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revision 1.729 by jmc, Fri Oct 6 19:44:51 2006 UTC revision 1.1048 by jmc, Tue Dec 30 18:00:09 2008 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/mdsio: read/write vector:
8     - singleCpuIO: fix RL/RS in MDSWRITEVECTOR by calling new S/R MDS_BUFFERtoRL/RS
9     - singleCpuIO=F: fix arrType & filePrec & _BYTESWAPIO in both MDSREADVECTOR
10       & MDSWRITEVECTOR by calling new S/R MDS_RD/WR_VEC_RL/RS.
11     - affects gradient of test-exp "bottom_ctrl_5x5" (not due to _BYTESWAPIO)
12      (drop to 4 digits matching for grad). But this test does not look very
13      reliable (was already failling on eddy, fc5, at 6.digits). Update output.
14    
15    checkpoint61g
16    o pkg/flt:
17      - move FLT_CPPOPTIONS.h to FLT_OPTIONS.h (standard name)
18       + make OPTIONS file more standard.
19      - rename S/R MDSREADVECTOR_FLT to FLT_MDSREADVECTOR (to mach src file name)
20      - fix _BYTESWAPIO CPP-Flag
21      - standard reading of file-parameter "data.flt"
22      - fix argument list of S/R FLT_RESTART
23      still need to fix _BYTESWAPIO in pkg/mdsio/mdsio_writevector.F
24    o pkg/obcs: fix a CPP-flag, bug reported by Jeff Blundell
25    o gather_2d.F/scatter_2d.F: suppress vectorisation on NEC SX in respond to
26      a still unfixed compiler/optimization bug
27    
28    checkpoint61f
29    o pkg/seaice, LSR solver: fix bug in GLOBAL_MAX calls ;
30      update results of global_ocean.cs32x15.icedyn test.
31    o move getcon.F from model/src to pkg/fizhi.
32    o pkg/exf: add parameter for extrapolation of temp up to the surface
33       and option to prevent negative evap (in bulk_largeyeager04 only).
34    o Prather Advection scheme: fix tracer conservation for divergent flow
35      (e.g., when using NonLin Free-Surface).
36    o kpp: retire KPPmld diagnostics --> use MXLDEPTH instead
37    o gmredi (Visbeck-variable-K):
38     - add more parameters to Visbeck-variable-K.
39     - use a 5 points average for dSigmaR in Visbeck-K calculation
40       (more "homogenous": same stencil and same weights as in dSigmaH)
41     - update output of ideal_2D_oce experiment.
42    o fix CPP-flag REAL4_IS_SLOW, when _RS expands into real*4
43      (#undef REAL4_IS_SLOW)
44     - pkg/mnc/mnc_cw_cvars.F: write _RS-grid variable as netcdf-real*4
45       coordinate variable
46     - pkg/monitor/monitor.F: call mon_printstats_rs for _RS variables
47       (surface forcing fields), removes some of the functionality
48     - model/src/write_grid.F: write _RS variables as RS-netcdf variables
49     - model/src/diags_oceanic_surf_flux.F: fix a few diagnostics, but
50       probably not all: copy _RS surface flux fields to RL field before
51       calling DIAGNOSTICS_FILL
52     - model/inc/CPP_EEMACROS.h: make the _EXCH_*_RS macros expand into
53       real*4 (CALL EXCH_*_RS) versions.
54     - tested in 2 experiments: inverted_barometer & solid-body.cs-32x32x1
55       (generate new output).
56    
57    checkpoint61e
58    o gmredi (Visbeck-variable-K):
59      - fix the "OLD_VISBECK_CALC" option + move the #undef to GMREDI_OPTIONS.h
60      - change computation of Visbeck-K where Slope > Smax :        
61        now: N*min(Slope,Smax) (similar to OLD_VISBECK_CALC with gkw91 taperFct)
62        previously was: M*sqrt(min(Slope,Smax)) ; update ideal_2D_oce output.
63    o bottom-drag in P-coord.: change units of bottomDragLinear & bottomDragQuadratic
64      to be the same as with Z-coord. (i.e., m/s & no-units respectively).
65    o calc_viscosity: fix index range (was wrong for CD-Scheme & explicit Visc)
66    o pkg gmredi, linear & fm07 tapering: put an upper limit on Slope^2 so that Kwz
67      does not become too large (to avoid precision problems in implicit-diffusion
68      solver); update ideal_2D_oce output.
69    o pkg ggl90:
70      - in ggl90_cal.F: compute only one set of visc/diff, used to
71        step forward TKE/T/S/momentum
72      - default value of GGL90viscMax/GGL90diffMax larger and equal (to
73        have Prandlt =1)
74    o gmredi (fm07):
75      - add lower limit on Transition layer thickness + lower limit on 1/lambda
76      - allow to set few more params from data.gmredi
77    o pkg ggl90:
78          - add missing sqrt(2) factor in computation of mixing length
79            scale in ggl90_calc.F
80            (see Eq. (2.35) in Blanke and Delecluse, JPO, 1993)
81    
82    checkpoint61d
83    o adjoint modifs
84      - adapt to new field rhoInSitu
85      - allow to revert from StoreDynVars2D, StoreDynVars3D
86        to individual fields
87        (switches AUTODIFF_USE_OLDSTORE_2D, AUTODIFF_USE_OLDSTORE_3D)
88    o store 3-D (in-situ) density in commom block (DYNVARS.h)
89     - save 1 rho computation.
90     - no longer modify T & S inland when using down_slope pkg.
91    o gad_som : allow to switch to SOM advection for T & S without corresponding
92      pickup files (using new S/R: MDS_CHECK4FILE).
93    o keep removing _BEGIN/_END_MASTER between MDSIO S/R call
94      (for useSingleCpuIO to work in multi-threaded)
95    o pkg/shelfice:
96     - disentangle parameters: retire shelfIceFile in data/PARM05 and substitute
97       with SHELFICEtopoFile in data.shelfice
98     - move code for reading ice shelf topography and modifying hFacC into separate
99       subroutines of the shelfice package
100     - separate initialisation of "fixed" and "variable" variables
101     - kTopC is not (yet) replaced by kSurfC, although this is possible
102    o fix broken diagnostic SIatmFW and changed the units from m/s to kg/m^2/s
103    o add initialisation of deepFac if using Pcoords (new S/R set_grid_factors)
104      and rename:
105      ini_phiref.F          --> set_ref_state.F  (+ set anelastic factors)
106      ini_reference_state.F --> load_ref_files.F (- set anelastic factors)
107    o change FIND_RHO_SCALAR : return rho (instead of rho - rhoConst)
108    
109    checkpoint61c
110    o add option ALLOW_ADDFLUID and run-time selector "selectAddFluid"
111      to add mass source/sink of fluid in the interior (3-D generalisation
112      of oceanic real-fresh water flux).
113    o pkg/monitor: fix recip_dr argument in mon_advcflw2 call (-> advcfl_W_hf_max)
114    o vermix test experiment: switch from LINEAR EOS to MDJWF (not tested before)
115    o new pkg: down_slope
116      density-driven downsloping flow parameterisation (Tellus, 1999, 412-430).
117      - presently, modify T & S inland (dwnslp_calc_rho.F).
118        can be avoided if rho was stored in common bloc and used in calc_phi_hyd.
119      - implementation for ocean in P-coords not tested.
120      - add secondary test to global_ocean.90x40x15 (input.dwnslp) to check this pkg.
121    o move kSurfC,kSurfW & kSurfS from SURFACE.h to GRID.h (next to kLowC)
122      (to facilitate conversion of oceanic pkg to p-coordinate).
123    o change FIND_RHO to FIND_RHO_2D :
124      pass arguments tFld & sFld as local (tile) 2D-arrays ; +fix EOS_CHECK.
125    o new pkg: cheapaml
126    
127    checkpoint61b
128    o exch2:
129      change index bounds in rx2_cube exchanges (new S/R: EXCH2_GET_UV_BOUNDS)
130      - no longer depend on the order sequence (N,S,E,W).
131      - 3rd exchange no longer needed (tested with 24 tiles).
132      - same modif to hand-written adjoint S/R (global_ocean.cs32x15: zero diff)
133      - exch_UV_A-grid readily available (but not yet tested).
134      comment out 3rd exch call and remove copy of V to U at SE & NE face-corners
135      (both are no longer needed) in exch_uv: no effect in forward run; but
136       get truncation error differences with adjoint exch.
137    o exch2:
138     - change index-bounds storage (moved from target to local tile,
139       more intuitive this way) ; rename/remove some variables.
140     - change utils/exch2/matlab-topology-generator & code_mods accordingly.
141    
142    checkpoint61a
143    o exch2/matlab-topology-generator:
144      fix bug in index bounds for N-S internal exchange (hard to tell if this
145      had any effect on the solution).
146    o pkg/mnc: small fix in mnc_handle_err: make sure that length of msgbuf
147      is exceeded
148    o testreport: modify syntax of awk, so that it works also with
149      awk, and not only with nawk and gawk
150    
151    checkpoint61
152    o autodiff
153      Change default for TAF usage by removing argument '-nonew_arg'
154      This changes TAF subroutine argument list (ordering of active var.)
155      Omission of this flag leads to incompatibility w.r.t. TAMC
156      To restore TAMC-compatibility, need following modifs:
157      * use adoptfile tools/adjoint_options/adjoint_tamc_compatibility
158      * use CPP option #define AUTODIFF_TAMC_COMPATIBILITY
159      Tested TAF version is 1.9.22
160      N.B.: exch2 hand-written adjoint code currently not TAMC compatible
161    
162    checkpoint60
163    --->>> This is the last checkpoint for which generating the adjoint
164    --->>> is done via the TAMC-compatibility TAF-flag "-nonewarg"
165    --->>> by default.
166    --->>> Future checkpoints will ommit this flag by default.
167    o pkg/generic_advdiff, os7mp: simplify and avoid division by zero.
168    o pkg/grdchk: Add gradient check to etan0 perturbations.
169    o pkg/exf: read ice area from file (#ifdef ALLOW_ICE_AREAMASK).
170    o pkg/autodiff: more flexibility in zeroadj.
171      model/src: modifying do_oceanic_phys.F accordingly.
172    o pkg/ctrl: Bounds for (kapgm,kapredi,eddypsi) parameter estimation.
173    o model/src and pkg/gmredi: GMREDI_WITH_STABLE_ADJOINT CPP option
174      special setup of gmredi for which the adjoint is stable
175      enough for parameter optimization.
176    o bridging the gap between eddy stress and GM.
177      -> eddyTau is replaced with eddyPsi (eddyTau = f x rho0 x eddyPsi)
178          along with a change in CPP option (now ALLOW_EDDYPSI).
179      -> when using GM w/ GM_AdvForm:
180          The total eddy streamfunction (Psi = eddyPsi + K x Slope)
181          is applied either in the tracer Eq. or in momentum Eq.
182          depending on data.gmredi (intro. GM_InMomAsStress).
183      -> ALLOW_EDDYPSI_CONTROL for estimation purpose.
184      The key modifications are in model/src/taueddy_external_forcing.F
185      pkg/gmredi/gmredi_calc_*F pkg/gmredi/gmredi_*transport.F
186    
187    checkpoint59r
188    o new S/R (pkg/mdsio/mdsio_facef_read.F) reading of sNx+1 x sNy+1 array
189      from per-face file (take S/R READSYMTILE_RS out of ini_curvilinear_grid.F);
190      fix option to read coriolis(@ cell-corner) from files with CS-grid.
191    o pkg/mnc: add some attributes to standard 1D-coordinate variables
192    o pkg/diagnostics: enforce missing_value attribute for scalar variables at
193      mass points, when using mnc for output
194      - add runtime parameter (missing_value, missing_value_int) to override
195        default (which is the value of getcon('UNDEF'))
196    o pkg/mnc: prepare mnc for the actual use of missing values with the
197      diagnostics package: small fix in mnc_cw_readwrite.template and more
198      initialisation of never used fields
199      - replace mnc_common.h and mnc_id_header.h with corresponding upper case
200      versions
201    o pkg/thsice/thsice_ini_vars.F added default initial values so that
202      thermodynamics sea ice solver does not blow up when some initial fields
203      are missing.
204    o move from external_forcing_surf.F to ini_forcing.F
205      the p-coord. hack consisting in using pLoad to set phi0surf ;
206      update output of tutorial_global_oce_in_p (affected @ truncation level).
207    o Freshen up a bit hs94.1x64x5, notably:
208      remove rotationPeriod and tRef=5*0. (adjoint only), and add
209      exactConserv=.TRUE.
210    o pkg/generic_advdiff:
211      change option GAD_ALLOW_SOM_ADVECT to GAD_ALLOW_TS_SOM_ADV which only
212      applies to files where Temperature & Salinity 2nd Order moments are used.
213    o pkg/ptracers: add second-order moment advection schemes (80 and 81);
214      this uses a dynamically allocated internal state data structure
215      (#define PTRACERS_ALLOW_DYN_STATE in PTRACERS_OPTIONS.h)
216      and requires a fortran 90 compiler
217    
218    checkpoint59q
219    o pkg/mom_vecinv: Add energy & enstrophy conserving scheme (selectVortScheme=3)
220       (from Sadourny, described by Burridge & Haseler, ECMWF Rep.4, 1977)
221    o Refresh tutorial_global_oce_biogeo, notably:
222      - change bathymetry (put back seamounts in ACC, use hFacs)
223      - change EOS (POLY3 --> JMD95Z)
224      - use Bryan-Lewis vertical diffusivity
225      - use multidimensional advection
226      - remove old virtual virtual in dic pkg, now done through ptracer pkg
227      - change a couple of parameters in dic pkg
228    o pkg/ctrl: change formula in adctrl_bound.F and add a parameter to ctrl_map_ini_gen.F
229    o pkg/obcs: change default to OBCSfixTopo = .true.,
230      - set OBCSfixTopo=.false. in exp4/input/data.obcs to reproduce old result
231      - replace "debugMode" with "debugLevel .GE. debLevB"
232    o implementation of TAF directives for gchem,cfc,dic
233    o remove "exp5" (replaced by tutorial_deep_convection).
234    o pkg/obcs: add code to fix topography gradients normal to open boundaries;
235      this requires computing the index fields OB_Jn/Js/Ie/Iw in obcs_readparms;
236      the code can be turned on by setting OBCSfixTopo = .true. in data.obcs
237      --> changes results in exp4, seaice_obcs
238    o tutorial_deep_convection :
239      update the set-up and increase resolution and domain size ; start
240      from pseudo initial conditions = output at t=120mn in order to see
241      something happening when running testreport.
242    o pkg/seaice: add os7mp as an advection scheme
243                  add check for advection schemes
244                  add a flag for restoring T and S underneath sea ice
245    o pkg/my82: add netcdf-support and diagnostics
246    o thsice pkg:
247      - Now hsMax limits snow height by turning it into ice following
248        flooding scheme (and now conserving energy)
249      - Slight rewriting of the formula in thsice_calc_thick.F
250      - Parameter rhowi eliminated to be replaced by floodFac = (rhosw-rhoi)/rhos
251      --> changes results of global_ocean.cs32x15.icedyn and global_ocean.cs32x15.thsice
252    
253    checkpoint59p
254    o gchem / dic / cfc :
255      - add useDIC, useCFC , read from "data.gchem" (& hold in GCHEM.h);
256      - add new parameter files: "data.dic" & "data.cfc" ;
257      - various re-arrangement in initialisation & header file ;
258      - fix tutorial_global_oce_biogeo for multi-threaded test.
259    o pkg/dic: test for "pickup_dic" file when restarting ;
260      if no pickup-file, can restart with a re-initialised pH (same as it did
261      before) providing pickupStrictlyMatch is set to False.
262    o change argument list of S/R PTRACERS_WRITE_PICKUP & MYPACKAGE_WRITE_PICKUP
263      + fix call to S/R GGL90_WRITE_PICKUP & DIC_WRITE_PICKUP
264    o add a "warning" (to Error msg file) when an Active Tracer is not using AB-2
265      and staggerTimeStep is off (needed for stability of Internal-wave dynamics).
266    o move out of PARAMS.h & data the last pieces of old-ptracer code: tauTr1ClimRelax,
267     & lambdaTr1ClimRelax ; put those 2 params in PTRACERS_PARAMS.h & data.ptracers
268       (note: not clear to me what lambdaTr1ClimRelax is still used for ...)
269    o pkg/mom_vecinv: - new parameter "selectVortScheme" to select which
270       scheme to use for vorticty-term ;
271     - compute upwindVorticity=T case within mom_vi_u/v_coriolis_c4.F
272       (with default selectVortScheme, return to original discretisation)
273     - remove weird combination (e.g.: upwindVorticity & highOrderVorticity)
274    o pkg/seaice: add a line to the summary to indicate grid type (B/C)
275    o in mom_calc_visc, fix average value of viscAh_W & viscA4_W next to the
276      bottom ; only used with variable horizontal viscosity and non-hydrostatic.
277      also fix diagnostics VISCAHW & VISCA4W.
278    
279    checkpoint59o
280    o dome/code/obcs_calc.F: avoid division by zero (detected using gfortran).
281    o change the loop ordering in most gad_*_adv_x.F to improve vectorization:
282      move a few statemens out the main loop into separate loops
283    o pkg/shelfice:
284      - sort out freshwater flux; convert freshwater fluxes to mass fluxes
285        (kg/m^2/s), does not break tests, because in verification/isomip,
286        rhoConstFresh=rhoConst (by accident)
287      - rearrange computation of tLoc, sLoc, pLoc to make code more efficient
288      - move S/R find_rho_scalar, pkg/ecco/sw_ptmp.F, pkg/ecco/sw_adtg.F into
289        new file model/src/seawater.F, so that they are available for all pkgs.
290      - convert potential temperature into in-situ temperature. This changes the
291        isomip tests => update tests
292    o add a flag writePickupAtEnd (default=true) to be able to suppress
293      writing a pickup at the last timestep
294    o tools/mpack-1.6 :
295      - disable automake (not working) and autoconf (not needed).
296      - update to version 1.6.4 which fix MD5 code on some 64 bits platforms
297        also cleaner with much less compilation warnings.
298    o pkg/profiles:
299      rename profiles_interp_mean_genericgrid as profiles_interp_mean_gg
300      (for "less than 32 characters name" compiler requirement)
301    o pkg/obcs and pkg/exf: added capability to specify seaice open boundary
302      conditions that have a different sampling frequency than S/T/U/V obcs
303    o pkg/diagnostics (stats-diags):
304      - fix global Min/Max in case 1 processor get only empty tiles
305    o genmake2: replace (4 times)
306         make genmake_tc_1.o >> genmake_warnings 2>&1
307      with
308         COMM="$CC $CFLAGS -c genmake_tc_1.c"
309         echo $COMM >> genmake_warnings
310         $COMM >> genmake_warnings 2>&1
311      to make genmake2 always see the value of CC as specified in the optfile.
312    o generic_advdiff: - prather advection scheme (SOM) coded for CS-grid.
313      - add diagnostics for 1srt & 2nd Order moments and sub-grid variance.
314      - modify verification advect_cs test to test SOM-advection on CS-grid.
315    o pkg/ctrl:
316      - Rewrite of ctrl_map_ini_ecco.F,
317        introducing a generic routine (ctrl_map_ini_gen.F).
318      - Modification of ctrl_bound/adctrl_bound handling control vector bounds.
319    
320    checkpoint59n
321    o pkg/diagnostics: for large number of diagnostics, store diagnostic mate
322      number in dedicate array "hdiag":
323      - new version of S/R DIAGNOSTICS_ADD2LIST : DIAGNOSTICS_ADDTOLIST
324        with 1 more argument (mate number); modify old version DIAGNOSTICS_ADD2LIST.
325      - many small changes (integer format) for large number of diagnostics
326      - start to use DIAGNOSTICS_ADDTOLIST (necessary for diagnostics with
327        a counter mate) in pkg diagnostics, ptracers, thsice & aim_v23.
328    o add parameter rotateGrid and Euler angles EulerPhi/Theta/Psi. For
329      usingSphericalGrid, this allows to define the rotated grid coordinates
330      via phiMin/thetaMin/dxSpacing/dySpacing, etc., but then re-compute the
331      geographical coordinates according to the inverse of the rotation defined
332      by the Euler angles, so that Coriolis parameter and online-interpolation by
333      exf works with the geographical coordinates on XC/YC/XG/YG.
334      Naturally, this feature does not work with all packages, so some
335      combinations are prohibited in config_summary (flt, flt_zonal, ecco,
336      profiles), because there the coordinates are assumed to be regular
337      spherical grid coordinates.
338    o pkg/gmredi,ctrl,ecco,autodiff,grdchk and model/src,inc:
339      - introduce isopycnal diffusion coefficient control.
340    o tools/adjoint_options:
341      - additional control vector components.
342    o pkg/mnc: have mnc create marginally meaning full coordinate variables
343      (that is the grid indices) if usingCurvilinearGrid and NOT EXCH2
344    o pkg/mypackage:
345      - add example of read/write pickup for state-var ;
346      - add entry points to the main code for state-vars diags & write-pickup.
347    o pkg/exf: rewrite of exf_getffieldrec.F to properly deal with year
348      transitions for useExfYearlyFields
349      - add new subroutine that determines the file to read from for
350        use*YearlyFields = .TRUE. and .FALSE.
351      - add a verification experiment to global_with_exf that tests
352        useExfYearlyFields with USE_EXF_INTERPOLATION defined
353    o pkg/obcs/exf: add useOBCSYearlyFields (=.FALSE.) to obcs with exf in
354      analogy to useExfYearlyFields; rearrange obcs_prescribe_read: two new
355      subroutines (which could be generated from a template, because they are
356      almost identical), for now they are included in obcs_prescribe_read.F for
357      simplicity
358    o pkg/exf:
359      - add a little more diagnostic to exf_interp_read (in analogy to
360        mds_read_field, can be turned off with debugLevel < debugLevA=1)
361      - improve vectorizability of exf_interp for TARGET_NEC_SX, makes code
362        ugly but fast by unrolling short inner loops, inserting a unroll=8
363        directive in routine lagran, and splitting a loop and making do while the
364        outermost loop (the latter requires the intoduction of index arrays)
365    o pkg/obcs: replace obcs_apply_area/heff/hsalt/hsnow with obcs_apply_seaice
366    o pkg/seaice: moved DIFFERENT_MULTIPLE from seaice_model to seaice_dynsolver
367      http://forge.csail.mit.edu/pipermail/mitgcm-devel/2008-January/003173.html
368    o verification/seaice_obcs: updated for restart test and latest options
369    o pkg/seaice: add a new flag SEAICEuseTEM to use a slightly different
370      ice rheology (so-called truncated ellipse, that gets rid of tensile stress);
371      for now this is only available for the C-grid code and also within
372      #ifdef SEAICE_ALLOW_TEM, because this option may slow down the EVP code
373    
374    checkpoint59m
375    o pkg/seaice: use different time constant for melting (SEAICE_gamma_t)
376      and freezing (SEAICE_gamma_t_frz) ice due to mixed layer temperature
377    o gad_som : fix flux output (& diagnostics) to have same units as other  
378      advection scheme fluxes (was previously multiplied by deltaT).  
379    o added verification/seaice_obcs both to test seaice open boundaries
380      and to provide an example matlab scrpt for generating them
381    o added verification/lab_sea/input.salt_plume for testing pkg/salt_plume
382    o pkg/salt_plume: clean up salt_plume_frac.F to
383      remove redundancy in PlumeMethod 1 and 4
384    o pkg/kpp: added saltplume diagnostics
385    o pkg/obcs and pkg/seaice:
386      - do not set uice and vice to zero when OB*icefile are unspecified
387      - OBCS_SEAICE_AVOID_CONVERGENCE is undefined by default
388      - moved seaice tracer obcs after call to seaice_growth
389    o pkg/salt_plume: added various options for salt plume depth
390      criterion and for vertical distribution of the salt
391    
392    checkpoint59l
393    o pkg/ptracers: new version of ptracers pickup:
394      read meta file and write only fields which are needed to restart.
395      ( same logic as main pickup file ; also using pickupStrictlyMatch )
396    o pkg/seaice:
397      - add timescale for melting due to warm mixed layer as a means of
398        setting SEAICE_availHeatFrac more conveniently
399      - add a CPP-flag/runtime parameter check for flooding algorithm
400      - reformulated availHeat in seaice_growth.F to be independent of AREA
401    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
402      unit changes
403    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
404    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
405      SX vector computer.
406    o pkg/seaice:
407      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
408        seaice forcing fields can now be read only through pkg/exf
409      - removed some unused halos
410    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
411    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
412      or U/VICE from U/VWIND before computing U/VSTRESS
413    
414    checkpoint59k
415    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
416      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
417    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
418      all experiments pass when compile with un-initialised var. checking option.
419    o added pkg/salt_plume
420    o script to test restart (for now, in MITgcm_contrib/jmc_script)
421    o pkg/seaice: new read/write pickup version.
422      read meta file and write only fields which are needed to restart.
423      ( same logic as main pickup file ; also using pickupStrictlyMatch )
424    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
425    o lab_sea.hb87: modify the domain & update output.hb87.txt :
426      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
427      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
428      process. Fixed here by closing the domain at the Northern boundary.
429    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
430    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
431      a set of consecutive levels in/from a 3-D array.
432    o pkg/ptracers:
433      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
434      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
435    
436    checkpoint59j
437    o in pkgs: dic, obcs, offline, rbcs:
438      standard way to compute coeff. for time interpolation between 2 time reccords
439      which retains full precision (& make results less dependent on compiler).
440      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
441    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
442      packages instead of reading ice cover and wind speed separately
443    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
444     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
445      to allow to compile customized code before the update)
446    o cleaning-up:
447      - fix CPP instruction syntax in pkg/obcs
448      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
449        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
450      - fix some threads issue in IO parts.
451    o pkg/dic:
452      - add tons of "_d 0" (--> much better testreports !)
453       and then update outputs of tutorial_global_oce_biogeo
454    o pkg/mom_fluxform:
455      add a special version of momentum advection intended to conserve momentum
456      next to a bathymetry step or a coastline edge. (default = off = #undef)
457    o new read/write pickup version:
458      - for now, only implemented for main (mdsio) pickup file.
459      - write out only what is needed to restart; merge pickup_nh , pickup_ph
460        and main pickup together.
461      - read meta file; read only what is needed to restart; stop if a field
462        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
463        if it make sense (even if the restart is not perfect).
464      - if no meta file, assume that pickup to read corresponds exactly to
465        a pickup that would currently be written.
466      - read pickup written in the old format (until checkpoint59i) if it
467        recognizes an old meta file (no field-list).
468      - add a meta file in exp. which starts from a pickup: 2 cases:
469        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
470         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
471        b) a meta file describing the content of the associated pickup file
472         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
473    o pkg/mdsio & pkg/rw:
474      - new routine to read a meta file ; new set of routine to read
475        Multiple-fields file (with meta file).
476    o added open boundary conditions capability for seaice
477        HSNOW, HSALT, UICE, and VICE
478    
479    checkpoint59i
480    o adjoint:
481      * fix multiDimAdvection adjoint
482        (partial recomputation problem by TAF for fVerT(:,:,kDown)
483        and comlev1 size definition (maxpass vs. max. number of tracers)
484      * verification/global_ocean.90x45x15 adjoint now tests
485        NLFS and multiDimAdvection using DST3 (=30)
486      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
487    o pkg/kpp: add "_d 0" to real constant (if missing);
488      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
489      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
490    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
491      for internal parameters related to restart process (formerly from PARAMS.h)
492      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
493    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
494      as argument. (only atm2d & obcs write_pickup have not yet been updated)
495    o pkg/monitor:
496      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
497      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
498      - account for deep Atmosphere factor and density factor (anelastic)
499    o added open boundary conditions capability for seaice HEFF and AREA
500    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
501      thermodynamics
502      - requires a little reorganization, which affects the testreport results
503        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
504        so that now the conservative form is tested
505      - add a few comments
506    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
507    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
508    o add new diagnostics to seaice: advective, diffusive fluxes (only for
509      multidim-advection, for scheme 2 they are not filled) and transports,
510      thermodynamic growth rates
511    o change units of EmPmR (inside the code, + within coupling interface)
512      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
513      Affects results @ truncation level (cg2d match) and update output of
514       experiments: lab_sea(6), global_ocean.90x40x15(10),
515      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
516      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
517      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
518      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
519    
520    checkpoint59h
521    o pkg/exf:
522      - improve vectorization by moving if-statement out of loops in
523        exf_mapfields, exf_radiation
524      - exf_bulkformulae.F: introduce 2D fields and vectorize code
525    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
526    o testreport:
527      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
528        monitor & update offline_exf_seaice exp. output.
529      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
530    o pkg/seaice:
531      - bug fix in the evp solver: boundary conditions were affected be
532        masking of zMax/zMin (changes results)
533      - minor bug fix in boundary conditions in seaice_calc_strainrates
534        (changes results for no_slip)
535      - seaice_lsr.F: make interpolation of eta dependent on boundaries
536      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
537      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
538        stress formulation and no-slip boundary conditions
539    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
540      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
541    o pkg/seaice: a first HSALT time stepping equation has been checked in
542    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
543      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
544      without requiring DO-IF statements
545    o pkg/thsice:
546      use continuous power-law function for partition of energy between lateral
547      melting/freezing and thinning/thickening ; old code using step function
548      still available with #undef THSICE_FRACEN_POWERLAW
549      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
550    o testreport: change AD testing : check against results/output_adm.txt
551      using same scripts as for forward test.
552    
553    checkpoint59g
554    o adjoint testing: in preparation for changing testreport:
555      - output format: cost and grad written on separated lines
556      - ad output results in directory "results" (instead of "results_ad")
557    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
558    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
559    o pkg/ecco: allow user defined cost function contributions
560    o testreport:
561      Allow to choose (per experiment) the list of tested output variables
562       and the main variable (used to issue a pass/FAIL ) ;
563      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
564      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
565      Also modify printing of summary:
566       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
567       b) echo the list of tested variables in the individual summary.txt of
568          each experiment.
569    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
570      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
571      (but still depend on the tile decompostion of the domain).
572    o pkg/seaice: change a discretization detail to make the B-grid code
573      "more symmetric". This change is likely to remove all "ridges/leads" that
574      where quasi-aligned with the grid in B-grid solutions. It may also be
575      the solution to the stress coupling issues with the B-grid.
576    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
577      remove .cvsignore from input dir. (since testreport no longer run here).
578    o pkg/thsice:
579     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
580     - fix reshaping of sea-ice just after advection:
581       melt all the ice only if ice-volume is too small.
582     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
583       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
584     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
585    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
586      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
587    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
588      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
589      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
590      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
591      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
592      -> update output.txt
593    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
594     this affects truncation error: -> update output.txt of exp:
595      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
596      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
597    
598    checkpoint59f
599    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
600    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
601      a bounded range (in forward mode)
602    o pkg/ecco, ctrl, autodiff and mom_common:
603     internal parameter controls, completements of implementations
604    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
605    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
606      (not seem any difference in testing results).
607    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
608       at face corners.
609    o pkg/generic_advdiff:
610     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
611      loop range indices for computing vertical advection tendency
612      and do the calculation in the interior only (no overlap) ;
613      for now, only implemented for SOM advection (to save CPU time).
614     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
615    o exch2 adjoint
616      First set of changes:
617      - add exch2 hand-written adjoint templates
618      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
619        This will require cleanup in pkg/autodiff/*.F
620        (changed routines currently kept separate in verif. code/)
621      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
622        that used to hide exch2 or cubed-sphere specific code
623        (commented via 'cph-exch2')
624    o pkg/seaice
625      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
626    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
627       output of global_ocean.cs32x15.thsice .
628    
629    checkpoint59e
630    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
631      for B-grid vector (not yet tested) and C-grid vector (<- only used
632      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
633    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
634      (#ifdef ALLOW_SALT_PLUME)
635    o gather_2d/scatter_2d: removed halo regions
636    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
637      scheme and the corresponding test case (under front_relax dir). For now,
638      only available with Skew-flux form and not yet tested in realistic set-up.
639      adjoint: store directives updated, but gradient checks deteriorated,
640      so maybe GM/Redi adjoint is now broken.
641    o seaice adjoint
642      * add AREA, HEFF, HSNOW as control variable
643        (should not change lab_sea results)
644      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
645    o pkg/seaice:
646      * added computation of saltFlux in seaice_growth;
647        For time being, sea ice salinity is assumed constant
648        contribution of snow flooding to freshening of sea ice is neglected.
649        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
650        defaults to 0.0 in order to maintain backward compatibility.
651        Typical values for SEAICE_salinity are 4 to 10 g/kg.
652      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
653      * added SEAICE_availHeatFrac, which specifies fraction of surface level
654        heat content used to melt or grow ice
655      * commented out cap of HICE: it helps keep ice thinner
656      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
657      * applied OBCS T/S mask to HEFFM sea ice mask
658    
659    checkpoint59d
660    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
661     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
662     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
663    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
664     and change default value of parameter "GM_Small_Number";
665     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
666       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
667       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
668    o pkg/ecco: cost function when applying pkg/smooth to controls
669    o pkg/ctrl: add forcingPrecond run time parameter
670    o pkg/seaice:
671     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
672     - fix bug in metric terms of u-equation in LSR solver (implicit part),
673       changes verification/lab_sea
674     - rearrange implicit part of u-equation in LSR solver to make it easier to
675       read, understand, and debug. This causes changes at the truncation level.
676     - fix (serious) bug in the boundary conditions (sign error in the implicit
677       part) of the LSR solver. Changes all LSR results.
678     - fixed problem with HSNOW initialization to avoid thick snow when AREA
679       is initilized with small values - does not change lab_sea results.
680     - added HsnowFile initialization capability
681    o pkg/smooth: addition to model/src and pkg/ctrl so allow
682     initialization of pkg/smooth and application to control vector
683    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
684    o dependencies: pkg/profiles requires pkg/cal
685    o pkg/profiles:
686     - added option ALLOW_PROFILES_GENERICGRID
687         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
688         that interpolation information (grid points and coefficients) is provided
689         within the netcdf input files.
690         -> sample matlab scripts can be found in MITgcm_contrib/gael
691         that allow you to prepare netcdf input files.
692     - also modified: cleaner include statements, cleaner error print statements,
693       cleaner stops when error, and more tests of the netcdf input files consistency.
694    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
695    o pkg/seaice:
696     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
697       requires a new routine: seaice_diagnostics_fill.F
698     - make sure that seaice does not move if not forced (pressure replacement
699       method, Hibler and Ip, 1995), changes results
700     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
701     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
702       It is turned off by default (=-1.), because it changes the results.
703     - make it possible to read AREA from a file, too.
704    
705    checkpoint59c
706    o add S/R and diagnostics for oceanic mixed-layer depth
707    o move GMRedi call after all vertical mixing schemes (including KPP)
708    o pkg/thsice:
709     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
710      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
711    o pkg/obcs:
712     - bug fix for balance code
713    o pkg/seaice:
714      - allow values of SEAICE_elasticParm > 1
715      - add new parameter SEAICE_evpTauRelax as an alternative
716        to SEAICE_elasticParm
717      - make lsr boundary conditions free slip (by default), changes result
718      - add code for no slip boundary conditions for lsr
719      - set minimum of zeta to zero (and not 4e8) (changes results)
720      - add a cap on AREA after advecting AREA if seaice_growth is not called
721    o change calculation of Visbeck K:
722      - no longer depend on tapering scheme; instead, compute slope (limited
723        by GM_maxSlope). this is equivalent to what was comuted before with
724        clipping or linear tappering.
725      - fix vertical averaging (wrong by 1/2 level)
726      - leave the old version (but will not be maintained) within
727        #ifdef OLD_VISBECK_CALC / #endif
728      - update output of exp. ideal_2D_oce
729    o change error catch in calc_r_star to improve vectorization
730    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
731      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
732    o adjoint:
733      Re-organized adjoint checkpointing according to Matt Mazloff
734      (but with modifs/completions/cleanups)
735      Storing is now bundled into large arrays to optimized I/O
736      (and second step in cleanup of the_main_loop)
737    
738    checkpoint59b
739    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
740      - export/import (between ocean & coupler) fields needed for ocean DIC.
741    o pkg/seaice:
742      - get rid of three more exchanges seaice_calc_viscosities (required
743        different loop boundaries in seaice_lsr and seaice_ocean_stress)
744      - bug fix in seaice_ocean_stress (update of lab_sea required)
745      - reduce loop boundaries to necessary minimum also in seaice_evp
746      - go back to the old way of computing deltaC/Z as the adjoint likes that
747        better
748    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
749      passive tracer to an Age Tracer) + update output.txt
750    o pkg/exf:
751      - implement A-grid / C-grid selection for wind-stress input files.
752      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
753      for now, in exf_bulk_largeyeager04.F only :
754      - change implementation for case where windspeed + 2. components wind-stress
755        are read-in. AND use rhoConstFresh to convert evap.
756    o pkg/seaice:
757      - use correct EXCH_UV for wind-forcing (on A-grid).
758      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
759        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
760    o pkg/exf:
761      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
762      EXF_INTERPOLATION:
763      - merge global_with_exf/code version of exf_interp_read.F
764        to the main code ;
765      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
766        reading the file ; Important: This options needs to be defined to recover
767        previous code.
768        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
769      - no longer loose real*8 precision along the way when using exf_iprec=64.
770    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
771      - change discretisation of evp-solver in order to avoid another exchange
772        (changes lab_sea) and clean up a little
773      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
774        help the adjoint (this also changes the results slightly)
775      - add a few "_d 0" where they had been missing in seaice_evp.F
776      - cleaning up: remove unused seaice_calc_rhs.F
777    o pkg/exf: some cleaning-up:
778      - change various "constants" into runtime parameters
779      - cleaned-up Large&Yeager04 routine which should eventually
780        replace exf_bulkformulae.F (changed names of S/R and CPP)
781        and merged various ALLOW_ATM_WIND options
782     only used with thsice pkg (in thsice_get_exf.F):
783      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
784        which are used when useStabilityFct_overIce=TRUE (= the default)
785      - change default values of ice & snow emissivity and scale downward LW
786        by ice & snow emissivity.
787    o pkg/thsice:
788     fix few little problems, in thsice_calc_thickn.F:
789      - growth vertically (and not laterally) if iceFrac == iceMaskMax
790      - melt only laterally if hIce < hThinIce (as the comments say)
791      and in thsice_extend.F:
792      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
793      - start to form ice as soon as the minimum ice-volume is reachable.
794     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
795      and cpl_aim+ocn
796    o pkg/kpp
797     - move computation of surface related input fields to KPP into a new
798       subroutine kpp_forcing_surf.F
799     - remove wrong (within bi,bj loops) EXCH calls.
800     - little cleaning (add argument myThid in last position, cvs header ...)
801     - for now, fix conservation problem by exchanging KPPviscAz (may not
802       be the best fix)
803    o pkg/seaice
804     - check for inconsistent evp parameter/cpp-flag combination
805     - remove leftover errIO flat for obsolete name list error handling
806    o OpenAD
807     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
808    
809    checkpoint59a
810    o pkg/seaice: some parameter clarifications and a little bit of clean up
811    o pkg/thsice: rename run-time parameters:
812       himin       -> hIceMin
813       himin0      -> hThinIce
814       hihig       -> hThickIce
815       i0          -> i0swFrac
816       transCoef   -> bMeltCoef
817       frac_energy -> fracMelting
818      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
819       with default values (for now) that do not change the results.
820      remove old version of thsice vars advection in pkg/seaice.
821    o in FFIELDS.h:
822      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
823      - make pLoad & sIceLoad always available (but still only used if
824         ATMOSPHERIC_LOADING is #define).
825    o pkg/kpp: replaced _KPP_RL with _RL
826    o bug fixes for vertical diffusivity computations when both KPP and
827        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
828        are no longer updating the vertical diffusivity array
829        (passed as argument) but are (re-) setting those arrays.
830    o pkg/seaice: fix bug in evp solver, while doing that
831      - change (improve?) discretization of stress computations for both
832        cgrid-lsr and evp solver
833      - add a new routine to compute strain rates
834      - the above changes lab_sea results
835      - add no slip conditions for evp solver (off by default), lsr-version
836        may follow
837      - fix exchange for shear at Z-points (does not change lab_sea)
838      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
839        (to force the user to pick a time step since there is not "safe" way
840        of choosing it)
841      - add principal stress diagnostics
842      - rearrange fields for evp a little to avoid having to call a: too many
843        exchanges and b: exchanges for stress trensor components which we do
844        not have.
845      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
846        of evp, complete rewrite for lsr case (latter is does not yet work
847        in all cases)
848    o pkg/kpp: add code to have mixing in shelf ice caverns
849      - add myThid to all kpp routines (long overdue)
850    
851    checkpoint59
852    o pkg/exf:
853      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
854        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
855      - move exf header files from lower_case.h to UPPER_CASE.h ;
856        add missing cvs Header & Name
857      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
858      - add namelist param. selectStressGridPosition, exf_monFreq
859      - retire many _CLIM routines, and remove data.exf_clim
860        + params moved to data.exf
861        + climsst, climsss now handled by exf_set_gen, i.e.
862          climss?period=0 refers to constant field,
863          climss?period=-12 to monthly forcing
864      - split up namelists in data.exf
865    o pkg/seaice:
866      - remove seaice_exch and seaice_exch_uv
867      - remove superfluous exchange of theta
868      - add myThid to seaice_budget_ocean/ice
869      - add new interface for atmospheric wind forcing (C-grid only)
870        + new routine
871        + two new field (taux, tauy for stress over ice)
872        + removed one global field (DAIRN) for C-grid case only
873    o pkg/thsise
874      - 2nd set of modifs for thsice adjoint in conjunction with exf
875    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
876    
877    checkpoint58y_post
878    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
879      vertical diffusivity, similar to that in MOM4; turned on using
880      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
881      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
882    o Added capability for 3D specification of background vertical diffusion
883      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
884      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
885      "data" file that contains the 3D vertical diffusivity coefficients.
886    o ice dynamics (pkg/seaice) with thsice thermodynamics:
887      - add code within pkg thsice to advect & diffuse sea-ice fields
888      similar to (and will replace) what has been added in  seaice_advdiff.F,
889      but: - conserving Mass, Heat & Salt.
890           - better when using non-linear advection scheme (not yet fully tested)
891           - can also be used in atmospheric set-up (for now, only the diffusion).
892    
893    checkpoint58x_post
894    o IO option for global-file compact format:
895      - add options when generating topology (utils/exch2/matlab-topology-generator)
896      - add I/O capability (pkg/mdsio).
897      - adapt utils/matlab/rdmds.m to read this format.
898      for now long-line format not yet supported by pkg/mdsio (& exch2).
899    o shelfice: add a few diagnostics
900    
901    checkpoint58w_post
902    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
903      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
904      (and replace horiVertRatio in NH code).
905      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
906                         and tutorial_plume_on_slope (sensitive to truncation)
907    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
908      directly to drive seaice model (C-grid only)
909    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
910     - reintroduce computation of wind from stress,
911     - compute tau (in exf_bulkformulae.F) from windstress averaged to
912       mass points to avoid tau = 0
913     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
914    o rdmnc.m: make it work with "global" files created with gluemnc
915    o rdmnc.m : some improvements in dealing with singleton dimension
916      (tested on all testreport mnc output files).
917    o genmake2: disable pkg/profiles if netcdf test fails.
918    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
919    o move call to cal_readparms up to make calendar parameters/variable available
920      to all packages
921    
922    checkpoint58v_post
923    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
924      useDynP_inEos_Zc tested.
925    o pkg/exf: changes to properly interpolate/mask/scale initial fields
926    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
927      and portions thereof.  See read_cs.txt for description and examples.
928    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
929      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
930      following the great-circle arc between those 2 points.
931    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
932      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
933    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
934     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
935     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
936     - still needs work (not working with some options ; efficiency to improve)
937       and serious testing.
938     - use this scheme for temperature & salinity in 2 advection test exp.:
939       advect_xy & advect_xz, respectively.
940    
941    checkpoint58u_post
942    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
943    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
944    o testreport: add option "-skipdir" to skip some test.
945    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
946      momentum calculation.
947    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
948    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
949      remove checkpoint.F and the_correction_step.F (no longer used);
950      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
951    o add option (linFSConserveTr) to correct for tracer source/sink due to
952      Linear Free surface
953    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
954    o pkg/thsice: fix reading mnc-pickups
955    
956    checkpoint58t_post
957    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
958    o pkg/mdsio:
959     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
960       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
961       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
962     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
963     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
964       either MDS_READ_FIELD or MDS_WRITE_FIELD )
965     - new S/R (to replace MDSWRITEMETA), which allows to write more
966       informations (variable names, time ...) to meta files.
967     - modify rdmds.m to give back the meta file content.
968    o pkg/diagnostics: change vertical interpolation to be safer, and more
969       flexible (define p-levels to interpolate to in data.diagnostics);
970      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
971       diagnostic pointer.
972    o pkg/seaice: more cleaning up of seaice_growth, added many comments
973    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
974    o fix multi-category seaice:
975     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
976       SEAICE_MULTICATEGORY
977     - fix short wave heat flux
978    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
979       and allow to use EVP solver. Change forward lab_sea: test both EVP
980       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
981    o Initial check-in of lab_sea adjoint
982      (very similar to natl_box_adjoint/code_seaice)
983      * used C-grid and EVP solver
984      * used KPP, GM/Redi
985      * uses inAdExact=.TRUE.
986      * gradient checks fail for both ADM and TLM
987        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
988        f.d. gradients actually seem more problematic than ADM, TLM gradients;
989        issue is related to forward mismatch between g77 an ifort
990    o pkg/seaice: overhaul of thermodynamics
991     - growth.F and groatb.F are replaced by new routine seaice_growth.F
992     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
993     - move a few global fields out of SEAICE.h into seaice_growth.F and
994       make them 2D (FICE/QNETO/ ...)
995     - remove FO (it is the same as QNETO)
996     - introduce a few local fields to avoid modifying external fields such
997       as atemp, etc.
998    
999    checkpoint58s_post
1000    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
1001      changed exf_set_gen.F so that
1002        genperiod=0 means input file is one time-constant field and
1003        genperiod=-12 means input file contains 12 monthly means
1004    o CG2D: use pre-computed solver main-diagonal (stored in common block);
1005      this affects truncation error ; generate new output file for exp. which
1006      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
1007        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
1008        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
1009        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
1010        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
1011        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
1012    o start implementation of deep-atmosphere and anelastic formulation
1013    o verification: remove 2nd copy of input files and use script "prepare_run"
1014      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
1015    o mom_common/vecinv/fluxform: fix a few initialisation isssues
1016    o profiles: fix for multithreaded case
1017    
1018    o diagnostics: rename few diags:
1019      s/'PRESSURE'/'RCENTER '/g
1020      s/'TICE    '/'oceFreez'/g
1021      s/'TAUX    '/'oceTAUX '/g
1022      s/'TAUY    '/'oceTAUY '/g
1023      s/'SWFLUX  '/'oceQsw  '/g
1024      s/DIFx/DFxE/g
1025      s/DIFy/DFyE/g
1026      and add few ocean-forcing diagnostics:
1027      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
1028    o modifications to pkg/seaice/growth.F and budget.F, which change results of
1029      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
1030      as actual snow thickness.  It now refers everywhere to effective snow
1031      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
1032    
1033    checkpoint58r_post
1034    o modifications to pkg/seaice/growth.F, which change results of
1035      lab_sea experiment: fixes pertain to melting snow over open water, to
1036      masking EVAP under sea ice, and to using the correct AREA variable for
1037      computations of EVAP, PRECIP, HSNOW, and GHEFF
1038    o add ability to read bathy, salt, and theta using MNC (off by def)
1039    o add flooding algorithm and advection of HSNOW for pkg/seaice;
1040      both are turned off by default and do no change any results
1041    o seaice advection with pkg/thsice: a step toward the use of non-linear
1042      advection scheme, but #ifdef or commented out for now (requires more EXCH).
1043    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
1044      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
1045      in natl_box (affects results @ truncation level: update output.txt)
1046    o multi-threading and IO:
1047      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
1048      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
1049        (needed to work with SingleCpuIO): tested in all verif. exp.
1050    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
1051      affects the results (but none of the verification test uses this scheme).
1052    o Adding some pkg/diagnostics capability to pkg/seaice
1053      (will certainly be subject to changes)
1054    o ctrl: adding new control variables:
1055      lwflux, lwdown, evap, snowprecip, apressure, runoff
1056    
1057    checkpoint58q_post
1058    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
1059      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
1060      high_res_cube configuration by 4% on Columbia.
1061    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
1062      add (in global_with_exf/code) a version of EXF_INTERP_READ without
1063      dynamical allocation (seems to work in multi-threaded).
1064    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
1065      single CPU io) so that TAF does not have to see EESUPPORT.h
1066  o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)  o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
1067    
1068  checkpoint58p_post  checkpoint58p_post

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