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revision 1.834 by jmc, Tue Jun 12 16:04:45 2007 UTC revision 1.1037 by jmc, Mon Oct 27 22:52:15 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 gmredi (Visbeck-variable-K):
8     - add more parameters to Visbeck-variable-K.
9     - use a 5 points average for dSigmaR in Visbeck-K calculation
10       (more "homogenous": same stencil and same weights as in dSigmaH)
11     - update output of ideal_2D_oce experiment.
12    o fix CPP-flag REAL4_IS_SLOW, when _RS expands into real*4
13      (#undef REAL4_IS_SLOW)
14     - pkg/mnc/mnc_cw_cvars.F: write _RS-grid variable as netcdf-real*4
15       coordinate variable
16     - pkg/monitor/monitor.F: call mon_printstats_rs for _RS variables
17       (surface forcing fields), removes some of the functionality
18     - model/src/write_grid.F: write _RS variables as RS-netcdf variables
19     - model/src/diags_oceanic_surf_flux.F: fix a few diagnostics, but
20       probably not all: copy _RS surface flux fields to RL field before
21       calling DIAGNOSTICS_FILL
22     - model/inc/CPP_EEMACROS.h: make the _EXCH_*_RS macros expand into
23       real*4 (CALL EXCH_*_RS) versions.
24     - tested in 2 experiments: inverted_barometer & solid-body.cs-32x32x1
25       (generate new output).
26    
27    checkpoint61e
28    o gmredi (Visbeck-variable-K):
29      - fix the "OLD_VISBECK_CALC" option + move the #undef to GMREDI_OPTIONS.h
30      - change computation of Visbeck-K where Slope > Smax :        
31        now: N*min(Slope,Smax) (similar to OLD_VISBECK_CALC with gkw91 taperFct)
32        previously was: M*sqrt(min(Slope,Smax)) ; update ideal_2D_oce output.
33    o bottom-drag in P-coord.: change units of bottomDragLinear & bottomDragQuadratic
34      to be the same as with Z-coord. (i.e., m/s & no-units respectively).
35    o calc_viscosity: fix index range (was wrong for CD-Scheme & explicit Visc)
36    o pkg gmredi, linear & fm07 tapering: put an upper limit on Slope^2 so that Kwz
37      does not become too large (to avoid precision problems in implicit-diffusion
38      solver); update ideal_2D_oce output.
39    o pkg ggl90:
40      - in ggl90_cal.F: compute only one set of visc/diff, used to
41        step forward TKE/T/S/momentum
42      - default value of GGL90viscMax/GGL90diffMax larger and equal (to
43        have Prandlt =1)
44    o gmredi (fm07):
45      - add lower limit on Transition layer thickness + lower limit on 1/lambda
46      - allow to set few more params from data.gmredi
47    o pkg ggl90:
48          - add missing sqrt(2) factor in computation of mixing length
49            scale in ggl90_calc.F
50            (see Eq. (2.35) in Blanke and Delecluse, JPO, 1993)
51    
52    checkpoint61d
53    o adjoint modifs
54      - adapt to new field rhoInSitu
55      - allow to revert from StoreDynVars2D, StoreDynVars3D
56        to individual fields
57        (switches AUTODIFF_USE_OLDSTORE_2D, AUTODIFF_USE_OLDSTORE_3D)
58    o store 3-D (in-situ) density in commom block (DYNVARS.h)
59     - save 1 rho computation.
60     - no longer modify T & S inland when using down_slope pkg.
61    o gad_som : allow to switch to SOM advection for T & S without corresponding
62      pickup files (using new S/R: MDS_CHECK4FILE).
63    o keep removing _BEGIN/_END_MASTER between MDSIO S/R call
64      (for useSingleCpuIO to work in multi-threaded)
65    o pkg/shelfice:
66     - disentangle parameters: retire shelfIceFile in data/PARM05 and substitute
67       with SHELFICEtopoFile in data.shelfice
68     - move code for reading ice shelf topography and modifying hFacC into separate
69       subroutines of the shelfice package
70     - separate initialisation of "fixed" and "variable" variables
71     - kTopC is not (yet) replaced by kSurfC, although this is possible
72    o fix broken diagnostic SIatmFW and changed the units from m/s to kg/m^2/s
73    o add initialisation of deepFac if using Pcoords (new S/R set_grid_factors)
74      and rename:
75      ini_phiref.F          --> set_ref_state.F  (+ set anelastic factors)
76      ini_reference_state.F --> load_ref_files.F (- set anelastic factors)
77    o change FIND_RHO_SCALAR : return rho (instead of rho - rhoConst)
78    
79    checkpoint61c
80    o add option ALLOW_ADDFLUID and run-time selector "selectAddFluid"
81      to add mass source/sink of fluid in the interior (3-D generalisation
82      of oceanic real-fresh water flux).
83    o pkg/monitor: fix recip_dr argument in mon_advcflw2 call (-> advcfl_W_hf_max)
84    o vermix test experiment: switch from LINEAR EOS to MDJWF (not tested before)
85    o new pkg: down_slope
86      density-driven downsloping flow parameterisation (Tellus, 1999, 412-430).
87      - presently, modify T & S inland (dwnslp_calc_rho.F).
88        can be avoided if rho was stored in common bloc and used in calc_phi_hyd.
89      - implementation for ocean in P-coords not tested.
90      - add secondary test to global_ocean.90x40x15 (input.dwnslp) to check this pkg.
91    o move kSurfC,kSurfW & kSurfS from SURFACE.h to GRID.h (next to kLowC)
92      (to facilitate conversion of oceanic pkg to p-coordinate).
93    o change FIND_RHO to FIND_RHO_2D :
94      pass arguments tFld & sFld as local (tile) 2D-arrays ; +fix EOS_CHECK.
95    o new pkg: cheapaml
96    
97    checkpoint61b
98    o exch2:
99      change index bounds in rx2_cube exchanges (new S/R: EXCH2_GET_UV_BOUNDS)
100      - no longer depend on the order sequence (N,S,E,W).
101      - 3rd exchange no longer needed (tested with 24 tiles).
102      - same modif to hand-written adjoint S/R (global_ocean.cs32x15: zero diff)
103      - exch_UV_A-grid readily available (but not yet tested).
104      comment out 3rd exch call and remove copy of V to U at SE & NE face-corners
105      (both are no longer needed) in exch_uv: no effect in forward run; but
106       get truncation error differences with adjoint exch.
107    o exch2:
108     - change index-bounds storage (moved from target to local tile,
109       more intuitive this way) ; rename/remove some variables.
110     - change utils/exch2/matlab-topology-generator & code_mods accordingly.
111    
112    checkpoint61a
113    o exch2/matlab-topology-generator:
114      fix bug in index bounds for N-S internal exchange (hard to tell if this
115      had any effect on the solution).
116    o pkg/mnc: small fix in mnc_handle_err: make sure that length of msgbuf
117      is exceeded
118    o testreport: modify syntax of awk, so that it works also with
119      awk, and not only with nawk and gawk
120    
121    checkpoint61
122    o autodiff
123      Change default for TAF usage by removing argument '-nonew_arg'
124      This changes TAF subroutine argument list (ordering of active var.)
125      Omission of this flag leads to incompatibility w.r.t. TAMC
126      To restore TAMC-compatibility, need following modifs:
127      * use adoptfile tools/adjoint_options/adjoint_tamc_compatibility
128      * use CPP option #define AUTODIFF_TAMC_COMPATIBILITY
129      Tested TAF version is 1.9.22
130      N.B.: exch2 hand-written adjoint code currently not TAMC compatible
131    
132    checkpoint60
133    --->>> This is the last checkpoint for which generating the adjoint
134    --->>> is done via the TAMC-compatibility TAF-flag "-nonewarg"
135    --->>> by default.
136    --->>> Future checkpoints will ommit this flag by default.
137    o pkg/generic_advdiff, os7mp: simplify and avoid division by zero.
138    o pkg/grdchk: Add gradient check to etan0 perturbations.
139    o pkg/exf: read ice area from file (#ifdef ALLOW_ICE_AREAMASK).
140    o pkg/autodiff: more flexibility in zeroadj.
141      model/src: modifying do_oceanic_phys.F accordingly.
142    o pkg/ctrl: Bounds for (kapgm,kapredi,eddypsi) parameter estimation.
143    o model/src and pkg/gmredi: GMREDI_WITH_STABLE_ADJOINT CPP option
144      special setup of gmredi for which the adjoint is stable
145      enough for parameter optimization.
146    o bridging the gap between eddy stress and GM.
147      -> eddyTau is replaced with eddyPsi (eddyTau = f x rho0 x eddyPsi)
148          along with a change in CPP option (now ALLOW_EDDYPSI).
149      -> when using GM w/ GM_AdvForm:
150          The total eddy streamfunction (Psi = eddyPsi + K x Slope)
151          is applied either in the tracer Eq. or in momentum Eq.
152          depending on data.gmredi (intro. GM_InMomAsStress).
153      -> ALLOW_EDDYPSI_CONTROL for estimation purpose.
154      The key modifications are in model/src/taueddy_external_forcing.F
155      pkg/gmredi/gmredi_calc_*F pkg/gmredi/gmredi_*transport.F
156    
157    checkpoint59r
158    o new S/R (pkg/mdsio/mdsio_facef_read.F) reading of sNx+1 x sNy+1 array
159      from per-face file (take S/R READSYMTILE_RS out of ini_curvilinear_grid.F);
160      fix option to read coriolis(@ cell-corner) from files with CS-grid.
161    o pkg/mnc: add some attributes to standard 1D-coordinate variables
162    o pkg/diagnostics: enforce missing_value attribute for scalar variables at
163      mass points, when using mnc for output
164      - add runtime parameter (missing_value, missing_value_int) to override
165        default (which is the value of getcon('UNDEF'))
166    o pkg/mnc: prepare mnc for the actual use of missing values with the
167      diagnostics package: small fix in mnc_cw_readwrite.template and more
168      initialisation of never used fields
169      - replace mnc_common.h and mnc_id_header.h with corresponding upper case
170      versions
171    o pkg/thsice/thsice_ini_vars.F added default initial values so that
172      thermodynamics sea ice solver does not blow up when some initial fields
173      are missing.
174    o move from external_forcing_surf.F to ini_forcing.F
175      the p-coord. hack consisting in using pLoad to set phi0surf ;
176      update output of tutorial_global_oce_in_p (affected @ truncation level).
177    o Freshen up a bit hs94.1x64x5, notably:
178      remove rotationPeriod and tRef=5*0. (adjoint only), and add
179      exactConserv=.TRUE.
180    o pkg/generic_advdiff:
181      change option GAD_ALLOW_SOM_ADVECT to GAD_ALLOW_TS_SOM_ADV which only
182      applies to files where Temperature & Salinity 2nd Order moments are used.
183    o pkg/ptracers: add second-order moment advection schemes (80 and 81);
184      this uses a dynamically allocated internal state data structure
185      (#define PTRACERS_ALLOW_DYN_STATE in PTRACERS_OPTIONS.h)
186      and requires a fortran 90 compiler
187    
188    checkpoint59q
189    o pkg/mom_vecinv: Add energy & enstrophy conserving scheme (selectVortScheme=3)
190       (from Sadourny, described by Burridge & Haseler, ECMWF Rep.4, 1977)
191    o Refresh tutorial_global_oce_biogeo, notably:
192      - change bathymetry (put back seamounts in ACC, use hFacs)
193      - change EOS (POLY3 --> JMD95Z)
194      - use Bryan-Lewis vertical diffusivity
195      - use multidimensional advection
196      - remove old virtual virtual in dic pkg, now done through ptracer pkg
197      - change a couple of parameters in dic pkg
198    o pkg/ctrl: change formula in adctrl_bound.F and add a parameter to ctrl_map_ini_gen.F
199    o pkg/obcs: change default to OBCSfixTopo = .true.,
200      - set OBCSfixTopo=.false. in exp4/input/data.obcs to reproduce old result
201      - replace "debugMode" with "debugLevel .GE. debLevB"
202    o implementation of TAF directives for gchem,cfc,dic
203    o remove "exp5" (replaced by tutorial_deep_convection).
204    o pkg/obcs: add code to fix topography gradients normal to open boundaries;
205      this requires computing the index fields OB_Jn/Js/Ie/Iw in obcs_readparms;
206      the code can be turned on by setting OBCSfixTopo = .true. in data.obcs
207      --> changes results in exp4, seaice_obcs
208    o tutorial_deep_convection :
209      update the set-up and increase resolution and domain size ; start
210      from pseudo initial conditions = output at t=120mn in order to see
211      something happening when running testreport.
212    o pkg/seaice: add os7mp as an advection scheme
213                  add check for advection schemes
214                  add a flag for restoring T and S underneath sea ice
215    o pkg/my82: add netcdf-support and diagnostics
216    o thsice pkg:
217      - Now hsMax limits snow height by turning it into ice following
218        flooding scheme (and now conserving energy)
219      - Slight rewriting of the formula in thsice_calc_thick.F
220      - Parameter rhowi eliminated to be replaced by floodFac = (rhosw-rhoi)/rhos
221      --> changes results of global_ocean.cs32x15.icedyn and global_ocean.cs32x15.thsice
222    
223    checkpoint59p
224    o gchem / dic / cfc :
225      - add useDIC, useCFC , read from "data.gchem" (& hold in GCHEM.h);
226      - add new parameter files: "data.dic" & "data.cfc" ;
227      - various re-arrangement in initialisation & header file ;
228      - fix tutorial_global_oce_biogeo for multi-threaded test.
229    o pkg/dic: test for "pickup_dic" file when restarting ;
230      if no pickup-file, can restart with a re-initialised pH (same as it did
231      before) providing pickupStrictlyMatch is set to False.
232    o change argument list of S/R PTRACERS_WRITE_PICKUP & MYPACKAGE_WRITE_PICKUP
233      + fix call to S/R GGL90_WRITE_PICKUP & DIC_WRITE_PICKUP
234    o add a "warning" (to Error msg file) when an Active Tracer is not using AB-2
235      and staggerTimeStep is off (needed for stability of Internal-wave dynamics).
236    o move out of PARAMS.h & data the last pieces of old-ptracer code: tauTr1ClimRelax,
237     & lambdaTr1ClimRelax ; put those 2 params in PTRACERS_PARAMS.h & data.ptracers
238       (note: not clear to me what lambdaTr1ClimRelax is still used for ...)
239    o pkg/mom_vecinv: - new parameter "selectVortScheme" to select which
240       scheme to use for vorticty-term ;
241     - compute upwindVorticity=T case within mom_vi_u/v_coriolis_c4.F
242       (with default selectVortScheme, return to original discretisation)
243     - remove weird combination (e.g.: upwindVorticity & highOrderVorticity)
244    o pkg/seaice: add a line to the summary to indicate grid type (B/C)
245    o in mom_calc_visc, fix average value of viscAh_W & viscA4_W next to the
246      bottom ; only used with variable horizontal viscosity and non-hydrostatic.
247      also fix diagnostics VISCAHW & VISCA4W.
248    
249    checkpoint59o
250    o dome/code/obcs_calc.F: avoid division by zero (detected using gfortran).
251    o change the loop ordering in most gad_*_adv_x.F to improve vectorization:
252      move a few statemens out the main loop into separate loops
253    o pkg/shelfice:
254      - sort out freshwater flux; convert freshwater fluxes to mass fluxes
255        (kg/m^2/s), does not break tests, because in verification/isomip,
256        rhoConstFresh=rhoConst (by accident)
257      - rearrange computation of tLoc, sLoc, pLoc to make code more efficient
258      - move S/R find_rho_scalar, pkg/ecco/sw_ptmp.F, pkg/ecco/sw_adtg.F into
259        new file model/src/seawater.F, so that they are available for all pkgs.
260      - convert potential temperature into in-situ temperature. This changes the
261        isomip tests => update tests
262    o add a flag writePickupAtEnd (default=true) to be able to suppress
263      writing a pickup at the last timestep
264    o tools/mpack-1.6 :
265      - disable automake (not working) and autoconf (not needed).
266      - update to version 1.6.4 which fix MD5 code on some 64 bits platforms
267        also cleaner with much less compilation warnings.
268    o pkg/profiles:
269      rename profiles_interp_mean_genericgrid as profiles_interp_mean_gg
270      (for "less than 32 characters name" compiler requirement)
271    o pkg/obcs and pkg/exf: added capability to specify seaice open boundary
272      conditions that have a different sampling frequency than S/T/U/V obcs
273    o pkg/diagnostics (stats-diags):
274      - fix global Min/Max in case 1 processor get only empty tiles
275    o genmake2: replace (4 times)
276         make genmake_tc_1.o >> genmake_warnings 2>&1
277      with
278         COMM="$CC $CFLAGS -c genmake_tc_1.c"
279         echo $COMM >> genmake_warnings
280         $COMM >> genmake_warnings 2>&1
281      to make genmake2 always see the value of CC as specified in the optfile.
282    o generic_advdiff: - prather advection scheme (SOM) coded for CS-grid.
283      - add diagnostics for 1srt & 2nd Order moments and sub-grid variance.
284      - modify verification advect_cs test to test SOM-advection on CS-grid.
285    o pkg/ctrl:
286      - Rewrite of ctrl_map_ini_ecco.F,
287        introducing a generic routine (ctrl_map_ini_gen.F).
288      - Modification of ctrl_bound/adctrl_bound handling control vector bounds.
289    
290    checkpoint59n
291    o pkg/diagnostics: for large number of diagnostics, store diagnostic mate
292      number in dedicate array "hdiag":
293      - new version of S/R DIAGNOSTICS_ADD2LIST : DIAGNOSTICS_ADDTOLIST
294        with 1 more argument (mate number); modify old version DIAGNOSTICS_ADD2LIST.
295      - many small changes (integer format) for large number of diagnostics
296      - start to use DIAGNOSTICS_ADDTOLIST (necessary for diagnostics with
297        a counter mate) in pkg diagnostics, ptracers, thsice & aim_v23.
298    o add parameter rotateGrid and Euler angles EulerPhi/Theta/Psi. For
299      usingSphericalGrid, this allows to define the rotated grid coordinates
300      via phiMin/thetaMin/dxSpacing/dySpacing, etc., but then re-compute the
301      geographical coordinates according to the inverse of the rotation defined
302      by the Euler angles, so that Coriolis parameter and online-interpolation by
303      exf works with the geographical coordinates on XC/YC/XG/YG.
304      Naturally, this feature does not work with all packages, so some
305      combinations are prohibited in config_summary (flt, flt_zonal, ecco,
306      profiles), because there the coordinates are assumed to be regular
307      spherical grid coordinates.
308    o pkg/gmredi,ctrl,ecco,autodiff,grdchk and model/src,inc:
309      - introduce isopycnal diffusion coefficient control.
310    o tools/adjoint_options:
311      - additional control vector components.
312    o pkg/mnc: have mnc create marginally meaning full coordinate variables
313      (that is the grid indices) if usingCurvilinearGrid and NOT EXCH2
314    o pkg/mypackage:
315      - add example of read/write pickup for state-var ;
316      - add entry points to the main code for state-vars diags & write-pickup.
317    o pkg/exf: rewrite of exf_getffieldrec.F to properly deal with year
318      transitions for useExfYearlyFields
319      - add new subroutine that determines the file to read from for
320        use*YearlyFields = .TRUE. and .FALSE.
321      - add a verification experiment to global_with_exf that tests
322        useExfYearlyFields with USE_EXF_INTERPOLATION defined
323    o pkg/obcs/exf: add useOBCSYearlyFields (=.FALSE.) to obcs with exf in
324      analogy to useExfYearlyFields; rearrange obcs_prescribe_read: two new
325      subroutines (which could be generated from a template, because they are
326      almost identical), for now they are included in obcs_prescribe_read.F for
327      simplicity
328    o pkg/exf:
329      - add a little more diagnostic to exf_interp_read (in analogy to
330        mds_read_field, can be turned off with debugLevel < debugLevA=1)
331      - improve vectorizability of exf_interp for TARGET_NEC_SX, makes code
332        ugly but fast by unrolling short inner loops, inserting a unroll=8
333        directive in routine lagran, and splitting a loop and making do while the
334        outermost loop (the latter requires the intoduction of index arrays)
335    o pkg/obcs: replace obcs_apply_area/heff/hsalt/hsnow with obcs_apply_seaice
336    o pkg/seaice: moved DIFFERENT_MULTIPLE from seaice_model to seaice_dynsolver
337      http://forge.csail.mit.edu/pipermail/mitgcm-devel/2008-January/003173.html
338    o verification/seaice_obcs: updated for restart test and latest options
339    o pkg/seaice: add a new flag SEAICEuseTEM to use a slightly different
340      ice rheology (so-called truncated ellipse, that gets rid of tensile stress);
341      for now this is only available for the C-grid code and also within
342      #ifdef SEAICE_ALLOW_TEM, because this option may slow down the EVP code
343    
344    checkpoint59m
345    o pkg/seaice: use different time constant for melting (SEAICE_gamma_t)
346      and freezing (SEAICE_gamma_t_frz) ice due to mixed layer temperature
347    o gad_som : fix flux output (& diagnostics) to have same units as other  
348      advection scheme fluxes (was previously multiplied by deltaT).  
349    o added verification/seaice_obcs both to test seaice open boundaries
350      and to provide an example matlab scrpt for generating them
351    o added verification/lab_sea/input.salt_plume for testing pkg/salt_plume
352    o pkg/salt_plume: clean up salt_plume_frac.F to
353      remove redundancy in PlumeMethod 1 and 4
354    o pkg/kpp: added saltplume diagnostics
355    o pkg/obcs and pkg/seaice:
356      - do not set uice and vice to zero when OB*icefile are unspecified
357      - OBCS_SEAICE_AVOID_CONVERGENCE is undefined by default
358      - moved seaice tracer obcs after call to seaice_growth
359    o pkg/salt_plume: added various options for salt plume depth
360      criterion and for vertical distribution of the salt
361    
362    checkpoint59l
363    o pkg/ptracers: new version of ptracers pickup:
364      read meta file and write only fields which are needed to restart.
365      ( same logic as main pickup file ; also using pickupStrictlyMatch )
366    o pkg/seaice:
367      - add timescale for melting due to warm mixed layer as a means of
368        setting SEAICE_availHeatFrac more conveniently
369      - add a CPP-flag/runtime parameter check for flooding algorithm
370      - reformulated availHeat in seaice_growth.F to be independent of AREA
371    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
372      unit changes
373    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
374    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
375      SX vector computer.
376    o pkg/seaice:
377      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
378        seaice forcing fields can now be read only through pkg/exf
379      - removed some unused halos
380    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
381    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
382      or U/VICE from U/VWIND before computing U/VSTRESS
383    
384    checkpoint59k
385    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
386      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
387    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
388      all experiments pass when compile with un-initialised var. checking option.
389    o added pkg/salt_plume
390    o script to test restart (for now, in MITgcm_contrib/jmc_script)
391    o pkg/seaice: new read/write pickup version.
392      read meta file and write only fields which are needed to restart.
393      ( same logic as main pickup file ; also using pickupStrictlyMatch )
394    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
395    o lab_sea.hb87: modify the domain & update output.hb87.txt :
396      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
397      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
398      process. Fixed here by closing the domain at the Northern boundary.
399    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
400    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
401      a set of consecutive levels in/from a 3-D array.
402    o pkg/ptracers:
403      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
404      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
405    
406    checkpoint59j
407    o in pkgs: dic, obcs, offline, rbcs:
408      standard way to compute coeff. for time interpolation between 2 time reccords
409      which retains full precision (& make results less dependent on compiler).
410      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
411    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
412      packages instead of reading ice cover and wind speed separately
413    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
414     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
415      to allow to compile customized code before the update)
416    o cleaning-up:
417      - fix CPP instruction syntax in pkg/obcs
418      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
419        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
420      - fix some threads issue in IO parts.
421    o pkg/dic:
422      - add tons of "_d 0" (--> much better testreports !)
423       and then update outputs of tutorial_global_oce_biogeo
424    o pkg/mom_fluxform:
425      add a special version of momentum advection intended to conserve momentum
426      next to a bathymetry step or a coastline edge. (default = off = #undef)
427    o new read/write pickup version:
428      - for now, only implemented for main (mdsio) pickup file.
429      - write out only what is needed to restart; merge pickup_nh , pickup_ph
430        and main pickup together.
431      - read meta file; read only what is needed to restart; stop if a field
432        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
433        if it make sense (even if the restart is not perfect).
434      - if no meta file, assume that pickup to read corresponds exactly to
435        a pickup that would currently be written.
436      - read pickup written in the old format (until checkpoint59i) if it
437        recognizes an old meta file (no field-list).
438      - add a meta file in exp. which starts from a pickup: 2 cases:
439        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
440         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
441        b) a meta file describing the content of the associated pickup file
442         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
443    o pkg/mdsio & pkg/rw:
444      - new routine to read a meta file ; new set of routine to read
445        Multiple-fields file (with meta file).
446    o added open boundary conditions capability for seaice
447        HSNOW, HSALT, UICE, and VICE
448    
449    checkpoint59i
450    o adjoint:
451      * fix multiDimAdvection adjoint
452        (partial recomputation problem by TAF for fVerT(:,:,kDown)
453        and comlev1 size definition (maxpass vs. max. number of tracers)
454      * verification/global_ocean.90x45x15 adjoint now tests
455        NLFS and multiDimAdvection using DST3 (=30)
456      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
457    o pkg/kpp: add "_d 0" to real constant (if missing);
458      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
459      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
460    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
461      for internal parameters related to restart process (formerly from PARAMS.h)
462      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
463    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
464      as argument. (only atm2d & obcs write_pickup have not yet been updated)
465    o pkg/monitor:
466      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
467      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
468      - account for deep Atmosphere factor and density factor (anelastic)
469    o added open boundary conditions capability for seaice HEFF and AREA
470    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
471      thermodynamics
472      - requires a little reorganization, which affects the testreport results
473        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
474        so that now the conservative form is tested
475      - add a few comments
476    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
477    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
478    o add new diagnostics to seaice: advective, diffusive fluxes (only for
479      multidim-advection, for scheme 2 they are not filled) and transports,
480      thermodynamic growth rates
481    o change units of EmPmR (inside the code, + within coupling interface)
482      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
483      Affects results @ truncation level (cg2d match) and update output of
484       experiments: lab_sea(6), global_ocean.90x40x15(10),
485      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
486      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
487      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
488      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
489    
490    checkpoint59h
491    o pkg/exf:
492      - improve vectorization by moving if-statement out of loops in
493        exf_mapfields, exf_radiation
494      - exf_bulkformulae.F: introduce 2D fields and vectorize code
495    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
496    o testreport:
497      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
498        monitor & update offline_exf_seaice exp. output.
499      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
500    o pkg/seaice:
501      - bug fix in the evp solver: boundary conditions were affected be
502        masking of zMax/zMin (changes results)
503      - minor bug fix in boundary conditions in seaice_calc_strainrates
504        (changes results for no_slip)
505      - seaice_lsr.F: make interpolation of eta dependent on boundaries
506      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
507      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
508        stress formulation and no-slip boundary conditions
509    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
510      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
511    o pkg/seaice: a first HSALT time stepping equation has been checked in
512    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
513      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
514      without requiring DO-IF statements
515    o pkg/thsice:
516      use continuous power-law function for partition of energy between lateral
517      melting/freezing and thinning/thickening ; old code using step function
518      still available with #undef THSICE_FRACEN_POWERLAW
519      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
520    o testreport: change AD testing : check against results/output_adm.txt
521      using same scripts as for forward test.
522    
523    checkpoint59g
524    o adjoint testing: in preparation for changing testreport:
525      - output format: cost and grad written on separated lines
526      - ad output results in directory "results" (instead of "results_ad")
527    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
528    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
529    o pkg/ecco: allow user defined cost function contributions
530    o testreport:
531      Allow to choose (per experiment) the list of tested output variables
532       and the main variable (used to issue a pass/FAIL ) ;
533      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
534      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
535      Also modify printing of summary:
536       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
537       b) echo the list of tested variables in the individual summary.txt of
538          each experiment.
539    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
540      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
541      (but still depend on the tile decompostion of the domain).
542    o pkg/seaice: change a discretization detail to make the B-grid code
543      "more symmetric". This change is likely to remove all "ridges/leads" that
544      where quasi-aligned with the grid in B-grid solutions. It may also be
545      the solution to the stress coupling issues with the B-grid.
546    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
547      remove .cvsignore from input dir. (since testreport no longer run here).
548    o pkg/thsice:
549     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
550     - fix reshaping of sea-ice just after advection:
551       melt all the ice only if ice-volume is too small.
552     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
553       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
554     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
555    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
556      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
557    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
558      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
559      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
560      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
561      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
562      -> update output.txt
563    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
564     this affects truncation error: -> update output.txt of exp:
565      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
566      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
567    
568    checkpoint59f
569    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
570    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
571      a bounded range (in forward mode)
572    o pkg/ecco, ctrl, autodiff and mom_common:
573     internal parameter controls, completements of implementations
574    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
575    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
576      (not seem any difference in testing results).
577    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
578       at face corners.
579    o pkg/generic_advdiff:
580     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
581      loop range indices for computing vertical advection tendency
582      and do the calculation in the interior only (no overlap) ;
583      for now, only implemented for SOM advection (to save CPU time).
584     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
585    o exch2 adjoint
586      First set of changes:
587      - add exch2 hand-written adjoint templates
588      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
589        This will require cleanup in pkg/autodiff/*.F
590        (changed routines currently kept separate in verif. code/)
591      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
592        that used to hide exch2 or cubed-sphere specific code
593        (commented via 'cph-exch2')
594    o pkg/seaice
595      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
596    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
597       output of global_ocean.cs32x15.thsice .
598    
599    checkpoint59e
600    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
601      for B-grid vector (not yet tested) and C-grid vector (<- only used
602      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
603    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
604      (#ifdef ALLOW_SALT_PLUME)
605    o gather_2d/scatter_2d: removed halo regions
606    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
607      scheme and the corresponding test case (under front_relax dir). For now,
608      only available with Skew-flux form and not yet tested in realistic set-up.
609      adjoint: store directives updated, but gradient checks deteriorated,
610      so maybe GM/Redi adjoint is now broken.
611    o seaice adjoint
612      * add AREA, HEFF, HSNOW as control variable
613        (should not change lab_sea results)
614      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
615    o pkg/seaice:
616      * added computation of saltFlux in seaice_growth;
617        For time being, sea ice salinity is assumed constant
618        contribution of snow flooding to freshening of sea ice is neglected.
619        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
620        defaults to 0.0 in order to maintain backward compatibility.
621        Typical values for SEAICE_salinity are 4 to 10 g/kg.
622      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
623      * added SEAICE_availHeatFrac, which specifies fraction of surface level
624        heat content used to melt or grow ice
625      * commented out cap of HICE: it helps keep ice thinner
626      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
627      * applied OBCS T/S mask to HEFFM sea ice mask
628    
629    checkpoint59d
630    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
631     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
632     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
633    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
634     and change default value of parameter "GM_Small_Number";
635     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
636       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
637       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
638    o pkg/ecco: cost function when applying pkg/smooth to controls
639    o pkg/ctrl: add forcingPrecond run time parameter
640    o pkg/seaice:
641     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
642     - fix bug in metric terms of u-equation in LSR solver (implicit part),
643       changes verification/lab_sea
644     - rearrange implicit part of u-equation in LSR solver to make it easier to
645       read, understand, and debug. This causes changes at the truncation level.
646     - fix (serious) bug in the boundary conditions (sign error in the implicit
647       part) of the LSR solver. Changes all LSR results.
648     - fixed problem with HSNOW initialization to avoid thick snow when AREA
649       is initilized with small values - does not change lab_sea results.
650     - added HsnowFile initialization capability
651    o pkg/smooth: addition to model/src and pkg/ctrl so allow
652     initialization of pkg/smooth and application to control vector
653    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
654    o dependencies: pkg/profiles requires pkg/cal
655    o pkg/profiles:
656     - added option ALLOW_PROFILES_GENERICGRID
657         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
658         that interpolation information (grid points and coefficients) is provided
659         within the netcdf input files.
660         -> sample matlab scripts can be found in MITgcm_contrib/gael
661         that allow you to prepare netcdf input files.
662     - also modified: cleaner include statements, cleaner error print statements,
663       cleaner stops when error, and more tests of the netcdf input files consistency.
664  o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.  o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
665  o pkg/seaice:  o pkg/seaice:
666   - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this   - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
# Line 137  o in FFIELDS.h: Line 794  o in FFIELDS.h:
794       ATMOSPHERIC_LOADING is #define).       ATMOSPHERIC_LOADING is #define).
795  o pkg/kpp: replaced _KPP_RL with _RL  o pkg/kpp: replaced _KPP_RL with _RL
796  o bug fixes for vertical diffusivity computations when both KPP and  o bug fixes for vertical diffusivity computations when both KPP and
797      3D diffusivity arrays are used.      3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
798        are no longer updating the vertical diffusivity array
799        (passed as argument) but are (re-) setting those arrays.
800  o pkg/seaice: fix bug in evp solver, while doing that  o pkg/seaice: fix bug in evp solver, while doing that
801    - change (improve?) discretization of stress computations for both    - change (improve?) discretization of stress computations for both
802      cgrid-lsr and evp solver      cgrid-lsr and evp solver

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