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revision 1.740 by heimbach, Fri Oct 27 05:19:42 2006 UTC revision 1.1049 by jmc, Sun Jan 4 01:25:32 2009 UTC
# Line 4  $Name$ Line 4  $Name$
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    o pkg/flt:
8     - do some cleaning and fix the restart ;
9     - add output.txt in flt_example/results to get this pkg tested.
10    o genmake2: add an EXTENDED_SRC option and flag.
11       for now, cannot be turned on on command line (only through genmake_local)
12    o pkg/mdsio: read/write vector:
13     - singleCpuIO: fix RL/RS in MDSWRITEVECTOR by calling new S/R MDS_BUFFERtoRL/RS
14     - singleCpuIO=F: fix arrType & filePrec & _BYTESWAPIO in both MDSREADVECTOR
15       & MDSWRITEVECTOR by calling new S/R MDS_RD/WR_VEC_RL/RS.
16     - affects gradient of test-exp "bottom_ctrl_5x5" (not due to _BYTESWAPIO)
17      (drop to 4 digits matching for grad). But this test does not look very
18      reliable (was already failling on eddy, fc5, at 6.digits). Update output.
19    
20    checkpoint61g
21    o pkg/flt:
22      - move FLT_CPPOPTIONS.h to FLT_OPTIONS.h (standard name)
23       + make OPTIONS file more standard.
24      - rename S/R MDSREADVECTOR_FLT to FLT_MDSREADVECTOR (to mach src file name)
25      - fix _BYTESWAPIO CPP-Flag
26      - standard reading of file-parameter "data.flt"
27      - fix argument list of S/R FLT_RESTART
28      still need to fix _BYTESWAPIO in pkg/mdsio/mdsio_writevector.F
29    o pkg/obcs: fix a CPP-flag, bug reported by Jeff Blundell
30    o gather_2d.F/scatter_2d.F: suppress vectorisation on NEC SX in respond to
31      a still unfixed compiler/optimization bug
32    
33    checkpoint61f
34    o pkg/seaice, LSR solver: fix bug in GLOBAL_MAX calls ;
35      update results of global_ocean.cs32x15.icedyn test.
36    o move getcon.F from model/src to pkg/fizhi.
37    o pkg/exf: add parameter for extrapolation of temp up to the surface
38       and option to prevent negative evap (in bulk_largeyeager04 only).
39    o Prather Advection scheme: fix tracer conservation for divergent flow
40      (e.g., when using NonLin Free-Surface).
41    o kpp: retire KPPmld diagnostics --> use MXLDEPTH instead
42    o gmredi (Visbeck-variable-K):
43     - add more parameters to Visbeck-variable-K.
44     - use a 5 points average for dSigmaR in Visbeck-K calculation
45       (more "homogenous": same stencil and same weights as in dSigmaH)
46     - update output of ideal_2D_oce experiment.
47    o fix CPP-flag REAL4_IS_SLOW, when _RS expands into real*4
48      (#undef REAL4_IS_SLOW)
49     - pkg/mnc/mnc_cw_cvars.F: write _RS-grid variable as netcdf-real*4
50       coordinate variable
51     - pkg/monitor/monitor.F: call mon_printstats_rs for _RS variables
52       (surface forcing fields), removes some of the functionality
53     - model/src/write_grid.F: write _RS variables as RS-netcdf variables
54     - model/src/diags_oceanic_surf_flux.F: fix a few diagnostics, but
55       probably not all: copy _RS surface flux fields to RL field before
56       calling DIAGNOSTICS_FILL
57     - model/inc/CPP_EEMACROS.h: make the _EXCH_*_RS macros expand into
58       real*4 (CALL EXCH_*_RS) versions.
59     - tested in 2 experiments: inverted_barometer & solid-body.cs-32x32x1
60       (generate new output).
61    
62    checkpoint61e
63    o gmredi (Visbeck-variable-K):
64      - fix the "OLD_VISBECK_CALC" option + move the #undef to GMREDI_OPTIONS.h
65      - change computation of Visbeck-K where Slope > Smax :        
66        now: N*min(Slope,Smax) (similar to OLD_VISBECK_CALC with gkw91 taperFct)
67        previously was: M*sqrt(min(Slope,Smax)) ; update ideal_2D_oce output.
68    o bottom-drag in P-coord.: change units of bottomDragLinear & bottomDragQuadratic
69      to be the same as with Z-coord. (i.e., m/s & no-units respectively).
70    o calc_viscosity: fix index range (was wrong for CD-Scheme & explicit Visc)
71    o pkg gmredi, linear & fm07 tapering: put an upper limit on Slope^2 so that Kwz
72      does not become too large (to avoid precision problems in implicit-diffusion
73      solver); update ideal_2D_oce output.
74    o pkg ggl90:
75      - in ggl90_cal.F: compute only one set of visc/diff, used to
76        step forward TKE/T/S/momentum
77      - default value of GGL90viscMax/GGL90diffMax larger and equal (to
78        have Prandlt =1)
79    o gmredi (fm07):
80      - add lower limit on Transition layer thickness + lower limit on 1/lambda
81      - allow to set few more params from data.gmredi
82    o pkg ggl90:
83          - add missing sqrt(2) factor in computation of mixing length
84            scale in ggl90_calc.F
85            (see Eq. (2.35) in Blanke and Delecluse, JPO, 1993)
86    
87    checkpoint61d
88    o adjoint modifs
89      - adapt to new field rhoInSitu
90      - allow to revert from StoreDynVars2D, StoreDynVars3D
91        to individual fields
92        (switches AUTODIFF_USE_OLDSTORE_2D, AUTODIFF_USE_OLDSTORE_3D)
93    o store 3-D (in-situ) density in commom block (DYNVARS.h)
94     - save 1 rho computation.
95     - no longer modify T & S inland when using down_slope pkg.
96    o gad_som : allow to switch to SOM advection for T & S without corresponding
97      pickup files (using new S/R: MDS_CHECK4FILE).
98    o keep removing _BEGIN/_END_MASTER between MDSIO S/R call
99      (for useSingleCpuIO to work in multi-threaded)
100    o pkg/shelfice:
101     - disentangle parameters: retire shelfIceFile in data/PARM05 and substitute
102       with SHELFICEtopoFile in data.shelfice
103     - move code for reading ice shelf topography and modifying hFacC into separate
104       subroutines of the shelfice package
105     - separate initialisation of "fixed" and "variable" variables
106     - kTopC is not (yet) replaced by kSurfC, although this is possible
107    o fix broken diagnostic SIatmFW and changed the units from m/s to kg/m^2/s
108    o add initialisation of deepFac if using Pcoords (new S/R set_grid_factors)
109      and rename:
110      ini_phiref.F          --> set_ref_state.F  (+ set anelastic factors)
111      ini_reference_state.F --> load_ref_files.F (- set anelastic factors)
112    o change FIND_RHO_SCALAR : return rho (instead of rho - rhoConst)
113    
114    checkpoint61c
115    o add option ALLOW_ADDFLUID and run-time selector "selectAddFluid"
116      to add mass source/sink of fluid in the interior (3-D generalisation
117      of oceanic real-fresh water flux).
118    o pkg/monitor: fix recip_dr argument in mon_advcflw2 call (-> advcfl_W_hf_max)
119    o vermix test experiment: switch from LINEAR EOS to MDJWF (not tested before)
120    o new pkg: down_slope
121      density-driven downsloping flow parameterisation (Tellus, 1999, 412-430).
122      - presently, modify T & S inland (dwnslp_calc_rho.F).
123        can be avoided if rho was stored in common bloc and used in calc_phi_hyd.
124      - implementation for ocean in P-coords not tested.
125      - add secondary test to global_ocean.90x40x15 (input.dwnslp) to check this pkg.
126    o move kSurfC,kSurfW & kSurfS from SURFACE.h to GRID.h (next to kLowC)
127      (to facilitate conversion of oceanic pkg to p-coordinate).
128    o change FIND_RHO to FIND_RHO_2D :
129      pass arguments tFld & sFld as local (tile) 2D-arrays ; +fix EOS_CHECK.
130    o new pkg: cheapaml
131    
132    checkpoint61b
133    o exch2:
134      change index bounds in rx2_cube exchanges (new S/R: EXCH2_GET_UV_BOUNDS)
135      - no longer depend on the order sequence (N,S,E,W).
136      - 3rd exchange no longer needed (tested with 24 tiles).
137      - same modif to hand-written adjoint S/R (global_ocean.cs32x15: zero diff)
138      - exch_UV_A-grid readily available (but not yet tested).
139      comment out 3rd exch call and remove copy of V to U at SE & NE face-corners
140      (both are no longer needed) in exch_uv: no effect in forward run; but
141       get truncation error differences with adjoint exch.
142    o exch2:
143     - change index-bounds storage (moved from target to local tile,
144       more intuitive this way) ; rename/remove some variables.
145     - change utils/exch2/matlab-topology-generator & code_mods accordingly.
146    
147    checkpoint61a
148    o exch2/matlab-topology-generator:
149      fix bug in index bounds for N-S internal exchange (hard to tell if this
150      had any effect on the solution).
151    o pkg/mnc: small fix in mnc_handle_err: make sure that length of msgbuf
152      is exceeded
153    o testreport: modify syntax of awk, so that it works also with
154      awk, and not only with nawk and gawk
155    
156    checkpoint61
157    o autodiff
158      Change default for TAF usage by removing argument '-nonew_arg'
159      This changes TAF subroutine argument list (ordering of active var.)
160      Omission of this flag leads to incompatibility w.r.t. TAMC
161      To restore TAMC-compatibility, need following modifs:
162      * use adoptfile tools/adjoint_options/adjoint_tamc_compatibility
163      * use CPP option #define AUTODIFF_TAMC_COMPATIBILITY
164      Tested TAF version is 1.9.22
165      N.B.: exch2 hand-written adjoint code currently not TAMC compatible
166    
167    checkpoint60
168    --->>> This is the last checkpoint for which generating the adjoint
169    --->>> is done via the TAMC-compatibility TAF-flag "-nonewarg"
170    --->>> by default.
171    --->>> Future checkpoints will ommit this flag by default.
172    o pkg/generic_advdiff, os7mp: simplify and avoid division by zero.
173    o pkg/grdchk: Add gradient check to etan0 perturbations.
174    o pkg/exf: read ice area from file (#ifdef ALLOW_ICE_AREAMASK).
175    o pkg/autodiff: more flexibility in zeroadj.
176      model/src: modifying do_oceanic_phys.F accordingly.
177    o pkg/ctrl: Bounds for (kapgm,kapredi,eddypsi) parameter estimation.
178    o model/src and pkg/gmredi: GMREDI_WITH_STABLE_ADJOINT CPP option
179      special setup of gmredi for which the adjoint is stable
180      enough for parameter optimization.
181    o bridging the gap between eddy stress and GM.
182      -> eddyTau is replaced with eddyPsi (eddyTau = f x rho0 x eddyPsi)
183          along with a change in CPP option (now ALLOW_EDDYPSI).
184      -> when using GM w/ GM_AdvForm:
185          The total eddy streamfunction (Psi = eddyPsi + K x Slope)
186          is applied either in the tracer Eq. or in momentum Eq.
187          depending on data.gmredi (intro. GM_InMomAsStress).
188      -> ALLOW_EDDYPSI_CONTROL for estimation purpose.
189      The key modifications are in model/src/taueddy_external_forcing.F
190      pkg/gmredi/gmredi_calc_*F pkg/gmredi/gmredi_*transport.F
191    
192    checkpoint59r
193    o new S/R (pkg/mdsio/mdsio_facef_read.F) reading of sNx+1 x sNy+1 array
194      from per-face file (take S/R READSYMTILE_RS out of ini_curvilinear_grid.F);
195      fix option to read coriolis(@ cell-corner) from files with CS-grid.
196    o pkg/mnc: add some attributes to standard 1D-coordinate variables
197    o pkg/diagnostics: enforce missing_value attribute for scalar variables at
198      mass points, when using mnc for output
199      - add runtime parameter (missing_value, missing_value_int) to override
200        default (which is the value of getcon('UNDEF'))
201    o pkg/mnc: prepare mnc for the actual use of missing values with the
202      diagnostics package: small fix in mnc_cw_readwrite.template and more
203      initialisation of never used fields
204      - replace mnc_common.h and mnc_id_header.h with corresponding upper case
205      versions
206    o pkg/thsice/thsice_ini_vars.F added default initial values so that
207      thermodynamics sea ice solver does not blow up when some initial fields
208      are missing.
209    o move from external_forcing_surf.F to ini_forcing.F
210      the p-coord. hack consisting in using pLoad to set phi0surf ;
211      update output of tutorial_global_oce_in_p (affected @ truncation level).
212    o Freshen up a bit hs94.1x64x5, notably:
213      remove rotationPeriod and tRef=5*0. (adjoint only), and add
214      exactConserv=.TRUE.
215    o pkg/generic_advdiff:
216      change option GAD_ALLOW_SOM_ADVECT to GAD_ALLOW_TS_SOM_ADV which only
217      applies to files where Temperature & Salinity 2nd Order moments are used.
218    o pkg/ptracers: add second-order moment advection schemes (80 and 81);
219      this uses a dynamically allocated internal state data structure
220      (#define PTRACERS_ALLOW_DYN_STATE in PTRACERS_OPTIONS.h)
221      and requires a fortran 90 compiler
222    
223    checkpoint59q
224    o pkg/mom_vecinv: Add energy & enstrophy conserving scheme (selectVortScheme=3)
225       (from Sadourny, described by Burridge & Haseler, ECMWF Rep.4, 1977)
226    o Refresh tutorial_global_oce_biogeo, notably:
227      - change bathymetry (put back seamounts in ACC, use hFacs)
228      - change EOS (POLY3 --> JMD95Z)
229      - use Bryan-Lewis vertical diffusivity
230      - use multidimensional advection
231      - remove old virtual virtual in dic pkg, now done through ptracer pkg
232      - change a couple of parameters in dic pkg
233    o pkg/ctrl: change formula in adctrl_bound.F and add a parameter to ctrl_map_ini_gen.F
234    o pkg/obcs: change default to OBCSfixTopo = .true.,
235      - set OBCSfixTopo=.false. in exp4/input/data.obcs to reproduce old result
236      - replace "debugMode" with "debugLevel .GE. debLevB"
237    o implementation of TAF directives for gchem,cfc,dic
238    o remove "exp5" (replaced by tutorial_deep_convection).
239    o pkg/obcs: add code to fix topography gradients normal to open boundaries;
240      this requires computing the index fields OB_Jn/Js/Ie/Iw in obcs_readparms;
241      the code can be turned on by setting OBCSfixTopo = .true. in data.obcs
242      --> changes results in exp4, seaice_obcs
243    o tutorial_deep_convection :
244      update the set-up and increase resolution and domain size ; start
245      from pseudo initial conditions = output at t=120mn in order to see
246      something happening when running testreport.
247    o pkg/seaice: add os7mp as an advection scheme
248                  add check for advection schemes
249                  add a flag for restoring T and S underneath sea ice
250    o pkg/my82: add netcdf-support and diagnostics
251    o thsice pkg:
252      - Now hsMax limits snow height by turning it into ice following
253        flooding scheme (and now conserving energy)
254      - Slight rewriting of the formula in thsice_calc_thick.F
255      - Parameter rhowi eliminated to be replaced by floodFac = (rhosw-rhoi)/rhos
256      --> changes results of global_ocean.cs32x15.icedyn and global_ocean.cs32x15.thsice
257    
258    checkpoint59p
259    o gchem / dic / cfc :
260      - add useDIC, useCFC , read from "data.gchem" (& hold in GCHEM.h);
261      - add new parameter files: "data.dic" & "data.cfc" ;
262      - various re-arrangement in initialisation & header file ;
263      - fix tutorial_global_oce_biogeo for multi-threaded test.
264    o pkg/dic: test for "pickup_dic" file when restarting ;
265      if no pickup-file, can restart with a re-initialised pH (same as it did
266      before) providing pickupStrictlyMatch is set to False.
267    o change argument list of S/R PTRACERS_WRITE_PICKUP & MYPACKAGE_WRITE_PICKUP
268      + fix call to S/R GGL90_WRITE_PICKUP & DIC_WRITE_PICKUP
269    o add a "warning" (to Error msg file) when an Active Tracer is not using AB-2
270      and staggerTimeStep is off (needed for stability of Internal-wave dynamics).
271    o move out of PARAMS.h & data the last pieces of old-ptracer code: tauTr1ClimRelax,
272     & lambdaTr1ClimRelax ; put those 2 params in PTRACERS_PARAMS.h & data.ptracers
273       (note: not clear to me what lambdaTr1ClimRelax is still used for ...)
274    o pkg/mom_vecinv: - new parameter "selectVortScheme" to select which
275       scheme to use for vorticty-term ;
276     - compute upwindVorticity=T case within mom_vi_u/v_coriolis_c4.F
277       (with default selectVortScheme, return to original discretisation)
278     - remove weird combination (e.g.: upwindVorticity & highOrderVorticity)
279    o pkg/seaice: add a line to the summary to indicate grid type (B/C)
280    o in mom_calc_visc, fix average value of viscAh_W & viscA4_W next to the
281      bottom ; only used with variable horizontal viscosity and non-hydrostatic.
282      also fix diagnostics VISCAHW & VISCA4W.
283    
284    checkpoint59o
285    o dome/code/obcs_calc.F: avoid division by zero (detected using gfortran).
286    o change the loop ordering in most gad_*_adv_x.F to improve vectorization:
287      move a few statemens out the main loop into separate loops
288    o pkg/shelfice:
289      - sort out freshwater flux; convert freshwater fluxes to mass fluxes
290        (kg/m^2/s), does not break tests, because in verification/isomip,
291        rhoConstFresh=rhoConst (by accident)
292      - rearrange computation of tLoc, sLoc, pLoc to make code more efficient
293      - move S/R find_rho_scalar, pkg/ecco/sw_ptmp.F, pkg/ecco/sw_adtg.F into
294        new file model/src/seawater.F, so that they are available for all pkgs.
295      - convert potential temperature into in-situ temperature. This changes the
296        isomip tests => update tests
297    o add a flag writePickupAtEnd (default=true) to be able to suppress
298      writing a pickup at the last timestep
299    o tools/mpack-1.6 :
300      - disable automake (not working) and autoconf (not needed).
301      - update to version 1.6.4 which fix MD5 code on some 64 bits platforms
302        also cleaner with much less compilation warnings.
303    o pkg/profiles:
304      rename profiles_interp_mean_genericgrid as profiles_interp_mean_gg
305      (for "less than 32 characters name" compiler requirement)
306    o pkg/obcs and pkg/exf: added capability to specify seaice open boundary
307      conditions that have a different sampling frequency than S/T/U/V obcs
308    o pkg/diagnostics (stats-diags):
309      - fix global Min/Max in case 1 processor get only empty tiles
310    o genmake2: replace (4 times)
311         make genmake_tc_1.o >> genmake_warnings 2>&1
312      with
313         COMM="$CC $CFLAGS -c genmake_tc_1.c"
314         echo $COMM >> genmake_warnings
315         $COMM >> genmake_warnings 2>&1
316      to make genmake2 always see the value of CC as specified in the optfile.
317    o generic_advdiff: - prather advection scheme (SOM) coded for CS-grid.
318      - add diagnostics for 1srt & 2nd Order moments and sub-grid variance.
319      - modify verification advect_cs test to test SOM-advection on CS-grid.
320    o pkg/ctrl:
321      - Rewrite of ctrl_map_ini_ecco.F,
322        introducing a generic routine (ctrl_map_ini_gen.F).
323      - Modification of ctrl_bound/adctrl_bound handling control vector bounds.
324    
325    checkpoint59n
326    o pkg/diagnostics: for large number of diagnostics, store diagnostic mate
327      number in dedicate array "hdiag":
328      - new version of S/R DIAGNOSTICS_ADD2LIST : DIAGNOSTICS_ADDTOLIST
329        with 1 more argument (mate number); modify old version DIAGNOSTICS_ADD2LIST.
330      - many small changes (integer format) for large number of diagnostics
331      - start to use DIAGNOSTICS_ADDTOLIST (necessary for diagnostics with
332        a counter mate) in pkg diagnostics, ptracers, thsice & aim_v23.
333    o add parameter rotateGrid and Euler angles EulerPhi/Theta/Psi. For
334      usingSphericalGrid, this allows to define the rotated grid coordinates
335      via phiMin/thetaMin/dxSpacing/dySpacing, etc., but then re-compute the
336      geographical coordinates according to the inverse of the rotation defined
337      by the Euler angles, so that Coriolis parameter and online-interpolation by
338      exf works with the geographical coordinates on XC/YC/XG/YG.
339      Naturally, this feature does not work with all packages, so some
340      combinations are prohibited in config_summary (flt, flt_zonal, ecco,
341      profiles), because there the coordinates are assumed to be regular
342      spherical grid coordinates.
343    o pkg/gmredi,ctrl,ecco,autodiff,grdchk and model/src,inc:
344      - introduce isopycnal diffusion coefficient control.
345    o tools/adjoint_options:
346      - additional control vector components.
347    o pkg/mnc: have mnc create marginally meaning full coordinate variables
348      (that is the grid indices) if usingCurvilinearGrid and NOT EXCH2
349    o pkg/mypackage:
350      - add example of read/write pickup for state-var ;
351      - add entry points to the main code for state-vars diags & write-pickup.
352    o pkg/exf: rewrite of exf_getffieldrec.F to properly deal with year
353      transitions for useExfYearlyFields
354      - add new subroutine that determines the file to read from for
355        use*YearlyFields = .TRUE. and .FALSE.
356      - add a verification experiment to global_with_exf that tests
357        useExfYearlyFields with USE_EXF_INTERPOLATION defined
358    o pkg/obcs/exf: add useOBCSYearlyFields (=.FALSE.) to obcs with exf in
359      analogy to useExfYearlyFields; rearrange obcs_prescribe_read: two new
360      subroutines (which could be generated from a template, because they are
361      almost identical), for now they are included in obcs_prescribe_read.F for
362      simplicity
363    o pkg/exf:
364      - add a little more diagnostic to exf_interp_read (in analogy to
365        mds_read_field, can be turned off with debugLevel < debugLevA=1)
366      - improve vectorizability of exf_interp for TARGET_NEC_SX, makes code
367        ugly but fast by unrolling short inner loops, inserting a unroll=8
368        directive in routine lagran, and splitting a loop and making do while the
369        outermost loop (the latter requires the intoduction of index arrays)
370    o pkg/obcs: replace obcs_apply_area/heff/hsalt/hsnow with obcs_apply_seaice
371    o pkg/seaice: moved DIFFERENT_MULTIPLE from seaice_model to seaice_dynsolver
372      http://forge.csail.mit.edu/pipermail/mitgcm-devel/2008-January/003173.html
373    o verification/seaice_obcs: updated for restart test and latest options
374    o pkg/seaice: add a new flag SEAICEuseTEM to use a slightly different
375      ice rheology (so-called truncated ellipse, that gets rid of tensile stress);
376      for now this is only available for the C-grid code and also within
377      #ifdef SEAICE_ALLOW_TEM, because this option may slow down the EVP code
378    
379    checkpoint59m
380    o pkg/seaice: use different time constant for melting (SEAICE_gamma_t)
381      and freezing (SEAICE_gamma_t_frz) ice due to mixed layer temperature
382    o gad_som : fix flux output (& diagnostics) to have same units as other  
383      advection scheme fluxes (was previously multiplied by deltaT).  
384    o added verification/seaice_obcs both to test seaice open boundaries
385      and to provide an example matlab scrpt for generating them
386    o added verification/lab_sea/input.salt_plume for testing pkg/salt_plume
387    o pkg/salt_plume: clean up salt_plume_frac.F to
388      remove redundancy in PlumeMethod 1 and 4
389    o pkg/kpp: added saltplume diagnostics
390    o pkg/obcs and pkg/seaice:
391      - do not set uice and vice to zero when OB*icefile are unspecified
392      - OBCS_SEAICE_AVOID_CONVERGENCE is undefined by default
393      - moved seaice tracer obcs after call to seaice_growth
394    o pkg/salt_plume: added various options for salt plume depth
395      criterion and for vertical distribution of the salt
396    
397    checkpoint59l
398    o pkg/ptracers: new version of ptracers pickup:
399      read meta file and write only fields which are needed to restart.
400      ( same logic as main pickup file ; also using pickupStrictlyMatch )
401    o pkg/seaice:
402      - add timescale for melting due to warm mixed layer as a means of
403        setting SEAICE_availHeatFrac more conveniently
404      - add a CPP-flag/runtime parameter check for flooding algorithm
405      - reformulated availHeat in seaice_growth.F to be independent of AREA
406    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
407      unit changes
408    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
409    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
410      SX vector computer.
411    o pkg/seaice:
412      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
413        seaice forcing fields can now be read only through pkg/exf
414      - removed some unused halos
415    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
416    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
417      or U/VICE from U/VWIND before computing U/VSTRESS
418    
419    checkpoint59k
420    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
421      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
422    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
423      all experiments pass when compile with un-initialised var. checking option.
424    o added pkg/salt_plume
425    o script to test restart (for now, in MITgcm_contrib/jmc_script)
426    o pkg/seaice: new read/write pickup version.
427      read meta file and write only fields which are needed to restart.
428      ( same logic as main pickup file ; also using pickupStrictlyMatch )
429    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
430    o lab_sea.hb87: modify the domain & update output.hb87.txt :
431      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
432      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
433      process. Fixed here by closing the domain at the Northern boundary.
434    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
435    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
436      a set of consecutive levels in/from a 3-D array.
437    o pkg/ptracers:
438      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
439      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
440    
441    checkpoint59j
442    o in pkgs: dic, obcs, offline, rbcs:
443      standard way to compute coeff. for time interpolation between 2 time reccords
444      which retains full precision (& make results less dependent on compiler).
445      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
446    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
447      packages instead of reading ice cover and wind speed separately
448    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
449     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
450      to allow to compile customized code before the update)
451    o cleaning-up:
452      - fix CPP instruction syntax in pkg/obcs
453      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
454        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
455      - fix some threads issue in IO parts.
456    o pkg/dic:
457      - add tons of "_d 0" (--> much better testreports !)
458       and then update outputs of tutorial_global_oce_biogeo
459    o pkg/mom_fluxform:
460      add a special version of momentum advection intended to conserve momentum
461      next to a bathymetry step or a coastline edge. (default = off = #undef)
462    o new read/write pickup version:
463      - for now, only implemented for main (mdsio) pickup file.
464      - write out only what is needed to restart; merge pickup_nh , pickup_ph
465        and main pickup together.
466      - read meta file; read only what is needed to restart; stop if a field
467        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
468        if it make sense (even if the restart is not perfect).
469      - if no meta file, assume that pickup to read corresponds exactly to
470        a pickup that would currently be written.
471      - read pickup written in the old format (until checkpoint59i) if it
472        recognizes an old meta file (no field-list).
473      - add a meta file in exp. which starts from a pickup: 2 cases:
474        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
475         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
476        b) a meta file describing the content of the associated pickup file
477         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
478    o pkg/mdsio & pkg/rw:
479      - new routine to read a meta file ; new set of routine to read
480        Multiple-fields file (with meta file).
481    o added open boundary conditions capability for seaice
482        HSNOW, HSALT, UICE, and VICE
483    
484    checkpoint59i
485    o adjoint:
486      * fix multiDimAdvection adjoint
487        (partial recomputation problem by TAF for fVerT(:,:,kDown)
488        and comlev1 size definition (maxpass vs. max. number of tracers)
489      * verification/global_ocean.90x45x15 adjoint now tests
490        NLFS and multiDimAdvection using DST3 (=30)
491      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
492    o pkg/kpp: add "_d 0" to real constant (if missing);
493      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
494      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
495    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
496      for internal parameters related to restart process (formerly from PARAMS.h)
497      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
498    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
499      as argument. (only atm2d & obcs write_pickup have not yet been updated)
500    o pkg/monitor:
501      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
502      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
503      - account for deep Atmosphere factor and density factor (anelastic)
504    o added open boundary conditions capability for seaice HEFF and AREA
505    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
506      thermodynamics
507      - requires a little reorganization, which affects the testreport results
508        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
509        so that now the conservative form is tested
510      - add a few comments
511    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
512    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
513    o add new diagnostics to seaice: advective, diffusive fluxes (only for
514      multidim-advection, for scheme 2 they are not filled) and transports,
515      thermodynamic growth rates
516    o change units of EmPmR (inside the code, + within coupling interface)
517      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
518      Affects results @ truncation level (cg2d match) and update output of
519       experiments: lab_sea(6), global_ocean.90x40x15(10),
520      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
521      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
522      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
523      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
524    
525    checkpoint59h
526    o pkg/exf:
527      - improve vectorization by moving if-statement out of loops in
528        exf_mapfields, exf_radiation
529      - exf_bulkformulae.F: introduce 2D fields and vectorize code
530    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
531    o testreport:
532      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
533        monitor & update offline_exf_seaice exp. output.
534      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
535    o pkg/seaice:
536      - bug fix in the evp solver: boundary conditions were affected be
537        masking of zMax/zMin (changes results)
538      - minor bug fix in boundary conditions in seaice_calc_strainrates
539        (changes results for no_slip)
540      - seaice_lsr.F: make interpolation of eta dependent on boundaries
541      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
542      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
543        stress formulation and no-slip boundary conditions
544    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
545      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
546    o pkg/seaice: a first HSALT time stepping equation has been checked in
547    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
548      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
549      without requiring DO-IF statements
550    o pkg/thsice:
551      use continuous power-law function for partition of energy between lateral
552      melting/freezing and thinning/thickening ; old code using step function
553      still available with #undef THSICE_FRACEN_POWERLAW
554      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
555    o testreport: change AD testing : check against results/output_adm.txt
556      using same scripts as for forward test.
557    
558    checkpoint59g
559    o adjoint testing: in preparation for changing testreport:
560      - output format: cost and grad written on separated lines
561      - ad output results in directory "results" (instead of "results_ad")
562    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
563    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
564    o pkg/ecco: allow user defined cost function contributions
565    o testreport:
566      Allow to choose (per experiment) the list of tested output variables
567       and the main variable (used to issue a pass/FAIL ) ;
568      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
569      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
570      Also modify printing of summary:
571       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
572       b) echo the list of tested variables in the individual summary.txt of
573          each experiment.
574    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
575      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
576      (but still depend on the tile decompostion of the domain).
577    o pkg/seaice: change a discretization detail to make the B-grid code
578      "more symmetric". This change is likely to remove all "ridges/leads" that
579      where quasi-aligned with the grid in B-grid solutions. It may also be
580      the solution to the stress coupling issues with the B-grid.
581    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
582      remove .cvsignore from input dir. (since testreport no longer run here).
583    o pkg/thsice:
584     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
585     - fix reshaping of sea-ice just after advection:
586       melt all the ice only if ice-volume is too small.
587     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
588       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
589     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
590    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
591      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
592    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
593      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
594      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
595      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
596      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
597      -> update output.txt
598    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
599     this affects truncation error: -> update output.txt of exp:
600      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
601      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
602    
603    checkpoint59f
604    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
605    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
606      a bounded range (in forward mode)
607    o pkg/ecco, ctrl, autodiff and mom_common:
608     internal parameter controls, completements of implementations
609    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
610    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
611      (not seem any difference in testing results).
612    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
613       at face corners.
614    o pkg/generic_advdiff:
615     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
616      loop range indices for computing vertical advection tendency
617      and do the calculation in the interior only (no overlap) ;
618      for now, only implemented for SOM advection (to save CPU time).
619     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
620    o exch2 adjoint
621      First set of changes:
622      - add exch2 hand-written adjoint templates
623      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
624        This will require cleanup in pkg/autodiff/*.F
625        (changed routines currently kept separate in verif. code/)
626      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
627        that used to hide exch2 or cubed-sphere specific code
628        (commented via 'cph-exch2')
629    o pkg/seaice
630      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
631    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
632       output of global_ocean.cs32x15.thsice .
633    
634    checkpoint59e
635    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
636      for B-grid vector (not yet tested) and C-grid vector (<- only used
637      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
638    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
639      (#ifdef ALLOW_SALT_PLUME)
640    o gather_2d/scatter_2d: removed halo regions
641    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
642      scheme and the corresponding test case (under front_relax dir). For now,
643      only available with Skew-flux form and not yet tested in realistic set-up.
644      adjoint: store directives updated, but gradient checks deteriorated,
645      so maybe GM/Redi adjoint is now broken.
646    o seaice adjoint
647      * add AREA, HEFF, HSNOW as control variable
648        (should not change lab_sea results)
649      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
650    o pkg/seaice:
651      * added computation of saltFlux in seaice_growth;
652        For time being, sea ice salinity is assumed constant
653        contribution of snow flooding to freshening of sea ice is neglected.
654        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
655        defaults to 0.0 in order to maintain backward compatibility.
656        Typical values for SEAICE_salinity are 4 to 10 g/kg.
657      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
658      * added SEAICE_availHeatFrac, which specifies fraction of surface level
659        heat content used to melt or grow ice
660      * commented out cap of HICE: it helps keep ice thinner
661      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
662      * applied OBCS T/S mask to HEFFM sea ice mask
663    
664    checkpoint59d
665    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
666     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
667     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
668    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
669     and change default value of parameter "GM_Small_Number";
670     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
671       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
672       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
673    o pkg/ecco: cost function when applying pkg/smooth to controls
674    o pkg/ctrl: add forcingPrecond run time parameter
675    o pkg/seaice:
676     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
677     - fix bug in metric terms of u-equation in LSR solver (implicit part),
678       changes verification/lab_sea
679     - rearrange implicit part of u-equation in LSR solver to make it easier to
680       read, understand, and debug. This causes changes at the truncation level.
681     - fix (serious) bug in the boundary conditions (sign error in the implicit
682       part) of the LSR solver. Changes all LSR results.
683     - fixed problem with HSNOW initialization to avoid thick snow when AREA
684       is initilized with small values - does not change lab_sea results.
685     - added HsnowFile initialization capability
686    o pkg/smooth: addition to model/src and pkg/ctrl so allow
687     initialization of pkg/smooth and application to control vector
688    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
689    o dependencies: pkg/profiles requires pkg/cal
690    o pkg/profiles:
691     - added option ALLOW_PROFILES_GENERICGRID
692         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
693         that interpolation information (grid points and coefficients) is provided
694         within the netcdf input files.
695         -> sample matlab scripts can be found in MITgcm_contrib/gael
696         that allow you to prepare netcdf input files.
697     - also modified: cleaner include statements, cleaner error print statements,
698       cleaner stops when error, and more tests of the netcdf input files consistency.
699    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
700    o pkg/seaice:
701     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
702       requires a new routine: seaice_diagnostics_fill.F
703     - make sure that seaice does not move if not forced (pressure replacement
704       method, Hibler and Ip, 1995), changes results
705     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
706     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
707       It is turned off by default (=-1.), because it changes the results.
708     - make it possible to read AREA from a file, too.
709    
710    checkpoint59c
711    o add S/R and diagnostics for oceanic mixed-layer depth
712    o move GMRedi call after all vertical mixing schemes (including KPP)
713    o pkg/thsice:
714     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
715      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
716    o pkg/obcs:
717     - bug fix for balance code
718    o pkg/seaice:
719      - allow values of SEAICE_elasticParm > 1
720      - add new parameter SEAICE_evpTauRelax as an alternative
721        to SEAICE_elasticParm
722      - make lsr boundary conditions free slip (by default), changes result
723      - add code for no slip boundary conditions for lsr
724      - set minimum of zeta to zero (and not 4e8) (changes results)
725      - add a cap on AREA after advecting AREA if seaice_growth is not called
726    o change calculation of Visbeck K:
727      - no longer depend on tapering scheme; instead, compute slope (limited
728        by GM_maxSlope). this is equivalent to what was comuted before with
729        clipping or linear tappering.
730      - fix vertical averaging (wrong by 1/2 level)
731      - leave the old version (but will not be maintained) within
732        #ifdef OLD_VISBECK_CALC / #endif
733      - update output of exp. ideal_2D_oce
734    o change error catch in calc_r_star to improve vectorization
735    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
736      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
737    o adjoint:
738      Re-organized adjoint checkpointing according to Matt Mazloff
739      (but with modifs/completions/cleanups)
740      Storing is now bundled into large arrays to optimized I/O
741      (and second step in cleanup of the_main_loop)
742    
743    checkpoint59b
744    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
745      - export/import (between ocean & coupler) fields needed for ocean DIC.
746    o pkg/seaice:
747      - get rid of three more exchanges seaice_calc_viscosities (required
748        different loop boundaries in seaice_lsr and seaice_ocean_stress)
749      - bug fix in seaice_ocean_stress (update of lab_sea required)
750      - reduce loop boundaries to necessary minimum also in seaice_evp
751      - go back to the old way of computing deltaC/Z as the adjoint likes that
752        better
753    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
754      passive tracer to an Age Tracer) + update output.txt
755    o pkg/exf:
756      - implement A-grid / C-grid selection for wind-stress input files.
757      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
758      for now, in exf_bulk_largeyeager04.F only :
759      - change implementation for case where windspeed + 2. components wind-stress
760        are read-in. AND use rhoConstFresh to convert evap.
761    o pkg/seaice:
762      - use correct EXCH_UV for wind-forcing (on A-grid).
763      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
764        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
765    o pkg/exf:
766      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
767      EXF_INTERPOLATION:
768      - merge global_with_exf/code version of exf_interp_read.F
769        to the main code ;
770      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
771        reading the file ; Important: This options needs to be defined to recover
772        previous code.
773        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
774      - no longer loose real*8 precision along the way when using exf_iprec=64.
775    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
776      - change discretisation of evp-solver in order to avoid another exchange
777        (changes lab_sea) and clean up a little
778      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
779        help the adjoint (this also changes the results slightly)
780      - add a few "_d 0" where they had been missing in seaice_evp.F
781      - cleaning up: remove unused seaice_calc_rhs.F
782    o pkg/exf: some cleaning-up:
783      - change various "constants" into runtime parameters
784      - cleaned-up Large&Yeager04 routine which should eventually
785        replace exf_bulkformulae.F (changed names of S/R and CPP)
786        and merged various ALLOW_ATM_WIND options
787     only used with thsice pkg (in thsice_get_exf.F):
788      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
789        which are used when useStabilityFct_overIce=TRUE (= the default)
790      - change default values of ice & snow emissivity and scale downward LW
791        by ice & snow emissivity.
792    o pkg/thsice:
793     fix few little problems, in thsice_calc_thickn.F:
794      - growth vertically (and not laterally) if iceFrac == iceMaskMax
795      - melt only laterally if hIce < hThinIce (as the comments say)
796      and in thsice_extend.F:
797      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
798      - start to form ice as soon as the minimum ice-volume is reachable.
799     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
800      and cpl_aim+ocn
801    o pkg/kpp
802     - move computation of surface related input fields to KPP into a new
803       subroutine kpp_forcing_surf.F
804     - remove wrong (within bi,bj loops) EXCH calls.
805     - little cleaning (add argument myThid in last position, cvs header ...)
806     - for now, fix conservation problem by exchanging KPPviscAz (may not
807       be the best fix)
808    o pkg/seaice
809     - check for inconsistent evp parameter/cpp-flag combination
810     - remove leftover errIO flat for obsolete name list error handling
811    o OpenAD
812     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
813    
814    checkpoint59a
815    o pkg/seaice: some parameter clarifications and a little bit of clean up
816    o pkg/thsice: rename run-time parameters:
817       himin       -> hIceMin
818       himin0      -> hThinIce
819       hihig       -> hThickIce
820       i0          -> i0swFrac
821       transCoef   -> bMeltCoef
822       frac_energy -> fracMelting
823      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
824       with default values (for now) that do not change the results.
825      remove old version of thsice vars advection in pkg/seaice.
826    o in FFIELDS.h:
827      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
828      - make pLoad & sIceLoad always available (but still only used if
829         ATMOSPHERIC_LOADING is #define).
830    o pkg/kpp: replaced _KPP_RL with _RL
831    o bug fixes for vertical diffusivity computations when both KPP and
832        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
833        are no longer updating the vertical diffusivity array
834        (passed as argument) but are (re-) setting those arrays.
835    o pkg/seaice: fix bug in evp solver, while doing that
836      - change (improve?) discretization of stress computations for both
837        cgrid-lsr and evp solver
838      - add a new routine to compute strain rates
839      - the above changes lab_sea results
840      - add no slip conditions for evp solver (off by default), lsr-version
841        may follow
842      - fix exchange for shear at Z-points (does not change lab_sea)
843      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
844        (to force the user to pick a time step since there is not "safe" way
845        of choosing it)
846      - add principal stress diagnostics
847      - rearrange fields for evp a little to avoid having to call a: too many
848        exchanges and b: exchanges for stress trensor components which we do
849        not have.
850      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
851        of evp, complete rewrite for lsr case (latter is does not yet work
852        in all cases)
853    o pkg/kpp: add code to have mixing in shelf ice caverns
854      - add myThid to all kpp routines (long overdue)
855    
856    checkpoint59
857    o pkg/exf:
858      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
859        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
860      - move exf header files from lower_case.h to UPPER_CASE.h ;
861        add missing cvs Header & Name
862      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
863      - add namelist param. selectStressGridPosition, exf_monFreq
864      - retire many _CLIM routines, and remove data.exf_clim
865        + params moved to data.exf
866        + climsst, climsss now handled by exf_set_gen, i.e.
867          climss?period=0 refers to constant field,
868          climss?period=-12 to monthly forcing
869      - split up namelists in data.exf
870    o pkg/seaice:
871      - remove seaice_exch and seaice_exch_uv
872      - remove superfluous exchange of theta
873      - add myThid to seaice_budget_ocean/ice
874      - add new interface for atmospheric wind forcing (C-grid only)
875        + new routine
876        + two new field (taux, tauy for stress over ice)
877        + removed one global field (DAIRN) for C-grid case only
878    o pkg/thsise
879      - 2nd set of modifs for thsice adjoint in conjunction with exf
880    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
881    
882    checkpoint58y_post
883    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
884      vertical diffusivity, similar to that in MOM4; turned on using
885      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
886      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
887    o Added capability for 3D specification of background vertical diffusion
888      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
889      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
890      "data" file that contains the 3D vertical diffusivity coefficients.
891    o ice dynamics (pkg/seaice) with thsice thermodynamics:
892      - add code within pkg thsice to advect & diffuse sea-ice fields
893      similar to (and will replace) what has been added in  seaice_advdiff.F,
894      but: - conserving Mass, Heat & Salt.
895           - better when using non-linear advection scheme (not yet fully tested)
896           - can also be used in atmospheric set-up (for now, only the diffusion).
897    
898    checkpoint58x_post
899    o IO option for global-file compact format:
900      - add options when generating topology (utils/exch2/matlab-topology-generator)
901      - add I/O capability (pkg/mdsio).
902      - adapt utils/matlab/rdmds.m to read this format.
903      for now long-line format not yet supported by pkg/mdsio (& exch2).
904    o shelfice: add a few diagnostics
905    
906    checkpoint58w_post
907    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
908      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
909      (and replace horiVertRatio in NH code).
910      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
911                         and tutorial_plume_on_slope (sensitive to truncation)
912    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
913      directly to drive seaice model (C-grid only)
914    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
915     - reintroduce computation of wind from stress,
916     - compute tau (in exf_bulkformulae.F) from windstress averaged to
917       mass points to avoid tau = 0
918     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
919    o rdmnc.m: make it work with "global" files created with gluemnc
920    o rdmnc.m : some improvements in dealing with singleton dimension
921      (tested on all testreport mnc output files).
922    o genmake2: disable pkg/profiles if netcdf test fails.
923    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
924    o move call to cal_readparms up to make calendar parameters/variable available
925      to all packages
926    
927    checkpoint58v_post
928    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
929      useDynP_inEos_Zc tested.
930    o pkg/exf: changes to properly interpolate/mask/scale initial fields
931    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
932      and portions thereof.  See read_cs.txt for description and examples.
933    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
934      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
935      following the great-circle arc between those 2 points.
936    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
937      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
938    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
939     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
940     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
941     - still needs work (not working with some options ; efficiency to improve)
942       and serious testing.
943     - use this scheme for temperature & salinity in 2 advection test exp.:
944       advect_xy & advect_xz, respectively.
945    
946    checkpoint58u_post
947    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
948    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
949    o testreport: add option "-skipdir" to skip some test.
950    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
951      momentum calculation.
952    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
953    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
954      remove checkpoint.F and the_correction_step.F (no longer used);
955      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
956    o add option (linFSConserveTr) to correct for tracer source/sink due to
957      Linear Free surface
958    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
959    o pkg/thsice: fix reading mnc-pickups
960    
961    checkpoint58t_post
962    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
963    o pkg/mdsio:
964     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
965       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
966       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
967     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
968     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
969       either MDS_READ_FIELD or MDS_WRITE_FIELD )
970     - new S/R (to replace MDSWRITEMETA), which allows to write more
971       informations (variable names, time ...) to meta files.
972     - modify rdmds.m to give back the meta file content.
973    o pkg/diagnostics: change vertical interpolation to be safer, and more
974       flexible (define p-levels to interpolate to in data.diagnostics);
975      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
976       diagnostic pointer.
977    o pkg/seaice: more cleaning up of seaice_growth, added many comments
978    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
979    o fix multi-category seaice:
980     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
981       SEAICE_MULTICATEGORY
982     - fix short wave heat flux
983    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
984       and allow to use EVP solver. Change forward lab_sea: test both EVP
985       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
986    o Initial check-in of lab_sea adjoint
987      (very similar to natl_box_adjoint/code_seaice)
988      * used C-grid and EVP solver
989      * used KPP, GM/Redi
990      * uses inAdExact=.TRUE.
991      * gradient checks fail for both ADM and TLM
992        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
993        f.d. gradients actually seem more problematic than ADM, TLM gradients;
994        issue is related to forward mismatch between g77 an ifort
995    o pkg/seaice: overhaul of thermodynamics
996     - growth.F and groatb.F are replaced by new routine seaice_growth.F
997     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
998     - move a few global fields out of SEAICE.h into seaice_growth.F and
999       make them 2D (FICE/QNETO/ ...)
1000     - remove FO (it is the same as QNETO)
1001     - introduce a few local fields to avoid modifying external fields such
1002       as atemp, etc.
1003    
1004    checkpoint58s_post
1005    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
1006      changed exf_set_gen.F so that
1007        genperiod=0 means input file is one time-constant field and
1008        genperiod=-12 means input file contains 12 monthly means
1009    o CG2D: use pre-computed solver main-diagonal (stored in common block);
1010      this affects truncation error ; generate new output file for exp. which
1011      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
1012        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
1013        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
1014        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
1015        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
1016        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
1017    o start implementation of deep-atmosphere and anelastic formulation
1018    o verification: remove 2nd copy of input files and use script "prepare_run"
1019      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
1020    o mom_common/vecinv/fluxform: fix a few initialisation isssues
1021    o profiles: fix for multithreaded case
1022    
1023    o diagnostics: rename few diags:
1024      s/'PRESSURE'/'RCENTER '/g
1025      s/'TICE    '/'oceFreez'/g
1026      s/'TAUX    '/'oceTAUX '/g
1027      s/'TAUY    '/'oceTAUY '/g
1028      s/'SWFLUX  '/'oceQsw  '/g
1029      s/DIFx/DFxE/g
1030      s/DIFy/DFyE/g
1031      and add few ocean-forcing diagnostics:
1032      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
1033    o modifications to pkg/seaice/growth.F and budget.F, which change results of
1034      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
1035      as actual snow thickness.  It now refers everywhere to effective snow
1036      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
1037    
1038    checkpoint58r_post
1039    o modifications to pkg/seaice/growth.F, which change results of
1040      lab_sea experiment: fixes pertain to melting snow over open water, to
1041      masking EVAP under sea ice, and to using the correct AREA variable for
1042      computations of EVAP, PRECIP, HSNOW, and GHEFF
1043    o add ability to read bathy, salt, and theta using MNC (off by def)
1044    o add flooding algorithm and advection of HSNOW for pkg/seaice;
1045      both are turned off by default and do no change any results
1046    o seaice advection with pkg/thsice: a step toward the use of non-linear
1047      advection scheme, but #ifdef or commented out for now (requires more EXCH).
1048  o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens  o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
1049    (identical results) and the standard version of EXTERNAL_FIELDS_LOAD    (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
1050    in natl_box (affects results @ truncation level: update output.txt)    in natl_box (affects results @ truncation level: update output.txt)

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