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revision 1.805 by jmc, Tue May 1 12:29:18 2007 UTC revision 1.1040 by jmc, Mon Nov 17 23:13:41 2008 UTC
# Line 4  $Name$ Line 4  $Name$
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    o pkg/exf: add parameter for extrapolation of temp up to the surface
8       and option to prevent negative evap (in bulk_largeyeager04 only).
9    o Prather Advection scheme: fix tracer conservation for divergent flow
10      (e.g., when using NonLin Free-Surface).
11    o kpp: retire KPPmld diagnostics --> use MXLDEPTH instead
12    o gmredi (Visbeck-variable-K):
13     - add more parameters to Visbeck-variable-K.
14     - use a 5 points average for dSigmaR in Visbeck-K calculation
15       (more "homogenous": same stencil and same weights as in dSigmaH)
16     - update output of ideal_2D_oce experiment.
17    o fix CPP-flag REAL4_IS_SLOW, when _RS expands into real*4
18      (#undef REAL4_IS_SLOW)
19     - pkg/mnc/mnc_cw_cvars.F: write _RS-grid variable as netcdf-real*4
20       coordinate variable
21     - pkg/monitor/monitor.F: call mon_printstats_rs for _RS variables
22       (surface forcing fields), removes some of the functionality
23     - model/src/write_grid.F: write _RS variables as RS-netcdf variables
24     - model/src/diags_oceanic_surf_flux.F: fix a few diagnostics, but
25       probably not all: copy _RS surface flux fields to RL field before
26       calling DIAGNOSTICS_FILL
27     - model/inc/CPP_EEMACROS.h: make the _EXCH_*_RS macros expand into
28       real*4 (CALL EXCH_*_RS) versions.
29     - tested in 2 experiments: inverted_barometer & solid-body.cs-32x32x1
30       (generate new output).
31    
32    checkpoint61e
33    o gmredi (Visbeck-variable-K):
34      - fix the "OLD_VISBECK_CALC" option + move the #undef to GMREDI_OPTIONS.h
35      - change computation of Visbeck-K where Slope > Smax :        
36        now: N*min(Slope,Smax) (similar to OLD_VISBECK_CALC with gkw91 taperFct)
37        previously was: M*sqrt(min(Slope,Smax)) ; update ideal_2D_oce output.
38    o bottom-drag in P-coord.: change units of bottomDragLinear & bottomDragQuadratic
39      to be the same as with Z-coord. (i.e., m/s & no-units respectively).
40    o calc_viscosity: fix index range (was wrong for CD-Scheme & explicit Visc)
41    o pkg gmredi, linear & fm07 tapering: put an upper limit on Slope^2 so that Kwz
42      does not become too large (to avoid precision problems in implicit-diffusion
43      solver); update ideal_2D_oce output.
44    o pkg ggl90:
45      - in ggl90_cal.F: compute only one set of visc/diff, used to
46        step forward TKE/T/S/momentum
47      - default value of GGL90viscMax/GGL90diffMax larger and equal (to
48        have Prandlt =1)
49    o gmredi (fm07):
50      - add lower limit on Transition layer thickness + lower limit on 1/lambda
51      - allow to set few more params from data.gmredi
52    o pkg ggl90:
53          - add missing sqrt(2) factor in computation of mixing length
54            scale in ggl90_calc.F
55            (see Eq. (2.35) in Blanke and Delecluse, JPO, 1993)
56    
57    checkpoint61d
58    o adjoint modifs
59      - adapt to new field rhoInSitu
60      - allow to revert from StoreDynVars2D, StoreDynVars3D
61        to individual fields
62        (switches AUTODIFF_USE_OLDSTORE_2D, AUTODIFF_USE_OLDSTORE_3D)
63    o store 3-D (in-situ) density in commom block (DYNVARS.h)
64     - save 1 rho computation.
65     - no longer modify T & S inland when using down_slope pkg.
66    o gad_som : allow to switch to SOM advection for T & S without corresponding
67      pickup files (using new S/R: MDS_CHECK4FILE).
68    o keep removing _BEGIN/_END_MASTER between MDSIO S/R call
69      (for useSingleCpuIO to work in multi-threaded)
70    o pkg/shelfice:
71     - disentangle parameters: retire shelfIceFile in data/PARM05 and substitute
72       with SHELFICEtopoFile in data.shelfice
73     - move code for reading ice shelf topography and modifying hFacC into separate
74       subroutines of the shelfice package
75     - separate initialisation of "fixed" and "variable" variables
76     - kTopC is not (yet) replaced by kSurfC, although this is possible
77    o fix broken diagnostic SIatmFW and changed the units from m/s to kg/m^2/s
78    o add initialisation of deepFac if using Pcoords (new S/R set_grid_factors)
79      and rename:
80      ini_phiref.F          --> set_ref_state.F  (+ set anelastic factors)
81      ini_reference_state.F --> load_ref_files.F (- set anelastic factors)
82    o change FIND_RHO_SCALAR : return rho (instead of rho - rhoConst)
83    
84    checkpoint61c
85    o add option ALLOW_ADDFLUID and run-time selector "selectAddFluid"
86      to add mass source/sink of fluid in the interior (3-D generalisation
87      of oceanic real-fresh water flux).
88    o pkg/monitor: fix recip_dr argument in mon_advcflw2 call (-> advcfl_W_hf_max)
89    o vermix test experiment: switch from LINEAR EOS to MDJWF (not tested before)
90    o new pkg: down_slope
91      density-driven downsloping flow parameterisation (Tellus, 1999, 412-430).
92      - presently, modify T & S inland (dwnslp_calc_rho.F).
93        can be avoided if rho was stored in common bloc and used in calc_phi_hyd.
94      - implementation for ocean in P-coords not tested.
95      - add secondary test to global_ocean.90x40x15 (input.dwnslp) to check this pkg.
96    o move kSurfC,kSurfW & kSurfS from SURFACE.h to GRID.h (next to kLowC)
97      (to facilitate conversion of oceanic pkg to p-coordinate).
98    o change FIND_RHO to FIND_RHO_2D :
99      pass arguments tFld & sFld as local (tile) 2D-arrays ; +fix EOS_CHECK.
100    o new pkg: cheapaml
101    
102    checkpoint61b
103    o exch2:
104      change index bounds in rx2_cube exchanges (new S/R: EXCH2_GET_UV_BOUNDS)
105      - no longer depend on the order sequence (N,S,E,W).
106      - 3rd exchange no longer needed (tested with 24 tiles).
107      - same modif to hand-written adjoint S/R (global_ocean.cs32x15: zero diff)
108      - exch_UV_A-grid readily available (but not yet tested).
109      comment out 3rd exch call and remove copy of V to U at SE & NE face-corners
110      (both are no longer needed) in exch_uv: no effect in forward run; but
111       get truncation error differences with adjoint exch.
112    o exch2:
113     - change index-bounds storage (moved from target to local tile,
114       more intuitive this way) ; rename/remove some variables.
115     - change utils/exch2/matlab-topology-generator & code_mods accordingly.
116    
117    checkpoint61a
118    o exch2/matlab-topology-generator:
119      fix bug in index bounds for N-S internal exchange (hard to tell if this
120      had any effect on the solution).
121    o pkg/mnc: small fix in mnc_handle_err: make sure that length of msgbuf
122      is exceeded
123    o testreport: modify syntax of awk, so that it works also with
124      awk, and not only with nawk and gawk
125    
126    checkpoint61
127    o autodiff
128      Change default for TAF usage by removing argument '-nonew_arg'
129      This changes TAF subroutine argument list (ordering of active var.)
130      Omission of this flag leads to incompatibility w.r.t. TAMC
131      To restore TAMC-compatibility, need following modifs:
132      * use adoptfile tools/adjoint_options/adjoint_tamc_compatibility
133      * use CPP option #define AUTODIFF_TAMC_COMPATIBILITY
134      Tested TAF version is 1.9.22
135      N.B.: exch2 hand-written adjoint code currently not TAMC compatible
136    
137    checkpoint60
138    --->>> This is the last checkpoint for which generating the adjoint
139    --->>> is done via the TAMC-compatibility TAF-flag "-nonewarg"
140    --->>> by default.
141    --->>> Future checkpoints will ommit this flag by default.
142    o pkg/generic_advdiff, os7mp: simplify and avoid division by zero.
143    o pkg/grdchk: Add gradient check to etan0 perturbations.
144    o pkg/exf: read ice area from file (#ifdef ALLOW_ICE_AREAMASK).
145    o pkg/autodiff: more flexibility in zeroadj.
146      model/src: modifying do_oceanic_phys.F accordingly.
147    o pkg/ctrl: Bounds for (kapgm,kapredi,eddypsi) parameter estimation.
148    o model/src and pkg/gmredi: GMREDI_WITH_STABLE_ADJOINT CPP option
149      special setup of gmredi for which the adjoint is stable
150      enough for parameter optimization.
151    o bridging the gap between eddy stress and GM.
152      -> eddyTau is replaced with eddyPsi (eddyTau = f x rho0 x eddyPsi)
153          along with a change in CPP option (now ALLOW_EDDYPSI).
154      -> when using GM w/ GM_AdvForm:
155          The total eddy streamfunction (Psi = eddyPsi + K x Slope)
156          is applied either in the tracer Eq. or in momentum Eq.
157          depending on data.gmredi (intro. GM_InMomAsStress).
158      -> ALLOW_EDDYPSI_CONTROL for estimation purpose.
159      The key modifications are in model/src/taueddy_external_forcing.F
160      pkg/gmredi/gmredi_calc_*F pkg/gmredi/gmredi_*transport.F
161    
162    checkpoint59r
163    o new S/R (pkg/mdsio/mdsio_facef_read.F) reading of sNx+1 x sNy+1 array
164      from per-face file (take S/R READSYMTILE_RS out of ini_curvilinear_grid.F);
165      fix option to read coriolis(@ cell-corner) from files with CS-grid.
166    o pkg/mnc: add some attributes to standard 1D-coordinate variables
167    o pkg/diagnostics: enforce missing_value attribute for scalar variables at
168      mass points, when using mnc for output
169      - add runtime parameter (missing_value, missing_value_int) to override
170        default (which is the value of getcon('UNDEF'))
171    o pkg/mnc: prepare mnc for the actual use of missing values with the
172      diagnostics package: small fix in mnc_cw_readwrite.template and more
173      initialisation of never used fields
174      - replace mnc_common.h and mnc_id_header.h with corresponding upper case
175      versions
176    o pkg/thsice/thsice_ini_vars.F added default initial values so that
177      thermodynamics sea ice solver does not blow up when some initial fields
178      are missing.
179    o move from external_forcing_surf.F to ini_forcing.F
180      the p-coord. hack consisting in using pLoad to set phi0surf ;
181      update output of tutorial_global_oce_in_p (affected @ truncation level).
182    o Freshen up a bit hs94.1x64x5, notably:
183      remove rotationPeriod and tRef=5*0. (adjoint only), and add
184      exactConserv=.TRUE.
185    o pkg/generic_advdiff:
186      change option GAD_ALLOW_SOM_ADVECT to GAD_ALLOW_TS_SOM_ADV which only
187      applies to files where Temperature & Salinity 2nd Order moments are used.
188    o pkg/ptracers: add second-order moment advection schemes (80 and 81);
189      this uses a dynamically allocated internal state data structure
190      (#define PTRACERS_ALLOW_DYN_STATE in PTRACERS_OPTIONS.h)
191      and requires a fortran 90 compiler
192    
193    checkpoint59q
194    o pkg/mom_vecinv: Add energy & enstrophy conserving scheme (selectVortScheme=3)
195       (from Sadourny, described by Burridge & Haseler, ECMWF Rep.4, 1977)
196    o Refresh tutorial_global_oce_biogeo, notably:
197      - change bathymetry (put back seamounts in ACC, use hFacs)
198      - change EOS (POLY3 --> JMD95Z)
199      - use Bryan-Lewis vertical diffusivity
200      - use multidimensional advection
201      - remove old virtual virtual in dic pkg, now done through ptracer pkg
202      - change a couple of parameters in dic pkg
203    o pkg/ctrl: change formula in adctrl_bound.F and add a parameter to ctrl_map_ini_gen.F
204    o pkg/obcs: change default to OBCSfixTopo = .true.,
205      - set OBCSfixTopo=.false. in exp4/input/data.obcs to reproduce old result
206      - replace "debugMode" with "debugLevel .GE. debLevB"
207    o implementation of TAF directives for gchem,cfc,dic
208    o remove "exp5" (replaced by tutorial_deep_convection).
209    o pkg/obcs: add code to fix topography gradients normal to open boundaries;
210      this requires computing the index fields OB_Jn/Js/Ie/Iw in obcs_readparms;
211      the code can be turned on by setting OBCSfixTopo = .true. in data.obcs
212      --> changes results in exp4, seaice_obcs
213    o tutorial_deep_convection :
214      update the set-up and increase resolution and domain size ; start
215      from pseudo initial conditions = output at t=120mn in order to see
216      something happening when running testreport.
217    o pkg/seaice: add os7mp as an advection scheme
218                  add check for advection schemes
219                  add a flag for restoring T and S underneath sea ice
220    o pkg/my82: add netcdf-support and diagnostics
221    o thsice pkg:
222      - Now hsMax limits snow height by turning it into ice following
223        flooding scheme (and now conserving energy)
224      - Slight rewriting of the formula in thsice_calc_thick.F
225      - Parameter rhowi eliminated to be replaced by floodFac = (rhosw-rhoi)/rhos
226      --> changes results of global_ocean.cs32x15.icedyn and global_ocean.cs32x15.thsice
227    
228    checkpoint59p
229    o gchem / dic / cfc :
230      - add useDIC, useCFC , read from "data.gchem" (& hold in GCHEM.h);
231      - add new parameter files: "data.dic" & "data.cfc" ;
232      - various re-arrangement in initialisation & header file ;
233      - fix tutorial_global_oce_biogeo for multi-threaded test.
234    o pkg/dic: test for "pickup_dic" file when restarting ;
235      if no pickup-file, can restart with a re-initialised pH (same as it did
236      before) providing pickupStrictlyMatch is set to False.
237    o change argument list of S/R PTRACERS_WRITE_PICKUP & MYPACKAGE_WRITE_PICKUP
238      + fix call to S/R GGL90_WRITE_PICKUP & DIC_WRITE_PICKUP
239    o add a "warning" (to Error msg file) when an Active Tracer is not using AB-2
240      and staggerTimeStep is off (needed for stability of Internal-wave dynamics).
241    o move out of PARAMS.h & data the last pieces of old-ptracer code: tauTr1ClimRelax,
242     & lambdaTr1ClimRelax ; put those 2 params in PTRACERS_PARAMS.h & data.ptracers
243       (note: not clear to me what lambdaTr1ClimRelax is still used for ...)
244    o pkg/mom_vecinv: - new parameter "selectVortScheme" to select which
245       scheme to use for vorticty-term ;
246     - compute upwindVorticity=T case within mom_vi_u/v_coriolis_c4.F
247       (with default selectVortScheme, return to original discretisation)
248     - remove weird combination (e.g.: upwindVorticity & highOrderVorticity)
249    o pkg/seaice: add a line to the summary to indicate grid type (B/C)
250    o in mom_calc_visc, fix average value of viscAh_W & viscA4_W next to the
251      bottom ; only used with variable horizontal viscosity and non-hydrostatic.
252      also fix diagnostics VISCAHW & VISCA4W.
253    
254    checkpoint59o
255    o dome/code/obcs_calc.F: avoid division by zero (detected using gfortran).
256    o change the loop ordering in most gad_*_adv_x.F to improve vectorization:
257      move a few statemens out the main loop into separate loops
258    o pkg/shelfice:
259      - sort out freshwater flux; convert freshwater fluxes to mass fluxes
260        (kg/m^2/s), does not break tests, because in verification/isomip,
261        rhoConstFresh=rhoConst (by accident)
262      - rearrange computation of tLoc, sLoc, pLoc to make code more efficient
263      - move S/R find_rho_scalar, pkg/ecco/sw_ptmp.F, pkg/ecco/sw_adtg.F into
264        new file model/src/seawater.F, so that they are available for all pkgs.
265      - convert potential temperature into in-situ temperature. This changes the
266        isomip tests => update tests
267    o add a flag writePickupAtEnd (default=true) to be able to suppress
268      writing a pickup at the last timestep
269    o tools/mpack-1.6 :
270      - disable automake (not working) and autoconf (not needed).
271      - update to version 1.6.4 which fix MD5 code on some 64 bits platforms
272        also cleaner with much less compilation warnings.
273    o pkg/profiles:
274      rename profiles_interp_mean_genericgrid as profiles_interp_mean_gg
275      (for "less than 32 characters name" compiler requirement)
276    o pkg/obcs and pkg/exf: added capability to specify seaice open boundary
277      conditions that have a different sampling frequency than S/T/U/V obcs
278    o pkg/diagnostics (stats-diags):
279      - fix global Min/Max in case 1 processor get only empty tiles
280    o genmake2: replace (4 times)
281         make genmake_tc_1.o >> genmake_warnings 2>&1
282      with
283         COMM="$CC $CFLAGS -c genmake_tc_1.c"
284         echo $COMM >> genmake_warnings
285         $COMM >> genmake_warnings 2>&1
286      to make genmake2 always see the value of CC as specified in the optfile.
287    o generic_advdiff: - prather advection scheme (SOM) coded for CS-grid.
288      - add diagnostics for 1srt & 2nd Order moments and sub-grid variance.
289      - modify verification advect_cs test to test SOM-advection on CS-grid.
290    o pkg/ctrl:
291      - Rewrite of ctrl_map_ini_ecco.F,
292        introducing a generic routine (ctrl_map_ini_gen.F).
293      - Modification of ctrl_bound/adctrl_bound handling control vector bounds.
294    
295    checkpoint59n
296    o pkg/diagnostics: for large number of diagnostics, store diagnostic mate
297      number in dedicate array "hdiag":
298      - new version of S/R DIAGNOSTICS_ADD2LIST : DIAGNOSTICS_ADDTOLIST
299        with 1 more argument (mate number); modify old version DIAGNOSTICS_ADD2LIST.
300      - many small changes (integer format) for large number of diagnostics
301      - start to use DIAGNOSTICS_ADDTOLIST (necessary for diagnostics with
302        a counter mate) in pkg diagnostics, ptracers, thsice & aim_v23.
303    o add parameter rotateGrid and Euler angles EulerPhi/Theta/Psi. For
304      usingSphericalGrid, this allows to define the rotated grid coordinates
305      via phiMin/thetaMin/dxSpacing/dySpacing, etc., but then re-compute the
306      geographical coordinates according to the inverse of the rotation defined
307      by the Euler angles, so that Coriolis parameter and online-interpolation by
308      exf works with the geographical coordinates on XC/YC/XG/YG.
309      Naturally, this feature does not work with all packages, so some
310      combinations are prohibited in config_summary (flt, flt_zonal, ecco,
311      profiles), because there the coordinates are assumed to be regular
312      spherical grid coordinates.
313    o pkg/gmredi,ctrl,ecco,autodiff,grdchk and model/src,inc:
314      - introduce isopycnal diffusion coefficient control.
315    o tools/adjoint_options:
316      - additional control vector components.
317    o pkg/mnc: have mnc create marginally meaning full coordinate variables
318      (that is the grid indices) if usingCurvilinearGrid and NOT EXCH2
319    o pkg/mypackage:
320      - add example of read/write pickup for state-var ;
321      - add entry points to the main code for state-vars diags & write-pickup.
322    o pkg/exf: rewrite of exf_getffieldrec.F to properly deal with year
323      transitions for useExfYearlyFields
324      - add new subroutine that determines the file to read from for
325        use*YearlyFields = .TRUE. and .FALSE.
326      - add a verification experiment to global_with_exf that tests
327        useExfYearlyFields with USE_EXF_INTERPOLATION defined
328    o pkg/obcs/exf: add useOBCSYearlyFields (=.FALSE.) to obcs with exf in
329      analogy to useExfYearlyFields; rearrange obcs_prescribe_read: two new
330      subroutines (which could be generated from a template, because they are
331      almost identical), for now they are included in obcs_prescribe_read.F for
332      simplicity
333    o pkg/exf:
334      - add a little more diagnostic to exf_interp_read (in analogy to
335        mds_read_field, can be turned off with debugLevel < debugLevA=1)
336      - improve vectorizability of exf_interp for TARGET_NEC_SX, makes code
337        ugly but fast by unrolling short inner loops, inserting a unroll=8
338        directive in routine lagran, and splitting a loop and making do while the
339        outermost loop (the latter requires the intoduction of index arrays)
340    o pkg/obcs: replace obcs_apply_area/heff/hsalt/hsnow with obcs_apply_seaice
341    o pkg/seaice: moved DIFFERENT_MULTIPLE from seaice_model to seaice_dynsolver
342      http://forge.csail.mit.edu/pipermail/mitgcm-devel/2008-January/003173.html
343    o verification/seaice_obcs: updated for restart test and latest options
344    o pkg/seaice: add a new flag SEAICEuseTEM to use a slightly different
345      ice rheology (so-called truncated ellipse, that gets rid of tensile stress);
346      for now this is only available for the C-grid code and also within
347      #ifdef SEAICE_ALLOW_TEM, because this option may slow down the EVP code
348    
349    checkpoint59m
350    o pkg/seaice: use different time constant for melting (SEAICE_gamma_t)
351      and freezing (SEAICE_gamma_t_frz) ice due to mixed layer temperature
352    o gad_som : fix flux output (& diagnostics) to have same units as other  
353      advection scheme fluxes (was previously multiplied by deltaT).  
354    o added verification/seaice_obcs both to test seaice open boundaries
355      and to provide an example matlab scrpt for generating them
356    o added verification/lab_sea/input.salt_plume for testing pkg/salt_plume
357    o pkg/salt_plume: clean up salt_plume_frac.F to
358      remove redundancy in PlumeMethod 1 and 4
359    o pkg/kpp: added saltplume diagnostics
360    o pkg/obcs and pkg/seaice:
361      - do not set uice and vice to zero when OB*icefile are unspecified
362      - OBCS_SEAICE_AVOID_CONVERGENCE is undefined by default
363      - moved seaice tracer obcs after call to seaice_growth
364    o pkg/salt_plume: added various options for salt plume depth
365      criterion and for vertical distribution of the salt
366    
367    checkpoint59l
368    o pkg/ptracers: new version of ptracers pickup:
369      read meta file and write only fields which are needed to restart.
370      ( same logic as main pickup file ; also using pickupStrictlyMatch )
371    o pkg/seaice:
372      - add timescale for melting due to warm mixed layer as a means of
373        setting SEAICE_availHeatFrac more conveniently
374      - add a CPP-flag/runtime parameter check for flooding algorithm
375      - reformulated availHeat in seaice_growth.F to be independent of AREA
376    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
377      unit changes
378    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
379    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
380      SX vector computer.
381    o pkg/seaice:
382      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
383        seaice forcing fields can now be read only through pkg/exf
384      - removed some unused halos
385    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
386    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
387      or U/VICE from U/VWIND before computing U/VSTRESS
388    
389    checkpoint59k
390    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
391      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
392    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
393      all experiments pass when compile with un-initialised var. checking option.
394    o added pkg/salt_plume
395    o script to test restart (for now, in MITgcm_contrib/jmc_script)
396    o pkg/seaice: new read/write pickup version.
397      read meta file and write only fields which are needed to restart.
398      ( same logic as main pickup file ; also using pickupStrictlyMatch )
399    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
400    o lab_sea.hb87: modify the domain & update output.hb87.txt :
401      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
402      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
403      process. Fixed here by closing the domain at the Northern boundary.
404    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
405    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
406      a set of consecutive levels in/from a 3-D array.
407    o pkg/ptracers:
408      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
409      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
410    
411    checkpoint59j
412    o in pkgs: dic, obcs, offline, rbcs:
413      standard way to compute coeff. for time interpolation between 2 time reccords
414      which retains full precision (& make results less dependent on compiler).
415      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
416    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
417      packages instead of reading ice cover and wind speed separately
418    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
419     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
420      to allow to compile customized code before the update)
421    o cleaning-up:
422      - fix CPP instruction syntax in pkg/obcs
423      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
424        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
425      - fix some threads issue in IO parts.
426    o pkg/dic:
427      - add tons of "_d 0" (--> much better testreports !)
428       and then update outputs of tutorial_global_oce_biogeo
429    o pkg/mom_fluxform:
430      add a special version of momentum advection intended to conserve momentum
431      next to a bathymetry step or a coastline edge. (default = off = #undef)
432    o new read/write pickup version:
433      - for now, only implemented for main (mdsio) pickup file.
434      - write out only what is needed to restart; merge pickup_nh , pickup_ph
435        and main pickup together.
436      - read meta file; read only what is needed to restart; stop if a field
437        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
438        if it make sense (even if the restart is not perfect).
439      - if no meta file, assume that pickup to read corresponds exactly to
440        a pickup that would currently be written.
441      - read pickup written in the old format (until checkpoint59i) if it
442        recognizes an old meta file (no field-list).
443      - add a meta file in exp. which starts from a pickup: 2 cases:
444        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
445         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
446        b) a meta file describing the content of the associated pickup file
447         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
448    o pkg/mdsio & pkg/rw:
449      - new routine to read a meta file ; new set of routine to read
450        Multiple-fields file (with meta file).
451    o added open boundary conditions capability for seaice
452        HSNOW, HSALT, UICE, and VICE
453    
454    checkpoint59i
455    o adjoint:
456      * fix multiDimAdvection adjoint
457        (partial recomputation problem by TAF for fVerT(:,:,kDown)
458        and comlev1 size definition (maxpass vs. max. number of tracers)
459      * verification/global_ocean.90x45x15 adjoint now tests
460        NLFS and multiDimAdvection using DST3 (=30)
461      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
462    o pkg/kpp: add "_d 0" to real constant (if missing);
463      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
464      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
465    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
466      for internal parameters related to restart process (formerly from PARAMS.h)
467      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
468    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
469      as argument. (only atm2d & obcs write_pickup have not yet been updated)
470    o pkg/monitor:
471      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
472      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
473      - account for deep Atmosphere factor and density factor (anelastic)
474    o added open boundary conditions capability for seaice HEFF and AREA
475    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
476      thermodynamics
477      - requires a little reorganization, which affects the testreport results
478        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
479        so that now the conservative form is tested
480      - add a few comments
481    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
482    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
483    o add new diagnostics to seaice: advective, diffusive fluxes (only for
484      multidim-advection, for scheme 2 they are not filled) and transports,
485      thermodynamic growth rates
486    o change units of EmPmR (inside the code, + within coupling interface)
487      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
488      Affects results @ truncation level (cg2d match) and update output of
489       experiments: lab_sea(6), global_ocean.90x40x15(10),
490      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
491      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
492      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
493      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
494    
495    checkpoint59h
496    o pkg/exf:
497      - improve vectorization by moving if-statement out of loops in
498        exf_mapfields, exf_radiation
499      - exf_bulkformulae.F: introduce 2D fields and vectorize code
500    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
501    o testreport:
502      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
503        monitor & update offline_exf_seaice exp. output.
504      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
505    o pkg/seaice:
506      - bug fix in the evp solver: boundary conditions were affected be
507        masking of zMax/zMin (changes results)
508      - minor bug fix in boundary conditions in seaice_calc_strainrates
509        (changes results for no_slip)
510      - seaice_lsr.F: make interpolation of eta dependent on boundaries
511      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
512      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
513        stress formulation and no-slip boundary conditions
514    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
515      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
516    o pkg/seaice: a first HSALT time stepping equation has been checked in
517    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
518      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
519      without requiring DO-IF statements
520    o pkg/thsice:
521      use continuous power-law function for partition of energy between lateral
522      melting/freezing and thinning/thickening ; old code using step function
523      still available with #undef THSICE_FRACEN_POWERLAW
524      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
525    o testreport: change AD testing : check against results/output_adm.txt
526      using same scripts as for forward test.
527    
528    checkpoint59g
529    o adjoint testing: in preparation for changing testreport:
530      - output format: cost and grad written on separated lines
531      - ad output results in directory "results" (instead of "results_ad")
532    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
533    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
534    o pkg/ecco: allow user defined cost function contributions
535    o testreport:
536      Allow to choose (per experiment) the list of tested output variables
537       and the main variable (used to issue a pass/FAIL ) ;
538      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
539      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
540      Also modify printing of summary:
541       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
542       b) echo the list of tested variables in the individual summary.txt of
543          each experiment.
544    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
545      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
546      (but still depend on the tile decompostion of the domain).
547    o pkg/seaice: change a discretization detail to make the B-grid code
548      "more symmetric". This change is likely to remove all "ridges/leads" that
549      where quasi-aligned with the grid in B-grid solutions. It may also be
550      the solution to the stress coupling issues with the B-grid.
551    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
552      remove .cvsignore from input dir. (since testreport no longer run here).
553    o pkg/thsice:
554     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
555     - fix reshaping of sea-ice just after advection:
556       melt all the ice only if ice-volume is too small.
557     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
558       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
559     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
560    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
561      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
562    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
563      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
564      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
565      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
566      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
567      -> update output.txt
568    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
569     this affects truncation error: -> update output.txt of exp:
570      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
571      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
572    
573    checkpoint59f
574    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
575    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
576      a bounded range (in forward mode)
577    o pkg/ecco, ctrl, autodiff and mom_common:
578     internal parameter controls, completements of implementations
579    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
580    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
581      (not seem any difference in testing results).
582    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
583       at face corners.
584    o pkg/generic_advdiff:
585     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
586      loop range indices for computing vertical advection tendency
587      and do the calculation in the interior only (no overlap) ;
588      for now, only implemented for SOM advection (to save CPU time).
589     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
590    o exch2 adjoint
591      First set of changes:
592      - add exch2 hand-written adjoint templates
593      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
594        This will require cleanup in pkg/autodiff/*.F
595        (changed routines currently kept separate in verif. code/)
596      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
597        that used to hide exch2 or cubed-sphere specific code
598        (commented via 'cph-exch2')
599    o pkg/seaice
600      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
601    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
602       output of global_ocean.cs32x15.thsice .
603    
604    checkpoint59e
605    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
606      for B-grid vector (not yet tested) and C-grid vector (<- only used
607      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
608    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
609      (#ifdef ALLOW_SALT_PLUME)
610    o gather_2d/scatter_2d: removed halo regions
611    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
612      scheme and the corresponding test case (under front_relax dir). For now,
613      only available with Skew-flux form and not yet tested in realistic set-up.
614      adjoint: store directives updated, but gradient checks deteriorated,
615      so maybe GM/Redi adjoint is now broken.
616    o seaice adjoint
617      * add AREA, HEFF, HSNOW as control variable
618        (should not change lab_sea results)
619      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
620    o pkg/seaice:
621      * added computation of saltFlux in seaice_growth;
622        For time being, sea ice salinity is assumed constant
623        contribution of snow flooding to freshening of sea ice is neglected.
624        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
625        defaults to 0.0 in order to maintain backward compatibility.
626        Typical values for SEAICE_salinity are 4 to 10 g/kg.
627      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
628      * added SEAICE_availHeatFrac, which specifies fraction of surface level
629        heat content used to melt or grow ice
630      * commented out cap of HICE: it helps keep ice thinner
631      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
632      * applied OBCS T/S mask to HEFFM sea ice mask
633    
634    checkpoint59d
635    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
636     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
637     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
638    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
639     and change default value of parameter "GM_Small_Number";
640     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
641       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
642       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
643    o pkg/ecco: cost function when applying pkg/smooth to controls
644    o pkg/ctrl: add forcingPrecond run time parameter
645    o pkg/seaice:
646     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
647     - fix bug in metric terms of u-equation in LSR solver (implicit part),
648       changes verification/lab_sea
649     - rearrange implicit part of u-equation in LSR solver to make it easier to
650       read, understand, and debug. This causes changes at the truncation level.
651     - fix (serious) bug in the boundary conditions (sign error in the implicit
652       part) of the LSR solver. Changes all LSR results.
653     - fixed problem with HSNOW initialization to avoid thick snow when AREA
654       is initilized with small values - does not change lab_sea results.
655     - added HsnowFile initialization capability
656    o pkg/smooth: addition to model/src and pkg/ctrl so allow
657     initialization of pkg/smooth and application to control vector
658    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
659    o dependencies: pkg/profiles requires pkg/cal
660    o pkg/profiles:
661     - added option ALLOW_PROFILES_GENERICGRID
662         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
663         that interpolation information (grid points and coefficients) is provided
664         within the netcdf input files.
665         -> sample matlab scripts can be found in MITgcm_contrib/gael
666         that allow you to prepare netcdf input files.
667     - also modified: cleaner include statements, cleaner error print statements,
668       cleaner stops when error, and more tests of the netcdf input files consistency.
669    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
670    o pkg/seaice:
671     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
672       requires a new routine: seaice_diagnostics_fill.F
673     - make sure that seaice does not move if not forced (pressure replacement
674       method, Hibler and Ip, 1995), changes results
675     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
676     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
677       It is turned off by default (=-1.), because it changes the results.
678     - make it possible to read AREA from a file, too.
679    
680    checkpoint59c
681    o add S/R and diagnostics for oceanic mixed-layer depth
682    o move GMRedi call after all vertical mixing schemes (including KPP)
683    o pkg/thsice:
684     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
685      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
686    o pkg/obcs:
687     - bug fix for balance code
688    o pkg/seaice:
689      - allow values of SEAICE_elasticParm > 1
690      - add new parameter SEAICE_evpTauRelax as an alternative
691        to SEAICE_elasticParm
692      - make lsr boundary conditions free slip (by default), changes result
693      - add code for no slip boundary conditions for lsr
694      - set minimum of zeta to zero (and not 4e8) (changes results)
695      - add a cap on AREA after advecting AREA if seaice_growth is not called
696    o change calculation of Visbeck K:
697      - no longer depend on tapering scheme; instead, compute slope (limited
698        by GM_maxSlope). this is equivalent to what was comuted before with
699        clipping or linear tappering.
700      - fix vertical averaging (wrong by 1/2 level)
701      - leave the old version (but will not be maintained) within
702        #ifdef OLD_VISBECK_CALC / #endif
703      - update output of exp. ideal_2D_oce
704    o change error catch in calc_r_star to improve vectorization
705    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
706      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
707    o adjoint:
708      Re-organized adjoint checkpointing according to Matt Mazloff
709      (but with modifs/completions/cleanups)
710      Storing is now bundled into large arrays to optimized I/O
711      (and second step in cleanup of the_main_loop)
712    
713    checkpoint59b
714    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
715      - export/import (between ocean & coupler) fields needed for ocean DIC.
716    o pkg/seaice:
717      - get rid of three more exchanges seaice_calc_viscosities (required
718        different loop boundaries in seaice_lsr and seaice_ocean_stress)
719      - bug fix in seaice_ocean_stress (update of lab_sea required)
720      - reduce loop boundaries to necessary minimum also in seaice_evp
721      - go back to the old way of computing deltaC/Z as the adjoint likes that
722        better
723    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
724      passive tracer to an Age Tracer) + update output.txt
725    o pkg/exf:
726      - implement A-grid / C-grid selection for wind-stress input files.
727      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
728      for now, in exf_bulk_largeyeager04.F only :
729      - change implementation for case where windspeed + 2. components wind-stress
730        are read-in. AND use rhoConstFresh to convert evap.
731    o pkg/seaice:
732      - use correct EXCH_UV for wind-forcing (on A-grid).
733      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
734        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
735    o pkg/exf:
736      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
737      EXF_INTERPOLATION:
738      - merge global_with_exf/code version of exf_interp_read.F
739        to the main code ;
740      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
741        reading the file ; Important: This options needs to be defined to recover
742        previous code.
743        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
744      - no longer loose real*8 precision along the way when using exf_iprec=64.
745    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
746      - change discretisation of evp-solver in order to avoid another exchange
747        (changes lab_sea) and clean up a little
748      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
749        help the adjoint (this also changes the results slightly)
750      - add a few "_d 0" where they had been missing in seaice_evp.F
751      - cleaning up: remove unused seaice_calc_rhs.F
752    o pkg/exf: some cleaning-up:
753      - change various "constants" into runtime parameters
754      - cleaned-up Large&Yeager04 routine which should eventually
755        replace exf_bulkformulae.F (changed names of S/R and CPP)
756        and merged various ALLOW_ATM_WIND options
757     only used with thsice pkg (in thsice_get_exf.F):
758      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
759        which are used when useStabilityFct_overIce=TRUE (= the default)
760      - change default values of ice & snow emissivity and scale downward LW
761        by ice & snow emissivity.
762    o pkg/thsice:
763     fix few little problems, in thsice_calc_thickn.F:
764      - growth vertically (and not laterally) if iceFrac == iceMaskMax
765      - melt only laterally if hIce < hThinIce (as the comments say)
766      and in thsice_extend.F:
767      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
768      - start to form ice as soon as the minimum ice-volume is reachable.
769     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
770      and cpl_aim+ocn
771    o pkg/kpp
772     - move computation of surface related input fields to KPP into a new
773       subroutine kpp_forcing_surf.F
774     - remove wrong (within bi,bj loops) EXCH calls.
775     - little cleaning (add argument myThid in last position, cvs header ...)
776     - for now, fix conservation problem by exchanging KPPviscAz (may not
777       be the best fix)
778    o pkg/seaice
779     - check for inconsistent evp parameter/cpp-flag combination
780     - remove leftover errIO flat for obsolete name list error handling
781    o OpenAD
782     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
783    
784  checkpoint59a  checkpoint59a
785  o pkg/seaice: some parameter clarifications and a little bit of clean up  o pkg/seaice: some parameter clarifications and a little bit of clean up
786  o pkg/thsice: rename run-time parameters:  o pkg/thsice: rename run-time parameters:
# Line 22  o in FFIELDS.h: Line 799  o in FFIELDS.h:
799       ATMOSPHERIC_LOADING is #define).       ATMOSPHERIC_LOADING is #define).
800  o pkg/kpp: replaced _KPP_RL with _RL  o pkg/kpp: replaced _KPP_RL with _RL
801  o bug fixes for vertical diffusivity computations when both KPP and  o bug fixes for vertical diffusivity computations when both KPP and
802      3D diffusivity arrays are used.      3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
803        are no longer updating the vertical diffusivity array
804        (passed as argument) but are (re-) setting those arrays.
805  o pkg/seaice: fix bug in evp solver, while doing that  o pkg/seaice: fix bug in evp solver, while doing that
806    - change (improve?) discretization of stress computations for both    - change (improve?) discretization of stress computations for both
807      cgrid-lsr and evp solver      cgrid-lsr and evp solver

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