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revision 1.701 by gforget, Fri Jul 14 20:20:36 2006 UTC revision 1.1008 by mlosch, Mon Jun 30 14:26:26 2008 UTC
# Line 4  $Name$ Line 4  $Name$
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7  o profiles: now ok for mutli-threaded case  o pkg/mnc: small fix in mnc_handle_err: make sure that length of msgbuf
8      is exceeded
9    o testreport: modify syntax of awk, so that it works also with
10      awk, and not only with nawk and gawk
11    
12    checkpoint61
13    o autodiff
14      Change default for TAF usage by removing argument '-nonew_arg'
15      This changes TAF subroutine argument list (ordering of active var.)
16      Omission of this flag leads to incompatibility w.r.t. TAMC
17      To restore TAMC-compatibility, need following modifs:
18      * use adoptfile tools/adjoint_options/adjoint_tamc_compatibility
19      * use CPP option #define AUTODIFF_TAMC_COMPATIBILITY
20      Tested TAF version is 1.9.22
21      N.B.: exch2 hand-written adjoint code currently not TAMC compatible
22    
23    checkpoint60
24    --->>> This is the last checkpoint for which generating the adjoint
25    --->>> is done via the TAMC-compatibility TAF-flag "-nonewarg"
26    --->>> by default.
27    --->>> Future checkpoints will ommit this flag by default.
28    o pkg/generic_advdiff, os7mp: simplify and avoid division by zero.
29    o pkg/grdchk: Add gradient check to etan0 perturbations.
30    o pkg/exf: read ice area from file (#ifdef ALLOW_ICE_AREAMASK).
31    o pkg/autodiff: more flexibility in zeroadj.
32      model/src: modifying do_oceanic_phys.F accordingly.
33    o pkg/ctrl: Bounds for (kapgm,kapredi,eddypsi) parameter estimation.
34    o model/src and pkg/gmredi: GMREDI_WITH_STABLE_ADJOINT CPP option
35      special setup of gmredi for which the adjoint is stable
36      enough for parameter optimization.
37    o bridging the gap between eddy stress and GM.
38      -> eddyTau is replaced with eddyPsi (eddyTau = f x rho0 x eddyPsi)
39          along with a change in CPP option (now ALLOW_EDDYPSI).
40      -> when using GM w/ GM_AdvForm:
41          The total eddy streamfunction (Psi = eddyPsi + K x Slope)
42          is applied either in the tracer Eq. or in momentum Eq.
43          depending on data.gmredi (intro. GM_InMomAsStress).
44      -> ALLOW_EDDYPSI_CONTROL for estimation purpose.
45      The key modifications are in model/src/taueddy_external_forcing.F
46      pkg/gmredi/gmredi_calc_*F pkg/gmredi/gmredi_*transport.F
47    
48    checkpoint59r
49    o new S/R (pkg/mdsio/mdsio_facef_read.F) reading of sNx+1 x sNy+1 array
50      from per-face file (take S/R READSYMTILE_RS out of ini_curvilinear_grid.F);
51      fix option to read coriolis(@ cell-corner) from files with CS-grid.
52    o pkg/mnc: add some attributes to standard 1D-coordinate variables
53    o pkg/diagnostics: enforce missing_value attribute for scalar variables at
54      mass points, when using mnc for output
55      - add runtime parameter (missing_value, missing_value_int) to override
56        default (which is the value of getcon('UNDEF'))
57    o pkg/mnc: prepare mnc for the actual use of missing values with the
58      diagnostics package: small fix in mnc_cw_readwrite.template and more
59      initialisation of never used fields
60      - replace mnc_common.h and mnc_id_header.h with corresponding upper case
61      versions
62    o pkg/thsice/thsice_ini_vars.F added default initial values so that
63      thermodynamics sea ice solver does not blow up when some initial fields
64      are missing.
65    o move from external_forcing_surf.F to ini_forcing.F
66      the p-coord. hack consisting in using pLoad to set phi0surf ;
67      update output of tutorial_global_oce_in_p (affected @ truncation level).
68    o Freshen up a bit hs94.1x64x5, notably:
69      remove rotationPeriod and tRef=5*0. (adjoint only), and add
70      exactConserv=.TRUE.
71    o pkg/generic_advdiff:
72      change option GAD_ALLOW_SOM_ADVECT to GAD_ALLOW_TS_SOM_ADV which only
73      applies to files where Temperature & Salinity 2nd Order moments are used.
74    o pkg/ptracers: add second-order moment advection schemes (80 and 81);
75      this uses a dynamically allocated internal state data structure
76      (#define PTRACERS_ALLOW_DYN_STATE in PTRACERS_OPTIONS.h)
77      and requires a fortran 90 compiler
78    
79    checkpoint59q
80    o pkg/mom_vecinv: Add energy & enstrophy conserving scheme (selectVortScheme=3)
81       (from Sadourny, described by Burridge & Haseler, ECMWF Rep.4, 1977)
82    o Refresh tutorial_global_oce_biogeo, notably:
83      - change bathymetry (put back seamounts in ACC, use hFacs)
84      - change EOS (POLY3 --> JMD95Z)
85      - use Bryan-Lewis vertical diffusivity
86      - use multidimensional advection
87      - remove old virtual virtual in dic pkg, now done through ptracer pkg
88      - change a couple of parameters in dic pkg
89    o pkg/ctrl: change formula in adctrl_bound.F and add a parameter to ctrl_map_ini_gen.F
90    o pkg/obcs: change default to OBCSfixTopo = .true.,
91      - set OBCSfixTopo=.false. in exp4/input/data.obcs to reproduce old result
92      - replace "debugMode" with "debugLevel .GE. debLevB"
93    o implementation of TAF directives for gchem,cfc,dic
94    o remove "exp5" (replaced by tutorial_deep_convection).
95    o pkg/obcs: add code to fix topography gradients normal to open boundaries;
96      this requires computing the index fields OB_Jn/Js/Ie/Iw in obcs_readparms;
97      the code can be turned on by setting OBCSfixTopo = .true. in data.obcs
98      --> changes results in exp4, seaice_obcs
99    o tutorial_deep_convection :
100      update the set-up and increase resolution and domain size ; start
101      from pseudo initial conditions = output at t=120mn in order to see
102      something happening when running testreport.
103    o pkg/seaice: add os7mp as an advection scheme
104                  add check for advection schemes
105                  add a flag for restoring T and S underneath sea ice
106    o pkg/my82: add netcdf-support and diagnostics
107    o thsice pkg:
108      - Now hsMax limits snow height by turning it into ice following
109        flooding scheme (and now conserving energy)
110      - Slight rewriting of the formula in thsice_calc_thick.F
111      - Parameter rhowi eliminated to be replaced by floodFac = (rhosw-rhoi)/rhos
112      --> changes results of global_ocean.cs32x15.icedyn and global_ocean.cs32x15.thsice
113    
114    checkpoint59p
115    o gchem / dic / cfc :
116      - add useDIC, useCFC , read from "data.gchem" (& hold in GCHEM.h);
117      - add new parameter files: "data.dic" & "data.cfc" ;
118      - various re-arrangement in initialisation & header file ;
119      - fix tutorial_global_oce_biogeo for multi-threaded test.
120    o pkg/dic: test for "pickup_dic" file when restarting ;
121      if no pickup-file, can restart with a re-initialised pH (same as it did
122      before) providing pickupStrictlyMatch is set to False.
123    o change argument list of S/R PTRACERS_WRITE_PICKUP & MYPACKAGE_WRITE_PICKUP
124      + fix call to S/R GGL90_WRITE_PICKUP & DIC_WRITE_PICKUP
125    o add a "warning" (to Error msg file) when an Active Tracer is not using AB-2
126      and staggerTimeStep is off (needed for stability of Internal-wave dynamics).
127    o move out of PARAMS.h & data the last pieces of old-ptracer code: tauTr1ClimRelax,
128     & lambdaTr1ClimRelax ; put those 2 params in PTRACERS_PARAMS.h & data.ptracers
129       (note: not clear to me what lambdaTr1ClimRelax is still used for ...)
130    o pkg/mom_vecinv: - new parameter "selectVortScheme" to select which
131       scheme to use for vorticty-term ;
132     - compute upwindVorticity=T case within mom_vi_u/v_coriolis_c4.F
133       (with default selectVortScheme, return to original discretisation)
134     - remove weird combination (e.g.: upwindVorticity & highOrderVorticity)
135    o pkg/seaice: add a line to the summary to indicate grid type (B/C)
136    o in mom_calc_visc, fix average value of viscAh_W & viscA4_W next to the
137      bottom ; only used with variable horizontal viscosity and non-hydrostatic.
138      also fix diagnostics VISCAHW & VISCA4W.
139    
140    checkpoint59o
141    o dome/code/obcs_calc.F: avoid division by zero (detected using gfortran).
142    o change the loop ordering in most gad_*_adv_x.F to improve vectorization:
143      move a few statemens out the main loop into separate loops
144    o pkg/shelfice:
145      - sort out freshwater flux; convert freshwater fluxes to mass fluxes
146        (kg/m^2/s), does not break tests, because in verification/isomip,
147        rhoConstFresh=rhoConst (by accident)
148      - rearrange computation of tLoc, sLoc, pLoc to make code more efficient
149      - move S/R find_rho_scalar, pkg/ecco/sw_ptmp.F, pkg/ecco/sw_adtg.F into
150        new file model/src/seawater.F, so that they are available for all pkgs.
151      - convert potential temperature into in-situ temperature. This changes the
152        isomip tests => update tests
153    o add a flag writePickupAtEnd (default=true) to be able to suppress
154      writing a pickup at the last timestep
155    o tools/mpack-1.6 :
156      - disable automake (not working) and autoconf (not needed).
157      - update to version 1.6.4 which fix MD5 code on some 64 bits platforms
158        also cleaner with much less compilation warnings.
159    o pkg/profiles:
160      rename profiles_interp_mean_genericgrid as profiles_interp_mean_gg
161      (for "less than 32 characters name" compiler requirement)
162    o pkg/obcs and pkg/exf: added capability to specify seaice open boundary
163      conditions that have a different sampling frequency than S/T/U/V obcs
164    o pkg/diagnostics (stats-diags):
165      - fix global Min/Max in case 1 processor get only empty tiles
166    o genmake2: replace (4 times)
167         make genmake_tc_1.o >> genmake_warnings 2>&1
168      with
169         COMM="$CC $CFLAGS -c genmake_tc_1.c"
170         echo $COMM >> genmake_warnings
171         $COMM >> genmake_warnings 2>&1
172      to make genmake2 always see the value of CC as specified in the optfile.
173    o generic_advdiff: - prather advection scheme (SOM) coded for CS-grid.
174      - add diagnostics for 1srt & 2nd Order moments and sub-grid variance.
175      - modify verification advect_cs test to test SOM-advection on CS-grid.
176    o pkg/ctrl:
177      - Rewrite of ctrl_map_ini_ecco.F,
178        introducing a generic routine (ctrl_map_ini_gen.F).
179      - Modification of ctrl_bound/adctrl_bound handling control vector bounds.
180    
181    checkpoint59n
182    o pkg/diagnostics: for large number of diagnostics, store diagnostic mate
183      number in dedicate array "hdiag":
184      - new version of S/R DIAGNOSTICS_ADD2LIST : DIAGNOSTICS_ADDTOLIST
185        with 1 more argument (mate number); modify old version DIAGNOSTICS_ADD2LIST.
186      - many small changes (integer format) for large number of diagnostics
187      - start to use DIAGNOSTICS_ADDTOLIST (necessary for diagnostics with
188        a counter mate) in pkg diagnostics, ptracers, thsice & aim_v23.
189    o add parameter rotateGrid and Euler angles EulerPhi/Theta/Psi. For
190      usingSphericalGrid, this allows to define the rotated grid coordinates
191      via phiMin/thetaMin/dxSpacing/dySpacing, etc., but then re-compute the
192      geographical coordinates according to the inverse of the rotation defined
193      by the Euler angles, so that Coriolis parameter and online-interpolation by
194      exf works with the geographical coordinates on XC/YC/XG/YG.
195      Naturally, this feature does not work with all packages, so some
196      combinations are prohibited in config_summary (flt, flt_zonal, ecco,
197      profiles), because there the coordinates are assumed to be regular
198      spherical grid coordinates.
199    o pkg/gmredi,ctrl,ecco,autodiff,grdchk and model/src,inc:
200      - introduce isopycnal diffusion coefficient control.
201    o tools/adjoint_options:
202      - additional control vector components.
203    o pkg/mnc: have mnc create marginally meaning full coordinate variables
204      (that is the grid indices) if usingCurvilinearGrid and NOT EXCH2
205    o pkg/mypackage:
206      - add example of read/write pickup for state-var ;
207      - add entry points to the main code for state-vars diags & write-pickup.
208    o pkg/exf: rewrite of exf_getffieldrec.F to properly deal with year
209      transitions for useExfYearlyFields
210      - add new subroutine that determines the file to read from for
211        use*YearlyFields = .TRUE. and .FALSE.
212      - add a verification experiment to global_with_exf that tests
213        useExfYearlyFields with USE_EXF_INTERPOLATION defined
214    o pkg/obcs/exf: add useOBCSYearlyFields (=.FALSE.) to obcs with exf in
215      analogy to useExfYearlyFields; rearrange obcs_prescribe_read: two new
216      subroutines (which could be generated from a template, because they are
217      almost identical), for now they are included in obcs_prescribe_read.F for
218      simplicity
219    o pkg/exf:
220      - add a little more diagnostic to exf_interp_read (in analogy to
221        mds_read_field, can be turned off with debugLevel < debugLevA=1)
222      - improve vectorizability of exf_interp for TARGET_NEC_SX, makes code
223        ugly but fast by unrolling short inner loops, inserting a unroll=8
224        directive in routine lagran, and splitting a loop and making do while the
225        outermost loop (the latter requires the intoduction of index arrays)
226    o pkg/obcs: replace obcs_apply_area/heff/hsalt/hsnow with obcs_apply_seaice
227    o pkg/seaice: moved DIFFERENT_MULTIPLE from seaice_model to seaice_dynsolver
228      http://forge.csail.mit.edu/pipermail/mitgcm-devel/2008-January/003173.html
229    o verification/seaice_obcs: updated for restart test and latest options
230    o pkg/seaice: add a new flag SEAICEuseTEM to use a slightly different
231      ice rheology (so-called truncated ellipse, that gets rid of tensile stress);
232      for now this is only available for the C-grid code and also within
233      #ifdef SEAICE_ALLOW_TEM, because this option may slow down the EVP code
234    
235    checkpoint59m
236    o pkg/seaice: use different time constant for melting (SEAICE_gamma_t)
237      and freezing (SEAICE_gamma_t_frz) ice due to mixed layer temperature
238    o gad_som : fix flux output (& diagnostics) to have same units as other  
239      advection scheme fluxes (was previously multiplied by deltaT).  
240    o added verification/seaice_obcs both to test seaice open boundaries
241      and to provide an example matlab scrpt for generating them
242    o added verification/lab_sea/input.salt_plume for testing pkg/salt_plume
243    o pkg/salt_plume: clean up salt_plume_frac.F to
244      remove redundancy in PlumeMethod 1 and 4
245    o pkg/kpp: added saltplume diagnostics
246    o pkg/obcs and pkg/seaice:
247      - do not set uice and vice to zero when OB*icefile are unspecified
248      - OBCS_SEAICE_AVOID_CONVERGENCE is undefined by default
249      - moved seaice tracer obcs after call to seaice_growth
250    o pkg/salt_plume: added various options for salt plume depth
251      criterion and for vertical distribution of the salt
252    
253    checkpoint59l
254    o pkg/ptracers: new version of ptracers pickup:
255      read meta file and write only fields which are needed to restart.
256      ( same logic as main pickup file ; also using pickupStrictlyMatch )
257    o pkg/seaice:
258      - add timescale for melting due to warm mixed layer as a means of
259        setting SEAICE_availHeatFrac more conveniently
260      - add a CPP-flag/runtime parameter check for flooding algorithm
261      - reformulated availHeat in seaice_growth.F to be independent of AREA
262    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
263      unit changes
264    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
265    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
266      SX vector computer.
267    o pkg/seaice:
268      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
269        seaice forcing fields can now be read only through pkg/exf
270      - removed some unused halos
271    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
272    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
273      or U/VICE from U/VWIND before computing U/VSTRESS
274    
275    checkpoint59k
276    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
277      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
278    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
279      all experiments pass when compile with un-initialised var. checking option.
280    o added pkg/salt_plume
281    o script to test restart (for now, in MITgcm_contrib/jmc_script)
282    o pkg/seaice: new read/write pickup version.
283      read meta file and write only fields which are needed to restart.
284      ( same logic as main pickup file ; also using pickupStrictlyMatch )
285    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
286    o lab_sea.hb87: modify the domain & update output.hb87.txt :
287      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
288      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
289      process. Fixed here by closing the domain at the Northern boundary.
290    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
291    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
292      a set of consecutive levels in/from a 3-D array.
293    o pkg/ptracers:
294      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
295      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
296    
297    checkpoint59j
298    o in pkgs: dic, obcs, offline, rbcs:
299      standard way to compute coeff. for time interpolation between 2 time reccords
300      which retains full precision (& make results less dependent on compiler).
301      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
302    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
303      packages instead of reading ice cover and wind speed separately
304    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
305     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
306      to allow to compile customized code before the update)
307    o cleaning-up:
308      - fix CPP instruction syntax in pkg/obcs
309      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
310        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
311      - fix some threads issue in IO parts.
312    o pkg/dic:
313      - add tons of "_d 0" (--> much better testreports !)
314       and then update outputs of tutorial_global_oce_biogeo
315    o pkg/mom_fluxform:
316      add a special version of momentum advection intended to conserve momentum
317      next to a bathymetry step or a coastline edge. (default = off = #undef)
318    o new read/write pickup version:
319      - for now, only implemented for main (mdsio) pickup file.
320      - write out only what is needed to restart; merge pickup_nh , pickup_ph
321        and main pickup together.
322      - read meta file; read only what is needed to restart; stop if a field
323        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
324        if it make sense (even if the restart is not perfect).
325      - if no meta file, assume that pickup to read corresponds exactly to
326        a pickup that would currently be written.
327      - read pickup written in the old format (until checkpoint59i) if it
328        recognizes an old meta file (no field-list).
329      - add a meta file in exp. which starts from a pickup: 2 cases:
330        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
331         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
332        b) a meta file describing the content of the associated pickup file
333         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
334    o pkg/mdsio & pkg/rw:
335      - new routine to read a meta file ; new set of routine to read
336        Multiple-fields file (with meta file).
337    o added open boundary conditions capability for seaice
338        HSNOW, HSALT, UICE, and VICE
339    
340    checkpoint59i
341    o adjoint:
342      * fix multiDimAdvection adjoint
343        (partial recomputation problem by TAF for fVerT(:,:,kDown)
344        and comlev1 size definition (maxpass vs. max. number of tracers)
345      * verification/global_ocean.90x45x15 adjoint now tests
346        NLFS and multiDimAdvection using DST3 (=30)
347      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
348    o pkg/kpp: add "_d 0" to real constant (if missing);
349      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
350      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
351    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
352      for internal parameters related to restart process (formerly from PARAMS.h)
353      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
354    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
355      as argument. (only atm2d & obcs write_pickup have not yet been updated)
356    o pkg/monitor:
357      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
358      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
359      - account for deep Atmosphere factor and density factor (anelastic)
360    o added open boundary conditions capability for seaice HEFF and AREA
361    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
362      thermodynamics
363      - requires a little reorganization, which affects the testreport results
364        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
365        so that now the conservative form is tested
366      - add a few comments
367    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
368    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
369    o add new diagnostics to seaice: advective, diffusive fluxes (only for
370      multidim-advection, for scheme 2 they are not filled) and transports,
371      thermodynamic growth rates
372    o change units of EmPmR (inside the code, + within coupling interface)
373      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
374      Affects results @ truncation level (cg2d match) and update output of
375       experiments: lab_sea(6), global_ocean.90x40x15(10),
376      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
377      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
378      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
379      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
380    
381    checkpoint59h
382    o pkg/exf:
383      - improve vectorization by moving if-statement out of loops in
384        exf_mapfields, exf_radiation
385      - exf_bulkformulae.F: introduce 2D fields and vectorize code
386    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
387    o testreport:
388      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
389        monitor & update offline_exf_seaice exp. output.
390      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
391    o pkg/seaice:
392      - bug fix in the evp solver: boundary conditions were affected be
393        masking of zMax/zMin (changes results)
394      - minor bug fix in boundary conditions in seaice_calc_strainrates
395        (changes results for no_slip)
396      - seaice_lsr.F: make interpolation of eta dependent on boundaries
397      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
398      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
399        stress formulation and no-slip boundary conditions
400    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
401      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
402    o pkg/seaice: a first HSALT time stepping equation has been checked in
403    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
404      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
405      without requiring DO-IF statements
406    o pkg/thsice:
407      use continuous power-law function for partition of energy between lateral
408      melting/freezing and thinning/thickening ; old code using step function
409      still available with #undef THSICE_FRACEN_POWERLAW
410      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
411    o testreport: change AD testing : check against results/output_adm.txt
412      using same scripts as for forward test.
413    
414    checkpoint59g
415    o adjoint testing: in preparation for changing testreport:
416      - output format: cost and grad written on separated lines
417      - ad output results in directory "results" (instead of "results_ad")
418    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
419    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
420    o pkg/ecco: allow user defined cost function contributions
421    o testreport:
422      Allow to choose (per experiment) the list of tested output variables
423       and the main variable (used to issue a pass/FAIL ) ;
424      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
425      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
426      Also modify printing of summary:
427       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
428       b) echo the list of tested variables in the individual summary.txt of
429          each experiment.
430    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
431      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
432      (but still depend on the tile decompostion of the domain).
433    o pkg/seaice: change a discretization detail to make the B-grid code
434      "more symmetric". This change is likely to remove all "ridges/leads" that
435      where quasi-aligned with the grid in B-grid solutions. It may also be
436      the solution to the stress coupling issues with the B-grid.
437    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
438      remove .cvsignore from input dir. (since testreport no longer run here).
439    o pkg/thsice:
440     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
441     - fix reshaping of sea-ice just after advection:
442       melt all the ice only if ice-volume is too small.
443     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
444       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
445     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
446    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
447      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
448    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
449      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
450      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
451      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
452      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
453      -> update output.txt
454    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
455     this affects truncation error: -> update output.txt of exp:
456      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
457      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
458    
459    checkpoint59f
460    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
461    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
462      a bounded range (in forward mode)
463    o pkg/ecco, ctrl, autodiff and mom_common:
464     internal parameter controls, completements of implementations
465    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
466    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
467      (not seem any difference in testing results).
468    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
469       at face corners.
470    o pkg/generic_advdiff:
471     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
472      loop range indices for computing vertical advection tendency
473      and do the calculation in the interior only (no overlap) ;
474      for now, only implemented for SOM advection (to save CPU time).
475     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
476    o exch2 adjoint
477      First set of changes:
478      - add exch2 hand-written adjoint templates
479      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
480        This will require cleanup in pkg/autodiff/*.F
481        (changed routines currently kept separate in verif. code/)
482      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
483        that used to hide exch2 or cubed-sphere specific code
484        (commented via 'cph-exch2')
485    o pkg/seaice
486      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
487    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
488       output of global_ocean.cs32x15.thsice .
489    
490    checkpoint59e
491    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
492      for B-grid vector (not yet tested) and C-grid vector (<- only used
493      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
494    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
495      (#ifdef ALLOW_SALT_PLUME)
496    o gather_2d/scatter_2d: removed halo regions
497    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
498      scheme and the corresponding test case (under front_relax dir). For now,
499      only available with Skew-flux form and not yet tested in realistic set-up.
500      adjoint: store directives updated, but gradient checks deteriorated,
501      so maybe GM/Redi adjoint is now broken.
502    o seaice adjoint
503      * add AREA, HEFF, HSNOW as control variable
504        (should not change lab_sea results)
505      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
506    o pkg/seaice:
507      * added computation of saltFlux in seaice_growth;
508        For time being, sea ice salinity is assumed constant
509        contribution of snow flooding to freshening of sea ice is neglected.
510        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
511        defaults to 0.0 in order to maintain backward compatibility.
512        Typical values for SEAICE_salinity are 4 to 10 g/kg.
513      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
514      * added SEAICE_availHeatFrac, which specifies fraction of surface level
515        heat content used to melt or grow ice
516      * commented out cap of HICE: it helps keep ice thinner
517      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
518      * applied OBCS T/S mask to HEFFM sea ice mask
519    
520    checkpoint59d
521    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
522     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
523     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
524    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
525     and change default value of parameter "GM_Small_Number";
526     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
527       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
528       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
529    o pkg/ecco: cost function when applying pkg/smooth to controls
530    o pkg/ctrl: add forcingPrecond run time parameter
531    o pkg/seaice:
532     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
533     - fix bug in metric terms of u-equation in LSR solver (implicit part),
534       changes verification/lab_sea
535     - rearrange implicit part of u-equation in LSR solver to make it easier to
536       read, understand, and debug. This causes changes at the truncation level.
537     - fix (serious) bug in the boundary conditions (sign error in the implicit
538       part) of the LSR solver. Changes all LSR results.
539     - fixed problem with HSNOW initialization to avoid thick snow when AREA
540       is initilized with small values - does not change lab_sea results.
541     - added HsnowFile initialization capability
542    o pkg/smooth: addition to model/src and pkg/ctrl so allow
543     initialization of pkg/smooth and application to control vector
544    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
545    o dependencies: pkg/profiles requires pkg/cal
546    o pkg/profiles:
547     - added option ALLOW_PROFILES_GENERICGRID
548         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
549         that interpolation information (grid points and coefficients) is provided
550         within the netcdf input files.
551         -> sample matlab scripts can be found in MITgcm_contrib/gael
552         that allow you to prepare netcdf input files.
553     - also modified: cleaner include statements, cleaner error print statements,
554       cleaner stops when error, and more tests of the netcdf input files consistency.
555    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
556    o pkg/seaice:
557     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
558       requires a new routine: seaice_diagnostics_fill.F
559     - make sure that seaice does not move if not forced (pressure replacement
560       method, Hibler and Ip, 1995), changes results
561     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
562     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
563       It is turned off by default (=-1.), because it changes the results.
564     - make it possible to read AREA from a file, too.
565    
566    checkpoint59c
567    o add S/R and diagnostics for oceanic mixed-layer depth
568    o move GMRedi call after all vertical mixing schemes (including KPP)
569    o pkg/thsice:
570     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
571      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
572    o pkg/obcs:
573     - bug fix for balance code
574    o pkg/seaice:
575      - allow values of SEAICE_elasticParm > 1
576      - add new parameter SEAICE_evpTauRelax as an alternative
577        to SEAICE_elasticParm
578      - make lsr boundary conditions free slip (by default), changes result
579      - add code for no slip boundary conditions for lsr
580      - set minimum of zeta to zero (and not 4e8) (changes results)
581      - add a cap on AREA after advecting AREA if seaice_growth is not called
582    o change calculation of Visbeck K:
583      - no longer depend on tapering scheme; instead, compute slope (limited
584        by GM_maxSlope). this is equivalent to what was comuted before with
585        clipping or linear tappering.
586      - fix vertical averaging (wrong by 1/2 level)
587      - leave the old version (but will not be maintained) within
588        #ifdef OLD_VISBECK_CALC / #endif
589      - update output of exp. ideal_2D_oce
590    o change error catch in calc_r_star to improve vectorization
591    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
592      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
593    o adjoint:
594      Re-organized adjoint checkpointing according to Matt Mazloff
595      (but with modifs/completions/cleanups)
596      Storing is now bundled into large arrays to optimized I/O
597      (and second step in cleanup of the_main_loop)
598    
599    checkpoint59b
600    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
601      - export/import (between ocean & coupler) fields needed for ocean DIC.
602    o pkg/seaice:
603      - get rid of three more exchanges seaice_calc_viscosities (required
604        different loop boundaries in seaice_lsr and seaice_ocean_stress)
605      - bug fix in seaice_ocean_stress (update of lab_sea required)
606      - reduce loop boundaries to necessary minimum also in seaice_evp
607      - go back to the old way of computing deltaC/Z as the adjoint likes that
608        better
609    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
610      passive tracer to an Age Tracer) + update output.txt
611    o pkg/exf:
612      - implement A-grid / C-grid selection for wind-stress input files.
613      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
614      for now, in exf_bulk_largeyeager04.F only :
615      - change implementation for case where windspeed + 2. components wind-stress
616        are read-in. AND use rhoConstFresh to convert evap.
617    o pkg/seaice:
618      - use correct EXCH_UV for wind-forcing (on A-grid).
619      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
620        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
621    o pkg/exf:
622      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
623      EXF_INTERPOLATION:
624      - merge global_with_exf/code version of exf_interp_read.F
625        to the main code ;
626      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
627        reading the file ; Important: This options needs to be defined to recover
628        previous code.
629        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
630      - no longer loose real*8 precision along the way when using exf_iprec=64.
631    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
632      - change discretisation of evp-solver in order to avoid another exchange
633        (changes lab_sea) and clean up a little
634      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
635        help the adjoint (this also changes the results slightly)
636      - add a few "_d 0" where they had been missing in seaice_evp.F
637      - cleaning up: remove unused seaice_calc_rhs.F
638    o pkg/exf: some cleaning-up:
639      - change various "constants" into runtime parameters
640      - cleaned-up Large&Yeager04 routine which should eventually
641        replace exf_bulkformulae.F (changed names of S/R and CPP)
642        and merged various ALLOW_ATM_WIND options
643     only used with thsice pkg (in thsice_get_exf.F):
644      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
645        which are used when useStabilityFct_overIce=TRUE (= the default)
646      - change default values of ice & snow emissivity and scale downward LW
647        by ice & snow emissivity.
648    o pkg/thsice:
649     fix few little problems, in thsice_calc_thickn.F:
650      - growth vertically (and not laterally) if iceFrac == iceMaskMax
651      - melt only laterally if hIce < hThinIce (as the comments say)
652      and in thsice_extend.F:
653      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
654      - start to form ice as soon as the minimum ice-volume is reachable.
655     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
656      and cpl_aim+ocn
657    o pkg/kpp
658     - move computation of surface related input fields to KPP into a new
659       subroutine kpp_forcing_surf.F
660     - remove wrong (within bi,bj loops) EXCH calls.
661     - little cleaning (add argument myThid in last position, cvs header ...)
662     - for now, fix conservation problem by exchanging KPPviscAz (may not
663       be the best fix)
664    o pkg/seaice
665     - check for inconsistent evp parameter/cpp-flag combination
666     - remove leftover errIO flat for obsolete name list error handling
667    o OpenAD
668     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
669    
670    checkpoint59a
671    o pkg/seaice: some parameter clarifications and a little bit of clean up
672    o pkg/thsice: rename run-time parameters:
673       himin       -> hIceMin
674       himin0      -> hThinIce
675       hihig       -> hThickIce
676       i0          -> i0swFrac
677       transCoef   -> bMeltCoef
678       frac_energy -> fracMelting
679      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
680       with default values (for now) that do not change the results.
681      remove old version of thsice vars advection in pkg/seaice.
682    o in FFIELDS.h:
683      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
684      - make pLoad & sIceLoad always available (but still only used if
685         ATMOSPHERIC_LOADING is #define).
686    o pkg/kpp: replaced _KPP_RL with _RL
687    o bug fixes for vertical diffusivity computations when both KPP and
688        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
689        are no longer updating the vertical diffusivity array
690        (passed as argument) but are (re-) setting those arrays.
691    o pkg/seaice: fix bug in evp solver, while doing that
692      - change (improve?) discretization of stress computations for both
693        cgrid-lsr and evp solver
694      - add a new routine to compute strain rates
695      - the above changes lab_sea results
696      - add no slip conditions for evp solver (off by default), lsr-version
697        may follow
698      - fix exchange for shear at Z-points (does not change lab_sea)
699      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
700        (to force the user to pick a time step since there is not "safe" way
701        of choosing it)
702      - add principal stress diagnostics
703      - rearrange fields for evp a little to avoid having to call a: too many
704        exchanges and b: exchanges for stress trensor components which we do
705        not have.
706      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
707        of evp, complete rewrite for lsr case (latter is does not yet work
708        in all cases)
709    o pkg/kpp: add code to have mixing in shelf ice caverns
710      - add myThid to all kpp routines (long overdue)
711    
712    checkpoint59
713    o pkg/exf:
714      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
715        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
716      - move exf header files from lower_case.h to UPPER_CASE.h ;
717        add missing cvs Header & Name
718      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
719      - add namelist param. selectStressGridPosition, exf_monFreq
720      - retire many _CLIM routines, and remove data.exf_clim
721        + params moved to data.exf
722        + climsst, climsss now handled by exf_set_gen, i.e.
723          climss?period=0 refers to constant field,
724          climss?period=-12 to monthly forcing
725      - split up namelists in data.exf
726    o pkg/seaice:
727      - remove seaice_exch and seaice_exch_uv
728      - remove superfluous exchange of theta
729      - add myThid to seaice_budget_ocean/ice
730      - add new interface for atmospheric wind forcing (C-grid only)
731        + new routine
732        + two new field (taux, tauy for stress over ice)
733        + removed one global field (DAIRN) for C-grid case only
734    o pkg/thsise
735      - 2nd set of modifs for thsice adjoint in conjunction with exf
736    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
737    
738    checkpoint58y_post
739    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
740      vertical diffusivity, similar to that in MOM4; turned on using
741      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
742      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
743    o Added capability for 3D specification of background vertical diffusion
744      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
745      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
746      "data" file that contains the 3D vertical diffusivity coefficients.
747    o ice dynamics (pkg/seaice) with thsice thermodynamics:
748      - add code within pkg thsice to advect & diffuse sea-ice fields
749      similar to (and will replace) what has been added in  seaice_advdiff.F,
750      but: - conserving Mass, Heat & Salt.
751           - better when using non-linear advection scheme (not yet fully tested)
752           - can also be used in atmospheric set-up (for now, only the diffusion).
753    
754    checkpoint58x_post
755    o IO option for global-file compact format:
756      - add options when generating topology (utils/exch2/matlab-topology-generator)
757      - add I/O capability (pkg/mdsio).
758      - adapt utils/matlab/rdmds.m to read this format.
759      for now long-line format not yet supported by pkg/mdsio (& exch2).
760    o shelfice: add a few diagnostics
761    
762    checkpoint58w_post
763    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
764      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
765      (and replace horiVertRatio in NH code).
766      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
767                         and tutorial_plume_on_slope (sensitive to truncation)
768    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
769      directly to drive seaice model (C-grid only)
770    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
771     - reintroduce computation of wind from stress,
772     - compute tau (in exf_bulkformulae.F) from windstress averaged to
773       mass points to avoid tau = 0
774     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
775    o rdmnc.m: make it work with "global" files created with gluemnc
776    o rdmnc.m : some improvements in dealing with singleton dimension
777      (tested on all testreport mnc output files).
778    o genmake2: disable pkg/profiles if netcdf test fails.
779    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
780    o move call to cal_readparms up to make calendar parameters/variable available
781      to all packages
782    
783    checkpoint58v_post
784    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
785      useDynP_inEos_Zc tested.
786    o pkg/exf: changes to properly interpolate/mask/scale initial fields
787    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
788      and portions thereof.  See read_cs.txt for description and examples.
789    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
790      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
791      following the great-circle arc between those 2 points.
792    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
793      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
794    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
795     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
796     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
797     - still needs work (not working with some options ; efficiency to improve)
798       and serious testing.
799     - use this scheme for temperature & salinity in 2 advection test exp.:
800       advect_xy & advect_xz, respectively.
801    
802    checkpoint58u_post
803    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
804    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
805    o testreport: add option "-skipdir" to skip some test.
806    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
807      momentum calculation.
808    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
809    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
810      remove checkpoint.F and the_correction_step.F (no longer used);
811      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
812    o add option (linFSConserveTr) to correct for tracer source/sink due to
813      Linear Free surface
814    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
815    o pkg/thsice: fix reading mnc-pickups
816    
817    checkpoint58t_post
818    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
819    o pkg/mdsio:
820     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
821       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
822       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
823     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
824     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
825       either MDS_READ_FIELD or MDS_WRITE_FIELD )
826     - new S/R (to replace MDSWRITEMETA), which allows to write more
827       informations (variable names, time ...) to meta files.
828     - modify rdmds.m to give back the meta file content.
829    o pkg/diagnostics: change vertical interpolation to be safer, and more
830       flexible (define p-levels to interpolate to in data.diagnostics);
831      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
832       diagnostic pointer.
833    o pkg/seaice: more cleaning up of seaice_growth, added many comments
834    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
835    o fix multi-category seaice:
836     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
837       SEAICE_MULTICATEGORY
838     - fix short wave heat flux
839    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
840       and allow to use EVP solver. Change forward lab_sea: test both EVP
841       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
842    o Initial check-in of lab_sea adjoint
843      (very similar to natl_box_adjoint/code_seaice)
844      * used C-grid and EVP solver
845      * used KPP, GM/Redi
846      * uses inAdExact=.TRUE.
847      * gradient checks fail for both ADM and TLM
848        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
849        f.d. gradients actually seem more problematic than ADM, TLM gradients;
850        issue is related to forward mismatch between g77 an ifort
851    o pkg/seaice: overhaul of thermodynamics
852     - growth.F and groatb.F are replaced by new routine seaice_growth.F
853     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
854     - move a few global fields out of SEAICE.h into seaice_growth.F and
855       make them 2D (FICE/QNETO/ ...)
856     - remove FO (it is the same as QNETO)
857     - introduce a few local fields to avoid modifying external fields such
858       as atemp, etc.
859    
860    checkpoint58s_post
861    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
862      changed exf_set_gen.F so that
863        genperiod=0 means input file is one time-constant field and
864        genperiod=-12 means input file contains 12 monthly means
865    o CG2D: use pre-computed solver main-diagonal (stored in common block);
866      this affects truncation error ; generate new output file for exp. which
867      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
868        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
869        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
870        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
871        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
872        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
873    o start implementation of deep-atmosphere and anelastic formulation
874    o verification: remove 2nd copy of input files and use script "prepare_run"
875      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
876    o mom_common/vecinv/fluxform: fix a few initialisation isssues
877    o profiles: fix for multithreaded case
878    
879    o diagnostics: rename few diags:
880      s/'PRESSURE'/'RCENTER '/g
881      s/'TICE    '/'oceFreez'/g
882      s/'TAUX    '/'oceTAUX '/g
883      s/'TAUY    '/'oceTAUY '/g
884      s/'SWFLUX  '/'oceQsw  '/g
885      s/DIFx/DFxE/g
886      s/DIFy/DFyE/g
887      and add few ocean-forcing diagnostics:
888      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
889    o modifications to pkg/seaice/growth.F and budget.F, which change results of
890      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
891      as actual snow thickness.  It now refers everywhere to effective snow
892      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
893    
894    checkpoint58r_post
895    o modifications to pkg/seaice/growth.F, which change results of
896      lab_sea experiment: fixes pertain to melting snow over open water, to
897      masking EVAP under sea ice, and to using the correct AREA variable for
898      computations of EVAP, PRECIP, HSNOW, and GHEFF
899    o add ability to read bathy, salt, and theta using MNC (off by def)
900    o add flooding algorithm and advection of HSNOW for pkg/seaice;
901      both are turned off by default and do no change any results
902    o seaice advection with pkg/thsice: a step toward the use of non-linear
903      advection scheme, but #ifdef or commented out for now (requires more EXCH).
904    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
905      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
906      in natl_box (affects results @ truncation level: update output.txt)
907    o multi-threading and IO:
908      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
909      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
910        (needed to work with SingleCpuIO): tested in all verif. exp.
911    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
912      affects the results (but none of the verification test uses this scheme).
913    o Adding some pkg/diagnostics capability to pkg/seaice
914      (will certainly be subject to changes)
915    o ctrl: adding new control variables:
916      lwflux, lwdown, evap, snowprecip, apressure, runoff
917    
918    checkpoint58q_post
919    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
920      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
921      high_res_cube configuration by 4% on Columbia.
922    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
923      add (in global_with_exf/code) a version of EXF_INTERP_READ without
924      dynamical allocation (seems to work in multi-threaded).
925    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
926      single CPU io) so that TAF does not have to see EESUPPORT.h
927    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
928    
929    checkpoint58p_post
930    o obcs: stop if obcs is used with useCDscheme = .true.
931    o shelfice:
932     - fix a sign error so that no slip at shelfice interface works
933     - remove stop for combination non-hydrostatic code and shelfice. That does
934       not mean, that the results are correct, but at least they are numerically
935       stable
936    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
937    o added adjoint exch routined for all exch*3d* routines
938      and updated flow directives
939    
940    checkpoint58o_post
941    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
942      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
943    o change controling S/R for writing pickup file (new S/R do_write_pickup)
944      and clean-up reading/writing of pickup files.
945    o fix local version of read/write pickup (NH part) in rotating_tank/code
946    o simplify EXCH interface:
947     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
948     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
949    o added the regrid package
950    o shelfice:
951     - add a simple boundary layer scheme to reduce noise
952     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
953    
954    checkpoint58n_post
955    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
956       local variable (not in common block).
957    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
958      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
959      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
960        to work with SingleCpuIO.
961    o add "_d 0" to real constant of pkg/cfc subroutines ;
962       update exp. cfc_exemple & tutorial_cfc_offline output files.
963    o multi-threading and IO:
964      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
965        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
966      - barrier before and after reading.
967      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
968      - avoid using MDS_WRITELOCAL for LAND pkg output.
969      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
970        common-block variables ; Allows multi-threading with master-thread IO.
971    o change default MAX_NO_THREADS from 32 to 4 ;
972      and stop cleanly when MAX_NO_THREADS is too small.
973    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
974    
975    checkpoint58m_post
976    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
977       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
978    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
979       keep global_ocean.90x40x15 (for AD testing) with former secondary test
980       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
981    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
982        add MITgcm_tutorials (= code + all the tutorials)
983    o ecco, option to compute cost for total ssh (mean+anom)
984    o consistent with addition of ptracer and ssh in pkg/profiles
985    o profiles: adding ptracer and ssh
986    o testreport: change multi-test output-file name
987      (from output.txt.{name} to output.{name}.txt)
988    o profiles: now ok for mutli-tiles case
989  o seaice: add 4 parameters for different advection schemes for area,  o seaice: add 4 parameters for different advection schemes for area,
990    (effective) seaice thickness, enthalphy, and snow height. Their default    (effective) seaice thickness, enthalphy, and snow height. Their default
991    is the standard parameter SEAICEadvScheme    is the standard parameter SEAICEadvScheme

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