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revision 1.750 by jmc, Fri Nov 24 00:13:37 2006 UTC revision 1.1047 by jmc, Mon Dec 29 03:45:44 2008 UTC
# Line 4  $Name$ Line 4  $Name$
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    checkpoint61g
8    o pkg/flt:
9      - move FLT_CPPOPTIONS.h to FLT_OPTIONS.h (standard name)
10       + make OPTIONS file more standard.
11      - rename S/R MDSREADVECTOR_FLT to FLT_MDSREADVECTOR (to mach src file name)
12      - fix _BYTESWAPIO CPP-Flag
13      - standard reading of file-parameter "data.flt"
14      - fix argument list of S/R FLT_RESTART
15      still need to fix _BYTESWAPIO in pkg/mdsio/mdsio_writevector.F
16    o pkg/obcs: fix a CPP-flag, bug reported by Jeff Blundell
17    o gather_2d.F/scatter_2d.F: suppress vectorisation on NEC SX in respond to
18      a still unfixed compiler/optimization bug
19    
20    checkpoint61f
21    o pkg/seaice, LSR solver: fix bug in GLOBAL_MAX calls ;
22      update results of global_ocean.cs32x15.icedyn test.
23    o move getcon.F from model/src to pkg/fizhi.
24    o pkg/exf: add parameter for extrapolation of temp up to the surface
25       and option to prevent negative evap (in bulk_largeyeager04 only).
26    o Prather Advection scheme: fix tracer conservation for divergent flow
27      (e.g., when using NonLin Free-Surface).
28    o kpp: retire KPPmld diagnostics --> use MXLDEPTH instead
29    o gmredi (Visbeck-variable-K):
30     - add more parameters to Visbeck-variable-K.
31     - use a 5 points average for dSigmaR in Visbeck-K calculation
32       (more "homogenous": same stencil and same weights as in dSigmaH)
33     - update output of ideal_2D_oce experiment.
34    o fix CPP-flag REAL4_IS_SLOW, when _RS expands into real*4
35      (#undef REAL4_IS_SLOW)
36     - pkg/mnc/mnc_cw_cvars.F: write _RS-grid variable as netcdf-real*4
37       coordinate variable
38     - pkg/monitor/monitor.F: call mon_printstats_rs for _RS variables
39       (surface forcing fields), removes some of the functionality
40     - model/src/write_grid.F: write _RS variables as RS-netcdf variables
41     - model/src/diags_oceanic_surf_flux.F: fix a few diagnostics, but
42       probably not all: copy _RS surface flux fields to RL field before
43       calling DIAGNOSTICS_FILL
44     - model/inc/CPP_EEMACROS.h: make the _EXCH_*_RS macros expand into
45       real*4 (CALL EXCH_*_RS) versions.
46     - tested in 2 experiments: inverted_barometer & solid-body.cs-32x32x1
47       (generate new output).
48    
49    checkpoint61e
50    o gmredi (Visbeck-variable-K):
51      - fix the "OLD_VISBECK_CALC" option + move the #undef to GMREDI_OPTIONS.h
52      - change computation of Visbeck-K where Slope > Smax :        
53        now: N*min(Slope,Smax) (similar to OLD_VISBECK_CALC with gkw91 taperFct)
54        previously was: M*sqrt(min(Slope,Smax)) ; update ideal_2D_oce output.
55    o bottom-drag in P-coord.: change units of bottomDragLinear & bottomDragQuadratic
56      to be the same as with Z-coord. (i.e., m/s & no-units respectively).
57    o calc_viscosity: fix index range (was wrong for CD-Scheme & explicit Visc)
58    o pkg gmredi, linear & fm07 tapering: put an upper limit on Slope^2 so that Kwz
59      does not become too large (to avoid precision problems in implicit-diffusion
60      solver); update ideal_2D_oce output.
61    o pkg ggl90:
62      - in ggl90_cal.F: compute only one set of visc/diff, used to
63        step forward TKE/T/S/momentum
64      - default value of GGL90viscMax/GGL90diffMax larger and equal (to
65        have Prandlt =1)
66    o gmredi (fm07):
67      - add lower limit on Transition layer thickness + lower limit on 1/lambda
68      - allow to set few more params from data.gmredi
69    o pkg ggl90:
70          - add missing sqrt(2) factor in computation of mixing length
71            scale in ggl90_calc.F
72            (see Eq. (2.35) in Blanke and Delecluse, JPO, 1993)
73    
74    checkpoint61d
75    o adjoint modifs
76      - adapt to new field rhoInSitu
77      - allow to revert from StoreDynVars2D, StoreDynVars3D
78        to individual fields
79        (switches AUTODIFF_USE_OLDSTORE_2D, AUTODIFF_USE_OLDSTORE_3D)
80    o store 3-D (in-situ) density in commom block (DYNVARS.h)
81     - save 1 rho computation.
82     - no longer modify T & S inland when using down_slope pkg.
83    o gad_som : allow to switch to SOM advection for T & S without corresponding
84      pickup files (using new S/R: MDS_CHECK4FILE).
85    o keep removing _BEGIN/_END_MASTER between MDSIO S/R call
86      (for useSingleCpuIO to work in multi-threaded)
87    o pkg/shelfice:
88     - disentangle parameters: retire shelfIceFile in data/PARM05 and substitute
89       with SHELFICEtopoFile in data.shelfice
90     - move code for reading ice shelf topography and modifying hFacC into separate
91       subroutines of the shelfice package
92     - separate initialisation of "fixed" and "variable" variables
93     - kTopC is not (yet) replaced by kSurfC, although this is possible
94    o fix broken diagnostic SIatmFW and changed the units from m/s to kg/m^2/s
95    o add initialisation of deepFac if using Pcoords (new S/R set_grid_factors)
96      and rename:
97      ini_phiref.F          --> set_ref_state.F  (+ set anelastic factors)
98      ini_reference_state.F --> load_ref_files.F (- set anelastic factors)
99    o change FIND_RHO_SCALAR : return rho (instead of rho - rhoConst)
100    
101    checkpoint61c
102    o add option ALLOW_ADDFLUID and run-time selector "selectAddFluid"
103      to add mass source/sink of fluid in the interior (3-D generalisation
104      of oceanic real-fresh water flux).
105    o pkg/monitor: fix recip_dr argument in mon_advcflw2 call (-> advcfl_W_hf_max)
106    o vermix test experiment: switch from LINEAR EOS to MDJWF (not tested before)
107    o new pkg: down_slope
108      density-driven downsloping flow parameterisation (Tellus, 1999, 412-430).
109      - presently, modify T & S inland (dwnslp_calc_rho.F).
110        can be avoided if rho was stored in common bloc and used in calc_phi_hyd.
111      - implementation for ocean in P-coords not tested.
112      - add secondary test to global_ocean.90x40x15 (input.dwnslp) to check this pkg.
113    o move kSurfC,kSurfW & kSurfS from SURFACE.h to GRID.h (next to kLowC)
114      (to facilitate conversion of oceanic pkg to p-coordinate).
115    o change FIND_RHO to FIND_RHO_2D :
116      pass arguments tFld & sFld as local (tile) 2D-arrays ; +fix EOS_CHECK.
117    o new pkg: cheapaml
118    
119    checkpoint61b
120    o exch2:
121      change index bounds in rx2_cube exchanges (new S/R: EXCH2_GET_UV_BOUNDS)
122      - no longer depend on the order sequence (N,S,E,W).
123      - 3rd exchange no longer needed (tested with 24 tiles).
124      - same modif to hand-written adjoint S/R (global_ocean.cs32x15: zero diff)
125      - exch_UV_A-grid readily available (but not yet tested).
126      comment out 3rd exch call and remove copy of V to U at SE & NE face-corners
127      (both are no longer needed) in exch_uv: no effect in forward run; but
128       get truncation error differences with adjoint exch.
129    o exch2:
130     - change index-bounds storage (moved from target to local tile,
131       more intuitive this way) ; rename/remove some variables.
132     - change utils/exch2/matlab-topology-generator & code_mods accordingly.
133    
134    checkpoint61a
135    o exch2/matlab-topology-generator:
136      fix bug in index bounds for N-S internal exchange (hard to tell if this
137      had any effect on the solution).
138    o pkg/mnc: small fix in mnc_handle_err: make sure that length of msgbuf
139      is exceeded
140    o testreport: modify syntax of awk, so that it works also with
141      awk, and not only with nawk and gawk
142    
143    checkpoint61
144    o autodiff
145      Change default for TAF usage by removing argument '-nonew_arg'
146      This changes TAF subroutine argument list (ordering of active var.)
147      Omission of this flag leads to incompatibility w.r.t. TAMC
148      To restore TAMC-compatibility, need following modifs:
149      * use adoptfile tools/adjoint_options/adjoint_tamc_compatibility
150      * use CPP option #define AUTODIFF_TAMC_COMPATIBILITY
151      Tested TAF version is 1.9.22
152      N.B.: exch2 hand-written adjoint code currently not TAMC compatible
153    
154    checkpoint60
155    --->>> This is the last checkpoint for which generating the adjoint
156    --->>> is done via the TAMC-compatibility TAF-flag "-nonewarg"
157    --->>> by default.
158    --->>> Future checkpoints will ommit this flag by default.
159    o pkg/generic_advdiff, os7mp: simplify and avoid division by zero.
160    o pkg/grdchk: Add gradient check to etan0 perturbations.
161    o pkg/exf: read ice area from file (#ifdef ALLOW_ICE_AREAMASK).
162    o pkg/autodiff: more flexibility in zeroadj.
163      model/src: modifying do_oceanic_phys.F accordingly.
164    o pkg/ctrl: Bounds for (kapgm,kapredi,eddypsi) parameter estimation.
165    o model/src and pkg/gmredi: GMREDI_WITH_STABLE_ADJOINT CPP option
166      special setup of gmredi for which the adjoint is stable
167      enough for parameter optimization.
168    o bridging the gap between eddy stress and GM.
169      -> eddyTau is replaced with eddyPsi (eddyTau = f x rho0 x eddyPsi)
170          along with a change in CPP option (now ALLOW_EDDYPSI).
171      -> when using GM w/ GM_AdvForm:
172          The total eddy streamfunction (Psi = eddyPsi + K x Slope)
173          is applied either in the tracer Eq. or in momentum Eq.
174          depending on data.gmredi (intro. GM_InMomAsStress).
175      -> ALLOW_EDDYPSI_CONTROL for estimation purpose.
176      The key modifications are in model/src/taueddy_external_forcing.F
177      pkg/gmredi/gmredi_calc_*F pkg/gmredi/gmredi_*transport.F
178    
179    checkpoint59r
180    o new S/R (pkg/mdsio/mdsio_facef_read.F) reading of sNx+1 x sNy+1 array
181      from per-face file (take S/R READSYMTILE_RS out of ini_curvilinear_grid.F);
182      fix option to read coriolis(@ cell-corner) from files with CS-grid.
183    o pkg/mnc: add some attributes to standard 1D-coordinate variables
184    o pkg/diagnostics: enforce missing_value attribute for scalar variables at
185      mass points, when using mnc for output
186      - add runtime parameter (missing_value, missing_value_int) to override
187        default (which is the value of getcon('UNDEF'))
188    o pkg/mnc: prepare mnc for the actual use of missing values with the
189      diagnostics package: small fix in mnc_cw_readwrite.template and more
190      initialisation of never used fields
191      - replace mnc_common.h and mnc_id_header.h with corresponding upper case
192      versions
193    o pkg/thsice/thsice_ini_vars.F added default initial values so that
194      thermodynamics sea ice solver does not blow up when some initial fields
195      are missing.
196    o move from external_forcing_surf.F to ini_forcing.F
197      the p-coord. hack consisting in using pLoad to set phi0surf ;
198      update output of tutorial_global_oce_in_p (affected @ truncation level).
199    o Freshen up a bit hs94.1x64x5, notably:
200      remove rotationPeriod and tRef=5*0. (adjoint only), and add
201      exactConserv=.TRUE.
202    o pkg/generic_advdiff:
203      change option GAD_ALLOW_SOM_ADVECT to GAD_ALLOW_TS_SOM_ADV which only
204      applies to files where Temperature & Salinity 2nd Order moments are used.
205    o pkg/ptracers: add second-order moment advection schemes (80 and 81);
206      this uses a dynamically allocated internal state data structure
207      (#define PTRACERS_ALLOW_DYN_STATE in PTRACERS_OPTIONS.h)
208      and requires a fortran 90 compiler
209    
210    checkpoint59q
211    o pkg/mom_vecinv: Add energy & enstrophy conserving scheme (selectVortScheme=3)
212       (from Sadourny, described by Burridge & Haseler, ECMWF Rep.4, 1977)
213    o Refresh tutorial_global_oce_biogeo, notably:
214      - change bathymetry (put back seamounts in ACC, use hFacs)
215      - change EOS (POLY3 --> JMD95Z)
216      - use Bryan-Lewis vertical diffusivity
217      - use multidimensional advection
218      - remove old virtual virtual in dic pkg, now done through ptracer pkg
219      - change a couple of parameters in dic pkg
220    o pkg/ctrl: change formula in adctrl_bound.F and add a parameter to ctrl_map_ini_gen.F
221    o pkg/obcs: change default to OBCSfixTopo = .true.,
222      - set OBCSfixTopo=.false. in exp4/input/data.obcs to reproduce old result
223      - replace "debugMode" with "debugLevel .GE. debLevB"
224    o implementation of TAF directives for gchem,cfc,dic
225    o remove "exp5" (replaced by tutorial_deep_convection).
226    o pkg/obcs: add code to fix topography gradients normal to open boundaries;
227      this requires computing the index fields OB_Jn/Js/Ie/Iw in obcs_readparms;
228      the code can be turned on by setting OBCSfixTopo = .true. in data.obcs
229      --> changes results in exp4, seaice_obcs
230    o tutorial_deep_convection :
231      update the set-up and increase resolution and domain size ; start
232      from pseudo initial conditions = output at t=120mn in order to see
233      something happening when running testreport.
234    o pkg/seaice: add os7mp as an advection scheme
235                  add check for advection schemes
236                  add a flag for restoring T and S underneath sea ice
237    o pkg/my82: add netcdf-support and diagnostics
238    o thsice pkg:
239      - Now hsMax limits snow height by turning it into ice following
240        flooding scheme (and now conserving energy)
241      - Slight rewriting of the formula in thsice_calc_thick.F
242      - Parameter rhowi eliminated to be replaced by floodFac = (rhosw-rhoi)/rhos
243      --> changes results of global_ocean.cs32x15.icedyn and global_ocean.cs32x15.thsice
244    
245    checkpoint59p
246    o gchem / dic / cfc :
247      - add useDIC, useCFC , read from "data.gchem" (& hold in GCHEM.h);
248      - add new parameter files: "data.dic" & "data.cfc" ;
249      - various re-arrangement in initialisation & header file ;
250      - fix tutorial_global_oce_biogeo for multi-threaded test.
251    o pkg/dic: test for "pickup_dic" file when restarting ;
252      if no pickup-file, can restart with a re-initialised pH (same as it did
253      before) providing pickupStrictlyMatch is set to False.
254    o change argument list of S/R PTRACERS_WRITE_PICKUP & MYPACKAGE_WRITE_PICKUP
255      + fix call to S/R GGL90_WRITE_PICKUP & DIC_WRITE_PICKUP
256    o add a "warning" (to Error msg file) when an Active Tracer is not using AB-2
257      and staggerTimeStep is off (needed for stability of Internal-wave dynamics).
258    o move out of PARAMS.h & data the last pieces of old-ptracer code: tauTr1ClimRelax,
259     & lambdaTr1ClimRelax ; put those 2 params in PTRACERS_PARAMS.h & data.ptracers
260       (note: not clear to me what lambdaTr1ClimRelax is still used for ...)
261    o pkg/mom_vecinv: - new parameter "selectVortScheme" to select which
262       scheme to use for vorticty-term ;
263     - compute upwindVorticity=T case within mom_vi_u/v_coriolis_c4.F
264       (with default selectVortScheme, return to original discretisation)
265     - remove weird combination (e.g.: upwindVorticity & highOrderVorticity)
266    o pkg/seaice: add a line to the summary to indicate grid type (B/C)
267    o in mom_calc_visc, fix average value of viscAh_W & viscA4_W next to the
268      bottom ; only used with variable horizontal viscosity and non-hydrostatic.
269      also fix diagnostics VISCAHW & VISCA4W.
270    
271    checkpoint59o
272    o dome/code/obcs_calc.F: avoid division by zero (detected using gfortran).
273    o change the loop ordering in most gad_*_adv_x.F to improve vectorization:
274      move a few statemens out the main loop into separate loops
275    o pkg/shelfice:
276      - sort out freshwater flux; convert freshwater fluxes to mass fluxes
277        (kg/m^2/s), does not break tests, because in verification/isomip,
278        rhoConstFresh=rhoConst (by accident)
279      - rearrange computation of tLoc, sLoc, pLoc to make code more efficient
280      - move S/R find_rho_scalar, pkg/ecco/sw_ptmp.F, pkg/ecco/sw_adtg.F into
281        new file model/src/seawater.F, so that they are available for all pkgs.
282      - convert potential temperature into in-situ temperature. This changes the
283        isomip tests => update tests
284    o add a flag writePickupAtEnd (default=true) to be able to suppress
285      writing a pickup at the last timestep
286    o tools/mpack-1.6 :
287      - disable automake (not working) and autoconf (not needed).
288      - update to version 1.6.4 which fix MD5 code on some 64 bits platforms
289        also cleaner with much less compilation warnings.
290    o pkg/profiles:
291      rename profiles_interp_mean_genericgrid as profiles_interp_mean_gg
292      (for "less than 32 characters name" compiler requirement)
293    o pkg/obcs and pkg/exf: added capability to specify seaice open boundary
294      conditions that have a different sampling frequency than S/T/U/V obcs
295    o pkg/diagnostics (stats-diags):
296      - fix global Min/Max in case 1 processor get only empty tiles
297    o genmake2: replace (4 times)
298         make genmake_tc_1.o >> genmake_warnings 2>&1
299      with
300         COMM="$CC $CFLAGS -c genmake_tc_1.c"
301         echo $COMM >> genmake_warnings
302         $COMM >> genmake_warnings 2>&1
303      to make genmake2 always see the value of CC as specified in the optfile.
304    o generic_advdiff: - prather advection scheme (SOM) coded for CS-grid.
305      - add diagnostics for 1srt & 2nd Order moments and sub-grid variance.
306      - modify verification advect_cs test to test SOM-advection on CS-grid.
307    o pkg/ctrl:
308      - Rewrite of ctrl_map_ini_ecco.F,
309        introducing a generic routine (ctrl_map_ini_gen.F).
310      - Modification of ctrl_bound/adctrl_bound handling control vector bounds.
311    
312    checkpoint59n
313    o pkg/diagnostics: for large number of diagnostics, store diagnostic mate
314      number in dedicate array "hdiag":
315      - new version of S/R DIAGNOSTICS_ADD2LIST : DIAGNOSTICS_ADDTOLIST
316        with 1 more argument (mate number); modify old version DIAGNOSTICS_ADD2LIST.
317      - many small changes (integer format) for large number of diagnostics
318      - start to use DIAGNOSTICS_ADDTOLIST (necessary for diagnostics with
319        a counter mate) in pkg diagnostics, ptracers, thsice & aim_v23.
320    o add parameter rotateGrid and Euler angles EulerPhi/Theta/Psi. For
321      usingSphericalGrid, this allows to define the rotated grid coordinates
322      via phiMin/thetaMin/dxSpacing/dySpacing, etc., but then re-compute the
323      geographical coordinates according to the inverse of the rotation defined
324      by the Euler angles, so that Coriolis parameter and online-interpolation by
325      exf works with the geographical coordinates on XC/YC/XG/YG.
326      Naturally, this feature does not work with all packages, so some
327      combinations are prohibited in config_summary (flt, flt_zonal, ecco,
328      profiles), because there the coordinates are assumed to be regular
329      spherical grid coordinates.
330    o pkg/gmredi,ctrl,ecco,autodiff,grdchk and model/src,inc:
331      - introduce isopycnal diffusion coefficient control.
332    o tools/adjoint_options:
333      - additional control vector components.
334    o pkg/mnc: have mnc create marginally meaning full coordinate variables
335      (that is the grid indices) if usingCurvilinearGrid and NOT EXCH2
336    o pkg/mypackage:
337      - add example of read/write pickup for state-var ;
338      - add entry points to the main code for state-vars diags & write-pickup.
339    o pkg/exf: rewrite of exf_getffieldrec.F to properly deal with year
340      transitions for useExfYearlyFields
341      - add new subroutine that determines the file to read from for
342        use*YearlyFields = .TRUE. and .FALSE.
343      - add a verification experiment to global_with_exf that tests
344        useExfYearlyFields with USE_EXF_INTERPOLATION defined
345    o pkg/obcs/exf: add useOBCSYearlyFields (=.FALSE.) to obcs with exf in
346      analogy to useExfYearlyFields; rearrange obcs_prescribe_read: two new
347      subroutines (which could be generated from a template, because they are
348      almost identical), for now they are included in obcs_prescribe_read.F for
349      simplicity
350    o pkg/exf:
351      - add a little more diagnostic to exf_interp_read (in analogy to
352        mds_read_field, can be turned off with debugLevel < debugLevA=1)
353      - improve vectorizability of exf_interp for TARGET_NEC_SX, makes code
354        ugly but fast by unrolling short inner loops, inserting a unroll=8
355        directive in routine lagran, and splitting a loop and making do while the
356        outermost loop (the latter requires the intoduction of index arrays)
357    o pkg/obcs: replace obcs_apply_area/heff/hsalt/hsnow with obcs_apply_seaice
358    o pkg/seaice: moved DIFFERENT_MULTIPLE from seaice_model to seaice_dynsolver
359      http://forge.csail.mit.edu/pipermail/mitgcm-devel/2008-January/003173.html
360    o verification/seaice_obcs: updated for restart test and latest options
361    o pkg/seaice: add a new flag SEAICEuseTEM to use a slightly different
362      ice rheology (so-called truncated ellipse, that gets rid of tensile stress);
363      for now this is only available for the C-grid code and also within
364      #ifdef SEAICE_ALLOW_TEM, because this option may slow down the EVP code
365    
366    checkpoint59m
367    o pkg/seaice: use different time constant for melting (SEAICE_gamma_t)
368      and freezing (SEAICE_gamma_t_frz) ice due to mixed layer temperature
369    o gad_som : fix flux output (& diagnostics) to have same units as other  
370      advection scheme fluxes (was previously multiplied by deltaT).  
371    o added verification/seaice_obcs both to test seaice open boundaries
372      and to provide an example matlab scrpt for generating them
373    o added verification/lab_sea/input.salt_plume for testing pkg/salt_plume
374    o pkg/salt_plume: clean up salt_plume_frac.F to
375      remove redundancy in PlumeMethod 1 and 4
376    o pkg/kpp: added saltplume diagnostics
377    o pkg/obcs and pkg/seaice:
378      - do not set uice and vice to zero when OB*icefile are unspecified
379      - OBCS_SEAICE_AVOID_CONVERGENCE is undefined by default
380      - moved seaice tracer obcs after call to seaice_growth
381    o pkg/salt_plume: added various options for salt plume depth
382      criterion and for vertical distribution of the salt
383    
384    checkpoint59l
385    o pkg/ptracers: new version of ptracers pickup:
386      read meta file and write only fields which are needed to restart.
387      ( same logic as main pickup file ; also using pickupStrictlyMatch )
388    o pkg/seaice:
389      - add timescale for melting due to warm mixed layer as a means of
390        setting SEAICE_availHeatFrac more conveniently
391      - add a CPP-flag/runtime parameter check for flooding algorithm
392      - reformulated availHeat in seaice_growth.F to be independent of AREA
393    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
394      unit changes
395    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
396    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
397      SX vector computer.
398    o pkg/seaice:
399      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
400        seaice forcing fields can now be read only through pkg/exf
401      - removed some unused halos
402    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
403    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
404      or U/VICE from U/VWIND before computing U/VSTRESS
405    
406    checkpoint59k
407    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
408      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
409    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
410      all experiments pass when compile with un-initialised var. checking option.
411    o added pkg/salt_plume
412    o script to test restart (for now, in MITgcm_contrib/jmc_script)
413    o pkg/seaice: new read/write pickup version.
414      read meta file and write only fields which are needed to restart.
415      ( same logic as main pickup file ; also using pickupStrictlyMatch )
416    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
417    o lab_sea.hb87: modify the domain & update output.hb87.txt :
418      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
419      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
420      process. Fixed here by closing the domain at the Northern boundary.
421    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
422    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
423      a set of consecutive levels in/from a 3-D array.
424    o pkg/ptracers:
425      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
426      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
427    
428    checkpoint59j
429    o in pkgs: dic, obcs, offline, rbcs:
430      standard way to compute coeff. for time interpolation between 2 time reccords
431      which retains full precision (& make results less dependent on compiler).
432      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
433    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
434      packages instead of reading ice cover and wind speed separately
435    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
436     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
437      to allow to compile customized code before the update)
438    o cleaning-up:
439      - fix CPP instruction syntax in pkg/obcs
440      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
441        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
442      - fix some threads issue in IO parts.
443    o pkg/dic:
444      - add tons of "_d 0" (--> much better testreports !)
445       and then update outputs of tutorial_global_oce_biogeo
446    o pkg/mom_fluxform:
447      add a special version of momentum advection intended to conserve momentum
448      next to a bathymetry step or a coastline edge. (default = off = #undef)
449    o new read/write pickup version:
450      - for now, only implemented for main (mdsio) pickup file.
451      - write out only what is needed to restart; merge pickup_nh , pickup_ph
452        and main pickup together.
453      - read meta file; read only what is needed to restart; stop if a field
454        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
455        if it make sense (even if the restart is not perfect).
456      - if no meta file, assume that pickup to read corresponds exactly to
457        a pickup that would currently be written.
458      - read pickup written in the old format (until checkpoint59i) if it
459        recognizes an old meta file (no field-list).
460      - add a meta file in exp. which starts from a pickup: 2 cases:
461        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
462         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
463        b) a meta file describing the content of the associated pickup file
464         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
465    o pkg/mdsio & pkg/rw:
466      - new routine to read a meta file ; new set of routine to read
467        Multiple-fields file (with meta file).
468    o added open boundary conditions capability for seaice
469        HSNOW, HSALT, UICE, and VICE
470    
471    checkpoint59i
472    o adjoint:
473      * fix multiDimAdvection adjoint
474        (partial recomputation problem by TAF for fVerT(:,:,kDown)
475        and comlev1 size definition (maxpass vs. max. number of tracers)
476      * verification/global_ocean.90x45x15 adjoint now tests
477        NLFS and multiDimAdvection using DST3 (=30)
478      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
479    o pkg/kpp: add "_d 0" to real constant (if missing);
480      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
481      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
482    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
483      for internal parameters related to restart process (formerly from PARAMS.h)
484      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
485    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
486      as argument. (only atm2d & obcs write_pickup have not yet been updated)
487    o pkg/monitor:
488      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
489      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
490      - account for deep Atmosphere factor and density factor (anelastic)
491    o added open boundary conditions capability for seaice HEFF and AREA
492    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
493      thermodynamics
494      - requires a little reorganization, which affects the testreport results
495        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
496        so that now the conservative form is tested
497      - add a few comments
498    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
499    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
500    o add new diagnostics to seaice: advective, diffusive fluxes (only for
501      multidim-advection, for scheme 2 they are not filled) and transports,
502      thermodynamic growth rates
503    o change units of EmPmR (inside the code, + within coupling interface)
504      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
505      Affects results @ truncation level (cg2d match) and update output of
506       experiments: lab_sea(6), global_ocean.90x40x15(10),
507      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
508      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
509      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
510      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
511    
512    checkpoint59h
513    o pkg/exf:
514      - improve vectorization by moving if-statement out of loops in
515        exf_mapfields, exf_radiation
516      - exf_bulkformulae.F: introduce 2D fields and vectorize code
517    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
518    o testreport:
519      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
520        monitor & update offline_exf_seaice exp. output.
521      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
522    o pkg/seaice:
523      - bug fix in the evp solver: boundary conditions were affected be
524        masking of zMax/zMin (changes results)
525      - minor bug fix in boundary conditions in seaice_calc_strainrates
526        (changes results for no_slip)
527      - seaice_lsr.F: make interpolation of eta dependent on boundaries
528      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
529      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
530        stress formulation and no-slip boundary conditions
531    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
532      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
533    o pkg/seaice: a first HSALT time stepping equation has been checked in
534    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
535      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
536      without requiring DO-IF statements
537    o pkg/thsice:
538      use continuous power-law function for partition of energy between lateral
539      melting/freezing and thinning/thickening ; old code using step function
540      still available with #undef THSICE_FRACEN_POWERLAW
541      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
542    o testreport: change AD testing : check against results/output_adm.txt
543      using same scripts as for forward test.
544    
545    checkpoint59g
546    o adjoint testing: in preparation for changing testreport:
547      - output format: cost and grad written on separated lines
548      - ad output results in directory "results" (instead of "results_ad")
549    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
550    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
551    o pkg/ecco: allow user defined cost function contributions
552    o testreport:
553      Allow to choose (per experiment) the list of tested output variables
554       and the main variable (used to issue a pass/FAIL ) ;
555      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
556      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
557      Also modify printing of summary:
558       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
559       b) echo the list of tested variables in the individual summary.txt of
560          each experiment.
561    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
562      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
563      (but still depend on the tile decompostion of the domain).
564    o pkg/seaice: change a discretization detail to make the B-grid code
565      "more symmetric". This change is likely to remove all "ridges/leads" that
566      where quasi-aligned with the grid in B-grid solutions. It may also be
567      the solution to the stress coupling issues with the B-grid.
568    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
569      remove .cvsignore from input dir. (since testreport no longer run here).
570    o pkg/thsice:
571     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
572     - fix reshaping of sea-ice just after advection:
573       melt all the ice only if ice-volume is too small.
574     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
575       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
576     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
577    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
578      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
579    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
580      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
581      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
582      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
583      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
584      -> update output.txt
585    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
586     this affects truncation error: -> update output.txt of exp:
587      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
588      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
589    
590    checkpoint59f
591    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
592    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
593      a bounded range (in forward mode)
594    o pkg/ecco, ctrl, autodiff and mom_common:
595     internal parameter controls, completements of implementations
596    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
597    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
598      (not seem any difference in testing results).
599    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
600       at face corners.
601    o pkg/generic_advdiff:
602     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
603      loop range indices for computing vertical advection tendency
604      and do the calculation in the interior only (no overlap) ;
605      for now, only implemented for SOM advection (to save CPU time).
606     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
607    o exch2 adjoint
608      First set of changes:
609      - add exch2 hand-written adjoint templates
610      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
611        This will require cleanup in pkg/autodiff/*.F
612        (changed routines currently kept separate in verif. code/)
613      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
614        that used to hide exch2 or cubed-sphere specific code
615        (commented via 'cph-exch2')
616    o pkg/seaice
617      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
618    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
619       output of global_ocean.cs32x15.thsice .
620    
621    checkpoint59e
622    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
623      for B-grid vector (not yet tested) and C-grid vector (<- only used
624      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
625    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
626      (#ifdef ALLOW_SALT_PLUME)
627    o gather_2d/scatter_2d: removed halo regions
628    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
629      scheme and the corresponding test case (under front_relax dir). For now,
630      only available with Skew-flux form and not yet tested in realistic set-up.
631      adjoint: store directives updated, but gradient checks deteriorated,
632      so maybe GM/Redi adjoint is now broken.
633    o seaice adjoint
634      * add AREA, HEFF, HSNOW as control variable
635        (should not change lab_sea results)
636      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
637    o pkg/seaice:
638      * added computation of saltFlux in seaice_growth;
639        For time being, sea ice salinity is assumed constant
640        contribution of snow flooding to freshening of sea ice is neglected.
641        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
642        defaults to 0.0 in order to maintain backward compatibility.
643        Typical values for SEAICE_salinity are 4 to 10 g/kg.
644      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
645      * added SEAICE_availHeatFrac, which specifies fraction of surface level
646        heat content used to melt or grow ice
647      * commented out cap of HICE: it helps keep ice thinner
648      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
649      * applied OBCS T/S mask to HEFFM sea ice mask
650    
651    checkpoint59d
652    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
653     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
654     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
655    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
656     and change default value of parameter "GM_Small_Number";
657     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
658       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
659       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
660    o pkg/ecco: cost function when applying pkg/smooth to controls
661    o pkg/ctrl: add forcingPrecond run time parameter
662    o pkg/seaice:
663     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
664     - fix bug in metric terms of u-equation in LSR solver (implicit part),
665       changes verification/lab_sea
666     - rearrange implicit part of u-equation in LSR solver to make it easier to
667       read, understand, and debug. This causes changes at the truncation level.
668     - fix (serious) bug in the boundary conditions (sign error in the implicit
669       part) of the LSR solver. Changes all LSR results.
670     - fixed problem with HSNOW initialization to avoid thick snow when AREA
671       is initilized with small values - does not change lab_sea results.
672     - added HsnowFile initialization capability
673    o pkg/smooth: addition to model/src and pkg/ctrl so allow
674     initialization of pkg/smooth and application to control vector
675    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
676    o dependencies: pkg/profiles requires pkg/cal
677    o pkg/profiles:
678     - added option ALLOW_PROFILES_GENERICGRID
679         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
680         that interpolation information (grid points and coefficients) is provided
681         within the netcdf input files.
682         -> sample matlab scripts can be found in MITgcm_contrib/gael
683         that allow you to prepare netcdf input files.
684     - also modified: cleaner include statements, cleaner error print statements,
685       cleaner stops when error, and more tests of the netcdf input files consistency.
686    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
687    o pkg/seaice:
688     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
689       requires a new routine: seaice_diagnostics_fill.F
690     - make sure that seaice does not move if not forced (pressure replacement
691       method, Hibler and Ip, 1995), changes results
692     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
693     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
694       It is turned off by default (=-1.), because it changes the results.
695     - make it possible to read AREA from a file, too.
696    
697    checkpoint59c
698    o add S/R and diagnostics for oceanic mixed-layer depth
699    o move GMRedi call after all vertical mixing schemes (including KPP)
700    o pkg/thsice:
701     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
702      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
703    o pkg/obcs:
704     - bug fix for balance code
705    o pkg/seaice:
706      - allow values of SEAICE_elasticParm > 1
707      - add new parameter SEAICE_evpTauRelax as an alternative
708        to SEAICE_elasticParm
709      - make lsr boundary conditions free slip (by default), changes result
710      - add code for no slip boundary conditions for lsr
711      - set minimum of zeta to zero (and not 4e8) (changes results)
712      - add a cap on AREA after advecting AREA if seaice_growth is not called
713    o change calculation of Visbeck K:
714      - no longer depend on tapering scheme; instead, compute slope (limited
715        by GM_maxSlope). this is equivalent to what was comuted before with
716        clipping or linear tappering.
717      - fix vertical averaging (wrong by 1/2 level)
718      - leave the old version (but will not be maintained) within
719        #ifdef OLD_VISBECK_CALC / #endif
720      - update output of exp. ideal_2D_oce
721    o change error catch in calc_r_star to improve vectorization
722    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
723      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
724    o adjoint:
725      Re-organized adjoint checkpointing according to Matt Mazloff
726      (but with modifs/completions/cleanups)
727      Storing is now bundled into large arrays to optimized I/O
728      (and second step in cleanup of the_main_loop)
729    
730    checkpoint59b
731    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
732      - export/import (between ocean & coupler) fields needed for ocean DIC.
733    o pkg/seaice:
734      - get rid of three more exchanges seaice_calc_viscosities (required
735        different loop boundaries in seaice_lsr and seaice_ocean_stress)
736      - bug fix in seaice_ocean_stress (update of lab_sea required)
737      - reduce loop boundaries to necessary minimum also in seaice_evp
738      - go back to the old way of computing deltaC/Z as the adjoint likes that
739        better
740    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
741      passive tracer to an Age Tracer) + update output.txt
742    o pkg/exf:
743      - implement A-grid / C-grid selection for wind-stress input files.
744      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
745      for now, in exf_bulk_largeyeager04.F only :
746      - change implementation for case where windspeed + 2. components wind-stress
747        are read-in. AND use rhoConstFresh to convert evap.
748    o pkg/seaice:
749      - use correct EXCH_UV for wind-forcing (on A-grid).
750      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
751        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
752    o pkg/exf:
753      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
754      EXF_INTERPOLATION:
755      - merge global_with_exf/code version of exf_interp_read.F
756        to the main code ;
757      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
758        reading the file ; Important: This options needs to be defined to recover
759        previous code.
760        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
761      - no longer loose real*8 precision along the way when using exf_iprec=64.
762    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
763      - change discretisation of evp-solver in order to avoid another exchange
764        (changes lab_sea) and clean up a little
765      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
766        help the adjoint (this also changes the results slightly)
767      - add a few "_d 0" where they had been missing in seaice_evp.F
768      - cleaning up: remove unused seaice_calc_rhs.F
769    o pkg/exf: some cleaning-up:
770      - change various "constants" into runtime parameters
771      - cleaned-up Large&Yeager04 routine which should eventually
772        replace exf_bulkformulae.F (changed names of S/R and CPP)
773        and merged various ALLOW_ATM_WIND options
774     only used with thsice pkg (in thsice_get_exf.F):
775      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
776        which are used when useStabilityFct_overIce=TRUE (= the default)
777      - change default values of ice & snow emissivity and scale downward LW
778        by ice & snow emissivity.
779    o pkg/thsice:
780     fix few little problems, in thsice_calc_thickn.F:
781      - growth vertically (and not laterally) if iceFrac == iceMaskMax
782      - melt only laterally if hIce < hThinIce (as the comments say)
783      and in thsice_extend.F:
784      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
785      - start to form ice as soon as the minimum ice-volume is reachable.
786     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
787      and cpl_aim+ocn
788    o pkg/kpp
789     - move computation of surface related input fields to KPP into a new
790       subroutine kpp_forcing_surf.F
791     - remove wrong (within bi,bj loops) EXCH calls.
792     - little cleaning (add argument myThid in last position, cvs header ...)
793     - for now, fix conservation problem by exchanging KPPviscAz (may not
794       be the best fix)
795    o pkg/seaice
796     - check for inconsistent evp parameter/cpp-flag combination
797     - remove leftover errIO flat for obsolete name list error handling
798    o OpenAD
799     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
800    
801    checkpoint59a
802    o pkg/seaice: some parameter clarifications and a little bit of clean up
803    o pkg/thsice: rename run-time parameters:
804       himin       -> hIceMin
805       himin0      -> hThinIce
806       hihig       -> hThickIce
807       i0          -> i0swFrac
808       transCoef   -> bMeltCoef
809       frac_energy -> fracMelting
810      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
811       with default values (for now) that do not change the results.
812      remove old version of thsice vars advection in pkg/seaice.
813    o in FFIELDS.h:
814      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
815      - make pLoad & sIceLoad always available (but still only used if
816         ATMOSPHERIC_LOADING is #define).
817    o pkg/kpp: replaced _KPP_RL with _RL
818    o bug fixes for vertical diffusivity computations when both KPP and
819        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
820        are no longer updating the vertical diffusivity array
821        (passed as argument) but are (re-) setting those arrays.
822    o pkg/seaice: fix bug in evp solver, while doing that
823      - change (improve?) discretization of stress computations for both
824        cgrid-lsr and evp solver
825      - add a new routine to compute strain rates
826      - the above changes lab_sea results
827      - add no slip conditions for evp solver (off by default), lsr-version
828        may follow
829      - fix exchange for shear at Z-points (does not change lab_sea)
830      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
831        (to force the user to pick a time step since there is not "safe" way
832        of choosing it)
833      - add principal stress diagnostics
834      - rearrange fields for evp a little to avoid having to call a: too many
835        exchanges and b: exchanges for stress trensor components which we do
836        not have.
837      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
838        of evp, complete rewrite for lsr case (latter is does not yet work
839        in all cases)
840    o pkg/kpp: add code to have mixing in shelf ice caverns
841      - add myThid to all kpp routines (long overdue)
842    
843    checkpoint59
844    o pkg/exf:
845      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
846        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
847      - move exf header files from lower_case.h to UPPER_CASE.h ;
848        add missing cvs Header & Name
849      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
850      - add namelist param. selectStressGridPosition, exf_monFreq
851      - retire many _CLIM routines, and remove data.exf_clim
852        + params moved to data.exf
853        + climsst, climsss now handled by exf_set_gen, i.e.
854          climss?period=0 refers to constant field,
855          climss?period=-12 to monthly forcing
856      - split up namelists in data.exf
857    o pkg/seaice:
858      - remove seaice_exch and seaice_exch_uv
859      - remove superfluous exchange of theta
860      - add myThid to seaice_budget_ocean/ice
861      - add new interface for atmospheric wind forcing (C-grid only)
862        + new routine
863        + two new field (taux, tauy for stress over ice)
864        + removed one global field (DAIRN) for C-grid case only
865    o pkg/thsise
866      - 2nd set of modifs for thsice adjoint in conjunction with exf
867    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
868    
869    checkpoint58y_post
870    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
871      vertical diffusivity, similar to that in MOM4; turned on using
872      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
873      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
874    o Added capability for 3D specification of background vertical diffusion
875      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
876      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
877      "data" file that contains the 3D vertical diffusivity coefficients.
878    o ice dynamics (pkg/seaice) with thsice thermodynamics:
879      - add code within pkg thsice to advect & diffuse sea-ice fields
880      similar to (and will replace) what has been added in  seaice_advdiff.F,
881      but: - conserving Mass, Heat & Salt.
882           - better when using non-linear advection scheme (not yet fully tested)
883           - can also be used in atmospheric set-up (for now, only the diffusion).
884    
885    checkpoint58x_post
886    o IO option for global-file compact format:
887      - add options when generating topology (utils/exch2/matlab-topology-generator)
888      - add I/O capability (pkg/mdsio).
889      - adapt utils/matlab/rdmds.m to read this format.
890      for now long-line format not yet supported by pkg/mdsio (& exch2).
891    o shelfice: add a few diagnostics
892    
893    checkpoint58w_post
894    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
895      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
896      (and replace horiVertRatio in NH code).
897      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
898                         and tutorial_plume_on_slope (sensitive to truncation)
899    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
900      directly to drive seaice model (C-grid only)
901    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
902     - reintroduce computation of wind from stress,
903     - compute tau (in exf_bulkformulae.F) from windstress averaged to
904       mass points to avoid tau = 0
905     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
906    o rdmnc.m: make it work with "global" files created with gluemnc
907    o rdmnc.m : some improvements in dealing with singleton dimension
908      (tested on all testreport mnc output files).
909    o genmake2: disable pkg/profiles if netcdf test fails.
910    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
911    o move call to cal_readparms up to make calendar parameters/variable available
912      to all packages
913    
914    checkpoint58v_post
915    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
916      useDynP_inEos_Zc tested.
917    o pkg/exf: changes to properly interpolate/mask/scale initial fields
918    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
919      and portions thereof.  See read_cs.txt for description and examples.
920    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
921      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
922      following the great-circle arc between those 2 points.
923    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
924      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
925    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
926     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
927     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
928     - still needs work (not working with some options ; efficiency to improve)
929       and serious testing.
930     - use this scheme for temperature & salinity in 2 advection test exp.:
931       advect_xy & advect_xz, respectively.
932    
933    checkpoint58u_post
934    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
935    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
936    o testreport: add option "-skipdir" to skip some test.
937    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
938      momentum calculation.
939    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
940    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
941      remove checkpoint.F and the_correction_step.F (no longer used);
942      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
943    o add option (linFSConserveTr) to correct for tracer source/sink due to
944      Linear Free surface
945    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
946    o pkg/thsice: fix reading mnc-pickups
947    
948    checkpoint58t_post
949    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
950    o pkg/mdsio:
951     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
952       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
953       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
954     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
955     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
956       either MDS_READ_FIELD or MDS_WRITE_FIELD )
957     - new S/R (to replace MDSWRITEMETA), which allows to write more
958       informations (variable names, time ...) to meta files.
959     - modify rdmds.m to give back the meta file content.
960    o pkg/diagnostics: change vertical interpolation to be safer, and more
961       flexible (define p-levels to interpolate to in data.diagnostics);
962      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
963       diagnostic pointer.
964    o pkg/seaice: more cleaning up of seaice_growth, added many comments
965    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
966    o fix multi-category seaice:
967     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
968       SEAICE_MULTICATEGORY
969     - fix short wave heat flux
970    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
971       and allow to use EVP solver. Change forward lab_sea: test both EVP
972       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
973    o Initial check-in of lab_sea adjoint
974      (very similar to natl_box_adjoint/code_seaice)
975      * used C-grid and EVP solver
976      * used KPP, GM/Redi
977      * uses inAdExact=.TRUE.
978      * gradient checks fail for both ADM and TLM
979        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
980        f.d. gradients actually seem more problematic than ADM, TLM gradients;
981        issue is related to forward mismatch between g77 an ifort
982    o pkg/seaice: overhaul of thermodynamics
983     - growth.F and groatb.F are replaced by new routine seaice_growth.F
984     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
985     - move a few global fields out of SEAICE.h into seaice_growth.F and
986       make them 2D (FICE/QNETO/ ...)
987     - remove FO (it is the same as QNETO)
988     - introduce a few local fields to avoid modifying external fields such
989       as atemp, etc.
990    
991    checkpoint58s_post
992    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
993      changed exf_set_gen.F so that
994        genperiod=0 means input file is one time-constant field and
995        genperiod=-12 means input file contains 12 monthly means
996    o CG2D: use pre-computed solver main-diagonal (stored in common block);
997      this affects truncation error ; generate new output file for exp. which
998      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
999        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
1000        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
1001        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
1002        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
1003        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
1004    o start implementation of deep-atmosphere and anelastic formulation
1005  o verification: remove 2nd copy of input files and use script "prepare_run"  o verification: remove 2nd copy of input files and use script "prepare_run"
1006    to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)    to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
1007  o mom_common/vecinv/fluxform: fix a few initialisation isssues  o mom_common/vecinv/fluxform: fix a few initialisation isssues

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