RL) to get the final cost from all procs & threads:
1888        o this fixes global-sum value if multi-threads (since GLOBAL_SUM_RL
1889          cannot be applied to var in common block).
1890        o allows to get results independent of tile-per-proc setting (if using
1891          slower GLOBAL_SUM_SEND_RECV option).
1892      - update accordingly: seaice_cost_final.F, shelfice_cost_final.F,
1893        thsice_cost_final.F and ecco_cost_final.F (this one affects lab_sea
1894        forward gradients: update output).
1895      - update */code_oad/externalDummies.F by adding dummy GLOBAL_SUM_TILE_RL
1896        S/R and, for most exp., also comment out GLOBAL_SUM_R8.
1897    o pkg/mom_common:
1898      - move to pkg/mom_common and model/src (previously in tutorial_deep_convection
1899        code) 2nd version of isotropic 3-D Smagorinsky code interface: strain and
1900        viscosity are locally declared in dynmics.F and pass as argument to CALC_GW;
1901        ensure that all field value that are used are set.
1902    o tutorial_deep_convection (smag3d):
1903      - add missing scaling in mom_calc_smag_3d.F;
1904      - set smag3D_coeff in input.smag3d such that results do not change.
1905    o pkg/dic:
1906      - change dic_cost.F to compute cost on each tile first and then apply
1907        GLOBAL_SUM_TILE_RL: this affects forward gradient of AD experiments
1908        tutorial_dic_adjoffline & tutorial_global_oce_biogeo; update output.
1909      - remove kLev argument and use GLOBAL_SUM_TILE_RL in tracer_meanarea.
1910    o eesupp/src & pkg/mdsio:
1911      - remove gather/scatter_vector.F (from eesupp) and mdsio_read/writevector.F
1912        (from pkg/mdsio) since they are no longer used for tape IO.
1913      - move simple C subroutine "setdir.c" from pkg/compon_communic to eesupp/src
1914        (+ keep a copy in pkg/atm_ocn_coupler).
1915    o verification/isomip:
1916      - split domain in 8 squared tiles (instead of just 2) for FWD, AD & OAD tests.
1917    o tools/build_options:
1918      - optfile linux_amd64_ifort11, fast (no ieee) case:
1919        to get a working restart for all experiments, add "-fp-model source"
1920        to FOPTIM (also remove "-opt-streaming-stores auto" <- this is the default).
1921    
1922    checkpoint64p (2013/10/20)
1923    o pkg/autodiff:
1924      - adread_adwrite.F: when type and length do not match ALLOW_AUTODIFF_WHTAPEIO
1925        criteria, return to simple (default) tape IO format.
1926    o pkg/mdsio (+ eesupp/src):
1927      - rewrite/simplify tape-IO S/R (new S/R MDS_READ/WRITE_TAPE replace
1928        previous MDSREAD/WRITEVECTOR) with 2 array argument from each type (R4/R8);
1929      - fix globalFile and singleCpuIO options using simpler global mapping.
1930      - new pairs of scatter/gather vector S/R (one for each type, generated from
1931        template) corresponding to simpler global mapping.
1932      - adread_write.F: switch to new S/R (but leave old calls commented) and write
1933        to globalFile when parameter globalFiles is set to True.
1934      - switch on useSingleCpuIO in AD experiments: global_ocean.90x40x15 & isomip.
1935    o pkg/autodiff:
1936      - adread_adwrite.F: add a hack for RS arrays (when RS=real*4);
1937        with ALLOW_AUTODIFF_WHTAPEIO defined, since corresponding (real*4) is
1938        missing, just add a STOP if array type do not match.
1939    o pkg/exf:
1940      - to allow to use seaice-fraction from pkg/exf in other pkgs than pkg/seaice:
1941         rename CPP option EXF_ALLOW_SEAICE_RELAX to EXF_SEAICE_FRACTION
1942         and rename array obsSIce to exf_iceFraction.
1943    o tutorial_deep_convection:
1944      - add 1rst version of isotropic 3-D Smagorinsky code (from Louis-Philippe),
1945        for now all in this exp. code dir.
1946      - add secondary test using Smag-3D viscosity (keep very low backgroud visc for
1947        testing) and flux-limter advection scheme for Temp. (no explicit diffusion).
1948    o eesupp/src:
1949      - added SINGLE_DISK_IO option because reading of parameter files on
1950        very large number of processors did not work with existing set-up
1951    
1952    checkpoint64o (2013/09/25)
1953    o pkg/atm_phys & atm_compon_interf:
1954      - allows for coupling of gray-atmosphere (atm_phys) with ocean.
1955    o tools/build_options:
1956      - switch from "-fPIC" to "-mcmodel=medium" in optfiles: linux_amd64_gfortran
1957        & linux_amd64_ifort11 and in linux_amd64_g77 & linux_amd64_open64 also
1958        remove CPP setting (was identical to genmake2 default).
1959    o pkg/gmredi & model/src: Some updating and work done on the residual model.
1960      - created new file model/src/calc_eddy_stress.F to calculate the eddy stress.
1961      - fixed up the calculation of the eddy stress and how it is added to the
1962        external forcing via taueddy_external_forcing.F
1963      - at the moment, it is very experimental and only works with the variable eddy
1964        diffusivity calculated in gmredi_k3d.F
1965    o pkg/seaice/seaice_check.F: add a check to catch the case of specifying
1966        lw/swfluxfile instead of lw/swdownfile in data.exf together with pkg/seaice
1967    o testreport (& tools/do_tst_2+2):
1968      - for MPI test, set default COMMAND to 'mpirun -v -np TR_NPROC ./{executable}'
1969    o tools/build_options: linux_amd64_gfortran & linux_amd64_ifort11:
1970      - remove CPP='cpp -traditional -P' (this is genmake2 default)
1971      - add switch (for big setups) to use 'medium' memory-model (but leave it
1972        commented out for now). Note: needed with FC 19 to compile big setups.
1973    o pkg/atm_compon_interf:
1974      - regroup per field origin (model & pkgs) the coupling storage routines
1975         (which accumalate in time each coupling field)
1976      - move bi,bj loops inside atm_store_my_data.F and store also wind-stress;
1977        update accordingly + simplify aim_do_physics.F
1978    
1979    checkpoint64n (2013/08/26)
1980    o pkg/bbl:
1981      - update formulation to reduce dispersion of tracer properties in bbl
1982      - replaced horizontal and vertical transport parameters with velocities
1983      - changes results for verification/global_with_exf.yearly
1984    o verification/halfpipe_streamice:
1985      - change to matrix construction; update both Fwd & AD output.
1986    o verification/tutorial_tracer_adjsens:
1987      - OpenAD test: switch to vector-invariant momentum since fluxform with
1988        rStar causes problems with OpenAD; update output.
1989    o tools:
1990      - genmake2: define a common prefix for all temp-file names ; move them
1991        to local /tmp disk (but would be easy to move them back);
1992      - xmakedepend: apply the same switch for temp-files.
1993    o pkg/offline:
1994      - changes for use with rStar (NLFS): assume that we continue to provide
1995        UVELMASS/hFacW_ini & VVELMASS/hFacS_ini (hFacWi,S_ini as written in grid
1996        output files) and apply r* scaling at each time-step (function of the time
1997        varying Eta field); use normal pickup files (needed for restart with NLFS).
1998    o adjoint with OpenAD:
1999      - move OpenAD-specific files from verification/OpenAD/code_oad_all to a new
2000        package openad.  This package has to be compiled for all runs with OpenAD
2001        instead of specifying code_oad_all as a modification directory.
2002      - link the fortran templates from tools/OAD_support to the build directory
2003        for preprocessing to avoid conflicts between different setups compiled
2004        simultaneously and simplify cleanup.
2005    o pkg/exf:
2006      - in exf_getforcing.F: comment out most of the EXCH calls (fields used by
2007        main model or other pkgs are exchanged in EXF_MAPFIELDS).
2008    o model/src:
2009      - do_stagger_fields_exchanges.F: skip EXCH calls when using pkg/offline
2010        (similar to do_fields_blocking_exchanges.F).
2011    o tools/genmake2:
2012      - remove TAF output src code just before calling staf (when not doing a fresh
2013        built, will stop if things go wrong with staf).
2014      - fix target "adobj" (left from TAF version-2 transition)
2015    o pkg/diagnostics:
2016      - add a parameter to track the status of pkg/diagnostics activation;
2017        this replace/extend the use of logical param "settingDiags" (to check
2018        when adding diag to the list) to also check any DIAGNOSTICS_[]FILL* call.
2019        New S/R to print error message and stop when pkgStatus is not right.
2020      - to try: add a warning when "data.diagnostics" exist but useDiagnostics=F.
2021    
2022    checkpoint64m (2013/08/13)
2023    o model/inc:
2024      - move FCORI_MACROS.h from PARAMS(_MACROS).h to GRID_MACROS.h (left from
2025        8 yrs ago modif when Coriolis arrays were moved from PARAMS.h to GRID.h)
2026    o pkg/kpp & aim_v23:
2027      - only call DIAGNOSTICS_FILL when useDiagnostics=TRUE.
2028    o pkg/seaice:
2029      - restore (last time on 2011/12/24) ability to compile pkg/seaice with
2030        undefined pkg/exf ALLOW_ATM_TEMP or ALLOW_RUNOFF CPP-options.
2031      - only call DIAGNOSTICS_FILL when useDiagnostics=TRUE.
2032    o eesupp/src:
2033      - fix check for overlap-size argument (myOLn.GT.MAX_OLY_EXCH)
2034        in exch1_rx[_ad].template (thanks to Francois Lefeuvre report).
2035    o switch to TAF version-2:
2036      - add flow directives to "freeze" naming convention for ad-routines that
2037        are used in I/O routines of adjoint state and associated common blocks
2038        that are used in adcommon.h (backward compatible with version-1)
2039      - update all ad-optfiles (in tools/adjoint_options + few local to some
2040        verification exp) to switch to latest TAF version (currently 2.5.5);
2041        merge "*_mpi" adoptfiles into the corresponding non-mpi (but commented
2042        out except for diva).
2043      - the major change with TAF version-2 is that both the differentiated
2044        routines and the forward routines (new) are returned as part of the TAF
2045        output source code. Update genmake2 accordingly.
2046      - new output for AD experiment tutorial_global_oce_biogeo (better AD gradient
2047        with version-2 when compared to TLM or FWD gradient); other experiments
2048        output show minor changes (machine truncation level); update the few AD &
2049        TLM output with 12 matching digits only (some prior to version-2 switch).
2050    
2051    checkpoint64l (2013/08/05)
2052    o model/src:
2053      - in dynamics.F, skip the call to CALC_VISCOSITY if momViscosity=F
2054      - main_do_loop.F: no longer includes additional (AUTODIFF) header files
2055        when using TAF but only if using OpenAD.
2056    o pkg/mom_common+fluxform+vecinv:
2057      - always set horiz. viscosity arrays to background value before calling
2058        MOM_CALC_VISC (in MOM_FLUXFORM & MOM_VECINV) and call S/R MOM_CALC_VISC
2059        only when using variable horiz. viscosity (useVariableVisc=T);
2060      - simplify mom_vecinv.F (only 1 block for momViscosity).
2061    o pkg/mom_common: variable horiz. viscosity in NH code
2062      - move horiz-viscosity 3-D arrays viscAh_W & viscA4_W (used in calc_gw.F)
2063        from model/inc/NH_VARS.h to pkg/mom_common/MOM_VISC.h
2064      - store in common block (in MOM_VISC.h) logical parameters: useHarmonicVisc,
2065        useBiharmonicVisc & useVariableVisc.
2066      - fix old bug (already in 1rst implementation of variable horizontal viscosity
2067        in calc_gw.F, version 1.27, 2006/06/20):
2068        horizontal bi-harmonic viscosity in gW was missing when wiscA4W=0
2069        even if variable bi-harmonic viscosity (e.g., viscA4Grid) was non-zero.
2070      - change background horiz viscosity in vertical momentum (gW) to always be
2071        viscAhW,viscA4W (instead of switching to viscAhD, viscA4D when using
2072        any type of variable viscosity, e.g., viscAh/4Grid)
2073      - change default value of viscAhW,viscA4W to viscAhD,viscA4D (instead of
2074        viscAh,viscA4) which default to viscAh,viscA4 :  this avoid missing
2075        horiz. viscosity in W eq when just setting viscAhD/Z,viscA4D/Z (since
2076        default viscAh,viscA4 is zero).
2077    o model/src:
2078      - extend length of drC & recip_drC from Nr to Nr+1.
2079  o Divided Adjoint (DIVA) with MPI:  o Divided Adjoint (DIVA) with MPI:
2080    - genmake2: do not create local ./mpi_headers dir when no file to copy into.    - genmake2: do not create local ./mpi_headers dir when no file to copy into.
2081    - remove option ALLOW_DIVIDED_ADJOINT_MPI (replaced by ALLOW_DIVIDED_ADJOINT    - remove option ALLOW_DIVIDED_ADJOINT_MPI (replaced by ALLOW_DIVIDED_ADJOINT

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