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revision 1.769 by dimitri, Wed Feb 7 17:38:11 2007 UTC revision 1.1049 by jmc, Sun Jan 4 01:25:32 2009 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/flt:
8     - do some cleaning and fix the restart ;
9     - add output.txt in flt_example/results to get this pkg tested.
10    o genmake2: add an EXTENDED_SRC option and flag.
11       for now, cannot be turned on on command line (only through genmake_local)
12    o pkg/mdsio: read/write vector:
13     - singleCpuIO: fix RL/RS in MDSWRITEVECTOR by calling new S/R MDS_BUFFERtoRL/RS
14     - singleCpuIO=F: fix arrType & filePrec & _BYTESWAPIO in both MDSREADVECTOR
15       & MDSWRITEVECTOR by calling new S/R MDS_RD/WR_VEC_RL/RS.
16     - affects gradient of test-exp "bottom_ctrl_5x5" (not due to _BYTESWAPIO)
17      (drop to 4 digits matching for grad). But this test does not look very
18      reliable (was already failling on eddy, fc5, at 6.digits). Update output.
19    
20    checkpoint61g
21    o pkg/flt:
22      - move FLT_CPPOPTIONS.h to FLT_OPTIONS.h (standard name)
23       + make OPTIONS file more standard.
24      - rename S/R MDSREADVECTOR_FLT to FLT_MDSREADVECTOR (to mach src file name)
25      - fix _BYTESWAPIO CPP-Flag
26      - standard reading of file-parameter "data.flt"
27      - fix argument list of S/R FLT_RESTART
28      still need to fix _BYTESWAPIO in pkg/mdsio/mdsio_writevector.F
29    o pkg/obcs: fix a CPP-flag, bug reported by Jeff Blundell
30    o gather_2d.F/scatter_2d.F: suppress vectorisation on NEC SX in respond to
31      a still unfixed compiler/optimization bug
32    
33    checkpoint61f
34    o pkg/seaice, LSR solver: fix bug in GLOBAL_MAX calls ;
35      update results of global_ocean.cs32x15.icedyn test.
36    o move getcon.F from model/src to pkg/fizhi.
37    o pkg/exf: add parameter for extrapolation of temp up to the surface
38       and option to prevent negative evap (in bulk_largeyeager04 only).
39    o Prather Advection scheme: fix tracer conservation for divergent flow
40      (e.g., when using NonLin Free-Surface).
41    o kpp: retire KPPmld diagnostics --> use MXLDEPTH instead
42    o gmredi (Visbeck-variable-K):
43     - add more parameters to Visbeck-variable-K.
44     - use a 5 points average for dSigmaR in Visbeck-K calculation
45       (more "homogenous": same stencil and same weights as in dSigmaH)
46     - update output of ideal_2D_oce experiment.
47    o fix CPP-flag REAL4_IS_SLOW, when _RS expands into real*4
48      (#undef REAL4_IS_SLOW)
49     - pkg/mnc/mnc_cw_cvars.F: write _RS-grid variable as netcdf-real*4
50       coordinate variable
51     - pkg/monitor/monitor.F: call mon_printstats_rs for _RS variables
52       (surface forcing fields), removes some of the functionality
53     - model/src/write_grid.F: write _RS variables as RS-netcdf variables
54     - model/src/diags_oceanic_surf_flux.F: fix a few diagnostics, but
55       probably not all: copy _RS surface flux fields to RL field before
56       calling DIAGNOSTICS_FILL
57     - model/inc/CPP_EEMACROS.h: make the _EXCH_*_RS macros expand into
58       real*4 (CALL EXCH_*_RS) versions.
59     - tested in 2 experiments: inverted_barometer & solid-body.cs-32x32x1
60       (generate new output).
61    
62    checkpoint61e
63    o gmredi (Visbeck-variable-K):
64      - fix the "OLD_VISBECK_CALC" option + move the #undef to GMREDI_OPTIONS.h
65      - change computation of Visbeck-K where Slope > Smax :        
66        now: N*min(Slope,Smax) (similar to OLD_VISBECK_CALC with gkw91 taperFct)
67        previously was: M*sqrt(min(Slope,Smax)) ; update ideal_2D_oce output.
68    o bottom-drag in P-coord.: change units of bottomDragLinear & bottomDragQuadratic
69      to be the same as with Z-coord. (i.e., m/s & no-units respectively).
70    o calc_viscosity: fix index range (was wrong for CD-Scheme & explicit Visc)
71    o pkg gmredi, linear & fm07 tapering: put an upper limit on Slope^2 so that Kwz
72      does not become too large (to avoid precision problems in implicit-diffusion
73      solver); update ideal_2D_oce output.
74    o pkg ggl90:
75      - in ggl90_cal.F: compute only one set of visc/diff, used to
76        step forward TKE/T/S/momentum
77      - default value of GGL90viscMax/GGL90diffMax larger and equal (to
78        have Prandlt =1)
79    o gmredi (fm07):
80      - add lower limit on Transition layer thickness + lower limit on 1/lambda
81      - allow to set few more params from data.gmredi
82    o pkg ggl90:
83          - add missing sqrt(2) factor in computation of mixing length
84            scale in ggl90_calc.F
85            (see Eq. (2.35) in Blanke and Delecluse, JPO, 1993)
86    
87    checkpoint61d
88    o adjoint modifs
89      - adapt to new field rhoInSitu
90      - allow to revert from StoreDynVars2D, StoreDynVars3D
91        to individual fields
92        (switches AUTODIFF_USE_OLDSTORE_2D, AUTODIFF_USE_OLDSTORE_3D)
93    o store 3-D (in-situ) density in commom block (DYNVARS.h)
94     - save 1 rho computation.
95     - no longer modify T & S inland when using down_slope pkg.
96    o gad_som : allow to switch to SOM advection for T & S without corresponding
97      pickup files (using new S/R: MDS_CHECK4FILE).
98    o keep removing _BEGIN/_END_MASTER between MDSIO S/R call
99      (for useSingleCpuIO to work in multi-threaded)
100    o pkg/shelfice:
101     - disentangle parameters: retire shelfIceFile in data/PARM05 and substitute
102       with SHELFICEtopoFile in data.shelfice
103     - move code for reading ice shelf topography and modifying hFacC into separate
104       subroutines of the shelfice package
105     - separate initialisation of "fixed" and "variable" variables
106     - kTopC is not (yet) replaced by kSurfC, although this is possible
107    o fix broken diagnostic SIatmFW and changed the units from m/s to kg/m^2/s
108    o add initialisation of deepFac if using Pcoords (new S/R set_grid_factors)
109      and rename:
110      ini_phiref.F          --> set_ref_state.F  (+ set anelastic factors)
111      ini_reference_state.F --> load_ref_files.F (- set anelastic factors)
112    o change FIND_RHO_SCALAR : return rho (instead of rho - rhoConst)
113    
114    checkpoint61c
115    o add option ALLOW_ADDFLUID and run-time selector "selectAddFluid"
116      to add mass source/sink of fluid in the interior (3-D generalisation
117      of oceanic real-fresh water flux).
118    o pkg/monitor: fix recip_dr argument in mon_advcflw2 call (-> advcfl_W_hf_max)
119    o vermix test experiment: switch from LINEAR EOS to MDJWF (not tested before)
120    o new pkg: down_slope
121      density-driven downsloping flow parameterisation (Tellus, 1999, 412-430).
122      - presently, modify T & S inland (dwnslp_calc_rho.F).
123        can be avoided if rho was stored in common bloc and used in calc_phi_hyd.
124      - implementation for ocean in P-coords not tested.
125      - add secondary test to global_ocean.90x40x15 (input.dwnslp) to check this pkg.
126    o move kSurfC,kSurfW & kSurfS from SURFACE.h to GRID.h (next to kLowC)
127      (to facilitate conversion of oceanic pkg to p-coordinate).
128    o change FIND_RHO to FIND_RHO_2D :
129      pass arguments tFld & sFld as local (tile) 2D-arrays ; +fix EOS_CHECK.
130    o new pkg: cheapaml
131    
132    checkpoint61b
133    o exch2:
134      change index bounds in rx2_cube exchanges (new S/R: EXCH2_GET_UV_BOUNDS)
135      - no longer depend on the order sequence (N,S,E,W).
136      - 3rd exchange no longer needed (tested with 24 tiles).
137      - same modif to hand-written adjoint S/R (global_ocean.cs32x15: zero diff)
138      - exch_UV_A-grid readily available (but not yet tested).
139      comment out 3rd exch call and remove copy of V to U at SE & NE face-corners
140      (both are no longer needed) in exch_uv: no effect in forward run; but
141       get truncation error differences with adjoint exch.
142    o exch2:
143     - change index-bounds storage (moved from target to local tile,
144       more intuitive this way) ; rename/remove some variables.
145     - change utils/exch2/matlab-topology-generator & code_mods accordingly.
146    
147    checkpoint61a
148    o exch2/matlab-topology-generator:
149      fix bug in index bounds for N-S internal exchange (hard to tell if this
150      had any effect on the solution).
151    o pkg/mnc: small fix in mnc_handle_err: make sure that length of msgbuf
152      is exceeded
153    o testreport: modify syntax of awk, so that it works also with
154      awk, and not only with nawk and gawk
155    
156    checkpoint61
157    o autodiff
158      Change default for TAF usage by removing argument '-nonew_arg'
159      This changes TAF subroutine argument list (ordering of active var.)
160      Omission of this flag leads to incompatibility w.r.t. TAMC
161      To restore TAMC-compatibility, need following modifs:
162      * use adoptfile tools/adjoint_options/adjoint_tamc_compatibility
163      * use CPP option #define AUTODIFF_TAMC_COMPATIBILITY
164      Tested TAF version is 1.9.22
165      N.B.: exch2 hand-written adjoint code currently not TAMC compatible
166    
167    checkpoint60
168    --->>> This is the last checkpoint for which generating the adjoint
169    --->>> is done via the TAMC-compatibility TAF-flag "-nonewarg"
170    --->>> by default.
171    --->>> Future checkpoints will ommit this flag by default.
172    o pkg/generic_advdiff, os7mp: simplify and avoid division by zero.
173    o pkg/grdchk: Add gradient check to etan0 perturbations.
174    o pkg/exf: read ice area from file (#ifdef ALLOW_ICE_AREAMASK).
175    o pkg/autodiff: more flexibility in zeroadj.
176      model/src: modifying do_oceanic_phys.F accordingly.
177    o pkg/ctrl: Bounds for (kapgm,kapredi,eddypsi) parameter estimation.
178    o model/src and pkg/gmredi: GMREDI_WITH_STABLE_ADJOINT CPP option
179      special setup of gmredi for which the adjoint is stable
180      enough for parameter optimization.
181    o bridging the gap between eddy stress and GM.
182      -> eddyTau is replaced with eddyPsi (eddyTau = f x rho0 x eddyPsi)
183          along with a change in CPP option (now ALLOW_EDDYPSI).
184      -> when using GM w/ GM_AdvForm:
185          The total eddy streamfunction (Psi = eddyPsi + K x Slope)
186          is applied either in the tracer Eq. or in momentum Eq.
187          depending on data.gmredi (intro. GM_InMomAsStress).
188      -> ALLOW_EDDYPSI_CONTROL for estimation purpose.
189      The key modifications are in model/src/taueddy_external_forcing.F
190      pkg/gmredi/gmredi_calc_*F pkg/gmredi/gmredi_*transport.F
191    
192    checkpoint59r
193    o new S/R (pkg/mdsio/mdsio_facef_read.F) reading of sNx+1 x sNy+1 array
194      from per-face file (take S/R READSYMTILE_RS out of ini_curvilinear_grid.F);
195      fix option to read coriolis(@ cell-corner) from files with CS-grid.
196    o pkg/mnc: add some attributes to standard 1D-coordinate variables
197    o pkg/diagnostics: enforce missing_value attribute for scalar variables at
198      mass points, when using mnc for output
199      - add runtime parameter (missing_value, missing_value_int) to override
200        default (which is the value of getcon('UNDEF'))
201    o pkg/mnc: prepare mnc for the actual use of missing values with the
202      diagnostics package: small fix in mnc_cw_readwrite.template and more
203      initialisation of never used fields
204      - replace mnc_common.h and mnc_id_header.h with corresponding upper case
205      versions
206    o pkg/thsice/thsice_ini_vars.F added default initial values so that
207      thermodynamics sea ice solver does not blow up when some initial fields
208      are missing.
209    o move from external_forcing_surf.F to ini_forcing.F
210      the p-coord. hack consisting in using pLoad to set phi0surf ;
211      update output of tutorial_global_oce_in_p (affected @ truncation level).
212    o Freshen up a bit hs94.1x64x5, notably:
213      remove rotationPeriod and tRef=5*0. (adjoint only), and add
214      exactConserv=.TRUE.
215    o pkg/generic_advdiff:
216      change option GAD_ALLOW_SOM_ADVECT to GAD_ALLOW_TS_SOM_ADV which only
217      applies to files where Temperature & Salinity 2nd Order moments are used.
218    o pkg/ptracers: add second-order moment advection schemes (80 and 81);
219      this uses a dynamically allocated internal state data structure
220      (#define PTRACERS_ALLOW_DYN_STATE in PTRACERS_OPTIONS.h)
221      and requires a fortran 90 compiler
222    
223    checkpoint59q
224    o pkg/mom_vecinv: Add energy & enstrophy conserving scheme (selectVortScheme=3)
225       (from Sadourny, described by Burridge & Haseler, ECMWF Rep.4, 1977)
226    o Refresh tutorial_global_oce_biogeo, notably:
227      - change bathymetry (put back seamounts in ACC, use hFacs)
228      - change EOS (POLY3 --> JMD95Z)
229      - use Bryan-Lewis vertical diffusivity
230      - use multidimensional advection
231      - remove old virtual virtual in dic pkg, now done through ptracer pkg
232      - change a couple of parameters in dic pkg
233    o pkg/ctrl: change formula in adctrl_bound.F and add a parameter to ctrl_map_ini_gen.F
234    o pkg/obcs: change default to OBCSfixTopo = .true.,
235      - set OBCSfixTopo=.false. in exp4/input/data.obcs to reproduce old result
236      - replace "debugMode" with "debugLevel .GE. debLevB"
237    o implementation of TAF directives for gchem,cfc,dic
238    o remove "exp5" (replaced by tutorial_deep_convection).
239    o pkg/obcs: add code to fix topography gradients normal to open boundaries;
240      this requires computing the index fields OB_Jn/Js/Ie/Iw in obcs_readparms;
241      the code can be turned on by setting OBCSfixTopo = .true. in data.obcs
242      --> changes results in exp4, seaice_obcs
243    o tutorial_deep_convection :
244      update the set-up and increase resolution and domain size ; start
245      from pseudo initial conditions = output at t=120mn in order to see
246      something happening when running testreport.
247    o pkg/seaice: add os7mp as an advection scheme
248                  add check for advection schemes
249                  add a flag for restoring T and S underneath sea ice
250    o pkg/my82: add netcdf-support and diagnostics
251    o thsice pkg:
252      - Now hsMax limits snow height by turning it into ice following
253        flooding scheme (and now conserving energy)
254      - Slight rewriting of the formula in thsice_calc_thick.F
255      - Parameter rhowi eliminated to be replaced by floodFac = (rhosw-rhoi)/rhos
256      --> changes results of global_ocean.cs32x15.icedyn and global_ocean.cs32x15.thsice
257    
258    checkpoint59p
259    o gchem / dic / cfc :
260      - add useDIC, useCFC , read from "data.gchem" (& hold in GCHEM.h);
261      - add new parameter files: "data.dic" & "data.cfc" ;
262      - various re-arrangement in initialisation & header file ;
263      - fix tutorial_global_oce_biogeo for multi-threaded test.
264    o pkg/dic: test for "pickup_dic" file when restarting ;
265      if no pickup-file, can restart with a re-initialised pH (same as it did
266      before) providing pickupStrictlyMatch is set to False.
267    o change argument list of S/R PTRACERS_WRITE_PICKUP & MYPACKAGE_WRITE_PICKUP
268      + fix call to S/R GGL90_WRITE_PICKUP & DIC_WRITE_PICKUP
269    o add a "warning" (to Error msg file) when an Active Tracer is not using AB-2
270      and staggerTimeStep is off (needed for stability of Internal-wave dynamics).
271    o move out of PARAMS.h & data the last pieces of old-ptracer code: tauTr1ClimRelax,
272     & lambdaTr1ClimRelax ; put those 2 params in PTRACERS_PARAMS.h & data.ptracers
273       (note: not clear to me what lambdaTr1ClimRelax is still used for ...)
274    o pkg/mom_vecinv: - new parameter "selectVortScheme" to select which
275       scheme to use for vorticty-term ;
276     - compute upwindVorticity=T case within mom_vi_u/v_coriolis_c4.F
277       (with default selectVortScheme, return to original discretisation)
278     - remove weird combination (e.g.: upwindVorticity & highOrderVorticity)
279    o pkg/seaice: add a line to the summary to indicate grid type (B/C)
280    o in mom_calc_visc, fix average value of viscAh_W & viscA4_W next to the
281      bottom ; only used with variable horizontal viscosity and non-hydrostatic.
282      also fix diagnostics VISCAHW & VISCA4W.
283    
284    checkpoint59o
285    o dome/code/obcs_calc.F: avoid division by zero (detected using gfortran).
286    o change the loop ordering in most gad_*_adv_x.F to improve vectorization:
287      move a few statemens out the main loop into separate loops
288    o pkg/shelfice:
289      - sort out freshwater flux; convert freshwater fluxes to mass fluxes
290        (kg/m^2/s), does not break tests, because in verification/isomip,
291        rhoConstFresh=rhoConst (by accident)
292      - rearrange computation of tLoc, sLoc, pLoc to make code more efficient
293      - move S/R find_rho_scalar, pkg/ecco/sw_ptmp.F, pkg/ecco/sw_adtg.F into
294        new file model/src/seawater.F, so that they are available for all pkgs.
295      - convert potential temperature into in-situ temperature. This changes the
296        isomip tests => update tests
297    o add a flag writePickupAtEnd (default=true) to be able to suppress
298      writing a pickup at the last timestep
299    o tools/mpack-1.6 :
300      - disable automake (not working) and autoconf (not needed).
301      - update to version 1.6.4 which fix MD5 code on some 64 bits platforms
302        also cleaner with much less compilation warnings.
303    o pkg/profiles:
304      rename profiles_interp_mean_genericgrid as profiles_interp_mean_gg
305      (for "less than 32 characters name" compiler requirement)
306    o pkg/obcs and pkg/exf: added capability to specify seaice open boundary
307      conditions that have a different sampling frequency than S/T/U/V obcs
308    o pkg/diagnostics (stats-diags):
309      - fix global Min/Max in case 1 processor get only empty tiles
310    o genmake2: replace (4 times)
311         make genmake_tc_1.o >> genmake_warnings 2>&1
312      with
313         COMM="$CC $CFLAGS -c genmake_tc_1.c"
314         echo $COMM >> genmake_warnings
315         $COMM >> genmake_warnings 2>&1
316      to make genmake2 always see the value of CC as specified in the optfile.
317    o generic_advdiff: - prather advection scheme (SOM) coded for CS-grid.
318      - add diagnostics for 1srt & 2nd Order moments and sub-grid variance.
319      - modify verification advect_cs test to test SOM-advection on CS-grid.
320    o pkg/ctrl:
321      - Rewrite of ctrl_map_ini_ecco.F,
322        introducing a generic routine (ctrl_map_ini_gen.F).
323      - Modification of ctrl_bound/adctrl_bound handling control vector bounds.
324    
325    checkpoint59n
326    o pkg/diagnostics: for large number of diagnostics, store diagnostic mate
327      number in dedicate array "hdiag":
328      - new version of S/R DIAGNOSTICS_ADD2LIST : DIAGNOSTICS_ADDTOLIST
329        with 1 more argument (mate number); modify old version DIAGNOSTICS_ADD2LIST.
330      - many small changes (integer format) for large number of diagnostics
331      - start to use DIAGNOSTICS_ADDTOLIST (necessary for diagnostics with
332        a counter mate) in pkg diagnostics, ptracers, thsice & aim_v23.
333    o add parameter rotateGrid and Euler angles EulerPhi/Theta/Psi. For
334      usingSphericalGrid, this allows to define the rotated grid coordinates
335      via phiMin/thetaMin/dxSpacing/dySpacing, etc., but then re-compute the
336      geographical coordinates according to the inverse of the rotation defined
337      by the Euler angles, so that Coriolis parameter and online-interpolation by
338      exf works with the geographical coordinates on XC/YC/XG/YG.
339      Naturally, this feature does not work with all packages, so some
340      combinations are prohibited in config_summary (flt, flt_zonal, ecco,
341      profiles), because there the coordinates are assumed to be regular
342      spherical grid coordinates.
343    o pkg/gmredi,ctrl,ecco,autodiff,grdchk and model/src,inc:
344      - introduce isopycnal diffusion coefficient control.
345    o tools/adjoint_options:
346      - additional control vector components.
347    o pkg/mnc: have mnc create marginally meaning full coordinate variables
348      (that is the grid indices) if usingCurvilinearGrid and NOT EXCH2
349    o pkg/mypackage:
350      - add example of read/write pickup for state-var ;
351      - add entry points to the main code for state-vars diags & write-pickup.
352    o pkg/exf: rewrite of exf_getffieldrec.F to properly deal with year
353      transitions for useExfYearlyFields
354      - add new subroutine that determines the file to read from for
355        use*YearlyFields = .TRUE. and .FALSE.
356      - add a verification experiment to global_with_exf that tests
357        useExfYearlyFields with USE_EXF_INTERPOLATION defined
358    o pkg/obcs/exf: add useOBCSYearlyFields (=.FALSE.) to obcs with exf in
359      analogy to useExfYearlyFields; rearrange obcs_prescribe_read: two new
360      subroutines (which could be generated from a template, because they are
361      almost identical), for now they are included in obcs_prescribe_read.F for
362      simplicity
363    o pkg/exf:
364      - add a little more diagnostic to exf_interp_read (in analogy to
365        mds_read_field, can be turned off with debugLevel < debugLevA=1)
366      - improve vectorizability of exf_interp for TARGET_NEC_SX, makes code
367        ugly but fast by unrolling short inner loops, inserting a unroll=8
368        directive in routine lagran, and splitting a loop and making do while the
369        outermost loop (the latter requires the intoduction of index arrays)
370    o pkg/obcs: replace obcs_apply_area/heff/hsalt/hsnow with obcs_apply_seaice
371    o pkg/seaice: moved DIFFERENT_MULTIPLE from seaice_model to seaice_dynsolver
372      http://forge.csail.mit.edu/pipermail/mitgcm-devel/2008-January/003173.html
373    o verification/seaice_obcs: updated for restart test and latest options
374    o pkg/seaice: add a new flag SEAICEuseTEM to use a slightly different
375      ice rheology (so-called truncated ellipse, that gets rid of tensile stress);
376      for now this is only available for the C-grid code and also within
377      #ifdef SEAICE_ALLOW_TEM, because this option may slow down the EVP code
378    
379    checkpoint59m
380    o pkg/seaice: use different time constant for melting (SEAICE_gamma_t)
381      and freezing (SEAICE_gamma_t_frz) ice due to mixed layer temperature
382    o gad_som : fix flux output (& diagnostics) to have same units as other  
383      advection scheme fluxes (was previously multiplied by deltaT).  
384    o added verification/seaice_obcs both to test seaice open boundaries
385      and to provide an example matlab scrpt for generating them
386    o added verification/lab_sea/input.salt_plume for testing pkg/salt_plume
387    o pkg/salt_plume: clean up salt_plume_frac.F to
388      remove redundancy in PlumeMethod 1 and 4
389    o pkg/kpp: added saltplume diagnostics
390    o pkg/obcs and pkg/seaice:
391      - do not set uice and vice to zero when OB*icefile are unspecified
392      - OBCS_SEAICE_AVOID_CONVERGENCE is undefined by default
393      - moved seaice tracer obcs after call to seaice_growth
394    o pkg/salt_plume: added various options for salt plume depth
395      criterion and for vertical distribution of the salt
396    
397    checkpoint59l
398    o pkg/ptracers: new version of ptracers pickup:
399      read meta file and write only fields which are needed to restart.
400      ( same logic as main pickup file ; also using pickupStrictlyMatch )
401    o pkg/seaice:
402      - add timescale for melting due to warm mixed layer as a means of
403        setting SEAICE_availHeatFrac more conveniently
404      - add a CPP-flag/runtime parameter check for flooding algorithm
405      - reformulated availHeat in seaice_growth.F to be independent of AREA
406    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
407      unit changes
408    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
409    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
410      SX vector computer.
411    o pkg/seaice:
412      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
413        seaice forcing fields can now be read only through pkg/exf
414      - removed some unused halos
415    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
416    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
417      or U/VICE from U/VWIND before computing U/VSTRESS
418    
419    checkpoint59k
420    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
421      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
422    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
423      all experiments pass when compile with un-initialised var. checking option.
424    o added pkg/salt_plume
425    o script to test restart (for now, in MITgcm_contrib/jmc_script)
426    o pkg/seaice: new read/write pickup version.
427      read meta file and write only fields which are needed to restart.
428      ( same logic as main pickup file ; also using pickupStrictlyMatch )
429    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
430    o lab_sea.hb87: modify the domain & update output.hb87.txt :
431      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
432      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
433      process. Fixed here by closing the domain at the Northern boundary.
434    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
435    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
436      a set of consecutive levels in/from a 3-D array.
437    o pkg/ptracers:
438      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
439      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
440    
441    checkpoint59j
442    o in pkgs: dic, obcs, offline, rbcs:
443      standard way to compute coeff. for time interpolation between 2 time reccords
444      which retains full precision (& make results less dependent on compiler).
445      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
446    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
447      packages instead of reading ice cover and wind speed separately
448    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
449     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
450      to allow to compile customized code before the update)
451    o cleaning-up:
452      - fix CPP instruction syntax in pkg/obcs
453      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
454        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
455      - fix some threads issue in IO parts.
456    o pkg/dic:
457      - add tons of "_d 0" (--> much better testreports !)
458       and then update outputs of tutorial_global_oce_biogeo
459    o pkg/mom_fluxform:
460      add a special version of momentum advection intended to conserve momentum
461      next to a bathymetry step or a coastline edge. (default = off = #undef)
462    o new read/write pickup version:
463      - for now, only implemented for main (mdsio) pickup file.
464      - write out only what is needed to restart; merge pickup_nh , pickup_ph
465        and main pickup together.
466      - read meta file; read only what is needed to restart; stop if a field
467        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
468        if it make sense (even if the restart is not perfect).
469      - if no meta file, assume that pickup to read corresponds exactly to
470        a pickup that would currently be written.
471      - read pickup written in the old format (until checkpoint59i) if it
472        recognizes an old meta file (no field-list).
473      - add a meta file in exp. which starts from a pickup: 2 cases:
474        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
475         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
476        b) a meta file describing the content of the associated pickup file
477         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
478    o pkg/mdsio & pkg/rw:
479      - new routine to read a meta file ; new set of routine to read
480        Multiple-fields file (with meta file).
481    o added open boundary conditions capability for seaice
482        HSNOW, HSALT, UICE, and VICE
483    
484    checkpoint59i
485    o adjoint:
486      * fix multiDimAdvection adjoint
487        (partial recomputation problem by TAF for fVerT(:,:,kDown)
488        and comlev1 size definition (maxpass vs. max. number of tracers)
489      * verification/global_ocean.90x45x15 adjoint now tests
490        NLFS and multiDimAdvection using DST3 (=30)
491      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
492    o pkg/kpp: add "_d 0" to real constant (if missing);
493      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
494      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
495    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
496      for internal parameters related to restart process (formerly from PARAMS.h)
497      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
498    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
499      as argument. (only atm2d & obcs write_pickup have not yet been updated)
500    o pkg/monitor:
501      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
502      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
503      - account for deep Atmosphere factor and density factor (anelastic)
504    o added open boundary conditions capability for seaice HEFF and AREA
505    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
506      thermodynamics
507      - requires a little reorganization, which affects the testreport results
508        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
509        so that now the conservative form is tested
510      - add a few comments
511    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
512    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
513    o add new diagnostics to seaice: advective, diffusive fluxes (only for
514      multidim-advection, for scheme 2 they are not filled) and transports,
515      thermodynamic growth rates
516    o change units of EmPmR (inside the code, + within coupling interface)
517      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
518      Affects results @ truncation level (cg2d match) and update output of
519       experiments: lab_sea(6), global_ocean.90x40x15(10),
520      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
521      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
522      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
523      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
524    
525    checkpoint59h
526    o pkg/exf:
527      - improve vectorization by moving if-statement out of loops in
528        exf_mapfields, exf_radiation
529      - exf_bulkformulae.F: introduce 2D fields and vectorize code
530    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
531    o testreport:
532      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
533        monitor & update offline_exf_seaice exp. output.
534      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
535    o pkg/seaice:
536      - bug fix in the evp solver: boundary conditions were affected be
537        masking of zMax/zMin (changes results)
538      - minor bug fix in boundary conditions in seaice_calc_strainrates
539        (changes results for no_slip)
540      - seaice_lsr.F: make interpolation of eta dependent on boundaries
541      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
542      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
543        stress formulation and no-slip boundary conditions
544    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
545      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
546    o pkg/seaice: a first HSALT time stepping equation has been checked in
547    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
548      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
549      without requiring DO-IF statements
550    o pkg/thsice:
551      use continuous power-law function for partition of energy between lateral
552      melting/freezing and thinning/thickening ; old code using step function
553      still available with #undef THSICE_FRACEN_POWERLAW
554      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
555    o testreport: change AD testing : check against results/output_adm.txt
556      using same scripts as for forward test.
557    
558    checkpoint59g
559    o adjoint testing: in preparation for changing testreport:
560      - output format: cost and grad written on separated lines
561      - ad output results in directory "results" (instead of "results_ad")
562    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
563    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
564    o pkg/ecco: allow user defined cost function contributions
565    o testreport:
566      Allow to choose (per experiment) the list of tested output variables
567       and the main variable (used to issue a pass/FAIL ) ;
568      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
569      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
570      Also modify printing of summary:
571       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
572       b) echo the list of tested variables in the individual summary.txt of
573          each experiment.
574    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
575      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
576      (but still depend on the tile decompostion of the domain).
577    o pkg/seaice: change a discretization detail to make the B-grid code
578      "more symmetric". This change is likely to remove all "ridges/leads" that
579      where quasi-aligned with the grid in B-grid solutions. It may also be
580      the solution to the stress coupling issues with the B-grid.
581    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
582      remove .cvsignore from input dir. (since testreport no longer run here).
583    o pkg/thsice:
584     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
585     - fix reshaping of sea-ice just after advection:
586       melt all the ice only if ice-volume is too small.
587     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
588       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
589     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
590    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
591      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
592    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
593      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
594      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
595      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
596      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
597      -> update output.txt
598    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
599     this affects truncation error: -> update output.txt of exp:
600      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
601      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
602    
603    checkpoint59f
604    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
605    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
606      a bounded range (in forward mode)
607    o pkg/ecco, ctrl, autodiff and mom_common:
608     internal parameter controls, completements of implementations
609    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
610    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
611      (not seem any difference in testing results).
612    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
613       at face corners.
614    o pkg/generic_advdiff:
615     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
616      loop range indices for computing vertical advection tendency
617      and do the calculation in the interior only (no overlap) ;
618      for now, only implemented for SOM advection (to save CPU time).
619     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
620    o exch2 adjoint
621      First set of changes:
622      - add exch2 hand-written adjoint templates
623      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
624        This will require cleanup in pkg/autodiff/*.F
625        (changed routines currently kept separate in verif. code/)
626      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
627        that used to hide exch2 or cubed-sphere specific code
628        (commented via 'cph-exch2')
629    o pkg/seaice
630      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
631    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
632       output of global_ocean.cs32x15.thsice .
633    
634    checkpoint59e
635    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
636      for B-grid vector (not yet tested) and C-grid vector (<- only used
637      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
638    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
639      (#ifdef ALLOW_SALT_PLUME)
640    o gather_2d/scatter_2d: removed halo regions
641    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
642      scheme and the corresponding test case (under front_relax dir). For now,
643      only available with Skew-flux form and not yet tested in realistic set-up.
644      adjoint: store directives updated, but gradient checks deteriorated,
645      so maybe GM/Redi adjoint is now broken.
646    o seaice adjoint
647      * add AREA, HEFF, HSNOW as control variable
648        (should not change lab_sea results)
649      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
650    o pkg/seaice:
651      * added computation of saltFlux in seaice_growth;
652        For time being, sea ice salinity is assumed constant
653        contribution of snow flooding to freshening of sea ice is neglected.
654        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
655        defaults to 0.0 in order to maintain backward compatibility.
656        Typical values for SEAICE_salinity are 4 to 10 g/kg.
657      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
658      * added SEAICE_availHeatFrac, which specifies fraction of surface level
659        heat content used to melt or grow ice
660      * commented out cap of HICE: it helps keep ice thinner
661      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
662      * applied OBCS T/S mask to HEFFM sea ice mask
663    
664    checkpoint59d
665    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
666     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
667     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
668    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
669     and change default value of parameter "GM_Small_Number";
670     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
671       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
672       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
673    o pkg/ecco: cost function when applying pkg/smooth to controls
674    o pkg/ctrl: add forcingPrecond run time parameter
675    o pkg/seaice:
676     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
677     - fix bug in metric terms of u-equation in LSR solver (implicit part),
678       changes verification/lab_sea
679     - rearrange implicit part of u-equation in LSR solver to make it easier to
680       read, understand, and debug. This causes changes at the truncation level.
681     - fix (serious) bug in the boundary conditions (sign error in the implicit
682       part) of the LSR solver. Changes all LSR results.
683     - fixed problem with HSNOW initialization to avoid thick snow when AREA
684       is initilized with small values - does not change lab_sea results.
685     - added HsnowFile initialization capability
686    o pkg/smooth: addition to model/src and pkg/ctrl so allow
687     initialization of pkg/smooth and application to control vector
688    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
689    o dependencies: pkg/profiles requires pkg/cal
690    o pkg/profiles:
691     - added option ALLOW_PROFILES_GENERICGRID
692         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
693         that interpolation information (grid points and coefficients) is provided
694         within the netcdf input files.
695         -> sample matlab scripts can be found in MITgcm_contrib/gael
696         that allow you to prepare netcdf input files.
697     - also modified: cleaner include statements, cleaner error print statements,
698       cleaner stops when error, and more tests of the netcdf input files consistency.
699    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
700    o pkg/seaice:
701     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
702       requires a new routine: seaice_diagnostics_fill.F
703     - make sure that seaice does not move if not forced (pressure replacement
704       method, Hibler and Ip, 1995), changes results
705     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
706     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
707       It is turned off by default (=-1.), because it changes the results.
708     - make it possible to read AREA from a file, too.
709    
710    checkpoint59c
711    o add S/R and diagnostics for oceanic mixed-layer depth
712    o move GMRedi call after all vertical mixing schemes (including KPP)
713    o pkg/thsice:
714     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
715      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
716    o pkg/obcs:
717     - bug fix for balance code
718    o pkg/seaice:
719      - allow values of SEAICE_elasticParm > 1
720      - add new parameter SEAICE_evpTauRelax as an alternative
721        to SEAICE_elasticParm
722      - make lsr boundary conditions free slip (by default), changes result
723      - add code for no slip boundary conditions for lsr
724      - set minimum of zeta to zero (and not 4e8) (changes results)
725      - add a cap on AREA after advecting AREA if seaice_growth is not called
726    o change calculation of Visbeck K:
727      - no longer depend on tapering scheme; instead, compute slope (limited
728        by GM_maxSlope). this is equivalent to what was comuted before with
729        clipping or linear tappering.
730      - fix vertical averaging (wrong by 1/2 level)
731      - leave the old version (but will not be maintained) within
732        #ifdef OLD_VISBECK_CALC / #endif
733      - update output of exp. ideal_2D_oce
734    o change error catch in calc_r_star to improve vectorization
735    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
736      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
737    o adjoint:
738      Re-organized adjoint checkpointing according to Matt Mazloff
739      (but with modifs/completions/cleanups)
740      Storing is now bundled into large arrays to optimized I/O
741      (and second step in cleanup of the_main_loop)
742    
743    checkpoint59b
744    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
745      - export/import (between ocean & coupler) fields needed for ocean DIC.
746    o pkg/seaice:
747      - get rid of three more exchanges seaice_calc_viscosities (required
748        different loop boundaries in seaice_lsr and seaice_ocean_stress)
749      - bug fix in seaice_ocean_stress (update of lab_sea required)
750      - reduce loop boundaries to necessary minimum also in seaice_evp
751      - go back to the old way of computing deltaC/Z as the adjoint likes that
752        better
753    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
754      passive tracer to an Age Tracer) + update output.txt
755    o pkg/exf:
756      - implement A-grid / C-grid selection for wind-stress input files.
757      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
758      for now, in exf_bulk_largeyeager04.F only :
759      - change implementation for case where windspeed + 2. components wind-stress
760        are read-in. AND use rhoConstFresh to convert evap.
761    o pkg/seaice:
762      - use correct EXCH_UV for wind-forcing (on A-grid).
763      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
764        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
765    o pkg/exf:
766      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
767      EXF_INTERPOLATION:
768      - merge global_with_exf/code version of exf_interp_read.F
769        to the main code ;
770      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
771        reading the file ; Important: This options needs to be defined to recover
772        previous code.
773        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
774      - no longer loose real*8 precision along the way when using exf_iprec=64.
775    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
776      - change discretisation of evp-solver in order to avoid another exchange
777        (changes lab_sea) and clean up a little
778      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
779        help the adjoint (this also changes the results slightly)
780      - add a few "_d 0" where they had been missing in seaice_evp.F
781      - cleaning up: remove unused seaice_calc_rhs.F
782    o pkg/exf: some cleaning-up:
783      - change various "constants" into runtime parameters
784      - cleaned-up Large&Yeager04 routine which should eventually
785        replace exf_bulkformulae.F (changed names of S/R and CPP)
786        and merged various ALLOW_ATM_WIND options
787     only used with thsice pkg (in thsice_get_exf.F):
788      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
789        which are used when useStabilityFct_overIce=TRUE (= the default)
790      - change default values of ice & snow emissivity and scale downward LW
791        by ice & snow emissivity.
792    o pkg/thsice:
793     fix few little problems, in thsice_calc_thickn.F:
794      - growth vertically (and not laterally) if iceFrac == iceMaskMax
795      - melt only laterally if hIce < hThinIce (as the comments say)
796      and in thsice_extend.F:
797      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
798      - start to form ice as soon as the minimum ice-volume is reachable.
799     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
800      and cpl_aim+ocn
801    o pkg/kpp
802     - move computation of surface related input fields to KPP into a new
803       subroutine kpp_forcing_surf.F
804     - remove wrong (within bi,bj loops) EXCH calls.
805     - little cleaning (add argument myThid in last position, cvs header ...)
806     - for now, fix conservation problem by exchanging KPPviscAz (may not
807       be the best fix)
808    o pkg/seaice
809     - check for inconsistent evp parameter/cpp-flag combination
810     - remove leftover errIO flat for obsolete name list error handling
811    o OpenAD
812     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
813    
814    checkpoint59a
815    o pkg/seaice: some parameter clarifications and a little bit of clean up
816    o pkg/thsice: rename run-time parameters:
817       himin       -> hIceMin
818       himin0      -> hThinIce
819       hihig       -> hThickIce
820       i0          -> i0swFrac
821       transCoef   -> bMeltCoef
822       frac_energy -> fracMelting
823      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
824       with default values (for now) that do not change the results.
825      remove old version of thsice vars advection in pkg/seaice.
826    o in FFIELDS.h:
827      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
828      - make pLoad & sIceLoad always available (but still only used if
829         ATMOSPHERIC_LOADING is #define).
830    o pkg/kpp: replaced _KPP_RL with _RL
831    o bug fixes for vertical diffusivity computations when both KPP and
832        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
833        are no longer updating the vertical diffusivity array
834        (passed as argument) but are (re-) setting those arrays.
835    o pkg/seaice: fix bug in evp solver, while doing that
836      - change (improve?) discretization of stress computations for both
837        cgrid-lsr and evp solver
838      - add a new routine to compute strain rates
839      - the above changes lab_sea results
840      - add no slip conditions for evp solver (off by default), lsr-version
841        may follow
842      - fix exchange for shear at Z-points (does not change lab_sea)
843      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
844        (to force the user to pick a time step since there is not "safe" way
845        of choosing it)
846      - add principal stress diagnostics
847      - rearrange fields for evp a little to avoid having to call a: too many
848        exchanges and b: exchanges for stress trensor components which we do
849        not have.
850      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
851        of evp, complete rewrite for lsr case (latter is does not yet work
852        in all cases)
853    o pkg/kpp: add code to have mixing in shelf ice caverns
854      - add myThid to all kpp routines (long overdue)
855    
856    checkpoint59
857    o pkg/exf:
858      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
859        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
860      - move exf header files from lower_case.h to UPPER_CASE.h ;
861        add missing cvs Header & Name
862      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
863      - add namelist param. selectStressGridPosition, exf_monFreq
864      - retire many _CLIM routines, and remove data.exf_clim
865        + params moved to data.exf
866        + climsst, climsss now handled by exf_set_gen, i.e.
867          climss?period=0 refers to constant field,
868          climss?period=-12 to monthly forcing
869      - split up namelists in data.exf
870    o pkg/seaice:
871      - remove seaice_exch and seaice_exch_uv
872      - remove superfluous exchange of theta
873      - add myThid to seaice_budget_ocean/ice
874      - add new interface for atmospheric wind forcing (C-grid only)
875        + new routine
876        + two new field (taux, tauy for stress over ice)
877        + removed one global field (DAIRN) for C-grid case only
878    o pkg/thsise
879      - 2nd set of modifs for thsice adjoint in conjunction with exf
880    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
881    
882    checkpoint58y_post
883    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
884      vertical diffusivity, similar to that in MOM4; turned on using
885      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
886      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
887    o Added capability for 3D specification of background vertical diffusion
888      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
889      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
890      "data" file that contains the 3D vertical diffusivity coefficients.
891    o ice dynamics (pkg/seaice) with thsice thermodynamics:
892      - add code within pkg thsice to advect & diffuse sea-ice fields
893      similar to (and will replace) what has been added in  seaice_advdiff.F,
894      but: - conserving Mass, Heat & Salt.
895           - better when using non-linear advection scheme (not yet fully tested)
896           - can also be used in atmospheric set-up (for now, only the diffusion).
897    
898    checkpoint58x_post
899    o IO option for global-file compact format:
900      - add options when generating topology (utils/exch2/matlab-topology-generator)
901      - add I/O capability (pkg/mdsio).
902      - adapt utils/matlab/rdmds.m to read this format.
903      for now long-line format not yet supported by pkg/mdsio (& exch2).
904    o shelfice: add a few diagnostics
905    
906    checkpoint58w_post
907    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
908      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
909      (and replace horiVertRatio in NH code).
910      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
911                         and tutorial_plume_on_slope (sensitive to truncation)
912    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
913      directly to drive seaice model (C-grid only)
914    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
915     - reintroduce computation of wind from stress,
916     - compute tau (in exf_bulkformulae.F) from windstress averaged to
917       mass points to avoid tau = 0
918     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
919    o rdmnc.m: make it work with "global" files created with gluemnc
920    o rdmnc.m : some improvements in dealing with singleton dimension
921      (tested on all testreport mnc output files).
922    o genmake2: disable pkg/profiles if netcdf test fails.
923    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
924    o move call to cal_readparms up to make calendar parameters/variable available
925      to all packages
926    
927    checkpoint58v_post
928    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
929      useDynP_inEos_Zc tested.
930  o pkg/exf: changes to properly interpolate/mask/scale initial fields  o pkg/exf: changes to properly interpolate/mask/scale initial fields
931  o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields  o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
932    and portions thereof.  See read_cs.txt for description and examples.    and portions thereof.  See read_cs.txt for description and examples.

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