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revision 1.749 by mlosch, Thu Nov 23 10:03:44 2006 UTC revision 1.1059 by jmc, Sun Feb 1 22:37:40 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     - replace FLT_INIT by 3-steps standard initialization S/R: readparms,
9       init_fixed & ini_varia.
10     - clean-up & simplify linear interpolation S/R:
11       move flt_bilinear.F -> flt_interp_linear.F ; add arg. myThid.
12     - fix some indices (mainly vertical index) ; add IMPLICIT NONE.
13    o pkg/ggl90: a few modifications:
14     - fix bottom boundary condition, and interpolation of KappaE
15       near top and bottom
16     - use same set of viscosity/diffusivity for TKE/momnetum/tracer
17     - add smoothing option as in Blanke and Delecluse (1993) (--> ALLOW_GGL90_SMOOTH)
18     - add a few options for mixing-length upper limit (--> mxlMaxFlag)  
19    o rename thetaMin,phiMin -> xgOrigin,ygOrigin
20      (maintain temporary backward compatibility, until next checkpoint)
21    
22    checkpoint61h
23    o pkg/diagnostics with "periodic averaging diagnostics":
24      fix S/R DIAGNOSTICS_COUNT ; hack diagnostics_out.F to get NetCDF output.
25    o pkg/my82: add missing "_d 0" ; update output of exp. vermix.my82
26    o pkg/obcs: fix loop ranges for balancing code
27    o pkg/flt:
28     - improve criteria for finding which tile owns a float.
29     - fix FLT_EXCH for case without MPI ; apply cyclic BC + fix also the MPI case.
30    o Add well-mixed CO2 box in aim_v23 (which includes changes in pkg
31      aim_compon_interf, ocn_compon_interf, gchem, and dic to get coupling
32      with ocean biogeo)
33    o pkg/flt:
34     - do some cleaning and fix the restart ;
35     - add output.txt in flt_example/results to get this pkg tested.
36    o genmake2: add an EXTENDED_SRC option and flag.
37       for now, cannot be turned on on command line (only through genmake_local)
38    o pkg/mdsio: read/write vector:
39     - singleCpuIO: fix RL/RS in MDSWRITEVECTOR by calling new S/R MDS_BUFFERtoRL/RS
40     - singleCpuIO=F: fix arrType & filePrec & _BYTESWAPIO in both MDSREADVECTOR
41       & MDSWRITEVECTOR by calling new S/R MDS_RD/WR_VEC_RL/RS.
42     - affects gradient of test-exp "bottom_ctrl_5x5" (not due to _BYTESWAPIO)
43      (drop to 4 digits matching for grad). But this test does not look very
44      reliable (was already failling on eddy, fc5, at 6.digits). Update output.
45    
46    checkpoint61g
47    o pkg/flt:
48      - move FLT_CPPOPTIONS.h to FLT_OPTIONS.h (standard name)
49       + make OPTIONS file more standard.
50      - rename S/R MDSREADVECTOR_FLT to FLT_MDSREADVECTOR (to mach src file name)
51      - fix _BYTESWAPIO CPP-Flag
52      - standard reading of file-parameter "data.flt"
53      - fix argument list of S/R FLT_RESTART
54      still need to fix _BYTESWAPIO in pkg/mdsio/mdsio_writevector.F
55    o pkg/obcs: fix a CPP-flag, bug reported by Jeff Blundell
56    o gather_2d.F/scatter_2d.F: suppress vectorisation on NEC SX in respond to
57      a still unfixed compiler/optimization bug
58    
59    checkpoint61f
60    o pkg/seaice, LSR solver: fix bug in GLOBAL_MAX calls ;
61      update results of global_ocean.cs32x15.icedyn test.
62    o move getcon.F from model/src to pkg/fizhi.
63    o pkg/exf: add parameter for extrapolation of temp up to the surface
64       and option to prevent negative evap (in bulk_largeyeager04 only).
65    o Prather Advection scheme: fix tracer conservation for divergent flow
66      (e.g., when using NonLin Free-Surface).
67    o kpp: retire KPPmld diagnostics --> use MXLDEPTH instead
68    o gmredi (Visbeck-variable-K):
69     - add more parameters to Visbeck-variable-K.
70     - use a 5 points average for dSigmaR in Visbeck-K calculation
71       (more "homogenous": same stencil and same weights as in dSigmaH)
72     - update output of ideal_2D_oce experiment.
73    o fix CPP-flag REAL4_IS_SLOW, when _RS expands into real*4
74      (#undef REAL4_IS_SLOW)
75     - pkg/mnc/mnc_cw_cvars.F: write _RS-grid variable as netcdf-real*4
76       coordinate variable
77     - pkg/monitor/monitor.F: call mon_printstats_rs for _RS variables
78       (surface forcing fields), removes some of the functionality
79     - model/src/write_grid.F: write _RS variables as RS-netcdf variables
80     - model/src/diags_oceanic_surf_flux.F: fix a few diagnostics, but
81       probably not all: copy _RS surface flux fields to RL field before
82       calling DIAGNOSTICS_FILL
83     - model/inc/CPP_EEMACROS.h: make the _EXCH_*_RS macros expand into
84       real*4 (CALL EXCH_*_RS) versions.
85     - tested in 2 experiments: inverted_barometer & solid-body.cs-32x32x1
86       (generate new output).
87    
88    checkpoint61e
89    o gmredi (Visbeck-variable-K):
90      - fix the "OLD_VISBECK_CALC" option + move the #undef to GMREDI_OPTIONS.h
91      - change computation of Visbeck-K where Slope > Smax :        
92        now: N*min(Slope,Smax) (similar to OLD_VISBECK_CALC with gkw91 taperFct)
93        previously was: M*sqrt(min(Slope,Smax)) ; update ideal_2D_oce output.
94    o bottom-drag in P-coord.: change units of bottomDragLinear & bottomDragQuadratic
95      to be the same as with Z-coord. (i.e., m/s & no-units respectively).
96    o calc_viscosity: fix index range (was wrong for CD-Scheme & explicit Visc)
97    o pkg gmredi, linear & fm07 tapering: put an upper limit on Slope^2 so that Kwz
98      does not become too large (to avoid precision problems in implicit-diffusion
99      solver); update ideal_2D_oce output.
100    o pkg ggl90:
101      - in ggl90_cal.F: compute only one set of visc/diff, used to
102        step forward TKE/T/S/momentum
103      - default value of GGL90viscMax/GGL90diffMax larger and equal (to
104        have Prandlt =1)
105    o gmredi (fm07):
106      - add lower limit on Transition layer thickness + lower limit on 1/lambda
107      - allow to set few more params from data.gmredi
108    o pkg ggl90:
109          - add missing sqrt(2) factor in computation of mixing length
110            scale in ggl90_calc.F
111            (see Eq. (2.35) in Blanke and Delecluse, JPO, 1993)
112    
113    checkpoint61d
114    o adjoint modifs
115      - adapt to new field rhoInSitu
116      - allow to revert from StoreDynVars2D, StoreDynVars3D
117        to individual fields
118        (switches AUTODIFF_USE_OLDSTORE_2D, AUTODIFF_USE_OLDSTORE_3D)
119    o store 3-D (in-situ) density in commom block (DYNVARS.h)
120     - save 1 rho computation.
121     - no longer modify T & S inland when using down_slope pkg.
122    o gad_som : allow to switch to SOM advection for T & S without corresponding
123      pickup files (using new S/R: MDS_CHECK4FILE).
124    o keep removing _BEGIN/_END_MASTER between MDSIO S/R call
125      (for useSingleCpuIO to work in multi-threaded)
126    o pkg/shelfice:
127     - disentangle parameters: retire shelfIceFile in data/PARM05 and substitute
128       with SHELFICEtopoFile in data.shelfice
129     - move code for reading ice shelf topography and modifying hFacC into separate
130       subroutines of the shelfice package
131     - separate initialisation of "fixed" and "variable" variables
132     - kTopC is not (yet) replaced by kSurfC, although this is possible
133    o fix broken diagnostic SIatmFW and changed the units from m/s to kg/m^2/s
134    o add initialisation of deepFac if using Pcoords (new S/R set_grid_factors)
135      and rename:
136      ini_phiref.F          --> set_ref_state.F  (+ set anelastic factors)
137      ini_reference_state.F --> load_ref_files.F (- set anelastic factors)
138    o change FIND_RHO_SCALAR : return rho (instead of rho - rhoConst)
139    
140    checkpoint61c
141    o add option ALLOW_ADDFLUID and run-time selector "selectAddFluid"
142      to add mass source/sink of fluid in the interior (3-D generalisation
143      of oceanic real-fresh water flux).
144    o pkg/monitor: fix recip_dr argument in mon_advcflw2 call (-> advcfl_W_hf_max)
145    o vermix test experiment: switch from LINEAR EOS to MDJWF (not tested before)
146    o new pkg: down_slope
147      density-driven downsloping flow parameterisation (Tellus, 1999, 412-430).
148      - presently, modify T & S inland (dwnslp_calc_rho.F).
149        can be avoided if rho was stored in common bloc and used in calc_phi_hyd.
150      - implementation for ocean in P-coords not tested.
151      - add secondary test to global_ocean.90x40x15 (input.dwnslp) to check this pkg.
152    o move kSurfC,kSurfW & kSurfS from SURFACE.h to GRID.h (next to kLowC)
153      (to facilitate conversion of oceanic pkg to p-coordinate).
154    o change FIND_RHO to FIND_RHO_2D :
155      pass arguments tFld & sFld as local (tile) 2D-arrays ; +fix EOS_CHECK.
156    o new pkg: cheapaml
157    
158    checkpoint61b
159    o exch2:
160      change index bounds in rx2_cube exchanges (new S/R: EXCH2_GET_UV_BOUNDS)
161      - no longer depend on the order sequence (N,S,E,W).
162      - 3rd exchange no longer needed (tested with 24 tiles).
163      - same modif to hand-written adjoint S/R (global_ocean.cs32x15: zero diff)
164      - exch_UV_A-grid readily available (but not yet tested).
165      comment out 3rd exch call and remove copy of V to U at SE & NE face-corners
166      (both are no longer needed) in exch_uv: no effect in forward run; but
167       get truncation error differences with adjoint exch.
168    o exch2:
169     - change index-bounds storage (moved from target to local tile,
170       more intuitive this way) ; rename/remove some variables.
171     - change utils/exch2/matlab-topology-generator & code_mods accordingly.
172    
173    checkpoint61a
174    o exch2/matlab-topology-generator:
175      fix bug in index bounds for N-S internal exchange (hard to tell if this
176      had any effect on the solution).
177    o pkg/mnc: small fix in mnc_handle_err: make sure that length of msgbuf
178      is exceeded
179    o testreport: modify syntax of awk, so that it works also with
180      awk, and not only with nawk and gawk
181    
182    checkpoint61
183    o autodiff
184      Change default for TAF usage by removing argument '-nonew_arg'
185      This changes TAF subroutine argument list (ordering of active var.)
186      Omission of this flag leads to incompatibility w.r.t. TAMC
187      To restore TAMC-compatibility, need following modifs:
188      * use adoptfile tools/adjoint_options/adjoint_tamc_compatibility
189      * use CPP option #define AUTODIFF_TAMC_COMPATIBILITY
190      Tested TAF version is 1.9.22
191      N.B.: exch2 hand-written adjoint code currently not TAMC compatible
192    
193    checkpoint60
194    --->>> This is the last checkpoint for which generating the adjoint
195    --->>> is done via the TAMC-compatibility TAF-flag "-nonewarg"
196    --->>> by default.
197    --->>> Future checkpoints will ommit this flag by default.
198    o pkg/generic_advdiff, os7mp: simplify and avoid division by zero.
199    o pkg/grdchk: Add gradient check to etan0 perturbations.
200    o pkg/exf: read ice area from file (#ifdef ALLOW_ICE_AREAMASK).
201    o pkg/autodiff: more flexibility in zeroadj.
202      model/src: modifying do_oceanic_phys.F accordingly.
203    o pkg/ctrl: Bounds for (kapgm,kapredi,eddypsi) parameter estimation.
204    o model/src and pkg/gmredi: GMREDI_WITH_STABLE_ADJOINT CPP option
205      special setup of gmredi for which the adjoint is stable
206      enough for parameter optimization.
207    o bridging the gap between eddy stress and GM.
208      -> eddyTau is replaced with eddyPsi (eddyTau = f x rho0 x eddyPsi)
209          along with a change in CPP option (now ALLOW_EDDYPSI).
210      -> when using GM w/ GM_AdvForm:
211          The total eddy streamfunction (Psi = eddyPsi + K x Slope)
212          is applied either in the tracer Eq. or in momentum Eq.
213          depending on data.gmredi (intro. GM_InMomAsStress).
214      -> ALLOW_EDDYPSI_CONTROL for estimation purpose.
215      The key modifications are in model/src/taueddy_external_forcing.F
216      pkg/gmredi/gmredi_calc_*F pkg/gmredi/gmredi_*transport.F
217    
218    checkpoint59r
219    o new S/R (pkg/mdsio/mdsio_facef_read.F) reading of sNx+1 x sNy+1 array
220      from per-face file (take S/R READSYMTILE_RS out of ini_curvilinear_grid.F);
221      fix option to read coriolis(@ cell-corner) from files with CS-grid.
222    o pkg/mnc: add some attributes to standard 1D-coordinate variables
223    o pkg/diagnostics: enforce missing_value attribute for scalar variables at
224      mass points, when using mnc for output
225      - add runtime parameter (missing_value, missing_value_int) to override
226        default (which is the value of getcon('UNDEF'))
227    o pkg/mnc: prepare mnc for the actual use of missing values with the
228      diagnostics package: small fix in mnc_cw_readwrite.template and more
229      initialisation of never used fields
230      - replace mnc_common.h and mnc_id_header.h with corresponding upper case
231      versions
232    o pkg/thsice/thsice_ini_vars.F added default initial values so that
233      thermodynamics sea ice solver does not blow up when some initial fields
234      are missing.
235    o move from external_forcing_surf.F to ini_forcing.F
236      the p-coord. hack consisting in using pLoad to set phi0surf ;
237      update output of tutorial_global_oce_in_p (affected @ truncation level).
238    o Freshen up a bit hs94.1x64x5, notably:
239      remove rotationPeriod and tRef=5*0. (adjoint only), and add
240      exactConserv=.TRUE.
241    o pkg/generic_advdiff:
242      change option GAD_ALLOW_SOM_ADVECT to GAD_ALLOW_TS_SOM_ADV which only
243      applies to files where Temperature & Salinity 2nd Order moments are used.
244    o pkg/ptracers: add second-order moment advection schemes (80 and 81);
245      this uses a dynamically allocated internal state data structure
246      (#define PTRACERS_ALLOW_DYN_STATE in PTRACERS_OPTIONS.h)
247      and requires a fortran 90 compiler
248    
249    checkpoint59q
250    o pkg/mom_vecinv: Add energy & enstrophy conserving scheme (selectVortScheme=3)
251       (from Sadourny, described by Burridge & Haseler, ECMWF Rep.4, 1977)
252    o Refresh tutorial_global_oce_biogeo, notably:
253      - change bathymetry (put back seamounts in ACC, use hFacs)
254      - change EOS (POLY3 --> JMD95Z)
255      - use Bryan-Lewis vertical diffusivity
256      - use multidimensional advection
257      - remove old virtual virtual in dic pkg, now done through ptracer pkg
258      - change a couple of parameters in dic pkg
259    o pkg/ctrl: change formula in adctrl_bound.F and add a parameter to ctrl_map_ini_gen.F
260    o pkg/obcs: change default to OBCSfixTopo = .true.,
261      - set OBCSfixTopo=.false. in exp4/input/data.obcs to reproduce old result
262      - replace "debugMode" with "debugLevel .GE. debLevB"
263    o implementation of TAF directives for gchem,cfc,dic
264    o remove "exp5" (replaced by tutorial_deep_convection).
265    o pkg/obcs: add code to fix topography gradients normal to open boundaries;
266      this requires computing the index fields OB_Jn/Js/Ie/Iw in obcs_readparms;
267      the code can be turned on by setting OBCSfixTopo = .true. in data.obcs
268      --> changes results in exp4, seaice_obcs
269    o tutorial_deep_convection :
270      update the set-up and increase resolution and domain size ; start
271      from pseudo initial conditions = output at t=120mn in order to see
272      something happening when running testreport.
273    o pkg/seaice: add os7mp as an advection scheme
274                  add check for advection schemes
275                  add a flag for restoring T and S underneath sea ice
276    o pkg/my82: add netcdf-support and diagnostics
277    o thsice pkg:
278      - Now hsMax limits snow height by turning it into ice following
279        flooding scheme (and now conserving energy)
280      - Slight rewriting of the formula in thsice_calc_thick.F
281      - Parameter rhowi eliminated to be replaced by floodFac = (rhosw-rhoi)/rhos
282      --> changes results of global_ocean.cs32x15.icedyn and global_ocean.cs32x15.thsice
283    
284    checkpoint59p
285    o gchem / dic / cfc :
286      - add useDIC, useCFC , read from "data.gchem" (& hold in GCHEM.h);
287      - add new parameter files: "data.dic" & "data.cfc" ;
288      - various re-arrangement in initialisation & header file ;
289      - fix tutorial_global_oce_biogeo for multi-threaded test.
290    o pkg/dic: test for "pickup_dic" file when restarting ;
291      if no pickup-file, can restart with a re-initialised pH (same as it did
292      before) providing pickupStrictlyMatch is set to False.
293    o change argument list of S/R PTRACERS_WRITE_PICKUP & MYPACKAGE_WRITE_PICKUP
294      + fix call to S/R GGL90_WRITE_PICKUP & DIC_WRITE_PICKUP
295    o add a "warning" (to Error msg file) when an Active Tracer is not using AB-2
296      and staggerTimeStep is off (needed for stability of Internal-wave dynamics).
297    o move out of PARAMS.h & data the last pieces of old-ptracer code: tauTr1ClimRelax,
298     & lambdaTr1ClimRelax ; put those 2 params in PTRACERS_PARAMS.h & data.ptracers
299       (note: not clear to me what lambdaTr1ClimRelax is still used for ...)
300    o pkg/mom_vecinv: - new parameter "selectVortScheme" to select which
301       scheme to use for vorticty-term ;
302     - compute upwindVorticity=T case within mom_vi_u/v_coriolis_c4.F
303       (with default selectVortScheme, return to original discretisation)
304     - remove weird combination (e.g.: upwindVorticity & highOrderVorticity)
305    o pkg/seaice: add a line to the summary to indicate grid type (B/C)
306    o in mom_calc_visc, fix average value of viscAh_W & viscA4_W next to the
307      bottom ; only used with variable horizontal viscosity and non-hydrostatic.
308      also fix diagnostics VISCAHW & VISCA4W.
309    
310    checkpoint59o
311    o dome/code/obcs_calc.F: avoid division by zero (detected using gfortran).
312    o change the loop ordering in most gad_*_adv_x.F to improve vectorization:
313      move a few statemens out the main loop into separate loops
314    o pkg/shelfice:
315      - sort out freshwater flux; convert freshwater fluxes to mass fluxes
316        (kg/m^2/s), does not break tests, because in verification/isomip,
317        rhoConstFresh=rhoConst (by accident)
318      - rearrange computation of tLoc, sLoc, pLoc to make code more efficient
319      - move S/R find_rho_scalar, pkg/ecco/sw_ptmp.F, pkg/ecco/sw_adtg.F into
320        new file model/src/seawater.F, so that they are available for all pkgs.
321      - convert potential temperature into in-situ temperature. This changes the
322        isomip tests => update tests
323    o add a flag writePickupAtEnd (default=true) to be able to suppress
324      writing a pickup at the last timestep
325    o tools/mpack-1.6 :
326      - disable automake (not working) and autoconf (not needed).
327      - update to version 1.6.4 which fix MD5 code on some 64 bits platforms
328        also cleaner with much less compilation warnings.
329    o pkg/profiles:
330      rename profiles_interp_mean_genericgrid as profiles_interp_mean_gg
331      (for "less than 32 characters name" compiler requirement)
332    o pkg/obcs and pkg/exf: added capability to specify seaice open boundary
333      conditions that have a different sampling frequency than S/T/U/V obcs
334    o pkg/diagnostics (stats-diags):
335      - fix global Min/Max in case 1 processor get only empty tiles
336    o genmake2: replace (4 times)
337         make genmake_tc_1.o >> genmake_warnings 2>&1
338      with
339         COMM="$CC $CFLAGS -c genmake_tc_1.c"
340         echo $COMM >> genmake_warnings
341         $COMM >> genmake_warnings 2>&1
342      to make genmake2 always see the value of CC as specified in the optfile.
343    o generic_advdiff: - prather advection scheme (SOM) coded for CS-grid.
344      - add diagnostics for 1srt & 2nd Order moments and sub-grid variance.
345      - modify verification advect_cs test to test SOM-advection on CS-grid.
346    o pkg/ctrl:
347      - Rewrite of ctrl_map_ini_ecco.F,
348        introducing a generic routine (ctrl_map_ini_gen.F).
349      - Modification of ctrl_bound/adctrl_bound handling control vector bounds.
350    
351    checkpoint59n
352    o pkg/diagnostics: for large number of diagnostics, store diagnostic mate
353      number in dedicate array "hdiag":
354      - new version of S/R DIAGNOSTICS_ADD2LIST : DIAGNOSTICS_ADDTOLIST
355        with 1 more argument (mate number); modify old version DIAGNOSTICS_ADD2LIST.
356      - many small changes (integer format) for large number of diagnostics
357      - start to use DIAGNOSTICS_ADDTOLIST (necessary for diagnostics with
358        a counter mate) in pkg diagnostics, ptracers, thsice & aim_v23.
359    o add parameter rotateGrid and Euler angles EulerPhi/Theta/Psi. For
360      usingSphericalGrid, this allows to define the rotated grid coordinates
361      via phiMin/thetaMin/dxSpacing/dySpacing, etc., but then re-compute the
362      geographical coordinates according to the inverse of the rotation defined
363      by the Euler angles, so that Coriolis parameter and online-interpolation by
364      exf works with the geographical coordinates on XC/YC/XG/YG.
365      Naturally, this feature does not work with all packages, so some
366      combinations are prohibited in config_summary (flt, flt_zonal, ecco,
367      profiles), because there the coordinates are assumed to be regular
368      spherical grid coordinates.
369    o pkg/gmredi,ctrl,ecco,autodiff,grdchk and model/src,inc:
370      - introduce isopycnal diffusion coefficient control.
371    o tools/adjoint_options:
372      - additional control vector components.
373    o pkg/mnc: have mnc create marginally meaning full coordinate variables
374      (that is the grid indices) if usingCurvilinearGrid and NOT EXCH2
375    o pkg/mypackage:
376      - add example of read/write pickup for state-var ;
377      - add entry points to the main code for state-vars diags & write-pickup.
378    o pkg/exf: rewrite of exf_getffieldrec.F to properly deal with year
379      transitions for useExfYearlyFields
380      - add new subroutine that determines the file to read from for
381        use*YearlyFields = .TRUE. and .FALSE.
382      - add a verification experiment to global_with_exf that tests
383        useExfYearlyFields with USE_EXF_INTERPOLATION defined
384    o pkg/obcs/exf: add useOBCSYearlyFields (=.FALSE.) to obcs with exf in
385      analogy to useExfYearlyFields; rearrange obcs_prescribe_read: two new
386      subroutines (which could be generated from a template, because they are
387      almost identical), for now they are included in obcs_prescribe_read.F for
388      simplicity
389    o pkg/exf:
390      - add a little more diagnostic to exf_interp_read (in analogy to
391        mds_read_field, can be turned off with debugLevel < debugLevA=1)
392      - improve vectorizability of exf_interp for TARGET_NEC_SX, makes code
393        ugly but fast by unrolling short inner loops, inserting a unroll=8
394        directive in routine lagran, and splitting a loop and making do while the
395        outermost loop (the latter requires the intoduction of index arrays)
396    o pkg/obcs: replace obcs_apply_area/heff/hsalt/hsnow with obcs_apply_seaice
397    o pkg/seaice: moved DIFFERENT_MULTIPLE from seaice_model to seaice_dynsolver
398      http://forge.csail.mit.edu/pipermail/mitgcm-devel/2008-January/003173.html
399    o verification/seaice_obcs: updated for restart test and latest options
400    o pkg/seaice: add a new flag SEAICEuseTEM to use a slightly different
401      ice rheology (so-called truncated ellipse, that gets rid of tensile stress);
402      for now this is only available for the C-grid code and also within
403      #ifdef SEAICE_ALLOW_TEM, because this option may slow down the EVP code
404    
405    checkpoint59m
406    o pkg/seaice: use different time constant for melting (SEAICE_gamma_t)
407      and freezing (SEAICE_gamma_t_frz) ice due to mixed layer temperature
408    o gad_som : fix flux output (& diagnostics) to have same units as other  
409      advection scheme fluxes (was previously multiplied by deltaT).  
410    o added verification/seaice_obcs both to test seaice open boundaries
411      and to provide an example matlab scrpt for generating them
412    o added verification/lab_sea/input.salt_plume for testing pkg/salt_plume
413    o pkg/salt_plume: clean up salt_plume_frac.F to
414      remove redundancy in PlumeMethod 1 and 4
415    o pkg/kpp: added saltplume diagnostics
416    o pkg/obcs and pkg/seaice:
417      - do not set uice and vice to zero when OB*icefile are unspecified
418      - OBCS_SEAICE_AVOID_CONVERGENCE is undefined by default
419      - moved seaice tracer obcs after call to seaice_growth
420    o pkg/salt_plume: added various options for salt plume depth
421      criterion and for vertical distribution of the salt
422    
423    checkpoint59l
424    o pkg/ptracers: new version of ptracers pickup:
425      read meta file and write only fields which are needed to restart.
426      ( same logic as main pickup file ; also using pickupStrictlyMatch )
427    o pkg/seaice:
428      - add timescale for melting due to warm mixed layer as a means of
429        setting SEAICE_availHeatFrac more conveniently
430      - add a CPP-flag/runtime parameter check for flooding algorithm
431      - reformulated availHeat in seaice_growth.F to be independent of AREA
432    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
433      unit changes
434    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
435    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
436      SX vector computer.
437    o pkg/seaice:
438      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
439        seaice forcing fields can now be read only through pkg/exf
440      - removed some unused halos
441    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
442    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
443      or U/VICE from U/VWIND before computing U/VSTRESS
444    
445    checkpoint59k
446    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
447      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
448    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
449      all experiments pass when compile with un-initialised var. checking option.
450    o added pkg/salt_plume
451    o script to test restart (for now, in MITgcm_contrib/jmc_script)
452    o pkg/seaice: new read/write pickup version.
453      read meta file and write only fields which are needed to restart.
454      ( same logic as main pickup file ; also using pickupStrictlyMatch )
455    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
456    o lab_sea.hb87: modify the domain & update output.hb87.txt :
457      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
458      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
459      process. Fixed here by closing the domain at the Northern boundary.
460    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
461    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
462      a set of consecutive levels in/from a 3-D array.
463    o pkg/ptracers:
464      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
465      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
466    
467    checkpoint59j
468    o in pkgs: dic, obcs, offline, rbcs:
469      standard way to compute coeff. for time interpolation between 2 time reccords
470      which retains full precision (& make results less dependent on compiler).
471      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
472    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
473      packages instead of reading ice cover and wind speed separately
474    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
475     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
476      to allow to compile customized code before the update)
477    o cleaning-up:
478      - fix CPP instruction syntax in pkg/obcs
479      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
480        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
481      - fix some threads issue in IO parts.
482    o pkg/dic:
483      - add tons of "_d 0" (--> much better testreports !)
484       and then update outputs of tutorial_global_oce_biogeo
485    o pkg/mom_fluxform:
486      add a special version of momentum advection intended to conserve momentum
487      next to a bathymetry step or a coastline edge. (default = off = #undef)
488    o new read/write pickup version:
489      - for now, only implemented for main (mdsio) pickup file.
490      - write out only what is needed to restart; merge pickup_nh , pickup_ph
491        and main pickup together.
492      - read meta file; read only what is needed to restart; stop if a field
493        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
494        if it make sense (even if the restart is not perfect).
495      - if no meta file, assume that pickup to read corresponds exactly to
496        a pickup that would currently be written.
497      - read pickup written in the old format (until checkpoint59i) if it
498        recognizes an old meta file (no field-list).
499      - add a meta file in exp. which starts from a pickup: 2 cases:
500        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
501         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
502        b) a meta file describing the content of the associated pickup file
503         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
504    o pkg/mdsio & pkg/rw:
505      - new routine to read a meta file ; new set of routine to read
506        Multiple-fields file (with meta file).
507    o added open boundary conditions capability for seaice
508        HSNOW, HSALT, UICE, and VICE
509    
510    checkpoint59i
511    o adjoint:
512      * fix multiDimAdvection adjoint
513        (partial recomputation problem by TAF for fVerT(:,:,kDown)
514        and comlev1 size definition (maxpass vs. max. number of tracers)
515      * verification/global_ocean.90x45x15 adjoint now tests
516        NLFS and multiDimAdvection using DST3 (=30)
517      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
518    o pkg/kpp: add "_d 0" to real constant (if missing);
519      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
520      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
521    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
522      for internal parameters related to restart process (formerly from PARAMS.h)
523      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
524    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
525      as argument. (only atm2d & obcs write_pickup have not yet been updated)
526    o pkg/monitor:
527      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
528      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
529      - account for deep Atmosphere factor and density factor (anelastic)
530    o added open boundary conditions capability for seaice HEFF and AREA
531    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
532      thermodynamics
533      - requires a little reorganization, which affects the testreport results
534        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
535        so that now the conservative form is tested
536      - add a few comments
537    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
538    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
539    o add new diagnostics to seaice: advective, diffusive fluxes (only for
540      multidim-advection, for scheme 2 they are not filled) and transports,
541      thermodynamic growth rates
542    o change units of EmPmR (inside the code, + within coupling interface)
543      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
544      Affects results @ truncation level (cg2d match) and update output of
545       experiments: lab_sea(6), global_ocean.90x40x15(10),
546      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
547      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
548      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
549      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
550    
551    checkpoint59h
552    o pkg/exf:
553      - improve vectorization by moving if-statement out of loops in
554        exf_mapfields, exf_radiation
555      - exf_bulkformulae.F: introduce 2D fields and vectorize code
556    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
557    o testreport:
558      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
559        monitor & update offline_exf_seaice exp. output.
560      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
561    o pkg/seaice:
562      - bug fix in the evp solver: boundary conditions were affected be
563        masking of zMax/zMin (changes results)
564      - minor bug fix in boundary conditions in seaice_calc_strainrates
565        (changes results for no_slip)
566      - seaice_lsr.F: make interpolation of eta dependent on boundaries
567      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
568      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
569        stress formulation and no-slip boundary conditions
570    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
571      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
572    o pkg/seaice: a first HSALT time stepping equation has been checked in
573    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
574      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
575      without requiring DO-IF statements
576    o pkg/thsice:
577      use continuous power-law function for partition of energy between lateral
578      melting/freezing and thinning/thickening ; old code using step function
579      still available with #undef THSICE_FRACEN_POWERLAW
580      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
581    o testreport: change AD testing : check against results/output_adm.txt
582      using same scripts as for forward test.
583    
584    checkpoint59g
585    o adjoint testing: in preparation for changing testreport:
586      - output format: cost and grad written on separated lines
587      - ad output results in directory "results" (instead of "results_ad")
588    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
589    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
590    o pkg/ecco: allow user defined cost function contributions
591    o testreport:
592      Allow to choose (per experiment) the list of tested output variables
593       and the main variable (used to issue a pass/FAIL ) ;
594      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
595      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
596      Also modify printing of summary:
597       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
598       b) echo the list of tested variables in the individual summary.txt of
599          each experiment.
600    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
601      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
602      (but still depend on the tile decompostion of the domain).
603    o pkg/seaice: change a discretization detail to make the B-grid code
604      "more symmetric". This change is likely to remove all "ridges/leads" that
605      where quasi-aligned with the grid in B-grid solutions. It may also be
606      the solution to the stress coupling issues with the B-grid.
607    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
608      remove .cvsignore from input dir. (since testreport no longer run here).
609    o pkg/thsice:
610     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
611     - fix reshaping of sea-ice just after advection:
612       melt all the ice only if ice-volume is too small.
613     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
614       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
615     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
616    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
617      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
618    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
619      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
620      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
621      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
622      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
623      -> update output.txt
624    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
625     this affects truncation error: -> update output.txt of exp:
626      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
627      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
628    
629    checkpoint59f
630    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
631    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
632      a bounded range (in forward mode)
633    o pkg/ecco, ctrl, autodiff and mom_common:
634     internal parameter controls, completements of implementations
635    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
636    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
637      (not seem any difference in testing results).
638    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
639       at face corners.
640    o pkg/generic_advdiff:
641     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
642      loop range indices for computing vertical advection tendency
643      and do the calculation in the interior only (no overlap) ;
644      for now, only implemented for SOM advection (to save CPU time).
645     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
646    o exch2 adjoint
647      First set of changes:
648      - add exch2 hand-written adjoint templates
649      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
650        This will require cleanup in pkg/autodiff/*.F
651        (changed routines currently kept separate in verif. code/)
652      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
653        that used to hide exch2 or cubed-sphere specific code
654        (commented via 'cph-exch2')
655    o pkg/seaice
656      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
657    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
658       output of global_ocean.cs32x15.thsice .
659    
660    checkpoint59e
661    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
662      for B-grid vector (not yet tested) and C-grid vector (<- only used
663      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
664    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
665      (#ifdef ALLOW_SALT_PLUME)
666    o gather_2d/scatter_2d: removed halo regions
667    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
668      scheme and the corresponding test case (under front_relax dir). For now,
669      only available with Skew-flux form and not yet tested in realistic set-up.
670      adjoint: store directives updated, but gradient checks deteriorated,
671      so maybe GM/Redi adjoint is now broken.
672    o seaice adjoint
673      * add AREA, HEFF, HSNOW as control variable
674        (should not change lab_sea results)
675      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
676    o pkg/seaice:
677      * added computation of saltFlux in seaice_growth;
678        For time being, sea ice salinity is assumed constant
679        contribution of snow flooding to freshening of sea ice is neglected.
680        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
681        defaults to 0.0 in order to maintain backward compatibility.
682        Typical values for SEAICE_salinity are 4 to 10 g/kg.
683      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
684      * added SEAICE_availHeatFrac, which specifies fraction of surface level
685        heat content used to melt or grow ice
686      * commented out cap of HICE: it helps keep ice thinner
687      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
688      * applied OBCS T/S mask to HEFFM sea ice mask
689    
690    checkpoint59d
691    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
692     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
693     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
694    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
695     and change default value of parameter "GM_Small_Number";
696     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
697       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
698       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
699    o pkg/ecco: cost function when applying pkg/smooth to controls
700    o pkg/ctrl: add forcingPrecond run time parameter
701    o pkg/seaice:
702     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
703     - fix bug in metric terms of u-equation in LSR solver (implicit part),
704       changes verification/lab_sea
705     - rearrange implicit part of u-equation in LSR solver to make it easier to
706       read, understand, and debug. This causes changes at the truncation level.
707     - fix (serious) bug in the boundary conditions (sign error in the implicit
708       part) of the LSR solver. Changes all LSR results.
709     - fixed problem with HSNOW initialization to avoid thick snow when AREA
710       is initilized with small values - does not change lab_sea results.
711     - added HsnowFile initialization capability
712    o pkg/smooth: addition to model/src and pkg/ctrl so allow
713     initialization of pkg/smooth and application to control vector
714    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
715    o dependencies: pkg/profiles requires pkg/cal
716    o pkg/profiles:
717     - added option ALLOW_PROFILES_GENERICGRID
718         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
719         that interpolation information (grid points and coefficients) is provided
720         within the netcdf input files.
721         -> sample matlab scripts can be found in MITgcm_contrib/gael
722         that allow you to prepare netcdf input files.
723     - also modified: cleaner include statements, cleaner error print statements,
724       cleaner stops when error, and more tests of the netcdf input files consistency.
725    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
726    o pkg/seaice:
727     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
728       requires a new routine: seaice_diagnostics_fill.F
729     - make sure that seaice does not move if not forced (pressure replacement
730       method, Hibler and Ip, 1995), changes results
731     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
732     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
733       It is turned off by default (=-1.), because it changes the results.
734     - make it possible to read AREA from a file, too.
735    
736    checkpoint59c
737    o add S/R and diagnostics for oceanic mixed-layer depth
738    o move GMRedi call after all vertical mixing schemes (including KPP)
739    o pkg/thsice:
740     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
741      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
742    o pkg/obcs:
743     - bug fix for balance code
744    o pkg/seaice:
745      - allow values of SEAICE_elasticParm > 1
746      - add new parameter SEAICE_evpTauRelax as an alternative
747        to SEAICE_elasticParm
748      - make lsr boundary conditions free slip (by default), changes result
749      - add code for no slip boundary conditions for lsr
750      - set minimum of zeta to zero (and not 4e8) (changes results)
751      - add a cap on AREA after advecting AREA if seaice_growth is not called
752    o change calculation of Visbeck K:
753      - no longer depend on tapering scheme; instead, compute slope (limited
754        by GM_maxSlope). this is equivalent to what was comuted before with
755        clipping or linear tappering.
756      - fix vertical averaging (wrong by 1/2 level)
757      - leave the old version (but will not be maintained) within
758        #ifdef OLD_VISBECK_CALC / #endif
759      - update output of exp. ideal_2D_oce
760    o change error catch in calc_r_star to improve vectorization
761    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
762      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
763    o adjoint:
764      Re-organized adjoint checkpointing according to Matt Mazloff
765      (but with modifs/completions/cleanups)
766      Storing is now bundled into large arrays to optimized I/O
767      (and second step in cleanup of the_main_loop)
768    
769    checkpoint59b
770    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
771      - export/import (between ocean & coupler) fields needed for ocean DIC.
772    o pkg/seaice:
773      - get rid of three more exchanges seaice_calc_viscosities (required
774        different loop boundaries in seaice_lsr and seaice_ocean_stress)
775      - bug fix in seaice_ocean_stress (update of lab_sea required)
776      - reduce loop boundaries to necessary minimum also in seaice_evp
777      - go back to the old way of computing deltaC/Z as the adjoint likes that
778        better
779    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
780      passive tracer to an Age Tracer) + update output.txt
781    o pkg/exf:
782      - implement A-grid / C-grid selection for wind-stress input files.
783      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
784      for now, in exf_bulk_largeyeager04.F only :
785      - change implementation for case where windspeed + 2. components wind-stress
786        are read-in. AND use rhoConstFresh to convert evap.
787    o pkg/seaice:
788      - use correct EXCH_UV for wind-forcing (on A-grid).
789      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
790        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
791    o pkg/exf:
792      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
793      EXF_INTERPOLATION:
794      - merge global_with_exf/code version of exf_interp_read.F
795        to the main code ;
796      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
797        reading the file ; Important: This options needs to be defined to recover
798        previous code.
799        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
800      - no longer loose real*8 precision along the way when using exf_iprec=64.
801    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
802      - change discretisation of evp-solver in order to avoid another exchange
803        (changes lab_sea) and clean up a little
804      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
805        help the adjoint (this also changes the results slightly)
806      - add a few "_d 0" where they had been missing in seaice_evp.F
807      - cleaning up: remove unused seaice_calc_rhs.F
808    o pkg/exf: some cleaning-up:
809      - change various "constants" into runtime parameters
810      - cleaned-up Large&Yeager04 routine which should eventually
811        replace exf_bulkformulae.F (changed names of S/R and CPP)
812        and merged various ALLOW_ATM_WIND options
813     only used with thsice pkg (in thsice_get_exf.F):
814      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
815        which are used when useStabilityFct_overIce=TRUE (= the default)
816      - change default values of ice & snow emissivity and scale downward LW
817        by ice & snow emissivity.
818    o pkg/thsice:
819     fix few little problems, in thsice_calc_thickn.F:
820      - growth vertically (and not laterally) if iceFrac == iceMaskMax
821      - melt only laterally if hIce < hThinIce (as the comments say)
822      and in thsice_extend.F:
823      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
824      - start to form ice as soon as the minimum ice-volume is reachable.
825     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
826      and cpl_aim+ocn
827    o pkg/kpp
828     - move computation of surface related input fields to KPP into a new
829       subroutine kpp_forcing_surf.F
830     - remove wrong (within bi,bj loops) EXCH calls.
831     - little cleaning (add argument myThid in last position, cvs header ...)
832     - for now, fix conservation problem by exchanging KPPviscAz (may not
833       be the best fix)
834    o pkg/seaice
835     - check for inconsistent evp parameter/cpp-flag combination
836     - remove leftover errIO flat for obsolete name list error handling
837    o OpenAD
838     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
839    
840    checkpoint59a
841    o pkg/seaice: some parameter clarifications and a little bit of clean up
842    o pkg/thsice: rename run-time parameters:
843       himin       -> hIceMin
844       himin0      -> hThinIce
845       hihig       -> hThickIce
846       i0          -> i0swFrac
847       transCoef   -> bMeltCoef
848       frac_energy -> fracMelting
849      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
850       with default values (for now) that do not change the results.
851      remove old version of thsice vars advection in pkg/seaice.
852    o in FFIELDS.h:
853      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
854      - make pLoad & sIceLoad always available (but still only used if
855         ATMOSPHERIC_LOADING is #define).
856    o pkg/kpp: replaced _KPP_RL with _RL
857    o bug fixes for vertical diffusivity computations when both KPP and
858        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
859        are no longer updating the vertical diffusivity array
860        (passed as argument) but are (re-) setting those arrays.
861    o pkg/seaice: fix bug in evp solver, while doing that
862      - change (improve?) discretization of stress computations for both
863        cgrid-lsr and evp solver
864      - add a new routine to compute strain rates
865      - the above changes lab_sea results
866      - add no slip conditions for evp solver (off by default), lsr-version
867        may follow
868      - fix exchange for shear at Z-points (does not change lab_sea)
869      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
870        (to force the user to pick a time step since there is not "safe" way
871        of choosing it)
872      - add principal stress diagnostics
873      - rearrange fields for evp a little to avoid having to call a: too many
874        exchanges and b: exchanges for stress trensor components which we do
875        not have.
876      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
877        of evp, complete rewrite for lsr case (latter is does not yet work
878        in all cases)
879    o pkg/kpp: add code to have mixing in shelf ice caverns
880      - add myThid to all kpp routines (long overdue)
881    
882    checkpoint59
883    o pkg/exf:
884      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
885        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
886      - move exf header files from lower_case.h to UPPER_CASE.h ;
887        add missing cvs Header & Name
888      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
889      - add namelist param. selectStressGridPosition, exf_monFreq
890      - retire many _CLIM routines, and remove data.exf_clim
891        + params moved to data.exf
892        + climsst, climsss now handled by exf_set_gen, i.e.
893          climss?period=0 refers to constant field,
894          climss?period=-12 to monthly forcing
895      - split up namelists in data.exf
896    o pkg/seaice:
897      - remove seaice_exch and seaice_exch_uv
898      - remove superfluous exchange of theta
899      - add myThid to seaice_budget_ocean/ice
900      - add new interface for atmospheric wind forcing (C-grid only)
901        + new routine
902        + two new field (taux, tauy for stress over ice)
903        + removed one global field (DAIRN) for C-grid case only
904    o pkg/thsise
905      - 2nd set of modifs for thsice adjoint in conjunction with exf
906    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
907    
908    checkpoint58y_post
909    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
910      vertical diffusivity, similar to that in MOM4; turned on using
911      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
912      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
913    o Added capability for 3D specification of background vertical diffusion
914      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
915      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
916      "data" file that contains the 3D vertical diffusivity coefficients.
917    o ice dynamics (pkg/seaice) with thsice thermodynamics:
918      - add code within pkg thsice to advect & diffuse sea-ice fields
919      similar to (and will replace) what has been added in  seaice_advdiff.F,
920      but: - conserving Mass, Heat & Salt.
921           - better when using non-linear advection scheme (not yet fully tested)
922           - can also be used in atmospheric set-up (for now, only the diffusion).
923    
924    checkpoint58x_post
925    o IO option for global-file compact format:
926      - add options when generating topology (utils/exch2/matlab-topology-generator)
927      - add I/O capability (pkg/mdsio).
928      - adapt utils/matlab/rdmds.m to read this format.
929      for now long-line format not yet supported by pkg/mdsio (& exch2).
930    o shelfice: add a few diagnostics
931    
932    checkpoint58w_post
933    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
934      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
935      (and replace horiVertRatio in NH code).
936      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
937                         and tutorial_plume_on_slope (sensitive to truncation)
938    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
939      directly to drive seaice model (C-grid only)
940    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
941     - reintroduce computation of wind from stress,
942     - compute tau (in exf_bulkformulae.F) from windstress averaged to
943       mass points to avoid tau = 0
944     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
945    o rdmnc.m: make it work with "global" files created with gluemnc
946    o rdmnc.m : some improvements in dealing with singleton dimension
947      (tested on all testreport mnc output files).
948    o genmake2: disable pkg/profiles if netcdf test fails.
949    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
950    o move call to cal_readparms up to make calendar parameters/variable available
951      to all packages
952    
953    checkpoint58v_post
954    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
955      useDynP_inEos_Zc tested.
956    o pkg/exf: changes to properly interpolate/mask/scale initial fields
957    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
958      and portions thereof.  See read_cs.txt for description and examples.
959    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
960      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
961      following the great-circle arc between those 2 points.
962    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
963      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
964    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
965     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
966     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
967     - still needs work (not working with some options ; efficiency to improve)
968       and serious testing.
969     - use this scheme for temperature & salinity in 2 advection test exp.:
970       advect_xy & advect_xz, respectively.
971    
972    checkpoint58u_post
973    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
974    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
975    o testreport: add option "-skipdir" to skip some test.
976    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
977      momentum calculation.
978    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
979    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
980      remove checkpoint.F and the_correction_step.F (no longer used);
981      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
982    o add option (linFSConserveTr) to correct for tracer source/sink due to
983      Linear Free surface
984    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
985    o pkg/thsice: fix reading mnc-pickups
986    
987    checkpoint58t_post
988    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
989    o pkg/mdsio:
990     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
991       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
992       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
993     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
994     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
995       either MDS_READ_FIELD or MDS_WRITE_FIELD )
996     - new S/R (to replace MDSWRITEMETA), which allows to write more
997       informations (variable names, time ...) to meta files.
998     - modify rdmds.m to give back the meta file content.
999    o pkg/diagnostics: change vertical interpolation to be safer, and more
1000       flexible (define p-levels to interpolate to in data.diagnostics);
1001      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
1002       diagnostic pointer.
1003    o pkg/seaice: more cleaning up of seaice_growth, added many comments
1004    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
1005    o fix multi-category seaice:
1006     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
1007       SEAICE_MULTICATEGORY
1008     - fix short wave heat flux
1009    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
1010       and allow to use EVP solver. Change forward lab_sea: test both EVP
1011       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
1012    o Initial check-in of lab_sea adjoint
1013      (very similar to natl_box_adjoint/code_seaice)
1014      * used C-grid and EVP solver
1015      * used KPP, GM/Redi
1016      * uses inAdExact=.TRUE.
1017      * gradient checks fail for both ADM and TLM
1018        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
1019        f.d. gradients actually seem more problematic than ADM, TLM gradients;
1020        issue is related to forward mismatch between g77 an ifort
1021    o pkg/seaice: overhaul of thermodynamics
1022     - growth.F and groatb.F are replaced by new routine seaice_growth.F
1023     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
1024     - move a few global fields out of SEAICE.h into seaice_growth.F and
1025       make them 2D (FICE/QNETO/ ...)
1026     - remove FO (it is the same as QNETO)
1027     - introduce a few local fields to avoid modifying external fields such
1028       as atemp, etc.
1029    
1030    checkpoint58s_post
1031    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
1032      changed exf_set_gen.F so that
1033        genperiod=0 means input file is one time-constant field and
1034        genperiod=-12 means input file contains 12 monthly means
1035    o CG2D: use pre-computed solver main-diagonal (stored in common block);
1036      this affects truncation error ; generate new output file for exp. which
1037      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
1038        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
1039        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
1040        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
1041        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
1042        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
1043    o start implementation of deep-atmosphere and anelastic formulation
1044    o verification: remove 2nd copy of input files and use script "prepare_run"
1045      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
1046  o mom_common/vecinv/fluxform: fix a few initialisation isssues  o mom_common/vecinv/fluxform: fix a few initialisation isssues
1047  o profiles: fix for multithreaded case  o profiles: fix for multithreaded case
1048    

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