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revision 1.763 by mlosch, Tue Jan 9 13:36:19 2007 UTC revision 1.1010 by jmc, Tue Jul 29 18:42:35 2008 UTC
# Line 4  $Name$ Line 4  $Name$
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    checkpoint61a
8    o exch2/matlab-topology-generator:
9      fix bug in index bounds for N-S internal exchange (hard to tell if this
10      had any effect on the solution).
11    o pkg/mnc: small fix in mnc_handle_err: make sure that length of msgbuf
12      is exceeded
13    o testreport: modify syntax of awk, so that it works also with
14      awk, and not only with nawk and gawk
15    
16    checkpoint61
17    o autodiff
18      Change default for TAF usage by removing argument '-nonew_arg'
19      This changes TAF subroutine argument list (ordering of active var.)
20      Omission of this flag leads to incompatibility w.r.t. TAMC
21      To restore TAMC-compatibility, need following modifs:
22      * use adoptfile tools/adjoint_options/adjoint_tamc_compatibility
23      * use CPP option #define AUTODIFF_TAMC_COMPATIBILITY
24      Tested TAF version is 1.9.22
25      N.B.: exch2 hand-written adjoint code currently not TAMC compatible
26    
27    checkpoint60
28    --->>> This is the last checkpoint for which generating the adjoint
29    --->>> is done via the TAMC-compatibility TAF-flag "-nonewarg"
30    --->>> by default.
31    --->>> Future checkpoints will ommit this flag by default.
32    o pkg/generic_advdiff, os7mp: simplify and avoid division by zero.
33    o pkg/grdchk: Add gradient check to etan0 perturbations.
34    o pkg/exf: read ice area from file (#ifdef ALLOW_ICE_AREAMASK).
35    o pkg/autodiff: more flexibility in zeroadj.
36      model/src: modifying do_oceanic_phys.F accordingly.
37    o pkg/ctrl: Bounds for (kapgm,kapredi,eddypsi) parameter estimation.
38    o model/src and pkg/gmredi: GMREDI_WITH_STABLE_ADJOINT CPP option
39      special setup of gmredi for which the adjoint is stable
40      enough for parameter optimization.
41    o bridging the gap between eddy stress and GM.
42      -> eddyTau is replaced with eddyPsi (eddyTau = f x rho0 x eddyPsi)
43          along with a change in CPP option (now ALLOW_EDDYPSI).
44      -> when using GM w/ GM_AdvForm:
45          The total eddy streamfunction (Psi = eddyPsi + K x Slope)
46          is applied either in the tracer Eq. or in momentum Eq.
47          depending on data.gmredi (intro. GM_InMomAsStress).
48      -> ALLOW_EDDYPSI_CONTROL for estimation purpose.
49      The key modifications are in model/src/taueddy_external_forcing.F
50      pkg/gmredi/gmredi_calc_*F pkg/gmredi/gmredi_*transport.F
51    
52    checkpoint59r
53    o new S/R (pkg/mdsio/mdsio_facef_read.F) reading of sNx+1 x sNy+1 array
54      from per-face file (take S/R READSYMTILE_RS out of ini_curvilinear_grid.F);
55      fix option to read coriolis(@ cell-corner) from files with CS-grid.
56    o pkg/mnc: add some attributes to standard 1D-coordinate variables
57    o pkg/diagnostics: enforce missing_value attribute for scalar variables at
58      mass points, when using mnc for output
59      - add runtime parameter (missing_value, missing_value_int) to override
60        default (which is the value of getcon('UNDEF'))
61    o pkg/mnc: prepare mnc for the actual use of missing values with the
62      diagnostics package: small fix in mnc_cw_readwrite.template and more
63      initialisation of never used fields
64      - replace mnc_common.h and mnc_id_header.h with corresponding upper case
65      versions
66    o pkg/thsice/thsice_ini_vars.F added default initial values so that
67      thermodynamics sea ice solver does not blow up when some initial fields
68      are missing.
69    o move from external_forcing_surf.F to ini_forcing.F
70      the p-coord. hack consisting in using pLoad to set phi0surf ;
71      update output of tutorial_global_oce_in_p (affected @ truncation level).
72    o Freshen up a bit hs94.1x64x5, notably:
73      remove rotationPeriod and tRef=5*0. (adjoint only), and add
74      exactConserv=.TRUE.
75    o pkg/generic_advdiff:
76      change option GAD_ALLOW_SOM_ADVECT to GAD_ALLOW_TS_SOM_ADV which only
77      applies to files where Temperature & Salinity 2nd Order moments are used.
78    o pkg/ptracers: add second-order moment advection schemes (80 and 81);
79      this uses a dynamically allocated internal state data structure
80      (#define PTRACERS_ALLOW_DYN_STATE in PTRACERS_OPTIONS.h)
81      and requires a fortran 90 compiler
82    
83    checkpoint59q
84    o pkg/mom_vecinv: Add energy & enstrophy conserving scheme (selectVortScheme=3)
85       (from Sadourny, described by Burridge & Haseler, ECMWF Rep.4, 1977)
86    o Refresh tutorial_global_oce_biogeo, notably:
87      - change bathymetry (put back seamounts in ACC, use hFacs)
88      - change EOS (POLY3 --> JMD95Z)
89      - use Bryan-Lewis vertical diffusivity
90      - use multidimensional advection
91      - remove old virtual virtual in dic pkg, now done through ptracer pkg
92      - change a couple of parameters in dic pkg
93    o pkg/ctrl: change formula in adctrl_bound.F and add a parameter to ctrl_map_ini_gen.F
94    o pkg/obcs: change default to OBCSfixTopo = .true.,
95      - set OBCSfixTopo=.false. in exp4/input/data.obcs to reproduce old result
96      - replace "debugMode" with "debugLevel .GE. debLevB"
97    o implementation of TAF directives for gchem,cfc,dic
98    o remove "exp5" (replaced by tutorial_deep_convection).
99    o pkg/obcs: add code to fix topography gradients normal to open boundaries;
100      this requires computing the index fields OB_Jn/Js/Ie/Iw in obcs_readparms;
101      the code can be turned on by setting OBCSfixTopo = .true. in data.obcs
102      --> changes results in exp4, seaice_obcs
103    o tutorial_deep_convection :
104      update the set-up and increase resolution and domain size ; start
105      from pseudo initial conditions = output at t=120mn in order to see
106      something happening when running testreport.
107    o pkg/seaice: add os7mp as an advection scheme
108                  add check for advection schemes
109                  add a flag for restoring T and S underneath sea ice
110    o pkg/my82: add netcdf-support and diagnostics
111    o thsice pkg:
112      - Now hsMax limits snow height by turning it into ice following
113        flooding scheme (and now conserving energy)
114      - Slight rewriting of the formula in thsice_calc_thick.F
115      - Parameter rhowi eliminated to be replaced by floodFac = (rhosw-rhoi)/rhos
116      --> changes results of global_ocean.cs32x15.icedyn and global_ocean.cs32x15.thsice
117    
118    checkpoint59p
119    o gchem / dic / cfc :
120      - add useDIC, useCFC , read from "data.gchem" (& hold in GCHEM.h);
121      - add new parameter files: "data.dic" & "data.cfc" ;
122      - various re-arrangement in initialisation & header file ;
123      - fix tutorial_global_oce_biogeo for multi-threaded test.
124    o pkg/dic: test for "pickup_dic" file when restarting ;
125      if no pickup-file, can restart with a re-initialised pH (same as it did
126      before) providing pickupStrictlyMatch is set to False.
127    o change argument list of S/R PTRACERS_WRITE_PICKUP & MYPACKAGE_WRITE_PICKUP
128      + fix call to S/R GGL90_WRITE_PICKUP & DIC_WRITE_PICKUP
129    o add a "warning" (to Error msg file) when an Active Tracer is not using AB-2
130      and staggerTimeStep is off (needed for stability of Internal-wave dynamics).
131    o move out of PARAMS.h & data the last pieces of old-ptracer code: tauTr1ClimRelax,
132     & lambdaTr1ClimRelax ; put those 2 params in PTRACERS_PARAMS.h & data.ptracers
133       (note: not clear to me what lambdaTr1ClimRelax is still used for ...)
134    o pkg/mom_vecinv: - new parameter "selectVortScheme" to select which
135       scheme to use for vorticty-term ;
136     - compute upwindVorticity=T case within mom_vi_u/v_coriolis_c4.F
137       (with default selectVortScheme, return to original discretisation)
138     - remove weird combination (e.g.: upwindVorticity & highOrderVorticity)
139    o pkg/seaice: add a line to the summary to indicate grid type (B/C)
140    o in mom_calc_visc, fix average value of viscAh_W & viscA4_W next to the
141      bottom ; only used with variable horizontal viscosity and non-hydrostatic.
142      also fix diagnostics VISCAHW & VISCA4W.
143    
144    checkpoint59o
145    o dome/code/obcs_calc.F: avoid division by zero (detected using gfortran).
146    o change the loop ordering in most gad_*_adv_x.F to improve vectorization:
147      move a few statemens out the main loop into separate loops
148    o pkg/shelfice:
149      - sort out freshwater flux; convert freshwater fluxes to mass fluxes
150        (kg/m^2/s), does not break tests, because in verification/isomip,
151        rhoConstFresh=rhoConst (by accident)
152      - rearrange computation of tLoc, sLoc, pLoc to make code more efficient
153      - move S/R find_rho_scalar, pkg/ecco/sw_ptmp.F, pkg/ecco/sw_adtg.F into
154        new file model/src/seawater.F, so that they are available for all pkgs.
155      - convert potential temperature into in-situ temperature. This changes the
156        isomip tests => update tests
157    o add a flag writePickupAtEnd (default=true) to be able to suppress
158      writing a pickup at the last timestep
159    o tools/mpack-1.6 :
160      - disable automake (not working) and autoconf (not needed).
161      - update to version 1.6.4 which fix MD5 code on some 64 bits platforms
162        also cleaner with much less compilation warnings.
163    o pkg/profiles:
164      rename profiles_interp_mean_genericgrid as profiles_interp_mean_gg
165      (for "less than 32 characters name" compiler requirement)
166    o pkg/obcs and pkg/exf: added capability to specify seaice open boundary
167      conditions that have a different sampling frequency than S/T/U/V obcs
168    o pkg/diagnostics (stats-diags):
169      - fix global Min/Max in case 1 processor get only empty tiles
170    o genmake2: replace (4 times)
171         make genmake_tc_1.o >> genmake_warnings 2>&1
172      with
173         COMM="$CC $CFLAGS -c genmake_tc_1.c"
174         echo $COMM >> genmake_warnings
175         $COMM >> genmake_warnings 2>&1
176      to make genmake2 always see the value of CC as specified in the optfile.
177    o generic_advdiff: - prather advection scheme (SOM) coded for CS-grid.
178      - add diagnostics for 1srt & 2nd Order moments and sub-grid variance.
179      - modify verification advect_cs test to test SOM-advection on CS-grid.
180    o pkg/ctrl:
181      - Rewrite of ctrl_map_ini_ecco.F,
182        introducing a generic routine (ctrl_map_ini_gen.F).
183      - Modification of ctrl_bound/adctrl_bound handling control vector bounds.
184    
185    checkpoint59n
186    o pkg/diagnostics: for large number of diagnostics, store diagnostic mate
187      number in dedicate array "hdiag":
188      - new version of S/R DIAGNOSTICS_ADD2LIST : DIAGNOSTICS_ADDTOLIST
189        with 1 more argument (mate number); modify old version DIAGNOSTICS_ADD2LIST.
190      - many small changes (integer format) for large number of diagnostics
191      - start to use DIAGNOSTICS_ADDTOLIST (necessary for diagnostics with
192        a counter mate) in pkg diagnostics, ptracers, thsice & aim_v23.
193    o add parameter rotateGrid and Euler angles EulerPhi/Theta/Psi. For
194      usingSphericalGrid, this allows to define the rotated grid coordinates
195      via phiMin/thetaMin/dxSpacing/dySpacing, etc., but then re-compute the
196      geographical coordinates according to the inverse of the rotation defined
197      by the Euler angles, so that Coriolis parameter and online-interpolation by
198      exf works with the geographical coordinates on XC/YC/XG/YG.
199      Naturally, this feature does not work with all packages, so some
200      combinations are prohibited in config_summary (flt, flt_zonal, ecco,
201      profiles), because there the coordinates are assumed to be regular
202      spherical grid coordinates.
203    o pkg/gmredi,ctrl,ecco,autodiff,grdchk and model/src,inc:
204      - introduce isopycnal diffusion coefficient control.
205    o tools/adjoint_options:
206      - additional control vector components.
207    o pkg/mnc: have mnc create marginally meaning full coordinate variables
208      (that is the grid indices) if usingCurvilinearGrid and NOT EXCH2
209    o pkg/mypackage:
210      - add example of read/write pickup for state-var ;
211      - add entry points to the main code for state-vars diags & write-pickup.
212    o pkg/exf: rewrite of exf_getffieldrec.F to properly deal with year
213      transitions for useExfYearlyFields
214      - add new subroutine that determines the file to read from for
215        use*YearlyFields = .TRUE. and .FALSE.
216      - add a verification experiment to global_with_exf that tests
217        useExfYearlyFields with USE_EXF_INTERPOLATION defined
218    o pkg/obcs/exf: add useOBCSYearlyFields (=.FALSE.) to obcs with exf in
219      analogy to useExfYearlyFields; rearrange obcs_prescribe_read: two new
220      subroutines (which could be generated from a template, because they are
221      almost identical), for now they are included in obcs_prescribe_read.F for
222      simplicity
223    o pkg/exf:
224      - add a little more diagnostic to exf_interp_read (in analogy to
225        mds_read_field, can be turned off with debugLevel < debugLevA=1)
226      - improve vectorizability of exf_interp for TARGET_NEC_SX, makes code
227        ugly but fast by unrolling short inner loops, inserting a unroll=8
228        directive in routine lagran, and splitting a loop and making do while the
229        outermost loop (the latter requires the intoduction of index arrays)
230    o pkg/obcs: replace obcs_apply_area/heff/hsalt/hsnow with obcs_apply_seaice
231    o pkg/seaice: moved DIFFERENT_MULTIPLE from seaice_model to seaice_dynsolver
232      http://forge.csail.mit.edu/pipermail/mitgcm-devel/2008-January/003173.html
233    o verification/seaice_obcs: updated for restart test and latest options
234    o pkg/seaice: add a new flag SEAICEuseTEM to use a slightly different
235      ice rheology (so-called truncated ellipse, that gets rid of tensile stress);
236      for now this is only available for the C-grid code and also within
237      #ifdef SEAICE_ALLOW_TEM, because this option may slow down the EVP code
238    
239    checkpoint59m
240    o pkg/seaice: use different time constant for melting (SEAICE_gamma_t)
241      and freezing (SEAICE_gamma_t_frz) ice due to mixed layer temperature
242    o gad_som : fix flux output (& diagnostics) to have same units as other  
243      advection scheme fluxes (was previously multiplied by deltaT).  
244    o added verification/seaice_obcs both to test seaice open boundaries
245      and to provide an example matlab scrpt for generating them
246    o added verification/lab_sea/input.salt_plume for testing pkg/salt_plume
247    o pkg/salt_plume: clean up salt_plume_frac.F to
248      remove redundancy in PlumeMethod 1 and 4
249    o pkg/kpp: added saltplume diagnostics
250    o pkg/obcs and pkg/seaice:
251      - do not set uice and vice to zero when OB*icefile are unspecified
252      - OBCS_SEAICE_AVOID_CONVERGENCE is undefined by default
253      - moved seaice tracer obcs after call to seaice_growth
254    o pkg/salt_plume: added various options for salt plume depth
255      criterion and for vertical distribution of the salt
256    
257    checkpoint59l
258    o pkg/ptracers: new version of ptracers pickup:
259      read meta file and write only fields which are needed to restart.
260      ( same logic as main pickup file ; also using pickupStrictlyMatch )
261    o pkg/seaice:
262      - add timescale for melting due to warm mixed layer as a means of
263        setting SEAICE_availHeatFrac more conveniently
264      - add a CPP-flag/runtime parameter check for flooding algorithm
265      - reformulated availHeat in seaice_growth.F to be independent of AREA
266    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
267      unit changes
268    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
269    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
270      SX vector computer.
271    o pkg/seaice:
272      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
273        seaice forcing fields can now be read only through pkg/exf
274      - removed some unused halos
275    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
276    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
277      or U/VICE from U/VWIND before computing U/VSTRESS
278    
279    checkpoint59k
280    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
281      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
282    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
283      all experiments pass when compile with un-initialised var. checking option.
284    o added pkg/salt_plume
285    o script to test restart (for now, in MITgcm_contrib/jmc_script)
286    o pkg/seaice: new read/write pickup version.
287      read meta file and write only fields which are needed to restart.
288      ( same logic as main pickup file ; also using pickupStrictlyMatch )
289    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
290    o lab_sea.hb87: modify the domain & update output.hb87.txt :
291      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
292      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
293      process. Fixed here by closing the domain at the Northern boundary.
294    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
295    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
296      a set of consecutive levels in/from a 3-D array.
297    o pkg/ptracers:
298      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
299      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
300    
301    checkpoint59j
302    o in pkgs: dic, obcs, offline, rbcs:
303      standard way to compute coeff. for time interpolation between 2 time reccords
304      which retains full precision (& make results less dependent on compiler).
305      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
306    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
307      packages instead of reading ice cover and wind speed separately
308    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
309     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
310      to allow to compile customized code before the update)
311    o cleaning-up:
312      - fix CPP instruction syntax in pkg/obcs
313      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
314        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
315      - fix some threads issue in IO parts.
316    o pkg/dic:
317      - add tons of "_d 0" (--> much better testreports !)
318       and then update outputs of tutorial_global_oce_biogeo
319    o pkg/mom_fluxform:
320      add a special version of momentum advection intended to conserve momentum
321      next to a bathymetry step or a coastline edge. (default = off = #undef)
322    o new read/write pickup version:
323      - for now, only implemented for main (mdsio) pickup file.
324      - write out only what is needed to restart; merge pickup_nh , pickup_ph
325        and main pickup together.
326      - read meta file; read only what is needed to restart; stop if a field
327        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
328        if it make sense (even if the restart is not perfect).
329      - if no meta file, assume that pickup to read corresponds exactly to
330        a pickup that would currently be written.
331      - read pickup written in the old format (until checkpoint59i) if it
332        recognizes an old meta file (no field-list).
333      - add a meta file in exp. which starts from a pickup: 2 cases:
334        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
335         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
336        b) a meta file describing the content of the associated pickup file
337         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
338    o pkg/mdsio & pkg/rw:
339      - new routine to read a meta file ; new set of routine to read
340        Multiple-fields file (with meta file).
341    o added open boundary conditions capability for seaice
342        HSNOW, HSALT, UICE, and VICE
343    
344    checkpoint59i
345    o adjoint:
346      * fix multiDimAdvection adjoint
347        (partial recomputation problem by TAF for fVerT(:,:,kDown)
348        and comlev1 size definition (maxpass vs. max. number of tracers)
349      * verification/global_ocean.90x45x15 adjoint now tests
350        NLFS and multiDimAdvection using DST3 (=30)
351      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
352    o pkg/kpp: add "_d 0" to real constant (if missing);
353      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
354      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
355    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
356      for internal parameters related to restart process (formerly from PARAMS.h)
357      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
358    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
359      as argument. (only atm2d & obcs write_pickup have not yet been updated)
360    o pkg/monitor:
361      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
362      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
363      - account for deep Atmosphere factor and density factor (anelastic)
364    o added open boundary conditions capability for seaice HEFF and AREA
365    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
366      thermodynamics
367      - requires a little reorganization, which affects the testreport results
368        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
369        so that now the conservative form is tested
370      - add a few comments
371    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
372    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
373    o add new diagnostics to seaice: advective, diffusive fluxes (only for
374      multidim-advection, for scheme 2 they are not filled) and transports,
375      thermodynamic growth rates
376    o change units of EmPmR (inside the code, + within coupling interface)
377      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
378      Affects results @ truncation level (cg2d match) and update output of
379       experiments: lab_sea(6), global_ocean.90x40x15(10),
380      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
381      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
382      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
383      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
384    
385    checkpoint59h
386    o pkg/exf:
387      - improve vectorization by moving if-statement out of loops in
388        exf_mapfields, exf_radiation
389      - exf_bulkformulae.F: introduce 2D fields and vectorize code
390    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
391    o testreport:
392      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
393        monitor & update offline_exf_seaice exp. output.
394      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
395    o pkg/seaice:
396      - bug fix in the evp solver: boundary conditions were affected be
397        masking of zMax/zMin (changes results)
398      - minor bug fix in boundary conditions in seaice_calc_strainrates
399        (changes results for no_slip)
400      - seaice_lsr.F: make interpolation of eta dependent on boundaries
401      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
402      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
403        stress formulation and no-slip boundary conditions
404    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
405      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
406    o pkg/seaice: a first HSALT time stepping equation has been checked in
407    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
408      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
409      without requiring DO-IF statements
410    o pkg/thsice:
411      use continuous power-law function for partition of energy between lateral
412      melting/freezing and thinning/thickening ; old code using step function
413      still available with #undef THSICE_FRACEN_POWERLAW
414      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
415    o testreport: change AD testing : check against results/output_adm.txt
416      using same scripts as for forward test.
417    
418    checkpoint59g
419    o adjoint testing: in preparation for changing testreport:
420      - output format: cost and grad written on separated lines
421      - ad output results in directory "results" (instead of "results_ad")
422    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
423    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
424    o pkg/ecco: allow user defined cost function contributions
425    o testreport:
426      Allow to choose (per experiment) the list of tested output variables
427       and the main variable (used to issue a pass/FAIL ) ;
428      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
429      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
430      Also modify printing of summary:
431       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
432       b) echo the list of tested variables in the individual summary.txt of
433          each experiment.
434    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
435      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
436      (but still depend on the tile decompostion of the domain).
437    o pkg/seaice: change a discretization detail to make the B-grid code
438      "more symmetric". This change is likely to remove all "ridges/leads" that
439      where quasi-aligned with the grid in B-grid solutions. It may also be
440      the solution to the stress coupling issues with the B-grid.
441    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
442      remove .cvsignore from input dir. (since testreport no longer run here).
443    o pkg/thsice:
444     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
445     - fix reshaping of sea-ice just after advection:
446       melt all the ice only if ice-volume is too small.
447     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
448       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
449     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
450    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
451      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
452    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
453      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
454      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
455      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
456      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
457      -> update output.txt
458    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
459     this affects truncation error: -> update output.txt of exp:
460      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
461      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
462    
463    checkpoint59f
464    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
465    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
466      a bounded range (in forward mode)
467    o pkg/ecco, ctrl, autodiff and mom_common:
468     internal parameter controls, completements of implementations
469    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
470    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
471      (not seem any difference in testing results).
472    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
473       at face corners.
474    o pkg/generic_advdiff:
475     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
476      loop range indices for computing vertical advection tendency
477      and do the calculation in the interior only (no overlap) ;
478      for now, only implemented for SOM advection (to save CPU time).
479     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
480    o exch2 adjoint
481      First set of changes:
482      - add exch2 hand-written adjoint templates
483      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
484        This will require cleanup in pkg/autodiff/*.F
485        (changed routines currently kept separate in verif. code/)
486      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
487        that used to hide exch2 or cubed-sphere specific code
488        (commented via 'cph-exch2')
489    o pkg/seaice
490      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
491    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
492       output of global_ocean.cs32x15.thsice .
493    
494    checkpoint59e
495    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
496      for B-grid vector (not yet tested) and C-grid vector (<- only used
497      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
498    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
499      (#ifdef ALLOW_SALT_PLUME)
500    o gather_2d/scatter_2d: removed halo regions
501    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
502      scheme and the corresponding test case (under front_relax dir). For now,
503      only available with Skew-flux form and not yet tested in realistic set-up.
504      adjoint: store directives updated, but gradient checks deteriorated,
505      so maybe GM/Redi adjoint is now broken.
506    o seaice adjoint
507      * add AREA, HEFF, HSNOW as control variable
508        (should not change lab_sea results)
509      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
510    o pkg/seaice:
511      * added computation of saltFlux in seaice_growth;
512        For time being, sea ice salinity is assumed constant
513        contribution of snow flooding to freshening of sea ice is neglected.
514        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
515        defaults to 0.0 in order to maintain backward compatibility.
516        Typical values for SEAICE_salinity are 4 to 10 g/kg.
517      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
518      * added SEAICE_availHeatFrac, which specifies fraction of surface level
519        heat content used to melt or grow ice
520      * commented out cap of HICE: it helps keep ice thinner
521      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
522      * applied OBCS T/S mask to HEFFM sea ice mask
523    
524    checkpoint59d
525    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
526     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
527     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
528    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
529     and change default value of parameter "GM_Small_Number";
530     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
531       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
532       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
533    o pkg/ecco: cost function when applying pkg/smooth to controls
534    o pkg/ctrl: add forcingPrecond run time parameter
535    o pkg/seaice:
536     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
537     - fix bug in metric terms of u-equation in LSR solver (implicit part),
538       changes verification/lab_sea
539     - rearrange implicit part of u-equation in LSR solver to make it easier to
540       read, understand, and debug. This causes changes at the truncation level.
541     - fix (serious) bug in the boundary conditions (sign error in the implicit
542       part) of the LSR solver. Changes all LSR results.
543     - fixed problem with HSNOW initialization to avoid thick snow when AREA
544       is initilized with small values - does not change lab_sea results.
545     - added HsnowFile initialization capability
546    o pkg/smooth: addition to model/src and pkg/ctrl so allow
547     initialization of pkg/smooth and application to control vector
548    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
549    o dependencies: pkg/profiles requires pkg/cal
550    o pkg/profiles:
551     - added option ALLOW_PROFILES_GENERICGRID
552         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
553         that interpolation information (grid points and coefficients) is provided
554         within the netcdf input files.
555         -> sample matlab scripts can be found in MITgcm_contrib/gael
556         that allow you to prepare netcdf input files.
557     - also modified: cleaner include statements, cleaner error print statements,
558       cleaner stops when error, and more tests of the netcdf input files consistency.
559    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
560    o pkg/seaice:
561     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
562       requires a new routine: seaice_diagnostics_fill.F
563     - make sure that seaice does not move if not forced (pressure replacement
564       method, Hibler and Ip, 1995), changes results
565     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
566     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
567       It is turned off by default (=-1.), because it changes the results.
568     - make it possible to read AREA from a file, too.
569    
570    checkpoint59c
571    o add S/R and diagnostics for oceanic mixed-layer depth
572    o move GMRedi call after all vertical mixing schemes (including KPP)
573    o pkg/thsice:
574     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
575      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
576    o pkg/obcs:
577     - bug fix for balance code
578    o pkg/seaice:
579      - allow values of SEAICE_elasticParm > 1
580      - add new parameter SEAICE_evpTauRelax as an alternative
581        to SEAICE_elasticParm
582      - make lsr boundary conditions free slip (by default), changes result
583      - add code for no slip boundary conditions for lsr
584      - set minimum of zeta to zero (and not 4e8) (changes results)
585      - add a cap on AREA after advecting AREA if seaice_growth is not called
586    o change calculation of Visbeck K:
587      - no longer depend on tapering scheme; instead, compute slope (limited
588        by GM_maxSlope). this is equivalent to what was comuted before with
589        clipping or linear tappering.
590      - fix vertical averaging (wrong by 1/2 level)
591      - leave the old version (but will not be maintained) within
592        #ifdef OLD_VISBECK_CALC / #endif
593      - update output of exp. ideal_2D_oce
594    o change error catch in calc_r_star to improve vectorization
595    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
596      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
597    o adjoint:
598      Re-organized adjoint checkpointing according to Matt Mazloff
599      (but with modifs/completions/cleanups)
600      Storing is now bundled into large arrays to optimized I/O
601      (and second step in cleanup of the_main_loop)
602    
603    checkpoint59b
604    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
605      - export/import (between ocean & coupler) fields needed for ocean DIC.
606    o pkg/seaice:
607      - get rid of three more exchanges seaice_calc_viscosities (required
608        different loop boundaries in seaice_lsr and seaice_ocean_stress)
609      - bug fix in seaice_ocean_stress (update of lab_sea required)
610      - reduce loop boundaries to necessary minimum also in seaice_evp
611      - go back to the old way of computing deltaC/Z as the adjoint likes that
612        better
613    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
614      passive tracer to an Age Tracer) + update output.txt
615    o pkg/exf:
616      - implement A-grid / C-grid selection for wind-stress input files.
617      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
618      for now, in exf_bulk_largeyeager04.F only :
619      - change implementation for case where windspeed + 2. components wind-stress
620        are read-in. AND use rhoConstFresh to convert evap.
621    o pkg/seaice:
622      - use correct EXCH_UV for wind-forcing (on A-grid).
623      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
624        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
625    o pkg/exf:
626      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
627      EXF_INTERPOLATION:
628      - merge global_with_exf/code version of exf_interp_read.F
629        to the main code ;
630      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
631        reading the file ; Important: This options needs to be defined to recover
632        previous code.
633        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
634      - no longer loose real*8 precision along the way when using exf_iprec=64.
635    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
636      - change discretisation of evp-solver in order to avoid another exchange
637        (changes lab_sea) and clean up a little
638      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
639        help the adjoint (this also changes the results slightly)
640      - add a few "_d 0" where they had been missing in seaice_evp.F
641      - cleaning up: remove unused seaice_calc_rhs.F
642    o pkg/exf: some cleaning-up:
643      - change various "constants" into runtime parameters
644      - cleaned-up Large&Yeager04 routine which should eventually
645        replace exf_bulkformulae.F (changed names of S/R and CPP)
646        and merged various ALLOW_ATM_WIND options
647     only used with thsice pkg (in thsice_get_exf.F):
648      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
649        which are used when useStabilityFct_overIce=TRUE (= the default)
650      - change default values of ice & snow emissivity and scale downward LW
651        by ice & snow emissivity.
652    o pkg/thsice:
653     fix few little problems, in thsice_calc_thickn.F:
654      - growth vertically (and not laterally) if iceFrac == iceMaskMax
655      - melt only laterally if hIce < hThinIce (as the comments say)
656      and in thsice_extend.F:
657      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
658      - start to form ice as soon as the minimum ice-volume is reachable.
659     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
660      and cpl_aim+ocn
661    o pkg/kpp
662     - move computation of surface related input fields to KPP into a new
663       subroutine kpp_forcing_surf.F
664     - remove wrong (within bi,bj loops) EXCH calls.
665     - little cleaning (add argument myThid in last position, cvs header ...)
666     - for now, fix conservation problem by exchanging KPPviscAz (may not
667       be the best fix)
668    o pkg/seaice
669     - check for inconsistent evp parameter/cpp-flag combination
670     - remove leftover errIO flat for obsolete name list error handling
671    o OpenAD
672     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
673    
674    checkpoint59a
675    o pkg/seaice: some parameter clarifications and a little bit of clean up
676    o pkg/thsice: rename run-time parameters:
677       himin       -> hIceMin
678       himin0      -> hThinIce
679       hihig       -> hThickIce
680       i0          -> i0swFrac
681       transCoef   -> bMeltCoef
682       frac_energy -> fracMelting
683      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
684       with default values (for now) that do not change the results.
685      remove old version of thsice vars advection in pkg/seaice.
686    o in FFIELDS.h:
687      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
688      - make pLoad & sIceLoad always available (but still only used if
689         ATMOSPHERIC_LOADING is #define).
690    o pkg/kpp: replaced _KPP_RL with _RL
691    o bug fixes for vertical diffusivity computations when both KPP and
692        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
693        are no longer updating the vertical diffusivity array
694        (passed as argument) but are (re-) setting those arrays.
695    o pkg/seaice: fix bug in evp solver, while doing that
696      - change (improve?) discretization of stress computations for both
697        cgrid-lsr and evp solver
698      - add a new routine to compute strain rates
699      - the above changes lab_sea results
700      - add no slip conditions for evp solver (off by default), lsr-version
701        may follow
702      - fix exchange for shear at Z-points (does not change lab_sea)
703      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
704        (to force the user to pick a time step since there is not "safe" way
705        of choosing it)
706      - add principal stress diagnostics
707      - rearrange fields for evp a little to avoid having to call a: too many
708        exchanges and b: exchanges for stress trensor components which we do
709        not have.
710      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
711        of evp, complete rewrite for lsr case (latter is does not yet work
712        in all cases)
713    o pkg/kpp: add code to have mixing in shelf ice caverns
714      - add myThid to all kpp routines (long overdue)
715    
716    checkpoint59
717    o pkg/exf:
718      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
719        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
720      - move exf header files from lower_case.h to UPPER_CASE.h ;
721        add missing cvs Header & Name
722      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
723      - add namelist param. selectStressGridPosition, exf_monFreq
724      - retire many _CLIM routines, and remove data.exf_clim
725        + params moved to data.exf
726        + climsst, climsss now handled by exf_set_gen, i.e.
727          climss?period=0 refers to constant field,
728          climss?period=-12 to monthly forcing
729      - split up namelists in data.exf
730    o pkg/seaice:
731      - remove seaice_exch and seaice_exch_uv
732      - remove superfluous exchange of theta
733      - add myThid to seaice_budget_ocean/ice
734      - add new interface for atmospheric wind forcing (C-grid only)
735        + new routine
736        + two new field (taux, tauy for stress over ice)
737        + removed one global field (DAIRN) for C-grid case only
738    o pkg/thsise
739      - 2nd set of modifs for thsice adjoint in conjunction with exf
740    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
741    
742    checkpoint58y_post
743    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
744      vertical diffusivity, similar to that in MOM4; turned on using
745      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
746      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
747    o Added capability for 3D specification of background vertical diffusion
748      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
749      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
750      "data" file that contains the 3D vertical diffusivity coefficients.
751    o ice dynamics (pkg/seaice) with thsice thermodynamics:
752      - add code within pkg thsice to advect & diffuse sea-ice fields
753      similar to (and will replace) what has been added in  seaice_advdiff.F,
754      but: - conserving Mass, Heat & Salt.
755           - better when using non-linear advection scheme (not yet fully tested)
756           - can also be used in atmospheric set-up (for now, only the diffusion).
757    
758    checkpoint58x_post
759    o IO option for global-file compact format:
760      - add options when generating topology (utils/exch2/matlab-topology-generator)
761      - add I/O capability (pkg/mdsio).
762      - adapt utils/matlab/rdmds.m to read this format.
763      for now long-line format not yet supported by pkg/mdsio (& exch2).
764    o shelfice: add a few diagnostics
765    
766    checkpoint58w_post
767    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
768      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
769      (and replace horiVertRatio in NH code).
770      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
771                         and tutorial_plume_on_slope (sensitive to truncation)
772    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
773      directly to drive seaice model (C-grid only)
774    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
775     - reintroduce computation of wind from stress,
776     - compute tau (in exf_bulkformulae.F) from windstress averaged to
777       mass points to avoid tau = 0
778     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
779    o rdmnc.m: make it work with "global" files created with gluemnc
780    o rdmnc.m : some improvements in dealing with singleton dimension
781      (tested on all testreport mnc output files).
782    o genmake2: disable pkg/profiles if netcdf test fails.
783    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
784    o move call to cal_readparms up to make calendar parameters/variable available
785      to all packages
786    
787    checkpoint58v_post
788    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
789      useDynP_inEos_Zc tested.
790    o pkg/exf: changes to properly interpolate/mask/scale initial fields
791    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
792      and portions thereof.  See read_cs.txt for description and examples.
793    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
794      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
795      following the great-circle arc between those 2 points.
796    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
797      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
798    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
799     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
800     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
801     - still needs work (not working with some options ; efficiency to improve)
802       and serious testing.
803     - use this scheme for temperature & salinity in 2 advection test exp.:
804       advect_xy & advect_xz, respectively.
805    
806    checkpoint58u_post
807    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
808    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
809    o testreport: add option "-skipdir" to skip some test.
810    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
811      momentum calculation.
812    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
813    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
814      remove checkpoint.F and the_correction_step.F (no longer used);
815      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
816    o add option (linFSConserveTr) to correct for tracer source/sink due to
817      Linear Free surface
818  o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine  o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
819  o pkg/thsice: fix reading mnc-pickups  o pkg/thsice: fix reading mnc-pickups
820    

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