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revision 1.2107 by jmc, Wed Dec 17 17:58:39 2014 UTC revision 1.2196 by jmc, Thu Nov 5 00:25:21 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 eesupp/inc:
8      - change the MPI-global-sum default (in CPP_EEOPTIONS.h) to:
9        #define GLOBAL_SUM_ORDER_TILES (only affects MPI built of global_sum_tile.F)
10        to always cumulate tile local-sum in the same order (still uses
11        MPI_Allreduce like standard code).
12      - in verification experiment code, remove local CPP_EEOPTIONS.h_mpi files
13        that are now identical to standard version (in eesupp/inc).
14    o pkg/shelfice:
15      - add SHELFICETransCoeffTFile for initializing spatially varying
16        heat and salt transfer coefficients
17    o pkg/atm_compon_interf & ocn_compon_interf:
18      - combine into 1 (new) S/R CPL_EXPORT_IMPORT_DATA the two previous
19        S/R CPL_EXPORT_MY_DATA & CPL_IMPORT_EXTERNAL_DATA
20      - move bi,bj loops inside S/R OCN_STORE_MY_DATA
21    o pkg/atm_ocn_coupler:
22      - initialise to zero ATMVARS.h & OCNVARS.h arrays.
23    o pkg/rbcs:
24      - select RBCS-mask for Temp & Salt the same way as for pTracer ; this allows
25        to compile with maskLEN=1 when all tracers use the same RBCS-mask.
26      - add a short report (to STDOUT) about RBCS-mask settings.
27    
28    checkpoint65p (2015/10/23)
29    o pkg/seaice/seaice_evp.F: fix store directives and key computations, since
30        there is no adjoint test for EVP, we don't know what it does to the adjoint
31        solution, but at least there are no more recomputation warnings left
32    o pkg/seaice/seaice_evp.F: slight modification of averaging so that EVP stands
33        a chance of giving the same results as a fully converged VP (JFNK) solver
34    o tools/adjoint_options/adjoint_diva:
35      - fix bug (typo) in Tang-Linear FLAGS setting for MPI + DIVA
36    o pkg/streamice:
37      - spotted bug in streamice_driving_stress using dyG where should have been dxG
38    o pkg/exf:
39      - remove STOP statement that prevented to use wind or (wind-)stress
40        interpolation for constant-in-time forcing fields (wind/stress period = 0).
41    o pkg/seaice:
42      - replace SEAICE_EVP_USE_ADAPTATION by run time parameters, requires
43        5 additionals 2D fields and 6 new store directives
44      - change logic in seaice_readparms.F: EVP code can now be turned on in
45        various ways, setting SEAICE_deltaTev is no longer required,
46        alternatively set SEAICE_evpAlpha/Beta, SEAICEuseEVPstar, SEAICEuseEVPrev,
47        or SEAICEaEVPcoeff
48    o pkg/shelfice/shelfice_thermodynamics.F
49      - redefining uLoc/vLoc to u/v, instead of 2u/v
50    o pkg/seaice/seaice_evp.F: introduce "adaptive EVP" by Madlen Kimmritz
51      - this is an intermediate state of a truely converging EVP that has
52        the potential of outperforming implicit VP methods, I do not recommend
53        using it yet.
54      - for now, "adaptive EVP" is turned on by setting SEAICE_EVP_USE_ADAPTATION
55        and all parameters are hardwired
56      - for convergence it still requires very smooth regularisations, that means,
57        if SEAICE_DELTA_SMOOTHREG is defined, deltaCreg=deltaC+deltaMin, which is
58        different from the VP case with deltaCreg=sqrt(deltaC**2+deltaMin**2); also
59        specific averaging appears to be required, still subject to tuning
60      - still needs cleaning and I need to turn parameter into runtime parameters
61      - add code to compute and print residuals of iteration, compile with
62        defining ALLOW_SEAICE_EVP_RESIDUAL to enable it
63    o pkg/seaice/seaice_evp.F: fix a bug (factor of four in front of e12Csq)
64      that entered with r1.54 on Sep04, 2015, -> update results
65    
66    checkpoint65o (2015/09/14)
67    o pkg/mom_vecinv & mom_common:
68      - add deep-atmosphere geometry factor in mom_calc_visc.F + in routines
69        called from there.
70      - add anelastic and deep-atmosphere geometry factor in pkg/mom_vecinv ; this
71        allows to use Vector-Invariant form in deep atmos and anelastic formulation
72    o pkg/seaice: introduce fast ice parameterisation following Itkin et al. (2015)
73      and Koenig-Beatty+Holland (2012)
74      - two new parameters SEAICE_tensilFac and SEAICE_tensilDepth
75      - global 2D field tensileStrength, computed in seaice_calc_ice_strength
76      - requires an extra input argument for S/R seaice_calc_viscosities
77      - tensileStrength's depth dependence is different from Itkin et al. (2015)
78        (to be changed and played with, for now exponential)
79    o pkg/seaice: introduce new parameter SEAICEscaleSurfStress (default = .FALSE.)
80      - if TRUE scale ice-ocean and ice-atmosphere stress acting on sea ice
81        by AREA according to Connelly et al. (2004), JPO.
82      - For EVP and the LSR solver, the implicit part of the drag term is
83        the only non-zero term in the denominator when there is no ice (which
84        prevented running the model with zero ice-ocean drag). If
85        SEAICEscaleSurfStress = .TRUE., this results in a division by zero
86        (or zero main diagonals BU/BV) which need to be caught. A practical
87        consequence is that for open water, the momentum equation reduce
88        to trivially 0 = 0 + 0 (for EVP). For LSR, BU/BV are reset to 1, if
89        they happen to be zero, often leading to a non-zero solution over
90        open water.
91    o pkg/seaice: revise EVP code (seaice_evp.F) in preparation for a more
92        efficient EVP method.
93      - introduce area-weighted averages for e12 (analogously to
94        seaice_calc_viscosities.F); this totally changes lab_sea.hb87 (2 digits
95        remain, but also changing the order of terms in the previous average
96        changed the results as much) -> update experiment
97      - add SEAICE_DELTA_SMOOTHREG code
98      - disentangle computation of zetaC/deltaC and zetaZ/deltaZ, also for
99        TEM-code
100      - adjust loop bounds so that only required fields are computed
101      - add new averaging code for zetaZ/deltaZ (again similar to
102        seaice_calc_viscosities.F), inactive by default for now (will change
103        results again), but will replace old code eventually
104    o eesupp/src:
105      - add an other alternative for multi-proc GLOBAL_SUM (in global_sum_tile.F)
106        to always cumulate tile local-sum in the same order
107        (option #define GLOBAL_SUM_ORDER_TILES in CPP_EEOPTIONS.h).
108        Still uses MPI_Allreduce (like standard code) but on array of tiles
109        and should be faster than GLOBAL_SUM_SEND_RECV code.
110      - switch almost all verification experiments that use GLOBAL_SUM_SEND_RECV
111        (defined in CPP_EEOPTIONS.h_mpi) to GLOBAL_SUM_ORDER_TILES instead.
112      - add CPP_EEOPTIONS.h_mpi with GLOBAL_SUM_ORDER_TILES defined in 14 more exp.:
113         aim.5l_cs, cheapAML_box, deep_anelastic, dome, fizhi-cs-32x32x40,
114         fizhi-cs-aqualev20, fizhi-gridalt-hs, global_ocean_ebm, matrix_example,
115         natl_box, solid-body.cs-32x32x1, tutorial_advection_in_gyre,
116         tutorial_baroclinic_gyre and tutorial_held_suarez_cs.
117    
118    checkpoint65n (2015/07/29)
119    o pkg/thsice:
120      - add a warning when used with pkg/aim but without updating SST
121        (stepFwd_oceMxL=F & useCoupler=F & tauRelax_MxL<>-1 ).
122    o pkg/offline:
123      - change where Offline-Fields are loaded, from load_fields_driver.F to
124        directly within FORWARD_STEP, just after updating iter number and time;
125      - move setting of GM and KPP diffusivity out of OFFLINE_FIELDS_LOAD into new
126        S/R OFFLINE_GET_DIFFUS that is called towards the end of DO_OCEANIC_PHYS;
127       These changes allow:
128        a) to recover exactly on-line results using deltaToffline=deltaTClock,
129        tested (using offlineIter0= nIter0 -1 and offlineTimeOffset= -deltaT/2)
130        both with Lin & Non-Lin Free-Surf, both with staggerTimeStep & synchronous
131        time-step, both with GM & KPP files and with recomputing these fields;
132        b) no needs to switch on staggerTimeStep anymore;
133        c) simplify rescaling of offline horiz. velocity with Non-Lin Free-Surf.
134      - update output of experiment tutorial_dic_adjoffline (only 3 digits left).
135    o pkg/offline:
136      - change (rarely used) offset-iteration parameter to an offset time (in s):
137        can easily recover previous offset-iter effect by setting offset-time
138        (offlineTimeOffset) to offset-iter x deltaToffline;
139      - do not turn-off Temp & Salinity surface relaxation when using KPP (used
140        in KPP as part of surface buoyancy forcing) in offline run.
141      - fix ptracers KPP non-local term in the case where KPP is re-computed.
142    o OpenAD
143      - Adding preliminary ggl90 test to OpenAD verification.
144        Config. with ggl90 currently diverges after 64 time steps
145        so will need more work to become more stable
146      - Adding preliminary kpp test to OpenAD verification.
147        required small tweakes in kpp_routines.F
148      - Merge and update from Krishna Narayanan's contrib area:
149        * Add one variable for preliminary OpenAD DIVA
150        * Add replacement time-stepping for OpenAD DIVA
151        * genmake2 flag -diva (but only for OpenAD; preliminary)
152        * required modifs for OAD_support
153        successful preliminary test for tutorial_global_oce_biogeo/
154    o pkg/seaice:
155      - initialise deltaC in seaice_lsr, cosmetic changes in seaice_lsr
156      - add cpp-flag SEAICE_DELTA_SMOOTHREG for option of regularising
157        delta with a smooth function in s/r seaice_calc_viscosity
158        (no effect on EVP)
159      - rename local suffix "sqr" into "sq" for more consistent variable names
160    o pkg/seaice:
161        add new parameter SEAICE_deltaMin that is used ***only***
162        for regularizing Delta (and nothing else, like the parameter
163        which is also used for all sorts of things SEAICE_EPS).
164        Defaults to SEAICE_EPS for backward compatibility only.
165    o pkg/seaice: replace erroneously storing e12Csqr on the wrong tape with
166        the wrong key by inialising it before use -> fixes a recomputation
167        problem but does not fix the gradient
168    o pkg/layers:
169      - move resetting of flux arrays to outside the iLa loop
170        (this caused layers_diapycnal to not work with more than one layer coord.)
171      - fix bug in calculation of layers_recip_delta in layers_init_fixed.F
172    o pkg/layers:
173      - remove from common block 3D layers fields (used to diagnose transport
174        in tracer coords) and declare them as local arrays in layers_calc.F
175    o pkg/seaice:
176      - Rename SEAICE_VECTORIZE_LSR_ZEBRA to SEAICE_LSR_ZEBRA and define it
177        in lab_sea forward experiment (changes results -> updated)
178      - update adjoint experiment lab_sea after cleaning up seaice_lsr_tridiagu/v
179    o pkg/seaice: modify seaice_lsr.F in order to improve the gradient
180       computations; for SEAICE_VECTORIZE_LSR
181      - move the loops over which the tridiagonal solvers (seaice_lsr_tridiagu/v)
182        sweep to the outside,
183      - remove store directives and add "CADJ loop sequential" directives
184        in analogy to model/src/solve_tridiagonal.F
185      - replace many "#ifdef SEAICE_VECTORIZE_LSR_ZEBRA" by variable loop
186        boundaries to yield more readable code. This has also the charming side
187        effect that your can use SEAICE_VECTORIZE_LSR_ZEBRA without
188        SEAICE_VECTORIZE_LSR (i.e. adjoint without recomputations in
189        seaice_lsr_tridiagu/v now requires either of these flags, vectorization
190        still requires SEAICE_VECTORIZE_LSR with SEAICE_VECTORIZE_LSR_ZEBRA as
191        an additional option)
192       The tridiagonal solvers are now completely analoguous to solve_tridiagonal.F
193       but the adjoint gradients (which are affected by this change) still explode.
194    o coupler (atm & ocn _compon_interf):
195      - avoid using Exch2 IO mapping if not suitable.
196    
197    checkpoint65m (2015/06/15)
198    o pkg/layers:
199      - clean-up old parameters setting (from Sep 2012):
200        + remove old parameters setting from common block (declared locally);
201        + stop if any old parameter is mixed with new parameters;
202        + check for valid or consistent parameter setting (e.g., layers_name)
203      - check that layers_bounds for Pot.Density are in the right range;
204        this is supposed to catch un-updated setting after recently shifting
205        potential density field "prho" by -1000 (now in "sigma" scale).
206    o pkg/layers:
207      - Added missing call to layers_fill for keeping track of tottend in
208        pkg/diagnostics/diagnostics_fill_state.F
209    o pkg/layers:
210      - added CPP flux LAYERS_FINEGRID_DIAPYCNAL to disable fine-grid binning
211        of diapycnal fluxes
212    o pkg/layers:
213      - reverted changes to interpolation to previous treatment; there
214        was never actually a problem
215    o pkg/layers:
216      - fix interpolation of layers tracers in the presence of partial cells
217      - add lots of new functionality to compute water mass transformation
218        (enabled by CPP flag LAYERS_THERMODYNAMICS)
219      - add new calls from main code (diags_oceanic_surf_flux.F,
220        thermodynamics.F, impldiff.F) and gad to save the necessary fields
221        for layers_thermodynamics calculations
222    o pkg/ptracers:
223      - add capability of stepping a passive tracer forward without advection
224        by setting PTRACERS_advScheme to 0.
225    o pkg/diagnostics:
226      - add few (threads) _BARRIER around any update of "diag_pkgStatus".
227    o pkg/layers:
228      - shift potential density field "prho" by -1000 for density layer averaging so
229        that it corresponds to usual "sigma" definition (i.e., rho(p=const)-1000);
230        Note that density bin boundaries (layers_bounds in data.layers) have
231        to be set accordingly (i.e., shifted, in sigma scale).
232    o pkg/layers:
233      - fix snap-shot output of layer thickness @ V.pt and output of pot.density
234      - fix calculation of layer non-weighted velocity and layer probability
235      - add diagnostics for pot.density used for layer averaging
236    o pkg/seaice:
237      - seaice_calc_viscosity.F: change computation of deltaC**2 to ensure
238        positiveness, modify a few comments and improve variable names,
239      - the changed computation of deltaC affects most seaice-related
240        experiments at the truncation level.
241        seaice_itd.thermo is affected by far the most, with
242        only 7 digits of agreement remaining; update experiments.
243    
244    checkpoint65l (2015/05/04)
245    o pkg/shelfice:
246      - in shelfice_thermodynamics.F, if SHELFICEBoundaryLayer=.true., then set
247        factor drKp1 to zero where it is negative (ie. do not use
248        SHELFICEBoundaryLayer if hFacC>1)
249      - the same for factor drLoc in shelfice_forcing.F
250    o tools/genmake2: move FEXTRAFLAGS from FFLAGS to FOPTIM to avoid a problem
251        with modules in ptracers, when using testreport option "-small_f"
252    o pkg/seaice/seaice_growth.F (in case of SEAICE_ITD)
253      - replace tmpscal1**1.36 by faster exp(1.36*log(tmpscal1))
254    o verification/testreport
255      - add new option -small_f
256        with this option testreport first makes the target small_f (*.f files)
257        before running make (all). This is useful for explicit inlining when
258        all sources need to be full available.
259    o pkg/exf/exf_interp.F:
260        remove previous changes related to reverse (decreasing) input grids latitude
261    
262    checkpoint65k (2015/04/01)
263    o pkg/ecco:
264        fix missing cosphi initialization; use eccoiter in place of optimcycle;
265        if autodiff is not compiled then use READ_REC_XY_RL/READ_REC_XYZ_RL
266        instead of active read/write
267    o pkg/ctrl:
268        if autodiff is not compiled then use READ_REC_XY_RL/READ_REC_XYZ_RL
269        instead of active read/write.
270    o pkg/autodiff: make autodiff_readparms.F and autodiff_whtapeio_sync.F
271        return if .NOT.useAUTODIFF
272    o pkg/seaice: add CPP brackets (cost function related).
273    o model/src:
274        add useAUTODIFF run time switch.
275    o pkg/exf/exf_interp.F:
276        add code to allow input grids with latitude starting in the north (i.e. when
277        j=1 corresponds to northern edge of field); modify global_with_exf to test
278        this feature.
279    o verification/testreport:
280      - replace "grep -A3" with POSIX conformal sed command, because there are
281        implementations of grep that cannot do contextual searches
282      - replace "cat -n" by "nl" (two occurrences), because not all implementations
283        of "cat" have the option "-n"
284    o model/src:
285        add new file gsw_teos10.F that contains 3 functions, more or less a copy
286        of the gsw_toolbox.f90 of the TEOS-10 fortran interface, that are used to
287        convert from conservative to potential temperature. For now they are not
288        called anywhere.
289    o pkg/ggl90: make "useIDEMIX" useful
290      - re-organize code in s/r ggl90_calc a little to move computations that
291        are different for idemix into separate loops (changes verification
292        experiment idemix at truncation level, 12 digits remain -> updated)
293      - requires 2 new 2D fields KappaM, verticalShear
294      - make hFacI and recip_hFacI local 3D variables that are passed to
295        s/r ggl90_idemix
296      - fix and improve some comments
297    
298    checkpoint65j (2015/02/25)
299    o pkg/openad
300      - synchronize seawater.F with version in model/src: replace routine
301        body of sw_temp by calling sw_ptmp and fix/add a few comments.
302    o pkg/mnc:
303      - change default value of pickup_read/write_mnc params to FALSE
304        (since few features are missing in reading MNC pickup files).
305    o model/src:
306      - change default (background) vertical diffusivity for salt to be the
307        temperature (background) vertical diffusivity.
308      - change background vertical diffusivity in vertical mixing pkgs ggl90,
309        kl10, my82 and pp81 from temperature diffusivity to salinity diffusivity.
310        This makes ptracers default diffusivity (that uses salt diffKr) more
311        consistent with vertical mixing schemes.
312    o verification/testreport:
313      - fix typo in "-pcls" option ;
314      - put temp files in /tmp (instead of in local dir)
315      - add option "-ncad" to use genmake2 new option "-nocat4ad"
316      - allow to use "-j" option (for multi-procs make) for AD, OAD and TLM.
317    o pkg/ggl90 (idemix code):
318      - apply few fixes ; add some missing "_d 0" ; update output of exp.
319        global_ocean.90x40x15.idemix
320    o OpenAD
321      - enable active file I/O and begin removal of work-around code
322        for OpenAD for handling control variables (memory vs. active files)
323      - new CPP options file OPENAD_OPTIONS.h
324      - revert to genarr2d gradient check for hs94.1x64x5
325      - (genarr3d tested by tutorial_global_oce_biogeo, tutorial_tracer_adjsens)
326      - gentim2d works for halfpipe_streamice but not yet hs94.1x64x5
327    o tools/genmake2:
328      - add option for an alternative Makefile (from Martin) where multiple
329        source files are sent to TAF (instead of all in one file).
330    o pkg/ggl90: add IDEMIX (Olbers and Eden, 2013)
331      - code provided by Carsten Eden as an extension of ggl90
332      - so far the code is turned on within ggl90 by setting a CPP-flag at
333        compile time; a runtime flag implementation is not yet complete
334      - tested in new verification experiment global_ocean.90x40x15.idemix
335    o verification:
336      - reduce length of the AD test run by half for experiments
337        global_ocean.cs32x15 (std + thsice) and isomip
338      - enable active file I/O for OpenAD, adjust verifications accordingly
339      - halfpipe_streamice: change gradient check from genarr2d to gentim2d
340    o verification/testreport:
341      - fix two non-POSIX sed statements so that there are no error messages
342        on Mac OS X
343      - replace hostname -s with hostname | sed 's/\..*$//'
344    o model/src/seawater.F:
345      - simplify SW_TEMP to just calling SW_PTMP with P and PR exchanged
346        (following the matlab code), which would have avoided the bug caught
347        by Matt (see below) in the first place
348    o pkg/shelfice:
349      - implement alternative discretisation of quadratic drag (selectBotDragQuadr)
350        and true distance in no-slip BC (bottomVisc_pCell) similar to bottom-drag.
351      - fix sign of friction tendency (no-slip BC) and fix u,v drag for thin
352        ice-shelf case (i.e., within surface level).
353      - add config summary in shelfice_check.F
354      - remove global variable recip_SHELFICElatentHeat and replace by a local
355        variable recip_latentHeat
356      - introduce diagnostics for friction velocity uStar (in case of
357        SHELFICEuseGammaFrict)
358      - change verification experiment isomip.htd:
359        + start from pickup (as input_ad at nIter0=8640)
360        + start from SHELFICEmassFile instead of SHELFICEloadAnomaly file
361        + test SHELFICEuseGammaFrict = .TRUE.
362        + test SHELFICEadvDiffHeatFlux = .TRUE.
363    o model/src:
364      - fix bug (Thanks to Matt) in function SW_TEMP (to convert Pot.Temp to
365        in-situ Temp) and in routine SW_TEMP (in pkg/openad);
366        update output of experiments global_with_exf.yearly and isomip (all 6).
367    o pkg/shelfice:
368      - change setting of kTopC to also be zero where there is no ice-shelf.
369      - zero out surface forcing arrays (for now, for T & S + EmPmR) where
370        ice-shelf is.
371      - first attempt to get RealFreshWaterFlux effects: for now, only without
372        SHELFICEboundaryLayer ; not consistent if using synchronous time-stepping.
373    o pkg/seaice: add the option to prescribe a fixed thickness PDF
374      for thermodynamic calculations
375      - because of divisions of the type 7/7 not exactly equal to 1, this change
376        affects results of some verification experiments by up to 4 digits:
377        global_ocean.cs32x15.seaice, lab_sea, lab_sea.fd, lab_sea.salt_plume,
378        seaice_obcs, seaice_obcs.seaiceSponge, seaice_obcs.tides
379        adjoint: lab_sea, lab_sea.noseaicedyn
380        -> updated
381    
382    checkpoint65i (2015/01/23)
383    o model/src:
384      - change units of frictionHeating field from W to W/m^2
385      - fix bug in frictional heating from stratospheric drag in
386        S/R ATM_PHYS_TENDENCY_APPLY_V
387      - with synchronous time-stepping: move resetting to zero of frictionHeating
388        field from load_fields_driver.F to thermodynamics.F ;
389      - add diagnostics for frictional heating.
390    o model/src & gmredi K3D:
391      - add frictionHeating field to pickup-files (for synchronous time-stepping)
392      - move ALLOW_EDDYPSI block out of DYNVARS.h and merge it into FFIELDS.h
393      - rename uMean,vMean --> uEulerMean,vEulerMean (+ change diagnostics name
394        and name in pickup file).
395      - fix arguments of few DIAGNOSTICS_FILL calls in gmredi_k3d.F
396    o model/src:
397      - move (from ini_forcing.F) initialisation of all arrays in header file
398        FFIELDS.h into new S/R ini_ffields.F ; this fix broken restart
399        (since Nov 2012) with option selectAddFluid=1.
400    o pkg/shelfice:
401      - change units (+ document) of newly added field "shelfIceMassDynTendency"
402      - upgrade from _RS to _RL shelficeMass & shelficeLoadAnomaly arrays.
403    o pkg/obcs: re-organize obcs_calc_stevens.F to prepare for passive tracers
404    o pkg/seaice: two new runtime parameters:
405      - SEAICE_cStar replaces the hard wired "20" in the strength formulation,
406        long overdue
407      - SEAICE_tensilFac: preparation for Koenig-Beatty+Holland (2012)
408        parameterization of tensil stress for fast ice (does not do anything yet)
409    o pkg/seaice/seaice_check.F: left over from restricted addtive Schwarz method
410        for LSR: move checking overlaps out of JFNK-if-block
411    o pkg/atm_phys:
412      - move copy of grid and dynamical fields out of atm_phys_driver.F into
413        new S/R ATM_PHYS_DYN2PHYS.
414      - fix level height for Linear Free-Surf case (to be consistent with
415        fixed-in-time pressure levels).
416    o pkg/mom_common (bottomdrag):
417      - average bottomDragFld (ALLOW_BOTTOMDRAG_CONTROL) from grid-cell center
418        to correct location (U & V point) in S/R MOM_U/V_BOTTOMDRAG;
419        update output (adm & tlm) of experiment global_ocean.90x40x15.bottomdrag.
420    o pkg/shelfice (u/v_drag):
421      - add one argument (the other velocity component) to S/R SHELFICE_U/V_DRAG;
422      - use SHELFICEDragLinear & SHELFICEDragQuadratic in shelfice_v_drag.F
423        (now similar to shelfice_u_drag.F)
424      - remove condition on bottomDragTerms when calling SHELFICE_U/V_DRAG
425        from mom_vecinv.F (similar to mom_fluxform calls).
426    o pkg/mom_common (bottomdrag):
427      - add one argument (the other velocity component) to S/R MOM_U/V_BOTTOMDRAG;
428      - add options for alternative discretisation of velocity norm in quadratic
429        bottom drag: averaging of grid-cell-center KE to U.point and V.point
430        (selectBotDragQuadr=0, original code) can produce noisy patterns; this
431        improves when averaging only the other component (e.g. vVel for U bottom
432        drag) using wet-point method (selectBotDragQuadr=2) or not (=1).
433      - add options (bottomVisc_pCell) to account for partial-cell in bottom
434        friction (no-slip BC) thus getting the true distance from the bottom;
435        off by default since this also reduces model stability (explicit bottom
436        friction). Changes produce different machine truncation with linear-drag
437        + no-slip BC: update output of experiments exp4.stevens (10 digits) and
438        front_relax (bvp & mxl, 10 & 11 digits).
439    o model/src & mom pkgs:
440      - add one more level to vertical viscosity local arrays (Nr+1, previously Nr)
441        since no-slip bottom BC uses viscosity @ k+1 to update velocity @ level k
442      - for now and until vertical mixing scheme are updated to fill up level Nr+1,
443        just copy level Nr value to level Nr+1.
444    o doc:
445      - add notes form Abhisek Chakraborty on how to close Heat & Salt budgets.
446    o pkg/streamice:
447      - shelfice_init_varia.F, shelfice_init_fixed.F, shelfice_readparms.F,
448        SHELFICE.h: move array shelficemass to init_varia, initialise
449        from array shelficemassinit, which is set in init_fixed and
450        has option to be set from file; introduce array
451        shelficeMassDynTend array, set thru file in init_fixed
452      - NEW FILE: shelfice_step_icemass.F: update shelficemass from either
453        shelfIceFreshWaterFlux and shelficeMassDynTend or H_streamice in
454        pkg/streamice
455      - shelfice_thermodynamics.F: call shelfice_step_icemass if
456        SHELFICEMassStepping = .true.
457      - shelfice_ad_diff.list: add new subroutine shelfice_step_icemass.f
458    
459  checkpoint65h (2014/12/17)  checkpoint65h (2014/12/17)
460  o verification/global_ocean.90x40x15, global_ocean_ebm:  o verification/global_ocean.90x40x15, global_ocean_ebm:
461    - update to generic controls.    - update to generic controls.

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