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revision 1.749 by mlosch, Thu Nov 23 10:03:44 2006 UTC revision 1.1056 by jmc, Tue Jan 27 15:41:52 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 rename thetaMin,phiMin -> xgOrigin,ygOrigin
8      (maintain temporary backward compatibility, until next checkpoint)
9    
10    checkpoint61h
11    o pkg/diagnostics with "periodic averaging diagnostics":
12      fix S/R DIAGNOSTICS_COUNT ; hack diagnostics_out.F to get NetCDF output.
13    o pkg/my82: add missing "_d 0" ; update output of exp. vermix.my82
14    o pkg/obcs: fix loop ranges for balancing code
15    o pkg/flt:
16     - improve criteria for finding which tile owns a float.
17     - fix FLT_EXCH for case without MPI ; apply cyclic BC + fix also the MPI case.
18    o Add well-mixed CO2 box in aim_v23 (which includes changes in pkg
19      aim_compon_interf, ocn_compon_interf, gchem, and dic to get coupling
20      with ocean biogeo)
21    o pkg/flt:
22     - do some cleaning and fix the restart ;
23     - add output.txt in flt_example/results to get this pkg tested.
24    o genmake2: add an EXTENDED_SRC option and flag.
25       for now, cannot be turned on on command line (only through genmake_local)
26    o pkg/mdsio: read/write vector:
27     - singleCpuIO: fix RL/RS in MDSWRITEVECTOR by calling new S/R MDS_BUFFERtoRL/RS
28     - singleCpuIO=F: fix arrType & filePrec & _BYTESWAPIO in both MDSREADVECTOR
29       & MDSWRITEVECTOR by calling new S/R MDS_RD/WR_VEC_RL/RS.
30     - affects gradient of test-exp "bottom_ctrl_5x5" (not due to _BYTESWAPIO)
31      (drop to 4 digits matching for grad). But this test does not look very
32      reliable (was already failling on eddy, fc5, at 6.digits). Update output.
33    
34    checkpoint61g
35    o pkg/flt:
36      - move FLT_CPPOPTIONS.h to FLT_OPTIONS.h (standard name)
37       + make OPTIONS file more standard.
38      - rename S/R MDSREADVECTOR_FLT to FLT_MDSREADVECTOR (to mach src file name)
39      - fix _BYTESWAPIO CPP-Flag
40      - standard reading of file-parameter "data.flt"
41      - fix argument list of S/R FLT_RESTART
42      still need to fix _BYTESWAPIO in pkg/mdsio/mdsio_writevector.F
43    o pkg/obcs: fix a CPP-flag, bug reported by Jeff Blundell
44    o gather_2d.F/scatter_2d.F: suppress vectorisation on NEC SX in respond to
45      a still unfixed compiler/optimization bug
46    
47    checkpoint61f
48    o pkg/seaice, LSR solver: fix bug in GLOBAL_MAX calls ;
49      update results of global_ocean.cs32x15.icedyn test.
50    o move getcon.F from model/src to pkg/fizhi.
51    o pkg/exf: add parameter for extrapolation of temp up to the surface
52       and option to prevent negative evap (in bulk_largeyeager04 only).
53    o Prather Advection scheme: fix tracer conservation for divergent flow
54      (e.g., when using NonLin Free-Surface).
55    o kpp: retire KPPmld diagnostics --> use MXLDEPTH instead
56    o gmredi (Visbeck-variable-K):
57     - add more parameters to Visbeck-variable-K.
58     - use a 5 points average for dSigmaR in Visbeck-K calculation
59       (more "homogenous": same stencil and same weights as in dSigmaH)
60     - update output of ideal_2D_oce experiment.
61    o fix CPP-flag REAL4_IS_SLOW, when _RS expands into real*4
62      (#undef REAL4_IS_SLOW)
63     - pkg/mnc/mnc_cw_cvars.F: write _RS-grid variable as netcdf-real*4
64       coordinate variable
65     - pkg/monitor/monitor.F: call mon_printstats_rs for _RS variables
66       (surface forcing fields), removes some of the functionality
67     - model/src/write_grid.F: write _RS variables as RS-netcdf variables
68     - model/src/diags_oceanic_surf_flux.F: fix a few diagnostics, but
69       probably not all: copy _RS surface flux fields to RL field before
70       calling DIAGNOSTICS_FILL
71     - model/inc/CPP_EEMACROS.h: make the _EXCH_*_RS macros expand into
72       real*4 (CALL EXCH_*_RS) versions.
73     - tested in 2 experiments: inverted_barometer & solid-body.cs-32x32x1
74       (generate new output).
75    
76    checkpoint61e
77    o gmredi (Visbeck-variable-K):
78      - fix the "OLD_VISBECK_CALC" option + move the #undef to GMREDI_OPTIONS.h
79      - change computation of Visbeck-K where Slope > Smax :        
80        now: N*min(Slope,Smax) (similar to OLD_VISBECK_CALC with gkw91 taperFct)
81        previously was: M*sqrt(min(Slope,Smax)) ; update ideal_2D_oce output.
82    o bottom-drag in P-coord.: change units of bottomDragLinear & bottomDragQuadratic
83      to be the same as with Z-coord. (i.e., m/s & no-units respectively).
84    o calc_viscosity: fix index range (was wrong for CD-Scheme & explicit Visc)
85    o pkg gmredi, linear & fm07 tapering: put an upper limit on Slope^2 so that Kwz
86      does not become too large (to avoid precision problems in implicit-diffusion
87      solver); update ideal_2D_oce output.
88    o pkg ggl90:
89      - in ggl90_cal.F: compute only one set of visc/diff, used to
90        step forward TKE/T/S/momentum
91      - default value of GGL90viscMax/GGL90diffMax larger and equal (to
92        have Prandlt =1)
93    o gmredi (fm07):
94      - add lower limit on Transition layer thickness + lower limit on 1/lambda
95      - allow to set few more params from data.gmredi
96    o pkg ggl90:
97          - add missing sqrt(2) factor in computation of mixing length
98            scale in ggl90_calc.F
99            (see Eq. (2.35) in Blanke and Delecluse, JPO, 1993)
100    
101    checkpoint61d
102    o adjoint modifs
103      - adapt to new field rhoInSitu
104      - allow to revert from StoreDynVars2D, StoreDynVars3D
105        to individual fields
106        (switches AUTODIFF_USE_OLDSTORE_2D, AUTODIFF_USE_OLDSTORE_3D)
107    o store 3-D (in-situ) density in commom block (DYNVARS.h)
108     - save 1 rho computation.
109     - no longer modify T & S inland when using down_slope pkg.
110    o gad_som : allow to switch to SOM advection for T & S without corresponding
111      pickup files (using new S/R: MDS_CHECK4FILE).
112    o keep removing _BEGIN/_END_MASTER between MDSIO S/R call
113      (for useSingleCpuIO to work in multi-threaded)
114    o pkg/shelfice:
115     - disentangle parameters: retire shelfIceFile in data/PARM05 and substitute
116       with SHELFICEtopoFile in data.shelfice
117     - move code for reading ice shelf topography and modifying hFacC into separate
118       subroutines of the shelfice package
119     - separate initialisation of "fixed" and "variable" variables
120     - kTopC is not (yet) replaced by kSurfC, although this is possible
121    o fix broken diagnostic SIatmFW and changed the units from m/s to kg/m^2/s
122    o add initialisation of deepFac if using Pcoords (new S/R set_grid_factors)
123      and rename:
124      ini_phiref.F          --> set_ref_state.F  (+ set anelastic factors)
125      ini_reference_state.F --> load_ref_files.F (- set anelastic factors)
126    o change FIND_RHO_SCALAR : return rho (instead of rho - rhoConst)
127    
128    checkpoint61c
129    o add option ALLOW_ADDFLUID and run-time selector "selectAddFluid"
130      to add mass source/sink of fluid in the interior (3-D generalisation
131      of oceanic real-fresh water flux).
132    o pkg/monitor: fix recip_dr argument in mon_advcflw2 call (-> advcfl_W_hf_max)
133    o vermix test experiment: switch from LINEAR EOS to MDJWF (not tested before)
134    o new pkg: down_slope
135      density-driven downsloping flow parameterisation (Tellus, 1999, 412-430).
136      - presently, modify T & S inland (dwnslp_calc_rho.F).
137        can be avoided if rho was stored in common bloc and used in calc_phi_hyd.
138      - implementation for ocean in P-coords not tested.
139      - add secondary test to global_ocean.90x40x15 (input.dwnslp) to check this pkg.
140    o move kSurfC,kSurfW & kSurfS from SURFACE.h to GRID.h (next to kLowC)
141      (to facilitate conversion of oceanic pkg to p-coordinate).
142    o change FIND_RHO to FIND_RHO_2D :
143      pass arguments tFld & sFld as local (tile) 2D-arrays ; +fix EOS_CHECK.
144    o new pkg: cheapaml
145    
146    checkpoint61b
147    o exch2:
148      change index bounds in rx2_cube exchanges (new S/R: EXCH2_GET_UV_BOUNDS)
149      - no longer depend on the order sequence (N,S,E,W).
150      - 3rd exchange no longer needed (tested with 24 tiles).
151      - same modif to hand-written adjoint S/R (global_ocean.cs32x15: zero diff)
152      - exch_UV_A-grid readily available (but not yet tested).
153      comment out 3rd exch call and remove copy of V to U at SE & NE face-corners
154      (both are no longer needed) in exch_uv: no effect in forward run; but
155       get truncation error differences with adjoint exch.
156    o exch2:
157     - change index-bounds storage (moved from target to local tile,
158       more intuitive this way) ; rename/remove some variables.
159     - change utils/exch2/matlab-topology-generator & code_mods accordingly.
160    
161    checkpoint61a
162    o exch2/matlab-topology-generator:
163      fix bug in index bounds for N-S internal exchange (hard to tell if this
164      had any effect on the solution).
165    o pkg/mnc: small fix in mnc_handle_err: make sure that length of msgbuf
166      is exceeded
167    o testreport: modify syntax of awk, so that it works also with
168      awk, and not only with nawk and gawk
169    
170    checkpoint61
171    o autodiff
172      Change default for TAF usage by removing argument '-nonew_arg'
173      This changes TAF subroutine argument list (ordering of active var.)
174      Omission of this flag leads to incompatibility w.r.t. TAMC
175      To restore TAMC-compatibility, need following modifs:
176      * use adoptfile tools/adjoint_options/adjoint_tamc_compatibility
177      * use CPP option #define AUTODIFF_TAMC_COMPATIBILITY
178      Tested TAF version is 1.9.22
179      N.B.: exch2 hand-written adjoint code currently not TAMC compatible
180    
181    checkpoint60
182    --->>> This is the last checkpoint for which generating the adjoint
183    --->>> is done via the TAMC-compatibility TAF-flag "-nonewarg"
184    --->>> by default.
185    --->>> Future checkpoints will ommit this flag by default.
186    o pkg/generic_advdiff, os7mp: simplify and avoid division by zero.
187    o pkg/grdchk: Add gradient check to etan0 perturbations.
188    o pkg/exf: read ice area from file (#ifdef ALLOW_ICE_AREAMASK).
189    o pkg/autodiff: more flexibility in zeroadj.
190      model/src: modifying do_oceanic_phys.F accordingly.
191    o pkg/ctrl: Bounds for (kapgm,kapredi,eddypsi) parameter estimation.
192    o model/src and pkg/gmredi: GMREDI_WITH_STABLE_ADJOINT CPP option
193      special setup of gmredi for which the adjoint is stable
194      enough for parameter optimization.
195    o bridging the gap between eddy stress and GM.
196      -> eddyTau is replaced with eddyPsi (eddyTau = f x rho0 x eddyPsi)
197          along with a change in CPP option (now ALLOW_EDDYPSI).
198      -> when using GM w/ GM_AdvForm:
199          The total eddy streamfunction (Psi = eddyPsi + K x Slope)
200          is applied either in the tracer Eq. or in momentum Eq.
201          depending on data.gmredi (intro. GM_InMomAsStress).
202      -> ALLOW_EDDYPSI_CONTROL for estimation purpose.
203      The key modifications are in model/src/taueddy_external_forcing.F
204      pkg/gmredi/gmredi_calc_*F pkg/gmredi/gmredi_*transport.F
205    
206    checkpoint59r
207    o new S/R (pkg/mdsio/mdsio_facef_read.F) reading of sNx+1 x sNy+1 array
208      from per-face file (take S/R READSYMTILE_RS out of ini_curvilinear_grid.F);
209      fix option to read coriolis(@ cell-corner) from files with CS-grid.
210    o pkg/mnc: add some attributes to standard 1D-coordinate variables
211    o pkg/diagnostics: enforce missing_value attribute for scalar variables at
212      mass points, when using mnc for output
213      - add runtime parameter (missing_value, missing_value_int) to override
214        default (which is the value of getcon('UNDEF'))
215    o pkg/mnc: prepare mnc for the actual use of missing values with the
216      diagnostics package: small fix in mnc_cw_readwrite.template and more
217      initialisation of never used fields
218      - replace mnc_common.h and mnc_id_header.h with corresponding upper case
219      versions
220    o pkg/thsice/thsice_ini_vars.F added default initial values so that
221      thermodynamics sea ice solver does not blow up when some initial fields
222      are missing.
223    o move from external_forcing_surf.F to ini_forcing.F
224      the p-coord. hack consisting in using pLoad to set phi0surf ;
225      update output of tutorial_global_oce_in_p (affected @ truncation level).
226    o Freshen up a bit hs94.1x64x5, notably:
227      remove rotationPeriod and tRef=5*0. (adjoint only), and add
228      exactConserv=.TRUE.
229    o pkg/generic_advdiff:
230      change option GAD_ALLOW_SOM_ADVECT to GAD_ALLOW_TS_SOM_ADV which only
231      applies to files where Temperature & Salinity 2nd Order moments are used.
232    o pkg/ptracers: add second-order moment advection schemes (80 and 81);
233      this uses a dynamically allocated internal state data structure
234      (#define PTRACERS_ALLOW_DYN_STATE in PTRACERS_OPTIONS.h)
235      and requires a fortran 90 compiler
236    
237    checkpoint59q
238    o pkg/mom_vecinv: Add energy & enstrophy conserving scheme (selectVortScheme=3)
239       (from Sadourny, described by Burridge & Haseler, ECMWF Rep.4, 1977)
240    o Refresh tutorial_global_oce_biogeo, notably:
241      - change bathymetry (put back seamounts in ACC, use hFacs)
242      - change EOS (POLY3 --> JMD95Z)
243      - use Bryan-Lewis vertical diffusivity
244      - use multidimensional advection
245      - remove old virtual virtual in dic pkg, now done through ptracer pkg
246      - change a couple of parameters in dic pkg
247    o pkg/ctrl: change formula in adctrl_bound.F and add a parameter to ctrl_map_ini_gen.F
248    o pkg/obcs: change default to OBCSfixTopo = .true.,
249      - set OBCSfixTopo=.false. in exp4/input/data.obcs to reproduce old result
250      - replace "debugMode" with "debugLevel .GE. debLevB"
251    o implementation of TAF directives for gchem,cfc,dic
252    o remove "exp5" (replaced by tutorial_deep_convection).
253    o pkg/obcs: add code to fix topography gradients normal to open boundaries;
254      this requires computing the index fields OB_Jn/Js/Ie/Iw in obcs_readparms;
255      the code can be turned on by setting OBCSfixTopo = .true. in data.obcs
256      --> changes results in exp4, seaice_obcs
257    o tutorial_deep_convection :
258      update the set-up and increase resolution and domain size ; start
259      from pseudo initial conditions = output at t=120mn in order to see
260      something happening when running testreport.
261    o pkg/seaice: add os7mp as an advection scheme
262                  add check for advection schemes
263                  add a flag for restoring T and S underneath sea ice
264    o pkg/my82: add netcdf-support and diagnostics
265    o thsice pkg:
266      - Now hsMax limits snow height by turning it into ice following
267        flooding scheme (and now conserving energy)
268      - Slight rewriting of the formula in thsice_calc_thick.F
269      - Parameter rhowi eliminated to be replaced by floodFac = (rhosw-rhoi)/rhos
270      --> changes results of global_ocean.cs32x15.icedyn and global_ocean.cs32x15.thsice
271    
272    checkpoint59p
273    o gchem / dic / cfc :
274      - add useDIC, useCFC , read from "data.gchem" (& hold in GCHEM.h);
275      - add new parameter files: "data.dic" & "data.cfc" ;
276      - various re-arrangement in initialisation & header file ;
277      - fix tutorial_global_oce_biogeo for multi-threaded test.
278    o pkg/dic: test for "pickup_dic" file when restarting ;
279      if no pickup-file, can restart with a re-initialised pH (same as it did
280      before) providing pickupStrictlyMatch is set to False.
281    o change argument list of S/R PTRACERS_WRITE_PICKUP & MYPACKAGE_WRITE_PICKUP
282      + fix call to S/R GGL90_WRITE_PICKUP & DIC_WRITE_PICKUP
283    o add a "warning" (to Error msg file) when an Active Tracer is not using AB-2
284      and staggerTimeStep is off (needed for stability of Internal-wave dynamics).
285    o move out of PARAMS.h & data the last pieces of old-ptracer code: tauTr1ClimRelax,
286     & lambdaTr1ClimRelax ; put those 2 params in PTRACERS_PARAMS.h & data.ptracers
287       (note: not clear to me what lambdaTr1ClimRelax is still used for ...)
288    o pkg/mom_vecinv: - new parameter "selectVortScheme" to select which
289       scheme to use for vorticty-term ;
290     - compute upwindVorticity=T case within mom_vi_u/v_coriolis_c4.F
291       (with default selectVortScheme, return to original discretisation)
292     - remove weird combination (e.g.: upwindVorticity & highOrderVorticity)
293    o pkg/seaice: add a line to the summary to indicate grid type (B/C)
294    o in mom_calc_visc, fix average value of viscAh_W & viscA4_W next to the
295      bottom ; only used with variable horizontal viscosity and non-hydrostatic.
296      also fix diagnostics VISCAHW & VISCA4W.
297    
298    checkpoint59o
299    o dome/code/obcs_calc.F: avoid division by zero (detected using gfortran).
300    o change the loop ordering in most gad_*_adv_x.F to improve vectorization:
301      move a few statemens out the main loop into separate loops
302    o pkg/shelfice:
303      - sort out freshwater flux; convert freshwater fluxes to mass fluxes
304        (kg/m^2/s), does not break tests, because in verification/isomip,
305        rhoConstFresh=rhoConst (by accident)
306      - rearrange computation of tLoc, sLoc, pLoc to make code more efficient
307      - move S/R find_rho_scalar, pkg/ecco/sw_ptmp.F, pkg/ecco/sw_adtg.F into
308        new file model/src/seawater.F, so that they are available for all pkgs.
309      - convert potential temperature into in-situ temperature. This changes the
310        isomip tests => update tests
311    o add a flag writePickupAtEnd (default=true) to be able to suppress
312      writing a pickup at the last timestep
313    o tools/mpack-1.6 :
314      - disable automake (not working) and autoconf (not needed).
315      - update to version 1.6.4 which fix MD5 code on some 64 bits platforms
316        also cleaner with much less compilation warnings.
317    o pkg/profiles:
318      rename profiles_interp_mean_genericgrid as profiles_interp_mean_gg
319      (for "less than 32 characters name" compiler requirement)
320    o pkg/obcs and pkg/exf: added capability to specify seaice open boundary
321      conditions that have a different sampling frequency than S/T/U/V obcs
322    o pkg/diagnostics (stats-diags):
323      - fix global Min/Max in case 1 processor get only empty tiles
324    o genmake2: replace (4 times)
325         make genmake_tc_1.o >> genmake_warnings 2>&1
326      with
327         COMM="$CC $CFLAGS -c genmake_tc_1.c"
328         echo $COMM >> genmake_warnings
329         $COMM >> genmake_warnings 2>&1
330      to make genmake2 always see the value of CC as specified in the optfile.
331    o generic_advdiff: - prather advection scheme (SOM) coded for CS-grid.
332      - add diagnostics for 1srt & 2nd Order moments and sub-grid variance.
333      - modify verification advect_cs test to test SOM-advection on CS-grid.
334    o pkg/ctrl:
335      - Rewrite of ctrl_map_ini_ecco.F,
336        introducing a generic routine (ctrl_map_ini_gen.F).
337      - Modification of ctrl_bound/adctrl_bound handling control vector bounds.
338    
339    checkpoint59n
340    o pkg/diagnostics: for large number of diagnostics, store diagnostic mate
341      number in dedicate array "hdiag":
342      - new version of S/R DIAGNOSTICS_ADD2LIST : DIAGNOSTICS_ADDTOLIST
343        with 1 more argument (mate number); modify old version DIAGNOSTICS_ADD2LIST.
344      - many small changes (integer format) for large number of diagnostics
345      - start to use DIAGNOSTICS_ADDTOLIST (necessary for diagnostics with
346        a counter mate) in pkg diagnostics, ptracers, thsice & aim_v23.
347    o add parameter rotateGrid and Euler angles EulerPhi/Theta/Psi. For
348      usingSphericalGrid, this allows to define the rotated grid coordinates
349      via phiMin/thetaMin/dxSpacing/dySpacing, etc., but then re-compute the
350      geographical coordinates according to the inverse of the rotation defined
351      by the Euler angles, so that Coriolis parameter and online-interpolation by
352      exf works with the geographical coordinates on XC/YC/XG/YG.
353      Naturally, this feature does not work with all packages, so some
354      combinations are prohibited in config_summary (flt, flt_zonal, ecco,
355      profiles), because there the coordinates are assumed to be regular
356      spherical grid coordinates.
357    o pkg/gmredi,ctrl,ecco,autodiff,grdchk and model/src,inc:
358      - introduce isopycnal diffusion coefficient control.
359    o tools/adjoint_options:
360      - additional control vector components.
361    o pkg/mnc: have mnc create marginally meaning full coordinate variables
362      (that is the grid indices) if usingCurvilinearGrid and NOT EXCH2
363    o pkg/mypackage:
364      - add example of read/write pickup for state-var ;
365      - add entry points to the main code for state-vars diags & write-pickup.
366    o pkg/exf: rewrite of exf_getffieldrec.F to properly deal with year
367      transitions for useExfYearlyFields
368      - add new subroutine that determines the file to read from for
369        use*YearlyFields = .TRUE. and .FALSE.
370      - add a verification experiment to global_with_exf that tests
371        useExfYearlyFields with USE_EXF_INTERPOLATION defined
372    o pkg/obcs/exf: add useOBCSYearlyFields (=.FALSE.) to obcs with exf in
373      analogy to useExfYearlyFields; rearrange obcs_prescribe_read: two new
374      subroutines (which could be generated from a template, because they are
375      almost identical), for now they are included in obcs_prescribe_read.F for
376      simplicity
377    o pkg/exf:
378      - add a little more diagnostic to exf_interp_read (in analogy to
379        mds_read_field, can be turned off with debugLevel < debugLevA=1)
380      - improve vectorizability of exf_interp for TARGET_NEC_SX, makes code
381        ugly but fast by unrolling short inner loops, inserting a unroll=8
382        directive in routine lagran, and splitting a loop and making do while the
383        outermost loop (the latter requires the intoduction of index arrays)
384    o pkg/obcs: replace obcs_apply_area/heff/hsalt/hsnow with obcs_apply_seaice
385    o pkg/seaice: moved DIFFERENT_MULTIPLE from seaice_model to seaice_dynsolver
386      http://forge.csail.mit.edu/pipermail/mitgcm-devel/2008-January/003173.html
387    o verification/seaice_obcs: updated for restart test and latest options
388    o pkg/seaice: add a new flag SEAICEuseTEM to use a slightly different
389      ice rheology (so-called truncated ellipse, that gets rid of tensile stress);
390      for now this is only available for the C-grid code and also within
391      #ifdef SEAICE_ALLOW_TEM, because this option may slow down the EVP code
392    
393    checkpoint59m
394    o pkg/seaice: use different time constant for melting (SEAICE_gamma_t)
395      and freezing (SEAICE_gamma_t_frz) ice due to mixed layer temperature
396    o gad_som : fix flux output (& diagnostics) to have same units as other  
397      advection scheme fluxes (was previously multiplied by deltaT).  
398    o added verification/seaice_obcs both to test seaice open boundaries
399      and to provide an example matlab scrpt for generating them
400    o added verification/lab_sea/input.salt_plume for testing pkg/salt_plume
401    o pkg/salt_plume: clean up salt_plume_frac.F to
402      remove redundancy in PlumeMethod 1 and 4
403    o pkg/kpp: added saltplume diagnostics
404    o pkg/obcs and pkg/seaice:
405      - do not set uice and vice to zero when OB*icefile are unspecified
406      - OBCS_SEAICE_AVOID_CONVERGENCE is undefined by default
407      - moved seaice tracer obcs after call to seaice_growth
408    o pkg/salt_plume: added various options for salt plume depth
409      criterion and for vertical distribution of the salt
410    
411    checkpoint59l
412    o pkg/ptracers: new version of ptracers pickup:
413      read meta file and write only fields which are needed to restart.
414      ( same logic as main pickup file ; also using pickupStrictlyMatch )
415    o pkg/seaice:
416      - add timescale for melting due to warm mixed layer as a means of
417        setting SEAICE_availHeatFrac more conveniently
418      - add a CPP-flag/runtime parameter check for flooding algorithm
419      - reformulated availHeat in seaice_growth.F to be independent of AREA
420    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
421      unit changes
422    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
423    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
424      SX vector computer.
425    o pkg/seaice:
426      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
427        seaice forcing fields can now be read only through pkg/exf
428      - removed some unused halos
429    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
430    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
431      or U/VICE from U/VWIND before computing U/VSTRESS
432    
433    checkpoint59k
434    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
435      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
436    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
437      all experiments pass when compile with un-initialised var. checking option.
438    o added pkg/salt_plume
439    o script to test restart (for now, in MITgcm_contrib/jmc_script)
440    o pkg/seaice: new read/write pickup version.
441      read meta file and write only fields which are needed to restart.
442      ( same logic as main pickup file ; also using pickupStrictlyMatch )
443    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
444    o lab_sea.hb87: modify the domain & update output.hb87.txt :
445      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
446      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
447      process. Fixed here by closing the domain at the Northern boundary.
448    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
449    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
450      a set of consecutive levels in/from a 3-D array.
451    o pkg/ptracers:
452      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
453      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
454    
455    checkpoint59j
456    o in pkgs: dic, obcs, offline, rbcs:
457      standard way to compute coeff. for time interpolation between 2 time reccords
458      which retains full precision (& make results less dependent on compiler).
459      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
460    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
461      packages instead of reading ice cover and wind speed separately
462    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
463     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
464      to allow to compile customized code before the update)
465    o cleaning-up:
466      - fix CPP instruction syntax in pkg/obcs
467      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
468        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
469      - fix some threads issue in IO parts.
470    o pkg/dic:
471      - add tons of "_d 0" (--> much better testreports !)
472       and then update outputs of tutorial_global_oce_biogeo
473    o pkg/mom_fluxform:
474      add a special version of momentum advection intended to conserve momentum
475      next to a bathymetry step or a coastline edge. (default = off = #undef)
476    o new read/write pickup version:
477      - for now, only implemented for main (mdsio) pickup file.
478      - write out only what is needed to restart; merge pickup_nh , pickup_ph
479        and main pickup together.
480      - read meta file; read only what is needed to restart; stop if a field
481        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
482        if it make sense (even if the restart is not perfect).
483      - if no meta file, assume that pickup to read corresponds exactly to
484        a pickup that would currently be written.
485      - read pickup written in the old format (until checkpoint59i) if it
486        recognizes an old meta file (no field-list).
487      - add a meta file in exp. which starts from a pickup: 2 cases:
488        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
489         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
490        b) a meta file describing the content of the associated pickup file
491         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
492    o pkg/mdsio & pkg/rw:
493      - new routine to read a meta file ; new set of routine to read
494        Multiple-fields file (with meta file).
495    o added open boundary conditions capability for seaice
496        HSNOW, HSALT, UICE, and VICE
497    
498    checkpoint59i
499    o adjoint:
500      * fix multiDimAdvection adjoint
501        (partial recomputation problem by TAF for fVerT(:,:,kDown)
502        and comlev1 size definition (maxpass vs. max. number of tracers)
503      * verification/global_ocean.90x45x15 adjoint now tests
504        NLFS and multiDimAdvection using DST3 (=30)
505      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
506    o pkg/kpp: add "_d 0" to real constant (if missing);
507      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
508      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
509    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
510      for internal parameters related to restart process (formerly from PARAMS.h)
511      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
512    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
513      as argument. (only atm2d & obcs write_pickup have not yet been updated)
514    o pkg/monitor:
515      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
516      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
517      - account for deep Atmosphere factor and density factor (anelastic)
518    o added open boundary conditions capability for seaice HEFF and AREA
519    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
520      thermodynamics
521      - requires a little reorganization, which affects the testreport results
522        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
523        so that now the conservative form is tested
524      - add a few comments
525    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
526    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
527    o add new diagnostics to seaice: advective, diffusive fluxes (only for
528      multidim-advection, for scheme 2 they are not filled) and transports,
529      thermodynamic growth rates
530    o change units of EmPmR (inside the code, + within coupling interface)
531      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
532      Affects results @ truncation level (cg2d match) and update output of
533       experiments: lab_sea(6), global_ocean.90x40x15(10),
534      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
535      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
536      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
537      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
538    
539    checkpoint59h
540    o pkg/exf:
541      - improve vectorization by moving if-statement out of loops in
542        exf_mapfields, exf_radiation
543      - exf_bulkformulae.F: introduce 2D fields and vectorize code
544    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
545    o testreport:
546      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
547        monitor & update offline_exf_seaice exp. output.
548      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
549    o pkg/seaice:
550      - bug fix in the evp solver: boundary conditions were affected be
551        masking of zMax/zMin (changes results)
552      - minor bug fix in boundary conditions in seaice_calc_strainrates
553        (changes results for no_slip)
554      - seaice_lsr.F: make interpolation of eta dependent on boundaries
555      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
556      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
557        stress formulation and no-slip boundary conditions
558    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
559      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
560    o pkg/seaice: a first HSALT time stepping equation has been checked in
561    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
562      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
563      without requiring DO-IF statements
564    o pkg/thsice:
565      use continuous power-law function for partition of energy between lateral
566      melting/freezing and thinning/thickening ; old code using step function
567      still available with #undef THSICE_FRACEN_POWERLAW
568      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
569    o testreport: change AD testing : check against results/output_adm.txt
570      using same scripts as for forward test.
571    
572    checkpoint59g
573    o adjoint testing: in preparation for changing testreport:
574      - output format: cost and grad written on separated lines
575      - ad output results in directory "results" (instead of "results_ad")
576    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
577    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
578    o pkg/ecco: allow user defined cost function contributions
579    o testreport:
580      Allow to choose (per experiment) the list of tested output variables
581       and the main variable (used to issue a pass/FAIL ) ;
582      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
583      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
584      Also modify printing of summary:
585       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
586       b) echo the list of tested variables in the individual summary.txt of
587          each experiment.
588    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
589      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
590      (but still depend on the tile decompostion of the domain).
591    o pkg/seaice: change a discretization detail to make the B-grid code
592      "more symmetric". This change is likely to remove all "ridges/leads" that
593      where quasi-aligned with the grid in B-grid solutions. It may also be
594      the solution to the stress coupling issues with the B-grid.
595    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
596      remove .cvsignore from input dir. (since testreport no longer run here).
597    o pkg/thsice:
598     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
599     - fix reshaping of sea-ice just after advection:
600       melt all the ice only if ice-volume is too small.
601     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
602       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
603     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
604    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
605      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
606    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
607      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
608      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
609      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
610      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
611      -> update output.txt
612    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
613     this affects truncation error: -> update output.txt of exp:
614      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
615      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
616    
617    checkpoint59f
618    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
619    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
620      a bounded range (in forward mode)
621    o pkg/ecco, ctrl, autodiff and mom_common:
622     internal parameter controls, completements of implementations
623    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
624    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
625      (not seem any difference in testing results).
626    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
627       at face corners.
628    o pkg/generic_advdiff:
629     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
630      loop range indices for computing vertical advection tendency
631      and do the calculation in the interior only (no overlap) ;
632      for now, only implemented for SOM advection (to save CPU time).
633     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
634    o exch2 adjoint
635      First set of changes:
636      - add exch2 hand-written adjoint templates
637      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
638        This will require cleanup in pkg/autodiff/*.F
639        (changed routines currently kept separate in verif. code/)
640      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
641        that used to hide exch2 or cubed-sphere specific code
642        (commented via 'cph-exch2')
643    o pkg/seaice
644      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
645    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
646       output of global_ocean.cs32x15.thsice .
647    
648    checkpoint59e
649    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
650      for B-grid vector (not yet tested) and C-grid vector (<- only used
651      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
652    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
653      (#ifdef ALLOW_SALT_PLUME)
654    o gather_2d/scatter_2d: removed halo regions
655    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
656      scheme and the corresponding test case (under front_relax dir). For now,
657      only available with Skew-flux form and not yet tested in realistic set-up.
658      adjoint: store directives updated, but gradient checks deteriorated,
659      so maybe GM/Redi adjoint is now broken.
660    o seaice adjoint
661      * add AREA, HEFF, HSNOW as control variable
662        (should not change lab_sea results)
663      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
664    o pkg/seaice:
665      * added computation of saltFlux in seaice_growth;
666        For time being, sea ice salinity is assumed constant
667        contribution of snow flooding to freshening of sea ice is neglected.
668        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
669        defaults to 0.0 in order to maintain backward compatibility.
670        Typical values for SEAICE_salinity are 4 to 10 g/kg.
671      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
672      * added SEAICE_availHeatFrac, which specifies fraction of surface level
673        heat content used to melt or grow ice
674      * commented out cap of HICE: it helps keep ice thinner
675      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
676      * applied OBCS T/S mask to HEFFM sea ice mask
677    
678    checkpoint59d
679    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
680     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
681     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
682    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
683     and change default value of parameter "GM_Small_Number";
684     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
685       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
686       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
687    o pkg/ecco: cost function when applying pkg/smooth to controls
688    o pkg/ctrl: add forcingPrecond run time parameter
689    o pkg/seaice:
690     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
691     - fix bug in metric terms of u-equation in LSR solver (implicit part),
692       changes verification/lab_sea
693     - rearrange implicit part of u-equation in LSR solver to make it easier to
694       read, understand, and debug. This causes changes at the truncation level.
695     - fix (serious) bug in the boundary conditions (sign error in the implicit
696       part) of the LSR solver. Changes all LSR results.
697     - fixed problem with HSNOW initialization to avoid thick snow when AREA
698       is initilized with small values - does not change lab_sea results.
699     - added HsnowFile initialization capability
700    o pkg/smooth: addition to model/src and pkg/ctrl so allow
701     initialization of pkg/smooth and application to control vector
702    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
703    o dependencies: pkg/profiles requires pkg/cal
704    o pkg/profiles:
705     - added option ALLOW_PROFILES_GENERICGRID
706         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
707         that interpolation information (grid points and coefficients) is provided
708         within the netcdf input files.
709         -> sample matlab scripts can be found in MITgcm_contrib/gael
710         that allow you to prepare netcdf input files.
711     - also modified: cleaner include statements, cleaner error print statements,
712       cleaner stops when error, and more tests of the netcdf input files consistency.
713    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
714    o pkg/seaice:
715     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
716       requires a new routine: seaice_diagnostics_fill.F
717     - make sure that seaice does not move if not forced (pressure replacement
718       method, Hibler and Ip, 1995), changes results
719     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
720     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
721       It is turned off by default (=-1.), because it changes the results.
722     - make it possible to read AREA from a file, too.
723    
724    checkpoint59c
725    o add S/R and diagnostics for oceanic mixed-layer depth
726    o move GMRedi call after all vertical mixing schemes (including KPP)
727    o pkg/thsice:
728     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
729      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
730    o pkg/obcs:
731     - bug fix for balance code
732    o pkg/seaice:
733      - allow values of SEAICE_elasticParm > 1
734      - add new parameter SEAICE_evpTauRelax as an alternative
735        to SEAICE_elasticParm
736      - make lsr boundary conditions free slip (by default), changes result
737      - add code for no slip boundary conditions for lsr
738      - set minimum of zeta to zero (and not 4e8) (changes results)
739      - add a cap on AREA after advecting AREA if seaice_growth is not called
740    o change calculation of Visbeck K:
741      - no longer depend on tapering scheme; instead, compute slope (limited
742        by GM_maxSlope). this is equivalent to what was comuted before with
743        clipping or linear tappering.
744      - fix vertical averaging (wrong by 1/2 level)
745      - leave the old version (but will not be maintained) within
746        #ifdef OLD_VISBECK_CALC / #endif
747      - update output of exp. ideal_2D_oce
748    o change error catch in calc_r_star to improve vectorization
749    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
750      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
751    o adjoint:
752      Re-organized adjoint checkpointing according to Matt Mazloff
753      (but with modifs/completions/cleanups)
754      Storing is now bundled into large arrays to optimized I/O
755      (and second step in cleanup of the_main_loop)
756    
757    checkpoint59b
758    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
759      - export/import (between ocean & coupler) fields needed for ocean DIC.
760    o pkg/seaice:
761      - get rid of three more exchanges seaice_calc_viscosities (required
762        different loop boundaries in seaice_lsr and seaice_ocean_stress)
763      - bug fix in seaice_ocean_stress (update of lab_sea required)
764      - reduce loop boundaries to necessary minimum also in seaice_evp
765      - go back to the old way of computing deltaC/Z as the adjoint likes that
766        better
767    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
768      passive tracer to an Age Tracer) + update output.txt
769    o pkg/exf:
770      - implement A-grid / C-grid selection for wind-stress input files.
771      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
772      for now, in exf_bulk_largeyeager04.F only :
773      - change implementation for case where windspeed + 2. components wind-stress
774        are read-in. AND use rhoConstFresh to convert evap.
775    o pkg/seaice:
776      - use correct EXCH_UV for wind-forcing (on A-grid).
777      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
778        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
779    o pkg/exf:
780      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
781      EXF_INTERPOLATION:
782      - merge global_with_exf/code version of exf_interp_read.F
783        to the main code ;
784      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
785        reading the file ; Important: This options needs to be defined to recover
786        previous code.
787        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
788      - no longer loose real*8 precision along the way when using exf_iprec=64.
789    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
790      - change discretisation of evp-solver in order to avoid another exchange
791        (changes lab_sea) and clean up a little
792      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
793        help the adjoint (this also changes the results slightly)
794      - add a few "_d 0" where they had been missing in seaice_evp.F
795      - cleaning up: remove unused seaice_calc_rhs.F
796    o pkg/exf: some cleaning-up:
797      - change various "constants" into runtime parameters
798      - cleaned-up Large&Yeager04 routine which should eventually
799        replace exf_bulkformulae.F (changed names of S/R and CPP)
800        and merged various ALLOW_ATM_WIND options
801     only used with thsice pkg (in thsice_get_exf.F):
802      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
803        which are used when useStabilityFct_overIce=TRUE (= the default)
804      - change default values of ice & snow emissivity and scale downward LW
805        by ice & snow emissivity.
806    o pkg/thsice:
807     fix few little problems, in thsice_calc_thickn.F:
808      - growth vertically (and not laterally) if iceFrac == iceMaskMax
809      - melt only laterally if hIce < hThinIce (as the comments say)
810      and in thsice_extend.F:
811      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
812      - start to form ice as soon as the minimum ice-volume is reachable.
813     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
814      and cpl_aim+ocn
815    o pkg/kpp
816     - move computation of surface related input fields to KPP into a new
817       subroutine kpp_forcing_surf.F
818     - remove wrong (within bi,bj loops) EXCH calls.
819     - little cleaning (add argument myThid in last position, cvs header ...)
820     - for now, fix conservation problem by exchanging KPPviscAz (may not
821       be the best fix)
822    o pkg/seaice
823     - check for inconsistent evp parameter/cpp-flag combination
824     - remove leftover errIO flat for obsolete name list error handling
825    o OpenAD
826     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
827    
828    checkpoint59a
829    o pkg/seaice: some parameter clarifications and a little bit of clean up
830    o pkg/thsice: rename run-time parameters:
831       himin       -> hIceMin
832       himin0      -> hThinIce
833       hihig       -> hThickIce
834       i0          -> i0swFrac
835       transCoef   -> bMeltCoef
836       frac_energy -> fracMelting
837      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
838       with default values (for now) that do not change the results.
839      remove old version of thsice vars advection in pkg/seaice.
840    o in FFIELDS.h:
841      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
842      - make pLoad & sIceLoad always available (but still only used if
843         ATMOSPHERIC_LOADING is #define).
844    o pkg/kpp: replaced _KPP_RL with _RL
845    o bug fixes for vertical diffusivity computations when both KPP and
846        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
847        are no longer updating the vertical diffusivity array
848        (passed as argument) but are (re-) setting those arrays.
849    o pkg/seaice: fix bug in evp solver, while doing that
850      - change (improve?) discretization of stress computations for both
851        cgrid-lsr and evp solver
852      - add a new routine to compute strain rates
853      - the above changes lab_sea results
854      - add no slip conditions for evp solver (off by default), lsr-version
855        may follow
856      - fix exchange for shear at Z-points (does not change lab_sea)
857      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
858        (to force the user to pick a time step since there is not "safe" way
859        of choosing it)
860      - add principal stress diagnostics
861      - rearrange fields for evp a little to avoid having to call a: too many
862        exchanges and b: exchanges for stress trensor components which we do
863        not have.
864      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
865        of evp, complete rewrite for lsr case (latter is does not yet work
866        in all cases)
867    o pkg/kpp: add code to have mixing in shelf ice caverns
868      - add myThid to all kpp routines (long overdue)
869    
870    checkpoint59
871    o pkg/exf:
872      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
873        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
874      - move exf header files from lower_case.h to UPPER_CASE.h ;
875        add missing cvs Header & Name
876      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
877      - add namelist param. selectStressGridPosition, exf_monFreq
878      - retire many _CLIM routines, and remove data.exf_clim
879        + params moved to data.exf
880        + climsst, climsss now handled by exf_set_gen, i.e.
881          climss?period=0 refers to constant field,
882          climss?period=-12 to monthly forcing
883      - split up namelists in data.exf
884    o pkg/seaice:
885      - remove seaice_exch and seaice_exch_uv
886      - remove superfluous exchange of theta
887      - add myThid to seaice_budget_ocean/ice
888      - add new interface for atmospheric wind forcing (C-grid only)
889        + new routine
890        + two new field (taux, tauy for stress over ice)
891        + removed one global field (DAIRN) for C-grid case only
892    o pkg/thsise
893      - 2nd set of modifs for thsice adjoint in conjunction with exf
894    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
895    
896    checkpoint58y_post
897    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
898      vertical diffusivity, similar to that in MOM4; turned on using
899      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
900      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
901    o Added capability for 3D specification of background vertical diffusion
902      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
903      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
904      "data" file that contains the 3D vertical diffusivity coefficients.
905    o ice dynamics (pkg/seaice) with thsice thermodynamics:
906      - add code within pkg thsice to advect & diffuse sea-ice fields
907      similar to (and will replace) what has been added in  seaice_advdiff.F,
908      but: - conserving Mass, Heat & Salt.
909           - better when using non-linear advection scheme (not yet fully tested)
910           - can also be used in atmospheric set-up (for now, only the diffusion).
911    
912    checkpoint58x_post
913    o IO option for global-file compact format:
914      - add options when generating topology (utils/exch2/matlab-topology-generator)
915      - add I/O capability (pkg/mdsio).
916      - adapt utils/matlab/rdmds.m to read this format.
917      for now long-line format not yet supported by pkg/mdsio (& exch2).
918    o shelfice: add a few diagnostics
919    
920    checkpoint58w_post
921    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
922      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
923      (and replace horiVertRatio in NH code).
924      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
925                         and tutorial_plume_on_slope (sensitive to truncation)
926    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
927      directly to drive seaice model (C-grid only)
928    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
929     - reintroduce computation of wind from stress,
930     - compute tau (in exf_bulkformulae.F) from windstress averaged to
931       mass points to avoid tau = 0
932     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
933    o rdmnc.m: make it work with "global" files created with gluemnc
934    o rdmnc.m : some improvements in dealing with singleton dimension
935      (tested on all testreport mnc output files).
936    o genmake2: disable pkg/profiles if netcdf test fails.
937    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
938    o move call to cal_readparms up to make calendar parameters/variable available
939      to all packages
940    
941    checkpoint58v_post
942    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
943      useDynP_inEos_Zc tested.
944    o pkg/exf: changes to properly interpolate/mask/scale initial fields
945    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
946      and portions thereof.  See read_cs.txt for description and examples.
947    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
948      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
949      following the great-circle arc between those 2 points.
950    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
951      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
952    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
953     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
954     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
955     - still needs work (not working with some options ; efficiency to improve)
956       and serious testing.
957     - use this scheme for temperature & salinity in 2 advection test exp.:
958       advect_xy & advect_xz, respectively.
959    
960    checkpoint58u_post
961    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
962    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
963    o testreport: add option "-skipdir" to skip some test.
964    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
965      momentum calculation.
966    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
967    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
968      remove checkpoint.F and the_correction_step.F (no longer used);
969      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
970    o add option (linFSConserveTr) to correct for tracer source/sink due to
971      Linear Free surface
972    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
973    o pkg/thsice: fix reading mnc-pickups
974    
975    checkpoint58t_post
976    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
977    o pkg/mdsio:
978     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
979       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
980       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
981     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
982     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
983       either MDS_READ_FIELD or MDS_WRITE_FIELD )
984     - new S/R (to replace MDSWRITEMETA), which allows to write more
985       informations (variable names, time ...) to meta files.
986     - modify rdmds.m to give back the meta file content.
987    o pkg/diagnostics: change vertical interpolation to be safer, and more
988       flexible (define p-levels to interpolate to in data.diagnostics);
989      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
990       diagnostic pointer.
991    o pkg/seaice: more cleaning up of seaice_growth, added many comments
992    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
993    o fix multi-category seaice:
994     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
995       SEAICE_MULTICATEGORY
996     - fix short wave heat flux
997    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
998       and allow to use EVP solver. Change forward lab_sea: test both EVP
999       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
1000    o Initial check-in of lab_sea adjoint
1001      (very similar to natl_box_adjoint/code_seaice)
1002      * used C-grid and EVP solver
1003      * used KPP, GM/Redi
1004      * uses inAdExact=.TRUE.
1005      * gradient checks fail for both ADM and TLM
1006        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
1007        f.d. gradients actually seem more problematic than ADM, TLM gradients;
1008        issue is related to forward mismatch between g77 an ifort
1009    o pkg/seaice: overhaul of thermodynamics
1010     - growth.F and groatb.F are replaced by new routine seaice_growth.F
1011     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
1012     - move a few global fields out of SEAICE.h into seaice_growth.F and
1013       make them 2D (FICE/QNETO/ ...)
1014     - remove FO (it is the same as QNETO)
1015     - introduce a few local fields to avoid modifying external fields such
1016       as atemp, etc.
1017    
1018    checkpoint58s_post
1019    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
1020      changed exf_set_gen.F so that
1021        genperiod=0 means input file is one time-constant field and
1022        genperiod=-12 means input file contains 12 monthly means
1023    o CG2D: use pre-computed solver main-diagonal (stored in common block);
1024      this affects truncation error ; generate new output file for exp. which
1025      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
1026        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
1027        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
1028        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
1029        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
1030        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
1031    o start implementation of deep-atmosphere and anelastic formulation
1032    o verification: remove 2nd copy of input files and use script "prepare_run"
1033      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
1034  o mom_common/vecinv/fluxform: fix a few initialisation isssues  o mom_common/vecinv/fluxform: fix a few initialisation isssues
1035  o profiles: fix for multithreaded case  o profiles: fix for multithreaded case
1036    

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