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revision 1.1901 by jmc, Thu Jul 25 01:12:45 2013 UTC revision 1.2182 by mlosch, Wed Sep 23 06:43:58 2015 UTC
# Line 4  $Name$ Line 4  $Name$
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    o pkg/seaice/seaice_evp.F: fix a bug (factor of four in front of e12Csq)
8      that entered with r1.54 on Sep04, 2015, -> update results
9    
10    checkpoint65o (2015/09/14)
11    o pkg/mom_vecinv & mom_common:
12      - add deep-atmosphere geometry factor in mom_calc_visc.F + in routines
13        called from there.
14      - add anelastic and deep-atmosphere geometry factor in pkg/mom_vecinv ; this
15        allows to use Vector-Invariant form in deep atmos and anelastic formulation
16    o pkg/seaice: introduce fast ice parameterisation following Itkin et al. (2015)
17      and Koenig-Beatty+Holland (2012)
18      - two new parameters SEAICE_tensilFac and SEAICE_tensilDepth
19      - global 2D field tensileStrength, computed in seaice_calc_ice_strength
20      - requires an extra input argument for S/R seaice_calc_viscosities
21      - tensileStrength's depth dependence is different from Itkin et al. (2015)
22        (to be changed and played with, for now exponential)
23    o pkg/seaice: introduce new parameter SEAICEscaleSurfStress (default = .FALSE.)
24      - if TRUE scale ice-ocean and ice-atmosphere stress acting on sea ice
25        by AREA according to Connelly et al. (2004), JPO.
26      - For EVP and the LSR solver, the implicit part of the drag term is
27        the only non-zero term in the denominator when there is no ice (which
28        prevented running the model with zero ice-ocean drag). If
29        SEAICEscaleSurfStress = .TRUE., this results in a division by zero
30        (or zero main diagonals BU/BV) which need to be caught. A practical
31        consequence is that for open water, the momentum equation reduce
32        to trivially 0 = 0 + 0 (for EVP). For LSR, BU/BV are reset to 1, if
33        they happen to be zero, often leading to a non-zero solution over
34        open water.
35    o pkg/seaice: revise EVP code (seaice_evp.F) in preparation for a more
36        efficient EVP method.
37      - introduce area-weighted averages for e12 (analogously to
38        seaice_calc_viscosities.F); this totally changes lab_sea.hb87 (2 digits
39        remain, but also changing the order of terms in the previous average
40        changed the results as much) -> update experiment
41      - add SEAICE_DELTA_SMOOTHREG code
42      - disentangle computation of zetaC/deltaC and zetaZ/deltaZ, also for
43        TEM-code
44      - adjust loop bounds so that only required fields are computed
45      - add new averaging code for zetaZ/deltaZ (again similar to
46        seaice_calc_viscosities.F), inactive by default for now (will change
47        results again), but will replace old code eventually
48    o eesupp/src:
49      - add an other alternative for multi-proc GLOBAL_SUM (in global_sum_tile.F)
50        to always cumulate tile local-sum in the same order
51        (option #define GLOBAL_SUM_ORDER_TILES in CPP_EEOPTIONS.h).
52        Still uses MPI_Allreduce (like standard code) but on array of tiles
53        and should be faster than GLOBAL_SUM_SEND_RECV code.
54      - switch almost all verification experiments that use GLOBAL_SUM_SEND_RECV
55        (defined in CPP_EEOPTIONS.h_mpi) to GLOBAL_SUM_ORDER_TILES instead.
56      - add CPP_EEOPTIONS.h_mpi with GLOBAL_SUM_ORDER_TILES defined in 14 more exp.:
57         aim.5l_cs, cheapAML_box, deep_anelastic, dome, fizhi-cs-32x32x40,
58         fizhi-cs-aqualev20, fizhi-gridalt-hs, global_ocean_ebm, matrix_example,
59         natl_box, solid-body.cs-32x32x1, tutorial_advection_in_gyre,
60         tutorial_baroclinic_gyre and tutorial_held_suarez_cs.
61    
62    checkpoint65n (2015/07/29)
63    o pkg/thsice:
64      - add a warning when used with pkg/aim but without updating SST
65        (stepFwd_oceMxL=F & useCoupler=F & tauRelax_MxL<>-1 ).
66    o pkg/offline:
67      - change where Offline-Fields are loaded, from load_fields_driver.F to
68        directly within FORWARD_STEP, just after updating iter number and time;
69      - move setting of GM and KPP diffusivity out of OFFLINE_FIELDS_LOAD into new
70        S/R OFFLINE_GET_DIFFUS that is called towards the end of DO_OCEANIC_PHYS;
71       These changes allow:
72        a) to recover exactly on-line results using deltaToffline=deltaTClock,
73        tested (using offlineIter0= nIter0 -1 and offlineTimeOffset= -deltaT/2)
74        both with Lin & Non-Lin Free-Surf, both with staggerTimeStep & synchronous
75        time-step, both with GM & KPP files and with recomputing these fields;
76        b) no needs to switch on staggerTimeStep anymore;
77        c) simplify rescaling of offline horiz. velocity with Non-Lin Free-Surf.
78      - update output of experiment tutorial_dic_adjoffline (only 3 digits left).
79    o pkg/offline:
80      - change (rarely used) offset-iteration parameter to an offset time (in s):
81        can easily recover previous offset-iter effect by setting offset-time
82        (offlineTimeOffset) to offset-iter x deltaToffline;
83      - do not turn-off Temp & Salinity surface relaxation when using KPP (used
84        in KPP as part of surface buoyancy forcing) in offline run.
85      - fix ptracers KPP non-local term in the case where KPP is re-computed.
86    o OpenAD
87      - Adding preliminary ggl90 test to OpenAD verification.
88        Config. with ggl90 currently diverges after 64 time steps
89        so will need more work to become more stable
90      - Adding preliminary kpp test to OpenAD verification.
91        required small tweakes in kpp_routines.F
92      - Merge and update from Krishna Narayanan's contrib area:
93        * Add one variable for preliminary OpenAD DIVA
94        * Add replacement time-stepping for OpenAD DIVA
95        * genmake2 flag -diva (but only for OpenAD; preliminary)
96        * required modifs for OAD_support
97        successful preliminary test for tutorial_global_oce_biogeo/
98    o pkg/seaice:
99      - initialise deltaC in seaice_lsr, cosmetic changes in seaice_lsr
100      - add cpp-flag SEAICE_DELTA_SMOOTHREG for option of regularising
101        delta with a smooth function in s/r seaice_calc_viscosity
102        (no effect on EVP)
103      - rename local suffix "sqr" into "sq" for more consistent variable names
104    o pkg/seaice:
105        add new parameter SEAICE_deltaMin that is used ***only***
106        for regularizing Delta (and nothing else, like the parameter
107        which is also used for all sorts of things SEAICE_EPS).
108        Defaults to SEAICE_EPS for backward compatibility only.
109    o pkg/seaice: replace erroneously storing e12Csqr on the wrong tape with
110        the wrong key by inialising it before use -> fixes a recomputation
111        problem but does not fix the gradient
112    o pkg/layers:
113      - move resetting of flux arrays to outside the iLa loop
114        (this caused layers_diapycnal to not work with more than one layer coord.)
115      - fix bug in calculation of layers_recip_delta in layers_init_fixed.F
116    o pkg/layers:
117      - remove from common block 3D layers fields (used to diagnose transport
118        in tracer coords) and declare them as local arrays in layers_calc.F
119    o pkg/seaice:
120      - Rename SEAICE_VECTORIZE_LSR_ZEBRA to SEAICE_LSR_ZEBRA and define it
121        in lab_sea forward experiment (changes results -> updated)
122      - update adjoint experiment lab_sea after cleaning up seaice_lsr_tridiagu/v
123    o pkg/seaice: modify seaice_lsr.F in order to improve the gradient
124       computations; for SEAICE_VECTORIZE_LSR
125      - move the loops over which the tridiagonal solvers (seaice_lsr_tridiagu/v)
126        sweep to the outside,
127      - remove store directives and add "CADJ loop sequential" directives
128        in analogy to model/src/solve_tridiagonal.F
129      - replace many "#ifdef SEAICE_VECTORIZE_LSR_ZEBRA" by variable loop
130        boundaries to yield more readable code. This has also the charming side
131        effect that your can use SEAICE_VECTORIZE_LSR_ZEBRA without
132        SEAICE_VECTORIZE_LSR (i.e. adjoint without recomputations in
133        seaice_lsr_tridiagu/v now requires either of these flags, vectorization
134        still requires SEAICE_VECTORIZE_LSR with SEAICE_VECTORIZE_LSR_ZEBRA as
135        an additional option)
136       The tridiagonal solvers are now completely analoguous to solve_tridiagonal.F
137       but the adjoint gradients (which are affected by this change) still explode.
138    o coupler (atm & ocn _compon_interf):
139      - avoid using Exch2 IO mapping if not suitable.
140    
141    checkpoint65m (2015/06/15)
142    o pkg/layers:
143      - clean-up old parameters setting (from Sep 2012):
144        + remove old parameters setting from common block (declared locally);
145        + stop if any old parameter is mixed with new parameters;
146        + check for valid or consistent parameter setting (e.g., layers_name)
147      - check that layers_bounds for Pot.Density are in the right range;
148        this is supposed to catch un-updated setting after recently shifting
149        potential density field "prho" by -1000 (now in "sigma" scale).
150    o pkg/layers:
151      - Added missing call to layers_fill for keeping track of tottend in
152        pkg/diagnostics/diagnostics_fill_state.F
153    o pkg/layers:
154      - added CPP flux LAYERS_FINEGRID_DIAPYCNAL to disable fine-grid binning
155        of diapycnal fluxes
156    o pkg/layers:
157      - reverted changes to interpolation to previous treatment; there
158        was never actually a problem
159    o pkg/layers:
160      - fix interpolation of layers tracers in the presence of partial cells
161      - add lots of new functionality to compute water mass transformation
162        (enabled by CPP flag LAYERS_THERMODYNAMICS)
163      - add new calls from main code (diags_oceanic_surf_flux.F,
164        thermodynamics.F, impldiff.F) and gad to save the necessary fields
165        for layers_thermodynamics calculations
166    o pkg/ptracers:
167      - add capability of stepping a passive tracer forward without advection
168        by setting PTRACERS_advScheme to 0.
169    o pkg/diagnostics:
170      - add few (threads) _BARRIER around any update of "diag_pkgStatus".
171    o pkg/layers:
172      - shift potential density field "prho" by -1000 for density layer averaging so
173        that it corresponds to usual "sigma" definition (i.e., rho(p=const)-1000);
174        Note that density bin boundaries (layers_bounds in data.layers) have
175        to be set accordingly (i.e., shifted, in sigma scale).
176    o pkg/layers:
177      - fix snap-shot output of layer thickness @ V.pt and output of pot.density
178      - fix calculation of layer non-weighted velocity and layer probability
179      - add diagnostics for pot.density used for layer averaging
180    o pkg/seaice:
181      - seaice_calc_viscosity.F: change computation of deltaC**2 to ensure
182        positiveness, modify a few comments and improve variable names,
183      - the changed computation of deltaC affects most seaice-related
184        experiments at the truncation level.
185        seaice_itd.thermo is affected by far the most, with
186        only 7 digits of agreement remaining; update experiments.
187    
188    checkpoint65l (2015/05/04)
189    o pkg/shelfice:
190      - in shelfice_thermodynamics.F, if SHELFICEBoundaryLayer=.true., then set
191        factor drKp1 to zero where it is negative (ie. do not use
192        SHELFICEBoundaryLayer if hFacC>1)
193      - the same for factor drLoc in shelfice_forcing.F
194    o tools/genmake2: move FEXTRAFLAGS from FFLAGS to FOPTIM to avoid a problem
195        with modules in ptracers, when using testreport option "-small_f"
196    o pkg/seaice/seaice_growth.F (in case of SEAICE_ITD)
197      - replace tmpscal1**1.36 by faster exp(1.36*log(tmpscal1))
198    o verification/testreport
199      - add new option -small_f
200        with this option testreport first makes the target small_f (*.f files)
201        before running make (all). This is useful for explicit inlining when
202        all sources need to be full available.
203    o pkg/exf/exf_interp.F:
204        remove previous changes related to reverse (decreasing) input grids latitude
205    
206    checkpoint65k (2015/04/01)
207    o pkg/ecco:
208        fix missing cosphi initialization; use eccoiter in place of optimcycle;
209        if autodiff is not compiled then use READ_REC_XY_RL/READ_REC_XYZ_RL
210        instead of active read/write
211    o pkg/ctrl:
212        if autodiff is not compiled then use READ_REC_XY_RL/READ_REC_XYZ_RL
213        instead of active read/write.
214    o pkg/autodiff: make autodiff_readparms.F and autodiff_whtapeio_sync.F
215        return if .NOT.useAUTODIFF
216    o pkg/seaice: add CPP brackets (cost function related).
217    o model/src:
218        add useAUTODIFF run time switch.
219    o pkg/exf/exf_interp.F:
220        add code to allow input grids with latitude starting in the north (i.e. when
221        j=1 corresponds to northern edge of field); modify global_with_exf to test
222        this feature.
223    o verification/testreport:
224      - replace "grep -A3" with POSIX conformal sed command, because there are
225        implementations of grep that cannot do contextual searches
226      - replace "cat -n" by "nl" (two occurrences), because not all implementations
227        of "cat" have the option "-n"
228    o model/src:
229        add new file gsw_teos10.F that contains 3 functions, more or less a copy
230        of the gsw_toolbox.f90 of the TEOS-10 fortran interface, that are used to
231        convert from conservative to potential temperature. For now they are not
232        called anywhere.
233    o pkg/ggl90: make "useIDEMIX" useful
234      - re-organize code in s/r ggl90_calc a little to move computations that
235        are different for idemix into separate loops (changes verification
236        experiment idemix at truncation level, 12 digits remain -> updated)
237      - requires 2 new 2D fields KappaM, verticalShear
238      - make hFacI and recip_hFacI local 3D variables that are passed to
239        s/r ggl90_idemix
240      - fix and improve some comments
241    
242    checkpoint65j (2015/02/25)
243    o pkg/openad
244      - synchronize seawater.F with version in model/src: replace routine
245        body of sw_temp by calling sw_ptmp and fix/add a few comments.
246    o pkg/mnc:
247      - change default value of pickup_read/write_mnc params to FALSE
248        (since few features are missing in reading MNC pickup files).
249    o model/src:
250      - change default (background) vertical diffusivity for salt to be the
251        temperature (background) vertical diffusivity.
252      - change background vertical diffusivity in vertical mixing pkgs ggl90,
253        kl10, my82 and pp81 from temperature diffusivity to salinity diffusivity.
254        This makes ptracers default diffusivity (that uses salt diffKr) more
255        consistent with vertical mixing schemes.
256    o verification/testreport:
257      - fix typo in "-pcls" option ;
258      - put temp files in /tmp (instead of in local dir)
259      - add option "-ncad" to use genmake2 new option "-nocat4ad"
260      - allow to use "-j" option (for multi-procs make) for AD, OAD and TLM.
261    o pkg/ggl90 (idemix code):
262      - apply few fixes ; add some missing "_d 0" ; update output of exp.
263        global_ocean.90x40x15.idemix
264    o OpenAD
265      - enable active file I/O and begin removal of work-around code
266        for OpenAD for handling control variables (memory vs. active files)
267      - new CPP options file OPENAD_OPTIONS.h
268      - revert to genarr2d gradient check for hs94.1x64x5
269      - (genarr3d tested by tutorial_global_oce_biogeo, tutorial_tracer_adjsens)
270      - gentim2d works for halfpipe_streamice but not yet hs94.1x64x5
271    o tools/genmake2:
272      - add option for an alternative Makefile (from Martin) where multiple
273        source files are sent to TAF (instead of all in one file).
274    o pkg/ggl90: add IDEMIX (Olbers and Eden, 2013)
275      - code provided by Carsten Eden as an extension of ggl90
276      - so far the code is turned on within ggl90 by setting a CPP-flag at
277        compile time; a runtime flag implementation is not yet complete
278      - tested in new verification experiment global_ocean.90x40x15.idemix
279    o verification:
280      - reduce length of the AD test run by half for experiments
281        global_ocean.cs32x15 (std + thsice) and isomip
282      - enable active file I/O for OpenAD, adjust verifications accordingly
283      - halfpipe_streamice: change gradient check from genarr2d to gentim2d
284    o verification/testreport:
285      - fix two non-POSIX sed statements so that there are no error messages
286        on Mac OS X
287      - replace hostname -s with hostname | sed 's/\..*$//'
288    o model/src/seawater.F:
289      - simplify SW_TEMP to just calling SW_PTMP with P and PR exchanged
290        (following the matlab code), which would have avoided the bug caught
291        by Matt (see below) in the first place
292    o pkg/shelfice:
293      - implement alternative discretisation of quadratic drag (selectBotDragQuadr)
294        and true distance in no-slip BC (bottomVisc_pCell) similar to bottom-drag.
295      - fix sign of friction tendency (no-slip BC) and fix u,v drag for thin
296        ice-shelf case (i.e., within surface level).
297      - add config summary in shelfice_check.F
298      - remove global variable recip_SHELFICElatentHeat and replace by a local
299        variable recip_latentHeat
300      - introduce diagnostics for friction velocity uStar (in case of
301        SHELFICEuseGammaFrict)
302      - change verification experiment isomip.htd:
303        + start from pickup (as input_ad at nIter0=8640)
304        + start from SHELFICEmassFile instead of SHELFICEloadAnomaly file
305        + test SHELFICEuseGammaFrict = .TRUE.
306        + test SHELFICEadvDiffHeatFlux = .TRUE.
307    o model/src:
308      - fix bug (Thanks to Matt) in function SW_TEMP (to convert Pot.Temp to
309        in-situ Temp) and in routine SW_TEMP (in pkg/openad);
310        update output of experiments global_with_exf.yearly and isomip (all 6).
311    o pkg/shelfice:
312      - change setting of kTopC to also be zero where there is no ice-shelf.
313      - zero out surface forcing arrays (for now, for T & S + EmPmR) where
314        ice-shelf is.
315      - first attempt to get RealFreshWaterFlux effects: for now, only without
316        SHELFICEboundaryLayer ; not consistent if using synchronous time-stepping.
317    o pkg/seaice: add the option to prescribe a fixed thickness PDF
318      for thermodynamic calculations
319      - because of divisions of the type 7/7 not exactly equal to 1, this change
320        affects results of some verification experiments by up to 4 digits:
321        global_ocean.cs32x15.seaice, lab_sea, lab_sea.fd, lab_sea.salt_plume,
322        seaice_obcs, seaice_obcs.seaiceSponge, seaice_obcs.tides
323        adjoint: lab_sea, lab_sea.noseaicedyn
324        -> updated
325    
326    checkpoint65i (2015/01/23)
327    o model/src:
328      - change units of frictionHeating field from W to W/m^2
329      - fix bug in frictional heating from stratospheric drag in
330        S/R ATM_PHYS_TENDENCY_APPLY_V
331      - with synchronous time-stepping: move resetting to zero of frictionHeating
332        field from load_fields_driver.F to thermodynamics.F ;
333      - add diagnostics for frictional heating.
334    o model/src & gmredi K3D:
335      - add frictionHeating field to pickup-files (for synchronous time-stepping)
336      - move ALLOW_EDDYPSI block out of DYNVARS.h and merge it into FFIELDS.h
337      - rename uMean,vMean --> uEulerMean,vEulerMean (+ change diagnostics name
338        and name in pickup file).
339      - fix arguments of few DIAGNOSTICS_FILL calls in gmredi_k3d.F
340    o model/src:
341      - move (from ini_forcing.F) initialisation of all arrays in header file
342        FFIELDS.h into new S/R ini_ffields.F ; this fix broken restart
343        (since Nov 2012) with option selectAddFluid=1.
344    o pkg/shelfice:
345      - change units (+ document) of newly added field "shelfIceMassDynTendency"
346      - upgrade from _RS to _RL shelficeMass & shelficeLoadAnomaly arrays.
347    o pkg/obcs: re-organize obcs_calc_stevens.F to prepare for passive tracers
348    o pkg/seaice: two new runtime parameters:
349      - SEAICE_cStar replaces the hard wired "20" in the strength formulation,
350        long overdue
351      - SEAICE_tensilFac: preparation for Koenig-Beatty+Holland (2012)
352        parameterization of tensil stress for fast ice (does not do anything yet)
353    o pkg/seaice/seaice_check.F: left over from restricted addtive Schwarz method
354        for LSR: move checking overlaps out of JFNK-if-block
355    o pkg/atm_phys:
356      - move copy of grid and dynamical fields out of atm_phys_driver.F into
357        new S/R ATM_PHYS_DYN2PHYS.
358      - fix level height for Linear Free-Surf case (to be consistent with
359        fixed-in-time pressure levels).
360    o pkg/mom_common (bottomdrag):
361      - average bottomDragFld (ALLOW_BOTTOMDRAG_CONTROL) from grid-cell center
362        to correct location (U & V point) in S/R MOM_U/V_BOTTOMDRAG;
363        update output (adm & tlm) of experiment global_ocean.90x40x15.bottomdrag.
364    o pkg/shelfice (u/v_drag):
365      - add one argument (the other velocity component) to S/R SHELFICE_U/V_DRAG;
366      - use SHELFICEDragLinear & SHELFICEDragQuadratic in shelfice_v_drag.F
367        (now similar to shelfice_u_drag.F)
368      - remove condition on bottomDragTerms when calling SHELFICE_U/V_DRAG
369        from mom_vecinv.F (similar to mom_fluxform calls).
370    o pkg/mom_common (bottomdrag):
371      - add one argument (the other velocity component) to S/R MOM_U/V_BOTTOMDRAG;
372      - add options for alternative discretisation of velocity norm in quadratic
373        bottom drag: averaging of grid-cell-center KE to U.point and V.point
374        (selectBotDragQuadr=0, original code) can produce noisy patterns; this
375        improves when averaging only the other component (e.g. vVel for U bottom
376        drag) using wet-point method (selectBotDragQuadr=2) or not (=1).
377      - add options (bottomVisc_pCell) to account for partial-cell in bottom
378        friction (no-slip BC) thus getting the true distance from the bottom;
379        off by default since this also reduces model stability (explicit bottom
380        friction). Changes produce different machine truncation with linear-drag
381        + no-slip BC: update output of experiments exp4.stevens (10 digits) and
382        front_relax (bvp & mxl, 10 & 11 digits).
383    o model/src & mom pkgs:
384      - add one more level to vertical viscosity local arrays (Nr+1, previously Nr)
385        since no-slip bottom BC uses viscosity @ k+1 to update velocity @ level k
386      - for now and until vertical mixing scheme are updated to fill up level Nr+1,
387        just copy level Nr value to level Nr+1.
388    o doc:
389      - add notes form Abhisek Chakraborty on how to close Heat & Salt budgets.
390    o pkg/streamice:
391      - shelfice_init_varia.F, shelfice_init_fixed.F, shelfice_readparms.F,
392        SHELFICE.h: move array shelficemass to init_varia, initialise
393        from array shelficemassinit, which is set in init_fixed and
394        has option to be set from file; introduce array
395        shelficeMassDynTend array, set thru file in init_fixed
396      - NEW FILE: shelfice_step_icemass.F: update shelficemass from either
397        shelfIceFreshWaterFlux and shelficeMassDynTend or H_streamice in
398        pkg/streamice
399      - shelfice_thermodynamics.F: call shelfice_step_icemass if
400        SHELFICEMassStepping = .true.
401      - shelfice_ad_diff.list: add new subroutine shelfice_step_icemass.f
402    
403    checkpoint65h (2014/12/17)
404    o verification/global_ocean.90x40x15, global_ocean_ebm:
405      - update to generic controls.
406    o pkg/ctrl:
407      - ctrl_map_ini_genarr.F: test for igen>0
408      - ctrl_init_variables.F: add call to CTRL_MAP_INI_GENTIM2D.
409      - move gentim2d part of ctrl_map_ini_genarr.F to
410        new separate routine : ctrl_map_ini_gentim2d.F
411      - ctrl_cost_driver.F,ctrl_init.F ctrl_map_ini_genarr.F:
412        add time variable weights and cyclic controls (time mean,
413        seasonal cycle, etc) capabilities to gentim2d
414    o pkg/ecco:
415      - move reading of error, conversion to weights from
416        ecco_cost_init_fixed.F to ecco_toolbox.F (ecco_readwei)
417    o global_oce_llc90, cs32:
418      - activte sbo.
419      - CTRL_SIZE.h : add maxCtrlProc.
420      - activate the new genctrl capabilities.
421      - update following reorganization of global_oce_input_fields.tar.gz  
422    o pkg/ctrl/ctrl_ad_diff.list:
423      - add missing ctrl_init_rec.f
424    o tools/OAD_support/keepOriginal:
425      - add ctrl_init_rec.F
426    o model/src/the_main_loop.F, pkg/ctrl/ctrl_map_ini_genarr.F:
427      - avoid recomputations of xx_gentim2d_dummy.
428    o momentum diagnostics:
429      - move filling of diagnostics Um_Diss & Vm_Diss from mom_fluxform.F and
430        mom_vecinv.F to timestep.F (to include Smag-3D contribution).
431    o pkg/seaice/seaice_lsr.F:
432      - fix computation of BU/BV, make sure they are non-zero, only necessary
433        for cubed sphere exchanges and SEAICE_OLx/y>0.
434        This makes calling s/r fill_cs_corner_rl obsolete (removed).
435    o verification/global_ocean.cs32x15/input.seaice
436      - add test for strong implicit coupling and restricted addtive Schwarz
437        methods for LSR
438      - update results/output.seaice.txt
439    o verification/tutorial_global_oce_biogeo:
440      - AD & OAD set-up: switch off ALLOW_OLD_VIRTUALFLUX (like in fwd set-up)
441        and set PTRACERS_EvPrRn(1,2) to zero (for DIC & ALK);
442        update output_adm,_oadm,_tlm.txt
443    o pkg/dic:
444      - change default to "#undef ALLOW_OLD_VIRTUALFLUX" in DIC_OPTIONS.h
445      - add a stop when ALLOW_OLD_VIRTUALFLUX is defined and PTRACERS_EvPrRn
446        for tracer 1 & 2 is set (to avoid double counting of dilution effect).
447    o verification/tutorial_global_oce_biogeo:
448      - AD & OAD set-up: do not set PTRACERS_EvPrRn for tracer 1 & 2 since
449        dilution is already added by pkg/dic ALLOW_OLD_VIRTUALFLUX ;
450        update output_adm,_oadm,_tlm.txt
451    o eesupp/src:
452      - add fill_cs_corner_rl.F (_RL-copy of fill_cs_corner_rs.F)
453        and call it in seaice_lsr when using nonzero SEAICE_OLx/y
454    o pkg/seaice: introduce strongly implicit coupling, intended for stabilizing
455      LSR (following Hutchings et al. 2004)
456      - introduce zetaZ as a global variable (requires adjustments in
457        seaice_evp.F and seaice_jfnk.F) and compute analoguously to etaZ
458        in seaice_calc_viscosities.F
459      - new flag SEAICEuseStrImpCpl (default off)
460      - add new terms zetaZ*du/dy and zetaZ*dv/dx on both sides of the
461        momentum equations
462      - JFNK-solver (preconditioner) adjusted to allow using this method
463        (where it does not have any positive effect)
464    o pkg/seaice
465      - add overlap for restrictive additive Schwartz method also to LSR, but
466        turn it off by default (because it only seems to work for non-cubed
467        sphere/llc topologies)
468    o pkg/autodiff
469      - add extra exchanges in addummy_in_steppging also for mnc output
470    o pkg/seaice:
471      - add extra exchanges before dumping adjoint fields in seaice_ad_dump.F
472        to avoid stripes in the adjoint output (similar to addummy_in_stepping.F)
473    o pkg/obcs:
474      - add option to specify domain-connected piece Id along OB though files
475        (for now, only used to diagnose PhiVel; default =1 -> global correction)
476      - modify obcs_diag_balance.F to process each connected-part separately;
477        exclude OB where Id = 0 but keep the full divergence there (-> constant
478        Psi along this portion of OB and all inflow derived from grad(Phi))
479      - add example of OB-conect files in verification/so_box_biogeo/input.
480    o pkg/diagnostics:
481      - improve treatment of Open-Boundaries in Velocity-Potential calculation:
482      a) use non zero matrix element across OB and solve for Phi 1 grid point
483         outside OB (i.e, where tracer OBCS are applied).
484      b) global imbalance of inFlow/outFlow across OB: instead of modifying
485         velocity across OB, spread it uniformly along the OB in the RHS.
486    
487    checkpoint65g (2014/11/19)
488    o pkg/diagnostcis:
489      - add preconditioner off-diagonal factor (diagCG_pcOffDFac) as run-time param
490    o pkg/my82,pp81,kl10:
491      - fix ALLOW_3D_DIFFKR implementation (previously had no effect): use 3-D
492        field diffKr as background diffusivity to set minimum diffusivity value.
493    o pkg/seaice:
494      - add new parameter SEAICEuseEVPrev (for revisited EVP by
495        Bouillon et al 2013)
496      - add SEAICE_evpAlpha/Beta to namelist
497      - modify seaice_evp code to able to use SEAICEuseEVPrev. These changes
498        involve trivial re-ordering of divisions/multiplications that should not
499        have any effects, but ... they do change the results of lab_sea.hb87 so
500        that only 2 digits of agreement remain, in line with the general
501        instability/fragility of the evp-code. For now, I do not care and just
502        update the verification experiment
503    o pkg/ctrl : add generic pre-processing (xx_genarr2d_preproc etc)
504      - remove xx_genarr2d_numsmooth etc
505      - use xx_genarr2d_preproc etc instead
506      - carry out smooth_correl2D at initialization stage rather than during
507        time stepping.
508      - get smoothOpNb from xx_gentim2d_preproc
509    o global_oce_cs32 :
510      - add test of generic ecco capabilities.
511    o pkg/exf/exf_getsurfacefluxes.F :
512      - add to tmpUE/tmpVN rather than re-initializing them (conventional behavior).
513    o pkg/ctrl,ecco :
514      - omit un-necessary arguments to ctrl_cost_gen.F unless ECCO_CTRL_DEPRECATED
515        is defined.
516    o pkg/seaice: add diagnostics for Delta (deformation parameter)
517    o model/src:
518      - when ALLOW_3D_DIFFKR is defined, add a Warning if any of the vertical
519        diffusivity (background) is specified but ignored.
520    o verification:
521      - in testreport, convert hostname to lower case for default output dir name
522    o model, pkg : add useCTRL, useECCO parameters (on/off run time switch).
523    o pkg/dic: add modifications from Hajoon:
524      - add iron sedimentation flux function of the flux of PO4 out of bottom layer
525      - light attenuation: add self-shading effect by climatological Chlorophyll
526        (read from file).
527    o pkg/seaice/seaice_preconditioner.F : fix cpp flags, so that code also
528        compiles when SEAICE_ALLOW_DYNAMICS is undefined
529    o global_oce_llc90,cs32 : ecco_v4 verification exps now use separate
530        AUTODIFF_OPTIONS.h, CTRL_OPTIONS.h, ECCO_OPTIONS.h rather than
531        ECCO_CPPOPTIONS.h (i.e. replacing the deprecated, circumvoluted,
532        approach where CPP_OPTIONS.h includes an omnipotent
533        ECCO_CPPOPTIONS.h that superseeds pkgs '_OPTIONS.h').
534    o pkg/ctrl/ctrl_map_ini_genarr.F : include GMREDI_OPTIONS.h where
535        ALLOW_3D_KAPGM, ALLOW_3D_KAPREDI (to be added later) belong.
536    o pkg/seaice/SEAICE_SIZE.h : replace ALLOW_AUTODIFF_TAMC with ALLOW_AUTODIFF
537        to avoid needing AUTODIFF_OPTIONS.h anytime SEAICE_SIZE.h is included
538        (it seems that THSICE_SIZE.h, PTRACERS_SIZE.h have the same issue...)
539    o model/src, pkg/smooth, profiles, salt_plume, seaice, exf, ecco, ctrl :
540      add ECCO_OPTIONS.h, AUTODIFF_OPTIONS.h, CTRL_OPTIONS.h when needed
541      - ECCO_OPTIONS.h is needed when including ecco_cost.h, ecco.h
542      - AUTODIFF_OPTIONS.h is needed when including tamc.h, tamc_keys.h
543      - CTRL_OPTIONS.h is needed when including ctrl.h, optim.h, etc
544    o pkg/ctrl,ecco,exf :
545      - remove variables associated with NON-generic costs,
546        unless ECCO_CTRL_DEPRECATED is defined.
547      - remove NON-generic NON-obcs controls,
548        unless ECCO_CTRL_DEPRECATED is defined.
549    o pkg/ctrl : added ctrl_local_params.h
550    o pkg/ecco : added ecco_local_params.h
551    o verification : added ECCO_CTRL_DEPRECATED to most as and oad
552        experiments, which will progressively be removed once the
553        experiments are revised to use only generic controls/costs.
554    
555    checkpoint65f (2014/10/13)
556    o pkg/ctrl, ecco, seaice : minor changes in headers
557    o global_oce_llc90,cs32 : ecco_v4 verification exps now test generic
558        cost function and control capabilities added since checkpoint65c.
559    o pkg/ctrl: regroup all obcs ctrl variables in CTRL_OBCS.h.
560    o pkg/ecco: increase modularity and improve logic
561      - ecco_toolbox.F (new) : basic operations that are often used,
562        including ecco_zero, ecco_cp, ecco_cprsrl, ecco_diffmsk,
563        ecco_addcost, ecco_add, ecco_div, ecco_readbar.
564      - cost_gencal.F (new) : determine filnames and records.
565      - cost_genread.F, cost_generic.F : condense code using ecco_toolbox.
566      - cost_generic.F : use spzeroloc rather than hard-coded -9999,
567        and exploit the above functions leading to more compact code.
568      - cost_genread.F : rm un-necessary arguments, re-arrange args order.
569      - ecco_check.F, ecco_readparms.F : bring logic up to date (using_tpj,
570        using_ers, using_gfo, using_mdt is now only defined within gencost)
571    o pkg/ecco: extend generic cost capabilities
572      - pkg/ecco : added 3D gencost (ALLOW_GENCOST3D), added gencost
573        capabilities via gencost_preproc (+ _c,_i,_r related params),
574        gencost_posproc (+ _c,_i,_r related params), gencost_nrecperiod,
575        gencost_outputlevel arguments to cost_generic
576      - pkg/ecco/cost_genread.F (new) : interface between cost_generic
577        and active_read, making room for gencost_preproc to take effect.
578        Added preproc code ('climmon') to replace GENERIC_BAR_MONTH.
579      - pkg/ecco/cost_generic.F :
580        compute and store misfit maks*(model-data) in localdif that is
581        then used in cost and for output, output misfit if outlev.GT.0
582      - pkg/ecco/cost_averagesfields.F : depend on gencost_barskip
583        rather gencost_barfile for deciding whether to write barfile
584      - pkg/ecco/ecco_cost_driver.F : extract call to cost_profiles from cost_hyd
585      - pkg/ecco/ecco_cost_init_fixed.F : extract gencost weights from
586        ecco_cost_weights, re-activate ecco_summary, determine gencost_barskip
587      - pkg/ecco/ecco_summary.F : report gencost variables
588      - pkg/ecco/cost_gencost_customize.F : treat case of scatterometer costs
589    o pkg/sea/SEAICE_OPTIONS.h : add ALLOW_COST_ICE, ALLOW_SEAICE_COST_SMR_AREA
590    o pkg/ecco: internal re-organization
591      - resolve un-necessary dependancies within pkg/ecco and to pkg/ctrl
592        (rm includes of optim.h and ctrl.h, replace optimcycle with eccoiter,
593        mv relevant variables definition from ecco_cost.h to ecco.h,
594        make sure gencost routines only include ecco.h)
595      - throughout : add missing CCP switches, rm unused variables,
596        and rm un-necessary CPP switches
597      - throughout gencost routines : replace modelstartdate with
598        gencost_startdate when needed
599      - cost_bp_read.F : use arguments, instead of common blocs
600        so that it can be used also by (new) cost_gencost_bpv4.F
601      - ecco_init_varia.F : initialize RHOsumGlob_0, VOLsumGlob_0
602      - ecco_phys.F : compute etanFull
603      - ecco_readparms.F : rename using_topex as using_tpj, add
604        bpv4-grace to gencost list, initialize added parameters
605      - ecco_summary.F : include SIZE.h needed for augmented ecco.h
606    
607    checkpoint65e (2014/09/28)
608    o pkg/obcs:
609      - replaced the just-added CPP options with run-time variables
610        (see pkg/obcs/OBCS_PARAMS.h for details)
611    o pkg/obcs:
612      - add additional CPP options for sponge boundary layers
613        (see pkg/obcs/OBCS_OPTIONS.h for details)
614    o pkg/atm_phys:
615      - implement simple (obliquity only, assuming circular planet orbit)
616        seasonal cycle for incoming insolation ; used when run-time parameter
617        "select_incSW" is set to 1 ; by default (=0), uses old unchanged formula.
618    o pkg/exf, pkg/ecco, pkg/ctrl:
619      - add ctrlUseGen and .NOT.ctrlUseGen exclusive brackets
620      - activate gentim2d for xx_atemp,xx_aqh,xx_swdown,xx_lwdown,xx_precip
621      - implement gentim2d for xx_tauu, xx_tauv
622    o pkg/ctrl, pkg/ecco :
623      - fix and complement the generic controls implementation
624    o pkg/exf/exf_getclim.F, exf_getffields.F, exf_getsurfacefluxes.F,
625        pkg/shelfice/shelfice_thermodynamics.F,
626        verification/hs94.1x64x5/code_ad/ctrl_map_gentim2d.F,
627        verification/hs94.1x64x5/code_oad/ctrl_map_gentim2d.F :
628      - add weight in CTRL_GET_GEN calls
629    o pkg/ctrl :
630      - ctrl_get_gen.F : add weight as input parameter, and apply
631        it directly rather than using smooth_correl2Dw (to be retired).
632      - ctrl_map_gentim2d.F : add wgentim2d in CTRL_GET_GEN call
633    o pkg/ctrl :
634      - introduce run time switch ctrlUseGen (in ctrl.h, ctrl_check.F,
635        ctrl_init_variables.F, ctrl_readparms.F, ctrl_summary.F)
636      - re-activate ctrl_summary (call in ctrl_init.F)
637    o pkg/ctrl/ctrl_cost_gen.F :
638      - fix CCP brackets, remove un-necessary myiter, mytime
639    o pkg/ecco, pkg/ctrl :
640      - remove cost_genctrl.F (now pkg/ctrl/ctrl_cost_driver.F)
641      - remove cost_forcing_gen.F (now pkg/ctrl/ctrl_cost_gen2d.F)
642      - add ctrl_cost_driver.F (replaces pkg/ecco/cost_genctrl.F)
643      - add ctrl_cost_gen2d.F (replaces pkg/ecco/cost_forcing_gen.F)
644    
645    checkpoint65d (2014/09/15)
646    o pkg/ctrl/CTRL_GENARR.h, ctrl_readparms.F :
647      - add xx_genarr2d_bounds,xx_genarr3d_bounds,
648        xx_genarr2d_numsmooth, xx_genarr3d_numsmooth
649    o pkg/ctrl/ctrl_map_ini_genarr.F :
650      - remove compilation failure
651      - replace hard coded example
652      - use ctrl_map_ini_gen2D, 3D
653    o pkg/ctrl/ctrl_pack.F, ctrl_unpack.F :
654      - on/off switch based upon xx_genarr2d_weight,3d
655    o src/packages_init_variables.F :
656      - regroup pkg/estimation calls
657      - remove CTRL_MAP_INI, CTRL_MAP_INI_ECCO
658        (moved to ctrl_init_variables)
659    o cost/cost_init_varia.F :
660      - remove ecco_cost_init_varia
661        (moved to ecco_init_varia)
662    o ctrl/ctrl_init_variables.F :
663      - add CTRL_MAP_INI, CTRL_MAP_INI_ECCO
664      - add CTRL_MAP_INI_GENARR, SEAICE_CTRL_MAP_INI
665    o ctrl/ctrl_map_ini.F :
666      - remove ctrl_map_ini_genarr, seaice_ctrl_map_ini
667        (moved to ctrl_init_variables)
668    o ctrl/ctrl_map_ini_ecco.F :
669      - remove ECCO_PHYS (mv to ecco_init_varia)
670      - remove seaice_ctrl_map_ini (mv to ctrl_init_variables)
671    o ecco/ecco_ad_diff.list :
672      - add ecco_init_varia.f
673    o ecco/ecco_init_varia.F
674      - new routine
675    o pkg/streamice:
676      - move call to STREAMICE_INITIALIZE_PETSC from the_model_main.F
677        to streamice_init_fixed.F ; fix setting of STREAMICEisOn.
678      - from model/src, only call pkg/streamice routines if useStreamIce is TRUE.
679    o pkg/generic_advdiff:
680      - fix bug causing negatives in GAD_SMOLARKIEWICZ_HACK, introduced 8/8/2014.
681    o pkg/exf:
682      - exf_getffields.F : add xxg_atemp, xxg_aqh, xxg_swdown, xxg_lwdown,
683         xxg_precip capability
684      - exf_wind.F : no need for ALLOW_WSPEED_CONTROL cpp switch
685    o pkg/ctrl:
686      - ctrl_pack.F, ctrl_unpack.F : omit (un)packing of undefined xx_gentim2d
687    o model/src/load_fields_driver.F :
688      - move call to CTRL_MAP_GENTIM2D ahead of BULKF_FIELDS_LOAD, EXF_GETFORCING
689        so xx_gentim2d can be applied to e.g. exf fields in a timely manner.
690    o OpenAD verification experiments:
691      - Include explicitly AUTODIFF_OPTIONS.h, COST_OPTIONS.h, and CTRL_OPTIONS.h
692        in src files (to enable to skip the ECCO_CPPOPTIONS.h);
693        for now, only in pkgs used in OpenAD verification experiments.
694      - Change all except one (halfpipe_streamice) OpenAD experiments to use pkg
695        specific option file (AUTODIFF_OPTIONS.h, COST_OPTIONS.h & CTRL_OPTIONS.h)
696        instead of using ECCO_CPPOPTIONS.h (with all relevant options in it).
697        This applies to both TAF (*/code_ad/) and OpenAD (*/code_oad/) tests.
698    o OpenAD verification tests:
699      - finish removing ALLOW_AUTODIFF_OPENAD (replaced by ALLOW_OPENAD);
700      - finish replacing ALLOW_AUTODIFF_TAMC by ALLOW_AUTODIFF (except for
701        tape/storage which are specific to TAF/TAMC) in pkgs used in OpenAD exp.
702      - leave ALLOW_AUTODIFF_TAMC undef in OpenAD verification tests (*/code_oad/)
703        and remove local copy of "tamc.h" (needed only if ALLOW_AUTODIFF_TAMC).
704    o model/src & generic_advdiff:
705      - change hard-coded loop-range in S/R APPLY_FORCING_T/S to set T & S
706        forcing over 0:sNx+1, 0:sNy=1 (instead of just 1:sNx,1:sNy): Model
707        dynamics requires valid tracer forcing only over tile interior but, for
708        some diagnostics, may need to extend it over 1 point in tile halo region.
709      - in gad_calc_rhs.F, update calls to gmredi_x/ytransport to get valid
710        tendency over i,j_Min,Max range. This allows to simplfy i,j_Min,Max
711        setting in temp/salt/ptracer_integrate.F
712    o pkg/dic:
713      - multiply tracer tendencies by maskInC (if ussing OBCS) before updating
714        gchem tracers: this allows to skip the 2nd call to OBCS_APPLY_PTRACER
715        in gchem_forcing_sep.F
716    o pkg/autodiff & obcs:
717      - add storage of current OB values for U & V (was already done for T & S).
718    
719    checkpoint65c (2014/08/30)
720    o pkg/dic:
721      - take out of dic_atmos.F the initialisation part (corresponding to istate=0)
722        and move it to new S/R DIC_INI_ATMOS ; also simplify the dependencies for
723        AD compilers (but still a Pb with multi-threading and Ajoint dependencies).
724    o verification:
725      - new experiment testing OBCS and DIC pkgs, using params & output from
726        tutorial_global_oce_biogeo but limited to a sub-domain around Drake
727        passage: take OBCS from the last year of a 2 yrs simulation and initial
728        conditions from t=1.yr while keeping the same forcing.
729    o model/src:
730      - when allowFreezing=T, only reset below freezing initial Temp to Tfreezing
731        (at any k) if checkIniTemp is not set to FALSE (default checkIniTemp=T).
732    o pkg/diagnostics (Stats-Diags):
733      - re-write S/R DIAGSTATS_CALC (more similar to TARGET_NEC_SX part) to:
734        a) refine region where stats are computed, excluding where arrhFac=0 ;
735        b) fix missing interior mask (use with OBCS) in 3-D fields statistics;
736        c) extend regional stats over the region edges (for U or V pt location).
737    o pkg/gchem:
738      - add a (2nd) call to OBCS_APPLY_PTRACER in gchem_forcing_sep.F (needed since
739        pkg/dic is currently changing/updating ptracers values beyond the OB).
740    o verification (hs94):
741      - convert Held & Suarez external_forcing.F (from hs94.cs, with Sigma-coords
742        bits) to apply_forcing.F and undef USE_OLD_EXTERNAL_FORCING in experiments
743        hs94.cs-32x32x5 and tutorial_held_suarez_cs ; also use the same version of
744        apply_forcing.F in 2D hs94 (fwd, ad & oad) but keep LatLon hs94 unchanged.
745    o pkg/ptracers:
746      - implement Adams-Bashforth on pTracers (instead of on tracer tendency),
747        switched on by setting PTRACERS_doAB_onGpTr=F (default set to doAB_onGtGs)
748      - change exp4 secondary test (input.nlfs) to test AB on T & S & pTracer
749        with AB-2 code (so that it get tested).
750    o model/src:
751      - allow to apply Adams-Bashforth on Temp & Salt (instead of on gT,gS)
752        with AB-2 code (previously only available with AB-3 code).
753        Also move the code (call to ADAMS_BASHFORTH S/R) form thermodynamics.F
754        to temp/salt_integrate.F (since the 2nd part of gt/sNm1 update is done
755        there, by calling CYCLE_AB_TRACER).
756    o pkg/generic_advdiff:
757      - change Tracer argument (drop bi,bj indices) in S/R GAD_CALC_RHS,
758        GAD_C2_ADV_R, GAD_U3_ADV_R, GAD_C4_ADV_R, GAD_DIFF_R, GAD_BIHARM_R
759        + also in GMREDI_X/Y/RTRANSPORT ; and update corresponding calls in
760        S/R temp/salt/ptracers_integrate.F
761    o model/src & pkg/ptracers:
762      - remove common block variables gT,gS (in DYNVARS.h), except when
763         USE_OLD_EXTERNAL_FORCING is defined; update TAF storage accordingly.
764      - remove common block variable gPtr.
765    o model/src & pkgs:
766      - change gTracer (and/or tracer) argument (drop bi,bj indices) in S/R
767         ADAMS_BASHFORTH(2&3), CYCLE_(AB_)TRACER, FREESURF_RESCALE_G,
768         IMPLDIFF, SOLVE_TRIDIAGONAL & _PENTADIAGONAL, GAD_SOM_ADVECT,
769         GAD_ADVECTION, GAD_CALC_RHS, GAD_IMPLICIT_R, TIMEAVE_CUMUL_DIF_1T
770      + change accordingly all calling S/R.
771      - use local temperature/salinity/ptracer tendency array (without bi,bj)
772        in S/R temp/salt/ptracers_integrate.F
773    o pkg/seaice:
774      - move computation of stress contributions to rhsU/V in s/r seaice_lsr
775        to separate s/r seaice_lsr_rhsu/v in order to be able to re-use code
776      - make u/vIceC local variables if SEAICE_CGRID is defined only to be used
777        in seaice_lsr
778      - seaice_lsr.F: make local 4D arrays UXX, VYY, etc 2D
779        in s/r seaice_lsr_calc_coeffs
780    o pkg/mdsio:
781      - in MDS_READ/WRITE_FIELD, stop if file-name (+prefix) is too long
782        (e.g., > MAX_LEN_MBUF -90 ) or, in INI_MODEL_IO, if mdsioLocalDir is
783        too long (e.g., > MAX_LEN_FNAM/2 )
784    
785    checkpoint65b (2014/08/12)
786    o pkg/matrix:
787      - pass, as argument, updated tracer field to S/R MATRIX_STORE_TENDENCY_EXP
788    o model/src:
789      - fix initialisation of geothermalFile; compile geothermal-flux code in
790        natl_box verification experiment.
791    o model/src & pkg/down_slope:
792      - push the k loop inside S/R TIMESTEP_TRACER (now called outside the k loop).
793      - in dwnslp_apply.F, update tracer tendency instead of the future tracer
794        field and call S/R DWNSLP_APPLY before TIMESTEP_TRACER; this affects
795        results at machine truncation level: update output of experiments
796        global_ocean.90x40x15.dwnslp (FWD) and lab_sea.noseaicedyn (AD).
797    o pkg/diagnostics (Stats-Diags):
798      - do not cumulate the full volume when DIAGNOSTICS_FILL is
799        called with bibjFlg < 0 (no increment of the counter for 2D/3D diag);
800        This fix the mean statistics when DIAGNOSTICS_FILL is called multiple
801        times (but Min,Max and StD are still wrong).
802    o model/src:
803      - add geothermal flux forcing: read in ini_forcing.F as time-constant
804        field "geothermalFlux" applied in S/R APPLY_FORCING_T (apply_forcing.F)
805    o model/src:
806      - move CYCLE_TRACER calls from tracers_correction_step.F to temp/salt/ptracer
807        _integrate.F so that, when leaving S/R THERMODYANMICS, theta,salt and pTrac
808        arrays are already updated while adjustments (filters, conv.adjustment) are
809        still applied later, in S/R TRACERS_CORRECTION_STEP.
810    o model/src:
811      - store in common bloc array "rhoInSitu" the virtual potential temperature
812        anomaly that is used to compute geopotential: this make the atmos code
813        more similar to ocean code which already uses rhoInSitu in calc_phi_hyd.F
814    o pkg/seaice/seaice_lsr.F
815      - rename integer variable ilcall to ipass (that's what it is called
816        in the residual diagnostics
817      - change time stepping for NPSEUDOTIMESTEP > 2 (does not change the
818        default) for improved non-linear convergence of the first few steps
819      - adjust a few comments and add new ones to explain some of the store
820        directives
821    o pkg/generic_advdiff (& ptracers):
822      - re-work the code to check for valid advection scheme and for minimum
823        size of overlap (now stored in local common bloc in gad_advscheme.F)
824    o pkg/seaice: another attempt to make the adjoint work for sea ice dynamics
825      - re-initialize more variables in seaice_lsr: u/vIceC, u/vIceNm1
826      - add an auxilliary variable "bet" and fix store directives and keys in
827        seaice_lsr_tridiagu/v, this seems to do the trick (i.e. more or
828        less exact gradients in my tests); but there are still
829        recomputation warning (although gradients are sort of OK), when
830        SEAICE_LSR_VECTORIZE is not defined, so this flag and
831        SEAICE_LSR_VECTORIZE_ZEBRA are recommended for efficiency.
832      - update verification experiments lab_sea.
833      - change some comments in S/R seaice_calc_viscosities
834    o model/src:
835      - if staggerTimeStep=T, always apply exchange to velocity field in
836        do_stagger_fields_exchanges.F instead of in do_fields_blocking_exchanges.F
837        (independent of using multi-dim advection or not); no effect on FWD run
838        but affects AD results (at machine truncation level): update output of
839        experiment 1D_ocean_ice_column (ad: 12 digits), hs94.1x64x5 (ad,oad: 13.d)
840        and isomip (oad: 12.d).
841    o pkg/generic_advdiff:
842      - stop if doAB_onGtGs is set to FALSE but ignored
843      - refine warning related to stability of tracer time-stepping
844        regarding internal wave dynamics.
845      - setting of AdamsBashforth_T,S when doAB_onGtGs=F: remove condition
846        on staggerTimeStep & implicitIntGravWave (will now get a warning
847        if potentially unstable).
848    o pkg/kl10:
849      - add new pkg "kl10" for mixing due to internal wave breaking, from
850        http://www.sciencedirect.com/science/article/pii/S1463500310000144
851        (contribution from Jody Klymak), tested in verification experiment
852        verification/internal_wave/input.kl10/
853    o isomip experiment:
854      - test pkg/shelfice with Non-Lin Free-Surf in one of the FWD set-up
855        (input.htd) and update the output.
856    o cd_code experiments:
857      - use default cd_code options (#undef CD_CODE_NO_AB_MOMENTUM &
858        #undef CD_CODE_NO_AB_CORIOLIS) in experiments: cfc_example (fwd)
859        global_ocean.90x40x15 (ad & oad) and OpenAD (ad & oad) and
860        update the corresponding output.
861    o pkg/seaice:
862      - reduce the number of include files and store directives in
863        S/R seaice_lsr_tridiagu/v
864      - change the order of loops in one case in S/R seaice_lsr_tridiagv
865        (only for SEAICE_VECTORIZE_LSR_ZEBRA defined), which allows me to
866        get rid off one store directive (a TAF bug?)
867      - add one more instance of ifdef SEAICE_VECTORIZE_LSR_ZEBRA in
868        S/R seaice_lsr_tridiagv to change the loop range for consistency
869      - remove ilcall, m from parameter list of S/R seaice_lsr_tridiagu/v
870      - fix a bug that affects the JFNK solver: replace sNx/y by i/jMax in
871        S/R seaice_lsr_tridiagu/v (requires update of
872        offline_exf_seaice/input.dyn_jfnk)
873    
874    checkpoint65a (2014/07/27)
875    o model/src:
876      - Non-Lin Free-Surf in p/z coords: allows hFacW,S to be larger than
877        surrounding hFacC=1 @ edge of a step with different kSurfC on either side
878        (topo in p-coords, ice-shelf in z-coords); update output of experiments
879        tutorial_global_oce_in_p and isomip (both AD and OpenAD output).
880    o model/src:
881      - collect momentum forcing tendency into local 2-D array (passed as argument
882        to apply_forcing S/R); this simplifies mom. Forcing diagnostics and CD_CODE
883        parts in timestep.F (without CD_CODE_NO_AB_MOMENTUM defined = the default);
884        affects results at machine truncation level (e.g., if using OBCS_SPONGE).
885      - collect T & S forcing tendency into local 2-D array (passed as argument to
886        apply_forcing S/R); add 3-D diagnostics for temp & salt forcing tendency.
887        affects results at machine truncation level (e.g., ocean: if using
888        SHORTWAVE_HEATING ; atmos: if using FrictionHeating or (atm_Rq<>0) moist
889        correction due to vertical advection).
890      - update output of experiments: fizhi-cs-32x32x40 (13 digits),
891        global_ocean.cs32x15 (fwd: icedyn, seaice, thsice, all 3 @ 11d; adm & tml:
892        seaice_dynmix & thsice, fwd grd @ 3 & 8), hs94.1x64x5 (ad grd @ 13),
893        obcs_ctrl (ad & fwd grd @ 12 & 7).
894    o pkg/ptracers & diagnostics:
895      - use ptracers (short) name (instead of long one) to make ptracers diagnostics
896        title (to avoid some unexpected truncation); sort out ptracers diags units.
897      - collect ptracer forcing tendency into local 2-D array (passed as argument
898        to apply_forcing S/R); add 3-D diagnostics for ptracers forcing tendency.
899    
900    checkpoint65 (2014/07/18)
901    o pkg/fizhi:
902      - add parenthesis around fizhi tendencies in fizhi_tendency_apply.F: this
903        affects results at machine truncation level. Update output of experiments
904        fizhi-cs-32x32x40 (12 digits for cg2d) & fizhi-cs-aqualev20 (13 digits).
905    o pkg/seaice: more clean up
906      - rename TAF common block tapes to be more consistent and remove
907        unnecessary duplicates
908      - add store directives to remove more recomputations, but use smaller
909        tapes (and adjust keys) when SEAICE_LSR_ADJOINT_ITER is undefined.
910        The idea behind this flag is to reduce the memory footprint when the
911        adjoint of the LSR is not required. As of now, defining the flag
912        SEAICE_LSR_ADJOINT_ITER increases 4 common block tapes for 2D field by
913        a factor of SOLV_MAX_FIXED (=500 by default in SEAICE_SIZE.h).
914        For experiment offline_exf_seaice, this means on a linux box with gfortran
915        nearly a factor of 10 (but keep in mind there is mostly seaice code in
916        this experiment):
917        > size mitgcmuv_ad
918        text    data        bss     dec        hex
919        5100659 1216  220458952  225560827  d71c8fb
920        5339425 1200 1868783272 1874123897 6fb4dc79 (SEAICE_LSR_ADJOINT_ITER)
921        but only a moderate increase of 36% for global_ocean.cs32x15:
922        text    data        bss     dec        hex
923        6695027 1648 1014578664 1021275339 3cdf6ccb
924        6695203 1648 1382505320 1389202171 52cd8afb (SEAICE_LSR_ADJOINT_ITER)
925      - note: there are still recomputations in global_ocean.cs32x15 and
926        offline_exf_seaice and the gradient agreement changes (gets a
927        little worse) for global_ocean.cs32x15 (-> update output_adm.seaice.txt)
928      - in general, the AD gradients still are wrong
929    o OpenAD
930      - clean up code_oad/ directories somewhat by moving files
931        dontCompile, dontTransform, keepOriginal to OAD_support/
932    o model/src:
933      - using MOM fluxform and Non-Lin Free-Surf with momDissip_In_AB=F
934        (not currently tested): add dissipation terms before NLFS rescaling of
935        tendencies (previously done after).
936    o pkg/diagnostics:
937      - write stats-diags in ascii file with more digits (same as in monitor).
938    o pkg/down_slope:
939      - drop the bi,bj dimension of argument recip_hFac in S/R DWNSLP_APPLY; with
940        NLFS (not tested), use new recip_hFac value in order to conserve tracer.
941    o model/src:
942      - new file "apply_forcing.F" containing all the code previously in
943        external_forcing.F, but with new argument list: pass, as new argument,
944        the current level tendency array to update (instead of a direct update
945        of the common bloc array). Change the corresponding calls.
946      - add CPP option USE_OLD_EXTERNAL_FORCING (default is undef) to use
947        EXTERNAL_FORCING_U,V,T,S subroutines (for backward compatibility).
948    o pkg/seaice/seaice_lsr, a little bit of clean up
949      - rearrange some code blocks, so that now all calculations for
950        setting up the right-hand-sides done within one single block
951        (I find that easier to read and understand)
952      - rearrange freedrift-code to reduce the number of ifdefs
953      - adjust some indentations and comments
954    
955    checkpoint64z (2014/07/10)
956    o model/src and several pkgs:
957      - change argument list of all S/R called from external_forcing.F and
958        called from ptracers_forcing.F (renamed to ptracers_apply_forcing.F)
959        to pass, as argument, the current level tendency array to update
960        (instead of a direct update of the common bloc array).
961      - change also (in the same way) argument list of PTRACERS_APPLY_FORCING;
962      - rename taueddy_external_forcing.f to taueddy_tendency_apply.F
963    o pkg/seaice/seaice_lsr.F
964      - always initialize local arrays in seaice_lsr_tridiagu/v
965      - add more local tapes to seaice_lsr_tridiagu/v
966      - move storing u/vice(:,:,bi,bj) out of seaice_lsr_tridiagu/v, but
967        keep it in bi/bj loop; this seems to be essential
968      - gradients are still wrong but only by 4-7 orders of magnitude
969        instead of 15 orders of magnitude, lab_sea improves a little
970    o pkg/seaice
971      - (pkg/autodiff) remove storing/restoring of seaiceMaskU/V that
972        generates unnecessary code in seaice_lsr_ad
973      - add more store directives in seaice_lsr to avoid unnecessary code
974        in seaice_lsr_ad
975      - exclude some residual computations in seaice_lsr when
976        ALLOW_AUTODIFF_TAMC is defined in order to avoid unnecessary code
977        in seaice_lsr_ad
978      - add more storing, a new tape (model/src/the_main_loop.F) and
979        another key for SEAICE_LSR_VECTORIZE_ZEBRA (the local keys ilockey
980        and klockey should be checked by a specialist)
981      - modify ( define SEAICE_VECTORIZE_LSR and SEAICE_LSR_ADJOINT_ITER )
982        and update lab_sea after previous changes in pkg/seaice below
983    o pkg/autodiff:
984      - introduce useSmoothCorrel2DinAdMode, SEAICEapproxLevInAd, and
985        viscFacInAd : run time parameters allowing for adjoint switches
986        note : logic for useSmoothCorrel2DinAdMode is in ctrl_readparms.F
987    o pkg/ecco:
988      - introduce cost_gencost_boxmean.F that computes a box mean
989        temperature (for use in adjoint sensitivity studies).
990    o model/src/set_defaults.F : initialize viscFacAdj to 1.
991    o pkg/mom_common/mom_calc_visc.F:
992      - ifdef ALLOW_AUTODIFF then include viscFacAdj factor.
993    o pkg/seaice/seaice_summary.F:
994      - statement for SEAICEadjMODE now in autodiff_readparms.F
995    o pkg/seaice:
996      - remove some store directives and add new ones in an effort to get
997        finally rid off the recomputation warnings. This is successful
998        when SEAICE_VECTORIZE_LSR ***and*** SEAICE_LSR_ADJOINT_ITER are
999        defined (i.e. no extensive recomputation warnings left), but there
1000        are still too many recomputations on the solver iteration level
1001      - define SEAICE_VECTORISZE_LSR in offline_exf_seaice/code_ad/SEAICE_OPTIONS.h
1002      - move definition of MPSEUDOTIMESTEPS into TAMC-block in
1003        SEAICE_SIZE.h
1004      - add a store directive in S/R seaice_calc_viscosities
1005    o pkg/seaice (ITD code):
1006      - fix definition of Hlimit for multi-threaded case
1007      - use double precision arithmetic to compute Hlimit: this affects results;
1008        update output of experiment seaice_itd.
1009    o replace content of verification/seaice_itd
1010      - instead of a 1D column use the configuration of offline_exf_seaice
1011        to test the ice thickness distribution code with ridging
1012      - this is a first shot at this experiment
1013      - change of some defaults of ridging parameters SEAICEhStar (from
1014        100 to 25) and SEAICEmuRidging (from 5 to 3) in seaice_readparms.F
1015        and lot of new comments.
1016    
1017    checkpoint64y (2014/06/20)
1018    o pkg/seaice/seaice_reg_ridge.F:
1019      - modify the regularization of very small volumes of ice; only check
1020        total volume HEFF, and do not apply correction to individual ice
1021        classes because that leads to funny patterns in the heat and fw-fluxes
1022        into the ocean. Adjust seaice_itd/results/output.txt
1023      - replace nITD by SEAICE_multDim in loop-ranges
1024    o pkg/exf:
1025      - add code to process the case field period = -12. with UV interpolation.
1026      - move debug print (formerly active when exf_verbose=T) from EXF_getFFieldRec
1027        into S/R that calls it (i.e., exf_set_gen.F, exf_set_uv.F & obcs_exf_load.F)
1028    o verification/global_with_exf:
1029      - switch all fields period to -12. (was previously untested) in input/data.exf
1030        (but keep secondary test ".yearly" unchanged); update the reference output.
1031    o pkg/cal:
1032      - new calendar type "noLeapYear" for 365 days calendar without any leap year.
1033    o pkg/exf:
1034      - new integer parameter "exf_debugLev" (default set to main model debugLevel)
1035        to replace logical switch "exf_verbose"
1036      - report in STDOUT when loading a new record (if exf_debugLev >= 3)
1037    o pkg/sbo:
1038      - update from Katherine Quinn: evaluate mass directly from density and SSH
1039        (budget using Finite Volume method) instead of from bottom pressure.
1040      - allow testreport to collect few selected SBO output ; tested in exp.
1041        global_ocean.90x40x15 (after updating the results, to include SBO output).
1042      - fix some multi-threading issues (in output part).
1043    o model/src & most packages:
1044      - always call {PKG}_READPARMS even if corresponding use{PKG}=F;
1045      - in {PKG}_READPARMS, in case use{PKG}=F: add a call to new S/R
1046        PACKAGES_UNUSED_MSG to print a weak warning when parameter file
1047        "data.{pkg}" exist ; and leave the S/R (return) just after.
1048      - more standard LAND pkg interface (land_init_fixed.F, land_check.F).
1049        + call LAND_READPARMS from packages_readparms.F
1050    o pkg/seaice:
1051      - remove code that resets useThSice in S/R seaice_readparms and
1052        replace it by a warning in S/R seaice_check
1053      - remove parameter MULTDIM, replace with nITD and runtime
1054        parameter SEAICE_multDim (still hard-wired to nITD if
1055        SEAICE_ITD is defined)
1056    
1057    checkpoint64x (2014/05/24)
1058    o verification/lab_sea:
1059      - update adjoint and TLM output following changes to pkg/salt_plume
1060      - un-do the update after putting back local recip_Cp in few places.
1061    o pkg/salt_plume: modifications by An Nguyen:
1062      - add capability to do brine rejection (salt-plume) as function of
1063        volume+tracers (instead of only salinity tracer).
1064      - conserve volume by exchanging volume from each kLev to above to
1065        accommodate in-coming brine volume
1066      - store surface and klev exchanged fraction + volume in 4 new 3-d arrays
1067      - switch KPP surf buoyancy due to brine forcing to 3-d
1068        (3 more 3-d arrays, 2 for SPforcing[T,S], 1 for boplume)
1069      - add salt_plume_volfrac, salt_plume_apply, salt_plume_tendency_apply_t
1070      - unrelatedly, also add ad-hoc capability to vary salt_plume scheme
1071        in East/West Arctic.
1072    o pkg/sbo:
1073      - incorporate modifications from Katherine Quinn to enable the use of sbo
1074        pkg in ECCO-v4 set-up ; remove SBO-TimeAve output ; add monitor-like
1075        output for future testreport verification (unfinished).
1076    o pkg/atm_phys:
1077      - change diagnostics (AtPh_Trf & AtPh_Qrf) of DARGAN_BETTSMILLER S/R:
1078        skip the reseting of t_ref & q_ref to initial t & q ; this preserve the
1079        output of S/R CAPECALCNEW (Parcel temp & q) for diagnostics.
1080    o pkg/seaice
1081      seaice_calc_ice_strength.F: modify expression to avoid divisions
1082        (affects truncation)
1083      seaice_do_ridging.F: clean up the insectarium
1084      - fix a bug that was compensated by areaScaling (-> remove areaScaling code)
1085      - added SEAICEsnowFracRidge to redistributed snow (2nd bug)
1086      - set closing/openingRate to zero where no extra iteration is need (3rd bug)
1087      - add some debugging information and error messages (warnings)
1088    o model/src: modifications relatd to atmosphere p*:
1089      - Switch to more accurate p* coordinate slope term (calc_grad_phi_hyd.F)
1090      - With p* or Sigma-P, use constant reference Pot.Temp (thetaConst) instead
1091        of vertical profile tRef in geopotential background and anomaly.
1092      - Acount for true p* correction in theta <-> T conversion in pkg/aim_v23
1093        and pkg/atm_phys.
1094      - Update FWD output of experiments: aim.5l_cs (x2), fizhi-cs-32x32x40,
1095        fizhi-cs-aqualev20, fizhi-gridalt-hs, tutorial_held_suarez_cs, cpl_aim+ocn.
1096    o pkg/seaice: fix a bug in seaice_prepare_ridging.F, forgot a sqrt
1097    o pkg/ptracers: compute ptracer source/sink due to linear free surface.
1098        not used right now, but can be used in BGC packages to fix conservation.
1099    o pkg/dic, pkg/gchem: move tracer_meanarea to gchem, so it can be used by
1100        other packages too.
1101    o pkg/seaice/seaice_calc_ice_strength.F: replace SEAICE_rhoSnow by
1102        SEAICE_rhoIce in the Rothrock (1975)-type strength calculations (bug fix)
1103    o model/src:
1104      - since we have several heat capacity (even in model/src), define "recip_Cp"
1105        as local variable (no longer in common block) to avoid any confusion.
1106      - add thetaConst in PARAMS.h (to be used with pStar or sigma-P coords).
1107    o pkg/exf:
1108      - from Jeff Scott: add option (#define EXF_CALC_ATMRHO) to calculate local
1109        air density as function of air Temp, Humidity and atm pressure.
1110    
1111    checkpoint64w (2014/05/02)
1112    o verification:
1113      - update output_adm.txt files for experiment global_ocean.cs32x15 (seaice &
1114        seaice_dynmix) and lab_sea (primary test & noseaicedyn): moving/changing
1115        code from seaice_growth.F & seaice_advdiff.F to new ridging routines
1116        seaice_reg_ridge.F seaice_do_ridging.F affects AD gradient
1117        (down to 8-7 matching digits for global_ocean and 5-6 for lab_sea).
1118    o model/src: for atmosphere in p* coords:
1119      - store factor rStarFacC**atm_kappa (= pStarFacK) in common block
1120      - implement more accurate p* coordinate slope term (in calc_grad_phi_hyd.F),
1121        but not yet activated.
1122    o pkg/seaice: fix restart problem for ITD with new ice strength parameterisation:
1123      - move computation of opnWtrFrac = 1-AREA to before computing ice strength
1124      - this changes the results (but not for any verification experiment, because
1125        none tests this), but avoids having an extra field in the restart files
1126    o pkg/seaice: remove global variable TICE (not needed)
1127      - replace by TICES or local variable where necessary (cost_seaice_test,
1128        seaice_diagnostics_state)
1129      - move copying TICE to TICES from seaice_check_pickup to seaice_read_pickup
1130      - use specific read/write routines for reading and writing individual leves
1131        of a multilevel field
1132    o pkg/ctrl & model/inc:
1133      - move additional anomaly fields of control vars (related to options:
1134         ALLOW_KAPGM_CONTROL, ALLOW_KAPREDI_CONTROL and ALLOW_BOTTOMDRAG_CONTROL)
1135        from DYNVARS.h into new header file: CTRL_FIELDS.h
1136    o pkg/seaice: some small modifications to the ridging code
1137      - make fw2ObyRidge a global variable and add the freshwater flux to
1138        seaice_growth
1139      - pass actual thickness from seaice_prepare_ridging, so that it is
1140        computed only in one place and compute it in the same way as in
1141        seaice_growth
1142      - initialise more fields in seaice_do_ridging that where cause floating
1143        point exceptions over land
1144    o pkg/seaice: preparations for ridging code and first real ridging code
1145      - move most of "PART 1" of S/R seaice_growth into a new and separate
1146        S/R seaice_reg_ridge that will both regularize the state variable after
1147        advection call the actual ridging routine;
1148      - requires to make 5 fields global fields: d_HEFFbyNEG,d_HSNWbyNEG,
1149        d_AREAbyRLX,d_HEFFbyRLX,saltFluxAdjust;
1150      - remove ridging code from seaice_advdiff
1151      - clean up remaining part 1 of seaice_growth in an attempt to make it
1152        more readable (this is probably subjective)
1153      - call seaice_itd_redist once in the initialisation phase to have the initial
1154        conditions in the correct category
1155      - finally: add new ridging routine for ITD code
1156    
1157    checkpoint64v (2014/04/11)
1158    o pkg/ecco:
1159      - add runtime parameters mdt[start,end]date[1,2]
1160      - rename variable "tpmean" as "mdt" and "topexmeanfile" as "mdtdatfile"
1161    o pkg/seaice:
1162      - make deltaC a global variable, so that it can be used in ridging code
1163      - first step towards ridging: introduce new routines that compute
1164        ice strength based on ridging parameters
1165      - add diagnostic for HSNOWITD
1166      - add opnWtrFrac as a global variable (required for ridging scheme)
1167    o pkg/salt_plume + pkg/seaice/seaice_growth.F
1168      - add SALT_PLUME_IN_LEADS flag to activate pkg/salt_plume only when ice
1169        AREA exceeds a threshold (code contributed by I.Fenty in 2011)
1170    o verification/hs94.1x64x5:
1171      - leave ALLOW_AUTODIFF_TAMC undefined in code_oad/AUTODIFF_OPTIONS.h
1172      - do not use ECCO_CPPOPTIONS.h anymore for TAF & OpenAD Adjoint tests.
1173    o autodiff:
1174      - Start to include explicitly AUTODIFF_OPTIONS.h, COST_OPTIONS.h,
1175        and CTRL_OPTIONS.h in src files (to enable to skip the ECCO_CPPOPTIONS.h)
1176        For now, only in pkgs used in verification/hs94.1x64x5.
1177      - Replace ALLOW_AUTODIFF_TAMC by ALLOW_AUTODIFF (except for tape/storage
1178        which are specific to TAF/TAMC).
1179      - Replace ALLOW_AUTODIFF_OPENAD by ALLOW_OPENAD:
1180        since ALLOW_OPENAD is defined in PACKAGES_CONFIG.h (any time pkg/openad
1181        is compiled), this simplifies/reduces which *_OPTIONS.h file to include.
1182      - OpenAD: change Makefile to generate the appropriate AD_CONFIG.h when
1183        building mitgcmuv_ad (make adAll).
1184    o pkg/ecco:
1185      - cost_gencost_seaicev4.F:
1186         reformulate proxy cost as function of sst and local param SEAICE_freeze
1187         change cost names from siv4-[sst,vol] to siv4-[deconc,exconc]
1188      - add stop statement if old names siv4-[sst,vol] are used
1189      - add snapshots + cost reports for atmospheric longwave
1190      - remove factor 0.1 in front of wtau[u,v]
1191      - replace never used flag ALLOW_TMI_COST_CONTRIBUTION with
1192         ALLOW_TMI_SST_COST_CONTRIBUTION
1193    o pkg/atm_phys:
1194      - add some diagnostics for Short-wave and for convection S/R.
1195    o pkg/seaice/seaice_growth:
1196      - fix a bug in the lateral melt parameterization for SEAICE_ITD
1197        in seaice_growth; tempFrz needs to be computed inside the i/j-loop
1198      - rearrange loop order for better vector code in the same code block
1199      - rewrite the floeDiameter formula to have fewer divisions
1200      -  (miraculously) none of this changes the results of seaice_itd
1201    o pkg/smooth:
1202      - move param smooth2Ddiffnbt to pkg/ecco
1203    o pkg/salt_plume:
1204      - salt_plume_frac.F:
1205         clean up local param names
1206         reformulate (1-frac) to frac; original 1-frac was based on swfrac code
1207    o pkg/rw:
1208      - add RS version of S/R READ_MFLDS_LEV.
1209    o pkg/streamice:
1210      - fix the restart test by writing/reading pickup_streamice files.
1211    o pkg/seaice:
1212      - refine checks for jfnk-related parameters
1213      - comment out if statement with SEAICEuseIMEX parameter as long as there
1214        is no IMEX code to avoid confusion and surprises
1215    
1216    checkpoint64u (2014/03/07)
1217    o verification/MLAdjust:
1218      - rename secondary test suffix:
1219         1.leith  -> A4FlxF  + switch to flux-form & add side-drag
1220         0.leithD -> AhFlxF  + switch to flux-form
1221         0.smag   -> AhVrDv  (use Vorticity-Div. visc form) + add side-drag
1222         0.leith  -> AhStTn  (use Strain-Tension visc form) + add side-drag
1223    o pkg/mom_vecinv:
1224      - remove unused arguments from S/R MOM_VI_HDISSIP & MOM_HDISSIP (as it used
1225        to be before mom_calc_visc.F)
1226      - skip the call to MOM_CALC_TENSION & MOM_CALC_STRAIN if not needed.
1227      - add 2nd copy of vort3 & strain that knows about lateral BC (free/no slip):
1228        this is simpler for the adjoint and for diagnostics.
1229    o model/src + pkg/momentum:
1230      - add input files for  2-D additional Western and Southern cell-edge wall
1231         (e.g., to add "thin-wall" where it is =1).
1232      - fix sideDrag option for thin-walls with Non-Lin Free-Surf
1233        using 2nd hFacZ that is computed from initial (fix domain) hFac
1234      - known limitations of thin wall implementation: not yet coded for sigma
1235        coords; not working with CD-scheme neither.
1236    o pkg/seaice:
1237      - rename recently introduced parameters from (wrong name) AB to
1238        BDF (backward difference time discretisation)
1239      - retire runtime parameters SEAICEuseAB2, SEAICE_abEps
1240    o tools/adjoint_options:
1241      - remove setting of "OPENAD=true" (now set by command line "genmake2 -oad")
1242    
1243    checkpoint64t (2014/02/01)
1244    o pkg/ecco
1245      - add compile flag ALLOW_GENCOST_TIMEVARY_WEIGHT in ECCO_OPTIONS.h and
1246        runtime logical flag gencost_timevaryweight to read daily sea-ice sigma
1247      - replace hard-coded record number and period which only work for monthly
1248        with read-in runtime param that works for other periods (month,day,year)
1249    o pkg/thsice
1250      - corrected store directive fixes thsice adjoint gradient checks
1251    o genmake2 & testreport:
1252      - add genmake2 option "-oad" to generate a Makefile for OpenAD built and
1253        in this case, use tools/adjoint_options/adjoint_oad as default AD optfile.
1254        Update testreport accordingly. No need to set "export OPENAD=true"
1255        in adjoint_options/adjoint_oad anymore (will be removed later).
1256    o pkg/shelfice:
1257      - put T & S shelfice forcing into model surfaceForcing_T,_S (for now,
1258        only if SHELFICEboundaryLayer=F); Change model/src/external_forcing.F
1259        so that surface forcing applies to k=kSurf if using pkg/shelfice.
1260    o pkg/ctrl, pkg/grdchk, pkg/ecco:
1261      - Changes to make GENARR more modular (i.e. invisible if not used)
1262    o model/src/temp_integrate.F and salt_integrate.F
1263      - re-include store directives that were removed on Dec 27th.
1264    o model/src/external_forcing_surf.F
1265      - add storage directives for EmPmR and PmEpR to avoid recomputation of
1266        seaice_model in the adjoint that is problematic when seaice_model is
1267        turned off in the adjoint. The resolved issue dated back to July when
1268        EXTERNAL_FORCING_SURF call was moved.
1269        Update global_ocean.cs32x15/*/output_adm.seaice_dynmix.txt accordingly.
1270    o pkg/exf/exf_check.F
1271      - fix a small bug again (originally found by Wentao Liu, now found again)
1272      - streamline error output
1273    o pkg/streamice and aim_v23:
1274      - replace a few "_EXCH_XY_RL (" with "_EXCH_XY_RL(", so that
1275        Apple's /usr/bin/cpp knows what to do:
1276        Apple LLVM version 5.0 (clang-500.2.79) (based on LLVM 3.3svn)
1277        Target: x86_64-apple-darwin13.0.0
1278    
1279    checkpoint64s (2014/01/05)
1280    o tools/adjoint_options:
1281      - switch to fastopt.net TAF server (instead of default fastopt.de) for
1282        AD optfiles adjoint_diva & adjoint_f95 (similar to adjoint_default).
1283    o model/src:
1284      - remove some unnecessary TAF storage directives in forward_step.F and
1285        in dynamics.F (note: not always removed by TAF, e.g., double storage
1286        of kappaRU,kappaRV in former version of dynamics.F).
1287    o model/src & pkg/ptracers:
1288      - call directly GAD_IMPLICIT_R & IMPLDIFF + DWNSLP_APPLY from temp_integrate.F
1289        salt_integrate.F and ptracers_integrate.F (instead of from thermodynamics.F)
1290        and remove ptracers_dwnslp_apply.F & ptracers_implicit.F
1291      - call MATRIX_STORE_TENDENCY_EXP for each tracer (in ptracers_integrate.F)
1292      - add fZon & fMer as output argument of S/R GAD_CALC_RHS.
1293      - update TAF AD-output of experiments global_ocean.90x40x15 (13 for AD-grad).
1294    o useSingleCpuInput separates single-CPU input from single-CPU output;
1295        for now only implemented for in exf_interp_read.F
1296    o verification/advect_xy:
1297      - fix missing EXCH call in local version of ini_salt.F and update output.
1298    o momentum diagnostics:
1299      - fix which deltaT is used in Total-Tendency diagnostics.
1300      - fix typo in diagnostics for momentum tendency from AB.
1301    o pkg/seaice/seaice_lsr.F: fix an initialisation bug for the
1302        SEAICE_VECTORIZE_LSR_ZEBRA option that lead to NaNs on a NEC-SX8
1303    
1304    checkpoint64r (2013/12/08)
1305    o verification/*/results:
1306      - Update reference output of experiments that were passing with just 13 digits
1307         (make it easier to detect future changes in results)
1308    o model/src & pkg/ptracers:
1309      - move calls to GAD_ADVECTION (Multi-Dim advection) from thermodynamics.F to
1310        inside temp_integrate.F and salt_integrate.F and from ptracers_advection.F
1311        to inside ptracers_integrate.F ; remove ptracers_advection.F
1312    o coupling interface pkgs:
1313        [atm_compon_interf, ocn_compon_interf & atm_ocn_coupler]
1314      - change the config check to test the agreement of Ocean Depth
1315        with ATM land/sea mask (instead of ATM orography);
1316      - send to coupler the number of coupler time-steps to do for this run:
1317        this allows to check for consistency and don't need anymore to be
1318        specified in parameter file "data";
1319      in coupler:
1320      - check consistency of RunOff map versus Ocean Depth and ATM land/sea mask.
1321      - improve report to log-file of config setting (pass log-file unit to few S/R)
1322    o pkg/compon_communic:
1323      - add coupling send/receive for non-tiled integer vector;
1324      - add S/R to check and stop if any proc has an error (similar to
1325        eesupp/src/stop_if_error.F but single thread and across Comm_World).
1326    o pkg/exch2:
1327      - in exch2*_get_rx[1,2]: use new list "W2_tileIndex" to replace search
1328        through list of all tiles my proc owns.
1329    o model/src:
1330      - AUTODIFF only: in calc_adv_flow.F, recompute rTransKp (instead of copying
1331        from rTrans) to simplify dependencies (no need to store rTrans anymore in
1332        calling S/R); this affects AD results at machine truncation level:
1333        update AD-output (TAF) of experiments: 1D_ocean_ice_column,
1334        bottom_ctrl_5x5 & obcs_ctrl (12 digits for AD grad, same FWD grad).
1335    o tools/build_options:
1336      - simplify Warnings options (-ieee & -devel cases) in linux_amd64_gfortran
1337    o coupling interface pkgs:
1338        [compon_communic, atm_compon_interf & ocn_compon_interf]
1339      - move declaration of local array "ibuf" out of header file "CPLR_SIG.h"
1340        to each S/R that needs it; remove un-used variables.
1341      - change component tile registration (cpl_register.F in both compon_interf
1342        and mitcomponent_tile_register.F) to pass the full list of tiles
1343        information (including bi,bj) in 1 vector (instead of in a bi,bj matrix).
1344      - with pkg/exch2: adopt the same convention used for I/O to define mapping
1345        towards coupler global array (unless W2_useE2ioLayOut=F):
1346         a) can now use different tiling between atm & ocn comp.
1347         b) no needs to modify the run-Off map when changing tiling (was needed
1348            even if using the same tiling between atm & ocn).
1349         c) will allow to run with blank-tiles in 1 component (e.g., for ocean
1350            full land tiles); not yet tested.
1351      - check for valid mapping from comp. tile to coupler global array
1352      - improve report of tile registration results to log file.
1353    o pkg/exch2:
1354      - in eesupp/src/eeboot.F: move call to W2_EEBOOT before Coupler
1355        tile-registration (CPL_REGISTER);
1356      - activate (un-comment) definition and setting of "W2_tileIndex" list to
1357        store the local bi,bj indices of each tile;
1358      - also print bi,bj in local report to log file;
1359      - fix pkg/debug/debug_cs_corner_uv.F for the case nSy > 1 (left from
1360        Jun 2009 modif of pkg/exch2).
1361    o testing on baudelaire:
1362      - run 2 tests at a time: no significant slow down (since enough cpu) and
1363        get the full set of test done earlier
1364      - switch the ifort test to "-devel" ; run the OpenAD test everyday.
1365    o model/src/thermodynamics.F and routines called from it:
1366      - pkg/gmredi: gmredi_residual_flow.F (replacing gmredi_calc_uvflow.F &
1367        gmredi_calc_wflow.F) to update eulerian velocity (input) into residual
1368        velocity (outp) by adding bolus velocity.
1369      - model/src: calc_adv_flow.F (replacing calc_common_factors.F) to compute
1370        mass transport from velocity + lateral grid cell area
1371      - rename calc_gt.F to temp_integrate.F (includes call to TIMESTEP_TRACER)
1372      - rename calc_gs.F to salt_integrate.F (includes call to TIMESTEP_TRACER)
1373     in thermodynamics.F
1374      - remove k from thermodynamics.F and move it to temp_integrate.F
1375        salt_integrate.F and ptracers_integrate.F (now done inside the tracer
1376        loop).
1377      - compute locally (in thermodynamics.F) 3-D velocity field that is used to
1378        advect tracers; pass it as argument to GAD_ADVECTION, GAD_SOM_ADVECT,
1379        PTRACERS_ADVECTION, TEMP_INTEGRATE, SALT_INTEGRATE, PTRACERS_INTEGRATE,
1380        GAD_IMPLICIT_R and PTRACERS_IMPLICIT
1381      - update AD-output (TAF & OAD) of experiments: 1D_ocean_ice_column,
1382        global_ocean.90x40x15, tutorial_global_oce_biogeo and
1383        tutorial_tracer_adjsens (+ TLM output).
1384    o tools/OAD_support and (verification/*/) code_oad:
1385      - OAD_support/cb2mGetModules.csh: add PACKAGES_CONFIG.h in header file to
1386        module conversion ; remove unneeded CPP_EEOPTIONS.h.
1387      - code_oad/CPP_OPTIONS.h: remove PACKAGES_CONFIG.h and use a more standard
1388        version (closer to model/inc/CPP_OPTIONS.h).
1389    o model/src:
1390      - remove parameter "useOldFreezing" from PARAMS.h and push it to the
1391        retired list of parameters (routine FREEZE has been replace by surface
1392        freezing (10.yrs ago) and by pkg/frazil (interior freezing).
1393    o pkg/gmredi:
1394      - add option (GM_CALC_TRANSP_FROM_VEL) to compute transport directly from
1395        velocity (same scheme but affects machine truncation) for GM_AdvForm.
1396      - update output of FWD experiments: front_relax.bvp,
1397        global_ocean.90x40x15.dwnslp, global_ocean.cs32x15 and ideal_2D_oce.
1398    
1399    checkpoint64q (2013/11/17)
1400    o verification:
1401      - generate new output on baudelaire (gfortran, -ieee) for OpenAD experiments
1402        tutorial_global_oce_biogeo and global_ocean.90x40x15.
1403      - generate new output (growth & melt) for seaice_itd experiment after
1404        updating the input pickup_seaice files (previously wrong).
1405    o pkg/cost:
1406      - define a "final cost function" for each tile, and use GLOBAL_SUM_TILE_RL
1407        (instead of _GLOBAL_SUM_RL) to get the final cost from all procs & threads:
1408        o this fixes global-sum value if multi-threads (since GLOBAL_SUM_RL
1409          cannot be applied to var in common block).
1410        o allows to get results independent of tile-per-proc setting (if using
1411          slower GLOBAL_SUM_SEND_RECV option).
1412      - update accordingly: seaice_cost_final.F, shelfice_cost_final.F,
1413        thsice_cost_final.F and ecco_cost_final.F (this one affects lab_sea
1414        forward gradients: update output).
1415      - update */code_oad/externalDummies.F by adding dummy GLOBAL_SUM_TILE_RL
1416        S/R and, for most exp., also comment out GLOBAL_SUM_R8.
1417    o pkg/mom_common:
1418      - move to pkg/mom_common and model/src (previously in tutorial_deep_convection
1419        code) 2nd version of isotropic 3-D Smagorinsky code interface: strain and
1420        viscosity are locally declared in dynmics.F and pass as argument to CALC_GW;
1421        ensure that all field value that are used are set.
1422    o tutorial_deep_convection (smag3d):
1423      - add missing scaling in mom_calc_smag_3d.F;
1424      - set smag3D_coeff in input.smag3d such that results do not change.
1425    o pkg/dic:
1426      - change dic_cost.F to compute cost on each tile first and then apply
1427        GLOBAL_SUM_TILE_RL: this affects forward gradient of AD experiments
1428        tutorial_dic_adjoffline & tutorial_global_oce_biogeo; update output.
1429      - remove kLev argument and use GLOBAL_SUM_TILE_RL in tracer_meanarea.
1430    o eesupp/src & pkg/mdsio:
1431      - remove gather/scatter_vector.F (from eesupp) and mdsio_read/writevector.F
1432        (from pkg/mdsio) since they are no longer used for tape IO.
1433      - move simple C subroutine "setdir.c" from pkg/compon_communic to eesupp/src
1434        (+ keep a copy in pkg/atm_ocn_coupler).
1435    o verification/isomip:
1436      - split domain in 8 squared tiles (instead of just 2) for FWD, AD & OAD tests.
1437    o tools/build_options:
1438      - optfile linux_amd64_ifort11, fast (no ieee) case:
1439        to get a working restart for all experiments, add "-fp-model source"
1440        to FOPTIM (also remove "-opt-streaming-stores auto" <- this is the default).
1441    
1442    checkpoint64p (2013/10/20)
1443    o pkg/autodiff:
1444      - adread_adwrite.F: when type and length do not match ALLOW_AUTODIFF_WHTAPEIO
1445        criteria, return to simple (default) tape IO format.
1446    o pkg/mdsio (+ eesupp/src):
1447      - rewrite/simplify tape-IO S/R (new S/R MDS_READ/WRITE_TAPE replace
1448        previous MDSREAD/WRITEVECTOR) with 2 array argument from each type (R4/R8);
1449      - fix globalFile and singleCpuIO options using simpler global mapping.
1450      - new pairs of scatter/gather vector S/R (one for each type, generated from
1451        template) corresponding to simpler global mapping.
1452      - adread_write.F: switch to new S/R (but leave old calls commented) and write
1453        to globalFile when parameter globalFiles is set to True.
1454      - switch on useSingleCpuIO in AD experiments: global_ocean.90x40x15 & isomip.
1455    o pkg/autodiff:
1456      - adread_adwrite.F: add a hack for RS arrays (when RS=real*4);
1457        with ALLOW_AUTODIFF_WHTAPEIO defined, since corresponding (real*4) is
1458        missing, just add a STOP if array type do not match.
1459    o pkg/exf:
1460      - to allow to use seaice-fraction from pkg/exf in other pkgs than pkg/seaice:
1461         rename CPP option EXF_ALLOW_SEAICE_RELAX to EXF_SEAICE_FRACTION
1462         and rename array obsSIce to exf_iceFraction.
1463    o tutorial_deep_convection:
1464      - add 1rst version of isotropic 3-D Smagorinsky code (from Louis-Philippe),
1465        for now all in this exp. code dir.
1466      - add secondary test using Smag-3D viscosity (keep very low backgroud visc for
1467        testing) and flux-limter advection scheme for Temp. (no explicit diffusion).
1468    o eesupp/src:
1469      - added SINGLE_DISK_IO option because reading of parameter files on
1470        very large number of processors did not work with existing set-up
1471    
1472    checkpoint64o (2013/09/25)
1473    o pkg/atm_phys & atm_compon_interf:
1474      - allows for coupling of gray-atmosphere (atm_phys) with ocean.
1475    o tools/build_options:
1476      - switch from "-fPIC" to "-mcmodel=medium" in optfiles: linux_amd64_gfortran
1477        & linux_amd64_ifort11 and in linux_amd64_g77 & linux_amd64_open64 also
1478        remove CPP setting (was identical to genmake2 default).
1479    o pkg/gmredi & model/src: Some updating and work done on the residual model.
1480      - created new file model/src/calc_eddy_stress.F to calculate the eddy stress.
1481      - fixed up the calculation of the eddy stress and how it is added to the
1482        external forcing via taueddy_external_forcing.F
1483      - at the moment, it is very experimental and only works with the variable eddy
1484        diffusivity calculated in gmredi_k3d.F
1485    o pkg/seaice/seaice_check.F: add a check to catch the case of specifying
1486        lw/swfluxfile instead of lw/swdownfile in data.exf together with pkg/seaice
1487    o testreport (& tools/do_tst_2+2):
1488      - for MPI test, set default COMMAND to 'mpirun -v -np TR_NPROC ./{executable}'
1489    o tools/build_options: linux_amd64_gfortran & linux_amd64_ifort11:
1490      - remove CPP='cpp -traditional -P' (this is genmake2 default)
1491      - add switch (for big setups) to use 'medium' memory-model (but leave it
1492        commented out for now). Note: needed with FC 19 to compile big setups.
1493    o pkg/atm_compon_interf:
1494      - regroup per field origin (model & pkgs) the coupling storage routines
1495         (which accumalate in time each coupling field)
1496      - move bi,bj loops inside atm_store_my_data.F and store also wind-stress;
1497        update accordingly + simplify aim_do_physics.F
1498    
1499    checkpoint64n (2013/08/26)
1500    o pkg/bbl:
1501      - update formulation to reduce dispersion of tracer properties in bbl
1502      - replaced horizontal and vertical transport parameters with velocities
1503      - changes results for verification/global_with_exf.yearly
1504    o verification/halfpipe_streamice:
1505      - change to matrix construction; update both Fwd & AD output.
1506    o verification/tutorial_tracer_adjsens:
1507      - OpenAD test: switch to vector-invariant momentum since fluxform with
1508        rStar causes problems with OpenAD; update output.
1509    o tools:
1510      - genmake2: define a common prefix for all temp-file names ; move them
1511        to local /tmp disk (but would be easy to move them back);
1512      - xmakedepend: apply the same switch for temp-files.
1513    o pkg/offline:
1514      - changes for use with rStar (NLFS): assume that we continue to provide
1515        UVELMASS/hFacW_ini & VVELMASS/hFacS_ini (hFacWi,S_ini as written in grid
1516        output files) and apply r* scaling at each time-step (function of the time
1517        varying Eta field); use normal pickup files (needed for restart with NLFS).
1518    o adjoint with OpenAD:
1519      - move OpenAD-specific files from verification/OpenAD/code_oad_all to a new
1520        package openad.  This package has to be compiled for all runs with OpenAD
1521        instead of specifying code_oad_all as a modification directory.
1522      - link the fortran templates from tools/OAD_support to the build directory
1523        for preprocessing to avoid conflicts between different setups compiled
1524        simultaneously and simplify cleanup.
1525    o pkg/exf:
1526      - in exf_getforcing.F: comment out most of the EXCH calls (fields used by
1527        main model or other pkgs are exchanged in EXF_MAPFIELDS).
1528    o model/src:
1529      - do_stagger_fields_exchanges.F: skip EXCH calls when using pkg/offline
1530        (similar to do_fields_blocking_exchanges.F).
1531    o tools/genmake2:
1532      - remove TAF output src code just before calling staf (when not doing a fresh
1533        built, will stop if things go wrong with staf).
1534      - fix target "adobj" (left from TAF version-2 transition)
1535    o pkg/diagnostics:
1536      - add a parameter to track the status of pkg/diagnostics activation;
1537        this replace/extend the use of logical param "settingDiags" (to check
1538        when adding diag to the list) to also check any DIAGNOSTICS_[]FILL* call.
1539        New S/R to print error message and stop when pkgStatus is not right.
1540      - to try: add a warning when "data.diagnostics" exist but useDiagnostics=F.
1541    
1542    checkpoint64m (2013/08/13)
1543    o model/inc:
1544      - move FCORI_MACROS.h from PARAMS(_MACROS).h to GRID_MACROS.h (left from
1545        8 yrs ago modif when Coriolis arrays were moved from PARAMS.h to GRID.h)
1546    o pkg/kpp & aim_v23:
1547      - only call DIAGNOSTICS_FILL when useDiagnostics=TRUE.
1548    o pkg/seaice:
1549      - restore (last time on 2011/12/24) ability to compile pkg/seaice with
1550        undefined pkg/exf ALLOW_ATM_TEMP or ALLOW_RUNOFF CPP-options.
1551      - only call DIAGNOSTICS_FILL when useDiagnostics=TRUE.
1552    o eesupp/src:
1553      - fix check for overlap-size argument (myOLn.GT.MAX_OLY_EXCH)
1554        in exch1_rx[_ad].template (thanks to Francois Lefeuvre report).
1555    o switch to TAF version-2:
1556      - add flow directives to "freeze" naming convention for ad-routines that
1557        are used in I/O routines of adjoint state and associated common blocks
1558        that are used in adcommon.h (backward compatible with version-1)
1559      - update all ad-optfiles (in tools/adjoint_options + few local to some
1560        verification exp) to switch to latest TAF version (currently 2.5.5);
1561        merge "*_mpi" adoptfiles into the corresponding non-mpi (but commented
1562        out except for diva).
1563      - the major change with TAF version-2 is that both the differentiated
1564        routines and the forward routines (new) are returned as part of the TAF
1565        output source code. Update genmake2 accordingly.
1566      - new output for AD experiment tutorial_global_oce_biogeo (better AD gradient
1567        with version-2 when compared to TLM or FWD gradient); other experiments
1568        output show minor changes (machine truncation level); update the few AD &
1569        TLM output with 12 matching digits only (some prior to version-2 switch).
1570    
1571    checkpoint64l (2013/08/05)
1572    o model/src:
1573      - in dynamics.F, skip the call to CALC_VISCOSITY if momViscosity=F
1574      - main_do_loop.F: no longer includes additional (AUTODIFF) header files
1575        when using TAF but only if using OpenAD.
1576    o pkg/mom_common+fluxform+vecinv:
1577      - always set horiz. viscosity arrays to background value before calling
1578        MOM_CALC_VISC (in MOM_FLUXFORM & MOM_VECINV) and call S/R MOM_CALC_VISC
1579        only when using variable horiz. viscosity (useVariableVisc=T);
1580      - simplify mom_vecinv.F (only 1 block for momViscosity).
1581    o pkg/mom_common: variable horiz. viscosity in NH code
1582      - move horiz-viscosity 3-D arrays viscAh_W & viscA4_W (used in calc_gw.F)
1583        from model/inc/NH_VARS.h to pkg/mom_common/MOM_VISC.h
1584      - store in common block (in MOM_VISC.h) logical parameters: useHarmonicVisc,
1585        useBiharmonicVisc & useVariableVisc.
1586      - fix old bug (already in 1rst implementation of variable horizontal viscosity
1587        in calc_gw.F, version 1.27, 2006/06/20):
1588        horizontal bi-harmonic viscosity in gW was missing when wiscA4W=0
1589        even if variable bi-harmonic viscosity (e.g., viscA4Grid) was non-zero.
1590      - change background horiz viscosity in vertical momentum (gW) to always be
1591        viscAhW,viscA4W (instead of switching to viscAhD, viscA4D when using
1592        any type of variable viscosity, e.g., viscAh/4Grid)
1593      - change default value of viscAhW,viscA4W to viscAhD,viscA4D (instead of
1594        viscAh,viscA4) which default to viscAh,viscA4 :  this avoid missing
1595        horiz. viscosity in W eq when just setting viscAhD/Z,viscA4D/Z (since
1596        default viscAh,viscA4 is zero).
1597    o model/src:
1598      - extend length of drC & recip_drC from Nr to Nr+1.
1599  o Divided Adjoint (DIVA) with MPI:  o Divided Adjoint (DIVA) with MPI:
1600    - 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.
1601    - 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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